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Pre-treatment method before regeneration of precious metal by waste catalyst

A waste catalyst and precious metal technology, which is applied in the field of pretreatment before the waste catalyst regenerates precious metals, can solve the problem of not involving comprehensive utilization of waste, and achieve the effect of saving raw materials and energy.

Inactive Publication Date: 2014-05-21
DALIAN DONGTAI INDAL WASTE TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After searching, there is currently no literature related to the comprehensive utilization of the above two wastes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Weigh raw materials: 150kg waste catalyst (hydrodesulfurization catalyst), 19kg waste toner, 14kg clay and 15kg water.

[0027] 2. Granulation: After mixing the waste toner and waste catalyst according to the ratio of step 1, stir slowly for 20 minutes, then add clay and water, continue mixing evenly, and then enter the granulator to granulate. The diameter of the pellets is 5 Between ~7cm. The staff enters the furnace and puts the finished raw materials in order to ensure that the bottom of the furnace is completely covered to prevent damage to the furnace body caused by partial dry burning, and then the upper cover is sealed for dry distillation; heating is started, and the temperature is raised from room temperature to 450°C and then kept warm After 2.5 hours, stop heating, and wait for the temperature to drop from 450°C to room temperature, and it is strictly forbidden to use water to directly cool down.

[0028] 3. After laboratory testing, the oil content of t...

Embodiment 2

[0030] 1. Weigh raw materials: 150kg spent catalyst (paraffin hydrogenation catalyst), 45kg spent toner powder, 45kg clay and 22.5kg water.

[0031] 2. Granulation: After mixing the waste toner and waste catalyst according to the ratio of step 1, stir slowly for 30 minutes, then add clay and water, continue mixing evenly, and then enter the granulator to granulate. The diameter of the pellets is 5 Between ~7cm. The staff enters the furnace and puts the finished raw materials in order to ensure that the bottom of the furnace is completely covered to prevent damage to the furnace body caused by partial dry burning, and then the upper cover is sealed for dry distillation; heating is started, and the temperature is raised from room temperature to 500°C and then kept warm After 3 hours, stop heating, and wait for the temperature to drop from 500°C to room temperature, and it is strictly forbidden to use water to directly cool down.

[0032] 3. After laboratory testing, the oil con...

Embodiment 3

[0034] 1. Weigh raw materials: 150kg waste catalyst (heavy oil catalytic cracking diesel hydrogenation catalyst), 3kg waste toner, 15kg clay and 15kg water.

[0035] 2. Granulation: After mixing the waste toner and waste catalyst according to the ratio of step 1, stir slowly for 10 minutes, then add clay and water, continue mixing evenly, and then enter the granulator to granulate. The diameter of the pellets is 5 Between ~7cm. The staff enters the furnace and puts the finished raw materials in order to ensure that the bottom of the furnace is completely covered to prevent damage to the furnace body caused by partial dry burning, and then the upper cover is sealed for dry distillation; heating is started, and the temperature is raised from room temperature to 400°C and then kept warm After 2 hours, stop heating, and wait for the temperature to drop from 400°C to room temperature, and it is strictly forbidden to use water to directly cool down.

[0036] 3. After laboratory tes...

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Abstract

The invention discloses a pre-treatment method before regeneration of precious metal by a waste catalyst. According to the technical scheme, the method comprises the following steps of: respectively weighing raw materials in a mass ratio of a waste catalyst to waste ink powder to an adhesive to water of (5-10):(0.1-3):(0.5-3):(0.5-1.5); integrating the waste ink powder and the waste catalyst by using the adhesive to pelletize; and performing dry distillation on a mixed component to obtain dry distilled oil so as to provide pre-treatment for the regeneration of the previous metal of the waste catalyst. During dry distillation, the dry distilled oil can be used as a regenerative fuel, the generated dry distilled gas can be used as fuel to directly act upon a dry distillation furnace; and generated dry distilled slag is used as a raw material for regenerating the precious metal by the waste catalyst, so that the method has a wide application prospect on industry.

Description

technical field [0001] The invention specifically relates to a pretreatment method for spent catalysts before regenerating precious metals. Background technique [0002] To regenerate precious metals from spent catalysts, it is first necessary to remove oil stains on the surface. Oil stains will hinder the regeneration of precious metals. At the same time, waste toner contains iron and other organic combustible components. Its main characteristics are small particles, easy to raise dust, and difficult to handle. The mixed granulation of toner and catalyst can be processed directly in the dry distillation furnace, so that the combustible components in the catalyst and toner can be removed, and the combustible gas and liquid obtained by dry distillation can be used as fuel for dry distillation. In the present invention, the waste toner and the waste catalyst are bonded together through an adhesive, and then dry distillation is performed, on the one hand, it provides pretreatme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/00C22B7/00C22B11/00C10G1/00
CPCY02P10/20
Inventor 李俊高麒麟刘晶李新磊张秋玲蔡钊荣盖世男华庆亮姚晓琳刘佳丽官香元陈刚
Owner DALIAN DONGTAI INDAL WASTE TREATMENT
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