CN101230301A - Combustion-supporting, desulfurization and coal-saving additive used for boiler fire coal - Google Patents
Combustion-supporting, desulfurization and coal-saving additive used for boiler fire coal Download PDFInfo
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- CN101230301A CN101230301A CNA2008100001418A CN200810000141A CN101230301A CN 101230301 A CN101230301 A CN 101230301A CN A2008100001418 A CNA2008100001418 A CN A2008100001418A CN 200810000141 A CN200810000141 A CN 200810000141A CN 101230301 A CN101230301 A CN 101230301A
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Abstract
The invention provides a combustion-supporting desulfurating coal-saving additive which is used in the burning coal in boiler, the preparation of which is composed of 24-35 percent combustion improvers of methanol, aether, tween-80; 32-38 percent oxidants of potassium permanganate, potassium chlorate and potassium dichromate; 4-28 percent desulfurizer in which quicklime, potassium permanganate, potassium chlorate and potassium dichromate take part in; 18-22 percent anti-coking agent which contains potassium dichromate and quicklime; the rest is water, which complement the total volume of the additive to be 100 percent. The additive is prepared by adding water in the quicklime to produce lime cream; heating the water for acting as solution, after potassium permanganate, potassium chlorate and potassium dichromate are added into the solution and are stirred evenly; adding and mixing the methanol and tween-80 into the solution evenly, and then adding and mixing the lime cream into the solution evenly; finally adding and mixing the aether into the solution evenly; and preserving the heat for 1 hour. The invention can improve the desulfurization rate by 40 percent, improve the coal saving rate by 25 percent, and improve the thermal efficiency of the boiler by up to 5-10 percent; and can prevent the occurrence of boiler coking accident.
Description
Technical field
The invention belongs to and a kind ofly improve the material that burning is handled solid fuel, or the material that in fuel, adds, specifically a kind of combustion-supporting, desulfurization, coal-saving additive that is used for bunker coal.
Background technology:
In the present fuel technology, coal is a kind of important energy, widespread use on many Industrial Boilers and boiler of power plant.Existing boiler is with coal-fired heating flame the time, and coal does not generally all reach perfect combustion, and formation expends coal and existence is discharged a large amount of obnoxious flavoures, is one of main harm source of causing topsoil, and the carbon content of slag and flying dust is generally all about 15-30%.Therefore, reduce discharge of harmful gases, improve the efficiency of combustion of coal, be one key subjects of pendulum in face of the scientific worker,, improve coal burning efficient in order to reduce noxious gas emission, removing to improve combustion equipment widely is one of effective way, but its investment is huge, it seems with existing technical conditions, also can't all realize in a short time.In addition, adding auxiliary agent in coal also is a kind of good method of dealing with problems.Occurred a lot of coal additives in the last few years on the domestic market, it mainly acts on is desulfurization, dedusting and saving coal, but its effect is remarkable inadequately, and major part exists desulfurization, dedusting and the efficient of economizing on coal is lower, and slag carbon amount and dust concentration are bigger.It joins the auxiliary agent in the steam coal again, and because of containing a large amount of sodium salts, ferric oxide or Manganse Dioxide in the composition, these become branch that the fine coal fusion point of ash is reduced, and because fire box temperature raises, have increased the generation of boiler coke accident.
Summary of the invention
A kind of combustion-supporting, desulfurization, the coal-saving additive that is used for bunker coal that the object of the present invention is to provide that a kind of combustion-supporting property is strong, sweetening effectiveness good and can stop boiler coke.
The present invention also aims to adopt the best approach to solve the making of this additive.
Task of the present invention is finished like this, a kind of combustion-supporting, desulfating coal-saving additive that is used for bunker coal, participate in the system ingredients in the additive and be by weight percentage it, be by ignition dope 24～36%, oxygenant 32～38%, sweetening agent 4～28%, anti-coking agent 18～22% constitutes, employing adds hot water and makes lysate, supply with water its additive system ingredients material total amount be combined into 100%.Ignition dope in the system ingredients is made up of methyl alcohol 15～20%, ether 5～10% and 4～6% tween-80s; Oxygenant is made up of potassium permanganate 4～6%, Potcrate 14～16%, potassium bichromate 14～16%; Sweetening agent mainly is the participation effect of unslaked lime 4～6% and potassium permanganate, and has potassium bichromate in the oxygenant to play a part catalyzer to constitute; The anti-coking agent is mainly finished with potassium bichromate, unslaked lime 4～6%, makes lysate with adding hot water.The material system that preparation is adopted that participates in additive is joined, and heats water to 60 ℃～75 ℃ and makes as lysate; Participate in cooperating the material person in this system ingredients, is to get involved with himself independent characteristic to change.Above-mentioned selected industrial chemicals is commercially available technical grade industrial chemicals.
Above-mentioned ignition dope material is methyl alcohol, ether and tween-80.Methyl alcohol and ether are to be easy to incendiary, so, add after methyl alcohol and two kinds of materials of ether in the fire coal, can impel coal-fired catching fire in advance, prolong the burning of coal time relatively, impel fire coal to reach perfect combustion; And tween-80 can be penetrated into and goes in the fire coal, coal-firedly becomes bulk when the burning by making, and is difficult for forming bulk, causes coal-fired burning to become more abundant thus, so ignition dope reaches the purpose of the coal-fired perfect combustion of boiler.
The main material of above-mentioned oxygenant has: potassium permanganate, Potcrate and potassium bichromate.After potassium permanganate adds fire coal, its KMnO
4Begin to resolve into Manganse Dioxide (MnO at 240 ℃
2) and emit O
2Oxygen; And Potcrate is because be subjected to Manganse Dioxide (MnO
2) katalysis, when at 400 ℃, just progressively decompose and emit O
2Oxygen.Manganse Dioxide after potassium permanganate decomposes when being warmed up to 535 ℃, is decomposed into Mn once more
2O
3With O
2Oxygen.The potassium bichromate performance is more stable, and it begins to decompose at 610 ℃ emits O
2Oxygen.Many O of this oxygenant
2Oxygen lumps together and converges into a large amount of oxygen, just greatly improved the state of combustion of coal, after making coal enter boiler to add oxygenant, burnt from 240 ℃～800 ℃ situations that are in oxygen enrichment all the time, the intensity of a fire that makes sufficient combustion and become is strong suddenly, flame is high, thereby has improved boiler thermal output.Simultaneously, because combustion position improves, inflammable gas in the boiler smoke and suspension carbon granule also can obtain combustion fully to the greatest extent, thereby have reached concentration, the blackness grade that reduces flue dust, reach and save coal-fired purpose.
Above-mentioned sweetening agent mainly is a unslaked lime.Unslaked lime adds the calcium hydroxide that generates behind the water, can generate calcium sulfate CaSO with the sulfurous gas that fire coal is emitted
4, can not decompose during in furnace temperature less than 1450 ℃, can discharge with slag, have good sweetening effectiveness.
Potassium permanganate KMnO among the above-mentioned oxygenant
4, the Manganse Dioxide MnO that generates after the decomposes
2, its surface is porous state, and very strong adsorptive power is arranged, and becomes good sweetening agent, and then has improved the desulfuration efficiency of sweetening agent.
In addition, the potassium bichromate KCr among the above-mentioned oxygenant
2O
4, the chromium sesquioxide Cr that it generates behind pyrolytic decomposition
2O
3, can generate Cr with the sulphur in the fire coal
2FeS
4, further improved sweetening effectiveness, thereby made the fire coal can clean burning, reach the purpose of protection environment.
Above-mentioned anti-coking agent mainly is potassium bichromate, unslaked lime.Potassium bichromate generation fusing point after furnace high-temperature decomposes is 2435 ℃ Cr
2O
3, it in stove with fire coal in reaction of Salmon-Saxl after, just generate Cr with spinel structure body
2FeS
4This structure can impel the cinder structure of flyash formation, be changed into the coal-fired cinder structure of crystal type by vitreous texture, impel the coal-fired cinder of hard shape to be transformed into pore shape, brittle structure, thereby make flyash can not form hard cinder, and this structure can be good at improving cindery melting temperature, is to discharge with slag at last.In addition, the unslaked lime in the sweetening agent, fusing point are 2580 ℃, also can improve the melting temperature of cinder of burned coal.These two kinds of anti-coking agent unite use, the generation of fundamentally having stopped the boiler coke phenomenon.
A kind of combustion-supporting, desulfating coal-saving additive that is used for bunker coal made as follows
(1), it is stand-by the water of unslaked lime adding to be made milk of lime;
(2), another part water is heated to 60 ℃～75 ℃; Potassium permanganate, Potcrate, potassium bichromate pulverizing can be crossed 20～60 mesh sieve, add in the hot water, evenly stir through machine mixer and made the aqueous solution in 15 minutes;
(3), then with the aqueous solution of making, mix with methyl alcohol, tween-80, evenly stir with stirrer again and made mixed solution in 10～20 minutes;
(4), mixed solution is mixed with milk of lime, with the even stirring of stirrer 20～30 minutes, just one-tenth preparation liquid;
(5), in preparation liquid, add ether, again with the even stirring of stirrer 10～20 minutes;
(6), placed 30 ℃ of vessel reactor insulation reaction 1～2 hour;
(7), obtain liquid combustion-supporting, desulfurization, coal-saving additive, package spare respectively according to quantity.
Participating in the material coupling of system ingredients, is by weight percentage, is used in down
Methyl alcohol is 15～20% in the ignition dope, ether is 5～10%, tween-80 is 4～6%;
Be mainly for potassium permanganate in the oxygenant and be 4～6%, Potcrate is 14～16%, potassium bichromate is 14～16%;
Sweetening agent mainly is that the potassium permanganate and the potassium bichromate of unslaked lime and participation effect accounts for 4～28%.
The anti-coking agent mainly is a potassium bichromate, and unslaked lime is 4～6%.
All the other are water, nominally general water accounts for 28～32%.
(1), the selected participation material and the manufacture craft flow process of system ingredients of additive be:
(1), it is stand-by the water of 4～6% unslaked limes adding 1.6～2.4% to be made milk of lime;
(2), 26.6～29.4 water is heated to 60 ℃～75 ℃; Potassium permanganate 4～6%, Potcrate 14～16%, potassium bichromate 14～16% are pulverized and can be crossed 20～60 mesh sieve, add in the hot water, evenly stir through machine mixer and made the aqueous solution in 15 minutes;
(3), then with the aqueous solution of making, mix with methyl alcohol 15～20%, 4～6% tween-80s, evenly stir with stirrer again and made mixed solution in 10～20 minutes;
(4), mixed solution is mixed with milk of lime, with the even stirring of stirrer one-tenth preparation in 20～30 minutes liquid;
(5), in preparation liquid, add 5～10% ether, again with the even stirring of stirrer 10～20 minutes;
(6), placed 30 ℃ of vessel reactor insulation reaction 1～2 hour;
(7), obtain liquid combustion-supporting desulfurization coal-saving additive, package spare respectively according to quantity.
Also have in addition:
(2), the selected participation material of system ingredients is:
Methyl alcohol 15% potassium permanganate 5%
Ether 10% Potcrate 15%
Tween (80) 5% potassium bichromate 15%
Unslaked lime 5% water 30%.
(3), the selected participation material of system ingredients is:
Methyl alcohol 20% potassium permanganate 4%
Ether 5% Potcrate 16%
Tween (80) 4% potassium bichromate 16%
Unslaked lime 6% water 29%.
(4), the selected participation material of system ingredients is:
Methyl alcohol 16% potassium permanganate 6%
Ether 9% Potcrate 14%
Tween-80 6% potassium bichromate 14%
Unslaked lime 4% water 31%.
The consumption of this combustion-supporting desulfurization coal-saving agent in fire coal per ton is 1～1.5 kilogram, joins in the coal behind 30～150 times of the dilute with waters during use, and itself and fire coal are mixed as far as possible.Combustion-supporting desulfurization coal-saving agent of the present invention is used on user's bunker coal, after tested, and desulfurization degree 35～45%, coal saving rate 18～31%, boiler thermal output improves 5～10%, and concentration, the blackness of flue dust obviously alleviate, and can effectively prevent the generation of boiler coke accident.
The present invention's advantage compared with prior art is: add after methyl alcohol and these two kinds of materials of ether in the fire coal, can impel coal-fired catching fire in advance, prolong the burning of coal time relatively, make the more complete of fired coal combustion.Tween-80 enough is penetrated in the fire coal, makes fire coal become bulk when burning, form the strong additive of combustion-supporting property, and easy-sintering does not generate bulk.Unslaked lime adds the calcium hydroxide and the coal-fired sulfurous gas generation calcium sulfate of emitting that generate behind the water can discharge with slag, has good sweetening effectiveness, and potassium bichromate also is good sweetening agent.Potassium permanganate, potassium bichromate are heated and can be decomposited oxygen, make coal enter boiler and add behind the oxygenant under 240 ℃～800 ℃ situations that are in oxygen enrichment all the time and burn, and finish combustion-supporting purpose; Because combustion position improves, inflammable gas in the boiler smoke and suspension carbon granule can obtain abundant after-flame, thereby have reached reduction blackness of exhaustion grade, improve boiler thermal output, reach to save coal-fired purpose.The cinder structure that potassium bichromate can impel flyash to form is changed into the cinder structure of crystal type by vitreous texture, impel the cinder of hard shape to be transformed into pore shape, brittle structure, make flyash can not form hard cinder, and this structure can be good at improving cindery melting temperature.Unslaked lime is that scorch retarder also can improve cindery melting temperature.These two kinds of scorch retarder unite use, the generation of fundamentally having stopped the boiler coke phenomenon.
Embodiment
The present invention is a kind of combustion-supporting, desulfating coal-saving additive that is used for bunker coal, and the industrial chemicals of selecting for use is commercially available technical grade industrial chemicals.According to above-mentioned technical process, ingredients by weight percentage, list as follows with embodiment:
Embodiment 1,
The selected participation material of system ingredients is:
Methyl alcohol 15% potassium permanganate 5%
Ether 10% Potcrate 15%
Tween (80) 5% potassium bichromate 15%
Unslaked lime 5% water 30%
Manufacture craft is: at first 5 kilograms of unslaked limes are added 2 kilograms of milk of limes of making 7 kilograms of entry; With remaining 30-2=28 kg of water, be heated to 65 ℃～70 ℃ stand-by; 5 kilograms in potassium permanganate, 15 kilograms in Potcrate, potassium bichromate are joined in 65 ℃～70 ℃ above-mentioned 28 kilograms hot water for 15 kilograms, evenly stir through machine mixer and made the aqueous solution in 15 minutes; Tween-80 with the aqueous solution made and 15 kilograms of methyl alcohol and 5 kilograms mixes then, evenly stir after 20 minutes with 7 kilograms milk of lime with stirrer again and mix, evenly stir 20 minutes one-tenth mixed solutions with stirrer, add 10 kilograms of ether at last, stirred 10 minutes with stirrer again, place 30 ℃ reactor insulation reaction 1.5 hours, promptly obtain liquid 100 kilograms combustion-supporting desulfurization coal-saving additive.
Embodiment 2
The selected participation material of system ingredients is:
Methyl alcohol 20% potassium permanganate 4%
Ether 5% Potcrate 16%
Tween (80) 4% potassium bichromate 16%
Unslaked lime 6% water 29%
Manufacture craft is: at first 6 kilograms of unslaked limes are added 2.4 kilograms of entry and make 8.4 kilograms of milk of limes; With remaining 29-2.4=26.6 kg of water, be heated to 65 ℃～70 ℃ stand-by; 4 kilograms in potassium permanganate, 16 kilograms in Potcrate, potassium bichromate joins in 65 ℃～70 ℃ above-mentioned 26.6 kilograms hot water for 16 kilograms, make the aqueous solution through even stirring of machine mixer, then with 20 kilograms of the aqueous solution made and methyl alcohol, 4 kilograms tween-80 mixes, stir after 10 minutes with 8.4 kilograms milk of lime with stirrer again and mix, evenly stirred 20 minutes with stirrer, add 5 kilograms of ether at last, evenly stirred 10 minutes with stirrer again, place 30 ℃ of reactor insulation reaction 1 hour, and promptly obtained liquid 100 kilograms combustion-supporting desulfurization coal-saving additive.
Embodiment 3
The selected participation material of system ingredients is:
Methyl alcohol 16% potassium permanganate 6%
Ether 9% Potcrate 14%
Tween-80 6% potassium bichromate 14%
Unslaked lime 4% water 31%
Manufacture craft is: at first 4 kilograms of unslaked limes are added 1.6 kilograms of entry and make 5.6 kilograms of milk of limes, with remaining 31-1.4=29.4 kg of water, be heated to 65 ℃～70 ℃ stand-by: 6 kilograms in potassium permanganate, 14 kilograms in Potcrate, potassium bichromate joins in 65 ℃～70 ℃ above-mentioned 29.4 kilograms hot water for 14 kilograms, make the aqueous solution through even stirring of machine mixer, then with 16 kilograms of the aqueous solution made and methyl alcohol, 6 kilograms tween-80 mixes, mix with 5.6 kilograms of milk of limes after 10 minutes with the even stirring of stirrer again, evenly stirred 20 minutes with stirrer, add 9 kilograms of ether at last, evenly stirred 10 minutes with stirrer again, place 30 ℃ of reactor insulation reaction 1 hour, and promptly obtained liquid 100 kilograms combustion-supporting desulfurization coal-saving additive.
Embodiment 4
The selected participation material of system ingredients is:
Methyl alcohol 15% potassium permanganate 5%
Ether 8% Potcrate 15%
Tween-80 4% potassium bichromate 15%
Unslaked lime 6% water 32%
Manufacture craft is: at first 6 kilograms of unslaked limes are added 2.4 kilograms of entry and make 8.4 kilograms of milk of limes, with remaining 32-2.4=29.6 kg of water, be heated to 65 ℃～70 ℃ stand-by: 5 kilograms in potassium permanganate, 15 kilograms in Potcrate, potassium bichromate joins in 65 ℃～70 ℃ above-mentioned 29.6 kilograms hot water for 15 kilograms, make the aqueous solution through even stirring of machine mixer, then with 15 kilograms of the aqueous solution made and methyl alcohol, 4 kilograms of tween-80s mix, mix with 8.4 kilograms of milk of limes after 10 minutes with the even stirring of stirrer again, evenly stirred 20 minutes with stirrer, add 8 kilograms of ether at last, evenly stirred 10 minutes with stirrer again, place 30 ℃ of reactor insulation reaction 1 hour, and promptly obtained liquid 100 kilograms combustion-supporting desulfurization coal-saving additive.
Because coal-fired composition characteristic differs bigger, select for use the relativity ratio that participates in material there are differences,
Can assist to add and contain saltpetre SODIUMNITRATE complex compound (KNO ↓ [3] Na No ↓ [3]) 10%, yellow soda ash or salt of wormwood 40%, sodium-chlor or Repone K 38%, γ-ferric oxide 2.5%, aluminum oxide 1.5%, silicon oxide 2%, magnesium oxide 4%, the fire coal of calcium oxide 4% does not influence the combustion-supporting anti-coking effect of the present invention.
Make additive according to above-mentioned the same manner in the ignition dope, in the system ingredients, participate in cooperating the material amount ratio can reference:
Ignition dope-methyl alcohol: ether: tween-80=3: 2: 1 or 3.2: 1.8: 1.2
Oxygenant-potassium permanganate: Potcrate: potassium bichromate=1: 3: 3 or 1.0: 2.8: 2.8
Desulfurization, anti-coking-unslaked lime, potassium permanganate, Potcrate and potassium bichromate by in the oxygenant.
Claims (4)
1. combustion-supporting, desulfating coal-saving additive that is used for bunker coal, it is characterized in that: by weight percentage, participation system ingredients in the additive is by ignition dope 24～35%, oxygenant 32～38%, sweetening agent 4～28%, anti-coking agent 18～22% constitutes, and employing adds hot water and makes lysate, and the system ingredients material total amount of supplying its additive with water is 100%; Ignition dope in the system ingredients is made up of methyl alcohol 15～20%, ether 5～10% and 4～6% tween-80s; Oxygenant is made up of potassium permanganate 4～6%, Potcrate 14～16%, potassium bichromate 14～16%; Sweetening agent mainly is a unslaked lime 4～6%, the participation effect of potassium permanganate, and have potassium bichromate in the oxygenant to play a part catalyzer to account for 4～28% and constitute; The anti-coking agent mainly is that potassium bichromate, unslaked lime 4～6% are finished, and all the other are water, nominally water accounts for 28～32%, makes lysate with adding hot water; Selected participation material and its manufacture craft flow process are:
(1), at first unslaked lime being added normal-temperature water, to make milk of lime stand-by;
(2), another part water is heated to 60 ℃～75 ℃ and becomes hot water; Potassium permanganate, Potcrate, potassium bichromate were pulverized 20～60 mesh sieve, added in the hot water, and evenly stirred through machine mixer and made the aqueous solution in 15 minutes;
(3), then with the aqueous solution of making, mix with methyl alcohol, tween-80, evenly stir with stirrer again and made mixed solution in 10～20 minutes;
(4), mixed solution is mixed with milk of lime, evenly stirred 20～30 minutes, just become preparation liquid with stirrer;
(5), in preparation liquid, add ether, again with the even stirring of stirrer 10～20 minutes;
(6), placed 30 ℃ of vessel reactor insulation reaction 1～2 hour;
(7), obtain liquid combustion-supporting, desulfurization, coal-saving additive, package spare respectively according to quantity.
2. combustion-supporting, the desulfating coal-saving additive that is used for bunker coal according to claim 1 is characterized in that: with regard to its identical manufacture craft flow process, the selected participation inventory of additive is:
Methyl alcohol 15% potassium permanganate 5%
Ether 10% Potcrate 15%
Tween (80) 5% potassium bichromate 15%
Unslaked lime 5% water 30%.
3. combustion-supporting, the desulfating coal-saving additive that is used for bunker coal according to claim 1, it is characterized in that: with regard to its identical manufacture craft flow process, the selected participation inventory of additive is:
Methyl alcohol 20% potassium permanganate 4%
Ether 5% Potcrate 16%
Tween (80) 4% potassium bichromate 16%
Unslaked lime 6% water 29%.
4. combustion-supporting, the desulfating coal-saving additive that is used for bunker coal according to claim 1 is characterized in that: with regard to its identical manufacture craft flow process, the selected participation inventory of additive is:
Methyl alcohol 15% potassium permanganate 5%
Ether 8% Potcrate 15%
Tween-80 4% potassium bichromate 15%
Unslaked lime 6% water 32%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100001418A CN101230301A (en) | 2008-01-04 | 2008-01-04 | Combustion-supporting, desulfurization and coal-saving additive used for boiler fire coal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100001418A CN101230301A (en) | 2008-01-04 | 2008-01-04 | Combustion-supporting, desulfurization and coal-saving additive used for boiler fire coal |
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|---|---|
| CN101230301A true CN101230301A (en) | 2008-07-30 |
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ID=39897123
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|---|---|---|---|
| CNA2008100001418A Pending CN101230301A (en) | 2008-01-04 | 2008-01-04 | Combustion-supporting, desulfurization and coal-saving additive used for boiler fire coal |
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| CN102660348A (en) * | 2012-05-23 | 2012-09-12 | 夏秀金 | Coal economizing agent and preparation method thereof |
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| CN102206529A (en) * | 2011-04-21 | 2011-10-05 | 阳泉鑫环高新技术有限责任公司 | Multifunctional rare earth sulfur-fixing denitration energy-conservation additive |
| CN102732354A (en) * | 2012-02-29 | 2012-10-17 | 珠海慧生能源技术发展有限公司 | Municipal domestic garbage biomass environment-friendly renewable energy additive, and preparation method thereof |
| CN102732353A (en) * | 2012-02-29 | 2012-10-17 | 珠海慧生能源技术发展有限公司 | Paper sludge biomass environment-friendly renewable energy additive and preparation method thereof |
| CN102660348A (en) * | 2012-05-23 | 2012-09-12 | 夏秀金 | Coal economizing agent and preparation method thereof |
| CN102660348B (en) * | 2012-05-23 | 2016-09-28 | 徐苍 | A kind of coal-saving agent and preparation method thereof |
| CN102825060A (en) * | 2012-09-10 | 2012-12-19 | 武汉钢铁(集团)公司 | Treatment method for chromium-containing waste residue in steel industry |
| CN102825060B (en) * | 2012-09-10 | 2015-03-25 | 武汉钢铁(集团)公司 | Treatment method for chromium-containing waste residue in steel industry |
| CN103551169A (en) * | 2013-10-28 | 2014-02-05 | 陕西驭腾实业有限公司 | Hydrodeoxygenation denitrification coal modifying catalyst as well as preparation method and application thereof |
| CN103551169B (en) * | 2013-10-28 | 2015-08-05 | 陕西驭腾实业有限公司 | A kind of hydrogenation deoxidation denitrogenation ature of coal modified catalyst and its preparation method and application |
| CN105296050A (en) * | 2015-10-15 | 2016-02-03 | 阳开金 | Coal-saving combustion-supporting agent and preparation method thereof |
| CN105923616A (en) * | 2016-04-13 | 2016-09-07 | 四川绵竹市盘龙矿物质有限责任公司 | Method for improving product crystallization in production technology of feed grade calcium hydrophosphate |
| CN111171890A (en) * | 2020-03-18 | 2020-05-19 | 中山市绿浪助剂有限公司 | Energy-saving coal combustion improver |
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