CN105384183A - Process method for producing polyaluminum chloride by using pulverized coal ash - Google Patents
Process method for producing polyaluminum chloride by using pulverized coal ash Download PDFInfo
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- CN105384183A CN105384183A CN201510821165.XA CN201510821165A CN105384183A CN 105384183 A CN105384183 A CN 105384183A CN 201510821165 A CN201510821165 A CN 201510821165A CN 105384183 A CN105384183 A CN 105384183A
- Authority
- CN
- China
- Prior art keywords
- flyash
- pulverized coal
- coal ash
- hydrochloric acid
- aluminum chloride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000010883 coal ash Substances 0.000 title abstract description 8
- 238000004519 manufacturing process Methods 0.000 title abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 title abstract 3
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 36
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003513 alkali Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 239000010881 fly ash Substances 0.000 claims description 29
- 238000003672 processing method Methods 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000013019 agitation Methods 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 239000006227 byproduct Substances 0.000 abstract 1
- 239000004035 construction material Substances 0.000 abstract 1
- 239000010842 industrial wastewater Substances 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 238000011085 pressure filtration Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 239000002910 solid waste Substances 0.000 description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a process method for producing polyaluminum chloride by using pulverized coal ash and belongs to the technical field of utilization of changing waste pulverized coal ash into valuables. The method comprises the steps of firstly, mixing the pulverized coal ash with technical hydrochloric acid, carrying out a reaction at the temperature of 90-100 DEG C under the condition of good stirring so as to produce aluminum chloride, then, adjusting the pH to 4.0-4.5 with alkali, carrying out pressure filtration so as to obtain a liquid finished product, and subjecting filtrated residue to water washing and baking so as to obtain a construction material. The content of aluminum trioxide in the pulverized coal ash is high, shown by the current process, the utilization ratio of the aluminum trioxide in the pulverized coal ash reaches up to 80%, the process is simple and practicable, and the operability is high. The used technical hydrochloric acid is low in price, even, the process method helps some chemical enterprises to consume and utilize the byproduct of the waste acid so as to achieve the aims of saving energy and reducing emission, and thus the production cost is relatively low. The product polyaluminum chloride is wide in application and high in effect and is extensively applied to the purification of municipal water supply, the treatment of municipal sewage and industrial wastewater and other industry domains, so that the price is relatively ideal. The profit margin is relatively large, and the process method has relatively good economic benefit. The social benefit brought about by the process method cannot be underestimated.
Description
(1) technical field
The present invention relates to a kind of flyash to turn waste into wealth and utilize technology, specifically a kind of flyash produces the processing method of polymerize aluminum chloride.
(2) background technology
Along with country faces the height of environmental protection, the national raising to environmental protection understanding, to the reasonable process of solid waste, comprehensive utilization shows important day.Flyash is exactly the one of solid waste, and producer is many, and output is large, and energy comprehensive cyclic utilization, turns waste into wealth significant.
According to No. (2011) 600, national Ministry of Industry and Information about " large Industrial Solid Waste comprehensive utilization " 12 planning " ", large industrial solid castoff comprehensive utilization is the important component part of energy-conserving and environment-protective emerging strategic industries, being the important channel for the faster and better development of industry provides resource to ensure, is also solve large Industrial Solid Waste to dispose and the fundamental policy stacking environmental pollution and the potential safety hazard brought.The comprehensive utilization of large Industrial Solid Waste is the current Important Action realizing industrial repositioning upgrading, guarantees long-range strategy and policy of China's industrial sustainable development especially.
Flyash, for coal-burning power plant, is a large burden, costly in environment, soil, water, the expense such as artificial.In recent years, along with implementation, the development of recycling economy, the appearance successively of state incentives, particularly to the new development of total utilization of PCA, makes coal-burning power plant's situation make moderate progress.But because coal ash output is many, old grey volume of cargo in storage is large, and utilization ratio is low, therefore how to carry out comprehensive utilization, increases operation rate, turn waste into wealth, benefits the nation and the people, and is still an important topic.
At present utilization of fly ash is mainly used in building trade, affect larger by real-estate market, in the low situation of house market, utilization ratio significantly declines, major part is piled up discarded, and wherein content accounts for the discarded real genus of aluminum oxide of about 20% unfortunately, and aluminum oxide is as one of main raw material producing poly-aluminium.Along with population growth, city size, sanitary wastewater, urban sewage discharge increases day by day, poly-aluminium Be very effective and cost cheap and easy to get is low on this sewage of process.Therefore to make good use of this block aluminum oxide in coal ash significant for comprehensive utilization.
(3) summary of the invention
Technical assignment of the present invention is for the deficiencies in the prior art, provides a kind of flyash to produce the processing method of polymerize aluminum chloride.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of flyash produces the processing method of polymerize aluminum chloride, the method is first mixed with technical hydrochloric acid by flyash, and reaction generates aluminum chloride under the temperature condition of 90-100 DEG C and good agitation condition, then regulate PH between 4.0-4.5 with alkali, obtain liquid end product through press filtration, filter residue does construction timber through washing, oven dry.
Further, the temperature condition of described 90-100 DEG C realizes by passing into steam to the mixture of flyash and technical hydrochloric acid.
Further, the concentration of described technical hydrochloric acid is between 15%-31%.
Further, the mass percent of described flyash and technical hydrochloric acid is 1: 1.2-1.6, can regulate proportioning according to raw materials quality situation according to reaction rule.
Further, the mass percent of described flyash and technical hydrochloric acid is 1: 1.4.
Further, the neutralization alkali regulating PH is liming or caustic soda.
A kind of flyash of the present invention produces the processing method of polymerize aluminum chloride compared with prior art, and the beneficial effect produced is:
Because in flyash, alchlor content is high, just current technique is seen, in flyash, alchlor utilization ratio is up to 80%, simple for process, workable.And industrial absorbent hydrochloric acid price used is low, or even help some chemical enterprise consumption to utilize this block by-produced waste acid, reach the object of energy-saving and emission-reduction, therefore production cost is lower.And product polymerize aluminum chloride purposes is wide, effect is large, is widely used in the purification of city water, the process of municipal effluent, trade effluent and the widespread use of other industry fields, therefore relatively says that price is ideal.Profit margin is comparatively large, has good economic benefit.And the social benefit brought thus can not be underestimated.One is the requirement of response country about bulk solid waste comprehensive utilization energy-saving and emission-reduction, reach circulation comprehensive to flyash to utilize, energy-saving and emission-reduction, a great problem is solved to coal-burning power plant, two is the effective utilizations to industrial waste acid, and reduce the control expense of manufacturing enterprise, reducing again the pollution to air, soil, rivers,lakes and seas because of discharge, is kill two birds with one stone.Three is the problems of employment can settling social surplus labor force, contributes for building a harmonious society.
(4) accompanying drawing explanation
Accompanying drawing 1 is process flow sheet of the present invention.
(5) embodiment
Below in conjunction with accompanying drawing 1, the processing method that a kind of flyash of the present invention produces polymerize aluminum chloride is described in detail below.
As shown in Figure 1, a kind of flyash of the present invention produces the processing method of polymerize aluminum chloride, the method is first to mix at 1: 1.4 by mass percentage by flyash and technical hydrochloric acid, and pass into the steam of 90-100 DEG C, under good agitation condition, reaction generates aluminum chloride, then regulate PH between 4.0-4.5 with liming or caustic soda, obtain liquid end product through press filtration, filter residue does construction timber through washing, oven dry.
The concentration of described technical hydrochloric acid is between 15%-31%.
Claims (6)
1. produce a processing method for polymerize aluminum chloride with flyash, it is characterized in that:
The method is first mixed with technical hydrochloric acid by flyash, and reaction generates aluminum chloride under the temperature condition of 90-100 DEG C and good agitation condition, then regulate PH between 4.0-4.5 with alkali, obtain liquid end product through press filtration, filter residue does construction timber through washing, oven dry.
2. a kind of flyash according to claim 1 produces the processing method of polymerize aluminum chloride, and it is characterized in that, the temperature condition of described 90-100 DEG C realizes by passing into steam to the mixture of flyash and technical hydrochloric acid.
3. a kind of flyash according to claim 1 produces the processing method of polymerize aluminum chloride, and it is characterized in that, the concentration of described technical hydrochloric acid is between 15%-31%.
4. a kind of flyash according to claim 1 produces the processing method of polymerize aluminum chloride, and it is characterized in that, the mass percent of described flyash and technical hydrochloric acid is 1: 1.2-1.6.
5. a kind of flyash according to claim 4 produces the processing method of polymerize aluminum chloride, and it is characterized in that, the mass percent of described flyash and technical hydrochloric acid is 1: 1.4.
6. a kind of flyash according to claim 1 produces the processing method of polymerize aluminum chloride, it is characterized in that, the neutralization alkali regulating PH is liming or caustic soda.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510821165.XA CN105384183A (en) | 2015-11-24 | 2015-11-24 | Process method for producing polyaluminum chloride by using pulverized coal ash |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510821165.XA CN105384183A (en) | 2015-11-24 | 2015-11-24 | Process method for producing polyaluminum chloride by using pulverized coal ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105384183A true CN105384183A (en) | 2016-03-09 |
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| CN201510821165.XA Pending CN105384183A (en) | 2015-11-24 | 2015-11-24 | Process method for producing polyaluminum chloride by using pulverized coal ash |
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| CN (1) | CN105384183A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109721092A (en) * | 2019-01-24 | 2019-05-07 | 鄂尔多斯市蓝天白云环保材料有限责任公司 | The preparation method and its gained aluminium polychloride and purposes of a kind of aluminium polychloride |
| CN109748304A (en) * | 2019-01-24 | 2019-05-14 | 鄂尔多斯市蓝天白云环保材料有限责任公司 | The method of comprehensive utilization and product of waste residue in a kind of aluminium polychloride preparation process |
| CN110902704A (en) * | 2018-09-17 | 2020-03-24 | 中国科学院过程工程研究所 | A kind of method utilizing fluidized bed fly ash to prepare polyaluminum chloride |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035623A (en) * | 1989-03-02 | 1989-09-20 | 周天保 | Produce the method for composite flocculation agent with the cinder powder |
| CN101928031A (en) * | 2009-12-15 | 2010-12-29 | 中南民族大学 | Production method of polyaluminium chloride |
| CN104671295A (en) * | 2013-11-29 | 2015-06-03 | 常州校果信息服务有限公司 | Method for preparing polyaluminum ferric chloride water purifier |
-
2015
- 2015-11-24 CN CN201510821165.XA patent/CN105384183A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035623A (en) * | 1989-03-02 | 1989-09-20 | 周天保 | Produce the method for composite flocculation agent with the cinder powder |
| CN101928031A (en) * | 2009-12-15 | 2010-12-29 | 中南民族大学 | Production method of polyaluminium chloride |
| CN104671295A (en) * | 2013-11-29 | 2015-06-03 | 常州校果信息服务有限公司 | Method for preparing polyaluminum ferric chloride water purifier |
Non-Patent Citations (4)
| Title |
|---|
| 孙根行等: ""粉煤灰制备聚氯化铝铁混凝剂及其混凝性能研究"", 《洁净煤技术》 * |
| 方宏庄: ""酸溶粉煤灰制取聚合氯化铝》", 《重庆环境科学》 * |
| 汤鸿霄: "《无机高分子絮凝理论与絮凝剂》", 31 August 2006, 中国建筑工业出版社 * |
| 汪多仁: "《绿色净水处理剂》", 30 November 2006, 科学技术文献出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902704A (en) * | 2018-09-17 | 2020-03-24 | 中国科学院过程工程研究所 | A kind of method utilizing fluidized bed fly ash to prepare polyaluminum chloride |
| CN109721092A (en) * | 2019-01-24 | 2019-05-07 | 鄂尔多斯市蓝天白云环保材料有限责任公司 | The preparation method and its gained aluminium polychloride and purposes of a kind of aluminium polychloride |
| CN109748304A (en) * | 2019-01-24 | 2019-05-14 | 鄂尔多斯市蓝天白云环保材料有限责任公司 | The method of comprehensive utilization and product of waste residue in a kind of aluminium polychloride preparation process |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160309 |
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