CN1038196C - Combustion improver for providing coking of coal and preparing method thereof - Google Patents
Combustion improver for providing coking of coal and preparing method thereof Download PDFInfo
- Publication number
- CN1038196C CN1038196C CN 94106075 CN94106075A CN1038196C CN 1038196 C CN1038196 C CN 1038196C CN 94106075 CN94106075 CN 94106075 CN 94106075 A CN94106075 A CN 94106075A CN 1038196 C CN1038196 C CN 1038196C
- Authority
- CN
- China
- Prior art keywords
- coal
- combustion improver
- magnesium
- coking
- combustion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003245 coal Substances 0.000 title claims abstract description 38
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 238000004939 coking Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 15
- 239000011777 magnesium Substances 0.000 claims abstract description 15
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 14
- 239000011575 calcium Substances 0.000 claims abstract description 14
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- 239000004927 clay Substances 0.000 claims description 15
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 12
- 229910002651 NO3 Inorganic materials 0.000 claims description 12
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 12
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 12
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 5
- 238000003837 high-temperature calcination Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002994 raw material Substances 0.000 abstract description 7
- 239000002956 ash Substances 0.000 abstract description 6
- 239000000654 additive Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010304 firing Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 229910001570 bauxite Inorganic materials 0.000 abstract 2
- 150000002823 nitrates Chemical class 0.000 abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 150000001337 aliphatic alkines Chemical class 0.000 description 6
- 229910001960 metal nitrate Inorganic materials 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000012286 potassium permanganate Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229940001516 sodium nitrate Drugs 0.000 description 2
- 235000010344 sodium nitrate Nutrition 0.000 description 2
- 239000004317 sodium nitrate Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention relates to a combustion improver for preventing coking of coal and a preparing method thereof. The combustion improver is made by proportionally mixing three materials, such as bauxite, nitrates of alkaline earth metal-calcium and magnesium, and industrial flyash, or the bauxite and the nitrates of the alkaline earth metal-calcium and magnesium. The combustion improver which has wide sources of raw materials has the advantages of increasing the melting point of ash, reducing the content of combustible substances in ash slag and the content of SO2 and NOx in flue gas, etc. The combustion improver is used on trial in an industrial pulverized coal fired boiler with the medium pressure of 75 t/h to 130 t/h; the added quantity of the combustion improver is 3/1000 of the quantity of used coal; the combustion improver is proved to has a good using effect. The combustion improver can be used for grate firing boiler and civil coal combustion additives.
Description
The present invention relates to a kind of combustion improver for providing coking of coal and manufacture method thereof, this ignition dope belongs to and is used for the additive of industrial coal powder boiler with coal combustion, also can be used as grate firing boiler and civilian burning of coal additive.
Save energy is as a secular strategic task, paid close attention to by the personage of each side, especially improved the fired coal combustion quality, reduced aspects such as coal consumption, minimizing pollution in exploration, different industries is all conducting a research from different angles, method of seeking to solve and approach.In recent years, there were many people doing a lot of work aspect the Application and Development of ignition dope.Chinese patent CN1052135A, on June 12nd, 1991 disclosed comburant for cleaning soot deposits of boiler, a kind of ignition dope of forming by yellow soda ash, sodium-chlor, SODIUMNITRATE, magnesium slag, ground silica, zinc powder, red iron oxide, its objective is makes it in burning back, furnace flame district to react with crock comes off, and reaches and removes crock and help burning; Chinese patent CN1053083A, on July 17th, 1991 disclosed " a kind of additive for fire coal and using method thereof ", having described with solid sulphur composition is the slag that contains ferric oxide and Manganse Dioxide, filler is the scoriaceous product that contains silicon-dioxide and aluminum oxide, and it act as solid sulphur, oxidation catalysis, in use should follow the ash total amount must not be higher than 40% principle; Chinese patent CN1054263A, on September 4th, 1991 disclosed " coal burning accelerator ", it is a kind of sodium chloride base mixture, contain a certain amount of SODIUMNITRATE, potassium permanganate, yellow soda ash, potassium oxide (or replacing sodium-chlor), its effect is followed successively by catalysis, oxidation, solid sulphur and scarifying, its function improves fire box temperature, reduces oke exhaust blackness for economizing on coal, and is used for the combustion-supporting of steam coal.Go up according to this disclosed invention, though its composition and performance are variant as can be seen, basic function all has solid sulphur, combustion-supporting effect.Its existing weak point is summarized following all points: one, contain strong oxidizers such as potassium permanganate, and security of products is not good enough, and cost is higher; Its two, contain a large amount of sodium salts, ferric oxide and Manganse Dioxide, the fine coal fusion point of ash is reduced, coking easily, the adaptability that is used for industrial coal powder boiler is relatively poor.Thereby await developing and be suitable for the ignition dope that industrial coal powder boiler uses.
The objective of the invention is weak point at prior art and product, raw material such as bauxitic clay with cheapness, industrial flyash etc. and admixture, prepare a kind of have stop coking, combustion-supporting and absorb multinomial function such as acidic oxide, and can be applicable to the additive for fire coal of industrial coal powder boiler, grate firing boiler and civilian coal combustion.
The object of the present invention is achieved like this: described combustion improver for providing coking of coal, it is the nitrate of bauxitic clay, alkaline earth metals calcium and magnesium and the mixture of industrial flyash, the also mixture of the nitrate of bauxitic clay, alkaline earth metals calcium and magnesium, its Chemical Composition is listed as follows:
Combustion improver for providing coking of coal Chemical Composition table
The manufacture method of described combustion improver for providing coking of coal is:
(1) main raw material and preparation thereof: bauxitic clay, Al
2O
3% 〉=65%, after the high-temperature calcination, broken, be finely ground to the 0.080mm square hole and tail over and be no more than 10%; The nitrate of alkaline earth metals calcium and magnesium is sand shape or powdery, crystal water n＜3, and fusing point is not less than 60 ℃; The industrial flyash drying is removed agglomerate and impurity, is powdery.
Bauxitic clay is as stoping coking, and the nitrate of alkaline earth metals calcium and magnesium is as improving combustion position, and the oxide compound that its pyrolytic decomposition generates absorbs SO
2Deng acidic oxide, industrial flyash is a filler.
(2) batching and product preparation
The nitrate of the bauxitic clay of getting ready, alkaline earth metals calcium and magnesium, three kinds of raw materials of industrial flyash are prepared burden by percent by weight, two kinds of raw materials of the nitrate of also available bauxitic clay, alkaline earth metals calcium and magnesium are by the percent by weight batching, the material for preparing is inserted mechanical stirring mixing, packing, check in the mixer, makes described combustion improver for providing coking of coal.The percent by weight proportioning of raw material is:
Proportioning 1: bauxitic clay 20～50%, the nitrate 25～50% of alkaline earth metals calcium and magnesium, industrial flyash 20～40%;
Proportioning 2: bauxitic clay 60～80%, the nitrate 20～40% of alkaline earth metals calcium and magnesium.
The present invention compared with the prior art has following obvious superiority:
(1) improves ash fusion point, prevent coal-fired coking;
(2) improve the fired coal combustion performance, reduce combustible content in the flyash;
(3) reduce SO in the stack gas
2And NO
xContent alleviates environmental pollution;
(4) raw material has source widely, and has opened up an approach for the industrial residue comprehensive utilization, and good environmental benefit is arranged;
(5) scope of application is extensive.
Fig. 1 is combustion improver for providing coking of coal technological process of production figure.
1 pair of embodiments of the invention is described below in conjunction with the accompanying drawings:
Bauxitic clay, Al
2O
3〉=65%, through high-temperature calcination, broken, be finely ground to granularity and be no more than 10% for the 0.080mm square hole tails over, alkine earth metal nitrate is sand shape or mealy crystal, crystal water n＜3, and the industrial flyash drying is powdery, remove agglomerate and foreign material, take two kinds of proportion ingredients, its batching example is:
Prepare burden by proportioning 1:
Example 1,35% bauxitic clay, 35% alkine earth metal nitrate and 30% industrial flyash.
Example 2,30% bauxitic clays, 40% alkine earth metal nitrate and 30% industrial flyash.
Example 3,40% bauxitic clays, 30% alkine earth metal nitrate and 30% industrial flyash.
Prepare burden by proportioning 2:
Example 4,60% bauxitic clays, 40% alkine earth metal nitrate.
Example 5,70% bauxitic clays, 30% alkine earth metal nitrate.
After above example batching, in mixer,, promptly can be made into combustion improver for providing coking of coal product of the present invention through mechanical stirring mixing, packing.Example 1 to 3 product of being made meets A in the table
1Series products, example 4 to 5 meets table 1A
2Series products.
By the combustion improver for providing coking of coal of above examples produce, in the 75t/h-130t/h of heating power factory of China Changcheng Aluminium Industry Co, pressed industrial coal powder boiler on probation, the ignition dope add-on is 3 ‰ of a coal consumption, result of use is as follows:
(1) steam per ton is saved coal 18.1kg coal saving rate about 10% in kind;
(2) boiler thermal output brings up to 88.45% by 83.43%;
(3) heat loss due to exhaust gas drops to 9.33% by 11.86%; (4) heat loss due to unburned gas drops to 0.54% by 2.68%; (5) heat loss due to combustibles in refuse drops to 1.18% by 1.49%; (6) ash combustibles content obviously reduces; (7) smoke evacuation in the acidic oxide reduced rate greater than 60%; (8) stop coal-fired coking effectively, guaranteed safe operation of the boiler.
Claims (2)
1. one kind is used for the improver for providing coking that industrial coal powder boiler is used coal combustion, and it is characterized in that: said ignition dope is a bauxitic clay, the mixture that the nitrate of alkaline earth metals calcium and magnesium and industrial flyash are formed, and its mass percent is: contain Al
2O
3〉=65%, and, be the nitrate of sand shape or powdered alkaline earth metals calcium and magnesium, crystal water n＜3,25-50%, industrial flyash 20-40% through the bauxitic clay 20-50% of high-temperature calcination.
2. one kind is used for the improver for providing coking that industrial coal powder boiler is used coal combustion, and it is characterized in that: said ignition dope is a bauxitic clay, the mixture that the nitrate of alkaline earth metal calcium and magnesium is formed, and its mass percent is: contain Al
2O
3〉=65%, and, be the nitrate of sand shape or powdered alkaline earth metals calcium and magnesium, crystal water n＜3,20-40%. through the bauxitic clay 60-80% of high-temperature calcination
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94106075 CN1038196C (en) | 1994-06-08 | 1994-06-08 | Combustion improver for providing coking of coal and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94106075 CN1038196C (en) | 1994-06-08 | 1994-06-08 | Combustion improver for providing coking of coal and preparing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1096535A CN1096535A (en) | 1994-12-21 |
| CN1038196C true CN1038196C (en) | 1998-04-29 |
Family
ID=5032369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94106075 Expired - Fee Related CN1038196C (en) | 1994-06-08 | 1994-06-08 | Combustion improver for providing coking of coal and preparing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1038196C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160356B (en) * | 2011-12-19 | 2016-05-25 | 湖南晟通科技集团有限公司 | Integrated additive for fire coal of combustion-supporting solid sulfide denitration decoking and its preparation method and application |
| CN103396856A (en) * | 2013-07-05 | 2013-11-20 | 西安近代化学研究所 | Boron-magnesium composite particle for fuel-rich propellant |
-
1994
- 1994-06-08 CN CN 94106075 patent/CN1038196C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1096535A (en) | 1994-12-21 |
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|---|---|---|---|
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| C10 | Entry into substantive examination | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |