CN101381609A - Gas full-circulation oil-shale grading dry distillation technique and apparatus - Google Patents
Gas full-circulation oil-shale grading dry distillation technique and apparatus Download PDFInfo
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- CN101381609A CN101381609A CNA2008100130885A CN200810013088A CN101381609A CN 101381609 A CN101381609 A CN 101381609A CN A2008100130885 A CNA2008100130885 A CN A2008100130885A CN 200810013088 A CN200810013088 A CN 200810013088A CN 101381609 A CN101381609 A CN 101381609A
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Abstract
The invention relates to a process for carrying out fractionation to oil shale by utilizing gas as a thermal carrier under the condition of whole circulation. The oil shale is divided into three classes with different specifications: 0 to 6 millimeters, 6 to 20 millimeters and 20 to 50 millimeters; and the oil shale enters different carbonization furnaces for carbonization. The daily handling capacity of each set of the carbonization furnace is 1,000 tons. The oil shale is crushed and sifted, is dried and heated to the temperature of over 50 DEG C by smoke gas and enters the carbonization furnaces with different specifications for carbonization. The inside of the carbonization furnace is provided with feed distribution perforated wall which is matched with the particle size of the oil shale and a gas distribution structure. Thermal circulating gas is heated to the temperature of 700 DEG C in a heating furnace and is evenly and continuously transported to the middle part of the carbonization furnaces. Cold circulating gas enters from the lower part of the carbonization furnaces; carbonized carbocoal is cooled to the temperature of 250 DEG C, is discharged to a water-sealed carbocoal pool, is cooled to the temperature of 80 DEG C and is discharged to the outside of the furnace. One part of the carbocoal is transported to the heating furnace, is mixed with the gas for combustion; and one part of the carbocoal is transported to a power plant as a fuel. Carbonized oil gas passes through a cooling tower and is subjected to oil collection by an electric catcher and performs oil-gas-water separation; oil enters a storage tank; and water enters a circulating water pool. One part of the gas is used as the thermal carrier and is circularly used. One part of the gas is used as the fuel for the heating furnace; and one part of the gas is used as fuel gas for power generation. The theoretical oil yield of the process can reach over 90 percent.
Description
Affiliated technical field
The present invention is a kind of technology of resinous shale being carried out grading dry distillation with gas as thermal barrier under gas recycle to extinction state.Gradation sizing after the resinous shale fragmentation, grading dry distillation.Burning device in not having in the gas retort, destructive distillation institute heat requirement is all supplied with by circulating mash gas.
Background technology
At present, domestic oil shale retorting oil refining mode, a kind of is Fushun formula circular furnace, is half internal combustion, half circulation, and a large amount of water vapour and air admission are arranged, and oil-collecting ratio is 60～65%, and the processing granularity is 12-75mm.Single stove processing power is little, 100 tons in day handling oil shale.Formula side, a kind of Maoming stove is full internal combustion type, and air admission is arranged, and oil-collecting ratio is about 70%, and the processing granularity is 30-120mm.Single stove processing power is 200 ton per days.Two kinds of type of furnaces all have treatment capacity little, and floor space is big, defectives such as oil-collecting ratio is low, contaminate environment.Formula side, Maoming stove all stops production the eighties in 20th century because of pollution problem.Adopt pyrogenous Petro Xi Kesi (Petrosix) stove that Brazil is arranged abroad of recycle to extinction mode, the processing granularity is 6.4-50mm, and day output is 6000 tons.But this kind type of furnace tubular oven partial volume is huge, involves great expense, and introduction condition harshness, and the not utilization of this stove semicoke pollute.
Summary of the invention
It is little to the objective of the invention is to solve present domestic oil shale retorting oil refining device day output, and floor space is big, and oil-collecting ratio is low, contaminate environment, semicoke can not get effective utilization, import equipment problem such as cost an arm and a leg, provide a kind of day output big, the distillation process of oil-collecting ratio height and environmental protection.
Key problem in technology of the present invention is the thermal circulation gas to about 700 ℃ of the continuous equilibrium supplies of gas retort, makes varigrained resinous shale obtain abundant destructive distillation in different gas retorts.Destructive distillation institute heat requirement is all supplied with by circulating mash gas.Adopted following technology to reach the purpose of invention for this reason.The one, system has adopted gradation sizing at the resinous shale crushing and screening, the technology of classification dispensing.Ore reduction is become 0-6mm, 6-20mm, three kinds of different specifications of 20-50mm, classification is put in storage, and grading dry distillation has avoided size block to advance a gas retort simultaneously, inconsistent, the uneven defective of being heated of required destructive distillation time.The 2nd, resinous shale has been adopted vibrating turning formula preheating and drying technology.With discarded flue gas resinous shale is preheating to from envrionment temperature and enters gas retort more than 50 ℃ again, removed the partially aqueous in the ore, reduced the heat demand of gas retort, save the energy.The 3rd, gas retort adopts and handles cloth, the gas distribution structure that granulometric facies adapt to, material contacts with thermal circulation gas is balanced, and the incomplete two kinds of situations of common coking of existing gas retort and destructive distillation have been avoided in the samming destructive distillation, improve pyrogenous thoroughness, also improved the oil recovery rate simultaneously.The 4th, feed cold circulating mash gas from the gas retort bottom, semicoke is cooled to below 250 ℃, reclaimed heat, changed the way of the traditional cooling of bubbling air below semicoke simultaneously, avoided the defective of combustion gasses and fixed carbon in gas retort, not only improve the oil recovery rate, also improved the calorific value of semicoke simultaneously.The 5th, adopted the water seal scraper-type technology of the discharging of the coke, prevented the methane gas effusion, protected environment.The rotation that has changed the Fushun stove is simultaneously discharged of the coke, and many stove interlocks are unfavorable for the defective that single stove is regulated and control.The 6th, adopted the process furnace technology of gas and semicoke mixed firing, the heat of gas retort recycle to extinction and the requirement of temperature have been guaranteed, utilized low-calorie semicoke (thermal value is at 800-1000 kilocalorie/kilograms) simultaneously, saved the energy, the lime-ash after the burning is directly used in makes building material product or mine backfill.The 7th, adopted two-stage heat accumulating type radiation heat transfer device, solved Fushun formula regenerative furnace methane gas temperature fluctuation, unbalanced defective, guaranteed that gas retort advances tile Si Wendu and is not less than 700 ℃ requirement.Funnel temperature is dropped to below 150 ℃, made full use of heat energy.The 8th, native system water has been realized closed circulation, does not discharge water saving, energy-conservation, pollution-free.The water of discharging from the down-hole is used for the cooling of oil gas after treatment, enters circulating water pool after oily water separation, returns water circulation system after treatment.
Technical process of the present invention is as follows:
Shale is heated to the gas retort destructive distillation that enters different size more than 50 ℃ again with flue gas drying earlier behind crushing and screening.Be provided with the cloth tracery wall and the gas distribution structure that adapt with the oil shale particle size in the gas retort.Thermal circulation gas is heated to 700 ℃ in process furnace, the gas retort middle part is sent in equilibrium continuously.Cold circulating mash gas enters from the gas retort bottom, and the semicoke that destructive distillation is intact is cooled to 250 ℃, enters the semicoke pond of water seal, is cooled to 80 ℃ and discharges out of the furnace with scraper plate.The part of semicoke is admitted to process furnace and gas mixed firing, and a part is sent to power plant and acts as a fuel.Destructive distillation oil gas is through cooling tower, after the electric fishing device is received oil, carry out oil and gas and water from, oil enters basin, water enters circulating water pool.A methane gas part recycles as thermal barrier.A part is as process furnace fuel, and a part is as fuel gas generation.This is invented theoretical oil-collecting ratio and can reach more than 90%.
The present invention compares with the domestic Fushun formula carbonization furnace that generally uses now, has following tangible advantage.The one, treatment capacity is big, and Fushun stove day output is 100 tons, and the day output of every group of test furnace that this invention is at present built in the Huadian, Jilin is 1000 tons, and the ability of handling a kind of granularity resinous shale is the 300-400 ton per day.Next step can develop into 1000 tons of single stove day outputs, and every group of stove processing power is more than 3000 ton per days; The 2nd, oil recovery rate height, fushun retort oven oil recovery rate is 60-65%, and the present invention is through commerical test, and under the not too perfect situation of testing apparatus, oil-collecting ratio has reached 82%, and by theoretical measuring and calculating, the oil recovery rate should be more than 90%; The 3rd, energy-conservation, owing to adopted gas recycle to extinction technology, whole destructive distillation oil refining institute heat requirement derives from resinous shale itself fully, and unnecessary methane gas also is used for generating, remedied that the destructive distillation power supply for station loads more than 80%; The 4th, the gas recycle to extinction has been adopted in environmental protection, the present invention, the closed circulation of water, and the recovery of thiamines, semicoke and gas mixed firing, technology such as flue gas recycling, bag-type dust, non-wastewater discharge, contamination-free is overflowed, and residue is recycled and is met national requirements for environmental protection; The 5th, resource utilization height, Fushun stove can only utilize the above shale of 12mm, and the present invention can utilize the shale of various different sizes, resource utilization 100%; The 6th, good in economic efficiency, per diem handle 1000 tons of destructive distillation oil refining factory measuring and calculating, the oil-collecting ratio that the light raising is 20 percentage points is just increased income 1.2 hundred million yuan every year.
Description of drawings
Accompanying drawing 1 is gas full-circulation oil-shale destructive distillation flow scheme figure.The flow process that has mainly reflected this novel process among the figure, from ore sizing, grading dry distillation, the working cycle of gas, the recovery system of oil gas all have distinct reflection.
Accompanying drawing 2 is process principle figures of resinous shale drying and preheating system, and each several part is respectively shown in the figure: 1, feed bin; 2, feeding machine; 3, rotary conveyor; 4, hopper; 5, drying oven body; 6, gas blower; 7, discharge machine; 8, sack cleaner; 9, chimney; 10, induced draft fan; 11, discharge travelling belt.
Accompanying drawing 3 is principle of work of full circulation carbonization furnace.Circulating mash gas enters from the stove middle part, and resinous shale drops into from stove, is provided with collapser in the stove, makes the whereabouts of gas flow and material even.Be provided with tracery wall and watercooling jacket below the stove, the semicoke temperature after the destructive distillation is dropped to below 250 ℃.The bottom is provided with water seal and scraper conveyer, and semicoke is discharged out of the furnace.The oil gas that destructive distillation generates discharges out of the furnace through effuser with the top of circulating mash gas at stove, enters oil-water separation system.
Accompanying drawing 6 is resinous shale drying oven vertical planning drawing.
Embodiment
The present invention need specifically to implement three conditions.The one, there is one can remove ore moisture, improve the raw material charging temperature but do not cause oil-containing in the resinous shale and preheating and drying stove that fugitive constituent is evaporated simultaneously; The 2nd, there is one can guarantee to the equilibrium of gas retort supply temperature, do not fluctuate (being stabilized in about 700 ℃) and can guarantee the gas heating furnace of destructive distillation institute heat requirement; The 3rd, a gas retort that can adapt to the different grain size needs is arranged.Accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, accompanying drawing 6 have provided the vertical planning drawing of three kinds of furnace design respectively.
Claims (3)
1, a kind of oil refining process that utilizes gas under the recycle to extinction state, to carry out oil-shale grading dry distillation as thermal barrier.It is characterized in that varigrained resinous shale obtains abundant destructive distillation in different gas retorts, burning device in gas retort, not having, no air admission, destructive distillation institute heat requirement is all supplied with by thermal circulation gas.
2,, it is characterized in that the oil-shale grading screening, drying and preheating according to right 1 described distillation process.Enter different gas retorts by different granularities and carry out destructive distillation.Be provided with the cloth tracery wall and the gas distribution structure that adapt to the destructive distillation granulometric facies in the gas retort.
3,, it is characterized in that continuously, stable equilibrium supplies with about 700 ℃ thermal circulation gas to gas retort according to right 1 described distillation process.Thermal circulation gas obtains by mixed firing semicoke and gas.The tubular heat exchanger first step is heated to 500 ℃ with circulating mash gas, and the second stage is heated to 700 ℃ with the accumulation of heat radiation formula with gas.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101942313A (en) * | 2010-07-27 | 2011-01-12 | 沈阳成大弘晟能源研究院有限公司 | Huadian type process and device for dry distillation of oil shale |
| WO2011032354A1 (en) * | 2009-09-15 | 2011-03-24 | 北京国电富通科技发展有限责任公司 | External combustion and internal heating type coal retort furnace |
| CN102002377A (en) * | 2010-12-01 | 2011-04-06 | 吴启成 | Aerobic low-temperature dry distillation process and device |
| CN102134498A (en) * | 2011-01-27 | 2011-07-27 | 吴启成 | Process and device for dry distillation of oil shale with low gas content |
| CN102161898A (en) * | 2011-03-21 | 2011-08-24 | 吴启成 | Multi-layer drum-type destructive distillation process and retort furnace for oil shale |
| CN102207029A (en) * | 2010-11-14 | 2011-10-05 | 龙口矿业集团有限公司 | Method for comprehensively utilizing oil shale refining residual gas |
| CN102295940A (en) * | 2011-07-11 | 2011-12-28 | 中国石油大学(北京) | Novel oil shale dry distillation and oil refining method and device |
| CN102776010A (en) * | 2012-08-10 | 2012-11-14 | 江苏鹏飞集团股份有限公司 | Oil shale destructive distillation method |
| CN102942943A (en) * | 2012-11-16 | 2013-02-27 | 东北电力大学 | Oil shale gas-solid heat carrier dry distillation and semicoke combustion electricity generation integral process |
| CN102977904A (en) * | 2012-11-16 | 2013-03-20 | 东北电力大学 | Oil shale synthesized utilization method |
| CN103013545A (en) * | 2012-12-11 | 2013-04-03 | 山东绿环动力设备有限公司 | Power generation system taking oil shale as energy |
| CN103160324A (en) * | 2013-03-29 | 2013-06-19 | 陕西煤业化工技术研究院有限责任公司 | Integrated system and method for multi-particle-size grading, pyrolyzing and gasifying for raw coal |
| CN104534462A (en) * | 2014-12-30 | 2015-04-22 | 东北电力大学 | Oil shale semicoke fluidization burning heat pipe type circulation gas heating furnace |
| CN109488270A (en) * | 2019-01-09 | 2019-03-19 | 成都聚熵能源科技有限公司 | A kind of system and method for two-way horizontal well hot fume sealing and circulating exploitation oil-sand |
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2008
- 2008-09-03 CN CNA2008100130885A patent/CN101381609A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU2010295138B2 (en) * | 2009-09-15 | 2015-02-26 | Beijing Guodian Futong Science And Technology Development Co., Ltd. | External combustion and internal heating type coal retort furnace |
| WO2011032354A1 (en) * | 2009-09-15 | 2011-03-24 | 北京国电富通科技发展有限责任公司 | External combustion and internal heating type coal retort furnace |
| CN101942313B (en) * | 2010-07-27 | 2014-06-18 | 沈阳成大弘晟能源研究院有限公司 | Huadian type process and device for dry distillation of oil shale |
| CN101942313A (en) * | 2010-07-27 | 2011-01-12 | 沈阳成大弘晟能源研究院有限公司 | Huadian type process and device for dry distillation of oil shale |
| CN102207029A (en) * | 2010-11-14 | 2011-10-05 | 龙口矿业集团有限公司 | Method for comprehensively utilizing oil shale refining residual gas |
| CN102002377A (en) * | 2010-12-01 | 2011-04-06 | 吴启成 | Aerobic low-temperature dry distillation process and device |
| CN102002377B (en) * | 2010-12-01 | 2013-03-20 | 吴启成 | Aerobic low-temperature dry distillation process and device |
| CN102134498A (en) * | 2011-01-27 | 2011-07-27 | 吴启成 | Process and device for dry distillation of oil shale with low gas content |
| CN102161898A (en) * | 2011-03-21 | 2011-08-24 | 吴启成 | Multi-layer drum-type destructive distillation process and retort furnace for oil shale |
| CN102295940A (en) * | 2011-07-11 | 2011-12-28 | 中国石油大学(北京) | Novel oil shale dry distillation and oil refining method and device |
| CN102295940B (en) * | 2011-07-11 | 2013-06-26 | 中国石油大学(北京) | Novel oil shale dry distillation and oil refining method and device |
| CN102776010A (en) * | 2012-08-10 | 2012-11-14 | 江苏鹏飞集团股份有限公司 | Oil shale destructive distillation method |
| CN102776010B (en) * | 2012-08-10 | 2013-12-04 | 江苏鹏飞集团股份有限公司 | Oil shale dry distillation method |
| CN102977904A (en) * | 2012-11-16 | 2013-03-20 | 东北电力大学 | Oil shale synthesized utilization method |
| CN102942943B (en) * | 2012-11-16 | 2014-04-16 | 东北电力大学 | Oil shale gas-solid heat carrier dry distillation and semicoke combustion electricity generation integral process |
| CN102977904B (en) * | 2012-11-16 | 2014-08-13 | 东北电力大学 | Oil shale synthesized utilization method |
| CN102942943A (en) * | 2012-11-16 | 2013-02-27 | 东北电力大学 | Oil shale gas-solid heat carrier dry distillation and semicoke combustion electricity generation integral process |
| CN103013545A (en) * | 2012-12-11 | 2013-04-03 | 山东绿环动力设备有限公司 | Power generation system taking oil shale as energy |
| CN103160324A (en) * | 2013-03-29 | 2013-06-19 | 陕西煤业化工技术研究院有限责任公司 | Integrated system and method for multi-particle-size grading, pyrolyzing and gasifying for raw coal |
| CN103160324B (en) * | 2013-03-29 | 2014-12-10 | 陕西煤业化工技术研究院有限责任公司 | Integrated system and method for multi-particle-size grading, pyrolyzing and gasifying for raw coal |
| CN104534462A (en) * | 2014-12-30 | 2015-04-22 | 东北电力大学 | Oil shale semicoke fluidization burning heat pipe type circulation gas heating furnace |
| CN109488270A (en) * | 2019-01-09 | 2019-03-19 | 成都聚熵能源科技有限公司 | A kind of system and method for two-way horizontal well hot fume sealing and circulating exploitation oil-sand |
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