CN108795534A - A kind of boiler decoking agent - Google Patents
A kind of boiler decoking agent Download PDFInfo
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- CN108795534A CN108795534A CN201810737458.3A CN201810737458A CN108795534A CN 108795534 A CN108795534 A CN 108795534A CN 201810737458 A CN201810737458 A CN 201810737458A CN 108795534 A CN108795534 A CN 108795534A
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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
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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
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/04—Use of additives to fuels or fires for particular purposes for minimising corrosion or incrustation
Abstract
The invention discloses a kind of boiler decoking agents, belong to coke-removing agent field.The present invention is using zinc powder and crystalline flake graphite as raw material, expansion prepares expanded graphite alkene after carrying out intercalation to crystalline flake graphite with concentrated nitric acid, ball grinding zinc powder is superfine powder as zinc source, the composite material of well-formed is made using ethyl alcohol as dispersant, and starch storage crop, in preparation process, composite material can be filled in starch-hydrocolloid hole, and it can be used as crosslinking agent, starch molecular chain is set to crosslink, to keep the starch surface of porous structure finer and close, the internal active ingredient deposited is avoided to prepare and be lost in storing process.The present invention solves the problems, such as that the burnt dirty efficiency of current boiler decoking agent removal pot wall is low.
Description
Technical field
The invention belongs to coke-removing agent fields, and in particular to a kind of boiler decoking agent.
Background technology
Boiler decoking agent is process according to a certain percentage by inorganic compound, and appearance is the graininess of white, Huang
Color powder crystalloid generates a large amount of chemical fumes when high-temperature burner hearth is sent into the agent, and be fully distributed in each heat of burner hearth and hand over
Exchange surface makes the crock on boiler heating surface become porous, loose, so that its easy dusting, falling off.Chain furnace clinker is again at present
Secondary the case where making fuel use, is commonplace, and the high clinker of phosphorus content causes huge pollution to environment.And boiler running process
In coking, dust stratification be perplex boiler industry a great problem.Boiler in use, due to its specific use environment and
Corrosion and fouling can usually occur for the factors such as the use management level of user, Boiler Metallic surface, and in burning, coal or oil,
Always contain sulphur, moisture and other dirts.It is formed by flue gas after its burning, constitutes SO3-H2O- air systems, with cigarette
Air-flow causes to form corrosivity extremely strong sulfate and sulphite on boiler heating surface through contacting with metal when tube wall
（Na2SO4、CaSO4、MgSO4、Al2(SO4)3）Deng.These minerals promote boiler thermal efficiency big in ash shape, hard scale shape, molten shape
Big to decline, energy consumption increases, and corrodes metal surface, shortens boiler service life etc..It is heavy then limit boiler on-load ability, or even make
Accident is devoked at blowing out.In order to slow down or prevent boiler coke, reinforces firing optimization and selective sootblowing in operation, use decoking
Agent is to slow down the effective means of boiler coke.
Currently used coke-removing agent product is mostly solid powder, and main component is villaumite, metal oxide, chromic salts, dilute
Native oxide.Although can play the role of certain decoking, effect unobvious form vitreum after some addition burner hearths, no
But coking is not removed, instead obtains close-burning more firm.It would therefore be highly desirable to develop a kind of efficient and environment-friendly type boiler decoking agent product.
Invention content
The technical problems to be solved by the invention：The low problem of the burnt dirty efficiency of pot wall is removed for current boiler decoking agent,
A kind of boiler decoking agent is provided.
In order to solve the above technical problems, the present invention is using technical solution as described below：
A kind of boiler decoking agent, according to the mass fraction, including following component：0.2 ~ 0.5 part of auxiliary agent, 30 ~ 50 parts of solvents, feature
It is, further includes：20 ~ 40 parts of combination deashing material, 25 ~ 45 parts of compound combustion-supporting ingredients.
The auxiliary agent：In mass ratio 4：1~2：1 takes precipitated calcium carbonate, borax, zeolite mixing to get auxiliary agent.
The solvent：In mass ratio 1 ~ 4：2：10 take acetone, pyridine, water mixing to get solvent.
The preparation method of the combination deashing material, includes the following steps：
（1）In mass ratio 1：5 ~ 8 take zinc powder, acetic acid, and under nitrogen protection, wet ball grinding obtains ball milling material, takes crystalline flake graphite in powder
Broken, sieving takes sieving particle in mass ratio 4：1 ~ 2 is added concentrated nitric acid, at 28 ~ 35 DEG C, stirs, and filtering takes filter residue to clean,
It is dry, dried object is obtained, is heat-treated, is obtained expanded graphite, take expanded graphite in mass ratio 4：1~2：15 ~ 20 are added ball milling material, ethyl alcohol
Solution mixes, supersonic oscillations, stands, and centrifugation takes centrifugation suspension, is dried in vacuo, obtains compound material, spare；
（2）In mass ratio 3 ~ 5：1：0.2：15 ~ 20 take acrylamide, 2- acrylamide -2- toluenesulfonic acids, cetyl front three
Base ammonium bromide, water are mixed, and adjust pH, stand, and the initiator mixing of acrylamide quality 35 ~ 50% is added, leads to nitrogen and protects
Shield, closed 10 ~ 12h obtain thickening agent；
（3）In mass ratio 6：1：1~2：3 take compound material, thickening agent, auxiliary material, concentration rice washing water to be mixed, and obtain mixed liquor, microwave
Processing discharges to get combination deashing material.
The step（2）In initiator：In mass ratio 5：1 ~ 2 takes ammonium persulfate, sodium hydrogensulfite mixing to get initiation
Agent.
The step（3）In auxiliary material：In 90 ~ 100 DEG C, water intaking in mass ratio 8 ~ 12：1 addition zirconium oxychloride mixing is stirred
It mixes, the glycerine of 2 ~ 5 times of zirconium oxychloride quality, the citric acid of 1 ~ 4 times of zirconium oxychloride quality is added, adjusts pH, keeps the temperature to get auxiliary
Agent.
The step（3）In concentration rice washing water：In mass ratio 1：10 ~ 15 take rice to carry out rice washing operation in water, obtain
Rice washing water takes rice washing water in mass ratio 6 ~ 8：1~2：1 is added Na2CO3、NaH2PO4Mixing obtains mixed liquor, is evaporated in vacuo to substance
Long-pending 20 ~ 35% are to get concentration rice washing liquid.
The preparation of the compound combustion-supporting ingredient：According to the mass fraction, take 20 ~ 35 parts of starch, 12 ~ 18 parts of oil phases, 3 ~ 6 parts
NaBH4, 10 ~ 15 parts of ammonium hydroxide be mixed, mixed liquid A is obtained, in 70 ~ 85 DEG C, in mass ratio 1：1~2：10 ~ 15 take Mg (NO3)2、K2CO3
It is mixed with water, obtains mixed liquid B, take mixed liquid B in mass ratio 1 ~ 2：5 are added mixed liquid A mixing, and ultrasonic wave dispersion is stored at room temperature old
Change, heating ageing, filtering takes filter residue and drying to get compound combustion-supporting ingredient.
The starch is any one in plantain starch, cornstarch, potato starch.
The oil phase is in mass ratio 1：2：5 ~ 8 take rilanit special, span-80, hexamethylene mixing to get oil phase.
Compared with other methods, advantageous effects are the present invention：
（1）The present invention expands preparation expansion using zinc powder and crystalline flake graphite as raw material after carrying out intercalation to crystalline flake graphite with concentrated nitric acid
Graphene, ball grinding zinc powder be superfine powder as zinc source, Preparing of Zinc Oxide interts expanded graphite, using ethyl alcohol as dispersant system
Composite material and the starch storage crop of well-formed are obtained, in preparation process, composite material can be filled in starch-hydrocolloid hole,
And crosslinking agent is can be used as, so that starch molecular chain is crosslinked, to keep the starch surface of porous structure finer and close, it is internal heavy to avoid
Long-pending active ingredient is being prepared and is being lost in storing process, in addition, combination deashing material active function groups can be in preparation process
In be heated after self-condensation reaction further occurs, the system of coke-removing agent is further reinforced in realization, in use, can be
It during fired coal combustion, quickly generates free radicals, plays the role of promoting fired coal combustion, furthermore it is also possible to improve the heat of starch
Conductance makes heat quickly introduce interiors of products in use, make product microcapsule structure occur microexplosion, the generation of microexplosion, one
Aspect can cause thermoresonance, generate second energy, and accelerate the generation of chemical reaction, generate a large amount of CO, N2O etc., and participate in firing
Reaction is burnt, to generate higher thermal energy, plays the discharge that can reduce nitrogen oxides while being sparing in the use of coal, it is on the other hand, micro-
During quick-fried, coal particles can be crashed to pieces, and to reduce coal particles grain size, improve its specific surface area, increase itself and air
Contact area makes its quick and complete burning at high temperature, and coal effect can be improved, and reduction coal imitates low sulfur-bearing metal salt in causing coke dirty
It generates, furthermore, after microexplosion generates, the release of the ingredients such as precipitated calcium carbonate, and it is scattered in boiler combustion chamber interior, the presence of magnesium salts,
The effect that catalysis coal burning can not only be played, is also used as sintering aid, makes the inanimate matter to suspend in boiler in high temperature item
It is sintered under part, is settled to make inanimate matter particle growth, reduce the generation of burnt dirt；
（2）Precipitated calcium carbonate in auxiliary agent of the present invention can play sulfur fixation in thermal histories, can reduce sulfate in pot coke
Formation, and the release of sulfur dioxide can be reduced, can this coke-removing agent first be sprayed into the heating surface more than the burnt dirt when use, wait for originally removing
Burnt agent is dripped naturally, pot wall it is aqueous below 5% when carry out thermal technology's work, the egg in concentration rice washing water in combination deashing material ingredient
White matter ingredient etc. can carry rock salt, and if silicate acts on burnt dirt, the gas focusing dirt that the protein that is heated generates generates exclusion
Effect, the silicate then generated again can loose burnt dirty system, the coke-removing agent ingredient of cooperation spray drippage acts on coal, raising
Thermal effect reduces sulfate, and generates chemical gas, is distributed in each heat-exchanger surface of burner hearth, make crock on boiler heating surface into
One step becomes porous, loose, so that its easy dusting, falling off, is remarkably improved decoking effect.
Specific implementation mode
Auxiliary agent：In mass ratio 4：1~2：1 takes precipitated calcium carbonate, borax, zeolite mixing to get auxiliary agent.
In mass ratio 1 ~ 4：2：10 take acetone, pyridine, water mixing to get solvent.
Auxiliary material：In 90 ~ 100 DEG C, water intaking in mass ratio 8 ~ 12：1 is added zirconium oxychloride mixing, is stirred with 200 ~ 400r/min
30 ~ 45min is added the glycerine of 2 ~ 5 times of zirconium oxychloride quality, the citric acid of 1 ~ 4 times of zirconium oxychloride quality, uses concentration
The NaOH solution of 0.1mol/L adjusts pH to 6.5 ~ 7.5, and 4 ~ 6h is to get adjuvant for heat preservation.
Concentrate rice washing water：In mass ratio 1：10 ~ 15 take rice to carry out rice washing operation in water, obtain rice washing water, take rice washing water
In mass ratio 6 ~ 8：1~2：1 is added Na2CO3、NaH2PO4Mixing, obtains mixed liquor, is evaporated in vacuo to the 20 of original volume in 60 ~ 75 DEG C
~ 35% to get concentration rice washing liquid.
Initiator：In mass ratio 5：1 ~ 2 takes ammonium persulfate, sodium hydrogensulfite mixing to get initiator.
Starch is any one in plantain starch, cornstarch, potato starch.
Oil phase is in mass ratio 1：2：5 ~ 8 take rilanit special, span-80, hexamethylene mixing to get oil phase.
The preparation method of combination deashing material, includes the following steps：
（1）In mass ratio 1：5 ~ 8 take zinc powder, 10% acetic acid of mass concentration, under nitrogen protection, with 300 ~ 350r/min wet method balls
12 ~ 15h is ground, ball milling material is obtained, crystalline flake graphite is taken to be crushed in pulverizer, crosses 120 mesh sieve, takes sieving particle in mass ratio 4：1 ~ 2 adds
Enter concentrated nitric acid, at 28 ~ 35 DEG C of water-bath, 20 ~ 35min is stirred with 300 ~ 450r/min, filtering takes filter residue to be cleaned with clear water to washing
After liquid is neutral, 65 ~ 80 DEG C of oven dryings are moved to constant weight, obtain dried object, take dried object in Muffle furnace, with 800 ~ 900 DEG C of heat
4 ~ 8min is handled, expanded graphite is obtained, takes expanded graphite in mass ratio 4：1~2：15 ~ 20 are added ball milling material, volume fraction is 20%
Ethanol solution mixes, and with 30kHz 20 ~ 35min of supersonic oscillations, stands 25 ~ 40min at room temperature, with 3000 ~ 4000r/min from
5 ~ 10min of the heart takes centrifugation suspension, is dried in vacuo 10 ~ 15h in 65 ~ 80 DEG C, obtains compound material, spare；
（2）In mass ratio 3 ~ 5：1：0.2：15 ~ 20 take acrylamide, 2- acrylamide -2- toluenesulfonic acids, cetyl front three
Base ammonium bromide, water mixing, after stirring 30 ~ 45min with 300 ~ 400r/min, with the NaOH solution of concentration 0.1mol/L adjust pH to
6.8 ~ 7.5,20 ~ 35min is stood at room temperature, and the initiator mixing of acrylamide quality 35 ~ 50% is added, leads to nitrogen protection, it is closed
10 ~ 12h obtains thickening agent；
（3）In mass ratio 6：1：1~2：3 take compound material, thickening agent, auxiliary material, concentration rice washing water mixing, are stirred with 350 ~ 500r/min
30 ~ 55min is mixed, mixed liquor is obtained, with 300W 8 ~ 12min of microwave treatment, is discharged to get combination deashing material.
The preparation of compound combustion-supporting ingredient：According to the mass fraction, 20 ~ 35 parts of starch, 12 ~ 18 parts of oil phases, 3 ~ 6 parts of NaBH are taken4、
The ammonium hydroxide mixing of 10 ~ 15 parts of concentration 0.1mol/L, stirs 20 ~ 35min with 300 ~ 500r/min, mixed liquid A is obtained, in water-bath 70 ~ 85
DEG C, in mass ratio 1：1~2：10 ~ 15 take Mg (NO3)2、K2CO3It is mixed with water, 20 ~ 40min is stirred with 250 ~ 400r/min, is obtained mixed
Liquid B takes mixed liquid B in mass ratio 1 ~ 2：5 are added mixed liquid A mixing, and ultrasonic wave disperses 10 ~ 15min, at room temperature still aging 2 ~ 5h
Afterwards, 40 ~ 60 DEG C of 2 ~ 3h of ageing are warming up to, filtering takes filter residue in 60 ~ 85 DEG C of oven dryings to constant weight to get compound combustion-supporting ingredient.
A kind of boiler decoking agent, according to the mass fraction, including following component：0.2 ~ 0.5 part of auxiliary agent, 30 ~ 50 parts of solvents,
It is characterized in that, further includes：20 ~ 40 parts of combination deashing material, 25 ~ 45 parts of compound combustion-supporting ingredients.
A kind of preparation method of boiler decoking agent, includes the following steps：
（1）According to the mass fraction, take 0.2 ~ 0.5 part of auxiliary agent, 30 ~ 50 parts of solvents, 20 ~ 40 parts of combination deashing material, 25 ~ 45 parts it is compound
Combustion-supporting ingredient；
（2）In 30 ~ 45 DEG C of water-bath, auxiliary agent, solvent, the mixing of combination deashing material are taken, 25 ~ 45min is stirred with 300 ~ 500r/min, is risen
Temperature is added compound combustion-supporting ingredient mixing, disperses 10 ~ 15min with 300W ultrasonic waves, be evaporated in vacuo extremely in 55 ~ 70 DEG C to 60 ~ 75 DEG C
The 25 ~ 40% of original volume are to get boiler decoking agent.
A kind of application method of boiler decoking agent：Take boiler decoking agent spray to be heated outer wall in boiler, wait for pot wall it is aqueous
When 5% or less, the other liquid components of coke-removing agent can come into full contact with coal, carry out hot operation, you can.
Auxiliary agent：In mass ratio 4：1：1 takes precipitated calcium carbonate, borax, zeolite mixing to get auxiliary agent.
In mass ratio 1：2：10 take acetone, pyridine, water mixing to get solvent.
Auxiliary material：In 90 DEG C, water intaking in mass ratio 8：1 is added zirconium oxychloride mixing, stirs 30min with 200r/min, is added
The citric acid of the glycerine, 1 times of zirconium oxychloride quality that 2 times of zirconium oxychloride quality is adjusted with the NaOH solution of concentration 0.1mol/L
PH to 6.5,4h is to get adjuvant for heat preservation.
Concentrate rice washing water：In mass ratio 1：10 take rice to carry out rice washing operation in water, obtain rice washing water, take rice washing water by matter
Measure ratio 6：1：1 is added Na2CO3、NaH2PO4Mixing, obtains mixed liquor, is evaporated in vacuo to original volume 20% to get concentration in 60 DEG C
Rice washing liquid.
Initiator：In mass ratio 5：1 takes ammonium persulfate, sodium hydrogensulfite mixing to get initiator.
Starch is plantain starch.
Oil phase is in mass ratio 1：2：5 take rilanit special, span-80, hexamethylene mixing to get oil phase.
The preparation method of combination deashing material, includes the following steps：
（1）In mass ratio 1：5 take zinc powder, 10% acetic acid of mass concentration, under nitrogen protection, with 300r/min wet ball grinding 12h,
Ball milling material is obtained, crystalline flake graphite is taken to be crushed in pulverizer, crosses 120 mesh sieve, takes sieving particle in mass ratio 4：1 is added concentrated nitric acid, in
At 28 DEG C of water-bath, 20min is stirred with 300r/min, filtering moves to 65 DEG C of bakings after taking filter residue to be cleaned with clear water and be neutrality to washing lotion
Case is dried to constant weight, and dried object is obtained, and dried object is taken to be obtained expanded graphite with 800 DEG C of heat treatment 4min in Muffle furnace, taken expansion stone
Ink in mass ratio 4：1：15 are added ball milling material, the ethanol solution that volume fraction is 20% mixes, with 30kHz supersonic oscillations
20min stands 25min at room temperature, centrifuges 5min with 3000r/min, takes centrifugation suspension, is dried in vacuo 10h in 65 DEG C, must answer
Material is closed, it is spare；
（2）In mass ratio 3：1：0.2：15 take acrylamide, 2- acrylamide -2- toluenesulfonic acids, cetyl trimethyl bromine
Change ammonium, water mixing, after stirring 30min with 300r/min, adjusts pH to 6.8 with the NaOH solution of concentration 0.1mol/L, at room temperature
20min is stood, the initiator mixing of acrylamide quality 35% is added, leads to nitrogen protection, closed 10h obtains thickening agent；
（3）In mass ratio 6：1：1：3 take compound material, thickening agent, auxiliary material, concentration rice washing water mixing, are stirred with 350r/min
30min obtains mixed liquor, with 300W microwave treatment 8min, discharges to get combination deashing material.
The preparation of compound combustion-supporting ingredient：According to the mass fraction, 20 parts of starch, 12 parts of oil phases, 3 parts of NaBH are taken4, 10 parts of concentration
The ammonium hydroxide of 0.1mol/L mixes, and stirs 20min with 300r/min, obtains mixed liquid A, in 70 DEG C of water-bath, in mass ratio 1：1：10 take Mg
(NO3)2、K2CO3It is mixed with water, 20min is stirred with 250r/min, mixed liquid B is obtained, takes mixed liquid B in mass ratio 1：5, which are added mixed liquid A, mixes
It closes, ultrasonic wave disperses 10min, at room temperature after still aging 2h, is warming up to 40 DEG C of ageing 2h, filtering takes filter residue in 60 DEG C of baking ovens
Drying is to constant weight to get compound combustion-supporting ingredient.
A kind of boiler decoking agent, according to the mass fraction, including following component：0.2 part of auxiliary agent, 30 parts of solvents, feature exist
In further including：20 parts of combination deashing material, 25 parts of compound combustion-supporting ingredients.
A kind of preparation method of boiler decoking agent, includes the following steps：
（1）According to the mass fraction, 0.2 part of auxiliary agent, 30 parts of solvents, 20 parts of combination deashing material, 25 parts of compound combustion-supporting ingredients are taken；
（2）In 30 DEG C of water-baths, auxiliary agent, solvent, the mixing of combination deashing material are taken, 25min is stirred with 300r/min, is warming up to 60 DEG C,
Compound combustion-supporting ingredient mixing is added, 10min is disperseed with 300W ultrasonic waves, is evaporated in vacuo in 55 DEG C to original volume 25% to get pot
Stove coke-removing agent.
A kind of application method of boiler decoking agent：Take boiler decoking agent spray to be heated outer wall in boiler, wait for pot wall it is aqueous
When 5% or less, the other liquid components of coke-removing agent can come into full contact with coal, carry out hot operation, you can.
Auxiliary agent：In mass ratio 4：2：1 takes precipitated calcium carbonate, borax, zeolite mixing to get auxiliary agent.
In mass ratio 4：2：10 take acetone, pyridine, water mixing to get solvent.
Auxiliary material：In 100 DEG C, water intaking in mass ratio 12：1 is added zirconium oxychloride mixing, stirs 45min with 400r/min, adds
Enter the glycerine of 5 times of zirconium oxychloride quality, the citric acid of 4 times of zirconium oxychloride quality, with the NaOH solution tune of concentration 0.1mol/L
PH to 7.5 is saved, 6h is to get adjuvant for heat preservation.
Concentrate rice washing water：In mass ratio 1：15 take rice to carry out rice washing operation in water, obtain rice washing water, take rice washing water by matter
Measure ratio 8：2：1 is added Na2CO3、NaH2PO4Mixing, obtains mixed liquor, is evaporated in vacuo to original volume 35% to get concentration in 75 DEG C
Rice washing liquid.
Initiator：In mass ratio 5：2 take ammonium persulfate, sodium hydrogensulfite mixing to get initiator.
Starch is cornstarch.
Oil phase is in mass ratio 1：2：8 take rilanit special, span-80, hexamethylene mixing to get oil phase.
The preparation method of combination deashing material, includes the following steps：
（1）In mass ratio 1：8 take zinc powder, 10% acetic acid of mass concentration, under nitrogen protection, with 350r/min wet ball grinding 15h,
Ball milling material is obtained, crystalline flake graphite is taken to be crushed in pulverizer, crosses 120 mesh sieve, takes sieving particle in mass ratio 4：2 are added concentrated nitric acid, in
At 35 DEG C of water-bath, 35min is stirred with 450r/min, filtering moves to 80 DEG C of bakings after taking filter residue to be cleaned with clear water and be neutrality to washing lotion
Case is dried to constant weight, and dried object is obtained, and dried object is taken to be obtained expanded graphite with 900 DEG C of heat treatment 8min in Muffle furnace, taken expansion stone
Ink in mass ratio 4：2：20 are added ball milling material, the ethanol solution that volume fraction is 20% mixes, with 30kHz supersonic oscillations
35min stands 40min at room temperature, centrifuges 10min with 4000r/min, takes centrifugation suspension, is dried in vacuo 15h in 80 DEG C, obtains
Compound material, it is spare；
（2）In mass ratio 5：1：0.2：20 take acrylamide, 2- acrylamide -2- toluenesulfonic acids, cetyl trimethyl bromine
Change ammonium, water mixing, after stirring 45min with 400r/min, adjusts pH to 7.5 with the NaOH solution of concentration 0.1mol/L, at room temperature
35min is stood, the initiator mixing of acrylamide quality 50% is added, leads to nitrogen protection, closed 12h obtains thickening agent；
（3）In mass ratio 6：1：2：3 take compound material, thickening agent, auxiliary material, concentration rice washing water mixing, are stirred with 500r/min
55min obtains mixed liquor, with 300W microwave treatment 12min, discharges to get combination deashing material.
The preparation of compound combustion-supporting ingredient：According to the mass fraction, 35 parts of starch, 18 parts of oil phases, 6 parts of NaBH are taken4, 15 parts of concentration
The ammonium hydroxide of 0.1mol/L mixes, and stirs 35min with 500r/min, obtains mixed liquid A, in 85 DEG C of water-bath, in mass ratio 1：2：15 take Mg
(NO3)2、K2CO3It is mixed with water, 40min is stirred with 400r/min, mixed liquid B is obtained, takes mixed liquid B in mass ratio 2：5, which are added mixed liquid A, mixes
It closes, ultrasonic wave disperses 15min, at room temperature after still aging 5h, is warming up to 60 DEG C of ageing 3h, filtering takes filter residue in 85 DEG C of baking ovens
Drying is to constant weight to get compound combustion-supporting ingredient.
A kind of boiler decoking agent, according to the mass fraction, including following component：0.5 part of auxiliary agent, 50 parts of solvents, feature exist
In further including：40 parts of combination deashing material, 45 parts of compound combustion-supporting ingredients.
A kind of preparation method of boiler decoking agent, includes the following steps：
（1）According to the mass fraction, 0.5 part of auxiliary agent, 50 parts of solvents, 40 parts of combination deashing material, 45 parts of compound combustion-supporting ingredients are taken；
（2）In 45 DEG C of water-baths, auxiliary agent, solvent, the mixing of combination deashing material are taken, 45min is stirred with 500r/min, is warming up to 75 DEG C,
Compound combustion-supporting ingredient mixing is added, 15min is disperseed with 300W ultrasonic waves, is evaporated in vacuo in 70 DEG C to original volume 40% to get pot
Stove coke-removing agent.
A kind of application method of boiler decoking agent：Take boiler decoking agent spray to be heated outer wall in boiler, wait for pot wall it is aqueous
When 5% or less, the other liquid components of coke-removing agent can come into full contact with coal, carry out hot operation, you can.
Auxiliary agent：In mass ratio 4：1：1 takes precipitated calcium carbonate, borax, zeolite mixing to get auxiliary agent.
In mass ratio 3：2：10 take acetone, pyridine, water mixing to get solvent.
Auxiliary material：In 95 DEG C, water intaking in mass ratio 10：1 is added zirconium oxychloride mixing, stirs 37min with 250r/min, is added
The citric acid of the glycerine, 3 times of zirconium oxychloride quality that 3 times of zirconium oxychloride quality is adjusted with the NaOH solution of concentration 0.1mol/L
PH to 7,5h is to get adjuvant for heat preservation.
Concentrate rice washing water：In mass ratio 1：13 take rice to carry out rice washing operation in water, obtain rice washing water, take rice washing water by matter
Measure ratio 7：1：1 is added Na2CO3、NaH2PO4Mixing, obtains mixed liquor, is evaporated in vacuo to original volume 27% to get concentration in 67 DEG C
Rice washing liquid.
Initiator：In mass ratio 5：1 takes ammonium persulfate, sodium hydrogensulfite mixing to get initiator.
Starch is potato starch.
Oil phase is in mass ratio 1：2：6 take rilanit special, span-80, hexamethylene mixing to get oil phase.
The preparation method of combination deashing material, includes the following steps：
（1）In mass ratio 1：6 take zinc powder, 10% acetic acid of mass concentration, under nitrogen protection, with 325r/min wet ball grinding 13h,
Ball milling material is obtained, crystalline flake graphite is taken to be crushed in pulverizer, crosses 120 mesh sieve, takes sieving particle in mass ratio 4：1 is added concentrated nitric acid, in
At 32 DEG C of water-bath, 27min is stirred with 375r/min, filtering moves to 72 DEG C of bakings after taking filter residue to be cleaned with clear water and be neutrality to washing lotion
Case is dried to constant weight, and dried object is obtained, and dried object is taken to be obtained expanded graphite with 850 DEG C of heat treatment 6min in Muffle furnace, taken expansion stone
Ink in mass ratio 4：1：17 are added ball milling material, the ethanol solution that volume fraction is 20% mixes, with 30kHz supersonic oscillations
27min stands 32min at room temperature, centrifuges 7min with 3500r/min, takes centrifugation suspension, is dried in vacuo 13h in 72 DEG C, must answer
Material is closed, it is spare；
（2）In mass ratio 4：1：0.2：17 take acrylamide, 2- acrylamide -2- toluenesulfonic acids, cetyl trimethyl bromine
Change ammonium, water mixing, after stirring 37min with 350r/min, adjusts pH to 7.5 with the NaOH solution of concentration 0.1mol/L, at room temperature
27min is stood, the initiator mixing of acrylamide quality 42% is added, leads to nitrogen protection, closed 11h obtains thickening agent；
（3）In mass ratio 6：1：1：3 take compound material, thickening agent, auxiliary material, concentration rice washing water mixing, are stirred with 420r/min
37min obtains mixed liquor, with 300W microwave treatment 10min, discharges to get combination deashing material.
The preparation of compound combustion-supporting ingredient：According to the mass fraction, 27 parts of starch, 15 parts of oil phases, 5 parts of NaBH are taken4, 13 parts of concentration
The ammonium hydroxide of 0.1mol/L mixes, and stirs 27min with 400r/min, obtains mixed liquid A, in 77 DEG C of water-bath, in mass ratio 1：1：13 take Mg
(NO3)2、K2CO3It is mixed with water, 30min is stirred with 320r/min, mixed liquid B is obtained, takes mixed liquid B in mass ratio 1：5, which are added mixed liquid A, mixes
It closes, ultrasonic wave disperses 13min, at room temperature after still aging 3h, is warming up to 50 DEG C of ageing 2h, filtering takes filter residue in 72 DEG C of baking ovens
Drying is to constant weight to get compound combustion-supporting ingredient.
A kind of boiler decoking agent, according to the mass fraction, including following component：0.3 part of auxiliary agent, 40 parts of solvents, feature exist
In further including：30 parts of combination deashing material, 35 parts of compound combustion-supporting ingredients.
A kind of preparation method of boiler decoking agent, includes the following steps：
（1）According to the mass fraction, 0.3 part of auxiliary agent, 40 parts of solvents, 30 parts of combination deashing material, 35 parts of compound combustion-supporting ingredients are taken；
（2）In 37 DEG C of water-baths, auxiliary agent, solvent, the mixing of combination deashing material are taken, 35min is stirred with 400r/min, is warming up to 67 DEG C,
Compound combustion-supporting ingredient mixing is added, 13min is disperseed with 300W ultrasonic waves, is evaporated in vacuo in 62 DEG C to original volume 32% to get pot
Stove coke-removing agent.
A kind of application method of boiler decoking agent：Take boiler decoking agent spray to be heated outer wall in boiler, wait for pot wall it is aqueous
When 5% or less, the other liquid components of coke-removing agent can come into full contact with coal, carry out hot operation, you can.
Comparative example 1：It is essentially identical with the preparation method of embodiment 1, it has only the difference is that lacking combination deashing material.
Comparative example 2：It is essentially identical with the preparation method of embodiment 1, it has only the difference is that lacking compound combustion-supporting ingredient.
Comparative example 3：The boiler decoking agent of Wuxi City company production.
Isodose is taken to be added to respectively boiler decoking agent obtained by above-described embodiment and the removing ash of boiler coke-removing agent of comparative example
In boiler, the corrosion condition of its deashing rate and boiler is tested, wherein boiler check weighing W1, boiler normal use, at 1200 DEG C
The coke-removing agent of the embodiment of the present invention and comparative example is taken 5 ‰ to spill on boiler, it is small to place two at room temperature by roasting 1 hour, check weighing W2
When, it is then rinsed with sponge under hot water flowing, dries, stress W3, decoking rate is obtained by gravimetric method.Test result is shown in Table 1.
Table 1：
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Ash-cleaning and coke-removing rate % | 97 | 95 | 97 | 80 | 87 | 80~84 |
| Moisture % | 0.6 | 0.8 | 0.8 | 1.1 | 1.1 | 1.4~1.6 |
| Corrosion condition | Without any corrosion | Without any corrosion | Without any corrosion | Without any corrosion | Without any corrosion | Slight erosion |
Note：Ash-cleaning and coke-removing rate=【（W2-W3）/（W2-W1）】×100%
In summary, boiler decoking agent of the invention is more preferable compared to commercial product effect, does not injure boiler service life, is worth
It widelys popularize.
Claims (10)
1. a kind of boiler decoking agent, according to the mass fraction, including following component：0.2 ~ 0.5 part of auxiliary agent, 30 ~ 50 parts of solvents, it is special
Sign is, further includes：20 ~ 40 parts of combination deashing material, 25 ~ 45 parts of compound combustion-supporting ingredients.
2. a kind of boiler decoking agent according to claim 1, which is characterized in that the auxiliary agent：In mass ratio 4：1~2：1 takes gently
Matter calcium carbonate, borax, zeolite mixing are to get auxiliary agent.
3. a kind of boiler decoking agent according to claim 1, which is characterized in that the solvent：In mass ratio 1 ~ 4：2：10 take
Acetone, pyridine, water mixing are to get solvent.
4. a kind of boiler decoking agent according to claim 1, which is characterized in that the preparation method of the combination deashing material, packet
Include following steps：
（1）In mass ratio 1：5 ~ 8 take zinc powder, acetic acid, and under nitrogen protection, wet ball grinding obtains ball milling material, takes crystalline flake graphite in powder
Broken, sieving takes sieving particle in mass ratio 4：1 ~ 2 is added concentrated nitric acid, at 28 ~ 35 DEG C, stirs, and filtering takes filter residue to clean,
It is dry, dried object is obtained, is heat-treated, is obtained expanded graphite, take expanded graphite in mass ratio 4：1~2：15 ~ 20 are added ball milling material, ethyl alcohol
Solution mixes, supersonic oscillations, stands, and centrifugation takes centrifugation suspension, is dried in vacuo, obtains compound material, spare；
（2）In mass ratio 3 ~ 5：1：0.2：15 ~ 20 take acrylamide, 2- acrylamide -2- toluenesulfonic acids, cetyl front three
Base ammonium bromide, water are mixed, and adjust pH, stand, and the initiator mixing of acrylamide quality 35 ~ 50% is added, leads to nitrogen and protects
Shield, closed 10 ~ 12h obtain thickening agent；
（3）In mass ratio 6：1：1~2：3 take compound material, thickening agent, auxiliary material, concentration rice washing water to be mixed, and obtain mixed liquor, microwave
Processing discharges to get combination deashing material.
5. a kind of boiler decoking agent according to claim 4, which is characterized in that the step（2）In initiator：By quality
Than 5：1 ~ 2 takes ammonium persulfate, sodium hydrogensulfite mixing to get initiator.
6. a kind of boiler decoking agent according to claim 4, which is characterized in that the step（3）In auxiliary material：In 90 ~ 100
DEG C, water intaking in mass ratio 8 ~ 12：1, which is added zirconium oxychloride, is mixed, and glycerine, the oxygen chlorine of 2 ~ 5 times of zirconium oxychloride quality is added
Change the citric acid of 1 ~ 4 times of zirconium quality, adjust pH, keeps the temperature to get adjuvant.
7. a kind of boiler decoking agent according to claim 4, which is characterized in that the step（3）In concentration rice washing water：It presses
Mass ratio 1：10 ~ 15 take rice to carry out rice washing operation in water, obtain rice washing water, take rice washing water in mass ratio 6 ~ 8：1~2：1 is added
Na2CO3、NaH2PO4Mixing obtains mixed liquor, is evaporated in vacuo to the 20 ~ 35% of original volume to get concentration rice washing liquid.
8. a kind of boiler decoking agent according to claim 1, which is characterized in that the preparation of the compound combustion-supporting ingredient：By matter
Number meter is measured, 20 ~ 35 parts of starch, 12 ~ 18 parts of oil phases, 3 ~ 6 parts of NaBH are taken4, 10 ~ 15 parts of ammonium hydroxide be mixed, obtain mixed liquid A, in
70 ~ 85 DEG C, in mass ratio 1：1~2：10 ~ 15 take Mg (NO3)2、K2CO3It is mixed with water, obtains mixed liquid B, take mixed liquid B by quality
Than 1 ~ 2：5 are added mixed liquid A mixing, and ultrasonic wave dispersion is stored at room temperature ageing, and heating ageing filters, takes filter residue and drying to get multiple
Close combustion-supporting ingredient.
9. a kind of boiler decoking agent according to claim 8, which is characterized in that the starch be plantain starch, cornstarch,
Any one in potato starch.
10. a kind of boiler decoking agent according to claim 8, which is characterized in that the oil phase is in mass ratio 1：2：5 ~ 8 take
Rilanit special, span-80, hexamethylene mixing are to get oil phase.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337170A (en) * | 2011-07-30 | 2012-02-01 | 湖南晟通科技集团有限公司 | Boiler clinker removal agent |
| CN108102761A (en) * | 2017-12-23 | 2018-06-01 | 雷笑天 | A kind of preparation method of boiler fired coal coal-saving synergist |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337170A (en) * | 2011-07-30 | 2012-02-01 | 湖南晟通科技集团有限公司 | Boiler clinker removal agent |
| CN108102761A (en) * | 2017-12-23 | 2018-06-01 | 雷笑天 | A kind of preparation method of boiler fired coal coal-saving synergist |
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