Device for storing energy by heating refractory brick masonry body

Abstract

The invention discloses a device for storing energy by heating a refractory brick masonry body, and mainly relates to the technical field of energy. Comprising a refractory brick masonry body, a plurality of heating channels are sequentially arranged in the refractory brick masonry body, an electric heating device is arranged in each heating channel, the electric heating devices are electrically connected with a power management system through a power distribution system, the power management system is electrically connected with a power source, and a cavity is formed between every two adjacent heating channels. Two gas interaction areas are arranged at one end of each heating channel, one of the two gas interaction areas is a gas inlet end ascending gas flow gas interaction area, and the other one of the two gas interaction areas is a gas outlet end descending gas flow channel gas interaction area; the method is high in regional adaptability, materials required for energy storage are easy to obtain, the energy loading capacity is large, the method has large-scale popularization practical significance, a coke oven with production halt can be utilized, and idle resources are reduced.

Description

Technical Field

[0001] This invention relates to the field of energy technology, specifically to a device for storing energy by heating a refractory brick masonry structure. Background Technology

[0002] During electricity consumption, there are peak and off-peak periods. To alleviate the peak consumption problem, one solution is to convert electrical energy into other forms of energy for storage during off-peak periods, and then convert the stored energy back into electrical energy during peak periods. Existing energy storage methods include hydroelectric energy storage systems and electrochemical energy storage, which have limitations such as geographical constraints, high costs, short storage lifespans, and difficulties in waste disposal. At the same time, they also solve the problem of idle and wasted coke oven resources. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the prior art and provide a device for storing energy by heating refractory brick masonry. It has strong regional adaptability, the materials required for energy storage are readily available, and the energy carrying capacity is large. It has practical significance for large-scale promotion. It can also utilize shut-down coke ovens, reduce idle resources, make full use of existing resources, and cascade use can solve the problem of unstable electrical energy replacing coke oven gas to further produce LNG, methanol, synthetic ammonia, and hydrogen.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] A device for storing energy by heating a refractory brick masonry structure includes a refractory brick masonry structure with a plurality of heating channels arranged sequentially within it. Each heating channel is equipped with an electric heating device, which is electrically connected to a power management system via a power distribution system. The power management system is electrically connected to a power source. A cavity is provided between two adjacent heating channels. Each heating channel has an inclined channel at one end, and there are two inclined channels. A gas interaction zone is provided at the end of the inclined channel away from the heating channel. One of the two gas interaction zones is an inlet rising airflow gas interaction zone, and the other is an outlet descending airflow gas interaction zone. Low-temperature circulating gas is introduced into the inlet rising airflow gas interaction zone by a circulating fan. The high-temperature circulating gas, after heat exchange, enters the boiler through the outlet descending airflow gas interaction zone. After heat exchange in the boiler tubes, steam is generated, and then the steam generated by the boiler is converted into electrical energy by a steam turbine generator.

[0006] Preferably, the power distribution system includes a first line and a second line electrically connected to the power management system.

[0007] Preferably, both ends of the electric heating device are provided with terminals with controllers.

[0008] Preferably, demineralized water is supplied to the boiler via a boiler feedwater pump.

[0009] Preferably, demineralized water is prepared through a boiler water supply system.

[0010] Preferably, the circulating gas is replenished through a circulating gas replenishment system.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The power source of the present invention, after passing through the power management system, controls the heating of the refractory brick masonry through the electric heating device to store energy; the low-temperature circulating gas is passed through the gas exchange zone by the circulating fan, and the gas is heated in the refractory brick masonry to generate high-temperature gas which enters the boiler, and the boiler generates steam to drive the steam turbine to generate electricity and release energy.

[0013] 2. This invention utilizes the thermal stability of refractory masonry at high temperatures, its strong regional adaptability, the readily available materials required for energy storage, and its large energy carrying capacity. It can also utilize existing coke ovens, reducing resource idleness and making full use of existing resources. It can be used for grid energy storage and peak shaving; replacing high-quality coke oven gas resources with electric heating for coke ovens; upgrading decommissioned coke ovens into energy storage devices; and has multiple application scenarios, such as power supply to islands. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the energy storage device for the refractory brick masonry of the present invention;

[0015] Figure 2 This is a schematic diagram of the gas cycle and steam power generation of the present invention;

[0016] The following are the labels in the attached diagram: 1. Refractory brick masonry; 2. Heating channel; 3. Electric heating device; 4. Power management system; 5. Power supply; 6. Cavity; 7. Inclined channel; 8. Gas interaction zone; 9. Circulating fan; 10. Boiler; 11. Steam turbine generator; 12. First circuit; 13. Second circuit; 14. Terminal block; 15. Boiler feed pump; 16. Boiler water supply system; 17. Circulating gas replenishment system. Detailed Implementation

[0017] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.

[0018] Example: As attached Figure 1-2As shown, the present invention describes a device for storing energy by heating a refractory brick masonry body, comprising a refractory brick masonry body 1, which is made of refractory bricks. The refractory brick masonry body 1 utilizes the thermal stability of the refractory brick masonry body 1 at a high temperature end within a certain temperature range, and stores / releases energy through electric heating / circulating gas energy exchange.

[0019] The refractory brick masonry 1 is provided with several heating channels 2 in sequence. The heating channels 2 can be vertically arranged fire channels. The heating channels 2 serve as placement channels for electric heating devices 3, and also retain circulating gas flow channels. The circulating gas is mainly heated and converted in this part.

[0020] Each of the heating channels 2 is equipped with an electric heating device 3, which can heat the refractory brick masonry 1 with heating rods such as silicon carbide rods or silicon molybdenum rods.

[0021] The electric heating device 3 is electrically connected to the power management system 4 through the power distribution system. The power management system 4 is electrically connected to the power source 5. The power source 5 is used to store power sources such as green electricity, off-peak electricity, normal electricity, and self-sustaining power generation of the power generation system. The power management system 4 includes transformers and other components, which are used to balance the supply of energy that needs to be stored, and mainly play the role of balancing the power supply.

[0022] Preferably, the power distribution system includes a first line 12 and a second line 13 electrically connected to the power management system 4. The first line 12 is the main power supply line at the bottom of the refractory brick masonry 1, and is used to replace coke oven gas with electricity when the coke oven is electrically heated (different functional modules of this energy storage device can be used in series when replacing coke oven gas with electricity during electric heating). The second line 13 is a second type of main power supply line at the bottom of the refractory brick masonry 1, and is used to replace coke oven gas with electricity when the coke oven is electrically heated.

[0023] Preferably, both ends of the electric heating device 3 are provided with terminals 14 with controllers, which control the output power of the heating rod after temperature feedback from the heating channel 2, so as to balance the uniform energy storage of the entire energy storage device.

[0024] A cavity 6 is provided between two adjacent heating channels 2. The cavity 6 can be filled with packing material to enhance the function of the device. The packing material can be coal coke, etc., to enhance energy storage. The cavity 6 can also be filled with economical packing materials such as sand and gravel. When electric heating is used, this part is used for dry distillation and coking when electric energy is used to replace coke oven gas.

[0025] Each heating channel 2 has an inclined channel 7 at one end. There are two inclined channels 7, spaced apart and directed to the left and right sides. The end of the inclined channel 7 away from the heating channel 2 has a gas interaction zone 8, which can also be called a heat storage chamber. One of the two gas interaction zones 8 is the inlet rising airflow gas interaction zone, and the other is the outlet descending airflow channel gas interaction zone, separated by a partition wall. It mainly introduces the low-temperature circulating gas before energy conversion and draws out the high-temperature circulating gas after energy conversion. The inclined channel 7 is used for the diversion and guidance of circulating gas. The low-temperature circulating gas from the inlet rising airflow gas interaction zone / heat storage chamber enters the heating channel / fire channel through the rising airflow channel in this area. The high-temperature circulating gas after energy conversion in the heating channel / fire channel passes through the outlet descending airflow channel gas interaction zone / heat storage chamber in this area.

[0026] The circulating fan 9 introduces low-temperature circulating gas, which is then distributed and enters each heat exchange unit. The high-temperature circulating gas after heat exchange is integrated and then enters the boiler 10. Specifically, the circulating fan 9 sends low-temperature circulating gas to the gas interaction zone of the rising airflow at the inlet end, and the high-temperature circulating gas after heat exchange enters the boiler 10 through the gas interaction zone of the descending airflow channel at the outlet end. After heat exchange in the boiler 10 through the furnace tubes, steam is generated. Then, the steam generated by the steam turbine generator 11 converts the steam generated by the boiler 10 into electrical energy.

[0027] Preferably, demineralized water is supplied to boiler 10 via boiler feed pump 15.

[0028] Preferably, demineralized water is prepared through the boiler water supply system 16.

[0029] Preferably, the circulating gas is replenished through the circulating gas replenishment system 17.

[0030] In use, the electrical energy to be stored is fed into the power management system. The power management system adjusts the power parameters according to the operating conditions, such as increasing the voltage of the transformer. The power management system heats the refractory brick masonry 1 through each electric heating device 3 (silicon carbide rod, silicon molybdenum rod, etc.), and adjusts the heating uniformity through individual, single-row, and whole-device adjustment systems. For coke oven gas replacement using coke oven electricity, no further operation is required. The circulating fan introduces low-temperature N2 gas or other circulating gases into the device. The circulating gas is heated to a high temperature and then exits the device. The high-temperature circulating gas generates steam after heat exchange in the boiler. The steam drives the steam turbine generator to generate electricity for external supply / self-use, or the steam can be supplied externally.

Claims

1. A device for storing energy by heating a refractory brick masonry structure, characterized in that: The system includes a refractory brick masonry body (1), within which several heating channels (2) are arranged sequentially. Each heating channel (2) is equipped with an electric heating device (3), which is electrically connected to a power management system (4) via a power distribution system. The power management system (4) is electrically connected to a power source (5). A cavity (6) is provided between two adjacent heating channels (2). One end of each heating channel (2) is provided with an inclined channel (7), and there are two inclined channels (7). The inclined channels (7) are located away from each other. One end of the heating channel (2) is provided with a gas interaction zone (8). One of the two gas interaction zones (8) is the gas interaction zone of the rising airflow at the inlet end, and the other is the gas interaction zone of the descending airflow at the outlet end. Low-temperature circulating gas is sent to the gas interaction zone of the rising airflow at the inlet end by the circulating fan (9). After heat exchange, the high-temperature circulating gas enters the boiler (10) through the gas interaction zone of the descending airflow at the outlet end. Steam is generated in the boiler (10) after heat exchange through the furnace tubes. The steam generated by the steam turbine generator (11) is then converted into electrical energy by the steam generated by the boiler (10).

2. The device for storing energy by heating a refractory brick masonry according to claim 1, characterized in that: The power distribution system includes a first line (12) and a second line (13) that are electrically connected to the power management system (4).

3. The device for storing energy by heating a refractory brick masonry according to claim 1, characterized in that: Both ends of the electric heating device (3) are equipped with terminals (14) with controllers.

4. The device for storing energy by heating a refractory brick masonry according to claim 1, characterized in that: Demineralized water is supplied to the boiler (10) via the boiler feed pump (15).

5. The device for storing energy by heating a refractory brick masonry according to claim 1, characterized in that: Demineralized water is prepared by the boiler water supply system (16).

6. The device for storing energy by heating a refractory brick masonry according to claim 1, characterized in that: The circulating gas is replenished by the circulating gas replenishment system (17).

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