CN101531389B - Method for producing polyaluminium chloride - Google Patents

Method for producing polyaluminium chloride Download PDF

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Publication number
CN101531389B
CN101531389B CN2009100970312A CN200910097031A CN101531389B CN 101531389 B CN101531389 B CN 101531389B CN 2009100970312 A CN2009100970312 A CN 2009100970312A CN 200910097031 A CN200910097031 A CN 200910097031A CN 101531389 B CN101531389 B CN 101531389B
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calcium aluminate
aluminate powder
water
temperature
mother liquor
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CN101531389A (en
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沈烈翔
徐鑫英
解望斐
沈敬贤
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Zhejiang Haixiang Water Purification Technology Co ltd
Zhejiang Jialing Environmental Protection Technology Co.,Ltd.
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Jiashan Haixia Chemical-Product Of Purified-Water Manufacture Co Ltd
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Abstract

The invention relates to a method for producing polyaluminium chloride as a drinking water treating agent, which uses 1 ton of liquid product which contains 10 percent of Al2O3 in mass content as a mother solution of which total output is 15 to 40 percent in percentage by mass. The mother solution is added with 200 to 210 kilograms of calcium aluminate powder in one step under a stirring state, wherein the content of the Al2O3 is 51 to 52 percent. Under normal temperature, industrial synthetic hydrochloric acid with 100 percent of mass concentration is added into the mother solution, and the weight of the industrial synthetic hydrochloric acid is 0.65 to 0.83 of the calcium aluminate powder. When the temperature is raised to 55 DEG C, 661.8 to 624.9 kilograms of water is added into the mother solution, and the flow is controlled within a reaction temperature of between 87 and 100 DEG C. When the temperature finally does not reach 87 DEG C, steam is supplemented, and water quantity is deducted. When the reaction is carried out for 2 to 3 hours, liquid and slag are separated. The raw material variety of the invention is little, the process flow is short, the reaction is shortened by one third, the harmful substances are controlled in a standard range, the cost is lowered, the waste slag is little, and the obtained product has clear color and good quality.

Description

The working method of poly aluminium chloride
Technical field
The present invention belongs to the processing group of water, waste water, sewage or mud in International Patent Classification (IPC), i.e. CO2F, the particularly working method of the treatment agent-poly aluminium chloride of tap water.
Background technology
Since ancient times, the treatment process of water has natural sedimentation, husky filter and alum to coagulate wadding.There has been well behaved poly aluminium chloride water conditioner nineteen sixties.Said poly aluminium chloride is a raw material with aluminium bits or aluminium ash or aluminium slag, makes with hydrochloric acid reaction.In the product that this method is produced, impurity is many, and heavy metal content exceeds standard, and production process produces flammable explosive gas such as a large amount of hydrogen, hydrogenchloride simultaneously, so security is relatively poor, can not form scale prodn.Products obtained therefrom can not be as the drinking water treatment agent.In the production of drinking water treatment agent poly aluminium chloride, adopt two-step approach to produce.The first step is raw material or is that raw material reacts with bauxitic clay, industrial synthesis hydrochloric acid with white lake, industrial synthesis hydrochloric acid.In second step, add calcium aluminate powder again and accomplish final reaction.When being raw material with white lake, production cost is high, valuable product; When being raw material with the bauxitic clay, product impurity is many, heavy metals exceeding standard, and waste residue is many simultaneously, brings environmental protection pressure.It is long that two-step approach is produced relative technical process, and the reaction times reached more than 4 hours, and complicated operation.Along with the process of the strategy of sustainable development, press for the new water conditioner that super quality and competitive price are easy to promote, particularly tap water water conditioner.Through the retrieval of country-level retrieval unit, fail to detect new technical scheme.
Summary of the invention
The objective of the invention is to explore the new working method of poly aluminium chloride, it can be used for as the former water treatment in the ground of tap water.The requirement raw material is simple, the reaction times is short, production cost is low, and waste residue is few simultaneously, is beneficial to environmental improvement.
For realizing above-mentioned purpose, it is following to disclose new technical scheme:
A kind of working method of poly aluminium chloride is a raw material with calcium aluminate powder and industrial synthesis hydrochloric acid, it is characterized in that with new synthetic 10%Al per ton 2O 3The poly aluminium chloride liquid end product meter of mass content, composition of raw materials is:
Calcium aluminate powder is 200~210kg, when said calcium aluminate powder is measured with acid pasting, and Al wherein 2O 3Content is 51~52% of calcium aluminate powder;
The quality that is converted into the industrial synthesis hydrochloric acid of 100% mass concentration is the 0.65-0.83 of above-mentioned calcium aluminate powder;
Water 661.8~624.9kg.
Production stage is:
A. prepare mother liquor: the mass ratio by mother liquor amount and ultimate production is 15-40%, gets the poly aluminium chloride finished fluid and adds reaction vessel as mother liquor, and wherein, ultimate production is meant the quality summation of mother liquor amount and new synthetic liquid end product amount:
B. under the continuous stirring condition of above-mentioned mother liquor, once add calcium aluminate powder;
C. under the normal temperature, add industrial synthesis hydrochloric acid again;
D. add water: when temperature of charge to 55 in the reaction vessel ℃~70 ℃, begin to add water; Flow control when adding water is controlled in 87~100 ℃ of scopes the solution reaction temperature, if when temperature does not reach 87 ℃; Need to mend steam, should deduct the water yield that quantity of steam be converted in the Total Water this moment;
E. add calcium aluminate powder from reaction vessel and pick up counting, parting liquid, slag after 2~3 hours, said separation comprises centrifuging or filter press technique;
F. separating obtained clear liquid is a finished fluid, chemically examines metering of qualified back and warehouse-in, and wherein the poor slightly parting liquid of index can be used as above-mentioned mother liquor use.
According to such scheme, have only two kinds of main raw materials aborning, simplified raw material variety, shortened technical process, accelerated the reaction times, shortened 1/3rd than time of two-step approach; Secondly harmful elements such as arsenic, lead can be in the standard-required scope; The 3rd is that product is limpid, and quality and performance are improved, and its basicity is that the product of raw material rises about 10% than with white lake; And production cost descends more than 10%; With the product ratio that with the bauxitic clay is raw material, waste residue reduces 20~30%, helps environmental improvement; The 4th is that liquid in producing, slag separate easily.
Description of drawings
Figure is the simple and clear skeleton diagram of technical process of the present invention.Wherein the drying process of solid finished product excludes.
Embodiment
A kind of working method of poly aluminium chloride is a raw material with calcium aluminate powder and industrial synthesis hydrochloric acid, it is characterized in that with new synthetic 10%Al per ton 2O 3The poly aluminium chloride liquid end product meter of mass content, composition of raw materials is:
Calcium aluminate powder is 200~210kg, when said calcium aluminate powder is measured with acid pasting, and Al wherein 2O 3Content is 51~52% of calcium aluminate powder;
The quality that is converted into the industrial synthesis hydrochloric acid of 100% mass concentration is the 0.65-0.83 of above-mentioned calcium aluminate powder;
Water 661.8~624.9kg;
Production stage is:
A. prepare mother liquor: the mass ratio by mother liquor amount and ultimate production is 15-40%, gets the poly aluminium chloride finished fluid and adds reaction vessel as mother liquor, and wherein, ultimate production is meant the quality summation of mother liquor amount and new synthetic liquid end product amount;
B. under the continuous stirring condition of above-mentioned mother liquor, once add calcium aluminate powder;
C. under the normal temperature, add industrial synthesis hydrochloric acid again;
D. add water: when temperature of charge to 55 in the reaction vessel ℃~70 ℃, begin to add water; Flow control when adding water is controlled in 87~100 ℃ of scopes the solution reaction temperature, if when temperature does not reach 87 ℃; Need to mend steam, should deduct the water yield that quantity of steam be converted in the Total Water this moment;
E. add calcium aluminate powder from reaction vessel and pick up counting, parting liquid, slag after 2~3 hours, said separation comprises centrifuging or filter press technique;
F. separating obtained clear liquid is a finished fluid, chemically examines metering of qualified back and warehouse-in.Wherein the poor slightly parting liquid of index can be used as above-mentioned mother liquor use.
Embodiment 1, with Al 2O 3Mass content is 1 ton of liquid end product meter of ultimate production of 10%, gets poly aluminium chloride mother liquor 150kg, puts into reaction vessel, adds calcium aluminate powder (Al at stirring condition next time 2O 3Content 51~52%; Acid pasting) 170kg, then at normal temperatures, it is 100% technical hydrochloric acid 110.5kg (mass ratio 0.65) that adding is converted into mass concentration; When temperature reaches 55 ℃; Progressively add water 569.5kg, the dominant discharge meter makes that fluid temperature is between 87~100 ℃ in the reaction vessel, carries out liquid after 2 hours, slag separates.This example adopts filter press technique, gets finished fluid 980kg, waste residue 20kg.Finished fluid meets the GB15892-2003 standard.
Embodiment 2, with Al 2O 3Mass content is 1 ton of liquid end product meter of ultimate production of 10%, gets poly aluminium chloride mother liquor 400kg, puts into reaction vessel, stirs to add calcium aluminate powder (Al next time 2O 3Content 51~52%, acid pasting) 126kg, it is the synthetic synthetic hydrochloric acid 104.6kg (mass ratio 0.83) of 100% industry that the normal temperature adding is converted into mass concentration; When temperature reaches 55 ℃, add water 369.4kg, dominant discharge requires reacting liquid temperature 87~100 ℃ of scopes; Get into liquid, slag separation after 2 hours; This example adopts centrifuging, gets finished fluid 985kg, waste residue 15kg.Finished fluid meets the GB15892-2003 standard.
Embodiment 3, according to last example, get mother liquor 200kg; Put into reaction tank; Stirring adds calcium aluminate powder 164kg next time, and it is 100% industrial synthesis hydrochloric acid 114.8kg (mass ratio 0.70) that the normal temperature adding is converted into mass concentration, when the pond interior reaction temperature reaches 60 ℃; Add water 521.2kg, flow control makes that temperature is in 87~100 ℃ of scopes in the pond.2.0 liquid, slag separate after hour, this example adopts filter press technique, gets finished fluid 980kg, waste residue 20kg.Finished fluid meets the GB15892-2003 standard.
Embodiment 4, with Al 2O 3Mass content is 10% ultimate production meter, gets poly aluminium chloride mother liquor 300kg, puts into reactor, under agitation once adds calcium aluminate powder (Al 2O 3Content 51~52%, acid pasting) 147kg, normal temperature adds that to be converted into mass concentration be 100% hydrochloric acid 117.6kg (mass ratio 0.80) then; When pot internal reaction thing temperature reaches 55 ℃, add water 435.4kg, dominant discharge; Make pot internal reaction thing temperature between 87~100 ℃, liquid, slag separate after 2 hours, and this example adopts centrifuging; Get finished product poly aluminium chloride liquid 985kg, finished fluid meets the GB15892-2003 standard.
The amount of above-mentioned each routine gained finished fluid comprises the mother liquor amount.The technology final step is check, standard compliant warehouse-in; Index is poor slightly is converted to after the above-mentioned requirements as mother liquor.Particular product performance parameters can be adjusted in process of production.
When producing solid poly aluminium chloride finished product, also need drying process.The industrial synthesis hydrochloric acid mass concentration is generally about 20.5% in actual production, and should deduct its water cut this moment in Total Water.As being surpassed, Total Water upward then should suitably improve concentration of hydrochloric acid in limited time.

Claims (1)

1. the working method of a poly aluminium chloride is a raw material with calcium aluminate powder and industrial synthesis hydrochloric acid, it is characterized in that with new synthetic 10%Al per ton 2O 3The poly aluminium chloride liquid end product meter of mass content, composition of raw materials is:
Calcium aluminate powder is 200~210kg, when said calcium aluminate powder is measured with acid pasting, and Al wherein 2O 3Content is 51~52% of calcium aluminate powder;
Industrial synthesis hydrochloric acid is when being converted into the mass concentration of 100% hydrogenchloride, and its quality is 65%~83% of an above-mentioned calcium aluminate powder quality;
Water 661.8~624.9kg;
Production stage is:
A. prepare mother liquor: the mass ratio by mother liquor amount and ultimate production is 15-40%, gets the poly aluminium chloride finished fluid as mother liquor, and wherein, ultimate production is meant the quality summation of mother liquor amount and new synthetic liquid end product amount;
B. under the continuous stirring condition of above-mentioned mother liquor, once add calcium aluminate powder;
C. under the normal temperature, add industrial synthesis hydrochloric acid again;
D. add water: when temperature of charge to 55 in the reaction vessel ℃~70 ℃, begin to add water; Flow control when adding water makes the solution reaction temperature be controlled at 87~100 ℃ of scopes, if when temperature does not reach 87 ℃; Mend steam, should deduct the water yield that quantity of steam be converted in the Total Water this moment;
E. add calcium aluminate powder from reaction vessel and pick up counting, parting liquid, slag after 2~3 hours, said separation comprises centrifuging or filter press technique;
F. separating obtained clear liquid is a finished fluid, chemically examines metering of qualified back and warehouse-in.
CN2009100970312A 2009-03-26 2009-03-26 Method for producing polyaluminium chloride Active CN101531389B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102070170B (en) * 2009-11-19 2013-05-29 蓝保(厦门)水处理科技有限公司 Method for producing polyaluminium chloride
CN102372299A (en) * 2010-08-08 2012-03-14 嘉善绿野环保材料厂 Preparation method of poly aluminum chloride in high purity
CN103265103A (en) * 2013-06-07 2013-08-28 嘉善海峡净水灵化工有限公司 Process for recycling filter residues of polyaluminium chloride series coagulants
CN104477959B (en) * 2014-12-18 2017-03-22 嘉善海峡净水灵化工有限公司 Production process of high-concentration polyaluminium chloride
CN106517281A (en) * 2016-09-30 2017-03-22 嘉善海峡净水灵化工有限公司 Polyaluminum chloride preparation method
CN106673041B (en) * 2016-12-27 2018-03-27 蓝保(厦门)水处理科技有限公司 A kind of production technology of efficiently highly concentrated polyaluminium chloride

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004323254A (en) * 2003-04-22 2004-11-18 Kotegawa Sangyo Kk Method for manufacturing calcium aluminate having polyhedral form
CN101037212A (en) * 2007-04-28 2007-09-19 王军 Technical process for producing chloride aluminum
CN101200301A (en) * 2007-11-23 2008-06-18 华泰集团有限公司 Method for directly producing polymeric aluminium chloride additive by employing calcium hypochlorite powder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004323254A (en) * 2003-04-22 2004-11-18 Kotegawa Sangyo Kk Method for manufacturing calcium aluminate having polyhedral form
CN101037212A (en) * 2007-04-28 2007-09-19 王军 Technical process for producing chloride aluminum
CN101200301A (en) * 2007-11-23 2008-06-18 华泰集团有限公司 Method for directly producing polymeric aluminium chloride additive by employing calcium hypochlorite powder

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Effective date of registration: 20170519

Address after: 314305, No. 2555, Ping Hai Road, Xitang bridge, Haiyan County, Zhejiang, Jiaxing

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Address before: No. 2555 Pinghai Road, Xitangqiao Street, Haiyan County, Jiaxing City, Zhejiang Province, 314305

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Address after: No. 2555 Pinghai Road, Xitangqiao Street, Haiyan County, Jiaxing City, Zhejiang Province, 314304

Patentee after: Zhejiang Jialing Environmental Protection Technology Co.,Ltd.

Address before: 3/F, Building 2, No. 2555 Pinghai Road, Xitangqiao Street, Haiyan County, Jiaxing City, Zhejiang Province, 314304 (Rooms 301-305)

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