CN108479359A - A kind of tail gas of sulphur purifier and technique - Google Patents

A kind of tail gas of sulphur purifier and technique Download PDF

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Publication number
CN108479359A
CN108479359A CN201810547338.7A CN201810547338A CN108479359A CN 108479359 A CN108479359 A CN 108479359A CN 201810547338 A CN201810547338 A CN 201810547338A CN 108479359 A CN108479359 A CN 108479359A
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China
Prior art keywords
tower
gas
tail gas
sulphur
chilling
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CN201810547338.7A
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Chinese (zh)
Inventor
高扬
赵芳
李红霞
李铁军
高炬
范西四
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Shandong Sunway Petrochemical Engineering Co Ltd
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Shandong Sunway Petrochemical Engineering Co Ltd
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Priority to CN201810547338.7A priority Critical patent/CN108479359A/en
Publication of CN108479359A publication Critical patent/CN108479359A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/002—Separation 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 by condensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/0253—Preparation of sulfur; Purification from non-gaseous sulfur compounds other than sulfides or materials containing such sulfides
    • C01B17/0259—Preparation of sulfur; Purification from non-gaseous sulfur compounds other than sulfides or materials containing such sulfides by reduction of sulfates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/006—Layout of treatment plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10—Inorganic absorbents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/14—Gaseous waste or fumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/20—Sulfur; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/40—Sorption with wet devices, e.g. scrubbers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)

Abstract

The present invention relates to a kind of tail gas of sulphur purifier and techniques, belong to sulfur-containing tail gas processing technology field.The device includes chilling tower, absorption tower, regenerator, cooler and circulating pump.The sour gas containing ammonia that acidic water stripping device is generated is used for CLAUS tail gas of sulphur processing procedures, and treated, and byproduct returns to sulphur process processed.Material of the present invention is safe, technological process is short, it is low to absorb temperature, can avoid the escaping of ammonia occurs, discharge gas SO250mg/Nm can be reduced to3Hereinafter, simultaneously using the sour gas containing ammonia of oil plant acidic water stripping device as the ammonia source of absorption process, and absorbing liquid is back to sulphur process processed, realize the comprehensive utilization of material.

Description

A kind of tail gas of sulphur purifier and technique
Technical field
The present invention relates to a kind of tail gas of sulphur purifier and techniques, belong to sulfur-containing tail gas processing technology field.
Background technology
Prevention and control of air pollution is always the key areas of efforts at environmental protection, and China advocates always energy-saving and emission-reduction, and stringent control is big Gas sulfur dioxide (SO2) emissions total amount newly issues atmosphere pollutants emission standards GB/T31570-2015 in 2015《Petroleum refining industry is dirty Contaminate object discharge standard》By SO2Emission limit is reduced to 400mg/Nm3(especially area 100mg/Nm3).Traditional sulfur recovery technology Technology cannot be satisfied requirement, and qualified discharge after deep purifying processing need to be carried out to existing CLAUS tail gas of sulphur.
Domestic CLAUS tail gas of sulphur processing method mainly has low temperature Claus process, choice oxidation process, Reducing and absorption at present Method and oxidative absorption method, wherein low temperature Claus process, choice oxidation process, reducing absorping method technological process are long, equipment safety control It is required that it is high, and vent gas treatment effect can not meet further increasing for environmental requirement.Oxidative absorption method is by the Containing Sulfur in tail gas It closes object and is all oxidized to SO2, then by chemical absorbing, with reaction speed is fast, tail gas clean-up is efficient, simple system, sets Standby advantage small, low energy consumption.
Invention content
In view of the foregoing defects the prior art has, the present invention proposes a kind of tail gas of sulphur purifier and technique, will The sour gas containing ammonia that acidic water stripping device generates is used for CLAUS tail gas of sulphur processing procedures, and treated, and byproduct returns to system Sulphur process realizes material comprehensive utilization, to reduce equipment investment, shortens technological process, lowers energy consumption, save and take up an area, improves object Expect safety, and ensures to purify SO during heel row is deflated2Content is less than 50mg/Nm3。
The present invention is realized using technical solution below：
A kind of tail gas of sulphur purifier, including sequentially connected tail-gas combustion stove, chilling tower, absorption tower, regenerator and Acidic water stripping device, the tail-gas combustion stove are connect with the import of chilling tower bottom, the outlet of the tower overhead gas of chilling top of tower with The import of absorb the bottom of the tower connects, the rich solution outlet of absorb the bottom of the tower respectively at the top of regenerator import and burner for producing sulfur connect It connects, the lean solution outlet for regenerating tower bottom is connect with the import at the top of absorption tower, and the tower overhead gas outlet at the top of regenerator is fired with sulphur processed Stove connection is burnt, acidic water stripping device is connect with the import of regeneration tower bottom.
Further, liquid collecting packet is equipped between the tail-gas combustion stove and the import of chilling tower bottom, it is extra for removing Moisture ensures the water balance in chilling tower.
Further, import of the chilling water out of the chilling tower bottom through circulating pump and cooler and chilling top of tower Connection, realizes recycling for chilled water (chw).
Further, the tower overhead gas outlet at the top of the absorption tower and atmosphere.
Further, the lean solution outlet of the regeneration tower bottom is connect through lean pump with the import at the top of absorption tower.
Further, the rich solution outlet of the absorb the bottom of the tower after rich solution pump respectively at the top of regenerator import and system Sulphur burner connects.
A kind of tail gas of sulphur purification technique based on above-mentioned apparatus, includes the following steps：
(1) the CLAUS tail gas of sulphur after incineration oxidation enters chilling tower, and room temperature, chilling are down to after chilling water spray Tail gas afterwards enters absorption tower；
(2) tail gas in absorption tower after chilling is contacted with ammonium sulfite-ammonium bisulfite absorbing liquid, the SO in tail gas2Quilt Absorbing liquid absorbs, and removes SO2Purified gas afterwards is discharged directly to the atmosphere；
(3) SO is absorbed2An absorbing liquid part afterwards is sent to regenerator and is regenerated, and another part is sent as sulfur feedstock processed Toward CLAUS burner for producing sulfur；
(4) absorbing liquid for being sent to regenerator is contacted with the sour gas containing ammonia come from sewage stripping, in sour gas containing ammonia Ammonia enter liquid phase, restore absorbing liquid to SO2Absorptivity, realize the regeneration of absorbing liquid；
(5) absorbing liquid after regenerating is sent to absorption tower by regenerator and recycles, the acidity of the removing ammonia after regenerative response Gas is then sent to CLAUS burner for producing sulfur.
Further, liquid collecting packet is set in the step (1) before chilling tower, for removing extra moisture, ensures chilling Water balance in tower.
Further, CLAUS tail gas of sulphur incineration oxidation processes in the step (1) need to use oxygen-excess combustion, to ensure Sulfide in tail gas is completely reformed into SO2。
Further, absorbing liquid is drenched by absorbing tower top spray into tower in the step (2), and the tail gas after chilling is by absorption tower Bottom of tower enters, liquid phase counter current contacting.
Further, in the step (4), the absorbing liquid for being sent to regenerator is sprayed by tower top into tower, from acid steam It carries the sour gas containing ammonia come by regenerator bottom of tower to be entered, liquid phase counter current contacting.
Further, in the step (4), when ammonia content deficiency in sour gas containing ammonia, using it is outer for ammonia source to absorb Liquid is regenerated.
Further, the operation temperature on the absorption tower is 20~60 DEG C.
Further, the operation temperature of the regenerator is 20~60 DEG C.
The absorbing liquid is the mixed solution of ammonium sulfite-ammonium bisulfite, according to constituent content difference, to SO2With NH3With different absorbabilities, reaction equation is：
Compared with prior art, the beneficial effects of the invention are as follows：
(1) sour gas containing ammonia for for the first time generating sewage stripping is regenerated for ammonium sulfite-bisulfite ammonium salt solution, and This technique is used for CLAUS tail gas of sulphur processing procedures；It can guarantee SO in discharge gas2Content is reduced to 50mg/Nm3Hereinafter, meeting Increasingly harsh atmosphere pollutants emission standards.
(2) the preposition liquid collecting packet of chilling tower solves the problems, such as absorption-regenerative process water balance, it is ensured that absorption process is relatively low At a temperature of carry out, improve absorption efficiency, while avoid high temperature absorption band come the escaping of ammonia problem.
(3) it is not necessarily to cumbersome uncontrollable hydrogenation process, ammonia source used is sour gas containing ammonia, is also sulfur feedstock processed originally, Do not increase material consumption additionally；Technical process is safe and reliable, and material is safe, investment reduction, saves and takes up an area.
(4) by-product ammonium sulfite-bisulfite ammonium salt solution is sent to sulphur process processed, and entire technique only has excessive water needs Discharge, environmental friendliness are high.
(5) sour gas of removing ammonia is sent to burner for producing sulfur after regeneration of absorption solution reaction, and without burning ammonia, common fire can be used Mouth reduces equipment cost.
Description of the drawings
Fig. 1 is tail gas of sulphur purifier structural schematic diagram；
Fig. 2 is absorbent pH to SO2The influence of absorptivity；
Fig. 3 is liquid-gas ratio to SO2The influence of absorptivity；
Fig. 4 is SO2Input concentration is to SO2The influence of absorptivity；
Fig. 5 is absorbent temperature to SO2The influence of absorptivity；
Fig. 6 is concentration of absorbing to SO2The influence of absorptivity；
Fig. 7 is filler to SO2The influence of absorptivity.
Wherein, above-mentioned attached drawing includes the following drawings label：1, liquid collecting packet；2, chilling tower；3, cooler；4, circulating pump；5、 Absorption tower；6, rich solution pump；7, regenerator；8, lean pump.
Specific implementation mode
In order to make the object of the invention, technical solution be more clearly understood, below by embodiment, the present invention is made further It is described in detail.
Embodiment one：
As shown in Figure 1, a kind of tail gas of sulphur purifier, including sequentially connected tail-gas combustion stove, chilling tower 2, absorption Tower 5, regenerator 7 and acidic water stripping device, the tail-gas combustion stove are connect with the import of 2 bottom of chilling tower, tail-gas combustion stove It is equipped with liquid collecting packet 1 between import with 2 bottom of chilling tower, for removing extra moisture, ensures the water balance in chilling tower 2.It is anxious The chilling water out of 2 bottom of cold tower is connect through circulating pump 4 and cooler 3 with the import at 2 top of chilling tower, realizes following for chilled water (chw) Ring utilizes.
The tower overhead gas outlet at 2 top of chilling tower is connect with the import of 5 bottom of absorption tower, the lean solution outlet of 7 bottom of regenerator It is connect with the import at 5 top of absorption tower through lean pump 8, the tower overhead gas outlet at 5 top of absorption tower and atmosphere.
The rich solution outlet of 5 bottom of absorption tower connects with the import at 7 top of regenerator and burner for producing sulfur respectively after rich solution pump 6 It connects, the tower overhead gas outlet at 7 top of regenerator is connect with burner for producing sulfur, the import of acidic water stripping device and 7 bottom of regenerator Connection.
A kind of tail gas of sulphur purification technique, includes the following steps：
(1) the CLAUS tail gas of sulphur after incineration oxidation enters chilling tower 2, and room temperature is down to after chilling water spray, CLAUS tail gas of sulphur incineration oxidation processes need to use oxygen-excess combustion, SO is completely reformed into the sulfide ensured in tail gas2, anxious Liquid collecting packet 1 is set before cold tower 2, for removing extra moisture, ensures the water balance in chilling tower 2.Chilling water circulation use, it is anxious Tail gas after cold enters absorption tower 5.
(2) tail gas in absorption tower 5 after chilling is contacted with ammonium sulfite-ammonium bisulfite absorbing liquid, and absorbing liquid is by absorbing 5 tower top of tower is sprayed into tower, and the tail gas after chilling is entered by 5 bottom of tower of absorption tower, liquid phase counter current contacting, the SO in tail gas2It is inhaled It receives liquid to absorb, removes SO2Purified gas afterwards is discharged directly to the atmosphere；The operation temperature on the absorption tower 5 is 20~60 DEG C.
(3) SO is absorbed2An absorbing liquid part afterwards is sent to regenerator 7 and is regenerated, and another part is sent to CLAUS sulphur Combustion furnace, as sulfur feedstock processed.
(4) absorbing liquid for being sent to regenerator 7 sprays the sour gas containing ammonia into tower, come from sewage stripping by again by tower top 7 bottom of tower of raw tower enters, liquid phase counter current contacting, and the ammonia in sour gas containing ammonia enters liquid phase, is reacted with ammonium bisulfite, improves molten Liquid pH restores absorbing liquid to SO2Absorptivity, realize the regeneration of absorbing liquid；When ammonia content deficiency in sour gas containing ammonia, use It is outer that absorbing liquid is regenerated for ammonia source；The operation temperature of the regenerator 7 is 20~60 DEG C.
(5) absorbing liquid after regenerating is sent to absorption tower 5 by regenerator 7 and recycles, and the acidity of ammonia is removed after regenerative response Gas is then sent to burner for producing sulfur.
Exhaust gas volumn is 8Nm in experimental provision3/ h, SO2Input concentration is 2000~25000ppm, and liquid-gas ratio is 2~12L/ m3, absorbent temperature is 20~60 DEG C, and absorbent pH is 4~8.5.Using experiment of single factor, level-one spray-absorption obtains result It is as follows：
Fig. 2 is absorbent pH to SO2The influence of absorptivity；Wherein, SO2Input concentration is 5000ppm, exhaust gas volumn 8Nm3/ H, liquid-gas ratio 8L/m3, absorbent temperature is 40 DEG C.
Fig. 3 is liquid-gas ratio to SO2The influence of absorptivity；Wherein, SO2Input concentration is 5000ppm, exhaust gas volumn 8Nm3/ h, Absorbent pH is 6.7, and absorbent temperature is 40 DEG C.
Fig. 4 is SO2Input concentration is to SO2The influence of absorptivity；Wherein, exhaust gas volumn 8.5Nm3/ h, absorbent pH are 6.7 (concentration about 0.6mol/L), absorbent temperature are 40 DEG C, liquid-gas ratio 11.7L/m3。
Fig. 5 is absorbent temperature to SO2The influence of absorptivity；Wherein, SO2Input concentration is 5000ppm, and exhaust gas volumn is 9.5Nm3/ h, absorbent pH are 6.8, liquid-gas ratio 10L/m3。
Fig. 6 is concentration of absorbing to SO2The influence of absorptivity；Wherein, SO2Input concentration is 5000ppm, and exhaust gas volumn is 8.5Nm3/ h, absorbent pH are 6.7, and absorbent temperature is 60 DEG C, liquid-gas ratio 10L/m3。
Fig. 7 is filler to SO2The influence of absorptivity；Wherein, SO2Input concentration is 10000ppm, exhaust gas volumn 8Nm3/ h, Absorbent temperature is 40 DEG C, liquid-gas ratio 8L/m3。
The foregoing is merely presently preferred embodiments of the present invention and oneself, not with the present invention for limitation, it is all the present invention essence Impartial modifications, equivalent substitutions and improvements etc., should be included in the patent covering scope of the present invention made by within refreshing and principle.

Claims (10)

1. a kind of tail gas of sulphur purifier, which is characterized in that including sequentially connected tail-gas combustion stove, chilling tower (2), absorb Tower (5), regenerator (7) and acidic water stripping device, the tail-gas combustion stove are connect with the import of chilling tower (2) bottom, chilling Tower overhead gas outlet at the top of tower (2) is connect with the import of absorption tower (5) bottom, the rich solution outlet of absorption tower (5) bottom respectively with Import at the top of regenerator (7) is connected with burner for producing sulfur, at the top of the lean solution outlet of regenerator (7) bottom and absorption tower (5) Import connects, and the tower overhead gas outlet at the top of regenerator (7) is connect with burner for producing sulfur, acidic water stripping device and regenerator (7) The import of bottom connects.
2. tail gas of sulphur purifier according to claim 1, which is characterized in that the tail-gas combustion stove and chilling tower (2) it is equipped with liquid collecting packet (1) between the import of bottom, for removing extra moisture, ensures the water balance in chilling tower (2).
3. tail gas of sulphur purifier according to claim 1, which is characterized in that the chilling of chilling tower (2) bottom Water out is connect through circulating pump (4) and cooler (3) with the import at the top of chilling tower (2), realizes recycling for chilled water (chw).
4. tail gas of sulphur purifier according to claim 1, which is characterized in that the tower top at the top of the absorption tower (5) Gas exports and atmosphere.
5. a kind of tail gas of sulphur purification technique based on tail gas of sulphur purifier described in claim 1-4 any one, special Sign is, includes the following steps：
(1) the CLAUS tail gas of sulphur after incineration oxidation enters chilling tower, is down to room temperature after chilling water spray, after chilling Tail gas enters absorption tower；
(2) tail gas in absorption tower after chilling is contacted with ammonium sulfite-ammonium bisulfite absorbing liquid, the SO in tail gas2Absorbed liquid It absorbs, removes SO2Purified gas afterwards is discharged directly to the atmosphere；
(3) SO is absorbed2An absorbing liquid part afterwards is sent to regenerator and is regenerated, and another part is sent to as sulfur feedstock processed CLAUS burner for producing sulfur；
(4) absorbing liquid for being sent to regenerator is contacted with the sour gas containing ammonia come from sewage stripping, the ammonia in sour gas containing ammonia Into liquid phase, restore absorbing liquid to SO2Absorptivity, realize the regeneration of absorbing liquid；
(5) absorbing liquid after regenerating is sent to absorption tower by regenerator and recycles, and the sour gas of the removing ammonia after regenerative response is then It is sent to CLAUS burner for producing sulfur.
6. tail gas of sulphur purification technique according to claim 5, which is characterized in that set before chilling tower in the step (1) Liquid collecting packet is set, for removing extra moisture, ensures the water balance in chilling tower.
7. tail gas of sulphur purification technique according to claim 5, which is characterized in that CLAUS sulphur tails in the step (1) Gas incineration oxidation process need to use oxygen-excess combustion, SO is completely reformed into the sulfide ensured in tail gas2。
8. tail gas of sulphur purification technique according to claim 5, which is characterized in that absorbing liquid is by inhaling in the step (2) It receives column overhead to spray into tower, the tail gas after chilling is entered by absorbing tower bottom, liquid phase counter current contacting.
9. tail gas of sulphur purification technique according to claim 5, which is characterized in that in the step (4), be sent to regeneration The absorbing liquid of tower sprays the sour gas containing ammonia into tower, come from sewage stripping by tower top and is entered by regenerator bottom of tower, and liquid phase is inverse Stream contact.
10. the tail gas of sulphur purification technique according to claim 5 or 9, which is characterized in that in the step (4), when containing ammonia In sour gas when ammonia content deficiency, absorbing liquid is regenerated for ammonia source using outer.
CN201810547338.7A 2018-05-31 2018-05-31 A kind of tail gas of sulphur purifier and technique Withdrawn CN108479359A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109595580A (en) * 2018-12-06 2019-04-09 北京热科能源技术研究有限公司 A kind of flue gas heat recovery system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109595580A (en) * 2018-12-06 2019-04-09 北京热科能源技术研究有限公司 A kind of flue gas heat recovery system
CN109595580B (en) * 2018-12-06 2020-04-17 北京热科能源技术研究有限公司 Flue gas heat recovery system

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Application publication date: 20180904