CN204873877U - Sour recovery system of purification of sulfur waste who contains high concentration ferrous sulfate - Google Patents
Sour recovery system of purification of sulfur waste who contains high concentration ferrous sulfate Download PDFInfo
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- CN204873877U CN204873877U CN201520571867.2U CN201520571867U CN204873877U CN 204873877 U CN204873877 U CN 204873877U CN 201520571867 U CN201520571867 U CN 201520571867U CN 204873877 U CN204873877 U CN 204873877U
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- recovery system
- sulfuric acid
- storage tank
- membrane separation
- purification
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Abstract
The utility model discloses a sour recovery system of purification of sulfur waste who contains high concentration ferrous sulfate, it includes spent acid storage tank, cooling crystallizer, centrifugal separator and membrane separation device to purify recovery system, the spent acid storage tank passes through centrifugal pump and cooling crystallizer intercommunication, cooling crystallizer and centrifugal separator intercommunication, centrifugal separator and membrane separation device intercommunication, membrane separation device and spent acid storage tank intercommunication. The utility model has the advantages of being simple in structure and convenient in operation, the energy consumption is low, simultaneously recovering sulfuric and ferrous sulfate crystal, difficultly block up, can long period run, high, the nos three wastes production of sulphuric acid purity, have good economic benefits and environmental protection social.
Description
Technical field
The utility model relates to waste acidity recovery field, is specifically related to a kind of Waste Sulfuric Acid purification-recovery system containing high-concentration sulfuric acid ferrous iron.
Background technology
In spent acid, sulfuric acid massfraction is generally 15 ~ 25%, this spent acid is as needed discharge, the method of neutralizing treatment need be carried out by adding basic agent, not only cause the waste of a large amount of soda acid materials, a large amount of ferrous precipitation things simultaneously produced in N-process cause very large difficulty to subsequent disposal work; Acid-spending strength is low simultaneously, and utility value is low, therefore needs to concentrate spent acid in reuse, but the ferrous sulfate salt pair waste acid recycling in spent acid causes larger difficulty.
At present, waste acid concentration mainly adopts sulphuric acid concentration device, this device in sulphuric acid concentration process, along with sulfuric acid concentration increase, the solubleness of ferrous sulfate in sulfuric acid reduces, thus crystallization, this crystal can cause sulphuric acid concentration device and interchanger blocking, causes device cannot long-term operation, concentration technology is damaged, in the sulfuric acid of simultaneously concentration and recovery, still have and dissolve ferrous sulfate and exist, sulfuric acid purity is lower.
Utility model content
The utility model in order to solve the problem, thus provides a kind of Waste Sulfuric Acid purification-recovery system containing high-concentration sulfuric acid ferrous iron and recovery process.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of Waste Sulfuric Acid purification-recovery system containing high-concentration sulfuric acid ferrous iron, described purification-recovery system comprises spent acid storage tank, cooling crystallizer, whizzer and membrane separation unit, described spent acid storage tank is communicated with cooling crystallizer by impeller pump, described cooling crystallizer is communicated with whizzer, described whizzer liquid-phase outlet is communicated with membrane separation unit, and described membrane separation unit dope outlet is communicated with spent acid storage tank.
In a preferred embodiment of the present utility model, described membrane separation unit is nanofiltration membrane.
In a preferred embodiment of the present utility model, described whizzer rear end is provided with interchanger.
By technique scheme, the beneficial effects of the utility model are:
The utility model structure is simple, easy to operate, energy consumption is low, can simultaneously reclaim(ed) sulfuric acid and ferrous sulfate crystal, not easily block, can long-term operation, sulfuric acid purity high, without three wastes generation, there is good economic benefit and environmental protection social benefit.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Embodiment
The technique means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See Fig. 1, the Waste Sulfuric Acid purification-recovery system containing high-concentration sulfuric acid ferrous iron that the utility model provides, it is made up of spent acid storage tank 100, cooling crystallizer 200, whizzer 300 and membrane separation unit 400.
Spent acid storage tank 100, it is for storing spent acid, and to be delivered in cooling crystallizer 200 by spent acid by impeller pump and to carry out crystallisation by cooling.
Cooling crystallizer 200, it is communicated with spent acid storage tank 100, and its inside is provided with circulated refrigerated water, and it is the spent acid crystallisation by cooling for being transported by spent acid storage tank 100, and the solid-liquid two-phase after crystallization is delivered in whizzer 300.
Whizzer 300, it is connected with cooling crystallizer 200, it is that material for being transported by cooling crystallizer 200 carries out solid-liquid separation, iron vitriol crystal in spent acid crystallization is separated with liquid phase, by crystal retrieving arrangement, iron vitriol crystal is reclaimed, by interchanger, the liquid phase separated is heated up after whizzer 300, and the liquid phase after heating up is delivered in membrane separation unit 400.
Membrane separation unit 400, it is that liquid phase for being transported by whizzer 300 is carried out separation and concentrated, and it is specially nanofiltration membrane, and it can by the sulfuric acid in liquid phase and Fe
2+be separated, the sulfuric acid separated is reclaimed by sulphuric acid recovery device by membrane separation unit 400, is delivered in spent acid storage tank 100 by other dopes separated, and continues to repeat above-mentioned steps, until iron vitriol crystal and sulfuric acid reclaim completely.
Cooperatively interacting by said apparatus, iron vitriol crystal and sulfuric acid can reclaim by native system completely, and organic efficiency is very high.
Here is concrete operation step of the present utility model:
(1) spent acid is delivered in spent acid storage tank 100 stores;
(2) spent acid of its inside is delivered in cooling crystallizer 200 by impeller pump by spent acid storage tank 100, circulated refrigerated water in cooling crystallizer is by spent acid crystallisation by cooling, and the spent acid after crystallization is delivered in whizzer 300 and carries out solid-liquid separation by cooling crystallizer 200;
(3) spent acid after crystallization is isolated iron vitriol crystal and liquid phase by whizzer 300, isolated iron vitriol crystal is reclaimed, by isolated liquid phase after interchanger heats up, be delivered in membrane separation unit 400 that to carry out separations concentrated;
(4) membrane separation unit 400 is by the sulfuric acid in liquid phase and Fe
2+be separated, the sulfuric acid separated is reclaimed by sulphuric acid recovery device, the dope separated is delivered in spent acid storage tank and continues to repeat above-mentioned steps, until iron vitriol crystal and sulfuric acid reclaim completely.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the Waste Sulfuric Acid purification-recovery system containing high-concentration sulfuric acid ferrous iron, it is characterized in that, described purification-recovery system comprises spent acid storage tank, cooling crystallizer, whizzer and membrane separation unit, described spent acid storage tank is communicated with cooling crystallizer by impeller pump, described cooling crystallizer is communicated with whizzer, described whizzer liquid-phase outlet is communicated with membrane separation unit, and described membrane separation unit dope outlet is communicated with spent acid storage tank.
2. a kind of Waste Sulfuric Acid purification-recovery system containing high-concentration sulfuric acid ferrous iron according to claim 1, it is characterized in that, described membrane separation unit is nanofiltration membrane.
3. a kind of Waste Sulfuric Acid purification-recovery system containing high-concentration sulfuric acid ferrous iron according to claim 1, it is characterized in that, described whizzer rear end is provided with interchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571867.2U CN204873877U (en) | 2015-07-31 | 2015-07-31 | Sour recovery system of purification of sulfur waste who contains high concentration ferrous sulfate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571867.2U CN204873877U (en) | 2015-07-31 | 2015-07-31 | Sour recovery system of purification of sulfur waste who contains high concentration ferrous sulfate |
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| CN204873877U true CN204873877U (en) | 2015-12-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152229A (en) * | 2015-07-31 | 2015-12-16 | 上海安赐机械设备有限公司 | High-density ferrous sulphate-containing waste sulfuric acid purification and recovery system and recovery process thereof |
| CN107539959A (en) * | 2017-08-25 | 2018-01-05 | 金川集团股份有限公司 | A kind of sulfuric acid waste reclaiming clean device |
| CN107986244A (en) * | 2017-12-11 | 2018-05-04 | 珠海绿水环保科技有限公司 | A kind of recovery method of the Waste Sulfuric Acid of metal ion |
-
2015
- 2015-07-31 CN CN201520571867.2U patent/CN204873877U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152229A (en) * | 2015-07-31 | 2015-12-16 | 上海安赐机械设备有限公司 | High-density ferrous sulphate-containing waste sulfuric acid purification and recovery system and recovery process thereof |
| CN107539959A (en) * | 2017-08-25 | 2018-01-05 | 金川集团股份有限公司 | A kind of sulfuric acid waste reclaiming clean device |
| CN107986244A (en) * | 2017-12-11 | 2018-05-04 | 珠海绿水环保科技有限公司 | A kind of recovery method of the Waste Sulfuric Acid of metal ion |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Patentee after: SHANGHAI ANHORN ENVIRONMENTAL TECHNOLOGY CO., LTD. Address before: 201201 Shanghai, Pudong New Area Jin Tang Road, No. 2, block B, 145 Patentee before: Shanghai Anhorn Mechanical Equipment Co., Ltd. |