CN1092457A - Contiuum type coke furnace and coking process thereof - Google Patents
Contiuum type coke furnace and coking process thereof Download PDFInfo
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- CN1092457A CN1092457A CN 94100971 CN94100971A CN1092457A CN 1092457 A CN1092457 A CN 1092457A CN 94100971 CN94100971 CN 94100971 CN 94100971 A CN94100971 A CN 94100971A CN 1092457 A CN1092457 A CN 1092457A
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Abstract
A kind of Contiuum type coke furnace includes one group of carbonization chamber that is arranged side by side, and shared one partition wall between per two carbonization chambers is provided with auxiliary chamber on the headwall of rear and front end, carbonization chamber, can be also used as coal port or coke outlet.Indoor quirk and the furnace roof combustion chamber that is interconnected that be provided with of carbonization, rear and front end, carbonization chamber wall bottom are respectively equipped with two series connection quirks, are connected with the quirk of each bottom, carbonization chamber.Corresponding coking process is that coking adopts the heat conduction steel pipe to conduct heat in earlier stage, reaches after 500 degree, extracts the heat conduction steel pipe out, inserts sulphur-fixing agent, after waiting to reach the outlet temperature of coking, adopts and inserts bilayer sleeve water flowing vaporization quenching.That the present invention is taken up an area of is little, investment is low, thermal losses is little, make full use of waste heat, reduce environmental pollution, can obviously improve coke quality and coking power.
Description
The present invention relates to a kind of pit kiln, and corresponding coking process.
Existing soil coke oven and modified version pit kiln thereof, as Pingxiang stove, XY type, KM type etc., all belong to the intermittent type pit kiln, its ubiquitous weak point is that dispersion coke oven floor space is big, cost is high, thermal losses is big, intensification on fire leans on coking coal self incendiary heat to carry out coking slowly, merely, the coke ash of being produced is big, quality is low, and it is low to produce burnt rate.
Purpose of the present invention is exactly the deficiency that overcomes above-mentioned prior art, and a kind of Contiuum type coke furnace that makes full use of heat energy, reduces coke oven occupation of land and cost is provided, and corresponding coking process.The present invention can realize than the complete and continuous production process, effectively improves the quality of producing the burnt rate and the coke that produces.
Contiuum type coke furnace includes one group of carbonization chamber that is arranged side by side, shared one partition wall between per two adjacent carbonization chambers, on the headwall of each rear and front end, carbonization chamber, be equipped with the auxiliary chamber that communicates with the carbonization chamber, the auxiliary chamber below is provided with removably fire bars and fire bars frame, and the outer end is the cover wall.This combustion chamber cover wall is provided with coal filling hole and is used to observe the porthole of furnace flame.After finishing carbonization and quenching, remove fire bars and fire bars frame, remove the cover wall of this combustion chamber, the space of this combustion chamber can be also used as coke outlet or coal port.
Bottom, carbonization chamber is provided with tempering road, ground, and middle part, carbonization chamber is provided with plane quirk and vertical quirk.Tempering road, ground, plane quirk and vertical quirk connect rear and front end, carbonization chamber all along carbonization chamber longitudinal extension.Vertically be communicated with by the distribution quirk between quirk and the plane quirk.Top, carbonization chamber is the furnace roof combustion chamber, and this combustion chamber is connected by quirk on the center that is located at central position, carbonization chamber with near quirk on the side wall of carbonization chamber side walls.The furnace roof combustion chamber is by being communicated with tempering road, ground near quirk under the side wall of carbonization chamber side walls, quirk is communicated with the furnace roof combustion chamber and is provided with quirk control punch and barrier down on the carbonization chamber side walls at place under side wall, is provided with the plate that matches with barrier in the side wall upper end.Insert this plate, can cut off the path between the quirk under furnace roof combustion chamber and the side wall, extract plate out, the furnace roof combustion chamber is communicated with quirk under the side wall.On furnace roof, be provided with the furnace roof hole, regulate the air admission amount when being used for coking or extract the heat conduction steel pipe out, add sulphur-fixing agent etc.
Be respectively equipped with two series connection quirks in the headwall bottom of rear and front end, carbonization chamber, the series connection quirk extends along the headwall of each carbonization chamber, and the tempering road, ground bottom each carbonization chamber is interconnected.Also be provided with waste heat and ignite on the headwall of carbonization chamber, quirk and auxiliary chamber are interconnected with connecting.On waste heat is ignited, be provided with plate, on the series connection quirk of each pit kiln headwall bottom, also be provided with plate, in order to the break-make of control quirk.The further fully burning of auxiliary chamber of igniting and the waste heat flue gas of previous pit kiln can be introduced next adjacent pit kiln by waste heat, so analogize, between pit kiln, realize the ladder transmission and the utilization of waste heat, with abundant energy efficient, deleterious flue burning gas is converted into heat energy utilization, reduce the consumption of coking coal, reduce atmospheric pollution.
Be described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the cross-sectional view of Contiuum type coke furnace.
Fig. 2 is that Contiuum type coke furnace bottom quirk is arranged and the coke oven plot plan.
Among the figure: 1, revetment, 2, following quirk control punch, 3, plate, 4, furnace roof, 5, the furnace roof hole, 6, vertical quirk, 7, the rising quirk, 8, the hot steel pipe of short-range missile, 9, quirk on the center, 10, quirk on the side wall, 11, waste heat is ignited, and 12, headwall, 13, auxiliary chamber, 14, vision slit, 15, coal filling hole, 16, the fire bars frame, 17, the earth, 18, plate, 19, fire bars, 20, the series connection quirk, 21, plate, 22, partition wall, 23, tempering road, ground, 24, the coal seam, 25, drainageway, 26, the solidified sulfur fuel layer, 27, the plane quirk, 28, distribute quirk, 29, long heat conduction steel pipe, 30, quirk under the side wall, 31, the earth, 32, outside furnace wall, 33, the furnace roof combustion chamber, 34, headwall, 35, the cover wall, 36, interlayer, 37, brick-on-end, 38, barrier, 39, the outlet of tempering road, ground, 40, flue, 41, little carbonization chamber, 42, the cigarette fontanel, 43, the carbonization chamber.
Contiuum type coke furnace includes one group of carbonization chamber 43 that is arranged side by side, shared one partition wall 22 between per two adjacent carbonization chambers.Outside furnace wall 32 outsides of outermost carbonization chamber are added with revetment 1, rise and reinforce and insulation effect.The quirk of each bottom, carbonization chamber is interconnected by the series connection quirk 20 of rear and front end, carbonization chamber.Be respectively equipped with the auxiliary chamber 13 of two same structures on the headwall of rear and front end, carbonization chamber, this auxiliary chamber below is provided with removable fire bars 19 and fire bars frame 16, and there is cover wall 35 outer end of auxiliary chamber, and cover wall 35 is provided with vision slit 14 and coal filling hole 15.
43 bottoms, carbonization chamber are provided with tempering road, ground 23, the middle part is provided with plane quirk 27 and vertically quirk 6, top are furnace roof combustion chamber 33.Tempering road, ground 23, plane quirk 27, vertical quirk 6 and furnace roof combustion chamber 33 layouts that be parallel to each other, and along carbonization chamber longitudinal extension, perforation rear and front end, carbonization chamber.Vertically quirk 6 is communicated with by distribution quirk 28 with plane quirk 27, is connected by quirk on the center 9 with near quirk 10 on the side wall of carbonization chamber side walls between furnace roof combustion chamber 33 and the plane quirk 27.Furnace roof combustion chamber 33 and tempering road, ground 23 are connected by quirk under the side wall.Coal seam 24 all adopts refractory brick interlayer 36 and each quirk and auxiliary chamber to separate in the carbonization chamber 43, to guarantee that coal seam 24 is in anoxic condition.Also be provided with the separate rising quirk 7 of vertical direction in the coal seam 24, each rising quirk 7 all communicates with furnace roof combustion chamber 33, so that coal seam 24 thermally equivalent more.
Baseplane, carbonization chamber is that the center is shape low between the senior middle school of both sides with the vertical equity medullary ray, and the gradient is 3 °-5 °.Also be provided with furnace bottom drainageway 25 under baseplane, carbonization chamber, drainageway 25 is positioned on the vertical equity medullary ray of baseplane, and the water of condensation that produces in coal washing water and the process of coking is in time discharged by furnace bottom drainageway 25.
Tempering road 23, ground supports by brick-on-end 37 with the refractory brick interlayer of plane quirk 27, will leave certain clearance between the brick-on-end 37, so that coal gas and coal washing water can pass through smoothly.
Series connection quirk 20 is located substantially on the same level attitude with tempering road, ground 23, and tempering road, ground 23 is connected with series connection quirk 20 by tempering road, ground outlet 39.The headwall of rear and front end, carbonization chamber is provided with waste heat and ignites 11, and the quirk 20 of will connecting is communicated with auxiliary chamber 13.Igniting at waste heat is provided with plate 21 on 11, is provided with plate 18 on series connection upper track 20, can control the break-make of two quirks respectively, and plate 18 is positioned at auxiliary chamber 13 belows.
Contiuum type coke furnace should design chimney 42 on the central position preferably, so that flue 40 is the shortest, and identical to the suction of carbonization chamber, both sides.Chimney 42 communicates with series connection quirk 20 by flue 40.On the two sides, front and back of chimney two little carbonization chambers 41 are set respectively, make to be interconnected to an integral body between each carbonization chamber, make full use of the soil again.Little carbonization chamber 41 has only front end to establish an auxiliary chamber, back-end closure, and little carbonization chamber 41 structures are identical with carbonization chamber 43.Flue 40 is positioned at the carbonizing chamber of coke oven below.Be to improve the stability and the heat retaining property of coke oven, the bottom of Contiuum type coke furnace can be imbedded undergroundly, generally can bury position to 1/3rd.
Adopt Contiuum type coke furnace coking, manually from auxiliary chamber 13 coking coal is pushed, with refractory brick each quirk is set while coaling with dolly, half meter of every dress pushes away flat, compacting with the coal seam, and, help the coke moulding at upper berth, coal seam one deck toilet paper, alleviate labour intensity when the discharging of the coke.
Between bottom coal seam below the plane quirk 27 and plane quirk 27, adopt the solidified sulfur fuel layer that coal seam and quirk are isolated, to reduce the consumption of coking coal.Solidified sulfur fuel is to adopt inferior fuel such as coal gangue, coal slime, coke powder end and lime or ground dolomite formulated, and general configuration proportion can be colliery powder 30%, coal slime 30%, coke powder end 25%, lime powder (or ground dolomite) 15%.When coalingging, the heat conduction steel pipe given and burying, the heat conduction steel pipe divides long and short two kinds, the hot steel pipe 8 of short-range missile is communicated with furnace roof combustion chamber 33 and plane quirk 27, long heat conduction steel pipe 29 is communicated with furnace roof combustion chamber 33 and tempering road, ground 23, in coal seam 24, form the steel pipe fire hole road under duct and the steel pipe of getting angry respectively, can improve the coking heat transfer efficiency in early stage greatly.
After lighting coke oven, flame in the auxiliary chamber is passed to coal seam 24 by each quirk in the carbonization chamber 43 rapidly and equably with heat, residual gas after the burning enters series connection quirk 20 through tempering road, ground outlet 39, smoke plate 21, residual gas is ignited through waste heat again and 11 is entered that the fuel in auxiliary chamber further burns in the auxiliary chamber of next adjacent carbonization chamber, and the like, realized the ladder transmission of waste heat.
Before phase to 500 degree on fire, the heat conduction steel pipe that inserts in the coal seam can effectively improve heat transfer efficiency.Treat that the carbonization chamber reaches 500 when spending, the heat conduction steel pipe is extracted out, and adopt sulphur-fixing agent to fill up long and short heat conduction steel pipe and extract duct that the back stays out in the coal seam to prevent the coking coal ashing by furnace roof hole 5.Sulphur-fixing agent is to adopt the coke powder end formulated with lime or ground dolomite, and general configuration proportion is coke powder end 70%, lime powder (or ground dolomite) 30%.
After the outlet temperature of coking is finished, in the high temperature cabonization chamber, insert several bilayer sleeves by furnace roof hole 5, and feeding aqueous vapor quenching, water at high temperature gasifies, in the carbonization chamber, form vapor pressure greater than external air pressure, outside air can't enter in the stove, and under anoxia condition, coke is cooling rapidly in steam.High-temperature residual heat carry secretly the part steam through tempering road, ground 23 and series connection quirk 20 enter next adjacent carbonization chamber and carry out the steam desulfurization.Realize the recycling of steam desulfurization and waste heat steam.
Contiuum type coke furnace can be controlled the break-make of each carbonization chamber quirk by plate 18,21, turn-offs a certain carbonization chamber of having finished coking thus, discharges of the coke or coalings again, realizes whole serialization process of coking.
The present invention can effectively reduce occupation of land, reduce investment, makes full use of the waste heat flue gas, realizes that ladder conducts heat, and reduces heat energy loss, greatly reduces the discharging of harmful flue dust, reduces environmental pollution.Simultaneously, reduce the consumption of coking coal itself, shortened coking time, and reduced the ash content and the sulphur content of coke, improved the coke quality.Coking power can reach the 75-80% of used coking coal cleans.With same coking coal, adopt Contiuum type coke furnace of the present invention can improve a grade than the coke quality that adopts Pingxiang stove to be refined, produce burnt rate and improve more than 10%.
Claims (7)
1, a kind of Contiuum type coke furnace is characterized in that including one group of carbonization chamber that is arranged side by side, and shared one partition wall between per two adjacent carbonization chambers is equipped with the auxiliary chamber that communicates with the carbonization chamber on the headwall of rear and front end, carbonization chamber; The auxiliary chamber below is provided with removably fire bars and fire bars frame, and the auxiliary chamber outer end is the cover wall; Be respectively equipped with two series connection quirks in the headwall bottom of rear and front end, carbonization chamber, this series connection quirk is connected with the tempering road, ground of each bottom, carbonization chamber; Also be provided with waste heat and ignite on the headwall of carbonization chamber, quirk and auxiliary chamber are interconnected with connecting; On igniting and connect quirk, waste heat is equipped with the plate of control quirk break-make.
2, Contiuum type coke furnace as claimed in claim 1 is characterized in that bottom, carbonization chamber is provided with tempering road, ground, and the middle part is provided with plane quirk and vertical quirk, and the top is the furnace roof combustion chamber; Tempering road, ground, plane quirk, vertical quirk and furnace roof combustion chamber layouts that be parallel to each other, and along carbonization chamber longitudinal extension, perforation rear and front end, carbonization chamber; Vertically be communicated with by quirk on the center with near quirk on the side wall of carbonization chamber side walls between quirk and the plane quirk, furnace roof combustion chamber and tempering road, ground are by being communicated with near quirk under the side wall of carbonization chamber side walls; Tempering road, ground is connected with the series connection quirk by the outlet of tempering road, ground, also is provided with drainageway below tempering road, ground; The indoor coal seam of carbonization adopts refractory brick interlayer and each quirk and auxiliary chamber to separate.
3, as claim 1,2 described Contiuum type coke furnaces, it is characterized in that being provided with the furnace roof combustion chamber is communicated with the carbonization chamber side walls at place with quirk under the side wall on quirk control punch and barrier down, being provided with in the side wall upper end matches with barrier is used to cut off the plate of quirk path.
4,, it is characterized in that being provided with in the coal seam, carbonization chamber the separate rising quirk that is connected with the furnace roof combustion chamber as claim 1,2 described Contiuum type coke furnaces.
5,, it is characterized in that between bottom coal seam below the quirk of plane and plane quirk, adopting the solidified sulfur fuel layer that can prevent coking coal self burnup and ashing that coal seam and quirk are isolated as claim 1,2 described Contiuum type coke furnaces; Solidified sulfur fuel is to adopt inferior fuel such as colliery powder, coal slime, coke powder end and lime or ground dolomite formulated, and its proportioning is that bastard coal grinds stone flour 30%, coal slime 30%, coke powder end 25%, lime powder (or ground dolomite) 15%.
6, a kind of coking process of Contiuum type coke furnace as claimed in claim 1, it is characterized in that when coalingging the heat conduction steel pipe given and bury, the heat conduction steel pipe divides the long and short two kind, long and short heat conduction steel pipe is connected the furnace roof combustion chamber respectively with tempering road, ground and plane quirk, formed the upper and lower quirk of steel pipe in the coal seam; Coking chamber is extracted the heat conduction steel pipe out by the furnace roof hole after reaching more than 500 degree, and adopts the sulphur-fixing agent that can prevent the coking coal ashing that the duct that steel pipe extraction back stays in the coal seam is filled up; After the outlet temperature of coking is finished, insert bilayer sleeve by the furnace roof hole, and feed the aqueous vapor quenching; Sulphur-fixing agent adopts the coke powder end formulated with Wingdale or rhombspar.
7, coking process as claimed in claim 5, the proportioning that it is characterized in that sulphur-fixing agent is coke powder end 70%, lime powder (or ground dolomite) 30%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 94100971 CN1092457A (en) | 1994-02-04 | 1994-02-04 | Contiuum type coke furnace and coking process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94100971 CN1092457A (en) | 1994-02-04 | 1994-02-04 | Contiuum type coke furnace and coking process thereof |
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| CN1092457A true CN1092457A (en) | 1994-09-21 |
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| CN 94100971 Pending CN1092457A (en) | 1994-02-04 | 1994-02-04 | Contiuum type coke furnace and coking process thereof |
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