CN103712416B - The method controlling crude krypton xenon concentration tower reboiler power - Google Patents
The method controlling crude krypton xenon concentration tower reboiler power Download PDFInfo
- Publication number
- CN103712416B CN103712416B CN201310743394.5A CN201310743394A CN103712416B CN 103712416 B CN103712416 B CN 103712416B CN 201310743394 A CN201310743394 A CN 201310743394A CN 103712416 B CN103712416 B CN 103712416B
- Authority
- CN
- China
- Prior art keywords
- power
- reboiler
- temperature
- rectifying column
- krypton xenon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a kind of method controlling crude krypton xenon concentration tower reboiler power, it is applied in rectifying column tower system, comprise the following steps: that S1. records all temperature points of rectifying column tower system and is T1, in the way of manual adjustments reboiler power, evaporate rapidly the liquid oxygen of rectifier bottoms；S2. progressively reduce the output of reboiler power when rectifying column tower system middle and lower part temperature is increased to about T2 gradually, constantly regulate power output, make temperature tend towards stability；S3. when temperature is hovered record reboiler performance number now between T3～T4, parameter as power base value, control to change into be automatically adjusted by the power of reboiler, rectifying column tower system control point temperature is carried out temperature control, revise adjustment factor according to the change of power and temperature value simultaneously, make temperature stable further。The purpose that the inventive method reaches liquid oxygen noresidue, krypton xenon is not escaped, reboiler operating condition is stable。
Description
Technical field
The present invention relates to Deep Cooling Method technology, particularly relate to a kind of method controlling crude krypton xenon concentration tower reboiler power。
Background technology
Deep Cooling Method is in liquid oxygen during concentrated krypton-xenon mixture, by liquid oxygen is heated krypton xenon mixed liquor (Kr+Xe >=99.99%) after making liquid oxygen evaporation to be concentrated by the reboiler of rectifier bottoms。Should ensureing that liquid oxygen evaporates completely, leave krypton xenon mixed liquor simultaneously, it is ensured that krypton xenon is not escaped from rectifying tower top, therefore the changed power of tower bottom reboiler is huge on concentrated effect impact。If power is too big, krypton xenon mixture can gasify together along with liquid oxygen, rises to rectifying column top, finally escapes out rectifying column, causes high-purity krypton, high-purity xenon extraction ratio to decline；In turn, if power is too little, then liquid oxygen evaporation is not exclusively, enters follow-up rectifying column with krypton-xenon concentrate together, causes that final products purity cannot be up to standard。When practical operation, if by operator's Non-follow control, then need frequently to intervene the power output of reboiler, excessively expend the energy of operator, if and manual control rectifying column temperature sometimes changes suddenly but not discovery in time, response, make adjustment, then can cause that power, variations in temperature fluctuation range stable conditions very big, to rectifying column brings inconvenience, even destroy the overall operating mode of rectifying column。
Summary of the invention
In view of this, it is an object of the invention to provide a kind of method controlling crude krypton xenon concentration tower reboiler power, certain the some temperature for krypton xenon concentration tower carries out Special controlling, reaches liquid oxygen noresidue, krypton xenon is not escaped, reboiler operating condition is stable purpose。
In order to achieve the above object, it is an object of the invention to be achieved through the following technical solutions:
A kind of method controlling crude krypton xenon concentration tower reboiler power, is applied in rectifying column tower system, wherein, comprises the following steps:
S1. record all temperature points of rectifying column tower system and be T1, in the way of manual adjustments reboiler power, evaporate rapidly the liquid oxygen of rectifier bottoms；
S2. progressively reduce the output of reboiler power when rectifying column tower system middle and lower part temperature is increased to about T2 gradually, constantly regulate power output, make temperature tend towards stability；
S3. when temperature is hovered record reboiler performance number now between T3～T4, parameter as power base value, control to change into be automatically adjusted by the power of reboiler, rectifying column tower system control point temperature is carried out temperature control, revise adjustment factor according to the change of power and temperature value simultaneously, make temperature stable further。
The method of above-mentioned crude krypton xenon concentration tower reboiler power, wherein, the computational methods of described reboiler power perform following equation:
P=P1+K*(0.5-P0)；
Wherein P represents reboiler power, and P1 represents power base value, to limit the basis of reboiler changed power；K represents adjustment factor, to limit the step-length of reboiler changed power；P0 represents and is automatically adjusted power。
The method of above-mentioned crude krypton xenon concentration tower reboiler power, wherein, described power base value P1 and described adjustment factor K is manual setting。
The method of above-mentioned crude krypton xenon concentration tower reboiler power, wherein, described in be automatically adjusted power P 0 and adopt PID regulative mode。
The method of above-mentioned crude krypton xenon concentration tower reboiler power, wherein, described T1 is-165 DEG C, and T2 is-133 DEG C, and T3 is-132 DEG C, and T4 is-135 DEG C。
Compared with the prior art, the beneficial effects of the present invention is:
Liquid oxygen noresidue, krypton xenon is not escaped, and reboiler operating condition is stable。
Accompanying drawing explanation
The accompanying drawing constituting the part of the present invention is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention。In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the method for crude krypton xenon concentration tower reboiler power of the present invention；
Fig. 2 be crude krypton xenon concentration tower reboiler power of the present invention method in the structural representation of rectifying column tower system；
Fig. 3 be crude krypton xenon concentration tower reboiler power of the present invention method in the formula schematic diagram of reboiler power calculation algorithms。
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
It should be noted that when not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined。
The embodiment of the present invention provides a kind of method controlling crude krypton xenon concentration tower reboiler power, is applied in rectifying column tower system。
This control method is divided into manually intervenes and is automatically adjusted two parts, referring to Fig. 1 and Fig. 3, controls formula as follows:
Reboiler output P=power base value P1+ adjustment factor K(0.5-is automatically adjusted power P 0), wherein P represents reboiler power, and P1 represents power base value, to limit the basis of reboiler changed power；K represents adjustment factor, to limit the step-length of reboiler changed power；P0 represents and is automatically adjusted power。
Power base value P1 and adjustment factor K is manual setting, and visual different operating modes are modified。
Being automatically adjusted the adjustment that power P 0 is PID regulator to export, the parameter that actuator controls chooses the temperature of a certain temperature point on rectifying column。
Power base value P1 defines the basis of reboiler changed power, and namely when carrying out temperature control and regulating, the output of reboiler is all with the numerical value of P1 for benchmark。
Adjustment factor K defines the step-length of reboiler changed power, and the stride that namely temperature control regulates every time is X%*K。
Being automatically adjusted the output that power P 0 is Power Regulation signal, rectifying column middle and lower part point temperature is carried out PID adjustment, regulative mode is positive characteristic, and the excursion of reboiler power has then been limited in the scope of power base value P1 ± 0.5K by (0.5-P0)。
In a preferred embodiment of the invention, carry out according to following step:
With continued reference to Fig. 1 to Fig. 3, the adjustment initial stage, the all temperature points of rectifying column tower system are-165 DEG C (T1), in the way of manual adjustments P, now evaporate rapidly the liquid oxygen of rectifier bottoms, the output of P is progressively reduced when rectifying column tower system middle and lower part temperature is increased to-133 DEG C of (T2) left and right gradually, now temperature ascendant trend slows down, constantly regulate power output, temperature is made to tend towards stability, when temperature is hovered record reboiler power P value now between-132 DEG C (T3)～-135 DEG C (T4), as the parameter of power base value P1。Now control to change into be automatically adjusted by the power of reboiler, rectifying column tower system control point temperature is carried out temperature control, simultaneously the change according to power and temperature value, revise adjustment factor K, make temperature stable further。Now, the value of P1 and K is the best setup parameter of operation the operation that can maintain a long-term stability。
Above specific embodiments of the invention being described in detail, but the present invention is not restricted to particular embodiments described above, it is intended only as example。To those skilled in the art, any equivalent modifications and replacement are also all among scope of the invention。Therefore, equalization done without departing from the spirit and scope of the invention converts and amendment, all should contain within the scope of the invention。
Claims (5)
1. the method controlling crude krypton xenon concentration tower reboiler power, is applied in rectifying column tower system, it is characterised in that comprise the following steps:
S1. record all temperature points of rectifying column tower system and be T1, in the way of manual adjustments reboiler power, evaporate rapidly the liquid oxygen of rectifier bottoms；
S2. progressively reduce the output of reboiler power when rectifying column tower system middle and lower part temperature is increased to about T2 gradually, constantly regulate power output, make temperature tend towards stability；
S3. when temperature is hovered record reboiler performance number now between T3～T4, parameter as power base value, control to change into be automatically adjusted by the power of reboiler, rectifying column tower system control point temperature is carried out temperature control, revise adjustment factor according to the change of power and temperature value simultaneously, make temperature stable further。
2. the method controlling crude krypton xenon concentration tower reboiler power according to claim 1, it is characterised in that the computational methods of described reboiler power perform following equation:
P=P1+K* (0.5-P0)；
Wherein P represents reboiler power, and P1 represents power base value, to limit the basis of reboiler changed power；K represents adjustment factor, to limit the step-length of reboiler changed power；P0 represents and is automatically adjusted power。
3. the method controlling crude krypton xenon concentration tower reboiler power according to claim 2, it is characterised in that described power base value P1 and described adjustment factor K is manual setting。
4. the method for crude krypton xenon concentration tower reboiler power according to claim 2, it is characterised in that described in be automatically adjusted power P 0 and adopt PID regulative mode。
5. the method for crude krypton xenon concentration tower reboiler power according to any one in Claims 1-4, it is characterised in that described T1 is-165 DEG C, and T2 is-133 DEG C, and T3 is-132 DEG C, and T4 is-135 DEG C。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743394.5A CN103712416B (en) | 2013-12-27 | 2013-12-27 | The method controlling crude krypton xenon concentration tower reboiler power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743394.5A CN103712416B (en) | 2013-12-27 | 2013-12-27 | The method controlling crude krypton xenon concentration tower reboiler power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103712416A CN103712416A (en) | 2014-04-09 |
| CN103712416B true CN103712416B (en) | 2016-06-22 |
Family
ID=50405589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310743394.5A Active CN103712416B (en) | 2013-12-27 | 2013-12-27 | The method controlling crude krypton xenon concentration tower reboiler power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103712416B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108031138A (en) * | 2017-12-14 | 2018-05-15 | 浙江新锐空分设备有限公司 | A kind of krypton xenon concentration tower bottom heat of evaporation source system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB927518A (en) * | 1959-11-23 | 1963-05-29 | British Oxygen Co Ltd | Process for the separation of krypton and xenon from mixture with oxygen |
| CN1192423A (en) * | 1997-03-04 | 1998-09-09 | 林德股份公司 | Method for obtg. Kr and Xe |
| CN101726158A (en) * | 2009-11-12 | 2010-06-09 | 上海启元科技发展有限公司 | Method for removing oxygen and methane from concentrated krypton-xenon liquid |
| CN202216489U (en) * | 2011-07-21 | 2012-05-09 | 上海启元空分技术发展股份有限公司 | Containing CO2Device for separating krypton-xenon concentrate from methane |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743185A (en) * | 1980-08-29 | 1982-03-11 | Nippon Oxygen Co Ltd | Production of krypton and xenon |
| JP2012007990A (en) * | 2010-06-24 | 2012-01-12 | Taiyo Nippon Sanso Corp | Liquid level meter and measurement method of liquid level, and rectifying column and operation method of rectifying column |
-
2013
- 2013-12-27 CN CN201310743394.5A patent/CN103712416B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB927518A (en) * | 1959-11-23 | 1963-05-29 | British Oxygen Co Ltd | Process for the separation of krypton and xenon from mixture with oxygen |
| CN1192423A (en) * | 1997-03-04 | 1998-09-09 | 林德股份公司 | Method for obtg. Kr and Xe |
| CN101726158A (en) * | 2009-11-12 | 2010-06-09 | 上海启元科技发展有限公司 | Method for removing oxygen and methane from concentrated krypton-xenon liquid |
| CN202216489U (en) * | 2011-07-21 | 2012-05-09 | 上海启元空分技术发展股份有限公司 | Containing CO2Device for separating krypton-xenon concentrate from methane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103712416A (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107096252B (en) | The method that the top of the distillation column cooling capacity automatically controls | |
| CN103452608B (en) | A kind of control gear for condensate system and controlling method | |
| CN104808705B (en) | A kind of turbine governor system control parameter setting method of feature based parameter | |
| CN104089270A (en) | Optimization and adjustment testing method for load control of generator set boiler | |
| CN107975519B (en) | Servo hydraulic energy double-closed-loop control system and method | |
| CN103712416B (en) | The method controlling crude krypton xenon concentration tower reboiler power | |
| CN113440884B (en) | Tower set temperature self-adaptive adjusting method, system and storage medium | |
| CN111878964B (en) | Control method and device of electronic expansion valve, air conditioner and storage medium | |
| CN102707620A (en) | Backpressure control system of large air-cooler unit | |
| CN107045279A (en) | Suitable for the dynamic assignment PID heating control systems and method of high vacuum environment | |
| CN110308647A (en) | The unmanned plane three-stage fuzzy PID control method of the input item containing error intergal | |
| CN105537281B (en) | A kind of method for improving control precision of coiling temperature under layer chill type | |
| CN107023816A (en) | The control method and control system of boiler centrum's temperature | |
| CN104730925A (en) | Input amplitude limiting PI control method | |
| CN108054787B (en) | Method for determining AGC (automatic gain control) regulation rate requirement of wind power system | |
| CN218339010U (en) | Automatic control system of bromine distillation tower | |
| CN203962058U (en) | A kind of control gear for condensate system | |
| CN206644358U (en) | Casting films automatic assembly line | |
| CN113467331B (en) | Method for analyzing influence of controller parameters on automatic power generation control regulation performance | |
| CN103344115A (en) | Novel sintering machine speed control method | |
| CN111338210A (en) | Garbage generator set steam temperature control method based on independent modulation cascade strategy | |
| CN104852402A (en) | System and method for adjusting unit feedforward quantity | |
| CN113877231A (en) | Automatic load increasing and decreasing intelligent control method for methanol rectification device | |
| CN203569203U (en) | Automatic control device in nickel electrolysis purification and iron removal process | |
| CN103983085A (en) | Method for controlling temperature of krypton and xenon separation tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210629 Address after: 201800 rooms 202 and 204, building 3, 150 Heyu Road, Jiading District, Shanghai Patentee after: SHANGHAI QIYUAN GAS DEVELOPMENT Co.,Ltd. Address before: 201800 150 Heyu Road, Jiading District, Shanghai Patentee before: SHANGHAI QIYUAN AIR SEPARATE TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |