CN104910996B - Boiler chromium-base slag-removing ash-cleaning coal-saving agent composition and preparation method thereof - Google Patents
Boiler chromium-base slag-removing ash-cleaning coal-saving agent composition and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of additive product used suitable for electric power, thermoelectricity, oil, chemical industry and metallurgy industry coal-burning boiler, specifically a kind of boiler chromium-base slag-removing ash-cleaning coal-saving agent composition, it is made up of the raw material of following portions by weight：0.1~0.3 part of 50~65 parts of chrome green, 8~15 parts of cupric oxide, 5~9 parts of cerium oxide, 5~9 parts of barium molybdate, 7~14 parts of cobalt oxide, 12~17 parts of potassium permanganate, 10~16 parts of manganese carbonate, 12~17 parts of barium carbonate, 8~15 parts of titanium dioxide, 15~20 parts of zinc oxide, 6~10 parts of potassium chlorate, 6~10 parts of potassium hyperchlorate, 20~28 parts of sodium carbonate, 25~35 parts of active attapulgite carclazyte and alkyl glyceryl ether sulfonate.Efficient combustion-supporting of the present invention, coal saving rate are high, reduce pollution, improve efficiency of combustion, the environment-friendly products of prolonged boiler service life；It is easy to use, stable performance, without reforming equipment, need to only be added into fuel and participate in burning.
Description
Technical field
The present invention relates to a kind of addition used suitable for industry coal-burning boilers such as electric power, thermoelectricity, oil, chemical industry and metallurgy
Agent product, the boiler chromium-base slag-removing ash-cleaning coal-saving agent composition that specifically a kind of coal-burning boiler uses, the invention further relates to
The preparation method of boiler chromium-base slag-removing ash-cleaning coal-saving agent composition.
Background technology
Due to China region coal irrational distribution, fire coal nature difference in various regions is big in addition, causes coal-burning boiler high-temperature heating
Slagging and superheater system dust stratification around face water cooling tube wall, coner firing device, these slagging, dust stratification high risks boiler
Normal safety and economic operation, main harm are as follows：
(1) dust stratification and slagging will reduce the heat transfer efficiency of stove internal heating surface, the slagging being deposited on heating surface and dust stratification layer
Thermal conductivity factor very little, only heated metal face 1/400, thermal resistance is very big so that water-cooling wall occur stain a few hours after its
Heat-transfer capability will typically decline 30%~60%, be moved after causing furnace flame center, furnace outlet gas temperature rise, reduce boiler
The thermal efficiency.
(2) slagging, the coking of heating surface of coal-fired boiler are serious, can finally cause boiler shutdown, it is necessary to artificial coke cleaning.Manually
Coke cleaning will not only have enough down time, and burn and scald accident often occurs, and be brought to safety in production serious hidden
Suffer from, simultaneously as down time is grown, influence whole follow up device production, larger economic loss is brought to enterprise.
(3) the dust stratification layer or slag being bonded on boiler water wall or high temperature superheater have stronger corrosivity, in height
Complicated chemical reaction can occur with tube wall metal in the presence of warm flue gas, form high temperature corrosion.As research experiment shows, sulphur exists
It is easy to directly react generation ferrous sulfate with carbon steel at 350~400 DEG C, forms high temperature corrosion；Such as up to more than 450 DEG C, its is right
The destruction of boiler tube is even more serious, and ferric sulfate is in the acid and easy moisture absorption, and after blowing out cooling, it starts moisture absorption deliquescence, by
Hot face forms the corrosive environment of highly acid, causes boiler heating surface stoppage phase to be encroached on by diluted acid corrosion.Generation high temperature corrosion
When, the average corrosion rate of water screen tube is up to 0.8~2.6mm ∕.If burning high sulfur coal, corrosion region will be by high-temperature flue gas
Directly wash away, its corrosion rate is up to more than 5mm ∕.It can be seen that high temperature corrosion can make water-cooling wall or high temperature superheater metal tube
Strong corrosion occurs for wall, causes trommel that booster blowing out accident even occurs.Therefore, heating surface occurs to stain and slagging is
The omen of high temperature corrosion occurs.
(4) slagging due to stove internal heating surface and dust stratification, furnace outlet gas temperature are accordingly raised so that flying dust is easily bonded in
In screen formula and convection superheater, cause elevated temperature cohesiveness dust stratification and the corrosion of superheater, block exhaust gases passes, cause heat transfer to be disliked
Change.Coking and slagging causes coal combustion in boiler incomplete, CO, SO in flue dust2Equal size rises, and seriously pollutes environment.
(5) low temperature dust stratification being remarkably decreased the blocking for causing economizer and air preheater and heat-transfer effect, so that
The exhaust gas temperature of boiler improves, heat loss rises, and reduces the economy of boiler operatiopn.Coking reduces flue gas actual internal area,
Flow resistance increases, and burner hearth malleation is significantly raised.On the one hand, the power consumption of blower fan is made increase；On the other hand, pressure-fired is caused to transport
OK, smoke spillage aggravates, and has a strong impact on the normal operation of boiler；Meanwhile environmental pollution is caused, influence to keep the safety in production.
(6) because the total heat transfer resistance increase of boiler heating surface, boiler may be unable to maintain that and be run under operating mode at full capacity,
Coal-fired capacity have to be increased, cause furnace outlet gas temperature further to raise so that flying dust is more prone to be bonded on heating surface, causes
Vicious circle, cause a series of boiler breakdowns, such as superheater and economizer tube bank stifled ash, heat transfer deterioration and booster, air preheat
Device largely leaks out, and slag-tapping system blocks failure.
(7) because furnace outlet gas temperature raises, cause superheater temperature higher, high temperature superheater heating surface forms local super
Temperature, pipe explosion accident occurs so as to cause metal strength to reduce.
Boiler heating surface due to dust stratification and slagging can caused by economic loss mainly have：
(1) raising of furnace outlet gas temperature and exhaust gas temperature will reduce the output and efficiency of boiler, be united according to data at home and abroad
Result is counted, therefore boiler average efficiency can reduce by 1%~2%, and increase coal consumption；
(2) due to slagging and dust stratification make boiler heating surface it is total heat transfer resistance increase, boiler can only underrun, slagging
Boiler can only even be run under 50% load when serious, and be often forced to blowing out；
(3) dust stratification and slagging bring hidden danger to the safe operation of boiler, need shutdown maintenance if necessary, the band because of few generating
Carry out economic loss, there is statistics to show, a 500MW unit will lose more than 100,000 dollars in one day per blowing out；
(4) need to arrange sufficient amount of soot blower, more than ten at least, at most tens of, significantly increase the throwing of unit
Rate are used；Used in addition it is also necessary to increase the substantial amounts of cost of overhaul, such as the expense needed for scarfing cinder, replacing heating surface pipe etc..
The content of the invention
It is an object of the invention to provide the boiler chromium-base slag-removing ash-cleaning coal-saving agent composition that a kind of coal-burning boiler uses, sheet
Another purpose of invention is the preparation method for providing boiler chromium-base slag-removing ash-cleaning coal-saving agent composition.Pot provided by the invention
Stove chromium-base slag-removing ash-cleaning coal-saving agent composition is corrosion-free to boiler, can effectively remove slagging, coking and dust stratification in boiler, reduces
The activation energy of coal-fired oxidation reaction, the oxidation rate of coal is improved, make coal-fired fully burning, improve boiler combustion environment, it is especially suitable
For low volatile, the burning situation of high grey, middle low heating value coal.
Realize that the technical scheme of the object of the invention is as follows：A kind of boiler chromium-base slag-removing ash-cleaning coal-saving agent composition, by following
The raw material of parts by weight is made：Chrome green Cr2O350~65 parts, 8~15 parts of cupric oxide CuO, cerium oxide CeO2 5~
9 parts, barium molybdate BaMoO4 5~9 parts, 7~14 parts of cobalt oxide CoO, potassium permanganate KMnO4 12~17 parts, manganese carbonate
MnCO3 10~16 parts, barium carbonate BaCO3 12~17 parts, titanium dioxide TiO2 8~15 parts, 15~20 parts of zinc oxide ZnO,
Potassium chlorate KClO3 6~10 parts, potassium hyperchlorate KClO4 6~10 parts, sodium carbonate Na2CO3 20~28 parts, active attapulgite it is white
0.1~0.3 part of 25~35 parts of soil and alkyl glyceryl ether sulfonate.
The raw material of above-mentioned parts by weight is prepared into the method for boiler chromium-base slag-removing ash-cleaning coal-saving agent composition including following
Step：
1st, the chrome green, cupric oxide, cerium oxide of above-mentioned parts by weight are well mixed with barium molybdate, then use grinder
Carry out crushing 80 mesh sieves, the first powder is made；
2nd, the active attapulgite carclazyte of above-mentioned parts by weight is crossed after 20 mesh sieves and is added to the first powder, remix stirring 30
Minute to uniform, that is, the second powder is made；
3rd, by the cobalt oxide of above-mentioned parts by weight, potassium permanganate, manganese carbonate, barium carbonate, titanium dioxide, zinc oxide, chloric acid
Potassium, potassium hyperchlorate, sodium carbonate and alkyl glyceryl ether sulfonate are well mixed, and crushed 40 mesh sieves, and the 3rd powder is made；
4th, the second powder by made from and the 3rd powder mix, and stir and produce boiler chromium-base slag-removing ash-cleaning coal-saving agent group
Compound.
Boiler chromium-base slag-removing ash-cleaning coal-saving agent composition provided by the invention, its outward appearance are light green yellow powder, granularity
The mesh of diameter 20~80, moisture≤6%, bulk density are 1.01~1.14g/cm3.In use, addition is boiler raw coal amount
3/10000ths or so, adding method is uniformly to be added product of the present invention in coal conveyer belt or in coal scrapper conveyor with charger.
The raw materials used component main function of the present invention and mechanism are as described below：
1st, chrome green：Cr2O3Chromium ion in boiler furnace in CuO/CeO2/BaMoO4The work of composite catalyst
Under, constantly interacted with the silicate in components of coal ash, aluminosilicate, sulphate of iron, high temperature is generated under nucleus induction
Mineral chromium system spinel group's network, makes cinder be changed into crystal habit cinder body from the cinder body of glassy state, removing that can be rapidly and efficiently
Cinder in boiler.Trivalent chromic ion can substitute poisonous and hazardous hexavalent chromium, chromium trioxide CrO completely3Cr VI from
Son is poisonous and harmful to skin and respiratory apparatus and damages.And chrome green Cr2O3And its it is nontoxic that hydrate, which can contemplate,
（With reference to《Chromium compounds produces and application》The 39th chapter chromium salt production in safe practice and labour protection, P334 pages）.Hair
For a person of good sense by commerical test and constantly research, it is more more preferable than chromic anhybride except cinder and deashing are imitated that chrome green is entirely capable of acquirement
Fruit.
2nd, cupric oxide, cerium oxide, barium molybdate：Cupric oxide, cerium oxide and barium molybdate are used as composite catalyst in the present invention,
They can increase the activity of fire coal, strengthen combustion burning of coal, play strong combustion-supporting, slagging-off, desulfurization and the effect of economizing on coal.Add
After catalyst is compound, the lattice of carbon is set to be distorted change, carbon-metal complex compound easily spins off from lattice, the work of carbon
Property just improves.Coal-fired traditional combustion system is to be contacted by coal surface with oxygen, meets fire burning.This poorly efficient burning side
Formula, in addition to the loss for causing free charcoal, also the combustible constituent in the coal cinder of part is set to be wasted.
3rd, potassium permanganate, potassium chlorate, potassium hyperchlorate, cobalt oxide, zinc oxide, titanium dioxide：Potassium permanganate, potassium chlorate, height
Potassium chlorate, cobalt oxide, zinc oxide, titanium dioxide are used as oxidant in the present invention, can decomposite oxygen under the high temperature conditions,
Promote coal-fired fully burning.Make fired coal combustion not exclusively and by wind because coal particle easily causes ischaemia in combustion
Take away to form coal smoke, or contain carbon granules in flyash, it is easier coal smoke or coal caused by ischaemia to layer combustion
Grain is sandwiched in clinker, so as to cause the waste of coal and atmosphere pollution, to overcome the incomplete it is necessary to increasing its reaction of coal combustion
Speed, add oxidant and then reach this purpose.Therefore we add solid oxidizer in the compositions of the present invention, play increasing
Oxygen is acted on, the situation of ischaemia when changing coal combustion, and heat is concentrated, and contributes to the further burning of coal, and then play and carry
High burning of coal rate, reduce and arranged outside coal grain, reduce atmosphere pollution and coal-fired waste.
4th, manganese carbonate, barium carbonate, sodium carbonate：Manganese carbonate, barium carbonate, sodium carbonate are used as leavening agent and combustion-supporting in the present invention
Agent, after being heated in boiler, microexplosion can be produced, present composition product is preferably mixed and is penetrated into fire coal, increase fire
Flame density and height, so as to reach vibrating type burning, accelerate thermal energy exchange.They make charcoal particle with carbon monoxide in high-temperature region wink
Between be converted into carbon dioxide and water, reach safety fully burning.Meanwhile make that breeze quality is loose, lightens, so as to being effectively improved or
This burnt significant technology issues of stove caudal knot are eliminated, and have the function that to remove collecting ash, reaction activity is reduced, makes reaction
It is more easy to carry out, makes fired coal combustion more complete, reaches cigarette, deashing and depositing dust effect, beneficial to environmental protection.
5th, active attapulgite carclazyte：Active attapulgite carclazyte is the carrier and adsorbent of catalyst, can be equal by catalyst
Even absorption is distributed to micropore and the surface of active attapulgite, makes to increase specific surface area after catalyst is scattered, improves catalyst
Activity and effect.It effectively can adsorb table water in fire coal in combustion adjuvant, and water is stabilizer, and it can make combustion adjuvant
Used time effectively cools, and combustion adjuvant is only just reflected oxygen when fired coal combustion needs most oxygenation, avoids combustion adjuvant and shift to an earlier date
Temperature reaction goes out oxygen, improves combustion-supporting effect.
6th, alkyl glyceryl ether sulfonate：Alkyl glyceryl ether sulfonate can ooze within the time of 10~30 minutes from coal surface
Coal cinder is arrived thoroughly, can soon be disperseed between the particle of coal, coal-burning particle is mutually adsorbed, add new burning point, expand
Coal-fired combustion zone.
Cr is applied in the compositions of the present invention2O3With the CuO/CeO of mutually auxiliary application2/BaMoO4Under the conditions of composite catalyst,
With nontoxic Cr2O3It instead of poisonous and hazardous CrO3Chromium base main material.Compared with prior art, chromium ion is in high temperature by the present invention
The most active polyvalent metal ion of subordinate, can quickly form mineral spinelle group's network using chromium ion as nucleus, other metals from
Son can not be in contrast.But Cr3+There is no Cr6+Vivaciously, therefore to select adaptable catalyst mutually to aid in, can just make Cr3+Ion is lived
Bold and vigorous property reaches Cr6+The activity of ion.Boiler furnace fire coal Cr in combustion2O3Cr3+In preferable CuO/CeO2/
BaMoO4In the presence of composite catalyst, constantly with the phase interaction such as the silicate in components of coal ash, aluminosilicate, sulphate of iron
With i.e. Cr2O3Cr3+Under the nucleus induction of formation, generation high temperature chromium system mineral spinelle group's network, its melting temperature is 1390
Between~1450 DEG C, when high temperature mineral group's network of new life flies to burner hearth tube wall, they have solidified or half solidifies, and will not form glass again
The cinder body of glass body, cinder is changed into crystalline state cinder body from glassy state body, enable the burning situation of boiler coke coal good
Good to improve, burnt body departed from totally in 3~5 days always for water-cooling wall pipe of burner hearth, coner firing device and wall with refractory lining, refracto, newly-generated cinder body
Automated periodic comes off, and its cinder body is loose porous, and crystalline state type is obvious, low intensity, loose frangible in ramentum shape.This hair
Bright composition passes through the application test on 220t/h, 480t/h and 680t/h Industrial Boiler, it was demonstrated that its stable performance, except cinder and
Deashing and economize on coal more apparent.
Boiler chromium-base slag-removing ash-cleaning energy saving agent of the present invention, start with from the ash content for improving low ash smelting point coal, solve viscosity very
Small material is attached to furnace heating surface wall with refractory lining, refracto, causes the technical problem of glassy state cinder body and boiler thermal output decline.Make
With the present composition, the glassy state formed coke slag in boiler can be made to be changed into crystalline state formed coke slag.Due to the Cu in this composition,
The particle such as Ce, Mn, Ba, Co, Zn and Mo energy and Cr3+The rapid generation for promoting neogenic mineral crystallization colony, make these transitional gold
Belong to the nucleus of ion and active metal ion to chromium ion generation corresponding spinelle race mineral.This nucleus Ions Absorption baking coal
High-sulfur, the iron ion in high ferrous components and the sulphion of kind also turn into the material of high temperature mineral race, so as to reduce the sulphur in coal
Content and iron content, it is improved ash fusion point and ash viscosity.Meanwhile also have larger effect to solid sulphur and desulfurization, substantially reduce
SO in flue gas2Concentration, be advantageous to environmental protection.Due to quickly forming for cinder body, combustion conditions are taken a turn for the better, and flying dust is reduced, boiler
Just substantially reduced containing ash content in tail gas, exhaust gas temperature declines therewith, and heat waste declines, and the thermal efficiency rises, and has saved fire coal.
The slagging-off of product of the present invention, deashing, burning aid coal saving mechanism are：Boiler chromium-base slag-removing ash-cleaning coal-saving agent is urged by special type
Agent, oxidant, combustion adjuvant, emulsifying agent, dispersant, corrosion inhibiter composition, through with fire coal blend after with the table aqueous phase knot in fire coal
Close, in the presence of class component is permeated, catalyst permeates scattered, scattered especially in a large amount of spaces of coal cinder, energy in coal
Ensure that catalyst contacts with coal surfaces externally and internally to a greater extent, play the catalytic action of product to greatest extent.When the present invention produces
Product are spiked into fire coal, with contained various chemical compositions by coal hole rapid osmotic, be adsorbed onto inside fire coal；When fire coal enters
After entering combustion chamber, the various chemical compositions contained by product of the present invention play a part of catalytic activity carrier, reduce the on fire of coal
Point temperature, enhances the redox reaction of fire coal, oxidant progressively discharges virning activity oxygen in different temperatures section, with coal
In combustible combine, reduce reaction activity, promote burning, improve operating mode and reduce pollutant emission.Due to the present invention
Product uses the active attapulgite carclazyte complex carrier of meso-hole structure, and chrome green and cerium oxide rare earth element can be made to increase work
Property specific surface area, can quickly allow combustion Macromolecule in coal carbochain to crack, while hydrogen original is provided using inherent moisture in coal-fired
Son, flash hydrogcnation process is completed, produce the hydrocarbon of more low molecule amount or small-molecular-weight, increase coal-fired hydrogen content,
Lower heat value improves more than 5%；Again due to the rise of flame temperature and height and the expansion of combustion zone, it is strong to add burning
Degree and density, increase the heat transfer area of heat exchange, improve heat exchanger effectiveness, so as to improve the output of boiler and efficiency,
The purpose economized on coal with reaching.
The present composition is according to setting by extraordinary catalyst, oxidant, emulsifying agent, dispersant, corrosion inhibiter and bleeding agent
The ratio of meter is process through science compounding.Boiler fire coal with addition combustion-supporting property metal oxide in combustion, its
Transition metal can be activated, and its own electronics can occur to shift and turn into electronq donor, provide the material after electronics
Hole is formed, when directly being contacted with carbon, the electronic structure of carbon surface can be made to change, it is more in combustion process so as to accelerate
The progress of individual reaction, improve the efficiency of combustion of fire coal.According to the reaction mechanism of boiler fired coal combustion, added in fire coal a small amount of
Slag-removing ash-cleaning and the component such as combustion-supporting, by being catalyzed, aoxidizing, the effect such as the exchange of metal ion, improve the oxidation rate of coal, make
Fire coal has been saved in coal-fired fully burning.
The quality of ature of coal directly affects the situation of burning, and the present composition adds on the premise of combustion apparatus is not changed
Enter when being burnt in coal, the ignition point of fire coal can be reduced, decompose generate a variety of stronger oxidants and catalyst step by step, and in improving
Flame and the unburnt state of middle flame, while substantial amounts of oxygen is discharged, the combustible in fire coal is fully burnt, the intensity of a fire is violent, fire
Flame is high, grate length, plays strong combustion-supporting effect, promotes the reaction of combustion carbon content in coal and carbide；Can be by not combustion completely in flue gas
The carbon monoxide of burning is converted into carbon dioxide, discharges substantial amounts of heat, improves the efficiency of combustion of fire coal, has reached combustion-supporting mesh
's.The present composition is a kind of efficient combustion-supporting, coal saving rate is high, reduces pollution, improves efficiency of combustion, prolonged boiler service life
Environment-friendly products；It is easy to use, stable performance, without big input, without reforming equipment, need to only be added into fuel together
Participate in burning.
The innovative point of product of the present invention essentially consists in：
1st, the active attapulgite carclazyte that meso-hole structure is added in the present composition does carrier, can make chrome green, oxygen
Change copper, cerium oxide and barium molybdate rare earth element increase specific surface area active, combustion Macromolecule in coal carbochain can be allowed to be sent out in high temperature
Raw cracking, while hydrogen atom is provided using inherent moisture in fire coal, flash hydrogcnation process is completed, produces more low molecule amount or small
The methane hydrocarbon of molecular weight, increases coal-fired hydrogen content, and Lower heat value improves more than 5%.
2nd, the present composition is by extraordinary emulsifying agent, bleeding agent, alkaline matter（Sodium carbonate）With the salt of transition metal（Carbonic acid
Copper, zinc sulfate, zinc nitrate）And oxide（Manganese oxide, zinc oxide, cupric oxide, chrome green）Composition, can reduce fire coal and catch fire
Point and the volatile matter content for improving fire coal, the efficiency of combustion of fire coal is improved, saves fire coal 5%~12%.
3rd, the core technology of the present composition is selection and Cr2O3 The CuO/CeO of cooperative effect can be played2/BaMoO4It is multiple
Close catalyst, so that it may with nontoxic Cr2O3 It instead of poisonous and hazardous CrO3 , make Cr3+It equally can reach Cr6+Activity.
Cr2O3 Under the conditions environmental of composite catalyst, with the silicate in components of coal ash, aluminosilicate, sulphate of iron and k-na salt
Interaction, generates high temperature mineral chromium system spinel group's network, cinder is changed into crystal habit cinder body from glassy state body, with regard to energy
It is quick to remove and prevent to generate the cinder in boiler.
Boiler chromium-base slag-removing ash-cleaning coal-saving agent provided by the invention is peaceful in Zhong You Lanzhou Petrochemical Companies chemical fertilizer factory, middle oil respectively
The enterprises such as summer petro-chemical corporation power houses, middle oily Dushanzi petrochemical industry branch company, dynamics factory of Jinchuan Group Co., Ltd are answered
With experiment and popularization and application time more than 3 years.Practice gained main efficacy results are described below：
1st, Zhong You Lanzhou Petrochemical Companies chemical fertilizer factory power houses A, B boiler is 145t/h high pressure coal-powder boilers, and fire coal uses kiln street
Coal, the coal ash part is larger, and sulfur is high, and in January, 2012 because coking is serious, starts to try out the sheet that my company provides from March, 2012
Inventive composition, scarfing cinder so far, decoking, effect of coal saving are notable, and burner hearth does not produce slagging, coking, while phosphorus content is big in flue gas
It is big to reduce, blackness of the exhaust is reduced by 1 lingemann grade, save raw coal more than 5%, boiler operating parameter is substantially optimized.
2nd, Zhong You Ningxia Petrochemicals company power houses 200t/h high-pressure boilers are before slag-cleaning agent is added, superheater slagging, coking
Seriously, and exhaust gases passes at the superheater of part are plugged, flue gas circulation area is seriously reduced, back-end ductwork negative pressure significantly on
Rise, combustion chamber draft can not maintain, and cause blowing out twice, carry out large-scale artificial coke cleaning to superheater, and boiler operatiopn can only be with
Underload less than 180t/h maintains the production of full factory reluctantly.My company was begun to use to provide from 21 days March in 2012 for this
The present composition, added in fire coal the present composition after 42 hours each negative pressure value of boiler back end ductwork have it is obvious under
Drop trend, and the artificial coke cleaning work of per tour more than 2 times is stopped, burner hearth coking is substantially thinned, and cinder is porous.Due to saving
Coal device inlet flue gas temperature and exhaust gas temperature have different degrees of decline, have reached scope of design and requirement, make the actual thermal effect of boiler
Rate is improved.
3rd, steam power plant of middle oily Dushanzi petrochemical industry branch company is equipped with 220t/h × 6 coal dust boiler with dry bottom furnace, carry for
The vital task of oil refining, ethene and the power supply of other commercial power, steam supply and heating, because of coal-fired more complicated used in it, category high ferro, height
Calcium and low ash smelting point coal, and coal varitation is larger, it is big that this results in boiler furnace heating surface water-cooling wall in heavy-duty service
Area coking, focus layer constantly thickeies and formed " Jiao Qiang " in glutinous state, especially prominent around coner firing device, causes thermal conductivity factor to drop
Low, exhaust gas temperature and unit consumption of steaming are higher.Deteriorate though the use of soot blower plays the role of certain burner hearth coking that suppresses, frequently
Using erosion or thermal stress can be caused to corrode to boiler tube wall, cause trommel, become fragile, so as to reduce service life, burner hearth
The coking of heating surface seriously governs the safe and highly efficient operation of boiler.Use operation stove heating surface water cooling during the present composition
Generated around tube wall and coner firing device without fluidised form Jiao, only a little floating ash, is to touch to fall with slag rod between tube wall；Above main burning area
Tube wall is high-visible, and clinker shows as evacuating that porous, matter is crisp frangible, and alleviating frequent soot blowing operation makes boiler tube wall be thinned and become
Crisp harm, boiler items service data normal table, is finally completed coal saving rate 5.45%.
4th, the existing installation of dynamics factory of Jinchuan Group Co., Ltd is 65t/h × 6 and 480t/h × 2 coal dust dry ash extraction
Boiler, the fire coal because used in changes greatly and design reasons, causes boiler furnace heating surface water-cooling wall, coner firing in high load capacity
Coking is serious around device, operations staff's long-run adjustment treatment effect unobvious, drastically influence the safe operation of boiler.Running
After the boiler addition present composition, in boiler high load capacity（Rate of load condensate more than 90%）, it is not bright around boiler coner firing device
Aobvious glassy state coking, main burning area water-cooling wall is high-visible, and burnt also mechanical slag form, furnace bottom cinder are hung even if with the presence of a small amount of
Light, loose before agent frangible, more occur than applying with dust stratification.By examination on probation, coal saving rate 5.12%, dreg removing system is from the production
The latter fortune of delivering directly of product addition is normal, greatly alleviates safe operation problem during boiler high load capacity.
Embodiment
Embodiment 1, raw material is weighed by following components and weight：Chrome green 50kg, cupric oxide 8kg, cerium oxide 9kg,
Barium molybdate 9kg, cobalt oxide 10kg, potassium permanganate 13kg, manganese carbonate 10kg, barium carbonate 12kg, titanium dioxide 10kg, zinc oxide
19kg, potassium chlorate 10kg, potassium hyperchlorate 10kg, sodium carbonate 25kg, active attapulgite 33kg and alkyl glyceryl ether sulfonate
0.1kg.The raw material of above-mentioned parts by weight is prepared into boiler chromium-base slag-removing ash-cleaning coal-saving agent composition by the following method：
1st, chrome green 50kg, cupric oxide 8kg, cerium oxide 9kg are well mixed with barium molybdate 9kg, entered with grinder
Row crushed 80 mesh sieves, and the first powder is made；
2nd, active attapulgite carclazyte 33kg is crossed into 20 mesh sieves, is added to the first powder and remixes stirring 30 minutes to uniform,
The second powder is made；
3rd, by cobalt oxide 10kg, potassium permanganate 13kg, manganese carbonate 10kg, barium carbonate 12kg, titanium dioxide 10kg, zinc oxide
19kg, potassium chlorate 10kg, potassium hyperchlorate 10kg, sodium carbonate 25kg and alkyl glyceryl ether sulfonate 0.1kg are well mixed, and crushed
40 mesh sieves, the 3rd powder is made；
4th, the second powder by made from and the 3rd powder mix, and stir and boiler chromium-base slag-removing ash-cleaning coal-saving agent group is made
Compound.
Embodiment 2, raw material is weighed by following components and weight：Chrome green 65kg, cupric oxide 15kg, cerium oxide 7kg,
Barium molybdate 8kg, cobalt oxide 7kg, potassium permanganate 12kg, manganese carbonate 15kg, barium carbonate 14kg, titanium dioxide 15kg, zinc oxide
20kg, potassium chlorate 7kg, potassium hyperchlorate 8kg, sodium carbonate 22kg, active attapulgite 26kg and alkyl glyceryl ether sulfonate
0.2kg.The raw material of above-mentioned parts by weight is prepared into the method for boiler chromium-base slag-removing ash-cleaning coal-saving agent composition with embodiment 1.
Embodiment 3, raw material is weighed by following components and weight：Chrome green 60kg, cupric oxide 13kg, cerium oxide 8kg,
Barium molybdate 6kg, cobalt oxide 14kg, potassium permanganate 17kg, manganese carbonate 13kg, barium carbonate 15kg, titanium dioxide 8kg, zinc oxide
15kg, potassium chlorate 8kg, potassium hyperchlorate 9kg, sodium carbonate 20kg, active attapulgite 25kg and alkyl glyceryl ether sulfonate
0.3kg.The raw material of above-mentioned parts by weight is prepared into the method for boiler chromium-base slag-removing ash-cleaning coal-saving agent composition with embodiment 1.
Embodiment 4, raw material is weighed by following components and weight：Chrome green 63kg, cupric oxide 10kg, cerium oxide 5kg,
Barium molybdate 5kg, cobalt oxide 12kg, potassium permanganate 15kg, manganese carbonate 16kg, barium carbonate 17kg, titanium dioxide 9kg, zinc oxide
17kg, potassium chlorate 6kg, potassium hyperchlorate 7kg, sodium carbonate 27kg, active attapulgite 28kg and alkyl glyceryl ether sulfonate
0.1kg.The raw material of above-mentioned parts by weight is prepared into the method for boiler chromium-base slag-removing ash-cleaning coal-saving agent composition with embodiment 1.
Embodiment 5, raw material is weighed by following components and weight：Chrome green 52kg, cupric oxide 12kg, cerium oxide 6kg,
Barium molybdate 7kg, cobalt oxide 9kg, potassium permanganate 14kg, manganese carbonate 11kg, barium carbonate 16kg, titanium dioxide 14kg, zinc oxide
18kg, potassium chlorate 9kg, potassium hyperchlorate 6kg, sodium carbonate 28kg, active attapulgite 35kg and alkyl glyceryl ether sulfonate
0.3kg.The raw material of above-mentioned parts by weight is prepared into the method for boiler chromium-base slag-removing ash-cleaning coal-saving agent composition with embodiment 1.
Claims (2)
1. a kind of boiler chromium-base slag-removing ash-cleaning coal-saving agent composition, is made up of the raw material of following portions by weight：Chrome green
Cr2O350~65 parts, 8~15 parts of cupric oxide CuO, cerium oxide CeO2 5~9 parts, barium molybdate BaMoO4 5~9 parts, cobalt oxide
7~14 parts of CoO, potassium permanganate KMnO4 12~17 parts, manganese carbonate MnCO3 10~16 parts, barium carbonate BaCO3 12~17
Part, titanium dioxide TiO2 8~15 parts, 15~20 parts of zinc oxide ZnO, potassium chlorate KClO3 6~10 parts, potassium hyperchlorate
KClO4 6~10 parts, sodium carbonate Na2CO3 20~28 parts, 25~35 parts of active attapulgite carclazyte and alkyl glyceryl ether sulfonate
0.1~0.3 part.
2. preparing the method for the boiler chromium-base slag-removing ash-cleaning coal-saving agent composition described in claim 1, comprise the steps：
1st, the chrome green, cupric oxide, cerium oxide of above-mentioned parts by weight are well mixed with barium molybdate, then carried out with grinder
80 mesh sieves were crushed, the first powder is made；
2nd, the active attapulgite carclazyte of above-mentioned parts by weight is crossed after 20 mesh sieves and is added to the first powder, remix stirring 30 minutes
To uniform, i.e., obtained second powder；
3rd, by the cobalt oxide of above-mentioned parts by weight, potassium permanganate, manganese carbonate, barium carbonate, titanium dioxide, zinc oxide, potassium chlorate, height
Potassium chlorate, sodium carbonate and alkyl glyceryl ether sulfonate are well mixed, and crushed 40 mesh sieves, and the 3rd powder is made；
4th, the second powder by made from and the 3rd powder mix, and stir and produce the combination of boiler chromium-base slag-removing ash-cleaning coal-saving agent
Thing.
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