CN109775741A - Using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate - Google Patents
Using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate Download PDFInfo
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- CN109775741A CN109775741A CN201910240200.7A CN201910240200A CN109775741A CN 109775741 A CN109775741 A CN 109775741A CN 201910240200 A CN201910240200 A CN 201910240200A CN 109775741 A CN109775741 A CN 109775741A
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- raw material
- electronics industry
- spent acid
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Abstract
The present invention provides a kind of using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate.Aluminium hydroxide crude product of the technical solution using the sulfuric acid solution of concentration 53~55% and content not less than 64.5% is raw material, reaction obtains aluminum sulfate solution under special reaction condition, then on steel belt crystallizer surface, cooled and solidified is in blocks, most afterwards through crushing, measure, be packaged to be anhydrous slufuric acid aluminium finished product.The present invention is lower to material purity requirement, thus executes production using electronics industry spent acid, reduces costs and improves economic value added.Production procedure of the present invention is simple, easy to operate, and small investment is pollution-free, and manufacturing cost is relatively low, rate of return on investment with higher.The present invention realizes technical effect outstanding with innovative technological improvement, and cost is relatively low, is easily achieved, therefore has good promotion prospect.
Description
Technical field
The present invention relates to chemical technology fields, further to the production technology of non-iron aluminium sulfate, and in particular to it is a kind of with
Electronics industry spent acid is the method for raw material large-scale production non-iron aluminium sulfate.
Background technique
Aluminum sulfate is one of basic Inorganic Chemicals, be its yield of large tonnage product in inorganic salts countries in the world without
Former positions are accounted in machine salt industrial.Second is accounted for as Japan is only second to waterglass.U.S.'s occupy-place the 4th.China accounts for the 4th.
It can be seen that its critical role in national economy.Currently, the purposes of aluminum sulfate is more and more wider with the fast development of national economy
It is general.According to incompletely statistics, the production capacity of domestic aluminum sulfate has reached 1,000,000 tons or more, but still is not able to satisfy international and national
The demand in market.
Non-iron aluminium sulfate is white plates or bulk, and it is fast to store easy moisture absorption knot for a long time in air.It is soluble easily in water, aqueous solution
In acidity, it is insoluble in alcohol.Solution product is colorless and transparent liquid.The dehydration temperaturre of non-iron aluminium sulfate is 86.5 DEG C, is heated to
530 DEG C start to decompose, and 860 DEG C of decomposition terminate, decomposition product r-Al2O3.Aluminum sulfate intense hydrolysis in aqueous solution, it is raw first
At intermediate product alkali or salt, aluminium hydroxide is then generated.The product is mainly used for papermaking, water purification and titanium dioxide coating.In papermaking
Acid sizing is largely used in production process.It is used as flocculant in water purification industry.Furthermore it is used as the mordant of printing and dyeing industry；System
Remove from office the tanning extracts of industry；Medical astringent；Timber preservative；Fire foam；Refractory material additive；Heat-insulating material it is fire-retardant
Agent；Food additives；Easer；Produce catalyst and the raw material of synthetic cut stone etc. of ethane.
Electronics industry is the industrial department for manufacturing electronic equipment, electronic component, electronic device and its dedicated raw material.It is adjoint
The production of electronics industry, a large amount of acid-bearing wastewater can be generated, sulfuric acid content is up to 30~60% in part of waste water.Mesh
Before, such waste water needs to be discharged after the processing of specific harmless treatment means, on the one hand increases electronics industry
On the other hand production cost is also the waste to wherein sulfuric acid components, in this case, if can be with electronics industry spent acid
Raw material carries out the production of non-iron aluminium sulfate, then will be expected to improve production efficiency, promotes economic value added.
Summary of the invention
The present invention is directed to be directed to the technological deficiency of the prior art, one kind is provided using electronics industry spent acid as raw material scale metaplasia
The method for producing non-iron aluminium sulfate, the lower technical problem of non-iron aluminium sulfate production method efficiency to solve the prior art.
Another technical problem to be solved by the present invention is that how to realize the effective use to electronics industry spent acid.
To realize the above technical purpose, the invention adopts the following technical scheme:
Using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate, comprising the following steps: to reaction kettle
Middle addition water, then under agitation thereto be added aluminium hydroxide raw material, capping kettle, wherein with 4 times of hydrogen-oxygens
The sulfuric acid solution reaction for changing aluminum feedstock quality, is then put into steel belt crystallizer for reaction product, the aluminum sulfate solution generated is made to exist
Steel belt crystallizer surface cooled and solidified is in blocks, is finally crushed, measured, packed, obtains product.
Preferably, the dosage of the water is no more than the quality of the sulfuric acid solution.
Preferably, the concentration of the sulfuric acid solution is 53~55%.
Preferably, the sulfuric acid solution is electronics industry spent acid.
Preferably, Al in the aluminium hydroxide raw material2O3Content be not less than 64.5%.
Preferably, the electricity consumption of this method is 20KWh/ tons of products.
The present invention provides a kind of using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate.The technology
Aluminium hydroxide crude product of the scheme using the sulfuric acid solution of concentration 53~55% and content not less than 64.5% is raw material, in specific reaction
Under the conditions of reaction obtain aluminum sulfate solution, then on steel belt crystallizer surface, cooled and solidified is in blocks, most afterwards through crushing, metering, packet
Dress obtains anhydrous slufuric acid aluminium finished product.The present invention is lower to material purity requirement, thus executes production using electronics industry spent acid,
It reduces costs and improves economic value added.Production procedure of the present invention is simple, easy to operate, and small investment is pollution-free, manufacture at
This relatively low, rate of return on investment with higher.The present invention realizes technical effect outstanding with innovative technological improvement,
Cost is relatively low for it, is easily achieved, therefore has good promotion prospect.
Specific embodiment
Below by specific embodiments of the present invention will be described in detail.In order to avoid excessive unnecessary details,
It will not be described in detail in following embodiment to belonging to well known structure or function.Approximation used in following embodiment
Language can be used for quantitative expression, show to allow quantity to have certain variation in the case where not changing basic function.It is fixed except having
Adopted outer, technical and scientific term used in following embodiment has the phase being commonly understood by with those skilled in the art of the invention
Same meaning.
Embodiment 1
Quantitative water is added into reaction kettle, is then added aluminium hydroxide under agitation, capping kettle is and certain
The sulfuric acid of concentration is reacted, and is put into steel belt crystallizer after reacting a period of time, crystallizes the aluminum sulfate solution generated in steel band
Machine surface cooled and solidified is in blocks, is finally crushed, is measured, being packaged into qualified finished product.The technique production procedure is simple, operation side
Just, small investment, pollution-free, manufacturing cost is relatively low, and rate of return on investment is relatively high.
One, primary raw material and power consumption:
Primary raw material and power consumption statistical conditions are as shown in the following Table 1:
1 primary raw material of table and power consumption statistical form
| Project | The norm quota of consumption (ton/ton product) | Remarks |
| Sulfuric acid | 1.0 | Concentration 53%-55% |
| Aluminium hydroxide | 0.25 | AI2O3 >=64.5% |
| Water | 1.0 | Process water and cooling water |
| Electricity | 20KWh/ tons of products |
Two, production cost (based on current internal sources and energy prices) and benefit estimation:
1, production cost is constituted
Production cost constitutes as shown in the following Table 2:
2 production cost of table constitutes detail
| Project | Monovalent (yuan/ton) | Unit cost (yuan/ton production) |
| Sulfuric acid | 90 | 90.0 |
| Aluminium hydroxide | 2200 | 550.0 |
| Packing material | 1.5 yuan/item | 30.0 |
| Water | 3 | 3.0 |
| Electricity | 1 yuan/KWh | 20 |
| Wage | 80.0 | |
| Maintenance cost | 5.0 | |
| Production cost | 778.0 |
2, economic benefit is estimated:
The price of non-iron aluminium sulfate is 1100 yuan/ton at present, and based on the tax rate 6%, gross profit is 1100 × 94%-778
=256 yuan/ton of product
Based on 10,000 tons/year of non-iron aluminium sulfates, annual return is about 2,560,000 yuan.
Three, environmental pollution and protection:
1, waste vapour: it is water vapour that reaction, which is interrupted steam discharge and evaporation steam discharge, nontoxic, without taking control measures.
2, waste residue: two kinds of raw materials are completely converted into product, without any waste residue.
3, waste water: process water fully enters product, and cooling water is recycled, non-wastewater discharge.
Four, area of mill site and mill construction requirement:
Workshop and warehouse: 1800 ㎡.
Workshop and warehouse are steel construction.
Five, equipment list and investment estimate: as shown in the following Table 3.
3 one ten thousand tons/year of non-iron aluminium sulfate equipments list of table and investment estimate
Embodiment 2
Using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate, comprising the following steps: to reaction kettle
Middle addition water, then under agitation thereto be added aluminium hydroxide raw material, capping kettle, wherein with 4 times of hydrogen-oxygens
The sulfuric acid solution reaction for changing aluminum feedstock quality, is then put into steel belt crystallizer for reaction product, the aluminum sulfate solution generated is made to exist
Steel belt crystallizer surface cooled and solidified is in blocks, is finally crushed, measured, packed, obtains product.Wherein, the dosage of the water
No more than the quality of the sulfuric acid solution.The concentration of the sulfuric acid solution is 53%.The sulfuric acid solution is electronics industry spent acid.
Al in the aluminium hydroxide raw material2O3Content be 64.5%.The electricity consumption of this method is 20KWh/ tons of products.
Embodiment 3
Using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate, comprising the following steps: to reaction kettle
Middle addition water, then under agitation thereto be added aluminium hydroxide raw material, capping kettle, wherein with 4 times of hydrogen-oxygens
The sulfuric acid solution reaction for changing aluminum feedstock quality, is then put into steel belt crystallizer for reaction product, the aluminum sulfate solution generated is made to exist
Steel belt crystallizer surface cooled and solidified is in blocks, is finally crushed, measured, packed, obtains product.Wherein, the sulfuric acid solution
Concentration be 55%.Al in the aluminium hydroxide raw material2O3Content be 72%.
The embodiments of the present invention have been described in detail above, but content is only the preferred embodiment of the present invention,
It is not intended to limit the invention.All any modifications, equivalent replacements, and improvements etc. done in application range of the invention, should all
It is included within protection scope of the present invention.
Claims (6)
1. using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate, it is characterised in that the following steps are included:
Water is added into reaction kettle, aluminium hydroxide raw material, capping kettle, wherein with 4 is then added thereto under agitation
The sulfuric acid solution reaction of times aluminium hydroxide material quality, is then put into steel belt crystallizer for reaction product, makes the sulfuric acid generated
Aluminum solutions are in blocks in steel belt crystallizer surface cooled and solidified, are finally crushed, measured, packed, obtain product.
2. it is according to claim 1 using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate, it is special
Sign is that the dosage of the water is no more than the quality of the sulfuric acid solution.
3. it is according to claim 1 using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate, it is special
Sign is that the concentration of the sulfuric acid solution is 53~55%.
4. it is according to claim 1 using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate, it is special
Sign is that the sulfuric acid solution is electronics industry spent acid.
5. it is according to claim 1 using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate, it is special
Sign is Al in the aluminium hydroxide raw material2O3Content be not less than 64.5%.
6. it is according to claim 1 using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate, it is special
Sign is that the electricity consumption of this method is 20KWh/ tons of products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910240200.7A CN109775741A (en) | 2019-03-28 | 2019-03-28 | Using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910240200.7A CN109775741A (en) | 2019-03-28 | 2019-03-28 | Using electronics industry spent acid as the method for raw material large-scale production non-iron aluminium sulfate |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575112A (en) * | 2008-05-08 | 2009-11-11 | 沈阳铝镁设计研究院 | Method of preparing aluminum sulphate by utilizing fly ash |
| CN201921545U (en) * | 2010-12-08 | 2011-08-10 | 天门福临化工有限责任公司 | Steel belt crystallizer for producing sheet aluminum sulfate |
| CN103172098A (en) * | 2013-03-08 | 2013-06-26 | 淄博正丰工贸有限公司 | One-step non-iron aluminum sulfate preparation method |
| CN206033275U (en) * | 2016-08-29 | 2017-03-22 | 太仓市新星轻工助剂厂 | Energy -conserving high -efficient sulphuric acid aluminium production device |
-
2019
- 2019-03-28 CN CN201910240200.7A patent/CN109775741A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575112A (en) * | 2008-05-08 | 2009-11-11 | 沈阳铝镁设计研究院 | Method of preparing aluminum sulphate by utilizing fly ash |
| CN201921545U (en) * | 2010-12-08 | 2011-08-10 | 天门福临化工有限责任公司 | Steel belt crystallizer for producing sheet aluminum sulfate |
| CN103172098A (en) * | 2013-03-08 | 2013-06-26 | 淄博正丰工贸有限公司 | One-step non-iron aluminum sulfate preparation method |
| CN206033275U (en) * | 2016-08-29 | 2017-03-22 | 太仓市新星轻工助剂厂 | Energy -conserving high -efficient sulphuric acid aluminium production device |
Non-Patent Citations (1)
| Title |
|---|
| 刘安昌: "利用工业废硫酸制备高纯度无铁离子硫酸铝", 《化工生产与技术》 * |
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Application publication date: 20190521 |