CN105295977A - Oil shale efficient utilization method integrating novel gas heat carrier dry distillation and Fischer-Tropsch synthesis oil preparation into whole - Google Patents
Oil shale efficient utilization method integrating novel gas heat carrier dry distillation and Fischer-Tropsch synthesis oil preparation into whole Download PDFInfo
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- CN105295977A CN105295977A CN201510741243.5A CN201510741243A CN105295977A CN 105295977 A CN105295977 A CN 105295977A CN 201510741243 A CN201510741243 A CN 201510741243A CN 105295977 A CN105295977 A CN 105295977A
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Abstract
The invention discloses an oil shale efficient utilization method integrating novel gas heat carrier dry distillation and Fischer-Tropsch synthesis oil preparation into a whole. A gas heat carrier dry distillation method, solid fuel gasification and F-T synthesis are integrated, and a solid fuel gasification technology is utilized for feeding small-sized oil shale which can not be applied to dry distillation after being broken and semicoke produced during dry distillation into a gasification furnace to be gasified, so that high-efficiency and clean utilization of small-sized oil shale and semicoke is realized; gasification synthesis gas generated in the gasification furnace is directly fed into a dry distillation furnace for providing heat for an oil shale dry distillation process; one part of mixed gas of pyrolysis gas produced in the oil shale dry distillation process and the gasification synthesis gas enters an F-T synthesis subsystem for preparing diesel oil; one part of the mixed gas is directly fed into the dry distillation furnace for supplementing heat for the oil shale dry distillation process; and the rest of the mixed synthesis gas is fed into a gas storage cabinet. The oil shale efficient utilization method disclosed by the invention has the advantages that liquid fuel yield of an oil shale comprehensive utilization system is greatly increased, and the gradient utilization of primary energy sources is realized.
Description
Technical field
The present invention relates to oil shale resources technical field of comprehensive utilization, be specifically related to a kind of resinous shale Efficient utilization method integrating the destructive distillation of new gas thermal barrier and F-T synthesis liquefaction.
Background technology
The energy concerns countries in the world Economic development and people's life level.Along with world economy sustainable development, especially emerging economy increases rapidly, and energy expenditure continues strong growth, and imbalance between supply and demand worsens further.Fossil energy occupies the principal status of public economy in world energy sources general consumption, and other energy especially new forms of energy development rapidly, but will make substantial progress and need time.Since China in 1993 becomes net import of oil state for the first time, China's oil external dependence degree increases year by year, has risen to close to sixty percent to these data in 2015.Under existing situation, greatly developing self potential energy industry project, accelerate energy reserves construction, reduce China's oil external dependence degree, is the prerequisite ensureing China's economic society healthy and sustainable development.
" many coals, few oil, deficency " is China's energy structure feature.Although China's conventional oil and natural gas reserves do not enrich, unconventional energy resource rich reserves, Exploitation Potential is huge.Oil shale resources are exactly a kind of typical unconventionaloil pool energy, its oil shale reserves is about 2,000,000,000,000 tons (being equivalent to 80,000,000,000 tons of shale oil), be equivalent to 5.4 times of natural oil workable reserve, its application is very extensive, both incendivity generating, again can destructive distillation oil refining, the waste residue produced in the course of processing also can be used for manufacturing material of construction.Therefore, strengthen the exploitation to resinous shale, to changing China's energy structure and improving China's energy deficiency present situation, there is very important strategic importance.
China is to existing more than the 80 year history of the exploitation of resinous shale, and related development utilizes technique relative maturity, but still there is a lot of defect and weak point.Deficiency wherein existing for gaseous heat-carrier retorting technique has: the block resinous shale after (1) fragmentation, only have the macrobead resinous shale of particle diameter between 16 ~ 75mm can be utilized by gas retort, the granule wax shale of remaining nearly 20% is rejected, and causes serious Energy resources waste; (2) pyrolysis gas is as gaseous heat-carrier, needs independent process furnace combustion parts pyrolysis gas cycling hot to be vented one's spleen and is heated to certain temperature, also makes cost increase while waste partial thermal decomposition gas; (3) gaseous heat-carrier destructive distillation oil refining, owing to adopting wet type coke discharging, the semicoke of institute's output is difficult to utilize, and energy utilization rate is only 50% ~ 60% of raw oil shale more; (4) the solid waste semicoke that oil shale distillation process produces contains lot of trace metallic element, half volatile material, polynuclear aromatics, oil, phenolic compound, sulfide and other materials, causes serious pollution to environment.
There is the problems such as high energy consumption, high carbon emission, high pollution, low-conversion in existing Energy utilization patterns.Meanwhile, China's Energy resources 'bottleneck' restrictions become increasingly conspicuous, and the increasing pressure of energy-saving and emission-reduction is large, and energy growth pattern is in the urgent need to changing.For the drawback of existing energy utilization technique, it is high in technological content, low in resources consumption, low in the pollution of the environment, good in economic efficiency, secure safely that future source of energy utilizes technological development direction to accomplish.
The present invention considers that future source of energy utilizes technological development direction, and existing energy utilization Process ba-sis carries out substantial improvement and bring new ideas.Wherein, gasification is the important channel that solid fuel high-efficiency cleaning utilizes, and meanwhile, solid fuel gasification is also the major way of adjustment China energy structure.After solid fuel gasification, both can improve the utilization ratio of fuel, reduce CO, SO
2deng discharge, many clean energies can be made again; In resinous shale gaseous heat-carrier distillation process, isolate a large amount of pyrolysis gas, its composition mainly comprises H
2, CO, CO
2, CH
4, C
2h
6deng gas, this part gas can be used as the high-quality raw material of F-T synthesis after conversion of reforming.Undertaken integrated by gaseous heat-carrier dry distillation, solid fuel gasification and F-T synthesis, can not only solve respective weak point, the energy can also be made to be fully utilized, resinous shale utilization system liquid fuel yield also will be improved significantly simultaneously.。
Summary of the invention
For solving the problem, the invention provides a kind of resinous shale Efficient utilization method integrating the destructive distillation of new gas thermal barrier and F-T synthesis liquefaction, there is the advantages such as less energy-consumption, low-carbon emission, low stain, high conversion.
For achieving the above object, the technical scheme that the present invention takes is:
Integrate a resinous shale Efficient utilization method for the destructive distillation of new gas thermal barrier and F-T synthesis liquefaction, comprise the steps:
Oil shale mine in S1, shale warehouse sends into preheater after fragmentation, resinous shale after preheating enters shale separator and is divided into two portions by size, macrobead resinous shale is wherein sent in gaseous heat-carrier gas retort and carries out destructive distillation, the oil gas produced traps with the mixed synthesis gas as thermal barrier by collecting umbrella and sends body of heater, enter in gas-oil separation treating plant, by process such as cooling, dedusting, purifications, the shale oil finally obtained is sent in storage tank and is stored;
S2, isolated a part of mixed synthesis gas send into gas storage holder, remaining mixed synthesis gas enters lower system, the oil shale semi-coke produced sends into semicoke water cooler, granule wax shale sends into gasifying reactor after mixing with the semicoke from semicoke water cooler, also together enter gasifying reactor for the air of cooling down high-temperature semicoke and water vapour and carry out gasification reaction, the high-temperature gasification synthetic gas produced is sent in gas retort as destructive distillation thermal barrier, and the lime-ash that gasification reaction produces is discharged through residue extraction machine;
S3, the periodic off-gases produced after F-T synthesis reactor and unreacting gas send into gaseous combustion stove and air mixed combustion heat release, heating mixed synthesis gas and the oxygen needed for reforming reaction and water vapour, the flue gas of discharging enters preheater preheats resinous shale raw material, and after through cooling flue gas enter electrostatic precipitator dedusting after, by induced draft fan send into chimney discharge;
S4, by the mixed synthesis gas heated, a part enters F-T synthon system as high quality raw material and produces diesel oil, and a part directly sends into gas retort, for oil shale distillation process provides thermal source;
S5, the mixed synthesis gas passing through heating and oxygen and water vapour together enter reformation shift-converter and reforming reaction occur, then send into F-T synthesis reactor and carry out F-T synthesis, the gas-liquid mixture generated enters cooling and purifying separating device, and the diesel oil that gas-liquid mixture obtains after isolation of purified is directly sent into diesel fuel tank and stored
The present invention has following beneficial effect:
Effectively improve the liquid fuel yield of resinous shale utilization system; Fully utilize the resinous shale of different-grain diameter in shattering process, the resinous shale that particle diameter is larger is used for destructive distillation liquefaction, send into gasifying reactor together with the semicoke that the less resinous shale of particle diameter and destructive distillation produce and react gas processed, the oil shale particle of different-grain diameter is obtained for and makes full use of; The semicoke that granule wax shale and destructive distillation produce is carried out gasification process, by by solid fuel gasification, realizes the object improving fuel availability; The product of system comprises shale oil, diesel oil and some other chemical materialss, achieves system Poly-generation, changes the general layout that traditional oils shale utilizes the simplification of system product; System mainly uses high-temperature gasification synthetic gas as destructive distillation thermal source, decrease the dependence to external heat source, convert most of mixed synthesis gas to liquid fuel simultaneously, compared to resinous shale system in the past, not only increase substantially the liquid fuel yield of resinous shale utilization system, and effectively reduce CO
2quantity discharged; Comprehensive utilization degree is high, scientific and reasonable.
Accompanying drawing explanation
Fig. 1 integrate for the embodiment of the present invention is a kind of the resinous shale Efficient utilization method of the destructive distillation of new gas thermal barrier and F-T synthesis liquefaction use the structural representation of equipment.
Embodiment
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, this equipment specifically implementing to use comprises gaseous heat-carrier destructive distillation subsystem, gasification reaction subsystem and gas combustion heating and fume treatment subsystem, gaseous heat-carrier destructive distillation subsystem comprises shale warehouse 1, preheater 2, shale separator 3, gas retort 4, gas-oil separation treating plant 5, thionizer 6 is connected successively, and gas-oil separation treating plant 5 is connected with gas storage holder 8 with storage tank 7, and gas retort 4 is connected with semicoke water cooler 9, and gasification reaction subsystem comprises gasifying reactor 10 and residue extraction machine 11, semicoke water cooler 9, gasifying reactor 10 is connected successively with residue extraction machine 11, and gaseous combustion heating and fume treatment subsystem comprise the gaseous combustion stove 12 be connected successively, electrostatic precipitator 13, induced draft fan 14 and chimney 15, F-T synthon system comprise the reformation shift-converter 16 be connected successively, F-T synthesis reactor 17, cooling and purifying separating device 18 and diesel fuel tank 19, F-T synthesis reactor 17 are connected with gaseous combustion stove 12, and gaseous combustion stove 12 is connected with preheater 2, and gaseous combustion stove 12 is connected with reformation shift-converter 16.
Embodiments provide a kind of resinous shale Efficient utilization method integrating the destructive distillation of new gas thermal barrier and F-T synthesis liquefaction, comprise the steps:
Oil shale mine in S1, shale warehouse 1 sends into preheater 2 after fragmentation, resinous shale after preheating enters shale separator 3 and is divided into two portions by size, macrobead resinous shale is wherein sent in gaseous heat-carrier gas retort 4 and carries out destructive distillation, the oil gas produced traps with the mixed synthesis gas as thermal barrier by collecting umbrella and sends body of heater, enter in gas-oil separation treating plant 5, by process such as cooling, dedusting, purifications, the shale oil finally obtained is sent in storage tank 7 and is stored;
S2, isolated a part of mixed synthesis gas send into gas storage holder 8, remaining mixed synthesis gas enters lower system, the oil shale semi-coke produced sends into semicoke water cooler 9, gasifying reactor 10 is sent into after granule wax shale mixes with the semicoke from semicoke water cooler 9, also together enter gasifying reactor 10 for the air of cooling down high-temperature semicoke and water vapour and carry out gasification reaction, the high-temperature gasification synthetic gas produced is sent in gas retort 4 as destructive distillation thermal barrier, and the lime-ash that gasification reaction produces is discharged through residue extraction machine 11;
S3, the periodic off-gases produced after F-T synthesis reactor 17 and unreacting gas send into gaseous combustion stove 12 and air mixed combustion heat release, heating mixed synthesis gas and the oxygen needed for reforming reaction and water vapour, the flue gas of discharging enters preheater 2 preheat oil shale raw material, and after through cooling flue gas enter electrostatic precipitator 13 dedusting after, send into chimney 15 by induced draft fan 14 and discharge;
S4, by the mixed synthesis gas heated, a part enters F-T synthon system as high quality raw material and produces diesel oil, and a part directly sends into gas retort, for oil shale distillation process provides thermal source;
S5, the mixed synthesis gas passing through heating and oxygen and water vapour together enter reformation shift-converter 16 and reforming reaction occur, then send into F-T synthesis reactor 17 and carry out F-T synthesis, the gas-liquid mixture generated enters cooling and purifying separating device 18, and the diesel oil that gas-liquid mixture obtains after isolation of purified is directly sent into diesel fuel tank 19 and stored.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (1)
1. integrate a resinous shale Efficient utilization method for the destructive distillation of new gas thermal barrier and F-T synthesis liquefaction, it is characterized in that, comprise the steps:
Oil shale mine in S1, shale warehouse sends into preheater after fragmentation, resinous shale after preheating enters shale separator and is divided into two portions by size, macrobead resinous shale is wherein sent in gaseous heat-carrier gas retort and carries out destructive distillation, the oil gas produced traps with the mixed synthesis gas as thermal barrier by collecting umbrella and sends body of heater, enter in gas-oil separation treating plant, by process such as cooling, dedusting, purifications, the shale oil finally obtained is sent in storage tank and is stored;
S2, isolated a part of mixed synthesis gas send into gas storage holder, remaining mixed synthesis gas enters lower system, the oil shale semi-coke produced sends into semicoke water cooler, granule wax shale sends into gasifying reactor after mixing with the semicoke from semicoke water cooler, also together enter gasifying reactor for the air of cooling down high-temperature semicoke and water vapour and carry out gasification reaction, the high-temperature gasification synthetic gas produced is sent in gas retort as destructive distillation thermal barrier, and the lime-ash that gasification reaction produces is discharged through residue extraction machine;
S3, the periodic off-gases produced after F-T synthesis reactor and unreacting gas send into gaseous combustion stove and air mixed combustion heat release, heating mixed synthesis gas and the oxygen needed for reforming reaction and water vapour, the flue gas of discharging enters preheater preheats resinous shale raw material, and after through cooling flue gas enter electrostatic precipitator dedusting after, by induced draft fan send into chimney discharge;
S4, by the mixed synthesis gas heated, a part enters F-T synthon system as high quality raw material and produces diesel oil, and a part directly sends into gas retort, for oil shale distillation process provides thermal source;
S5, the mixed synthesis gas passing through heating and oxygen and water vapour together enter reformation shift-converter and reforming reaction occur, then send into F-T synthesis reactor and carry out F-T synthesis, the gas-liquid mixture generated enters cooling and purifying separating device, and the diesel oil that gas-liquid mixture obtains after isolation of purified is directly sent into diesel fuel tank and stored.
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102721A (en) * | 2017-12-29 | 2018-06-01 | 胜帮科技股份有限公司 | A kind of fine coal hydropyrolysis and gasification integral system and its processing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4116810A (en) * | 1976-05-24 | 1978-09-26 | Paraho Corporation | Indirect heating pyrolysis of oil shale |
| CN103131446A (en) * | 2011-12-05 | 2013-06-05 | 中国石油化工股份有限公司 | Method and device for fluid-bed destructive distillation of oil shale |
| CN104004532A (en) * | 2014-05-29 | 2014-08-27 | 华南理工大学 | Integrated refining system and process using oil shale retorting gas to produce hydrogen and upgrade |
-
2015
- 2015-11-05 CN CN201510741243.5A patent/CN105295977B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4116810A (en) * | 1976-05-24 | 1978-09-26 | Paraho Corporation | Indirect heating pyrolysis of oil shale |
| CN103131446A (en) * | 2011-12-05 | 2013-06-05 | 中国石油化工股份有限公司 | Method and device for fluid-bed destructive distillation of oil shale |
| CN104004532A (en) * | 2014-05-29 | 2014-08-27 | 华南理工大学 | Integrated refining system and process using oil shale retorting gas to produce hydrogen and upgrade |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102721A (en) * | 2017-12-29 | 2018-06-01 | 胜帮科技股份有限公司 | A kind of fine coal hydropyrolysis and gasification integral system and its processing method |
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Granted publication date: 20171027 Termination date: 20211105 |