Technology for coproducing potassium alum and high-content lanthanum and cerium rare earth composite salt by using FCC waste catalyst

A technology of rare earth compound salt and waste catalyst, which is applied in the direction of rare earth metal compounds, aluminum compounds, aluminum sulfur compounds, etc., can solve the problems of secondary hazardous waste liquid and waste solid pollution, and achieve the promotion of recycling and reuse, saving water resources, Eliminate the effect of new waste liquid

Inactive Publication Date: 2019-12-13
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are pollution problems that bring secondary dangerous waste liquid and waste solid

Method used

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  • Technology for coproducing potassium alum and high-content lanthanum and cerium rare earth composite salt by using FCC waste catalyst

Examples

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Effect test

Embodiment 1

[0031] The technique of utilizing FCC waste catalyst to jointly prepare potassium alum and high-content lanthanum, cerium rare earth compound salt comprises the following steps:

[0032] 1. Pretreatment: Take a petrochemical company’s FCC waste catalyst (containing Al: 19.26%, Ni: 0.96%, La: 0.41%, Ce: 0.32%, Fe: 0.31%) and heat it in an oven for 2 hours at 200°C , after drying the water, take out the spent catalyst and cool it to room temperature, sieve with a 300-600 mesh sieve to remove large grains of stones, and obtain a fine powder spent catalyst.

[0033] 2. Leaching: Accurately weigh 100g of the spent FCC catalyst in step 1, measure 230ml of 6mol / 1 sulfuric acid solution into a 500ml three-neck flask, and fix it on a constant temperature water bath, connect an electric stirrer, start heating and stirring, When the set temperature reaches 90°C, add the prepared spent catalyst and continue to stir until 5 minutes before the set time, add 162ml of water (to facilitate fil...

Embodiment 2

[0039] The technique of utilizing FCC waste catalyst to jointly prepare potassium alum and high-content lanthanum, cerium rare earth compound salt comprises the following steps:

[0040] 1. Pretreatment: Take a petrochemical company’s FCC waste catalyst (containing Al: 19.26%, Ni: 0.96%, La: 0.41%, Ce: 0.32%, Fe: 0.31%) and heat it in an oven for 2 hours at 200°C , after drying the water, take out the spent catalyst and cool it to room temperature, sieve with a sieve (300-600 mesh) to remove large particle stones, and obtain a fine powder spent catalyst.

[0041] 2. Leaching: Accurately weigh 100g of the spent FCC catalyst in step 1, measure 220ml of 6mol / l sulfuric acid solution into a 500ml three-neck flask, and fix it on a constant temperature water bath, connect an electric stirrer, and stir at a speed of 400r / min , start heating and stirring, when the set temperature reaches 100°C, add the prepared waste catalyst and continue to stir until 5 minutes before the set time, a...

Embodiment 3

[0046] Embodiment 3 utilizes the technology of FCC waste catalyst to jointly prepare potassium alum and high-content lanthanum, cerium rare earth compound salt and comprises the steps:

[0047] 1. Pretreatment: Take a petrochemical company’s FCC waste catalyst (containing Al: 19.26%, Ni: 0.96%, La: 0.41%, Ce: 0.32%, Fe: 0.31%) and heat it in an oven for 2 hours at 200°C , after drying the water, take out the spent catalyst and cool it to room temperature, sieve with a 300-600 mesh sieve to remove large grains of stones, and obtain a fine powder spent catalyst.

[0048] 2. Leaching: Accurately weigh 100g of the spent FCC catalyst in step 1, measure 210ml of 6mol / l sulfuric acid solution into a 500ml three-necked flask, and fix it on a constant temperature water bath, connect an electric stirrer, and stir at a speed of 400r / min , start heating and stirring, when the set temperature reaches 70°C, add the prepared waste catalyst and continue to stir until 5 minutes before the set ...

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Abstract

The invention discloses a technology for coproducing potassium alum and a high-content lanthanum and cerium rare earth composite salt by utilizing an FCC waste catalyst. The technology comprises the following steps: (1) carrying out drying and screening pretreatment on the waste catalyst; 2) leaching the waste catalyst with sulfuric acid; 3) preparing the lanthanum and cerium rare earth compositesalt by a potassium hydroxide method; 4) preparing the potassium alum; and 5) treating a circulating liquid. The technology can achieve the preparation of the potassium alum and the high-content lanthanum and cerium rare earth composite salt and realize harmless and reduction treatment of hazardous wastes by treating the FCC waste catalyst, so a reasonable and effective way is found for the harmless treatment and comprehensive utilization of the FCC waste catalyst.

Description

technical field [0001] The invention belongs to the technical field of harmless treatment and resource recycling, and specifically relates to a process for jointly preparing potassium alum and high-content lanthanum and cerium rare earth compound salts by utilizing FCC waste catalysts. Background technique [0002] Catalytic cracking is an important part of modern petroleum refining industry, especially in China's refining industry. In the process of converting heavy oil into light oil through catalytic cracking, the help of catalyst is needed, and a large amount of spent catalyst (FCC) is produced every year. In 2016, China classified FCC waste catalysts into the HW50 hazardous solid waste in the "National Hazardous Waste List". If the precious secondary resource raw materials of elements can be recycled and reused reasonably, it can not only bring good social benefits, but also bring considerable economic benefits. Aluminum products are one of the important basic raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/76C01F17/00C02F9/04C08K11/00C08L23/06
CPCC01F7/762C02F1/001C02F1/66C08K11/005C08L2203/18C08L23/06
Inventor 杨高文赵亮王旭红张新孙鹏鹏
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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