CN102701251A - Preparation process of polyaluminium chloride - Google Patents
Preparation process of polyaluminium chloride Download PDFInfo
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- CN102701251A CN102701251A CN2012102233100A CN201210223310A CN102701251A CN 102701251 A CN102701251 A CN 102701251A CN 2012102233100 A CN2012102233100 A CN 2012102233100A CN 201210223310 A CN201210223310 A CN 201210223310A CN 102701251 A CN102701251 A CN 102701251A
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Abstract
The invention discloses a preparation process of polyaluminium chloride and provides the preparation process of polyaluminium chloride as a flocculant for the water treatment. The steps of the process are as follows: pre-treating raw materials of hydrochloric acid, calcium aluminate powder and bauxite; hydrolyzing and polymerizing; and treating the obtained product to obtain an aqueous polyaluminium chloride product and a powdery polyaluminium chloride product. The preparation process provided by the invention strictly controls the production conditions and production process and improves the polymerization conditions to stabilize the polymerization quantity of the product and increase the polymerization quantity. The preparation process can control the basicity of the products by adjusting the proportion of the raw materials in the production to make the products obtain good treatment effect, large alumen ustum, fast settling and purifying speed, high basicity and pH (Potential Of Hydrogen) values and expand the application fields; and meanwhile, as the preparation process uses the wastes from the processing industries as the raw material, the preparation process saves materials, reduces pollution and cost, saves energy and protects the environment.
Description
Technical field
The present invention relates to water technology, be specially a kind of preparation technology who is used for the flocculant poly aluminum chloride of water treatment.
Background technology
Poly aluminum Chloride (PAC) is a kind of poly-hydroxy, the cationic inorganic polymer flocculant of multinuclear complexing body, and the solid phase prod outward appearance is yellow or white solid powder, its chemical molecular formula is: [Al
n(OH)
nCl
3n-m] (in the formula, 0＜m＜3n), and Yi Rongshui, stronger bridge formation adsorptivity is arranged, in hydrolytic process, follow electrochemistry, cohesion, physics variations such as absorption and deposition finally generate Al (OH)
3(OH
2)
3Thereby, reach the purification purpose.The Poly aluminum Chloride (PAC) sour-puckery flavor is heated to more than 110 ℃ the time, decomposes, and emits hydrogen chloride gas successively, is decomposed into aluminum oxide at last.
The character of Poly aluminum Chloride (PAC) embodies through following three indexs:
1. basicity.The degree of the degree of hydroxylation of certain form or alkalization is called basicity or basicity in the Poly aluminum Chloride (PAC).Generally represent with hydroxyl al mole ratio B=[OH]/[Al] percentage.Basicity is one of most important index of Poly aluminum Chloride (PAC), with flocculating effect very confidential relation is arranged.Influent density is high more, and salinity is high more, and then flocculating effect is good more.Conclusion is got up, and in raw water turbidity 86 ~ 10000mg/L scope, the best basicity of Poly aluminum Chloride (PAC) is 40% ~ 90%, and many other characteristics of Poly aluminum Chloride (PAC) are all relevant with basicity.
2. pH value.The pH of polymeric aluminum chlorides solution also is an important index.The OH of free state in its expression solution
-Quantity.The pH value of Poly aluminum Chloride (PAC) generally raises with basicity and increases, but for the liquid that difference is formed, does not have corresponding relation between its pH value and the basicity.Liquid with identical basicity concentration, when concentration not simultaneously, its pH value is also different.
3. alumina content.Alumina content is the measurement index of product effective constituent in the Poly aluminum Chloride (PAC), and the specific density of it and solution has certain relation, and generally speaking specific density is big more, and then alumina content is high more.The Poly aluminum Chloride (PAC) viscosity is relevant with alumina content, increases viscosity with alumina content and increases.Under the same terms, under the same concentrations aluminum oxide condition, the viscosity of Poly aluminum Chloride (PAC) will be lower than Tai-Ace S 150, more helps carrying and using.
The appearance characteristics of Poly aluminum Chloride (PAC) is relevant with basicity, method of manufacture, impurity component and content.Neat liquid Poly aluminum Chloride (PAC), basicity are light yellow transparent liquid in 40% ~ 60% scope the time, and 60% when above, transparent liquid progressively becomes colorless.Gu Poly aluminum Chloride (PAC), basicity is lens 30% when following, is jelly in the time of in 30% ~ 60% scope, gradually becomes vitreum or arborescens when above 60%.And the Poly aluminum Chloride (PAC) color and luster that uses alum clay or clay ore deposit to make is yellow to brown transparent liquid.
The Poly aluminum Chloride (PAC) of preparing according to existing processes; Along with the more and more serious and people of present pending quality problem to discharge and drinking water quality require increasingly high; Can not satisfy the demands, the problem that embodies has: polymerizing condition is unstable, and the difference on effect of handling in the use is big; The basicity indication range is too wide, and treatment effect and usage variance are big; Product purity is not enough, and the contained insolubles in the inside is too much etc.
Summary of the invention
The technical problem that the present invention solved is to provide a kind of production technique of Poly aluminum Chloride (PAC), to solve the shortcoming in the above-mentioned background technology.
Technical problem solved by the invention adopts following technical scheme to realize:
The production technique of Poly aluminum Chloride (PAC) is through aluminum oxide or aluminium and calcium aluminate two-stage polymerization, produces flocculant of polymeric aluminium chloride, and concrete steps are following.
1. raw materials pretreatment:
Hydrochloric acid utilizes the spent acid that produces in the production process of chemical plant; Calcium aluminate powder as starting material, adopts Raymond mill to wear into 100 orders respectively in the aluminum ore and the Wingdale of aluminum content about 45% with aluminum ore; According to 60% aluminum ore particle, the ratio of 40% limestone particle is after mixing; Deliver to 1200 degree High Temperature Furnaces Heating Apparatus roasting reactions, the cooling back is subsequent use; Bauxitic clay; As starting material, adopt Raymond mill to wear into 100 orders respectively in the aluminum ore and the hard coal of aluminum content about 25%, with aluminum ore according to 70% aluminum ore particle; The ratio of 30% limestone particle; Through processing fragment of brick after the mixing that stirs, deliver to 900 degree High Temperature Furnaces Heating Apparatus roastings reactions, it is subsequent use to lower the temperature.
2. reaction:
Earlier bauxitic clay fragment of brick and water are stirred into pasty state, add calcium aluminate powder and hydrochloric acid more successively, wherein, the bauxitic clay amount is 35%, and calcium aluminate powder content is 35%, and content of hydrochloric acid is 30%, and fully reaction is subsequent use.
3. product treatment:
To go up in the step to such an extent that reaction product is carried out sedimentation and handled, can become that product Poly aluminum Chloride (PAC) aqua is stored to put in storage or packing is sold.
Raw material preparation step in the present invention, said bauxitic clay can adopt the discarded tankage of aluminium processing industry to replace.
Based on technical process of the present invention, product treatment is in the stage, and the product after the sedimentation can add drying process, and making the product that makes is the Poly aluminum Chloride (PAC) pulvis.
Beneficial effect:
The present invention's strict control working condition and technology are improved polymerizing condition, make the product polymerization amount stable, and polymerization amount is big; Through getting proportioning raw materials in the adjustment production, can control the basicity of product, make product treatment effective, it is big to play alumen ustum, and subsiding and purifying speed is fast, basicity, PH value index height, Application Areas is wide; Simultaneously, the waste that adopts processing industry is as raw material, and economical with materials reduces and pollutes, and reduces cost energy-conserving and environment-protective.
Embodiment
Understand for technological means, creation characteristic, the process conditions that the present invention is realized are easy to understand, below the present invention is further set forth.
The production technique of Poly aluminum Chloride (PAC) according to the invention, its flow process are raw materials pretreatment, reaction and product treatment, and concrete reaction is the two-step approach reaction, and its reaction formula is:
The first step: Al (OH)
3+ 2HCl=AlCl
3+ 2H
2O
Al(OH)
3+HCl=Al(OH)
2Cl+H
2O
Further condensation reaction is following again under certain temperature and pressure:
Al(OH)
2Cl+?AlCl
3=Al
2(OH)
2Cl
4
Second step: add CaOAl
2O
3Further polyreaction generates high alkali master polymeric aluminum.
CaO+2H
2O=Ca(OH)
2CaO·Al
2O
3+4H
2O=2Al(OH)
3+?Ca(OH)
2
Al
2(OH)
2Cl
4?+?Ca(OH)
2=?Al
2(OH)
4Cl
2+3H
2O?+CaCl
2
Al
2(OH)
2Cl
4?+?Al(OH)
3=?Al
3(OH)
5Cl
4
Al
2(OH)
2Cl
4?+?Al
3(OH)
5Cl
4?=Al
5(OH)
9Cl
6
Poly aluminum Chloride (PAC) is to be formed by bauxitic clay and calcium aluminate powder two step copolymerizations.The content of aluminum oxide is high, and hydrolysis and polymerization process take place in water treatment procedure; The various multinuclear hydroxyl complex ions that occur in colloidal solid ability strong adsorption hydrolysis in the water and the polymerization process.The multinuclear hydroxyl complex ion of the positively charged that is adsorbed can compression double electric layer, reduces electrokinetic potential; Carrying out bridging action simultaneously.The multinuclear polymkeric substance is a plural colloidal solid institute co-absorbed, and two or more colloidal solids are built bridge to be connected etc.These belong to the congregation of colloidal solid, thereby progressively form flocs unit.The final very big Al (OH) of the polymerization degree that forms of flocculation agent
3Flocculation process will be quickened, and flocculation is changed from small to big.Coagulation shows as: the strong charge neutrality effect of a, water-borne glue body material; B, hydrolysate are to the good bridge formation adsorption of suspended substance in the water; C, to the selective adsorption effect of dissolved matter.
The final product flocculant of polymeric aluminium chloride of technical process of the present invention method of use be: 1. solid phase prod is dissolved in water to behind the liquid by 1:3, uses after 10-30 times of clear water is diluted to desired concn again; 2. consumption can be measured optimal coagulant dose according to the different opacities of former water, and general raw water turbidity is when 100-500mg/L, and every kiloton dosage is 10-20kg.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification sheets just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (3)
1. the production technique of Poly aluminum Chloride (PAC) is characterized in that, is through aluminum oxide or aluminium and calcium aluminate two-stage polymerization, produces flocculant of polymeric aluminium chloride, and concrete steps are following:
1. raw materials pretreatment:
Hydrochloric acid utilizes the spent acid that produces in the production process of chemical plant; Calcium aluminate powder as starting material, adopts Raymond mill to wear into 100 orders respectively in the aluminum ore and the Wingdale of aluminum content about 45% with aluminum ore; According to 60% aluminum ore particle, the ratio of 40% limestone particle is after mixing; Deliver to 1200 degree High Temperature Furnaces Heating Apparatus roasting reactions, the cooling back is subsequent use; Bauxitic clay; As starting material, adopt Raymond mill to wear into 100 orders respectively in the aluminum ore and the hard coal of aluminum content about 25%, with aluminum ore according to 70% aluminum ore particle; The ratio of 30% limestone particle; Through processing fragment of brick after the mixing that stirs, deliver to 900 degree High Temperature Furnaces Heating Apparatus roastings reactions, it is subsequent use to lower the temperature;
2. reaction:
Earlier bauxitic clay fragment of brick and water are stirred into pasty state, add calcium aluminate powder and hydrochloric acid more successively, wherein, the bauxitic clay amount is 35%, and calcium aluminate powder content is 35%, and content of hydrochloric acid is 30%, and fully reaction is subsequent use;
3. product treatment:
To go up in the step to such an extent that reaction product is carried out sedimentation and handled, can become that product Poly aluminum Chloride (PAC) aqua is stored to put in storage or packing is sold.
2. the production technique of Poly aluminum Chloride (PAC) according to claim 1 is characterized in that, raw material preparation step in the present invention, said bauxitic clay can adopt the discarded tankage of aluminium processing industry to replace.
3. the production technique of Poly aluminum Chloride (PAC) according to claim 1 is characterized in that, product treatment in the present invention is in the stage, and the product after the sedimentation can add drying process, and making the product that makes is the Poly aluminum Chloride (PAC) pulvis.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556191A (en) * | 2013-10-18 | 2015-04-29 | 乔占印 | Rare-earth polymeric aluminum barium chloride and production technology thereof |
| CN104591248A (en) * | 2014-12-04 | 2015-05-06 | 常州大学 | Method for producing polyaluminum chloride by utilizing aluminium-containing waste hydrochloric acid |
| CN104649391A (en) * | 2014-12-18 | 2015-05-27 | 华南理工大学 | Method for preparing polyaluminum by use of fluorine-containing waste acids |
| CN104761030A (en) * | 2015-03-20 | 2015-07-08 | 杭州萧山三江净水剂有限公司 | Special efficient polyaluminum chloride for printing and dyeing wastewater, and preparation method thereof |
| CN104828849A (en) * | 2015-04-24 | 2015-08-12 | 长沙理工大学 | Method for preparing high-whiteness polyaluminum chloride from duralumite |
| CN110040830A (en) * | 2019-05-30 | 2019-07-23 | 南华大学 | A kind of processing method of industrial wastewater |
| CN110255595A (en) * | 2019-06-27 | 2019-09-20 | 嘉施利（宜城）化肥有限公司 | The preparation method of aluminium polychloride |
| CN111252793A (en) * | 2020-04-01 | 2020-06-09 | 修文县苏达新型环保材料有限公司 | Preparation method of polyaluminum chloride |
| CN111924867A (en) * | 2020-05-11 | 2020-11-13 | 王琪 | Process for co-producing polyaluminium chloride by using acid-washed quartz sand |
| CN112142084A (en) * | 2020-08-04 | 2020-12-29 | 广西锋华环保科技有限公司 | Method for preparing polyaluminum chloride flocculant by using bauxite |
| CN112408442A (en) * | 2020-11-23 | 2021-02-26 | 安徽国泰化工有限公司 | Process for producing polyaluminum chloride by using regenerated waste aluminum oxide |
| CN113443644A (en) * | 2021-07-22 | 2021-09-28 | 刘建国 | Polyaluminum chloride flocculant and preparation method thereof |
| CN113800616A (en) * | 2021-09-30 | 2021-12-17 | 西安吉利电子化工有限公司 | Phosphorus removing agent for wastewater treatment |
| CN114212810A (en) * | 2021-12-09 | 2022-03-22 | 苏州业华环境科技有限公司 | Preparation method of defluorinating agent and defluorination process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125672A (en) * | 2007-08-24 | 2008-02-20 | 中国科学院地质与地球物理研究所 | Method for preparing polymeric aluminum chloride by using kaolinite ore |
| CN101531388A (en) * | 2009-04-23 | 2009-09-16 | 东营华泰精细化工有限责任公司 | Formula and process for producing polymeric aluminum chloride |
| CN101792165A (en) * | 2010-03-16 | 2010-08-04 | 贵州明威环保技术有限公司 | Method for producing polymeric aluminum chloride from kaolin |
| CN102134086A (en) * | 2010-01-25 | 2011-07-27 | 殷邗清 | Production method of polyaluminium chloride (PAC) |
| CN102241411A (en) * | 2011-03-31 | 2011-11-16 | 遵义市恒新化工有限公司 | Formula and process for producing high-aluminum low-calcium calcium aluminate powder |
-
2012
- 2012-07-02 CN CN2012102233100A patent/CN102701251A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101125672A (en) * | 2007-08-24 | 2008-02-20 | 中国科学院地质与地球物理研究所 | Method for preparing polymeric aluminum chloride by using kaolinite ore |
| CN101531388A (en) * | 2009-04-23 | 2009-09-16 | 东营华泰精细化工有限责任公司 | Formula and process for producing polymeric aluminum chloride |
| CN102134086A (en) * | 2010-01-25 | 2011-07-27 | 殷邗清 | Production method of polyaluminium chloride (PAC) |
| CN101792165A (en) * | 2010-03-16 | 2010-08-04 | 贵州明威环保技术有限公司 | Method for producing polymeric aluminum chloride from kaolin |
| CN102241411A (en) * | 2011-03-31 | 2011-11-16 | 遵义市恒新化工有限公司 | Formula and process for producing high-aluminum low-calcium calcium aluminate powder |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556191A (en) * | 2013-10-18 | 2015-04-29 | 乔占印 | Rare-earth polymeric aluminum barium chloride and production technology thereof |
| CN104591248A (en) * | 2014-12-04 | 2015-05-06 | 常州大学 | Method for producing polyaluminum chloride by utilizing aluminium-containing waste hydrochloric acid |
| CN104649391A (en) * | 2014-12-18 | 2015-05-27 | 华南理工大学 | Method for preparing polyaluminum by use of fluorine-containing waste acids |
| CN104761030A (en) * | 2015-03-20 | 2015-07-08 | 杭州萧山三江净水剂有限公司 | Special efficient polyaluminum chloride for printing and dyeing wastewater, and preparation method thereof |
| CN104828849A (en) * | 2015-04-24 | 2015-08-12 | 长沙理工大学 | Method for preparing high-whiteness polyaluminum chloride from duralumite |
| CN110040830A (en) * | 2019-05-30 | 2019-07-23 | 南华大学 | A kind of processing method of industrial wastewater |
| CN110255595A (en) * | 2019-06-27 | 2019-09-20 | 嘉施利（宜城）化肥有限公司 | The preparation method of aluminium polychloride |
| CN111252793A (en) * | 2020-04-01 | 2020-06-09 | 修文县苏达新型环保材料有限公司 | Preparation method of polyaluminum chloride |
| CN111924867A (en) * | 2020-05-11 | 2020-11-13 | 王琪 | Process for co-producing polyaluminium chloride by using acid-washed quartz sand |
| CN112142084A (en) * | 2020-08-04 | 2020-12-29 | 广西锋华环保科技有限公司 | Method for preparing polyaluminum chloride flocculant by using bauxite |
| CN112408442A (en) * | 2020-11-23 | 2021-02-26 | 安徽国泰化工有限公司 | Process for producing polyaluminum chloride by using regenerated waste aluminum oxide |
| CN113443644A (en) * | 2021-07-22 | 2021-09-28 | 刘建国 | Polyaluminum chloride flocculant and preparation method thereof |
| CN113800616A (en) * | 2021-09-30 | 2021-12-17 | 西安吉利电子化工有限公司 | Phosphorus removing agent for wastewater treatment |
| CN114212810A (en) * | 2021-12-09 | 2022-03-22 | 苏州业华环境科技有限公司 | Preparation method of defluorinating agent and defluorination process |
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Application publication date: 20121003 |