CN1093740A - Combustion-supporting agent for coal - Google Patents
Combustion-supporting agent for coal Download PDFInfo
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- CN1093740A CN1093740A CN 93103862 CN93103862A CN1093740A CN 1093740 A CN1093740 A CN 1093740A CN 93103862 CN93103862 CN 93103862 CN 93103862 A CN93103862 A CN 93103862A CN 1093740 A CN1093740 A CN 1093740A
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Abstract
A kind of combustion-supporting agent for coal, mainly be made up of catalyzer, ignition dope, oxygenant and dust-cleaning agent, the weight percent of each component is a catalyzer 4-10%; Ignition dope 60-80%; Oxygenant 2.5-10%; Dust-cleaning agent 3.5-7% can also add dispersion agent or aldrin on the basis of the above, and the present invention has the raising boiler thermal output, prolongs the burning of coal time, saves coal, reduces the advantage of slag, reduction boiler exhaust gas blackness.
Description
The present invention relates to a kind of combustion-supporting agent for coal, this burning agent mixes with coal can improve Industrial Boiler thermo-efficiency, reduces slag, reduces the boiler exhaust gas blackness.
The equipment of the present coal burning of the most of enterprises of China is outmoded, and thermo-efficiency is low, and energy consumption is huge, therefore has the people to attempt to utilize some additives to improve the burning of coal situation from the combustion processes of chemical aspect research coal.Chinese patent CN1041609 discloses a kind of coal combustion-promoting agents, this ignition dope mainly by potassium permanganate, to sell sour sodium, sodium-chlor, ferric oxide and calcium lime powder formulated, this ignition dope has certain combustion-supporting effect.But the thermo-efficiency for Industrial Boiler improves, and reduces the boiler noxious gas emission, reduces the aspects such as generation of slag, and effect is little.
The objective of the invention is to propose a kind of combustion-supporting agent for coal, this burning agent can improve the thermo-efficiency of Industrial Boiler, saves coal, reduces the quantity discharged of dust and industrial harmful gas.
Combustion-supporting agent for coal of the present invention mainly is made up of catalyzer, ignition dope, oxygenant and dust-cleaning agent, and the weight percent of its each component is catalyzer 4-10%; Ignition dope 60-80%; Oxygenant 2-8%; Dust-cleaning agent 3.5-7%.Wherein catalyzer is a Potcrate, and ignition dope is an industrial salt, and oxygenant is saltpetre and potassium bichromate, and the weight percent of its component is 2-7.8% and 0.5-2 ‰; Dust-cleaning agent can be potassium permanganate and caustic soda, and the weight percent of its component is 3-6% and 0.5-1%.On the basis of above-mentioned prescription, dispersion agent can also be added, or aldrin,, and the composition of obnoxious flavour in the boiler flue gas can be reduced in order to coal burning.
Industrial coal has the crystallization of the carbon of arranging according to certain rules, and some compounds and many trace elements are also arranged, but the main component of coal is that macromolecular chemistry is formed structure.The carbonatoms of macromolecular chain is about 12-50.The pyrolysis of coal has different content: CH
4(methane), C
2H
6(ethane), C
2H
4(ethene), C
3H
8(propylene), H
2(hydrogen), H
2O(water), N
2(nitrogen) etc.Add after the burning agent, quicken the fracture of the macromolecular chain charcoal of coal.Quicken the vaporization rate of coal, can improve coal gasification rate 20-30%, increase coal gasification speed simultaneously at burner hearth.
The general industry steam coal adds about 10% water before use, and these water enter burner hearth and are evaporated to water vapor later on, and some resolves into hydrogen and oxygen, and reignition is emitted a large amount of heat, and most of water vapor is undecomposed, goes out with flue gas emissions.Add after the burning agent, make coal and water vapor accelerated reaction, releasing hydrogen gas.Burning agent plays the effect of catalyzer, and its reaction formula is:
Mixing of burning agent makes to add in the coal about 10% water, and be most of or all become fuel combustion.
Burning agent has the effect that prolongs the burning of coal time, makes the more complete of coal combustion oxidation, and the slag carbon content reduces, and slag amount reduces.
Some components of burning agent, for example aldrin make non-metallic elements such as sulphur in the coal, phosphorus change the awkward compound that decomposes, and sink in the slag.Inhibition NO is arranged
xAnd SO
xThe formation effect, reduce in the boiler flue NO so have
xAnd SO
xEffect Deng obnoxious flavour.
Burning agent has the effect of tangible removing boiler outside surface black dirt.The boiler black dirt is the burnt pledge by charcoal, and compounds such as burnt sulphur are formed, and are difficult to oxidizing fire.The black dirt thermal conductivity is very low, and the thermal resistance ratio of steel plate, incrustation scale, crock is: 1: 25: 500.The thermal conductivity of 1 millimeter crock is equivalent to the thermal conductivity of 100 millimeters steel plates.The adding of burning agent improves 100-300 ℃ of boiler flame temperature, increases the oxidizing fire of firing-difficult matter matter, removes the burnt pledge of the carbon of black dirt.The removing of black dirt can improve thermo-efficiency more than 3%.
Dispersion agent in the burning agent, make coal enter burner hearth after, be easy to disperse and come, or make buckwheat coal become loose, surfactivity strengthens, and increases with the contact area of oxygen, is easy to burning.And the reaction of the oxidizing fire of coal is easy to fully.
The adding of burning agent, the ignition temperature of reduction coal, the ignition temperature of general coal is at 350-450 ℃, and the ignition temperature of no coal is at 450 ℃.Solid state reaction just takes place at 200-300 ℃ in some components of burning agent and coal, the pre-ignition of coal reaction just.Burning agent makes coal reduce ignition temperature in the boiler stove, and the coal powder just was fully burned before not being drawn into flue.
These chemical physical actions of burning agent, boiler combustion speed is accelerated, radiation and convective heat transfer increase, improved the energy density of unit volume fuel, thereby the discharging of difficult coal-fired grain has been exerted oneself, reduced to the thermo-efficiency, the heat that have improved burning boiler, reduce boiler heat loss, reduced the quantity discharged of dust and industrial harmful gas.Mensuration according to american energy systematic study center shows, to contain the oxygen-rich air of oxygen 45%, when flue-gas temperature is 1200 ℃, can save coal-fired 33.5%.The chemical physical action of burning agent and the raising of performance can reach this coal conservation.
The invention will be further described below in conjunction with embodiment
Embodiment 1 is the current version combustion-supporting agent for coal, and the described dispersion agent of this burning agent is that calcium oxide, catalyzer are Potcrate, and ignition dope is soda ash and salt, and oxygenant is a potassium bichromate, and dust-cleaning agent is a potassium permanganate, and the weight percent of each component is calcium oxide 30-50%; Potcrate 8-10%; Soda ash 10-20%; Salt 30-50%; Potassium bichromate 0.5-1 ‰; Potassium permanganate 3-5%.Above-mentioned raw materials is mixed, and powder size is the 40-60 order, and its water content should be less than 10%, and the incorporation in coal is 1%, both can also can dry powder blend go in the coal to use with being sprayed at after 1: 10 water-solubleization in the coal.This burning agent is tried out at the horizontal fast-assembly link chain boiler of Beijing meat processing combine, and engagement Beijing electronic product standard quality inspection center, the thermal equilibrium test cabinet is measured thermal parameter in the boiler operatiopn and flue dust, and flue dust monitoring report and thermal equilibrium measurement report are arranged.By measurement report, mix burning agent after, remarkable to improving the boiler operatiopn effect, smoke discharge amount is obviously reduced, reach the graceful blackness of Green below 0.5 grade.Positive balance thermo-efficiency is 73.3%, and counter-balance thermal efficiency is 77.09%, is 65% to have more significantly and improve than adding before the burning agent thermo-efficiency, and the slag carbon content drops to 12.58% by adding 22.35% before the burning agent, and coefficient of excess air descends.Coal conservation is 30-40%.
Embodiment 2 is the stronger combustion-supporting agent for coal of sulphur removal power, and the per-cent of this each composition weight of burning agent is salt of wormwood 20-30%, magnesium oxide 40-60%; SODIUMNITRATE 3-10%; Potcrate 2-4%; Potassium permanganate 2-4%, above-mentioned raw materials mix back mixing in the coal by 1.5% of coal and get final product.Beijing Lai Guangying Organic Chemical Plant, at 1 ton of bearing boiler some months on probation, estimation economizes on coal 25%, and boiler exhaust gas becomes faint yellow flue dust by black smoke dirt, and steam shop sulphur pungent taste obviously alleviates.
Embodiment 3 is newborn poroid combustion-supporting agent for coal, dispersion agent is a magnesium oxide in this burning agent, catalyzer is a potassium perchlorate, ignition dope is water glass and industrial salt, oxygenant be Potcrate,, potassium bichromate, SODIUMNITRATE and manganese oxide, dust-cleaning agent is caustic soda and potassium permanganate, and the weight percent of each component is; Magnesium oxide 20-40%; Potassium perchlorate 2-5%; Water glass 10-20%, industrial salt 30-60%; Potcrate 4-10%, potassium bichromate 0.2-1 ‰, SODIUMNITRATE 5-10% and manganese oxide 5-10%; Caustic soda 0.5-2%, potassium permanganate 3-6%.Above-mentioned raw materials is mixed, and incorporation is 2% in coal, and dry powder is sneaked in the coal.
The service condition in Da Yu chemical plant, Mentougou is that the boiler exhaust gas flue dust obviously reduces.Prosperous light gray or the white flue gas of emitting of former chimney, behind the adding burning agent, most experimental period is no flue dust burning, cannot see flue gas.The slag 4-5 car of former mornig shift, behind the adding burning agent, it is many that mornig shift goes out slag 1 car, and the coking situation obviously reduces in the burner hearth.Former mornig shift is with coal 17 cars, under kindred circumstances, mix burning agent after, only use 9-10 car coal, the 6-8 car of economizing on coal, 35-47% economizes on coal.
Claims (5)
1, a kind of combustion-supporting agent for coal is characterized in that mainly being made up of catalyzer, ignition dope, oxygenant and dust-cleaning agent, and the weight percent of its each component is catalyzer 4-10%; Ignition dope 60-80%; Oxygenant 2-8%; Dust-cleaning agent 3.5-7%.
2, combustion-supporting agent for coal according to claim 1 is characterized in that, described catalyzer is a Potcrate, and ignition dope is an industrial salt, and oxygenant is saltpetre and potassium bichromate, and the weight percent of its component is 2-7.8% and 0.5-2 ‰; Described dust-cleaning agent is potassium permanganate and caustic soda, and the weight percent of its component is 3-6% and 0.5-1%.
3, combustion-supporting agent for coal according to claim 1, it is characterized in that, add dispersion agent magnesium oxide, described catalyzer is a potassium perchlorate, ignition dope is water glass and industrial salt, oxygenant is Potcrate, potassium bichromate, SODIUMNITRATE and manganese oxide, and dust-cleaning agent is caustic soda and potassium permanganate, and the weight percent of each component is; Magnesium oxide 20-40%; Potassium perchlorate 2-5%; Water glass 10-20%, industrial salt 30-60%; Potcrate 4-10%, potassium bichromate 0.2-1 ‰, SODIUMNITRATE 5-10% and manganese oxide 5-10%; Caustic soda 0.5-2%, potassium permanganate 3-6%.
4, combustion-supporting agent for coal according to claim 3 is characterized in that, described dispersion agent is a calcium oxide, catalyzer is a Potcrate, and ignition dope is soda ash and salt, and oxygenant is a potassium bichromate, dust-cleaning agent is a potassium permanganate, and the weight percent of each component is calcium oxide 30-50%; Potcrate 8-10%; Soda ash 10-20%, salt 30-50%; Potassium bichromate 0.5-1 ‰; Potassium permanganate 3-5%.
5, combustion-supporting agent for coal according to claim 3, it is characterized in that, add salt of wormwood replace described potassium perchlorate and water glass, and form aldrin with magnesium oxide, described oxygenant is SODIUMNITRATE and Potcrate, described dust-cleaning agent is a potassium permanganate, and the weight percent of each component is salt of wormwood 20-30%, magnesium oxide 40-60%; SODIUMNITRATE 3-10%, Potcrate 2-4%; Potassium permanganate 2-4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93103862 CN1093740A (en) | 1993-04-13 | 1993-04-13 | Combustion-supporting agent for coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93103862 CN1093740A (en) | 1993-04-13 | 1993-04-13 | Combustion-supporting agent for coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1093740A true CN1093740A (en) | 1994-10-19 |
Family
ID=4984854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93103862 Pending CN1093740A (en) | 1993-04-13 | 1993-04-13 | Combustion-supporting agent for coal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070908C (en) * | 1996-06-26 | 2001-09-12 | 黄世瑜 | High-efficiency coal combustion-supporting agent |
| CN102643705A (en) * | 2012-05-14 | 2012-08-22 | 清远市卫尔信化工建材有限公司 | Coal combustion-supporting hydrogel as well as preparation method and application thereof |
| CN107356166A (en) * | 2017-08-24 | 2017-11-17 | 龚军 | A kind of blasting method for firing medium and medium being fired using this for restricted clearance explosion |
| CN113325033A (en) * | 2021-07-12 | 2021-08-31 | 北京矿冶研究总院 | Method for measuring combustion heat value of amorphous boron powder |
-
1993
- 1993-04-13 CN CN 93103862 patent/CN1093740A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1070908C (en) * | 1996-06-26 | 2001-09-12 | 黄世瑜 | High-efficiency coal combustion-supporting agent |
| CN102643705A (en) * | 2012-05-14 | 2012-08-22 | 清远市卫尔信化工建材有限公司 | Coal combustion-supporting hydrogel as well as preparation method and application thereof |
| CN102643705B (en) * | 2012-05-14 | 2014-04-02 | 清远市卫尔信化工建材有限公司 | Coal combustion-supporting hydrogel as well as preparation method and application thereof |
| CN107356166A (en) * | 2017-08-24 | 2017-11-17 | 龚军 | A kind of blasting method for firing medium and medium being fired using this for restricted clearance explosion |
| CN107356166B (en) * | 2017-08-24 | 2019-02-26 | 龚军 | A kind of blasting method for firing medium and medium is fired using this for restricted clearance explosion |
| CN113325033A (en) * | 2021-07-12 | 2021-08-31 | 北京矿冶研究总院 | Method for measuring combustion heat value of amorphous boron powder |
| CN113325033B (en) * | 2021-07-12 | 2021-11-02 | 北京矿冶研究总院 | Method for measuring combustion heat value of amorphous boron powder |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
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