CN109734167A - A kind of preparation process of the efficient polymeric aluminum chloride for wastewater treatment - Google Patents
A kind of preparation process of the efficient polymeric aluminum chloride for wastewater treatment Download PDFInfo
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- CN109734167A CN109734167A CN201910176168.0A CN201910176168A CN109734167A CN 109734167 A CN109734167 A CN 109734167A CN 201910176168 A CN201910176168 A CN 201910176168A CN 109734167 A CN109734167 A CN 109734167A
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- Prior art keywords
- aluminium
- reaction kettle
- slag
- aluminum
- chloride
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- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 39
- 239000004411 aluminium Substances 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 13
- 239000011707 mineral Substances 0.000 claims abstract description 13
- 239000000706 filtrate Substances 0.000 claims abstract description 12
- 238000004062 sedimentation Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000001376 precipitating effect Effects 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 7
- 238000001953 recrystallisation Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000000047 product Substances 0.000 claims description 13
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000020477 pH reduction Effects 0.000 abstract description 2
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 239000002956 ash Substances 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 2
- 229920000592 inorganic polymer Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 1
- 241000238370 Sepia Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of preparation processes of efficient polymeric aluminum chloride for wastewater treatment, comprising the following steps: A, the solution for choosing suitable concentration；B, it is transported in reaction kettle and is heated to；C, cooling obtains aluminium chloride recrystallization；D, crystallization curing polymerization is collected；E, the material in step D sedimentation basin is delivered to stand；F, solidification and dry finished solid aluminium polychloride；G, slag and filtrate are transported；H, pH value reconciles, and carries out post cure polymerization again；It is in the present invention the utility model has the advantages that by before acidolysis to aluminum-containing mineral carry out high-temperature water heating; convenient for the aluminum-containing mineral in later period acidification while also reduce the concentration dosages of the acidifying substances such as hydrochloric acid; the filtrate for being solidified by precipitating slag to bottom in sedimentation basin and drying device and being generated after being dried; it polymerize back to post cure is participated in reaction kettle; aluminium polychloride yield can be improved; slag residual can also be effectively reduced simultaneously, protect environment.
Description
Technical field
The invention discloses a kind of preparation processes of efficient polymeric aluminum chloride for wastewater treatment, belong to sewage purification material
Expect technical field.
Background technique
Aluminium polychloride is a kind of water-purifying material, inorganic polymer coagulant, and is called poly-aluminium for short, and english abbreviation is
PAC, due to the bridging action and multivalent anions of hydroxide ion polymerization and the molecular weight that produces is larger, charge is higher
Inorganic polymer water treatment agent.Solid and two kinds of liquid can be morphologically divided into again.Solid is divided into again by color is different
Sepia, ecru, golden yellow and white, liquid can be rendered as colorless and transparent, yellowish, light yellow to yellowish-brown.It is different
The aluminium polychloride of color also has biggish difference in application and production technology, and the method for domestic production aluminium polychloride has very
It is more, mainly there are acid extracting, alkaline process, gel method, thermal decomposition method etc. at present.Common raw material has: pure aluminum, aluminum-containing mineral, aluminium salt
Close object, flyash etc..The production method of current China polymeric aluminum chlorides solution is substantially all to be produced using acid extracting Batch Process PAC
Product, but as the development of social economy and China are to the more stringent of environmental requirement, at present some polyaluminiums on the market
Residue of aluminum reprocessing device can reduce the purity of its aluminium polychloride, can no longer meet the demand of current factory, influence whole
Weight reduces the clean-up effect of aluminium polychloride.
Summary of the invention
A kind of efficient polymeric aluminum chloride for wastewater treatment is provided the purpose of the present invention is to solve above-mentioned insufficient
Preparation process.
To achieve the above object, the invention provides the following technical scheme: a kind of high-efficiency polymerization chlorination for wastewater treatment
The preparation process of aluminium, comprising the following steps:
A, it chooses the hydrochloric acid of suitable concentration and sodium hydroxide is placed in corresponding flux bath, it is spare；
B, pass through conveying dress after crushing the substances such as aluminium skimmings, aluminium ash, aluminium slag, aluminium hydroxide, aluminium chloride and aluminum-containing mineral
It sets to be added in reaction kettle and be reacted, water is added, is heated to 110~140 DEG C；
C, 20~30 DEG C are cooled to, aluminium chloride recrystallization is obtained；
D, crystal aluminum chloride obtained in collection step C, continues to be put into reaction kettle, and the pressure of reaction kettle is controlled in 0.2-
Hydrochloric acid and sodium hydroxide are pumped into reaction kettle by 0.4MPa by metering pump, are added water and are carried out curing polymerization, curing polymerization
Temperature is controlled at 120~130 DEG C,
E, the material in step D is delivered to sedimentation basin, after standing a period of time, supernatant is squeezed into reserve tank
F, the reserve tank in step E is put into drying device and is solidified and is dried, the temperature drop in drying device
Temperature to 15~30 DEG C, packed by finished-product packaging device by the product after filters pressing, and solid polymerization chlorination is got product after packaging
Aluminium；
G, by the precipitating slag of bottom in sedimentation basin, and the filtrate generated after drying device is solidified and is dried is logical
Conveying device is crossed to be transported in stirring pool；
H, pH value reconciliation is carried out to the slag being transported in stirring pool in step G and filtrate, adjusts to corresponding and requires
When pass through slush pump again and be pumped into reaction kettle, carry out post cure polymerization again.
Compared with prior art, beneficial effects of the present invention are as follows:
In the present invention, by carrying out high-temperature water heating to aluminum-containing mineral before acidolysis, convenient for the acid of the aluminum-containing mineral in later period
Also the concentration dosage that the acidifying substances such as hydrochloric acid are reduced while change passes through the precipitating slag and dry dress to bottom in sedimentation basin
The filtrate for being solidified and being generated after being dried is set, back to post cure polymerization is participated in reaction kettle, aluminum-containing mineral is improved and uses
While rate, production cost is also further reduced, aluminium polychloride yield can be improved, while slag can also be effectively reduced
Matter residual, protects environment.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1, a kind of preparation process of the efficient polymeric aluminum chloride for wastewater treatment, comprising the following steps:
A, it chooses the hydrochloric acid of suitable concentration and sodium hydroxide is placed in corresponding flux bath, it is spare；
B, pass through conveying dress after crushing the substances such as aluminium skimmings, aluminium ash, aluminium slag, aluminium hydroxide, aluminium chloride and aluminum-containing mineral
It sets to be added in reaction kettle and be reacted, water is added, is heated to 110 DEG C；
C, 20 DEG C are cooled to, aluminium chloride recrystallization is obtained；
D, crystal aluminum chloride obtained in collection step C, continues to be put into reaction kettle, and the pressure control of reaction kettle exists
Hydrochloric acid and sodium hydroxide are pumped into reaction kettle by 0.2MPa by metering pump, are added water and are carried out curing polymerization, curing polymerization
Temperature is controlled at 120 DEG C,
E, the material in step D is delivered to sedimentation basin, after standing a period of time, supernatant is squeezed into reserve tank
F, the reserve tank in step E is put into drying device and is solidified and is dried, the temperature drop in drying device
Temperature to 15 DEG C, packed by finished-product packaging device by the product after filters pressing, and solid polyaluminium chloride is got product after packaging；
G, by the precipitating slag of bottom in sedimentation basin, and the filtrate generated after drying device is solidified and is dried is logical
Conveying device is crossed to be transported in stirring pool；
H, pH value reconciliation is carried out to the slag being transported in stirring pool in step G and filtrate, adjusts to corresponding and requires
When pass through slush pump again and be pumped into reaction kettle, carry out post cure polymerization again.
Embodiment 2, a kind of preparation process of the efficient polymeric aluminum chloride for wastewater treatment, comprising the following steps:
A, it chooses the hydrochloric acid of suitable concentration and sodium hydroxide is placed in corresponding flux bath, it is spare；
B, pass through conveying dress after crushing the substances such as aluminium skimmings, aluminium ash, aluminium slag, aluminium hydroxide, aluminium chloride and aluminum-containing mineral
It sets to be added in reaction kettle and be reacted, water is added, is heated to 140 DEG C；
C, 30 DEG C are cooled to, aluminium chloride recrystallization is obtained；
D, crystal aluminum chloride obtained in collection step C, continues to be put into reaction kettle, and the pressure control of reaction kettle exists
Hydrochloric acid and sodium hydroxide are pumped into reaction kettle by 0.4MPa by metering pump, are added water and are carried out curing polymerization, curing polymerization
Temperature is controlled at 130 DEG C,
E, the material in step D is delivered to sedimentation basin, after standing a period of time, supernatant is squeezed into reserve tank
F, the reserve tank in step E is put into drying device and is solidified and is dried, the temperature drop in drying device
Temperature to 30 DEG C, packed by finished-product packaging device by the product after filters pressing, and solid polyaluminium chloride is got product after packaging；
G, by the precipitating slag of bottom in sedimentation basin, and the filtrate generated after drying device is solidified and is dried is logical
Conveying device is crossed to be transported in stirring pool；
H, pH value reconciliation is carried out to the slag being transported in stirring pool in step G and filtrate, adjusts to corresponding and requires
When pass through slush pump again and be pumped into reaction kettle, carry out post cure polymerization again.
Specifically, the present invention by before acidolysis to aluminum-containing mineral carry out high-temperature water heating, convenient for the aluminum-containing mineral in later period
Acidification while also reduce the concentration dosages of the acidifying substances such as hydrochloric acid, by precipitating slag to bottom in sedimentation basin and dry
The filtrate that dry device is solidified and generated after being dried improves aluminum-containing mineral back to post cure polymerization is participated in reaction kettle
While utilization rate, production cost is also further reduced, aluminium polychloride yield can be improved, while can also effectively drop
Low slag residual, protects environment.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (1)
1. a kind of preparation process of the efficient polymeric aluminum chloride for wastewater treatment, which comprises the following steps:
A, it chooses the hydrochloric acid of suitable concentration and sodium hydroxide is placed in corresponding flux bath, it is spare；
B, added after crushing the substances such as aluminium skimmings, aluminium ash, aluminium slag, aluminium hydroxide, aluminium chloride and aluminum-containing mineral by conveying device
Enter and reacted into reaction kettle, water is added, is heated to 110~140 DEG C；
C, 20~30 DEG C are cooled to, aluminium chloride recrystallization is obtained；
D, crystal aluminum chloride obtained in collection step C, continues to be put into reaction kettle, and the pressure of reaction kettle is controlled in 0.2-
Hydrochloric acid and sodium hydroxide are pumped into reaction kettle by 0.4MPa by metering pump, are added water and are carried out curing polymerization, curing polymerization
Temperature is controlled at 120~130 DEG C,
E, the material in step D is delivered to sedimentation basin, after standing a period of time, supernatant is squeezed into reserve tank
F, the reserve tank in step E is put into drying device and is solidified and is dried, the greenhouse cooling in drying device is extremely
15~30 DEG C, the product after filters pressing is packed by finished-product packaging device, and solid polyaluminium chloride is got product after packaging；
G, by the precipitating slag of bottom in sedimentation basin, and the filtrate that is generated after drying device is solidified and is dried pass through it is defeated
Device is sent to be transported in stirring pool；
H, pH value reconciliation is carried out to the slag being transported in stirring pool in step G and filtrate, adjusted to correspondence when requiring again
It is pumped into reaction kettle by slush pump, carries out post cure polymerization again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910176168.0A CN109734167A (en) | 2019-03-08 | 2019-03-08 | A kind of preparation process of the efficient polymeric aluminum chloride for wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910176168.0A CN109734167A (en) | 2019-03-08 | 2019-03-08 | A kind of preparation process of the efficient polymeric aluminum chloride for wastewater treatment |
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| CN109734167A true CN109734167A (en) | 2019-05-10 |
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| CN201910176168.0A Pending CN109734167A (en) | 2019-03-08 | 2019-03-08 | A kind of preparation process of the efficient polymeric aluminum chloride for wastewater treatment |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290656A (en) * | 2000-11-10 | 2001-04-11 | 北京万水净水剂有限公司 | Process for producing polymerized aluminium chloride |
| CN1673089A (en) * | 2005-04-22 | 2005-09-28 | 内蒙古大学 | High-Al13 aluminium trichloride polymer crystal and its prepn |
| CN103738992A (en) * | 2014-01-23 | 2014-04-23 | 天津市水洁净水材料有限公司 | Preparation technology of efficient polymeric aluminum chloride for wastewater treatment |
| CN104556182A (en) * | 2015-01-15 | 2015-04-29 | 内蒙古大学 | Method for preparing solid high-efficiency flocculant polyaluminum chloride from fly ash |
| CN106396047A (en) * | 2016-06-20 | 2017-02-15 | 江门市江海区炜洁净水材料有限公司 | Production process for polymeric aluminum water-purifying agent |
-
2019
- 2019-03-08 CN CN201910176168.0A patent/CN109734167A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290656A (en) * | 2000-11-10 | 2001-04-11 | 北京万水净水剂有限公司 | Process for producing polymerized aluminium chloride |
| CN1673089A (en) * | 2005-04-22 | 2005-09-28 | 内蒙古大学 | High-Al13 aluminium trichloride polymer crystal and its prepn |
| CN103738992A (en) * | 2014-01-23 | 2014-04-23 | 天津市水洁净水材料有限公司 | Preparation technology of efficient polymeric aluminum chloride for wastewater treatment |
| CN104556182A (en) * | 2015-01-15 | 2015-04-29 | 内蒙古大学 | Method for preparing solid high-efficiency flocculant polyaluminum chloride from fly ash |
| CN106396047A (en) * | 2016-06-20 | 2017-02-15 | 江门市江海区炜洁净水材料有限公司 | Production process for polymeric aluminum water-purifying agent |
Non-Patent Citations (1)
| Title |
|---|
| 汪多仁: "《绿色净水处理剂》", 30 November 2006, 科学技术文献出版社 * |
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