CN104293410B - Desulfurization, dust removal and coal combustion accelerant - Google Patents
Desulfurization, dust removal and coal combustion accelerant Download PDFInfo
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- CN104293410B CN104293410B CN201410456614.0A CN201410456614A CN104293410B CN 104293410 B CN104293410 B CN 104293410B CN 201410456614 A CN201410456614 A CN 201410456614A CN 104293410 B CN104293410 B CN 104293410B
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- dedusting
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Abstract
The invention discloses a preparation method of a desulfurization, dedusting and coal combustion accelerant, which is characterized by comprising the following process steps: adding potassium nitrate into a reactor according to mass percentage: 20 to 30 percent; aluminum nitrate: 10 to 16 percent; calcium carbonate: 12 to 20 percent; potassium permanganate: 5 to 10 percent; soluble starch: 15 to 25 percent; iron chloride: 4 to 10 percent; 8-18% of betaine; the components are completely mixed and evenly mixed to obtain the coal desulfurization, dust removal and coal combustion accelerant. The preparation process is simple, the production cost is low, the industrial production is easy, the boiler is not corroded after long-term use, the scaling of calcium sulfate in the boiler can be reduced, the service life of the boiler is prolonged, and the combustion efficiency of coal is improved.
Description
Technical field
The present invention relates to a kind of for coal burning technical field, particularly to a kind of desulfurization, dedusting, coal burning
Accelerator.
Background technology
China is consumption of coal big country, and coal accounts for about the 70% of primary energy consumption.Within 2013, producing coal total amount reaches 3,700,000,000
Ton, wherein about 2,600,000,000 tons for directly burning or generate electricity.Owing to combustion technology falls behind, incomplete combustion, efficiency of combustion is low
Reason, the colm that energy level is the highest is not utilized or utilizes little and is wasted, and energy waste problem ratio is more serious.Coal is in combustion
The major pollutants produced during burning have: carbon dioxide, carbon monoxide, sulfur dioxide (can produce three oxidations with air contact
Sulfur), nitrogen dioxide (dinitrogen tetroxide can be formed under certain condition), nitric oxide, dust etc..Cause air pollution, be also
Form the principal element of haze.Therefore, improve the efficiency of combustion of coal, reduce the discharge of pollutant, it is achieved the clean efficiently combustion of coal
Burn, not only there is higher economic benefit, also there is great social meaning simultaneously.In order to realize this target, use fire coal
Accelerator (hereinafter referred to as accelerator) is more one of effective measures.In coal, add combustion improver, can significantly improve
Burning of coal feature, i.e. can improve the precipitation rate of the fugitive constituent of coal, reduces the ignition point of coal, accelerates the burning speed of coke
Degree, shortens burning time, thus improves burning of coal efficiency.By adding a small amount of accelerator in coal, coal can promoted
Completely while burning, reduce dust and the discharge of pollutant.
Coal burning is a complicated oxidizing process, can be generally divided into volatilization effusion, burning (homogeneous combustion) and charcoal
The ignition (heterogeneous combustion) of grain.Combustion improver can reduce the apparent activation energy of coal burning, reduces catching fire of coal
Point and quickening coal burning speed；The fracture that during accelerating coal pyrolysis, various combinations are strong, improves the analysis of coal volatile matter
Go out speed.Adding desulfurizing agent in Coal combustion improver can make coal reduce the discharge of sulfur dioxide in combustion；
Adding dustfall agent in Coal combustion improver can make coal reduce the discharge of dust in combustion, thus at coal
Combustion process is added combustion improver and can not only improve the efficiency of combustion of coal, the most also reduce coal burning process contaminant
Discharge.In recent years, the research to Coal combustion improver and combustion adjuvant has been reported.In Chinese patent CN 102816625 A
Disclosing the Coal combustion improver that a kind of desulfurized effect is good, including accelerator and desulfurizing agent, described desulfurizing agent is: acetylenecarboxylic acid first
Ester, Methyl propiolate accounts for the 1-2% of gross weight.Coal burning saving rate of the present invention is obvious, between 5-25%, especially to low grade fever
Value, low-volatile coal burning facilitation effect obvious.Sulfureous in flue gas content can be greatly reduced, and the amplitude that reduces is at 35-65%
Between.Chinese patent CN 102816624 A discloses a kind of Coal combustion improver, including accelerator and desulfurizing agent, described
Desulfurizing agent is: Methyl propiolate, ethyl propiolate.Coal burning saving rate of the present invention is obvious, between 5-25%, especially to low
Calorific value, low-volatile coal burning facilitation effect obvious.Sulfureous in flue gas content can be greatly reduced, and the amplitude that reduces is at 40-
Between 70%.Chinese patent CN 101775323 A discloses the preparation method of a kind of combustion-supporting agent for fuel coal, present invention employs
1. with sodium chlorate and the potassium chloride of good stability, during being dissolved in water, reaction generates the principle of potassium chlorate.2. bulking agent
The introducing of sodium acetate is to carry out alkali exchange with the humate in coal, and generates the humate that ignition point is relatively low, reduces
The flammability of coal.3. required in formula ferrum oxide is insoluble in the compound of water.Therefore present invention iron chloride and
Calcium oxide, during being dissolved in water, reaction generates ferrum oxide.Chinese patent CN 102191110 A disclose a kind of coal-fired
Combustion adjuvant, it is characterised in that consist of dolomite dust 20-30%；Dicyclopentadieny iron 5-15%；Chromic acid 3-
10% ；Manganese dioxide 3-10%；Magnesium nitrate 3-15%；Sodium dichromate and/or potassium dichromate 3-15%；Zinc oxide 3-18%；
Active hargil 15-30wt% compounding mixing composition.There is the several functions such as sulfur, smoke elimination combustion-supporting, solid, boiler thermal effect can be improved
Rate 3-8%, coal saving rate reaches 5-15%, and discharge fume the total removal rate 25-60% such as lingemann blackness ＜ 1, SO2, NOx, has notable joint
Coal, environment protecting.Chinese patent CN1109096 combustion-supporting agent for fuel coal, by magnesium chloride 20-25 part, potassium nitrate 25-35 part, nitric acid
Sodium 25-35 part, potassium chlorate 8-12 part and sodium chlorate 10-15 part composition.Chinese patent CN1724621 additive for fire coal, by
Sal combustion adjuvant and quick lime absorbent press 4-10%: 96-90% weight proportion mixing.Chinese patent CN1597884 is efficient
Combustion-supporting green coal-saving agent.By 5-12% magnesium chloride, 6-15% sodium phosphate, 0.8-1.2% potassium permanganate, 0.1-0.3% hydroxide
Ferrum, 0.1% magnesium hydroxide.
Above-mentioned prior art, mostly uses and helps the oxygen theory of combustion, generally use sodium chloride, potassium permanganate, sodium nitrate, chlorination
Magnesium, potassium nitrate, potassium chlorate etc., as coal combustion adjuvant raw material, have certain corrosivity to boiler heating surface, can reduce boiler and use
Life-span.Secondly, function singleness, lack dust elimination, anti-coking, catalyst.Sulphur-fixing agent uses Organic substance mostly, so makes its price very
Height, affects the use of manufacturing enterprise.
Summary of the invention
It is an object of the invention to overcome the deficiency of above-mentioned prior art, it is provided that a kind of easy to use, effective, price is just
Preferably, integrate solid sulfur, Coal combustion improver that dust elimination, promotion are burnt.
The purpose of the present invention is achieved through the following technical solutions.
A kind of desulfurization, dedusting, the preparation method of Coal combustion improver, be characterised by consisting of mass percent as follows:
Potassium nitrate: 20-30%；Aluminum nitrate: 10-16%；Calcium carbonate: 12-20%；Potassium permanganate: 5-10%；Solubility is formed sediment
Powder: 15-25%；Iron chloride: 4-10%；Glycine betaine 8-18%；Each component sum is absolutely, mix homogeneously, obtains coal and takes off
Sulfur, dedusting, Coal combustion improver.
The using method of a kind of coal accelerator of the present invention is as follows:
Being sprayed at soluble in water for described Coal combustion improver on fire coal, the amount adding Coal combustion improver is coal
In the range of the 0.1 ~ 0.5% of quality.
Described Coal combustion improver prepares at rear packing and storing cool place, keeps fire away.
Described Coal combustion improver uses multiple oxidant such as potassium nitrate, aluminum nitrate, potassium permanganate, the work of oxidant
With being the oxygen providing abundance in combustion process, making the clean-burning essential condition of coal, using multiple oxidant advantage is oxidation
Decomposition temperature different can provide oxygen, multiple oxidant potassium nitrate: aluminum nitrate: potassium permanganate in the different phase of burning
Quality be 2:1:0.5 be optimum.Selection nitrate as another effect of oxidation is, owing to there being N in combustion2Product
Raw, make the more bulk oxygen of fuel be easier to enter, burning is more abundant, plays the effect of bulking agent
In described Coal combustion improver, aluminum nitrate and potassium permanganate are in combustion, are also to be while oxidant
The catalyst of coal burning, owing to after burning, potassium permanganate and carbon reaction produce manganese metal, aluminum nitrate produces aluminum, these metals
There is the lattice of carbon to be distorted change, the activity of carbon just improves, and produced heat just improves.
In described Coal combustion improver, calcium carbonate is sulphur-fixing agent, in combustion SO2With CaO and O2Reaction generates
CaSO4, the calcium sulfur ratio in coal is the highest, SO2Discharge the least.
In described Coal combustion improver, the effect of soluble starch is bulking agent and binding agent, also combines with iron chloride
To depositing dust effect.
Glycine betaine in described Coal combustion improver act as dispersant and penetrating agent, the existence of glycine betaine makes coal
Combustion improver can disperse the surface of coal very well and fully penetrate into the inside of coal, make the effect of Coal combustion improver with
Fully；Another effect of glycine betaine is moistureproof, anti-caking during the storage of Coal combustion improver.
The present invention compared with the prior art, has the advantage that and beneficial effect:
(1) a kind of desulfurization of the present invention, dedusting, Coal combustion improver are solid, it is easy to store, transport, simple to operate,
Safety, addition are few.
(2) a kind of desulfurization of the present invention, dedusting, Coal combustion improver, saves coal obvious after interpolation, heat can increase
10 ~ 30%, especially low-calorie coal burning facilitation effect is become apparent from.
(3) a kind of desulfurization of the present invention, dedusting, Coal combustion improver, it is possible to the sulfur content being greatly reduced in flue gas and
The content of dust, sulfur content can reduce by 45 ~ 75%, and dust content can reduce between 50 ~ 80%.
(4) a kind of desulfurization of the present invention, dedusting, Coal combustion improver, preparation technology is simple, and production cost is low, it is easy to
Industrialized production.
Detailed description of the invention
Embodiment 1
A kind of desulfurization, dedusting, the preparation method of Coal combustion improver, in a reservoir, add potassium nitrate 24g, aluminum nitrate
12g, calcium carbonate 16g, potassium permanganate 6g, soluble starch 20g, iron chloride 5g, glycine betaine 17g, be stirred at room temperature uniformly, i.e.
Obtain desulfurization, dedusting, Coal combustion improver.
Embodiment 2
A kind of desulfurization, dedusting, the preparation method of Coal combustion improver, in a reservoir, add potassium nitrate 30g, aluminum nitrate
15g, calcium carbonate 12g, potassium permanganate 7g, soluble starch 18g, iron chloride 10g, glycine betaine 8g, be stirred at room temperature uniformly, i.e.
Obtain desulfurization, dedusting, Coal combustion improver.
Embodiment 3
A kind of desulfurization, dedusting, the preparation method of Coal combustion improver, in a reservoir, add potassium nitrate 20g, aluminum nitrate
10g, calcium carbonate 20g, potassium permanganate 5g, soluble starch 25g, iron chloride 8g, glycine betaine 12g, be stirred at room temperature uniformly, i.e.
Obtain desulfurization, dedusting, Coal combustion improver.
Embodiment 4
A kind of desulfurization, dedusting, the preparation method of Coal combustion improver, in a reservoir, add potassium nitrate 26g, aluminum nitrate
13g, calcium carbonate 18g, potassium permanganate 8g, soluble starch 22g, iron chloride 4g, glycine betaine 9g, be stirred at room temperature uniformly, i.e.
Obtain desulfurization, dedusting, Coal combustion improver.
Embodiment 5
A kind of desulfurization, dedusting, the preparation method of Coal combustion improver, in a reservoir, add potassium nitrate 24kg, aluminum nitrate
12kg, calcium carbonate 16kg, potassium permanganate 6kg, soluble starch 20kg, iron chloride 5kg, glycine betaine 17kg, be stirred at room temperature
Uniformly, desulfurization, dedusting, Coal combustion improver are obtained.
Embodiment 6
A kind of desulfurization, dedusting, the preparation method of Coal combustion improver, in a reservoir, add potassium nitrate 28kg, aluminum nitrate
14kg, calcium carbonate 15kg, potassium permanganate 7kg, soluble starch 15kg, iron chloride 7kg, glycine betaine 14kg, be stirred at room temperature
Uniformly, desulfurization, dedusting, Coal combustion improver are obtained.
Using method: desulfurization, dedusting, Coal combustion improver are dissolved in water, mass concentration is between 10 ~ 20%, and stirring is all
Even, uniformly it is sprayed on coal.
The present invention obtains desulfurization, dedusting, Coal combustion improver, has sulfur, dust-laying effect the most admittedly, is significantly improved
The efficiency of combustion of coal.
Claims (2)
1. a desulfurization, dedusting, the preparation method of Coal combustion improver, it is characterised in that the method has following technique step
Rapid: in the reactor, add potassium nitrate: 20-30% by mass percentage concentration；Aluminum nitrate: 10-16%；Calcium carbonate: 12-20%；
Potassium permanganate: 5-10%；Soluble starch: 15-25%；Iron chloride: 4-10%；Glycine betaine 8-18%；Each component sum is hundred
/ hundred, mix homogeneously, obtain coal desulfurization, dedusting, Coal combustion improver.
2. according to a kind of desulfurization described in claim 1, dedusting, Coal combustion improver preparation method prepared by de-
Sulfur, dedusting, Coal combustion improver, is characterized in that: described desulfurization, dedusting, the consumption of Coal combustion improver are coal matter
In the range of the 0.1～0.5% of amount.
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| CN201410456614.0A CN104293410B (en) | 2014-09-10 | 2014-09-10 | Desulfurization, dust removal and coal combustion accelerant |
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| CN201410456614.0A CN104293410B (en) | 2014-09-10 | 2014-09-10 | Desulfurization, dust removal and coal combustion accelerant |
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| CN104293410A CN104293410A (en) | 2015-01-21 |
| CN104293410B true CN104293410B (en) | 2016-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106190427B (en) * | 2016-08-17 | 2019-04-19 | 宫小奕 | A kind of boiler fired coal additive and preparation method thereof and application method |
| CN109913269A (en) * | 2018-12-14 | 2019-06-21 | 西安交通大学 | A kind of ash-cleaning and coke-removing agent and preparation method thereof for melting furnace |
| CN112779070A (en) * | 2020-12-07 | 2021-05-11 | 无锡华光电力工程有限公司 | Low-calorific-value coal synergistic method |
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| CN101899352A (en) * | 2010-08-02 | 2010-12-01 | 中国地质大学（武汉） | Additive for low-volatile coal and preparation method thereof |
| CN103060052A (en) * | 2011-10-21 | 2013-04-24 | 湖南晟通科技集团有限公司 | Liquid combustion-supporting sulfur-fixing coal additive and using method thereof |
| WO2013103234A1 (en) * | 2012-01-03 | 2013-07-11 | Oh Mi Hye | Fuel additive composition containing liquid crystal state of borate ions, and preparation method thereof |
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| CN1106059A (en) * | 1994-08-19 | 1995-08-02 | 沈长江 | Briquette synergist and briquette contained synergist and its manufacturing method |
| CN101041788A (en) * | 2006-03-24 | 2007-09-26 | 新疆天融环保科技开发有限公司 | Energy-saving sulfur-reducing dust removal concentration liquid |
| CN101544924A (en) * | 2009-04-16 | 2009-09-30 | 肖明学 | Energetic synergistic coal-saving agent |
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Effective date of registration: 20210514 Address after: 518116 1707, building 4, phase II, Tian'an cloud Valley Industrial Park, Gangtou community, Bantian street, Longgang District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN QUANYI CONSTRUCTION ENGINEERING Co.,Ltd. Address before: 518052 201, block a, huayuancheng digital building, 1079 Nanhai Avenue, Yanshan community, zhaoshang street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Guozhuan Intellectual Property Service Center Co.,Ltd. Effective date of registration: 20210514 Address after: 518052 201, block a, huayuancheng digital building, 1079 Nanhai Avenue, Yanshan community, zhaoshang street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Guozhuan Intellectual Property Service Center Co.,Ltd. Address before: No. 336, nanxinzhuang West Road, Jinan City, Shandong Province, 250022 Patentee before: University of Jinan |
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