CN86102302B - Combustion installation for the chain-conveyor furnace - Google Patents
Combustion installation for the chain-conveyor furnace Download PDFInfo
- Publication number
- CN86102302B CN86102302B CN86102302A CN86102302A CN86102302B CN 86102302 B CN86102302 B CN 86102302B CN 86102302 A CN86102302 A CN 86102302A CN 86102302 A CN86102302 A CN 86102302A CN 86102302 B CN86102302 B CN 86102302B
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- CN
- China
- Prior art keywords
- coal
- combustion
- present
- chain
- shaping
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title abstract description 8
- 238000009434 installation Methods 0.000 title 1
- 239000003245 coal Substances 0.000 claims abstract description 47
- 239000000446 fuel Substances 0.000 claims description 13
- 238000000465 moulding Methods 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003546 flue gas Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract 3
- 238000010304 firing Methods 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 239000003818 cinder Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 238000013316 zoning Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Solid-Fuel Combustion (AREA)
Abstract
The present invention relates to a combustion device for a chain-conveyor furnace, which is provided with a shaping roller which is arranged at the inner part of a coal hopper, and a shaping coal-feeding device in front of a furnace, wherein the shaping coal-feeding device is composed of a speed regulating motor and a speed reducing gearbox. The present invention collects coal manufacture and combustion into a whole, is suitable for the burning of raw coal with many fines, and can improve combustion conditions and reduce pollutant discharge amount. The present invention can solve the problems of low coal economic benefit and difficult generalization, and the device is also provided with a flue gas pump-back system so as to prevent unstable firing because of frequent fluctuation of the coal and large particles. The device has the advantages of simple structure, reliable running, high combustion efficiency and less investment.
Description
The present invention relates to a kind of chain furnace grate combusting device, especially a kind of chain furnace grate combusting device of forming by coal bunker, coal gate traveling-grate stoker.
Chain furnace grate combusting device is used extremely wide in Industrial Boiler.(Tongji University compiles, and China Construction Industry Press published the 4th chapter P in 1979 as " boiler and boiler room equipment "
59-67Shown in Fig. 4-7).Chain furnace is transported among the coal bunker of stokehold by fortune coal equipment usually with coal, and coal borrows deadweight to be slipped on the fire grate, is brought in the stove by the fire grate that is moving from A-P.But when the coal gate of regulating by oscilaltion, promptly regulated coal seam thickness on demand.Along with fire grate moves backward and finished the fuel preheating, dry and burn each stage, required air is delivered to by blower fan and is separated in the fire grate abdomen middle frame and can regulates in the branch storehouse of air distribution by subregion.In recent years, along with carrying out of coal mining machineryization and coal cleaning process, it is little that the granularity of fuel coal is changeed day by day, thereby the problem that original chain furnace grate combusting device and fuel are difficult to adapt to occurred, and efficiency of combustion is low, and pollutant discharge amount is big.Facts have proved that briquet can improve efficiency of combustion effectively, reduce the discharging of pollutant.But, present moulded coal all is centralized production supply user, need be through repeatedly carrying and storing a period of time, therefore just require when rolling moulded coal, raw coal to be carried out pure powder, add suitable binding agent, and apply high extruding force to improve the cold strength and the strength stability of moulded coal, so just improved the moulded coal cost of manufacture, add the investment of founding the factory, the freight of raw coal and moulded coal etc. make briquet lose its economic benefit and are difficult to promote.
The purpose of this invention is to provide a kind of chain furnace grate combusting device that does not need prior with the raw coal moulding, thereby save the moulded coal cost.
In order to achieve the above object, the present invention has taked following solution:
The shaped device of as fired fuel is set before original chain furnace gate, and this device is mounted in the molding roller of coal bunker bottom.
The present invention collects the moulded coal making and is one with burning, has all advantages of moulded coal burning, and it is low to help solving the meticulous efficiency of combustion of bringing of fuel granularity, and the problem that dust discharge amount is big has been avoided the cost problem of bringing because of moulded coal making transportation again.The smoke pumpback system that this device is used can make fuel shift to an earlier date stable ignition under the situation of not establishing blower fan in addition.
The invention will be further described below in conjunction with accompanying drawing.
Accompanying drawing is the chain furnace schematic diagram that has briquetting before boiler device and smoke pumpback system.
Granularity is at 0～25mm, raw coal (the flammable matter fugitive constituent 15～45% without pulverizing of moisture content between 6～10%, the as fired basis low heat valve is greater than 3500 kilocalorie/kilograms) be transported among the preceding coal bunker (3) of tweel, be rolled into moulded coal through molding roller (1), molding roller is made by cast iron or cast steel, process the matrix mould on the surface, take turns roughly the same with the type of common briquetting press, roll length is identical with the traveling-grate stoker effective width, roll center line and stoker surface are at a distance of 300～500mm, the centre-to-centre spacing of two rolls has determined to clamp-on the angle, it is granularity by raw coal, the decision of factors such as moisture content, for present common fuel coal, the roll center can be selected 200 millimeter for use.When the traveling-grate stoker (7) that the coal cinder of roll forming drops to 200～400mm height is gone up, can be divided between the about 6～25mm of granularity some to some extent, chip seldom occur.Bring in the stove by the fire grate that is moving from A-P, when regulating the coal gate (4) be installed on the face arch (5) by coal gate adjusting device (2), promptly regulated the thickness of coal-fired layer (6) on demand, along with moving slowly backward, fire grate finishes preheating and drying gradually, burn each stage, heat takes place with coal and is situated between in general burning when being heated to more than 350 ℃, and presents caking property, this just makes coal cinder become loose coke button in irregular shape, and such coke button is more incendive.
Smoke pumpback system can be provided with smoke mouthful (12) at first air compartment (8) of air zoning under the fire grate, flue gas is drawn into flue (11) through fuel bed, arrive pressure fan (9) import through a smoke regulating valve (10) again, enter each air compartment then with after air mixes, pass fire grate and fuel bed and get back in the stove, the exhaust gas volumn of pumpback is controlled by smoke regulating valve.Adopting such smoke pumpback system is in order to prevent because of the frequent instability of catching fire that may bring greatly because of the moulded coal particle that reaches of coal change.The section of catching fire that it can cause the high-temperature flue gas in the burner hearth fire grate with go into the new coal of stove and carry out strong heat exchange, accelerate the intensification of fuel, dry and fugitive constituent precipitation process, thereby make fuel fire in advance and stablize.The exhaust gas volumn of pumpback depends on factors such as using coal, moisture content and particle size.The difference of smoke pumpback system of this device and the common smoking device of air that adopts is that the flue gas of pumpback is to introduce fresh air inlet (FAI, need not use blower fan in addition.The flue gas that contains fuel gas of pumpback can be in return equably stove on the grate area behind the mouth.
Claims (3)
1, a kind of chain furnace grate combusting device, this device comprise coal bunker (3), coal gate (4), traveling-grate stoker (7), it is characterized in that being provided with before the coal gate and then the shaped device of as fired fuel.
2, a kind of chain furnace grate combusting device according to claim 1 is characterized in that the shaped device of said as fired fuel is mounted in the molding roller (1) of coal bunker (3) bottom.
3, a kind of chain furnace grate combusting device according to claim 1 and 2 is characterized in that the surface of said molding roller (1) has the matrix mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86102302A CN86102302B (en) | 1986-04-03 | 1986-04-03 | Combustion installation for the chain-conveyor furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86102302A CN86102302B (en) | 1986-04-03 | 1986-04-03 | Combustion installation for the chain-conveyor furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86102302A CN86102302A (en) | 1987-10-14 |
| CN86102302B true CN86102302B (en) | 1988-06-08 |
Family
ID=4801685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86102302A Expired CN86102302B (en) | 1986-04-03 | 1986-04-03 | Combustion installation for the chain-conveyor furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86102302B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1945116B (en) * | 2006-09-05 | 2011-06-08 | 沈阳国惠供热有限公司 | Circulation fixing bed split phase combustion technology |
| CN101412938B (en) * | 2008-11-19 | 2012-03-14 | 刘昌福 | Non-pair roller pneumatic demoulded briquette and production apparatus thereof |
| CN102384484A (en) * | 2011-11-14 | 2012-03-21 | 宝鸡市海浪锅炉设备有限公司 | Novel oxygen supply device for coal combustor |
| CN103528088A (en) * | 2012-07-06 | 2014-01-22 | 郭忠明 | Fire adjustment system of biomass fuel gasification two-stage combustion furnace |
| CN109028155A (en) * | 2018-07-11 | 2018-12-18 | 山东沾化民恒环保材料有限公司 | Clean moulded coal special furnace set |
-
1986
- 1986-04-03 CN CN86102302A patent/CN86102302B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86102302A (en) | 1987-10-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| 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 | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20010307 Decision number of declaring invalidation: 3042 |