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Efficient coal combustion energy-saving combustion adjuvant and preparation thereof

A combustion-supporting agent and coal-burning technology, used in fuels, solid fuels, petroleum industries, etc., can solve the problems of difficult coal clean combustion, reduced boiler service life, high cost, improved combustion activity and ignition performance, improved ignition speed and The effect of burning speed, significant economical effect

Inactive Publication Date: 2012-07-04
陈士进
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these raw materials, although sodium chloride is neutral, there are many sodium ions and chloride ions in it. Long-term use will corrode metals and reduce the service life of boilers; nitrates are dangerous chemicals that are easily It is flammable and explosive, and when nitrate is used as a combustion aid for coal, it is easy to produce toxic nitrogen oxides and pollute the air
In addition, these coal-use combustion aids are not only added in a large amount (addition ratio of 2-3%), but also cost high, and are only suitable for small boilers (such as ordinary boilers below 35 tons), and have no obvious energy saving for large and medium-sized industrial boilers Effect
The existing coal combustion enhancers are difficult to achieve clean combustion of coal, fail to achieve good results in energy saving and environmental protection, and cannot meet the current national clean coal technology requirements

Method used

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  • Efficient coal combustion energy-saving combustion adjuvant and preparation thereof
  • Efficient coal combustion energy-saving combustion adjuvant and preparation thereof
  • Efficient coal combustion energy-saving combustion adjuvant and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 is similar to the preparation of perovskite type composite oxide

[0029] The preparation steps are as follows:

[0030] 1. Weigh 50 kg of zinc oxide and place it in a container for standby;

[0031] 2. Synthesize manganese dioxide by solid phase reaction method: weigh 25 kilograms of KMnO respectively 4 and MnCl 2 4H 2 0, be placed in container and fully grind 30 minutes, obtain 50 kilograms of metal oxide manganese dioxide;

[0032] 3. Mix 50 kg of zinc oxide and 50 kg of manganese dioxide in a container, and continue grinding for 2 hours; then place the ground mixture in a constant temperature water bath at 70 degrees for 25 hours, and evaporate to dryness;

[0033]4. Roasting the evaporated mixture at a temperature of 600-800° C. for 3 hours, and cooling to obtain 100 kg of similar perovskite-type composite oxides for preparing high-efficiency coal-burning, energy-saving and combustion-supporting agents.

Embodiment 2

[0034] Example 2 Preparation of high-efficiency coal-fired energy-saving combustion accelerant

[0035] The preparation steps are as follows:

[0036] 1. Weigh 50 kg of similar perovskite-type composite oxides, 20 kg of dolomite powder, 3 kg of ferrocene, 20 kg of activated clay and 7 kg of sodium dichromate;

[0037] 2. Mix the weighed similar perovskite-type composite oxide, dolomite powder and ferrocene, and stir for 40 minutes;

[0038] 3. After mixing and stirring the weighed active clay and sodium dichromate for 20 minutes, add the stirred mixture of similar perovskite-type composite oxides, dolomite powder and ferrocene, and stir for another 50 minutes to obtain 100 kg High-efficiency coal-burning energy-saving combustion accelerant 1.

Embodiment 3

[0039] Example 3 Preparation of high-efficiency coal-fired energy-saving combustion accelerant

[0040] Weigh 45 kilograms of similar perovskite type composite oxides, 25 kilograms of dolomite powder, 4 kilograms of ferrocene, 20 kilograms of activated clay and 6 kilograms of sodium dichromate, and repeat the preparation steps of Example 2 to obtain 100 kilograms of high-efficiency Coal-fired energy-saving combustion accelerant 2.

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Abstract

The invention relates to a perovskite resembling composite oxide and a high-efficient energy-saving coal combustion improver which is made by taking the perovskite resembling composite oxide as raw material. The high-efficient energy-saving coal combustion improver takes perovskite resembling composite oxide, dicyclopentadienyl iron, dolomite dust, sodium acid chromate and floridin as raw materials and is prepared by the following steps: 40-50% of perovskite resembling composite oxide, 3-6% of dicyclopentadienyl iron and 20-30% of dolomite dust are firstly blended in proportion and stirred for 30-50 minutes under normal temperature; 3-7% of sodium acid chromate and 20-25% of aluminate compound floridin are additionally weighed and stirred for 15-20 minutes under normal temperature, then the well stirred mixture of perovskite resembling composite oxide, dicyclopentadienyl iron and dolomite dust is added and stirred for 30-60 minutes under normal temperature, and quantity measurement and packaging are carried out to produce the finished products. The high-efficient energy-saving coal combustion improver has significant coal-saving and environmental protection effects, not only is suitable for various industrial boilers and coal blending, but also can achieve significant energy-saving effect for the thermoelectricity boilers in various large or medium electric power plants.

Description

technical field [0001] The invention relates to a high-efficiency coal-burning, energy-saving and combustion-supporting agent, in particular to a high-efficiency coal-burning, energy-saving and combustion-supporting agent containing similar perovskite-type composite oxides. Background technique [0002] Most domestic coal-fired combustion aid products adopt the technical principle of oxygen-assisted combustion, and sodium chloride, potassium permanganate, sodium nitrate, barium nitrate, calcium oxide, etc. are usually used as coal combustion aid raw materials. For example, the patent document whose application number is 93109398.8 discloses a high-efficiency smoke-removing coal-saving combustion-supporting agent, with 1-96% sodium chloride, 1-96% urea, 1-96% potassium permanganate, 1-96% % of potassium carbonate and 1-96% of sodium carbonate; the application number is 97105154.2 patent literature discloses a coal combustion aid, with boron mud, limestone, bauxite, sodium car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10
Inventor 陈士进
Owner 陈士进