CN217875911U - Thermal power plant comprehensive energy disposal and service system with biomass being burnt - Google Patents
Thermal power plant comprehensive energy disposal and service system with biomass being burnt Download PDFInfo
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- CN217875911U CN217875911U CN202221658566.XU CN202221658566U CN217875911U CN 217875911 U CN217875911 U CN 217875911U CN 202221658566 U CN202221658566 U CN 202221658566U CN 217875911 U CN217875911 U CN 217875911U
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Abstract
The utility model discloses a mix thermal power plant's comprehensive energy of burning living beings and deal with and service system, including the unit of unloading, a tub of tape feeder, debris and metal screening unit, no. two tub of tape feeders, silo storage unit, no. three tub of tape feeders, stokehold powder process unit, living beings powder is carried and coupling unit, former thermal power plant fuel system, the powder process system, the boiler, steam turbine, the generator, the factory uses the electric wire netting, public electric wire netting, air separation equipment, electrolysis hydrogen manufacturing equipment, public gas preparation equipment, industrial steam equipment, compression refrigeration plant, absorption refrigeration plant, compression heat pump and heat exchanger, this system can realize mixing the thermal power plant's comprehensive energy of burning living beings and deal with and serve, and the cost is lower.
Description
Technical Field
The utility model relates to a comprehensive energy of thermal power plant deals with and service system, concretely relates to comprehensive energy of thermal power plant who mixes and burn living beings deals with and service system.
Background
At the earliest, the concept of comprehensive energy system was proposed and put into practice in europe, and a great deal of research and practice is developed in the united states, japan, canada, and other countries, in the following directions, such as smart grid, distributed energy, energy system coupling, and collaborative optimization. The energy enterprises in developed countries such as the French ENGIE group, the American Opower energy management company, and the Tokyo electric power company have developed related researches two decades ago. In 2001, a comprehensive energy system development plan is proposed in the united states to promote the progress, popularization and application of distributed energy and combined cooling, heating and power supply technology, and the smart grid and demand side management improve the flexibility of an electric power system as a key development direction. Energy in japan is heavily dependent on imports, and therefore japan has become the first asian country in which comprehensive energy systems have been studied. In order to achieve the goal of greenhouse gas emission reduction, develop a comprehensive energy system, improve energy efficiency and promote the large-scale development of renewable energy sources to become a necessary way, the Japanese Intelligent Community alliance provides community comprehensive energy services (electric power, gas, heat, renewable energy sources and the like).
The comprehensive energy service of China is still in the starting and demonstration stages. At present, the traditional energy industry, such as electric power enterprises, power grid enterprises, gas enterprises, equipment manufacturers, energy-saving service companies, system integrators, professional design houses and the like, plans the comprehensive energy service transformation. The existing comprehensive energy business in China mainly focuses on providing comprehensive energy services with multi-energy complementation of cold, heat, water and electricity in a park, and most comprehensive energy projects of power generation enterprises under construction or put into operation use natural gas as main energy to construct distributed energy stations and provide multi-supply services of electricity, cold, heat, water, gas and the like in an area. The civil enterprises develop comprehensive energy service services such as distributed wind power, distributed photovoltaic and intelligent energy based on the existing services.
The main starting point of the existing comprehensive energy system is on the network side and the user side, and the main technical route is an energy supply system formed by wind and light storage, light storage and charging, various heat pumps, cold accumulation devices and the like. The majority of the developed businesses of domestic power generation enterprises are comprehensive energy services based on natural gas distributed energy stations, but the research on the comprehensive energy services based on the thermal power plant source side is not reported.
The prior art of thermal power plant blended combustion of biomass:
the foreign technology of the thermal power plant for blending and burning biomass is mainly a biomass direct-fired coupling power generation technology, has become a mainstream biomass power generation technology in europe, north america, japan and korea, and is considered as a bridge for the thermal power plant to generate power from coal power to 100% biomass. The great britain has led to the first realization of the conversion of 100% combustion biomass raw materials of large-scale pulverized coal furnaces in 2012, and the biomass energy industry of the large pulverized coal furnaces is closely combined with large-scale infrastructures such as ten thousand tons of ocean-going ships, ports, railway tracks, train transportation, large-scale thermal power plants, power grids, storage bins and the like, and becomes an important clean energy form. The largest biomass power plant great Britain Drax in the world has completed 4 × 660MW × 100% biomass fuel conversion in 2012-2018, the biomass power supply amount of the biomass power plant has exceeded 100 hundred million degrees for 5 years and exceeded 130 hundred million degrees for 3 years, which is equivalent to the sum of the net electricity amount of 30MW small biomass power generating sets typical in hundreds of China. However, all biomass combusted by a large-scale foreign thermal power generating unit is wood particles, and a mature farmland straw biomass power generation project is not available.
At present, the biomass power generation mainly adopts a small pure biomass generator set in China, the unit parameters are low, the coal consumption is high, the biomass power generation cost is high, a large amount of funds need to be taken out from the country every year to carry out financial subsidy, and the large burden of the national financing is caused. In recent years, related domestic enterprises have studied and studied the technical route of biomass gasification coupled power generation, in which biomass is first gasified in a special gasifier, and the generated high-temperature combustible gas is fed into a large boiler to be combusted and generate power. Due to the problems of high construction cost, high operation and maintenance cost, low overall power generation efficiency of fuel, difficult treatment of tar, certain potential safety hazard of high-temperature combustible gas, insufficient policy support and the like, the domestic gasification coupling technology is stopped at the stage of a demonstration project and is not popularized on a large scale.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a mix thermal power plant's comprehensive energy of burning living beings and deal with and service system, this system can realize mixing the thermal power plant's comprehensive energy of burning living beings and deal with and the service, and the cost is lower.
In order to achieve the above object, the integrated energy processing and service system for thermal power plant mixed with burning biomass comprises a discharging unit, a first pipe belt machine, a sundries and metal screening unit, a second pipe belt machine, a silo storage unit, a third pipe belt machine, a stokehole powder-making unit, a biomass powder conveying and coupling unit, a fuel system of an original thermal power plant, a powder-making system, a boiler, a steam turbine, a generator, a plant power grid, a public power grid, an air separation device, an electrolytic hydrogen production device, a public gas preparation device, an industrial steam device, a compression refrigeration device, an absorption refrigeration device, a compression heat pump and a heat exchanger;
the discharging unit is communicated with the inlet of the silo storage unit through a sundries and metal screening unit, a first pipe belt machine and a second pipe belt machine in sequence, and the outlet of the silo storage unit is communicated with the biomass powder conveying and coupling unit through a third pipe belt machine and a stokehole powder making unit;
an outlet of a fuel system of the original thermal power plant is communicated with the biomass powder conveying and coupling unit through a powder making system, and an outlet of the biomass powder conveying and coupling unit is communicated with a burner on a boiler;
the steam outlet of the boiler is communicated with the inlet of the steam turbine, the exhaust steam outlet of the steam turbine is communicated with the industrial steam equipment, the absorption refrigeration equipment and the heat release side of the heat exchanger, the output shaft of the steam turbine is communicated with the driving shaft of the generator, the output end of the generator is connected with a plant power grid and a public power grid, and the plant power grid is connected with the air separation equipment, the electrolytic hydrogen production equipment, the public gas preparation equipment, the compression refrigeration equipment and the compression heat pump.
The discharging unit comprises a discharging workshop and a transfer machine, the sundries and metal screening unit comprises a screening and sundries removing device and a magnetic metal separator, and the discharging workshop is communicated with the inlet of the silo storage unit sequentially through the transfer machine, the first pipe belt machine, the screening and sundries removing device, the magnetic metal separator and the second pipe belt machine.
The silo storage unit comprises a large silo, and a silo discharge screw is arranged at an outlet at the bottom of the large silo.
The stokehole powder-making unit comprises a stokehole small bin and a hammer mill, the biomass powder conveying and coupling unit comprises a pneumatic conveying system and a pulverized coal pipeline, and an outlet of the silo storage unit is communicated with the pulverized coal pipeline through a third pipe belt machine, the stokehole small bin, the hammer mill and the pneumatic conveying system;
the outlet of the fuel system of the original thermal power plant is communicated with a pulverized coal pipeline through a pulverizing system, and the outlet of the pulverized coal pipeline is communicated with a burner on a boiler.
An inerting system is also included; the outlet of the inerting system is communicated with the large silo and the small silo in front of the furnace.
The nitrogen outlet of the air separation plant is communicated with the inlet of the inerting system.
Also includes a heat storage device; the outlet of the compression heat pump, the heat absorption side outlet of the heat exchanger and the heat storage equipment.
Also comprises a cold storage device; the outlet of the compression refrigeration equipment and the outlet of the absorption refrigeration equipment are communicated with the cold storage equipment.
The system further comprises a power storage station, and the power storage station is connected with the public power grid and the plant power grid.
The system also comprises heating equipment and cooling equipment; the outlet of the compression heat pump and the outlet of the heat absorption side of the heat exchanger are communicated with heating equipment; the outlet of the compression type refrigerating equipment and the outlet of the absorption type refrigerating equipment are communicated with the cooling equipment.
The utility model discloses following beneficial effect has:
the comprehensive energy processing and service system for the thermal power plant mixing and burning biomass mixes and burns biomass in a direct-fired coupling mode during specific operation, fully utilizes the advantages of high parameter and ultralow emission of the original coal-fired unit, realizes biomass direct-fired coupling mixing and burning with lower manufacturing cost, effectively reduces carbon emission, and improves the energy utilization level of biomass resources; in addition, the biomass blending combustion proportion is flexibly adjusted by the biomass burner, the biomass is high in volatile component and easy to combust, the biomass blending combustion proportion can be improved under low load, the stable combustion effect of the biomass can be exerted, the thermal load of a hearth is low under low load, the problems of coking, high-temperature corrosion and the like after the biomass is blended and combusted at high proportion are avoided, and the deep peak regulation capability and flexibility of the unit are improved. Meanwhile, the utility model discloses can handle living beings and power supply, can also heat supply, cooling, steam supply, supply public gas, the cost is lower, and the comprehensive energy system peak regulation ability after mixing burning living beings is stronger.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The system comprises a discharge unit 1, a discharge workshop 2, a transfer machine 3, a pipe belt machine 4, an impurity and metal screening unit 5, a screening and impurity removing device 6, a magnetic metal separator 7, a pipe belt machine 8, a silo storage unit 9, a large silo 10, a silo discharge screw 11, a pipe belt machine 12, an inerting system 13, a stokehole powder making unit 14, a small stokehole silo 15, a hammer coal mill 16, a biomass powder conveying and coupling unit 17, a pneumatic conveying system 18, a coal powder pipeline 19, an original thermal power plant fuel system 20, a public gas preparation device 21, a boiler 22, a steam turbine 23, a power generator 24, a power grid for a thermal power plant 25, a public power grid 26, a power storage station 27, a heat storage station 28, an electrolytic hydrogen production device 29, a public gas preparation device 30, an industrial steam equipment 31, a refrigeration device 32, an absorption refrigeration device 33, an absorption refrigeration heat pump 34, a compression heat pump 35, a compression heat exchanger 36, a cold storage device 37, an air separation device 37, a cold supply device 39 and a cold supply device 38.
Detailed Description
In order to make the technical solutions of the present invention better understood, the drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments, and do not limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
The structural schematic according to the disclosed embodiment of the invention is shown in the attached drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the comprehensive energy processing and service system of a thermal power plant mixed with burning biomass includes a discharging unit 1, a first pipe belt machine 4, a sundries and metal screening unit 5, a second pipe belt machine 8, a silo storage unit 9, a third pipe belt machine 12, an inerting system 13, a stokehole pulverizing unit 14, a biomass powder conveying and coupling unit 17, an original thermal power plant fuel system 20, a pulverizing system 21, a boiler 22, a steam turbine 23, a generator 24, a plant power grid 25, a utility power grid 26, a power storage station 27, an air separation plant 28, an electrolytic hydrogen production plant 29, a utility gas preparation plant 30, an industrial steam plant 31, a compression refrigeration plant 32, an absorption refrigeration plant 33, a compression heat pump 34, a heat exchanger 35, a cold storage plant 36, a heat storage plant 37, a cold supply plant 38 and a heating plant 39;
the unloading unit 1 comprises an unloading workshop 2 and a transfer machine 3, the sundries and metal screening unit 5 comprises a screening and sundries removing device 6 and a magnetic metal separator 7, the silo storage unit 9 comprises a large silo 10 and a silo discharging spiral 11, the stokehole powder making unit 14 comprises a stokehole small silo 15 and a hammer coal mill 16, and the biomass powder conveying and coupling unit 17 comprises a pneumatic conveying system 18 and a coal powder pipeline 19;
the unloading workshop 2 is communicated with an inlet of a silo storage unit 9 through a transfer machine 3, a first pipe belt machine 4, a screening and sundries removing device 6, a magnetic metal separator 7 and a second pipe belt machine 8 in sequence, and an outlet of the silo storage unit 9 is communicated with a pulverized coal pipeline 19 through a third pipe belt machine 12, a small stock bin 15 in front of the furnace, a hammer coal mill 16 and a pneumatic conveying system 18;
the outlet of the fuel system 20 of the original thermal power plant is communicated with a pulverized coal pipeline 19 through a pulverizing system 21, and the outlet of the pulverized coal pipeline 19 is communicated with a burner on a boiler 22;
the outlet of the inerting system 13 is communicated with a large silo 10 and a small stokehole silo 15; the steam outlet of the boiler 22 is communicated with the inlet of the steam turbine 23, the exhaust steam outlet of the steam turbine 23 is communicated with the heat release sides of the industrial steam equipment 31, the absorption refrigeration equipment 33 and the heat exchanger 35, the output shaft of the steam turbine 23 is communicated with the driving shaft of the generator 24, the output end of the generator 24 is connected with the plant power grid 25 and the public power grid 26, the power storage station 27 is connected with the public power grid 26, the plant power grid 25 is connected with the power storage station 27, the air separation equipment 28, the electrolytic hydrogen production equipment 29, the public gas preparation equipment 30, the compression refrigeration equipment 32 and the compression heat pump 34, and the nitrogen outlet of the air separation equipment 28 is communicated with the inlet of the inerting system 13;
the outlet of the compression heat pump 34 and the heat absorption side outlet of the heat exchanger 35 are communicated with a heat storage device 37 and a heating device 39; the outlet of the compression refrigeration equipment 32 and the outlet of the absorption refrigeration equipment 33 are in communication with a cold storage equipment 36 and a cold supply equipment 38.
The input medium is biomass and coal, and the output medium is electricity, steam, cold medium and heat medium.
The utility model discloses a concrete working process does:
biomass particle fuel enters an unloading workshop 2 through an automobile, is transferred to a first pipe belt machine 4 from the unloading workshop 2 through a transfer machine 3, the first pipe belt machine 4 sends the biomass particles into a screening and impurity removing device 6 to screen out impurities and large blocks, then enters a magnetic metal separator 7 to remove metal screens in the biomass materials, then enters a large silo 10 through a second pipe belt machine 8, stores the biomass materials through the large silo 10, a silo discharge screw 11 is arranged below the large silo 10, the silo discharge screw 11 takes the biomass particles out of the large silo 10, and then the biomass particles are conveyed to a stokehole powder making unit 14 through a third pipe belt machine 12, then conveyed to a pulverized coal pipeline 19 through a hammer mill 16 through a pneumatic conveying system 18 to be coupled, and finally enter a combustor. As the biomass is inflammable and explosive, a filter element type dust remover is additionally arranged in each sub-unit for removing dust, an inerting system 13 is arranged in a large silo 10 and a small silo 15 in front of a furnace, compressed air for back flushing of the dust remover comes from a raw coal-fired unit, and nitrogen filled in the inerting system 13 comes from an air separation device 28.
The fuel coal and the co-combustion biomass fuel enter the boiler 22 for combustion, so that the chemical energy of the fuel at the input end is converted into heat energy, the circulating working medium is heated to generate high-grade steam, and the high-grade steam enters the steam turbine 23 for acting to drive the generator 24 to generate electricity and generate electric energy. The steam after working is directly extracted from the steam turbine 23 after the grade is gradually reduced to a specific grade, and is supplied to the industrial steam equipment 31, the absorption refrigeration equipment 33, and the heat exchanger 35 in the park through the pipe network.
The electrical energy generated by the generator 24 is directed, in part, to a utility grid 26 and, in part, to a utility grid 25. The electric energy is supplied to an air separation plant 28, an electrolytic hydrogen production plant 29 and a public gas preparation plant 30 in the park for use through a plant power grid 25 to obtain various gas products such as nitrogen, oxygen, hydrogen and the like; it can also be used for compression refrigeration equipment 32 and compression heat pump 34 in the park.
When the thermal power plant needs to carry out deep peak shaving, redundant electric energy generated by the generator 24 is sent to the power storage station 27 through the plant power grid 25 to be used as relay storage; the power storage station 27 may temporarily supply power to the service power grid 25 and the utility power grid 26 when an abnormal shutdown of the thermal power plant occurs.
The compression refrigeration equipment 32 and the absorption refrigeration equipment 33 can jointly produce the cold medium. The cooling medium is supplied to the cooling equipment 38 in the park through a pipe network. And the cold storage equipment 36 is arranged in the pipe network to serve as a buffer, and the balance of cold supply capacity and cold demand capacity in the park is ensured by adjusting the distribution of cold medium flow in the pipe network in real time.
The compression heat pump 34 and the heat exchanger 35 can jointly produce a heat medium. The heat medium is supplied to the heating equipment 39 in the park through the piping network. The heat storage device 37 is arranged in the pipe network to serve as a buffer, and the balance of the park heating capacity and the required heating capacity is guaranteed by adjusting the distribution of the heat medium flow in the pipe network in real time.
It should be noted that, the utility model discloses on the basis of former coal-fired unit of thermal power plant, from carbon emission reduction, improve living beings utilization level, improve the angle of thermal power plant's comprehensive energy service level, realize coal-fired boiler 22's living beings with the mode of direct combustion coupling and mix the burning, utilize former coal-fired unit of thermal power plant, can follow the steam turbine and extract steam, in order to realize steam supply, the heat supply, utilize steam to realize the cooling as the heat source of absorption heat pump, utilize the advantage that the house service cost is low, can be public gas production system, for example empty, supply power such as electrolytic hydrogen, in order to prepare the used public gas in power plant or industrial park.
Claims (10)
1. A thermal power plant comprehensive energy disposal and service system doped with biomass is characterized by comprising a discharging unit (1), a first pipe belt machine (4), a sundries and metal screening unit (5), a second pipe belt machine (8), a silo storage unit (9), a third pipe belt machine (12), a stokehole powder making unit (14), a biomass powder conveying and coupling unit (17), an original thermal power plant fuel system (20), a powder making system (21), a boiler (22), a steam turbine (23), a generator (24), a plant power grid (25), a public power grid (26), an air separation device (28), an electrolysis hydrogen production device (29), a public gas preparation device (30), an industrial steam device (31), a compression refrigeration device (32), an absorption refrigeration device (33), a compression heat pump (34) and a heat exchanger (35);
the discharging unit (1) is communicated with an inlet of a silo storage unit (9) through a sundries and metal screening unit (5), a first pipe belt machine (4) and a second pipe belt machine (8) in sequence, and an outlet of the silo storage unit (9) is communicated with a biomass powder conveying and coupling unit (17) through a third pipe belt machine (12) and a stokehole powder making unit (14);
an outlet of a fuel system (20) of the original thermal power plant is communicated with a biomass powder conveying and coupling unit (17) through a pulverizing system (21), and an outlet of the biomass powder conveying and coupling unit (17) is communicated with a burner on a boiler (22);
the steam outlet of the boiler (22) is communicated with the inlet of the steam turbine (23), the exhaust steam outlet of the steam turbine (23) is communicated with the heat release sides of the industrial steam equipment (31), the absorption refrigeration equipment (33) and the heat exchanger (35), the output shaft of the steam turbine (23) is communicated with the driving shaft of the generator (24), the output end of the generator (24) is connected with the plant power grid (25) and the public power grid (26), and the plant power grid (25) is connected with the air separation equipment (28), the electrolysis hydrogen production equipment (29), the public gas preparation equipment (30), the compression refrigeration equipment (32) and the compression heat pump (34).
2. The comprehensive energy handling and service system for the thermal power plant doped with the biomass as claimed in claim 1, wherein the unloading unit (1) comprises an unloading workshop (2) and a transfer machine (3), the impurity and metal screening unit (5) comprises a screening and impurity removing device (6) and a magnetic metal separator (7), and the unloading workshop (2) is communicated with an inlet of the silo storage unit (9) sequentially through the transfer machine (3), the first pipe belt machine (4), the screening and impurity removing device (6), the magnetic metal separator (7) and the second pipe belt machine (8).
3. The thermal power plant comprehensive energy disposal and service system doped with biomass according to claim 1, wherein the silo storage unit (9) comprises a large silo (10), and a silo discharge screw (11) is arranged at a bottom outlet of the large silo (10).
4. The integrated energy handling and service system for the thermal power plant blended with the burned biomass according to claim 1, wherein the stokehole pulverizing unit (14) comprises a stokehole small bin (15) and a hammer mill (16), the biomass powder conveying and coupling unit (17) comprises a pneumatic conveying system (18) and a pulverized coal pipeline (19), and an outlet of the silo storage unit (9) is communicated with the pulverized coal pipeline (19) through a third pipe belt machine (12), the stokehole small bin (15), the hammer mill (16) and the pneumatic conveying system (18);
the outlet of the fuel system (20) of the original thermal power plant is communicated with a pulverized coal pipeline (19) through a pulverizing system (21), and the outlet of the pulverized coal pipeline (19) is communicated with a burner on a boiler (22).
5. The biomass-blended thermal power plant integrated energy handling and service system as recited in claim 1, further comprising an inerting system (13); the outlet of the inerting system (13) is communicated with the large silo (10) and the small stock bin (15) in front of the furnace.
6. The biomass-doped thermal power plant integrated energy handling and service system according to claim 5, wherein the nitrogen outlet of the air separation plant (28) is in communication with the inlet of the inerting system (13).
7. The integrated biomass-blended energy handling and servicing system for a thermal power plant as recited in claim 1, further comprising a heat storage device (37); an outlet of the compression heat pump (34), an outlet of the heat absorption side of the heat exchanger (35), and a heat storage device (37).
8. The integrated biomass-doped thermal power plant energy handling and service system according to claim 1, further comprising a cold storage facility (36); the outlet of the compression refrigeration equipment (32) and the outlet of the absorption refrigeration equipment (33) are communicated with the cold storage equipment (36).
9. The biomass-blended thermal power plant integrated energy handling and service system according to claim 1, further comprising a power storage station (27), wherein the power storage station (27) is connected to a utility grid (26) and a service grid (25).
10. The integrated energy handling and service system for thermal power plants with blended combustion of biomass as claimed in claim 1, further comprising heating equipment (39) and cooling equipment (38); an outlet of the compression heat pump (34) and an outlet of the heat absorption side of the heat exchanger (35) are communicated with heating equipment (39); the outlet of the compression refrigeration equipment (32) and the outlet of the absorption refrigeration equipment (33) are communicated with the cooling equipment (38).
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