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Boiler coal combustion-improving desulfurizing and denitrifying agent composition and preparation method thereof

A technology for desulfurization, denitrification and composition, which is applied to the preparation of boiler coal combustion-supported desulfurization and denitrification agent compositions, and the field of boiler coal combustion-supported desulfurization and denitrification agent compositions, which can solve the problems of low sulfur fixation and denitrification effects, high addition cost, and high addition amount. It can achieve the effect of changing the local oxygen deficiency, eliminating the coking at the tail of the furnace, and safely and fully burning

Active Publication Date: 2014-04-16
兰州熙瑞化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This kind of calcium-based, magnesium-based, barium-based sulfur-fixing and denitrification agent, its sulfur-fixing and denitrification reaction is in SO 2 , SO 3 There is a chemical reaction between NOx and metal oxides to generate sulfate and nitrate to achieve sulfur fixation and denitrification. Will produce secondary pollution; NaCO 3 , NaOH and other composite sulfur-fixing and denitrifying agent products, the NaSO generated during the combustion process of the boiler during sulfur fixation and denitrification 4 、NaNO 3 It is easily soluble in water and should not be used; for example, barium sulfate and barium nitrate will decompose sulfur and nitrogen oxides at 450-500 ° C, causing secondary pollution
The advantage of this kind of sulfur fixation and denitrification agent is that the production raw materials are easy to obtain, and the production cost is low; the disadvantage is that the addition amount is large, generally about 1.5%, the addition cost is high, and the sulfur fixation and denitrification effect is low, generally 30% sulfur fixation About 10% denitrification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054]Embodiment 1 At first, take raw material by following composition and weight: 3Kg sodium carbonate Na 2 CO 3 , 2Kg alumina Al 2 o 3 , 5Kg aluminum hydroxide Al(OH) 3 , 4Kg ferric chloride FeCl 3 , 5Kg ferric oxide Fe 2 o 3 , 8Kg potassium permanganate KMnO 4 , 8Kg potassium chlorate KClO 3 , 30Kg active attapulgite clay, 25Kg urea CON 2 h 4 , 3Kg ammonium formate HCOONH 4 , 2Kg ammonium chloride NH 4 Cl, 18Kg ammonium acetate CH 3 COONH 4 , 6Kg manganese oxide MnO 2 , 11Kg copper chloride CuCl 2 2H 2 O, 2Kg copper oxide CuO, 2Kg zinc sulfate ZnSO 4 ·7H 2 O, 2Kg zinc nitrate Zn(NO 3 ) 2 , 18Kg potassium dichromate K 2 Cr 2 o 7 , 1.2Kg titanium dioxide TiO 2 , 1Kg barium molybdate BaMoO 4 , 1Kg cobalt sulfate CoSO 4 ·7H 2 O, 1.5Kg vanadium pentoxide V 2 o 5 , 0.4Kg cerium oxide CeO 2 , 0.2Kg sodium dodecylbenzenesulfonate C 18 h 29 NaO 3 S with 0.2Kg alkyl glyceryl ether sulfonate.

[0055] Then, the above-mentioned raw materials are prepar...

Embodiment 2

[0062] Embodiment 2 At first, take raw material by following composition and weight: 7Kg sodium carbonate, 2Kg aluminum oxide, 7Kg aluminum hydroxide, 2Kg iron trichloride, 2Kg ferric oxide, 5Kg potassium permanganate, 5Kg potassium chlorate, 25Kg active attapulgite clay, 20Kg urea, 2Kg ammonium formate, 4Kg ammonium chloride, 10Kg ammonium acetate, 4Kg manganese oxide, 9Kg copper chloride, 3Kg copper oxide, 4Kg zinc sulfate, 1Kg zinc nitrate, 10Kg potassium dichromate, 1Kg Titanium dioxide, 0.8Kg barium molybdate, 1.5Kg cobalt sulfate, 0.5Kg vanadium pentoxide, 0.7Kg cerium oxide, 0.1Kg sodium dodecylbenzenesulfonate and 0.15Kg alkyl glyceryl ether sulfonate.

[0063] Then, the above-mentioned raw materials are prepared into boiler coal-fired combustion-supporting desulfurization and denitrification agent compositions according to the following steps:

[0064] 1. Mix the above-mentioned sodium carbonate, aluminum oxide, aluminum hydroxide, and ferric chloride evenly; then use...

Embodiment 3

[0070] Embodiment 3 At first, take raw material by following composition and weight: 2Kg sodium carbonate, 3Kg aluminum oxide, 8Kg aluminum hydroxide, 5Kg iron trichloride, 4Kg ferric oxide, 10Kg potassium permanganate, 3Kg potassium chlorate, 35Kg active attapulgite clay, 30Kg urea, 3Kg ammonium formate, 3Kg ammonium chloride, 23Kg ammonium acetate, 3Kg manganese oxide, 10Kg copper chloride, 3Kg copper oxide, 3Kg zinc sulfate, 3Kg zinc nitrate, 7Kg potassium dichromate, 1.5 Kg titanium dioxide, 0.5Kg barium molybdate, 0.5Kg cobalt sulfate, 1Kg vanadium pentoxide, 0.3Kg cerium oxide, 0.15Kg sodium dodecylbenzenesulfonate and 0.2Kg alkyl glyceryl ether sulfonate.

[0071] Then, the above-mentioned raw materials are prepared into boiler coal-fired combustion-supporting desulfurization and denitrification agent compositions according to the following steps:

[0072] 1. Mix the above-mentioned sodium carbonate, aluminum oxide, aluminum hydroxide, and ferric chloride evenly; then u...

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PUM

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Abstract

The invention provides a boiler coal combustion-improving desulfurizing and denitrifying agent composition. The composition comprises the following raw materials in parts by weight: 2-7 parts of sodium carbonate, 1-3 parts of alumina, 2-8 parts of aluminium hydroxide, 2-5 parts of ferric trichloride, 2-6 parts of ferric oxide, 3-10 parts of potassium permanganate, 3-10 parts of potassium chlorate, 10-35 parts of activated attapulgite clay, 15-30 parts of urea, 2-4 parts of ammonium formate, 2-4 parts of ammonium chloride, 6-23 parts of ammonium acetate, 3-9 parts of manganese oxide, 9-12 parts of copper chloride, 1-3 parts of copper oxide, 2-4 parts of zinc sulfate, 1-3 parts of zinc nitrate, 7-18 parts of potassium dichromate, 1.0-1.5 parts of titanium dioxide, 0.5-1.0 part of barium molybdate, 0.5-1.5 parts of cobalt sulfate, 0.5-1.5 parts of vanadium pentoxide, 0.3-0.7 part of cerium oxide, 0.1-0.2 part of sodium dodecyl benzene sulfonate and 0.1-0.2 part of alkyl glyceryl ether. The composition is convenient to use, has stable properties, plays roles of combustion improving, desulfurization and denitrification, has coal saving rate of 8-25% and can remove fixed sulfur by 50-70%.

Description

technical field [0001] The invention relates to an additive product suitable for use in coal-fired boilers in industries such as petroleum, chemical industry, electric power, thermoelectricity and metallurgy, in particular to a boiler coal-fired combustion-supporting desulfurization and denitrification agent composition. The invention also relates to boiler coal-fired combustion-supporting A preparation method of a desulfurization and denitration agent composition. Background technique [0002] my country's air pollution is serious. According to data estimates, the main air pollutants emitted by coal combustion, such as soot, SO 2 , NOx, CO 2 etc., the total amount accounts for about 96% of the total fuel combustion emissions. Among them, the S0 emitted by coal combustion 2 Accounting for 87% of the total emissions of various pollution sources, followed by NOx accounted for 6% of the total emissions of various pollution sources. SO 2 NOx and NOx are the main causes of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10C10L9/12
Inventor 刘瑞
Owner 兰州熙瑞化工科技有限公司
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