CN204874165U - System for salt content in reduction desulfurization waste liquid - Google Patents
System for salt content in reduction desulfurization waste liquid Download PDFInfo
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- CN204874165U CN204874165U CN201520502161.0U CN201520502161U CN204874165U CN 204874165 U CN204874165 U CN 204874165U CN 201520502161 U CN201520502161 U CN 201520502161U CN 204874165 U CN204874165 U CN 204874165U
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Abstract
The utility model discloses a system for salt content in reduction desulfurization waste liquid, including doctor solution storage tank, heat exchanger, ammonia still process cauldron, decoloration jar, filter A, metering tank, oxidation tower, concentrated cauldron A, concentrated cauldron A's material export is connected with filter B, filter B's material export and regulation cauldron are connected, the material export of adjusting the cauldron lets in the crystallization kettle, still including the centrifugal separator, dissolving tank, pressure filter and the concentrated cauldron B that are used for solid -liquid separation. The system of this adaptability can be used for handling the desulfurization waste liquid, reduces salt content wherein. The utility model discloses a corresponding technology of with a system can reduce saline content in the desulfurization waste liquid, especially can extract out with the ammonium thiocyanate in the desulfurization waste liquid, ammonium sulfate and sulphur, not only can make desulfurization waste liquid cyclic utilization, can retrieve saline material in addition, has increased the performance of enterprises.
Description
Technical field
The present invention relates to the treatment unit of industrial effluent, be specifically related to a kind of system reducing saltiness in desulfurization waste liquor.
Background technology
Side reaction is there is in wet desulphurization when removing the hydrogen sulfide in coal gas, prussic acid, the salts such as a large amount of ammonium thiocyanates, ammonium thiosulfate are generated in doctor solution, secondary salt content reaches 400g/L, greatly reduces desulfuration efficiency, causes wet desulphurization postcure hydrogen richness to rise to 500 ~ 1200mg/Nm
3.For guaranteeing that chemical plant coal gas methyl alcohol is normally produced, workshop section frequently takes replacing seven baskets of formula fine de-sulfur normal temperature iron oxide fillers to reduce hydrogen sulfide content, increases production run cost.
Need the desulfurization waste liquor of discharge, it is comparatively serious pollutent, some coal chemical enterprises adopt and are sprayed onto on coal yard at present, mix in coking coal, such result not only increases the equipment corrosion of process of coking, add the burden of coking desulfurization system, and waste liquid mixes in coking coal not easily to accomplish to stir and trickle and permeates the ground in water, causes water pollution.More coal chemical enterprise takes evaporate to dryness desulfurization waste liquor moisture to obtain the method for mixed salt, and its mixed salt can be used as the raw material in some chemical plant, realizes comprehensive utilization of resources.
Secondly desulfurization waste liquor contains sulfur hydrogen anion ion etc., has powerful sterilizing ability, cannot enter biochemical system process.According to environmental protection and Production requirement, directly discharge if do not process desulfurization waste liquor, can pollution of waterhead be caused, worsen ecotope, cause environmental pollution accident.
Utility model content
The purpose of this utility model is to provide a kind of system that can reduce salts contg in desulfurization waste liquor.
For reaching above-mentioned purpose, the technical scheme that the utility model adopts is: provide a kind of system reducing saltiness in desulfurization waste liquor, comprise
For storing the doctor solution storage tank of desulfurization waste liquor;
Doctor solution storage tank is communicated with the material inlet of interchanger by pump, and the material outlet of interchanger is communicated with the material inlet of ammonia still process still;
The material outlet of ammonia still process still is connected with bleacher, and the material outlet of bleacher is connected with strainer A;
The material outlet of strainer A is connected with test tank, and the material outlet of this test tank is communicated with oxidizing tower;
The material outlet of oxidizing tower is communicated with concentration kettle A, and the material outlet of concentration kettle A is connected with filter B;
The material outlet of filter B is connected with adjustment still; The material outlet of still is regulated to pass into crystallization kettle;
Also comprise for the whizzer of solid-liquid separation, dissolving tank, pressure filter and concentration kettle B.
In optimal enforcement example of the present utility model, the gas discharge outlet of ammonia still process still is connected with ammonia recycling device.
In sum, the utility model has the following advantages:
System of the present utility model coordinates corresponding technique, the content of salt in desulfurization waste liquor can be reduced, particularly the ammonium thiocyanate in desulfurization waste liquor, ammonium sulfate and sulphur can be extracted, not only can make desulfurization waste liquor recycle, and can salts substances be reclaimed, add the performance of enterprises.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model;
Fig. 2 is the schema of the utility model process matched therewith.
Wherein, 1, doctor solution storage tank; 2, interchanger; 3, ammonia still process still; 4, bleacher; 5, strainer A; 6, test tank; 7, oxidizing tower; 8, concentration kettle A; 9, filter B; 10, still is regulated; 11, crystallization kettle; 12, whizzer; 13, dissolving tank; 14, pressure filter; 15, concentration kettle B; 16, whizzer.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
In an embodiment of the present utility model, as shown in Figure 1, provide a kind of system reducing saltiness in desulfurization waste liquor, comprise doctor solution storage tank 1, interchanger 2, ammonia still process still 3, bleacher 4, strainer, test tank 6, oxidizing tower 7, concentration kettle, adjustment still 10, crystallization kettle 11, whizzer, dissolving tank 13 and pressure filter 14.
Doctor solution storage tank 1 is for storing desulfurization waste liquor; Doctor solution storage tank 1 is communicated with by the material inlet of pump with interchanger 2, and the material outlet of interchanger 2 is communicated with the material inlet of ammonia still process still 3; The material outlet of ammonia still process still 3 is connected with bleacher 4, and the material outlet of bleacher 4 is connected with strainer A5; The material outlet of strainer A5 is connected with test tank 6, and the material outlet of this test tank 6 is communicated with oxidizing tower 7.The material outlet of oxidizing tower 7 is communicated with concentration kettle A8, and the material outlet of concentration kettle A8 is connected with filter B 9; The material outlet of filter B 9 is connected with adjustment still 10; The material outlet of still 10 is regulated to pass into crystallization kettle 11.
The utility model also comprises for the whizzer of solid-liquid separation, dissolving tank 13, pressure filter 14 and concentration kettle B15.The solid-liquid that whizzer may be used for crystallization kettle or concentration kettle to carry out crystallization technique is separated, and dissolving tank 13 can separated and dissolved solid out, carries out secondary treatment.
In addition, the gas discharge outlet of ammonia still process still is connected with ammonia recycling device, and ammonia recycling device comprises condenser and ammonia vessel, can reclaim after ammonia cooling.Regulate between still 10 and crystallization kettle 11 and can also be provided with accurate pressure filter, can filtering partial impurities.In addition, the utility model also comprises the raw material tank for storing mother liquor.
Principle of work of the present utility model is as follows:
A, the desulfurization waste liquor generated collected enter doctor solution storage tank 1 through desulfurization process, heating through being pumped into interchanger 2, then passing into by doctor solution ammonia still process in ammonia still process still 3, removing volatile ammonia wherein.The ammonia that ammonia still process still 3 top generates is cooled to ammoniacal liquor flows into strong aqua storage pond through interchanger, condenser, delivers to the remained ammonia groove that desulfurization process supplements doctor solution alkali source or drum cooling working procedure.
The ammonia doctor solution that removes after B, ammonia still process terminate passes in bleacher 4, adds activated carbon decolorizing and becomes faint yellow.Filter through being pumped into activated charcoal filter A.Then in test tank 6, adding MTS, by being pumped into oxidizing tower 7 after mixing, passing into steam high temperature oxidation, obtain being oxidized clear liquid.
Coal yard is sent in Activated carbon waste entrucking in C, strainer A5, and oxidation clear liquid flows automatically to oxidation clear liquid groove, concentrates with being pumped into concentration kettle A8, then sends into filter B 9 and filters, and the concentrated solution filtered is squeezed into and regulated still 10 to regulate.
Clear liquid after D, adjustment enters sulphur cyanogen crystallization kettle 11 and uses water at low temperature crystallisation by cooling, and the solidliquid mixture after condensing crystal is separated through being pumped in sulphur cyanogen whizzer 12, and sells outside isolated ammonium thiocyanate pack, liquid returns doctor solution storage tank 1.
The ammonium sulfate filtered out and ammonium thiosulfate mixture are after dissolving tank 13 dissolves, most of ammonium thiosulfate heated oxide is become ammonium sulfate, add the further sulfur oxide ammonium thiosulfate of pressurized air, and add activated carbon decolorizing, after the sulphur that pressure filter 14 is isolated wherein, enter condensing crystal in concentration kettle B15, then through being pumped in whizzer 16, isolate that ammonium sulfate solids pack is outer sells, sulphur ammonium concentration kettle B15 upper gas through overcooling laggard enter weak ammonia storage send into air blast operation remained ammonia groove.Mother liquor after sulphur ammonium centrifuge is from flowing in raw material tank.
The desulfurization waste liquor of the present embodiment is oxidized after except ammonia decolouring, by the reducing substances oxidation in desulfurization waste liquor, and then carry out concentrating and separating, crystal after regulating, can be made to separate out better effects if, and reductibility ammonia can be allowed to change into ammonium salt, improve the rate of recovery of ammonium salt.
Through peroxidation after the ammonium sulfate of the present embodiment and thiosulfuric acid blended solid dissolve, the generation of ammonium sulfate can be impelled, reduce salt kind further, reduce separating difficulty, improve the precision of ammonium sulfate after being separated.
Although describe in detail embodiment of the present utility model by reference to the accompanying drawings, should not be construed as the restriction of the protection domain to this patent.In the scope described by claims, the various amendment that those skilled in the art can make without creative work and distortion still belong to the protection domain of this patent.
Claims (5)
1. reduce a system for saltiness in desulfurization waste liquor, it is characterized in that: comprise
For storing the doctor solution storage tank of desulfurization waste liquor;
Described doctor solution storage tank is communicated with the material inlet of interchanger by pump, and the material outlet of interchanger is communicated with the material inlet of ammonia still process still;
The material outlet of described ammonia still process still is connected with bleacher, and the material outlet of bleacher is connected with strainer A;
The material outlet of described strainer A is connected with test tank, and the material outlet of this test tank is communicated with oxidizing tower;
The material outlet of described oxidizing tower is communicated with concentration kettle A, and the material outlet of concentration kettle A is connected with filter B;
The material outlet of described filter B is connected with adjustment still; The material outlet of still is regulated to pass into crystallization kettle;
Also comprise for the whizzer of solid-liquid separation, dissolving tank, pressure filter and concentration kettle B.
2. the system as claimed in claim 1, is characterized in that: the gas discharge outlet of described ammonia still process still is connected with ammonia recycling device.
3. system as claimed in claim 2, is characterized in that: described ammonia recycling device comprises condenser and ammonia vessel.
4. the system as claimed in claim 1, is characterized in that: be also provided with accurate pressure filter between described adjustment still and crystallization kettle.
5. the system as claimed in claim 1, is characterized in that: also comprise the raw material tank for storing mother liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520502161.0U CN204874165U (en) | 2015-07-13 | 2015-07-13 | System for salt content in reduction desulfurization waste liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520502161.0U CN204874165U (en) | 2015-07-13 | 2015-07-13 | System for salt content in reduction desulfurization waste liquid |
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| CN204874165U true CN204874165U (en) | 2015-12-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776400A (en) * | 2016-03-09 | 2016-07-20 | 北京富海天环保科技有限公司 | Equipment and method for guaranteeing decolorizing efficiency in process of extracting salt from coking desulfurization waste solution |
| CN105800828A (en) * | 2016-04-27 | 2016-07-27 | 滨海明鸿精细化工有限公司 | Method for recycling sodium pyrithione in waste water |
| CN115583659A (en) * | 2022-10-28 | 2023-01-10 | 河南殷之都环保科技有限公司 | Method for extracting ammonium sulfate from coking desulfurization waste liquid |
-
2015
- 2015-07-13 CN CN201520502161.0U patent/CN204874165U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776400A (en) * | 2016-03-09 | 2016-07-20 | 北京富海天环保科技有限公司 | Equipment and method for guaranteeing decolorizing efficiency in process of extracting salt from coking desulfurization waste solution |
| CN105800828A (en) * | 2016-04-27 | 2016-07-27 | 滨海明鸿精细化工有限公司 | Method for recycling sodium pyrithione in waste water |
| CN105800828B (en) * | 2016-04-27 | 2019-07-23 | 滨海明鸿精细化工有限公司 | The recovery method of sodium pyrithione in a kind of waste water |
| CN115583659A (en) * | 2022-10-28 | 2023-01-10 | 河南殷之都环保科技有限公司 | Method for extracting ammonium sulfate from coking desulfurization waste liquid |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Dazhou City, Sichuan Province, 635000 River Road District No. 25 Patentee after: Sichuan Daxing Energy Co., Ltd Address before: No.25 Xihe Road, Tongchuan District, Dazhou City, Sichuan Province Patentee before: SICHUAN DAXING ENERGY Co.,Ltd. |
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| CP03 | Change of name, title or address |