CN203960118U - A kind of brown coal destructive distillation device - Google Patents
A kind of brown coal destructive distillation device Download PDFInfo
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- CN203960118U CN203960118U CN201420265358.2U CN201420265358U CN203960118U CN 203960118 U CN203960118 U CN 203960118U CN 201420265358 U CN201420265358 U CN 201420265358U CN 203960118 U CN203960118 U CN 203960118U
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- 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
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Abstract
The utility model relates to a kind of brown coal destructive distillation device.Related device comprises: gas retort that drying oven, external-heat are combined with thermal barrier, burn producer gas cleaning apparatus and semicoke is cooling with lifting gear etc.Utilize this device to carry out brown coal method for destructive distillation and dry heating for utilizing cyclic steam to carry out fluidisation to raw coal; Raw coal after raw coal after utilizing hot flue gas to preheating and drying carries out indirect heating and utilizes thermal barrier to preheating and drying carries out direct heating; A coal part after destructive distillation is as semicoke product, and a part is as circulation semicoke; Be thick Jiao and thin burnt by described circulation semicoke screening; Burnt thick Jiao is heated by finely-ground coke, the thick Jiaozhuo after heating is thermal barrier; The flue gas producing when required hot flue gas is from fuel combustion when the dry distillation of coal; When semicoke is cooling, produce steam for drying raw coal.Device of the present utility model adopts composite type to conduct heat, and brown coal carbonization energy consumption is lower, gas dust content is low, thermo-efficiency is high, coke powder ash content is low.
Description
Technical field
The utility model relates to coal retorting technique, is specifically related to a kind of brown coal destructive distillation device.
Background technology
Brown improving quality of coal by pyrolysis has a lot of technology both at home and abroad, but mainly comprises external heating type heat solution, solid heat carrier pyrolysis method, fast gas pyrolysis method etc.There is the problem that thermo-efficiency is low in external-heat pyrolysis brown coal wherein; There is the problems such as in coal gas, dust is large, semicoke ash content is large in solid thermal carriers; Gas fast pyrogenation exists that gas circulation amount is large, heating refrigeration cycle air heat efficiency is low, the problems such as dust is large in coal gas.There is no production technique and the device of extensive popularization.
Utility model content
For defect or the deficiency of prior art, the purpose of this utility model is to provide a kind of brown coal destructive distillation device.
For this reason, the brown coal destructive distillation device that the utility model provides comprises:
Drying oven, is fluidized bed steam drying oven, for raw coal preheating and drying: the steam producing while 1. utilizing semicoke product cooling carries out indirect heating to raw coal, and the direct fluidisation of steam cycle and the direct heating raw coal that 2. produce with raw coal preheating and drying;
Gas retort, is the solid of revolution stove of external-heat and internal heat type combination, carries out destructive distillation: the raw coal after 1. utilizing hot flue gas to preheating and drying carries out indirect heating for the coal to after preheating and drying, and raw coal after 2. utilizing thermal barrier to preheating and drying carries out direct heating; Coal after destructive distillation becomes semicoke rear portion as semicoke product, and a part is as circulation semicoke; ;
Semicoke screening plant, is drum-type screening plant, for by the screening of circulation semicoke being thick burnt and thin Jiao;
Burning stove, is direct heat oven, and for heating thick Jiao: fuel combustion is carried out direct heating to thick Jiao, the thick Jiaozhuo after heating is described thermal barrier, the flue gas of generation required hot flue gas during as the described dry distillation of coal;
Semi-coke cooling device, for the water pipe cooling and directly cooling semicoke water cooler combining of water spray indirectly, for cooling semicoke product.
Preferably, said apparatus also comprises:
Semicoke lifting gear is high temperature bucket elevator, for promoting thick Jiao;
Air-smoke heat replacing device is plate-type heat exchanger, for heat exchange between hot flue gas and air;
Described drying oven and the top of burning stove and be positioned at gas retort, and described drying oven, burn stove and be positioned at same level; Gas retort and granule ash separator are positioned at same level;
Raw coal after thermal barrier and preheating and drying enters from gas retort feed end, and semicoke and coal gas are exported from gas retort discharge end; The hot flue gas of fuel combustion with thick burnt burning following current heat exchange in stove; Go out to burn material in the hot flue gas of stove and gas retort and carry out the indirect countercurrent flow of external-heat; Go out the hot flue gas of gas retort and burn the required combustion air countercurrent flow of stove.
Preferably, said apparatus also comprises: coal gas particle dust-collecting equipment is intermittent type particle dust-collecting equipment, for removing the coal dust of coal gas.
Compared with prior art, the beneficial effects of the utility model are:
(1) the steam cycle fluidisation producing while brown coal being carried out to steam indirect heating and preheating and drying is dried combination, and nonflammable while ensureing brown coal oven dry, drying efficiency is high, main equipment movement-less part, energy-conservation, mechanical water does not enter coal gas system simultaneously, can also reclaim pyrolysis water.
(2) dried brown coal comprehensively heat by semicoke thermal barrier and external-heat, and a small amount of thermal barrier and external-heat add thermal bond and improve heat transfer efficiency, reduce dust.
(3) semicoke adds thermal recovery finely-ground coke and replaces coal gas, has saved coal gas, and finely-ground coke is reasonably utilized, and reduces the cost of pyrolysis heating fuel; Owing to there is no direct combustion heat carrier semicoke, this technique does not improve the ash content of semi-coke powder; Due to desulfurization of semi-coke powder, burning semi-coke powder is also conducive to environmental protection.
(4) dust in coal gas is by being arranged on the intermittent type granule ash separator dedusting at gas retort gas exit place, and the dust under removing is as process furnace fuel; Solve the problem of outlet of large dust content in brown coal pyrolytic process.
(5) cooling waste water in coal gas (interior water) is passed into and burns stove processing, make retort process not produce waste water, environmental.
(6) semicoke process furnace mainly burns by coke powder, concurrent heating semicoke, and flue gas tapping temperature is higher, not only for the outer heat of gas retort, and for combustion air preheating, heat gradient utilization, heat utilization efficiency is high.
(7) burn kiln gas and all walk external-heat chuck, be convenient to last dedusting, flue gas does not affect the quality of coal gas, coke powder and tar.
To sum up, brown coal destructive distillation device of the present utility model adopts composite type to conduct heat, make brown coal carbonization energy consumption compared with low, gas dust content is low, thermo-efficiency is high, environmental pollution is little, it is low to invest; Caloric power of gas is high, and tar yield is high, and coke powder ash content is low.
Brief description of the drawings
Below in conjunction with accompanying drawing and embodiment, the utility model is further explained in detail to explanation.
Fig. 1 is the brown coal destructive distillation device structural representation of embodiment.
Embodiment
Except as otherwise noted, the implication of each term described in the utility model is those skilled in the art's routine understanding.
Thin Jiao described in the utility model is less than or equal to the coke powder of 100 microns for particle diameter.The coke powder that thick Jiao described in the utility model is greater than 100 microns for particle diameter.Coal dust described in the utility model refers to that the particle diameter of fly-ash separator under removing is less than or equal to the coal dust of 100 microns.
The method of utilizing device of the present utility model to carry out brown coal destructive distillation comprises:
(1) raw coal preheating and drying: the steam producing while 1. utilizing semicoke product cooling carries out indirect heating to raw coal, and the direct fluidisation of steam cycle and the direct heating raw coal that 2. produce with raw coal preheating and drying;
(2) dry distillation of coal: the raw coal after 1. utilizing hot flue gas to preheating and drying carries out indirect heating, and raw coal after 2. utilizing thermal barrier to preheating and drying carries out direct heating; Coal after destructive distillation becomes semicoke rear portion as semicoke product, and a part is as circulation semicoke;
(3) screening of circulation semicoke: be thick Jiao and thin burnt by described circulation semicoke screening;
(4) semicoke product is cooling;
(5) heating is thick burnt: fuel combustion is carried out direct heating to thick Jiao, and the thick Jiaozhuo after heating is described thermal barrier, the flue gas of generation required hot flue gas during as the described dry distillation of coal.
Wherein thin Jiaozhuo is described fuel.In addition, the interior water producing when coal gas is cooling is burning burn processing in stove.The flue gas producing when fuel combustion after required hot flue gas, continues on for warm-up combustion-supporting air during as the described dry distillation of coal.
Below the embodiment that contriver provides, so that the technical solution of the utility model is further explained to explanation.
embodiment:
With reference to figure 1, the device of this embodiment comprises: drying oven 14, gas retort 11, burn stove 12, feed bin 1, condenser 2, coal gas cooling purifier 4, sack cleaner 5, tornado dust collector 6, finely-ground coke storehouse 7, air-smoke heat replacing device 8, semicoke lifting gear 9, Semi-coke cooling device 10, steam coils 13 and coal gas particle dust-collecting equipment 3.
Wherein gas retort 11 is positioned at one deck of producing building, drying oven 14 and burn stove 12 and be positioned at two layers; Gas retort 11 and burn and utilize semicoke screening plant roto-sifter, semicoke lifting gear 9 delivery cycle semicokes between stove 12.
The coal gas that retort process produces is through the dedusting of intermittent type granule ash separator, and final semicoke product reclaims after Semi-coke cooling device 10 is cooling.
Concrete distillation process is as follows:
Raw coal is the brown coal that particle is less than 30mm.
Drying oven 14 is steam fluidisation drying oven, be that raw material brown coal are entered after drying oven 14 by feed bin 1, by through steam coils 13 from the cooling steam indirect heating of semicoke product, the steam producing during simultaneously by brown coal preheating and drying blows raw coal raw coal is carried out to fluidized direct heating, the vapor portion producing when dry recycles, and part reclaims or discharge after condenser 2.Wherein drying oven 14 cyclic steam inlet temperatures are that 200-300 DEG C, steam exit temperature are 120-150 DEG C; It is room temperature that drying oven 14 enters brown coal material mouth temperature, discharge port temperature 100-150 DEG C, and brown coal are at the interior stop of drying oven 14 30-60 minute.
Gas retort 11 is the solid of revolution stove of external-heat and internal heat type combination, in its inner core, be connected with thermal barrier and by the coal of destructive distillation, flue between urceolus and inner core is connected with the thermal barrier that indirect heating is used, the type of heating combining by outer heat and thermal barrier carries out destructive distillation heating to brown coal, and realize by downflow system heat exchange.Gas retort 11 discharge port places are provided with roto-sifter, for thick Jiao and thin Jiao are sieved.100-150 in process after preheating DEG C dry coal is mixed in gas retort 11 according to the weight ratio of 1:1 with the semicoke that is heated to 900-1000 DEG C, and at the interior stop of gas retort 11 20-40 minutes, the temperature that goes out gas retort 11 semicokes is 400-550 DEG C; Gas retort rotating speed 0.5-2 rev/min, the volume filling ratio of material in rotary kiln is 30%-40%.
Burn stove 12 for direct heat oven, thick burnt being conveyed into through semicoke lifting gear 9 burnt stove, and screening thin Jiao out is first conveyed into finely-ground coke storehouse 7, is then conveyed into again and burns stove 12.Coal gas is recovered after coal gas particle dust-collecting equipment 3 and coal gas cooling purifier 4.The temperature of wherein burning in stove 12 is 1200-1100 DEG C, semicoke tapping temperature 900-1000 DEG C, flue gas tapping temperature 1000-1100 DEG C; Semicoke stops 20-60 minute in gas retort.
Semicoke product carries out quenching processing in Semi-coke cooling device 10, quenching is that indirect water-cooling quenching is main, and the quenching of auxiliary water spray steam combines, and the water vapor that indirect cooling semicoke produces is connected with steam multitube, drying oven, for dry raw coal, semicoke dry method is discharged of the coke.
Gas retort gas exit place arranges coal gas particle dust-collecting equipment 3, this fly-ash separator intermittent type particle dust-collecting equipment, it comprises two fly-ash separators, adopt from the coal dust in gas retort hot flue gas reverse blowing dust remover out, keep fly-ash separator temperature not decline in the time of blowback, blowback dust out, as fuel, for burning coke oven combustion.Two fly-ash separator periodic runnings, about one hour, adopt the hot flue gas in gas retort heating jacket to carry out blowback, clear out the dust in fly-ash separator.The pressure drop resistance of granule ash separator is 1500-2500Pa.The temperature that coal gas goes out gas retort, enter intermittent type granule ash separator is 350-400 DEG C, enters electric tar after then indirectly cooling by air to obtain tar and scrubbed gas.
The roto-sifter that circulation semicoke exports by gas retort, realize thick burnt and thin burnt separating, thin Jiaozhuo is that fuel burns for semi-coke oven, by semicoke lifting gear 9, the semicoke of 400-550 DEG C that goes out gas retort 11 is risen to and is arranged in the feed bin that burns stove 12 tops, enter to burn after stove 12 is heated to 900-1000 DEG C and enter gas retort 11.
The thin burnt high-temperature flue gas producing after burning coke oven combustion, for heating semicoke, heating gas retort, warm-up combustion-supporting air, realizes the gradient utilization of flue gas heat successively.Wherein burn a stove 12 1000-1100 out DEG C flue gas and enter gas retort 11 heating jackets, going out gas retort 11 heating jackets, entering combustion-supporting empty heat exchange temperature is 500-600 DEG C, going out air heat exchange temperature is 150-180 DEG C, then after dedusting, discharges at the temperature higher than 100 DEG C by exhaust dust device with bag.
Distillation system adopts carefully Jiao's burning, due to thin desulfurization of Jiao, environmental, and thin Jiao is burnt cost lower than coal gas, favourable reduction system fuel expense.Wherein heat semicoke and consume 60-80 kilogram of finely-ground coke.
Claims (3)
1. a brown coal destructive distillation device, is characterized in that, this device comprises:
Drying oven, is fluidized bed steam drying oven, for raw coal preheating and drying: the steam producing while 1. utilizing semicoke product cooling carries out indirect heating to raw coal, and the direct fluidisation of steam cycle and the direct heating raw coal that 2. produce with raw coal preheating and drying;
Gas retort, is the solid of revolution stove of external-heat and internal heat type combination, carries out destructive distillation: the raw coal after 1. utilizing hot flue gas to preheating and drying carries out indirect heating for the coal to after preheating and drying, and raw coal after 2. utilizing thermal barrier to preheating and drying carries out direct heating; Coal after destructive distillation becomes semicoke rear portion as semicoke product, and a part is as circulation semicoke; ;
Semicoke screening plant, is drum-type screening plant, for by the screening of circulation semicoke being thick burnt and thin Jiao;
Burning stove, is direct heat oven, and for heating thick Jiao: fuel combustion is carried out direct heating to thick Jiao, the thick Jiaozhuo after heating is described thermal barrier, the flue gas of generation required hot flue gas during as the described dry distillation of coal;
Semi-coke cooling device, for the water pipe cooling and directly cooling semicoke water cooler combining of water spray indirectly, for cooling semicoke product.
2. brown coal destructive distillation device as claimed in claim 1, is characterized in that, this device also comprises:
Semicoke lifting gear is high temperature bucket elevator, for promoting thick Jiao;
Air-smoke heat replacing device is plate-type heat exchanger, for heat exchange between hot flue gas and air;
Described drying oven and the top of burning stove and be positioned at gas retort, and described drying oven, burn stove and be positioned at same level; Gas retort and granule ash separator are positioned at same level;
Raw coal after thermal barrier and preheating and drying enters from gas retort feed end, and semicoke and coal gas are exported from gas retort discharge end; The hot flue gas of fuel combustion with thick burnt burning following current heat exchange in stove; Go out to burn material in the hot flue gas of stove and gas retort and carry out the indirect countercurrent flow of external-heat; Go out the hot flue gas of gas retort and burn the required combustion air countercurrent flow of stove.
3. brown coal destructive distillation device as claimed in claim 1, is characterized in that, this device also comprises:
Coal gas particle dust-collecting equipment is intermittent type particle dust-collecting equipment, for removing the coal dust of coal gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420265358.2U CN203960118U (en) | 2014-05-22 | 2014-05-22 | A kind of brown coal destructive distillation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420265358.2U CN203960118U (en) | 2014-05-22 | 2014-05-22 | A kind of brown coal destructive distillation device |
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| CN203960118U true CN203960118U (en) | 2014-11-26 |
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| CN201420265358.2U Expired - Fee Related CN203960118U (en) | 2014-05-22 | 2014-05-22 | A kind of brown coal destructive distillation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113831922A (en) * | 2021-09-06 | 2021-12-24 | 浙江宜可欧环保科技有限公司 | Heating mode adjustable pyrolysis furnace |
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2014
- 2014-05-22 CN CN201420265358.2U patent/CN203960118U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113831922A (en) * | 2021-09-06 | 2021-12-24 | 浙江宜可欧环保科技有限公司 | Heating mode adjustable pyrolysis furnace |
| CN113831922B (en) * | 2021-09-06 | 2024-04-16 | 浙江宜可欧环保科技有限公司 | Heating mode adjustable pyrolysis furnace |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20160522 |
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| CF01 | Termination of patent right due to non-payment of annual fee |