Blast furnace gas desulfurization and denitrification waste heat recovery device

Abstract

The utility model relates to the technical field of gas treatment, and discloses a blast furnace gas desulfurization and denitrification waste heat recovery device which comprises a combustion assembly, the combustion assembly comprises a combustion chamber, and a hot air exhaust pipe is fixedly installed at the top in the combustion chamber. Through the matching of the tenons and the mortises and the structural operation of the embedded grooves in the heat exchange pieces, the heat exchange pieces can be accurately installed in the heat exchange bin, and the heat exchange pieces are driven to generate an efficient heat conduction layout in the heat exchange bin; through structural operation of an air blower at the top of the second supporting frame, a water pump at the top of the first supporting frame and a heat exchange piece, the air blower drives hot air to enter the heat exchange bin from the combustion chamber through a hot air exhaust pipe and an air conveying pipe and then be discharged through a cold air exhaust pipe, and the water pump drives cold water to enter a water storage tank from the outside through a first collecting pipe, an infusion pipe, a liquid outlet pipe and a second collecting pipe; and hot air and cold water are driven to stably flow in the heat exchange bin and generate heat exchange, so that the effect of blast furnace gas waste heat recovery is achieved.

Description

Technical Field

[0001] This utility model relates to the field of gas treatment technology, and in particular to a waste heat recovery device for desulfurization and denitrification of blast furnace gas. Background Technology

[0002] With the development of the steel industry, this waste heat recovery device is used in the purification and energy recovery of blast furnace gas.

[0003] In practical use, similar waste heat recovery devices still have many defects, such as: the existing waste heat recovery devices may not be installed accurately enough, resulting in low heat exchange efficiency; at the same time, the existing waste heat recovery devices are not precise enough in the flow control of hot air and cold water, resulting in insufficient heat exchange between hot air and cold water and low energy recovery efficiency. Therefore, it is necessary to design a waste heat recovery device for desulfurization and denitrification of blast furnace gas. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a waste heat recovery device for desulfurization and denitrification of blast furnace gas.

[0005] This utility model is achieved using the following technical solution: a blast furnace gas desulfurization and denitrification waste heat recovery device, comprising a combustion assembly, wherein the combustion assembly includes a combustion chamber, and a hot air exhaust pipe is fixedly installed on the top of the combustion chamber, and further comprising:

[0006] A hot air exhaust assembly includes a heat exchange chamber fixedly installed on one side of the combustion chamber, an air supply pipe fixedly installed inside the heat exchange chamber, and a blower fixedly connected to the output end of the air supply pipe.

[0007] A cold water delivery assembly includes a delivery pipe fixedly installed inside a heat exchange chamber, a second manifold fixedly installed at the output end of the delivery pipe, and the output end of the second manifold fixedly installed inside a water storage tank.

[0008] A heat exchange assembly, the heat exchange assembly including heat exchange plates that are slidably installed inside a heat exchange chamber.

[0009] As a further improvement to the above solution, a hot air exhaust pipe is fixedly connected to the input end of the air supply pipe, a cold air exhaust pipe is fixedly installed at the output end of the air supply pipe, and a blower is fixedly connected to the output end of the cold air exhaust pipe.

[0010] The above technical solution enables the hot air to flow in an orderly manner within the device, thereby providing a stable source of hot air for heat exchange and timely exhausting the cooled gas, ensuring the stability of the supply and discharge of hot air during the heat exchange process.

[0011] As a further improvement to the above solution, a first support frame is fixedly installed on the outer surface of the heat exchange chamber, a water pump is fixedly installed on the top of the first support frame, and the output end of the water pump is fixedly connected to a first manifold.

[0012] The above technical solution enables cold water to be stably drawn from the outside and transported to the first manifold, thereby providing a stable transport power for the cold water to enter the heat exchange chamber for heat exchange, and ensuring that the cold water can continuously participate in the heat exchange process.

[0013] As a further improvement to the above solution, the output end of the first manifold is fixedly connected to an infusion tube, the output end of the infusion tube is fixedly connected to an outlet tube, and the output end of the outlet tube is fixedly connected to a second manifold.

[0014] The above technical solution ensures the orderly flow of cold water within and out of the heat exchange chamber, thereby guaranteeing the rationality of the flow path of cold water during the heat exchange process and improving the efficiency of heat exchange between cold water and hot air.

[0015] As a further improvement to the above solution, a drain pipe is provided on the outer surface of the water storage tank, and a second support frame is fixedly installed on the outer surface of the water storage tank, with a blower fixedly installed on the top of the second support frame.

[0016] The above technical solutions facilitate the convenient handling of heated water and the effective driving of hot air, thereby enabling convenient management of hot water and ensuring the normal flow of hot air within the device.

[0017] As a further improvement to the above solution, a mortise is fixedly installed on the outer surface of the heat exchange chamber, a tenon is inserted into the inside of the mortise, an installation plate is fixedly installed on the outer surface of the tenon, and a handle is fixedly installed on the outer surface of the installation plate.

[0018] The above technical solutions enable convenient installation and disassembly of heat exchange plates in the heat exchange chamber, thereby facilitating the installation and maintenance of heat exchange plates and improving the maintainability of the equipment.

[0019] As a further improvement to the above solution, a heat exchange plate is fixedly installed on the side of the mounting plate away from the handle. The heat exchange plate is slidably installed inside the heat exchange chamber. An embedding groove is opened inside the heat exchange plate, and the embedding groove matches the air supply pipe and the liquid supply pipe.

[0020] The above technical solutions have led to the development of a highly efficient heat conduction layout for heat exchange plates and hot air and cold water pipes, thereby improving heat exchange efficiency and facilitating the installation and adjustment of heat exchange plates within the heat exchange chamber.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This invention utilizes a structure that matches the tenon and mortise and incorporates an embedded groove within the heat exchange plate. This allows the heat exchange plate to be accurately installed within the heat exchange chamber and to be well-matched with the air and liquid delivery pipes. This enables the heat exchange plate to achieve an efficient heat conduction layout within the heat exchange chamber, thereby ensuring heat exchange efficiency. Furthermore, the combination of the handle, mounting plate, and tenon facilitates disassembly when the heat exchange plate needs maintenance or replacement, thus reducing equipment maintenance costs and extending equipment lifespan.

[0023] This utility model utilizes a structure consisting of a blower at the top of the second support frame, a water pump at the top of the first support frame, and heat exchange plates. The blower drives hot air from the combustion chamber through the hot air exhaust pipe and the air supply pipe to the heat exchange chamber, and then discharges it through the cold air exhaust pipe. The water pump drives cold water from the outside through the first manifold, the liquid supply pipe, the liquid outlet pipe, and the second manifold to the water storage tank. This facilitates a stable flow of hot air and cold water within the heat exchange chamber and generates heat exchange, thereby achieving the effect of blast furnace gas waste heat recovery, improving energy utilization, and reducing energy waste. At the same time, the cold water is heated and stored in the water storage tank, and can be centrally treated through the drain pipe. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 3 This is a schematic diagram of the overall internal structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the heat exchange chamber structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the heat exchange component structure of this utility model.

[0029] Explanation of key symbols:

[0030] 1. Combustion assembly; 101. Combustion chamber; 102. Hot air exhaust pipe; 2. Hot air exhaust assembly; 201. Heat exchange chamber; 202. Air duct; 203. Cold air exhaust pipe; 204. Blower; 205. First support frame; 206. Water pump; 207. Tenon; 3. Cold water delivery assembly; 301. First manifold; 302. Infusion pipe; 303. Outlet pipe; 304. Second manifold; 305. Water tank; 306. Drain pipe; 307. Second support frame; 4. Heat exchange assembly; 401. Tenon; 402. Mounting plate; 403. Handle; 404. Heat exchange plate; 405. Embedded groove. Detailed Implementation

[0031] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] Example:

[0033] Please combine Figure 1-5 The blast furnace gas desulfurization and denitrification waste heat recovery device of this embodiment includes a combustion assembly 1, which includes a combustion chamber 101. A hot air exhaust pipe 102 is fixedly installed on the top of the combustion chamber 101. The device also includes:

[0034] Hot air exhaust assembly 2 includes a heat exchange chamber 201 fixedly installed on one side of the combustion chamber 101. An air duct 202 is fixedly installed inside the heat exchange chamber 201, and a blower 204 is fixedly connected to the output end of the air duct 202.

[0035] The cold water delivery assembly 3 includes a delivery pipe 302 fixedly installed inside the heat exchange chamber 201, a second manifold 304 fixedly installed at the output end of the delivery pipe 302, and the output end of the second manifold 304 fixedly installed inside the water storage tank 305.

[0036] The heat exchange assembly 4 includes heat exchange plates 404 that are slidably installed inside the heat exchange chamber 201.

[0037] A hot air exhaust pipe 102 is fixedly connected to the inlet end of the air duct 202, a cold air exhaust pipe 203 is fixedly installed at the outlet end of the air duct 202, and a blower 204 is fixedly connected to the outlet end of the cold air exhaust pipe 203.

[0038] A first support frame 205 is fixedly installed on the outer surface of the heat exchange chamber 201. A water pump 206 is fixedly installed on the top of the first support frame 205. The output end of the water pump 206 is fixedly connected to a first manifold 301.

[0039] The hot air enters the air supply pipe 202 through the hot air exhaust pipe 102, and the air supply pipe 202 delivers the hot air into the heat exchange chamber 201. After heat exchange in the heat exchange chamber 201, the hot air is discharged from the heat exchange chamber 201 through the cold air exhaust pipe 203 under the action of the blower 204.

[0040] The output end of the first manifold 301 is fixedly connected to the infusion tube 302, the output end of the infusion tube 302 is fixedly connected to the outlet tube 303, and the output end of the outlet tube 303 is fixedly connected to the second manifold 304.

[0041] A drain pipe 306 is provided on the outer surface of the water storage tank 305, and a second support frame 307 is fixedly installed on the outer surface of the water storage tank 305. A blower 204 is fixedly installed on the top of the second support frame 307.

[0042] Inside the heat exchange chamber 201, a heat exchange plate 404 is inserted between the infusion pipe 302 and the air supply pipe 202. The heat of the high-temperature gas in the air supply pipe 202 is transferred to the cold water in the infusion pipe 302 through the heat exchange plate 404, thereby achieving heat exchange and heating the water in the infusion pipe 302.

[0043] The outer surface of the heat exchange chamber 201 is fixedly installed with a mortise 207, and a tenon 401 is inserted into the inside of the mortise 207. The outer surface of the tenon 401 is fixedly installed with a mounting plate 402, and the outer surface of the mounting plate 402 is fixedly installed with a handle 403.

[0044] A heat exchange plate 404 is fixedly installed on the side of the mounting plate 402 away from the handle 403. The heat exchange plate 404 is slidably installed inside the heat exchange chamber 201. An embedding groove 405 is provided inside the heat exchange plate 404. The embedding groove 405 and the air supply pipe 202 and the liquid supply pipe 302 are matched.

[0045] The implementation principle of the waste heat recovery device for desulfurization and denitrification of blast furnace gas in this embodiment is as follows: Utilizing the structural feature of the matching tenon 401 and mortise 207, the mounting plate 402 with heat exchange plate 404 is installed into the heat exchange chamber 201. The heat exchange plate 404 has an embedded groove 405 that matches the air duct 202 and liquid duct 302, providing a basic structural guarantee for the subsequent heat exchange process. When the heat exchange plate 404 needs to be replaced or maintained after prolonged use, the mounting plate 402 can be pulled outward by holding the handle 403 on the mounting plate 402. Due to the insertion structure of the tenon 401 and mortise 207, the heat exchange plate 404 can be easily removed from the heat exchange chamber 201. This design facilitates equipment maintenance and replacement of the heat exchange plate 404.

[0046] Driven by the blower 204 at the top of the second support frame 307, the hot air after desulfurization and denitrification of the blast furnace gas in the combustion chamber 101 enters the air conveying pipe 202 through the hot air discharge pipe 102. The air conveying pipe 202 delivers the hot air to the heat exchange chamber 201. After heat exchange in the heat exchange chamber 201, the hot air is discharged from the heat exchange chamber 201 through the cold air discharge pipe 203 under the action of the blower 204.

[0047] Driven by the water pump 206 at the top of the first support frame 205, the cooled water is transported to the first manifold 301 and then flows from the first manifold 301 into the infusion pipe 302. Inside the heat exchange chamber 201, a heat exchange plate 404 is inserted between the infusion pipe 302 and the air duct 202. The heat of the high-temperature gas in the air duct 202 is transferred to the cold water in the infusion pipe 302 through the heat exchange plate 404, thereby achieving heat exchange and heating the water in the infusion pipe 302. The water heated by the heat exchange flows through the outlet pipe 303 connected to the output end of the infusion pipe 302 and then into the second manifold 304, and finally into the water storage tank 305 for storage. When it is necessary to centrally process the heated water, it can be done through the drain pipe 306 opened on the outer surface of the water storage tank 305.

[0048] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A waste heat recovery device for desulfurization and denitrification of blast furnace gas, comprising a combustion assembly (1), wherein the combustion assembly (1) includes a combustion chamber (101), and a hot air exhaust pipe (102) is fixedly installed on the top of the combustion chamber (101), characterized in that, Also includes: Hot air exhaust assembly (2), the hot air exhaust assembly (2) includes a heat exchange chamber (201) fixedly installed on one side of the combustion chamber (101), an air duct (202) fixedly installed inside the heat exchange chamber (201), and a blower (204) fixedly connected to the output end of the air duct (202); The cold water delivery assembly (3) includes a delivery pipe (302) fixedly installed inside the heat exchange chamber (201), and a second manifold (304) fixedly installed at the output end of the delivery pipe (302), and the output end of the second manifold (304) fixedly installed inside the water storage tank (305). The heat exchange assembly (4) includes heat exchange plates (404) that are slidably installed inside the heat exchange chamber (201).

2. The waste heat recovery device for desulfurization and denitrification of blast furnace gas as described in claim 1, characterized in that: The air supply pipe (202) is fixedly connected to a hot air exhaust pipe (102) at its input end, and a cold air exhaust pipe (203) is fixedly installed at its output end. A blower (204) is fixedly connected to the output end of the cold air exhaust pipe (203).

3. The waste heat recovery device for desulfurization and denitrification of blast furnace gas as described in claim 1, characterized in that: A first support frame (205) is fixedly installed on the outer surface of the heat exchange chamber (201), and a water pump (206) is fixedly installed on the top of the first support frame (205). The output end of the water pump (206) is fixedly connected to a first manifold (301).

4. The waste heat recovery device for desulfurization and denitrification of blast furnace gas as described in claim 3, characterized in that: The output end of the first manifold (301) is fixedly connected to an infusion tube (302), the output end of the infusion tube (302) is fixedly connected to an outlet tube (303), and the output end of the outlet tube (303) is fixedly connected to a second manifold (304).

5. The waste heat recovery device for desulfurization and denitrification of blast furnace gas as described in claim 1, characterized in that: The outer surface of the water storage tank (305) is provided with a drain pipe (306), and a second support frame (307) is fixedly installed on the outer surface of the water storage tank (305). A blower (204) is fixedly installed on the top of the second support frame (307).

6. The waste heat recovery device for desulfurization and denitrification of blast furnace gas as described in claim 1, characterized in that: The heat exchange chamber (201) is fixedly installed with a mortise (207) on its outer surface. A tenon (401) is inserted into the mortise (207). An installation plate (402) is fixedly installed on the outer surface of the tenon (401). A handle (403) is fixedly installed on the outer surface of the installation plate (402).

7. The waste heat recovery device for desulfurization and denitrification of blast furnace gas as described in claim 6, characterized in that: A heat exchange plate (404) is fixedly installed on the side of the mounting plate (402) away from the handle (403). The heat exchange plate (404) is slidably installed inside the heat exchange chamber (201). An embedding groove (405) is provided inside the heat exchange plate (404). The embedding groove (405) and the air supply pipe (202) are matched with the infusion pipe (302).

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