Flue gas waste heat recovery device

Abstract

The utility model relates to the technical field of heat exchange, in particular to a flue gas waste heat recovery device which comprises a shell and a heat exchange assembly, the heat exchange assembly comprises a connecting column, a container body, a heat conduction rod, a heat conduction plate, a heat transfer component and a monitoring component, the connecting column is fixedly connected with the shell and located on the inner wall of the shell, and the container body is fixedly connected with the connecting column and located in the shell. The heat conduction rod penetrates through the liner body and is fixedly connected with the liner body, the heat conduction plate is fixedly connected with the heat conduction rod and is located in the liner body, the heat transfer component is installed on the heat conduction rod and is located between the liner body and the shell, and the monitoring component is installed on the shell. And a large amount of waste heat is not effectively utilized and is directly discharged, so that the problem of energy waste is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange technical field especially relates to a flue gas waste heat recovery device. BACKGROUND

[0002] In the coal-fired power plant boiler, a large amount of high-temperature flue gas will be produced. These high-temperature flue gas usually contains a large amount of heat energy, if directly discharged into the atmosphere, not only will cause huge waste of energy, but also will cause thermal pollution to the environment, aggravate greenhouse effect. In order to reduce the waste of energy, the flue gas will generally pass through the flue gas recovery device before being discharged into the atmosphere, and the energy is recycled and utilized, the existing flue gas waste heat recovery device heats the water in the inner barrel by the interlayer between the outer barrel and the inner barrel, because the ambient temperature is low, when the flue gas passes through the interlayer, part of the waste heat will be exchanged with the outside at the outer shell and lost, and when the flue gas passes through the waste heat recovery device at a faster speed, a large amount of waste heat will be discharged with the flue gas, causing the waste heat of the flue gas cannot be effectively recovered and the water cannot be fully heated.

[0003] The prior art CN212430919U discloses a flue gas waste heat recovery device, which comprises an inner barrel, an inlet pipe and an outlet pipe are fixedly connected to the inner barrel, and the inner barrel is provided with a waste heat recovery device which can effectively improve the flue gas waste heat recovery rate and make the remaining waste heat in the flue gas after waste heat recovery be further utilized. The 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 make the remaining heat in the flue gas after waste heat recovery be further utilized, so as to achieve the purpose of more efficient recovery of flue gas waste heat.

[0004] For the above-mentioned flue gas waste heat recovery device, due to the limited heat exchange area of the inner barrel, the heat in the flue gas cannot be fully absorbed, so that a large amount of waste heat is not effectively utilized and is directly discharged, causing energy waste. UTILITY MODEL CONTENTS

[0005] The utility model discloses a flue gas waste heat recovery device, solve the problem that the heat exchange area of the inner barrel is limited, the heat in the flue gas cannot be fully absorbed, so that a large amount of waste heat is not effectively utilized and is directly discharged, causing energy waste.

[0006] In order to achieve the above object, the utility model provides a kind of flue gas waste heat recovery device, including shell and heat exchange component, the heat exchange component includes connecting column, gall bladder, heat conduction stick, heat conduction plate, heat transfer component and monitoring component, the connecting column is fixedly connected with the shell, and located in the inner wall of the shell, the gall bladder is fixedly connected with the connecting column, and located in the shell, the heat conduction stick is through the gall bladder, and is fixedly connected with the gall bladder, the heat conduction plate is fixedly connected with the heat conduction stick, and located in the gall bladder, the heat transfer component is installed on the heat conduction stick, and located between the gall bladder and the shell, the monitoring component is installed on the shell.

[0007] Among them, the heat transfer component includes arc plate and heat conduction sheet, the arc plate is fixedly connected with the heat conduction stick, and located at the end of the heat conduction stick away from the heat conduction plate;The heat conduction sheet is fixedly installed on the arc plate.

[0008] Among them, the monitoring component includes thermometer and pressure gauge, the thermometer is fixedly connected with the shell, and located at the lateral side of the shell;The pressure gauge is fixedly connected with the shell, and located at the lateral side of the shell.

[0009] Among them, the heat exchange component further includes inlet pipe and outlet pipe, the inlet pipe is arranged at the bottom lateral side of the shell;The outlet pipe is arranged at the top lateral side of the shell.

[0010] Among them, the heat exchange component further includes insulation layer, the insulation layer is arranged on the shell, and is wrapped in the outside of the shell.

[0011] The utility model discloses a kind of flue gas waste heat recovery device, including shell and heat exchange component, the heat exchange component includes connecting column, gall bladder, heat conduction stick, heat conduction plate, heat transfer component and monitoring component, the connecting column is fixedly connected with the shell, and located in the inner wall of the shell, the gall bladder is fixedly connected with the connecting column, and located in the shell, the heat conduction stick is through the gall bladder, and is fixedly connected with the gall bladder, the heat conduction plate is fixedly connected with the heat conduction stick, and located in the gall bladder, the heat transfer component is installed on the heat conduction stick, and located between the gall bladder and the shell, the monitoring component is installed on the shell, solve the problem that due to the heat exchange area of inner gall bladder is limited, leading to unable to absorb the heat in flue gas fully, make a lot of waste heat is not effectively utilized and directly discharge, cause energy waste. ACCURACY OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiment of the present application or prior art, the following will briefly introduce the drawing needed to be used in embodiment or prior art description.

[0013] Figure 1This is a schematic diagram of the overall structure of the flue gas waste heat recovery device of this utility model.

[0014] Figure 2 This is a schematic diagram of the heat transfer component of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the heat-conducting plate of this utility model.

[0016] Figure 4 This is a schematic diagram of the arc-shaped plate and heat-conducting sheet of this utility model.

[0017] In the diagram: 101-shell, 102-smoke inlet, 103-smoke outlet, 104-connecting column, 105-tank, 106-heat-conducting rod, 107-heat-conducting plate, 108-arc plate, 109-heat-conducting sheet, 110-thermal gauge, 111-pressure gauge, 112-water inlet pipe, 113-water outlet pipe, 114-insulation layer, 115-ventilation groove. Detailed Implementation

[0018] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0019] The embodiment of this application is as follows:

[0020] Please see Figures 1-4 , Figure 1 This is a schematic diagram of the overall structure of the flue gas waste heat recovery device of this utility model. Figure 2 This is a structural schematic diagram of the heat transfer component of this utility model. Figure 3 This is a schematic diagram of the structure of the heat-conducting plate 107 of this utility model. Figure 4 This is a schematic diagram of the structure of the arc plate 108 and the heat-conducting sheet 109 of this utility model.

[0021] This utility model discloses a flue gas waste heat recovery device, comprising a shell 101, a flue gas inlet 102, a flue gas outlet 103, a connecting column 104, a tank body 105, a heat-conducting rod 106, a heat-conducting plate 107, an arc-shaped plate 108, a heat-conducting sheet 109, a thermometer 110, a pressure gauge 111, a water inlet pipe 112, a water outlet pipe 113, an insulation layer 114, and a ventilation groove 115. It solves the problem that the limited heat exchange area of ​​the inner tank prevents the full absorption of heat from the flue gas, resulting in a large amount of waste heat being directly emitted without effective utilization, causing energy waste. It is understood that the aforementioned solution can also be used to improve recovery efficiency.

[0022] In this embodiment, the shell 101 is a hollow cylinder with a smoke inlet 102 and a smoke outlet 103 at the top and bottom ends, respectively. The heat exchange assembly is installed on the shell 101, thereby solving the problem that the heat exchange area of ​​the inner liner is limited, which makes it impossible to fully absorb the heat in the flue gas, resulting in a large amount of waste heat being directly emitted without being effectively utilized, causing energy waste.

[0023] The connecting post 104 is fixedly connected to the housing 101 and located on the inner wall of the housing 101. The bladder body 105 is fixedly connected to the connecting post 104 and located inside the housing 101. The heat-conducting rod 106 penetrates the bladder body 105 and is fixedly connected to it. The heat-conducting plate 107 is fixedly connected to the heat-conducting rod 106 and located inside the bladder body 105. The heat transfer component is mounted on the heat-conducting rod 106 and located between the bladder body 105 and the housing 101. The monitoring component is mounted on the housing 101. The connecting post 104 is fixedly connected to the inner wall of the housing 101. Multiple connecting posts 104 are installed on the inner wall of the housing 101. The inner tube 105 is also a hollow cylinder made of copper. The outer wall of the inner tube 105 is connected to multiple connecting posts 104 to fix it inside the housing 101. The upper and lower ends of the inner tube 105 are respectively connected to the upper and lower smoke inlets 102 and smoke outlets 103 of the housing 101. The smoke can enter the inner tube 105 through the smoke inlet 102 at the bottom of the housing 101 and then be discharged through the smoke outlet 103 at the top. The cavity formed between the inner tube 105 and the housing 101 can be used for... For water storage, water is heated between the tank body 105 and the shell 101. Multiple heat-conducting rods 106, all made of copper, are arranged in four groups, staggered along the length of the tank body 105. A circular heat-conducting plate 107, also made of copper, has fan-shaped ventilation slots 115. Four heat-conducting plates 107 are connected to the four groups of heat-conducting rods 106, and their ventilation slots 115 are staggered to allow flue gas to circulate within the tank body 105. The heat exchanger increases the residence time of the flue gas within the inner tank 105, thereby better transferring heat to the heat-conducting plate 107. The heat transfer component is located at the other end of the heat-conducting rod 106, which can quickly disperse heat and efficiently heat the water. The monitoring component is used to monitor the temperature and pressure of the water heating section. Through the heat exchange component, the heat exchange surface is increased, improving the heat utilization rate and heat exchange efficiency. This solves the problem that due to the limited heat exchange area of ​​the inner tank, the heat in the flue gas cannot be fully absorbed, resulting in a large amount of waste heat being directly emitted without effective utilization, causing energy waste.

[0024] Secondly, the arc-shaped plate 108 is fixedly connected to the heat-conducting rod 106 and is located at the end of the heat-conducting rod 106 away from the heat-conducting plate 107; the heat-conducting sheet 109 is fixedly installed on the arc-shaped plate 108. The arc-shaped plate 108 is an arc-shaped copper plate, and there are four of them, which are connected to the four sets of heat-conducting rods 106 respectively. The heat-conducting sheet 109 is made of copper, and there are several of them, which are evenly arranged on the arc-shaped plate 108. The heat-conducting sheet 109 can increase the contact connection with the water. Through the arc-shaped plate 108 and the heat-conducting sheet 109, heat is efficiently dispersed into the water, thereby improving the heating efficiency of the water.

[0025] Meanwhile, the thermometer 110 is fixedly connected to the housing 101 and located on the periphery of the housing 101; the pressure gauge 111 is fixedly connected to the housing 101 and located on the periphery of the housing 101. The thermometer 110 is equipped with a temperature sensor that extends into the cavity formed by the tank body 105 and the housing 101. The pressure gauge 111 is equipped with a pressure sensor that extends into the cavity formed by the tank body 105 and the housing 101. Through the thermometer 110 and the pressure gauge 111, the water temperature and the internal pressure of the cavity can be detected.

[0026] In addition, the water inlet pipe 112 is located on the bottom periphery of the housing 101; the water outlet pipe 113 is located on the top periphery of the housing 101. The water inlet pipe 112 is located on the bottom side of the housing 101 for water input, and the water outlet pipe 113 is located on the top side of the housing 101 for water output. Water input and output are realized through the water inlet pipe 112 and the water outlet pipe 113.

[0027] Finally, the insulation layer 114 is disposed on the shell 101 and wraps around the outside of the shell 101. The insulation material is rock wool, which is made from natural rocks and other raw materials and processed by high-temperature melting. It has good thermal insulation performance, low thermal conductivity, and can effectively reduce heat transfer. It has good chemical stability and is not easily corroded by most chemical substances. It has excellent fire resistance and is a non-combustible material. It is safe and reliable to use. By disposing of the insulation layer 114 on the outside of the shell 101, heat loss can be reduced.

[0028] In this embodiment, during use, water enters the cavity formed by the tank body 105 and the shell 101 through the water inlet pipe 112, while flue gas enters the tank body 105 through the flue gas inlet 102 at the bottom of the device. After entering the tank body 105, the flue gas flows around the heat-conducting plate 107. The heat-conducting plate 107 absorbs heat and its temperature rises. The heat is transferred to the arc-shaped plate 108 and the heat-conducting sheet 109 through the heat-conducting rod 106. Since the tank body 105 is made of copper, the water will be heated when it comes into contact with the outer wall of the tank body 105. Meanwhile, the water in contact with the heat-conducting plate 109 will also heat the water, thereby greatly increasing the heat exchange area. Throughout the process, the temperature gauge 110 and the pressure gauge 111 monitor the temperature and pressure inside the device in real time to ensure the safe and stable operation of the device. The insulation layer 114 wraps around the outside of the shell 101 to reduce the loss of heat from the inside of the device to the outside and improve the waste heat recovery efficiency. This solves the problem that due to the limited heat exchange area of ​​the inner liner, the heat in the flue gas cannot be fully absorbed, resulting in a large amount of waste heat being directly discharged without being effectively utilized, causing energy waste.

[0029] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A flue gas waste heat recovery device, comprising a housing, characterized in that, It also includes heat exchange components; The heat exchange assembly includes a connecting column, a tank, a heat-conducting rod, a heat-conducting plate, a heat transfer component, and a monitoring component. The connecting column is fixedly connected to the shell and located on the inner wall of the shell. The tank is fixedly connected to the connecting column and located inside the shell. The heat-conducting rod passes through the tank and is fixedly connected to the tank. The heat-conducting plate is fixedly connected to the heat-conducting rod and located inside the tank. The heat transfer component is mounted on the heat-conducting rod and located between the tank and the shell. The monitoring component is mounted on the shell.

2. The flue gas waste heat recovery device as described in claim 1, characterized in that, The heat transfer component includes an arc-shaped plate and a heat-conducting sheet. The arc-shaped plate is fixedly connected to the heat-conducting rod and is located at the end of the heat-conducting rod away from the heat-conducting plate. The heat-conducting sheet is fixedly mounted on the arc-shaped plate.

3. The flue gas waste heat recovery device as described in claim 1, characterized in that, The monitoring components include a thermometer and a pressure gauge. The thermometer is fixedly connected to the housing and located on the periphery of the housing. The pressure gauge is fixedly connected to the housing and located on the periphery of the housing.

4. The flue gas waste heat recovery device as described in claim 1, characterized in that, The heat exchange assembly also includes an inlet pipe and an outlet pipe, with the inlet pipe disposed on the bottom periphery of the housing and the outlet pipe disposed on the top periphery of the housing.

5. The flue gas waste heat recovery device as described in claim 1, characterized in that, The heat exchange assembly also includes an insulation layer, which is disposed on the housing and wraps around the outside of the housing.

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