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

The technology of a denitrification agent and a composition is applied in the field of preparation of coal-fired combustion-supporting denitration agent compositions for boilers, and boiler coal-fired combustion-supporting denitrification agent compositions, and can solve the problems of inconsistent reaction rate sulfur precipitation rate, low utilization rate of solid sulfur denitrification agent, The problem of low utilization of alkaline substances, etc., can increase the active specific surface area, promote the reaction, and stabilize the performance.

Active Publication Date: 2013-07-10
GANSU HEIMA PETROCHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used sulfur-fixing denitrification agents are mainly calcium-based sulfur-fixing denitrification agents. The disadvantages are that the utilization rate of sulfur-fixing denitrification agents is low, the reaction rate of sulfur-fixing denitrification is inconsistent with the rate of sulfur precipitation, and the formation of sulfur-fixing denitrification products at high temperatures Re-decomposition
The addition amount is generally about 1.5%. If the addition amount is large, the utilization rate of alkaline substances in sulfur fixation and denitrification is low. On the contrary, the cost of desulfurization and denitrification is too high, and the sulfate and nitrate generated by the reaction of alkaline substances are easy t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 At first, take raw material by following composition and weight: 4kg sodium carbonate Na 2 CO 3 , 4kg aluminum hydroxide Al(OH) 3 , 3kg ferric chloride FeCl 3 , 12kg urea CH 4 N 2 O, 7kg ammonium carbonate (NH 4 ) 2 CO 3 , 6kg ammonium chloride NH 4 Cl, 5kg ferric oxide Fe 2 o 3 , 18kg potassium permanganate KMnO 4 , 18kg potassium chlorate KClO 3 , 30kg active attapulgite clay, 7kg chromium trioxide Gr 2 o 3 , 4kg manganese oxide MnO 2 , 6kg zinc oxide ZnO, 6kg copper chloride CuCl 2 , 4kg copper oxide CuO, 4kg copper carbonate CuCO 3 ·5H 2 O, 4kg zinc sulfate ZnSO 4 ·7H 2 O, 3kg zinc nitrate Zn(NO 3 ) 2 , 0.8kg barium molybdate BaMoO 4 , 1kg titanium oxide TiO 2 , 0.8kg vanadium pentoxide V 2 o 5 , 0.3kg copper sulfate CuSO 4 , 0.3kg cerium oxide CeO 2 , 2kg penetrant JFC and 0.2kg lignosulfonate;

[0038] Then, the above-mentioned raw materials are prepared into boiler coal-fired combustion-supporting desulfurizer compositi...

Embodiment 2

[0045] Example 2 First, the raw materials were weighed according to the following components and weights: 8kg sodium carbonate, 3kg aluminum hydroxide, 5kg ferric chloride, 6kg urea, 10kg ammonium carbonate, 4kg ammonium chloride NH 4 Cl, 8kg ferric oxide, 7kg potassium permanganate, 22kg potassium chlorate, 25kg active attapulgite clay, 4kg chromium oxide, 6kg manganese oxide, 4kg zinc oxide, 8kg copper chloride, 2kg copper oxide, 6kg copper carbonate, 3kg zinc sulfate, 5kg zinc nitrate, 1.5kg barium molybdate, 1.5kg titanium oxide, 0.5kg vanadium pentoxide, 0.5kg copper sulfate, 0.2kg cerium oxide, 1kg penetrant JFC and 0.15kg lignosulfonate;

[0046] Then, the above-mentioned raw materials are prepared into boiler coal-fired combustion-supporting desulfurizer compositions according to the following steps:

[0047] 1. Mix sodium carbonate, aluminum hydroxide, and ferric chloride evenly; then use a grinder to crush, sieve and classify; among them, 100 mesh fineness accoun...

Embodiment 3

[0053] Embodiment 3 Weigh raw materials according to the following components and weight: 2kg sodium carbonate, 7kg aluminum hydroxide, 2kg ferric chloride, 15kg urea, 4kg ammonium carbonate, 10kg ammonium chloride NH 4 Cl, 9kg ferric oxide, 22kg potassium permanganate, 7kg potassium chlorate, 40kg active attapulgite clay, 8kg chromium oxide, 2kg manganese oxide, 8kg zinc oxide, 4kg copper chloride, 6kg copper oxide, 2kg copper carbonate, 7kg zinc sulfate, 4kg zinc nitrate, 0.5kg barium molybdate, 2kg titanium oxide, 1.5kg vanadium pentoxide, 0.2kg copper sulfate, 0.5kg cerium oxide, 3kg penetrant JFC and 0.1kg lignosulfonate;

[0054] Then, the above-mentioned raw materials are prepared into boiler coal-fired combustion-supporting desulfurizer composition according to the following steps:

[0055] 1. Mix sodium carbonate, aluminum hydroxide, and ferric chloride evenly; then use a grinder to crush, sieve and classify; among them, 100-mesh fineness accounts for 55%, 80-mesh...

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Abstract

The invention relates to an additive product suitable for coal-fired boilers in the petroleum, chemical and power industries and provides a boiler coal combustion-improving denitrifying agent composition. The composition comprises the following raw materials in parts by weight: 2-8 parts of sodium carbonate, 3-7 parts of aluminium hydroxide, 2-5 parts of ferric trichloride, 6-15 parts of urea, 4-10 parts of ammonium carbonate, 4-10 parts of ammonium chloride, 3-9 parts of ferric oxide, 7-22 parts of potassium permanganate, 7-22 parts of potassium chlorate, 15-40 parts of activated attapulgite clay, 4-8 parts of chromium sesquioxide, 2-6 parts of manganese oxide, 4-8 parts of zinc oxide, 4-8 parts of copper chloride, 2-6 parts of copper oxide, 2-6 parts of copper carbonate, 3-7 parts of zinc sulfate, 2-5 parts of zinc nitrate, 0.5-1.5 parts of barium molybdate, 1-2 parts of titanium oxide, 0.5-1.5 parts of vanadium pentoxide, 0.2-0.5 part of copper sulfate, 0.2-0.5 part of cerium oxide, 1-3 parts of penetrating agent JFC and 0.1-0.2 part of lignosulphonate. The composition is efficient in combustion improving, has high coal saving rate and prolongs the service lives of the boilers.

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 denitrification agent composition, and the invention also relates to boiler coal-fired combustion-supporting denitrification A method for the preparation of the composition. Background technique [0002] With the rapid development of the economy, the sulfur dioxide (SO2) emitted by coal burning in my country 2 ) and nitrogen oxides (NOx) increased sharply. Sulfur dioxide and nitrogen oxides are the main substances of air pollution. According to statistics, my country's annual NOx, SO 2 The emissions are about 7.7 million tons and 24 million tons respectively, while NOx, SO 2 It is one of the main reasons for the formation of "acid rain" and "acid fog". Nitrogen oxides combine with hydrocarbons to form photoch...

Claims

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Application Information

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IPC IPC(8): C10L9/12C10L10/00
Inventor 刘志新
Owner GANSU HEIMA PETROCHEM ENG
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