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A kind of strip desulfurizer and preparation method thereof

A desulfurizing agent and strip-shaped technology, which is applied in the field of strip-shaped desulfurizing agent and its preparation, can solve the problems of low dispersion of binder, excessive bed pressure drop, pulverization of desulfurizing agent, etc., and reduce the resistance to crushing Effect of force difference coefficient, improvement of uniformity, and improvement of dispersion

Active Publication Date: 2020-09-08
HUNAN HUANDA ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the prior art documents (including the above cited patents), the detection results of the crush resistance of strip desulfurizers only give an arithmetic mean value. Specifically, for each sample, 30 to 100 strip desulfurizers are first measured. The crush resistance of the desulfurizer, and then take their arithmetic mean value, the main disadvantage of this method is that the difference (or uniformity) of the mechanical strength (ie, crush resistance) of the same batch of strip desulfurizers cannot be known, that is, it cannot be determined In the case that the average mechanical strength of the same batch of products has reached the standard, is there still a considerable number of desulfurizers whose mechanical strength does not meet the standard?
For the existing technology, even if a certain amount of binder is added to improve the arithmetic mean of the crush resistance of the strip desulfurizer, due to the ) mixed unevenly, binder dispersion is not high, and factors affecting extrusion molding (such as raw material powder properties and particle size) are not properly controlled and other reasons, the mechanical strength of the prepared strip desulfurizer Poor uniformity (this is also a problem that most manufacturers easily ignore or do not pay enough attention to), resulting in a series of problems caused by the low mechanical strength of the desulfurizer mentioned above: the desulfurizer is broken and worn, As a result, the desulfurization effect of the desulfurization agent is affected, and the desulfurization agent is seriously pulverized, resulting in an excessive pressure drop in the bed layer, and forcing the desulfurization device to stop abnormally

Method used

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  • A kind of strip desulfurizer and preparation method thereof
  • A kind of strip desulfurizer and preparation method thereof
  • A kind of strip desulfurizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] S1: Take 100 g of active zinc oxide powder and sage green powder respectively, and measure their moisture content (see Table 1 for test results). Evenly inject 2%wt steam into the active zinc oxide powder, bake the scallop powder in an oven for 1 hour, and the baking temperature is 80°C;

[0038] S2: Take a certain amount of active zinc oxide powder and scallop powder and fill them freely in a 100ml measuring cylinder respectively, and measure their bulk density (see Table 1 for test results). The active zinc oxide powder was pulverized with a ball mill for 2.5 hours, and the bulk density detection results of the active zinc oxide powder after ball milling were shown in Table 1;

[0039] S3: the activated zinc oxide powder and the safflower powder processed by S1 and S2 are added into a double-cone mixer in a weight ratio of 97:3 and mixed, and the mixing time is 1 hour;

[0040] S4: Add the active zinc oxide powder and squat powder mixed in S3 into a mixer mill for st...

Embodiment 2

[0043] S1: Take 100 g of basic zinc carbonate powder and kaolin powder respectively, and measure their moisture content (see Table 1 for test results). Evenly feed 1%wt steam into the basic zinc carbonate powder;

[0044] S2: Get a certain amount of basic zinc carbonate powder and kaolin powder and freely fill in a 100ml graduated cylinder respectively, and measure its bulk density (test results are shown in Table 1). This basic zinc carbonate powder and bulk density are that 0.40 basic zinc carbonate powder is mixed by the weight ratio of 1:2, and the bulk density detection result of the basic zinc carbonate powder after mixing is shown in Table 1;

[0045] S3: the basic zinc carbonate powder and kaolin powder processed by S1 and S2 are added into a double-cone mixer in a weight ratio of 95:5 and mixed, and the mixing time is 1.5 hours;

[0046] S4: Add the basic zinc carbonate powder and kaolin powder mixed in S3 into a mixer mill for stirring, rolling, and kneading for 30 ...

Embodiment 3

[0049] S1: Take calcium oxide powder and Portland cement powder respectively, and measure their moisture content (see Table 1 for test results). Evenly inject 1%wt steam into the Portland cement powder, bake the calcium oxide powder in an oven for 1.5 hours, and the baking temperature is 90°C;

[0050] S2: Get a certain amount of calcium oxide powder and Portland cement powder and freely fill in 100ml measuring cylinder respectively, record its bulk density (test results are shown in Table 1);

[0051] S3: the calcium oxide powder and Portland cement powder after S1, S2 treatment are added in the double-cone mixer by the weight ratio of 70:30 and mixed, and the mixing time is 2 hours;

[0052] S4: Add the calcium oxide powder and Portland cement powder mixed in S3 into a mixer mill for stirring, rolling, and kneading for 60 minutes. During the mixing process, 2% wt of the total amount of raw material powder is added to make the raw material powder Grind into a paste or mud; ...

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Abstract

The invention relates to a strip desulfurizing agent and a preparation method thereof. The preparation method comprises the following steps: respectively determining the water content of all raw material powder, comparing the water content and adjusting the water contents of the all the raw material powder within the optimal range of the water content; respectively determining the bulk density ofall the raw material powder, comparing the bulk density of all the raw material powder and adjusting the bulk density of all the raw material powder within the corresponding optimal range of the bulkdensity of all the raw material powder; according to the ratio of the raw materials of the strip desulfurizing agent, mixing all the raw material powder, milling the mixed raw material powder and extruding the milled raw material powder into strips, and then sequentially drying and roasting the strips, so as to obtain a finished product strip desulfurizing agent. According to the preparation method, through the synergism of effects achieved by control on the water content and the bulk density of the raw material powder, the diversity factor of crushing strength of the strip desulfurizing agentproduct is greatly decreased, and the quality of the strip desulfurizing agent product is improved.

Description

technical field [0001] The invention relates to a strip-shaped desulfurizer and a preparation method thereof, in particular to a strip-shaped desulfurizer with a low coefficient of difference in crush resistance 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. The geometric shapes of common desulfurizers are strip, cylinder, spherical, clover, flake, powder, honeycomb, microsphere, etc. In the field of desulfurization and purification engineering applications, fixed bed reactors generally use strip, cylindrical, sheet and clover-like desulfurizers, and fluidized bed reactors mostly use microsphere catalysts. [0003] Desulfurizers will be subjected to several different forms of force during industria...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/06B01J23/02B01J37/00B01J37/04B01D53/86B01D53/48
CPCB01D53/8603B01J23/02B01J23/06B01J37/0027B01J37/0036B01J37/04
Inventor 彭奔彭晓虎钟武邱树梁李斯廖怡安蒋波
Owner HUNAN HUANDA ENVIRONMENTAL PROTECTION
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