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Stabilization chemical agent and processing method for processing nickel-containing dead catalyst

A technology of waste catalyst and treatment method, applied in the direction of protection device against harmful chemical agents, etc., can solve problems such as environmental pollution, and achieve the effect of good stabilization effect, cost reduction, direct material cost and landfill cost reduction.

Inactive Publication Date: 2014-06-18
南京市生态环境保护科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the heavy metal content, if the spent catalyst is not treated and discharged directly, it will cause environmental pollution

Method used

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  • Stabilization chemical agent and processing method for processing nickel-containing dead catalyst
  • Stabilization chemical agent and processing method for processing nickel-containing dead catalyst
  • Stabilization chemical agent and processing method for processing nickel-containing dead catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The processing of embodiment 1 nickel-containing waste catalyst

[0034] First, a stabilizing agent composed of artificial zeolite and potassium ethyl xanthate at a mass ratio of 15-25:1 is used.

[0035] Then, process the nickel-containing waste catalyst according to the following steps: first step, weigh the nickel-containing waste catalyst with a belt scale and put it into the feeding hopper; follow-up steps determine the dosage of the agent accordingly.

[0036] The second step, if the spent nickel-containing catalyst is in the form of uniform fine particles, proceed to the next step directly; if the spent nickel-containing catalyst is in the form of non-uniform, first process the spent nickel-containing catalyst to be in the form of uniform fine particles before proceeding to the next step ( This treatment can be crushing, sieving, vibration crushing and other existing technical means); this can ensure that the stabilizing agent can fully contact and react with the...

Embodiment 2 Embodiment 1

[0044] The comparison of embodiment 2 embodiment 1 method and traditional cement curing method

[0045] The same batch of nickel-containing waste catalysts is processed by the method of embodiment 1 and the traditional cement solidification method respectively, and the nickel leaching concentration and the nickel leaching concentration of the products obtained by each method are detected according to the method specified in the national standard GB18598-2001 "Hazardous Waste Landfill Control Standard", and The nickel leaching concentration of each method gained product in pH2-12, the result is as follows image 3 , Figure 4 shown.

[0046] Such as image 3 As shown, the national standard GB18598-2001 "Hazardous Waste Landfill Control Standard" control limit value stipulates that the nickel leaching concentration control limit is 15mg / L, and the nickel leaching concentration of the nickel-containing waste catalyst before treatment is close to 20mg / L, and the cement solidific...

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Abstract

The invention relates to a stabilization chemical agent and a processing method for processing a nickel-containing dead catalyst. The chemical agent comprises artificial zeolite and potassium ethyl xanthate according to a mass ratio of (15-25): 1. The processing method comprises the following steps: weighing, conveying, performing stirring stabilization, and landfilling after discharging. According to the processing method, a conventional stabilization / solidification technology can be replaced and the enlargement ratio can be reduced to the maximum extent while the stabilization / solidification effect is guaranteed.

Description

technical field [0001] The invention relates to a stabilizing medicament for treating waste nickel-containing catalysts and a treatment method for waste nickel-containing catalysts using the medicament, belonging to the technical field of solid waste treatment. Background technique [0002] To the applicant's knowledge, the main method currently used to treat hazardous waste is immobilization / stabilization technology. Among them, solidification technology is to use physical or chemical methods to mix hazardous waste with some inert substrates that can coalesce into solids, so that solid wastes are fixed or contained in inert solid substrates, making them chemically stable or sealed A harmless treatment technology; stabilization technology refers to the process of coagulating with stabilizers and solid agents to contain or cover toxic substances or hazardous waste particles. In practice, curing and stabilization techniques are usually not clearly separated, so they are colle...

Claims

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Application Information

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IPC IPC(8): A62D3/33A62D101/43
Inventor 卜现亭俞欣朱小曼高小杰王丽媛
Owner 南京市生态环境保护科学研究院
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