CN201713317U - Claus sulphur recovery device - Google Patents
Claus sulphur recovery device Download PDFInfo
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- CN201713317U CN201713317U CN2010201771418U CN201020177141U CN201713317U CN 201713317 U CN201713317 U CN 201713317U CN 2010201771418 U CN2010201771418 U CN 2010201771418U CN 201020177141 U CN201020177141 U CN 201020177141U CN 201713317 U CN201713317 U CN 201713317U
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Abstract
The utility model discloses a Claus sulphur recovery device, comprising a main combustion furnace, a main fan control device, an acid gas control device, an air rate control device and an online process analysis feedback device, wherein each control device is respectively provided with a corresponding control module. By utilizing multiple collecting devices synthetically,relevant signals are input to four control modules of the main fan control, the acid gas control, the air rate control and the online process analysis feedback, corresponding control signals are output after operation by all control modules. The Claus sulphur recovery device has the advantages of achieving the purpose of accurately controlling a corresponding adjusting valve and effectively improving the total sulphur yield thereof.
Description
Technical field
The utility model relates to a kind of claus plant.
Background technology
Generally all to produce in the sour natural gas sweetening process and contain H
2The acid gas of S, for air conservation, must be with the H in the acid gas
2S is converted into the sulphur compound of elementary sulfur or other form, and with its recycling.
In gas-processing plant and refinery, to H in the acid gas
2S has mostly adopted improvement claus process recovery sulphur.The main points of this processing method are H in the acid gas
2The oxidation of S is divided into two stages to be finished, and the fs is called the thermal response stage, and the H of 1/3 volume is arranged
2S is oxidized to SO in Reaktionsofen
2, and emit a large amount of reaction heat, and make the Reaktionsofen temperature rise to 950～1250 ℃, under this temperature, H
2S and SO
2Reaction generting element sulphur, its peak rate of conversion can reach about 75%; Subordinate phase is called catalytic reaction stages, the H that does not promptly transform in Reaktionsofen
2S and SO
2According to H
2S/SO
2=2: 1 ratio continues generting element sulphur under the katalysis of catalyzer.
Along with strictness more to airborne release, require retrieving arrangement to have higher sulphur transformation efficiency, in recent years on conventional claus process basis, developed the new process of high sulphur yield, as MCRC, CBA, the CPS of super Crouse and the independent development of CPE southwest branch office etc. make sulfur recovery facility sulphur total recovery bring up to more than 99% from conventional Crouse's (three grades of conversions) 96%.
No matter be the conventional Crouse's method or the novel process of high sulphur yield, guarantee to reach the highest theoretical sulphur yield of this technological process, except the ideal response temperature of the performance of catalyzer and each order reaction, most important condition is to guarantee H in the process gas
2S and SO
2Ratio remain at 2: 1 states, and this perfect condition to be the strict ratio control that enters the acid gas of main reaction stove and air realize.
Strict ratio control is generally by H in the feedforward rate regulation of the acid gas of main reaction stove and air flow quantity and the process gas
2S and SO
2Online concentration analysis feedback regulation two parts form, if the adjusting of this two part can both obtain the ideal regulation quality, the high yield of the sulphur of sulfur recovery facility has just possessed important foundation.
But from the practical operation situation of many covers sulphur unit, the control of the ratio of acid gas and air has been subjected to the interference of various factors, makes the control scheme of original design formulation can not give full play to due effect, and these disturb mainly from the following aspects:
1. H in acid gas flow rate fluctuation and the acid gas
2The variation of S concentration.Because acid gas is from the upstream desulfurizer, this fluctuation is seemingly inevitable, when the frequency of fluctuation and amplitude acquire a certain degree, and its online H
2S/SO
2The tracking performance of ratio feedback regulation will be subjected to great challenge.
2. airwaves.Because air is provided by the blower fan of retrieving arrangement, whether the Controlling System setting of blower fan is reasonable, can directly influence the safe operation of blower fan and the controlling quality of wind/gas ratio;
3. the error of metrical instrument.Comprise the acid gas that participates in ratio control, pressure, temperature and the flow measurement error of air, H
2S and SO
2On-line analysis error product etc. because the error of various measurements, making the former theory of ratio control system that parameter is set will change thereupon, because the uncertainty of some error, makes wind/gas ratio control difficulty more that becomes.
4. the hysteresis characteristic of tail gas feedback regulation.Because the effect of feedforward wind/gas rate regulation will rely on tails assay to check, and the pure hysteresis characteristic of tails assay directly influences the feedback regulation quality, be relevant particularly this pure retardation time with the load of sulfur recovery unit, and this feasible parameter tuning to regulation system is difficult to adapt to different load conditions;
5. the operation interface of wind/gas ratio control system.From the operation of Controlling System in the past, the friendly of operation interface is perfect not enough, when operating mode changes, lack the system self-adaption ability, when manual intervention, lack simple and clear operation interface again, this has influenced Controlling System ground actual effect widely.
The utility model content
The utility model has overcome shortcoming of the prior art, and a kind of claus plant is provided.
The technical solution of the utility model is: a kind of claus plant, comprise main burning furnace, main air blower control device, acid gas control device, general mood ratio control device and online process analysis feedback assembly, wherein:
Described main air blower control device comprises the main air blower control module, described main air blower control module has five signal input parts and three signal output parts, wherein: the 3rd signal input part links to each other with the fans entrance flow transmitter, the second signal input terminus links to each other with the fans entrance temperature transmitter, the 4th signal input part is imported and exported differential pressure transmitter with blower fan and is linked to each other, first signal input part links to each other with current transducer, and the 5th signal input part links to each other with blower fan top hole pressure transmitter; First signal output part links to each other with the fans entrance variable valve, and the second signal output terminal links to each other with blower fan outlet blow-off valve; The 3rd signal output part links to each other with blower fan outlet regulating valve;
Described acid gas control device comprises the acid gas control module, described acid gas control module has nine signal input parts and three signal output parts, wherein: first signal input part links to each other with flow transmitter, the second signal input terminus links to each other with bypass acid flow transmitter, the 3rd signal input part with advance that differential pressure transmitter links to each other before and after the stove acid gas variable valve, the 4th signal input part links to each other with acid gas house steward pressure unit, the 5th signal input part links to each other with acid gas house steward temperature transmitter, the 6th signal input part and acid gas house steward H
2The S on line analyzer links to each other, and the 7th signal input part links to each other with desulfurization regeneration atmospheric pressure control signal, and the 8th signal input part, the 9th signal input part link to each other with two main burning furnace temperature transmitters respectively; First signal output part with advance stove acid gas variable valve and link to each other, the second signal output terminal links to each other with bypass acid gas variable valve, the 3rd signal output part links to each other with an input terminus of general mood ratio control module;
Described general mood ratio control device comprises general mood ratio control module, described general mood ratio control module has nine signal input parts and six signal output parts, wherein: first signal input part links to each other with the first branch road air flow quantity transmitter, the second signal input terminus links to each other with main road air flow quantity transmitter, the 3rd signal input part links to each other with the second branch road air flow quantity transmitter, the 4th signal input part links to each other with blower fan top hole pressure transmitter, the 5th signal input part links to each other with the air main temperature transmitter, the 6th signal input part links to each other with an output terminal of acid gas control module, the 7th signal input part links to each other with an output terminal of online process analysis feedback module, the 8th signal input part with advance stove fuel gas stream transmitter and link to each other, the 9th signal input part with advance stove steam flow transmitter and link to each other; First signal output part links to each other with the first branch road air flow rate adjustment valve, and the second signal output terminal links to each other with the main road air flow rate adjustment valve, and the 3rd signal output part links to each other with the second branch road air flow rate adjustment valve; The 4th signal output part links to each other with an input terminus of online process analysis feedback module, and the 5th signal output part links to each other with the fuel gas stream adjustable valve; The 6th signal output part links to each other with steam flow control valve;
Described online process analysis feedback assembly is included in line process and analyzes feedback module, described online process analysis feedback module has five signal input parts, two signal output parts and two tracking signal input terminuss, sampling spot at process tracheae line is equipped with process gas on line analyzer, process gas on line analyzer has three output terminals, respectively with first signal input part of online process analysis feedback module, the second signal input terminus is connected with the 3rd signal input part, the 4th signal input part links to each other with the 4th output terminal of general mood ratio control module, the 5th signal input part links to each other with analyser on being installed in the acid gas pipeline, the first tracking signal input terminus links to each other with the tracking signal output terminal of general mood ratio control module, and the second tracking signal input terminus switches tracking signal with bypass and links to each other.
Compared with prior art, the utility model has the advantages that: by measuring sensors such as integrated use standard orifice plate throttling set or Venturi tubes, differential pressure transmitter, pressure unit, multiple gathering device such as temperature transmitter and on line analyzer, relevant signal is inputed to main air blower control, acid gas control, control of general mood ratio and online process analysis feedback four big control modules, by each control module by computing, and be connected with the relevant information of four big control modules, export control signal corresponding again, reach the purpose that corresponding variable valve is accurately controlled, improved the sulphur total recovery of claus plant effectively.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is a structural representation of the present utility model.
Embodiment
A kind of claus plant referring to Fig. 1, comprises main burning furnace 6, main air blower control device, acid gas control device, general mood ratio control device and online process analysis feedback assembly.
Described main air blower control device comprises main air blower control module 1, the even speed tube or venturi measuring sensor and the flow transmitter that link to each other with blower fan 5 inlets, be used to detect the fans entrance flow signal, the output terminal of described flow transmitter 11 links to each other with the 3rd signal input part of described main air blower control module 1, and the fans entrance flow signal is delivered to module 4-20mADC; The fans entrance temperature transmitter 12 that links to each other with fans entrance, its output terminal links to each other with the second signal input terminus of described main air blower control module 1, and the fans entrance temperature signal is delivered to module 4-20mADC; Import and export differential pressure transmitter 13 with the blower fan that fans entrance and outlet link to each other respectively, its output terminal links to each other with the 4th signal input part of described main air blower control module 1, blower fan is imported and exported differential pressure signal deliver to module 4-20mADC; The current transducer 14 that links to each other with the motor control center of blower fan, its output terminal links to each other with first signal input part of described main air blower control module 1, and signal is delivered to module 4-20mADC; With the blower fan top hole pressure transmitter 18 that the blower fan outlet links to each other, its output terminal links to each other with the 5th signal input part of described main air blower control module 1, and blower fan top hole pressure signal is delivered to module 4-20mADC; First signal output part of main air blower control module 1 links to each other with fans entrance variable valve 15, and the second signal output terminal of main air blower control module links to each other with blower fan outlet blow-off valve 16; The 3rd signal output part of main air blower control module 1 links to each other with blower fan outlet regulating valve 17.
Described acid gas control device comprises: acid gas control module 2, described acid gas control module has nine signal input parts, the acid flow transmitter 24 of main burning furnace links to each other with first signal input part of acid gas control module, is used to measure the into acid gas flow signal of main burning furnace; Bypass acid flow transmitter 25 links to each other with the second signal input terminus, is used to gather bypass acid gas flow signal; Differential pressure transmitter 28 links to each other with the 3rd signal input part before and after advancing stove acid gas variable valve, is used for gathering stove acid gas variable valve 27 front and back pressure difference signals; Acid gas house steward pressure unit 22 links to each other with the 4th signal input part, is used to gather acid gas house steward pressure inverting signal; Acid gas house steward temperature transmitter 23 links to each other with the 5th signal input part, is used to gather acid gas house steward temperature and becomes feed signals; Acid gas house steward H
2S on line analyzer 21 links to each other with the 6th signal input part, is used for analytical signal is exported to the acid gas control module; The desulfurization regeneration pressure controling signal inputs to the acid gas control module by the 7th signal input part; Two main burning furnace temperature transmitters 29 link to each other with the 8th signal input part, the 9th signal input part respectively, are used to gather the temperature change feed signals of main burning furnace; First signal output part with advance stove acid gas variable valve 27 and link to each other, be used for feeding stove acid gas variable valve with advancing the output of stove acid gas conditioning signal; The second signal output terminal links to each other with bypass acid gas variable valve 26, is used for bypass acid gas conditioning signal is exported to bypass acid gas variable valve; The 3rd signal output part links to each other with an input terminus of the general mood ratio control module of claus plant, and air theory demands amount signal is exported to general mood ratio control module.
Described general mood ratio control device comprises: general mood ratio control module 3, general mood ratio control module have nine signal input parts and six signal output parts; The first branch road air flow quantity transmitter 311 links to each other with first signal input part, is used to gather the first branch road air flow rate signal; Main road air flow quantity transmitter 322 links to each other with the second signal input terminus, is used to gather the main road air flow rate signal; The second branch road air flow quantity transmitter 333 links to each other with the 3rd signal input part, is used to gather the second branch road air flow rate signal; With the blower fan top hole pressure transmitter 18 that the blower fan outlet links to each other, its output terminal links to each other with the 4th signal input part, is used to gather the air main pressure signal; Air main temperature transmitter 34 links to each other with the 5th signal input part, is used to gather the air main temperature signal; The 6th signal input part links to each other with an output terminal of acid gas control module, is used for acid gas reaction theory air requirements signal is inputed to general mood ratio control module; The 7th signal input part links to each other with an output terminal of online process analysis feedback module, is used for that output signal is regulated in the tail gas on-line analysis and inputs to general mood ratio control module; Advance stove fuel gas stream transmitter 344, link to each other, be used for gathering stove fuel gas flow signal with the 8th signal input part; Advance stove steam flow transmitter 355, link to each other, be used for gathering stove steam flow signal with the 9th signal input part; First signal output part links to each other with the first branch road air flow rate adjustment valve 31, and the second signal output terminal links to each other with main road air flow rate adjustment valve 32, and the 3rd signal output part links to each other with the second branch road air flow rate adjustment valve 33; The 4th signal output part links to each other with an input terminus of online process analysis feedback module, and the airload of will being correlated with signal is exported to online process analysis feedback module; The 5th signal output part links to each other with fuel gas stream adjustable valve 35; The 6th signal output part links to each other with steam flow control valve 36.
Described online process analysis feedback assembly comprises: online process analysis feedback module 4, and described online process analysis feedback module has five signal input parts, two signal output parts and two tracking signal input terminuss; Sampling spot at process tracheae line is equipped with process gas on line analyzer 41, process gas on line analyzer has three output terminals, be connected with first signal input part, second signal input terminus and the 3rd signal input part of online process analysis feedback module respectively, be used for tail gas H
2S and 2SO
2Residual quantity signal, H
2The cont signal of S and SO
2Cont signal input to online process analysis feedback module; The 4th signal input part links to each other with the 4th output terminal of general mood ratio control module, is used for relevant airload signal is inputed to online process analysis feedback module; The 5th signal input part links to each other with analyser on being installed in the acid gas pipeline, is used for the H with acid gas
2The cont signal of S inputs to online process analysis feedback module; First signal output part is used for feedback control signal is exported to general mood ratio control module; The second signal output terminal is used for super Crouse's oxidation air control signal is exported to super Crouse's oxidation air variable valve; The first tracking signal input terminus links to each other with the tracking signal output terminal of general mood ratio control module, is used for first tracking signal is inputed to online process analysis feedback module; The second tracking signal input terminus is used for that tracking signal is switched in bypass and inputs to online process analysis feedback module.
Claims (1)
1. a claus plant comprises main burning furnace, main air blower control device, acid gas control device, general mood ratio control device and online process analysis feedback assembly, it is characterized in that:
Described main air blower control device comprises the main air blower control module, described main air blower control module has five signal input parts and three signal output parts, wherein: the 3rd signal input part links to each other with the fans entrance flow transmitter, the second signal input terminus links to each other with the fans entrance temperature transmitter, the 4th signal input part is imported and exported differential pressure transmitter with blower fan and is linked to each other, first signal input part links to each other with current transducer, and the 5th signal input part links to each other with blower fan top hole pressure transmitter; First signal output part links to each other with the fans entrance variable valve, and the second signal output terminal links to each other with blower fan outlet blow-off valve; The 3rd signal output part links to each other with blower fan outlet regulating valve;
Described acid gas control device comprises the acid gas control module, described acid gas control module has nine signal input parts and three signal output parts, wherein: first signal input part links to each other with flow transmitter, the second signal input terminus links to each other with bypass acid flow transmitter, the 3rd signal input part with advance that differential pressure transmitter links to each other before and after the stove acid gas variable valve, the 4th signal input part links to each other with acid gas house steward pressure unit, the 5th signal input part links to each other with acid gas house steward temperature transmitter, the 6th signal input part and acid gas house steward H
2The S on line analyzer links to each other, and the 7th signal input part links to each other with desulfurization regeneration atmospheric pressure control signal, and the 8th signal input part, the 9th signal input part link to each other with two main burning furnace temperature transmitters respectively; First signal output part with advance stove acid gas variable valve and link to each other, the second signal output terminal links to each other with bypass acid gas variable valve, the 3rd signal output part links to each other with an input terminus of general mood ratio control module;
Described general mood ratio control device comprises general mood ratio control module, described general mood ratio control module has nine signal input parts and six signal output parts, wherein: first signal input part links to each other with the first branch road air flow quantity transmitter, the second signal input terminus links to each other with main road air flow quantity transmitter, the 3rd signal input part links to each other with the second branch road air flow quantity transmitter, the 4th signal input part links to each other with blower fan top hole pressure transmitter, the 5th signal input part links to each other with the air main temperature transmitter, the 6th signal input part links to each other with an output terminal of acid gas control module, the 7th signal input part links to each other with an output terminal of online process analysis feedback module, the 8th signal input part with advance stove fuel gas stream transmitter and link to each other, the 9th signal input part with advance stove steam flow transmitter and link to each other; First signal output part links to each other with the first branch road air flow rate adjustment valve, and the second signal output terminal links to each other with the main road air flow rate adjustment valve, and the 3rd signal output part links to each other with the second branch road air flow rate adjustment valve; The 4th signal output part links to each other with an input terminus of online process analysis feedback module, and the 5th signal output part links to each other with the fuel gas stream adjustable valve; The 6th signal output part links to each other with steam flow control valve;
Described online process analysis feedback assembly is included in line process and analyzes feedback module, described online process analysis feedback module has five signal input parts, two signal output parts and two tracking signal input terminuss, sampling spot at process tracheae line is equipped with process gas on line analyzer, process gas on line analyzer has three output terminals, respectively with first signal input part of online process analysis feedback module, the second signal input terminus is connected with the 3rd signal input part, the 4th signal input part links to each other with the 4th output terminal of general mood ratio control module, the 5th signal input part links to each other with analyser on being installed in the acid gas pipeline, the first tracking signal input terminus links to each other with the tracking signal output terminal of general mood ratio control module, and the second tracking signal input terminus switches tracking signal with bypass and links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201771418U CN201713317U (en) | 2010-05-04 | 2010-05-04 | Claus sulphur recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201771418U CN201713317U (en) | 2010-05-04 | 2010-05-04 | Claus sulphur recovery device |
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| Publication Number | Publication Date |
|---|---|
| CN201713317U true CN201713317U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201771418U Expired - Lifetime CN201713317U (en) | 2010-05-04 | 2010-05-04 | Claus sulphur recovery device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718192A (en) * | 2011-08-18 | 2012-10-10 | 中国石油集团工程设计有限责任公司 | Low temperature Claus cooling bed adsorption optimal control method |
| CN104150448A (en) * | 2014-07-22 | 2014-11-19 | 北京华创睿控科技有限公司 | H2S/SO2 ratio control system of sulfur recovery device |
| CN105468039A (en) * | 2007-06-21 | 2016-04-06 | 氟石科技公司 | Air demand feedback control systems and methods for sulfur recovery units |
| CN113739592A (en) * | 2021-09-18 | 2021-12-03 | 山东三维化学集团股份有限公司 | Automatic control method and system for sulfur production combustion furnace |
-
2010
- 2010-05-04 CN CN2010201771418U patent/CN201713317U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105468039A (en) * | 2007-06-21 | 2016-04-06 | 氟石科技公司 | Air demand feedback control systems and methods for sulfur recovery units |
| CN102718192A (en) * | 2011-08-18 | 2012-10-10 | 中国石油集团工程设计有限责任公司 | Low temperature Claus cooling bed adsorption optimal control method |
| CN102718192B (en) * | 2011-08-18 | 2013-10-30 | 中国石油集团工程设计有限责任公司 | Low temperature Claus cooling bed adsorption optimal control method |
| CN104150448A (en) * | 2014-07-22 | 2014-11-19 | 北京华创睿控科技有限公司 | H2S/SO2 ratio control system of sulfur recovery device |
| CN104150448B (en) * | 2014-07-22 | 2016-03-30 | 北京华创睿控科技有限公司 | A kind of sulfur recovery facility H 2s/SO 2ratio control system |
| CN113739592A (en) * | 2021-09-18 | 2021-12-03 | 山东三维化学集团股份有限公司 | Automatic control method and system for sulfur production combustion furnace |
| CN113739592B (en) * | 2021-09-18 | 2023-12-08 | 山东三维化学集团股份有限公司 | Automatic control method and system for sulfur-making combustion furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180110 Address after: 610041 Chengdu high tech Zone, Sichuan province sublimation Road No. 6 Patentee after: China Petroleum Engineering Construction Co Ltd Address before: 610017 Sichuan province Chengdu Xiaoguan Temple Backstreet No. 25 Patentee before: Engineering Design Co., Ltd., China Petroleum Group |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |