A flue gas waste heat boiler

Abstract

The utility model discloses a flue gas waste heat boiler in the technical field of energy conservation and environmental protection, comprising a boiler body, a second flue gas exhaust pipe is fixedly connected to one side of the superconducting heat pipe waste heat recovery device, a draft fan is fixedly installed on one side of the second flue gas exhaust pipe, and an air inlet pipe is fixedly connected to one side of the superconducting heat pipe waste heat recovery device. The waste heat of the flue gas inside the boiler body enters the inner sides of a heating box and the superconducting heat pipe waste heat recovery device from the first flue gas exhaust pipe, and is sent out from the second flue gas exhaust pipe to the draft fan after being cooled by the superconducting heat pipe waste heat recovery device after absorbing heat. Through the blower, the air inlet pipe and the heat inlet pipe, normal temperature air is blown and compressed into the inside of the air inlet pipe by the blower, and then enters the heating surface of the superconducting heat pipe waste heat recovery device, and is sent out by the heat inlet pipe after being heated by the superconducting heat pipe waste heat recovery device. The sent hot air can enter the inside of the boiler body for heating, and can also be used for combustion assistance or drying materials, thereby improving the practical effect of the device.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy conservation and environmental protection, and specifically relates to a flue gas waste heat boiler. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The original meaning of a pot refers to a water container heated on fire, and a furnace refers to a place where fuel is burned. A boiler includes two major parts: a pot and a furnace. The hot water or steam generated in the boiler can directly provide the required thermal energy for industrial production and people's lives. During the use of the boiler, a large amount of high-temperature dusty flue gas (about 1000-1200℃) will be generated. The sensible heat of the flue gas accounts for more than 10% of the total energy consumption of electric furnace steelmaking. If it is directly discharged into the atmosphere, it will cause serious waste of waste heat resources and serious environmental pollution. Therefore, it is necessary to first cool it through a waste heat boiler and utilize the waste heat before entering the subsequent bag dust collector for dust removal and discharge.

[0003] Existing flue gas waste heat boilers still have some defects. Most of the flue gas waste heat boilers not only lead to low waste heat recovery rate, but also lead to low cooling efficiency, poor cooling effect and poor use effect. For this reason, we propose a flue gas waste heat boiler. Utility Model Content

[0004] The utility model aims to provide a flue gas waste heat boiler to solve the problem that the flue gas waste heat boiler proposed in the above background technology not only leads to low waste heat recovery rate but also leads to low cooling efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas waste heat boiler, comprising a boiler body, a first smoke exhaust pipe is provided on one side of the boiler body, a heating box is provided on one side of the first smoke exhaust pipe, a water outlet is provided on one side of the heating box, a water inlet is provided on the top of the heating box, a superheat pipe waste heat recovery device is provided on one side of the heating box, a support frame is provided on the bottom of the superheat pipe waste heat recovery device, a second smoke exhaust pipe is provided on one side of the superheat pipe waste heat recovery device, an induced draft fan is provided on one side of the second smoke exhaust pipe, an air inlet pipe is provided on one side of the superheat pipe waste heat recovery device, a blower is provided on one side of the air inlet pipe, a heat inlet pipe is provided on one side of the superheat pipe waste heat recovery device, a heating chamber is provided on the inner side of the heating box, a water collecting box is provided on the inner side of the heating chamber, and a U-shaped pipe is provided on one side of the water collecting box.

[0006] Preferably, a first smoke exhaust pipe is fixedly connected to one side of the boiler body, a heating box is fixedly installed on one side of the first smoke exhaust pipe, and a water outlet is fixedly installed on one side of the heating box.

[0007] Preferably, a water inlet is fixedly installed on the top of the heating box, one end of the first smoke exhaust pipe is fixedly connected to a superconducting heat pipe waste heat recovery device, and the bottom of the superconducting heat pipe waste heat recovery device is fixedly connected to a support frame.

[0008] Preferably, a second smoke exhaust pipe is fixedly connected to one side of the superconducting heat pipe waste heat recovery device, and an induced draft fan is fixedly installed on one side of the second smoke exhaust pipe.

[0009] Preferably, an air inlet pipe is fixedly connected to one side of the superconducting heat pipe waste heat recovery device, a blower is fixedly installed on one side of the air inlet pipe, a heat inlet pipe is fixedly connected to one side of the superconducting heat pipe waste heat recovery device, and one end of the heat inlet pipe is fixedly connected to one side of the boiler body.

[0010] Preferably, a heating chamber is fixedly opened on the inner side of the heating box, a water collecting box is fixedly installed on one side of the interior of the heating chamber, a U-shaped tube is fixedly connected to one side of the water collecting box, and a plurality of U-shaped tubes are provided.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The waste heat of flue gas inside the boiler body enters the inner side of the heating box and the superconducting heat pipe waste heat recovery device from the first exhaust pipe, and is sent out from the second exhaust pipe to the induced draft fan after being cooled by the superconducting heat pipe waste heat recovery device. Through the blower, air inlet pipe and heat inlet pipe, the normal temperature air is compressed by the blower into the inside of the air inlet pipe, and then enters the heating surface of the superconducting heat pipe waste heat recovery device. After being heated by the superconducting heat pipe waste heat recovery device, it is sent out by the heat inlet pipe. The sent hot air can enter the inside of the boiler body for heating, and can also be used to support combustion or dry materials, thereby improving the practical effect of the device.

[0013] 2. The provided water inlet facilitates the addition of water to the interior of the water collecting tank. The provided U-shaped tube allows the water inside the water collecting tank to be evenly dispersed into the U-shaped tube, so that it can be in full contact with the high-temperature flue gas passing through the heating chamber, thereby improving the efficiency of heating the water inside the water collecting tank. The provided water outlet facilitates the discharge of hot water inside the water collecting tank, thereby improving the utilization effect of the waste heat from the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the top structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the side section structure of the heating box of the present utility model.

[0017] In the figure: 1. Boiler body; 2. First smoke exhaust pipe; 3. Heating box; 4. Water outlet; 5. Water inlet; 6. Superconducting heat pipe waste heat recovery equipment; 7. Support frame; 8. Second smoke exhaust pipe; 9. induced draft fan; 10. Heat inlet pipe; 11. Air inlet pipe; 12. Blower; 13. Heating chamber; 14. Water collecting box; 15. U-shaped pipe. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 The utility model provides a technical solution: a flue gas waste heat boiler comprises a boiler body 1, a first smoke exhaust pipe 2 is arranged on one side of the boiler body 1, a heating box 3 is arranged on one side of the first smoke exhaust pipe 2, a water outlet 4 is arranged on one side of the heating box 3, a water inlet 5 is arranged on the top of the heating box 3, a superconducting heat pipe waste heat recovery device 6 is arranged on one side of the heating box 3, a support frame 7 is arranged at the bottom of the superconducting heat pipe waste heat recovery device 6, a second smoke exhaust pipe 8 is arranged on one side of the superconducting heat pipe waste heat recovery device 6, a draft fan 9 is arranged on one side of the second smoke exhaust pipe 8, an air inlet pipe 11 is arranged on one side of the superconducting heat pipe waste heat recovery device 6, a blower 12 is arranged on one side of the air inlet pipe 11, a heat inlet pipe 10 is arranged on one side of the superconducting heat pipe waste heat recovery device 6, a heating chamber 13 is arranged on the inner side of the heating box 3, a water collecting box 14 is arranged on the inner side of the heating chamber 13, and a U-shaped pipe 15 is arranged on one side of the water collecting box 14.

[0020] Specifically, a first smoke exhaust pipe 2 is fixedly connected to one side of the boiler body 1, a heating box 3 is fixedly installed on one side of the first smoke exhaust pipe 2, a water outlet 4 is fixedly installed on one side of the heating box 3, a water inlet 5 is fixedly installed on the top of the heating box 3, one end of the first smoke exhaust pipe 2 is fixedly connected to a superconducting heat pipe waste heat recovery device 6, a support frame 7 is fixedly connected to the bottom of the superconducting heat pipe waste heat recovery device 6, a second smoke exhaust pipe 8 is fixedly connected to one side of the superconducting heat pipe waste heat recovery device 6, and a second smoke exhaust pipe 8 is fixedly installed on one side of the second smoke exhaust pipe 8. An induced draft fan 9 is installed, an air inlet pipe 11 is fixedly connected to one side of the superconducting heat pipe waste heat recovery device 6, a blower 12 is fixedly installed on one side of the air inlet pipe 11, a heat inlet pipe 10 is fixedly connected to one side of the superconducting heat pipe waste heat recovery device 6, one end of the heat inlet pipe 10 is fixedly connected to one side of the boiler body 1, a heating chamber 13 is fixedly opened on the inner side of the heating box 3, a water collecting box 14 is fixedly installed on one side of the interior of the heating chamber 13, a U-shaped tube 15 is fixedly connected to one side of the water collecting box 14, and a plurality of U-shaped tubes 15 are provided.

[0021] In this embodiment, the high-temperature flue gas in the boiler body 1 is conveniently discharged through the first flue gas exhaust pipe 2, the second flue gas exhaust pipe 8 and the induced draft fan 9. The flue gas waste heat inside the boiler body 1 enters the heating box 3 and the inner side of the superconducting heat pipe waste heat recovery device 6 from the first flue gas exhaust pipe 2, and is sent from the second flue gas exhaust pipe 8 to the induced draft fan 9 after being absorbed and cooled by the superconducting heat pipe waste heat recovery device 6, and then discharged into the atmosphere after being treated by the subsequent purification device. The water inlet 5 is convenient to add water to the inside of the water collecting box 14, and the water inside the water collecting box 14 can be evenly dispersed into the U-shaped tube 15 through the U-shaped tube 15, so that it can be heated and cooled. The high-temperature flue gas passing through the hot chamber 13 is fully contacted to improve the efficiency of heating the water in the water collecting tank 14. The hot water in the water collecting tank 14 is easily discharged through the provided water outlet 4. Through the provided blower 12, air inlet pipe 11 and heat inlet pipe 10, room temperature air is compressed by the blower 12 into the inside of the air inlet pipe 11, and then enters the heating surface of the superconducting heat pipe waste heat recovery device 6. After being heated by the superconducting heat pipe waste heat recovery device 6, it is sent out by the heat inlet pipe 10. The sent hot air can enter the inside of the boiler body 1 for heating, and can also be used to assist combustion or dry materials, thereby improving the practical effect of the device.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas waste heat boiler, comprising a boiler body (1), characterized in that: A first smoke exhaust pipe (2) is provided on one side of the boiler body (1), a heating box (3) is provided on one side of the first smoke exhaust pipe (2), a water outlet (4) is provided on one side of the heating box (3), a water inlet (5) is provided on the top of the heating box (3), a superconducting heat pipe waste heat recovery device (6) is provided on one side of the heating box (3), a support frame (7) is provided on the bottom of the superconducting heat pipe waste heat recovery device (6), and a second smoke exhaust pipe (8) is provided on one side of the superconducting heat pipe waste heat recovery device (6). ), a draft fan (9) is provided on one side of the second smoke exhaust pipe (8), an air inlet pipe (11) is provided on one side of the superconducting heat pipe waste heat recovery equipment (6), a blower (12) is provided on one side of the air inlet pipe (11), a heat inlet pipe (10) is provided on one side of the superconducting heat pipe waste heat recovery equipment (6), a heating chamber (13) is provided on the inner side of the heating box (3), a water collecting box (14) is provided on the inner side of the heating chamber (13), and a U-shaped pipe (15) is provided on one side of the water collecting box (14).

2. A flue gas waste heat boiler according to claim 1, characterized in that: A first smoke exhaust pipe (2) is fixedly connected to one side of the boiler body (1), a heating box (3) is fixedly installed on one side of the first smoke exhaust pipe (2), and a water outlet (4) is fixedly installed on one side of the heating box (3).

3. The flue gas waste heat boiler according to claim 1, characterized in that: A water inlet (5) is fixedly installed on the top of the heating box (3), one end of the first smoke exhaust pipe (2) is fixedly connected to a superconducting heat pipe waste heat recovery device (6), and the bottom of the superconducting heat pipe waste heat recovery device (6) is fixedly connected to a support frame (7).

4. The flue gas waste heat boiler according to claim 1, characterized in that: A second smoke exhaust pipe (8) is fixedly connected to one side of the superconducting heat pipe waste heat recovery device (6), and an induced draft fan (9) is fixedly installed on one side of the second smoke exhaust pipe (8).

5. The flue gas waste heat boiler according to claim 1, characterized in that: One side of the superconducting heat pipe waste heat recovery device (6) is fixedly connected to an air inlet pipe (11), one side of the air inlet pipe (11) is fixedly installed with a blower (12), one side of the superconducting heat pipe waste heat recovery device (6) is fixedly connected to a heat inlet pipe (10), and one end of the heat inlet pipe (10) is fixedly connected to one side of the boiler body (1).

6. The flue gas waste heat boiler according to claim 1, characterized in that: A heating chamber (13) is fixedly provided on the inner side of the heating box (3), a water collecting box (14) is fixedly installed on one side of the interior of the heating chamber (13), a U-shaped tube (15) is fixedly connected to one side of the water collecting box (14), and a plurality of U-shaped tubes (15) are provided.

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