CN108176194A - A kind of processing unit and processing method containing sulphur simple substance and compound tail gas - Google Patents
A kind of processing unit and processing method containing sulphur simple substance and compound tail gas Download PDFInfo
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- CN108176194A CN108176194A CN201810039147.XA CN201810039147A CN108176194A CN 108176194 A CN108176194 A CN 108176194A CN 201810039147 A CN201810039147 A CN 201810039147A CN 108176194 A CN108176194 A CN 108176194A
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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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
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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
- B01D53/14—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 absorption
- B01D53/1425—Regeneration of liquid absorbents
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of processing units and processing method containing sulphur simple substance and compound tail gas, processing unit includes sequentially connected incinerator, waste heat boiler, emission flue gas heat-exchange unit, chilling tower, absorption tower, rich or poor absorbent heat exchanger and regenerator, and the hot lean solution outlet of the regeneration tower bottom is connect successively with rich or poor absorbent heat exchanger, lean solution cooler, solution surge tank, absorption tower, gas-liquid separator and emission flue gas heat-exchange unit.The present invention is burned using sulfur-containing tail gas and waste heat recovery, tail gas are cooled down and pre-washed, SO23 formants of absorption and regeneration composition exhaust treatment systems, completely by the sulphur simple substance in tail gas and compound oxidation into SO2, and pass through absorption and regeneration unit removing SO2So that the exhaust emissions after being handled by the system meets harsh environmental requirement, the SO containing high concentration after removing2Gas can return to claus sulphur recovery units and be converted to Sulfur, can also send to sulphuric acid plant and generate sulfuric acid.
Description
Technical field
The present invention relates to a kind of processing units and processing method containing sulphur simple substance and compound tail gas.
Background technology
All sulfur-bearing in most of crude oil, raw natural gas and coal mine, in petroleum refining, natural gas purification process and coal
It is required for removing the impurity composition of sulfur-bearing in chemical field.In gas (normally referred to as acid gas) after removing containing it is toxic very
Big H2S gases are very big to the existence and environmental hazard of the mankind；Therefore, acid gas could discharge after having to pass through processing.The whole world
The most widely used treatment process technology of recent decades is Crouse (Claus) Sulfur recovery process, by the H in acid gas2S is converted
It is recycled into elemental sulfur, while achievees the purpose that remove toxic gas in acid gas.
With the continuous development of society, the protective awareness for the natural environment that the mankind depend on to itself for existence is more and more stronger, phase
The pollutant emission standard answered is also increasingly stringenter, and China had all put into effect newly in recent years for gas industries, coal chemical technology
More stringent environmental protection standard.Such as domestic refinery new standard provides the refinery Sulfur recovery devices SO in general area2It discharges dense
It spends for less than 400mg/Nm3, environmentally sensitive area emission limit is 100mg/Nm3.Although domestic coal chemical industry does not temporarily put into effect row
Industry standard, but also perform national standard SO2Concentration of emission is less than 960mg/Nm3, environmentally sensitive area execution 100mg/Nm3.My god
Industry, which is currently prepared, at right gas purification formulates new environmental protection standard also by SO2Concentration of emission is tentatively scheduled on less than 500mg/Nm3。
Meet the requirement of increasingly strict environmental protection standard, conventional Claus and extension class Claus Sulfur recovery process
Technology (such as MCRC, CBA, CPS, Clinsulf, super Claus) all cannot meet the needs, only the technique of magnetic tape trailer gas disposal
Technology could meet environment protection emission requirement.
For the existing sulfur-containing tail gas treatment process technology in the current whole world, mainly have Reducing and absorption class technology,
Flue gas desulfurization technique, liquid phase oxidation law technology.
Reducing absorping method technology is mainly characterized by sulfur-containing tail gas through hydrotreating, by the various forms in tail gas
Sulfur-containing compound be converted into H2S carries out desulfurization, then the H by concentrate with alcohol amine solvent after cooling2S returns to the processing of upstream acid gas
Device recycles elementary sulfur, and most representative technique has the SCOT techniques of Dutch Shell Co. Ltd's exploitation.Such technique can relatively often
Rule or low-temperature Claus sulfur recovery technology further improve the Sulfur rate of recovery, but can not meet SO2Concentration of emission be less than
400mg/Nm3；Such technological process is long, if the reduction of tail gas hydrogenation section is not thorough, sulfur dioxide penetrates that easily cause upstream device tight
Heavy corrosion.
Flue gas desulfurization technique is mainly characterized by using alkaline solution, such as soda, calcium hydroxide, ammonia etc. by acid-base neutralization
SO in chemical reaction removing tail gas2Deng other acid sulphides, representative is Dual alkali, ammonia-fertilizer method.Such technique
Due to being chemical reaction, rate is fast, removal efficiency is high, SO2Concentration of emission is even smaller than 50mg/Nm3, disclosure satisfy that more tight
Severe environment protection emission index.Nevertheless, since such technique is acid-base neutralization reaction, final SO2Salts substances can be converted into
In the presence of, therefore such technique is in removing SO2While can generate the byproducts such as gypsum or even waste water can be generated and bring secondary pollution
The problem of object processing.
Liquid phase oxidation law technology is mainly characterized by sulfur-containing tail gas through hydrotreating, by containing for the various forms in tail gas
Convert sulfur compounds are H2S recycles proprietary complexing ferrous solution in the liquid phase by H2S is direct oxidation into elemental sulfur, final sulphur list
Matter output in the form of aqueous Sulfur filter cake.Primarily directed to containing H at the beginning of the process exploitation2The process gas desulfurization process of S, needle
To contain SO2Based on vent gas treatment, the technique need increase hydrogenating reduction processing.Sulfur-containing tail gas passes through after the process
Emission in almost without SO2, only H of the content no more than 10ppm2S.Although such technique can also meet more harsh
Environmental emission standard, but product Sulfur purity is not high, it is difficult to handle；Simultaneously device in normal course of operation easily by Sulfur
Particle blocks, and influences the smooth long term running of exhaust gas processing device.
Invention content
The shortcomings that in order to overcome the prior art, the present invention provides a kind of processing units containing sulphur simple substance and compound tail gas
And processing method, it is burned using sulfur-containing tail gas and waste heat recovery, tail gas is cooled down and pre-washed, SO23 formants of absorption and regeneration
Exhaust treatment system is formed, completely by the sulphur simple substance in tail gas and compound oxidation into SO2, and pass through absorption-regeneration unit and take off
Except SO2So that the exhaust emissions after being handled by the system meets harsh environmental requirement (by technological parameter special setting
Minimum SO2Concentration of emission may be less than 100mg/Nm3), the SO containing high concentration after removing2Gas can return to Crouse sulphur and return
Receiving apparatus is converted to Sulfur, can also send to sulphuric acid plant and generate sulfuric acid.
The technical solution adopted in the present invention is：A kind of processing unit containing sulphur simple substance and compound tail gas, including successively
The incinerator of connection, waste heat boiler, emission-flue gas heat-exchange unit, chilling tower, absorption tower, rich or poor absorbent heat exchanger and again
Raw tower, the hot lean solution outlet of the regeneration tower bottom successively with rich or poor absorbent heat exchanger, lean solution cooler, solution surge tank,
Absorption tower, gas-liquid separator are connected with emission-flue gas heat-exchange unit.
The present invention also provides a kind of processing methods containing sulphur simple substance and compound tail gas, include the following steps：
Step 1: it is 760~850 DEG C to enter incinerator to be converted into temperature by burning containing sulphur simple substance and compound tail gas
Containing SO2It is cooled to 300 DEG C in advance into waste heat boiler after tail gas, subsequently into emission-flue gas heat-exchange unit with coming from gas-liquid separation
Enter in chilling tower after 35~70 DEG C of the emission heat exchange cooling of device after being finally cooled to 30~65 DEG C and enter absorption tower；
Step 2: contain SO in absorption tower2Tail gas passes through lean solution absorbing and removing SO2Enter gas-liquid separator separates afterwards and fall folder
After being heated to 130 DEG C or more into emission-flue gas heat-exchange unit after the absorbent of band air is discharged into through exhaust emissions chimney；
Step 3: lean solution absorbs SO in absorption tower2After become rich solution from absorb the bottom of the tower into rich or poor absorbent exchange heat
Enter regenerator after device preheating and carry out solvent reclamation；
Enter Step 4: the hot lean solution after having regenerated enters from regeneration tower bottom after the precooling of rich or poor absorbent heat exchanger
Lean solution cooler is finally cooled down, and then enters in absorption tower the SO absorbed in tail gas through solution surge tank2, start next
The cycle that lean solution absorption-rich solution regeneration-lean solution absorbs.
Compared with prior art, the positive effect of the present invention is：
(1) present invention is to SO2Gas has higher reaction speed and preferable assimilation effect, can further reduce discharge
SO in tail gas2Concentration, pass through the minimum SO of technical arrangement plan2Concentration of emission may be less than 100mg/Nm3, meet more harsh
Environmental requirement.
(2) present invention absorbs SO using with superelevation selection2Lyosoption, can be grasped under higher gas liquid ratio
Make, effectively reduce the solution internal circulating load of device, reduce the size of capital equipment.
(3) present invention is except the SO of production high concentration2Outside gas, reluctant solid product is not generated, is had higher
Environment friendly and operability.
(4) present invention is using the sulfur-containing tail gas burning specially designed and waste heat recovery unit, and is integrated at entire tail gas
It manages in technological process, high temperature oxygen can melt H in all tail gas completely2S utmostly reduces absorption-regeneration unit SO2It absorbs
The degradation and loss of agent.
(5) emission-flue gas heat-exchange unit is provided in flow of the present invention, by the exhaust gas reheater of absorption tower top discharge extremely
130 DEG C or more, ensure that higher exhaust temperature causes the moisture content in emission not condense；Further it is lowered into chilling simultaneously
The gas temperature of tower reduces the operational load of chilling tower.
(6) setting absorbs tower top catchment gauze and the dual separation of external gas-liquid separator, maximum journey in flow of the present invention
Degree isolates the SO carried secretly in overhead gas2Absorbent reduces the loss of absorbent, reduces the operating cost of device.
Description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is the process flow chart of the present invention.
Specific embodiment
A kind of processing unit containing sulphur simple substance and compound tail gas, as shown in Figure 1, including：Sulfur-containing tail gas incinerator 1 gives up
Heat boiler 2, emission-flue gas heat-exchange unit 3, chilling tower 4, absorption tower 5, rich or poor absorbent heat exchanger 6, regenerator 7, hot lean solution
Circulating pump 8, lean solution cooler 9, solution surge tank 10, lean solution circulating pump 11, gas-liquid separator 12 and solution in-line purification system
13 etc., wherein：
The sulfur-containing tail gas incinerator 1 is connect by flange with waste heat boiler 2；The outlet of the waste heat boiler 2 passes through pipe
Line is connect with the tube-side inlet of emission-flue gas heat-exchange unit 3, and the tube side outlet of the emission-flue gas heat-exchange unit 3 passes through
Pipeline is connect with 4 lower inlet of chilling tower, and 4 top exit of chilling tower is connect by pipeline with 5 lower inlet of absorption tower, institute
The outlet at bottom for stating absorption tower 5 is connect by pipeline with the tube-side inlet of rich or poor absorbent heat exchanger 6, and the rich or poor absorbent changes
The tube side outlet of hot device 6 is connect by pipeline with 7 centre inlet of regenerator, and the hot lean solution outlet of 7 bottom of regenerator passes through
Pipeline is connect with the import of hot lean solution circulating pump 8, and the outlet of the hot lean solution circulating pump 8 is exchanged heat by pipeline and rich or poor absorbent
The shell side import connection of device 6, the shell-side outlet of the rich or poor absorbent heat exchanger 6 pass through pipeline and the import of lean solution cooler 9
Connection, the outlet of the lean solution cooler 9 are connect by pipeline with the upper inlet of solution surge tank 10, the solution surge tank
10 outlet at bottom is connect by pipeline with the import of lean solution circulating pump 11, the outlet of the lean solution circulating pump 11 by pipeline with
The top lean solution import connection on absorption tower 5, the top exit on the absorption tower 5 are connect by pipeline with gas-liquid separator 12, institute
The liquid-phase outlet for stating gas-liquid separator 12 accesses the upper inlet on absorption tower 5, the gas of the gas-liquid separator 12 by circulating pump
Mutually outlet is connect by pipeline with the shell side import of emission-flue gas heat-exchange unit 3, the emission-flue gas heat-exchange unit 3
Shell-side outlet is connected to exhaust emissions chimney by pipeline；The solution surge tank 10 passes through pipeline and solution in-line purification system 13
Connection.
The invention also discloses a kind of processing methods containing sulphur simple substance and compound tail gas, include the following steps：
Step 1: upstream sulfur-containing tail gas by pipeline 1. into sulfur-containing tail gas incinerator 1 be warming up to 760~850 DEG C it is laggard
Enter waste heat boiler 2, high-temperature gas is cooled to 300 DEG C in advance；
Step 2: the gas after the outlet of waste heat boiler 2 precooling enters back into 3 tube side of emission-flue gas heat-exchange unit, changing
In hot device with about 35~70 DEG C of the mutual heat exchange amount of emission from gas-liquid separator 12；
It carries out finally being cooled to 30~65 DEG C Step 3: the gas after cooling enters in chilling tower 4, enters absorb later
SO is carried out in tower 52The absorption of gas；
Step 4: the enrichment SO after absorbing2Lyosoption (i.e. rich solution) come out from 5 bottom of absorption tower, be introduced into poor
Regenerator 7, which is entered back into, after the preheating of rich absorbent heat exchanger 6 carries out solvent reclamation；
Step 5: the hot lean solution after having regenerated comes out from 7 bottom of regenerator, after being pressurized into hot lean solution circulating pump 8, into
Enter rich or poor absorbent heat exchanger 6 and carry out heat exchange with the rich solution come out from absorption tower 5；
Step 6: the lean solution after rich absorbent heat exchanger 6 tentatively precooling enter lean solution cooler 9 carry out it is final cold
But, later into solution surge tank 10；
Step 7: the lean solution in solution surge tank 10 is sent into absorption tower 5 after being pressurized by lean solution circulating pump 11 carries out tail gas
Middle SO2Absorption, so far complete the cycle that a lean solution absorption-rich solution regeneration-lean solution absorbs；
Step 8: by 5 lean solution absorbing and removing SO of absorption tower2Tail gas later enters gas-liquid separator 12 and carries out gas-liquid point
From separating and enter absorption tower 5 by circulating pump after the absorbent carried secretly in gas phase；
Step 9: the tail gas for going out gas-liquid separator 12 enters back into emission-flue gas heat-exchange unit 3, gone out from waste heat boiler 2
The high-temperature gas that mouth comes is heated to 130 DEG C or more, and exhaust emissions chimney is 3. emitted into finally by pipeline, is discharged into air；
Step 10: the height for going out 7 top of regenerator contains SO2Gas after supercooling, gas-liquid separation, gas phase passes through pipeline
2. can send to claus sulphur recovery units to generate Sulfur or send to sulphuric acid plant and produce sulfuric acid, liquid phase is again introduced by circulating pump
Regenerator 7.
The present invention operation principle be：Sulphur simple substance and non-SO will be contained2The compound of form carries out high temperature by incinerator 1 and burns
Oxidation conversion is burnt, H in gas can be made after oxidation2S contents are reduced to the level of below 5ppm, greatly reduce in follow-up process by
In H2The degrading solvent that S is brought with lyosoption generation irreversible reaction is lost, while ensure that solvent to SO2Moderately good
Absorbing and removing effect.
Waste heat be classified effectively using heat recovery boiler 2 and emission-flue gas heat-exchange unit 3 after high temperature incineration
Ground utilize, can byproduct steam for the present apparatus solvent reclamation process use and preheat emission simultaneously, prevent emission
The too low acid corrosion problem for leading to moisture content condensation problem therein, being effectively reduced emission pipeline and chimney of temperature.
SO is completely converted by way of high-temperature oxydation2Afterwards, it selects to absorb SO using superelevation2Lyosoption, carry out
SO2The selection of gas component absorbs, and due to the characteristic of lyosoption, almost only absorbs the SO in mixed gas2Component, thus it is molten
Agent regenerates SO in the gas come2Concentration may be up to more than 90%, have good utility value.In addition, according in sulfur-containing tail gas
SO2Concentration and exhaust emissions requirement it is different, absorption process can be in wider gas-liquid ratio ranges (1000~5000) and solution matter
It is operated under amount concentration (5~30wt%), enhances the operability of device.
After being handled by the exhaust gas processing device, SO in emission can be effectively reduced2Concentration, by adjusting
The parameters such as absorption tower inlet temperature of stabilizer, gas liquid ratio, solution concentration may be such that the emission SO after being handled by the present apparatus2Concentration
Less than 100mg/Nm3。
Claims (9)
1. a kind of processing unit containing sulphur simple substance and compound tail gas, it is characterised in that：Including sequentially connected incinerator, waste heat
Boiler, emission-flue gas heat-exchange unit, chilling tower, absorption tower, rich or poor absorbent heat exchanger and regenerator, the regenerator bottom
Portion hot lean solution outlet successively with rich or poor absorbent heat exchanger, lean solution cooler, solution surge tank, absorption tower, gas-liquid separator
It is connected with emission-flue gas heat-exchange unit.
2. a kind of processing unit containing sulphur simple substance and compound tail gas according to claim 1, it is characterised in that：It is described again
The hot lean solution outlet of raw tower bottom accesses rich or poor absorbent heat exchanger by hot lean solution circulating pump.
3. a kind of processing unit containing sulphur simple substance and compound tail gas according to claim 1, it is characterised in that：The gas
The liquid-phase outlet of liquid/gas separator accesses absorption tower by circulating pump.
4. a kind of processing unit containing sulphur simple substance and compound tail gas according to claim 1, it is characterised in that：It is described molten
The outlet at bottom of liquid surge tank accesses absorption tower by lean solution circulating pump.
5. a kind of processing unit containing sulphur simple substance and compound tail gas according to claim 1, it is characterised in that：It is described again
The top exit of raw tower is connect successively with cooler, gas-liquid separator.
6. a kind of processing unit containing sulphur simple substance and compound tail gas according to claim 5, it is characterised in that：It is described again
The gaseous phase outlet access claus sulphur recovery units or sulphuric acid plant, liquid phase of the gas-liquid separator of the top exit connection of raw tower go out
Mouth accesses regenerator by circulating pump.
7. a kind of processing method containing sulphur simple substance and compound tail gas, it is characterised in that：Include the following steps：
Step 1: enter incinerator containing sulphur simple substance and compound tail gas is converted into temperature as 760 ~ 850 DEG C containing SO by burning2
It is cooled to 300 DEG C in advance into waste heat boiler after tail gas, subsequently into emission-flue gas heat-exchange unit and 35 from gas-liquid separator
Enter in chilling tower after ~ 70 DEG C of emission heat exchange cooling after being finally cooled to 30 ~ 65 DEG C and enter absorption tower；
Step 2: contain SO in absorption tower2Tail gas passes through lean solution absorbing and removing SO2Fall entrainment into gas-liquid separator separates afterwards
After being heated to 130 DEG C or more into emission-flue gas heat-exchange unit after absorbent air is discharged into through exhaust emissions chimney；
Step 3: lean solution absorbs SO in absorption tower2After become rich solution from absorb the bottom of the tower into rich or poor absorbent heat exchanger preheat
Enter regenerator later and carry out solvent reclamation；
Step 4: the hot lean solution after having regenerated, which enters from regeneration tower bottom after the precooling of rich or poor absorbent heat exchanger, enters lean solution
Cooler is finally cooled down, and then enters in absorption tower the SO absorbed in tail gas through solution surge tank2, start next lean solution
The cycle that absorption-rich solution regeneration-lean solution absorbs.
8. a kind of processing method containing sulphur simple substance and compound tail gas according to claim 7, it is characterised in that：In gas-liquid
The absorbent being separated in separator enters absorption tower through circulating pump.
9. a kind of processing method containing sulphur simple substance and compound tail gas according to claim 7, it is characterised in that：Solvent is again
What life generated in the process contains SO2Gas at the top of the regenerator out after supercooling, gas-liquid separation, gas phase is sent to Crouse
Sulfur recovery unit, which generates Sulfur or send to sulphuric acid plant, produces sulfuric acid, and liquid phase is again introduced into regenerator by circulating pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810039147.XA CN108176194A (en) | 2018-01-16 | 2018-01-16 | A kind of processing unit and processing method containing sulphur simple substance and compound tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810039147.XA CN108176194A (en) | 2018-01-16 | 2018-01-16 | A kind of processing unit and processing method containing sulphur simple substance and compound tail gas |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351126A (en) * | 2018-11-16 | 2019-02-19 | 中石化炼化工程（集团）股份有限公司 | Sulphur-containing exhaust gas processing method |
| CN112728974A (en) * | 2021-01-04 | 2021-04-30 | 洛阳瑞昌环境工程有限公司 | Glass tube heat exchanger capable of preventing dust deposition and blocking and application thereof |
| CN113483348A (en) * | 2021-05-28 | 2021-10-08 | 光大绿色环保管理（深圳）有限公司 | Hazardous waste incineration flue gas treatment device and method |
| CN113477057A (en) * | 2021-06-15 | 2021-10-08 | 中国石油天然气股份有限公司 | SO in tail gas treatment device parking process2Emission reduction method |
| CN115448258A (en) * | 2022-08-01 | 2022-12-09 | 兖矿鲁南化工有限公司 | Claus tail gas sulfur recovery system and process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351126A (en) * | 2018-11-16 | 2019-02-19 | 中石化炼化工程（集团）股份有限公司 | Sulphur-containing exhaust gas processing method |
| CN112728974A (en) * | 2021-01-04 | 2021-04-30 | 洛阳瑞昌环境工程有限公司 | Glass tube heat exchanger capable of preventing dust deposition and blocking and application thereof |
| CN113483348A (en) * | 2021-05-28 | 2021-10-08 | 光大绿色环保管理（深圳）有限公司 | Hazardous waste incineration flue gas treatment device and method |
| CN113477057A (en) * | 2021-06-15 | 2021-10-08 | 中国石油天然气股份有限公司 | SO in tail gas treatment device parking process2Emission reduction method |
| CN115448258A (en) * | 2022-08-01 | 2022-12-09 | 兖矿鲁南化工有限公司 | Claus tail gas sulfur recovery system and process |
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