CN204437690U - A kind of reforming catalyst regeneration nitrogen specializes in device - Google Patents
A kind of reforming catalyst regeneration nitrogen specializes in device Download PDFInfo
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- CN204437690U CN204437690U CN201520084570.3U CN201520084570U CN204437690U CN 204437690 U CN204437690 U CN 204437690U CN 201520084570 U CN201520084570 U CN 201520084570U CN 204437690 U CN204437690 U CN 204437690U
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Abstract
The utility model provides a kind of reforming catalyst regeneration nitrogen and specializes in device.This device, is characterized in that, comprises liquid nitrogen storage and pressurization system, small flow supplies cut-off nitrogen pipe-line system and I&C system between nitrogen pipe-line system, large discharge continuously; Liquid nitrogen storage and supercharging equipment comprise a liquid nitrogen storage tank, pressurizing heat exchanger, a single u-shaped connecting tube and all kinds of valves etc., for ensureing the without interruption of small flow nitrogen, arrange two cover liquid nitrogen storage and supercharging equipment to form liquid nitrogen storage and pressurization system; Small flow comprises a nitrogen buffer tank and a set of pressure controlled valve group for nitrogen pipe-line system continuously; Between large discharge, cut-off nitrogen pipe-line system comprises a vaporizer and a set of pressure controlled valve group.This device can effectively reduce operating cost and simplify the operation.By controlling a set of liquid nitrogen storage and supercharging equipment is in supply status, another set of equipment is in filled state, switches to ensure the without interruption of nitrogen to two complete equipments.
Description
Technical field
The utility model relates to a kind of reforming catalyst regeneration nitrogen and specializes in device, belongs to the low temperature supplying nitrogen technical field in petrochemical industry.
Background technique
CONTINUOUS REFORMER is a kind of oil secondary operations technology, the raw material of processing is mainly low-octane straight-run naphtha, hydrotreated naphtha etc., utilize platinum-rhenium (Pt-Re) bimetallic catalyst that molecule is reset, isomery, increase the output of aromatic hydrocarbons, improve the technology of octane number, simultaneously a large amount of precious hydrogen of by-product.CONTINUOUS REFORMER technology is the technology of China's Petrochemical Enterprises prioritizing selection because this technology have consumption less, the technical advantage such as conversion ratio is high, can maximize.But technique bag proposes 4 requirements to regeneration nitrogen: 1. purity is greater than 99.99%; 2. without interruption; 3. pressure is greater than 0.85MPa (G), and empty substation battery limit (BL) pressure is 0.95MPa (G); 4. larger than continuous flow more than 10 times of flow rate discontinuities.The empty substation in conventional refinery cannot meet above requirement, and must increase relevant device newly is its independent the supply of nitrogen.Supply Method at present for reforming plant catalyst regeneration nitrogen has: 1. with compressor, nitrogen pressure is reduced to 0.95MPa (G) and sends battery limit (BL) as supplying nitrogen continuously; 2. with cryopump, liquid nitrogen is pressurized to 1.0MPa (G) and after gasification, sends battery limit (BL) again as supplying nitrogen continuously; Between large discharge, the choosing of cut-off nitrogen utilizes medium pressure nitrogen pressure drop in refinery to obtain.First method stable operation in these two kinds of methods, but power consumption is high; Second method Cryo Equipment reliability is inadequate, and operating flexibility is poor.Wherein method 2 is compared and method 1, and have the advantages such as power consumption is little, equipment investment is lower slightly, nitrogen gas purity is stable, inferior position is Cryo Equipment normal-temperature operation, and equipment operating reliability has much room for improvement, and the regulating power of flow is poor simultaneously.
Model utility content
For prior art problem, the purpose of this utility model is to provide a kind of reforming catalyst regeneration nitrogen to specialize in device.This device can effectively reduce operating cost and simplify the operation.
For achieving the above object, the utility model provides a kind of reforming catalyst regeneration nitrogen and specializes in device, and this device comprises liquid nitrogen storage and pressurization system, small flow supplies cut-off nitrogen pipe-line system and I&C system between nitrogen pipe-line system, large discharge continuously;
Wherein, liquid nitrogen storage and pressurization system comprise two cover liquid nitrogen storage and supercharging equipments, and often cover liquid nitrogen storage and supercharging equipment include a liquid nitrogen storage tank, pressurizing heat exchanger, a single u-shaped connecting tube and a several valve;
Small flow comprises for nitrogen pipe-line system continuously: a nitrogen buffer tank and a set of pressure controlled valve group;
Between large discharge, cut-off nitrogen pipe-line system comprises: a vaporizer and a set of pressure controlled valve group;
Liquid nitrogen entrance bottom two liquid nitrogen storage tanks is all connected to Deep Freezing Nitrogen Making Machine by pipeline;
Two liquid nitrogen storage tank tops are equipped with storage tank blowdown line, and on this pipeline, be provided with storage tank pressure release open-and-shut valve;
The first outlet bottom two liquid nitrogen storage tanks is connected respectively by U-shaped connecting tube and corresponding pressurizing heat exchanger, and this U-shaped connecting tube is provided with liquid nitrogen sends open-and-shut valve; The top exit of two pressurizing heat exchangers is all divided into two-way, wherein a road is all connected to nitrogen buffer tank, another road is connected to the storage tank blowdown line at corresponding liquid nitrogen storage tank top, this road pipeline (namely connecting the pipeline of storage tank blowdown line and pressurizing heat exchanger outlet line) is respectively equipped with pressure maintaining valve to control liquid nitrogen storage tank top maintain pressure (when liquid nitrogen storage tank because of liquid level reduce operation pressure decline time, in pressurizing heat exchanger, gas returns liquid nitrogen tank top by pressure maintaining valve, to play the effect of ftercompction); The outlet of nitrogen buffer tank is communicated with by pipeline reforms regeneration special nitrogen pipe network (sending battery limit (BL)) and on the outlet line of nitrogen buffer tank, is provided with a set of pressure controlled valve group;
The second outlet bottom two liquid nitrogen storage tanks is all connected to the entrance of vaporizer by pipeline, the second outlet line bottom two liquid nitrogen storage tanks is respectively equipped with cut-off valve, and the outlet of vaporizer is communicated with by pipeline reforms regeneration special nitrogen pipe network and on the outlet line of vaporizer, is provided with a set of pressure controlled valve group;
Two liquid nitrogen storage tanks are connected to liquid level teletransmission control apparatus, and liquid level teletransmission control apparatus, storage tank pressure release open-and-shut valve and liquid nitrogen are sent open-and-shut valve and be connected to I&C system.
Specialize in device at above-mentioned reforming catalyst regeneration nitrogen, preferably, described pressurizing heat exchanger is the low temperature resistant aluminum alloy multiple wing air-heating type gasifier of vertically arranged vertical tube structure or spiral structure.Pressurizing heat exchanger can change heat transfer rate by the liquid nitrogen liquid level changing its inside, thus regulates the gasification rate of liquid nitrogen.
Specialize in device at above-mentioned reforming catalyst regeneration nitrogen, preferably, described U-shaped connecting tube is heat-insulation vacuum pipe.Liquid nitrogen can two-way flow within described U-shaped connecting tube, enters the passage of pressurizing heat exchanger during normal work as liquid nitrogen, suppresses the passage returning liquid nitrogen storage tank during liquid nitrogen gasification equally as liquid nitrogen.
Specialize in device at above-mentioned reforming catalyst regeneration nitrogen, preferably, described I&C system be nearby by full factory or the DCS control system of empty point of pneumatics, or be the PLC control system of independent setting.
Specialize in device at above-mentioned reforming catalyst regeneration nitrogen, preferably, described storage tank blowdown line is connected to low-pressure nitrogen pipe network, avoids causing nitrogen emptying to waste.
Specialize in device at above-mentioned reforming catalyst regeneration nitrogen, this device also comprises other valves, as the one-way valve arranged on liquid nitrogen storage tank suction line, the one-way valve etc. arranged on pressurizing heat exchanger suction line and on nitrogen buffer tank entrance and exit pipeline, the cut-off valve that the second outlet line bottom two liquid nitrogen storage tanks is arranged respectively, those skilled in the art can arrange valve needed for other by related domain routine techniques means in said apparatus.Storage tank pressure release open-and-shut valve in said apparatus and liquid nitrogen are sent open-and-shut valve and are named for differentiation, and in fact the two be the open-and-shut valve of related domain routine.
Adopt reforming catalyst regeneration nitrogen of the present utility model to specialize in the method that device carries out nitrogen supply (NS), comprise the following steps:
When adopting small flow to supply nitrogen continuously, a set of liquid nitrogen storage in liquid nitrogen storage and pressurization system and supercharging equipment are in supply status, are another set ofly in filled state, fill liquid nitrogen by Deep Freezing Nitrogen Making Machine to the liquid nitrogen storage tank being in filled state; Once the liquid nitrogen storage tank liquid level being in supply status is lower than setting value, the storage tank pressure release open-and-shut valve that the liquid nitrogen storage tank of filled state just connects by I&C system is closed (such as can be provided with sensor in liquid nitrogen storage tank, signal is defeated by liquid level teletransmission control apparatus by this sensor, and then be defeated by I&C system), and its liquid nitrogen is sent open-and-shut valve open, this liquid nitrogen storage and supercharging equipment by the pressure of the automatic pressurising of pressure maintaining valve to setting, and start the supply of nitrogen; Then former that cover liquid nitrogen storage for nitrogen state and supercharging equipment are switched to filled state, open by its storage tank pressure release open-and-shut valve and send open-and-shut valve closedown with liquid nitrogen; The liquid nitrogen be in the liquid nitrogen storage tank of supply status enters in pressurizing heat exchanger, and gasified by pressurizing heat exchanger, gasification nitrogen mainly enters nitrogen buffer tank, regulate through pressure controlled valve group and enter regeneration special nitrogen pipe network of reforming, a small amount of nitrogen enters liquid nitrogen storage tank through pressure maintaining valve and maintains its top operational pressure stability; Switch to realize the without interruption of nitrogen to two cover liquid nitrogen storage and supercharging equipment; I&C system realize supply the Stress control of nitrogen and the switching of liquid nitrogen storage and supercharging equipment;
When adopting cut-off nitrogen between large discharge, liquid nitrogen in (one or two) liquid nitrogen storage tank enters vaporizer through pipeline and cut-off valve, liquid nitrogen gasifies in vaporizer, then entering through the adjustment of pressure controlled valve group regeneration special nitrogen pipe network of reforming, and realizes the supply that large discharge is interrupted nitrogen.
Adopt reforming catalyst regeneration nitrogen of the present utility model specialize in device carry out confession nitrogen time, liquid nitrogen is delivered to liquid nitrogen storage and pressurization system by the Deep Freezing Nitrogen Making Machine of routine, and this system can realize the storage of liquid nitrogen, gasification, function of increasing pressure simultaneously; Liquid nitrogen storage tank is filled into by liquid nitrogen, when adopting small flow to supply nitrogen continuously, liquid nitrogen sends open-and-shut valve through liquid nitrogen and U-shaped connecting tube enters in pressurizing heat exchanger, and gasified by pressurizing heat exchanger absorbing environmental atmospheric heat, gasification nitrogen mainly send into small flow continuously for nitrogen pipe-line system for reformer provides small flow continuous nitrogen, a small amount of nitrogen enters liquid nitrogen storage tank through pressure maintaining valve and maintains its top operational pressure stability; When adopting cut-off nitrogen between large discharge, liquid nitrogen enters vaporizer through cut-off valve, and liquid nitrogen gasify intensifications in vaporizer, then regulates through pressure controlled valve group that entering reforms regenerates special nitrogen pipe network, thus realizes the supply of large discharge interruption nitrogen.Liquid nitrogen storage and pressurization system comprise two cover liquid nitrogen storage and supercharging equipments, and wherein a set of equipment is in supply status, and another set of equipment is in filled state, can ensure the without interruption of small flow nitrogen.
The utility model is that reformer catalyst regeneration nitrogen provides a kind of feeding mechanism, this device can meet the requirements of technique bag to regeneration nitrogen, and the power consumption of this device is little, investment is not high, nitrogen gas purity is high, operational reliability is stable, and effectively reduces operating cost and simplify operation.
Accompanying drawing explanation
Fig. 1 is the structural representation that the reforming catalyst regeneration nitrogen of embodiment specializes in device.
Primary clustering symbol description:
1-liquid nitrogen storage tank, 2-U type connecting tube, 3-pressurizing heat exchanger, 4-nitrogen buffer tank, 5-first pressure controlled valve group, 6-nitrogen recycling open-and-shut valve, 7-liquid nitrogen sends open-and-shut valve, 8-pressure maintaining valve, 9-liquid level teletransmission control apparatus, 10-I&C system, 11-vaporizer, 12-second pressure controlled valve group, 13-cut-off valve.
Embodiment
In order to there be understanding clearly to technical characteristics of the present utility model, object and beneficial effect, existing following detailed description is carried out to the technical solution of the utility model, but can not be interpreted as can the restriction of practical range to the utility model.
The technical solution of the utility model is described in detail below with a specific embodiment.
Present embodiments provide a kind of reforming catalyst regeneration nitrogen and specialize in device, as shown in Figure 1, this device comprises liquid nitrogen storage and pressurization system, small flow supplies cut-off nitrogen pipe-line system and I&C system between nitrogen pipe-line system, large discharge continuously, equipment in Fig. 1 outside double dot dash line is conventional deep-cooling nitrogen-making and air separation plant, and the position in double dot dash line is the device of the present embodiment;
Wherein, liquid nitrogen storage and pressurization system comprise two cover liquid nitrogen storage and supercharging equipments, and often cover liquid nitrogen storage and supercharging equipment comprise 1, pressurizing heat exchanger 3, single u-shaped connecting tube 2 an of liquid nitrogen storage tank and several valve comprising pressure maintaining valve 8 and open-and-shut valve; Described pressurizing heat exchanger 3 is the low temperature resistant aluminum alloy multiple wing air-heating type gasifier of vertically arranged vertical tube structure or spiral structure, pressurizing heat exchanger 3 can change heat transfer rate by the liquid nitrogen liquid level changing its inside, thus regulates the gasification rate of liquid nitrogen; Described U-shaped connecting tube 2 is heat-insulation vacuum pipe, and liquid nitrogen can two-way flow within described U-shaped connecting tube 2, enters the passage of pressurizing heat exchanger 3 during normal work as liquid nitrogen, suppresses the passage returning liquid nitrogen storage tank 1 during liquid nitrogen gasification equally as liquid nitrogen;
Small flow comprises for nitrogen pipe-line system continuously: a nitrogen buffer tank 4 and a set of first pressure controlled valve group 5;
Between large discharge, cut-off nitrogen pipe-line system comprises: vaporizer 11, a set of second pressure controlled valve group 12 and some cut-off valves 13;
I&C system be nearby by full factory or the DCS control system of empty point of pneumatics, or be the PLC control system of independent setting;
Liquid nitrogen entrance bottom two liquid nitrogen storage tanks 1 is all connected to deep-cooling nitrogen-making device by pipeline;
The first outlet bottom two liquid nitrogen storage tanks 1 is respectively by the entrance being connected to two pressurizing heat exchangers 3 two single u-shaped connecting tube 2, the first outlet line bottom two liquid nitrogen storage tanks 1 is respectively equipped with liquid nitrogen and sends open-and-shut valve 7, the storage tank blowdown line at two liquid nitrogen storage tank 1 tops is respectively equipped with storage tank pressure release open-and-shut valve 6, the outlet line of two pressurizing heat exchangers 3 is connected to same pipeline by threeway and this pipeline is connected to the entrance of nitrogen buffer tank 4, the outlet line of two pressurizing heat exchangers 3 is respectively equipped with the storage tank blowdown line that a pipeline is connected to two liquid nitrogen storage tank 1 tops, and on two pipelines connecting liquid nitrogen storage tank 1 top storage tank blowdown line and pressurizing heat exchanger 3 outlet line, be respectively equipped with pressure maintaining valve 8, play the effect of ftercompction, the outlet of nitrogen buffer tank 4 is communicated with by pipeline reforms regeneration special nitrogen pipe network and on the outlet line of nitrogen buffer tank, is provided with the first pressure controlled valve group 5,
The second outlet bottom two liquid nitrogen storage tanks 1 is connected to same pipeline respectively by pipeline and threeway and this pipeline is connected to the entrance of vaporizer 11, the second outlet line bottom two liquid nitrogen storage tanks 1 is respectively equipped with cut-off valve 13, and the outlet of vaporizer 11 is communicated with by pipeline reforms regeneration special nitrogen pipe network and on the outlet line of vaporizer, is provided with the second pressure controlled valve group 12;
Two liquid nitrogen storage tanks 1 are connected to liquid level teletransmission control apparatus 9, and liquid level teletransmission control apparatus 9, storage tank pressure release open-and-shut valve 6 are sent open-and-shut valve 7 with liquid nitrogen and be connected to I&C system 10.
The present embodiment also provides a kind of reforming catalyst regeneration nitrogen to specialize in method, and it is adopt above-mentioned reforming catalyst regeneration nitrogen to specialize in the method that device carries out nitrogen supply (NS), and the method comprises the following steps:
When adopting small flow to supply nitrogen continuously, a set of liquid nitrogen storage in liquid nitrogen storage and pressurization system and supercharging equipment are in supply status, and another set of liquid nitrogen storage and supercharging equipment are in filled state, liquid nitrogen is filled to the liquid nitrogen storage tank 1 being in filled state by Deep Freezing Nitrogen Making Machine, once liquid nitrogen storage tank 1 liquid level being in supply status is lower than setting value, the storage tank pressure release open-and-shut valve 6 that the liquid nitrogen storage tank 1 of filled state connects just is closed and (is provided with liquid level sensor in liquid nitrogen storage tank 1 by I&C system, signal is defeated by liquid level teletransmission control apparatus 9 by this sensor, and then be defeated by I&C system 10), and its liquid nitrogen is sent open-and-shut valve 7 open, this liquid nitrogen storage and supercharging equipment are by the pressure of the automatic pressurising of pressure maintaining valve 8 to setting, and start the supply of nitrogen, then former that cover liquid nitrogen storage for nitrogen state and supercharging equipment are switched to filled state, open by its storage tank pressure release on off switch 6 valve and send open-and-shut valve 7 with liquid nitrogen and close, the liquid nitrogen be in the liquid nitrogen storage tank 1 of supply status enters in pressurizing heat exchanger 3 by U-shaped connecting tube 2, and gasified by pressurizing heat exchanger 3, gasification nitrogen mainly enters nitrogen buffer tank 4, regulate through the first pressure controlled valve group 5 and enter regeneration special nitrogen pipe network of reforming, a small amount of nitrogen enters liquid nitrogen storage tank 1 through pressure maintaining valve 8 and maintains its top operational pressure stability, two cover liquid nitrogen storage and supercharging equipment are switched thus realize the without interruption of small flow nitrogen, I&C system 10 realize supply the Stress control of nitrogen and the switching of liquid nitrogen storage and supercharging equipment,
When adopting cut-off nitrogen between large discharge, liquid nitrogen in one or two in two liquid nitrogen storage tanks 1 enters vaporizer 11 through pipeline and cut-off valve 13, liquid nitrogen gasifies in vaporizer 11, regulate through the second pressure controlled valve group 12 again and enter regeneration special nitrogen pipe network of reforming, realize the supply that large discharge is interrupted nitrogen.
Adopt the reforming catalyst regeneration nitrogen of the present embodiment to specialize in device and confession nitrogen is carried out to the reforming plant catalyst regeneration that certain refinery is newly-built.The newly-built 1,000,000 tons/year of reformers in this refinery, catalyst regeneration nitrogen demand is: normal continuous flow 70Nm
3/ h; Flow rate discontinuities 970Nm
3/ h (one-time continuous 2 days/month), enters battery limit (BL) pressure > 0.85MPa (G).For this requirement, the technological scheme of the present embodiment selects 2 design pressures to be decided to be the liquid nitrogen storage tank of 1.2MPa (G) (or using liquid nitrogen storage tank in sky substation), actual volume 100M
3; 2 Φ 100mm × 10000mm aluminum fin-stock pressurizing heat exchanger (air-heating type gasifier); A 5m
3nitrogen buffer tank, a 1500Nm
3/ h air-heating type gasifier, design pressure is 1.2MPa (G).Liquid nitrogen is boiling point about-169 DEG C under 0.95MPa (G), and gasification latent heat is about 191kJ/Nm
3, gasification Endothermic power is about 3.7kW, and the low temperature nitrogen after gasification will absorb heat further intensification in pipeline, and its temperature is until close with ambient temperature.
The liquid nitrogen storage tank 1 filled separates with deep-cooling nitrogen-making device by liquid nitrogen storage tank 1 inlet one-way valve, for the supply of the continuous nitrogen of small flow, liquid nitrogen is sent open-and-shut valve 7 through liquid nitrogen and is flow automatically U-shaped connecting tube 2 and enters pressurizing heat exchanger 3, with the heat absorption rate of ~ 8kW, liquid nitrogen gasification is heated up, along with the control of liquid nitrogen gasification volumetric expansion and the first pressure controlled valve group 5, the operation of pressurizing heat exchanger 3 will maintain about 1.0MPa (G), liquid nitrogen storage tank 1 top operational pressure controls at 0.95MPa (G) by pressure maintaining valve 8, along with sending outside of nitrogen, liquid nitrogen also can flow automatically to enter pressurizing heat exchanger 3 and gasify to supplement further and send nitrogen outside, when in liquid nitrogen storage tank 1, liquid level is lower than setting value, then switch liquid nitrogen storage tank 1 by I&C system 10, thus realize 70Nm
3/ h nitrogen without interruption.
Large discharge is interrupted to the supply of nitrogen, opens cut-off valve 13, liquid nitrogen is admitted to vaporizer 11 also endothermic gasification, intensification, and gasification nitrogen sends battery limit (BL) after pressure controlled valve group 12 carries out Flow-rate adjustment.
Select 100M
3liquid nitrogen storage tank, normal small flow can realize 30 days without interruption for nitrogen continuously, and between large discharge, cut-off nitrogen can realize more than 2 days without interruption, namely monthly switches once.If use liquid nitrogen storage tank in sky substation, then obviously can reduce equipment investment.
Claims (5)
1. reforming catalyst regeneration nitrogen specializes in a device, it is characterized in that, this device comprises liquid nitrogen storage and pressurization system, small flow supplies cut-off nitrogen pipe-line system and I&C system between nitrogen pipe-line system, large discharge continuously;
Wherein, liquid nitrogen storage and pressurization system comprise two cover liquid nitrogen storage and supercharging equipments, and often cover liquid nitrogen storage and supercharging equipment include a liquid nitrogen storage tank, pressurizing heat exchanger, a single u-shaped connecting tube and a several valve;
Small flow comprises for nitrogen pipe-line system continuously: a nitrogen buffer tank and a set of pressure controlled valve group;
Between large discharge, cut-off nitrogen pipe-line system comprises: a vaporizer and a set of pressure controlled valve group;
Liquid nitrogen entrance bottom two liquid nitrogen storage tanks is all connected to Deep Freezing Nitrogen Making Machine by pipeline;
Two liquid nitrogen storage tank tops are equipped with storage tank blowdown line, and on this pipeline, be provided with storage tank pressure release open-and-shut valve;
The first outlet bottom two liquid nitrogen storage tanks is connected respectively by U-shaped connecting tube and corresponding pressurizing heat exchanger, and this U-shaped connecting tube is provided with liquid nitrogen sends open-and-shut valve; The top exit of two pressurizing heat exchangers is all divided into two-way, wherein a road is all connected to nitrogen buffer tank, another road is connected to the storage tank blowdown line at corresponding liquid nitrogen storage tank top, this road pipeline is respectively equipped with pressure maintaining valve and maintains pressure to control liquid nitrogen storage tank top; The outlet of nitrogen buffer tank is communicated with by pipeline reforms regeneration special nitrogen pipe network and on the outlet line of nitrogen buffer tank, is provided with a set of pressure controlled valve group;
The second outlet bottom two liquid nitrogen storage tanks is all connected to the entrance of vaporizer by pipeline, the second outlet line bottom two liquid nitrogen storage tanks is respectively equipped with cut-off valve, and the outlet of vaporizer is communicated with by pipeline reforms regeneration special nitrogen pipe network and on the outlet line of vaporizer, is provided with a set of pressure controlled valve group;
Two liquid nitrogen storage tanks are connected to liquid level teletransmission control apparatus, and liquid level teletransmission control apparatus, storage tank pressure release open-and-shut valve and liquid nitrogen are sent open-and-shut valve and be connected to I&C system.
2. reforming catalyst regeneration nitrogen according to claim 1 specializes in device, it is characterized in that, described pressurizing heat exchanger is the low temperature resistant aluminum alloy multiple wing air-heating type gasifier of vertically arranged vertical tube structure or spiral structure.
3. reforming catalyst regeneration nitrogen according to claim 1 specializes in device, it is characterized in that, described U-shaped connecting tube is heat-insulation vacuum pipe.
4. reforming catalyst regeneration nitrogen according to claim 1 specializes in device, it is characterized in that, described I&C system be nearby by full factory or the DCS control system of empty point of pneumatics, or be the PLC control system of independent setting.
5. reforming catalyst regeneration nitrogen according to claim 1 specializes in device, it is characterized in that, described storage tank blowdown line is connected to low-pressure nitrogen pipe network.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520084570.3U CN204437690U (en) | 2015-02-06 | 2015-02-06 | A kind of reforming catalyst regeneration nitrogen specializes in device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520084570.3U CN204437690U (en) | 2015-02-06 | 2015-02-06 | A kind of reforming catalyst regeneration nitrogen specializes in device |
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| Publication Number | Publication Date |
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|---|---|---|---|
| CN201520084570.3U Withdrawn - After Issue CN204437690U (en) | 2015-02-06 | 2015-02-06 | A kind of reforming catalyst regeneration nitrogen specializes in device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613311A (en) * | 2015-02-06 | 2015-05-13 | 北京石油化工工程有限公司 | Special nitrogen gas supplying device and special nitrogen gas supplying method for reforming catalyst regeneration |
| CN110630899A (en) * | 2019-10-11 | 2019-12-31 | 中国科学院理化技术研究所 | Low-temperature gas supply system |
| CN112050073A (en) * | 2020-07-29 | 2020-12-08 | 邯郸钢铁集团有限责任公司 | Liquid storage tank pressurizing and depressurizing method |
-
2015
- 2015-02-06 CN CN201520084570.3U patent/CN204437690U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613311A (en) * | 2015-02-06 | 2015-05-13 | 北京石油化工工程有限公司 | Special nitrogen gas supplying device and special nitrogen gas supplying method for reforming catalyst regeneration |
| CN110630899A (en) * | 2019-10-11 | 2019-12-31 | 中国科学院理化技术研究所 | Low-temperature gas supply system |
| CN112050073A (en) * | 2020-07-29 | 2020-12-08 | 邯郸钢铁集团有限责任公司 | Liquid storage tank pressurizing and depressurizing method |
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