Production technology of high-efficiency and high-concentration polyaluminum chloride

A polyaluminum chloride, production process technology, applied in the direction of aluminum chloride, aluminum halide, etc., can solve the problems of high cost performance and lack of promotion of liquid products, and achieve the effect of improving product quality indicators and increasing the degree of polymerization of products

Active Publication Date: 2017-05-17
蓝保(厦门)水处理科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the active ingredients of polyaluminum chloride solid products are still higher than those of liquid products, the water treatment effect of solid products and liquid products is about 1:2.7, so solid products are more cost-effective for long-distance transportation, and liquid products are still not available in the market effective promotion

Method used

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  • Production technology of high-efficiency and high-concentration polyaluminum chloride
  • Production technology of high-efficiency and high-concentration polyaluminum chloride
  • Production technology of high-efficiency and high-concentration polyaluminum chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1: In an acid-resistant primary reaction kettle heated by steam with a stirring device, add appropriate amount of water and 175 parts of industrial hydrochloric acid while stirring to prepare a hydrochloric acid solution with a volume concentration of 22.8%; Add 138 parts of aluminum-containing waste slag, stir until dissolved; then continue to heat up until the temperature of the reaction system is controlled at 100-125°C, and react for 3 hours under normal pressure; sampling and testing;

[0038] Step 2: Pump the primary feed liquid obtained in Step 1 into an acid-resistant polymerization secondary reaction kettle with a stirring device heated by steam, start stirring, add an appropriate amount of water, start adding 46 parts of calcium aluminate powder, and add After the completion, adjust the density of the feed liquid to 1.24g / ml with water, then add 6 parts of synergist trisodium phosphate, raise the temperature until the temperature of the reaction system is ...

Embodiment 2

[0043] Step 1: In an acid-resistant primary reaction kettle heated by steam with a stirring device, add appropriate amount of water and 209 parts of industrial hydrochloric acid while stirring to prepare a hydrochloric acid solution with a volume concentration of 24%; Add 157 parts of aluminum-containing waste slag, stir until dissolved; then continue to heat up until the temperature of the reaction system is controlled at 100-125°C, and react for 4.5 hours under normal pressure; sampling and testing;

[0044] Step 2: Pump the primary feed liquid obtained in Step 1 into an acid-resistant polymerization secondary reaction kettle with a stirring device heated by steam, start stirring, add an appropriate amount of water, start adding 61 parts of calcium aluminate powder, and add After the completion, adjust the density of the feed liquid to 1.26g / ml with water, then add 8 parts of synergist trisodium phosphate, raise the temperature until the temperature of the reaction system is ...

Embodiment 3

[0049] Step 1: In an acid-resistant primary reaction kettle with a stirring device heated by steam, add appropriate amount of water and 188 parts of industrial hydrochloric acid while stirring to prepare a hydrochloric acid solution with a volume concentration of 23.5%; Add 149 parts of aluminum-containing waste slag to the mixture, stir until dissolved; then continue to heat up until the temperature of the reaction system is controlled at 100-125°C, and react for 4 hours under normal pressure; sampling and testing;

[0050] Step 2: Pump the primary feed liquid obtained in Step 1 into an acid-resistant polymerization secondary reactor with a stirring device heated by steam, start stirring, add an appropriate amount of water, start adding 54 parts of calcium aluminate powder, and add After the completion, adjust the density of the feed liquid to 1.25g / ml with water, then add 7 parts of synergist trisodium phosphate, raise the temperature until the temperature of the reaction sys...

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Abstract

The invention discloses a production technology of high-efficiency and high-concentration polyaluminum chloride. Under the condition that lots of process devices and other raw materials are not added, treated aluminum-containing waste residues are neutralized by adopting an aluminum ingot and aluminum tape surface pickling waste liquid to serve as raw materials, and then the high-efficiency and high-concentration liquid polyaluminum chloride is produced through a negative-pressure synergistic concentration technology to replace a conventional solid product. The technology is simple and easy to operate, low in production input and suitable for industrial production; the water purification ratio of the prepared high-efficiency and high-concentration liquid polyaluminum chloride to the conventional solid product is about 1:1; and meanwhile, the production cost of the polyaluminum chloride is greatly reduced by using the aluminum-containing waste residues, wastes are changed into treasures, and the production technology meets the environmental protection concepts of energy conservation and emission reduction and circulation economy.

Description

technical field [0001] The invention belongs to the technical field of polyaluminum chloride production, and in particular relates to a production process of high-efficiency and high-concentration polyaluminum chloride. Background technique [0002] Polyaluminum chloride is a high-efficiency inorganic polymer coagulant, which has the advantages of high efficiency, low consumption, low price, and convenience. Its water purification effect far exceeds other water purification agents such as ferric chloride and aluminum sulfate. [0003] At present, there are mainly two types of polyaluminum chloride: liquid (alumina content ≥ 10%) and solid (alumina content ≥ 29%). Solid products are based on liquid products, and the liquid products are converted into solid products through drying, drying and other processes. This process increases a lot of labor, fuel, equipment, packaging, handling and other costs. The advantage of solid products is that they are cost-effective for long-dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/56
CPCC01F7/56
Inventor 陈嘉宾吕奋勇王志巍吕奋志
Owner 蓝保(厦门)水处理科技有限公司
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