CN2375636Y - Combustion-supporting controllable arch coke oven lid - Google Patents
Combustion-supporting controllable arch coke oven lid Download PDFInfo
- Publication number
- CN2375636Y CN2375636Y CN 98241907 CN98241907U CN2375636Y CN 2375636 Y CN2375636 Y CN 2375636Y CN 98241907 CN98241907 CN 98241907 CN 98241907 U CN98241907 U CN 98241907U CN 2375636 Y CN2375636 Y CN 2375636Y
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- China
- Prior art keywords
- combustion
- supporting
- coke oven
- arch form
- flashboard
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Abstract
The utility model relates to a combustion-supporting controllable arched cover for a coke oven. The arched cover for a coke oven is provided with a plurality of one time combustion supporting regulation holes and restrictors in three rows and two rows of secondary combustion supporting regulation holes and restrictors, and the arched cover for a coke oven is provided with reverberating and ignition holes, so that combustion inside an arch ring of the coke oven can be controlled effectively, and the combustion can become a destructive distillation coking process which is composed of a rich oxygen atmosphere, a poor oxygen atmosphere, and an inert gas atmosphere. Thus, the quality and the yield of coke can be ensured, and the discharged exhaust gas can met the requirement of environmental protection.
Description
The utility model relates to a kind of arch form lid for coke oven of combustion-supporting adjusting controllable type, belongs to the pit kiln field.
Existing pit kiln bell, during as coking such as Pingxiang stove, the Seventh Five-Year Plan stoves, needed air all is to supply with from the side west of coke oven in igniting and the carbonization process, and does not have secondary combustion air adjustment hole.So just caused from igniting, heated required air and directly contact, made coke surface be in the state of oxidation for a long time, formed burnt layer of thicker change and grey foam layer with focal plane.Simultaneously since combustion-supporting air distribution inequality, make pyrogenic temperature inequality, produce that charing Jiao is many, green coke is many, coke quality does not also increase, it is low to produce burnt rate.
Technical purpose of the present utility model is to adopt the combustion-supporting hole of three rows is arranged on the bell; thereby required air from top control charing and when igniting; in the arch ring of arch form bell, form combustion chamber than large space; chimney arch is pushed up formed three level combustion atmospheres to the coking surface; be oxygen-rich layer, oxygen-poor layer and inert gas cover; coking coal can be at dry distillation coking under the protection of inert gas, makes the quality of coke and produces burnt rate and improve greatly.Also solved simultaneously environmental issue.
The combustion-supporting controllable type arch form of the utility model pit kiln furnace roof, include three combustion-supporting hole of row and the control device that evenly communicate with the combustion chamber, two row's secondary air registers holes and setting devices thereof also are communicated with downdraf hole and flue, and and per two adjacent stoves between be provided with vent adjustable plate device from the connection, top, vent is positioned at the bottom of two furnace roof side walls and every adjacent stove all can be ignited mutually, utilize the fume afterheat in the adjacent stove combustion chamber, introduce the heating coking coal by suction function.When reaching 800 ℃, can stop to ignite, make coking coal enter destructive distillation coking state.
When igniting, required combustion air is from adding by the combustion-supporting adjustment hole of the furnace roof of adjacent stove one side of igniting, ignite when finishing, the combustion chamber medial temperature reaches more than 800 ℃, close its combustion-supporting adjustment hole, thereafter open combustion-supporting adjustment hole of furnace roof intermediary and quantitatively control, making burning form the different about 20cm of combustion atmosphere dome portions one bed thickness from top to bottom is the oxygen-enriched atmosphere layer, the middle raw gas that rises for diffusion mixes violent incendiary oxygen-lean atmosphere layer with the oxygen rich gas of upper strata diffusion, and oxygen-poor layer thickness is 40-50cm.The heat energy that is discharged is given the coking chamber coking coal through convection current, radiation, conduction, coking coal is subjected to thermo-cracking and produces the raw gas of rare gas element continuously, the raw gas of inert atmosphere closely is covered in the coking coal surface, makes coking coal destructive distillation coking under the situation of abundant secluding air.The inert atmosphere layer is about 30～40cm.
In the combustion chamber in the arch form furnace roof, under the atmosphere of three levels, burn, the heat energy that is produced is by convection current, radiation is directly conducted in coking coal and has been improved heat energy utilization, the cracking that is fully burned of inflammable gas and objectionable impurities, reduced pollutent, waste heat is retracted into flue because of gas is subjected to suction function from routine hungry ghosts who spit fire.
Be described in further detail below in conjunction with accompanying drawing.
Fig. 1 is combustion-supporting controllable type arch form pit kiln furnace roof cross-sectional view.
Fig. 2 is combustion chamber three a level atmosphere distribution schematic diagram.
Among the figure, 1. once combustion-supporting adjustment hole and flashboard; 2. combustion-supporting hole of secondary and flashboard; 3. leader hole flashboard setting device; 4. vent flashboard; 5. vent; 6. furnace wall; 7. downdraf hole; 8. arch form furnace roof; 9. top cover body; 10 flues; 11. oxygen-rich layer; 12. oxygen-poor layer; 13. layer of inert.
The combustion-supporting controllable type arch form of the utility model lid for coke oven is to realize like this.Make arch form furnace roof (8) at the middle part of top cover body (9) as shown in Figure 1, the center of arch form furnace roof (8) and both sides have once combustion-supporting adjustment hole and flashboard (1).Between the bottom (8) of arch form furnace roof and furnace wall (6), be provided with downdraf hole (7), between the opposite side of furnace wall (6) and arch form furnace roof (8) bottom, be provided with two row combustion-supporting holes of secondary and flashboard (2) and flue (10) and communicate.Bottom opposite side at arch form furnace roof (8) is provided with vent (5) and vent flashboard (4), is combustion-supporting controllable type arch form lid for coke oven.
During coking, owing to can be used for conjuncted pit kiln, so, bell is buckled on the coking body of heater, ignite and to utilize the vent of adjacent stove to open, open once combustion-supporting adjustment hole and flashboard again, the air of regulating and the ratio of coal gas, according to temperature and charing amount, coal gas amount and gas velocity when coking amount and coking, temperature by in the stove of the different distributions point adjusting of combustion-supporting adjusting once and the combustion-supporting adjusting of secondary can form as shown in Figure 2 oxygen-rich layer (11), oxygen-poor layer (12) and layer of inert (13) in the arch form circle.At this moment layer of inert (13) separates burned flame with burnt layer.The heat that burning discharges in oxygen-lean atmosphere (12) conducts to coking coal through the convection current radiation, inflammable gas is constantly provided by thermo-cracking and is diffused into oxygen-poor layer by coking coal, spread the air mixed of getting off with the hyperoxia layer again and burn continuously and stably, can reach and make coking coal destructive distillation moulding.Improved significantly and produced burnt rate and coke quality, be retracted into flue under the effect of obnoxious flavour composition after fully burning and in negative pressure, reduced environmental pollution, the vent that utilizes suction function and be communicated with adjacent furnace roof is opened the flashboard of igniting, and the high-temperature flue gas in the adjacent stove can be introduced coking coal is added thermal ignition, make coking coal be subjected to thermo-cracking to enter the charing state, save the energy, improved heat energy utilization, also reduced disposal of pollutants significantly.
Claims (3)
1, a kind of combustion-supporting controllable type arch form lid for coke oven, it is characterized in that at the middle part of top cover body (9) being arch form furnace roof (8), the center of arch form furnace roof (8) and both sides have once combustion-supporting adjustment hole and flashboard (1), between the bottom of arch form furnace roof (8) and furnace wall (6), be provided with downdraf hole (7), between the opposite side of furnace wall and arch form furnace roof (8), be provided with two row combustion-supporting holes of secondary and flashboard (2) and flue (10) and communicate, between the bottom of arch form furnace roof (8) and furnace wall, be provided with vent (5) and vent flashboard (4) and flue 10 and communicate and get final product.
2, combustion-supporting controllable type arch form lid for coke oven according to claim 1, it is characterized in that described once combustion-supporting adjustment hole and flashboard be three row several.
3,, it is characterized in that combustion-supporting adjustment hole of described secondary and flashboard are that several are arranged in both sides two according to the described combustion-supporting controllable type arch form lid for coke oven of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241907 CN2375636Y (en) | 1998-10-28 | 1998-10-28 | Combustion-supporting controllable arch coke oven lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98241907 CN2375636Y (en) | 1998-10-28 | 1998-10-28 | Combustion-supporting controllable arch coke oven lid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2375636Y true CN2375636Y (en) | 2000-04-26 |
Family
ID=33988571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98241907 Expired - Fee Related CN2375636Y (en) | 1998-10-28 | 1998-10-28 | Combustion-supporting controllable arch coke oven lid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2375636Y (en) |
-
1998
- 1998-10-28 CN CN 98241907 patent/CN2375636Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |