Energy utilization system

Abstract

The invention relates to an energy utilization system. The energy utilization system comprises an air supply module, a heat storage module, a steam heat exchange module and a flow adjusting device. The air supply module is used for outputting a heat exchange medium; the heat storage module comprises a heat storage material and a heat exchange pipe penetrating through the heat storage material, and an inlet of the heat exchange pipe communicates with the air supply module. The steam heat exchange module comprises a plurality of heat exchange units, each heat exchange unit comprises a first heat exchange flow channel and a second heat exchange flow channel, and an inlet of the first heat exchange flow channel communicates with an outlet of the heat exchange pipe through an air inlet branch pipe. Each air inlet branch pipe is provided with a flow adjusting device used for adjusting the flow of the heat exchange medium flowing through the air inlet branch pipe. According to the technical scheme, the flow adjusting devices are arranged, so that the heat exchange units can conveniently output steam at different temperatures, and different heat using requirements of users in the industrial park are met.

Description

Technical Field

[0001] The present disclosure relates to the field of energy storage technology, and in particular, to an energy utilization system. Background Art

[0002] The steam central heating system is a common form of modern heating system, which is mainly used to meet the heat demand of industrial users in industrial parks. Steam can be divided into saturated steam, superheated steam, production steam, domestic steam, heating steam, etc. according to its own temperature. Steam at different temperatures can meet different heat needs. In the related technology, the output method for producing steam at different temperatures is relatively complicated. Therefore, it is urgent to provide a new technical solution to realize the convenient output of steam at different temperatures. Summary of the invention

[0003] The purpose of the present disclosure is to provide an energy utilization system so that steam of different temperatures can be conveniently produced by the energy utilization system to meet the different heat demands of industrial users in an industrial park, and to at least partially solve related technical problems.

[0004] In order to achieve the above-mentioned purpose, the present disclosure provides an energy utilization system. The energy utilization system includes: an air supply module for outputting a heat exchange medium; a heat storage module, including a heat storage material and a heat exchange tube penetrating the heat storage material, the inlet of the heat exchange tube being connected to the air supply module so that the heat exchange medium flowing through the heat exchange tube can absorb the heat stored in the heat storage material; a steam heat exchange module, including a plurality of heat exchange units, each of which includes a first heat exchange channel and a second heat exchange channel, the inlet of the first heat exchange channel being connected to the outlet of the heat exchange tube through an air inlet branch pipe so that the liquid and / or steam flowing through the second heat exchange channel can absorb the heat of the heat exchange medium flowing through the first heat exchange channel; and a flow regulating device, each of which is provided with a flow regulating device on the air inlet branch pipe, the flow regulating device being used to regulate the flow of the heat exchange medium flowing through the air inlet branch pipe so that the temperature of the steam output from the second heat exchange channel of each heat exchange unit can be different from each other.

[0005] Optionally, it further comprises a steam utilization module, comprising a plurality of utilization units, and each of the heat exchange units is connected to at least one of the utilization units via an exhaust branch pipe.

[0006] Optionally, it also includes a steam recovery module, which includes a water storage chamber, and the multiple usage units are connected to the water storage chamber through drainage branches respectively, and the water storage chamber is connected to the second heat exchange channel of at least one of the heat exchange units through a drainage pipe.

[0007] Optionally, the air supply module includes a fan, the outlet of the fan is connected to the inlet of the heat exchange tube through an air inlet main pipe, and the outlet of the first heat exchange channel is connected to the exhaust main pipe connected to the inlet of the fan through an exhaust branch pipe.

[0008] Optionally, the flow regulating device includes a flow control valve.

[0009] Optionally, the multiple heat exchange units include a first heat exchange unit and a second heat exchange unit, the first temperature of the steam output by the second heat exchange channel of the first heat exchange unit is lower than the second temperature of the steam output by the second heat exchange channel of the second heat exchange unit, and the inlet of the second heat exchange channel of the second heat exchange unit is connected to the outlet of the second heat exchange channel of the first heat exchange unit through a connecting pipe.

[0010] Optionally, the outlet of the first heat exchange channel of the second heat exchange unit is connected to the inlet of the first heat exchange channel of the first heat exchange unit through a drainage branch pipe.

[0011] Optionally, the plurality of use units include an adsorption refrigeration device, and a steam inlet of the adsorption refrigeration device is connected to an outlet of the second heat exchange channel of the first heat exchange unit.

[0012] Optionally, it further comprises a heat source and a heat storage conductive member for outputting heat to the heat storage module, wherein the heat storage conductive member is connected between the heat source and the heat storage module to transfer the heat of the heat source to the heat storage module.

[0013] Optionally, the heat source includes an electric heater capable of utilizing valley electricity, and the heat storage and heat conducting element is a heating tube of the electric heater.

[0014] Optionally, the heat storage material includes carbon material, graphite material, or the heat storage material includes carbon material, graphite material and inorganic oxide particles.

[0015] The above-mentioned technical solution provided by the present disclosure, that is, the energy utilization system, includes an air supply module, a heat storage module, a steam heat exchange module and a flow regulating device. When the system is in operation, the heat exchange medium output by the air supply module can flow into the heat exchange tube in the heat storage module and perform heat exchange with the heat storage material in the heat storage module. Furthermore, the heat exchange medium after heat exchange can be respectively passed into the first heat exchange flow channel of different heat exchange units through the air inlet branch pipe, so that the liquid and / or steam flowing through the second heat exchange flow channel in each heat exchange unit can absorb the heat of the heat exchange medium flowing through the first heat exchange flow channel and produce steam. Furthermore, each air inlet branch pipe is provided with a flow regulating device to control the flow of the heat exchange medium in the first heat exchange flow channel of each heat exchange unit, so that the temperature of the steam output from the second heat exchange flow channel of each heat exchange unit can be different from each other. The setting of the flow regulating device enables each heat exchange unit to conveniently output steam of different temperatures to meet the different heat requirements of users in the industrial park.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 It is a structural block diagram of an energy utilization system provided according to an embodiment of the present disclosure.

[0019] Description of Reference Numerals

[0020] 100. Energy utilization system; 1. Air supply module; 11. Fan; 2. Heat storage module; 21. Heat exchange tube; 3. Steam heat exchange module; 31. Heat exchange unit; 31a. First heat exchange channel; 31b. Second heat exchange channel; 311. First heat exchange unit; 312. Second heat exchange unit; 4. Flow regulating device; 41. Flow control valve; 5. Steam use module; 51. Use unit; 6. Steam recovery module; 61. Water storage chamber; 7. Heat source; 8. Heat storage and heat conducting element; 91. Air inlet main pipe; 92. Exhaust main pipe; 93. Air inlet branch pipe; 94. Exhaust branch pipe; 95. Exhaust branch pipe; 96. Drainage branch pipe; 97. Drainage pipe; 98. Connecting pipe; 99. Drainage branch pipe. DETAILED DESCRIPTION

[0021] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0022] In the present disclosure, the terms such as “first, second”, etc. are used to distinguish one element from another element and have no order or importance.

[0023] According to a specific embodiment of one aspect of the present disclosure, Figure 1 As shown, an energy utilization system 100 is provided. The energy utilization system 100 may include an air supply module 1, a heat storage module 2, a steam heat exchange module 3 and a flow regulating device 4. Among them, the air supply module 1 is used to output a heat exchange medium. The heat storage module 2 may include a heat storage material and a heat exchange tube 21 that penetrates the heat storage material. The inlet of the heat exchange tube 21 is connected to the air supply module 1 so that the heat exchange medium flowing through the heat exchange tube 21 can absorb the heat stored in the heat storage material. The steam heat exchange module 3 may include a plurality of heat exchange units 31, each heat exchange unit 31 includes a first heat exchange channel 31a and a second heat exchange channel 31b, and the inlet of the first heat exchange channel 31a is connected to the outlet of the heat exchange tube 21 through an air inlet branch pipe 93, so that the liquid and / or steam flowing through the second heat exchange channel 31b can absorb the heat of the heat exchange medium flowing through the first heat exchange channel 31a. A flow regulating device 4 is provided on each air inlet branch pipe 93. The flow regulating device 4 is used to regulate the flow of the heat exchange medium flowing through the air inlet branch pipe 93 so that the temperatures of the steam output from the second heat exchange flow channel 31 b of each heat exchange unit 31 can be different from each other.

[0024] In the above technical solution provided in this embodiment, when the system is in operation, the heat exchange medium output by the air supply module 1 can flow into the heat exchange tube 21 in the heat storage module 2 and perform heat exchange with the heat storage material in the heat storage module 2. Furthermore, the heat exchange medium after heat exchange can be respectively passed into the first heat exchange channel 31a of different heat exchange units 31 through the air inlet branch pipe 93, so that the liquid and / or steam flowing through the second heat exchange channel 31b in each heat exchange unit 31 can absorb the heat of the heat exchange medium flowing through the first heat exchange channel 31a. Furthermore, each air inlet branch pipe 93 is provided with a flow regulating device 4 to control the flow of the heat exchange medium entering the first heat exchange channel 31a of each heat exchange unit 31, so that the temperature of the steam output from the second heat exchange channel 31b of each heat exchange unit 31 can be different from each other.

[0025] In the technical solution of this embodiment, each heat exchange unit 31 can output steam of different temperatures under the control of the flow rate of the heat exchange medium by the flow regulating device 4, so as to meet the different heating demands of users in the industrial park, thereby avoiding the problem of complex output methods of steam of different temperatures in related technologies.

[0026] As an illustration, the flow regulating device 4 may include a flow control valve 41 to regulate the flow of the heat exchange medium (e.g., gas) flowing through the air inlet branch pipe 93 through the flow control valve 41. In addition, the flow regulating device 4 may also include a flow sensor disposed on the air inlet branch pipe 93 to detect the flow of the air inlet branch pipe 93 in real time through the flow sensor, or the flow control valve 41 may also be a digital flow control valve. In addition, the flow regulating device 4 may also include a variable frequency fan disposed on the air inlet branch pipe 93 to regulate the flow of the gas flowing through the air inlet branch pipe 93 through the variable frequency fan.

[0027] In some embodiments, the energy utilization system 100 may also include a steam utilization module 5. The steam utilization module 5 may include a plurality of utilization units 51. Each heat exchange unit 31 is connected to at least one utilization unit 51 through an exhaust branch pipe 95. It is understandable that the utilization unit 51 mentioned here can be understood as the user in the industrial park mentioned above. When the system is in operation, the utilization unit 51 is connected to the outlet of the second heat exchange channel 31b of the heat exchange unit 31 through the exhaust branch pipe 95, so that the second heat exchange channel 31b can transport steam to the corresponding utilization unit 51 to meet its heat demand. It is understandable that the heat exchange unit 31 here can correspond to the utilization unit 51 one by one, or the same heat exchange unit 31 can correspond to multiple utilization units 51, that is, the steam output by the same heat exchange unit 31 can be divided and shared.

[0028] In some embodiments, the energy utilization system 100 may further include a steam recovery module 6. The steam recovery module 6 may include a water storage chamber 61. A plurality of use units 51 are connected to the water storage chamber 61 through drainage branches 96, respectively. When the system is in operation, the steam is used by the use unit 51 and then collected uniformly in the water storage chamber 61 through the drainage branches 96. Further, the water storage chamber 61 is connected to at least one heat exchange unit 31 through a drainage pipe 97. The water collected in the water storage chamber 61 has a certain temperature. The water with a certain temperature in the water storage chamber 61 is used as a heat exchange medium and inputted into the second heat exchange channel 31b of the heat exchange unit 31 through the drainage pipe 97. Compared with directly introducing cold water as a heat exchange medium into the second heat exchange channel 31b, the heat consumption in the heat exchange process between the heat exchange medium in the second heat exchange channel 31b and the heat exchange medium in the first heat exchange channel 31a can be reduced, thereby improving the utilization rate of heat and reducing the waste of heat.

[0029] In some embodiments, the air supply module 1 mentioned above may include a fan 11. The outlet of the fan 11 is connected to the inlet of the heat exchange tube 21 through the air inlet main pipe 91. The fan 11 can continuously pass cold air into the heat exchange tube 21, and the cold air can absorb the heat of the heat storage material in the heat storage module 2, and pass hot air into the first heat exchange channel 31a, and the hot air can exchange heat with the liquid and / or steam in the second heat exchange channel 31b. Further, the outlet of the first heat exchange channel 31a is connected to the exhaust main pipe 92 connected to the inlet of the fan 11 through the exhaust branch pipe 94. The wind discharged from the outlet of the second heat exchange channel 31b has a certain temperature. The wind with a certain temperature discharged from the outlet of the second heat exchange channel 31b is used as a heat exchange medium and input into the exhaust main pipe 92 through the exhaust branch pipe 94. Compared with directly inputting cold air as the heat exchange medium into the exhaust main pipe 92, it can reduce the consumption of heat stored in the heat storage module 2, improve the utilization rate of heat, and reduce heat waste.

[0030] As an illustration, the multiple heat exchange units 31 in the steam utilization module 5 provided by the present disclosure may include a first heat exchange unit 311 and a second heat exchange unit 312. The first temperature of the steam output by the second heat exchange channel 31b of the first heat exchange unit 311 is lower than the second temperature of the steam output by the second heat exchange channel 31b of the second heat exchange unit 312. In order to enable those skilled in the art to better understand the technical solution of the present application, the principle that the first heat exchange unit 311 and the second heat exchange unit 312 can output steam at different temperatures will be described in detail here:

[0031] The air inlet branch pipe 93 connecting the outlet of the heat exchange pipe 21 and the inlet of the first heat exchange channel 31a of the first heat exchange unit 311 is recorded as the first air inlet branch pipe, and a first flow control valve is arranged on the first air inlet branch pipe; correspondingly, the air inlet branch pipe 93 connecting the outlet of the heat exchange pipe 21 and the inlet of the first heat exchange channel 31a of the second heat exchange unit 312 is recorded as the second air inlet branch pipe, and a second flow control valve is arranged on the second air inlet branch pipe. When in use, the opening of the first flow control valve is controlled to be smaller than that of the second flow control valve, thereby making the hot air flow rate entering the first heat exchange channel 31a of the first heat exchange unit 311 less than the hot air flow rate entering the first heat exchange channel 31a of the second heat exchange unit 312, and finally making the first temperature of the steam outputted by the second heat exchange channel 31b of the first heat exchange unit 311 less than the second temperature of the steam outputted by the second heat exchange channel 31b of the second heat exchange unit 312.

[0032] In some application scenarios, the inlet of the second heat exchange channel 31b of the second heat exchange unit 312 is connected to the outlet of the second heat exchange channel 31b of the first heat exchange unit 311 through a connecting pipe 98. It can be understood that this connection method is a circulation and efficient utilization of the heat exchange medium in the second heat exchange channel 31b. Specifically, the heat exchange medium (steam and / or liquid) with a lower temperature in the second heat exchange channel 31b of the first heat exchange unit 311 can be input into the second heat exchange channel 31b of the second heat exchange unit 312, so that the heat exchange medium (steam and / or liquid) can consume less heat of the heat exchange medium (hot air) in the first heat exchange channel 31a of the second heat exchange unit 312, so as to output steam at the second temperature.

[0033] In other application scenarios, in addition to using the flow regulating device 4 to control the flow of the heat exchange medium so that the first temperature of the steam output from the second heat exchange channel 31b of the first heat exchange unit 311 is lower than the second temperature of the steam output from the second heat exchange channel 31b of the second heat exchange unit 312, the outlet of the first heat exchange channel 31a of the second heat exchange unit 312 can also be connected to the inlet of the first heat exchange channel 31a of the first heat exchange unit 311 through the drainage branch pipe 99. It can be understood that this connection method is a cycle of efficient utilization of the heat exchange cutoff in the first heat exchange channel 31a. Specifically, the heat exchange medium (cold air) with a lower temperature in the first heat exchange channel 31a of the second heat exchange unit 312 can be input into the first heat exchange channel 31a of the first heat exchange unit 311 to reduce the initial temperature of the heat exchange medium (hot air) introduced into the first heat exchange channel 31a, thereby outputting steam of the first temperature.

[0034] The steam output by the first heat exchange unit 311 and the second heat exchange unit 312 mentioned above can be recorded as low-temperature steam and high-temperature steam, respectively. High-temperature steam can be mainly used in industrial production, such as maintaining the temperature of chemical reactors, wood processing, and steam supply for metallurgical production. For example, the use unit connected to the outlet of the second heat exchange channel 31b of the second heat exchange unit 312 can be, for example, equipment such as a reactor. When the steam is used, the low-temperature steam can be mainly used in scenes with lower temperatures such as food processing and steam washing. For example, the use unit connected to the outlet of the second heat exchange channel 31b of the first heat exchange unit 311 can be a steam washing device.

[0035] In addition, low-temperature steam can also be used for refrigeration. For example, in some embodiments, the plurality of use units 51 include an adsorption refrigeration device. The steam inlet of the adsorption refrigeration device is connected to the outlet of the second heat exchange channel 31b of the first heat exchange unit 311. The low-temperature steam used for adsorption refrigeration mainly provides an evaporation heat source for it, and refrigeration is used for refrigeration of production plants, cold storage, central air conditioning refrigeration and other places.

[0036] In some embodiments, the energy utilization system 100 may also include a heat source 7 and a heat storage conductor 8 for outputting heat to the heat storage module 2. The heat storage conductor 8 is connected between the heat source 7 and the heat storage module 2 to transfer the heat of the heat source 7 to the heat storage module 2. As an illustration, the heat source 7 may include an electric heater that can utilize valley electricity, and the heat storage conductor 8 is a heating tube of the electric heater. The electricity used during the low peak period of electricity consumption is called valley electricity. In order to utilize valley electricity, the electric energy of valley electricity can be converted into thermal energy and stored by an electric heater. The heating tube of the electric heater converts the electrical energy into thermal energy. The heated heating tube is at least partially located in the heat storage module 2, so it can directly exchange heat with the heat storage material of the heat storage module 2. The heat storage module 2 stores the heat converted from valley electricity through the heat storage material, and the valley electricity is continuously converted into thermal energy by the heating tube until the heat storage device stores enough heat. The method of using valley electricity for heating has a higher level of environmental protection than natural gas and coal-fired boilers.

[0037] Optionally, the heat source 7 may also include, for example, a boiler and a steam turbine unit, etc. For example, the high temperature radiation heat of the furnace of the boiler in the power plant, the flue gas waste heat of the boiler exhaust pipe, and the high temperature steam before the inlet of the steam turbine unit and other energy forms can be used as heat sources, which are uniformly converted into heat energy and stored in the heat storage module 2. There is no limitation here, and those skilled in the art can use any suitable heat source 7 according to actual application requirements. Taking the flue gas waste heat of the chimney as an example, the heat storage heat conducting member 8 may include a heat storage material running through the heat storage module 2 and a heat conducting pipe of the boiler exhaust pipe, and the heat conducting pipe is used for the heat conducting medium (such as gas) to circulate between the exhaust pipe and the heat storage module 2, so as to transfer part of the heat of the flue gas in the exhaust pipe to the heat storage module 2 for storage. It can be understood that through this example, those skilled in the art can think of using the high temperature radiation heat of the furnace and the heat of the high temperature steam of the steam turbine unit to store in the heat storage module 2.

[0038] In some embodiments, in order to increase the heat storage density and thermal conductivity of the heat storage material, the heat storage material may include a carbon material, a graphite material, or the heat storage material includes a carbon material, a graphite material and inorganic oxide particles. For example, a heat storage material with a carbon component of 8-30%, a graphite component of 70-92%, and an inorganic oxide particle of 0-15% may be used, wherein the inorganic oxide particle size is 50-200 μm and contains at least one of silicon oxide, boron oxide, zirconium oxide, titanium oxide, and silicon carbide. The heat storage temperature of the heat storage material can reach up to 900°C, the thermal conductivity can reach up to 100W / mk, and the heat storage density is 900kJ / kg.

[0039] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0041] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An energy utilization system, characterized in that: include: Air supply module, used for outputting heat exchange medium; A heat storage module, comprising a heat storage material and a heat exchange tube penetrating the heat storage material, wherein the inlet of the heat exchange tube is connected to the air supply module so that the heat exchange medium flowing through the heat exchange tube can absorb the heat stored in the heat storage material; A steam heat exchange module, comprising a plurality of heat exchange units, each of which comprises a first heat exchange channel and a second heat exchange channel, wherein the inlet of the first heat exchange channel is connected to the outlet of the heat exchange tube through an air inlet branch pipe, so that the liquid and / or steam flowing through the second heat exchange channel can absorb the heat of the heat exchange medium flowing through the first heat exchange channel; and A flow regulating device is provided on each of the air inlet branch pipes, and the flow regulating device is used to regulate the flow of the heat exchange medium flowing through the air inlet branch pipe so that the temperatures of the steam output from the second heat exchange flow channel of each heat exchange unit can be different.

2. The energy utilization system according to claim 1, characterized in that: It also includes a steam utilization module, which includes a plurality of utilization units, and each of the heat exchange units is connected to at least one of the utilization units through an exhaust branch pipe.

3. The energy utilization system according to claim 2, characterized in that: It also includes a steam recovery module, which includes a water storage chamber. Multiple usage units are connected to the water storage chamber through drainage branches respectively, and the water storage chamber is connected to the inlet of the second heat exchange channel of at least one heat exchange unit through a drainage pipe.

4. The energy utilization system according to claim 1, characterized in that: The air supply module includes a fan, the outlet of the fan is connected to the inlet of the heat exchange tube through an air inlet main pipe, and the outlet of the first heat exchange channel is connected to the exhaust main pipe connected to the inlet of the fan through an exhaust branch pipe.

5. The energy utilization system according to claim 1, characterized in that: The flow regulating device comprises a flow control valve.

6. The energy utilization system according to claim 1, characterized in that: The multiple heat exchange units include a first heat exchange unit and a second heat exchange unit. The first temperature of the steam output by the second heat exchange channel of the first heat exchange unit is lower than the second temperature of the steam output by the second heat exchange channel of the second heat exchange unit. The inlet of the second heat exchange channel of the second heat exchange unit is connected to the outlet of the second heat exchange channel of the first heat exchange unit through a connecting pipe.

7. The energy utilization system according to claim 6, characterized in that: The outlet of the first heat exchange channel of the second heat exchange unit is connected to the inlet of the first heat exchange channel of the first heat exchange unit through a drainage branch pipe.

8. The energy utilization system according to claim 6, characterized in that: The plurality of use units include an adsorption refrigeration device, and a steam inlet of the adsorption refrigeration device is connected to an outlet of the second heat exchange channel of the first heat exchange unit.

9. The energy utilization system according to claim 1, characterized in that: It also includes a heat source and a heat storage conductive member for outputting heat to the heat storage module. The heat storage conductive member is connected between the heat source and the heat storage module to transfer the heat of the heat source to the heat storage module.

10. The energy utilization system according to claim 9, characterized in that: The heat source comprises an electric heater capable of utilizing valley electricity, and the heat storage and heat conducting member is a heating tube of the electric heater.

11. The energy utilization system according to claim 1, characterized in that: The heat storage material includes a carbon material, a graphite material, or the heat storage material includes a carbon material, a graphite material and inorganic oxide particles.

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