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High-performance polymeric aluminium and preparation method thereof

A polyaluminum chloride, high-performance technology, applied in chemical instruments and methods, water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of low Al content, low total Al concentration, and easy pollution, etc. problems, to achieve the effects of fast settlement, low dosage, and protection of the ecological environment

Inactive Publication Date: 2019-03-29
江苏蓝遥净水剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing method for preparing polyaluminium chloride has the disadvantages of high cost and the active ingredient Al of the product. 13 Low content, low total Al concentration, easy to produce pollution and other shortcomings

Method used

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  • High-performance polymeric aluminium and preparation method thereof

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preparation example Construction

[0038] The preparation method of described high-performance polyaluminum chloride comprises the steps:

[0039] Step 1, adding zinc chloride to 36% industrial hydrochloric acid, stirring in a constant temperature water bath at 45-55°C for 30-40min, to obtain a zinc chloride solution;

[0040] Step 2. Add sodium silicate to ammonia-free distilled water, then add sulfuric acid with a mass fraction of 37% to adjust the pH to 3-4, and stir in a constant temperature water bath at 60°C at 30r / min for 60-70min to obtain polysilicon acid solution;

[0041] Step 3. Slowly add the above-prepared zinc chloride solution and polysilicate solution to the modified polyaluminum chloride, add NaHCO 3 Solution, stirred at 30r / min to dissolve and polymerized at 55°C for 60-70min, then placed in a drying oven at 108°C for 30h to obtain a viscous liquid;

[0042]Step 4, diluting, filtering and spray-drying the viscous liquid to obtain a powder;

[0043] Step 5, uniformly mixing the powder, sodi...

Embodiment 1

[0045] A high-performance polyaluminum chloride, made of the following main raw materials in parts by weight: 40 parts of modified polyaluminum chloride, 15 parts of sodium chlorate, 10 parts of industrial salt, 6 parts of zinc chloride, 20 parts of 36% industrial hydrochloric acid parts, 10 parts of sodium silicate, 80 parts of ammonia-free distilled water, NaHCO 3 18 parts of solution;

[0046] Described high-performance polyaluminum chloride is made by following steps:

[0047] Step 1, adding zinc chloride to 36% industrial hydrochloric acid, stirring in a constant temperature water bath at 45°C for 40 minutes, to obtain a zinc chloride solution;

[0048] Step 2. Add sodium silicate to ammonia-free distilled water, then add sulfuric acid with a mass fraction of 37% to adjust the pH to 3, and stir magnetically at 30 r / min in a constant temperature water bath at 60°C for 60 minutes to prepare a polysilicate solution;

[0049] Step 3. Slowly add the above-prepared zinc chlor...

Embodiment 2

[0053] A high-performance polyaluminum chloride, made of the following main raw materials in parts by weight: 45 parts of modified polyaluminum chloride, 18 parts of sodium chlorate, 13 parts of industrial salt, 7.5 parts of zinc chloride, 25 parts of 36% industrial hydrochloric acid Parts, 13 parts of sodium silicate, 90 parts of ammonia-free distilled water, NaHCO 3 21 parts of solution;

[0054] Described high-performance polyaluminum chloride is made by following steps:

[0055] Step 1, adding zinc chloride to 36% industrial hydrochloric acid, stirring in a constant temperature water bath at 50°C for 35 minutes, to obtain a zinc chloride solution;

[0056] Step 2. Add sodium silicate to ammonia-free distilled water, then add sulfuric acid with a mass fraction of 37% to adjust the pH to 3.5, and stir magnetically at 30 r / min in a constant temperature water bath at 60°C for 65 minutes to obtain a polysilicic acid solution;

[0057] Step 3. Slowly add the above-prepared zin...

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Abstract

The invention discloses high-performance polymeric aluminium. The high-performance polymeric aluminium is prepared from the following main raw materials in parts by weight: 40-50 parts of modified polymeric aluminium, 15-20 parts of sodium chlorate, 10-16 parts of industrial salt, 6-9 parts of zinc chloride, 20-30 parts of 36% industrial hydrochloric acid, 10-15 parts of sodium silicate, 80-100 parts of ammonia-free distilled water and 18-25 parts of a NaHCO3 solution; and the invention further discloses a preparation method of the high-performance polymeric aluminium. According to the invention, the modified polymeric aluminium is used as a main body, and is copolymerized with the zinc chloride and polysilicic acid in a preparation process, so that a polymer combining aluminium salt, magnesium salt and zinc salt is obtained; and the sodium chlorate and the industrial salt are added, so that the high-performance polymeric aluminium is obtained; when the high-performance polymeric aluminium is used in a wastewater treatment process, the sedimentation speed of wastes is faster; the algae removal effect is good; flocs are large and dense; the sedimentation speed is fast; the adding amount is low; the cost can be effectively reduced; and therefore, the high-performance polymeric aluminium has a great significance for guaranteeing the water supply quality quality and lowering waterproduction cost.

Description

technical field [0001] The invention belongs to the technical field of inorganic polymers, and in particular relates to a high-performance polyaluminum chloride and a preparation method thereof. Background technique [0002] Among the inorganic polymer flocculants, there are many kinds of aluminum-based flocculants, and the preparation process is relatively mature. Among them, polyaluminum chloride (Polyaluminium Chloride), referred to as PAC, usually also known as basic aluminum chloride, polyhydroxyaluminum, etc., is the most mature, most efficient and most widely used variety in current industrial production technology. Polyaluminum chloride does not represent a specific inorganic compound, but a general term for a series of inorganic polymers. [0003] Polyaluminum ferric chloride is an inorganic polymer flocculant formed by bridging aluminum chloride and magnesium chloride through hydroxyl groups in aqueous solution. The molecule has a long chain as the basic structure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
CPCC02F1/5236
Inventor 丁晓红史永忠鲁庆荣季圆许国君俞锋路顺清冯丽
Owner 江苏蓝遥净水剂有限公司
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