阅读说明：本技术 综合火力和可再生能源发电以及炼油的多联产 (Poly-generation of comprehensive thermal power and renewable energy power generation and oil refining ) 是由 俞平 于 2019-10-21 设计创作，主要内容包括：本发明所提供的是一种综合火力和可再生能源发电以及炼油的多联产系统,其包含了IGCC整体煤气化发电、可再生能源发电、电解水制氢、干馏产焦油和加氢裂化产成品油,一实现高效低炭节能的绿色环保生产系统,并且具有较高的投资回报率。(The invention provides a poly-generation system for power generation and oil refining by comprehensive firepower and renewable energy sources, which comprises Integrated Gasification Combined Cycle (IGCC) integrated coal gasification power generation, renewable energy source power generation, hydrogen production by electrolyzed water, tar production by dry distillation and product oil production by hydrocracking, is a green and environment-friendly production system for realizing high efficiency, low carbon and energy conservation, and has higher return on investment.)

1. Synthesize many cogeneration system of firepower and renewable energy electricity generation and oil refining, it includes gasifier, dry distillation jar, tar separator, gas turbine, exhaust-heat boiler, steam turbine, boiler, renewable energy power generation facility, electrolysis water hydrogen plant, hydrogen holding vessel, oxygen holding vessel, and tar hydrocracking unit, and the gasification fuel is solid class fuel, and the gasification furnace and dry distillation jar are sent into to solid fuel, and the gasification furnace has produced hot coal gas through the oxygen deficiency burning, its characterized in that: connecting the hot coal gas to a dry distillation tank filled with solid fuel to produce dry distillation coal gas containing tar, sending the dry distillation coal gas to a tar separation device to separate the tar from the coal gas, connecting the coal gas at the outlet of the tar separation device to a boiler or a gas turbine or a gas engine or converging the hot coal gas at the outlet of a gasification furnace into the dry distillation tank by using a pipeline, and sending semicoke discharged from the dry distillation tank to the gasification furnace or the boiler; or a regenerator is arranged at the semicoke outlet of the dry distillation tank, the semicoke passes through the regenerator and then is sent to a gasification furnace or a boiler, the coal gas passes through a coal gas outlet of a tar separation device and is connected to an inlet of the regenerator, after the coal gas is heated through heat exchange with the semicoke, the coal gas is connected to the boiler or a gas turbine or a gas engine through a coal gas pipe from the outlet of the regenerator or is converged into hot coal gas at the outlet of the gasification furnace and is sent to the dry distillation tank, the coal gas at the outlet of the dry distillation tank is sent to the tar separation device and is sent to a hydrocracking device through the tar obtained by separation, meanwhile, the renewable energy power generation device of the system is connected with an electrolytic water hydrogen production device besides a power grid, the hydrogen and the oxygen are connected to the hydrocracking device for.

2. The integrated thermal and renewable energy power generation and oil refining polygeneration system of claim 1, wherein: the gasification raw material is solid fuel, which comprises any one of bituminous coal, lignite, peat, semicoke, petroleum coke, straw, biomass, waste rubber, waste plastic, organic garbage and other solid fuels containing volatile matters.

3. The integrated thermal and renewable energy power generation and oil refining polygeneration system of claim 1, wherein: the semicoke outlet of the dry distillation tank is connected to the inlet of the gasification furnace, and the semicoke at the outlet of the dry distillation tank in the system is sent into the gasification furnace through the conveying channel to be used for gasifying raw materials, so that the burden of burning the semicoke of the boiler can be reduced.

4. The integrated thermal and renewable energy power generation and oil refining polygeneration system of claim 1, wherein: the heat carrier of the heat regenerator for heating the coal gas is accessed from an external heat source, the coal gas at the outlet of the carbonization tank is connected to the heat regenerator through the tar separation device, and is subjected to heat exchange with the heat carrier to heat up, and then the coal gas at the outlet of the heat regenerator and the coal gas at the outlet of the gasification furnace are connected to the carbonization tank together.

5. The integrated thermal and renewable energy power generation and oil refining polygeneration system of claim 1, wherein: the gasification furnace adopts a circulating fluidized bed, unburned carbon of the circulating fluidized bed is mixed in fly ash and is connected into a dry distillation tank along with coal gas from an outlet or passes through a heat regenerator and then is connected with the dry distillation tank, and through the filtration of a coal layer in the dry distillation tank, the carbon-containing ash in the coal gas is recovered, and particulate matter impurities in the coal gas are reduced.

6. The integrated thermal and renewable energy power generation and oil refining polygeneration system of claim 1, wherein: the coal gas outlet of the retort is connected with the electrostatic dust collector and then connected with the tar separation device, so that the coal gas is further purified by reducing impurities in the coal gas on the basis of filtering most ash in the coal gas by the coal bed of the retort.

7. The integrated thermal and renewable energy power generation and oil refining polygeneration system of claim 1, wherein: the connecting pipeline of the water electrolysis hydrogen production device connected to the hydrocracking oil production device is connected with a hydrogen storage tank, and the hydrogen storage tank is used for stabilizing the air pressure when the hydrogen production rate is changed.

8. The integrated thermal and renewable energy power generation and oil refining polygeneration system of claim 1, wherein: the water electrolysis hydrogen production device is connected with a pipeline of the gasification furnace and is connected with an oxygen storage tank, so as to play a role in stabilizing air pressure when the oxygen production rate of electrolysis changes.

9. The integrated fire and renewable energy power generation and oil refining polygeneration system according to claim 1, wherein: the hydrogen produced by the water electrolysis hydrogen production device and the hydrogen produced by the external hydrogen production device are connected to the hydrocracking device together for producing the product oil, so that the material balance of the hydrocracking oil refining device is facilitated.

10. The integrated fire and renewable energy power generation and oil refining polygeneration system according to claim 1, wherein: the oxygen electrolyzed by the water electrolysis hydrogen production device is connected with the gasification furnace by a pipeline to supply oxygen for gas production or is connected with an air outlet pipeline of the blower to mix into oxygen-enriched air to supply the gasification furnace with air for gas production, and the carbon conversion rate and the coal gas heat value are improved by increasing the oxygen concentration of the gasification agent.

11. The integrated fire and renewable energy power generation and oil refining polygeneration system according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10, wherein: the tar separation device comprises equipment including a water washing tower, an electric tar precipitator and an oil/water separator, wherein a mixed gas outlet of the dry distillation tank is connected with an inlet of the water washing tower, a gas outlet of the water washing tower is connected with an inlet of the electric tar precipitator, an oil/water mixed solution of the water washing tower is connected to the oil/water separator from a liquid outlet, and tar flowing out of the electric tar precipitator and the oil/water separator is sent to the hydrocracking device.

Technical Field

The invention relates to the poly-generation field of comprehensive firepower and renewable energy power generation and oil refining, in particular to the field of balancing the load supply and demand of a power grid, which can provide excellent peak regulation performance, the fuel comprises bituminous coal, lignite, peat, coke, semicoke, petroleum coke, biomass, organic garbage and other solid fuels containing volatile matters, a poly-generation comprehensive production system in a dry distillation gasification device, a hydrocracking oil refining device, a gas turbine power generation device, a steam turbine power generation device, a renewable energy power generation device and an electrolytic water hydrogen production device is adopted, coal gas and tar produced by the dry distillation gasification device are separated, one part of the separated coal gas is sent to a gas turbine for high-efficiency power generation, the other part of the separated coal gas is sent to a boiler for assisting a thermal power generating unit for low-load peak regulation power generation, the tar is sent to the hydrocracking device for producing gasoline, aviation kerosene, diesel oil and other finished oil and the like, and the surplus electric quantity, the hydrogen is used for hydrocracking to produce finished oil, the oxygen is used for gasification furnace to produce coal gas, so that peak shaving power generation of a thermal power plant is supported, low-price solid fuel is converted into higher-price finished oil, and clean coal fuel carbocoal is obtained, and therefore, under the condition of consuming the same fuel, lower harmful gas emission can be achieved, and higher efficiency and product added value than independent coal-fired thermal power plants, renewable energy power plants and oil refineries are obtained.

Background

In some areas with rich renewable energy resources, because the proportion of renewable energy in a power grid is high, a thermal power plant in the power grid is required to have stronger peak regulation capacity, a gasification and dry distillation device for coal is arranged in the system, one part of coal gas is sent to a boiler to support combustion of a thermal power unit for low-load peak regulation power generation, the other part of coal gas is sent to a gas turbine to form integrated gasification combined cycle IGCC high-efficiency power generation, raw coal gas obtained by coal gasification is used for dry distillation of raw coal, not only tar with high added value is obtained, economic benefit is improved, but also particulate matters in the raw coal gas including carbon residue can be filtered, semicoke generated by dry distillation is sent to the coal-fired boiler for combustion, when the volatile matters are not enough, combustion is supported by the coal gas, the system also comprises the renewable energy power generation so as to reduce carbon emission to the atmosphere, certain unstable electric quantity is brought to influence on the power grid in the system, the system is provided with a hydrogen production device by water electrolysis, and a corresponding hydrogen storage tank and an oxygen storage tank, the power grid load fluctuation is slowed down by adjusting the electrolysis speed of hydrogen production and oxygen production, because the gas yield is changed, when redundant hydrogen and oxygen are produced, the redundant hydrogen and oxygen are respectively stored in the storage tanks, when the hydrogen production and oxygen production speed is too low, insufficient supplement is released to absorb the produced tar and hydrogen, a hydrocracking oil refining device is built in the system, the tar and the hydrogen are used as raw materials to produce finished oil such as gasoline, aviation kerosene and diesel oil, and the oxygen is sent to a gasification furnace to increase the gasification strength, so that the semicoke produced by dry distillation can be used for replacing coal to gasify to produce coal gas, thereby forming a poly-production system which takes the coal as fuel, takes electric power and the finished oil as output products, and balances inside various intermediate products and materials.

Disclosure of Invention

Synthesize many cogeneration system of firepower and renewable energy electricity generation and oil refining, it includes gasifier, dry distillation jar, tar separator, gas turbine, exhaust-heat boiler, steam turbine, boiler, renewable energy power generation facility, electrolysis water hydrogen plant, hydrogen holding vessel, oxygen holding vessel, and tar hydrocracking unit, and the gasification fuel is solid class fuel, and the gasification furnace and dry distillation jar are sent into to solid fuel, and the gasification furnace has produced hot coal gas through the oxygen deficiency burning, its characterized in that: connecting the hot coal gas to a dry distillation tank filled with solid fuel to produce dry distillation coal gas containing tar, sending the dry distillation coal gas to a tar separation device to separate the tar from the coal gas, connecting the coal gas at the outlet of the tar separation device to a boiler or a gas turbine or a gas engine or converging the hot coal gas at the outlet of a gasification furnace into the dry distillation tank by using a pipeline, and sending semicoke discharged from the dry distillation tank to the gasification furnace or the boiler; or a regenerator is arranged at the semicoke outlet of the dry distillation tank, the semicoke passes through the regenerator and then is sent to a gasification furnace or a boiler, the coal gas passes through a coal gas outlet of a tar separation device and is connected to an inlet of the regenerator, after the coal gas is heated through heat exchange with the semicoke, the coal gas is connected to the boiler or a gas turbine or a gas engine through a coal gas pipe from the outlet of the regenerator or is converged into hot coal gas at the outlet of the gasification furnace and is sent to the dry distillation tank, the coal gas at the outlet of the dry distillation tank is sent to the tar separation device and is sent to a hydrocracking device through the tar obtained through separation, meanwhile, the renewable energy power generation device of the system is connected with an electrolytic water hydrogen production device, the hydrogen and oxygen are electrolyzed, the hydrogen is connected to.

In the poly-generation system integrating thermal power and renewable energy power generation and oil refining, the gasification raw material is solid fuel, which comprises any one of bituminous coal, lignite, peat, semicoke, petroleum coke, straw, biomass, waste rubber, waste plastic, organic garbage and other solid fuels containing volatile matters.

According to the poly-generation system integrating firepower, renewable energy power generation and oil refining, the semicoke outlet of the dry distillation tank is connected to the inlet of the gasification furnace, and the semicoke at the outlet of the dry distillation tank in the system is sent into the gasification furnace through the conveying channel to be used for gasifying raw materials, so that the burden of burning the semicoke by the boiler can be reduced.

In the polygeneration system integrating thermal power and renewable energy power generation and oil refining, a heat carrier for heating coal gas by a heat regenerator is accessed from an external heat source, the coal gas at the outlet of a carbonization tank is connected to the heat regenerator through a tar separation device, and is subjected to heat exchange with the heat carrier to heat up, and then the coal gas at the outlet of the heat regenerator and the coal gas at the outlet of a gasification furnace are connected to the carbonization tank together.

The gasification furnace adopts a circulating fluidized bed, unburned carbon of the gasification furnace is mixed in fly ash and is connected into a dry distillation tank along with coal gas from an outlet or passes through a heat regenerator and then is connected with the dry distillation tank, and carbon-containing ash in the coal gas is recovered and particulate impurities in the coal gas are reduced through filtering of a coal bed in the dry distillation tank.

According to the poly-generation system integrating firepower, renewable energy power generation and oil refining, the coal gas outlet of the retort is connected with the electrostatic dust collector and then connected with the tar separation device, and on the basis that most of ash in coal gas is filtered out of the coal bed of the retort, impurities in the coal gas are further reduced, and the coal gas is purified.

The poly-generation system integrating firepower, renewable energy power generation and oil refining is characterized in that a hydrogen storage tank is connected to a connecting pipeline of a water electrolysis hydrogen production device and a hydrocracking oil production device, and the hydrogen storage tank is used for stabilizing air pressure when the hydrogen production rate through electrolysis changes.

The poly-generation system integrating firepower, renewable energy power generation and oil refining is characterized in that an oxygen storage tank is connected to a pipeline connecting the water electrolysis hydrogen production device to the gasification furnace, and the oxygen storage tank is used for stabilizing air pressure when the oxygen production rate is changed through electrolysis.

The poly-generation system integrating the firepower and the renewable energy power generation and the oil refining is characterized in that hydrogen produced by the water electrolysis hydrogen production device and hydrogen produced by an external hydrogen production device are connected to the hydrocracking device together for producing the product oil, so that the material balance of the hydrocracking oil refining device is facilitated.

In the polygeneration system integrating thermal power and renewable energy power generation and oil refining, oxygen electrolyzed by the water electrolysis hydrogen production device is connected with an air outlet pipeline of a blower to supply oxygen to the gasifier for gas production, or is connected with the air outlet pipeline of the blower to be mixed into oxygen-enriched air to supply the gasifier with air blowing gas production, and the carbon conversion rate and the coal gas heat value are improved by increasing the oxygen concentration of a gasifying agent.

The combined heat and renewable energy power generation and oil refining poly-generation system is characterized in that a tar separation device of the combined heat and renewable energy power generation and oil refining poly-generation system consists of equipment including a water washing tower, an electric tar precipitator and an oil/water separator, a mixed gas outlet of a dry distillation tank is connected with an inlet of the water washing tower, a gas outlet of the water washing tower is connected with an inlet of the electric tar precipitator, an oil/water mixed solution of the water washing tower is connected to the oil/water separator from a liquid outlet, and tar flowing out of the electric tar precipitator and the oil/water separator is sent to a hydrocracking device.

Advantageous effects

The invention combines Integrated Gasification Combined Cycle (IGCC), coal-fired boiler power generation, tar and product oil production, power grid peak regulation balance, renewable energy power generation and hydrolysis hydrogen production together, not only has higher power generation efficiency, more stable power grid and lower carbon emission, but also can produce product oil with high added value, so that the comprehensive system adopting the process flow has higher economic benefit than a thermal power plant, a renewable energy power plant and an oil refinery which are independently arranged.

Drawings

FIG. 1 shows a poly-generation system for generating electricity and refining oil by combining thermal power and renewable energy sources, which comprises a gasification furnace 1, a dry distillation tank 2, a tar separation device 23, a heat regenerator 5, a desulfurization tower 7, a gas compressor 8, a steam turbine 9, a waste heat boiler 10, a gas fan 12, a power turbine 13, a gas turbine 14, a sewage treatment tank 15, a boiler 16, a renewable energy power generation device 17, an electrolytic water hydrogen production device 18 and a tar hydrocracking device 21, wherein the gasification fuel is solid fuel, the solid fuel is fed into the gasification furnace 1 and the dry distillation tank 2, the gasification furnace 1 generates hot gas by anoxic combustion, the hot gas is connected to the dry distillation tank 2 filled with the solid fuel, the dry distillation of the gas containing tar is generated and fed to an inlet of the tar separation device 23, the gas at an outlet of the tar separation device 23 is purified by the desulfurization tower 7 by a pipeline and then is connected to the boiler 16 or pressurized by the gas compressor 8 and then fed into the gas turbine 14 or is combined with, or firstly connected with a heat regenerator 5, heated by heating, and then merged with hot coal gas at the outlet of a gasification furnace 1 to be connected to a dry distillation tank 2, semicoke discharged from the dry distillation tank 2 is sent to a boiler 16 or sent to the gasification furnace 1 or the boiler 16 after heat exchange and temperature reduction through the heat regenerator 5, coal gas discharged from a desulfurization tower 7 is pressurized and connected to the inlet of the heat regenerator 5 through a fan 12 driven by a steam turbine 13, then is connected to the boiler 16 through a coal gas pipe at the outlet of the heat regenerator 5 or pressurized and sent to a gas turbine 14 through a gas compressor 8, high-temperature flue gas discharged from the gas turbine 14 is connected to a waste heat boiler 10, produced steam is connected with a steam turbine 9, sewage separated by a tar separation device 23 enters a sewage treatment pool 15, concentrated sewage obtained after treatment is merged with oxygen to be sprayed into the gasification furnace 1, purified water is discharged for reuse, the tar obtained after separation is sent to a hydrocracking device 21, the outlet line is connected with a water electrolysis hydrogen production device 18, the electrolyzed hydrogen and oxygen are connected with a hydrocracking device 21 for producing finished oil, and the oxygen is connected with a gasification furnace 1 for gasifying coal gas.

FIG. 2 is a schematic view showing a combined heat and renewable energy power generation and oil refining polygeneration system according to the present invention, in which a semicoke outlet of a retort 2 is connected to an inlet of a gasification furnace 1, and semicoke dry-distilled in the system is introduced into the gasification furnace 1 through a transfer passage for gasification of a feedstock.

Fig. 3 shows a schematic diagram of the polygeneration system for generating power and refining oil by combining thermal power and renewable energy, wherein a heat carrier for heating coal gas by a heat regenerator 5 is accessed from an external heat source, coal gas at the outlet of a retort 2 is connected to the heat regenerator 5 through a tar separation device 23, and after the coal gas at the outlet of the heat regenerator 5 and coal gas at the outlet of a gasification furnace 1 are subjected to heat exchange with the heat carrier and are heated, the coal gas at the outlet of the retort 5 and the coal gas at the outlet of the gasification furnace.

Fig. 4 shows the polygeneration system for generating power and refining oil by combining thermal power and renewable energy, wherein the coal gas outlet of the retort 2 is connected with an electrostatic dust collector 22, and then is connected with a tar separation device 23, and the coal gas is purified by electrostatic dust collection to further reduce particulate impurities and residual liquid drops in the coal gas on the basis that the coal bed of the retort 2 filters part of ash in the coal gas.

Fig. 5 is a schematic diagram of the cogeneration system for integrated thermal power and renewable energy power generation and oil refining of the present invention, in which the hydrogen production device from electrolyzed water 18 is connected to the connecting pipeline of the hydrocracking oil production device 21 and connected to a hydrogen storage tank 20, so as to stabilize the gas pressure when the hydrogen production rate from electrolysis changes.

Fig. 6 is a schematic diagram of the cogeneration system for comprehensive thermal power and renewable energy power generation and oil refining of the present invention, in which the hydrogen production device 18 for electrolyzed water is connected to the pipeline of the gasification furnace 1 and connected to an oxygen storage tank 19 for stabilizing the air pressure when the oxygen production rate by electrolysis changes.

Fig. 7 is a schematic diagram of the cogeneration system for integrated thermal power and renewable energy power generation and oil refining, in which hydrogen electrolyzed by the hydrogen electrolysis unit 18 and hydrogen produced by an external hydrogen production unit are connected together to the hydrocracking unit 21 for product oil production, so as to facilitate material balance of the hydrocracking oil refining unit 21.

FIG. 8 is a schematic diagram of the polygeneration system for integrated thermal power and renewable energy power generation and oil refining of the present invention, in which oxygen electrolyzed by the hydrogen production from water electrolysis device 18 is mixed with air blown by the gasification blower 11 to form oxygen-enriched air, and the oxygen-enriched air is blown to the gasification furnace 1, so as to increase the carbon conversion rate and the calorific value of the produced gas by increasing the oxygen concentration of the gasification agent.

FIG. 9 is a schematic diagram showing a combined heat and renewable energy power generation and oil refining polygeneration system according to the present invention, in which the tar separation apparatus 23 is composed of equipment including a washing tower 3, an electrical tar precipitator 4, and an oil/water separator 6, a mixed gas outlet of the retort 2 is connected to an inlet of the washing tower 3, a gas outlet of the washing tower 3 is connected to an inlet of the electrical tar precipitator 4, an oil/water mixed solution of the washing tower 3 is connected to the oil/water separator 6 from a liquid outlet, sewage separated from the oil/water separator 6 is introduced into a sewage treatment tank 15, and the separated tar and tar captured by the electrical tar precipitator 4 are sent to a hydrocracking apparatus 21.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It is to be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

Note that:

the 'dry distillation tank' refers to a gas heat carrier internal heating type dry distillation tank, and is a container for generating coal gas by dry distillation of solid fuel by using hot gas;

the heat regenerator is a heat exchanger for heating coal gas, and the heat source of the heat exchanger can heat the coal gas by the hot semicoke distilled out or heat the coal gas by a heat carrier input from a heat source other than a retort;

the "water electrolysis hydrogen production device" refers to an electrolysis device capable of decomposing hydrogen and oxygen by inserting electrodes into purified water, and is called a hydrogen production device, but can also produce oxygen

A cogeneration system integrating thermal and renewable power generation and oil refining as illustrated in fig. 1:

the invention relates to a poly-generation system for power generation and oil refining by comprehensive firepower and renewable energy sources, which comprises a gasification furnace 1, a dry distillation tank 2, a tar separation device 23, a heat regenerator 5, a desulfurization tower 7, a gas compressor 8, a steam turbine 9, a waste heat boiler 10, a gas fan 12, a power turbine 13, a gas turbine 14, a sewage treatment tank 15, a boiler 16, a renewable energy source power generation device 17, an electrolytic water hydrogen production device 18 and a tar hydrocracking device 21, wherein the gasification fuel is solid fuel, the solid fuel is fed into the gasification furnace 1 and the dry distillation tank 2, the gasification furnace 1 generates hot gas through anoxic combustion, the hot gas is connected to the dry distillation tank 2 filled with the solid fuel, the dry distillation gas containing tar is produced by utilizing the sensible heat of the gasification furnace gas and is fed to the inlet of the tar separation device 23 to separate the gas, the water and the tar from the outlet of the tar separation device 23 is purified by the desulfurization tower, or the gas is pressurized by a gas compressor 8 and then enters a gas turbine 14 for power generation, or the gas is converged with hot gas at the outlet of a gasification furnace 1 to reduce the temperature to the temperature required by low-temperature carbonization and then enters a carbonization tank 2 for carbonization to obtain low-temperature tar, or the gas is firstly connected with a heat regenerator 5 to heat and then converged with hot gas at the outlet of the gasification furnace 1 and then is connected with the carbonization tank 2, so that the waste heat of semicoke is recovered, the total heat of carbonization gas is increased, and more tar and gas are produced, the semicoke discharged from the carbonization tank 2 is sent to a boiler 16 or is sent to the gasification furnace 1 or the boiler 16 after heat exchange and temperature reduction of the gas by a heat regenerator 5, the gas discharged from a desulfurization tower 7 is pressurized to the inlet of the heat regenerator 5 by a fan 12 driven by a steam turbine 13, is heated after heat exchange with the semicoke and then is connected to the boiler 16 by a gas pipe from the outlet of the heat regenerator 5 or is pressurized by the gas compressor 8, the produced steam is connected with a steam turbine 9 to form combined cycle high-efficiency power generation, the sewage separated by a tar separation device 23 enters a sewage treatment tank 15, the concentrated sewage obtained after treatment is mixed with oxygen and sprayed into a gasification furnace 1, the sewage degradation process is simplified, purified water is discharged for reuse, the tar obtained by separation is sent to a hydrocracking device 21, meanwhile, the system is provided with a renewable energy power generation device 17, the outlet wire of the system is connected with an electrolyzed water hydrogen production device 18, hydrogen and oxygen are electrolyzed in a carbon-free emission mode, the hydrogen is connected to the hydrocracking device 21 for producing finished oil, and the oxygen is connected to the gasification furnace 1 to gasify coal gas.

As shown in fig. 2, in the poly-generation system integrating thermal power and renewable energy power generation and oil refining, the semicoke outlet of the retort 2 is connected to the inlet of the gasification furnace 1:

in the poly-generation system integrating thermal power, renewable energy power generation and oil refining, the semicoke outlet of the dry distillation tank 2 is connected to the inlet of the gasification furnace 1, and the semicoke dried and distilled in the system is input into the gasification furnace 1 through the conveying channel for gasifying raw materials, so that the oxygen content in the gasification agent air of the gasification furnace 1 is increased, and the semicoke with extremely low volatile matter content can be directly gasified, so that more coal is left for dry distillation of tar, and therefore, higher economic benefit is obtained, and meanwhile, the heat value of the coal gas is higher, and the power generation efficiency of the gas turbine 14 is further improved.

In the poly-generation system combining thermal power and renewable energy power generation and oil refining as shown in fig. 3, the heat carrier of the regenerator 5 for heating the gas comes from an external heat source:

the heat carrier of the heat regenerator 5 for heating coal gas is accessed from an external heat source, the coal gas at the outlet of the carbonization tank 2 is connected to the heat regenerator 5 through the tar separation device 23, and after the heat carrier is subjected to heat exchange and temperature rise, the coal gas at the outlet of the heat regenerator 5 and the coal gas at the outlet of the gasification furnace 1 are connected to the carbonization tank 2 together, so that the heat of the carbonization coal gas can be increased by using the external heat source, and the processing capacity of the carbonization coal is increased.

In the polygeneration system integrating firepower and renewable energy power generation and oil refining as shown in FIG. 4, the coal gas outlet of the retort 2 is connected with an electrostatic dust collector 22;

in the poly-generation system for power generation and oil refining by comprehensive firepower and renewable energy sources, the coal gas outlet of the retort 2 is connected with the electrostatic dust collector 22, on the basis that the coal bed of the retort 2 filters part of ash in the coal gas, particulate matter impurities in the coal gas are further reduced, the coal gas is purified, and then the coal gas is connected to the tar separation device 23, so that the ash removal burden of the tar separation device 23 is reduced, and purer tar can be obtained.

As shown in fig. 5, in the poly-generation system combining thermal power and renewable energy power generation and oil refining, a hydrogen storage tank 20 is connected to a connecting pipeline connecting the hydrogen production device 18 to the hydrocracking oil production device 21:

the invention relates to a poly-generation system for power generation and oil refining by comprehensive firepower and renewable energy sources, wherein a hydrogen storage tank 20 is connected to a connecting pipeline of a hydrogen electrolysis device 18 connected to a hydrocracking oil production device 21, and is used for stabilizing air pressure when the hydrogen electrolysis rate changes, when the power in a power grid is surplus, the hydrogen electrolysis device 18 accelerates hydrogen production, the surplus hydrogen is stored in the hydrogen storage tank 20, the surplus power in the power grid is consumed, when the power in the power grid is insufficient, the hydrogen electrolysis device 18 slows down hydrogen production, the power consumption is reduced to maintain the balance of the power grid, and a proper amount of hydrogen is discharged from the hydrogen storage tank 20 to maintain the continuity of the flow of the hydrocracking device 21.

As shown in fig. 6, in the poly-generation system combining thermal power and renewable energy power generation and oil refining, the pipeline connecting the hydrogen production device by water electrolysis 18 to the gasification furnace is connected with an oxygen storage tank 19:

the invention relates to a poly-generation system for power generation and oil refining by combining firepower and renewable energy sources, wherein an electrolytic water hydrogen production device 18 is connected to a pipeline of a gasification furnace 1 and is connected with an oxygen storage tank 19 to play a role in stabilizing air pressure when the electrolytic oxygen production rate is changed, when the electric quantity in a power grid is surplus, the electrolytic water hydrogen production device 18 accelerates oxygen production and stores the surplus oxygen into the oxygen storage tank 19 to consume the surplus electric quantity in the power grid, when the electric quantity in the power grid is insufficient, the electrolytic water hydrogen production device 18 slows down oxygen production to reduce the consumption of the electric quantity to maintain the balance of the power grid, and a proper amount of oxygen is discharged from the oxygen storage tank 19 to maintain the stability of the gasification process of the gasification furnace 1.

In the poly-generation system combining thermal power and renewable energy power generation and oil refining as shown in fig. 7, hydrogen produced by the hydrogen production device 18 by water electrolysis is connected to the hydrocracking device 21 together with hydrogen produced by an external hydrogen production device:

in the poly-generation system integrating firepower and renewable energy power generation and oil refining, hydrogen electrolyzed by the water electrolysis hydrogen production device 18 and hydrogen produced by an external hydrogen production device are connected to the hydrocracking device 21 together for producing the finished oil, and the electricity generated by the renewable energy only is insufficient to meet the requirement of the production load of the hydrocracking device 21 at some time, so that the material balance of the production of the finished oil is achieved by connecting the hydrogen produced by the external hydrogen production device and supplying hydrogen to the hydrocracking device 21 together.

In the polygeneration system combining thermal power and renewable energy power generation and oil refining as shown in fig. 8, the oxygen electrolyzed by the electrolyzed water hydrogen production device 18 is mixed with the air blown by the gasification blower 11 to form oxygen-enriched air to blow to the gasification furnace 1:

in the poly-generation system integrating thermal power, renewable energy power generation and oil refining, oxygen electrolyzed by the water electrolysis hydrogen production device 18 and air blown by the gasification blower 11 are mixed into oxygen-enriched air to blow the gasification furnace 1, so that the oxygen concentration in the air serving as a gasification agent is increased, and higher carbon conversion rate and coal gas heat value can be obtained even if semicoke with extremely low volatile matter content is used as a gasification raw material, so that more coal can be used for dry distillation, more tar can be produced, and the power generation efficiency of the gas turbine 14 can be improved.

In the polygeneration system combining thermal power and renewable energy power generation and oil refining as shown in fig. 9, the tar separation device 23 is composed of equipment including a water washing tower 3, an electrical tar precipitator 4 and an oil/water separator 6:

the invention relates to a poly-generation system for power generation and oil refining by comprehensive firepower and renewable energy sources, wherein a tar separation device 23 comprises equipment comprising a water washing tower 3, an electric tar precipitator 4 and an oil/water separator 6, a mixed gas outlet of a dry distillation tank 2 is connected with an inlet of the water washing tower 3, so that not only is coal gas cleaned, but also tar is separated from the coal gas through water spray chilling, wherein the coal gas is connected with the electric tar precipitator 4 to further remove the tar and then is sent to a desulfurizing tower 7, a mixed solution of water and the tar is precipitated to the bottom of the tower and is discharged into the oil/water separator 6 through a liquid outlet, the separated water flows to a sewage pool 15, and the separated tar and the tar captured by the electric tar precipitator 4 are sent to a hydrocracking device 21 together.