CN114014274A - Sulfur paste reduced-pressure vaporization sulfur extraction device and process thereof - Google Patents
Sulfur paste reduced-pressure vaporization sulfur extraction device and process thereof Download PDFInfo
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- CN114014274A CN114014274A CN202111554138.2A CN202111554138A CN114014274A CN 114014274 A CN114014274 A CN 114014274A CN 202111554138 A CN202111554138 A CN 202111554138A CN 114014274 A CN114014274 A CN 114014274A
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- 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
- C01B17/027—Recovery of sulfur from material containing elemental sulfur, e.g. luxmasses or sulfur containing ores; Purification of the recovered sulfur
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Abstract
The invention discloses a sulfur paste reduced pressure vaporization extraction device and a process thereof, which comprises a vaporization furnace, a sulfur heat exchanger, a vapor-liquid separator and a reciprocating vacuum pump, wherein the top of the vaporization furnace is provided with a sulfur raw material inlet and a vaporized sulfur gas outlet, the sulfur gas outlet is communicated with a sulfur heat exchanger pipeline, sulfur gas is condensed in the sulfur heat exchanger so as to obtain liquid sulfur with higher purity, the sulfur heat exchanger is also provided with a vapor-liquid outlet which is not completely condensed, the vapor-liquid outlet is communicated with the vapor-liquid separator pipeline, liquid sulfur is separated from the bottom of the vapor-liquid separator, and the top pipeline is communicated with the reciprocating vacuum pump. The sulfur paste is evaporated under reduced pressure to extract the sulfur, the evaporation temperature of the sulfur is effectively reduced, the problem of serious corrosion of the sulfur to metal equipment at high temperature is solved, the safety is high, the energy consumption is reduced, and the service life of the equipment is effectively prolonged.
Description
Technical Field
The invention particularly relates to a device and a process for extracting sulfur by sulfur paste through reduced pressure vaporization.
Background
In the process of refining sulfur by vaporizing sulfur paste, a vaporizing furnace is the key equipment.
The sulfur paste is heated and sublimated to extract sulfur, and the obtained sulfur has stable quality and high purity, but the vaporization temperature of the sulfur is high and needs to reach more than 444.6 ℃. This not only results in higher energy consumption, but also the corrosion problem is always a gap that can not be broken through in the industry.
At present, chemical reactions carried out at home and abroad by using sulfur steam have a bottleneck which cannot be exceeded all the time, namely, the sulfur reaction between the sulfur steam and metal at the temperature of more than 350 ℃. For example: synthesizing thiophene from sulfur steam and butadiene; the sulfur steam and methane synthesize carbon disulfide, etc., and the service life of the reaction furnace is generally less than half a year no matter cast iron, carbon steel, stainless steel or other alloy materials are used.
The life of the vaporizing furnace is not long in the process of extracting refined sulfur by vaporizing sulfur paste, if the vaporizing furnace is directly heated by using coal gas or a power supply, the life of the vaporizing furnace is only about one month, and if the vaporizing furnace is indirectly heated, the life of the vaporizing furnace is only about 4 months. The production cost is increased, the overhaul is frequent, the production efficiency is low, and the waste is serious. And the equipment is always accompanied with the leakage and combustion of sulfur steam when being scrapped, thereby causing environmental pollution and potential safety hazard.
Disclosure of Invention
The invention aims to provide a device and a process for extracting sulfur by sulfur paste reduced pressure vaporization, and aims to solve the problems in the background technology.
The invention discloses a sulfur paste reduced-pressure vaporization sulfur extraction device, which comprises a vaporization furnace, a sulfur heat exchanger, a vapor-liquid separator and a reciprocating vacuum pump, wherein a sulfur raw material inlet and a vaporized sulfur gas outlet are formed in the top of the vaporization furnace, the sulfur gas outlet is communicated with a sulfur heat exchanger pipeline, sulfur gas is condensed in the sulfur heat exchanger so as to obtain liquid sulfur with higher purity, a vapor-liquid outlet which is not completely condensed is also formed in the sulfur heat exchanger, the vapor-liquid outlet is communicated with the vapor-liquid separator pipeline, liquid sulfur is separated from the bottom of the vapor-liquid separator, and the top pipeline is communicated with the reciprocating vacuum pump.
Preferably, a sulfur barrel is communicated with a purified liquid sulfur outlet of the sulfur heat exchanger and the vapor-liquid separator for collecting liquid sulfur.
Preferably, the sulfur barrel and the reciprocating vacuum pump are both communicated with a tail gas treatment system, and waste gas generated in the vaporization process is collected and treated.
Preferably, the sulfur heat exchanger adopts a horizontal cylinder, a steam drum is arranged on the cylinder, a low-pressure steam outlet is arranged at the top of the steam drum, and steam coming out from the low-pressure steam outlet can be used for other purposes.
Preferably, the gasification furnace adopts a vertical conical bottom furnace body.
Preferably, the outer wall of the bottom end of the gasification furnace is wound with an induction coil, and the induction coil generates current with certain frequency under the action of a current generator so as to heat the sulfur raw material.
Preferably, the bottom of the gasification furnace is communicated with a slag discharge system.
The invention also aims to provide a method for extracting sulfur by carrying out reduced pressure vaporization on sulfur paste, which applies the device for extracting sulfur by carrying out reduced pressure vaporization on sulfur paste, carries out vacuum pumping on the inside of a furnace body through a vacuum pump, and obtains liquid sulfur by carrying out sulfur vaporization, condensation and purification, and comprises the following steps: 1) vacuumizing the furnace body by adopting a reciprocating vacuum pump; 2) the sulfur raw material enters a gasification furnace to be heated and gasified; 3) the vaporized sulfur enters a sulfur heat exchanger for condensation, superheated water is adopted as a condensing medium in the heat exchanger, and the vaporization temperature of the sulfur after heat exchange is reduced from 444.6 ℃ to within 300 ℃; 4) separating the vapor-liquid mixture generated in the vaporization process by a vapor-liquid separator, and collecting the purified liquid sulfur by a sulfur barrel; 5) the waste gas separated in the vaporization process is discharged after being treated by a tail gas treatment system, the low-pressure steam generated in the steam drum is recycled, and the sulfur slag at the bottom of the vaporization furnace enters a slag discharge system for treatment and recycling.
Compared with the prior art, the invention has the advantages that: the furnace body adopts a vertical surface heating mode, the heat conduction efficiency is high, salt impurities in the sulfur paste sink down without impurity deposition, thermal resistance is not generated, and the overheating phenomenon does not exist.
The gasification furnace adopting the structure of the invention has the advantages of increased heat exchange area, high heat transfer efficiency, reduced vaporization temperature and reduced energy consumption, and solves the problems of low service life and low safety of the gasification furnace caused by high vaporization temperature of the existing gasification furnace.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example one
The utility model provides a sulphur cream decompression vaporization extraction sulphur device, see figure 1, including the vaporizing burner, sulphur heat exchanger, vapour and liquid separator and reciprocating vacuum pump, the top of vaporizing burner sets up the sulphur gas export after sulphur raw materials entry and the vaporization, sulphur gas export and sulphur heat exchanger pipeline intercommunication, sulphur gas condenses in sulphur heat exchanger, thereby obtain the higher liquid sulphur of purity, still be provided with the vapour and liquid export of not complete condensation on the sulphur heat exchanger, this vapour and liquid export and vapour and liquid separator pipeline intercommunication, liquid sulphur is separated out to vapour and liquid separator's bottom, top pipeline intercommunication has reciprocating vacuum pump.
In the embodiment, the purified liquid sulfur outlet of the sulfur heat exchanger and the vapor-liquid separator is communicated with a sulfur barrel for collecting liquid sulfur.
The sulfur barrel and the reciprocating vacuum pump are both communicated with the tail gas treatment system, and waste gas generated in the vaporization process is collected and treated.
This embodiment sulphur heat exchanger adopts horizontal barrel, sets up the steam pocket on the barrel, and the steam pocket top sets up low pressure steam outlet, and the steam that comes out from this low pressure steam outlet can be used as other usage.
The gasification furnace of the embodiment adopts a vertical conical bottom furnace body.
This embodiment the outer wall winding induction coil of gasification burner bottom, induction coil produces the electric current of certain frequency under current generator's effect for realize the heating of sulphur raw materials.
The bottom of the gasification furnace is communicated with a slag discharge system.
Example two
A method for extracting sulfur by sulfur paste reduced pressure vaporization adopts the sulfur paste reduced pressure vaporization sulfur extraction device, a vacuum pump is used for vacuumizing the furnace body, and liquid sulfur is obtained by sulfur vaporization, condensation and purification, and the method comprises the following steps: 1) vacuumizing the furnace body by adopting a reciprocating vacuum pump; 2) the sulfur raw material enters a gasification furnace to be heated and gasified; 3) the vaporized sulfur enters a sulfur heat exchanger for condensation, superheated water is adopted as a condensing medium in the heat exchanger, and the vaporization temperature of the sulfur after heat exchange is reduced from 444.6 ℃ to within 300 ℃; 4) separating the vapor-liquid mixture generated in the vaporization process by a vapor-liquid separator, and collecting the purified liquid sulfur by a sulfur barrel; 5) the waste gas separated in the vaporization process is discharged after being treated by a tail gas treatment system, the low-pressure steam generated in the steam drum is recycled, and the sulfur slag at the bottom of the vaporization furnace enters a slag discharge system for treatment and recycling.
By adopting the gasification furnace with the structure, the gasification temperature of the sulfur is reduced to be within 300 degrees from 444.6 degrees; the corrosion resistance of the equipment is greatly improved, the service life of the equipment is prolonged, and the range of materials which can be used for preparing the gasification furnace is wide; the energy consumption is obviously reduced; the vaporization efficiency is greatly improved, and the production efficiency of the vaporization furnaces with the same specification can be improved by 50%; the probability of environmental protection and safety accidents caused by sulfur steam leakage is greatly reduced.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a sulphur device is drawed in sulphur cream decompression vaporization, a serial communication port, including the vaporizing burner, sulphur heat exchanger, vapour and liquid separator and reciprocating vacuum pump, the top of vaporizing burner sets up the sulphur gas outlet after sulphur raw materials entry and vaporization, sulphur gas outlet and sulphur heat exchanger pipeline intercommunication, sulphur gas condenses in sulphur heat exchanger, thereby obtain the higher liquid sulphur of purity, still be provided with the vapour and liquid export of not complete condensation on the sulphur heat exchanger, this vapour and liquid export and vapour and liquid separator pipeline intercommunication, liquid sulphur is separated out to vapour and liquid separator's bottom, top pipeline intercommunication has reciprocating vacuum pump.
2. The sulfur paste reduced-pressure vaporization extraction device for sulfur according to claim 1, wherein a sulfur barrel is communicated with a purified liquid sulfur outlet of the sulfur heat exchanger and the vapor-liquid separator for collecting liquid sulfur.
3. The sulfur plant according to claim 2, wherein the sulfur barrel and the reciprocating vacuum pump are both connected to a tail gas treatment system.
4. The sulfur device extracted by vaporization of sulfur paste under reduced pressure according to claim 3, wherein the sulfur heat exchanger is a horizontal cylinder, a steam drum is arranged on the cylinder, and a low-pressure steam outlet is arranged at the top of the steam drum.
5. The sulfur paste reduced-pressure vaporization extraction sulfur according to claim 4, wherein the vaporization furnace uses a vertical conical bottom furnace body.
6. The sulfur plant according to claim 5, wherein the outer wall of the bottom end of the vaporizing furnace is wound with an induction coil.
7. The sulfur paste reduced-pressure vaporization extraction sulfur device according to claim 6, wherein the bottom of the vaporization furnace is communicated with a slag discharge system.
8. A process for extracting sulfur by carrying out reduced pressure vaporization on sulfur paste by adopting the device as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps: vacuumizing the furnace body, pumping the crude sulfur into the furnace body, heating for vaporization, and condensing and purifying after vaporization.
9. The process for extracting sulfur by vaporizing sulfur paste under reduced pressure according to claim 8, which comprises the following steps: 1) vacuumizing the furnace body by adopting a reciprocating vacuum pump; 2) the sulfur raw material enters a gasification furnace to be heated and gasified; 3) the vaporized sulfur enters a sulfur heat exchanger for condensation, superheated water is adopted as a condensing medium in the heat exchanger, and the vaporization temperature of the sulfur after heat exchange is reduced from 444.6 ℃ to within 300 ℃; 4) separating the vapor-liquid mixture generated in the vaporization process by a vapor-liquid separator, and collecting the purified liquid sulfur by a sulfur barrel; 5) the waste gas separated in the vaporization process is discharged after being treated by a tail gas treatment system, the low-pressure steam generated in the steam drum is recycled, and the sulfur slag at the bottom of the vaporization furnace enters a slag discharge system for treatment and recycling.
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| CN202111554138.2A CN114014274A (en) | 2021-12-17 | 2021-12-17 | Sulfur paste reduced-pressure vaporization sulfur extraction device and process thereof |
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| CN202111554138.2A CN114014274A (en) | 2021-12-17 | 2021-12-17 | Sulfur paste reduced-pressure vaporization sulfur extraction device and process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116534804A (en) * | 2023-05-31 | 2023-08-04 | 湖南化工设计院有限公司 | Extraction system of high-purity sulfur |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468792A (en) * | 2007-12-28 | 2009-07-01 | 尹小林 | Novel technique for producing sulfur from industrial waste gypsum |
| CN202415159U (en) * | 2012-02-16 | 2012-09-05 | 李清龙 | Device for extracting sulphur from desulfurated sulphur cream |
| CN108101004A (en) * | 2018-02-24 | 2018-06-01 | 广西联源机械化工有限公司 | A kind of production method of insoluble sulfur |
| CN111908430A (en) * | 2020-06-19 | 2020-11-10 | 宁波市化工研究设计院有限公司 | Method for treating solid waste sulfur |
-
2021
- 2021-12-17 CN CN202111554138.2A patent/CN114014274A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101468792A (en) * | 2007-12-28 | 2009-07-01 | 尹小林 | Novel technique for producing sulfur from industrial waste gypsum |
| CN202415159U (en) * | 2012-02-16 | 2012-09-05 | 李清龙 | Device for extracting sulphur from desulfurated sulphur cream |
| CN108101004A (en) * | 2018-02-24 | 2018-06-01 | 广西联源机械化工有限公司 | A kind of production method of insoluble sulfur |
| CN111908430A (en) * | 2020-06-19 | 2020-11-10 | 宁波市化工研究设计院有限公司 | Method for treating solid waste sulfur |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116534804A (en) * | 2023-05-31 | 2023-08-04 | 湖南化工设计院有限公司 | Extraction system of high-purity sulfur |
| CN116534804B (en) * | 2023-05-31 | 2024-05-24 | 湖南化工设计院有限公司 | Extraction system of high-purity sulfur |
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Effective date of registration: 20221019 Address after: 417000 Louxing District, Loudi City, Hunan Province (No. 1, Zhenxing Avenue, Hongjiazhou, Lianyungang) Applicant after: Loudi LIANGANG Zhenxing Metallurgical Material Co.,Ltd. Applicant after: Hunan Daoan Environmental Protection Technology Co.,Ltd. Address before: 410000 room 910, Shuangta International Plaza, No. 258, Section 2, Xiangfu East Road, Jingwanzi street, Yuhua District, Changsha City, Hunan Province Applicant before: Hunan Daoan Environmental Protection Technology Co.,Ltd. |
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Effective date of registration: 20230629 Address after: 417000 Louxing District, Loudi City, Hunan Province (No. 1, Zhenxing Avenue, Hongjiazhou, Lianyungang) Applicant after: Loudi LIANGANG Zhenxing Metallurgical Material Co.,Ltd. Applicant after: Hunan Daohe Environmental Protection Technology Co.,Ltd. Address before: 417000 Louxing District, Loudi City, Hunan Province (No. 1, Zhenxing Avenue, Hongjiazhou, Lianyungang) Applicant before: Loudi LIANGANG Zhenxing Metallurgical Material Co.,Ltd. Applicant before: Hunan Daoan Environmental Protection Technology Co.,Ltd. |