CN102451604A - Secondary Claus and SCOT tail gas treatment process - Google Patents
Secondary Claus and SCOT tail gas treatment process Download PDFInfo
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- CN102451604A CN102451604A CN2010105195046A CN201010519504A CN102451604A CN 102451604 A CN102451604 A CN 102451604A CN 2010105195046 A CN2010105195046 A CN 2010105195046A CN 201010519504 A CN201010519504 A CN 201010519504A CN 102451604 A CN102451604 A CN 102451604A
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Abstract
The invention discloses a secondary Claus and SCOT tail gas treatment process. The secondary Claus and SCOT tail gas treatment process comprises a reduction treatment flow and an absorption treatment flow, wherein the reduction treatment flow reduces all sulfur containing compounds and elemental sulfur in tail gas into hydrogen sulfide; the absorption treatment flow firstly performs condensation to remove water in process gas, then removes hydrogen sulfide in the process gas, and finally delivers the regenerated acid gas to a Claus device. The invention has a simple flow, a high sulphur recovery rate, a high treatment efficiency, a high treatment capacity, and reduced treatment cost.
Description
Technical field
The present invention relates to a kind of secondary Crouse and add the SCOT tail gas treatment process.
Background technology
Claus system sulphur technology has become sulfur-bearing (H2S) acid gas treatment process the most ripe in the world today through the development in surplus 100 years.Owing to receive the restriction of chemical reaction equilibrium, three grades of Claus sulphur yields are the highest to have only 97%.For this reason, carried out extensive studies in recent decades both at home and abroad, developed some tail gas treatment process, with further raising sulphur yield.Along with progress of science and technology; Technological design, machine-building and automatic control level improve constantly; Sulphur recovery and exhaust gas processing device to maximization, automation, integrated direction development, all reach more than the 1000t/d like single cover abilities of national many devices such as Canada at present.This trend helps practicing thrift investment on the whole, reduces consumption, helps to reduce factory's fault rate, improves the overall operation performance and the security reliability of device.
Building up China's first cover disposal ability from nineteen sixty-five at Dong Xi is 15 * 104m
3/ d days hydramine method desulfurizer, natural gas purification are through 40 years of development, and be with considerable scale so far.With the Claus method is that basic sulfur recovery facility is the main processing mode of acid gas behind the processing selexol process, and natural gas via purifies back conveying up to standard, and the acid gas of deviating from gets into sulfur recovery facility, with the H in the acid gas
2S is for further processing to tail gas after being converted into sulphur recovery again, and the waste gas after the processing enters atmosphere through calcination.Recovery technology of sulfur has conventional claus process, SCOT tail gas treatment process, MCRC technology, Superclaus technology, Clinsulf-SDP technology etc. at present, has formed comparatively perfect recovery technology of sulfur system.
Chongqing Gas Purification Factory Dianjiang subsidiary factory sulfur recovery facility is established in 1973, and the former direct current method Claus technology that is designed to changed shunting in 1986 into.Calendar year 2001 is introduced the Linde company technique, a newly-built cover sulfur recovery facility.This device design sulfur yield is 99.2%, and daily output sulphur 16t was constructed and put into operation in November, 2002, is that the sulfur recovery facility that adopts the inferior dew point technology of isothermal overlaps in second cover, China first in the world at present.In November, 2002, device was through examination, acceptance(check).The Clinsulf-SDP sulfur recovery facility is made up of thermal transition section and catalytic conversion stage two parts, and the thermal transition section partly adopts the Claus patented technology of AMOCO company improvement, and what catalytic conversion part adopted is the inferior dew point technology of Linde.Clinsulf-SDP carries out improved a kind of inferior dew point technology to conventional Crouse's sulphur recovery technology; Its basic thought is directly from the catalytic bed of reactor rather than the sulphur cooler in downstream, take Claus reaction heat away; Thereby can make the whole bed layer keep reaction temperature constant, help the carrying out of Claus reaction.
The sixties, China began the research of hydrogen sulfide in monoethanolamine process early stage in the organizing nation of system and the sulfone amine method processing natural gas; Tissue has been set up the amine subtraction unit that domestic first cover has Crouse's sulphur recovery; On this basis, nearly 10 cover sulfur recovery facilities have successively been built; The initial stage seventies has begun the recovery technology of sulfur technology is studied in succession, mainly comprises unit, catalyst, H
2S/SO
2Aspects such as in-line analyzer, technological process and operating condition.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of above-mentioned prior art, the secondary Crouse who provide that a kind of flow process is simple, sulfur recovery rate is high, treatment effeciency is high, treating capacity is big, reduces processing cost adds the SCOT tail gas treatment process.
The object of the invention is realized through following technical proposals: secondary Crouse adds the SCOT tail gas treatment process, comprises the reduction handling process and absorbs handling process.
Said reduction handling process: sulfur-containing compounds all in the tail gas and elementary sulfur are reduced to hydrogen sulfide.
Said absorption handling process may further comprise the steps:
(a) at first the water in the process gas is removed in condensation;
(b) hydrogen sulfide in the subtractive process gas then;
(c) acid gas after will regenerating is at last sent Cross unit back to.
In the said step (b), use the hydrogen sulfide in the amine removal process gas.
In the said step (b), with recycling after the rich amine liquid regeneration.
In sum, the invention has the beneficial effects as follows: flow process is simple, sulfur recovery rate is high, treatment effeciency is high, treating capacity is big, reduce processing cost.
The specific embodiment
Below in conjunction with embodiment, the present invention is done further detailed description, but embodiment of the present invention is not limited only to this.
Embodiment:
The secondary Crouse who the present invention relates to adds the SCOT tail gas treatment process, comprises the reduction handling process and absorbs handling process.
Said reduction handling process: sulfur-containing compounds all in the tail gas and elementary sulfur are reduced to hydrogen sulfide.
Said absorption handling process may further comprise the steps:
(a) at first the water in the process gas is removed in condensation;
(b) hydrogen sulfide in the subtractive process gas then;
(c) acid gas after will regenerating is at last sent Cross unit back to.
In the said step (b), use the hydrogen sulfide in the amine removal process gas.
In the said step (b), with recycling after the rich amine liquid regeneration.
The concrete steps of the tail gas treatment process that the present invention relates to are: the device exhaust processing section comprises reduction section and absorber portion; Reduction section is reduced to hydrogen sulfide with sulfur-containing compounds all in the tail gas and elementary sulfur; The water in the process gas is removed in the condensation of absorber portion elder generation; Optionally remove hydrogen sulfide wherein with amine again, and with recycling after the rich amine liquid regeneration, the acid gas after the regeneration is sent Cross unit back to.
After above-mentioned treatment process processing, sulfur recovery rate is about 94%, and tail gas total sulfur discharge index is lower than 300 * 10
-6(w), device total sulfur yield can reach more than 99.8%.Device design acid gas treating capacity is 10200m
3/ h, daily output sulphur 260t.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and every foundation technical spirit of the present invention, any simple modification, equivalent variations to above embodiment did all fall within protection scope of the present invention.
Claims (5)
1. secondary Crouse adds the SCOT tail gas treatment process, it is characterized in that, comprises the reduction handling process and absorbs handling process.
2. secondary Crouse according to claim 1 adds the SCOT tail gas treatment process, it is characterized in that, said reduction handling process: sulfur-containing compounds all in the tail gas and elementary sulfur are reduced to hydrogen sulfide.
3. secondary Crouse according to claim 1 adds the SCOT tail gas treatment process, it is characterized in that, said absorption handling process may further comprise the steps:
(a) at first the water in the process gas is removed in condensation;
(b) hydrogen sulfide in the subtractive process gas then;
(c) acid gas after will regenerating is at last sent Cross unit back to.
4. secondary Crouse according to claim 3 adds the SCOT tail gas treatment process, it is characterized in that, in the said step (b), uses the hydrogen sulfide in the amine removal process gas.
5. secondary Crouse according to claim 4 adds the SCOT tail gas treatment process, it is characterized in that, in the said step (b), with recycling after the rich amine liquid regeneration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105195046A CN102451604A (en) | 2010-10-18 | 2010-10-18 | Secondary Claus and SCOT tail gas treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105195046A CN102451604A (en) | 2010-10-18 | 2010-10-18 | Secondary Claus and SCOT tail gas treatment process |
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| Publication Number | Publication Date |
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| CN102451604A true CN102451604A (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105195046A Pending CN102451604A (en) | 2010-10-18 | 2010-10-18 | Secondary Claus and SCOT tail gas treatment process |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104519978A (en) * | 2012-07-03 | 2015-04-15 | 国际壳牌研究有限公司 | Process for deep contaminant removal of gas streams |
| CN105008020A (en) * | 2012-12-10 | 2015-10-28 | 道达尔公司 | Integrated process to recover high quality native CO2 from a sour gas comprising H2S and CO2 |
| US10016721B1 (en) | 2017-05-25 | 2018-07-10 | Jiangnan Environmental Protection Group Inc. | Ammonia-based desufurization process and apparatus |
| US10092877B1 (en) | 2017-05-25 | 2018-10-09 | Jiangnan Environmental Protection Group Inc. | Dust removal and desulfurization of FCC exhaust gas |
| US10099170B1 (en) | 2017-06-14 | 2018-10-16 | Jiangnan Environmental Protection Group Inc. | Ammonia-adding system for ammonia-based desulfurization device |
| US10112145B1 (en) | 2017-09-07 | 2018-10-30 | Jiangnan Environmental Protection Group Inc. | Method for controlling aerosol production during absorption in ammonia desulfurization |
| CN109071226A (en) * | 2016-03-23 | 2018-12-21 | 埃克森美孚研究工程公司 | The Claus unit processing of parking tail gas |
| US20190001267A1 (en) | 2017-07-03 | 2019-01-03 | Jiangnan Environmental Protection Group Inc. | Desulfurization absorption tower |
| US10207220B2 (en) | 2017-03-15 | 2019-02-19 | Jiangnan Environmental Protection Group Inc. | Method and apparatus for removing sulfur oxides from gas |
| US10953365B2 (en) | 2018-07-20 | 2021-03-23 | Jiangnan Environmental Protection Group Inc. | Acid gas treatment |
| US11027234B2 (en) | 2018-04-13 | 2021-06-08 | Jiangnan Environmental Protection Group Inc. | Oxidization of ammonia desulfurization solution |
| US11224838B2 (en) | 2019-12-26 | 2022-01-18 | Jiangnan Environmental Protection Group Inc. | Controlling aerosol production during absorption in ammonia-based desulfurization |
-
2010
- 2010-10-18 CN CN2010105195046A patent/CN102451604A/en active Pending
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104519978A (en) * | 2012-07-03 | 2015-04-15 | 国际壳牌研究有限公司 | Process for deep contaminant removal of gas streams |
| CN105008020A (en) * | 2012-12-10 | 2015-10-28 | 道达尔公司 | Integrated process to recover high quality native CO2 from a sour gas comprising H2S and CO2 |
| CN109071226A (en) * | 2016-03-23 | 2018-12-21 | 埃克森美孚研究工程公司 | The Claus unit processing of parking tail gas |
| US10406477B2 (en) | 2017-03-15 | 2019-09-10 | Jiangnan Environmental Protection Group Inc. | Method and apparatus for removing sulfur oxides from gas |
| US10207220B2 (en) | 2017-03-15 | 2019-02-19 | Jiangnan Environmental Protection Group Inc. | Method and apparatus for removing sulfur oxides from gas |
| US10675584B2 (en) | 2017-03-15 | 2020-06-09 | Jiangnan Environmental Protection Group Inc. | Method and apparatus for removing sulfur oxides from gas |
| US10413864B2 (en) | 2017-03-15 | 2019-09-17 | Jiangnan Environmental Protection Group Inc. | Method and apparatus for removing sulfur oxides from gas |
| US10406478B2 (en) | 2017-05-25 | 2019-09-10 | Jiangnan Environmental Protection Group Inc. | Ammonia-based desulfurization process and apparatus |
| US10016721B1 (en) | 2017-05-25 | 2018-07-10 | Jiangnan Environmental Protection Group Inc. | Ammonia-based desufurization process and apparatus |
| US10213739B2 (en) | 2017-05-25 | 2019-02-26 | Jiangnan Environmental Protection Group Inc. | Dust removal and desulfurization of FCC exhaust gas |
| US10343110B2 (en) | 2017-05-25 | 2019-07-09 | Jiangnan Environmental Protection Group Inc. | Dust removal and desulfurization of FCC exhaust gas |
| US10399033B2 (en) | 2017-05-25 | 2019-09-03 | Jiangnan Environmental Protection Group Inc. | Ammonia-based desulfurization process and apparatus |
| US10471383B2 (en) | 2017-05-25 | 2019-11-12 | Jiangnan Environmental Protection Group Inc. | Dust removal and desulfurization of FCC exhaust gas |
| US10092877B1 (en) | 2017-05-25 | 2018-10-09 | Jiangnan Environmental Protection Group Inc. | Dust removal and desulfurization of FCC exhaust gas |
| US10413865B2 (en) | 2017-05-25 | 2019-09-17 | Jiangnan Enviromental Protection Group Inc. | Ammonia-based desulfurization process and apparatus |
| US10561982B2 (en) | 2017-05-25 | 2020-02-18 | Jiangnan Environmental Protection Group Inc. | Ammonia-based desulfurization process and apparatus |
| US10159929B1 (en) | 2017-06-14 | 2018-12-25 | Jiangnan Environmental Protection Group Inc. | Ammonia-adding system for ammonia-based desulfurization device |
| US10589212B2 (en) | 2017-06-14 | 2020-03-17 | Jiangnan Environmental Protection Group Inc. | Ammonia-adding system for ammonia-based desulfurization device |
| US10583386B2 (en) | 2017-06-14 | 2020-03-10 | Jiangnan Environmental Protection Group Inc. | Ammonia-adding system for ammonia-based desulfurization device |
| US10099170B1 (en) | 2017-06-14 | 2018-10-16 | Jiangnan Environmental Protection Group Inc. | Ammonia-adding system for ammonia-based desulfurization device |
| US20190001267A1 (en) | 2017-07-03 | 2019-01-03 | Jiangnan Environmental Protection Group Inc. | Desulfurization absorption tower |
| US10427097B2 (en) | 2017-07-03 | 2019-10-01 | Jiangnan Environmental Protection Group Inc. | Desulfurization absorption tower |
| US10556205B2 (en) | 2017-07-03 | 2020-02-11 | Jiangnan Environmental Protection Group Inc. | Desulfurization absorption tower |
| US10561984B2 (en) | 2017-07-03 | 2020-02-18 | Jiangnan Environmental Protection Group Inc. | Desulfurization absorption tower |
| US10421040B2 (en) | 2017-07-03 | 2019-09-24 | Jiangnan Environmental Protection Group Inc. | Desulfurization absorption tower |
| US10618001B2 (en) | 2017-07-03 | 2020-04-14 | Jiangnan Environmental Protection Group Inc. | Desulfurization absorption tower |
| US10449488B2 (en) | 2017-09-07 | 2019-10-22 | Jiangnan Environmental Protection Group Inc. | Method for controlling aerosol production during absorption in ammonia desulfurization |
| US10369517B2 (en) | 2017-09-07 | 2019-08-06 | Jiangnan Environmental Protection Group Inc. | Method for controlling aerosol production during absorption in ammonia desulfurization |
| US10357741B2 (en) | 2017-09-07 | 2019-07-23 | Jiangnan Environmental Protection Group Inc. | Method for controlling aerosol production during absorption in ammonia desulfurization |
| US10112145B1 (en) | 2017-09-07 | 2018-10-30 | Jiangnan Environmental Protection Group Inc. | Method for controlling aerosol production during absorption in ammonia desulfurization |
| US11027234B2 (en) | 2018-04-13 | 2021-06-08 | Jiangnan Environmental Protection Group Inc. | Oxidization of ammonia desulfurization solution |
| US10953365B2 (en) | 2018-07-20 | 2021-03-23 | Jiangnan Environmental Protection Group Inc. | Acid gas treatment |
| US11224838B2 (en) | 2019-12-26 | 2022-01-18 | Jiangnan Environmental Protection Group Inc. | Controlling aerosol production during absorption in ammonia-based desulfurization |
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Application publication date: 20120516 |