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Desulphurizing and denitrating composite carbon slurry

A technology for desulfurization, denitrification, and composite carbon, which is applied in liquid carbon-containing fuels, petroleum industry, fuels, etc., and can solve the problems of low desulfurization agent efficiency, unsatisfactory desulfurization effect, and low denitration rate.

Active Publication Date: 2015-07-22
QINGDAO CLEAR ENVIRONMENT PROTECTION BOILER ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The denitrification process in the prior art has high requirements on the control of reaction temperature, that is, only when it is in the range of 900-1100 °C, can it achieve the purpose of high efficiency and no secondary pollution. The denitrification rate is low, only 30~50%
The desulfurization technology in the prior art is to add a desulfurizer to the solid coal block, but due to the low water content of the coal block during the combustion process, the efficiency of the desulfurizer is low, and the desulfurization effect is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In parts by weight, mix 65 parts of coal base, 31.6 parts of water, 0.3 parts of naphthalene sulfonate, 0.1 part of ferrous sulfate, and 2 parts of calcium carbonate. Mix the above components and stir them with a stirring machine to make each component mix evenly , The weight percent of each component formed is 65% of coal base, 31.6% of water, 0.3% of naphthalene sulfonate, 0.1% of ferrous sulfate, and 2% of calcium carbonate. Add 1 part of urea during use, that is, the weight percentage of urea is 1%.

[0016] After the above-mentioned desulfurization and denitrification composite carbon slurry is burned, the flue gas generated is analyzed. The results show that the denitrification rate of the exhausted flue gas is as high as 70.1%, and the desulfurization rate is as high as 67.5%.

Embodiment 2

[0018] The difference between this embodiment and Example 1 is 65 parts of coal base, 30.2 parts of water, 0.5 part of naphthalene sulfonate, 0.3 part of sodium carboxymethyl cellulose, and 3 parts of calcium carbonate. The weight percentage of each component formed is coal Base 65%, water 30.2%, naphthalene sulfonate 0.5%, sodium carboxymethyl cellulose 0.3%, calcium carbonate 3%. Add 1 part of ammonia water when in use, that is, the weight percentage that ammonia water accounts for is 1%.

[0019] After the above-mentioned desulfurization and denitrification composite carbon slurry is burned, the flue gas produced is analyzed. The results show that the denitrification rate of the exhausted flue gas is as high as 71.5%, and the desulfurization rate is as high as 69.3%.

Embodiment 3

[0021] The difference between this embodiment and Example 1 is 65 parts of coal base, 30.9 parts of water, 0.4 part of naphthalenesulfonate, 0.2 part of ferrous sulfate, 2.5 parts of calcium carbonate, and the weight percentage of each component formed is 65% of coal base , water 30.9%, naphthalene sulfonate 0.4%, ferrous sulfate 0.2%, calcium carbonate 2.5%. Add 1 part of ammonia water when in use, that is, the weight percentage that ammonia water accounts for is 1%.

[0022] After the above-mentioned desulfurization and denitrification composite coal slurry is burned, the flue gas generated is analyzed. The results show that the denitrification rate of the discharged flue gas is as high as 73.2%, and the desulfurization rate is as high as 70.1%.

[0023] It can be clearly seen from the above examples that, compared with the prior art, the desulfurization and denitrification composite coal slurry provided by the present invention achieves obvious desulfurization and denitrifi...

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Abstract

The invention relates to a fuel for a boiler, specifically to a composite carbon slurry with desulphurizing and denitrating functions. To overcome technical problems in the prior art, the invention provides a desulphurizing and denitrating composite carbon slurry which has desulphurizing and denitrating functions and can improve desulphurization and denitration effects. According to a technical scheme in the invention, the desulphurizing and denitrating composite carbon slurry comprises the following components by weight: 65% of a coal base, 29 to 32% of water, 0.3 to 0.5% of a dispersant, 0.1 to 0.3% of a stabilizing agent, 2 to 3% of a desulphurization agent and 1% of a denitration agent The invention has the following beneficial effects: during combustion, the composite carbon slurry realizes desulphurization and denitration effects; extra denitration procedure is not needed; and the desulphurization and denitration effects are obviously better than those in the prior art.

Description

technical field [0001] The invention relates to a fuel used in a boiler, in particular to a composite carbon slurry with desulfurization and denitrification functions. Background technique [0002] Composite carbon slurry is a composite fluid fuel that is composed of 65% coal base, 29% water, and 6% functional agent; it can burn efficiently and cleanly, and reduce pollutant emissions. The carbon base in the coal is crushed and ground, and under the action of the dispersant, it forms a solid-liquid phase fluid with water; under the action of the stabilizer, the precipitation speed of the solid phase particles is delayed; The solid-liquid homogeneous mixed slurry formed by carbon particles and water under the combined action is the matrix of composite carbon paste. Adding desulfurization or denitrification functional agent on this basis is desulfurization or denitrification composite carbon slurry, or adding two functional agents at the same time is called desulfurization and...

Claims

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Application Information

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IPC IPC(8): C10L1/32C10L1/24C10L1/222C10L1/192C10L1/12
Inventor 杨成孙云国吴春娟
Owner QINGDAO CLEAR ENVIRONMENT PROTECTION BOILER ENG
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