CN107936999A - The Bidirectional heating system and heating means of external-heat low order fine coal continuous shale oven - Google Patents
The Bidirectional heating system and heating means of external-heat low order fine coal continuous shale oven Download PDFInfo
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- CN107936999A CN107936999A CN201711401973.6A CN201711401973A CN107936999A CN 107936999 A CN107936999 A CN 107936999A CN 201711401973 A CN201711401973 A CN 201711401973A CN 107936999 A CN107936999 A CN 107936999A
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- heating
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 66
- 239000003245 coal Substances 0.000 title claims abstract description 25
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 15
- 230000001172 regenerating effect Effects 0.000 claims abstract description 74
- 239000003034 coal gas Substances 0.000 claims abstract description 30
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 206010022000 influenza Diseases 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 102
- 238000005338 heat storage Methods 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000002912 waste gas Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 4
- 239000011449 brick Substances 0.000 claims description 3
- 238000003763 carbonization Methods 0.000 abstract description 8
- 239000000571 coke Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
- C10B21/12—Burners
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
- C10B21/14—Devices for reversing the draught
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Air Supply (AREA)
- Furnace Details (AREA)
Abstract
The present invention relates to a kind of the Bidirectional heating system and heating means of external-heat low order fine coal continuous shale oven, combustion chamber is by multiple flues, the upper horizontal road at the top of flue, the lower horizontal road composition arranged on flue bottom；The top and bottom of each flue are equipped with coal gas burner, and coal gas burner connects gas pipe respectively；The one end in upper horizontal road is connected with the top of upper regenerative chamber, and regenerative chamber gas passage is set on the outside of upper regenerative chamber；The one end in lower horizontal road is connected with the bottom of lower regenerative chamber, and regenerative chamber gas passage is set on the outside of lower regenerative chamber.The present invention can individually adjust the heating load of at the top of each flue or bottom, so as to improve uniformity of the carbonization chamber length to heating；Suitable temperature gradient can be formed by the time for adjusting exchange cycle twice；And air can be avoided to leak problem with heating gas string.
Description
Technical field
The present invention relates to low temperature distillation technical field in low-order coal, more particularly to a kind of external-heat low order fine coal continuous carbonization
The Bidirectional heating system and heating means of stove.
Background technology
Gas retort is made of carbonization chamber, combustion chamber and regenerative chamber, with reference to the production of external-heat low order fine coal continuous shale oven
Technological requirement, destructive distillation oven carbonization chamber are divided into dryer section, retort section and cooling section under by upper, need to supply in retort section and dryer section
Heat.Destructive distillation is different with dry required temperature, and 800~900 DEG C of temperature of furnace wall needed for retort section, dryer section required temperature is no more than
300℃.In addition, 5~8m of retort section height forms temperature gradient, it is necessary to the high upper temp of temperature of lower is low that is, on from lower.And
Require on same level absolute altitude that temperature is as far as possible consistent on carbonization chamber length direction, avoid heating uneven.
Used mode of heating is usually when externally heated retort oven produces semicoke：Raw coke oven gas and sky are preheated by regenerative chamber
Gas, in a manner of upper and lower heating exchanges, i.e., then air and raw coke oven gas are passed through by entering horizontal gas road after regenerative chamber accumulation of heat
Coal gas and air lance carry out combustion or lower combustion, and this heating exchanged form has the following disadvantages：
1) combustion flame of heating gas and air at the flue close to regenerative chamber, at remote regenerative chamber flue
Combustion flame it is big, cause to heat on carbonization chamber length direction uneven；
2) air and heating gas enter the horizontal road of up/down after exchanging heat at the same time by regenerative chamber, and air and heating gas exist
Separated among horizontal road by partition wall, burning of meeting after flue is entered, but often occur air and heating in actual production
The situation that coal gas is gone here and there leakage in horizontal road, burns in horizontal air flue, easily leads to deflagration accident；
3) heating intensity of each flue can not be adjusted individually, can only adjust the heating load of entire row flue, adjust hand
The effect unobvious of section.
The content of the invention
, can be single the present invention provides a kind of the Bidirectional heating system and heating means of external-heat low order fine coal continuous shale oven
The heating load of at the top of each flue or bottom is solely adjusted, so as to improve uniformity of the carbonization chamber length to heating；By adjusting two
The time of secondary exchange cycle can form suitable temperature gradient；And air can be avoided to leak problem with heating gas string.
In order to achieve the above object, the present invention is realized using following technical scheme：
The Bidirectional heating system of external-heat low order fine coal continuous shale oven, including the combustion chamber being disposed adjacent and regenerative chamber,
The regenerative chamber is made of upper regenerative chamber and lower regenerative chamber, and heat storage is set respectively in 2 regenerative chambers；The combustion chamber is by multiple vertical
Quirk, at the top of the flue and coupled logical upper horizontal road, arranged on flue bottom and coupled logical lower level
Road forms；The top and bottom of each flue are equipped with coal gas burner, and coal gas burner connects one end of gas pipe, arranged on vertical fire
The other end of the gas pipe of road bottom is connected after being passed down through lower horizontal road and sole plate with exterior coal gas steam line, is arranged on
The other end of gas pipe at the top of flue is connected after being upward through horizontal road and furnace roof with exterior coal gas steam line；Coal gas
Pipe can translate therewith in furnace expansion；The one end in upper horizontal road is connected with the top of upper regenerative chamber, the outside of upper regenerative chamber
If upper regenerative chamber gas passage；The one end in lower horizontal road is connected with the bottom of lower regenerative chamber, and accumulation of heat is set on the outside of lower regenerative chamber
Room gas passage.
Regulating cock or regulating valve are set on the gas pipe stretched out outside sole plate or furnace roof.
The heat storage is checker brick or heat exchanger.
The sole plate passes through gas pipe and lower horizontal road bottom with lower horizontal road bottom difference perforate for corresponding gas pipe
Gap between portion's perforate is sealed by sealing cord；The hole opened up on sole plate is the elongated hole along furnace expansion direction；Stove
Top sets preformed hole for corresponding gas pipe by the way that the gap between gas pipe and furnace roof preformed hole is sealed by sealing cord.
The heating means of external-heat low order fine coal continuous shale oven based on the Bidirectional heating system, including following step
Suddenly：
1) in first exchange cycle of gas retort, the air of lower regenerative chamber is entered from lower regenerative chamber gas passage, through lower storage
Enter lower horizontal road after the indoor heat storage heating of heat；The gas pipe of flue bottom is passed through heating gas, the air after preheating
Burn with heating gas at the coal gas burner of flue bottom, the flame produced after burning is vertical above corresponding coal gas burner
It is elongated in quirk, the hot waste gas after burning enters upper regenerative chamber after collecting by upper horizontal road, the indoor storage of accumulation of heat in heating
Hot body, the exhaust gas after heat exchange are discharged from upper regenerative chamber gas passage, are arranged eventually through outside chimney；
2) in second exchange cycle of gas retort, gas flow direction changes, and enters upper storage from upper regenerative chamber gas passage
The air in hot cell enters upper horizontal road after heat storage exchanges heat and obtains heat, is passed through coal in the gas pipe at the top of flue at this time
Gas, air after preheating and heating gas meet downward burning at the coal gas burner at the top of flue, the hot waste gas after burning
Flowed downward by each flue, regenerative chamber under entering after collecting in lower horizontal road, heats the lower indoor heat storage of accumulation of heat, heat exchange
Exhaust gas afterwards is discharged from lower regenerative chamber gas passage, is arranged eventually through outside chimney；
3) alternately, the heating process of gas retort is completed in so circulation for step 1) and step 2).
The coal supply tolerance of each bottom or top gas pipe can be individually adjusted by regulating cock or regulating valve, so as to adjust
Save the heating load of each flue.
The time of first exchange cycle of gas retort and the second exchange cycle of gas retort can be adjusted respectively according to furnace temperature, be met
The temperature gradient of production requirement.
Compared with prior art, the beneficial effects of the invention are as follows：
1) heating gas and air can be avoided to go here and there leakage in horizontal road, effectively prevent the generation of confined explosion's accident；
2) by individually adjusting the coal supply tolerance of each bottom or top gas pipe, can to each flue heating load into
Row is adjusted, the uniformity so as to fulfill carbonization chamber length to heating；
3) by adjusting the time of two exchange cycles, it is effectively formed external-heat low order fine coal continuous shale oven destructive distillation production
Required temperature gradient.
Brief description of the drawings
Fig. 1 is the structure diagram one of the Bidirectional heating system of external-heat low order fine coal continuous shale oven of the present invention.
Fig. 2 is the A portions enlarged drawing in Fig. 1.
Gas flow schematic diagram when Fig. 3 is the first exchange cycle of coke dry quenching furnace of the present invention (upper combustion).
Gas flow schematic diagram when Fig. 4 is the second exchange cycle of coke dry quenching furnace of the present invention (exchanging downwards).
In figure：1. 3. times regenerative chamber gas passages of regenerative chamber, 4. times regenerative chambers 5. adjust rotation on regenerative chamber gas passage 2. on
11. coal gas burner of horizontal 10. flue of road, 12. furnace roof under horizontal road 9. on plug or 6. gas pipe of regulating valve, 7. sole plate 8.
13. sealing cord
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
As shown in Figure 1 and Figure 2, the Bidirectional heating system of external-heat low order fine coal continuous shale oven of the present invention, including phase
The combustion chamber and regenerative chamber, the regenerative chamber that neighbour is set are made of upper regenerative chamber 2 and lower regenerative chamber 4, are divided in 2 regenerative chambers 2,4
Heat storage is not set；The combustion chamber by multiple flues 10, arranged on the top of flue 10 and coupled logical upper horizontal road 8,
Formed arranged on 10 bottom of flue and coupled logical lower horizontal road 9；The top and bottom of each flue 10 are equipped with coal
Gas burner 11, coal gas burner 11 connect one end of gas pipe 6, and the other end arranged on the gas pipe 6 of 10 bottom of flue is worn downwards
Be connected after crossing down horizontal road 9 and sole plate 7 with exterior coal gas steam line, arranged on the top of flue 10 gas pipe 6 it is another
One end is connected after being upward through horizontal road 8 and furnace roof 12 with exterior coal gas steam line；Gas pipe 6 can be in furnace expansion
Translate therewith；The one end in upper horizontal road 8 is connected with the top of upper regenerative chamber 2, and the outside of upper regenerative chamber 2 sets regenerative chamber gas and leads to
Road 1；The one end in lower horizontal road 9 is connected with the bottom of lower regenerative chamber 4, and regenerative chamber gas passage 3 is set in the outside of lower regenerative chamber 4.
Regulating cock or regulating valve 5 are set on the gas pipe 6 stretched out outside sole plate 7 or furnace roof 12.
The heat storage is checker brick or heat exchanger.
The sole plate 7 passes through gas pipe 6 and lower level with lower horizontal 9 bottom of road difference perforate for corresponding gas pipe 6
Gap between 9 bottom opening of road is sealed by sealing cord 13；The hole opened up on sole plate 7 is the length along furnace expansion direction
Shape hole；Furnace roof 12 sets preformed hole for corresponding gas pipe 6 by the way that the gap between gas pipe 6 and furnace roof preformed hole passes through sealing cord
13 sealings.
The heating means of external-heat low order fine coal continuous shale oven based on the Bidirectional heating system, including following step
Suddenly：
1) as shown in figure 3, in first exchange cycle of gas retort, lower regenerative chamber 4 is entered from lower regenerative chamber gas passage 3
Air, enters lower horizontal road 9 after the heat storage heating in lower regenerative chamber 4；The gas pipe 6 of 10 bottom of flue is passed through heating coal
Gas, the air after preheating burn with heating gas at the coal gas burner 11 of 10 bottom of flue, and the flame produced after burning exists
It is elongated in the flue 10 of the corresponding top of coal gas burner 11, the hot waste gas after burning enters upper after being collected by upper horizontal road 8
Regenerative chamber 2, the heat storage in heating in regenerative chamber 2, the exhaust gas after heat exchange are discharged from upper regenerative chamber gas passage 1, eventually through
Arranged outside chimney；
2) as shown in figure 4, in second exchange cycle of gas retort, gas flow direction changes, and leads to from upper regenerative chamber gas
The air that road 1 enters upper regenerative chamber 2 enters upper horizontal road 8 after heat storage exchanges heat and obtains heat, at this time at the top of flue 10
Coal gas is passed through in gas pipe 6, the air after preheating meets downwards with heating gas at the coal gas burner 11 at the top of flue 10
Burning, the hot waste gas after burning are flowed downward by each flue 10, regenerative chamber 4 under entering after collecting in lower horizontal road 9, heating
Heat storage in lower regenerative chamber 4, the exhaust gas after heat exchange are discharged from lower regenerative chamber gas passage 3, are arranged eventually through outside chimney；
3) alternately, the heating process of gas retort is completed in so circulation for step 1) and step 2).
The coal supply tolerance of each bottom or top gas pipe 6 can be individually adjusted by regulating cock or regulating valve 5, so that
Adjust the heating load of each flue 10.
The time of first exchange cycle of gas retort and the second exchange cycle of gas retort can be adjusted respectively according to furnace temperature, be met
The temperature gradient of production requirement.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. the Bidirectional heating system of external-heat low order fine coal continuous shale oven, including the combustion chamber being disposed adjacent and regenerative chamber, institute
State regenerative chamber to be made of upper regenerative chamber and lower regenerative chamber, heat storage is set respectively in 2 regenerative chambers；It is characterized in that, the burning
Room by multiple flues, at the top of flue and coupled logical upper horizontal road, arranged on flue bottom and coupled
Logical lower horizontal road composition；The top and bottom of each flue are equipped with coal gas burner, and coal gas burner connects the one of gas pipe
End, is passed down through behind lower horizontal road and sole plate and exterior coal gas air supply pipe arranged on the other end of the gas pipe of flue bottom
Road connects, and the other end of the gas pipe at the top of flue is upward through behind upper horizontal road and furnace roof and exterior coal gas air supply pipe
Road connects；Gas pipe can translate therewith in furnace expansion；The one end in upper horizontal road is connected with the top of upper regenerative chamber, upper storage
Regenerative chamber gas passage is set on the outside of hot cell；The one end in lower horizontal road is connected with the bottom of lower regenerative chamber, outside lower regenerative chamber
Set regenerative chamber gas passage in side.
2. the Bidirectional heating system of external-heat low order fine coal continuous shale oven according to claim 1, it is characterised in that stretch
Regulating cock or regulating valve are set on the gas pipe gone out outside sole plate or furnace roof.
3. the Bidirectional heating system of external-heat low order fine coal continuous shale oven according to claim 1, it is characterised in that institute
It is checker brick or heat exchanger to state heat storage.
4. the Bidirectional heating system of external-heat low order fine coal continuous shale oven according to claim 1, it is characterised in that institute
State sole plate and supply corresponding gas pipe by between gas pipe and lower horizontal road bottom opening with lower horizontal road bottom difference perforate
Gap sealed by sealing cord；The hole opened up on sole plate is the elongated hole along furnace expansion direction；Furnace roof sets preformed hole
For corresponding gas pipe by the way that the gap between gas pipe and furnace roof preformed hole is sealed by sealing cord.
5. the heating means of the external-heat low order fine coal continuous shale oven based on Bidirectional heating system described in claim 1, it is special
Sign is, includes the following steps：
1) in first exchange cycle of gas retort, the air of lower regenerative chamber is entered from lower regenerative chamber gas passage, through lower regenerative chamber
Enter lower horizontal road after interior heat storage heating；The gas pipe of flue bottom is passed through heating gas, and the air after preheating is with adding
Heating gas burns at the coal gas burner of flue bottom, flue of the flame produced after burning above corresponding coal gas burner
Inside it is elongated, the hot waste gas after burning enters upper regenerative chamber after collecting by upper horizontal road, the indoor heat storage of accumulation of heat in heating,
Exhaust gas after heat exchange is discharged from upper regenerative chamber gas passage, is arranged eventually through outside chimney；
2) in second exchange cycle of gas retort, gas flow direction changes, and enters upper regenerative chamber from upper regenerative chamber gas passage
Air through heat storage exchange heat obtain heat after enter upper horizontal road, coal gas is passed through in the gas pipe at the top of flue at this time, in advance
Air after heat and heating gas meet downward burning at the coal gas burner at the top of flue, and the hot waste gas after burning passes through each
Flue flows downward, regenerative chamber under entering after collecting in lower horizontal road, heats the lower indoor heat storage of accumulation of heat, useless after heat exchange
Gas is discharged from lower regenerative chamber gas passage, is arranged eventually through outside chimney；
3) alternately, the heating process of gas retort is completed in so circulation for step 1) and step 2).
6. the heating means of external-heat low order fine coal continuous shale oven according to claim 5, it is characterised in that pass through tune
Section cock or regulating valve can individually adjust the coal supply tolerance of each bottom or top gas pipe, so as to adjust each flue
Heating load.
7. the heating means of external-heat low order fine coal continuous shale oven according to claim 5, it is characterised in that gas retort
The time of the second exchange cycle of first exchange cycle and gas retort can be adjusted respectively according to furnace temperature, meet the temperature of production requirement
Gradient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401973.6A CN107936999B (en) | 2017-12-22 | 2017-12-22 | Bidirectional heating system and heating method of external heating type low-order pulverized coal continuous carbonization furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711401973.6A CN107936999B (en) | 2017-12-22 | 2017-12-22 | Bidirectional heating system and heating method of external heating type low-order pulverized coal continuous carbonization furnace |
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| Publication Number | Publication Date |
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| CN107936999A true CN107936999A (en) | 2018-04-20 |
| CN107936999B CN107936999B (en) | 2024-03-19 |
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| CN201711401973.6A Active CN107936999B (en) | 2017-12-22 | 2017-12-22 | Bidirectional heating system and heating method of external heating type low-order pulverized coal continuous carbonization furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109913250A (en) * | 2019-03-11 | 2019-06-21 | 中冶焦耐(大连)工程技术有限公司 | A kind of upright furnace with Two-cuff Technique cell structure |
| CN115895688A (en) * | 2023-01-06 | 2023-04-04 | 中化二建集团有限公司 | Exchange transmission device and exchange transmission method capable of switching waste gas and air in linkage manner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109913250A (en) * | 2019-03-11 | 2019-06-21 | 中冶焦耐(大连)工程技术有限公司 | A kind of upright furnace with Two-cuff Technique cell structure |
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| CN115895688A (en) * | 2023-01-06 | 2023-04-04 | 中化二建集团有限公司 | Exchange transmission device and exchange transmission method capable of switching waste gas and air in linkage manner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107936999B (en) | 2024-03-19 |
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