CN112794291B - Pretreatment process and system for low-quality sulfur and auxiliary salt waste liquid produced by coke oven gas desulfurization - Google Patents
Pretreatment process and system for low-quality sulfur and auxiliary salt waste liquid produced by coke oven gas desulfurization Download PDFInfo
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- CN112794291B CN112794291B CN202110215860.7A CN202110215860A CN112794291B CN 112794291 B CN112794291 B CN 112794291B CN 202110215860 A CN202110215860 A CN 202110215860A CN 112794291 B CN112794291 B CN 112794291B
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- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 148
- 239000011593 sulfur Substances 0.000 title claims abstract description 148
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 145
- 239000007788 liquid Substances 0.000 title claims abstract description 77
- 150000003839 salts Chemical class 0.000 title claims abstract description 72
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 44
- 230000023556 desulfurization Effects 0.000 title claims abstract description 44
- 239000002699 waste material Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000571 coke Substances 0.000 title claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 41
- 230000008018 melting Effects 0.000 claims abstract description 41
- 239000000706 filtrate Substances 0.000 claims abstract description 40
- 238000000926 separation method Methods 0.000 claims abstract description 31
- 239000006260 foam Substances 0.000 claims abstract description 14
- 239000000047 product Substances 0.000 claims abstract description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 52
- 229910021529 ammonia Inorganic materials 0.000 claims description 26
- 238000004821 distillation Methods 0.000 claims description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical group N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 4
- 238000005191 phase separation Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000002253 acid Substances 0.000 abstract description 12
- 239000002002 slurry Substances 0.000 description 10
- 239000012141 concentrate Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000012970 cakes Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000021463 dry cake Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
Classifications
-
- 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
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/508—Preparation of sulfur dioxide by oxidation of sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/022—Preparation of aqueous ammonia solutions, i.e. ammonia water
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Industrial Gases (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to the technical field of pretreatment of burning low-quality sulfur and side salt waste liquid of a coke oven gas desulfurization product to produce acid, in particular to a pretreatment process and a pretreatment system of burning low-quality sulfur and side salt waste liquid of a coke oven gas desulfurization product to produce acid. The concentrated solution and the liquid sulfur of the secondary salt waste liquid are respectively prepared through separation, concentration and sulfur melting operation, and then are respectively and independently sent to an incinerator for incineration to generate the liquid sulfur containing SO 2 Is a furnace gas. The system comprises a separation device, a concentration device and a sulfur melting device; the desulfurization unit sulfur foam tank is connected with the separation equipment through a pipeline, the secondary salt filtrate outlet of the separation equipment is connected with the concentration equipment through a pipeline, and the low-quality sulfur outlet of the separation equipment is connected with the sulfur melting equipment through a pipeline. The method has the advantages of short process flow, simple operation, and reduced running cost and dilute acid yield.
Description
Technical Field
The invention relates to the technical field of pretreatment of burning low-quality sulfur and side salt waste liquid of a coke oven gas desulfurization product to produce acid, in particular to a pretreatment process and a pretreatment system of burning low-quality sulfur and side salt waste liquid of a coke oven gas desulfurization product to produce acid.
Background
The coking technology for burning low-quality sulfur and side salt waste liquid to produce acid is a new technology developed in recent years for effectively treating the low-quality sulfur and side salt waste liquid produced by the wet oxidation desulfurization technology of coke oven gas.
CN109384200a discloses a process and apparatus for treating low-purity sulfur and side salt waste liquid produced by desulfurization of coke oven gas, wherein concentrated solution of low-quality sulfur and side salt waste liquid obtained by centrifugal separation is forcedly mixed uniformly to obtain sulfur slurry, and then the sulfur slurry is sent to an incinerator for incineration to generate SO-containing liquid 2 Is a furnace gas. The sulfur pulp prepared by the technology has higher water content so as to ensure the fluidity of the sulfur pulp in a pipeline; however, the subsequent operation costs are relatively high, and the dilute acid production is relatively high.
CN110107906A discloses an ammonia desulfurization waste liquid fixed bed incineration method for preparing SO 2 The process gas system and technology adopts a heating kettle to evaporate and concentrate ammonia desulfurization waste liquid (sulfur foam is basically) to respectively obtain concentrated solutions of liquid sulfur and secondary salt waste liquid, and then respectively sends the concentrated solutions to an incinerator to be incinerated to generate SO-containing liquid 2 Is a furnace gas method. Suspension of ammonia desulfurization waste liquidWhen the content of the floating sulfur is 1-100 g/L, the flow of the ammonia desulfurization waste liquid is very large, so that the steam consumption of an evaporation heater and the cooling water consumption of a washing cooler can be greatly increased, and the running cost is increased; when the content of suspended sulfur is high, although the flow of the ammonia desulfurization waste liquid is reduced, the suspended sulfur in the concentrated circulating liquid is greatly improved synchronously, is easily attached to the wall of a heat exchange tube of the evaporation heater and is melted, so that the heat exchange efficiency is greatly reduced, and even the evaporation heater is blocked.
CN111285335a discloses a system for preparing sulfuric acid by semi-dry method of sulfur foam and desulfurization waste liquid and an acid preparation method, wherein concentrated solutions of liquid sulfur and side salt waste liquid are respectively prepared through a separation procedure, and then are respectively sent to an incinerator to be incinerated to generate SO-containing solution 2 Is a furnace gas. Although the water content in the concentrated solution sent to the incinerator is reduced, the subsequent operation cost and the dilute acid yield are reduced, the separation process involves operations such as filtration, multiple separation, sulfur melting, oxidation, ammonia distillation, concentration, condensation and the like, the process flow is too long, the process equipment is too many, and the operation is too complex.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the pretreatment process and the pretreatment system for the low-quality sulfur and the auxiliary salt waste liquid of the coke oven gas desulfurization product, which have the advantages of short process flow, simple operation and reduced running cost and dilute acid yield.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the pretreatment process of the low-quality sulfur and the secondary salt waste liquid of the coke oven gas desulfurization product specifically comprises the following steps:
1) Firstly, delivering sulfur foam from a sulfur foam tank of a desulfurization unit to separation equipment, and performing solid-liquid two-phase separation operation to obtain secondary salt filtrate and low-quality sulfur;
2) Most of the secondary salt filtrate is sent back to the desulfurization unit, and a small part of the secondary salt filtrate is sent to the concentration equipment for concentration operation;
3) Concentrating to obtain secondary salt concentrated solution, and independently delivering the secondary salt concentrated solution to an incinerator for incineration;
4) The ammonia-containing steam distilled from the concentration equipment is sent out by an ammonia-containing steam pipeline;
5) All the low-quality sulfur is sent to sulfur melting equipment for sulfur melting operation, and after the sulfur melting equipment is heated and melted, liquid sulfur is obtained and is sent to an incinerator for burning.
Step 3) the secondary salt concentrate is near saturation or saturated.
And 4) directly sending the ammonia-containing steam to a pre-cooling tower front gas pipeline of a desulfurization unit, a pre-saturator front gas pipeline of an ammonium sulfate unit or an ammonia steam pipeline at the top of an ammonia distillation tower of the ammonia distillation unit.
And step 4), the ammonia-containing steam can be directly returned to a desulfurization unit and the like or condensed into dilute ammonia water and then sent to a desulfurization unit, an ammonium sulfate unit or an ammonia distillation unit.
A pretreatment system for low-quality sulfur and secondary salt waste liquid of a coke oven gas desulfurization product comprises a separation device, a concentration device and a sulfur melting device; the desulfurization unit sulfur foam tank is connected with the separation equipment through a pipeline, the secondary salt filtrate outlet of the separation equipment is connected with the concentration equipment through a pipeline, and the low-quality sulfur outlet of the separation equipment is connected with the sulfur melting equipment through a pipeline.
The separation equipment is a centrifuge, a filter press, a rotary drum filter, a microporous filter or a leaf filter.
The concentration device comprises a concentration tower, a concentrated solution heater and a concentrated solution circulating pump.
The concentrated solution heater is connected with the upper part of the concentration tower through a pipeline, and the concentrated solution circulating pump is connected with the bottom of the concentration tower through a pipeline.
The sulfur melting equipment is a sulfur melting tank or a sulfur melting kettle.
Compared with the prior art, the invention has the beneficial effects that:
the invention prepares concentrated solution of the secondary salt waste liquid and liquid sulfur respectively through separation, concentration and sulfur melting operation, and then respectively and independently sends the concentrated solution and the liquid sulfur to an incinerator for incineration to generate the liquid sulfur containing SO 2 Is a furnace gas. The method has the advantages of short process flow, simple operation, and reduced running cost and dilute acid yield.
By separation operation, the content of suspended sulfur in the secondary salt filtrate is very low, so that the blockage of a desulfurization unit and the blockage of concentration equipment are avoided. Through separation operation, the low-quality sulfur has low water and side salt content and high sulfur content, and is convenient for sulfur melting operation.
Drawings
FIG. 1 is a schematic structural and process diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic structural and process schematic diagram of embodiment 2 of the present invention.
In the figure: 1-plate-and-frame filter press, 2-filtrate tank, 3-filtrate pump, 4-concentration tower, 5-concentrate circulating pump, 6-concentrate heater, 7-sulfur melting tank, 8-liquid sulfur tank, 9-liquid sulfur pump, 10-centrifuge, 11-sulfur melting kettle, 12-stirring tank, 13-sulfur slurry pump
Detailed Description
The following detailed description of specific embodiments of the invention is further detailed in conjunction with the accompanying drawings:
[ example 1 ]
As shown in fig. 1, the pretreatment system for low-quality sulfur and auxiliary salt waste liquid of the coke oven gas desulfurization product comprises a plate-and-frame filter press 1, a concentration tower 4, a sulfur melting tank 7 and a liquid sulfur tank 8.
The outlet of the plate-and-frame filter press 1 is connected with an auxiliary salt filtrate pipeline through a pipeline, and a filtrate tank 2 and a filtrate pump 3 are arranged on the pipeline connected with the auxiliary salt filtrate pipeline at the outlet of the plate-and-frame filter press 1. The pipeline that the export of plate and frame filter press 1 links to each other with vice salt filtrate pipeline is equipped with the lateral conduit and links to each other with concentration tower 4, is equipped with concentrate heater 6 on the lateral conduit, and concentrate heater 6 passes through the pipeline and links to each other with concentration tower 4 upper portion. The top of the concentration tower 4 is connected with an ammonia-containing steam pipeline, the bottom of the concentration tower 4 is connected with a secondary salt concentrated solution pipeline, and a concentrated solution circulating pump 5 is arranged on the pipeline connected with the secondary salt concentrated solution pipeline at the bottom of the concentration tower 4.
The low-quality sulfur outlet at the bottom of the plate-and-frame filter press 1 is connected with a sulfur melting tank 7 through a pipeline, the sulfur melting tank 7 is connected with a liquid sulfur tank 8 through a pipeline, the liquid sulfur tank 8 is connected with a liquid sulfur pipeline, and a liquid sulfur pump 9 is arranged on the pipeline connected with the liquid sulfur tank 8 and the liquid sulfur pipeline.
The pretreatment process of the low-quality sulfur and the secondary salt waste liquid of the coke oven gas desulfurization product specifically comprises the following steps:
1) The sulfur foam sent from the sulfur foam tank of the desulfurization unit is sent to the plate-and-frame filter press 1 of the separation equipment to carry out the separation operation of solid and liquid phases.
2) The secondary salt filtrate flowing out through the filter plate enters the filtrate tank 2, and after being pressurized by the filtrate pump 3, most of the secondary salt filtrate is sent back to the desulfurization unit, and the small part (corresponding to the generation amount of the secondary salt waste liquid) is sent to the concentration tower 4 of the concentration equipment for concentration operation.
3) The sulfur particles in the sulfur foam are extruded in each filter chamber, and low-quality sulfur dry cakes are automatically formed. After the separation operation is finished, the compressed filter plate is loosened, the sulfur cake unloading operation is carried out, and the sulfur cake is automatically unloaded to the sulfur melting tank 7 for sulfur melting operation.
4) The secondary salt waste liquid to be concentrated is directly added into a circulating liquid pipeline before a concentrated solution heater 6, is heated by low-pressure steam and is sent to a concentration tower for evaporation, and the excessive secondary salt concentrated solution is directly and independently sent to an incinerator for incineration through a concentrated circulating liquid pump 5.
5) The ammonia-containing steam distilled from the top of the concentration tower 4 can be directly sent to a gas pipeline in front of a precooling tower of the desulfurization unit, is not discharged, and can be condensed into dilute ammonia water and then sent to the desulfurization unit.
[ example 2 ]
As shown in fig. 2, the pretreatment system for low-quality sulfur and auxiliary salt waste liquid of the coke oven gas desulfurization product comprises a centrifuge 10, a concentration tower 4, a liquid sulfur tank 8, a stirring tank 12, a sulfur slurry pump 13 and a sulfur melting kettle 11.
The outlet of the auxiliary salt filtrate of the centrifugal machine 10 is connected with the auxiliary salt filtrate pipeline through a pipeline, and a filtrate tank 2 and a filtrate pump 3 are arranged on the pipeline of the connection of the outlet of the centrifugal machine 10 and the auxiliary salt filtrate pipeline. The pipeline that centrifuge 10 export links to each other with vice salt filtrate pipeline is equipped with the lateral conduit and links to each other with concentration tower 4, is equipped with concentrate heater 6 on the lateral conduit, and concentrate heater 6 links to each other with concentration tower 4 upper portion through the pipeline. The top of the concentration tower 4 is connected with an ammonia-containing steam pipeline, the bottom of the concentration tower 4 is connected with a secondary salt concentrated solution pipeline, and a concentrated solution circulating pump 5 is arranged on the pipeline connected with the secondary salt concentrated solution pipeline at the bottom of the concentration tower 4.
The low-quality sulfur outlet at the bottom of the centrifugal machine 10 is connected with a stirring tank 12 through a pipeline, the stirring tank 12 is connected with a sulfur melting kettle 11 through a pipeline, and a sulfur slurry pump 13 is arranged on the connected pipeline. The sulfur melting kettle 11 is connected with the liquid sulfur tank 8 through a pipeline, the liquid sulfur tank 8 is connected with a liquid sulfur pipeline, and a liquid sulfur pump 9 is arranged on the pipeline connected with the liquid sulfur tank 8 and the liquid sulfur pipeline. The top of the sulfur melting kettle 11 is connected with the concentration tower 4 through a pipeline.
The pretreatment process of the low-quality sulfur and the secondary salt waste liquid of the coke oven gas desulfurization product specifically comprises the following steps:
1) The sulfur foam from the desulfurization unit sulfur foam is first sent to a centrifuge 10 (separation device) for solid-liquid two-phase separation to obtain secondary salt filtrate and low-quality sulfur wet paste.
2) The secondary salt filtrate enters the filtrate tank 2, and after being pressurized by the filtrate pump 3, most of the secondary salt filtrate is returned to the desulfurization unit, and a small part (corresponding to the generated amount of the secondary salt waste liquid) of the secondary salt filtrate can be sent to a sulfur wet paste discharging pipe of the centrifugal machine 10 to flush the pipe wall, so that the blockage caused by the wall hanging of the sulfur wet paste is prevented, and the secondary salt filtrate can also be sent to concentration equipment to carry out concentration operation.
3) The low-quality sulfur wet paste enters the stirring tank 12 along with the secondary salt filtrate for flushing the pipe wall under the action of gravity. The low-quality sulfur wet paste and the secondary salt filtrate are fully and uniformly mixed in the stirring tank 12 under the forced stirring to prepare sulfur slurry, so that the fluidity is increased. The sulfur slurry with good fluidity can be directly obtained by adjusting the blanking concentration of the sulfur wet paste of the centrifugal machine 10, and at this time, a small part (corresponding to the generation amount of the secondary salt waste liquid) of the secondary salt filtrate is completely or partially sent to a concentrating device for concentrating operation.
4) The sulfur slurry in the stirring tank 12 is pressurized by a sulfur slurry pump 13 and then sent to the sulfur melting kettle 11 for sulfur melting operation. The sulfur slurry is clarified and separated in a sulfur melting kettle 11, and sulfur is settled to the lower part of the kettle and is heated and melted by steam to become liquid sulfur. The liquid sulfur at the bottom of the sulfur melting kettle 11 enters the liquid sulfur tank 8 under the action of gravity, is pressurized by the liquid sulfur pump 9 and is directly and independently sent to the incinerator for incineration. And delivering the secondary salt filtrate at the top of the sulfur melting kettle 11 to concentration equipment for concentration operation.
5) The secondary salt filtrate to be concentrated is directly added into a circulating liquid pipeline before a concentrated solution heater 6, is heated by low-pressure steam and is sent to a concentration tower 4 for evaporation, and the excessive secondary salt concentrated solution is directly and independently sent to an incinerator for incineration through a concentrated circulating liquid pump 5. The ammonia-containing steam distilled from the top of the concentration tower 4 can be directly sent to a gas pipeline in front of a precooling tower of the desulfurization unit, is not discharged, and can be condensed into dilute ammonia water and then sent to the desulfurization unit.
The invention prepares concentrated solution of the secondary salt waste liquid and liquid sulfur respectively through separation, concentration and sulfur melting operation, and then respectively and independently sends the concentrated solution and the liquid sulfur to an incinerator for incineration to generate the liquid sulfur containing SO 2 Is a furnace gas. The method has the advantages of short process flow, simple operation, and reduced running cost and dilute acid yield.
By separation operation, the content of suspended sulfur in the secondary salt filtrate is very low, so that the blockage of a desulfurization unit and the blockage of concentration equipment are avoided. Through separation operation, the low-quality sulfur has low water and side salt content and high sulfur content, and is convenient for sulfur melting operation.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (1)
1. A pretreatment process for low-quality sulfur and secondary salt waste liquid of a coke oven gas desulfurization product is characterized in that,
the system comprises a separation device, a concentration device and a sulfur melting device; the sulfur foam tank of the desulfurization unit is connected with the separation equipment through a pipeline, the secondary salt filtrate outlet of the separation equipment is connected with the concentration equipment through a pipeline, and the low-quality sulfur outlet of the separation equipment is connected with the sulfur melting equipment through a pipeline;
the separation equipment is a centrifuge or a filter press;
the concentrating device comprises a concentrating tower, a concentrated solution heater and a concentrated solution circulating pump;
the concentrated solution heater is connected with the upper part of the concentrating tower through a pipeline, and the concentrated solution circulating pump is connected with the bottom of the concentrating tower through a pipeline;
the sulfur melting equipment is a sulfur melting tank or a sulfur melting kettle;
the concentrated solution and the liquid sulfur of the secondary salt waste liquid are respectively prepared through separation, concentration and sulfur melting operation, and then are respectively and independently sent to an incinerator for incineration to generate the liquid sulfur containing SO 2 Specifically comprises the following steps:
1) Firstly, delivering sulfur foam from a sulfur foam tank of a desulfurization unit to a centrifuge or a filter press for solid-liquid two-phase separation operation to obtain secondary salt filtrate and low-quality sulfur;
2) Most of the secondary salt filtrate is sent back to the desulfurization unit, and a small part of the secondary salt filtrate is sent to the concentration equipment for concentration operation;
3) Concentrating to obtain secondary salt concentrated solution, and independently delivering the secondary salt concentrated solution to an incinerator for incineration;
the secondary salt concentrated solution is in a nearly saturated state or a saturated state;
4) The ammonia-containing steam distilled from the concentration equipment is sent out by an ammonia-containing steam pipeline;
the ammonia-containing steam is directly sent to a pre-cooling tower front gas pipeline of a desulfurization unit, a saturator front gas pipeline of an ammonium sulfate unit or an ammonia steam pipeline at the top of an ammonia distillation tower of the ammonia distillation unit;
the ammonia-containing steam is condensed into dilute ammonia water and then sent to a desulfurization unit, an ammonium sulfate unit or an ammonia distillation unit;
5) All the low-quality sulfur is sent to sulfur melting equipment for sulfur melting operation, and after the sulfur melting equipment is heated and melted, liquid sulfur is obtained and is sent to an incinerator for burning.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113968574A (en) * | 2021-11-26 | 2022-01-25 | 山东绿知源环保工程有限公司 | Process for efficiently separating elemental sulfur from desulfurization solution and sulfur foam |
| CN114602299B (en) * | 2022-03-08 | 2023-03-31 | 太原理工大学 | Treatment process for coking desulfurization by-product |
| CN114620692A (en) * | 2022-03-24 | 2022-06-14 | 唐山中大科技有限公司 | Process for preparing sulfuric acid by carrying out salt extraction and co-firing on coking desulfurization foam sulfur melting and desulfurization waste liquid melting method |
| CN114890389B (en) * | 2022-03-31 | 2024-04-09 | 铜陵泰富特种材料有限公司 | Pretreatment method of coking desulfurization acid-making raw material |
| CN115650180A (en) * | 2022-11-15 | 2023-01-31 | 中冶焦耐(大连)工程技术有限公司 | Coking desulfurization waste liquid and liquid sulfur incineration acid making method and system |
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| JPH0693274A (en) * | 1992-09-09 | 1994-04-05 | Nippon Steel Chem Co Ltd | Treatment of waste liquor from desulfurization and decynization of coke oven gas |
| CN102259894A (en) * | 2011-05-27 | 2011-11-30 | 山东美科动力有限公司 | Comprehensive recovery process of secondary salts from coking plant desulfurization waste liquid |
| CN111285335A (en) * | 2020-02-22 | 2020-06-16 | 江苏康茂环保工程有限公司 | System for preparing sulfuric acid by using sulfur foam and desulfurization waste liquid semidry method and acid preparation method |
| CN112093778A (en) * | 2020-10-15 | 2020-12-18 | 中冶焦耐(大连)工程技术有限公司 | Treatment process for by-product low-quality sulfur in coke oven gas desulfurization process |
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2021
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0693274A (en) * | 1992-09-09 | 1994-04-05 | Nippon Steel Chem Co Ltd | Treatment of waste liquor from desulfurization and decynization of coke oven gas |
| CN102259894A (en) * | 2011-05-27 | 2011-11-30 | 山东美科动力有限公司 | Comprehensive recovery process of secondary salts from coking plant desulfurization waste liquid |
| CN111285335A (en) * | 2020-02-22 | 2020-06-16 | 江苏康茂环保工程有限公司 | System for preparing sulfuric acid by using sulfur foam and desulfurization waste liquid semidry method and acid preparation method |
| CN112093778A (en) * | 2020-10-15 | 2020-12-18 | 中冶焦耐(大连)工程技术有限公司 | Treatment process for by-product low-quality sulfur in coke oven gas desulfurization process |
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