CN1369574A - Process and equipment for extracting useful substances from use acid - Google Patents
Process and equipment for extracting useful substances from use acid Download PDFInfo
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- CN1369574A CN1369574A CN 01103772 CN01103772A CN1369574A CN 1369574 A CN1369574 A CN 1369574A CN 01103772 CN01103772 CN 01103772 CN 01103772 A CN01103772 A CN 01103772A CN 1369574 A CN1369574 A CN 1369574A
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- acid solution
- spent acid
- ferrous sulfate
- useful matter
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Abstract
A process for extracting useful substances from waste acid features that a sulfuric acid displacement method is used to react with ferrous chloride in waste acid liquid, resulting in ferrous sulfate and hydrochloric acid, and the ozone is introduced to said ferrous chloride to generate iron sulfate. The resultant hydrochloric acid and iron sulfate and be further used in different fields.
Description
The present invention relates to a kind of spent acid treatment process and device, particularly a kind of manufacture method and device that in spent acid solution, extracts useful matter.
Iron and steel places the unavoidable meeting of air that oxidizing reaction (promptly general said getting rusty) takes place, and generates ferric oxide in the surface of iron and steel.Industrial general use hydrochloric acid cleans the steel surface of oxidation, because the hydrochloric acid expense is more cheap, so be used in a large number in this field, but its companion and a large amount of spent acid solutions that produce are handled the greatest problem that promptly becomes in environmental protection one ring, about 330,000 tons of the spent acid solution that present domestic iron and steel industry is produced every year, wherein the treatment unit of spent acid solution and processing mode have spraying to burn training method, direct several methods such as chlorination oxidation style, resin adsorption method, vacuum distillation method and sulfuric acid substitution method; Details are as follows:
1, training method and device thereof are burnt in spraying: it adopts fluidization to burn training method equipment investment cost height, is applicable to bigger spent acid treatment scale, handles the spent acid amount and needs just may have the investment feasibility greater than 1,000 ton/month; Because of producing the price height of resource product ferric oxide, so the investment feasibility also may be high relatively; But wherein when spraying burning training technology, then need to consider the nozzle problem in addition, not only gordian technique is difficult to break through, and manufacturing cost is very high.
2, direct chlorination oxidation style and device thereof: the technical industrial safety problem that notes the chlorination reaction member, the chlorination iron rule that is produced need be considered marketing problem, because of iron(ic) chloride in domestic be easy situation, so use this law on industry and can't reclaim its benefit.
3, resin adsorption method/diffusion dialysis method and device thereof: only can reclaim hydrochloric acid in spent acid solution, remaining spent acid solution then can't re-use, so can't really solve the problem of spent acid solution.
4, vacuum distillation method and device thereof: when handling its spent acid solution problem, can produce hydrochloric acid and iron protochloride, but its temperature of reaction being too high, be to cause equipment cost to increase, and iron protochloride only uses on waste water, so not extensive on the use field at present.
Therefore, how a kind of manufacture method and the device that extract useful matter in spent acid solution of novelty are proposed at the problems referred to above, not only can solve the problem of a large amount of spent acid solutions, can produce the by product of high economic worth again, and its equipment investment cost can be lower, recyclable again hydrochloric acid is supplied with and is re-used, be not to use for a long time the thing that the person eagerly looks forward to and this creator misses always always, and this creator is based on the research of engaging in the chemical industry related products for many years, exploitation, and sale practical experience, it is the idea of thinking and improveing, poor its people's expertise, exhausted research and design in many ways, special topic is inquired into, finally work out a kind of manufacture method that in spent acid solution, produces ferric sulfate, to address the above problem.
Main purpose of the present invention is to provide a kind of manufacture method and device that extracts useful matter in spent acid solution, and this device can produce the ferric sulfate and the ferrous sulfate of high economic value, and can reclaim the hydrochloric acid of spent acid solution.
Secondary objective of the present invention is to provide a kind of manufacture method and device that extracts useful matter in spent acid solution, its product economic worth height, the equipment cost that can recoup the investment fast.
Another purpose of the present invention is to provide a kind of manufacture method and device that extracts useful matter in spent acid solution, is to solve the spent acid solution that is produced when cleaning iron and steel.
Above-mentioned purpose of the present invention is realized by following technical scheme.
A kind of device that extracts useful matter in spent acid solution is characterized in that including:
One reactor, the one side connects the absorption tower by pipeline, and opposite side connects settling bath by pipeline, and it mainly is to load spent acid solution and sulfuric acid, and carries out in spent acid solution and the vitriolic reaction at this reactor;
One absorption tower is connected in the opposite side of this reactor by a pipeline, absorbs and collects spent acid solution and react the hydrochloric acid that the back produces with sulfuric acid, and receive the dilute acid bath that collects diluted acid by pipeline;
One settling bath can be connected in the opposite side of reactor by a pipeline, can collect spent acid solution and sulfuric acid and react the ferrous sulfate that the back generates, and this device can be removed the acid substance that is contained in the ferrous sulfate;
One water eliminator is connected in this settling bath, is water molecules removal contained in the ferrous sulfate is got at least one ferrous sulfate powder; And
One ozone reactor is connected in this settling bath, and imports at least one ozone, and oxidation in the ferrous sulfate can be generated ferric sulfate with reaction.
Except that above-mentioned essential features, in specific implementation process, also can replenish following technology contents:
Be connected to one on the reactor and drive the blowing air device of hydrochloric acid gas to the absorption tower.
Between reactor and absorption tower, be connected to a mist eliminator that iron ion is removed.
Wherein be provided with a water washing device in this settling bath.
A kind of manufacture method of extracting useful matter in spent acid solution is characterized in that:
Spent acid solution and sulfuric acid are inserted in the reactor, make the iron protochloride reaction in sulfuric acid and the spent acid solution,, contain remaining acid in this ferrous sulfate to generate ferrous sulfate:
The ferrous sulfate that will contain remaining acid send settling bath to remove remaining acid contained in it, send again water eliminator with the moisture that is contained in it remove satisfy the ferrous sulfate powder;
Ferrous sulfate is carried out oxidizing reaction obtain ferrum sulfuricum oxydatum solutum in ozone reactor.
The manufacture method of useful matter should be in spent acid solution, extracted, except that above-mentioned essential features, in specific implementation process, also following technology contents can be replenished:
Wherein the sulfuric acid concentration of this spent acid solution and sulfuric acid reaction is 70%--93%.
When wherein this spent acid solution and vitriolic react, be the product that is blown into air driven gaseous state shape with a blower.
Wherein this bubbling air is hydrochloric acid and water vapour and iron with the product of the gaseous state shape of drive.
Wherein being to use filtering mode that the hydrochloric acid of gaseous state shape and the iron in the water vapour are given removes.
Wherein this spent acid solution and vitriolic working reaction temperature are 72--92 ℃.
Wherein this is the tart ferrous sulfate, is to be removed acidity by water washing device flushing ferrous sulfate with water.
Acid solution after wherein this ferrous sulfate cleans then is back in spent acid solution and the vitriolic reactive tank.
Wherein the oxidizing reaction of ferrous sulfate is to add ozone.
The invention has the advantages that:
Via said apparatus and method, industrial a large amount of spent acid solution can be resolved into the product of economic worth, abraum salt acid can promote its concentration becomes useful hydrochloric acid, supply the usefulness of industrial cleaning iron and steel again, and ferric sulfate and ferrous sulfate can be used in dyeing and finishing industry, leather industry, wastewater treatment, solid polymerization water purification agent and sewage-treating agent, can reduce the investment goods cost through the product of high economic worth.
Further understand and understanding for constitutional features of the present invention and the effect reached are had, careful assistant describes in detail as the back with the preferred embodiment conjunction with figs.:
Description of drawings:
Fig. 1 is the structural representation for a preferred embodiment of the present invention
At first, see also Fig. 1, as shown in the figure, at first be to contain spent acid solution that concentration can be abraum salt acid 5% and iron protochloride 11% and concentration in the 70%-90% sulfuric acid adding reactor chamber 10, be under 80-90 ℃ the situation in service temperature, iron protochloride and sulfuric acid will produce reaction and generate ferrous sulfate and hydrochloric acid, and 5% mixed in hydrochloric acid in the hydrochloric acid of this stylish generation and the spent acid solution is used the concentration that improves whole hydrochloric acid.
Because it is that gaseous state exists for hydrochloric acid of one of iron protochloride and sulfuric acid reaction generation product and water vapour, drive air-flow with hair-dryer 60 and link to absorption tower 70 through a pipeline, it produces concentration is that 21% hydrochloric acid concentrates on dilute acid bath 80, and between reactor 10 and absorption tower 70, have one to remove fog 50, it is separated removal with the iron in the gaseous state, use the purity that improves hydrochloric acid, and 21% hydrochloric acid behind the higher concentration that is so far produced can reclaim and re-use in cleaning industries such as general iron and steel industry, to clean the ferric oxide of steel surface.
On the other hand, a ferrous sulfate of iron protochloride and sulfuric acid reaction generation product will be led in the settling bath 20 and wash action, because it contains some acidity, so must remove through the water wash procedure and with the acid solution of remnants.Acid solution after the washing can come back in the reactor 10 to carry out reclaimer again through a pipeline more in the present invention, to carry out separating step through water eliminator 30 and water again and washed the ferrous sulfate of handling, so can get the powder of ferrous sulfate, can become the present invention need one of product.And the ferrous sulfate of wet pie, also can add entry again and feed ozone in ozone reactor 40 to carry out oxidizing reaction, make its ferrous sulfate be oxidized to ferric sulfate, get final product the product ferrum sulfuricum oxydatum solutum.
And the ferrous sulfate that the present invention produced is of many uses, is applicable to dyeing and finishing industry, leather industry and wastewater treatment; And the ferric sulfate of ferrous sulfate after oxidation can use at solid polymerization water purification agent and sewage-treating agent.
In sum, the invention relates to a kind of manufacture method and device that in spent acid solution, extracts useful matter, it is to use sulfuric acid and spent acid solution to react, so that being transformed, iron protochloride forms ferrous sulfate, and produce concentration and be higher than hydrochloric acid in the spent acid solution, and ferrous sulfate feeds ozone again and generates ferric sulfate with oxidation.So the present invention one has novelty, progressive and can supply the industry utilization.
Claims (13)
1, a kind of device that extracts useful matter in spent acid solution is characterized in that including:
One reactor, the one side connects the absorption tower by pipeline, and opposite side connects settling bath by pipeline;
One absorption tower is connected in the opposite side of this reactor by a pipeline, and receives the dilute acid bath of collection diluted acid by pipeline;
One settling bath is connected in the opposite side of reactor by a pipeline;
One water eliminator is connected in this settling bath; And
One ozone reactor is connected in this settling bath.
2, the device that extracts useful matter in spent acid solution as claimed in claim 1 is characterized in that: be connected to one on the reactor and drive the hair-dryer of hydrochloric acid gas to the absorption tower.
3, the device that extracts useful matter in spent acid solution as claimed in claim 1 is characterized in that: be connected to a mist eliminator that iron ion is removed between reactor and absorption tower.
4, the device that extracts useful matter in spent acid solution as claimed in claim 1 is characterized in that: wherein be provided with a water washing device in this settling bath.
5, a kind of manufacture method of extracting useful matter in spent acid solution is characterized in that:
Spent acid solution and sulfuric acid are inserted in the reactor, make the iron protochloride reaction in sulfuric acid and the spent acid solution,, contain remaining acid in this ferrous sulfate to generate ferrous sulfate:
The ferrous sulfate that will contain remaining acid send settling bath to remove remaining acid contained in it, send again water eliminator with the moisture that is contained in it remove satisfy the ferrous sulfate powder;
Ferrous sulfate is carried out oxidizing reaction obtain ferrum sulfuricum oxydatum solutum in ozone reactor.
6, the manufacture method of extracting useful matter in spent acid solution as claimed in claim 5, it is characterized in that: wherein the sulfuric acid concentration of this spent acid solution and sulfuric acid reaction is 70%--93%.
7, the manufacture method of extracting useful matter in spent acid solution as claimed in claim 5 is characterized in that: when wherein this spent acid solution and vitriolic react, be the product that is blown into air driven gaseous state shape with a blower.
8, the manufacture method of extracting useful matter in spent acid solution as claimed in claim 7, it is characterized in that: wherein this bubbling air is hydrochloric acid and water vapour and iron with the product of the gaseous state shape of drive.
9, the manufacture method of extracting useful matter in spent acid solution as claimed in claim 7 is characterized in that: wherein be to use filtering mode that the hydrochloric acid of gaseous state shape and the iron in the water vapour are given and remove.
10, the manufacture method of extracting useful matter in spent acid solution as claimed in claim 5, it is characterized in that: wherein this spent acid solution and vitriolic working reaction temperature are 72--92 ℃.
11, the manufacture method of extracting useful matter in spent acid solution as claimed in claim 5, it is characterized in that: wherein this is the tart ferrous sulfate, is to be removed acidity by water washing device flushing ferrous sulfate with water.
12, the manufacture method of extracting useful matter in spent acid solution as claimed in claim 5 is characterized in that: the acid solution after wherein this ferrous sulfate cleans then is back in spent acid solution and the vitriolic reactive tank.
13, the manufacture method of extracting useful matter in spent acid solution as claimed in claim 5 is characterized in that: wherein the oxidizing reaction of ferrous sulfate is to add ozone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01103772 CN1209501C (en) | 2001-02-12 | 2001-02-12 | Process and equipment for extracting useful substances from use acid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01103772 CN1209501C (en) | 2001-02-12 | 2001-02-12 | Process and equipment for extracting useful substances from use acid |
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| Publication Number | Publication Date |
|---|---|
| CN1369574A true CN1369574A (en) | 2002-09-18 |
| CN1209501C CN1209501C (en) | 2005-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01103772 Expired - Fee Related CN1209501C (en) | 2001-02-12 | 2001-02-12 | Process and equipment for extracting useful substances from use acid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005040436A1 (en) * | 2003-10-06 | 2005-05-06 | Tronox Pigments Gmbh | Method for processing heavy metal chloride residues |
| CN1863732A (en) * | 2003-10-06 | 2006-11-15 | 多诺克斯颜料股份有限公司 | Method for the processing of iron-contaminated waste sulphuric acid |
| CN106167326A (en) * | 2016-08-01 | 2016-11-30 | 江苏星瑞化工工程科技有限公司 | A kind of useless acid treatment process |
| CN107879518A (en) * | 2017-12-15 | 2018-04-06 | 周鼎力 | A kind of purification apparatus of drag-out |
-
2001
- 2001-02-12 CN CN 01103772 patent/CN1209501C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005040436A1 (en) * | 2003-10-06 | 2005-05-06 | Tronox Pigments Gmbh | Method for processing heavy metal chloride residues |
| CN1863732A (en) * | 2003-10-06 | 2006-11-15 | 多诺克斯颜料股份有限公司 | Method for the processing of iron-contaminated waste sulphuric acid |
| CN106167326A (en) * | 2016-08-01 | 2016-11-30 | 江苏星瑞化工工程科技有限公司 | A kind of useless acid treatment process |
| CN107879518A (en) * | 2017-12-15 | 2018-04-06 | 周鼎力 | A kind of purification apparatus of drag-out |
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| Publication number | Publication date |
|---|---|
| CN1209501C (en) | 2005-07-06 |
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