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Preparation method of copper sulfide demercuration agent

A copper sulfide and mercury removal technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of harsh reaction conditions, complicated process steps, and inability to mix sol A and thiourea solution, etc., to increase the load effect, the effect of increasing the load

Active Publication Date: 2015-12-09
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Another technical problem to be solved by the present invention is that the sol A and thiourea solution of the prior art cannot be mixed in advance before the reaction, and the raw material system of the prior art requires high temperature and high pressure reaction conditions, which makes the existing process steps complicated and difficult to react. The conditions are harsh, and a preparation method of copper sulfide mercury removal agent with simple steps and no need for high temperature and high pressure reaction conditions is proposed

Method used

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  • Preparation method of copper sulfide demercuration agent
  • Preparation method of copper sulfide demercuration agent

Examples

Experimental program
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Effect test

Embodiment 1

[0029] (1) Mix 5L, 0.2mol / L copper nitrate solution with 5L, 0.2mol / L ethylenediamine solution, then add 2L, 5mol / L ammonia water and mix to obtain a premixed solution;

[0030] (2) Add 5 L, 0.2 mol / L thiourea solution to the premixed solution and mix evenly to obtain an impregnation solution;

[0031] (3) Immerse 1 kg of alumina carrier in the impregnation solution at 0°C for 3 hours, drain for 30 minutes, activate at 95°C for 1 hour, and then dry at 105°C for 5 hours to obtain mercury removal agent 1, whose XRD spectrum is shown in figure 1 .

Embodiment 2

[0033] (1) Mix 2L, 0.6mol / L copper chloride solution with 2L, 1.5mol / L ethylenediamine solution, then add 2L, 0.6mol / L ammonia water and mix to obtain a premixed solution;

[0034] (2) Add 2 L, 1.2 mol / L thiourea solution to the premixed solution and mix evenly to obtain an impregnation solution;

[0035] (3) Immerse 1 kg of activated carbon carrier in the impregnation solution at 30° C. for 0.5 h, drain for 1 h, activate at 60° C. for 5 h, and then dry at 120° C. for 1 h to obtain mercury removal agent 2.

Embodiment 3

[0037] (1) Mix 2L, 0.5mol / L copper acetate solution with 1L, 1mol / L ethylenediamine solution evenly, then add 2L, 4mol / L ammonia water and mix to obtain a premixed solution;

[0038] (2) Add 1.5L, 1mol / L thiourea solution to the premixed solution and mix evenly to obtain an impregnation solution;

[0039] (3) Immerse 1 kg of 5A molecular sieve in the impregnation solution at 25°C for 2 hours, drain for 1 hour, activate at 80°C for 4 hours, and then dry at 110°C for 3 hours to obtain mercury removal agent 3.

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Abstract

The invention discloses a preparation method of a copper sulfide demercuration agent. The method comprises the following steps: 1, uniformly mixing a soluble copper salt solution with an ethylene diamine solution, adding ammonia water, and mixing to obtain a premix solution, wherein a molar ratio of the copper salt to the ethylene diamine solution to ammonia water is 1:(1-2.5):(1-10); 2, adding the premix solution to a thiourea solution, and uniformly mixing to obtain an impregnation solution; and 3, immersing a carrier in the impregnation, draining, activating at 60-95DEG C for 1-5h, and drying. The content of copper sulfide in the prepared demercuration agent is 100%, the demercuration agent has no impurities, and the preparation method has the advantages of simplicity and easy realization of reaction conditions.

Description

technical field [0001] The invention relates to a method for preparing a copper sulfide mercury removal agent, and belongs to the technical field of mercury removal agent preparation. Background technique [0002] Mercury is highly toxic, volatile, persistent and biologically deposited. In industrial production, waste gas containing mercury will be emitted during the processing of coal, oil and natural gas. The most concerned atmospheric toxic pollutants. Mercury causes great harm to organisms and the environment. This is because a large amount of mercury in the exhaust gas enters the water body through deposition, and the organism absorbs the mercury in the water body and reacts in the body to form highly toxic methylmercury. The sulfhydryl group of the enzyme combines to form a thiolate, which inhibits the activity of the enzyme and destroys the basic metabolic functions of biological cells; in addition, methylmercury can also change the permeability of the cell, destroy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/64
Inventor 刘振义李新成峻青
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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