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Method for preparing synthesized polymer aluminum sulphate through spent catalyst

A technology of polymerizing aluminum sulfate and waste catalysts, applied in the direction of aluminum sulfate, aluminum sulfur compounds, etc., can solve pollution and other problems, achieve the effect of reducing production costs and making treatment difficult

Active Publication Date: 2006-02-01
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method for synthesizing polyaluminum sulfate with waste catalyst, and utilize the polyaluminum sulfate product prepared by this method to develop a way to manage the waste catalyst of wax oil catalysis, so that it can be properly processed , reduce environmental pollution; at the same time overcome the shortage of environmental pollution caused by hydrochloric acid volatilization in the production process of polyaluminum chloride synthesized by hydrochloric acid

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  • Method for preparing synthesized polymer aluminum sulphate through spent catalyst

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preparation example Construction

[0016] 1. Preparation of aluminum sulfate

[0017] The factors affecting the dissolution rate of aluminum sulfate are mainly the concentration of sulfuric acid, the ratio of spent catalyst to sulfuric acid and the reaction temperature. The most significant factor affecting the dissolution rate of aluminum salt is the ratio of spent catalyst to sulfuric acid. According to many tests, the optimal reaction conditions were selected as follows: the concentration of sulfuric acid was 3%, and the reaction temperature was 85°C. The weight ratio of spent catalyst to sulfuric acid is preferably 1:10, and the reaction time is 1 hour.

[0018] 2. Preparation of polyaluminum sulfate liquid product

[0019] In the preparation of polyaluminum sulfate, the most significant factor affecting the polymerization is the equivalent ratio of aluminum sulfate and aluminum hydroxide. According to many tests, the optimal reaction conditions were selected as follows: when the equivalent ratio of alum...

Embodiment 1

[0020] Embodiment 1: (calculated by 100 grams of spent catalyst)

[0021] Add 100 grams of spent catalyst into a reactor with heating and stirring functions. Then add 1000 grams of sulfuric acid with a concentration of 3%, the reaction temperature is 85° C., and the reaction time is 1 hour. Filter to obtain liquid aluminum sulfate. Put the liquid aluminum sulfate back into the reactor, add 150 grams of 5% aluminum hydroxide, and stir for 1 hour to obtain 1120 grams of liquid polyaluminum sulfate product.

Embodiment 2

[0022] Embodiment 2: (calculated by 100 grams of spent catalyst)

[0023] Add 100 grams of wax oil catalytic waste catalyst in the reaction kettle with heating and stirring. Then add 600 grams of sulfuric acid with a concentration of 5%, the reaction temperature is 90° C., and the reaction time is 1 hour. Filter to obtain liquid aluminum sulfate. The liquid aluminum sulfate was put back into the reactor, and 230 milliliters of 7% aluminum hydroxide was added, and then stirred for 1 hour to obtain 800 grams of liquid polyaluminum sulfate product.

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Abstract

A process for preparing the polymerized aluminium sulfate by used of the used catalyst includes such steps as dissolving the used industrial catalyst in sulfuric acid to prepare aluminium sulfate, and polymerizing aluminium hydroxide with aluminium sulfate to obtain the polymerized aluminium sulfate used as flocculant.

Description

technical field [0001] The invention relates to a method for preparing inorganic macromolecular compounds by utilizing spent catalysts. More specifically, the present invention relates to a method for preparing polyaluminum sulfate by using wax oil in industrial waste catalysts to catalyze waste catalysts. Background technique [0002] The general formula of polyaluminum sulfate is [Al2(OH)n(SO4)3-n / 2]m(1≤n≤6, m≤10). The development and research of polyaluminum sulfate began in the late 1980s abroad. Started in the early 1990s. Wang Shicai et al. used aluminum sulfate and calcium hydroxide as raw materials to prepare polyaluminum sulfate at a certain temperature, and tested its flocculation performance. The results showed that: in the case of the same dosage, the flocculation effect of polyaluminum sulfate is better than Aluminum sulfate. Polyaluminum sulfate has a pH range of 5 to 9, and can be used in the flocculation treatment of drinking water, industrial water and mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/74
Inventor 张春燕汪涵段亚丽韩凤义朱宝莲王建军马克存刘雨红王薇郭桂悦尤丽梅王忠庆张树权张涛刘宏军李跃明郝丽刘永和柏晓红洪梅关海延李向富
Owner PETROCHINA CO LTD
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