A photoelectric coupled coal-based activated coke preparation system and method

Abstract

The present invention discloses a photoelectrically coupled coal-based activated coke preparation system and method. The photoelectrically coupled coal-based activated coke preparation system includes a heat medium circulation device, a steam circulation device, and a coking device. The heat medium circulation device is connected to the steam circulation device. The coking device includes a coking oven and a heat exchange component arranged in the coking oven. The heat exchange component has a heat exchange medium inlet and a heat exchange medium outlet. The heat medium circulation device is provided with a heat medium inlet and a heat medium outlet. The heat exchange medium inlet is connected to the heat medium outlet, and the heat exchange medium outlet is connected to the heat medium inlet. The heat medium circulation device is also provided with a steam inlet and a steam outlet. The steam circulation device is provided with a steam extraction port, which is connected to the steam extraction port, and the steam extraction port is connected to the steam extraction port, and the steam extraction port is connected to the activation steam inlet of the coking oven. Using the heat energy generated by the solar thermal power station for the activation process of preparing coal-based activated coke not only improves the overall energy utilization of the system, but also solves the problem of supplying a high-quality steam source in the activated coke preparation process.

Description

Technical Field

[0001] The present invention relates to the technical field of energy utilization, and in particular to a photoelectrically coupled coal-based activated coke preparation system and method. Background Art

[0002] Waste heat utilization plays a vital role in energy conservation, emission reduction, energy efficiency improvement, and sustainable development. During the power generation process at a solar thermal power station, collected solar energy is converted into heat, which is used to drive a steam turbine to generate electricity. However, not all of this heat is used to drive the turbine, leaving some waste heat unused. This results in inadequate energy utilization and energy waste. Furthermore, this waste heat, when directly discharged, causes thermal pollution to the surrounding environment and impacts the ecological balance. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a photoelectrically coupled coal-based activated coke preparation system, which is used to solve the problem of inefficient energy utilization in solar thermal power stations and simultaneously solves the problem of steam source supply in the activated coke preparation process.

[0005] The photoelectric coupling coal-based activated coke preparation system of the embodiment of the present invention includes: a heat medium circulation device, a steam circulation device and a coking device, the heat medium circulation device is connected to the steam circulation device, the heat medium circulation device is used to use a heat medium to heat the steam of the steam circulation device, the coking device includes a coking oven and a heat exchange component arranged in the coking oven, the heat exchange component has a heat exchange medium inlet and a heat exchange medium outlet, the heat medium circulation device is provided with a heat medium inlet and a heat medium outlet, the heat exchange medium inlet is connected to the heat medium outlet, and the heat exchange medium outlet is connected to the heat medium inlet, so that the heat medium of the heat medium circulation device passes through the heat medium outlet and the heat exchange medium outlet in sequence. The heat exchange medium inlet enters the coking oven to exchange heat with the coal in the coking oven, and the heat medium after heat exchange returns to the heat medium circulation device through the heat exchange medium outlet and the heat medium inlet in turn. The heat medium circulation device is also provided with a steam inlet and a steam outlet. The steam circulation device is provided with a steam extraction port, which is connected to the steam inlet, and the steam outlet is connected to the activation steam inlet of the coking oven, so that the steam from the steam circulation device passes through the steam extraction port and the steam inlet in turn into the heat medium circulation device for heating, and the heated steam passes through the steam outlet and the activation steam inlet of the coking oven in turn into the coking oven to participate in the activation reaction.

[0006] The photovoltaic-coupled coal-based activated coke production system of this embodiment utilizes thermal energy from a CSP power plant as a heat source for the coke oven, indirectly heating the coal within the oven. This improves overall energy utilization, avoids burning fossil fuels to heat the coal during the cokemaking process, and reduces the production cost of activated coke. Furthermore, by utilizing steam from the CSP power plant as activation steam for the coke oven, the quality and temperature of the activation steam are maintained, further reducing the production cost of activated coke and improving the overall economic efficiency of the system.

[0007] In some embodiments, the heat medium circulation device includes a heat collector, a cascade heat exchange assembly and a reheater. The heat medium outlet of the heat collector is connected to the heat medium inlet of the cascade heat exchange assembly and the heat medium inlet of the reheater. The heat medium outlet of the cascade heat exchange assembly and the heat medium outlet of the reheater are respectively connected to the heat medium inlet of the heat collector. The heat exchange medium inlet is connected to the heat medium inlet of the heat collector. The heat exchange medium outlet is connected to the heat medium inlet of the cascade heat exchange assembly and / or the heat medium inlet of the reheater.

[0008] In some embodiments, a coke oven inlet control valve is provided at the heat exchange medium inlet, and a coke oven outlet control valve is provided at the heat exchange medium outlet.

[0009] In some embodiments, the cascade heat exchange assembly includes a superheater, a steam generator and a preheater, the heat medium outlet of the collector is connected to the heat medium inlet of the superheater, the heat medium outlet of the superheater is connected to the heat medium inlet of the steam generator, the heat medium outlet of the steam generator is connected to the heat medium inlet of the preheater, the heat medium outlet of the preheater is connected to the heat medium inlet of the collector, and the steam inlet and the steam outlet are both arranged on the superheater.

[0010] In some embodiments, the heat medium circulation device further includes an expansion tank, the heat medium outlet of the preheater and the heat medium outlet of the reheater are respectively connected to the heat medium inlet of the expansion tank, and the heat medium outlet of the expansion tank is connected to the heat medium inlet of the collector.

[0011] In some embodiments, the steam circulation device includes a steam power generation component, a condenser and a condensate pump, the steam outlet of the steam power generation component is connected to the steam inlet of the condenser, the condensate outlet of the condenser is connected to the inlet of the condensate pump, the outlet of the condensate pump is connected to the condensate inlet of the preheater, the condensate outlet of the preheater is connected to the condensate inlet of the steam generator, the steam outlet of the steam generator is connected to the steam inlet of the superheater, the steam outlet of the superheater is connected to the steam inlet of the steam power generation component, and the steam extraction port is provided on the steam power generation component.

[0012] In some embodiments, the steam power generation assembly includes a high-pressure cylinder, a low-pressure cylinder and a generator connected in sequence, the steam outlet of the superheater is connected to the steam inlet of the high-pressure cylinder, the steam outlet of the high-pressure cylinder is connected to the steam inlet of the reheater, the steam outlet of the reheater is connected to the steam inlet of the low-pressure cylinder, the steam outlet of the low-pressure cylinder is connected to the steam inlet of the condenser, and the steam extraction port is provided on the high-pressure cylinder.

[0013] In some embodiments, a high-pressure cylinder exhaust control valve is provided at the steam extraction port, and a coke oven steam inlet pressure reducing regulating valve is provided at the activation steam inlet of the coke oven.

[0014] The embodiments of the present invention also provide a method for preparing photoelectrically coupled coal-based activated coke.

[0015] The photoelectric coupling method for preparing coal-based activated coke according to an embodiment of the present invention is used in the photoelectric coupling system for preparing coal-based activated coke described in any of the above embodiments. The method comprises:

[0016] The heat medium is drawn out through the heat medium outlet of the heat medium circulation device and sent into the coke oven, serving as the heat source of the coke oven to indirectly exchange heat with the coal in the coke oven;

[0017] The heat medium after heat exchange is sent back to the heat medium circulation device through the heat medium inlet of the heat medium circulation device;

[0018] The steam is drawn out through the steam extraction port of the steam circulation device and sent into the heat medium circulation device for heating;

[0019] The heated steam is fed into the coke oven through the activation steam inlet of the coke oven to participate in the activation reaction.

[0020] In some embodiments, the steam heated by the heat medium circulation device is decompressed and then fed into the coke oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of a photoelectric coupled coal-based activated coke preparation system according to an embodiment of the present invention.

[0022] Reference numerals:

[0023] Collector 11, superheater 12, steam generator 13, preheater 14, reheater 15, expansion tank 16,

[0024] High-pressure cylinder 21, low-pressure cylinder 22, generator 23, condenser 24, condensate pump 25, high-pressure cylinder exhaust control valve 26, coke oven 31, coke oven inlet control valve 32, coke oven outlet control valve 33, coke oven steam inlet pressure reducing regulating valve 34. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0026] The following describes a photoelectric coupled coal-based activated coke preparation system according to an embodiment of the present invention with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the photoelectric coupling coal-based activated coke preparation system of the embodiment of the present invention includes: a heat medium circulation device, a steam circulation device and a coking device.

[0028] The heat medium circulation unit and steam circulation unit are both power generation equipment in a solar thermal power station. The heat medium circulation unit contains a circulating heat medium (such as water or oil) and uses it to collect and transfer heat. The steam circulation unit contains circulating steam or condensed water and uses the steam to generate electricity. The heat medium circulation unit is connected to the steam circulation unit and is used to exchange heat with the steam in the steam circulation unit.

[0029] The coking device includes a coking oven 31 and a heat exchange component (heat exchange coil) arranged in the coking oven 31. The heat exchange component has a heat exchange medium inlet and a heat exchange medium outlet. The heat medium circulation device is provided with a heat medium inlet and a heat medium outlet. The heat exchange medium inlet is connected to the heat medium outlet, and the heat exchange medium outlet is connected to the heat medium inlet, so that the heat medium of the heat medium circulation device enters the coking oven 31 through the heat medium outlet and the heat exchange medium inlet in turn to exchange heat with the coal in the coking oven 31, and the heat medium after heat exchange returns to the heat medium circulation device through the heat exchange medium outlet and the heat medium inlet in turn.

[0030] The heat medium circulation device is also provided with a steam inlet and a steam outlet, and the steam circulation device is provided with a steam extraction port, which is connected to the steam inlet, and the steam outlet is connected to the activation steam inlet of the coke oven 31, so that the steam of the steam circulation device passes through the steam extraction port and the steam inlet in turn into the heat medium circulation device for heating, and the heated steam passes through the steam outlet and the activation steam inlet of the coke oven 31 in turn into the coke oven 31 to participate in the activation reaction.

[0031] It should be understood that in related art, coke oven 31 is heated by burning fossil fuels or using electricity. The activated steam used in coke oven 31 is mostly generated by steam generator 13, resulting in high system operating costs and high energy consumption. A small amount of activated steam is obtained by directly purchasing steam from a nearby source, but the quality and temperature of purchased steam rarely meet the requirements of coke oven 31. Further operations such as filtering and heating are required to improve the steam quality, increasing system operating costs.

[0032] In the photovoltaic-coupled coal-based activated coke production system of the present invention, heat medium is drawn from the heat medium outlet of the heat medium circulation device and fed into the coke oven 31 through the heat exchange medium inlet of the heat exchange component, thereby indirectly heating the coal in the coke oven 31. After heat exchange, the heat medium exits the coke oven 31 through the heat exchange medium outlet and returns to the heat medium circulation device through the heat medium inlet to undergo further photothermal heat absorption. This utilizes the thermal energy of the CSP power station as the heat source for the coke oven 31, improving the energy efficiency of the CSP power station, avoiding the consumption of fossil fuels and electricity, and reducing the production cost of activated coke.

[0033] In addition, steam is drawn out through the steam extraction port of the steam circulation device, and is heated by the heat medium circulation device and then sent into the coke oven 31 as activation steam for the coke oven 31. While ensuring the quality and temperature of the activation steam for the coke oven 31, the production cost of activated coke is further reduced, and the economy of the overall operation of the system is improved.

[0034] In some embodiments, as Figure 1 As shown, the heat medium circulation device includes a heat collector 11, a cascade heat exchange component and a reheater 15.

[0035] It should be understood that the heat collector 11, the cascade heat exchange assembly, and the reheater 15 all have heat medium inlets and outlets. The heat medium inlets of the heat medium circulation device refer to the heat medium inlets of the cascade heat exchange assembly and the reheater 15, and the heat medium outlet of the heat medium circulation device refers to the heat medium outlet of the heat collector 11. The heat medium temperature at the outlet of the heat collector 11 can reach 500°C to 600°C, which meets the operating temperature of the coke oven 31.

[0036] The heat medium outlet of the collector 11 is connected to the heat medium inlet of the cascade heat exchange component and the heat medium inlet of the reheater 15 through a pipeline. The heat medium outlet of the cascade heat exchange component and the heat medium outlet of the reheater 15 are respectively connected to the heat medium inlet of the collector 11 through a pipeline. The heat exchange medium inlet is connected to the heat medium inlet of the collector 11 through a pipeline. The heat exchange medium outlet is connected to the heat medium inlet of the cascade heat exchange component and / or the heat medium inlet of the reheater 15 through a pipeline.

[0037] In other words, the pipeline between the heat medium outlet of the collector 11 and the heat medium inlet of the cascade heat exchange component and the heat medium inlet of the reheater 15 includes a main pipeline and two branch pipelines. A heat medium branch pipeline connected to the coke oven 31 is arranged in a bypass manner on the main pipeline, so that the heat medium discharged through the heat medium outlet of the collector 11 is sent into the coke oven 31 through the heat medium branch pipeline, and is sent back to the main pipeline after heat exchange in the coke oven 31, mixed with the original heat medium in the main pipeline, and then sent into the cascade heat exchange component and the reheater 15 through the two branch pipelines respectively.

[0038] In some embodiments, as Figure 1As shown, a coke oven inlet control valve 32 is provided at the heat exchange medium inlet, and a coke oven outlet control valve 33 is provided at the heat exchange medium outlet.

[0039] That is, the coke oven inlet control valve 32 is arranged on the upstream heat medium branch of the coke oven 31, and the coke oven outlet control valve 33 is arranged on the downstream heat medium branch of the coke oven 31, so as to control the on-off of the heat medium branch and the flow rate of the heat medium.

[0040] In some embodiments, as Figure 1 As shown, the cascade heat exchange assembly includes a superheater 12 , a steam generator 13 and a preheater 14 .

[0041] The superheater 12, steam generator 13, and preheater 14 all have a heat medium inlet and a heat medium outlet. The heat medium outlet of the heat collector 11 is connected to the heat medium inlet of the superheater 12 via a pipeline. The heat medium outlet of the superheater 12 is connected to the heat medium inlet of the steam generator 13 via a pipeline. The heat medium outlet of the steam generator 13 is connected to the heat medium inlet of the preheater 14 via a pipeline. The heat medium outlet of the preheater 14 is connected to the heat medium inlet of the heat collector 11 via a pipeline.

[0042] The heat medium circulation device further includes an expansion tank 16 having a heat medium inlet and a heat medium outlet. The heat medium outlets of the preheater 14 and the reheater 15 are connected to the heat medium inlet of the expansion tank 16 via pipelines, and the heat medium outlet of the expansion tank 16 is connected to the heat medium inlet of the collector 11 via pipelines.

[0043] Those skilled in the art are well aware that the majority of the heat medium discharged through the heat medium outlet of the heat collector 11 enters the superheater 12, with a smaller portion entering the reheater 15. The temperature of the heat medium passing through the superheater 12, steam generator 13, and preheater 14, in sequence, is the same as the temperature of the heat medium passing through the reheater 15. Therefore, compared to the induced steam inlet and outlet being both located on the reheater 15, the induced steam inlet and outlet are both located on the superheater 12, ensuring that the steam drawn from the steam extraction port of the steam circulation device can be heated to the activation steam temperature required by the coke oven 31.

[0044] In some embodiments, as Figure 1 As shown, the steam cycle device includes a steam power generation component, a condenser 24 and a condensate pump 25. The steam power generation component includes a high-pressure cylinder 21, a low-pressure cylinder 22 and a generator 23 connected in sequence, and the rotating shafts of the three are connected.

[0045] It should be understood that the high-pressure cylinder 21, the low-pressure cylinder 22, the superheater 12 and the reheater 15 all have a steam inlet and a steam outlet, the condenser 24 has a steam inlet and a condensate outlet, the steam generator 13 has a condensate inlet and a steam outlet, and the preheater 14 has a condensate inlet and a condensate outlet.

[0046] The steam outlet of the high-pressure cylinder 21 is connected to the steam inlet of the reheater 15 through a pipeline, the steam outlet of the reheater 15 is connected to the steam inlet of the low-pressure cylinder 22 through a pipeline, the steam outlet of the low-pressure cylinder 22 is connected to the steam inlet of the condenser 24 through a pipeline, the condensate outlet of the condenser 24 is connected to the inlet of the condensate pump 25 through a pipeline, the outlet of the condensate pump 25 is connected to the condensate inlet of the preheater 14 through a pipeline, the condensate outlet of the preheater 14 is connected to the condensate inlet of the steam generator 13 through a pipeline, the steam outlet of the steam generator 13 is connected to the steam inlet of the superheater 12 through a pipeline, and the steam outlet of the superheater 12 is connected to the steam inlet of the high-pressure cylinder 21 through a pipeline.

[0047] Since the steam discharged from the low-pressure cylinder 22 is unsaturated, it is not conducive to direct heating in the superheater 12, and its temperature is lower than that of the steam discharged from the high-pressure cylinder 21. Therefore, the steam extraction port is provided on the high-pressure cylinder 21 so that the steam drawn from the steam circulation device can be directly passed into the superheater 12 for heating, ensuring economic benefits and low energy consumption.

[0048] Furthermore, if Figure 1 As shown, a high-pressure cylinder exhaust control valve 26 is provided at the steam extraction port to control the amount of steam drawn from the high-pressure cylinder 21. A coke oven steam inlet pressure reducing regulating valve 34 is provided at the activation steam inlet of the coke oven 31 to reduce the pressure of the steam entering the coke oven 31 and avoid any adverse effects on the coke oven 31.

[0049] The embodiments of the present invention also provide a method for preparing photoelectrically coupled coal-based activated coke.

[0050] The photoelectric coupling method for preparing coal-based activated coke according to an embodiment of the present invention is used in the photoelectric coupling system for preparing coal-based activated coke in any of the above embodiments. The method comprises:

[0051] The heat medium is drawn out through the heat medium outlet of the heat medium circulation device and sent into the coke oven 31, and serves as the heat source of the coke oven 31 to indirectly exchange heat with the coal in the coke oven 31. The heat medium after heat exchange is returned to the heat medium circulation device through the heat medium inlet of the heat medium circulation device, thereby solving the heat source problem in the activated coke preparation process.

[0052] Steam is drawn out through the steam extraction port of the steam circulation device and sent to the heat medium circulation device for heating. The heated steam is decompressed and then sent into the coke oven 31 through the activation steam inlet of the coke oven 31 to participate in the activation reaction, thereby solving the problem of the activation steam source in the activated coke preparation process.

[0053] In summary, using the heat energy generated by the CSP plant for the activation process of coal-based activated coke not only improves the overall energy utilization rate of the system, but also solves the problem of high-quality steam source supply in the activated coke preparation process.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0056] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0057] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0058] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0059] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A photoelectric coupled coal-based activated coke preparation system, characterized in that: include: A heat medium circulation device and a steam circulation device, wherein the heat medium circulation device is connected to the steam circulation device, and the heat medium circulation device is used to exchange heat with the steam of the steam circulation device using a heat medium; The heat exchanger is connected to the heat exchange medium inlet and the heat exchange medium outlet, and the heat medium circulation device is provided with a heat medium inlet and a heat medium outlet, the heat exchange medium inlet is connected to the heat medium outlet, and the heat exchange medium outlet is connected to the heat medium inlet, so that the heat medium of the heat medium circulation device enters the coking oven through the heat medium outlet and the heat exchange medium inlet in turn to exchange heat with the coal in the coking oven, and the heat medium after heat exchange returns to the heat medium circulation device through the heat exchange medium outlet and the heat medium inlet in turn, the heat medium circulation device is also provided with a steam inlet and a steam outlet, and the steam circulation device is provided with a steam extraction port, the steam extraction port is connected to the steam inlet, and the steam extraction outlet is connected to the activation steam inlet of the coking oven, so that the steam of the steam circulation device enters the heat medium circulation device through the steam extraction port and the steam inlet in turn for heating, and the heated steam enters the coking oven through the steam extraction outlet and the activation steam inlet of the coking oven in turn to participate in the activation reaction.

2. The photoelectric coupled coal-based activated coke preparation system according to claim 1, characterized in that: The heat medium circulation device includes a heat collector, a cascade heat exchange component and a reheater. The heat medium outlet of the heat collector is connected to the heat medium inlet of the cascade heat exchange component and the heat medium inlet of the reheater. The heat medium outlet of the cascade heat exchange component and the heat medium outlet of the reheater are respectively connected to the heat medium inlet of the heat collector. The heat exchange medium inlet is connected to the heat medium inlet of the heat collector. The heat exchange medium outlet is connected to the heat medium inlet of the cascade heat exchange component and / or the heat medium inlet of the reheater.

3. The photoelectric coupled coal-based activated coke preparation system according to claim 2, characterized in that: A coke oven inlet control valve is provided at the heat exchange medium inlet, and a coke oven outlet control valve is provided at the heat exchange medium outlet.

4. The photoelectric coupled coal-based activated coke preparation system according to claim 2, characterized in that: The cascade heat exchange component includes a superheater, a steam generator and a preheater. The heat medium outlet of the collector is connected to the heat medium inlet of the superheater, the heat medium outlet of the superheater is connected to the heat medium inlet of the steam generator, the heat medium outlet of the steam generator is connected to the heat medium inlet of the preheater, the heat medium outlet of the preheater is connected to the heat medium inlet of the collector, and the steam inlet and the steam outlet are both arranged on the superheater.

5. The photoelectric coupled coal-based activated coke preparation system according to claim 4, characterized in that: The heat medium circulation device further includes an expansion box, the heat medium outlet of the preheater and the heat medium outlet of the reheater are respectively connected to the heat medium inlet of the expansion box, and the heat medium outlet of the expansion box is connected to the heat medium inlet of the collector.

6. The photoelectric coupled coal-based activated coke preparation system according to claim 4, characterized in that: The steam circulation device includes a steam power generation component, a condenser and a condensate pump. The steam outlet of the steam power generation component is connected to the steam inlet of the condenser, the condensate outlet of the condenser is connected to the inlet of the condensate pump, the outlet of the condensate pump is connected to the condensate inlet of the preheater, the condensate outlet of the preheater is connected to the condensate inlet of the steam generator, the steam outlet of the steam generator is connected to the steam inlet of the superheater, the steam outlet of the superheater is connected to the steam inlet of the steam power generation component, and the steam extraction port is provided on the steam power generation component.

7. The photoelectric coupled coal-based activated coke preparation system according to claim 6, characterized in that: The steam power generation assembly includes a high-pressure cylinder, a low-pressure cylinder and a generator connected in sequence. The steam outlet of the superheater is connected to the steam inlet of the high-pressure cylinder, the steam outlet of the high-pressure cylinder is connected to the steam inlet of the reheater, the steam outlet of the reheater is connected to the steam inlet of the low-pressure cylinder, the steam outlet of the low-pressure cylinder is connected to the steam inlet of the condenser, and the steam extraction port is provided on the high-pressure cylinder.

8. The photoelectric coupled coal-based activated coke preparation system according to claim 7, characterized in that: A high-pressure cylinder exhaust control valve is provided at the steam extraction port, and a coke oven steam inlet pressure reducing regulating valve is provided at the activation steam inlet of the coke oven.

9. A method for preparing photoelectrically coupled coal-based activated coke, characterized in that: The preparation method is used in the photoelectric coupled coal-based activated coke preparation system according to any one of claims 1 to 8, and the preparation method comprises: The heat medium is drawn out through the heat medium outlet of the heat medium circulation device and sent into the coke oven, serving as the heat source of the coke oven to indirectly exchange heat with the coal in the coke oven; The heat medium after heat exchange is sent back to the heat medium circulation device through the heat medium inlet of the heat medium circulation device; The steam is drawn out through the steam extraction port of the steam circulation device and sent into the heat medium circulation device for heating; The heated steam is fed into the coke oven through the activation steam inlet of the coke oven to participate in the activation reaction.

10. The method for preparing photoelectrically coupled coal-based activated coke according to claim 9, characterized in that: The steam heated by the heat medium circulation device is decompressed and then fed into the coke oven.

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