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A kind of preparation technology of ach

A preparation process and reactor technology, applied in the field of ACH preparation process, can solve the problems of generating a large amount of hydrogen, burying safe production, hidden dangers, etc., and achieve the effects of improving polymerization efficiency and improving reaction efficiency.

Active Publication Date: 2017-07-18
吉林紫瑞新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at the same time, a large amount of hydrogen may be produced in the process, which has buried a huge hidden danger for safe production, so there is still a lot of room for improvement

Method used

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  • A kind of preparation technology of ach

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Effect test

Embodiment 1

[0032] A preparation process of ACH, comprising the following steps: step 1, feeding nitrogen into a reactor, and performing an emptying treatment on the reactor for a duration of 15 min to 20 min; step 2, taking 1 mol of aluminum ingot and 3 mol mass fraction of 31 % food-grade hydrochloric acid is added to the reactor for reaction, wherein the first 1 mol of food-grade hydrochloric acid with a mass fraction of 31% enters the reactor after directly scouring the surface of the aluminum ingot; step 3, sealing the reactor, A titanium dioxide nano-cluster photocatalyst is arranged at the outlet of the gas outlet of the reactor to remove hydrogen; in step 4, after the aluminum ingot in step 4 is completely dissolved, the solution is stirred with a stirring paddle, and the rotational speed of the stirring paddle is 300rad / min~450rad / min, and the duration is 1min~2min; Step 5: After the stirring is completed, filter the solution quickly; Step 6: Transfer the filtrate to a static con...

Embodiment 2

[0034] A preparation process of ACH, comprising the following steps: step 1, feeding nitrogen into a reactor, and performing an emptying treatment on the reactor for a duration of 15 min to 20 min; step 2, taking 1 mol of aluminum ingot and 4 mol mass fraction of 31 % food-grade hydrochloric acid is added to the reactor for reaction, wherein the first 1 mol of food-grade hydrochloric acid with a mass fraction of 31% enters the reactor after directly scouring the surface of the aluminum ingot; step 3, sealing the reactor, A titanium dioxide nano-cluster photocatalyst is arranged at the outlet of the gas outlet of the reactor to remove hydrogen; in step 4, after the aluminum ingot in step 4 is completely dissolved, the solution is stirred with a stirring paddle, and the rotational speed of the stirring paddle is 300rad / min~450rad / min, the duration is 1min~2min; Step 5: After the stirring is completed, filter the solution quickly; Step 6: Transfer the filtrate to a static contain...

Embodiment 3

[0036] A preparation process of ACH, comprising the following steps: step 1, feeding nitrogen into a reactor, and performing an emptying treatment on the reactor for a duration of 15 min to 20 min; step 2, taking 1 mol of aluminum ingot and 3.6 mol mass fraction of 31% food-grade hydrochloric acid is added into the reactor for reaction, and the first 1 mol of food-grade hydrochloric acid with a mass fraction of 31% enters the reactor after directly scouring the surface of the aluminum ingot; step 3, sealing the reactor , a titanium dioxide nano-cluster photocatalyst is arranged at the mouth of the gas outlet pipe of the reactor to remove hydrogen; in step 4, after the aluminum ingot in step 4 is completely dissolved, the solution is stirred by a stirring paddle, and the rotating speed of the stirring paddle is 300rad / min~ 450rad / min, the duration is 1min~2min; Step 5: After the stirring is completed, filter the solution quickly; Step 6: Transfer the filtrate to a static vessel,...

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Abstract

The invention discloses an ACH preparation process. The process comprises the following steps of 1, introducing nitrogen into a reactor, and conducting evacuation treatment on the reactor; 2, weighing aluminum ingots and hydrochloric acid according to the mole ratio of 1: (3-4), and adding the aluminum ingots and hydrochloric acid into the reactor in step 1 for a reaction; 3, arranging a carbon dioxide photocatalyst at an opening of an air outlet pipe of the reactor to remove hydrogen; 4, adding hydrochloric acid to a solution, and maintaining pH of the solution to be 4-5; 5, conducting static crystallization and polymerization. Evacuation treatment is conducted on the reactor, so that no air is mixed in hydrogen in the reaction process of the aluminum ingots and hydrochloric acid, and thereby the possibility of hydrogen explosion is lowered; a titanium dioxide catalyst is utilized for catalyzing hydrogen and oxygen in the air to react, so that use of open fire is omitted; in addition, by means of the photocatalyst, hydrogen can be consumed rapidly, safety of the ACH preparation process can be further improved, and meanwhile no environmental pollution can be caused in the hydrogen removal process.

Description

technical field [0001] The invention relates to the field of flocculants, in particular to a preparation process of ACH. Background technique [0002] Polyaluminum chloride is used in many applications, including catalysts, water treatment, and antidiarrheals. Each of these applications relies on PAC to neutralize form insoluble aluminum hydroxide. While products with an alkalinity between about 1% and 83% have industrial applicability, products with higher alkalinities generally have higher applicability. Thus, catalyst applications favor PACs with an alkalinity of about 83%, antidiarrheal applications favor PACs with an alkalinity of about 65% to 83%, and water treatment applications favor PACs with an alkalinity of about 50% to 83%. The highest alkalinity PAC of industrial interest is polyaluminum chloride with an alkalinity of about 83%, known as basic aluminum chloride (ACH); its chemical formula is Al 2 (OH) 5 Cl. [0003] In the prior art, the processes for prepa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/56C01B5/00
CPCC01B5/00C01F7/56
Inventor 吴洪兴翟金希孙凤祥徐兴度徐勇匡新杰谭政汤晓华
Owner 吉林紫瑞新材料有限公司