CN105879606A - Sulfur blockage preventing system based on wet redox desulfurization process - Google Patents

Sulfur blockage preventing system based on wet redox desulfurization process Download PDF

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Publication number
CN105879606A
CN105879606A CN201610392221.7A CN201610392221A CN105879606A CN 105879606 A CN105879606 A CN 105879606A CN 201610392221 A CN201610392221 A CN 201610392221A CN 105879606 A CN105879606 A CN 105879606A
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CN
China
Prior art keywords
sulfur
absorption tower
regenerator
pipeline
outlet
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Application number
CN201610392221.7A
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Chinese (zh)
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CN105879606B (en
Inventor
朱红彬
李清方
颜廷敏
张硕琳
李金环
张新军
张启阳
于惠娟
傅莉
董健
张宁宁
王书平
吴鲁宁
王子明
Original Assignee
中石化节能环保工程科技有限公司
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Priority to CN201610392221.7A priority Critical patent/CN105879606B/en
Publication of CN105879606A publication Critical patent/CN105879606A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/52Hydrogen sulfide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/73After-treatment of removed components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/96Regeneration, reactivation or recycling of reactants

Abstract

The invention discloses a sulfur blockage preventing system based on a wet redox desulfurization process. The sulfur blockage preventing system comprises a separator, an absorption tower, a flash tank, a regeneration tower, a circulating pump, an air blower, a centrifuge, a barren liquor tank and a sulphur foam trough. The separator is connected with a gas inlet of the absorption tower, a rich liquor outlet of the absorption tower is connected with a feeding port of the flash tank, and a discharging port of the flash tank is connected with a feeding port of the regeneration tower; a barren liquor outlet of the regeneration tower is connected with the barren liquor tank, and the barren liquor tank is connected with a barren liquor inlet of the absorption tower through a first pipeline; the top of the regeneration tower is communicated with an inlet of the sulphur foam trough, and an outlet of the sulphur foam trough is communicated with a feeding port of the centrifuge; a washing liquid inlet is formed in the absorption tower, the desulfurization system further comprises a second pipeline, an inlet of the second pipeline is communicated with the first pipeline, and an outlet of the second pipeline is communicated with the washing liquid inlet in the absorption tower. According to the sulfur blockage preventing system, washing pipelines are installed at the bottoms of the absorption tower and the regeneration tower respectively to wash the absorption tower and the regeneration tower regularly, so that sulphur particles are preventing from adhering to or settling on the walls of the absorption tower and the regeneration tower.

Description

A kind of anti-sulfur based on wet oxidation reduction and desulfurization process blocks up system
Technical field
The present invention relates to wet oxidation desulfurization technique, be specifically related to a kind of anti-sulfur based on wet oxidation reduction and desulfurization process and block up system.
Background technology
Wet oxidation reduction and desulfurization method is that a kind of solution utilized containing the carrier of oxygen is by the H in natural gas2S is oxidized to elementary sulfur and the selexol process method of carrier of oxygen oxidation by air regeneration.In conventional wet type oxidation-reduction process technique, absorption process and regenerative process are carried out respectively in absorption tower and two reactors of regenerator, compared with the amine method generally used in natural gas purification or sulfone amine desulfurization-Claus sulfur recovery-vent gas treatment route, it is characterized in that a step is by H2S is converted into simple substance S, and the method has that flow process is simple, invest relatively low advantage.But owing to desulfuration solution containing solid phase sulfur, faster than amine method analysis sulfur speed, cause sulfur to have little time to reclaim, there is sulfur blocks up problem, affects the lasting safe operation of equipment;Further, need to stop production and be carried out equipment when sulfur blocks up, this also result in the biggest economic loss.
Summary of the invention
The technical problem to be solved in the present invention is, for the deficiencies in the prior art, it is provided that a kind of periodic flushing equipment, based on wet oxidation reduction and desulfurization process the anti-sulfur that effectively prevents sulfur stifled can block up system.
The technical solution used in the present invention is: a kind of anti-sulfur based on wet oxidation reduction and desulfurization process blocks up system, including separator, absorption tower, flash tank, regenerator, circulating pump, aerator, centrifuge, lean flow container and sulfur foam groove, the entrance of described separator and sulfur-containing gas pipeline communication, the outlet of separator is connected with the air inlet on absorption tower, the gas outlet on absorption tower is connected with the purification feed channel of peripheral hardware, the rich solution outlet on absorption tower is connected with the charging aperture of flash tank, the gas outlet of flash tank is connected with flashed vapour pipeline, the discharging opening of flash tank is connected with the charging aperture of regenerator;The lean solution outlet of regenerator is connected with lean flow container through pipeline, and lean flow container is connected with the entrance of circulating pump, and circulation delivery side of pump is connected with the lean solution entrance on absorption tower by the first pipeline;The top of regenerator connects with the entrance of sulfur foam groove, and the outlet of sulfur foam groove connects with the charging aperture of centrifuge, and the discharging opening of centrifuge is connected with the storage sulfur equipment of peripheral hardware, and the liquid outlet of centrifuge is connected with lean flow container;Offering cleaning mixture import on described absorption tower, described desulphurization system also includes second pipe, the entrance of second pipe and the first pipeline communication, the outlet of second pipe and the cleaning mixture inlet communication on absorption tower.
By such scheme, described regenerator offering flushing liquor import, described desulphurization system also includes the 3rd pipeline, the entrance of the 3rd pipeline and the first pipeline communication, the outlet of the 3rd pipeline and the flushing liquor inlet communication of regenerator.
By such scheme, the bottom on described absorption tower is provided with the first conical head.
By such scheme, the cleaning mixture import on described absorption tower is opened in the top of the first conical head;The rich solution outlet on described absorption tower is opened in the bottom of the first conical head.
By such scheme, the bottom of described regenerator is provided with the second conical head.
By such scheme, the flushing liquor import of described regenerator is opened in the top of the second conical head, and the lean solution outlet of described regenerator is opened in the bottom of the second conical head.
By such scheme, being installed on elevator pump on the pipeline that regenerator connects with lean flow container, elevator pump is connected with the top of regenerator by pipeline.
The invention have the benefit that
1, it is being separately installed with clean-up line at the bottom of the tower of absorption tower and regenerator, two groups of clean-up lines are all with the doctor solution lean solution that flows out from regenerator as flushing liquor, periodically absorption tower and regenerator are circulated flushing respectively, preventing drusen to adhere to precipitation on the tower wall of absorption tower and regenerator, the safe operation for system provides guarantee;Two groups of clean-up lines do not introduce other flushing liquor, make full use of intrasystem circulation liquid, and can be rinsed in the case of not parking, it is ensured that the lasting Effec-tive Function of desulphurization system, it is to avoid owing to sulfur is stifled or rinses the economic loss stopped and bring.
2, absorption tower and regenerator use conical head respectively, going out liquid bottom end socket, shortening the drusen time of staying in tower, beneficially sulfur simple substance quickly discharges outside tower, reduce drusen and be attached to the chance of tower wall, it is to avoid sulfur is at accumulation blocking liquid outlet at the bottom of tower.
3, a part of lean solution discharged bottom regenerator is promoted to regenerator tower top by elevator pump, make the remaining sulfur in lean solution become sulfur foam to discharge from the tower top of regenerator, on the one hand avoid producing tower in attachment precipitation at the bottom of tower to block up, be on the other hand greatly reduced the content of sulfur simple substance in lean solution.
Accompanying drawing explanation
Fig. 1 is the structural representation of one specific embodiment of the present invention.
Wherein: 1, separator;2, absorption tower;2.1, the first conical head;3, flash tank;4, regenerator;4.1, the second conical head;5, sulfur foam groove;6, centrifuge;7, lean flow container;8, circulating pump;9, aerator;10, elevator pump;11, the first pipeline;12, second pipe;13, the 3rd pipeline.
Detailed description of the invention
In order to be more fully understood that the present invention, with specific embodiment, the present invention is further described below in conjunction with the accompanying drawings.
A kind of based on wet oxidation reduction and desulfurization process anti-sulfur as shown in Figure 1 blocks up system, including separator 1, absorption tower 2, flash tank 3, regenerator 4, circulating pump 8, aerator 9, centrifuge 6, lean flow container 7 and sulfur foam groove 5, the entrance of separator 1 is connected with sulfur-containing gas pipeline, the outlet of separator 2 is connected with the air inlet on absorption tower 2, the gas outlet on absorption tower 2 is connected with the purification feed channel of peripheral hardware, the rich solution outlet on absorption tower 2 is connected with the charging aperture of flash tank 3, and the gas outlet of flash tank 3 is connected with flashed vapour pipeline;The discharging opening of flash tank 3 is connected with the charging aperture of regenerator 4, and the lean solution outlet of regenerator 4 is connected with lean flow container 7 through pipeline;Lean flow container 7 is connected with the entrance of circulating pump 8, and the outlet of circulating pump 8 is connected with the lean solution entrance on absorption tower 2 by the first pipeline 11;The top of regenerator 4 connects with the entrance of sulfur foam groove 5, and the outlet of sulfur foam groove 5 connects with the charging aperture of centrifuge 6, and the discharging opening of centrifuge 6 is connected with the storage sulfur equipment of peripheral hardware, and the liquid outlet of centrifuge 6 is connected with lean flow container 7.
Offering cleaning mixture import on absorption tower 2, described desulphurization system also includes second pipe 12, and entrance and first pipeline 11 of second pipe 12 connect, the outlet of second pipe 12 and the cleaning mixture inlet communication on absorption tower 2;Offering flushing liquor import on regenerator 4, described desulphurization system also includes the 3rd pipeline 13, and entrance and first pipeline 11 of the 3rd pipeline 13 connect, the outlet of the 3rd pipeline 13 and the flushing liquor inlet communication of regenerator 4.Second pipe 12 is the clean-up line on absorption tower 2, and the 3rd pipeline 13 is the clean-up line of regenerator 4.Do not introduce other flushing liquor, make full use of intrasystem circulation liquid, in the case of not parking, two groups of clean-up lines are all with the doctor solution lean solution that flows out from regenerator 4 as flushing liquor, periodically absorption tower 2 and regenerator 4 are circulated flushing respectively, it is therefore prevented that drusen adheres to precipitation on the tower wall of absorption tower 2 and regenerator 4.
The bottom on absorption tower 2 is provided with the first conical head 2.1, and the cleaning mixture import on absorption tower 2 is opened in the top of the first conical head 2.1;The rich solution outlet on absorption tower 2 is opened in the bottom of the first conical head 2.1;The bottom of regenerator 4 is provided with the second conical head 4.1, and the flushing liquor import of regenerator 4 is opened in the top of the second conical head 4.1, and the lean solution outlet of regenerator 4 is opened in the bottom of the second conical head 4.1.Absorption tower 2 and regenerator 4 arrange conical head in bottom respectively, going out liquid bottom end socket, shortening the drusen time of staying in tower, beneficially sulfur simple substance quickly discharges outside tower, reduce drusen and be attached to the chance of tower wall, it is to avoid sulfur is at accumulation blocking liquid outlet at the bottom of tower.
Being installed on elevator pump 10 with lean flow container 7 on the pipeline that regenerator 4 connects, elevator pump 10 is connected with the top of regenerator 4 by pipeline, circulates bottom belt drusen lean solution.The a part of lean solution discharged bottom regenerator 4 is promoted to regenerator 4 tower top by elevator pump 10, make the remaining sulfur in lean solution become sulfur foam to discharge from the tower top of regenerator 4, on the one hand avoid producing tower in attachment precipitation at the bottom of tower to block up, be on the other hand greatly reduced the content of sulfur simple substance in lean solution.
The wet oxidation reduction and desulfurization system process that the anti-sulfur that the present invention provides blocks up is as follows: after sulfur-containing gas separated device 1 initial gross separation, enter absorption tower 2, sulfur in natural gas becomes purification gas after being absorbed by the doctor solution in absorption tower 2, discharges from purifying feed channel;Doctor solution in absorption tower 2 becomes rich solution and has part sulfur simple substance to produce after absorbing sulfur, and the rich solution containing sulfur simple substance is quickly discharged from the bottom on absorption tower 2, after flash tank 3 flash distillation is reduced pressure, after entering regenerator 4;Aerator 9 blasts air oxidation in regenerator 4, and rich solution is regenerated as lean solution in regenerator 4, is discharged from the bottom of regenerator 4 by elevator pump 10;Part lean solution back flows back into regenerator 4 and carries out desulfurization regeneration, and part lean solution enters lean liquid bath 7;Enter the lean solution in lean flow container 7 to promote rear section through circulating pump 8 and return to absorption tower 2 circulation desulfurization, part enters the cleaning mixture import on absorption tower 2 through second pipe 12, being rinsed absorption tower 2, part enters the flushing liquor import of regenerator 4 through the 3rd pipeline 13, is rinsed regenerator 4;Sulfur simple substance in regenerator 4 forms sulfur foam under the air effect that aerator 9 blasts, and drains into sulfur foam groove 5 from the top of regenerator 4, becomes sulfur and discharge after entering centrifuge 6 dehydration, and the moisture that sulfur foam removes in centrifuge 6 enters lean liquid bath 7.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.

Claims (7)

1. an anti-sulfur based on wet oxidation reduction and desulfurization process blocks up system, including separator, absorption tower, flash tank, regenerator, circulating pump, aerator, centrifuge, lean flow container and sulfur foam groove, the entrance of described separator and sulfur-containing gas pipeline communication, the outlet of separator is connected with the air inlet on absorption tower, the gas outlet on absorption tower is connected with the purification feed channel of peripheral hardware, the rich solution outlet on absorption tower is connected with the charging aperture of flash tank, the gas outlet of flash tank is connected with flashed vapour pipeline, and the discharging opening of flash tank is connected with the charging aperture of regenerator;The lean solution outlet of regenerator is connected with lean flow container through pipeline, and lean flow container is connected with the entrance of circulating pump, and circulation delivery side of pump is connected with the lean solution entrance on absorption tower by the first pipeline;The top of regenerator connects with the entrance of sulfur foam groove, and the outlet of sulfur foam groove connects with the charging aperture of centrifuge, and the discharging opening of centrifuge is connected with the storage sulfur equipment of peripheral hardware, and the liquid outlet of centrifuge is connected with lean flow container;It is characterized in that, described absorption tower offers cleaning mixture import, and described desulphurization system also includes second pipe, the entrance of second pipe and the first pipeline communication, the outlet of second pipe and the cleaning mixture inlet communication on absorption tower.
A kind of anti-sulfur based on wet oxidation reduction and desulfurization process blocks up system, it is characterized in that, flushing liquor import is offered on described regenerator, described desulphurization system also includes the 3rd pipeline, the entrance of the 3rd pipeline and the first pipeline communication, the outlet of the 3rd pipeline and the flushing liquor inlet communication of regenerator.
A kind of anti-sulfur based on wet oxidation reduction and desulfurization process blocks up system, it is characterised in that the bottom on described absorption tower is provided with the first conical head.
A kind of anti-sulfur based on wet oxidation reduction and desulfurization process blocks up system, it is characterised in that the cleaning mixture import on described absorption tower is opened in the top of the first conical head;The rich solution outlet on described absorption tower is opened in the bottom of the first conical head.
A kind of anti-sulfur based on wet oxidation reduction and desulfurization process blocks up system, it is characterised in that the bottom of described regenerator is provided with the second conical head.
A kind of anti-sulfur based on wet oxidation reduction and desulfurization process blocks up system, it is characterized in that, the flushing liquor import of described regenerator is opened in the top of the second conical head, and the lean solution outlet of described regenerator is opened in the bottom of the second conical head.
A kind of anti-sulfur based on wet oxidation reduction and desulfurization process blocks up system, it is characterised in that be installed on elevator pump on the pipeline that regenerator connects with lean flow container, and elevator pump is connected with the top of regenerator by pipeline.
CN201610392221.7A 2016-06-03 2016-06-03 A kind of stifled system of the anti-sulphur based on wet oxidation reduction and desulfurization process CN105879606B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106669402A (en) * 2016-11-23 2017-05-17 四川沃兹凯兰科技有限公司 Gas field sulfur-containing waste gas treatment method
CN107446642A (en) * 2017-09-05 2017-12-08 四川沃兹凯兰科技有限公司 A kind of efficient natural desulfurization system and its sulfur removal technology
CN108686488A (en) * 2017-04-12 2018-10-23 北京华石联合能源科技发展有限公司 A kind of suspension bed wet desulphurization and regeneration integral system
CN108686474A (en) * 2017-04-12 2018-10-23 北京华石联合能源科技发展有限公司 A kind of high-efficiency desulfurization and regeneration integral system using suspension bed
CN110484308A (en) * 2019-08-27 2019-11-22 北京北科环境工程有限公司 A kind of blast furnace gas BKRP desulphurization system

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EP2760783A1 (en) * 2011-09-27 2014-08-06 Thermochem Recovery International, Inc. System and method for syngas clean-up
CN104043326A (en) * 2014-06-04 2014-09-17 北京化工大学 Apparatus for high gravity removal of hydrogen sulfide of novel industrial gas, and technology thereof

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Publication number Priority date Publication date Assignee Title
JPH04300627A (en) * 1991-03-29 1992-10-23 Mitsubishi Materials Corp Method for preventing clogging of flue
EP2760783A1 (en) * 2011-09-27 2014-08-06 Thermochem Recovery International, Inc. System and method for syngas clean-up
CN203090756U (en) * 2013-01-31 2013-07-31 江苏金润环境科技有限公司 Desulphurization device for hydrogen sulfide-containing gas
CN104043326A (en) * 2014-06-04 2014-09-17 北京化工大学 Apparatus for high gravity removal of hydrogen sulfide of novel industrial gas, and technology thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106669402A (en) * 2016-11-23 2017-05-17 四川沃兹凯兰科技有限公司 Gas field sulfur-containing waste gas treatment method
CN108686488A (en) * 2017-04-12 2018-10-23 北京华石联合能源科技发展有限公司 A kind of suspension bed wet desulphurization and regeneration integral system
CN108686474A (en) * 2017-04-12 2018-10-23 北京华石联合能源科技发展有限公司 A kind of high-efficiency desulfurization and regeneration integral system using suspension bed
CN108686474B (en) * 2017-04-12 2021-01-29 北京华石联合能源科技发展有限公司 Efficient desulfurization and regeneration integrated system using suspension bed
CN107446642A (en) * 2017-09-05 2017-12-08 四川沃兹凯兰科技有限公司 A kind of efficient natural desulfurization system and its sulfur removal technology
CN110484308A (en) * 2019-08-27 2019-11-22 北京北科环境工程有限公司 A kind of blast furnace gas BKRP desulphurization system

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