CN104696947A - Method for recycling of fuel coal catalyst of chain-grate boiler - Google Patents
Method for recycling of fuel coal catalyst of chain-grate boiler Download PDFInfo
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- CN104696947A CN104696947A CN201510082516.XA CN201510082516A CN104696947A CN 104696947 A CN104696947 A CN 104696947A CN 201510082516 A CN201510082516 A CN 201510082516A CN 104696947 A CN104696947 A CN 104696947A
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Abstract
The invention relates to a method for recycling of a fuel coal catalyst of a chain-grate boiler. The method comprises the steps of coating the outer surface of coal with a coating agent solution, then performing catalyst loading, immersing the coal ash into water after the coal loaded with a catalyst is burnt, and finally filtering and recycling mixed liquor, so as to obtain the catalyst which can be used repeatedly. The method has the benefits that the liquid catalyst is sufficiently utilized, the catalytic combustion effect of a fixed bed fuel coal boiler is greatly improved, the catalyst recovery and recycling rates are correspondingly increased, the efficiency of the fuel coal boiler is further improved, the catalyst cost is reduced, and meanwhile the dust emission during the combustion process is greatly reduced.
Description
Technical field
The invention belongs to coal field of combustion technology, be specifically related to a kind of chain furnace coal combustion catalyst circulation utilization method.
Background technology
Chain furnace is a kind of grate furnace, in stove, burning of coal completes in movement, but chain furnace grate firing process is actual belongs to grate-firing, due to mode chain furnace combustion stable conditions, the thermal efficiency is higher, operation is convenient, labour intensity is low, smoke dust discharge concentration is lower, therefore chain furnace is industrially widely used, there are nearly 500,000 chain of stations bar ovens in current China, and its quantity is with the speed increase of annual 7% ~ 8%.
Because chain furnace coal charge granularity used is at the block material of 8cm ~ 12cm, coal seam thickness is at 5cm ~ 8cm, combustion process air used is only blown into bottom fire grate, therefore mode chain furnace combustion temperature can be caused lower, general at 850 DEG C ~ 950 DEG C, coal burning efficiency is generally 75% ~ 85%, and the coefficient of excess air of chain furnace is little, temperature is low, causes that burning is insufficient, coal ash carbon content is higher, CO content is more in tail gas.
At present, people adopt coal catalytic combustion technology, and to improve burn rate and the efficiency of combustion of coal charge in chain furnace, coal catalytic combustion technology can reduce burning-point, improve coal-fired speed, even if under the condition of low oxygen concentration, coal charge also can keep good efficiency of combustion.
On engineer applied, Catalytic Combustion Effect depend on catalyst and coal particle contact effect and whether can high efficiente callback, therefore different mode of loadings, can directly affect Load Balanced and tight ness rating, and then cause burn rate and efficiency of combustion, in addition, can catalyticing combustion process catalyst reclaim, organic efficiency can be improved, also the control of catalyticing combustion process is depended on, and cocatalyst kind and addition manner, for precious metal catalyst, because catalyst is expensive, therefore recovery process is a lot, and for coal combustion catalyst because requirement is larger, and catalyst mostly is various alkali metal compound, wherein sylvite is exactly typical catalyst, but sylvite price is higher, to various burner hearth, there is corrosiveness simultaneously, therefore sylvite recycle particularly important, catalyst is reclaimed, not only reduce coal catalytic combustion cost, more catalytic effect can be improved, reduce catalyst to the corrosiveness of burner hearth.
Also some are had in recent years for the open source literature of coal catalytic combustion technology, such as application number is the patent of invention of 201410251387.8, disclose a kind of catalyst recovery and carrying method, described method is owing to being fluid bed or entrained flow gasification, therefore need catalyst and coal dust load tight, and gasification of coal powder particles is less, the preheating carrying out uniform temperature is also needed fixedly to be contacted with coal dust by catalyst; Application number is 201210123360.1 patents of invention, discloses a kind of Chain type fire coal boiler solid oxidant, and for the combustion process of chain furnace, its mode of loading directly mixes with fire coal, and catalyst cannot reclaim; Application number is the patent of invention of 201410393340.5, disclose a kind of method utilizing the metallurgical solid waste of calcium base to reduce mode chain furnace combustion sulfur dioxide (SO2) emissions, it utilizes the synergy of metallurgical solid waste and coal combustion catalyst, achieve the discharge capacity reducing sulfur dioxide, but do not relate to the round-robin method of catalyst.
Summary of the invention
In order to solve the problems referred to above that prior art exists, the invention provides a kind of chain furnace coal combustion catalyst circulation utilization method.
The technical solution adopted in the present invention is:
A kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: mixed with water by covering, be mixed with the covering solution that mass concentration is 5% ~ 50%, mixed by catalyst with water, be mixed with the catalyst solution that mass concentration is 0.01% ~ 1%, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 1% ~ 15%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 1% ~ 20%, and the quality of used catalyst solution and the mass percent of coal charge are 0.01% ~ 3%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 800 ~ 1200 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.01% ~ 1% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
As a further improvement on the present invention, its operating procedure is as follows:
A, solution preparation: mixed with water by covering, be mixed with the covering solution that mass concentration is 10% ~ 30%, mixed by catalyst with water, be mixed with the catalyst solution that mass concentration is 0.05% ~ 0.8%, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge by the mode of spraying or flood, obtains coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 10% ~ 15%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 10% ~ 15%, and the quality of used catalyst solution and the mass percent of coal charge are 0.05% ~ 1%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 800 ~ 1000 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.05% ~ 0.8% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
As a further improvement on the present invention, described covering is alkaline earth metal compound.Comprise Ca (OH)
2, CaO, CaCO
3, Mg (OH)
2, MgO, MgCO
3deng.Be preferably Ca (OH)
2, CaO, CaCO
3.
As a further improvement on the present invention, described catalyst is alkali-soluble alkali or alkali-soluble salt.Comprise KOH, NaOH, K
2cO
3, Na
2cO
3, KMnO
4, KNO
3, NaNO
3, K
2feO
4, sodium methoxide, sodium acetate, sylvite and the sodium salt such as potassium acetate, preferred KOH, NaOH, K
2cO
3, Na
2cO
3.
Beneficial effect of the present invention is: a kind of chain furnace coal combustion catalyst circulation utilization method of the present invention, covering is utilized to carry out load, catalyst is better reclaimed, prevent catalyst and minerals in coal from reacting, carry out atomization and spray into catalyst is entered stove process at coal charge again, achieve the load of catalyst, when fire coal burns at grate-firing device, due to the control of ignition temperature and air velocity, catalyst still with free state load in coal ash, then coal ash is directly entered in wastewater disposal basin, catalyst is dissolved in waste water thereupon, when catalyst concn in wastewater disposal basin reaches catalyst cupport concentration, after filtering, again liquid catalyst atomization is loaded on as-fired coal material, realize recycling of catalyst.Maximum feature of the present invention takes full advantage of liquid catalyst, increase substantially fixed bed coal-burning boiler Catalytic Combustion Effect, recovery and the rate that recycles of catalyst are also correspondingly improved, and improve efficiency, the reduction catalyst cost of coal-burning boiler, greatly reduce the dust emission of combustion process simultaneously.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention;
Fig. 2 is process flow diagram of the present invention.
In figure: 1, coal bunker; 2, coal particle; 3, atomization of liquid spray gun; 4, chain furnace fire grate; 5, catalyst recovery pond; 6, the pump housing; 7, filtering and concentrating equipment; 8, catalyst solution storage tank; 9, coal dust tube sheet conveying equipment; 10, make-up catalyst solution line.
Detailed description of the invention
Embodiment 1
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: by Ca (OH)
2mix with water, be mixed with the Ca (OH) that mass concentration is 15%
2solution is covering solution, is mixed by KOH with water, be mixed with mass concentration be 0.05% KOH solution be catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 12%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 14%, and the quality of used catalyst solution and the mass percent of coal charge are 0.1%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 800 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.05% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 10%, mode chain furnace combustion efficiency improves 8%, catalyst recovery yield reaches more than 77%, burning dust reduces 7%, tail gas sulphur dioxide declines 30% to utilize the present embodiment to realize.
Embodiment 2
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: MgO is mixed with water, be mixed with mass concentration be 20% MgO solution be covering solution, NaOH is mixed with water, be mixed with mass concentration be 0.05% NaOH solution be catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 7%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 20%, and the quality of used catalyst solution and the mass percent of coal charge are 0.08%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 1000 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.05% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 13%, mode chain furnace combustion efficiency improves 8%, catalyst recovery yield reaches more than 71%, burning dust reduces 6%, tail gas sulphur dioxide declines 12% to utilize the present embodiment to realize.
Embodiment 3
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: CaO is mixed with water, be mixed with mass concentration be 20% CaO solution be covering solution, by K
2cO
3mix with water, be mixed with the K that mass concentration is 0.08%
2cO
3solution is catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 10%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 20%, and the quality of used catalyst solution and the mass percent of coal charge are 0.09%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 1000 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.08% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 13%, mode chain furnace combustion efficiency improves 9%, catalyst recovery yield reaches more than 84%, burning dust reduces 7%, tail gas sulphur dioxide declines 23% to utilize the present embodiment to realize.
Embodiment 4
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: by Ca (OH)
2mix with water, be mixed with the Ca (OH) that mass concentration is 15%
2solution is covering solution, by Na
2cO
3mix with water, be mixed with the Na that mass concentration is 0.06%
2cO
3solution is catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 11%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 18%, and the quality of used catalyst solution and the mass percent of coal charge are 0.07%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 1200 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.06% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 10%, mode chain furnace combustion efficiency improves 8%, catalyst recovery yield reaches more than 81%, burning dust reduces 6%, tail gas sulphur dioxide declines 18% to utilize the present embodiment to realize.
Embodiment 5
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: by CaCO
3mix with water, be mixed with the CaCO that mass concentration is 20%
3solution is covering solution, is mixed by KOH with water, be mixed with mass concentration be 0.03% KOH solution be catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 12%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 20%, and the quality of used catalyst solution and the mass percent of coal charge are 0.2%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 900 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.03% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 9%, mode chain furnace combustion efficiency improves 7%, catalyst recovery yield reaches more than 78%, burning dust reduces 6%, tail gas sulphur dioxide declines 21% to utilize the present embodiment to realize.
Embodiment 6
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: CaO is mixed with water, be mixed with mass concentration be 30% CaO solution be covering solution, NaOH is mixed with water, be mixed with mass concentration be 0.06% NaOH solution be catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 15%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 25%, and the quality of used catalyst solution and the mass percent of coal charge are 0.09%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 1000 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.06% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 14%, mode chain furnace combustion efficiency improves 8%, catalyst recovery yield reaches more than 85%, burning dust reduces 7%, tail gas sulphur dioxide declines 25% to utilize the present embodiment to realize.
Embodiment 7
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: by MgCO
3mix with water, be mixed with mass concentration be 30% MgCO3 solution be covering solution, by K
2cO
3mix with water, be mixed with the K that mass concentration is 0.03%
2cO
3solution is catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 12%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 20%, and the quality of used catalyst solution and the mass percent of coal charge are 0.1%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 1200 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.03% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 11%, mode chain furnace combustion efficiency improves 8%, catalyst recovery yield reaches more than 73%, burning dust reduces 5%, tail gas sulphur dioxide declines 18% to utilize the present embodiment to realize.
Embodiment 8
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: by CaCO
3mix with water, be mixed with the CaCO that mass concentration is 5%
3solution is covering solution, by Na
2cO
3mix with water, be mixed with the Na that mass concentration is 0.01%
2cO
3solution is catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 1%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 1%, and the quality of used catalyst solution and the mass percent of coal charge are 0.01%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 800 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.01% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 8%, mode chain furnace combustion efficiency improves 7%, catalyst recovery yield reaches more than 70%, burning dust reduces 3%, tail gas sulphur dioxide declines 15% to utilize the present embodiment to realize.
Embodiment 9
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: by MgCO
3mix with water, be mixed with the MgCO that mass concentration is 50%
3solution is covering solution, is mixed by KOH with water, be mixed with mass concentration be 1% KOH solution be catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 4%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 5%, and the quality of used catalyst solution and the mass percent of coal charge are 3%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 900 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 1% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 9%, mode chain furnace combustion efficiency improves 8%, catalyst recovery yield reaches more than 72%, burning dust reduces 4%, tail gas sulphur dioxide declines 16% to utilize the present embodiment to realize.
Embodiment 10
The invention provides a kind of chain furnace coal combustion catalyst circulation utilization method, its operating procedure is as follows:
A, solution preparation: by MgCO
3mix with water, be mixed with the MgCO that mass concentration is 10%
3solution is covering solution, by Na
2cO
3mix with water, be mixed with the Na that mass concentration is 0.8%
2cO
3solution is catalyst solution, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 4%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 5%, and the quality of used catalyst solution and the mass percent of coal charge are 3%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 900 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.8% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
Chain furnace is energy-conservation 10%, mode chain furnace combustion efficiency improves 9%, catalyst recovery yield reaches more than 73%, burning dust reduces 3%, tail gas sulphur dioxide declines 15% to utilize the present embodiment to realize.
In above embodiment, chain furnace energy-saving efficiency is under contrasting coal amount identical when not adding catalyst, the percentage that steam production increases; Mode chain furnace combustion efficiency contrasts identical quantity of steam under coal amount identical when not adding catalyst, and coal reduces percentage; Catalyst recovery yield is by the total amount of the catalyst reclaimed than the catalyst of upper applying; Burning dust slip and tail gas sulphur dioxide rate of descent are detected by flue gas analyzer to apply the dust of tail gas before and after catalyst and the amount of sulfur dioxide, then compare and draw.
The present invention is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present invention; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection scope of the present invention.
Claims (4)
1. a chain furnace coal combustion catalyst circulation utilization method, is characterized in that, its operating procedure is as follows:
A, solution preparation: mixed with water by covering, be mixed with the covering solution that mass concentration is 5% ~ 50%, mixed by catalyst with water, be mixed with the catalyst solution that mass concentration is 0.01% ~ 1%, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge, obtained coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 1% ~ 15%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 1% ~ 25%, and the quality of used catalyst solution and the mass percent of coal charge are 0.01% ~ 3%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 800 ~ 1200 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.01% ~ 1% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
2. a kind of chain furnace coal combustion catalyst circulation utilization method according to claim 1, it is characterized in that, its operating procedure is as follows:
A, solution preparation: mixed with water by covering, be mixed with the covering solution that mass concentration is 10% ~ 30%, mixed by catalyst with water, be mixed with the catalyst solution that mass concentration is 0.05% ~ 0.8%, stand-by;
B, coal charge are coated: outer surface covering solution being coated on coal charge by the mode of spraying or flood, obtains coated coal charge, and wherein the quality of covering solution used and the mass percent of coal charge are 10% ~ 15%;
C, catalyst cupport: catalyst solution is atomized, then the coated dry coal material obtained with b step contacts, obtain catalyst cupport coal charge, the mass percent being wherein atomized quality and the coal charge added water is 10% ~ 15%, and the quality of used catalyst solution and the mass percent of coal charge are 0.05% ~ 1%;
D, coal burning: catalyst cupport coal charge step c obtained, burn, obtain coal ash at 800 ~ 1000 DEG C;
E, washing and recycling: coal ash Step d obtained mixes with water, remove impurity after catalyst quality concentration reaches 0.05% ~ 0.8% in mixed solution, and namely obtained catalyst solution, finally stores catalyst solution, and continue to recycle.
3. a kind of chain furnace coal combustion catalyst circulation utilization method according to claim 1, is characterized in that: described covering is alkaline earth metal compound.
4. a kind of chain furnace coal combustion catalyst circulation utilization method according to claim 1, is characterized in that: described catalyst is alkali-soluble alkali or alkali-soluble salt.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067056A (en) * | 2007-06-14 | 2007-11-07 | 济南大学 | Nanometer ecological paint |
| CN201382659Y (en) * | 2009-03-05 | 2010-01-13 | 无锡市宜刚耐火材料有限公司 | Drying device for producing honeycomb-type DeNOx catalyst |
| CN102295970A (en) * | 2011-07-29 | 2011-12-28 | 山东宏艺科技股份有限公司 | Coal combustion improver |
| CN102643704A (en) * | 2012-05-14 | 2012-08-22 | 清远市卫尔信化工建材有限公司 | Fuel coal oxygen-increasing combustion-supporting explosion pill as well as preparation method and application thereof |
| CN102872846A (en) * | 2012-10-12 | 2013-01-16 | 合肥工业大学 | Coal ash microsphere loaded one-dimensional nanometer titanium dioxide (TiO2) composite photocatalyst and preparation method thereof |
| CN103301825A (en) * | 2013-06-13 | 2013-09-18 | 中国科学院城市环境研究所 | Photocatalyst of titanium oxide nanosheet-coated flay ash microsphere |
| JP2014094352A (en) * | 2012-11-09 | 2014-05-22 | Mitsubishi Heavy Ind Ltd | Device and method for exhaust gas treatment |
-
2015
- 2015-02-15 CN CN201510082516.XA patent/CN104696947B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067056A (en) * | 2007-06-14 | 2007-11-07 | 济南大学 | Nanometer ecological paint |
| CN201382659Y (en) * | 2009-03-05 | 2010-01-13 | 无锡市宜刚耐火材料有限公司 | Drying device for producing honeycomb-type DeNOx catalyst |
| CN102295970A (en) * | 2011-07-29 | 2011-12-28 | 山东宏艺科技股份有限公司 | Coal combustion improver |
| CN102643704A (en) * | 2012-05-14 | 2012-08-22 | 清远市卫尔信化工建材有限公司 | Fuel coal oxygen-increasing combustion-supporting explosion pill as well as preparation method and application thereof |
| CN102872846A (en) * | 2012-10-12 | 2013-01-16 | 合肥工业大学 | Coal ash microsphere loaded one-dimensional nanometer titanium dioxide (TiO2) composite photocatalyst and preparation method thereof |
| JP2014094352A (en) * | 2012-11-09 | 2014-05-22 | Mitsubishi Heavy Ind Ltd | Device and method for exhaust gas treatment |
| CN103301825A (en) * | 2013-06-13 | 2013-09-18 | 中国科学院城市环境研究所 | Photocatalyst of titanium oxide nanosheet-coated flay ash microsphere |
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| CN104696947B (en) | 2017-03-01 |
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