CN106635243A - Preparation method of persistent non-corrosive type coal combustion-supporting agent - Google Patents
Preparation method of persistent non-corrosive type coal combustion-supporting agent Download PDFInfo
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- CN106635243A CN106635243A CN201611168684.1A CN201611168684A CN106635243A CN 106635243 A CN106635243 A CN 106635243A CN 201611168684 A CN201611168684 A CN 201611168684A CN 106635243 A CN106635243 A CN 106635243A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/02—Inorganic or organic compounds containing atoms other than C, H or O, e.g. organic compounds containing heteroatoms or metal organic complexes
- C10L2200/029—Salts, such as carbonates, oxides, hydroxides, percompounds, e.g. peroxides, perborates, nitrates, nitrites, sulfates, and silicates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/04—Organic compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a preparation method of a persistent non-corrosive type coal combustion-supporting agent and belongs to the technical field of combustion-supporting agents. According to the preparation method, metal oxide in coal gangue powder is compounded with potassium chlorate and potassium permanganate to be coated with phenolic resin, the phenolic resin has the characteristic of high-temperature resistance, the coated potassium chlorate and potassium permanganate are decomposed to generate oxygen, the volume of the phenolic resin is enlarged, coal particles are fluffy, and the contact area of the coal and the oxygen is increased; besides, the pyrolytic combustion-supporting oxygen is released after the phenolic resin is carbonized, the combustion efficiency of the coal is enhanced and the combustion-supporting action time is increased. The preparation method comprises the steps of crushing clean waste coal gangue to obtain ball-milled powder; stirring and mixing the ball-milled powder and deionized water; filtering, drying and grinding to obtain impurity-removed coal gangue powder; ball-milling and drying the impurity-removed coal gangue powder, potassium chlorate and potassium permanganate, then mixing with hexamethylenetetramine and phenolic resin and putting the mixture into a polytetrafluoroethylene mold; and drying and ball-milling to obtain the persistent non-corrosive type coal combustion-supporting agent.
Description
Technical field
The invention discloses a kind of preparation method of persistently corrosion-free type coal combustion-promoting agents, belongs to combustion adjuvant technical field.
Background technology
The energy is the material base of the development of the national economy.Based on coal, coal accounts for primary energy to the primary energy of China
70% or so of consumption.Because combustion technology falls behind, incomplete combustion, the low reason of efficiency of combustion, the not high colm of grade is not
It is utilized or using being seldom wasted, energy waste problem is than more serious.The main pollution that coal is produced in combustion
Thing has:Carbon dioxide, carbon monoxide, sulfur dioxide, nitrogen dioxide, nitric oxide, dust etc..Air pollution is caused, is also
Form the principal element of haze.Therefore, the efficiency of combustion of coal is improved, the discharge of pollutant is reduced, the clean efficiently combustion of coal is realized
Burn, not only with higher economic benefit, while also having great social effect.
Coal burning is the oxidizing process of a complexity, can be generally divided into volatilization effusion, burning and the combustion of catching fire of carbon granule
Burn.Combustion improver can reduce the apparent activation energy of coal burning, reduce the ignition point of coal and accelerate coal burning speed;Energy
Accelerate the strong fracture of various combinations during coal pyrolysis, improve the speed of separating out of coal volatile matter.In Coal combustion improver
Middle addition desulfurizing agent can make coal reduce the discharge of sulfur dioxide in combustion;Drop is added in Coal combustion improver
Dirt agent can make coal reduce the discharge of dust in combustion, and combustion improver is thus added during coal burning
The efficiency of combustion of coal can not only be improved, while also reducing the discharge of coal burning process contaminant.But, existing industry,
Civil coal combustion adjuvant only stresses combustion-supporting effect, single to consider from oxygen supply angle, and the duration is short, and momentary action is strong, in coal
Combustible can not fully burn, it is impossible to the discharge of poisonous waste played in effect of coal saving, and flue gas is exceeded;Some combustion adjuvants
The drawbacks of overcoming traditional coal combustion-promoting agents abrupt release oxygen, aflame coal can sufficiently be cracked, be burnt, and be filled
Divide and release energy, reduce harmful gas emission, but itself coke-knocking descaling DeGrain to boiler heating surface, still there is heat
Loss of efficiency.
The content of the invention
The technical problem to be solved:There is certain corrosivity to boiler heating surface for traditional combustion adjuvant, drop
Low boiler service life, the duration is short, and momentary action is strong, it is impossible to make coal fully burn, the sulfur content and dust in flue gas
Content is more, causes the defect of environmental pollution, there is provided one kind is from metal oxide in gangue powder and potassium chlorate and Gao Meng
Sour potassium compounding, coats into phenolic resin, because phenolic resin has high-temperature stability, makes the potassium chlorate and metal oxidation of cladding
Thing decomposes generation oxygen, increases phenolic resin volume, makes coal particles fluffy, increases coal and oxygen contact area, while
By the combustion oxygen release of pyrolysis after phenolic resin charing, strengthen coal combustion efficiency, the method for improving combustion-supporting action time.This
Clean discarded gangue is crushed to obtain ball-milled powder by invention, and is mixed with deionized water stirring, filtration drying, grinds to obtain removal of impurities
Gangue powder, mixes after being dried with the ball milling such as potassium chlorate, potassium permanganate with hexamethylenetetramine and phenolic resin, is poured into poly-
In Teflon mold, it is dried after ball milling and lasting corrosion-free type coal combustion-promoting agents is obtained.
To solve above-mentioned technical problem, the present invention is using technical scheme as described below:
(1)Discarded gangue is chosen, the gangue fragment that particle diameter is 1cm is cleaned and be crushed to, subsequently by gangue fragment
In being placed in ball grinder, 3~5h of ball milling under 250~300r/min, the mesh sieve of subsequent mistake 120~130 collects to obtain ball-milled powder;
(2)In mass ratio 1:10, ball-milled powder is mixed with deionized water stirring, sonic oscillation processes 10 under 200~300W
~15min, subsequently 45~60min of stirring mixing under 550~600r/min, filters and collects filter cake, does at 75~85 DEG C
Dry 6~8h, mills and is prepared into removal of impurities gangue powder;
(3)Count by weight, 15~20 parts of potassium chlorate, 5~10 parts of potassium permanganate, 45~50 parts of above-mentioned preparations are weighed respectively
Removal of impurities gangue powder and 15~20 parts of absolute ethyl alcohols are placed in ball grinder, and 3~5h of ball milling, treats ball under 250~300r/min
After the completion of mill, 2~3h is dried at 65~70 DEG C, the mesh sieve of subsequent mistake 200 collects to obtain mixing and ball milling powder;
(4)Count by weight, mixing and ball milling powder, 3~5 parts of hexamethylenetetramines of 15~20 parts of above-mentioned preparations are weighed respectively
It is placed in beaker with 45~50 parts of phenolic resin 2127, stirring mixes and pours into Teflon mould, 140~150
2~3h of dry solidification at DEG C, it is to be solidified after the completion of, the demoulding simultaneously collects solidification hybrid resin, and in being placed on ball grinder, ball milling is simultaneously
60~70 mesh sieves are crossed, collecting ball milling particle can be prepared into a kind of persistently corrosion-free type coal combustion-promoting agents.
The present invention application process be:When raw coal water content is more than 12%, by the lasting corrosion-free moulded coal obtained by the present invention
Charcoal combustion adjuvant is directly admixed in raw coal, and it is 5 to control combustion adjuvant addition with coal proportion:1000~15:1000, using stirring
Machine adds into boiler after stirring.After testing, the lasting corrosion-free type coal combustion-promoting agents section obtained by the present invention
Coal efficiency is 20%~30%, and heat increased 15~35%, and cinders content reduces 5~15%, while increased burning time, is dropped
User's non-hazardous are acted on by the sulfur content and dust content in low flue gas.
Compared with additive method, Advantageous Effects are the present invention:
(1)A kind of persistently corrosion-free type coal combustion-promoting agents obtained by the present invention, save coal substantially after addition, heat can increase by 15
~35%, especially low-calorie coal burning facilitation effect is become apparent from;
(2)A kind of persistently corrosion-free type coal combustion-promoting agents obtained by the present invention, can be greatly reduced the sulfur content in flue gas and powder
The content of dirt, sulfur content can reduce by 50~80%, and dust content can be reduced between 50~80%;
(3)A kind of persistently corrosion-free type coal combustion-promoting agents obtained by the present invention, preparation process is simple, low production cost, it is easy to work
Industry metaplasia is produced.
Specific embodiment
Discarded gangue is chosen, the gangue fragment that particle diameter is 1cm is cleaned and be crushed to, subsequently by gangue fragment
In being placed in ball grinder, 3~5h of ball milling under 250~300r/min, the mesh sieve of subsequent mistake 120~130 collects to obtain ball-milled powder;Press
Mass ratio 1:10, ball-milled powder is mixed with deionized water stirring, sonic oscillation processes 10~15min under 200~300W, with
Afterwards 45~60min of stirring mixing under 550~600r/min, filters and collects filter cake, and 6~8h is dried at 75~85 DEG C, grinds
Mill is prepared into removal of impurities gangue powder;Count by weight, weigh respectively 15~20 parts of potassium chlorate, 5~10 parts of potassium permanganate, 45
The removal of impurities gangue powder of~50 parts of above-mentioned preparations and 15~20 parts of absolute ethyl alcohols are placed in ball grinder, in 250~300r/min
3~5h of lower ball milling, after the completion for the treatment of ball milling, is dried 2~3h at 65~70 DEG C, and the mesh sieve of subsequent mistake 200 collects to obtain mixing and ball milling powder
End;Count by weight, mixing and ball milling powder, 3~5 parts of hexamethylenetetramines and 45 of 15~20 parts of above-mentioned preparations are weighed respectively
~50 parts of phenolic resin 2127 are placed in beaker, and stirring mixes and pours into Teflon mould, at 140~150 DEG C
2~3h of dry solidification, it is to be solidified after the completion of, the demoulding is simultaneously collected solidification hybrid resin, in being placed on ball grinder, ball milling and crosses 60
~70 mesh sieves, collecting ball milling particle can be prepared into a kind of persistently corrosion-free type coal combustion-promoting agents.
Example 1
Discarded gangue is chosen, the gangue fragment that particle diameter is 1cm is cleaned and be crushed to, is subsequently placed in gangue fragment
In ball grinder, the ball milling 3h under 250r/min, the mesh sieve of subsequent mistake 120 collects to obtain ball-milled powder;In mass ratio 1:10, by ball milling
Powder mixes with deionized water stirring, and sonic oscillation processes 10min under 200W, the subsequently stirring mixing under 550r/min
45min, filters and collects filter cake, and at 75 DEG C 6h is dried, and mills and is prepared into removal of impurities gangue powder;Count by weight, point
15 parts of potassium chlorate of another name amount, 5 parts of potassium permanganate, the removal of impurities gangue powder of 45 parts of above-mentioned preparations and 15 parts of absolute ethyl alcohols are placed in ball
In grinding jar, the ball milling 3h under 250r/min after the completion for the treatment of ball milling, is dried 2h at 65 DEG C, the mesh sieve of subsequent mistake 200, and collecting to mix
Close ball-milled powder;Count by weight, weigh respectively the mixing and ball milling powder of 15 parts of above-mentioned preparations, 3 parts of hexamethylenetetramines and
45 parts of phenolic resin 2127 are placed in beaker, and stirring mixes and pours into Teflon mould, the dry solidification at 140 DEG C
2h, it is to be solidified after the completion of, the demoulding is simultaneously collected solidification hybrid resin, in being placed on ball grinder, ball milling and crosses 60 mesh sieves, collects ball
Abrasive particle can be prepared into a kind of persistently corrosion-free type coal combustion-promoting agents.
When raw coal water content is 12%, the lasting corrosion-free type coal combustion-promoting agents obtained by the present invention are directly admixed in original
In coal, use ratio is 5:1000, after being stirred using grinding machine or mixer by use.After testing, institute of the present invention
Lasting corrosion-free type coal combustion-promoting agents economize on coal efficiency for 20%, heat increased 15%, and cinders content reduces 5%, while increasing
Burning time is added, has reduced sulfur content and dust content in flue gas, user's non-hazardous have been acted on.
Example 2
Discarded gangue is chosen, the gangue fragment that particle diameter is 1cm is cleaned and be crushed to, is subsequently placed in gangue fragment
In ball grinder, the ball milling 5h under 300r/min, the mesh sieve of subsequent mistake 130 collects to obtain ball-milled powder;In mass ratio 1:10, by ball milling
Powder mixes with deionized water stirring, and sonic oscillation processes 15min under 300W, the subsequently stirring mixing under 600r/min
60min, filters and collects filter cake, and at 85 DEG C 8h is dried, and mills and is prepared into removal of impurities gangue powder;Count by weight, point
20 parts of potassium chlorate of another name amount, 10 parts of potassium permanganate, the removal of impurities gangue powder of 50 parts of above-mentioned preparations and 20 parts of absolute ethyl alcohols are placed in
In ball grinder, the ball milling 5h under 300r/min after the completion for the treatment of ball milling, is dried 3h at 70 DEG C, and the mesh sieve of subsequent mistake 200 is collected
Mixing and ball milling powder;Count by weight, mixing and ball milling powder, 5 parts of hexamethylenetetramines of 20 parts of above-mentioned preparations are weighed respectively
It is placed in beaker with 50 parts of phenolic resin 2127, stirring mixes and pours into Teflon mould, is dried at 150 DEG C solid
Change 3h, it is to be solidified after the completion of, the demoulding is simultaneously collected solidification hybrid resin, in being placed on ball grinder, ball milling and crosses 70 mesh sieves, collection
Ball milling particle can be prepared into a kind of persistently corrosion-free type coal combustion-promoting agents.
When raw coal water content is 20%, the lasting corrosion-free type coal combustion-promoting agents obtained by the present invention are directly admixed in original
In coal, use ratio is 15:1000, after being stirred using grinding machine or mixer by use.After testing, institute of the present invention
Lasting corrosion-free type coal combustion-promoting agents economize on coal efficiency for 30%, heat increased 35%, and cinders content reduces 15%, while
Burning time is increased, sulfur content and dust content in flue gas is reduced, user's non-hazardous are acted on.
Example 3
Discarded gangue is chosen, the gangue fragment that particle diameter is 1cm is cleaned and be crushed to, is subsequently placed in gangue fragment
In ball grinder, the ball milling 4h under 275r/min, the mesh sieve of subsequent mistake 125 collects to obtain ball-milled powder;In mass ratio 1:10, by ball milling
Powder mixes with deionized water stirring, and sonic oscillation processes 12.5min under 250W, the subsequently stirring mixing under 575r/min
52.5min, filters and collects filter cake, and at 80 DEG C 7h is dried, and mills and is prepared into removal of impurities gangue powder;Count by weight,
It is anhydrous that 17.5 parts of potassium chlorate, 7.5 parts of potassium permanganate, the removal of impurities gangue powder of 47.5 parts of above-mentioned preparations and 17.5 parts are weighed respectively
Ethanol is placed in ball grinder, the ball milling 4h under 275r/min, after the completion for the treatment of ball milling, 2.5h, subsequent mistake 200 is dried at 67.5 DEG C
Mesh sieve, collects to obtain mixing and ball milling powder;Count by weight, respectively weigh 17.5 parts of above-mentioned preparations mixing and ball milling powder, 4 parts
Hexamethylenetetramine and 47.5 parts of phenolic resin 2127 are placed in beaker, and stirring mixes and pours into Teflon mould,
The dry solidification 2.5h at 145 DEG C, it is to be solidified after the completion of, the demoulding simultaneously collects solidification hybrid resin, in being placed on ball grinder, ball
65 mesh sieves are ground and cross, collecting ball milling particle can be prepared into a kind of persistently corrosion-free type coal combustion-promoting agents.
When raw coal water content is 16%, the lasting corrosion-free type coal combustion-promoting agents obtained by the present invention are directly admixed in original
In coal, use ratio is 10:1000, after being stirred using grinding machine or mixer by use.After testing, institute of the present invention
Lasting corrosion-free type coal combustion-promoting agents economize on coal efficiency for 25%, heat increased 25%, and cinders content reduces 10%, while
Burning time is increased, sulfur content and dust content in flue gas is reduced, user's non-hazardous are acted on.
Claims (1)
1. a kind of preparation method of persistently corrosion-free type coal combustion-promoting agents, it is characterised in that concrete preparation process is:
(1)Discarded gangue is chosen, the gangue fragment that particle diameter is 1cm is cleaned and be crushed to, subsequently by gangue fragment
In being placed in ball grinder, 3~5h of ball milling under 250~300r/min, the mesh sieve of subsequent mistake 120~130 collects to obtain ball-milled powder;
(2)In mass ratio 1:10, ball-milled powder is mixed with deionized water stirring, sonic oscillation processes 10 under 200~300W
~15min, subsequently 45~60min of stirring mixing under 550~600r/min, filters and collects filter cake, does at 75~85 DEG C
Dry 6~8h, mills and is prepared into removal of impurities gangue powder;
(3)Count by weight, 15~20 parts of potassium chlorate, 5~10 parts of potassium permanganate, 45~50 parts of above-mentioned preparations are weighed respectively
Removal of impurities gangue powder and 15~20 parts of absolute ethyl alcohols are placed in ball grinder, and 3~5h of ball milling, treats ball under 250~300r/min
After the completion of mill, 2~3h is dried at 65~70 DEG C, the mesh sieve of subsequent mistake 200 collects to obtain mixing and ball milling powder;
(4)Count by weight, mixing and ball milling powder, 3~5 parts of hexamethylenetetramines of 15~20 parts of above-mentioned preparations are weighed respectively
It is placed in beaker with 45~50 parts of phenolic resin 2127, stirring mixes and pours into Teflon mould, 140~150
2~3h of dry solidification at DEG C, it is to be solidified after the completion of, the demoulding simultaneously collects solidification hybrid resin, and in being placed on ball grinder, ball milling is simultaneously
60~70 mesh sieves are crossed, collecting ball milling particle can be prepared into a kind of persistently corrosion-free type coal combustion-promoting agents.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108727990A (en) * | 2018-05-15 | 2018-11-02 | 谭亚 | A kind of preparation method of stainless steel polishing wax |
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