A kind of preparation method of copper sulfide mercury removal agent

A copper sulfide and mercury removal technology, which is applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of mercury removal accuracy, high bulk density, toxicity and odor of residual sulfides, and improve mercury removal activity, The large pore structure increases the contact probability

Active Publication Date: 2017-10-03
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

[0005] The technical problem to be solved by the present invention is to overcome the problems of poisonous taste and residual vulcanizing agent existing in the preparation of copper sulfide mercury removal agent in the prior art and the accuracy of mercury removal in the copper sulfide mercury removal agent prepared by the existing technology. Poor mercury content, small mercury capacity, and large bulk density, and then provide a green and environmentally friendly preparation method for copper sulfide mercury removal agent with high mercury removal accuracy, large mercury capacity, and small bulk density

Method used

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  • A kind of preparation method of copper sulfide mercury removal agent

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Embodiment 1

[0028] The preparation method of the copper sulfide mercury removal agent described in the present embodiment comprises the following steps:

[0029] (1) Copper sulfide powder with a mass ratio of 1:8:1, Y-Al 2 o 3 Mix with cement evenly to form a mixture, in which the copper sulfide powder has a grain size of 11-30nm and a particle size of 150 mesh, Y-Al 2 o 3 The particle size of the carrier is 300 mesh and the specific surface area is 160m 2 / g, the pore volume is 0.35ml / g, and the particle size of cement is 120 mesh;

[0030] (2) The mixture is placed in a sugar coating machine to roll, and sprayed into a CMC aqueous solution with a mass concentration of 1%, the addition of the CMC aqueous solution is determined according to the size of the ball and the degree of surface dryness, and the consumption of the CMC aqueous solution is the mixture in the present embodiment. 20% of the mass, the spherical object is obtained by rolling ball molding;

[0031] (3) Drying the sp...

Embodiment 2

[0035] The preparation method of the copper sulfide mercury removal agent described in the present embodiment comprises the following steps:

[0036] (1) Mix copper sulfide powder, activated carbon and Portland cement with a mass ratio of 5:90:5 to form a mixture, wherein the copper sulfide powder has a grain size of 30-50 nm and a particle size of 120 mesh, and the activated carbon The particle size of the carrier is 250 mesh and the specific surface area is 980m 2 / g, the pore volume is 0.52ml / g, and the particle size of Portland cement is 150 mesh;

[0037](2) the mixture is placed in a sugar coating machine to roll, and sprayed into a CMC aqueous solution with a mass concentration of 5%, the addition of the CMC aqueous solution is determined according to the size of the ball and the degree of surface dryness, and the consumption of the CMC aqueous solution is the mixture in the present embodiment. 30% of the mass, the spherical object is obtained by rolling ball molding; ...

Embodiment 3

[0040] The preparation method of the copper sulfide mercury removal agent described in the present embodiment comprises the following steps:

[0041] (1) Mix copper sulfide powder, molecular sieve and Portland cement with a mass ratio of 2:7:3 to form a mixture, wherein the copper sulfide powder has a grain size of 80-90nm and a particle size of 200 mesh, molecular sieve The particle size of the carrier is 350 mesh and the specific surface area is 380m 2 / g, the pore volume is 0.33ml / g, and the particle size of Portland cement is 200 mesh;

[0042] (2) The mixture is placed in a sugar coating machine and rolled, and sprayed into a CMC aqueous solution with a mass concentration of 3%. The amount of the CMC aqueous solution is determined according to the size of the ball and the degree of surface dryness. In this embodiment, the consumption of the CMC aqueous solution is the mixture 40% of the mass, the spherical object is obtained by rolling ball molding;

[0043] (3) Drying ...

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Abstract

The invention provides a preparation method of a copper sulphide mercury removal agent. the preparation method comprises the following steps: mixing copper sulphide powder, a powdery carrier and an inorganic binder to form a mixture; spraying an organic binder aqueous solution into the mixture and rolling to form a ball; and drying the ball. By using copper sulphide with specific grain size and granularity as a raw material, on one hand, use of a vulcanizing agent is avoided so as to thoroughly solve problems of high toxicity, unbearable smell and residual vulcanizing agent existing in the preparation process of the copper sulphide mercury removal agent; and on the other hand, it is beneficial to increase active sites so as to make the mercury removal agent show excellent mercury removal activity. By the rolling mode, the active component is uniformly dispersed onto the surface of the carrier, and it is ensured that the mercury removal agent has a proper porous structure and as large specific surface area as possible. Thus, it helps raise mercury removal precision and mercury volume of the mercury removal agent and reduce bulk density of the mercury removal agent, and service life of the mercury removal agent is prolonged. Mercury removal cost is then reduced greatly.

Description

technical field [0001] The invention relates to the technical field of mercury removal agents, in particular to a preparation method of a copper sulfide mercury removal agent. Background technique [0002] As we all know, mercury is a toxic substance, because of its cumulative effect in organisms and its difficult to degrade, the problem of mercury pollution has received more and more attention. At present, the mercury in the atmosphere mainly comes from the discharge of coal burning and waste incineration. At the same time, mercury is widely used in industry, such as the release of mercury vapor in the production processes of metallurgy, electronics, and chemical industry. There are three main forms of mercury, which are gaseous elemental mercury (Hg 0 ), oxidized mercury (Hg 2+ ) and particulate mercury (Hg P ), of which particulate mercury (Hg p ) can be removed by particulate control equipment, oxidized mercury (Hg 2+ ) can be wet scrubbed or SO 2 The control equip...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/64
CPCB01D53/64B01D2257/602
Inventor 李新成峻青王春艳樊俐
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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