Flue gas waste heat recovery device

Abstract

The utility model relates to the technical field of waste heat recovery devices, in particular to a flue gas waste heat recovery device which comprises a water inlet pipe, a water outlet pipe and a waste heat treatment assembly, the waste heat treatment assembly comprises a mounting frame, a gas inlet pipe, a plurality of steel pipes, a filter pipe, a gas outlet pipe and a plurality of threaded pipes, the threaded pipe is wound on the outer wall of the steel pipe, the gas inlet pipe discharges flue gas into the steel pipe, the outer side threaded pipe feeds water to absorb and utilize heat to heat water, then hot water is discharged for use, dust in the flue gas is adsorbed through the filter pipe after the flue gas enters the steel pipe, and the filter pipe is replaced or taken out for cleaning after the filter pipe is used for a certain period; the problems that according to an existing device, smoke enters an inner container and then passes through a waste heat recovery device in the inner container, heat is absorbed, water is heated, waste heat is utilized, and chemical substances in smoke dust are prone to being attached to the recovery device after long-time use, and the recovery device is corroded are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery devices, in particular to a flue gas waste heat recovery device. Background Art

[0002] The flue gas generated during the production and processing is directly discharged into the atmosphere without waste heat recovery, which will cause energy waste and environmental pollution. In order to reduce energy waste, the flue gas is generally passed through a flue gas recovery device for energy recovery before being discharged into the atmosphere.

[0003] There is an existing flue gas waste heat recovery device (CN212430919U), which includes an inner tank, on which a water inlet pipe and a water outlet pipe are fixedly connected. The inner tank is provided with a waste heat recovery device which can effectively improve the flue gas waste heat recovery rate and further utilize the remaining waste heat in the flue gas after waste heat recovery. This flue gas waste heat recovery device can optimize the existing flue gas waste heat recovery technology, improve the flue gas waste heat recovery amount, and further utilize the remaining heat in the flue gas after waste heat recovery, thereby achieving the purpose of more efficient recovery of flue gas waste heat.

[0004] However, in the above utility model, the smoke enters the inner tank and then passes through the waste heat recovery device in the inner tank to absorb heat to heat water to utilize the waste heat. Long-term use can easily cause the chemical substances in the smoke to adhere to the recovery device and corrode the recovery device. Utility Model Content

[0005] The utility model aims to provide a flue gas waste heat recovery device, aiming to solve the problem that in the existing device, the flue gas enters the inner tank and then passes through the waste heat recovery device in the inner tank to absorb heat to heat water and utilize the waste heat. Long-term use can easily cause chemical substances in the smoke to adhere to the recovery device and corrode the recovery device.

[0006] To achieve the above-mentioned purpose, the utility model provides a flue gas waste heat recovery device, including a water inlet pipe, a water outlet pipe and a waste heat treatment component, wherein the waste heat treatment component includes a mounting frame, an air inlet pipe, a plurality of steel pipes, a filter pipe, an air outlet pipe and a plurality of threaded pipes;

[0007] The plurality of threaded pipes are connected to the water inlet pipe and are located on one side of the water inlet pipe, the water outlet pipe is connected to the threaded pipe and is located on a side of the threaded pipe away from the water inlet pipe, the steel pipe is fixedly connected to the threaded pipe and is located on one side of the threaded pipe, the air inlet pipe is connected to the steel pipe and is located on one side of the steel pipe, the air outlet pipe is connected to the steel pipe and is located on the top of the steel pipe, the filter pipe is slidably connected to the steel pipe and is located on the inner side of the steel pipe, and the mounting frame is fixedly connected to the plurality of steel pipes and is located on the outer side of the steel pipe.

[0008] Wherein, the waste heat treatment component also includes an outer shell and an insulation layer, the outer shell is fixedly connected to the mounting frame and is located on the outside of the mounting frame, and the insulation layer is fixedly connected to the outer shell and is located inside the outer shell.

[0009] Among them, the waste heat treatment component also includes a control valve, a water tank and a water pump, the control valve is arranged on the water inlet pipe, the water tank is connected to the water outlet pipe and is located on one side of the water outlet pipe, and the water pump is connected to the water tank and is located on one side of the water tank.

[0010] Wherein, the waste heat treatment component also includes a temperature sensor and a water temperature sensor, the temperature sensor is connected to the outer shell and is located on the inner side of the outer shell, and the water temperature sensor is connected to the water tank and is located on one side of the water tank.

[0011] Among them, the waste heat treatment component also includes a bellows, a mounting plate and a fixing bolt. The bellows is connected to the exhaust pipe and is located on one side of the pipe. The mounting plate is arranged on the bellows. The fixing bolt is threadedly connected to the mounting plate and is located on one side of the mounting plate.

[0012] The utility model discloses a flue gas waste heat recovery device, wherein the water inlet pipe is used for water intake of the threaded pipe, and the water outlet pipe is used for water discharge of the threaded pipe, water enters the threaded pipe, and the threaded pipe is wound around the outer wall of the steel pipe, the air inlet pipe discharges the flue gas into the steel pipe, and the outer threaded pipe passes water to absorb heat to heat water, and then discharges the hot water for use, and after the flue gas enters the steel pipe, the dust in the flue gas is adsorbed by the filter tube, and the filter tube is replaced or taken out for cleaning after a certain period of use, and the mounting frame is used to install and support the steel pipe, which solves the problem that the flue gas in the existing device enters the inner tank and then passes through the waste heat recovery device in the inner tank to absorb heat to heat water for waste heat, and long-term use easily causes chemical substances in the smoke to adhere to the recovery device and corrode the recovery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a structural diagram of a flue gas waste heat recovery device according to the first embodiment of the utility model.

[0015] Figure 2 It is a partial structural schematic diagram of a flue gas waste heat recovery device according to the first embodiment of the utility model.

[0016] Figure 3It is a cross-sectional schematic diagram of a flue gas waste heat recovery device according to the second embodiment of the utility model.

[0017] 101-water inlet pipe, 102-water outlet pipe, 103-waste heat treatment component, 104-mounting frame, 105-inlet pipe, 106-steel pipe, 107-filter pipe, 108-outlet pipe, 109-threaded pipe, 110-housing, 111-insulation layer, 112-control valve, 113-water tank, 114-water pump, 115-temperature sensor, 116-water temperature sensor, 201-bellows, 202-mounting plate, 203-fixing bolts. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] First embodiment

[0020] See also Figure 1-2 , Figure 1 It is a structural diagram of a flue gas waste heat recovery device according to the first embodiment of the utility model. Figure 2 It is a partial structural schematic diagram of a flue gas waste heat recovery device according to the first embodiment of the utility model.

[0021] The utility model provides a flue gas waste heat recovery device: including a water inlet pipe 101, a water outlet pipe 102 and a waste heat treatment component 103, wherein the waste heat treatment component 103 includes a mounting frame 104, an air inlet pipe 105, a plurality of steel pipes 106, a filter pipe 107, an air outlet pipe 108, a plurality of threaded pipes 109, a shell 110, a heat insulation layer 111, a control valve 112, a water tank 113, a water pump 114, a temperature sensor 115 and a water temperature sensor 116. The above scheme solves the problem that the flue gas of the existing device enters the inner tank and then passes through the waste heat recovery device in the inner tank, absorbs heat to heat water and utilizes waste heat, and long-term use easily causes the chemical substances in the smoke to adhere to the recovery device and corrode the recovery device. It can be understood that the above scheme can be used in hot water use scenarios, and can also be used to control the water output of the water inlet pipe 101 through the control valve 112, the water tank 113 stores hot water, and the water pump 114 takes out the water in the water tank 113.

[0022] In this embodiment, the water inlet pipe 101 is used for water to enter the threaded pipe 109 , and the water outlet pipe 102 is used for water to exit the threaded pipe 109 .

[0023] Among them, several of the threaded pipes 109 are connected to the water inlet pipe 101 and are located on one side of the water inlet pipe 101, the water outlet pipe 102 is connected to the threaded pipe 109 and is located on the side of the threaded pipe 109 away from the water inlet pipe 101, the steel pipe 106 is fixedly connected to the threaded pipe 109 and is located on one side of the threaded pipe 109, the air inlet pipe 105 is connected to the steel pipe 106 and is located on one side of the steel pipe 106, the air outlet pipe 108 is connected to the steel pipe 106 and is located on the top of the steel pipe 106, the filter pipe 107 is slidably connected to the steel pipe 106 and is located on the inner side of the steel pipe 106, the mounting frame 104 is fixedly connected to several of the steel pipes 106 and is located on the steel pipe 106. On the outside of the tube 106, water enters the threaded tube 109, and the threaded tube 109 is wound around the outer wall of the steel tube 106. The air inlet pipe 105 discharges the smoke into the steel tube 106. The threaded tube 109 on the outside absorbs water and uses the heat to heat the water, and then discharges the hot water for use. After the smoke enters the steel tube 106, it passes through the filter tube 107 to adsorb the dust in the smoke. After a certain period of use, the filter tube 107 is replaced or removed for cleaning. The mounting frame 104 is used to install and support the steel tube 106, which solves the problem that the smoke in the existing device enters the inner tank and then passes through the waste heat recovery device in the inner tank to absorb heat and heat water to use the waste heat. Long-term use easily causes the chemical substances in the smoke to adhere to the recovery device and corrode the recovery device.

[0024] Secondly, the outer shell 110 is fixedly connected to the mounting frame 104 and is located on the outside of the mounting frame 104. The thermal insulation layer 111 is fixedly connected to the outer shell 110 and is located inside the outer shell 110. The outer shell 110 is used to protect the device and enhance thermal insulation. The thermal insulation performance of the device is further enhanced by providing the thermal insulation layer.

[0025] Again, the control valve 112 is arranged on the water inlet pipe 101, the water tank 113 is connected to the water outlet pipe 102 and is located on one side of the water outlet pipe 102, the water pump 114 is connected to the water tank 113 and is located on one side of the water tank 113, the control valve 112 is used to control the water output of the water inlet pipe 101, the water tank 113 is used to store hot water, and the water pump 114 is used to take out water from the water tank 113.

[0026] Finally, the temperature sensor 115 is connected to the outer shell 110 and is located on the inner side of the outer shell 110 , and the water temperature sensor 116 is connected to the water tank 113 and is located on one side of the water tank 113 . The temperature inside the outer shell 110 is observed through the temperature sensor 115 , and the water temperature sensor 116 is used to observe the water temperature in the water tank 113 .

[0027] When using a flue gas waste heat recovery device of the utility model, the water inlet pipe 101 is used for water intake of the threaded pipe 109, and the water outlet pipe 102 is used for water discharge of the threaded pipe 109. Water enters the threaded pipe 109, and the threaded pipe 109 is wound around the outer wall of the steel pipe 106. The air inlet pipe 105 discharges the flue gas into the steel pipe 106, and the threaded pipe 109 on the outside absorbs water to heat water, and then discharges the hot water for use. After the flue gas enters the steel pipe 106, it passes through the filter tube 107 to absorb dust in the flue gas. After a certain period of use, the filter tube 107 is replaced or removed for cleaning. The mounting frame 104 is used to install and support the steel pipe 106, which solves the problem that the flue gas of the existing device enters the inner tank and then passes through the waste heat recovery device in the inner tank to absorb heat to heat water for waste heat. Long-term use easily causes chemical substances in the flue gas to adhere to the recovery device and corrode the recovery device.

[0028] Second embodiment

[0029] See also Figure 3 , Figure 3 It is a cross-sectional schematic diagram of a flue gas waste heat recovery device of the second embodiment of the utility model. Based on the first embodiment, the waste heat treatment component 103 of a flue gas waste heat recovery device of the utility model further includes a bellows 201, a mounting plate 202 and fixing bolts 203.

[0030] The bellows 201 is connected to the air outlet pipe 108 and is located on one side of the pipe. The mounting plate 202 is arranged on the bellows 201. The fixing bolts 203 are threadedly connected to the mounting plate 202 and are located on one side of the mounting plate 202. The bellows 201 is convenient for telescopically changing the angle. By installing the bellows 201, the gas can be conveniently discharged to the outdoors. The mounting plate 202 is used to provide an installation position, and the bellows 201 is fixed to a wall or a roof by the fixing bolts 203.

[0031] The above disclosure is only a preferred embodiment of a flue gas waste heat recovery device of the present utility model, and it certainly cannot be used to limit the scope of rights of the present utility model. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A flue gas waste heat recovery device, comprising a water inlet pipe and a water outlet pipe, characterized in that: It also includes a waste heat treatment assembly, which includes a mounting frame, an air inlet pipe, a plurality of steel pipes, a filter pipe, an air outlet pipe and a plurality of threaded pipes; The plurality of threaded pipes are connected to the water inlet pipe and are located on one side of the water inlet pipe, the water outlet pipe is connected to the threaded pipe and is located on a side of the threaded pipe away from the water inlet pipe, the steel pipe is fixedly connected to the threaded pipe and is located on one side of the threaded pipe, the air inlet pipe is connected to the steel pipe and is located on one side of the steel pipe, the air outlet pipe is connected to the steel pipe and is located on the top of the steel pipe, the filter pipe is slidably connected to the steel pipe and is located on the inner side of the steel pipe, and the mounting frame is fixedly connected to the plurality of steel pipes and is located on the outer side of the steel pipe.

2. A flue gas waste heat recovery device according to claim 1, characterized in that: The waste heat treatment component also includes an outer shell and an insulation layer. The outer shell is fixedly connected to the mounting frame and is located outside the mounting frame. The insulation layer is fixedly connected to the outer shell and is located inside the outer shell.

3. A flue gas waste heat recovery device as claimed in claim 2, characterized in that: The waste heat treatment component also includes a control valve, a water tank and a water pump. The control valve is arranged on the water inlet pipe. The water tank is connected to the water outlet pipe and is located on one side of the water outlet pipe. The water pump is connected to the water tank and is located on one side of the water tank.

4. A flue gas waste heat recovery device as claimed in claim 3, characterized in that: The waste heat treatment component also includes a temperature sensor and a water temperature sensor. The temperature sensor is connected to the shell and is located on the inner side of the shell. The water temperature sensor is connected to the water tank and is located on one side of the water tank.

5. A flue gas waste heat recovery device as claimed in claim 4, characterized in that: The waste heat treatment component also includes a bellows, a mounting plate and a fixing bolt. The bellows is connected to the air outlet pipe and is located on one side of the pipe. The mounting plate is arranged on the bellows. The fixing bolt is threadedly connected to the mounting plate and is located on one side of the mounting plate.

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