CN105176551A - Gas distribution device for oil shale retorting furnace - Google Patents
Gas distribution device for oil shale retorting furnace Download PDFInfo
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- CN105176551A CN105176551A CN201510638502.1A CN201510638502A CN105176551A CN 105176551 A CN105176551 A CN 105176551A CN 201510638502 A CN201510638502 A CN 201510638502A CN 105176551 A CN105176551 A CN 105176551A
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Abstract
The invention discloses a gas distribution device for an oil shale retorting furnace. The gas distribution device is characterized in that a central gas distribution pipe is arranged in a combustion chamber of a furnace wall, the lower end of the central gas distribution pipe is a gas inlet, four layers of gas flow spray holes are sequentially formed in the central gas distribution pipe from bottom to top, each layer of gas flow spray holes comprise 12-20 gas flow spray holes, every two adjacent layers of the gas flow spray holes are formed in a staggered manner, four layers of gas distribution pipes are sequentially arranged on the central gas distribution pipe from bottom to top, each layer of gas distribution pipes comprise 6-10 evenly-distributed gas distribution pipes, every two adjacent layers of the gas distribution pipes are arranged in a staggered manner, gas spray holes inclined downwards are formed in the gas distribution pipes, and a cross guide vane is arranged in a section of bent pipe with an included angle of 90 degrees at the lower end of the central gas distribution pipe. The gas distribution device has the advantages that the structure is reasonable, gas distribution in the retorting furnace is even, sufficient and complete retorting is realized, the yield is high and the like.
Description
Technical field
The present invention relates to carbonization furnace technical field, specifically, is a kind of carbonization furnace distribution device.
Background technology
Oil shale distillation is under the condition of isolated air, is heated to temperature 450 DEG C ~ 550 DEG C, makes its pyrolysis, generates shale oil, shale semicockes and pyrolysis gas.Oil shale distillation, once also referred to as resinous shale low-temperature pyrolysis, is different from the 700 DEG C of destructive distillation of middle temperature and high temperature 900 DEG C of destructive distillation of coal and resinous shale.
At present, the structure of the distribution device of domestic conventional dry furnace is: arrange a circular channel at the periphery of gas retort, thermal barrier air-flow enters from the outside of circular channel, the inner side of circular channel has some air-flow spray orifices, after thermal barrier air-flow enters circular channel, then sprayed in stove by air-flow spray orifice, the thermal barrier air-flow sprayed in stove by air-flow spray orifice is mixed by destructive distillation material with in stove, delivered heat is given by destructive distillation material, after making to be reached certain temperature by destructive distillation material, realizes destructive distillation.Because thermal barrier air-flow needs to pass through the bed of material after the ejection of air-flow spray orifice, therefore the heat that obtains apart near material of distance spray orifice is more, heat up comparatively fast, higher, the heat obtained away from the material of spray orifice is then less, heat up more slowly, lower, facts have proved that the material of distance more than spray orifice 1.4m directly contacts with thermal barrier air-flow hardly, the mutual conduction between material can only be relied on to absorb heat.The heating degree of the material therefore on the same cross section of gas retort is very uneven, and the distribution in temperature field is also very uneven, and distance spray orifice near material is by destructive distillation, and distance spray orifice material far away, then not by destructive distillation, greatly reduces the efficiency of destructive distillation.Due to this reason, the diameter of conventional dry furnace is all at below 2.8m, and maximum day output more than 100t, can not limit gas retort and keep the large-scale development.The internal diameter of such as Fushun type retort is 2.6m, and day output is 80 ~ 100t.
Summary of the invention
The object of the invention is, circular channel is used to cause the heating degree of material on same cross section uneven as gas distribution structure in order to solve conventional dry furnace, thermo parameters method is uneven, air-flow traverse distance is limited, the defects such as gas retort processing power is restricted, there is provided a kind of rational in infrastructure, uniform air distribution in gas retort, the carbonization furnace distribution device that destructive distillation fully, complete, output is high.
The technical scheme realizing goal of the invention employing is, a kind of carbonization furnace distribution device, it is characterized in that: it comprises furnace wall, center gas-distribution pipe is built-in with at the burner hearth of furnace wall, the lower end of center gas-distribution pipe is inlet mouth, center gas-distribution pipe sets gradually four layers of air-flow spray orifice from bottom to up, every layer of air-flow spray orifice centrally Guan Yizhou is evenly provided with 12-20 air-flow spray orifice, make all there is an air-flow spray orifice immediately below every layer of every root gas distribution pipe with immediately below the angle centre of adjacent two gas distribution pipes, adjacent two layers air-flow spray orifice is in being staggered, that is the first layer air-flow spray orifice from bottom to up arranges identical with third layer air-flow spray orifice, second layer air-flow spray orifice arranges identical with four layers, center gas-distribution pipe sets gradually four layers of gas distribution pipe from bottom to up, every layer of gas distribution pipe is all made up of the gas distribution pipe that 6-10 root is uniform, adjacent two layers gas distribution pipe is in being staggered, on every root gas distribution pipe, both sides are respectively according to waiting ring method of section to arrange 10-20 gas orifice obliquely, gas orifice from inside to outside increases successively along burner hearth radial direction, that is the downward gas orifice of the first layer gas distribution pipe from bottom to up arranges identical with the downward gas orifice of third layer gas distribution pipe, the downward gas orifice of second layer gas distribution pipe arranges identical with the 4th layer of downward gas orifice of gas distribution pipe, the first layer gas distribution pipe is between the first layer air-flow spray orifice and second layer air-flow spray orifice, second layer gas distribution pipe is between second layer air-flow spray orifice and third layer air-flow spray orifice, third layer gas distribution pipe is between third layer air-flow spray orifice and the 4th layer of air-flow spray orifice, 4th layer of gas distribution pipe is positioned at the top of the 4th layer of air-flow spray orifice, the one section of bend pipe in gas-distribution pipe lower end, center being 90 ° of angles is built-in with cruciform stator.
The length overcenter gas-distribution pipe lower end of described cruciform stator be 90 ° of angles one section of bend pipe on level, right vertical plane distance be a.
Gas retort distribution device of the present invention, owing to adopting multi-layer intercrossed gas distribution mode rational in infrastructure, makes uniform air distribution in gas retort, and destructive distillation fully, complete, output is high.Bright through theoretical prediction table, when the internal diameter of gas retort reaches 3.3m, the oily yield of gas retort can reach more than 90%, and the day output of gas retort can reach 300t; When the internal diameter of gas retort reaches 3.8m, the day output of gas retort can reach more than 500t; When the internal diameter of gas retort reaches 5m, gas retort day output can reach about 1000t.This Novel cloth device of air is to the maximization of gas retort, to reducing specific investment that gas retort builds, all significant to reduction running cost.
Accompanying drawing explanation
Fig. 1 is gas retort distribution device structure cross-sectional schematic of the present invention;
Fig. 2 is L-L in Fig. 1 (A-A) cross-sectional schematic;
Fig. 3 is H-H (B-B) cross-sectional schematic in Fig. 1;
Fig. 4 is C-C cross-sectional schematic in Fig. 1;
Fig. 5 is J-J in Fig. 1 (D-D) cross-sectional schematic;
Fig. 6 is K-K in Fig. 1 (E-E) cross-sectional schematic;
Fig. 7 is F-F cross-sectional schematic in Fig. 1.
In figure: in figure: 1 furnace wall, 2 burner hearths, 3 inlet mouths, 4 cruciform stators, 5 center gas-distribution pipes, 6 the first layer gas distribution pipes, 7 air-flow spray orifices, 8 downward gas orifices, 12 second layer gas distribution pipes, 13 third layer gas distribution pipes, 14 the 4th layers of gas distribution pipe.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and the invention will be further described with reference to accompanying drawing.
With reference to Fig. 1-Fig. 7, gas retort distribution device of the present invention comprises furnace wall 1, is built-in with center gas-distribution pipe 5 at the burner hearth 2 of furnace wall 1, and the lower end of center gas-distribution pipe 5 is inlet mouth 3.Center gas-distribution pipe 5 sets gradually four layers of air-flow spray orifice from bottom to up, every layer of air-flow spray orifice centrally Guan Yizhou is evenly provided with 12-20 air-flow spray orifice 7, make all there is an air-flow spray orifice immediately below every layer of every root gas distribution pipe with immediately below the angle of adjacent two gas distribution pipes, adjacent two layers air-flow spray orifice in being staggered, that is the first layer air-flow spray orifice from bottom to up and third layer air-flow spray orifice arrange identical, second layer air-flow spray orifice and four layers arrange identical.Center gas-distribution pipe 5 sets gradually four layers of gas distribution pipe from bottom to up, every layer of gas distribution pipe is all made up of the gas distribution pipe that 6-10 root is uniform, adjacent two layers gas distribution pipe is in being staggered, on every layer of every root gas distribution pipe, both sides are respectively according to waiting ring method of section to arrange 10-20 gas orifice 8 obliquely, gas orifice from inside to outside increases successively along burner hearth radial direction, that is the first layer gas distribution pipe 6 from bottom to up downwards gas orifice arrange identical with the downward gas orifice of third layer gas distribution pipe 13, second layer gas distribution pipe 12 downwards gas orifice and the downward gas orifice of the 4th layer of gas distribution pipe 14 arranges identical, the first layer gas distribution pipe 6 is between the first layer air-flow spray orifice and second layer air-flow spray orifice, second layer gas distribution pipe 12 is between second layer air-flow spray orifice and third layer air-flow spray orifice, third layer gas distribution pipe 13 is between third layer air-flow spray orifice and the 4th layer of air-flow spray orifice, 4th layer of gas distribution pipe 14 is positioned at the top of the 4th layer of air-flow spray orifice, the one section of bend pipe in center gas-distribution pipe 5 lower end being 90 ° of angles is built-in with cruciform stator 4,
Length overcenter gas-distribution pipe 5 lower end of described cruciform stator 4 be 90 ° of angles one section of bend pipe on level, right vertical plane distance be a.
During work: thermal barrier air-flow, from the inlet mouth 3 of center gas-distribution pipe 5, enters after center gas-distribution pipe 5 through cruciform stator 4, a part of gas sprays into the burner hearth 2 of gas retort by layer air-flow spray orifice of four on center gas-distribution pipe 5; A part gas enter the four layers of gas distribution pipe be connected with center gas-distribution pipe 5, then by the both sides on four layers of gas-distribution pipe obliquely gas orifice 8 spray into the burner hearth 2 of gas retort.The distance of passing through is needed greatly to shorten by the thermal barrier air-flow that evenly gas distribution makes each air-flow spray orifice spray layer by layer, the air-flow sprayed in burner hearth 2 is made to form mixed flow, thus make the air-flow everywhere of same section, state that temperature is in relative equilibrium, make the material in burner hearth 2 obtain balanced destructive distillation.Any adjacent two layers gas distribution pipe becomes cross arrangement to enhance the mixing of material in gas retort burner hearth 2 on burner hearth horizontal section, material is distributed more even, makes destructive distillation fully, completely.The thermal barrier air-flow entered from the inlet mouth 3 of center gas-distribution pipe 5 is divided into equal four parts by cruciform stator 4, enters center gas-distribution pipe 5 more uniformly, is distributed to uniformly in the four layers of gas distribution pipe be connected with center gas-distribution pipe 5 simultaneously.Under the condition that design and construction allow, prolongation cruciform stator 4 top and overcenter gas-distribution pipe 5 lower end, bottom are the distance a of one section of upper and lower plane of bend pipe of 90 ° of angles as far as possible, air-flow mixing in center gas-distribution pipe 5 can be made more abundant, and gas distribution also will be more even.The air-flow spray orifice 8 that the both sides of the gas distribution pipe obliquely position of 45 ° are arranged respectively can prevent material from entering in gas distribution pipe.
Theoretical calculate shows, when the internal diameter of gas retort reaches 3.3m, the oily yield of gas retort can reach more than 90%, and the day output of gas retort can reach 300t; When the internal diameter of gas retort reaches 3.8m, the day output of gas retort can reach more than 500t; When the internal diameter of gas retort reaches 5m, gas retort day output can reach about 1000t.This Novel cloth device of air is to the maximization of gas retort, to reducing specific investment that gas retort builds, all significant to reduction running cost.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a carbonization furnace distribution device, it is characterized in that: it comprises furnace wall, center gas-distribution pipe is built-in with at the burner hearth of furnace wall, the lower end of center gas-distribution pipe is inlet mouth, center gas-distribution pipe sets gradually four layers of air-flow spray orifice from bottom to up, every layer of air-flow spray orifice centrally Guan Yizhou is evenly provided with 12-20 air-flow spray orifice, make all there is an air-flow spray orifice immediately below every layer of every root gas distribution pipe with immediately below the angle centre of adjacent two gas distribution pipes, adjacent two layers air-flow spray orifice is in being staggered, that is the first layer air-flow spray orifice from bottom to up arranges identical with third layer air-flow spray orifice, second layer air-flow spray orifice arranges identical with four layers, center gas-distribution pipe sets gradually four layers of gas distribution pipe from bottom to up, every layer of gas distribution pipe is all made up of the gas distribution pipe that 6-10 root is uniform, adjacent two layers gas distribution pipe is in being staggered, on every root gas distribution pipe, both sides are respectively according to waiting ring method of section to arrange 10-20 gas orifice obliquely, gas orifice from inside to outside increases successively along burner hearth radial direction, that is the downward gas orifice of the first layer gas distribution pipe from bottom to up arranges identical with the downward gas orifice of third layer gas distribution pipe, the downward gas orifice of second layer gas distribution pipe arranges identical with the 4th layer of downward gas orifice of gas distribution pipe, the first layer gas distribution pipe is between the first layer air-flow spray orifice and second layer air-flow spray orifice, second layer gas distribution pipe is between second layer air-flow spray orifice and third layer air-flow spray orifice, third layer gas distribution pipe is between third layer air-flow spray orifice and the 4th layer of air-flow spray orifice, 4th layer of gas distribution pipe is positioned at the top of the 4th layer of air-flow spray orifice, the one section of bend pipe in gas-distribution pipe lower end, center being 90 ° of angles is built-in with cruciform stator.
2. a kind of carbonization furnace distribution device according to claim 1, is characterized in that, the length overcenter gas-distribution pipe lower end of described cruciform stator be 90 ° of angles one section of bend pipe on level, right vertical plane distance be a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510638502.1A CN105176551A (en) | 2015-09-30 | 2015-09-30 | Gas distribution device for oil shale retorting furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510638502.1A CN105176551A (en) | 2015-09-30 | 2015-09-30 | Gas distribution device for oil shale retorting furnace |
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| CN201510638502.1A Pending CN105176551A (en) | 2015-09-30 | 2015-09-30 | Gas distribution device for oil shale retorting furnace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107502379A (en) * | 2017-10-13 | 2017-12-22 | 辽宁成大股份有限公司 | A kind of gas distribution equipment for gas complete alternation long flame coal carbonization furnace |
| CN107541228A (en) * | 2017-10-23 | 2018-01-05 | 东北电力大学 | A kind of powdered dry distillation apparatus for oil shale of gas-solid body dual heating type |
| CN107676781A (en) * | 2017-05-17 | 2018-02-09 | 温岭市百然机械有限公司 | Pressure mixing structure applied to low nitrogen short flame burner |
| CN109609157A (en) * | 2019-01-25 | 2019-04-12 | 湖北和瑞能源科技股份有限公司 | A kind of high efficiency biomass pyrogenation gasification furnace |
| CN117682754A (en) * | 2023-12-04 | 2024-03-12 | 湖北嘉辐达节能科技股份有限公司 | Glass wool centrifugal fiberizer |
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| JPS5765787A (en) * | 1980-10-08 | 1982-04-21 | Nippon Kokan Kk <Nkk> | Dry distillation and gasification of coal by using vertical multi-stage shaft furnace |
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| JPS5765787A (en) * | 1980-10-08 | 1982-04-21 | Nippon Kokan Kk <Nkk> | Dry distillation and gasification of coal by using vertical multi-stage shaft furnace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676781A (en) * | 2017-05-17 | 2018-02-09 | 温岭市百然机械有限公司 | Pressure mixing structure applied to low nitrogen short flame burner |
| CN107502379A (en) * | 2017-10-13 | 2017-12-22 | 辽宁成大股份有限公司 | A kind of gas distribution equipment for gas complete alternation long flame coal carbonization furnace |
| CN107541228A (en) * | 2017-10-23 | 2018-01-05 | 东北电力大学 | A kind of powdered dry distillation apparatus for oil shale of gas-solid body dual heating type |
| CN109609157A (en) * | 2019-01-25 | 2019-04-12 | 湖北和瑞能源科技股份有限公司 | A kind of high efficiency biomass pyrogenation gasification furnace |
| CN117682754A (en) * | 2023-12-04 | 2024-03-12 | 湖北嘉辐达节能科技股份有限公司 | Glass wool centrifugal fiberizer |
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Application publication date: 20151223 |