CN202482062U - Device for extracting ammonium thiosulfate and ammonium thiocyanate from desulfurization waste liquid - Google Patents
Device for extracting ammonium thiosulfate and ammonium thiocyanate from desulfurization waste liquid Download PDFInfo
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- CN202482062U CN202482062U CN 201220027196 CN201220027196U CN202482062U CN 202482062 U CN202482062 U CN 202482062U CN 201220027196 CN201220027196 CN 201220027196 CN 201220027196 U CN201220027196 U CN 201220027196U CN 202482062 U CN202482062 U CN 202482062U
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Abstract
The utility model provides a device for extracting ammonium thiosulfate and ammonium thiocyanate from desulfurization waste liquid. The device comprises a first evaporator, a second evaporator, a third evaporator, a crystallizer and a centrifugal machine and is characterized in that the first evaporator, the second evaporator and the third evaporator are provided with an external heater respectively; the third evaporator is divided into two sections, that is, an upper section and a lower section; the upper section is an evaporation section and the lower section is a crystal growth section; the upper section and the lower section are communicated through a pipeline; the third evaporator is connected with the crystallizer; and the crystallizer is connected with the centrifugal machine. The second evaporator and the third evaporator adopt water vapor generated by evaporation of the first evaporator as a heating source; materials at the bottom of the third evaporator is conveyed into the crystallizer through a crystallization pump; crystalline liquid is separated; the separated solid is a product containing the ammonium thiosulfate; and the centrifugal liquid is collected and then is crystallized to obtain a product containing the ammonium thiocyanate. The device has the characteristics of continuous production during operation of extracting salt from desulfurization liquid, low energy consumption, low investment of engineering construction and the like.
Description
Technical field
The utility model belongs to the desulfurization technology field; Specifically; Relate to a kind of liquid that contains ammonium thiosulfate (sodium), ammonium thiocyanide (sodium), ammonium sulfate (sodium), go out the device of ammonium thiosulfate (sodium), ammonium thiocyanide (sodium), ammonium sulfate (sodium) through evaporation, Crystallization Separation by coal gas desulfurization production.
Background technology
At present, by desulfurization waste liquor extraction ammonium thiosulfate, ammonium thiocyanide various technological method for processing are arranged.Comparatively advanced, representative processing unit (plant) is following:
The patent No. of Suzhou Jiuwang Multiple Ammonium Salt Technology Co., Ltd.'s application: 200510095591.6, the utility model patent of " treatment process of processes of coke oven gas desulfurization and decyanation waste water " by name.Through in wastewater for desulfurization and decyanation, adding the gac processing of decolouring; Filter then and obtain clear liquid and waste active carbon, waste active carbon returns coal yard and advances pit kiln, and the clear liquid evaporation under reduced pressure concentrates; Controlling moisture content＜15%, and in 16 hours, accomplish evaporating concentration process.Liquid concentrator is cooled to room temperature and promptly gets the multi-ammonium compound salt solid, and the water vapor in the evaporative process returns the desulfuration and decyanation device and recycles after condensation.
This patent be evaporated to periodical operation, the latent heat of the water vapor of evaporation does not utilize, the heating steam consumption is big, energy consumption is high.Evaporation equipment is the jacketed type heating, and thermo-efficiency is low, and facility investment is big.
The patent No. of Suzhou Hu Guan coke-oven gas disposal of three wastes factory application: 200610031074.7, the utility model patent of " coke(oven)gas ammoniacal liquor liquid-phase catalysis waste water reclamation ammonium thiocyanide and ammonium thiosulfate " by name to processes of coke oven gas desulfurization and decyanation decolouring waste water, is used NH
4CNS-(NH
4)
2S
2O
3-(NH
4)
2SO
4-H
2O saturated multicomponent system altogether carries out concentrating under reduced pressure, makes (NH
4)
2S
2O
3(NH
4)
2SO
4Be solid phase and separate out, slip is mainly contained NH through liquid-solid separation
4First saturated liquid of CNS and mainly contain (NH
4)
2S
2O
3(NH
4)
2SO
4First filter cake, first saturated liquid is carried out crystallization, separate to obtain NH
4CNS, to first filter cake with stripping solution stripping (NH
4)
2S
2O
3And make (NH
4)
2SO
4Become solid phase, stripping slurry is mainly contained (NH through liquid-solid separation
4)
2SO
4Solid second filter cake and mainly contain (NH
4)
2S
2O
3Second saturated liquid, with the second saturated liquid crystallization, isolate (NH
4)
2S
2O
3
This patent mainly is the slip that evaporates to be carried out product purify, and the latent heat of the water vapor of evaporation does not utilize, and the heating steam consumption is big, and energy consumption is high.Evaporation equipment is the jacketed type heating, and thermo-efficiency is low, and facility investment is big.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that exists in the above-mentioned prior art, and a kind of device by desulfurization waste liquor extraction ammonium thiosulfate, ammonium thiocyanide is provided, but this device operate continuously, energy consumption is low, and thermo-efficiency is high, and facility investment is little.
For realizing above-mentioned purpose, the utility model is realized through following technical scheme:
A kind of device that extracts ammonium thiosulfate, ammonium thiocyanide by desulfurization waste liquor; Comprise first vaporizer, second vaporizer, the 3rd vaporizer, mold, whizzer, it is characterized in that described first vaporizer, second vaporizer, the 3rd vaporizer are respectively equipped with external well heater; The 3rd vaporizer is divided into two sections; Epimere is an evaporator section, and hypomere is the crystalline growth section, is communicated with by pipeline between two sections; The 3rd vaporizer is connected with mold, and mold connects whizzer.
Said external well heater can adopt shell and tube, spiral plate type or plate-type heat exchanger.
On described first vaporizer, second vaporizer, the 3rd vaporizer Level Detection element is installed.
On the feed pipe of described first vaporizer, second vaporizer, the 3rd vaporizer variable valve is installed.
Adopt the technological process of said apparatus to be: will be from the doctor solution that contains ammonium thiosulfate, ammonium thiocyanide behind activated carbon filtration of desulfurization system; Send in the first vaporizer circulation water back by transferpump; Material is extracted out after the first external vaporizer well heater indirect heating by recycle pump in first vaporizer; Part is returned in first vaporizer, is that first vaporizer provides evaporation institute heat requirement; Part is sent in second vaporizer by variable valve control according to the material liquid level in second vaporizer.Material is extracted out by recycle pump and is returned in second vaporizer through the second external vaporizer well heater indirect heating rear section in second vaporizer, is that second vaporizer provides evaporation institute heat requirement; Part is sent in the 3rd vaporizer by variable valve control according to the material liquid level in the 3rd vaporizer.Material is extracted out by recycle pump and after external well heater indirect heating, is returned in the 3rd vaporizer in the 3rd vaporizer, is that the 3rd vaporizer provides evaporation institute heat requirement.First vaporizer adopts water vapor or other heating agent as the heating thermal source; Second vaporizer adopts water vapor that first evaporator evaporation produces as the heating thermal source, and the 3rd vaporizer can adopt water vapor that first evaporator evaporation produces or other heating agent as the heating thermal source.The 3rd vaporizer is divided into upper and lower two sections, and epimere is an evaporator section, and hypomere is the crystalline growth section, is communicated with by pipeline between two sections.The 3rd base of evaporator material is pumped in the mold by crystallization according to its material moisture; The crystallization control temperature is carried out crystallization; Crystallized liquid is put into whizzer and is separated; Solid separated is the product that contains ammonium thiosulfate, and centrifugate is collected further crystallization of back, obtains containing the product of ammonium thiocyanide more than 90%.
Temperature of charge in described first vaporizer is controlled at 60-80 ℃, and the temperature of charge after external heater heats is controlled at 65-90 ℃.Temperature of charge in second vaporizer, the 3rd vaporizer is controlled at 60-70 ℃, and absolute pressure is controlled at 0.001-0.01MPa.
This device also is applicable to and uses the processing of yellow soda ash as the desulfurization waste liquor that contains Sulfothiorine, Sodium Thiocyanate 99 of the wet method catalytic oxidation desulfurization generation of alkali source.
Compared with prior art, the beneficial effect of the utility model is:
Evaporation and crystal process has been realized operate continuously; The 3rd vaporizer is provided with evaporator section and crystalline growth section, and crystalline particle is big, is easy to separate; The latent heat of the water vapor of first evaporator evaporation is used for the heating of second vaporizer, the 3rd vaporizer; Reduced the heating medium consumption, reduced the consumption of heat-eliminating medium, energy consumption is low.Evaporation equipment adopts external heater heats, and thermo-efficiency is high, and facility investment is little.
Description of drawings
Fig. 1 is the utility model structural representation.
Among Fig. 1: 1 is pipeline, and 2 are the decolouring liquid bath, and 3 is pump, and 4 is pipeline, and 5 is the first vaporizer recycle pump; 6 is pipeline, and 7 is variable valve, and 8 is first vaporizer, and 9 is liquid level detection device, and 10 is the first vaporizer well heater; 11 is pipeline, and 12 is variable valve, and 13 is second vaporizer, and 14 is pipeline, and 15 is liquid level detection device; 16 is the second vaporizer recycle pump, and 17 is the second vaporizer well heater, and 18 is pipeline, and 19 is variable valve, and 20 is liquid level detection device; 21 is pipeline, and 22 is the 3rd vaporizer, and 23 is the 3rd vaporizer recycle pump, and 24 is the 3rd vaporizer well heater, and 25 is the 3rd evaporator evaporation section; 26 is the 3rd vaporizer crystalline growth section, and 27 is pipe, and 28 are the crystallization pump, and 29 is mold, and 30 for containing the product that ammonium thiosulfate is the master; 31 for containing the product that ammonium thiocyanide is the master, and 32 is condensed fluid, and 33 is condensed fluid, and 34 is water vapor, and 35 is water vapor.
Embodiment
The working process of the utility model is done further to describe through embodiment below in conjunction with Fig. 1.
As shown in Figure 1; A kind of technology and device that extracts ammonium thiosulfate, ammonium thiocyanide by desulfurization waste liquor; Working process is following: from the doctor solution that contains ammonium thiosulfate, ammonium thiocyanide behind activated carbon filtration of desulphurization system, desulfurization liquid bath 2 after pipeline 1 is sent into decolouring is delivered in the inlet tube 6 of the first vaporizer recycle pump 5 by pump 3 through pipeline 4; Variable valve 7 is set, the Liquid level adjusting valve door aperture that detects according to the liquid level detection device of first vaporizer 89 on the pipeline 4.Material is extracted out after the external first vaporizer well heater, 10 indirect heating by recycle pump 5 in first vaporizer 8, and part is returned in first vaporizer 8 through pipeline 11, is that first vaporizer 8 provides evaporation institute heat requirement; Part is sent in second vaporizer 13 through pipeline 14, and variable valve 12 is set on the pipeline 14, the Liquid level adjusting valve door aperture that detects according to the liquid level detection device of second vaporizer 13 15.The first vaporizer well heater 10 can adopt steam or heat conduction wet goods heating agent to heat.
Material is extracted out after the external second vaporizer well heater, 17 indirect heating by the second vaporizer recycle pump 16 in second vaporizer 13, and part is returned in second vaporizer 13 through pipeline 18, is that second vaporizer 13 provides evaporation institute heat requirement; Part is sent in the 3rd vaporizer 22 through pipeline 21, and variable valve 19 is set on the pipeline 21, the Liquid level adjusting valve door aperture that detects according to the liquid level detection device of the 3rd vaporizer 22 20.The second vaporizer well heater 17 adopts the water vapor of first vaporizer, 8 evaporation generations as the heating thermal source.
Material is extracted out after external the 3rd vaporizer well heater 24 indirect heating through the 3rd vaporizer recycle pump 23 by the top of crystalline growth section 26 in the 3rd vaporizer 22, returns in the 3rd vaporizer 22, is that the 3rd vaporizer 22 provides evaporation institute heat requirement; The 3rd vaporizer well heater 24 can adopt water vapor that the evaporation of first vaporizer 8 produces or other heating agent of heat conduction wet goods as the heating thermal source.
The 3rd vaporizer is divided into upper and lower two sections; Epimere 25 is an evaporator section; Be used for evaporating the moisture of doctor solution, hypomere 26 is the crystalline growth section, and the crystallized liquid that contains after epimere moisture partly evaporates gets into the hypomere bottom pipe 27 between two sections; In containing the process of crystalline liquid come-up, the sinking of growing up of crystallization crystal.Sent in the mold 29 by crystallization pump 28, the crystallization control temperature is carried out crystallization, and crystallized liquid is through spinning, and solid separated is the product 30 that contains ammonium thiosulfate, and centrifugate is collected further crystallization of back, obtains containing the product 31 of ammonium thiocyanide more than 90%.
The water vapor of first evaporator evaporation returns desulphurization system through the water vapor 34 of condensed liquid 32,33 of the second vaporizer well heater, the 3rd vaporizer well heater and circulating liquid heat exchange and the generation of second evaporator evaporation, the water vapor 35 that the 3rd evaporator evaporation produces after the condensation cooling.
Temperature of charge in first vaporizer 8 is controlled at 60-80 ℃, and the temperature of charge after external well heater 10 heating is controlled at 65-90 ℃.Temperature of charge in second vaporizer 13, the 3rd vaporizer 22 are controlled at 60-70 ℃, and absolute pressure is controlled at 0.001-0.01MPa.Material temperature is controlled at 55-65 ℃ in the mold 29.
Claims (4)
1. device that extracts ammonium thiosulfate, ammonium thiocyanide by desulfurization waste liquor; Comprise first vaporizer, second vaporizer, the 3rd vaporizer, mold, whizzer, it is characterized in that described first vaporizer, second vaporizer, the 3rd vaporizer are respectively equipped with external well heater; The 3rd vaporizer is divided into two sections; Epimere is an evaporator section, and hypomere is the crystalline growth section, is communicated with by pipeline between two sections; The 3rd vaporizer is connected with mold, and mold connects whizzer.
2. a kind of device by desulfurization waste liquor extraction ammonium thiosulfate, ammonium thiocyanide according to claim 1 is characterized in that said external well heater can adopt shell and tube, spiral plate type or plate-type heat exchanger.
3. a kind of device by desulfurization waste liquor extraction ammonium thiosulfate, ammonium thiocyanide according to claim 1 is characterized in that, on described first vaporizer, second vaporizer, the 3rd vaporizer Level Detection element is installed.
4. a kind of device by desulfurization waste liquor extraction ammonium thiosulfate, ammonium thiocyanide according to claim 1 is characterized in that, on the feed pipe of described first vaporizer, second vaporizer, the 3rd vaporizer variable valve is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220027196 CN202482062U (en) | 2012-01-20 | 2012-01-20 | Device for extracting ammonium thiosulfate and ammonium thiocyanate from desulfurization waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220027196 CN202482062U (en) | 2012-01-20 | 2012-01-20 | Device for extracting ammonium thiosulfate and ammonium thiocyanate from desulfurization waste liquid |
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| Publication Number | Publication Date |
|---|---|
| CN202482062U true CN202482062U (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220027196 Expired - Fee Related CN202482062U (en) | 2012-01-20 | 2012-01-20 | Device for extracting ammonium thiosulfate and ammonium thiocyanate from desulfurization waste liquid |
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| CN (1) | CN202482062U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355322A (en) * | 2014-12-02 | 2015-02-18 | 成都华西堂投资有限公司 | System for preparing ammonium salt from fume cleaning waste liquid |
| US20180251375A1 (en) * | 2015-12-30 | 2018-09-06 | Tessenderlo Kerley, Inc. | Sulfur dioxide scrubbing system and process for producing potassium products |
| CN112591969A (en) * | 2020-11-06 | 2021-04-02 | 鞍钢集团工程技术有限公司 | High-efficiency energy-saving desulfurization liquid salt extraction process and device |
-
2012
- 2012-01-20 CN CN 201220027196 patent/CN202482062U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355322A (en) * | 2014-12-02 | 2015-02-18 | 成都华西堂投资有限公司 | System for preparing ammonium salt from fume cleaning waste liquid |
| US20180251375A1 (en) * | 2015-12-30 | 2018-09-06 | Tessenderlo Kerley, Inc. | Sulfur dioxide scrubbing system and process for producing potassium products |
| US10472238B2 (en) * | 2015-12-30 | 2019-11-12 | Tessenderio Kerley, Inc. | Sulfur dioxide scrubbing system and process for producing potassium products |
| CN112591969A (en) * | 2020-11-06 | 2021-04-02 | 鞍钢集团工程技术有限公司 | High-efficiency energy-saving desulfurization liquid salt extraction process and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20160120 |
|
| EXPY | Termination of patent right or utility model |