CN211497499U - Comprehensive utilization system of oil shale with biomass - Google Patents
Comprehensive utilization system of oil shale with biomass Download PDFInfo
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- CN211497499U CN211497499U CN201922193837.3U CN201922193837U CN211497499U CN 211497499 U CN211497499 U CN 211497499U CN 201922193837 U CN201922193837 U CN 201922193837U CN 211497499 U CN211497499 U CN 211497499U
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Abstract
The utility model belongs to the technical field of mineral resources, a comprehensive utilization system of oil shale companion living beings is related to. The system comprises a storage bin, a crusher, a vibrating screen, a retort furnace, a circulating fluidized bed boiler and an ash storage bin which are sequentially connected, and further comprises an auxiliary material storage bin storing bauxite, a fluxing agent and a binding agent, wherein the auxiliary material storage bin is sequentially connected with the mixing bin, a ball mill, a disc type granulator, a dryer, a rotary kiln and a propping agent storage bin, and a discharge port of the ash storage bin, a semicoke outlet at the bottom of the retort furnace and a discharge port of the auxiliary material storage bin are connected with a feed inlet of the mixing bin. The system can comprehensively recover and utilize the associated substances of the oil shale, and effectively improves the resource utilization rate.
Description
Technical Field
The utility model belongs to the technical field of mineral resources, a comprehensive utilization system of oil shale companion living beings is related to.
Background
The oil shale is a high-ash sedimentary rock containing combustible organic matters, and belongs to non-renewable fossil energy sources. For oil shale exploitation, two modes of ground dry distillation and in-situ exploitation are common. Wherein, the ground dry distillation is to perform low-temperature dry distillation treatment on the oil shale through a dry distillation furnace to obtain shale oil; in the process of treating the oil shale in the retort, associated products such as ash and slag are generated, and the ash and slag are usually processed into building materials or directly buried in landfills, so that the resource utilization rate is low, and the environment is also adversely affected to a certain degree. In addition, in the in-situ mining process, a large amount of proppant is often required to support the cracks of the oil shale reservoir, so that the yield is increased, and the cost and the quality of the proppant also influence the yield of in-situ mining to a certain extent.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a comprehensive utilization system of oil shale companion's thing carries out reasonable efficient with oil shale's companion thing and utilizes, reduces the wasting of resources, and the high-usage.
The utility model provides a technical problem as follows.
A comprehensive utilization system of oil shale with biomass comprises a storage bin, a crusher, a vibrating screen, a retort, a circulating fluidized bed boiler, an ash storage bin, an auxiliary material storage bin, a mixing bin, a ball mill, a disc granulator, a dryer, a rotary kiln and a proppant storage bin; the discharge port of the storage bin is connected with the feed inlet of the crusher, the discharge port of the crusher is connected with the feed inlet of the vibrating screen, the qualified material outlet of the vibrating screen is connected with the feed inlet of the retort, the semicoke outlet at the bottom of the retort is connected with the combustion chamber of the circulating fluidized bed boiler, and the ash residue outlet at the bottom of the circulating fluidized bed boiler is connected with the feed inlet of the ash residue storage bin; the discharge port of the ash storage bin, the semicoke outlet at the bottom of the retort and the discharge port of the auxiliary material storage bin are all connected with the feed port of the mixing bin, the discharge port of the mixing bin is connected with the feed port of the ball mill, the discharge port of the ball mill is connected with the feed port of the disc granulator, the granule outlet of the disc granulator is connected with the feed port of the dryer, the discharge port of the dryer is connected with the feed port of the rotary kiln, and the discharge port of the rotary kiln is connected with the feed port of the proppant storage bin; bauxite, fluxing agent and binder are stored in the auxiliary material storage bin. According to the technical scheme, the process steps of crushing, dry distillation, combustion, mixing, granulation and the like are carried out on the mined oil shale, ash and semicoke in the oil shale are used for preparing the high-quality and low-cost propping agent which can be used or sold, the oil shale is treated reasonably and efficiently, and the utilization rate of the oil shale is improved.
Further, the comprehensive utilization system also comprises an oil shale in-situ mining system, wherein the oil shale in-situ mining system comprises a heater and a proppant bin; the discharge hole of the proppant storage bin is connected with the feed inlet of the proppant bin. By adopting the technical scheme, the processed proppant can be used in an oil shale in-situ mining system to play a role in supporting fractures; meanwhile, the proppant has the characteristics of low cost, high strength, low volume density and the like, can be better applied to the in-situ mining process, reduces the mining cost and improves the mining yield.
Further, the comprehensive utilization system also comprises an oil-gas separator, an oil storage tank and a gas storage tank; an oil-gas mixture outlet at the top of the retort is connected with an inlet of an oil-gas separator, an oil product outlet of the oil-gas separator is connected with an oil inlet of the oil storage tank, and a gas outlet of the oil-gas separator is connected with an air inlet of the gas storage tank. By adopting the technical scheme, the oil and the gas in the oil shale can be separated and effectively collected.
Further, the comprehensive utilization system also comprises a combustor; the gas outlet of the gas storage tank is connected with the combustion chamber of the burner, and the heat generated by the burner is respectively connected with the heating devices of the gas retort, the dryer and the rotary kiln through pipelines. By adopting the technical scheme, the heat generated by the combustor is continuously recycled for a plurality of devices in the system, so that the resource utilization rate is increased, and the resource waste is reduced.
Further, the comprehensive utilization system also comprises a heat exchanger and a steam turbine; a high-temperature flue gas outlet of the circulating fluidized bed boiler is connected with a flue gas inlet of a heat exchanger, and a steam outlet of the heat exchanger is connected with a steam inlet of a steam turbine; the power output end of the steam turbine is connected with the power input ends of the ball mill and the disc granulator through wires. By adopting the technical scheme, the high-temperature flue gas generated in the circulating fluidized bed boiler is subjected to heat exchange, and then is used for generating power through the steam turbine and is used for a plurality of devices in the system, so that the utilization rate of resources is further increased, and the utilization of the oil shale is more sufficient.
Further, an unqualified material outlet of the vibrating screen is connected with a feed inlet of the crusher through a belt conveyor. By adopting the technical scheme, the crushing effect of the oil shale raw material is effectively improved, and the waste of the raw material is reduced.
The comprehensive utilization system of the oil shale and the biomass has the advantages that the oil shale is crushed, distilled, burned, mixed and granulated, associated products such as ash and semicoke are effectively recovered, the propping agent for oil shale in-situ mining is prepared, the cost is reduced, and the yield is improved; separating oil and gas obtained by dry distillation, and recycling heat generated by gas combustion to other devices of the system; the high-temperature flue gas generated by the circulating fluidized bed boiler is subjected to heat exchange and further is used for other devices of the system through power generation by doing work; the system can comprehensively recover and utilize the associated substances of the oil shale, and effectively improves the resource utilization rate.
Drawings
Fig. 1 is a schematic structural diagram of the comprehensive utilization system of oil shale with biomass.
The codes in the figures are respectively: the device comprises a storage bin 1, a crusher 2, a vibrating screen 3, a retort furnace 4, a circulating fluidized bed boiler 5, an ash storage bin 6, an auxiliary material storage bin 7, a mixing bin 8, a ball mill 9, a disc granulator 10, a dryer 11, a rotary kiln 12, a proppant storage bin 13, an oil shale in-situ mining system 14, a heater 14-1, a proppant storage bin 14-2, an oil-gas separator 15, an oil storage tank 16, a gas storage tank 17, a combustor 18, a heat exchanger 19 and a steam turbine 20.
Detailed Description
As shown in fig. 1, the comprehensive utilization system of oil shale with biomass comprises a storage bin 1, a crusher 2, a vibrating screen 3, a retort furnace 4, a circulating fluidized bed boiler 5, an ash storage bin 6, an auxiliary material storage bin 7, a mixing bin 8, a ball mill 9, a disc type granulator 10, a dryer 11, a rotary kiln 12, a proppant storage bin 13, an oil shale in-situ mining system 14, a heater 14-1, a proppant storage bin 14-2, an oil-gas separator 15, an oil storage tank 16, a gas storage tank 17, a combustor 18, a heat exchanger 19 and a steam turbine 20; the oil shale in-situ mining system 14 comprises a heater 14-1 and a proppant bin 14-2, the oil shale obtained by mining is stored in the storage bin 1, and bauxite, a fluxing agent and a binding agent are stored in the auxiliary material bin 7.
The discharge gate of storage silo 1 is connected with the feed inlet of breaker 2, the discharge gate of breaker 2 is connected with the feed inlet of shale shaker 3, the qualified material export of shale shaker 3 is connected with the feed inlet of retort 4, the unqualified material export of shale shaker 3 is connected with the feed inlet of breaker 2 through band conveyer, the semicoke export of retort 4 bottom is connected with circulating fluidized bed boiler 5's combustion chamber, the lime-ash export of circulating fluidized bed boiler 5 bottom is connected with the feed inlet of lime-ash storehouse 6.
The discharge hole of the ash storage bin 6, the semicoke outlet at the bottom of the retort furnace 4 and the discharge hole of the auxiliary material storage bin 7 are connected with the feed inlet of the mixing bin 8, the discharge hole of the mixing bin 8 is connected with the feed inlet of the ball mill 9, the discharge hole of the ball mill 9 is connected with the feed inlet of the disc granulator 10, the granule outlet of the disc granulator 10 is connected with the feed inlet of the dryer 11, the discharge hole of the dryer 11 is connected with the feed inlet of the rotary kiln 12, the discharge hole of the rotary kiln 12 is connected with the feed inlet of the proppant storage bin 13, and the discharge hole of the proppant storage bin 13 is connected with the feed inlet of the proppant storage bin.
An oil-gas mixture outlet at the top of the retort 4 is connected with an inlet of an oil-gas separator 15, an oil product outlet of the oil-gas separator 15 is connected with an oil inlet of an oil storage tank 16, a gas outlet of the oil-gas separator 15 is connected with an air inlet of a gas storage tank 17, an air outlet of the gas storage tank 17 is connected with a combustion chamber of a combustor 18, and heat generated by the combustor 18 is respectively connected with heating devices of the retort 4, the dryer 11 and the rotary kiln 12 through pipelines.
A high-temperature flue gas outlet of the circulating fluidized bed boiler 5 is connected with a flue gas inlet of a heat exchanger 19, and a steam outlet of the heat exchanger 19 is connected with a steam inlet of a steam turbine 20; the power output end of the steam turbine 20 is connected to the power input ends of the ball mill 9 and the pan granulator 10 through electric wires.
The utility model discloses the working process of the comprehensive utilization system of oil shale companion's living beings does:
(1) feeding the oil shale obtained by mining into a storage bin 1;
(2) crushing the oil shale in the storage bin 1 through a crusher 2, sieving through a vibrating screen 3, feeding the materials with the consistent particle size into a retort 4, and returning the materials with the inconsistent particle size to the crusher 2 for continuous crushing;
(3) the crushed oil shale is subjected to dry distillation in a dry distillation furnace 4 to generate an oil-gas mixture and a semicoke mixture;
(4) feeding the semicoke mixture generated by the retort 4 into a circulating fluidized bed boiler 5 as fuel for combustion, and feeding the generated ash into an ash storage bin 6; then putting the ash in the ash storage bin 6, the semicoke mixture in the retort 4 and the bauxite, the manganese dioxide as the fluxing agent and the aluminum oxide as the binding agent in the auxiliary material storage bin 7 into a mixing bin 8 in proportion for mixing, then sending into a ball mill 9 for grinding, and then sending into a disc granulator 10 for granulation; drying the obtained pellets in a dryer 11, then sending the pellets into a rotary kiln 12 for sintering to obtain a proppant, and storing the proppant in a proppant storage bin 13;
(5) the proppant in the proppant storage bin 13 is further used in the oil shale in-situ production system 14, i.e. injected into the oil shale reservoir and evenly distributed in the fractures of the reservoir, thereby playing a role in supporting the fractures from closing due to stress release;
(6) sending the oil-gas mixture generated by the retort 4 into an oil-gas separator 15 for separation to generate oil and gas, storing the oil in an oil storage tank 16, and sending the gas into a gas storage tank 17;
(7) gas in a gas storage tank 17 is fed into a combustor 18 for combustion, and the generated heat is respectively fed into heating devices of the gas retort 4, the dryer 11 and the rotary kiln 12 for auxiliary heating of each device;
(8) sending high-temperature flue gas generated by the circulating fluidized bed boiler 5 into a heat exchanger 19, transferring heat to heat transfer working medium water of the heat exchanger 19 after heat exchange, and sending the generated high-temperature steam into a steam inlet of a steam turbine 20 so as to do work and generate electricity; the generated electric energy is used for supplying power to the ball mill 9 and the disc granulator 10.
Claims (6)
1. A comprehensive utilization system of oil shale accompanied substances is characterized by comprising a storage bin (1), a crusher (2), a vibrating screen (3), a retort (4), a circulating fluidized bed boiler (5), an ash storage bin (6), an auxiliary material storage bin (7), a mixing bin (8), a ball mill (9), a disc granulator (10), a dryer (11), a rotary kiln (12) and a propping agent storage bin (13);
the discharge port of the storage bin (1) is connected with the feed port of the crusher (2), the discharge port of the crusher (2) is connected with the feed port of the vibrating screen (3), the qualified material outlet of the vibrating screen (3) is connected with the feed port of the retort furnace (4), the semicoke outlet at the bottom of the retort furnace (4) is connected with the combustion chamber of the circulating fluidized bed boiler (5), and the ash outlet at the bottom of the circulating fluidized bed boiler (5) is connected with the feed port of the ash storage bin (6);
the discharge hole of the ash storage bin (6), the semicoke outlet at the bottom of the retort furnace (4) and the discharge hole of the auxiliary material storage bin (7) are connected with the feed inlet of the mixing bin (8), the discharge hole of the mixing bin (8) is connected with the feed inlet of the ball mill (9), the discharge hole of the ball mill (9) is connected with the feed inlet of the disc granulator (10), the granule outlet of the disc granulator (10) is connected with the feed inlet of the dryer (11), the discharge hole of the dryer (11) is connected with the feed inlet of the rotary kiln (12), and the discharge hole of the rotary kiln (12) is connected with the feed inlet of the proppant storage bin (13);
bauxite, a fluxing agent and a binder are stored in the auxiliary material storage bin (7).
2. The integrated utilization system according to claim 1, further comprising an oil shale in situ mining system (14), the oil shale in situ mining system (14) comprising a heater (14-1) and a proppant bin (14-2); and a discharge hole of the proppant storage bin (13) is connected with a feed inlet of the proppant bin (14-2).
3. The integrated utilization system according to claim 1, further comprising an oil-gas separator (15), an oil storage tank (16), and a gas storage tank (17); an oil-gas mixture outlet at the top of the retort (4) is connected with an inlet of an oil-gas separator (15), an oil product outlet of the oil-gas separator (15) is connected with an oil inlet of an oil storage tank (16), and a gas outlet of the oil-gas separator (15) is connected with an air inlet of a gas storage tank (17).
4. An integrated utilization system according to claim 3, further comprising a combustor (18); and an air outlet of the gas storage tank (17) is connected with a combustion chamber of a combustor (18), and heat generated by the combustor (18) is respectively connected with heating devices of the gas retort (4), the dryer (11) and the rotary kiln (12) through pipelines.
5. The integrated utilization system according to claim 1, further comprising a heat exchanger (19) and a steam turbine (20); a high-temperature flue gas outlet of the circulating fluidized bed boiler (5) is connected with a flue gas inlet of a heat exchanger (19), and a steam outlet of the heat exchanger (19) is connected with a steam inlet of a steam turbine (20); and the power output end of the steam turbine (20) is connected with the power input ends of the ball mill (9) and the disc granulator (10) through electric wires.
6. An integrated utilization system according to claim 1, characterized in that the reject outlet of the vibrating screen (3) is connected to the feed opening of the crusher (2) by means of a belt conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922193837.3U CN211497499U (en) | 2019-12-10 | 2019-12-10 | Comprehensive utilization system of oil shale with biomass |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922193837.3U CN211497499U (en) | 2019-12-10 | 2019-12-10 | Comprehensive utilization system of oil shale with biomass |
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| CN211497499U true CN211497499U (en) | 2020-09-15 |
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| CN201922193837.3U Expired - Fee Related CN211497499U (en) | 2019-12-10 | 2019-12-10 | Comprehensive utilization system of oil shale with biomass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113684046A (en) * | 2021-09-28 | 2021-11-23 | 宁夏回族自治区矿产地质调查院 | Oil shale organic waste catalytic dry distillation equipment and dry distillation process |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113684046A (en) * | 2021-09-28 | 2021-11-23 | 宁夏回族自治区矿产地质调查院 | Oil shale organic waste catalytic dry distillation equipment and dry distillation process |
| CN113684046B (en) * | 2021-09-28 | 2022-07-22 | 宁夏回族自治区矿产地质调查院 | Oil shale organic waste catalytic dry distillation equipment and dry distillation process |
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