CN115300970B - Zero-discharge treatment device for wastewater of asphalt mixing plant - Google Patents
Zero-discharge treatment device for wastewater of asphalt mixing plant Download PDFInfo
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- CN115300970B CN115300970B CN202210876786.8A CN202210876786A CN115300970B CN 115300970 B CN115300970 B CN 115300970B CN 202210876786 A CN202210876786 A CN 202210876786A CN 115300970 B CN115300970 B CN 115300970B
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- water
- spray tower
- communicated
- dust collector
- asphalt
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- 239000010426 asphalt Substances 0.000 title claims abstract description 38
- 239000002351 wastewater Substances 0.000 title claims abstract description 37
- 238000002156 mixing Methods 0.000 title claims abstract description 16
- 208000028659 discharge Diseases 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 239000000843 powder Substances 0.000 claims abstract description 67
- 239000000428 dust Substances 0.000 claims abstract description 65
- 239000007921 spray Substances 0.000 claims abstract description 56
- 239000002699 waste material Substances 0.000 claims abstract description 32
- 238000001035 drying Methods 0.000 claims abstract description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003546 flue gas Substances 0.000 claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 19
- 238000011084 recovery Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims description 11
- 239000010865 sewage Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Road Paving Machines (AREA)
Abstract
The invention relates to a wastewater zero-discharge treatment device of an asphalt mixing plant, which comprises a drying cylinder, a filter bag dust collector, a water dust collector, a powder tank, a waste powder processor, a water storage tank assembly, a spray tower and asphalt flue gas treatment equipment, wherein the drying cylinder is arranged on the drying cylinder; the invention designs the water storage tank assembly, water can be filtered, the water outlet of the water storage tank assembly is respectively communicated with the waste powder processor, the water dust removal and the water inlet of the spray tower through corresponding pipelines, the water outlet of the water dust removal and spray tower is communicated with the water inlet of the water storage tank assembly, the waste powder processor, the water dust removal and the water supply of the spray tower can be realized, meanwhile, the water dust removal and the water discharge recovery treatment of the spray tower are realized, the waste water of the asphalt mixing plant is effectively treated, the zero emission of the waste water is realized, and the water conservation and the high-efficiency utilization of water resources are realized.
Description
Technical Field
The invention relates to a wastewater zero-discharge treatment device for an asphalt mixing plant.
Background
In order to realize ultra-low emission of particulate matters and effectively treat dust and asphalt flue gas of an asphalt mixing plant, a water dust remover and a spray tower are gradually applied. The filter bag dust collector is connected with the water dust collector in series, so that dust in the flue gas can be effectively treated, and ultra-low emission of particulate matters is realized; the spray tower is used as a pretreatment procedure of asphalt flue gas treatment equipment, so that the flue gas is cooled, dust and partial water-soluble organic matters are removed, the specific resistance of the flue gas is increased, and conditions are created for subsequent asphalt flue gas treatment; the application of the water dust remover and the spray tower has the advantages that the asphalt mixing plant critique the new problem of wastewater treatment, and how to effectively treat the wastewater generated by the asphalt mixing plant and discharge the wastewater after reaching the standards is needed to be solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing the wastewater zero-discharge treatment device for the asphalt mixing plant, which can effectively treat wastewater of the asphalt mixing plant, realize zero discharge of wastewater and realize water conservation and high-efficiency utilization of water resources.
The technical scheme adopted by the invention is as follows:
A zero-emission treatment device for wastewater of an asphalt mixing plant comprises a drying cylinder, a filter bag dust collector, a water dust collector, a powder tank, a waste powder processor, a water storage tank assembly, a spray tower and asphalt flue gas treatment equipment;
The drying cylinder and the filter bag dust collector are sequentially connected with water for dust removal, the powder tank is communicated with the bottom of the filter bag dust collector through a fine powder recovery pipe, the bottom of the powder tank is communicated with the waste powder processor through a powder conveying screw, the water outlet of the water storage tank assembly is respectively communicated with the waste powder processor, the water for dust removal and the water inlet of the spray tower through corresponding pipelines, and the water outlet of the water for dust removal and the spray tower is communicated with the water inlet of the water storage tank assembly.
Further, the water storage tank assembly comprises a tank body and a filter cylinder suspended in the tank body, a filtering return pipe is communicated with the side wall of the top of the filter cylinder, the filtering return pipe is respectively communicated with a spray tower and a water inlet for water dust removal, the filter cylinder is coaxially arranged with the tank body, a waste powder processor water supply pipe is communicated with the upper part of the side wall of the tank body, and the other end of the waste powder processor water supply pipe is communicated with the water inlet of the waste powder processor.
Further, a bottom ring pipe is arranged at the bottom of the tank body, a plurality of side wall ring pipes are arranged in the side wall of the tank body, spray heads are arranged on the bottom ring pipe and the side wall ring pipes, the bottom ring pipe, the side wall ring pipes and the sewage pipes are communicated, and the other ends of the sewage pipes are respectively communicated with water outlets of the water dedusting and spraying towers.
Further, the spray heads on the bottom collar are arranged vertically upwards.
Further, the spray heads on each sidewall collar are positioned in the same horizontal plane, are inclined in the same direction along the circumference, and the inclined angle is tangential to the outer sidewall of the filter cartridge.
Further, the inclination angles of the spray heads on the adjacent two side wall ring pipes are opposite.
Further, a chimney assembly is connected to one side of the water dedusting and asphalt flue gas treatment equipment.
Further, a water bucket is arranged on one side of the spray tower, the water dust removing device and the waste powder processor, the filtering return pipe is communicated with the water bucket, and a clean water tap is arranged on the upper portion of the water bucket.
Further, the filter bag dust collector is arranged above the drying cylinder, the air inlet at the left end of the filter bag dust collector is connected with the drying cylinder in series through an air duct, and the air outlet at the right end of the filter bag dust collector is connected with water for dust collection through the air duct in series.
Furthermore, the pipelines at the water outlets of the water dedusting and spraying towers are provided with drain valves.
The invention has the positive effects that: the invention designs the water storage tank assembly, water can be filtered, the water outlet of the water storage tank assembly is respectively communicated with the waste powder processor, the water dust removal and the water inlet of the spray tower through corresponding pipelines, the water outlet of the water dust removal and spray tower is communicated with the water inlet of the water storage tank assembly, the waste powder processor, the water dust removal and the water supply of the spray tower can be realized, meanwhile, the water dust removal and the water discharge recovery treatment of the spray tower are realized, the waste water of the asphalt mixing plant is effectively treated, the zero emission of the waste water is realized, and the water conservation and the high-efficiency utilization of water resources are realized.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a tank of the present invention;
FIG. 3 is a schematic top view of the tank of the present invention;
FIG. 4 is a schematic view of a water bucket according to the present invention.
In the drawings of which there are shown,
1-A drying cylinder; 2-a filter bag dust collector; 3-piping; 4-water dedusting; a 5-chimney assembly; 6-a blow-down valve; 7-asphalt flue gas treatment equipment; 8-a water bucket; 9-a spray tower; 10-a blow-down pipe; 11-filtering a return pipe; 12-a sewage pump; 13-a bracket; 14-a water storage tank assembly; 141-a filter cartridge; 142-a tank; 143-sidewall collar; 144-bottom collar; 145-spray head; 15-a waste powder processor water supply pipe; 16-a waste powder processor; 17-powder conveying spiral; 18-a powder tank; 19-a fine powder recovery tube; 20-clean water tap.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
As shown in figures 1-4, the invention mainly comprises a drying cylinder 1, a filter bag dust collector 2, a water dust collector 4, a powder tank 18, a waste powder processor 16, a water storage tank assembly 14, a spray tower 9, asphalt flue gas treatment equipment 7 and the like; the filter bag dust collector 2 is arranged above the drying cylinder 1 and is communicated with the drying cylinder 1 through an air duct, the flame and high-temperature gas of the burner heat stones with various particle sizes in the rotating drying cylinder 1, and high-temperature smoke generated by combustion in the drying cylinder 1 and dust in stones raised by the rotation of the drying cylinder 1 are sucked and filtered by the filter bag dust collector 2; the recovered powder filtered by the filter bag dust collector 2 is deposited at the bottom of the filter bag dust collector 2 and stored in a powder tank 18 through a fine powder recovery pipe 19; the recovered powder stored in the powder tank 18, wherein one part of the recovered powder is mixed with new powder according to a certain proportion and is produced and used, and the other part of the recovered powder is directly discharged; the directly discharged recovered powder needs to enter the waste powder processor 16 through the powder conveying screw 17, and the recovered powder and water are fully mixed into slurry in the waste powder processor 16 to be directly discharged, so that the treated recovered powder does not generate dust.
The filter bag dust collector 2 is connected in series with the water dust collector 4 through the pipeline 3 to further purify the flue gas, and particles are adsorbed by water in the water dust collector 4, so that ultra-low emission of the particles is realized, and the purified flue gas is finally discharged into the atmosphere through the chimney assembly 5; a large amount of asphalt can be used in asphalt station production to produce a large amount of asphalt flue gas simultaneously, and the collected asphalt flue gas is pretreated by a spray tower 9 to realize flue gas cooling, and simultaneously, particulate matters and organic matters partially dissolved in water are filtered, and the pretreated asphalt flue gas is treated by high-efficiency asphalt flue gas treatment equipment 7 and finally reaches the discharge standard by a chimney assembly 5.
The water dedusting 4 and the spray tower 9 need irregular water replenishment in use, a large amount of waste water is generated, and the generated waste water needs to be replaced periodically, so that the water dedusting 4 and the spray tower 9 are both provided with a water bucket 8 and a blow-off valve 6, the upper part of the water bucket 8 is provided with a clean water faucet 20 and a filtering return pipe 11, and the clean water faucet 20 and the filtering return pipe 11 are used for replenishing water for the water dedusting 4 and the spray tower 9.
The waste water generated in the water dedusting 4 and the spray tower 9 is connected with a water storage tank assembly 14 through a drain valve 6, a sewage pump 12 and a drain pipe 10.
The water storage tank assembly 14 comprises a tank body 142 and a filter cartridge 141 suspended in the tank body 142, wherein a filter return pipe 11 is communicated with the top side wall of the filter cartridge 141, and the filter return pipe 11 is respectively communicated with the spray tower 9 and the water inlet of the water dust collector 4. The filter cartridge 141 is coaxially arranged with the tank body, a waste powder processor water supply pipe 15 is communicated with the upper part of the side wall of the tank body, and the other end of the waste powder processor water supply pipe 15 is communicated with the water inlet of the waste powder processor 16.
The bottom of the tank body is provided with a bottom ring pipe 144, three side wall ring pipes 143 are arranged in the side wall of the tank body, spray heads 145 are arranged on the bottom ring pipe 144 and the side wall ring pipes 143, and the bottom ring pipe 144, the side wall ring pipes 143 are communicated with the sewage pipe 10.
The bottom annular pipe 144 and the side wall annular pipe 143 of the tank body are communicated, the spray nozzle 145 on the bottom annular pipe 144 vertically upwards moves, and sprayed water flow upwards moves from below, so that powder in the tank body can be prevented from being deposited; the spray heads 145 on the same side wall ring pipe 143 incline for a certain angle along the circumferential direction in the same horizontal plane, the sprayed water flow is tangential to the outer wall of the filter cartridge 141, and the inclination angles of the spray heads 145 on two adjacent layers of side wall ring pipes 143 are opposite; the direction of water flow sprayed from the spray head 145 of the bottom ring pipe 144 is changed, so that the water flow is stirred, and the powder is fully dissolved in the wastewater; the waste water with the powder evenly mixed flows to the waste powder processor 16 along the waste powder processor water supply pipe 15 from the upper part of the tank body, so that the water supply to the waste powder processor 16 is completed, and the secondary utilization of the waste water is realized;
The tank body 142 is arranged in a suspension mode with the same axis, the filter cartridge 141 is externally filtered, waste water flows into the filter cartridge 141 from the outer wall of the filter cartridge 141 to be filtered, powder is blocked to the outer wall of the filter cartridge 141, water flow sprayed out from the spray head 145 of the side wall ring canal 143 is tangential to the outer wall of the filter cartridge 141, the outer wall of the filter cartridge 141 is self-cleaned by flushing of the water flow, and good filtering performance of the filter cartridge 141 can be maintained. The filtered wastewater passes through the filtering return pipe 11 on the upper part of the filter cartridge 141, passes through the side wall of the tank body, flows back to the water bucket 8 of the water dust removal 4 and the water bucket 8 of the spray tower 9, completes the water supplementing of the equipment, realizes the recycling of the wastewater, and simultaneously can reduce the water supplementing amount of the clean water tap 20 so as to achieve the aim of saving water resources.
In general, the invention has the following beneficial effects:
① The waste water generated by the water dust removal 4 and the spray tower 9 is fully stirred by water flows in different directions in the tank body, and the stirred and uniform waste water is used by the waste powder processor 16, so that the secondary utilization of the waste water is realized.
② The filter cartridge 141 is arranged in the tank body in a suspension manner, a part of wastewater is filtered by the filter cartridge 141 and flows back to the water bucket 8 of the water dust removal 4 and the water bucket 8 of the spray tower 9, so that the recycling of the wastewater is realized, and the use amount of clean water is saved.
③ The water flow sprayed by the spray nozzle 145 of the annular pipe 144 at the bottom of the tank body is vertically upward, so that powder deposition is prevented; the water flow sprayed by the spray head 145 of the side wall ring pipe 143 is tangential to the filter cartridge 141, so that the self-cleaning of the filter cartridge 141 is realized; the spray heads 145 on the adjacent two side wall ring pipes 143 are staggered, so that the waste water is thoroughly stirred, and powder deposition is further prevented.
④ Part of the wastewater generated by the water dust collector 4 and the spray tower 9 is used for the secondary utilization of the wastewater powder processor 16, and the other part of the wastewater is filtered by the filter cartridge 141 and flows back to the water dust collector 4 and the spray tower 9, so that the zero discharge of the wastewater of the asphalt station is realized. The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. Zero-discharge treatment device for wastewater of asphalt mixing plant, and is characterized in that
The device comprises a drying cylinder (1), a filter bag dust collector (2), water dust collection (4), a powder tank (18), a waste powder processor (16), a water storage tank assembly (14), a spray tower (9) and asphalt flue gas treatment equipment (7);
The drying cylinder (1) and the filter bag dust collector (2) are sequentially connected with the water dust collector (4), the powder tank (18) is communicated with the bottom of the filter bag dust collector (2) through a fine powder recovery pipe (19), the bottom of the powder tank (18) is communicated with the waste powder processor (16) through a powder conveying screw (17), the water outlet of the water storage tank assembly (14) is respectively communicated with the waste powder processor (16), the water dust collector (4) and the water inlet of the spray tower (9) through corresponding pipelines, and the water outlets of the water dust collector (4) and the spray tower (9) are communicated with the water inlet of the water storage tank assembly (14);
The water storage tank assembly (14) comprises a tank body and a filter cylinder (141) suspended in the tank body, the filter cylinder (141) is externally filtered, a filtering return pipe (11) is communicated with the side wall of the top of the filter cylinder (141), the filtering return pipe (11) is respectively communicated with a spray tower (9) and a water inlet of the water dust removal device (4), the filter cylinder (141) is coaxially arranged with the tank body, a waste powder processor water supply pipe (15) is communicated with the upper part of the side wall of the tank body, and the other end of the waste powder processor water supply pipe (15) is communicated with the water inlet of the waste powder processor (16);
The bottom of the tank body is provided with a bottom ring pipe (144), the side wall of the tank body is internally provided with a plurality of side wall ring pipes (143), the bottom ring pipe (144) and the side wall ring pipes (143) are respectively provided with a spray head (145), the bottom ring pipe (144), the side wall ring pipes (143) are communicated with a sewage pipe (10), and the other end of the sewage pipe (10) is respectively communicated with water outlets of a water dust removing tower (4) and a spray tower (9);
the spray heads (145) on the bottom collar (144) are arranged vertically upwards;
The spray heads (145) on each side wall ring pipe (143) are positioned in the same horizontal plane, incline along the circumference in the same direction and are tangential to the outer side wall of the filter cartridge (141);
the inclination angles of the spray heads (145) on the two adjacent layers of side wall ring pipes (143) are opposite;
The filter bag dust collector (2) is arranged above the drying cylinder (1), an air inlet at the left end of the filter bag dust collector (2) is connected with the drying cylinder (1) in series through an air duct, and an air outlet at the right end of the filter bag dust collector (2) is connected with the water dust collector (4) in series through an air duct (3);
The flame and high-temperature gas of the burner heat stones with various particle sizes in a rotary drying cylinder (1), high-temperature smoke generated by combustion in the drying cylinder (1) and dust in stones raised by rotation of the drying cylinder (1) are sucked and filtered by a filter bag dust remover (2), asphalt smoke is generated in asphalt station production, the asphalt smoke is pretreated by a spray tower (9), the pretreated asphalt smoke is treated by an asphalt smoke treatment device (7), and the recovered powder and water are fully mixed into slurry in a waste powder processor (16) and then are directly discharged.
2. The wastewater zero-discharge treatment device of an asphalt mixing plant according to claim 1, wherein
And one sides of the water dust removal device (4) and the asphalt flue gas treatment device (7) are connected with a chimney assembly (5).
3. The wastewater zero-discharge treatment device of an asphalt mixing plant according to claim 1, wherein
One side of the spray tower (9), the water dust removing device (4) and the waste powder processor (16) is provided with a water bucket (8), the filtering return pipe (11) is communicated with the water bucket (8), and the upper part of the water bucket (8) is provided with a clean water tap (20).
4. The wastewater zero-discharge treatment device of an asphalt mixing plant according to claim 1, wherein
And a drain valve (6) is arranged on the pipeline at the water outlet of the water dedusting (4) and the spray tower (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210876786.8A CN115300970B (en) | 2022-07-25 | 2022-07-25 | Zero-discharge treatment device for wastewater of asphalt mixing plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210876786.8A CN115300970B (en) | 2022-07-25 | 2022-07-25 | Zero-discharge treatment device for wastewater of asphalt mixing plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115300970A CN115300970A (en) | 2022-11-08 |
| CN115300970B true CN115300970B (en) | 2024-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210876786.8A Active CN115300970B (en) | 2022-07-25 | 2022-07-25 | Zero-discharge treatment device for wastewater of asphalt mixing plant |
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| Country | Link |
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| CN (1) | CN115300970B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201261729Y (en) * | 2008-06-13 | 2009-06-24 | 孙成义 | Rotary tower separator |
| CN106390651A (en) * | 2016-06-08 | 2017-02-15 | 福建铁拓机械有限公司 | Integrated tail gas and waste powder treating apparatus of complete set of equipment for regeneration and stirring of asphalt |
| CN207324459U (en) * | 2017-08-24 | 2018-05-08 | 梁平县致远建材有限公司 | A kind of pitch dust pelletizing system |
| CN215140729U (en) * | 2021-04-30 | 2021-12-14 | 山东群峰重工科技股份有限公司 | Organic matter separation device and organic matter separation system capable of efficiently separating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112263886A (en) * | 2020-10-25 | 2021-01-26 | 山东舜鹏建材有限公司 | Asphalt mixing station dustproof system |
-
2022
- 2022-07-25 CN CN202210876786.8A patent/CN115300970B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201261729Y (en) * | 2008-06-13 | 2009-06-24 | 孙成义 | Rotary tower separator |
| CN106390651A (en) * | 2016-06-08 | 2017-02-15 | 福建铁拓机械有限公司 | Integrated tail gas and waste powder treating apparatus of complete set of equipment for regeneration and stirring of asphalt |
| CN207324459U (en) * | 2017-08-24 | 2018-05-08 | 梁平县致远建材有限公司 | A kind of pitch dust pelletizing system |
| CN215140729U (en) * | 2021-04-30 | 2021-12-14 | 山东群峰重工科技股份有限公司 | Organic matter separation device and organic matter separation system capable of efficiently separating |
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| Publication number | Publication date |
|---|---|
| CN115300970A (en) | 2022-11-08 |
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