Novel waste gas heat recovery device

Abstract

The utility model discloses a novel waste gas heat recovery device, and relates to the technical field of waste gas heat recovery. The device comprises a heating furnace body, a heat recovery assembly is arranged on the inner wall of the heating furnace body, a combustion bin is installed in the heating furnace body, a smoke exhaust pipe communicated with the combustion bin is installed at the top of the combustion bin, and a waste gas pipe communicated with the reaction tank and matched with the heat recovery assembly is installed at the top of the reaction tank. And a cleaning assembly matched with the heat recovery assembly is mounted on the outer side of the heating furnace body. The design of the spiral bin body is adopted for the heat recovery assembly, waste gas flows in the spiral bin body and makes full contact with cold water in the heat exchange bin, the heat exchange area is greatly increased, and compared with a traditional heat recovery device, contact of cold fluid and hot fluid is more sufficient, heat transfer is more thorough, and the heat recovery efficiency is improved. The cleaning assembly can clean the heat recovery assembly regularly, and the inner wall of the spiral bin body is scoured through high-pressure airflow generated by the air pump.

Description

Technical Field

[0001] This utility model relates to the field of waste gas heat recovery technology, and more specifically, to a novel waste gas heat recovery device. Background Technology

[0002] In industrial production, a large amount of high-temperature waste gas is emitted into the atmosphere. This waste gas carries a lot of heat energy, and direct emission not only causes a huge waste of energy, but may also cause thermal pollution to the environment.

[0003] Existing heat recovery devices have limited heat exchange area and unreasonable internal flow channel design, resulting in insufficient contact between hot and cold fluids and incomplete heat transfer. Furthermore, industrial waste gas often contains impurities such as dust and oil. During the heat exchange process, these impurities easily adhere to the surface of the heat exchange core, forming dirt and hindering heat transfer.

[0004] Therefore, we have made improvements to this and proposed a new type of waste gas heat recovery device. Utility Model Content

[0005] The purpose of this invention is to address the limitations of existing heat recovery devices, such as limited heat exchange area, unreasonable internal flow channel design, and insufficient contact between hot and cold fluids, which leads to incomplete heat transfer. Furthermore, industrial waste gas often contains impurities such as dust and oil, which easily adhere to the surface of the heat exchange core during heat exchange, forming dirt and hindering heat transfer.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A novel waste gas heat recovery device is proposed to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] The device includes a heating furnace body, an inner wall of which is provided with a heat recovery assembly, a combustion chamber installed inside the heating furnace body, a reaction vessel located inside the combustion chamber, an ignition unit installed at the bottom of the combustion chamber, a flue pipe connected to the top of the combustion chamber, an exhaust pipe connected to the top of the reaction vessel and cooperating with the heat recovery assembly, and a cleaning assembly cooperating with the heat recovery assembly installed on the outer side of the heating furnace body.

[0010] The heat recovery component employs a spiral chamber design, allowing exhaust gas to flow within the spiral chamber and fully contact the cold water in the heat exchange chamber, significantly increasing the heat exchange area. Compared to traditional heat recovery devices, the contact between hot and cold fluids is more thorough, resulting in more complete heat transfer. The cleaning component can periodically clean the heat recovery component by using a high-pressure airflow generated by an air pump to flush the inner wall of the spiral chamber, effectively removing adhering dust, oil, and other impurities and preventing the formation of dirt.

[0011] As a preferred embodiment of the novel waste gas heat recovery device provided by this utility model, the heat recovery component includes a heat recovery chamber installed on the inner wall of the heating furnace body, and a spiral chamber body is installed on the inner wall of the heat recovery chamber body, forming a heat exchange chamber between the spiral chamber body and the inner wall of the heat recovery chamber body.

[0012] In a preferred embodiment of the novel waste gas heat recovery device provided by this utility model, the top of the heat recovery chamber is provided with a water inlet pipe connected to the heat exchange chamber, and the bottom of the heat recovery chamber is provided with a water outlet pipe connected to the heat exchange chamber.

[0013] As a preferred embodiment of the novel waste gas heat recovery device provided by this utility model, the top of the heat recovery chamber is provided with an air inlet pipe that communicates with the top of the spiral chamber body.

[0014] In a preferred embodiment of the novel waste gas heat recovery device provided by this utility model, the inlet pipe is connected to the waste gas pipe, and the bottom of the heat recovery chamber is provided with an outlet pipe that is connected to the bottom end of the spiral chamber body. The outlet pipe is connected to the combustion chamber.

[0015] As a preferred embodiment of the novel waste gas heat recovery device provided by this utility model, the cleaning component includes a collection box installed on the outside of the heating furnace body, an air pump installed on the upper side of the collection box, an exhaust pipe connected to the air inlet pipe installed at the air outlet of the air pump, and a first valve installed between the exhaust pipe and the air inlet pipe.

[0016] In a preferred embodiment of the novel waste gas heat recovery device provided by this utility model, a gas supply pipe is installed on one side of the collection box and communicates with its interior. The gas supply pipe is connected to the gas outlet pipe, and a second valve is installed between the gas supply pipe and the gas outlet pipe.

[0017] In a preferred embodiment of the novel waste gas heat recovery device provided by this utility model, a waste box is slidably fitted on one side of the collection box, an exhaust port is opened on the top of the collection box, and a filter screen is installed on the top of the exhaust port.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: By adopting the spiral chamber design of the heat recovery component, the exhaust gas flows inside the spiral chamber and comes into full contact with the cold water in the heat exchange chamber, which greatly increases the heat exchange area. Compared with traditional heat recovery devices, the contact between hot and cold fluids is more complete and the heat transfer is more thorough. The cleaning component can clean the heat recovery component regularly. The high-pressure airflow generated by the air pump flushes the inner wall of the spiral chamber, effectively removing attached dust, oil and other impurities and preventing the formation of dirt. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the novel waste gas heat recovery device provided in this application;

[0020] Figure 2 A schematic side sectional view of the novel waste gas heat recovery device provided in this application;

[0021] Figure 3 This is a side sectional view of the heating furnace body provided in this application;

[0022] Figure 4 This is a schematic diagram of the cleaning component structure provided in this application.

[0023] The image shows:

[0024] 1. Heating furnace body; 2. Heat recovery assembly; 201. Heat recovery chamber; 202. Spiral chamber; 203. Heat exchange chamber; 204. Water inlet pipe; 205. Water outlet pipe; 206. Air inlet pipe; 207. Air outlet pipe; 3. Combustion chamber; 4. Reaction vessel; 5. Ignition unit; 6. Exhaust pipe; 7. Waste gas pipe; 8. Cleaning assembly; 801. Collection box; 802. Air pump; 803. Exhaust pipe; 804. First valve; 805. Gas supply pipe; 806. Second valve; 807. Waste box; 808. Exhaust port. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] Example 1

[0034] Please refer to Figure 1-4A novel waste gas heat recovery device includes: a heating furnace body 1; a heat recovery component 2 installed on the inner wall of the heating furnace body 1; a combustion chamber 3 installed inside the heating furnace body 1; a reaction tank 4 located inside the combustion chamber 3; an ignition unit 5 installed at the bottom of the combustion chamber 3; a flue pipe 6 connected to the top of the combustion chamber 3; a waste gas pipe 7 connected to and cooperating with the heat recovery component 2 installed at the top of the reaction tank 4; and a cleaning component 8 cooperating with the heat recovery component 2 installed on the outer side of the heating furnace body 1. The heat recovery component 2 includes a heat recovery chamber 201 installed on the inner wall of the heating furnace body 1; a spiral chamber 202 installed on the inner wall of the heat recovery chamber 201; and a heat exchange chamber 203 formed between the spiral chamber 202 and the inner wall of the heat recovery chamber 201. The heat recovery chamber 201 has a water inlet pipe 204 at its top, which is connected to the heat exchange chamber 203, and a water outlet pipe 205 at its bottom, which is also connected to the heat exchange chamber 203. The heat recovery chamber 201 also has an air inlet pipe 206 at its top, which is connected to the top of the spiral chamber 202. The air inlet pipe 206 is connected to the exhaust pipe 7, and the heat recovery chamber 201 has an air outlet pipe 207 at its bottom, which is connected to the bottom of the spiral chamber 202 and is connected to the combustion chamber 3.

[0035] Implementation process: When the heating furnace 1 is working, the high-temperature waste gas generated by the reaction tank 4 flows into the inlet pipe 206 through the waste gas pipe 7, and then enters the spiral chamber 202. At the same time, cold water enters the heat exchange chamber 203 from the water inlet pipe 204. Since the heat exchange chamber 203 is formed between the spiral chamber 202 and the inner wall of the heat recovery chamber 201, and the waste gas flows in the spiral chamber 202, the contact area and contact time between the waste gas and the cold water are increased. The heat of the high-temperature waste gas is transferred to the cold water through the wall of the spiral chamber 202, realizing heat recovery. After absorbing the heat, the temperature of the cold water rises and flows out from the water outlet pipe 205, which can be used for other processes that require heat energy. After heat exchange, the temperature of the waste gas decreases and flows out from the gas outlet pipe 207 at the bottom of the spiral chamber 202, and then re-enters the combustion chamber 3 for secondary combustion, improving the energy utilization rate.

[0036] Benefits of implementation: The heat recovery component 2 adopts the design of a spiral chamber 202, which allows the exhaust gas to flow inside the spiral chamber 202 and come into full contact with the cold water in the heat exchange chamber 203, greatly increasing the heat exchange area.

[0037] Example 2

[0038] The cleaning assembly 8 includes a collection box 801 installed on the outside of the heating furnace body 1. An air pump 802 is installed on the upper side of the collection box 801. An exhaust pipe 803 connected to an inlet pipe 206 is installed at the outlet of the air pump 802. A first valve 804 is installed between the exhaust pipe 803 and the inlet pipe 206. An air supply pipe 805 connected to the inside of the collection box 801 is installed on one side. The air supply pipe 805 is connected to an outlet pipe 207. A second valve 806 is installed between the air supply pipe 805 and the outlet pipe 207. A waste box 807 is slidably fitted on one side of the collection box 801. An exhaust port 808 is opened at the top of the collection box 801. A filter screen 809 is installed on the top of the exhaust port 808.

[0039] Implementation process: By turning on the cleaning component 8 and closing the first valve 804 and the second valve 806, the high-pressure airflow generated by the air pump 802 enters the air inlet pipe 206 through the exhaust pipe 803, and then enters the spiral chamber 202. The high-pressure airflow washes the inner wall of the spiral chamber 202, blowing off the attached impurities. The blown-off impurities flow out from the exhaust pipe 207 with the airflow and enter the collection box 801 through the air delivery pipe 805. As the space inside the collection box 801 increases, the airflow speed slows down, and the impurities settle into the waste box 807. The gas after impurity separation is discharged from the exhaust port 808. The filter screen 809 at the top of the exhaust port 808 can further filter the fine impurities in the gas and prevent them from entering the atmosphere. During the flow of exhaust gas, the spiral chamber 202 causes the exhaust gas to rotate, increasing the washing effect on the pipe wall and reducing the adhesion of impurities.

[0040] Benefits of implementation: The cleaning component 8 can clean the heat recovery component 2 periodically. The high-pressure airflow generated by the air pump 802 flushes the inner wall of the spiral chamber 202, effectively removing attached dust, oil and other impurities.

[0041] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A novel waste gas heat recovery device, characterized in that, include: A heating furnace body (1) is provided with a heat recovery component (2) on its inner wall. A combustion chamber (3) is installed inside the heating furnace body (1). A reaction tank (4) located inside the combustion chamber (3) is installed inside the heating furnace body (1). An ignition part (5) is installed at the bottom of the combustion chamber (3). A flue pipe (6) connected to the top of the combustion chamber (3) is installed thereon. A waste gas pipe (7) connected to the top of the reaction tank (4) and cooperating with the heat recovery component (2) is installed thereon. A cleaning component (8) cooperating with the heat recovery component (2) is installed on the outside of the heating furnace body (1).

2. The novel waste gas heat recovery device according to claim 1, characterized in that, The heat recovery assembly (2) includes a heat recovery chamber (201) installed on the inner wall of the heating furnace body (1). A spiral chamber (202) is installed on the inner wall of the heat recovery chamber (201), and a heat exchange chamber (203) is formed between the spiral chamber (202) and the inner wall of the heat recovery chamber (201).

3. The novel waste gas heat recovery device according to claim 2, characterized in that, The top of the heat recovery chamber (201) is provided with an inlet pipe (204) that is connected to the heat exchange chamber (203), and the bottom of the heat recovery chamber (201) is provided with an outlet pipe (205) that is connected to the heat exchange chamber (203).

4. The novel waste gas heat recovery device according to claim 3, characterized in that, The top of the heat recovery chamber (201) is provided with an air inlet pipe (206) that is connected to the top of the spiral chamber (202).

5. A novel waste gas heat recovery device according to claim 4, characterized in that, The air inlet pipe (206) is connected to the exhaust pipe (7), and the bottom of the heat recovery chamber (201) is provided with an air outlet pipe (207) connected to the bottom end of the spiral chamber (202). The air outlet pipe (207) is connected to the combustion chamber (3).

6. The novel waste gas heat recovery device according to claim 1, characterized in that, The cleaning assembly (8) includes a collection box (801) installed on the outside of the heating furnace body (1). An air pump (802) is installed on the upper side of the collection box (801). An exhaust pipe (803) connected to the air inlet pipe (206) is installed at the air outlet of the air pump (802). A first valve (804) is installed between the exhaust pipe (803) and the air inlet pipe (206).

7. A novel waste gas heat recovery device according to claim 6, characterized in that, A gas supply pipe (805) is installed on one side of the collection box (801) and communicates with its interior. The gas supply pipe (805) is connected to the gas outlet pipe (207). A second valve (806) is installed between the gas supply pipe (805) and the gas outlet pipe (207).

8. A novel waste gas heat recovery device according to claim 7, characterized in that, A waste box (807) is slidably fitted on one side of the collection box (801), and an exhaust port (808) is provided on the top of the collection box (801). A filter screen (809) is installed on the top of the exhaust port (808).

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