CN114768504A - Efficient sulfur melting process - Google Patents
Efficient sulfur melting process Download PDFInfo
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- CN114768504A CN114768504A CN202210543012.3A CN202210543012A CN114768504A CN 114768504 A CN114768504 A CN 114768504A CN 202210543012 A CN202210543012 A CN 202210543012A CN 114768504 A CN114768504 A CN 114768504A
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- sulfur melting
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 122
- 239000011593 sulfur Substances 0.000 title claims abstract description 122
- 238000010309 melting process Methods 0.000 title claims abstract description 12
- 239000006260 foam Substances 0.000 claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 238000002844 melting Methods 0.000 claims abstract description 41
- 230000008018 melting Effects 0.000 claims abstract description 39
- 230000008929 regeneration Effects 0.000 claims abstract description 27
- 238000011069 regeneration method Methods 0.000 claims abstract description 27
- 239000003513 alkali Substances 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 230000006872 improvement Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 8
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 8
- 230000008719 thickening Effects 0.000 claims description 7
- 230000002035 prolonged effect Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 150000003839 salts Chemical group 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000001172 regenerating effect Effects 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 7
- 150000003568 thioethers Chemical class 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Images
Classifications
-
- 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
- B01D53/73—After-treatment of removed components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/04—Controlling the filtration
-
- 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
-
- 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
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/005—Fusing
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
- C10K1/004—Sulfur containing contaminants, e.g. hydrogen sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/12—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a high-efficiency sulfur melting process which is characterized by comprising the following steps: absorbing and reacting sulfur-containing components in the water gas by using an alkali liquor through a desulfurizing tower to form a rich solution, regenerating the rich solution through a regeneration tank with a self-suction ejector, forming sulfur foams in the regeneration tank to overflow to a sulfur foam tank, overflowing the regenerated clear solution to a lean solution tank for recycling, conveying the sulfur foams to a filter through a sulfur foam pump, filtering the sulfur foams containing partial clear solution to realize the purposes of quality improvement and concentration increase, pumping the concentrated sulfur foams to a sulfur melting kettle by using a pump to melt sulfur, and recycling the clear solution. The process can reduce the circulating amount of sulfur foam, delay the rising rate of secondary salt, reduce the generation amount of the secondary salt, recycle the clear liquid, and greatly improve the sulfur melting quality and the sulfur melting recovery rate.
Description
Technical Field
The invention belongs to the field of chemical industry, and particularly relates to an efficient sulfur melting process.
Background
In the chemical industry, a wet desulphurization process is often adopted to remove sulfides from sulfur-containing gases such as water gas and the like, and the process is very important for recovering the removed sulfides. The existing sulfur melting process directly melts sulfur through a sulfur melting kettle after recycling overflow sulfur foam of a regeneration tank, the sulfur foam overflow per se in the process carries more alkali liquor, the circulating amount of the sulfur melting kettle is large, the recovery sulfur melting clear solution amount is large, the generation of the secondary salt of the clear solution is fast due to high-temperature heating of the sulfur melting kettle, the discharge displacement amount of the alkali liquor per year is large, the sulfur melting quality is reduced, and the sulfur recovery rate is low.
Disclosure of Invention
The invention aims to solve the problems and provide a high-efficiency sulfur melting process.
In order to achieve the purpose, the invention adopts the technical scheme that: a high-efficiency sulfur melting process is characterized in that: a sulfur melting device is adopted to realize desulfurization and sulfur melting;
the sulfur melting device is as follows: a liquid outlet at the bottom of the desulfurization tower is connected with a liquid enrichment tank, a liquid outlet at the bottom of the liquid enrichment tank is connected with an ejector of a regeneration tank through a liquid enrichment pump, an overflow port at the upper part of the regeneration tank is connected with a sulfur foam tank, a clear liquid port at the upper part of the regeneration tank is connected with a liquid poor tank, a foam pipe at the bottom of the sulfur foam tank is connected with a filter through a sulfur foam pump, an outlet at the bottom of the filter is connected with an intermediate tank, a foam pipe at the lower part of the intermediate tank is connected with a sulfur melting kettle through a foam pump, a liquid outlet at the upper part of the sulfur melting kettle is connected with a cooling tank, and an outlet at the lower part of the cooling tank is connected with a second storage pool;
the specific process comprises the following steps:
a. the water gas enters a desulfurizing tower from the bottom of the tower, and is subjected to mass transfer heat with sprayed alkali liquor on the top of the tower in a countercurrent manner to absorb sulfur-containing substances in the water gas to form rich liquor which enters a rich liquor tank from the bottom of the tower;
b. then the rich solution enters a regeneration tank through a regeneration tank ejector by a pump, the formed sulfur foam overflows from the top of the regeneration tank and enters a sulfur foam tank after oxidation regeneration, and clear solution returns to a barren solution tank from the bottom of the regeneration tank;
c. conveying the sulfur foam into a filter by a pump for quality improvement and thickening, controlling the filtering pressure to be 1-100 KPa (a), adjusting the control step of the filter according to the content of suspended sulfur in the filtered alkali liquor, recovering the sulfur foam subjected to quality improvement and thickening to an intermediate tank, and allowing the supernatant at the top of the intermediate tank to enter a lean solution tank for recycling;
d. conveying the upgraded and concentrated sulfur foam in the middle tank to a sulfur melting kettle by a pump for heating sulfur, and discharging melted sulfur from the bottom of the sulfur melting kettle to form a sulfur cake as a byproduct; and the sulfur-melting clear liquid enters a cooling tank from the top of the sulfur-melting kettle, enters a second storage pool after cooling, settling and separation, and is pumped into a lean liquid tank for recycling.
A clear liquid pipe is arranged at the upper part of the filter and is connected into the barren liquor tank; the lower part of the filter is provided with a back flushing pipe, and the back flushing pipe is connected into a first storage pool.
Still connect trouble pipe and urgent pipe on the foam pipe, the storage pond is connected into to the trouble pipe, and urgent union coupling dense bubble pipe.
In the step c, the quality improvement and concentration increase is divided into six steps of liquid inlet, clear liquid backflow, filtration, backflushing, sedimentation and slag discharge; the time control of each step is as follows: controlling the liquid inlet at 40-60 seconds, refluxing clear liquid for 30-50 seconds, filtering for 1000-2000 seconds, backflushing for 30-50 seconds, settling for 8-120 seconds, and checking for 10-20 seconds; the step sequence of controlling the filter is adjusted, and the method specifically comprises the following steps: when the suspended sulfur is higher than 0.5g/l, the filtering time is shortened, and the back flushing time is prolonged by 5-10 seconds; when the suspended sulfur is less than 0.5g/l, the filtration period is gradually prolonged, and the back flushing time is shortened by 5-10 seconds.
In the step d, the temperature in the sulfur melting kettle is controlled to be 120-135 ℃, the pressure is 0-0.4MPa, and the temperature of an outlet at the top of the tower is controlled to be 80-90 ℃.
The principle of the invention is as follows: absorbing and reacting sulfur-containing components in the water gas by using alkali liquor through a desulfurizing tower to form rich liquor, regenerating through a regeneration tank with a self-absorption ejector, forming sulfur foams in the regeneration tank, overflowing to the sulfur foam tank, overflowing the regenerated clear liquid to a lean liquid tank for recycling, pumping the sulfur foams to a Gole filter, filtering the sulfur foams containing partial clear liquid to realize the purpose of quality improvement and concentration increase, pumping the concentrated sulfur foams to a sulfur melting kettle for sulfur melting, and recycling the clear liquid.
The beneficial effects of the invention are: the sulfur foam is continuously melted after the sulfur foam is subjected to quality improvement and thickening separation, the sulfur foam filter is arranged in the device and used for filtering the sulfur foam, so that the quality improvement and thickening are achieved, the circulating amount of the sulfur foam is reduced, the amount of alkali liquor carried in the sulfur melting foam is reduced by 50%, the sulfur melting efficiency and the sulfur quality are improved, the steam consumption is reduced, and the steam consumption cost is effectively saved; by reducing the amount of the molten sulfur foam carrying alkali liquor and increasing a molten sulfur clear liquid cooling system, the rising rate of the secondary salt is delayed, the service life of the alkali liquor is prolonged, the external discharge capacity of the alkali liquor is reduced, and the purposes of safety, environmental protection and continuous sulfur melting are achieved.
Drawings
FIG. 1 is a process flow diagram of the present invention;
in the figure: 1-a desulfurizing tower, 2-a pregnant solution tank, 3-a pregnant solution pump, 4-a regeneration tank, 5-a sulfur foam tank, 6-a barren solution tank, 7-a sulfur foam pump, 8-a Goll filter, 9-an intermediate tank, 10-a sulfur melting kettle, 11-a cooling tank, 12-a dense foam pump, 13-a storage pool and 14-a storage pool;
a-a clear liquid pipe, B-a foam pipe, B1-a fault pipe, B2-an emergency pipe, C-a backflushing liquid pipe and D-a thick bubble pipe.
Detailed Description
Example 1. in the following, see figure 1,
the working process is as follows: the water gas enters a desulfurizing tower 1 from the bottom of the tower, and is subjected to mass transfer heat with sprayed alkali liquor on the top of the tower in a countercurrent manner to absorb sulfur-containing substances in the water gas to form rich liquor, the rich liquor enters a rich liquor tank 2 from the bottom of the tower, the rich liquor enters a regeneration tank 4 through a regeneration tank ejector by a rich liquor pump 3 and is regenerated in the regeneration tank, clear liquor at the bottom of the regeneration tank 4 enters a lean liquor tank 6 to be recycled, sulfur foam overflows from the top of the regeneration tank 4 and enters a sulfur foam tank 5, the collected sulfur foam is conveyed to a filter 8 by a sulfur foam pump 7, the sulfur foam filtered by the filter 8 enters an intermediate tank 9, the upgraded and enriched sulfur foam is conveyed to a sulfur melting kettle 10 by a concentrated foam pump 12 to be melted, sulfur is recovered from the bottom of the kettle, clear liquor at the top of the sulfur melting kettle 10 is cooled by a cooling tank 11, and then is recovered to a storage tank 14 II, and then is pumped to the lean liquor tank 6 to be recycled.
And (3) recycling the filtered clear liquid and the backflushing liquid of the filter 8: the filtered clear liquid enters a lean liquor tank 6 through a clear liquid pipe A, the backflushing liquid enters a first storage tank 13 through a backflushing liquid pipe C, and the backflushing liquid is conveyed to a sulfur melting kettle 10 through a pump to continue to melt sulfur, so that the continuous and stable operation of a sulfur melting system is ensured.
When the filter 8 breaks down, the maintenance is planned, and the fault pipe B1 is put into use when the time is long, so that the sulfur foam directly enters the first storage tank 13; when the filter 8 breaks down suddenly and the amount of sulfur foam is large, a control valve on the emergency pipe B2 is opened, and the sulfur enters the sulfur melting kettle 10 through the concentrated foam pipe D for sulfur melting.
The above description is intended to be illustrative of the present invention and should not be taken as limiting the invention, as the invention is intended to cover various modifications, equivalents, improvements, and equivalents, which may be made within the spirit and scope of the present invention.
Claims (5)
1. An efficient sulfur melting process is characterized in that: a sulfur melting device is adopted to realize desulfurization and sulfur melting;
the sulfur melting device is as follows: a liquid outlet at the bottom of a desulfurizing tower (1) is connected with a liquid-rich tank (2), a liquid outlet at the bottom of the liquid-rich tank (2) is connected with an ejector of a regeneration tank (4) through a liquid-rich pump (3), an overflow port at the upper part of the regeneration tank (4) is connected with a sulfur foam tank (5), a clear liquid port at the upper part of the regeneration tank (4) is connected with a liquid-poor tank (6), a foam pipe (B) at the bottom of the sulfur foam tank (5) is connected with a filter (8) through a sulfur foam pump (7), an outlet at the bottom of the filter (8) is connected with a middle tank (9), a thick foam pipe (D) at the lower part of the middle tank (9) is connected with a sulfur melting kettle (10) through a thick foam pump (12), a liquid outlet at the upper part of the sulfur melting kettle (10) is connected with a cooling tank (11), and an outlet at the lower part of the cooling tank (11) is connected with a storage pool (14);
the specific process comprises the following steps:
a. the water gas enters a desulfurizing tower (1) from the bottom of the tower, flows back to the top of the tower with sprayed alkali liquor, transfers heat through mass transfer, absorbs sulfur-containing substances in the water gas, and forms rich liquid which enters a rich liquid tank (2) from the bottom of the tower;
b. then, the rich solution enters a regeneration tank (4) through a regeneration tank ejector by a pump, the formed sulfur foam overflows from the top of the regeneration tank and enters a sulfur foam tank (5) through oxidation regeneration, and clear solution returns to a barren solution tank (6) from the bottom of the regeneration tank (4);
c. conveying the sulfur foam into a filter (8) by a pump for quality improvement and thickening, controlling the filtering pressure to be 1-100 KPa (a), adjusting the control step sequence of the filter according to the content of suspended sulfur in filtered alkali liquor, recovering the sulfur foam subjected to quality improvement and thickening into an intermediate tank (9), and allowing the top clear liquid to enter a lean liquid tank (6) for recycling;
d. conveying the quality-improved and concentrated sulfur foam of the middle tank (9) to a sulfur melting kettle (10) by a pump for heating and melting sulfur, and discharging the melted sulfur from the bottom of the sulfur melting kettle to form sulfur cakes as byproducts; the sulfur melting clear liquid enters a cooling tank (11) from the top of the sulfur melting kettle, enters a second storage pool (14) after cooling, settling and separation, and is pumped into a lean liquor tank (6) for recycling.
2. The high-efficiency sulfur melting process of claim 1, wherein: a clear liquid pipe (A) is arranged at the upper part of the filter (8) and is connected with the barren liquor tank (6); a back flushing liquid pipe (C) is arranged at the lower part of the filter (8) and is connected into a first storage pool (13).
3. The high-efficiency sulfur melting process of claim 1, wherein: the foam tube (B) is also connected with a fault tube (B1) and an emergency tube (B2), the fault tube (B1) is connected to the first storage pool (13), and the emergency tube (B2) is connected with the dense foam tube (D).
4. The high-efficiency sulfur melting process according to claim 1, characterized in that: in the step c, the quality improvement and thickening are divided into six steps of liquid inlet, clear liquid backflow, filtration, back flushing, sedimentation and slag discharge; the time control of each step is as follows: controlling the liquid inlet at 40-60 seconds, refluxing clear liquid for 30-50 seconds, filtering for 1000-2000 seconds, backflushing for 30-50 seconds, settling for 8-120 seconds, and checking for 10-20 seconds; the step sequence of controlling the filter is adjusted, and the method specifically comprises the following steps: when the suspended sulfur is higher than 0.5g/l, the filtering time is shortened, and the back flushing time is prolonged by 5-10 seconds; when the suspended sulfur is less than 0.5g/l, the filtration period is gradually prolonged, and the back flushing time is shortened by 5-10 seconds.
5. The high-efficiency sulfur melting process of claim 1, wherein: in the step d, the temperature in the sulfur melting kettle is controlled to be 120-135 ℃, the pressure is 0-0.4MPa, and the outlet temperature at the top of the tower is controlled to be 80-90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210543012.3A CN114768504B (en) | 2022-05-19 | 2022-05-19 | Efficient sulfur melting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210543012.3A CN114768504B (en) | 2022-05-19 | 2022-05-19 | Efficient sulfur melting process |
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| Publication Number | Publication Date |
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| CN114768504A true CN114768504A (en) | 2022-07-22 |
| CN114768504B CN114768504B (en) | 2023-12-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62183835A (en) * | 1985-10-11 | 1987-08-12 | ウ−テ−ベ−・ウムベルトテクニク・ブクス・ア−ゲ− | Method and device for desulfurizing gas containing hydrogen sulfide |
| CN207404839U (en) * | 2017-10-19 | 2018-05-25 | 云南鼎和环保科技有限公司 | The device of sulphur is recycled in a kind of wet desulfurizing process from sulphur foam solution |
| CN110331009A (en) * | 2019-07-19 | 2019-10-15 | 北京优艺康光学技术有限公司 | A kind of sulphur foam and doctor solution are separated by filtration technique |
-
2022
- 2022-05-19 CN CN202210543012.3A patent/CN114768504B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62183835A (en) * | 1985-10-11 | 1987-08-12 | ウ−テ−ベ−・ウムベルトテクニク・ブクス・ア−ゲ− | Method and device for desulfurizing gas containing hydrogen sulfide |
| CN207404839U (en) * | 2017-10-19 | 2018-05-25 | 云南鼎和环保科技有限公司 | The device of sulphur is recycled in a kind of wet desulfurizing process from sulphur foam solution |
| CN110331009A (en) * | 2019-07-19 | 2019-10-15 | 北京优艺康光学技术有限公司 | A kind of sulphur foam and doctor solution are separated by filtration technique |
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