A waste heat recovery type gas-water cooler

Abstract

The application relates to the technical field of waste heat recovery, in particular to a waste heat recovery type gas-water cooler which comprises a shell, the shell is horizontally arranged, the inner cavity of the shell is divided into a hot water cavity, a heat exchange cavity and a cooling water cavity by a water chamber partition plate, and the hot water cavity, the heat exchange cavity and the cooling water cavity are sequentially arranged along the length direction of the inner cavity of the shell; a gas inlet and a gas outlet are respectively arranged at the top of the heat exchange cavity, the gas inlet is used for receiving medium-low temperature gas, and the gas outlet is used for discharging low temperature gas after heat exchange; a hot water pipe bundle and a cooling water pipe bundle are respectively arranged in the heat exchange cavity, the hot water pipe bundle is communicated with the hot water cavity, and the cooling water pipe bundle is communicated with the cooling water cavity; the hot water pipe bundle is used for recovering gas waste heat, and the cooling water pipe bundle is used for cooling the gas temperature to a required temperature. The waste heat recovery type gas-water cooler provided by the application is convenient for improving the utilization rate of industrial exhaust waste heat.

Description

Technical Field

[0001] This application relates to the field of waste heat recovery technology, specifically to a waste heat recovery type gas-water cooler. Background Technology

[0002] In process industries, gas cooling is used in numerous applications, such as cooling the exhaust gas from various compressors. Currently, the mainstream approach is to use gas-water coolers, which use a large amount of circulating cooling water to cool the gas to the temperature required by the process. However, the exhaust waste heat resources in existing technologies are not recovered and utilized, resulting in a significant waste of energy. At the same time, the cooling process consumes a large amount of circulating cooling water, and the circulating cooling water system requires power and water replenishment, thus causing waste of both electricity and water resources.

[0003] In view of the shortcomings of existing processes, the purpose of this utility model is to provide a waste heat recovery type gas-water cooler to solve the problem that exhaust waste heat resources are not recovered and utilized in existing processes. Utility Model Content

[0004] In order to improve the utilization rate of industrial exhaust waste heat, this application provides a waste heat recovery type gas-water cooler.

[0005] The waste heat recovery type air-water cooler provided in this application adopts the following technical solution:

[0006] A waste heat recovery type gas-water cooler includes a shell, which is horizontally arranged. The inner cavity of the shell is divided into a hot water cavity, a heat exchange cavity, and a cooling water cavity by a water chamber partition. The hot water cavity, the heat exchange cavity, and the cooling water cavity are arranged sequentially along the length of the inner cavity of the shell. The top of the heat exchange cavity is provided with a gas inlet and a gas outlet, respectively. The gas inlet is used to receive medium and low temperature gas, and the gas outlet is used to discharge the low temperature gas after heat exchange.

[0007] The heat exchange chamber is equipped with a hot water tube bundle and a cooling water tube bundle, respectively. The hot water tube bundle is connected to the hot water chamber, and the cooling water tube bundle is connected to the cooling water chamber. The hot water tube bundle is used to recover waste heat from the gas, and the cooling water tube bundle is used to cool the gas temperature to the required temperature.

[0008] In one specific implementation scheme, a first end cap is provided on the end face of the hot water chamber away from the heat exchange chamber. The first end cap has a hot water inlet and a hot water outlet respectively. Both the hot water inlet and the hot water outlet are connected to the heat user terminal to form a heating cycle.

[0009] In one specific implementation scheme, a hot water baffle is horizontally arranged inside the hot water chamber, which divides the hot water chamber into a hot water inlet chamber and a hot water outlet chamber. The hot water inlet is connected to the hot water outlet chamber, and the hot water outlet is connected to the hot water inlet chamber. One end of the hot water pipe bundle is connected to the hot water inlet chamber, and the other end is connected to the hot water outlet chamber.

[0010] In one specific implementation scheme, a second end cap is provided on the end face of the hot water chamber away from the heat exchange chamber. The second end cap is provided with a cooling water inlet and a cooling water outlet. Both the cooling water inlet and the cooling water outlet are connected to the cooling tower to form a cooling cycle.

[0011] In one specific implementation scheme, a cooling water baffle is horizontally arranged inside the cooling water chamber, which divides the cooling water chamber into an upper cooling water chamber and a lower cooling water chamber. The cooling water inlet is connected to the lower cooling water chamber, and the cooling water outlet is connected to the upper cooling water chamber. One end of the cooling water pipe bundle is connected to the upper cooling water chamber, and the other end is connected to the lower cooling water chamber.

[0012] In one specific implementation, multiple airflow baffles are vertically arranged inside the heat exchange chamber, and the multiple airflow baffles are staggered. The hot water pipe bundle and the cooling water pipe bundle both pass through the airflow baffles.

[0013] In one specific implementation scheme, both the cooling water pipe bundle and the hot water pipe bundle are configured as U-shaped pipes, and the length ratio of the cooling water pipe bundle to the hot water pipe bundle is 1 to 0.1, and the quantity ratio of the cooling water pipe bundle to the hot water pipe bundle is 5 to 0.2.

[0014] In one specific implementation, the housing also includes supports, with multiple supports fixedly disposed at the bottom of the housing.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. The waste heat recovery type gas-water cooler is designed to introduce medium-low temperature gas (350~80℃) discharged from the compressor into the heat exchange chamber through the gas inlet. Under the action of the airflow baffle, the residence time of the high-temperature gas in the heat exchange chamber is extended, allowing the medium-low temperature gas to fully exchange heat with the hot water and cooling water. The hot water enters the hot water lower chamber through the hot water inlet and then enters the hot water tube bundle. The hot water in the hot water tube bundle absorbs heat from the medium-low temperature gas and then enters the hot water upper chamber, and is discharged through the hot water outlet. The heated hot water can be delivered to various end-user heat users, such as radiators and hot water type lithium bromide chiller units, to achieve comprehensive utilization of heat recovery and improve the utilization rate of waste heat from the gas. After being supplied to users, the hot water circulates back to the hot water lower chamber for continuous heat exchange. Meanwhile, cooling water enters the lower cooling water chamber through the cooling water inlet and then enters the cooling water pipe bundle. The cooling water in the cooling water pipe bundle absorbs heat from the medium- and low-temperature gas, causing the temperature of the medium- and low-temperature gas to drop to the temperature required by the process, transforming it into low-temperature gas. The low-temperature gas is discharged through the gas outlet. After the cooling water is heated, it enters the upper cooling water chamber and is discharged to the cooling tower through the cooling water outlet. After being cooled by the cooling tower, it is circulated back to the lower cooling water chamber to continuously cool the medium- and low-temperature gas, so that the low-temperature gas reaches the temperature required by the process. This makes it convenient to use as a gas source to drive industrial pneumatic equipment, further improving the comprehensive utilization of compressor exhaust. Attached Figure Description

[0017] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the overall structure of a waste heat recovery type air-water cooler according to an embodiment of this application.

[0019] Figure Descriptions: 1. Shell; 11. Water chamber baffle; 12. Hot water chamber; 121. Hot water baffle; 122. Upper hot water chamber; 123. Lower hot water chamber; 13. Heat exchange chamber; 131. Gas inlet; 132. Gas outlet; 133. Hot water tube bundle; 134. Cooling water tube bundle; 135. Airflow baffle; 14. Cooling water chamber; 141. Cooling water baffle; 142. Upper cooling water chamber; 143. Lower cooling water chamber; 15. First end cover; 151. Hot water inlet; 152. Hot water outlet; 16. Second end cover; 161. Cooling water inlet; 162. Cooling water outlet; 2. Support. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this application, unless otherwise stated, "multiple" means two or more.

[0022] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0023] This application discloses a waste heat recovery type air-water cooler.

[0024] Reference Figure 1A waste heat recovery type gas-water cooler includes a shell 1, which is horizontally arranged. The inner cavity of the shell 1 is divided into a hot water chamber 12, a heat exchange chamber 13, and a cooling water chamber 14 by a water chamber partition 11. The hot water chamber 12, the heat exchange chamber 13, and the cooling water chamber 14 are arranged sequentially along the length of the inner cavity of the shell 1. The top of the heat exchange chamber 13 is provided with a gas inlet 131 and a gas outlet 132. The gas inlet 131 is connected to a compressor, and the gas outlet 132 is connected to an industrial pneumatic device. The medium and low temperature gas discharged from the compressor enters the heat exchange chamber 13 through the gas inlet 131. After heat exchange, it forms low temperature gas and is discharged from the gas outlet 132 to the industrial pneumatic device to drive the industrial pneumatic device for production. The heat exchange chamber 13 is provided with a hot water tube bundle 133 and a cooling water tube bundle 134. The hot water tube bundle 133 is connected to the hot water chamber 12, and the cooling water tube bundle 134 is connected to the cooling water chamber 14. The hot water tube bundle 133 is used to recover the waste heat of the gas, and the cooling water tube bundle 134 is used to cool the gas temperature to the required temperature. A first end cap 15 is provided on the end face of the hot water chamber 12 away from the heat exchange chamber 13. The first end cap 15 has a hot water inlet 151 and a hot water outlet 152, both of which are connected to the heat user terminal to form a heating cycle. A hot water baffle 121 is horizontally arranged inside the hot water chamber 12, dividing it into a hot water upper chamber 122 and a hot water lower chamber 123. The hot water inlet 151 communicates with the hot water lower chamber 123, and the hot water outlet 152 communicates with the hot water upper chamber 122. One end of the hot water pipe bundle 133 is connected to the hot water upper chamber 122, and the other end is connected to the hot water lower chamber 123. A second end cap 16 is provided on the end face of the hot water chamber 12 away from the heat exchange chamber 13. The second end cap 16 has a cooling water inlet 161 and a cooling water outlet 162, both of which are connected to a cooling tower to form a cooling cycle. A cooling water baffle 141 is horizontally arranged inside the cooling water chamber 14, dividing the cooling water chamber 14 into an upper cooling water chamber 142 and a lower cooling water chamber 143. The cooling water inlet 161 is connected to the lower cooling water chamber 143, and the cooling water outlet 162 is connected to the upper cooling water chamber 142. One end of the cooling water tube bundle 134 is connected to the upper cooling water chamber 142, and the other end is connected to the lower cooling water chamber 143. Multiple airflow baffles 135 are vertically arranged inside the heat exchange chamber 13, and the multiple airflow baffles 135 are staggered. Both the hot water tube bundle 133 and the cooling water tube bundle 134 pass through the airflow baffles 135. Both the cooling water pipe bundle 134 and the hot water pipe bundle 133 are U-shaped pipes, and the length ratio of the cooling water pipe bundle 134 to the hot water pipe bundle 133 is 1~0.1, and the quantity ratio of the cooling water pipe bundle 134 to the hot water pipe bundle 133 is 5~0.2. This allows for precise adjustment of the temperature and flow rate of the hot water in the hot water pipe bundle 133 according to the actual heating needs of the end-user.

[0025] In particular, it also includes supports 2, with multiple supports 2 fixedly installed at the bottom of the housing 1 to ensure the stable placement of the waste heat recovery type air-water cooler.

[0026] The working principle of the waste heat recovery type gas-water cooler disclosed in this application is as follows: The gas discharged from the industrial compressor is a medium-low temperature gas with a temperature of 350~80℃. The medium-low temperature gas is introduced into the heat exchange chamber 13 through the gas inlet 131. Under the action of the airflow baffle 135, the residence time of the high temperature gas in the heat exchange chamber 13 is extended, so that the medium-low temperature gas can fully exchange heat with the hot water and cooling water. The hot water enters the hot water lower chamber 123 through the hot water inlet 151, and then enters the hot water tube bundle 133 through the hot water lower chamber 123. After absorbing the heat from the medium-low temperature gas, the hot water in the hot water tube bundle 133 enters the hot water upper chamber 122 and is discharged through the hot water outlet 152. The temperature of the heated hot water is 60~95℃, which can be continuously supplied to various end heat users, such as radiators, hot water type lithium bromide refrigeration units, etc., to realize the comprehensive utilization of heat recovery and improve the utilization rate of gas waste heat. After the hot water is supplied to the user end, it circulates back to the hot water lower chamber 123 for continuous heat exchange. Meanwhile, cooling water enters the lower cooling water chamber 143 through the cooling water inlet 161, and then enters the cooling water tube bundle 134 through the lower cooling water chamber 143. The cooling water in the cooling water tube bundle 134 absorbs heat from the medium and low temperature gas, causing the temperature of the medium and low temperature gas to drop to the temperature required by the process, transforming it into low temperature gas. The low temperature gas is discharged through the gas outlet 132. After the cooling water is heated, it enters the upper cooling water chamber 142 and is discharged to the cooling tower through the cooling water outlet 162. After being cooled by the cooling tower, it is circulated back to the lower cooling water chamber 143 to continuously cool the medium and low temperature gas, so that the low temperature gas reaches the temperature required by the process, making it convenient to use as a gas source to drive industrial pneumatic equipment, and further improving the comprehensive utilization of compressor exhaust.

[0027] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. This application is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of this application is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of this application should be considered to fall within the protection scope of this application.

Claims

1. A waste heat recovery type gas-water cooler, characterized in that, The device includes a shell (1) which is horizontally arranged. The inner cavity of the shell (1) is divided into a hot water chamber (12), a heat exchange chamber (13), and a cooling water chamber (14) by a water chamber partition (11). The hot water chamber (12), the heat exchange chamber (13), and the cooling water chamber (14) are arranged sequentially along the length of the inner cavity of the shell (1). The top of the heat exchange chamber (13) is provided with a gas inlet (131) and a gas outlet (132). The gas inlet (131) is used to receive medium and low temperature gas, and the gas outlet (132) is used to discharge the low temperature gas after heat exchange. The heat exchange chamber (13) is provided with a hot water tube bundle (133) and a cooling water tube bundle (134). The hot water tube bundle (133) is connected to the hot water chamber (12), and the cooling water tube bundle (134) is connected to the cooling water chamber (14). The hot water tube bundle (133) is used to recover the waste heat of the gas, and the cooling water tube bundle (134) is used to cool the gas temperature to the required temperature.

2. The air-water cooler according to claim 1, characterized in that, The hot water chamber (12) is provided with a first end cap (15) on the end face away from the heat exchange chamber (13). The first end cap (15) is provided with a hot water inlet (151) and a hot water outlet (152). The hot water inlet (151) and the hot water outlet (152) are both connected to the heat user terminal to form a heating cycle.

3. The air-water cooler according to claim 2, characterized in that, A hot water baffle (121) is horizontally arranged inside the hot water chamber (12), which divides the hot water chamber (12) into a hot water inlet chamber (122) and a hot water outlet chamber (123). The hot water inlet (151) is connected to the hot water outlet chamber (123), and the hot water outlet (152) is connected to the hot water inlet chamber (122). One end of the hot water pipe bundle (133) is connected to the hot water inlet chamber (122), and the other end is connected to the hot water outlet chamber (123).

4. The air-water cooler according to claim 1, characterized in that, A second end cap (16) is provided on the end face of the hot water chamber (12) away from the heat exchange chamber (13). The second end cap (16) is provided with a cooling water inlet (161) and a cooling water outlet (162). The cooling water inlet (161) and the cooling water outlet (162) are both connected to the cooling tower to form a cooling cycle.

5. The air-water cooler according to claim 4, characterized in that, A cooling water baffle (141) is horizontally arranged inside the cooling water chamber (14), which divides the cooling water chamber (14) into an upper cooling water chamber (142) and a lower cooling water chamber (143). The cooling water inlet (161) is connected to the lower cooling water chamber (143), and the cooling water outlet (162) is connected to the upper cooling water chamber (142). One end of the cooling water pipe bundle (134) is connected to the upper cooling water chamber (142), and the other end is connected to the lower cooling water chamber (143).

6. The air-water cooler according to claim 1, characterized in that, Multiple airflow baffles (135) are vertically arranged inside the heat exchange chamber (13), and the multiple airflow baffles (135) are staggered. The hot water pipe bundle (133) and the cooling water pipe bundle (134) both pass through the airflow baffles (135).

7. The air-water cooler according to claim 1, characterized in that, Both the cooling water pipe bundle (134) and the hot water pipe bundle (133) are configured as U-shaped pipes, and the length ratio of the cooling water pipe bundle (134) and the hot water pipe bundle (133) is 1 to 0.1, and the quantity ratio of the cooling water pipe bundle (134) and the hot water pipe bundle (133) is 5 to 0.

2.

8. The air-water cooler according to claim 1, characterized in that, It also includes supports (2), and multiple supports (2) are fixedly disposed at the bottom of the housing (1).

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