CN100552007C - Boiler chromium-base slag-removing ash-cleaning energy saving composition and preparation technology thereof - Google Patents
Boiler chromium-base slag-removing ash-cleaning energy saving composition and preparation technology thereof Download PDFInfo
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- CN100552007C CN100552007C CNB2005100960740A CN200510096074A CN100552007C CN 100552007 C CN100552007 C CN 100552007C CN B2005100960740 A CNB2005100960740 A CN B2005100960740A CN 200510096074 A CN200510096074 A CN 200510096074A CN 100552007 C CN100552007 C CN 100552007C
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Abstract
The present invention relates to a kind of decoking, anti-scorch and deashing auxiliary agent that is applicable to large, medium and small coal dust boiler with dry bottom furnaces such as electric power, chemical industry, oil, thermoelectricity, especially a kind of boiler chromium-base slag-removing ash-cleaning energy saving agent and preparation technology thereof.It is made by parts by weight of crushed to the 40～100 purpose particles of following component: 6～20 parts of chromic trioxides, 6～12 parts of chrome green, 6～25 parts of cupric chlorides, 6～12 parts in copper sulfate, 8～20 parts of Sodium Tetraboratees, 5～15 parts in Calcium Fluoride (Fluorspan), 4～10 parts of zinc nitrates, 10～30 parts of vermiculites, 20～50 parts in aluminium hydroxide, 3～7 parts in pigment carbon, 3～7 parts of aluminium sesquioxides; This energy-saving agent does not have corrosion to boiler, can effectively remove slagging scorification in the boiler, coking and dust stratification, has only very little dross in the burner hearth, and light weight, frangible, easily come off; Energy-saving and cost-reducing, effectively improve the boiler combustion environment, eliminate boiler safety hidden danger, need not shutdown maintenance, Power Plant does not need sootblower, reduces investment.The boiler of particularly suitable burning inferior coal, brown coal, low-volatile coal.
Description
Technical field
The present invention relates to a kind of decoking, anti-scorch and deashing auxiliary agent that is applicable to large, medium and small coal dust boiler with dry bottom furnaces such as electric power, chemical industry, oil, thermoelectricity, especially a kind of boiler chromium-base slag-removing ash-cleaning energy saving agent the invention still further relates to the preparation technology of boiler chromium-base slag-removing ash-cleaning energy saving agent.
Fast development along with industry, electricity needs constantly increases, because the coal-fired nature difference in various places is big for China's region coal irrational distribution in addition, cause coal firing boiler high-temperature surface water-cooled tube wall, coner firing device slagging scorification, superheater system dust stratification on every side, these slagging scorification, dust stratification are greatly endangering the normal safety and economic operation of boiler, and main harm is as follows:
(1) dust stratification and slagging scorification will reduce the heat-transfer capability of stove internal heating surface; The thermal conductivity that is deposited on slagging scorification on the heating surface and dust stratification layer is very low, and thermal resistance is very big, makes water wall its heat-transfer capability after staining a few hours generally will descend 30%～60%, causes moving behind the furnace flame center, and furnace outlet gas temperature raises.Reduced the thermo-efficiency of boiler.
(2) owing to the dust stratification and the slagging scorification of stove internal heating surface, the corresponding rising of furnace outlet gas temperature makes flying dust be bonded in easily on screen formula and the convection superheater, causes the high temperature bond dust stratification and the corrosion of superheater, stops up exhaust gases passes, causes heat transfer deterioration.
(3) the low temperature dust stratification will cause the obstruction of economizer and air preheater and the remarkable decline of heat-transfer effect, thereby funnel temperature raising, the thermosteresis of boiler are risen, and reduce the economy of boiler operatiopn.
(4) because the total heat transfer resistance increase of boiler surface, boiler possibly can't maintain at full capacity and move under the operating mode, have to increase Coal-fired capacity, cause that furnace outlet gas temperature further raises, make flying dust be more prone to be bonded on the heating surface, cause vicious cycle, cause a series of boiler breakdowns, as superheater and the stifled ash of economizer tube bank, heat transfer deterioration and booster, air preheater leaks out in a large number, and slag-tapping system stops up malfunctioning.
(5) because furnace outlet gas temperature raises, cause overheating steam temperature higher, the high temperature superheater heating surface forms local overheating, thereby causes metal strength to reduce and the generation pipe explosion accident.
(6) dust stratification layer or the slag that is bonded on water wall or the high temperature superheater has stronger corrodibility, can complicated chemical reaction take place with the tube wall metal under the effect of high-temperature flue gas, forms high temperature corrosion.When high temperature corrosion took place, the average corrosion rate of water wall tube can reach 0.8～2.6mm/.If use high sulphur coal, corrosion region is subjected to directly washing away of high-temperature flue gas, and its corrosion speed can reach more than the 5mm/.As seen, the high temperature corrosion meeting makes water wall or high temperature superheater metal pipe-wall generation strong corrosion, causes the tube wall attenuate that booster blowing out accident takes place even.Therefore, heating surface stain with slagging scorification be the omen that high temperature corrosion takes place.
Boiler surface since the financial loss that dust stratification and slagging scorification can cause mainly contain:
(1) raising of furnace outlet gas temperature and funnel temperature will reduce exerting oneself of boiler and efficient, and according to the data at home and abroad statistics, therefore the boiler average efficiency can reduce by 1%～2%, and has increased coal consumption;
(2) because slagging scorification and dust stratification increase the total heat transfer resistance of boiler surface, boiler can only underrun, boiler even can only under 40% load, move when slagging scorification is serious, and often be forced to blowing out;
(3) dust stratification and slagging scorification bring hidden danger for the safe operation of boiler, need shutdown maintenance in case of necessity, because of few generating brings financial loss, have statistical information to show, the every blowing out of 500MW unit will be lost more than 100,000 dollars in one day;
(4) need to arrange the sootblower of sufficient amount, tens at least, tens of at most, significantly increased the investment cost of unit, in addition, also need to increase a large amount of recondition expenses, as scarfing cinder, change required expense such as heating surface pipe.
In sum, the slagging scorification of boiler and dust stratification bring many serious harms to the normal safety and economic operation of boiler.The nineties Xian Thermal Power Engineering Research Institute was reported the chemical constitution prescription about several deslagging agents of potassium sodium base of record in " research of China's station boiler deslagging agent and application and station boiler deslagging agent service condition investigation report " and was last century:
| Title | LCZ type deslagging agent | CH type deslagging agent | KD type dust-cleaning agent | YS swallow pine board dust-cleaning agent |
| Chemical constitution | NaCl Na 2CO 3 Zn Fe 3O 4 SiO 2 Na 2B 4O 7·10H 2O | KNO 3 | KNO 3 S C SiO 2 | KNO 3 SiO 2C (agraphitic carbon) |
Use investigation for above-mentioned four kinds of deslagging agents and dust-cleaning agent shows, their slagging-off DeGrain,
Because contain water-soluble potassium sodium salt class in the deslagging agent, the seamless steel tube for boiler material had bigger corrosive nature.
Summary of the invention
The boiler chromium-base slag-removing ash-cleaning energy saving agent and the preparation technology thereof that the object of the present invention is to provide a kind of pulverized coal firing boiler to use, this energy-saving agent does not have corrosion to boiler, can effectively remove slagging scorification in the boiler, coking and dust stratification, energy-saving and cost-reducing, effectively improve the boiler combustion environment, be specially adapted to the burning situation of low-volatile, high ash content, middle lower heating value coal.
The technical scheme that realizes the object of the invention is as follows: a kind of chromium-base slag-removing ash-cleaning energy saving composition, form by following component and parts by weight:
Chromic trioxide CrO
36～20 parts
Chrome green Cr
2O
36～12 parts
Cupric chloride CuCl
26～25 parts
Copper sulfate CuSO
46～12 parts
Sodium Tetraborate Na
2B
4O
710H
28～20 parts of O
Calcium Fluoride (Fluorspan) CaF
25～15 parts
Zinc nitrate Zn (NO
3)
24～10 parts
Vermiculite (MgFe)
3(A
1S
1)
4O10 (OH)
210～30 parts
Aluminium hydroxide A1 (OH)
320～50 parts
3～7 parts of pigment carbon C
Aluminium sesquioxide Al
2O
33～7 parts
The formula optimization weight proportion scope of preparation chromium-base slag-removing ash-cleaning energy saving composition is:
Chromic trioxide CrO
311～17 parts
Chrome green Cr
2O
38～10 parts
Cupric chloride CuCl
210～20 parts
Copper sulfate CuSO
48～10 parts
Sodium Tetraborate Na
2B
4O
710H
211～18 parts of O
Calcium Fluoride (Fluorspan) CaF
28～12 parts
Zinc nitrate Zn (NO
3)
25～8 parts
Vermiculite (MgFe)
3(A
1S
1)
4O10 (OH)
215～25 parts
Aluminium hydroxide Al (OH)
330～40 parts
4～6 parts of pigment carbon C
Aluminium sesquioxide Al
2O
34～6 parts
The preparation technology who above-mentioned compositions in weight portion is made the present composition comprises the steps:
1, chromic trioxide, chrome green, cupric chloride, copper sulfate, Calcium Fluoride (Fluorspan), vermiculite, aluminium hydroxide, pigment carbon, aluminium sesquioxide are weighed by weight and mixed; Carry out fragmentation with shredder again and cross screen sizing; Wherein 100 order fineness account for 60～70%, 80 order fineness account for 10～20%, 50 order fineness account for 20～30%, and then with three kinds of classification compositions synthetic first powder that makes that stirs;
2, zinc nitrate, Sodium Tetraborate are weighed to mix by weight pulverize 50 mesh sieves, make second powder;
3, will make first powder and second powder mixes, and stir and promptly make the chromium-base slag-removing ash-cleaning energy saving agent.
Chromium-base slag-removing ash-cleaning energy saving composition of the present invention, its outward appearance are light green yellow powder shape, and particle size diameter 80～100 orders account for 80%, contain moisture≤3%, and bulk specific gravity is 1.02-1.10g/cm
3, addition is ten thousand of raw coal amount/two five to 3/10000ths, addition means is with charging machine the present invention evenly to be added in coal conveyer belt or the coal supply scraper plate machine.
Compared with prior art, the present invention makes the burning situation of easy coking coal be able to good improvement, and furnace water cooling tube wall, coner firing device and combustion are with old burnt body to come off in day totally at 3-5, newly-generated slag body automatic cycle comes off, its slag body is loose porous, and the crystal form type is obvious, and is very frangible.Remove the gred anti-scorch performance and energy conservation and consumption reduction effects far above American-European deslagging agent.
The mechanism of action of the present invention is to improve coal ash fusion temperature, ash viscosity rapidly; It is crystal form type slag structure by the structural transformation of existing heterogeneous body vitreous state type that the chromium material impels the slagging scorification structure, impels fine and close hard burnt body bud into pore shape, light weight, loose frangible, brittle aggregate; Cinder hardness is reduced greatly, can come off automatically.Boiler chromium-base slag-removing ash-cleaning energy saving composition of the present invention is in the chemistry fission of burner hearth high temperature (〉=1300 ℃), the heavy metal chromium ion that adds constantly interacts with components of coal ash mesosilicic acid salt, aluminosilicate in burner hearth, promptly induces generation high temperature mineral spinel group network down at nucleus; Its molten solubility temperature is between 1380～1440 ℃, and when neoplastic high temperature mineral group network flies to the burner hearth tube wall, they solidify or partly solidify, and can not form the slag body of vitreous state again; When newborn high temperature mineral group network constantly forms, make and bear particle SiO
2Middle metathetical Sauerstoffatom constantly generates, and Sauerstoffatom constantly produces new heat energy material under hot conditions, become incendiary material, can make the burner hearth core temperature improve 80～140 ℃, has unusual effect for energy-saving and cost-reducing synergy, and coal saving rate is between 6～12%.With power plant's year consumption is example for coal-fired 1,000,000 tons, uses can economize on coal ten thousand tons of 7-10 of this product, per tonly presses 300 yuan of calculating, can reduce expenses 2100～3,000 ten thousand yuan, and input-output ratio is 1: 5～8.
The effect and the mechanism of main ingredient of the present invention are as described below:
Boiler chromium-base slag-removing ash-cleaning energy saving agent of the present invention, start with from the ash content fusing point that improves the low ash smelting point coal, solve the very little material of viscosity and adhere to and give the furnace heating surface wall with refractory lining, refracto, cause the burnt body of vitreous state and thermo-efficiency is descended, make vitreous state type slag change crystal form type slag into.This mechanism is started with from the following aspect and is finished the conversion whole process:
Because Cr, Cu, Zn particle can impel the generation of newborn mineral (crystal form) colony rapidly, make them become the nucleus of picotite family mineral, the Fe in the easy coking coal of this nucleus ionic absorption high ferro composition
+ 2Thereby ion becomes the homogeneity class of high temperature mineral family resembles the iron level that reduces in the ature of coal, makes ash fusion point, and ash viscosity is improved.
By Calcium Fluoride (Fluorspan) CaF
2Become to assign to overcome deficiency and the negative ion (F that replenishes the low easy coking coal of calcium high ferro calcium
2) become strong fugitive constituent and in the burnt body of fluidised form, generate vesicular structure.
Zinc nitrate Zn (NO
3)
2Being strong oxidizer, being used for making not fully combusting component secondary combustion, is energy-conservation main batching.Part zinc is become be zink sulphide.
By vermiculite (MgFe)
3(A
1S
1)
4O10 (OH)
2Composition generates pore in higher temperatures cinder body, make the cinder body become loose shape, and intensity weakens greatly;
Aluminium hydroxide, aluminium sesquioxide are as the base-material of chromium agent product.The most of silicate higher temperatures mineral that participate in of active aluminum particulate react.
Sodium Tetraborate Na
2B
4O
710H
2O mainly plays the strong incendiary effect of secondary in low-temperature flue gas, the dust concentration that exceeds standard is reduced.
Pigment carbon is the smoothing agent of the chromatin of chromium agent product and boiler overheating pipe, flue, plays smooth and easy effect.
Mechanism reaction process: after the present invention mixes coal dust, enter the burner hearth burning, they promptly are decomposed into Cr, Cu, Zn heavy metal particles at 450～900 ℃, when the Mn that runs into ash component, Mg, Fe composition, promptly in the mode of homogeneity class elephant, generate a large amount of newborn mineral groups: hercynite family and ishkulite, zink sulphide etc.Make like this that easily the coking material was destroyed, newborn high (ash) fusing point mineral are taken as the leading factor, the time former viscosity number improve 10-30 doubly; Catch when vermiculite is glued by new constituent, its volatilization that promptly is decomposed in aggregate causes fine and close vesicular structure and keeps.
The present invention carries out the experiment of the high temperature corrosion effect of 12CrIMoV stainless steel and 20# steel boiler through Xi'an thermal technology institute, and the result shows and is shown as blank value.Effluent of the present invention south Jin Guan Utilities Electric Co., Ltd., only son mountain heat power plant of petro-chemical corporation, company of Jiaozhuo coal industry (group) limited liability electric power branch office, etc. relevant unit on boilers such as 65t/h, 220t/h, SG440t/h, test, test and use, have rapid raising ash viscosity and ash fusion point, the effect that slagging scorification is changed to crystal form type slag by vitreous state type slag, effect is remarkable; Funnel temperature is reduced to the design load scope from 180～190 ℃ of severe overweight.
There are two SG440t/h coal dust boiler with dry bottom furnaces in Henan Jin Guan Utilities Electric Co., Ltd., owing to use the higher coal of iron-holder for a long time, cause furnace heating surface water-cooled tube wall, wall with refractory lining, refracto, the serious coking on every side of coner firing device, particularly top, combustion zone fluidised form cinder is very serious, thickness is at 40-50 centimetre, the thickness reaches more than 80 centimetres, and furnace outlet gas temperature, main steam temperature raise unusually, and serious coking can't normally move boiler; The present invention is at this two machine effect test that removes the gred, used about five days, burner hearth four angular flux attitude cinder big area come off, the old cinder of water-cooled tube wall, wall with refractory lining, refracto 40-80 centimetre all comes off automatically, and there are not new stream Jiao, the generation of slag body, furnace outlet gas temperature obviously reduces, and has solved the unusual hidden danger that raises and brought of main steam temperature, makes the at full capacity normal safety and economic operation of boiler.
Got rid of water-soluble potassium, the sodium salt that adopts in the existing deslagging agent because of the present invention, boiler steel there is not corrosive nature, life-time service plays stabilization to normal operation, the running at full capacity of boiler, eliminate boiler safety hidden danger, need not shutdown maintenance, Power Plant does not need sootblower, reduces investment, and overall economic efficiency is very considerable.Have only very little dross in the burner hearth, and light weight, frangible, easily come off.The present invention is suitable for all kinds of coals, the boiler of particularly suitable burning inferior coal, brown coal, low-volatile coal.
Embodiment
Below in conjunction with embodiment content of the present invention is described further:
Embodiment 1 takes by weighing raw material by following component and weight:
Chromic trioxide CrO
36kg
Chrome green Cr
2O
38kg
Cupric chloride CuCl
222kg
Copper sulfate CuSO
48kg
Sodium Tetraborate Na
2B
4O
710H
2O 20kg
Calcium Fluoride (Fluorspan) CaF
210kg
Zinc nitrate Zn (NO
3)
27kg
Vermiculite (MgFe)
3(A
1S
3)
4O10 (OH)
229kg
Aluminium hydroxide Al (OH)
338kg
Pigment carbon C 3kg
Aluminium sesquioxide Al
2O
36kg
By following step that above-mentioned weight proportion is as follows to the technology of feedstock production finished product:
1, will mix by chromic trioxide, chrome green, cupric chloride, copper sulfate, Calcium Fluoride (Fluorspan), vermiculite, aluminium hydroxide, pigment carbon, the aluminium sesquioxide that said ratio weight is weighed; Carry out fragmentation with grinding machine again and cross screen sizing; Wherein 100 order fineness account for 70%, 80 order fineness account for 10%, 50 order fineness account for 20%, and then with three kinds of classification compositions synthetic first powder that makes that stirs;
2, will mix by zinc nitrate, the Sodium Tetraborate that said ratio weight is weighed and pulverize 50 mesh sieves, make second powder;
3, will make first powder and second powder mixes, and stir and promptly make the chromium-base slag-removing ash-cleaning energy saving agent.
Embodiment 2 takes by weighing raw material by following component and weight:
Chromic trioxide CrO
315kg
Chrome green Cr
2O
39kg
Cupric chloride CuCl
216kg
Copper sulfate CuSO
49kg
Sodium Tetraborate Na
2B
4O
710H
2O 15kg
Calcium Fluoride (Fluorspan) CaF
210kg
Zinc nitrate Zn (NO
3)
26kg
Vermiculite (MgFe)
3(A
1S
1)
4O10 (OH)
220kg
Aluminium hydroxide Al (OH)
335kg
Pigment carbon C 5kg
Aluminium sesquioxide Al
2O
37kg
Preparation technology: chromic trioxide, chrome green, cupric chloride, copper sulfate, Calcium Fluoride (Fluorspan), vermiculite, aluminium hydroxide, pigment carbon, aluminium sesquioxide weighed by said ratio weight to mix; Carry out fragmentation with shredder again and cross screen sizing; Wherein 100 order fineness account for 60%, 80 fineness account for 20%, 50 order fineness account for 20%, and then with three kinds of classification compositions synthetic first powder that makes that stirs; All the other methods are identical with embodiment 1.
Embodiment 3 takes by weighing raw material by following component and weight:
Chromic trioxide CrO
320kg
Chrome green Cr
2O
310kg
Cupric chloride CuCl
216kg
Copper sulfate CuSO
412kg
Sodium Tetraborate Na
2B
4O
710H
2O 8kg
Calcium Fluoride (Fluorspan) CaF
215kg
Zinc nitrate Zn (NO
3)
225kg
Vermiculite (MgFe)
3(A
1S
1)
4O10 (OH)
215kg
Aluminium hydroxide Al (OH)
335kg
Pigment carbon C 7kg
Aluminium sesquioxide Al
2O
33kg
Preparation technology: chromic trioxide, chrome green, cupric chloride, copper sulfate, Calcium Fluoride (Fluorspan), vermiculite, aluminium hydroxide, pigment carbon, aluminium sesquioxide weighed by said ratio weight to mix; Carry out fragmentation with shredder again and cross screen sizing; Wherein 100 order fineness account for 65%, 80 order fineness account for 15%, 50 order fineness account for 20%, and then with three kinds of classification compositions synthetic first powder that makes that stirs; All the other methods are identical with embodiment 1.
Embodiment 4 takes by weighing raw material by following proportioning:
Chromic trioxide CrO
315kg
Chrome green Cr
2O
36kg
Cupric chloride CuCl
216kg
Copper sulfate CuSO
412kg
Sodium Tetraborate Na
2B
4O
710H
2O 8kg
Calcium Fluoride (Fluorspan) CaF
215kg
Zinc nitrate Zn (NO
3)
25kg
Vermiculite (MgFe)
3(A
1S
1)
4O10 (OH)
220kg
Aluminium hydroxide Al (OH)
35kg
Pigment carbon C 7kg
Aluminium sesquioxide Al
2O
35kg
Preparation technology: chromic trioxide, chrome green, cupric chloride, copper sulfate, Calcium Fluoride (Fluorspan), vermiculite, aluminium hydroxide, pigment carbon, aluminium sesquioxide weighed by said ratio weight to mix; Carry out fragmentation with shredder again and cross screen sizing; Wherein 100 order fineness account for 70%, 80 order fineness account for 10%, 50 order fineness account for 20%, and then with three kinds of classification compositions synthetic first powder that makes that stirs; All the other methods are identical with embodiment 1.
Embodiment 5 takes by weighing raw material by following component and weight:
Chromic trioxide CrO
312kg
Chrome green Cr
2O
38kg
Cupric chloride CuCl
215kg
Copper sulfate CuSO
48kg
Sodium Tetraborate Na
2B
4O
710H
2O 12kg
Calcium Fluoride (Fluorspan) CaF
210kg
Zinc nitrate Zn (NO
3)
28kg
Vermiculite (MgFe)
3(A
1S
1)
4O10 (OH)
222kg
Aluminium hydroxide Al (OH)
320kg
Pigment carbon C 7kg
Aluminium sesquioxide Al
2O
34kg
Preparation technology: chromic trioxide, chrome green, cupric chloride, copper sulfate, Calcium Fluoride (Fluorspan), vermiculite, aluminium hydroxide, pigment carbon, aluminium sesquioxide weighed by said ratio weight to mix; Carry out fragmentation with shredder again and cross screen sizing; Wherein 100 order fineness account for 60%, 80 order fineness account for 10%, 50 order fineness account for 30%, and then with three kinds of classification compositions synthetic first powder that makes that stirs; All the other methods are identical with embodiment 1.
Embodiment 6 takes by weighing raw material by following component and weight:
Chromic trioxide CrO
312kg
Chrome green Cr
2O
38kg
Cupric chloride CuCl
215kg
Copper sulfate CuSO
48kg
Sodium Tetraborate Na
2B
4O
710H
2O 12kg
Calcium Fluoride (Fluorspan) CaF
210kg
Zinc nitrate Zn (NO
3)
27kg
Vermiculite (MgFe)
3(A
1S
1)
4O10 (OH)
222kg
Aluminium hydroxide Al (OH)
338kg
Pigment carbon C 6kg
Aluminium sesquioxide Al
2O
34kg
Preparation technology: chromic trioxide, chrome green, cupric chloride, copper sulfate, Calcium Fluoride (Fluorspan), vermiculite, aluminium hydroxide, pigment carbon, aluminium sesquioxide weighed by said ratio weight to mix; Carry out fragmentation with shredder again and cross screen sizing; Wherein 100 order fineness account for 60%, 80 order fineness account for 15%, 50 order fineness account for 25%, and then with three kinds of classification compositions synthetic first powder that makes that stirs; All the other methods are identical with embodiment 1.
Claims (3)
1, a kind of chromium-base slag-removing ash-cleaning energy saving composition is characterized in that: it is made up of following component and parts by weight: 6～20 parts of chromic trioxides, chrome green Cr
2O
36～12 parts, 6～25 parts of cupric chlorides, 6～12 parts in copper sulfate, Sodium Tetraborate Na
2B
4O
710H
28～20 parts of O, 5～15 parts in Calcium Fluoride (Fluorspan), 4～10 parts of zinc nitrates, 10～30 parts of vermiculites, 20～50 parts in aluminium hydroxide, 3～7 parts in pigment carbon, 3～7 parts of aluminium sesquioxides.
2, a kind of chromium-base slag-removing ash-cleaning energy saving composition according to claim 1, it is characterized in that: the parts by weight of described component are: 11～17 parts of chromic trioxides, chrome green Cr
2O
38～10 parts, 10～20 parts of cupric chlorides, 8～10 parts in copper sulfate, Sodium Tetraborate Na
2B
4O
710H
211～18 parts of O, 8～12 parts in Calcium Fluoride (Fluorspan), 5～8 parts of zinc nitrates, 15～25 parts of vermiculites, 30～40 parts in aluminium hydroxide, 4～6 parts in pigment carbon, 4～6 parts of aluminium sesquioxides.
3, the preparation technology of chromium-base slag-removing ash-cleaning energy saving composition as claimed in claim 1 or 2 is characterized in that, comprises the steps:
(1) with chromic trioxide, chrome green Cr
2O
3, cupric chloride, copper sulfate, Calcium Fluoride (Fluorspan), vermiculite, aluminium hydroxide, pigment carbon, aluminium sesquioxide weigh by weight and mix; Carry out fragmentation with shredder again and cross screen sizing; Wherein 10～20%, the 50 order fineness that account for weight of 60～70%, the 80 order fineness that account for weight of 100 order fineness account for 20～30% of weight, and then with three kinds of classification compositions synthetic first powder that makes that stirs;
(2) with zinc nitrate, Sodium Tetraborate Na
2B
4O
710H
2O weighs by weight to mix and pulverized 50 mesh sieves, makes second powder;
(3) will make first powder and second powder mixes, and stir and promptly make the chromium-base slag-removing ash-cleaning energy saving agent.
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| CN102337169B (en) * | 2010-07-16 | 2013-07-03 | 甘肃黑马石化工程有限公司 | Multicomponent slag-removing and ash-cleaning energy saving composition for boilers and preparation technology thereof |
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| CN104910996B (en) * | 2015-05-29 | 2018-01-09 | 甘肃黑马石化工程有限公司 | Boiler chromium-base slag-removing ash-cleaning coal-saving agent composition and preparation method thereof |
| CN104910995B (en) * | 2015-05-29 | 2018-01-09 | 刘音希 | Boiler chromium-base slag-removing coal-saving agent composition and preparation method thereof |
| CN111351370A (en) * | 2018-12-20 | 2020-06-30 | 汉能新材料科技有限公司 | Method for cleaning furnace slag |
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2005
- 2005-09-20 CN CNB2005100960740A patent/CN100552007C/en not_active Expired - Fee Related
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