Solar energy and biomass energy recovery system

Abstract

The invention discloses a solar biomass energy recycling system, relates to the technical field of new energy and energy conservation, and discloses the solar biomass energy recycling system which comprises a production module, a processing module and a waste heat recycling module. The production module is connected with the processing module and the waste heat recovery module. The production module is used for receiving biomass energy, converting the biomass energy into heat energy and outputting the heat energy to energy utilization equipment; the production module is further used for generating heat energy emissions in the process of converting the biomass energy into the heat energy; the processing module is used for receiving solar energy and pre-treating the heat energy emissions by using the solar energy to generate pre-treated heat energy emissions; and the waste heat recovery module is further used for receiving the pretreated heat energy emissions, and the pretreated heat energy emissions are converted into energy for utilization. Biomass energy and solar energy are combined, and maximum recovery and utilization of energy are achieved through module design and cooperative utilization.

Description

Technical Field

[0001] This application relates to the fields of new energy and energy conservation technology, and in particular to solar biomass energy recovery systems. Background Technology

[0002] Against the backdrop of global warming and the demand for high-power generation, the development of clean and renewable energy resources is becoming increasingly important as global dependence on fossil fuels decreases and environmental protection becomes more prominent. Compared to fossil fuels, renewable energy sources such as solar, wind, geothermal, and biomass energy are widely used globally, and their utilization rates are continuously improving with technological advancements. Biomass, as a non-fossil fuel, has become a key energy option due to its widespread availability and renewability. Many agricultural and industrial processes generate substantial amounts of waste; effectively utilizing this waste can both address environmental pollution and provide raw materials for energy production. Summary of the Invention

[0003] The main purpose of this application is to provide a solar biomass energy recovery system, which aims to solve the technical problems of existing energy systems generating a large amount of waste and having low energy utilization efficiency.

[0004] To achieve the above objectives, this application proposes a solar biomass energy recovery system, comprising: a production module, a processing module, and a waste heat recovery module; the production module is connected to both the processing module and the waste heat recovery module; the production module receives biomass energy and converts it into heat energy for output to energy-consuming equipment; the production module also generates heat emissions during the conversion of biomass energy into heat energy; the processing module receives solar energy and uses solar energy to pre-treat the heat emissions to generate pre-treated heat emissions; the waste heat recovery module also receives the pre-treated heat emissions and utilizes the energy generated from them.

[0005] In one embodiment, the waste heat recovery module includes: a steam Rankine cycle submodule and an organic Rankine cycle submodule; the steam Rankine cycle submodule is connected to the production module and the organic Rankine cycle submodule respectively; the steam Rankine cycle submodule is used to generate steam from the primary waste heat of pretreated thermal emissions, generate electricity from the steam, and output secondary waste heat to the organic Rankine cycle submodule; the organic Rankine cycle submodule is used to generate organic steam from the secondary waste heat, and generate electricity from the organic steam.

[0006] In one embodiment, the production module includes: a gasifier, a first compressor, a combustion chamber, a high-pressure gas turbine, and a low-pressure gas turbine; the gasifier is connected to the first compressor and the combustion chamber; the combustion chamber is also connected to the high-pressure gas turbine; the high-pressure gas turbine is also connected to the processing module and the low-pressure gas turbine; the first compressor is used to compress air and output the compressed air to the gasifier; the gasifier is used to receive biomass and compressed air to generate syngas and output the syngas to the combustion chamber; the combustion chamber is used to burn the syngas to generate high-temperature, high-enthalpy products that are output to the high-pressure gas turbine; the high-pressure gas turbine is used to receive the high-temperature, high-enthalpy products, provide energy to energy-consuming equipment, and generate primary waste gas; the processing module is used to receive solar energy to heat the primary waste gas; the low-pressure gas turbine is used to receive the heated primary waste gas, provide energy to energy-consuming equipment, and generate secondary waste gas that is output to the waste heat recovery module.

[0007] In one embodiment, the processing module includes: a receiver, a hot storage tank, a first heat exchanger, and a cold storage tank; the receiver is connected to the hot storage tank and the cold storage tank respectively; the first heat exchanger is connected to the hot storage tank, the first heat exchanger, and the cold storage tank respectively; the receiver is used to receive solar energy emitted by the heliostat field and heat the medium in the receiver; the hot storage tank is used to store the heated medium to provide heat energy in real time; the first heat exchanger is used to output the heat energy of the medium to the high-pressure gas turbine to heat the primary exhaust gas; and the cold storage tank is used to store the cooled medium.

[0008] In one embodiment, the steam Rankine cycle submodule includes: a first evaporator, a first turbine, and a thermoelectric generator; the first evaporator is connected to the low-pressure gas turbine, the organic Rankine cycle submodule, the first turbine, and the thermoelectric generator; the first turbine is also connected to the thermoelectric generator; the first evaporator is used to receive primary waste heat generated by secondary exhaust gas, generate water vapor, and output secondary waste heat to the organic Rankine cycle submodule; the first turbine uses the water vapor to generate electricity; the thermoelectric generator receives the energy recovered from the generated water vapor, condenses it into working fluid, and outputs it to the first evaporator through a pump to complete the cycle.

[0009] In one embodiment, the organic Rankine cycle submodule includes: a second evaporator, a second turbine, and a condenser; the second evaporator is connected to the first evaporator, the second turbine, and the condenser; the condenser is also connected to the second turbine; the second evaporator is used to receive secondary waste heat and generate organic vapor; the second turbine uses the organic vapor to generate electricity; the condenser is used to condense the organic vapor after power generation and output it to the second evaporator through a pump to complete the cycle.

[0010] In one embodiment, the system further includes: a hydrogen production module; the hydrogen production module is connected to the waste heat recovery module; the hydrogen production module is used to receive electrical energy converted by the waste heat recovery module and water generated by the solar biomass energy recovery system, and to use the converted electrical energy and water to produce hydrogen.

[0011] In one embodiment, the system further includes: a separation module; the separation module is connected to the hydrogen production module; the separation module is used to perform gas-liquid separation on the hydrogen produced by the hydrogen production module to obtain liquid hydrogen and gaseous hydrogen.

[0012] In one embodiment, the hydrogen production module includes: a proton exchange membrane electrolyzer; the proton exchange membrane electrolyzer is connected to the waste heat recovery module; the proton exchange membrane electrolyzer is used to receive the converted electrical energy and water generated by the solar biomass energy recovery system to generate hydrogen.

[0013] In one embodiment, the separation module includes: a second compressor, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a precooler, a throttling valve, and a separator; the second compressor is connected to the proton exchange membrane electrolyzer, the second heat exchanger, and the third heat exchanger respectively; the precooler is connected to the second heat exchanger, the third heat exchanger, and the fourth heat exchanger respectively; the fourth heat exchanger is also connected to the separator through the throttling valve; the second compressor is used to compress the hydrogen gas produced by the proton exchange membrane electrolyzer and separate the hydrogen gas into... First hydrogen and second hydrogen are produced. The first hydrogen is output to the second heat exchanger and cooled by cold steam returned from the separator. The second hydrogen is output to the third heat exchanger and cooled by nitrogen steam. The second and third heat exchangers output the cooled hydrogen to the liquid nitrogen bath of the precooler. The precooler outputs the precooled hydrogen to the fourth heat exchanger for further cooling. The fourth heat exchanger generates high-pressure hydrogen and passes through the throttling valve into a two-phase state before being output to the separator. The separator separates the liquid hydrogen from the gaseous hydrogen.

[0014] One or more technical solutions proposed in this application have at least the following technical effects:

[0015] By using biomass raw materials to produce fuel and generate heat energy for work, the resulting waste heat is pretreated and then recovered, reducing environmental pollution from heat emissions. In the waste heat recovery process, the collaborative operation of two circulation sub-modules enables the system to more effectively recover and utilize the residual heat in the pretreated emissions, achieving multi-stage utilization and thus effectively utilizing waste and improving energy efficiency. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A structural block diagram provided for Embodiment 1 of the solar biomass energy recovery system of this application;

[0019] Figure 2 A structural block diagram provided for Embodiment 2 of the solar biomass energy recovery system of this application;

[0020] Figure 3 This is a diagram showing the equipment connection of one embodiment of the solar biomass energy recovery system provided in Embodiment 2 of this application.

[0021] Figure 4 This is a diagram showing the equipment connection of another embodiment of the solar biomass energy recovery system provided in Embodiment 2 of this application.

[0022] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0024] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0025] In existing technologies, energy production systems generate a large amount of waste and have low energy utilization rates. This waste includes, but is not limited to: coal mining waste: such as gangue, coal slime, coal washing wastewater, coal gangue, and fly ash. These wastes are enormous in quantity and contain harmful substances such as heavy metals and sulfides, posing serious threats to the environment and human health. Oil extraction waste: including oilfield wastewater, drilling fluids, oil sludge, and oil tank bottom sludge. These wastes are characterized by high toxicity, severe pollution, and difficulty in treatment, causing pollution to water bodies, soil, and the atmosphere. Natural gas extraction waste: natural gas well produced fluids and gases contain large amounts of hydrocarbon compounds, water, salts, heavy metals, and other harmful substances, also posing threats to the environment and human health. Nuclear power generation waste: including spent nuclear fuel, radioactive wastewater, and radioactive solid waste. These wastes contain large amounts of radioactive materials, posing a significant potential threat to the environment and human health. In addition, agricultural and industrial processes also generate a large amount of waste containing abundant biomass energy. Therefore, direct disposal poses a challenge to the environment and sustainable development, and the energy utilization rate is also very low.

[0026] Based on this, and to address the technical problems of existing energy systems generating large amounts of waste and having low energy utilization rates, this application proposes a solar-biomass energy recovery system. Please refer to... Figure 1 , Figure 1 This is a structural block diagram of an embodiment of the solar biomass energy recovery system of this application.

[0027] In this embodiment, the solar biomass energy recovery system mainly consists of three modules: a production module 10, a processing module 20, and a waste heat recovery module 30. These modules, through specific connections and cooperation, enable the efficient recovery and utilization of biomass energy and solar energy.

[0028] The production module 10 is connected to the processing module 20 and the waste heat recovery module 30, respectively.

[0029] It should be noted that the production module 10 is used to receive biomass energy and convert it into heat energy for output to energy-consuming equipment; it receives biomass energy as input, converts it into heat energy or mechanical energy through some means (such as combustion, fermentation, etc.), and outputs the converted heat energy to energy-consuming equipment to meet energy demand. Typically, the process of converting biomass energy into heat energy will generate heat emissions such as waste gas and waste residue.

[0030] It should be noted that the processing module is used to receive solar energy and use solar energy to pre-treat the thermal emissions, generating pre-treated thermal emissions. The processing module 20 receives solar energy as input, which may be achieved through devices such as solar collectors and photovoltaic panels.

[0031] Understandably, pretreatment of thermal emissions using solar energy typically involves steps such as heating, drying, and purification, aiming to improve the quality or energy density of the emissions. This pretreated thermal emissions prepare the environment for subsequent energy recovery.

[0032] It should be noted that the waste heat recovery module is also used to receive the pretreated thermal emissions and convert them into energy for utilization. Using some energy conversion technology (such as a heat engine or heat pump), the energy in the pretreated thermal emissions is converted into usable energy forms (such as electricity or heat). The converted energy is then output to the outside of the system or used for other energy needs within the system.

[0033] In addition, the waste heat recovery module 30 and the production module 10 can be indirectly connected, for example, by using the recovered energy to provide part of the energy input to the production module, forming a closed-loop system.

[0034] In one feasible implementation, the waste heat recovery module 30 includes a steam Rankine cycle submodule and an organic Rankine cycle submodule. The steam Rankine cycle submodule is connected to both the production module 10 and the organic Rankine cycle submodule.

[0035] The steam Rankine cycle submodule is used to generate steam from the primary waste heat of the pretreated thermal emissions, generate electricity from the steam, and output secondary waste heat to the organic Rankine cycle submodule.

[0036] Understandably, the steam Rankine cycle submodule receives pretreated thermal emissions from processing module 20. The primary waste heat in the pretreated thermal emissions is used to generate steam. This step typically involves a heat exchange process where heat from the thermal emissions is transferred to the working medium (such as water), causing it to evaporate into steam. The generated steam is used to drive a steam turbine or similar thermodynamic machinery to generate electricity. During power generation, the steam releases most of its thermal energy, converting it into mechanical energy, and subsequently into electrical energy. The remaining secondary waste heat is then output to the organic Rankine cycle submodule.

[0037] The organic Rankine cycle submodule is used to generate organic steam using the secondary waste heat, and then use the organic steam to generate electricity.

[0038] Understandably, the organic Rankine cycle submodule receives secondary waste heat from the steam Rankine cycle submodule. This waste heat is used to heat and evaporate an organic compound (typically a low-boiling-point organic fluid), generating organic vapor. This organic vapor is then used to drive another thermodynamic machine (such as an organic Rankine cycle turbine) to generate electricity. In this process, the organic vapor also releases its thermal energy, converting it into mechanical energy, and ultimately into electrical energy.

[0039] In addition, the Organic Rankine Cycle submodule can be connected to other system components (such as power storage devices, grid connections, etc.) to output the generated electrical energy for external use or storage.

[0040] In this embodiment, biomass raw materials are used to produce fuel to provide heat energy for work. The generated waste heat is then pretreated and recovered, reducing environmental pollution from the heat emissions. In the waste heat recovery process, the collaborative operation of two circulation sub-modules enables the system to more effectively recover and utilize the residual heat in the pretreated emissions, achieving multi-stage utilization and thus effectively utilizing waste and improving energy efficiency.

[0041] Furthermore, based on the above, this application provides a structure that further utilizes the energy generated by the waste heat recovery module 30 to improve system efficiency, while simultaneously producing hydrogen at the end of the recovery system to achieve clean energy production and improve the economic structure of the energy system. Please refer to [link to relevant documentation]. Figure 2 , Figure 2 This is a structural block diagram of Embodiment 2 of the solar biomass energy recovery system of this application.

[0042] In this embodiment, the system further includes a hydrogen production module 40, which is connected to the waste heat recovery module 30.

[0043] It should be noted that the hydrogen production module 40 is used to receive the energy converted by the waste heat recovery module and use the converted energy to produce hydrogen. The hydrogen production method can be water electrolysis, using the electrical energy generated by the waste heat recovery module 30 to drive the water electrolysis device to produce hydrogen. This is a clean and efficient method for hydrogen production.

[0044] Understandably, in order to further improve efficiency, high-temperature water electrolysis technology can be considered, that is, electrolysis is carried out at high temperatures (such as 200-800℃), which can reduce the voltage required for electrolysis and improve the electrolysis efficiency.

[0045] It should be noted that thermochemical hydrogen production can also be used, which involves using thermal energy at high temperatures (typically exceeding 800°C) to decompose certain chemicals (such as water vapor, methane, etc.) into hydrogen and other products. The high-temperature waste heat in the waste heat recovery module 30 can provide the necessary thermal energy for this process.

[0046] Furthermore, the produced hydrogen can be stored through compression, liquefaction, or in solid hydrogen storage materials. This hydrogen can then be used in fuel cell power generation, transportation (such as hydrogen-powered vehicles), and as a chemical feedstock, further improving the economic structure and promoting sustainable development.

[0047] In addition, the system also includes a separation module 50; the separation module is connected to the hydrogen production module 40.

[0048] It should be noted that the separation module 50 is used to perform gas-liquid separation on the hydrogen produced by the hydrogen production module 40 to obtain liquid hydrogen and gaseous hydrogen. Through gas-liquid separation technology, hydrogen is separated into liquid hydrogen and gaseous hydrogen. Liquid hydrogen has a higher energy density and a smaller storage volume, making it suitable for long-distance transportation and long-term storage; while gaseous hydrogen is easier to transport in pipelines and used in certain applications. The separation process may involve equipment such as compressors, condensers, and separators, which separate hydrogen from a mixed state into liquid and gaseous states.

[0049] Specifically, based on the above embodiments, this application provides the specific selection and connection relationships of each module. Please refer to [link / reference]. Figure 3 and Figure 4 , Figure 3 This is a diagram showing the equipment connection of one embodiment of the solar biomass energy recovery system provided in Embodiment 2 of this application. Figure 4 This is a diagram showing the equipment connection of another embodiment of the solar biomass energy recovery system provided in Embodiment 2 of this application.

[0050] In this embodiment, the production module 10 includes: a gasifier, a first compressor, a combustion chamber, a high-pressure gas turbine, and a low-pressure gas turbine; the gasifier is connected to the first compressor and the combustion chamber respectively; the combustion chamber is also connected to the high-pressure gas turbine; the high-pressure gas turbine is also connected to the processing module and the low-pressure gas turbine respectively.

[0051] It should be noted that the first compressor is used to compress air and output the compressed air to the gasifier as an oxidant in the gasification process. The gasifier is used to receive biomass and compressed air to generate syngas and output the syngas to the combustion chamber; generally speaking, the main components of syngas are carbon monoxide, hydrogen and a small amount of combustible gases such as methane.

[0052] It should be noted that the combustion chamber is used to burn the syngas. During the combustion process, a compressor is also required to compress the air. In this embodiment, a compressor, an intercooler and a compressor structure are used to generate secondary compressed air, which mixes with the syngas and undergoes an oxidation reaction to generate high-temperature and high-enthalpy products that are output to the high-pressure gas turbine. At the same time, the water produced by the intercooler can also be reused. This part of the water contains a certain amount of heat due to energy exchange and can be used for heating.

[0053] It should be noted that the high-pressure gas turbine is used to receive high-temperature and high-enthalpy products, and to convert thermal energy into mechanical energy by using the expansion of high-temperature and high-pressure steam to provide energy to energy-consuming equipment (such as generators), and to generate primary exhaust gas, which mainly consists of low-pressure steam and combustion exhaust gas.

[0054] It should be noted that the processing module is used to receive solar energy to heat the primary exhaust gas, thereby increasing the energy density of the primary exhaust gas; the low-pressure gas turbine is used to receive the heated primary exhaust gas, use the thermal energy to do work, convert the remaining thermal energy into mechanical energy to provide energy to the energy-consuming equipment, and generate secondary exhaust gas to be output to the waste heat recovery module 30. The secondary exhaust gas is exhaust gas with lower temperature and energy.

[0055] In this embodiment, the processing module 20 includes: a receiver, a hot storage tank, a first heat exchanger, and a cold storage tank; the receiver is connected to the hot storage tank and the cold storage tank respectively; the first heat exchanger is connected to the hot storage tank, the first heat exchanger, and the cold storage tank respectively.

[0056] It should be noted that the receiver is used to receive solar energy emitted by the heliostat field and heat the medium in the receiver; the thermal storage tank is used to store the heated medium to provide heat energy in real time; the first heat exchanger is used to output the heat energy of the medium to the high-pressure gas turbine to heat the primary exhaust gas; and the cold storage tank is used to store the cooled medium.

[0057] Understandably, the medium heated by solar energy in the receiver can be selected from materials such as heat transfer oil or molten salt. The receiver is connected to both a hot storage tank and a cold storage tank to transport the heated medium to the hot storage tank or the cooled medium back to the cold storage tank.

[0058] Understandably, the primary exhaust gas is heated and the medium is cooled. The heated primary exhaust gas is sent back to the high-pressure or low-pressure gas turbine for further utilization, while the cooled medium is sent to a cold storage tank.

[0059] In addition, the hot storage tank can be connected to the first heat exchanger via a pump, and the first heat exchanger can be connected to the cold storage tank via a pump to realize the transportation of fluid media.

[0060] In this embodiment, the steam Rankine cycle submodule includes: a first evaporator, a first turbine, and a thermoelectric generator; the first evaporator is connected to the low-pressure gas turbine, the organic Rankine cycle submodule, the first turbine, and the thermoelectric generator; the first turbine is also connected to the thermoelectric generator.

[0061] It should be noted that the first evaporator is used to receive the primary waste heat generated by the secondary exhaust gas, generate water vapor, and output the secondary waste heat to the organic Rankine cycle submodule; the first turbine uses the water vapor to generate electricity; the thermoelectric generator receives the energy recovered from the water vapor after power generation, and condenses the working fluid and outputs it to the first evaporator through a pump to complete the cycle.

[0062] In this embodiment, the organic Rankine cycle submodule includes: a second evaporator, a second turbine, and a condenser; the second evaporator is connected to the first evaporator, the second turbine, and the condenser; the condenser is also connected to the second turbine.

[0063] It should be noted that the second evaporator is used to receive secondary waste heat and generate organic vapor; the second turbine uses the organic vapor to generate electricity; and the condenser is used to condense the organic vapor after power generation and output it to the second evaporator through a pump to complete the cycle.

[0064] In this embodiment, the hydrogen production module 40 includes: a proton exchange membrane electrolyzer; the proton exchange membrane electrolyzer is connected to the waste heat recovery module.

[0065] It should be noted that the proton exchange membrane electrolyzer is used to receive the converted electrical energy and the water generated by the solar biomass energy recovery system to generate hydrogen.

[0066] It should be noted that this embodiment involves multiple water cycles, and the water generated in each water cycle of the solar biomass energy recovery system can be selected as raw material according to needs. Furthermore, this embodiment uses water generated by the intercooler in the structure that receives secondary compressed air in the combustion chamber as raw material, further forming a closed loop in the system and achieving self-sufficiency.

[0067] Understandably, the proton exchange membrane electrolyzer receives energy from the waste heat recovery module, which could be thermal or electrical energy, depending on the output form of the waste heat recovery module. Based on the above, it uses electrical energy generated by a turbine to electrolyze water into hydrogen and oxygen using the proton exchange membrane. During electrolysis, the energy provided by the waste heat recovery module drives the electrolysis reaction. Hydrogen is generated as the main product, and oxygen may be produced as a byproduct.

[0068] In this embodiment, the separation module 50 includes: a second compressor, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a precooler, a throttling valve, and a separator; the second compressor is connected to the proton exchange membrane electrolyzer, the second heat exchanger, and the third heat exchanger respectively; the precooler is connected to the second heat exchanger, the third heat exchanger, and the fourth heat exchanger respectively; the fourth heat exchanger is also connected to the separator through the throttling valve.

[0069] In addition, a mixer can be connected between the proton exchange membrane electrolyzer and the second compressor. The mixer is also connected to the second heat exchanger. By receiving the fluid returned from the second heat exchanger and mixing it with the fluid output from the proton exchange membrane electrolyzer, the uniformity and stability of the fluid are ensured to achieve a circulation process, avoid the waste of hydrogen, and help improve the overall efficiency and resource utilization of the system.

[0070] It should be noted that the second compressor is used to compress the hydrogen produced by the proton exchange membrane electrolyzer, and separate the hydrogen into first hydrogen and second hydrogen. The first hydrogen is output to the second heat exchanger for cooling by cold steam returned from the separator, and the second hydrogen is output to the third heat exchanger for cooling by nitrogen vapor. The second and third heat exchangers output the cooled hydrogen to the liquid nitrogen bath of the precooler. The precooler outputs the precooled hydrogen to the fourth heat exchanger for further cooling. The fourth heat exchanger generates high-pressure hydrogen and passes through the throttling valve into a two-phase state before being output to the separator. The separator separates the liquid hydrogen from the gaseous hydrogen.

[0071] Understandably, the hydrogen produced in the proton exchange membrane electrolyzer is fed into the second compressor for compression. The compressed hydrogen is separated into first hydrogen and second hydrogen, which are then cooled in the second and third heat exchangers, respectively. The cooled hydrogen enters the precooler for deep cooling. The precooled hydrogen then enters the fourth heat exchanger for further cooling and expansion, generating high-pressure hydrogen. The high-pressure hydrogen is then throttled through a throttling valve to reduce its pressure and temperature, promoting liquefaction. It then enters the separator in a two-phase state for separation. The separator utilizes the density difference of hydrogen to output liquid hydrogen and gaseous hydrogen separately.

[0072] Understandably, staged cooling also provides new possibilities for energy recovery and utilization. For example, after the nitrogen in the precooler cools the mixed gas, the cooling capacity decreases and enters the third heat exchanger to cool a portion of the mixed gas, realizing the multiple utilization of the nitrogen cooling capacity.

[0073] In this embodiment, by selecting specific equipment for the production module 10, processing module 20, waste heat recovery module 30, hydrogen production module 40, and separation module 50, a solar biomass energy recovery system is built. The biomass energy is recovered and reused through a gasifier to generate by-product waste gas. The energy density of the waste gas is increased through solar energy. The waste gas heat energy is further converted into other energy sources through two Rankine cycles. High-quality hydrogen is then separated through a proton exchange membrane electrolyzer and a separator. This not only achieves efficient conversion and utilization of biomass energy, but also recovers and utilizes waste heat resources, improving the system's energy utilization efficiency and economy.

[0074] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A solar biomass energy recovery system, characterized in that, The system includes: a production module, a processing module, and a waste heat recovery module; The production module is connected to the processing module and the waste heat recovery module, respectively. The production module is used to receive biomass energy and convert it into heat energy for output to energy-consuming equipment; The production module is also used to generate thermal emissions during the process of converting biomass energy into thermal energy; The processing module is used to receive solar energy and use solar energy to pre-treat the thermal emissions to generate pre-treated thermal emissions. The waste heat recovery module is also used to receive the pretreated thermal emissions and convert the pretreated thermal emissions into energy for utilization.

2. The solar biomass energy recovery system as described in claim 1, characterized in that, The waste heat recovery module includes: a steam Rankine cycle submodule and an organic Rankine cycle submodule; The steam Rankine cycle submodule is connected to the production module and the organic Rankine cycle submodule, respectively. The steam Rankine cycle submodule is used to generate steam from the primary waste heat of the pretreated thermal emissions, generate electricity from the steam, and output secondary waste heat to the organic Rankine cycle submodule. The organic Rankine cycle submodule is used to generate organic steam using the secondary waste heat, and then use the organic steam to generate electricity.

3. The solar biomass energy recovery system as described in claim 2, characterized in that, The production module includes: a gasifier, a first compressor, a combustion chamber, a high-pressure gas turbine, and a low-pressure gas turbine; The gasifier is connected to the first compressor and the combustion chamber, respectively. The combustion chamber is also connected to a high-pressure gas turbine; The high-pressure gas turbine is also connected to the processing module and the low-pressure gas turbine respectively; The first compressor is used to compress air and output the compressed air to the gasifier. The gasifier is used to receive biomass and compressed air to generate syngas, and output the syngas to the combustion chamber; The combustion chamber is used to burn the syngas to generate high-temperature, high-enthalpy products that are output to the high-pressure gas turbine. The high-pressure gas turbine is used to receive high-temperature, high-enthalpy products, provide energy to energy-consuming equipment, and generate primary exhaust gas. The processing module is used to receive solar energy to heat the primary exhaust gas; The low-pressure gas turbine is used to receive the heated primary exhaust gas, provide energy to the energy-consuming equipment, and generate secondary exhaust gas to be output to the waste heat recovery module.

4. The solar biomass energy recovery system as described in claim 3, characterized in that, The processing module includes: a receiver, a hot storage tank, a first heat exchanger, and a cold storage tank; The receiver is connected to the hot storage tank and the cold storage tank respectively; The first heat exchanger is connected to the hot storage tank, the first heat exchanger and the cold storage tank respectively; The receiver is used to receive solar energy emitted by the heliostat field and to heat the medium in the receiver; The thermal storage tank is used to store the heated medium to provide heat energy in real time; The first heat exchanger is used to output the thermal energy of the medium to the high-pressure gas turbine to heat the primary exhaust gas; The cold storage tank is used to store the cooled medium.

5. The solar biomass energy recovery system as described in claim 4, characterized in that, The steam Rankine cycle submodule includes: a first evaporator, a first turbine, and a thermoelectric generator; The first evaporator is connected to the low-pressure gas turbine, the organic Rankine cycle submodule, the first turbine, and the thermoelectric generator, respectively. The first turbine is also connected to the thermoelectric generator; The first evaporator is used to receive the primary waste heat generated by the secondary waste gas, generate water vapor, and output the secondary waste heat to the organic Rankine cycle submodule. The first turbine generates electricity using the steam. The thermoelectric generator receives the energy recovered from the water vapor generated by power generation, and condenses the working fluid and outputs it to the first evaporator through a pump to complete the cycle.

6. The solar biomass energy recovery system as described in claim 5, characterized in that, The organic Rankine cycle submodule includes: a second evaporator, a second turbine, and a condenser; The second evaporator is connected to the first evaporator, the second turbine, and the condenser, respectively; The condenser is also connected to the second turbine; The second evaporator is used to receive secondary waste heat and generate organic vapor; The second turbine generates electricity using the steam from the organic matter; The condenser is used to condense the organic vapor produced after power generation, and then pumps it to the second evaporator to complete the cycle.

7. The solar biomass energy recovery system as described in claim 1 or 6, characterized in that, The system also includes: a hydrogen production module; The hydrogen production module is connected to the waste heat recovery module; The hydrogen production module is used to receive electrical energy converted by the waste heat recovery module and water generated by the solar biomass energy recovery system, and to use the converted electrical energy and water to produce hydrogen.

8. The solar biomass energy recovery system as described in claim 7, characterized in that, The system also includes: a separation module; The separation module is connected to the hydrogen production module; The separation module is used to separate the hydrogen produced by the hydrogen production module into liquid and gaseous forms to obtain liquid hydrogen and gaseous hydrogen.

9. The solar biomass energy recovery system as described in claim 8, characterized in that, The hydrogen production module includes: a proton exchange membrane electrolyzer; The proton exchange membrane electrolyzer is connected to the waste heat recovery module; The proton exchange membrane electrolyzer is used to receive the converted electrical energy and water generated by the solar biomass energy recovery system to produce hydrogen.

10. The solar biomass energy recovery system as described in claim 9, characterized in that, The separation module includes: a second compressor, a second heat exchanger, a third heat exchanger, a fourth heat exchanger, a precooler, a throttle valve, and a separator; The second compressor is connected to the proton exchange membrane electrolyzer, the second heat exchanger, and the third heat exchanger, respectively. The precooler is connected to the second heat exchanger, the third heat exchanger and the fourth heat exchanger respectively; The fourth heat exchanger is also connected to the separator via the throttle valve; The second compressor is used to compress the hydrogen produced by the proton exchange membrane electrolyzer, divide the hydrogen into first hydrogen and second hydrogen, output the first hydrogen to the second heat exchanger for cooling by cold steam returned from the separator, and output the second hydrogen to the third heat exchanger for cooling by nitrogen vapor. The second and third heat exchangers output the cooled hydrogen gas to the liquid nitrogen bath in the precooler; The precooler outputs precooled hydrogen to the fourth heat exchanger for further cooling. The fourth heat exchanger generates high-pressure hydrogen gas, which passes through the throttling valve and enters a two-phase state before being output to the separator. The separator separates liquid hydrogen from gaseous hydrogen.

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