Coal gasification black water heat removal device with S-shaped vortex flow channel

Abstract

The utility model discloses an S-shaped vortex flow channel coal gasification black water heat removal device, which belongs to the technical field of coal chemical heat removal devices, and comprises a combined heat preservation protection box, a full-automatic hydraulic control unit and an S-shaped vortex flow channel heat removal core body, the S-shaped vortex runner heat removal core body comprises a plurality of layers of pressure bearing plates which are arranged at intervals, interval spaces between the adjacent pressure bearing plates are water passing layers, and the adjacent water passing layers are a black water layer and a secondary water layer respectively; a black water S-shaped vortex flow channel and a black water flow-equalizing and pressure-equalizing channel are arranged in a black water heat transfer area of the black water layer; and a secondary water S-shaped vortex flow channel and a secondary water flow equalizing and pressure equalizing groove are arranged in the secondary water heat transfer area of the secondary water layer. According to the utility model, a core heat removal part is redesigned, so that the problems that a conventional heat exchanger is easy to block, scale and corrode and the like due to particle impurities such as fine ash and slag in black water of the coal chemical gasifier are effectively solved, efficient heat removal is realized, the energy utilization efficiency is improved, and waste of a large amount of waste heat is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of coal chemical heat extraction devices, specifically to an S-vortex flow channel coal gasification black water heat extraction device. Background Technology

[0002] A heat exchanger is an energy-saving device that enables heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters of the process to meet the requirements of the process conditions. It is also one of the main devices for improving energy utilization efficiency.

[0003] The heat exchanger industry involves nearly 30 sectors, including HVAC, pressure vessels, wastewater treatment equipment, chemicals, and petroleum, forming interconnected industrial chains. In chemical production, heat exchangers are widely used as heat extractors, heaters, coolers, condensers, evaporators, and reboilers.

[0004] In the coal chemical industry, heat exchangers are commonly used as heat extractors to extract heat from the black water in coal chemical gasification furnaces. However, due to the presence of fine ash, slag and other particulate impurities in the black water, conventional heat exchangers are prone to clogging, scaling and corrosion, which greatly affects the heat extraction effect and wastes a lot of waste heat. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, this utility model provides an S-vortex flow channel coal gasification black water heat extraction device. This S-vortex flow channel coal gasification black water heat extraction device is specifically designed for heat extraction from black water in coal chemical gasification furnaces. This solution redesigns the core heat extraction components, effectively solving problems such as easy clogging, scaling, and corrosion of conventional heat exchangers caused by fine ash, slag, and other particulate impurities in the black water of coal chemical gasification furnaces. It achieves efficient heat extraction, improves energy utilization efficiency, and reduces a large amount of waste heat.

[0006] To solve the above-mentioned technical problems, this utility model provides an S-vortex flow channel coal gasification black water heat extraction device, which includes a combined heat preservation and protection box, a fully automatic hydraulic control unit and an S-shaped vortex flow channel heat extraction core.

[0007] The S-shaped vortex flow channel heat extraction core includes several layers of pressure plates spaced apart. The space between adjacent pressure plates is a water passage layer, and the adjacent water passage layers are a black water layer and a secondary water layer, respectively.

[0008] The black water layer, from top to bottom, includes a black water inlet, a black water inlet corner hole area, a black water inlet diversion area, a black water inlet guiding area, a black water heat transfer area, a black water outlet guiding area, a black water outlet diversion area, a black water outlet corner hole area, and a black water outlet.

[0009] The black water heat transfer zone is equipped with a black water S-shaped vortex flow channel and a black water flow equalization and pressure equalization channel connected to the black water S-shaped vortex flow channel.

[0010] The secondary water layer, from bottom to top, includes a secondary water inlet, a secondary water inlet corner hole area, a secondary water inlet diversion area, a secondary water inlet guiding area, a secondary water heat transfer area, a secondary water outlet guiding area, a secondary water outlet diversion area, a secondary water outlet corner hole area, and a secondary water outlet.

[0011] The secondary water heat transfer zone is equipped with a secondary water S-shaped vortex flow channel and a secondary water flow equalization and pressure equalization tank connected to the secondary water S-shaped vortex flow channel.

[0012] In a further improvement of this utility model, the pressure plate is provided with several rows of linear support structures of slab blocks at intervals. After the two pressure plates are arranged opposite each other, the several rows of linear support structures of slab blocks at intervals on them form an S-shaped vortex flow channel and a flow equalization and pressure equalization channel in the water-passing layer.

[0013] Through the above design, this scheme can more easily form an S-shaped vortex flow channel and a flow equalization and pressure equalization channel.

[0014] In a further improvement of this utility model, gentle keel reinforcing ribs are respectively provided in the black water inlet corner hole area, the black water outlet corner hole area, the secondary water inlet corner hole area, and the secondary water outlet corner hole area.

[0015] Through the above design, this solution can more easily prevent impurities such as fine ash and slag in the black water from depositing in the corner hole area during long-term operation, blocking the corner hole area, and affecting the smooth entry of black water into the heat extraction core; at the same time, the keel reinforcing rib also strengthens the support of heat extraction, and increases the hardness and rigidity of heat extraction.

[0016] In a further improvement of this utility model, diversion channels are respectively provided in the black water inlet diversion zone, the black water outlet diversion zone, the secondary water inlet diversion zone, and the secondary water outlet diversion zone.

[0017] Through the above design, this solution can facilitate traffic diversion.

[0018] In a further improvement of this utility model, large-span ultra-deep diversion channels are respectively provided in the black water inlet diversion area, the black water outlet diversion area, the secondary water inlet diversion area, and the secondary water outlet diversion area.

[0019] Through the above design, this scheme uses a large-span, ultra-deep guide channel, combined with a diversion channel, to form an optimized progressive bend angle balance resistance technology, thereby achieving uniform and diverted flow of black water across the heat extraction width.

[0020] In a further improvement of this utility model, a sealing groove is provided at the black water inlet, black water outlet, secondary water outlet, and secondary water inlet, a rubber sealing ring is provided in the sealing groove, and a sealing ring limiting protrusion step is provided at the opening of the sealing groove.

[0021] Through the above design, this solution makes it easier for the rubber sealing ring and the heat-collecting core to lock together, and the rubber sealing ring will not fall out of the groove, which can ensure accurate installation when all heat-collecting cores are assembled.

[0022] In a further improvement of this utility model, the fully automatic hydraulic control unit includes an electric water valve and a controller.

[0023] Through the above design, this solution can be more easily controlled.

[0024] In a further improvement of this utility model, the combined thermal insulation and protection box includes an outer protective box body, and the inner wall of the outer protective box body is provided with rubber and plastic thermal insulation cotton.

[0025] Through the above design, this solution can facilitate external insulation.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] This utility model is specifically designed for heat extraction from black water in coal chemical gasification furnaces. This solution redesigns the core heat extraction components, effectively solving the problems of fine ash, slag and other particulate impurities in the black water of coal chemical gasification furnaces causing easy clogging, scaling and corrosion of conventional heat exchangers, achieving efficient heat extraction, improving energy utilization efficiency and reducing a large amount of waste heat. Attached Figure Description

[0028] To more clearly illustrate the background technology or the technical solution of this utility model, the accompanying drawings used in conjunction with the prior art or specific embodiments are briefly introduced below. Obviously, the structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read them, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0029] Figure 1 This is a schematic diagram of the pressure plate structure of a specific embodiment of the present utility model.

[0030] Figure 2 This is a schematic diagram showing the positions of the black water S-shaped vortex channel and the secondary water S-shaped vortex channel in a specific embodiment of this utility model.

[0031] Figure 3 This is a schematic diagram of the linear support structure of the pressure plate block according to a specific embodiment of the present invention.

[0032] Figure 4 A schematic diagram of the structure of the fully automatic hydraulic control unit according to a specific embodiment of this utility model. Figure 1 .

[0033] Figure 5 A schematic diagram of the structure of the fully automatic hydraulic control unit according to a specific embodiment of this utility model. Figure 2 .

[0034] Figure 6 This is a schematic diagram of the combined thermal insulation and protection box structure according to a specific embodiment of this utility model.

[0035] The diagram shows: 1. Modular insulated protective box; 2. Fully automatic hydraulic control unit; 3. Pressure plate; 4. Black water inlet; 5. Black water inlet corner hole area; 6. Black water inlet diversion area; 7. Black water inlet guide area; 8. Block linear support structure; 9. Flow equalization and pressure equalization channel; 10. S-shaped vortex channel; 11. Black water outlet guide area; 12. Black water outlet diversion area; 13. Black water outlet corner hole area; 14. Black water outlet; 15. Rubber sealing ring; 16. Secondary water inlet; 17. Secondary water outlet; 18. Black water S-shaped vortex channel; 19. Secondary water S-shaped vortex channel. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0037] Meanwhile, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Changes or adjustments to the relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0038] Furthermore, it should be noted in the description of this specification that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0039] In the coal chemical industry, heat exchangers are commonly used as heat extractors to extract heat from the black water in coal chemical gasification furnaces. However, due to the presence of fine ash, slag and other particulate impurities in the black water, conventional heat exchangers are prone to clogging, scaling and corrosion, which greatly affects the heat extraction effect and wastes a lot of waste heat.

[0040] Therefore, the design concept of this application is to redesign the core heat extraction part to effectively solve the problems of fine ash, slag and other particulate impurities in the black water of coal chemical gasification furnace, which cause conventional heat exchangers to be prone to clogging, scaling and corrosion, so as to achieve efficient heat extraction, improve energy utilization efficiency and reduce a lot of waste heat.

[0041] like Figure 1-6 As shown, this application provides an S-shaped vortex flow channel coal gasification black water heat extraction device, including a combined heat preservation and protection box 1, a fully automatic hydraulic control unit 2, and an S-shaped vortex flow channel heat extraction core.

[0042] The S-shaped vortex flow channel heat extraction core includes several layers of pressure plates 3 spaced apart. The space between adjacent pressure plates 3 is a water passage layer, and the adjacent water passage layers are a black water layer and a secondary water layer, respectively.

[0043] The black water layer, from top to bottom, includes a black water inlet 4, a black water inlet corner hole area 5, a black water inlet diversion area 6, a black water inlet guiding area 7, a black water heat transfer area, a black water outlet guiding area 11, a black water outlet diversion area 12, a black water outlet corner hole area 13, and a black water outlet 14.

[0044] The black water heat transfer zone is provided with a black water S-shaped vortex channel 18 and a black water flow equalization and pressure equalization channel connected to the black water S-shaped vortex channel 18.

[0045] The secondary water layer, from bottom to top, includes a secondary water inlet 16, a secondary water inlet corner hole area, a secondary water inlet diversion area, a secondary water inlet guiding area, a secondary water heat transfer area, a secondary water outlet guiding area, a secondary water outlet diversion area, a secondary water outlet corner hole area, and a secondary water outlet 17.

[0046] The secondary water heat transfer zone is equipped with a secondary water S-shaped vortex channel 19 and a secondary water flow equalization and pressure equalization tank connected to the secondary water S-shaped vortex channel 19.

[0047] Black water enters the black water inlet corner area 5 of the black water layer through black water inlet 4, and secondary water enters the secondary water inlet corner area of ​​the secondary water layer through secondary water inlet. Black water and secondary water respectively pass through their respective S-shaped vortex channels 10 to form countercurrent heat exchange.

[0048] Among them, the pressure plate 3 is provided with several rows of linear support structures 8 at intervals. After the two pressure plates 3 are arranged opposite each other, the several rows of linear support structures 8 at intervals on them form an S-shaped vortex flow channel 10 and a flow equalization and pressure equalization channel 9 in the water-passing layer.

[0049] The S-shaped vortex channel 10 creates strong turbulence, generating strong shear and scouring forces on the walls of the pressure plate 3. The two pressure plates 3 are spaced 12mm apart, forming an S-shaped vortex channel 10 and a flow equalization and pressure equalization channel 9. This causes the black water and secondary water to form strong vortexes in their respective plate pairs in an S-shaped fluid manner, resulting in strong S-shaped turbulence in the fluid. This gives the heat extraction core a strong enhanced heat transfer effect, greatly improving the heat transfer efficiency.

[0050] Several rows of linear support structures 8 made of blocks are arranged at intervals on the pressure plate 3. The linear support structures 8 of the blocks of two pressure plates 3 form an S-shaped vortex swirling longitudinal ribbon flow design. Therefore, the pressure plate 3 has the functions of self-cleaning and anti-clogging. The S-shaped vortex can make the black water form a strong scouring in the pressure plate 3, preventing the fine ash, slag and other impurities in the black water from depositing in the pressure plate 3 and clogging the heat extraction core.

[0051] Each linear support structure 8 consists of a horizontal width of 60mm and a groove depth of 12mm or a horizontal width of 50mm and a groove depth of 10mm, forming a golden flow cross section. Compared with the tubular flow of conventional heat exchangers, the fluid can only form a heat exchange area on the 360-degree tube wall, and the fluid cannot form an effective heat exchange in the central area of ​​the tube, which greatly reduces the heat exchange efficiency of the tubular flow. However, each linear support structure 8 can form a flat strip flow with a wetted periphery formed by a duckbill shape. Furthermore, the fluid inside the linear support structure 8 is an S-shaped channel. Therefore, black water can form a large heat exchange area inside the duckbill-shaped linear support structure 8, which can simultaneously take into account the heat exchange efficiency of the core and the flow capacity of the black water.

[0052] All S-vortex ribbon flow block linear support structures 8 have transverse flow equalization and pressure equalization channels 9 in the width direction of the core. Black water can achieve the aggregation of all its upper ribbon flows into a bundle, and then be distributed to the lower ribbon flow channels. After black water flows through each block linear support structure 8, if a block linear support structure 8 is blocked due to black water quality, the black water can freely flow through the transverse flow equalization and pressure equalization channels 9 from both sides of the blocked block linear support structure 8 to the flow channel of the next block linear support structure 8 for heat exchange. Therefore, the heat extraction core will not cause the flow channel of the entire heat transfer zone to be blocked due to the blockage of a block linear support structure 8, thus affecting the flow and heat exchange of black water in the heat transfer zone.

[0053] Among them, gentle keel reinforcing ribs are respectively provided in the black water inlet corner hole area 5, the black water outlet corner hole area 13, the secondary water inlet corner hole area, and the secondary water outlet corner hole area.

[0054] The corner holes in the black water inlet corner hole area 5, the black water outlet corner hole area 13, the secondary water inlet corner hole area, and the secondary water outlet corner hole area are designed to prevent clogging. There are no cross contact points at the corner hole inlets. The corner hole area is equipped with gentle keel reinforcing ribs to prevent fine ash, slag, and other impurities in the black water from depositing in the corner hole area during long-term operation, thereby clogging the corner hole area and affecting the smooth entry of black water into the heat exchange core. At the same time, the keel reinforcing ribs also enhance the support of heat exchange and increase the hardness and rigidity of the heat exchange.

[0055] Diversion channels are respectively installed in the black water inlet diversion zone 6, the black water outlet diversion zone 12, the secondary water inlet diversion zone, and the secondary water outlet diversion zone.

[0056] Large-span ultra-deep diversion channels are respectively set in the black water inlet diversion zone 7, the black water outlet diversion zone 11, the secondary water inlet diversion zone, and the secondary water outlet diversion zone.

[0057] The aforementioned diversion zone employs a large-span, ultra-deep diversion channel, which, together with the diversion channel in the aforementioned diversion zone, forms an optimized progressive angle balance resistance technology to achieve uniform and diverted flow of black water across the heat extraction width.

[0058] Among them, the four black water inlets, the fourteen black water outlets, the seventeen secondary water outlets, and the sixteen secondary water inlets are each equipped with a sealing groove. A rubber sealing ring 15 (a high-temperature resistant and corrosion-resistant synthetic rubber sealing ring 15) is installed in the sealing groove, and a sealing ring limiting protrusion step is provided at the opening of the sealing groove.

[0059] High-temperature and corrosion-resistant synthetic rubber sealing rings 15 are embedded in the sealing grooves around the pressure plate 3 (4 black water inlets, 14 black water outlets, 16 secondary water inlets, and 17 secondary water outlets). With a trapezoidal design, the rubber sealing rings 15 have a large number of semi-circular pressure-bearing hidden buckles. When the rubber sealing rings 15 are under pressure, the rubber sealing rings 15 and the pressure plate 3 can achieve high pressure-bearing technology with a backrest. At the same time, the rubber sealing rings 15 are provided with several sealing ring limiting protrusions and steps around the pressure plate 3. The rubber sealing rings 15 and the pressure plate 3 are locked together, and the rubber sealing rings 15 do not fall out of the groove, which can ensure accurate installation when all pressure plates 3 are assembled.

[0060] The rubber sealing ring 15 is made of high-temperature synthetic rubber, which can withstand temperatures above 170°C. It is also thickened, with each high-temperature and corrosion-resistant synthetic rubber sealing ring 15 reaching a thickness of 12mm. It has high pressure resistance and can withstand pressure of over 16 kg.

[0061] The fully automatic hydraulic control unit 2 includes an electric water valve and a controller.

[0062] Both the black water side and the secondary water side of the heat exchange device are equipped with a fully automatic hydraulic control unit 2. The hydraulic control unit consists of an electric wear-resistant black water valve with an explosion-proof rating of EXdIICT4 or higher, and an explosion-proof control cabinet with communication interfaces: MODBUS TCP / IP and S7-1500PLC. It can realize forward and reverse operation of the black water side and the secondary water side, prevent impurities in the black water side and the secondary water side from depositing and clogging the heat exchange device, and realize pure countercurrent heat exchange with a heat exchange end difference of less than 5℃.

[0063] The combined thermal insulation and protection box 1 includes an outer protective box body, and the inner wall of the outer protective box body is provided with rubber and plastic thermal insulation cotton.

[0064] The combined heat exchange device insulation and protection box 1 has a built-in high-density rubber and plastic insulation cotton, an outer protective box body with shot blasting and powder coating or fluorocarbon baking paint, a steel frame, and an overall chassis hoisting design to ensure safe hoisting. The assembled structure allows for quick disassembly and maintenance, and has heat preservation function, achieving waterproof, sunproof, dustproof, and corrosion-resistant properties.

[0065] This S-shaped vortex flow channel coal gasification black water heat extraction device includes an S-shaped vortex flow channel heat extraction core, a high-temperature and corrosion-resistant synthetic rubber sealing ring 15, a fully automatic hydraulic control unit 2, and a combined heat extraction device insulation and protection box 1. Its core component, the S-shaped vortex flow channel heat extraction core, can effectively solve the problems of fine ash, slag and other particulate impurities in the black water of coal chemical gasification furnaces, which cause conventional heat exchangers to be prone to clogging, scaling and corrosion. It can achieve efficient heat extraction, improve energy utilization efficiency and reduce a large amount of waste heat.

[0066] This S-vortex flow channel coal gasification black water heat exchange device can realize a small-end differential multi-process design, which can achieve more precise temperature control, thereby achieving efficient heat exchange and helping to improve the energy efficiency of the entire heating system.

[0067] This S-vortex flow channel coal gasification black water heat extraction device has a detachable structure, which can be thoroughly cleaned every 6 to 12 months and can be expanded by adding plates by 20%-40%.

[0068] This S-vortex flow channel coal gasification black water heat extraction device is a heavy-duty installed structure with a front and rear clamping plate thickness of 120mm, and the upper guide beam and rear column are made of 300H-shaped steel.

[0069] The main characteristics of the high-temperature and corrosion-resistant synthetic rubber sealing ring 15 of this S-vortex flow channel coal gasification black water heat extraction device are high filling capacity, aging resistance, corrosion resistance, water vapor resistance, superheated water resistance, and high elasticity.

[0070] The rubber sealing ring 15 of this S-vortex flow channel coal gasification black water heat exchange device can be divided into sections with high-temperature sealing gaskets. The front section of the high-temperature black water entering the heat exchange device is sealed by a high-temperature sealing gasket that can withstand temperatures above 170℃, and the rear section is sealed by a rubber sealing ring 15 that can withstand temperatures below 170℃.

[0071] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those skilled in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims

1. A black water heat extraction device for coal gasification in an S-vortex flow channel, characterized in that, It includes a combined insulated protective box, a fully automatic hydraulic control unit, and an S-shaped vortex flow channel heat extraction core; The S-shaped vortex flow channel heat extraction core includes several layers of pressure plates spaced apart. The space between adjacent pressure plates is a water passage layer, and the adjacent water passage layers are a black water layer and a secondary water layer, respectively. The black water layer, from top to bottom, includes a black water inlet, a black water inlet corner hole area, a black water inlet diversion area, a black water inlet guiding area, a black water heat transfer area, a black water outlet guiding area, a black water outlet diversion area, a black water outlet corner hole area, and a black water outlet. The black water heat transfer zone is equipped with a black water S-shaped vortex flow channel and a black water flow equalization and pressure equalization channel connected to the black water S-shaped vortex flow channel. The secondary water layer, from bottom to top, includes a secondary water inlet, a secondary water inlet corner hole area, a secondary water inlet diversion area, a secondary water inlet guiding area, a secondary water heat transfer area, a secondary water outlet guiding area, a secondary water outlet diversion area, a secondary water outlet corner hole area, and a secondary water outlet. The secondary water heat transfer zone is equipped with a secondary water S-shaped vortex flow channel and a secondary water flow equalization and pressure equalization tank connected to the secondary water S-shaped vortex flow channel.

2. The S-vortex flow channel coal gasification black water heat extraction device according to claim 1, characterized in that, The pressure plate is provided with several rows of linear support structures at intervals. After the two pressure plates are set opposite each other, the several rows of linear support structures on them form an S-shaped vortex flow channel and a flow equalization and pressure equalization channel in the water passage layer.

3. The S-vortex flow channel coal gasification black water heat extraction device according to claim 1, characterized in that, Smooth keel reinforcing ribs are respectively installed in the black water inlet corner hole area, the black water outlet corner hole area, the secondary water inlet corner hole area, and the secondary water outlet corner hole area.

4. The S-vortex flow channel coal gasification black water heat extraction device according to claim 1, characterized in that, Diversion channels are respectively set up in the black water inlet diversion area, the black water outlet diversion area, the secondary water inlet diversion area, and the secondary water outlet diversion area.

5. The S-vortex flow channel coal gasification black water heat extraction device according to claim 1, characterized in that, Large-span, ultra-deep diversion channels are respectively installed in the black water inlet diversion area, the black water outlet diversion area, the secondary water inlet diversion area, and the secondary water outlet diversion area.

6. The S-vortex flow channel coal gasification black water heat extraction device according to claim 1, characterized in that, A sealing groove is provided at the black water inlet, black water outlet, secondary water outlet, and secondary water inlet. A rubber sealing ring is provided in the sealing groove, and a sealing ring limiting protrusion step is provided at the opening of the sealing groove.

7. The S-vortex flow channel coal gasification black water heat extraction device according to claim 1, characterized in that, The fully automatic hydraulic control unit includes an electric water valve and a controller.

8. The S-vortex flow channel coal gasification black water heat extraction device according to claim 1, characterized in that, The combined thermal insulation and protection box includes an outer protective box body, and the inner wall of the outer protective box body is provided with rubber and plastic thermal insulation cotton.

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