CN117553608A - Zero-carbon system for preparing alcohol chemicals by coupling large-scale energy storage load with new energy - Google Patents

Zero-carbon system for preparing alcohol chemicals by coupling large-scale energy storage load with new energy Download PDF

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Publication number
CN117553608A
CN117553608A CN202311522760.4A CN202311522760A CN117553608A CN 117553608 A CN117553608 A CN 117553608A CN 202311522760 A CN202311522760 A CN 202311522760A CN 117553608 A CN117553608 A CN 117553608A
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outlet
gas
power generation
unit
inlet
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王丹群
吴杰
丁天佐
宋美慧
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
    • C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
    • C07C29/152—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases characterised by the reactor used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
    • C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
    • C07C29/14—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group
    • C07C29/141—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group with hydrogen or hydrogen-containing gases
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/02—Fixed-bed gasification of lump fuel
    • C10J3/20—Apparatus; Plants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
    • F28D2020/0047—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material using molten salts or liquid metals

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention discloses a zero-carbon system for preparing alcohol chemicals by using a large-scale energy storage load coupled new energy, which comprises the following components: the system comprises a power generation unit, a high-temperature energy storage unit and a coal gasification unit, wherein the power generation unit comprises a new energy power generation system and a power grid dispatching system, the new energy power generation system is connected with the power grid dispatching system, a heating device is connected with the power grid dispatching system, wherein an evaporator is provided with a second internal flow passage exchanging heat with a first internal flow passage, the second internal flow passage is provided with a liquid water inlet and a first steam outlet, a steam power generation device is arranged at the first steam outlet, and the steam power generation device is connected with the power grid dispatching system. The zero-carbon system for preparing alcohol chemicals by coupling the large-scale energy storage load with new energy can realize zero-carbon emission while generating stable green electricity and preparing the alcohol chemicals.

Description

Zero-carbon system for preparing alcohol chemicals by coupling large-scale energy storage load with new energy
Technical Field
The invention relates to the technical field of power generation, in particular to a zero-carbon system for preparing alcohol chemicals by coupling new energy sources with large-scale energy storage load.
Background
The new energy has the characteristics of volatility and intermittence, has strong impact on the existing power grid, cannot ensure stable operation of the process, has low new energy utilization rate and has potential safety hazard.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a power generation system capable of reducing carbon emissions while generating stable green electricity.
According to the embodiment of the invention, the zero-carbon system for preparing alcohol chemicals by coupling new energy sources through large-scale energy storage load comprises the following components: the power generation unit comprises a new energy power generation system and a power grid dispatching system, and the new energy power generation system is connected with the power grid dispatching system; the coal gasification device comprises a high-temperature energy storage unit and a coal gasification unit, wherein the high-temperature energy storage unit comprises a heating device, a high-temperature medium storage tank and a steam power generation device, the coal gasification unit comprises an evaporator, the heating device is connected with the power grid dispatching system, a heating channel is arranged in the heating device, an outlet of the heating channel is communicated with the high-temperature medium storage tank, the high-temperature medium storage tank is communicated with an inlet of a first internal flow channel of the evaporator, and an outlet of the first internal flow channel is communicated with an inlet of the heating channel; the evaporator is provided with a second internal flow passage which exchanges heat with the first internal flow passage, the second internal flow passage is provided with a liquid water inlet and a first steam outlet, the steam power generation device is arranged at the first steam outlet, and the steam power generation device is connected with the power grid dispatching system.
According to the zero-carbon system for preparing alcohol chemicals by coupling the large-scale energy storage load with the new energy, the high-temperature energy storage unit and the evaporator are arranged, the high-temperature medium storage tank can be used as a large-scale energy storage load, the power consumption of the energy storage load and the power for power generation and internet surfing can be flexibly regulated by means of the power grid dispatching system, the 'power follow-up' mode is pushed to be converted into the 'power follow-up' mode adapting to the green power characteristics, in particular, water in the second internal flow passage and the high-temperature medium in the first internal flow passage can generate water vapor after heat exchange, so that the steam power generation device can be driven by the water vapor to generate power, and in this way, the energy can be used for replacing fossil energy to generate power, carbon emission is reduced while stable green power is generated, more importantly, the 5G power grid dispatching system can be utilized for reversely transmitting the stable green power to a power grid according to the requirements of an external power grid, flexible regulation of the power grid is realized, the utilization rate of the new energy is improved, and potential safety hazards can be reduced.
In some embodiments, the coal gasification unit further comprises a gasifier provided with a steam inlet in communication with the second steam outlet of the second internal flow passage, a coal inlet, an oxygen inlet, and a mixed gas outlet in communication with the gas recovery system.
In some embodiments, the mixed gas outlet comprises: the gas recovery system comprises a first outlet, the gas recovery system comprises an alcohol chemical preparation unit, the alcohol chemical preparation unit comprises a gas proportion adjusting tank and a synthesis reactor, the first outlet is communicated with an inlet of the gas proportion adjusting tank, and a first gas outlet of the gas proportion adjusting tank is communicated with the synthesis reactor.
In some embodiments, the gas outlet further comprises: the second outlet, the gas recovery system still includes hydrogen preparation unit, hydrogen preparation unit includes synthetic gas conversion equipment and gas separation device, the second outlet with the import intercommunication of synthetic gas conversion equipment, and the export of synthetic gas conversion equipment with gas separation device's first air inlet communicates.
In some embodiments, the gas ratio adjustment tank is provided with a second gas outlet in communication with a second gas inlet of the gas separation device.
In some embodiments, the coal gasification unit further comprises: and the oxygen outlet of the air separation device is communicated with the oxygen inlet of the gasification furnace.
In some embodiments, the gas recovery system further comprises a recycle unit comprising a synthesis ammonia reaction vessel, wherein the nitrogen outlet of the air separation device and the hydrogen outlet of the gas separation device are both in communication with the inlet of the synthesis ammonia reaction vessel.
In some embodiments, the recycling unit further comprises: the outlet of the synthetic ammonia reaction kettle is communicated with the inlet of the urea reaction kettle, and the carbon dioxide outlet of the gas separation device is communicated with the inlet of the urea reaction kettle.
In some embodiments, the recycling unit further comprises: the urea decomposition and condensation device is characterized in that an inlet of the urea decomposition and condensation device is communicated with an outlet of the urea reaction kettle, wherein the urea decomposition and condensation device is provided with a product outlet and a gas outlet, and the gas outlet is communicated with the urea reaction kettle.
In some embodiments, the power generation system comprises a photovoltaic power generation system and/or a wind power generation system.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic illustration of a power generation system in accordance with some embodiments of the invention;
FIG. 2 is a schematic illustration of a power generation system in accordance with further embodiments of the present invention.
Reference numerals:
a zero-carbon system 100 for preparing alcohol chemicals by coupling large-scale energy storage load with new energy,
a power generation unit 10, a power generation system 11, a photovoltaic power generation system 111, a wind power generation system 112, and a grid dispatching system 12;
a high-temperature energy storage unit 20, a heating device 21, a high-temperature medium storage tank 22, a steam power generation device 23, a low-temperature medium storage tank 24,
a coal gasification unit 30, an evaporator 31, an inlet 311 of a first internal flow passage, an outlet 312 of the first internal flow passage, a first steam outlet 313, a second steam outlet 314, a gasification furnace 32, a steam inlet 321, a coal inlet 322, an oxygen inlet 323, a first outlet 324, a second outlet 325, an air separation device 33, an oxygen outlet 331, and a nitrogen outlet 332;
a gas recovery system 40, an alcohol chemical preparation unit 41, a gas proportion adjustment tank 411, a first gas outlet 4111, a second gas outlet 4112, a synthesis reactor 412, a rectifying tower 413, and an alcohol chemical storage tank 414;
a hydrogen production unit 42, a synthesis gas conversion device 421, a gas separation device 422, a first gas inlet 4221, a second gas inlet 4222, a hydrogen outlet 4223, and a carbon dioxide outlet 4224;
the recycling unit 43, the synthetic ammonia reaction kettle 431, the urea reaction kettle 432, the urea decomposition condensation device 433, the product outlet 4331 and the gas outlet 4332.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.
A zero carbon system 100 for large scale energy storage load coupled new energy source preparation of alcohol chemicals in accordance with an embodiment of the present invention is described below in conjunction with fig. 1-2.
A zero carbon system 100 for preparing alcohol chemicals from a large scale energy storage load coupled new energy source according to an embodiment of the present invention comprises: a power generation unit 10, a high temperature energy storage unit 20 and a coal gasification unit 30.
As shown in fig. 1-2, the power generation unit 10 comprises a new energy power generation system 11 and a power grid dispatching system 12, the new energy power generation system 11 is connected with the power grid dispatching system 12, the high-temperature energy storage unit 20 comprises a heating device 21, a high-temperature medium storage tank 22 and a steam power generation device 23, the coal gasification unit 30 comprises an evaporator 31, the heating device 21 is connected with the power grid dispatching system 12, a heating channel is arranged in the heating device 21, an outlet of the heating channel is communicated with the high-temperature medium storage tank 22, the high-temperature medium storage tank 22 is communicated with an inlet 311 of a first internal flow channel of the evaporator 31, and an outlet 312 of the first internal flow channel is communicated with an inlet of the heating channel; the evaporator 31 is provided with a second internal flow passage exchanging heat with the first internal flow passage, the second internal flow passage is provided with a liquid water inlet and a first steam outlet 313, the steam power generation device 23 is arranged at the first steam outlet 313, and the steam power generation device 23 is connected with the power grid dispatching system 12.
Therefore, the high-temperature medium storage tank 22 can be used as a large-scale energy storage load, the power consumption of the energy storage load and the power on the power generation network can be flexibly adjusted by the power grid dispatching system 12, the 'source follow-up' mode is pushed to be converted into the 'source follow-up' mode adapting to the green power characteristic, especially, water in the second internal flow passage and the high-temperature medium in the first internal flow passage can generate water vapor after exchanging heat, so that the vapor power generation device 23 can be driven by the water vapor to generate power, in this way, fossil energy can be replaced to generate power, so that carbon emission is reduced while stable green power is generated, more importantly, the stable green power can be reversely transmitted to a power grid by the 5G power grid dispatching system according to the external power grid requirement, the flexible adjustment of the power grid is realized, the utilization rate of new energy is improved, and the potential safety hazard can be reduced.
For example, as shown in fig. 1-2, a zero carbon system 100 for preparing alcohol chemicals from a large scale energy storage load coupled new energy source includes a power generation unit 10, a high temperature energy storage unit 20, and a coal gasification unit 30.
The power generation unit 10 includes a new energy power generation system 11 and a power grid dispatching system 12, and it should be noted that the new energy power generation system 11 may be a photovoltaic power generation system 111, or a wind power generation system 112, or a hydro power generation system 11, that is, the new energy power generation system 11 uses renewable green energy, so that light energy, wind energy or water energy can be used to generate green electricity, so as to reduce the use of fossil energy, and thus reduce carbon emission.
The power generation system 11 is connected with the power grid dispatching system 12, alternatively, the power grid dispatching system 12 may be a 5G power grid dispatching system, so that the power generated by the power generation system 11 can supply power to the load through the power grid dispatching system 12.
Further, the heating device 21 is connected with the power grid dispatching system 12, a heating channel is arranged in the heating device 21, an outlet of the heating channel is communicated with the high-temperature medium storage tank 22, the high-temperature medium storage tank 22 is communicated with an inlet 311 of a first internal flow channel of the evaporator 31, and an outlet 312 of the first internal flow channel is communicated with an inlet of the heating channel; the evaporator 31 is provided with a second internal flow passage exchanging heat with the first internal flow passage, the second internal flow passage is provided with a liquid water inlet and a first steam outlet 313, the steam power generation device 23 is arranged at the first steam outlet 313, and the steam power generation device 23 is connected with the power grid dispatching system 12.
I.e. the heating channel of the heating device 21, the high temperature medium storage tank 22 and the first inner flow channel of the evaporator 31 constitute a circulation loop of the medium, and optionally, a low temperature medium storage tank 24 is further provided between the first inner flow channel and the heating channel to store the low temperature medium, wherein the medium may be a molten salt medium, a liquid refrigerant, or the like, and is not limited herein.
In this way, the low-temperature molten salt in the low-temperature medium storage tank 24 can enter the heating channel, then the power grid dispatching system 12 can be utilized to supply power to the heating device 21 so as to heat the low-temperature molten salt in the heating channel to form high-temperature molten salt, the high-temperature molten salt enters the high-temperature medium storage tank 22 from the outlet of the heating channel, and then the high-temperature molten salt circulates to the low-temperature medium storage tank 24 in the first internal flow channel through the evaporator 31.
When the high-temperature molten salt flows through the first internal flow passage of the evaporator 31, the heat of the high-temperature molten salt and the liquid water can exchange heat due to the fact that the second internal flow passage of the first internal flow passage can exchange heat with each other, so that the liquid water is heated to form water vapor, then the water vapor can be blown to the steam generating device 23 along the first steam outlet 313 to provide kinetic energy for the steam generating device 23, the steam generating device 23 can generate electricity, and the steam generating device 23 is connected with the grid dispatching system 12, so that continuous stable green electricity can be generated by the steam generating device 23 for power consumption units, and the stable green electricity can be back transmitted to a grid by the grid dispatching system 12 according to the requirements of an external grid, so that flexible adjustment of the grid is achieved.
Optionally, the first vapor outlet 313 may also be in communication with a heating circuit inside the power grid for supplying heat to the heat consuming unit in the process, thereby achieving heat recovery and improving energy utilization.
Therefore, the high-temperature energy storage unit 20 can be utilized to convert electric energy into heat energy for storage, wherein the high-temperature energy storage unit 20 has the advantages of high electric energy storage density, good stability, high electric heating conversion efficiency and low average cost, and 80% of industrial energy in industries such as petrochemical industry and the like is usually presented in a thermal form, the heat energy can be directly utilized, the electric heating conversion efficiency can reach more than 95%, even if the heat energy is further converted into electric energy, the energy conversion efficiency can reach more than 80% by adopting the cascade utilization of steam, and the energy utilization efficiency is improved.
According to the power generation system 11 provided by the embodiment of the invention, the high-temperature medium storage tank 22 can be used as a large-scale energy storage load, and the power consumption of the energy storage load and the power for power generation and internet surfing can be flexibly regulated by the power grid dispatching system 12, so that the 'source follow-up' mode is pushed to be converted into the 'source follow-up' mode adapting to the green electricity characteristic.
When the load of the external power grid is too large, the high-temperature energy storage unit 20 and the evaporator 31 in the process can be adjusted to consume green electricity at the same time, and when the load of the external power grid is too large, the high-temperature energy storage unit 20 can be used for generating electricity and transmitting the electricity to the power grid, so that the effect of peak clipping and valley filling is achieved, and a power grid friendly scheduling system with the function of load follow-up is established. In addition, the novel load provided by the invention has the capacity of absorbing new energy which is usually more than an order of magnitude higher than that of a water-storage power station, so that the power dispatching in the range of Jiwa can be realized in a low-cost manner. The use of green electricity with large scale and low cost is helpful to push the electricity to replace other energy sources and improve the proportion of the electricity in the energy source structure.
In particular, the water in the second internal flow passage and the high-temperature medium in the first internal flow passage can generate steam after heat exchange, so that the steam power generation device 23 can be driven to generate power by means of the steam, and thus, fossil energy can be replaced to generate power, carbon emission is reduced while stable green electricity is generated, more importantly, the stable green electricity can be reversely transmitted to a power grid by using a 5G power grid dispatching system according to the requirements of an external power grid, and flexible regulation of the power grid is realized.
In some embodiments, as shown in fig. 1-2, the coal gasification unit 30 further includes a gasifier 32, the gasifier 32 is provided with a steam inlet 321, a coal inlet 322, an oxygen inlet 323, and a mixed gas outlet, the steam inlet 321 is in communication with the second steam outlet 314 of the second internal flow channel, and the mixed gas outlet is in communication with the gas recovery system 40.
Specifically, coal may be added to gasifier 32 via coal inlet 322, oxygen may enter gasifier 32 via oxygen inlet 323, and water vapor in the second internal flow path may enter gasifier 32 along second vapor outlet 314As such, coal may be used as a feedstock, steam and oxygen may be used as gasification agents to perform chemical reactions to produce raw syngas, which is CO because the molecular formulas of coal, steam and oxygen are mostly carbon and hydrogen 2 CO and H 2 And the like.
Then, the mixed gas is communicated with the gas recovery system 40 through the mixed gas outlet, and the gas recovery system 40 can realize the recovery and utilization of at least one of the above-mentioned crude synthesis gas, thereby reducing the pollution caused by the gas discharged into the atmosphere, and the gas can realize the recovery and utilization, so as to improve the energy utilization rate and reduce the cost.
In some embodiments, as shown in fig. 1-2, the mixed gas outlet comprises: the first outlet 324, the gas recovery system 40 includes an alcohol chemical preparation unit 41, the alcohol chemical preparation unit 41 includes a gas ratio adjustment tank 411 and a synthesis reactor 412, the first outlet 324 is communicated with an inlet of the gas ratio adjustment tank 411, and a first gas outlet 4111 of the gas ratio adjustment tank 411 is communicated with the synthesis reactor 412.
Specifically, the first outlet 324 discharges the mixed gas to the gas ratio adjusting tank 411 to adjust the ratio of different gases, for example, water vapor may be introduced into the gas ratio adjusting tank 411, so that the CO and the water vapor react to generate CO 2 And H 2 The total amount of the introduced water vapor can be regulated and controlled according to the actual generation requirement, thereby realizing CO/H 2 The gas ratio is adjusted and then the gas ratio adjustment tank 411 can control the CO/H entering the synthesis reactor 412 2 To ensure the synthesis reaction to proceed to produce alcohol chemicals, thereby reducing carbon emissions.
Optionally, a rectifying tower 413 and an alcohol chemical storage tank 414 are further connected to the synthesis reactor 412, and the rectifying tower 413 can further purify the alcohol chemical, and the alcohol chemical storage tank 414 can perform a storage function on the alcohol chemical.
In some embodiments, as shown in fig. 1-2, the mixed gas outlet further comprises: the gas recovery system 40 further comprises a hydrogen production unit 42, the hydrogen production unit 42 comprising a synthesis gas conversion device 421 and a gas separation device 422, the second outlet 325 being in communication with the inlet of the synthesis gas conversion device 421, and the outlet of the synthesis gas conversion device 421 being in communication with the first inlet 4221 of the gas separation device 422.
Specifically, the second outlet 325 discharges the above mixed gas to the synthesis gas conversion device 421, then part of the mixed gas can react in the synthesis gas conversion device 421 to reduce emission of harmful gas, and then different gases are separated by the gas separation device 422 to meet subsequent process requirements or realize separate recycling.
In some embodiments, as shown in fig. 1-2, the gas ratio adjustment tank 411 is provided with a second gas outlet 4112, the second gas outlet 4112 being in communication with a second gas inlet 4222 of the gas separation device 422.
Therefore, the gas separation device 422 can be utilized to separate different gases in the gas discharged from the partial gas proportion adjusting tank 411 so as to meet the subsequent process requirements or realize independent recycling.
In some embodiments, as shown in fig. 1, the coal gasification unit 30 further includes: the air separation unit 33, and the oxygen outlet 331 of the air separation unit 33 communicates with the oxygen inlet 323 of the gasification furnace 32.
Thus, by providing the air separation device 33 to separate oxygen in the air by the air separation device 33, the oxygen entering the gasification furnace 32 is purer, so that the chemical reaction in the gasification furnace 32 can be optimized, the possibility of insufficient combustion can be reduced, and the generation of harmful gas can be reduced.
In some embodiments, as shown in fig. 1, the gas recovery system 40 further includes a recycling unit 43, where the recycling unit 43 includes a synthesis ammonia reaction vessel 431, and the nitrogen outlet 332 of the air separation device 33 and the hydrogen outlet 4223 of the gas separation device 422 are both in communication with an inlet of the synthesis ammonia reaction vessel 431.
Specifically, the nitrogen gas separated by the air separation unit 33 and the hydrogen gas discharged by the gas separation unit 422 undergo a synthesis reaction in the ammonia synthesis reaction vessel 431 to form NH 3 Such as ammonia product, nitrogen gas separated from the air separation unit 33 and the gas separation unit The hydrogen exhausted by the device 422 is recycled, so that the emission of polluted gas is reduced, the energy utilization efficiency is improved, and the cost is reduced.
In some embodiments, as shown in fig. 1, the recycling unit 43 further includes: the outlet of the urea reaction kettle 432, the synthetic ammonia reaction kettle 431 is communicated with the inlet of the urea reaction kettle 432, and the carbon dioxide outlet 4224 of the gas separation device 422 is communicated with the inlet of the urea reaction kettle 432.
Specifically, NH synthesized by ammonia synthesis reactor 431 3 And the like, and carbon dioxide (CO) discharged from the gas separation device 422 2 ) The synthesis reaction is performed in the urea reaction vessel 432 to form urea, so that NH synthesized in the ammonia synthesis reaction vessel 431 can be obtained 3 And the ammonia products and the carbon dioxide discharged by the gas separation device 422 are recycled, so that the emission of polluted gas is reduced, the energy utilization efficiency is improved, the cost is reduced, and the carbon emission is reduced.
In some embodiments, as shown in fig. 1, the recycling unit 43 further includes: the urea decomposition condensation device 433, the inlet of urea decomposition condensation device 433 communicates with the export of urea reation kettle 432, and wherein, urea decomposition condensation device 433 is equipped with product outlet 4331 and gas outlet 4332, and gas outlet 4332 communicates with urea reation kettle 432.
Specifically, the melamine product produced in the urea reaction vessel 432 can be discharged from the product outlet 4331, and the unreacted residual gas (NH 3 And/or CO 2 ) The gas outlet 4332 can be returned to the urea reaction kettle 432 again to carry out chemical reaction again, so that the emission of polluted gas can be reduced, the energy utilization efficiency can be improved, the cost can be reduced, and the carbon emission can be reduced.
It should be noted that the conventional coal chemical process in the related art generates a large amount of CO 2 And will directly produce CO during subsequent treatment 2 Emissions, which not only fail to address the serious problem of greenhouse gas emissions, but also can result in significant waste of carbon resources.
In the present invention, the gas recovery system 40 is provided for recovering the gasThe system 40 includes an alcohol chemical preparation unit 41, a hydrogen preparation unit 42, and a recycling unit 43 to utilize CO and H generated in the coal chemical process 2 Preparing alcohol chemicals and CO as byproduct of coal chemical process 2 The waste nitrogen generated by the air separation device 33 is recycled together to prepare chemical products with high added value, so that the cross utilization of resources in the process can be realized, the waste of resources is reduced, and the zero carbon emission of the process can be realized.
In some embodiments, as shown in FIG. 1, the power generation system 11 includes a photovoltaic power generation system 111 and/or a wind power generation system 112.
Specifically, as shown in fig. 1, the power generation system 11 includes a photovoltaic power generation system 111 and a wind power generation system 112, so that new energy sources such as light energy and wind energy can be utilized to generate green electricity simultaneously, thereby improving energy utilization efficiency and being beneficial to increasing the capacity of electric energy.
In the present invention, a zero-carbon process method for preparing green chemical products by using the zero-carbon system 100 for preparing alcohol chemicals by using the large-scale energy storage load coupling new energy is also provided, and the specific process steps are as follows:
step one: renewable energy generates green electricity via a power generation system 11 (e.g., a new energy power generation system 11) and flexibly delivers the green electricity to a load using a grid dispatching system 12 (e.g., a 5G grid dispatching system).
Step two: the green electricity obtained in the first step is absorbed by using a high-temperature energy storage technology, and then the stored heat (the heat absorbed by the molten salt medium in the heating device 21 becomes high-temperature molten salt, and the electric energy of the green electricity is converted into the heat energy of the molten salt) is heated in the evaporator 31 to generate high-temperature and high-pressure water vapor.
Step three: the generated high-temperature high-pressure steam is utilized in a cascade way, and one part of the steam is used for supplying heat to a heat consumption unit in the process; part of the power generation device is used for generating continuous and stable green electricity for the power consumption unit to use, and the stable green electricity can be reversely transmitted to the power grid by utilizing the 5G power grid dispatching system according to the external power grid demand, so that flexible regulation of the power grid is realized; the remaining portion is used as gasification agent for coal gasification.
Step four: the coal gasification unit 30 uses steam and oxygen gas generated by the air separation unit 33 as gasification agents, and coal as a raw material, and produces raw synthesis gas in the gasification furnace 32.
Step five: part of the synthesis gas generated in the fourth step passes through CO/H 2 The mixture is fed into a synthesis reactor 412 for preparing the alcohol green chemical products.
Step six: the rest of the synthesis gas in step four is converted into H by a conversion device (i.e. the synthesis gas conversion device 421) 2 And CO 2 Reuse of CO 2 The purification and separation device (i.e., the gas separation device 422) separates CO 2 And H 2 And (5) separating.
Step seven: the recycling unit 43 collects CO generated in the coal gasification process 2 And the redundant nitrogen generated by the fourth air separation unit 33 is used as a raw material for further reaction to prepare a chemical product with high added value.
The invention adds the high-temperature energy storage unit 20 between the new energy power generation system 11 and the coal chemical unit (namely the coal gasification unit 30 in the invention), takes the high-temperature energy storage coupling coal chemical process as a large-scale energy storage load, flexibly adjusts the power consumption of the energy storage load and the power of the power generation and the internet surfing by means of the 5G power grid dispatching system, and promotes the 'source follow-up' mode to be converted into the 'load follow-up' mode adapting to the green electricity characteristic.
The power generation device of the high-temperature energy storage unit 20 is similar to the power generation principle of a thermal power plant, and is driven by steam to generate mechanical power, but new energy is used for replacing fossil energy, so that stable green electricity is generated, and carbon emission is reduced.
The hydrogen in the invention comes from coal gasification reaction, although CO is generated in the preparation process 2 But CO 2 Can be collected and used as raw materials for preparing high-added-value chemical products, realizes the green hydrogen preparation effect, and simultaneously reduces the preparation cost.
Optionally, CO produced by a coal gasification process 2 And the redundant nitrogen generated by the air separation device 33 can be recycled to prepare chemical products with high added value, so that the resource utilization rate and the economic benefit of the process are improved.
Optionally by adjusting CO/H in the synthesis gas 2 The ratio can be used for preparing green chemical products such as methanol, ethanol, glycol, methyl formate and the like in the synthesis reactor 412, and the methanol, the ethanol and the like can also be used for further preparing hydrocarbon substances so as to promote the development of the fine chemical industry chain.
For example, various embodiments may be included in the present invention, some of which are as follows:
example 1:
as shown in fig. 1, a power grid-friendly zero-carbon system for preparing alcohol chemicals from novel large-scale energy storage load coupled new energy (i.e., a zero-carbon system 100 for preparing alcohol chemicals from large-scale energy storage load coupled new energy), comprising: new energy power generation system 11 for providing unstable green electricity, heating device 21, high temperature medium storage tank 22, evaporator 31, gasification furnace 32, CO/H are sequentially connected to new energy power generation system 11 2 A gas proportion adjusting tank 411, a synthesis reactor 412, a rectifying tower 413, an alcohol chemical storage tank 414 and an air separation device 33, wherein the air separation device 33 is respectively provided with an oxygen outlet 331 and a nitrogen outlet 332, and the oxygen outlet 331 of the air separation device 33 is connected to the oxygen inlet 323 of the gasifier 32; the outlet of the gasification furnace 32 is sequentially connected with a synthetic gas conversion device 421 and CO 2 A purge separation device (gas separation device 422);
the nitrogen outlet 332 of the air separation unit 33 is connected to CO 2 Resource utilization device (recycling unit 43), CO 2 The purifying and separating device is provided with a carbon dioxide outlet 4224 and a hydrogen outlet 4223; CO 2 The carbon dioxide outlet 4224 of the clean-up separation device is connected to the CO 2 And a resource utilization device.
The evaporator 31 is provided with three outlets, one connected with the gasifier 32; a generator unit 23 connected to the steam generator unit for generating stable green electricity; the other is connected to a low temperature medium reservoir 24, and the outlet of the low temperature medium reservoir 24 is connected to the heating device 21.
The new energy power generation system 11 comprises a photovoltaic system and a wind power system; and a 5G power grid dispatching system connected with the photovoltaic system and the wind power system respectively; the 5G grid dispatching system is connected to the heating device 21 and the power generation device.
The evaporator 31 is provided with an inletA water gap, the gasification furnace 32 is provided with a raw material coal inlet; the air separation device 33 is provided with an air inlet. CO/H 2 The gas ratio adjustment tank 411 further includes another connection to CO 2 And an air outlet of the air inlet of the purifying and separating device.
Example 2:
referring to fig. 2, a power grid friendly zero carbon system for preparing alcohol chemicals from new energy sources with new energy storage load coupling (i.e., zero carbon system 100 for preparing alcohol chemicals from new energy sources with new energy storage load coupling), comprising: new energy power generation system 11, high temperature energy storage unit 20, coal gasification unit 30, synthesis gas alcohol production chemical unit, hydrogen production unit 42 and CO 2 A recycling unit (recycling unit 43); the new energy power generation system 11 includes a photovoltaic system (photovoltaic power generation system 111), a wind power system (wind power generation system 112), and a 5G power grid dispatching system; the high-temperature energy storage unit 20 comprises a heating device 21, a high-temperature medium storage tank 22, a low-temperature medium storage tank 24 and a power generation device; the coal gasification unit 30 includes an evaporator 31, a gasification furnace 32, and an air separation device 33; the synthesis gas alcohol chemical preparation unit comprises a CO/H2 gas proportion adjusting tank 411, a synthesis reactor 4122, a rectifying tower 413 and an alcohol chemical storage tank 414; the hydrogen preparation unit 42 includes a synthesis gas conversion device 421 and a CO2 purification separation device 2; the CO2 recycling unit comprises a synthetic ammonia reaction kettle 431, a urea synthesis kettle 2 and a urea decomposition condensation device 433.
The novel zero-carbon system for preparing alcohol chemicals by using the novel large-scale energy storage load coupling new energy source with friendly power grid specifically comprises the following steps: new energy power generation system 11 for providing unstable green electricity, heating device 21, high temperature medium storage tank 22, evaporator 31, gasification furnace 32, CO/H are sequentially connected to new energy power generation system 11 2 A gas proportion adjusting tank 411, a synthesis reactor 412, a rectifying tower 413, and an alcohol chemical storage tank 414;
the system further comprises an air separation device 33, wherein the air separation device 33 is respectively provided with an oxygen outlet 331 and a nitrogen outlet 332, and the oxygen outlet 331 of the air separation device 33 is connected to the oxygen inlet 323 of the gasifier 32; the outlet of the gasification furnace 32 is sequentially connected with a synthetic gas conversion device 421 and CO 2 A purifying and separating device;
air separation unit 33The nitrogen outlet 332 of (2) is sequentially connected to a synthetic ammonia reaction kettle 431, a urea synthesis kettle and a urea decomposition condensation device 433, and the CO2 purification and separation device is provided with a carbon dioxide outlet 4224 and a hydrogen outlet 4223; CO 2 The hydrogen outlet 4223 of the purification and separation device is connected to the synthetic ammonia reaction kettle 431; CO 2 The carbon dioxide outlet 4224 of the clean-up separation device is connected to the urea synthesis tank feed gas inlet. The evaporator 31 is provided with three air outlets, one of which is connected with the gasifier 32; a power generator connected to the power generator for generating a stabilized green power; and the other to the cryogenic medium tank 24. The outlet of the cryogenic medium tank 24 is connected to the heating means 21. The urea decomposition condensation device 433 is connected with a melamine product storage tank. The urea decomposition condensation device 433 is provided with an unreacted gas outlet, and the unreacted gas outlet of the urea decomposition condensation device 433 is connected to the urea synthesis reactor. The energy power generation system 11 comprises a photovoltaic system, a wind power system and a 5G power grid dispatching system which is respectively connected with the photovoltaic system and the wind power system; the 5G grid dispatching system is connected to the heating device 21 and the power generation device. The evaporator 31 is provided with a water inlet; the gasification furnace 32 is provided with a raw material coal inlet; the air separation device 33 is provided with an air inlet. CO/H 2 The gas ratio adjustment tank 411 further includes another connection to CO 2 And an air outlet of the air inlet of the purifying and separating device 2.
Example 3:
with the system of example 2, a power grid friendly zero carbon system for preparing alcohol chemicals from novel large-scale energy storage load coupled new energy (i.e., zero carbon system 100 for preparing alcohol chemicals from large-scale energy storage load coupled new energy), comprising: new energy power generation system 11, high temperature energy storage unit 20, coal gasification unit 30, synthesis gas alcohol production chemical unit, hydrogen production unit 42 and CO 2 And a resource utilization unit.
The specific process method comprises the following steps:
step one: the renewable energy source generates green electricity through the new energy source power generation system 11, and the green electricity is flexibly conveyed to the load by utilizing the 5G power grid dispatching system. The optional new energy sources are solar energy, wind energy, water energy, geothermal energy, ocean energy, biomass energy and the like.
Step two: the green electricity obtained in the first step is absorbed by using a high-temperature energy storage technology, and the stored heat is used for heating water in the heating device 21 to generate high-temperature high-pressure steam. Alternative heat storage technologies include: chemical heat storage, sensible heat storage and phase change heat storage. Chemical heat storage technology comprises methane reforming, ammonia synthesis and decomposition, metal hydroxide and other reactions; sensible heat storage materials include water, heat transfer oil, rock, cast iron, and the like. The phase-change heat storage material can be divided into organic phase-change materials, crystalline hydrated salt, molten salt, metal and alloy, wherein the organic phase-change materials mainly comprise alcohols, paraffin, fatty acid, aromatic hydrocarbons, high-molecular polymer materials and the like; crystalline hydrated salts include alkali and alkaline earth metal halides nitrates, sulfates, acetates, and the like; common molten salts are carbonates, chlorides, nitrates, fluorides; the main phase-change metals are Al, mg, zn, multi-element alloys and the like.
Step three: the generated high-temperature high-pressure steam is utilized in a cascade way, and one part of the steam is used for supplying heat to a heat consumption unit in the process; part of the power generation device is used for generating continuous and stable green electricity for the power consumption unit to use, and the stable green electricity can be reversely transmitted to the power grid by utilizing the 5G power grid dispatching system according to the external power grid demand, so that flexible regulation of the power grid is realized; the remaining portion is used as gasification agent for coal gasification. Alternative power generation devices are generators of the water vapor cycle, organic rankine cycle generators, stirling generators, and the like.
Step four: the coal gasification unit 30 uses steam and oxygen gas generated by the air separation unit 33 as gasification agents, and coal as a raw material, and produces raw synthesis gas in the gasification furnace 32. Optional gasifiers 32 are the enrode, lurgi and fluidized bed gasifiers 32.
Step five: part of the synthesis gas generated in the fourth step passes through CO/H 2 The mixture is fed into a synthesis reactor 412 for preparing the alcohol green chemical products. The selected alcohol green chemical products comprise methanol, ethanol, ethylene glycol and the like, and further can be used for synthesizing chemicals such as dimethyl ether, methyl formate, ethylene, propylene and the like.
Step six: converting the rest synthetic gas into H by a conversion device 2 And CO 2 Reuse of CO 2 CO is purified and separated by a purifying and separating device 2 And H 2 And (5) separating. Optionally, CO 2 The purification and separation method comprises low-temperature methanol washing, pressure swing adsorption, membrane separation, chemical reaction separation and the like.
Step seven: CO 2 The resource utilization unit collects CO generated in the coal gasification process 2 And the redundant nitrogen generated by the fourth air separation unit 33 is used as a raw material for further reaction to prepare a chemical product with high added value. Optionally, CO 2 As one of the industrial basic raw materials, the method can be used for producing about 40 basic chemicals such as methanol, olefin and the like, can be used for producing intermediate products such as medicines, plastics and the like and about 400 intermediate products such as ethylene glycol, ethylenediamine and the like, and can be further used for producing products such as medicines, plastics, building materials and the like and about 4000 end products such as urea, polyethylene and the like.
In the related technology, tens of millions of tons of coal-made natural gas projects are affected by a plurality of factors, and the problems of production and loss of the projects exist in the current coal-made natural gas cost reverse hanging. The invention can improve the economic benefit of the project through the practical production of the whole process. The project is currently constructed for 4 470 tons of steam boilers, the total power consumption is 106 kilowatts according to the principle of 'three standby one', the project can continuously run for 24 hours, and the zero-carbon system 100 for preparing alcohol chemicals by adopting the large-scale energy storage load coupling new energy of the invention, wherein the new energy power generation system 11 and the high-temperature energy storage unit 20 absorb 8 hours of electric energy from the new energy power generation system 11 on average every day, so that the power of the constructed new energy system and the high-temperature energy storage unit 20 is at least 318 kilowatts, thereby realizing the power grid regulation in the range of gigawatts in a low-cost mode, being beneficial to improving the scheduling capability of the existing power grid and improving the bargained price of enterprises in the green electricity market.
The following description of the embodiments will be made with reference to fig. 2.
Step one: the new energy sources of solar energy and wind energy are used for generating green electricity through the new energy power generation system 11, and the green electricity is flexibly conveyed to loads by the 5G power grid dispatching system.
Step two: and (3) absorbing the green electricity obtained in the first step by using an inorganic fused salt energy storage technology, and heating the stored heat in a heat exchanger to generate high-temperature high-pressure water vapor.
Step three: the generated high-temperature high-pressure steam is utilized in a cascade way, and one part of the steam is used for supplying heat to a heat consumption unit in the process; part of the power supply units generate continuous and stable green power by means of a steam turbine for use, and the stable green power can be reversely transmitted to a power grid by utilizing a 5G power grid dispatching system according to the requirements of an external power grid, so that flexible regulation of the power grid is realized; the rest steam is used as gasifying agent for coal gasification, the energy conversion efficiency can reach more than 80%, and the new energy utilization rate is improved.
Step four: the coal gasification unit 30 gasifies crushed coal in a lurgi furnace under pressure using steam and oxygen gas generated by the air separation unit 33 as a gasifying agent and coal as a raw material to prepare raw synthesis gas.
Step five: part of the synthesis gas generated in the fourth step passes through CO/H 2 After the proportion is regulated, the mixture enters a synthesis reactor 412, methanol is synthesized firstly by using the coal-based ethanol technology, and then the green chemical ethanol is prepared through three steps of dehydration, carbonylation and hydrogenation.
Step six: converting the rest synthetic gas into H by a conversion device 2 And CO 2 The CO is washed by low-temperature methanol and flash evaporated from the converted mixed gas 2 And H 2 And (5) separating.
Step seven: h produced in step six 2 The nitrogen generated by the air separation device 33 firstly enters a synthetic ammonia reactor to prepare ammonia, and the generated ammonia further reacts with CO which is a byproduct in the coal gasification process 2 Into a urea synthesis reactor 412 for the preparation of urea, which is subsequently converted to melamine in a decomposition condensation unit. The main components of the tail gas generated in the urea decomposition and condensation process are ammonia and CO 2 The urea can be recycled as a urea synthesis raw material.
It should be noted that the partial structure of the present invention is only used as a preferred embodiment for illustration, and is not meant to be limiting.
In summary, compared with the related art, the invention has at least the following advantages:
(1) The invention constructs a large-scale energy storage load, can flexibly adjust the power consumption of the energy storage load and the power for power generation and internet surfing by means of a 5G power grid dispatching system, promotes the conversion from a 'source follow-up' mode to a 'load follow-up' mode adapting to the green power characteristic, plays the role of 'peak clipping and valley filling', and improves the utilization rate of new energy. In addition, the novel load provided by the invention has the capacity of absorbing new energy which exceeds the capacity of a pumped storage power station by one order of magnitude, so that the power grid dispatching in the range of Jiwa is realized in a low-cost mode.
(2) The alcohol chemicals synthesized by coal gasification can not only realize clean and efficient utilization of coal, but also make up market gaps of partial alcohol products caused by food shortage, and improve economic benefits of coal chemical industry. Further, the synthesized alcohol chemicals can also be used for preparing chemical basic raw materials of esters and olefins, and the development of downstream fine chemical industry is promoted.
(3) The cost of the coal hydrogen production is far lower than that of the current popular water electrolysis hydrogen production, and the energy in the coal hydrogen production process is also from new energy and byproduct CO 2 Is also utilized by resource, and has the advantage of zero hydrocarbon.
(4) Pollutant CO generated in coal gasification process and synthesis gas shift process 2 Is separated and purified, and then is used as a raw material together with the redundant nitrogen generated by the air separation device 33 to prepare high-added-value chemical products, so that the internal cross utilization of the materials is realized, and the zero carbon emission in the whole production process period is realized.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the communication can be mechanical connection, connection or communication; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A zero-carbon system (100) for large-scale energy storage load coupled new energy source preparation of alcohol chemicals, comprising:
The power generation unit (10), the power generation unit (10) comprises a new energy power generation system (11) and a power grid dispatching system (12), and the new energy power generation system (11) is connected with the power grid dispatching system (12);
the coal gasification device comprises a high-temperature energy storage unit (20) and a coal gasification unit (30), wherein the high-temperature energy storage unit (20) comprises a heating device (21), a high-temperature medium storage tank (22) and a steam power generation device (23), the coal gasification unit (30) comprises an evaporator (31), the heating device (21) is connected with a power grid dispatching system (12), a heating channel is arranged in the heating device (21), an outlet of the heating channel is communicated with the high-temperature medium storage tank (22), the high-temperature medium storage tank (22) is communicated with an inlet (311) of a first internal flow channel of the evaporator (31), and an outlet (312) of the first internal flow channel is communicated with an inlet of the heating channel; the evaporator (31) is provided with a second internal flow passage exchanging heat with the first internal flow passage, the second internal flow passage is provided with a liquid water inlet and a first steam outlet (313), the steam power generation device (23) is arranged at the first steam outlet (313), and the steam power generation device (23) is connected with the power grid dispatching system (12).
2. The zero carbon system (100) for preparing alcohol chemicals from a large scale energy storage load coupled new energy source according to claim 1, wherein the coal gasification unit (30) further comprises a gasification furnace (32), the gasification furnace (32) is provided with a steam inlet (321), a coal inlet (322), an oxygen inlet (323) and a mixed gas outlet, the steam inlet (321) is communicated with a second steam outlet (314) of the second internal flow channel, and the mixed gas outlet is communicated with a gas recovery system (40).
3. The zero carbon system (100) for large scale energy storage load coupled new energy source production of alcohol chemicals of claim 2, wherein the mixed gas outlet comprises: the first outlet (324), the gas recovery system (40) comprises an alcohol chemical preparation unit (41), the alcohol chemical preparation unit (41) comprises a gas proportion adjusting tank (411) and a synthesis reactor (412), the first outlet (324) is communicated with an inlet of the gas proportion adjusting tank (411), and a first gas outlet (4111) of the gas proportion adjusting tank (411) is communicated with the synthesis reactor (412).
4. The zero carbon system (100) for large scale energy storage load coupled new energy source production of alcohol chemicals of claim 3, wherein the mixed gas outlet further comprises: -a second outlet (325), the gas recovery system (40) further comprising a hydrogen production unit (42), the hydrogen production unit (42) comprising a synthesis gas conversion device (421) and a gas separation device (422), the second outlet (325) being in communication with an inlet of the synthesis gas conversion device (421), and an outlet of the synthesis gas conversion device (421) being in communication with a first inlet (4221) of the gas separation device (422).
5. The zero carbon system (100) for large scale energy storage load coupled new energy source production of alcohol chemicals according to claim 4, characterized in that the gas ratio adjustment tank (411) is provided with a second gas outlet (4112), the second gas outlet (4112) being in communication with a second gas inlet (4222) of the gas separation device (422).
6. The zero carbon system (100) for large scale energy storage load coupled new energy source production of alcohol chemicals of claim 4, wherein the coal gasification unit (30) further comprises: and the oxygen outlet (331) of the air separation device (33) is communicated with the oxygen inlet (323) of the gasification furnace (32).
7. The zero-carbon system (100) for preparing alcohol chemicals by coupling new energy sources with large-scale energy storage according to claim 6, wherein the gas recovery system (40) further comprises a recovery and utilization unit (43), the recovery and utilization unit (43) comprises a synthetic ammonia reaction kettle (431), and a nitrogen outlet (332) of the air separation device (33) and a hydrogen outlet (4223) of the gas separation device (422) are both communicated with an inlet of the synthetic ammonia reaction kettle (431).
8. The zero carbon system (100) for large scale energy storage load coupled new energy source production of alcohol chemicals of claim 7, wherein the recycling unit (43) further comprises: and the outlet of the synthetic ammonia reaction kettle (431) is communicated with the inlet of the urea reaction kettle (432), and the carbon dioxide outlet (4224) of the gas separation device (422) is communicated with the inlet of the urea reaction kettle (432).
9. The zero carbon system (100) for large scale energy storage load coupled new energy source production of alcohol chemicals of claim 8, wherein the recycling unit (43) further comprises: the urea decomposition condensation device (433), the import of urea decomposition condensation device (433) with the export intercommunication of urea reation kettle (432), wherein, urea decomposition condensation device (433) are equipped with product export (4331) and gas outlet (4332), gas outlet (4332) with urea reation kettle (432) intercommunication.
10. The zero carbon system (100) for large scale energy storage load coupled new energy source production of alcohol chemicals according to any of claims 1-9, characterized in that the power generation system (11) comprises a photovoltaic power generation system (111) and/or a wind power generation system (112).
CN202311522760.4A 2023-11-15 2023-11-15 Zero-carbon system for preparing alcohol chemicals by coupling large-scale energy storage load with new energy Pending CN117553608A (en)

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