CN106745149A - A kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride - Google Patents
A kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride Download PDFInfo
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- CN106745149A CN106745149A CN201611255300.XA CN201611255300A CN106745149A CN 106745149 A CN106745149 A CN 106745149A CN 201611255300 A CN201611255300 A CN 201611255300A CN 106745149 A CN106745149 A CN 106745149A
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- hydrochloric acid
- calcium chloride
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- stone powder
- waste stone
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/24—Chlorides
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
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Abstract
The invention discloses a kind of method that utilization waste stone powder and discarded watery hydrochloric acid of resources circulation comprehensive utilization and building materials environmental technology field produce calcium chloride, including raw material preparation, filtering, desolventing technology, product crystallization and dried process step, the method that the utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride is comprised the following steps that：S1：It is prepared by raw material；S2：Filtering；S3：Desolventing technology；S4：Product is crystallized；S5：Dried process, the present invention is using waste stone powder and discarded watery hydrochloric acid as raw material, reduce energy resource consumption, the direct discharge of discarded acid solution is solved, environmental pressure is alleviated, it is to avoid cause environmental pollution, the calcium chloride content that it is prepared is high, short preparation period, is adapted to the centralization manufacture of factory, improves economic benefit.
Description
Technical field
The present invention relates to resources circulation comprehensive utilization and building materials environmental technology field, it is specially a kind of using waste stone powder and
The method that discarded watery hydrochloric acid produces calcium chloride.
Background technology
The world today, the energy, resource and environmental protection are always the central topic of chlorine industry.In order to accelerate chlorine industry
Development, advanced science and technology is not needed only rely upon, in addition it is also necessary to again on the basis of prior art, improved method, extend channel, reduce
Production cost, reduces energy resource consumption, finally realizes the raising of economic benefit.
Stone flour is the produced building stones powder during stone material is produced of processing of stone factory, because that cannot be carried out preferably to it
Treatment, the accumulation of substantial amounts of stone flour is buried, and not only causes the significant wastage of the hardening soil, hardening, pollution of waterhead and resource, also right
The sustainable development of stone material industry causes very big negative effect.Therefore a kind of industrial item that can largely consume stone flour is found
Mesh, develops the secondary utilization ways of waste stone powder, and the comprehensive utilization and protection of resources to realizing solid waste have important
Meaning, and significant Social benefit and economic benefit will be produced,
Hydrochloric acid makes a kind of important inorganic chemical product, is widely used in dyestuff, organic synthesis, food processing, printing and dyeing drift
Wash, the industry such as leather, metallurgy and steel, in Chemical Manufacture, the annual hydrochloric waste water for producing cannot then be counted, and these give up
If acid solution is directly discharged, serious environmental pollution is not only caused, can also reduce the economic benefit of enterprise.In order to do waste water well, give up
The improvement of acid solution, environmental protection is saved and is made rational use of resources, therefore, we have proposed one kind is using waste stone powder and discards
The method that watery hydrochloric acid produces calcium chloride comes into operation to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride, to solve
The wasting of resources proposed in certainly above-mentioned background technology, stone flour recycles the problem that cannot obtain effectively solving.
To achieve the above object, the present invention provides following technical scheme：One kind utilizes waste stone powder and discarded watery hydrochloric acid system
The method for taking calcium chloride, including raw material preparation, filtering, desolventing technology, product crystallization and dried process step, it is described using discarded
The method that stone flour and discarded watery hydrochloric acid produce calcium chloride is comprised the following steps that：
S1：It is prepared by raw material：Waste stone powder is added in discarded dilute hydrochloric acid solution, and is stirred continuously up to being completely dissolved,
Form mixed solution；
S2：Filtering：Mixed solution is placed in filter plant and is filtered, brownish red clarification is obtained after solid impurity is filtered
Liquid；
S3：Desolventing technology：Appropriate catalyst is added in slurries after filtration and is stirred, slurries are heated to
55-90 DEG C, 35-65min is incubated, and filtered again, the catalyst residue composition in slurries is filtered, obtain colourless or slightly yellow
Transparency liquid；
S4：Product is crystallized：Solution after decolouring is placed on electric furnace and is heated, concentrate it, chlorine is obtained after cooling
Change calcium crystal；
S5：Dried process：Crystallization of calcium chloride thing is put into baking oven and is dried, wherein oven temperature is controlled at 180-220 DEG C,
Calcium chloride finished product can be drawn.
Preferably, in the step S1, add the pH value of conditioning agent regulation mixed solution to 8-9 in mixed solution, make
Iron, magnesium addition form hydroxide and then are precipitated out.
Preferably, the conditioning agent be milk of lime, and add conditioning agent during need it is continual be stirred, make
Conditioning agent is merged completely in mixed solution.
Preferably, in the step S2, filter plant be filter centrifugal or plate and frame filter press, wherein, in filter process
The middle supernatant liquid by mixed solution is suctioned out, the slurries of lower floor by being filtered after filtering to clear and bright, merge supernatant liquid and
Filtered fluid, obtains brownish red clarified solution.
Preferably, in the step S3, filter plant can be used filter centrifugal or plate and frame filter press again, catalyst
Addition is the 4-8% of mixed solution gross mass, and catalyst is activated carbon, water and hydrochloric acid mixture, wherein activated carbon：Water：
Hydrochloric acid=1.5:12:0.9.
Preferably, in the step S4, heating-up temperature is 150-180 DEG C, and cool time is 40-69min.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is made using waste stone powder and discarded watery hydrochloric acid
It is raw material, reduces energy resource consumption, solve the direct discharge of discarded acid solution, alleviates environmental pressure, it is to avoid cause environmental pollution,
The calcium chloride content that it is prepared is high, short preparation period, is adapted to the centralization manufacture of factory, improves economic benefit.
Brief description of the drawings
Fig. 1 is workflow diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment one
A kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride, including raw material prepare, filtering, at decolouring
The method that reason, product crystallization and dried process step, the utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride is specifically walked
It is rapid as follows：
S1：It is prepared by raw material：Waste stone powder is added in discarded dilute hydrochloric acid solution, and is stirred continuously up to being completely dissolved,
Mixed solution is formed, adds the pH value of conditioning agent regulation mixed solution to 8 in mixed solution, iron, magnesium addition is formed hydrogen-oxygen
Compound and then be precipitated out, the conditioning agent is milk of lime, and needed during conditioning agent is added it is continual be stirred,
Conditioning agent is set to be merged completely in mixed solution；
S2：Filtering：Mixed solution is placed in filter plant and is filtered, brownish red clarification is obtained after solid impurity is filtered
Liquid, filter plant be filter centrifugal or plate and frame filter press, wherein, by the supernatant liquid in mixed solution in filter process
Suction out, the slurries of lower floor merge supernatant liquid and filtered fluid by being filtered after filtering to clear and bright, obtain brownish red clarified solution；
S3：Desolventing technology：Appropriate catalyst is added in slurries after filtration and is stirred, slurries are heated to 55
DEG C, 35min is incubated, and filter again, the catalyst residue composition in slurries is filtered, obtain colourless or slightly yellow transparent liquid
Body, again filter plant filter centrifugal or plate and frame filter press can be used, the addition of catalyst is mixed solution gross mass
4%, catalyst is activated carbon, water and hydrochloric acid mixture, wherein activated carbon：Water：Hydrochloric acid=1.5:12:0.9；
S4：Product is crystallized：Solution after decolouring is placed on electric furnace and is heated, concentrate it, chlorine is obtained after cooling
Change calcium crystal, heating-up temperature is 150 DEG C, and cool time is 40min；
S5：Dried process：Crystallization of calcium chloride thing is put into baking oven and is dried, wherein oven temperature control is at 180 DEG C, you can
Draw calcium chloride finished product.
Embodiment two
A kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride, including raw material prepare, filtering, at decolouring
The method that reason, product crystallization and dried process step, the utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride is specifically walked
It is rapid as follows：
S1：It is prepared by raw material：Waste stone powder is added in discarded dilute hydrochloric acid solution, and is stirred continuously up to being completely dissolved,
Mixed solution is formed, adds the pH value of conditioning agent regulation mixed solution to 9 in mixed solution, iron, magnesium addition is formed hydrogen-oxygen
Compound and then be precipitated out, the conditioning agent is milk of lime, and needed during conditioning agent is added it is continual be stirred,
Conditioning agent is set to be merged completely in mixed solution；
S2：Filtering：Mixed solution is placed in filter plant and is filtered, brownish red clarification is obtained after solid impurity is filtered
Liquid, filter plant be filter centrifugal or plate and frame filter press, wherein, by the supernatant liquid in mixed solution in filter process
Suction out, the slurries of lower floor merge supernatant liquid and filtered fluid by being filtered after filtering to clear and bright, obtain brownish red clarified solution；
S3：Desolventing technology：Appropriate catalyst is added in slurries after filtration and is stirred, slurries are heated to 90
DEG C, 65min is incubated, and filter again, the catalyst residue composition in slurries is filtered, obtain colourless or slightly yellow transparent liquid
Body, again filter plant filter centrifugal or plate and frame filter press can be used, the addition of catalyst is mixed solution gross mass
8%, catalyst is activated carbon, water and hydrochloric acid mixture, wherein activated carbon：Water：Hydrochloric acid=1.5:12:0.9；
S4：Product is crystallized：Solution after decolouring is placed on electric furnace and is heated, concentrate it, chlorine is obtained after cooling
Change calcium crystal, heating-up temperature is 180 DEG C, and cool time is 69min；
S5：Dried process：Crystallization of calcium chloride thing is put into baking oven and is dried, wherein oven temperature control is at 220 DEG C, you can
Draw calcium chloride finished product.
Embodiment three
A kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride, including raw material prepare, filtering, at decolouring
The method that reason, product crystallization and dried process step, the utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride is specifically walked
It is rapid as follows：
S1：It is prepared by raw material：Waste stone powder is added in discarded dilute hydrochloric acid solution, and is stirred continuously up to being completely dissolved,
Mixed solution is formed, adds the pH value of conditioning agent regulation mixed solution to 8.5 in mixed solution, iron, magnesium addition is formed hydrogen
Oxide and then it is precipitated out, the conditioning agent is milk of lime, and needs continual being stirred during conditioning agent is added
Mix, conditioning agent is merged completely in mixed solution；
S2：Filtering：Mixed solution is placed in filter plant and is filtered, brownish red clarification is obtained after solid impurity is filtered
Liquid, filter plant be filter centrifugal or plate and frame filter press, wherein, by the supernatant liquid in mixed solution in filter process
Suction out, the slurries of lower floor merge supernatant liquid and filtered fluid by being filtered after filtering to clear and bright, obtain brownish red clarified solution；
S3：Desolventing technology：Appropriate catalyst is added in slurries after filtration and is stirred, slurries are heated to 70
DEG C, 55min is incubated, and filter again, the catalyst residue composition in slurries is filtered, obtain colourless or slightly yellow transparent liquid
Body, again filter plant filter centrifugal or plate and frame filter press can be used, the addition of catalyst is mixed solution gross mass
6%, catalyst is activated carbon, water and hydrochloric acid mixture, wherein activated carbon：Water：Hydrochloric acid=1.5:12:0.9；
S4：Product is crystallized：Solution after decolouring is placed on electric furnace and is heated, concentrate it, chlorine is obtained after cooling
Change calcium crystal, heating-up temperature is 160 DEG C, and cool time is 57min；
S5：Dried process：Crystallization of calcium chloride thing is put into baking oven and is dried, wherein oven temperature control is at 200 DEG C, you can
Draw calcium chloride finished product.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (6)
1. a kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride, including raw material prepare, filtering, at decolouring
Reason, product crystallization and dried process step, it is characterised in that：The utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride
Method is comprised the following steps that：
S1：It is prepared by raw material：Waste stone powder is added in discarded dilute hydrochloric acid solution, and is stirred continuously until being completely dissolved, formation
Mixed solution；
S2：Filtering：Mixed solution is placed in filter plant and is filtered, brownish red clarified solution is obtained after solid impurity is filtered；
S3：Desolventing technology：Appropriate catalyst is added in slurries after filtration and is stirred, slurries are heated to 55-90
DEG C, 35-65min is incubated, and filter again, the catalyst residue composition in slurries is filtered, obtain colourless or slightly yellow transparent
Liquid；
S4：Product is crystallized：Solution after decolouring is placed on electric furnace and is heated, concentrate it, calcium chloride is obtained after cooling
Crystal；
S5：Dried process：Crystallization of calcium chloride thing is put into baking oven and is dried, wherein oven temperature control is at 180-220 DEG C, you can
Draw calcium chloride finished product.
2. the method that a kind of utilization waste stone powder according to claim 1 and discarded watery hydrochloric acid produce calcium chloride, its feature
It is：In the step S1, add the pH value of conditioning agent regulation mixed solution to 8-9 in mixed solution, make iron, magnesium addition shape
Hydrate and then it is precipitated out.
3. the method that a kind of utilization waste stone powder according to claim 2 and discarded watery hydrochloric acid produce calcium chloride, its feature
It is：The conditioning agent is milk of lime, and needed during conditioning agent is added it is continual be stirred, make conditioning agent mixed
Merged completely in conjunction solution.
4. the method that a kind of utilization waste stone powder according to claim 1 and discarded watery hydrochloric acid produce calcium chloride, its feature
It is：In the step S2, filter plant be filter centrifugal or plate and frame filter press, wherein, will mix molten in filter process
Supernatant liquid in liquid is suctioned out, and the slurries of lower floor merge supernatant liquid and filtered fluid by being filtered after filtering to clear and bright, obtain
Brownish red clarified solution.
5. the method that a kind of utilization waste stone powder according to claim 1 and discarded watery hydrochloric acid produce calcium chloride, its feature
It is：In the step S3, filter plant can be used filter centrifugal or plate and frame filter press again, and the addition of catalyst is mixed
The 4-8% of solution gross mass is closed, catalyst is activated carbon, water and hydrochloric acid mixture, wherein activated carbon：Water：Hydrochloric acid=
1.5:12:0.9。
6. the method that a kind of utilization waste stone powder according to claim 1 and discarded watery hydrochloric acid produce calcium chloride, its feature
It is：In the step S4, heating-up temperature is 150-180 DEG C, and cool time is 40-69min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611255300.XA CN106745149A (en) | 2016-12-30 | 2016-12-30 | A kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride |
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| CN201611255300.XA CN106745149A (en) | 2016-12-30 | 2016-12-30 | A kind of method that utilization waste stone powder and discarded watery hydrochloric acid produce calcium chloride |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607590A (en) * | 2018-12-26 | 2019-04-12 | 四川龙蟒磷化工有限公司 | A kind of preparation method of calcium chloride |
| CN113233492A (en) * | 2021-04-30 | 2021-08-10 | 太仓中蓝环保科技服务有限公司 | Preparation method of high-purity calcium chloride solution |
| CN113979462A (en) * | 2021-09-27 | 2022-01-28 | 江苏沃德化工有限公司 | Simple synthesis method of liquid calcium bromide |
Citations (4)
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|---|---|---|---|---|
| JPS58176125A (en) * | 1982-04-12 | 1983-10-15 | Denki Kagaku Kogyo Kk | Preparation of anhydrous calcium chloride |
| CN101683997A (en) * | 2008-09-26 | 2010-03-31 | 天津市黎虹化工有限公司 | Method for producing calcium chloride dihydrate |
| CN105858703A (en) * | 2016-06-15 | 2016-08-17 | 江苏隆昌化工有限公司 | Method for preparing calcium chloride with waste mountain flour and waste diluted hydrochloric acid |
| CN105883884A (en) * | 2016-04-14 | 2016-08-24 | 黄河三角洲京博化工研究院有限公司 | Method for preparing industrial calcium chloride from thiourea waste residues |
-
2016
- 2016-12-30 CN CN201611255300.XA patent/CN106745149A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58176125A (en) * | 1982-04-12 | 1983-10-15 | Denki Kagaku Kogyo Kk | Preparation of anhydrous calcium chloride |
| CN101683997A (en) * | 2008-09-26 | 2010-03-31 | 天津市黎虹化工有限公司 | Method for producing calcium chloride dihydrate |
| CN105883884A (en) * | 2016-04-14 | 2016-08-24 | 黄河三角洲京博化工研究院有限公司 | Method for preparing industrial calcium chloride from thiourea waste residues |
| CN105858703A (en) * | 2016-06-15 | 2016-08-17 | 江苏隆昌化工有限公司 | Method for preparing calcium chloride with waste mountain flour and waste diluted hydrochloric acid |
Non-Patent Citations (1)
| Title |
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| 郝利平等: "《食品添加剂》", 31 July 2016, 中国农业大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109607590A (en) * | 2018-12-26 | 2019-04-12 | 四川龙蟒磷化工有限公司 | A kind of preparation method of calcium chloride |
| CN113233492A (en) * | 2021-04-30 | 2021-08-10 | 太仓中蓝环保科技服务有限公司 | Preparation method of high-purity calcium chloride solution |
| CN113233492B (en) * | 2021-04-30 | 2023-11-21 | 太仓中蓝环保科技服务有限公司 | Preparation method of high-purity calcium chloride solution |
| CN113979462A (en) * | 2021-09-27 | 2022-01-28 | 江苏沃德化工有限公司 | Simple synthesis method of liquid calcium bromide |
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Application publication date: 20170531 |