A blast dehumidification device for a blast furnace

Abstract

This invention discloses a blast furnace dehumidification device, relating to the field of blast furnace dehumidification technology. The blast furnace dehumidification device includes a rotor, a heat-conducting pipe, an adsorption container, a control system, and a regeneration fan. The rotor has a stator and a rotor, and is disposed inside a ventilation duct. The adsorption container is mounted on the surface of the stator and has holes that allow air to pass through. The heat-conducting pipe is located inside the adsorption container. A feeding device is disposed above the ventilation duct, containing adsorbent particles. A recovery device is disposed below the ventilation duct. The control system is connected to the rotor and the regeneration fan and is configured to: when the system enters winter adsorption mode, control the heat-conducting pipe to introduce a hot medium and start the regeneration device; when the system enters summer condensation mode, control the heat-conducting pipe to introduce a cold medium. This configuration allows for seasonal switching, utilizing a highly efficient condensation method in summer and a stable adsorption method in winter, achieving optimal energy efficiency throughout the year.

Description

Technical Field

[0001] This invention belongs to the field of blast furnace dehumidification technology, and specifically relates to a blast furnace dehumidification device. Background Technology

[0002] Blast furnace dehumidification is an important energy-saving process in steel enterprises. Blowing dry air into the blast furnace can effectively reduce the coke ratio in ironmaking, increase output, and stabilize furnace conditions. Currently, the two main dehumidification technologies used in industry are cryogenic dehumidification and adsorption dehumidification.

[0003] The core principle of refrigeration dehumidification is to cool the blower air to below its dew point temperature using refrigeration equipment, causing water vapor to condense and precipitate. This method is relatively energy efficient and economical during hot and humid summers. However, its dehumidification capacity is heavily dependent on ambient temperature. In the cooler spring, autumn, and winter, the air dew point temperature is already very low. To continue dehumidifying through condensation, the air needs to be cooled to an even lower temperature. This not only leads to a sharp increase in refrigeration energy consumption and reduced economic efficiency but may also cause frost formation on the evaporator surface, resulting in unstable operation. Therefore, refrigeration is a typical seasonal dehumidification technology and cannot achieve efficient year-round application.

[0004] Adsorption dehumidification overcomes the seasonal limitations of freezing methods. Utilizing the physical adsorption properties of adsorbent materials (such as silica gel and molecular sieves), it can deeply dry air at any ambient temperature, achieving stable operation year-round. However, this method also has inherent drawbacks: First, its regeneration energy consumption is high, requiring a continuous large amount of heat energy to desorb the adsorbed moisture; second, the adsorbent materials experience performance degradation and caking after long-term use, necessitating a complete system shutdown for replacement and requiring manual entry into the equipment for tedious cleaning and refilling, resulting in high maintenance costs and long processing times, severely impacting continuous blast furnace production.

[0005] In recent years, some attempts have emerged in the industry to combine the two technologies, such as simple series or parallel connections. However, these combinations are often just a stacking of equipment, resulting in large systems, high initial investment, and failure to fundamentally solve the core pain point of difficult adsorption material replacement. Furthermore, traditional rotary adsorption methods involve uniformly heating the entire regeneration zone during regeneration, leading to energy waste.

[0006] Therefore, a dehumidification device for blast furnace air is needed. Summary of the Invention

[0007] The purpose of this invention is to provide a blast furnace dehumidification device that can switch between seasons, utilizing a highly efficient condensation method in summer and a stable adsorption method in winter, thus achieving optimal energy efficiency throughout the year. The specific technical solution is as follows:

[0008] On one hand, a blast furnace dehumidification device is provided, comprising a rotor, a heat-conducting pipe, an adsorption container, a control system, and a regeneration fan; the rotor has a stator and a rotor, and the rotor has multiple transmission channels connecting the stator and rotor inside the rotor. Both the stator and rotor have inlet and outlet ports for the transmission channels, and the heat-conducting pipe is connected to the inlet and outlet ports of the rotor; the rotor is disposed inside a ventilation duct, the adsorption container is mounted on the surface of the stator, and the adsorption container has holes allowing air to pass through; the heat-conducting pipe is located inside the adsorption container; a feeding device is disposed above the ventilation duct, containing adsorbent particles; a recovery device is disposed below the ventilation duct for disassembling and recovering the adsorbent particles in the adsorption container; the control system is connected to the rotor and the regeneration fan and is configured to: when the system enters winter adsorption mode, control the heat-conducting pipe to introduce a hot medium and start the regeneration device; when the system enters summer condensation mode, control the heat-conducting pipe to introduce a cold medium.

[0009] Preferably, the shape formed by the temperature-conducting tubes inside the adsorption container is the same as the internal shape of the adsorption container.

[0010] Preferably, a temperature-conducting plate is provided on the temperature-conducting tube inside the adsorption container.

[0011] Preferably, the adsorption container includes a hinged plate and a main body. One end of the hinged plate is mounted on the main body via a rotating shaft, and the other end of the hinged plate is fixed to the main body via a bayonet.

[0012] Preferably, the feeding device includes a feeding trough, a feeding platform, a feeding port, and a transfer device located on the upper part of the ventilation pipe; the feeding platform is disposed on the outer wall of the ventilation pipe, the transfer device is fixedly installed on the feeding platform, and the adsorbed particles are stored inside the transfer device; the feeding port is provided on the opening and closing plate, and the feeding port and the transfer device can be connected by a pipe.

[0013] Preferably, the recycling device includes a recycling trough located at the bottom of a ventilation duct and a storage compartment, wherein the storage compartment is fixed below the recycling trough.

[0014] Preferably, a cleaning station is provided in the storage compartment, and the cleaning station is equipped with a mechanical vibration device, a high-pressure fluid jetting device, or a mechanical crushing device to assist in material discharge.

[0015] Preferably, the adsorption container has a first windward surface and a second windward surface, and the holes on the first windward surface and the second windward surface are staggered.

[0016] Preferably, the inner wall of the adsorption container is provided with a hydrophilic coating.

[0017] On the other hand, a dehumidification method for the aforementioned blower dehumidification device is provided, comprising the following seasonal operating procedures:

[0018] Winter mode activation process:

[0019] a. Drive the rotating wheel to rotate, so that the adsorption container passes the feeding station below the feeding device;

[0020] b. Control the opening and closing plate to open, fill the adsorption container with adsorption particles through the feeding device, and close the opening and closing plate after completion;

[0021] c. Control the transmission channel in the rotor to introduce a heat medium into the U-shaped tube, and the system operates in adsorption mode;

[0022] Summer Mode Activation Process:

[0023] d. Drive the rotating wheel to rotate, so that the adsorption container passes the recycling station above the recycling tank;

[0024] e. Control the opening and closing plate to open, discharge the adsorbed particles in the adsorption container through the recycling slot, and close the opening and closing plate after completion;

[0025] f. Control the transmission channel in the rotor to supply cold medium to the U-shaped tube, and the system operates in condensation mode.

[0026] Compared with existing technologies, the present invention has the following advantages:

[0027] This invention provides a blower dehumidification device for blast furnaces, including a rotor, a heat-conducting pipe, an adsorption container, a control system, and a regeneration fan. In summer, a cooling medium is introduced into the heat-conducting pipe, while in winter, adsorption particles are filled into the adsorption container, and a heating medium is introduced into the heat-conducting pipe to achieve seasonal switching. In summer, a highly efficient condensation method is used, and in winter, a stable adsorption method is used, achieving optimal energy efficiency throughout the year.

[0028] Furthermore, compared to traditional regeneration methods, where the regeneration device blows hot air onto the adsorbent material (i.e., heating and humidification are simultaneous), a large amount of heat is directly carried away by the hot air and discharged into the atmosphere, resulting in low thermal efficiency. In contrast, this invention first heats the adsorbent material through a temperature-conducting pipe and then blows out the water vapor using a regeneration fan. Heating and humidification are performed in steps. The temperature of the adsorbent material heated by the temperature-conducting pipe rises rapidly, causing a large number of water molecules to desorb. The water vapor accumulates in the pores of the adsorbent material, and the regeneration fan efficiently carries away and discharges the water vapor from the pores. This method offers advantages such as concentrated heat for heating the adsorbent itself, minimizing heat loss, and more effectively breaking down the bonds between water molecules and deep pores during the heating stage. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0030] Figure 1 This is a schematic diagram of the overall structure of the blower dehumidification device in one embodiment of the present invention.

[0031] Figure 2 This is a structural diagram of the internal structure of the ventilation pipe of the blower dehumidification device in one embodiment of the present invention.

[0032] Figure 3 This is an internal structural diagram of the adsorption container in one embodiment of the present invention.

[0033] Figure 4 yes Figure 3 Side view.

[0034] Figure 5 This is a structural diagram of the adsorption container in one embodiment of the present invention.

[0035] Figure 6 yes Figure 5 Side view.

[0036] Figure 7 This is a structural diagram of the rotary wheel in one embodiment of the present invention.

[0037] Figure 8 This is a cross-sectional view of the rotor in one embodiment of the present invention.

[0038] Explanation of key figure labels:

[0039] 1. Ventilation duct; 2. Adsorption container; 201. Main body; 202. Opening and closing plate; 203. First windward surface; 204. Second windward surface; 3. Rotary wheel; 301. Rotor; 302. Stator; 4. Regeneration fan; 5. Temperature guide pipe; 501. Inlet; 502. Outlet; 6. Temperature guide plate; 7. Hole; 8. Feeding device; 801. Feeding trough; 802. Feeding platform; 803. Transfer equipment; 804. Feeding port; 9. Recovery device; 901. Recovery tank; 902. Storage bin; 10. Transmission channel. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Next, the working principle of this embodiment will be described in detail to enable those skilled in the art to better understand the present invention:

[0042] refer to Figures 1-4 The dehumidification device includes a rotor 3, a temperature-conducting pipe 5, an adsorption container 2, a control system, and a regeneration fan 4. The rotor 3 has a stator 302 and a rotor 301. Multiple transmission channels 10 connecting the stator 302 and the rotor 301 are provided inside the rotor 3. Both the stator 302 and the rotor 301 are provided with an inlet 501 and an outlet 502 of the transmission channels 10. The temperature-conducting pipe 5 is connected to the inlet 501 and the outlet 502 of the rotor 301. The rotor 3 is located inside the ventilation pipe 1, and the adsorption container 2 is mounted on the surface of the stator 302. The adsorption container 2 is provided with holes 7 that allow air to pass through, and the temperature-conducting pipe 5 is located inside the adsorption container 2; a feeding device 8 is provided above the ventilation pipe 1, and adsorption particles are provided inside the feeding device 8; a recovery device 9 is provided below the ventilation pipe 1 for disassembling and recovering the adsorption particles inside the adsorption container 2; the control system is connected to the rotor 3 and the regeneration fan 4, and is configured to: when the system enters the winter adsorption mode, control the temperature-conducting pipe 5 to introduce a hot medium and start the regeneration device; when the system enters the summer condensation mode, control the temperature-conducting pipe 5 to introduce a cold medium.

[0043] Users can determine whether to use summer or winter mode by detecting the air temperature. The power unit is connected to the rotor 301. The rotor 3 has multiple transmission channels 10 connecting the stator 302 and the rotor 301, forming a multi-channel rotating structure. The rotor 301 has multiple sets of input ports 501 and output ports 502. The two ends of the temperature-conducting pipe 5 are connected to the same set of input ports 501 and output ports 502 on the rotor 301, respectively. The temperature-conducting pipe 5 is made of a high thermal conductivity metal, such as copper or aluminum alloy. The stator 302 has inlet and outlet ports corresponding to each set of input ports 501 and output ports 502 on the rotor 301. The temperature-conducting medium flows through the transmission channels 10 within the temperature-conducting pipe 5. The temperature-conducting pipe 5 is located inside the adsorption container 2, which has holes 7 that allow air to pass through. The temperature-conducting medium creates a low-temperature or high-temperature heat exchange space inside the adsorption container 2, providing a heat exchange environment for the passing air. In summer, [reference...] Figure 4 and Figure 6Air enters from the first windward side 203 of the adsorption container 2 and comes into contact with the heat-conducting pipe 5 and the heat exchange space, thereby lowering the dew point temperature of the air. Because the holes 7 on the adsorption container 2 are staggered, the air exiting from the second windward side 204 of the adsorption container 2 will impact this surface. At this time, moisture in the air adheres to or precipitates on the second windward side 204 of the adsorption container 2, and finally flows out through the staggered holes 7 into the blast furnace or into the next air treatment system. This design forces more turbulence and flow around the air as it passes through the adsorption container 2, thereby prolonging the contact time between the air and the adsorbent particles or the inner wall of the adsorption container 2, improving mass and heat transfer efficiency, and thus enhancing the dehumidification effect.

[0044] The second windward surface 204 is equivalent to a traditional baffle-type air-water separator. The precipitated water flows or drips into the drainage system in the ventilation pipe 1 for discharge. Since the water is precipitated in the adsorption container 2, holes 7 can be provided at the bottom of the adsorption container 2 to collect and discharge the water, or the container can be slowly rotated to empty the water in the adsorption container 2.

[0045] In winter, first control the adsorption containers 2 on the rotating wheel 3 to move them one by one to below the feeding device 8. Then, fill the adsorption containers 2 with adsorption particles through the feeding device 8. The adsorption particles can be made of silica gel, and their diameter is larger than the diameter of the pores 7. For details, refer to... Figure 5The adsorption container 2 includes a hinged plate 202 and a main body 201. One end of the hinged plate 202 is mounted on the main body 201 via a rotating shaft, and the other end of the hinged plate 202 is fixed to the main body 201 via a snap-fit. During filling, the snap-fit ​​on the hinged plate 202 can be opened to insert a pipe into the gap of the hinged plate 202, allowing the adsorbent material to enter the interior of the adsorption container 2 through the pipe. After filling is complete, the adsorption container 2 is closed again by the hinged plate 202, thus filling all the adsorption containers 2 on the rotor 3 with adsorbent material. During operation, a high-temperature medium is introduced individually into each set of input ports 501 and output ports 502 on the rotor 301. That is, the adsorbent material in the adsorption container 2 is heated only after the adsorption container 2 moves to the position of the regeneration fan 4, and the moisture in the adsorbent material is blown out by the fan. Since the adsorbent material in this embodiment only operates for one winter, when summer arrives, the control wheel 3 rotates the adsorption container 2 above the recovery device 9, opens the opening plate 202 on the adsorption container 2, and pours the adsorbent material into the recovery device 9, completing the transition from winter to summer operating mode. The recovered adsorbent material is then sent for cleaning and maintenance to remove trace amounts of oil mist, dust, and other impurities from the air that could clog the pores of the adsorbent. Furthermore, the number of thermal stress cycles is relatively low, allowing the adsorbent material to maintain its original granular state and good flowability after one season of use. In this embodiment, the recovery device 9 includes a recovery trough 901 located at the lower part of the ventilation pipe 1 and a storage chamber 902. The storage chamber 902 is fixed below the recovery trough 901. The adsorbent material can be emptied into the storage chamber 902 by simple gravity pouring. In case of adhesion, mechanical vibration devices, high-pressure fluid jet devices, or mechanical crushing devices can be used to assist in removing the adsorbent material.

[0046] For details, please refer to Figure 3 In this embodiment, the feeding device 8 includes a feeding trough 801, a feeding platform 802, a feeding port 804, and a transfer device 803 located on the upper part of the ventilation pipe 1. The feeding platform 802 is disposed on the outer wall of the ventilation pipe 1, and the transfer device 803 is fixedly installed on the feeding platform 802. The transfer device 803 stores the adsorbent particles. The opening and closing plate 202 is provided with the feeding port 804, and the feeding port 804 and the transfer device 803 can be connected by a pipe. Considering that the adsorbent material on the ventilation pipe 1 is difficult to transport, a transfer pump can be installed in the transfer device 803 to transport the adsorbent material that is far from the ventilation pipe 1 to the adsorption container 2.

[0047] The feeding port 804 can be sealed with a cover plate, and the filling adsorbent material can be added more conveniently by connecting the pipe to the feeding port 804.

[0048] Among them, reference Figure 7 In this embodiment, the shape of the adsorption container 2 can be set according to the shape of the ventilation pipe 1. In this embodiment, the ventilation pipe 1 is circular, and the adsorption container 2 is fan-shaped, which can fully cover the windward side of the ventilation pipe 1. Therefore, the heat-conducting pipe 5 can be enclosed to form a fan shape, which can make the temperature of the heat exchange space in the adsorption container 2 more uniform and improve the heat exchange efficiency.

[0049] It should be noted that the thermally conductive medium can be any of water, water vapor, or other commonly used thermally conductive media. In this embodiment, water is used as the medium.

[0050] In addition, refer to Figure 7 In one implementation of this embodiment, a temperature-conducting plate 6 is provided on the temperature-conducting pipe 5 inside the adsorption container 2. The temperature-conducting plate 6 increases the direct contact surface with air, improving heat exchange efficiency and providing a more stable thermal environment for the heat exchange space.

[0051] In the above embodiments, the inner wall of the adsorption container 2 is provided with a hydrophilic coating to promote the formation and flow away of water film in summer condensation mode.

[0052] On the other hand, the present invention provides a seasonal operation process applicable to the above embodiments:

[0053] Winter mode activation process:

[0054] a. Drive the rotating wheel 3 to rotate, so that the adsorption container 2 passes the feeding station below the feeding device 8;

[0055] b. Control the opening and closing plate 202 to open, and fill the adsorption container 2 with adsorption particles through the feeding device 8. After completion, close the opening and closing plate 202.

[0056] c. Control the transmission channel 10 in the rotating wheel 3 to introduce a heat medium into the heat-conducting pipe 5, and the system operates in adsorption mode;

[0057] Summer Mode Activation Process:

[0058] d. Drive the rotating wheel 3 to rotate, so that the adsorption container 2 passes the recycling station above the recycling tank 901;

[0059] e. Control the opening and closing plate 202 to open, discharge the adsorbed particles in the adsorption container 2 through the recycling slot, and close the opening and closing plate 202 after completion;

[0060] f. Control the transmission channel 10 in the rotor 3 to supply cold medium to the temperature-conducting pipe 5, and the system operates in condensation mode.

[0061] Furthermore, the adsorbent particles recovered during the summer mode activation process are transported to a centralized maintenance center. At this center, the particles undergo deep and uniform heating regeneration in a dedicated regeneration furnace to completely restore their adsorption capacity; subsequently, fine powder generated due to wear is removed by a vibrating screen; finally, approximately 10% new adsorbent particles are added and mixed and homogenized. This batch of adsorbent particles, with performance as good as new, is returned to the hopper of feeding device 8 for operation in the next winter cycle, thus forming an economical and environmentally friendly resource cycle.

[0062] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the invention and are protected by patent law.

Claims

1. A dehumidification device for blast furnace blast air, characterized in that, The blower dehumidification device includes a rotor (3), a temperature guide pipe (5), an adsorption container (2), a control system, and a regeneration fan (4); The rotor (3) has a stator (302) and a rotor (301). The rotor (3) has multiple transmission channels (10) that connect the stator (302) and the rotor (301). The stator (302) and the rotor (301) are each provided with an input port (501) and an output port (502) of the transmission channel (10). The temperature-conducting pipe (5) is connected to the input port (501) and the output port (502) of the rotor (301). The rotating wheel (3) is located inside the ventilation pipe (1), the adsorption container (2) is installed on the surface of the rotor (301), the adsorption container (2) is provided with holes (7) that allow air to pass through, and the temperature conducting pipe (5) is located inside the adsorption container (2). A feeding device (8) is provided above the ventilation pipe (1), and adsorption particles are provided inside the feeding device (8). A recycling device (9) is provided below the ventilation pipe (1) for disassembling and recycling the adsorption particles inside the adsorption container (2). The control system is connected to the impeller (3) and the regeneration fan (4) and is configured as follows: When the system enters the winter adsorption mode, the heat medium is introduced into the heat pipe (5) and the regeneration fan (4) is started. When the system enters the summer condensation mode, the cooling medium is introduced into the temperature-conducting pipe (5).

2. The blast furnace dehumidification device according to claim 1, characterized in that, The shape formed by the temperature-conducting tube (5) inside the adsorption container (2) is the same as the internal shape of the adsorption container (2).

3. The blast furnace dehumidification device according to claim 2, characterized in that, A temperature-conducting plate (6) is provided on the temperature-conducting tube (5) inside the adsorption container (2).

4. The blast furnace dehumidification device according to claim 1, characterized in that, The adsorption container (2) includes a hinged plate (202) and a main body (201). One end of the hinged plate (202) is mounted on the main body (201) via a pivot, and the other end of the hinged plate (202) is fixed to the main body (201) via a bayonet.

5. A blast furnace dehumidification device according to claim 4, characterized in that, The feeding device (8) includes a feeding trough (801) opened on the upper part of the ventilation pipe (1), a feeding platform (802), and a transfer device (803). The feeding platform (802) is set on the outer wall of the ventilation pipe (1), and the transfer device (803) is fixedly installed on the feeding platform (802). The transfer device (803) stores the adsorbed particles. The opening and closing plate (202) is provided with a feeding port (804), which is connected to the transfer equipment (803) through a pipe.

6. A blast furnace dehumidification device according to claim 4, characterized in that, The recycling device (9) includes a recycling trough (901) opened at the lower part of the ventilation pipe (1) and a storage compartment (902), the storage compartment (902) being fixed below the recycling trough (901).

7. A blast furnace dehumidification device according to claim 6, characterized in that, The storage compartment (902) is equipped with a cleaning station, which is equipped with a mechanical vibration device, a high-pressure fluid jetting device or a mechanical crushing device to assist in material discharge.

8. A blast furnace dehumidification device according to claim 1, characterized in that, The adsorption container (2) has a first windward surface (203) and a second windward surface (204), and the holes (7) on the first windward surface (203) and the second windward surface (204) are staggered.

9. A blast furnace dehumidification device according to claim 4, characterized in that, The inner wall of the adsorption container (2) is provided with a hydrophilic coating.

10. A dehumidification method for the blower dehumidification device according to any one of claims 6-7, characterized in that, The following seasonal operating procedures are included: Winter mode activation process: a. Drive the rotating wheel to rotate, so that the adsorption container passes the feeding station below the feeding device; b. Control the opening and closing plate to open, fill the adsorption container with adsorption particles through the feeding device, and close the opening and closing plate after completion; c. Control the transmission channel in the rotating wheel to supply the heat medium to the heat-conducting pipe, and the system operates in adsorption mode; Summer Mode Activation Process: d. Drive the rotating wheel to rotate, so that the adsorption container passes the recycling station above the recycling tank; e. Control the opening and closing plate to open, discharge the adsorbed particles in the adsorption container through the recovery tank, and close the opening and closing plate after completion; f. Control the transmission channel in the rotor to supply cold medium to the temperature-conducting pipe, and the system operates in condensation mode.

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