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A kind of high sulfur capacity zinc oxide fine desulfurizer and preparation method thereof

A technology of zinc oxide and fine desulfurization, which is applied in the direction of chemical instruments and methods, separation methods, and dispersed particle separation, etc. Wear and other problems, to achieve the effect of more active sites, increase the sulfur capacity, and increase the reaction rate

Active Publication Date: 2018-08-21
HUNAN HUANDA ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies in the prior art, the present invention provides a high-sulfur-capacity zinc oxide concentrate that does not need to add additives and various inactive components (ie, pore-forming agents, extrusion aids, lubricants) and has a high proportion of active components. A desulfurizing agent and its preparation method. At the same time, the method can avoid the reduction of the sulfur capacity and desulfurization precision of the desulfurizing agent due to the small pore volume of the desulfurizing agent caused by the uneven mixing of raw materials, the dry material is easy to wear and tear the extrusion equipment, and the extruded product is easy to loosen and crack. question

Method used

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  • A kind of high sulfur capacity zinc oxide fine desulfurizer and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0039] The preparation process of the fine desulfurizer in the present embodiment comprises the following steps:

[0040] S1: sieve commercially available zinc oxide through a vibrating sieve, and collect the raw material powder with a bulk density of 0.30kg / l after sieving for subsequent use; the raw material powder collected by the micropowder collection system (hereinafter referred to as the collected raw material powder) is shaken The sieve is sieved, and the raw material powder with a bulk density of 0.16kg / l after sieving is collected for use;

[0041] S2: 94 parts by weight of commercially available zinc oxide after sieving and 2.5 parts by weight of raw material powder collected for standby are added to the hopper mixer for mixing, the mixing speed is 10 rpm, and the mixing time is 25 minutes.

[0042] S3: adding the material after S2 mixing and kaolin to the kneader according to the weight ratio of 96.5:3.5, mixing, stirring and kneading at room temperature for 30 min...

Embodiment 2

[0047] The preparation process of the fine desulfurizer in the present embodiment comprises the following steps:

[0048] S1: sieve commercially available zinc oxide through a vibrating sieve, and collect the raw material powder with a bulk density of 0.38kg / l after sieving for subsequent use; the raw material powder collected by the micropowder collection system (hereinafter referred to as the collected raw material powder) is shaken The sieve is sieved, and the raw material powder with a bulk density of 0.20kg / l after sieving is collected for use;

[0049] S2: 95 parts by weight of commercially available zinc oxide after sieving and 2 parts by weight of raw material powder collected for standby are added to the hopper mixer for mixing, the mixing speed is 15 rpm, and the mixing time is 30 minutes.

[0050] S3: add the material mixed in S2 and the clay into the kneader according to the weight ratio of 97:3, mix, stir and knead at room temperature for 30 minutes, and add 2.5% ...

Embodiment 3

[0055] The preparation process of the fine desulfurizer in the present embodiment comprises the following steps:

[0056] S1: sieve commercially available zinc oxide through a vibrating sieve, and collect the raw material powder with a bulk density of 0.30kg / l after sieving for subsequent use; the raw material powder collected by the micropowder collection system (hereinafter referred to as the collected raw material powder) is shaken The sieve is sieved, and the raw material powder with a bulk density of 0.12 kg / l after sieving is collected for use;

[0057] S2: 97 parts by weight of commercially available zinc oxide after sieving and 1.5 parts by weight of raw material powder collected for standby are added to the hopper mixer for mixing, the mixing speed is 15 rpm, and the mixing time is 35 minutes.

[0058] S3: add the material after S2 mixing and cement into the kneader according to the weight ratio of 98.5:1.5, mix, stir and knead at room temperature for 35 minutes, add ...

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Abstract

The invention relates to a high sulfur capacity zinc oxide fine desulfurizer, which is prepared from the following raw materials in parts by weight: 90-98 parts of activated zinc oxide powder and 2-8parts of an adhesive, wherein the activated zinc oxide powder is prepared from activated zinc oxide powder A and activated zinc oxide powder B; the mass of the activated zinc oxide powder A accounts for 92-98% of the total mass of the activated zinc oxide powder, the zinc oxide content of the activated zinc oxide powder A is 92-95%, and the bulk density of the activated zinc oxide powder A is 0.25-0.40kg / l; the mass of the activated zinc oxide powder B accounts for 2-8% of the total mass of the activated zinc oxide powder, the zinc oxide content of the activated zinc oxide powder B is 85-90%,and the bulk density of the activated zinc oxide powder B is 0.10-0.25kg / l. The high sulfur capacity zinc oxide fine desulfurizer solves the problems that in the existing wet-mixing-kneading method, the processing, structure and performance of a desulfurizer are not ideal or have defects since raw materials are not easy to evenly mix. The high sulfur capacity zinc oxide fine desulfurizer is only prepared from the two components, and additives, a pore-forming agent, an extrusion aid and a lubricant do not need to be added in a preparation process; the high sulfur capacity zinc oxide fine desulfurizer is high in activated zinc oxide content, more in active sites and high in dispersity; under certain working conditions, H2S breakthrough sulfur capacity of the zinc oxide fine desulfurizer reaches up to 30%, and desulfurization accuracy of the zinc oxide fine desulfurizer is less than or equal to 0.03ppm.

Description

technical field [0001] The invention relates to a high-sulfur-capacity zinc oxide fine desulfurizer and a preparation method thereof, belonging to the technical field of gas purification. Background technique [0002] Desulfurizers are used to remove free sulfur or sulfide in fuels, raw materials or gas materials, and are widely used in petrochemical, coal chemical, fertilizer, environmental protection and other industries. There are many types of desulfurizer products in the prior art, which can be divided into activated carbon desulfurizers, molecular sieve desulfurizers, manganese oxide desulfurizers, iron oxide desulfurizers, and zinc oxide desulfurizers according to the active components they contain. [0003] Compared with the above-mentioned various desulfurizers, zinc oxide desulfurizers have the characteristics of good desulfurization effect, easy use, stable performance, and relatively loose requirements for process conditions. The preparation method of zinc oxide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/82B01D53/52
Inventor 彭奔彭晓虎钟武邱树梁廖怡安蒋波
Owner HUNAN HUANDA ENVIRONMENTAL PROTECTION
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