Waste heat recovery device of air temperature type gasifier

Abstract

The utility model discloses a waste heat recovery device of an air temperature type vaporizer, which belongs to the field of waste heat recovery of the air temperature type vaporizer, and comprises the air temperature type vaporizer, a multi-pipeline heat exchanger, an ethylene glycol storage box and an electric control cabinet, an ethylene glycol storage box water outlet pipe and an ethylene glycol storage box water inlet pipe are connected between the ethylene glycol storage box and the multi-pipeline heat exchanger, the ethylene glycol storage box water outlet pipe is located on the lower side of the ethylene glycol storage box water inlet pipe, an aluminum pipe and fins are arranged on the air temperature type vaporizer, and the air temperature type vaporizer is connected with the ethylene glycol storage box through the aluminum pipe and the fins; the other side of the multi-pipeline heat exchanger is connected with a multi-pipeline heat exchanger water outlet pipe, a multi-pipeline heat exchanger water inlet pipe, a multi-pipeline heat exchanger air outlet pipe and a multi-pipeline heat exchanger air inlet pipe, and effective utilization of low-temperature waste heat is achieved by recycling cold energy released by the air temperature type gasifier in the gasification process.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery from ambient air vaporizers, and more specifically, to a waste heat recovery device for ambient air vaporizers. Background Technology

[0002] With the continuous growth of global energy demand and increasing awareness of environmental protection, energy conservation and emission reduction have become a common focus of attention for countries around the world. In particular, in industrial production and civil facilities, how to use energy efficiently and reduce energy consumption and greenhouse gas emissions is the key to promoting sustainable development and achieving green transformation. As a device widely used for the vaporization of cryogenic liquids such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG), ambient air vaporizers work by using ambient air as a heat source and exchanging heat with cryogenic liquids through a finned tube structure to achieve the vaporization process. Although this process does not require additional fuel consumption, in actual operation, a large amount of cold energy is directly released into the atmosphere, resulting in a great waste of energy.

[0003] Meanwhile, the widespread use of air conditioning systems in summer has greatly improved the quality of people's living and working environment, but it also brings huge electricity consumption. Especially during the high-temperature season, the electricity load of air conditioning often accounts for a considerable proportion of the city's total electricity consumption, which exacerbates the pressure on the power grid and leads to an increase in carbon emissions. In winter, although the main demand shifts to heating, air conditioning systems still need to operate in some places with mild climates or where year-round temperature control is required, which also faces challenges in energy efficiency and environmental protection.

[0004] To address the aforementioned issues, developing a system that can effectively recover and utilize the cold energy generated during the operation of an ambient air vaporizer, while also being flexibly applicable for summer cooling, winter auxiliary heating, or year-round temperature control, is of great significance for improving energy efficiency and reducing carbon emissions. Traditional waste heat recovery technologies mostly focus on the recovery of high-temperature industrial waste heat, with limited research on the recovery and utilization of low-temperature waste heat, especially the cold energy generated by ambient air vaporizers. Furthermore, existing technologies often struggle to achieve efficient energy conversion and utilization across different seasons and application scenarios. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a waste heat recovery device for an ambient air vaporizer, which can realize the effective utilization of low-temperature waste heat by recovering the cold energy released by the ambient air vaporizer during the vaporization process.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] An ambient air vaporizer waste heat recovery device includes an ambient air vaporizer, a multi-pipe heat exchanger, an ethylene glycol storage tank, and an electrical control cabinet. The ethylene glycol storage tank is placed on the upper part of the ambient air vaporizer support base. An ethylene glycol storage tank outlet pipe and an ethylene glycol storage tank inlet pipe are connected between the ethylene glycol storage tank and the multi-pipe heat exchanger. The ethylene glycol storage tank outlet pipe is located below the ethylene glycol storage tank inlet pipe. The ambient air vaporizer is equipped with aluminum tubes and fins, and is connected to the ethylene glycol storage tank via the aluminum tubes and fins. The other side of the multi-pipe heat exchanger is connected to a multi-pipe heat exchanger outlet pipe, a multi-pipe heat exchanger inlet pipe, a multi-pipe heat exchanger air outlet pipe, and a multi-pipe heat exchanger air inlet pipe. This device can recover the cold energy released during the vaporization process of the ambient air vaporizer, achieving effective utilization of low-temperature waste heat.

[0008] As a further improvement of this utility model, a first water pump is provided at the outer end of the water outlet pipe of the ethylene glycol storage tank.

[0009] As a further improvement of this utility model, temperature sensors are installed on the water outlet pipe of the ethylene glycol storage tank, the water inlet pipe of the ethylene glycol storage tank, the water outlet pipe of the multi-pipe heat exchanger, the water inlet pipe of the multi-pipe heat exchanger, the air outlet pipe of the multi-pipe heat exchanger, and the air inlet pipe of the multi-pipe heat exchanger.

[0010] As a further improvement of this utility model, flow sensors are installed on both the inlet pipe of the ethylene glycol storage tank and the outlet pipe of the multi-pipe heat exchanger.

[0011] As a further improvement of this utility model, a second water pump is installed on the inlet pipe of the multi-pipe heat exchanger.

[0012] As a further improvement of this utility model, a fan is provided inside the air inlet pipe of the multi-pipe heat exchanger.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] 1. This device effectively utilizes low-temperature waste heat by recovering the cold energy released during the vaporization process of the ambient air vaporizer. In summer, this cold energy is converted into a cold source for the air conditioning system, significantly reducing reliance on traditional electric air conditioners, thereby reducing electricity consumption and carbon emissions. In winter, although the main function focuses on cold energy recovery, by optimizing the system design, it can indirectly promote the efficiency improvement of the overall energy system, reduce the consumption of traditional energy, and achieve the goal of energy conservation and emission reduction throughout the year.

[0015] 2. The design of this device fully considers the climate characteristics and usage needs of different seasons. In summer, it can serve as an efficient air conditioning cold source to provide a comfortable indoor environment. In winter, although the opportunity to directly utilize cold energy is reduced, by adjusting the system operation mode, such as combining it with the building's heat recovery system, or using it as an auxiliary cooling method, energy utilization efficiency can still be improved to a certain extent. This flexibility allows the device to adapt to a variety of application scenarios, improving its economy and practicality.

[0016] 3. The device integrates multiple temperature and flow sensors, as well as a matching electrical control cabinet, enabling real-time monitoring and precise control of the system's operating status. This not only ensures the system's efficient and stable operation but also facilitates the timely detection and handling of potential problems, extending the equipment's service life. Furthermore, the intelligent management system can automatically adjust operating parameters according to changes in the external environment, further optimizing energy utilization efficiency, reducing manual maintenance costs, and improving the overall system's intelligence level. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Explanation of the labels in the diagram:

[0019] 1. Ethylene glycol storage tank outlet pipe; 2. Ethylene glycol storage tank inlet pipe; 3. Multi-pipe heat exchanger outlet pipe; 4. Multi-pipe heat exchanger inlet pipe; 5. Multi-pipe heat exchanger air outlet pipe; 6. Multi-pipe heat exchanger air inlet pipe; 7. Ambient air vaporizer; 8. Aluminum tube; 9. Fins; 10. Ethylene glycol storage tank; 11. First water pump; 12. Multi-pipe heat exchanger; 13. Fan; 14. Second water pump; 15. Flow sensor; 16. Temperature sensor; 17. Electrical control cabinet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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 of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0023] Please see Figure 1 An ambient air vaporizer waste heat recovery device includes an ambient air vaporizer 7, a multi-pipe heat exchanger 12, an ethylene glycol storage tank 10, and an electrical control cabinet 17. The ethylene glycol storage tank 10 is placed on the upper part of the support base of the ambient air vaporizer 7. An ethylene glycol storage tank outlet pipe 1 and an ethylene glycol storage tank inlet pipe 2 are connected between the ethylene glycol storage tank 10 and the multi-pipe heat exchanger 12. The ethylene glycol storage tank outlet pipe 1 is located below the ethylene glycol storage tank inlet pipe 2. The ambient air vaporizer 7 is equipped with aluminum tubes 8 and fins 9. The ambient air vaporizer 7 is connected to the ethylene glycol storage tank 10 through the aluminum tubes 8 and fins 9. The other side of the multi-pipe heat exchanger 12 is respectively connected to a multi-pipe heat exchanger outlet pipe 3, a multi-pipe heat exchanger inlet pipe 4, a multi-pipe heat exchanger air outlet pipe 5, and a multi-pipe heat exchanger air inlet pipe 6. This device can realize the effective utilization of low-temperature waste heat by recovering the cold energy released by the ambient air vaporizer during the vaporization process.

[0024] Please see Figure 1 A first water pump 11 is installed at the outer end of the outlet pipe 1 of the ethylene glycol storage tank. Temperature sensors 16 are installed on the outlet pipe 1, the inlet pipe 2, the outlet pipe 3, the inlet pipe 4, the air outlet pipe 5, and the air inlet pipe 6 of the multi-pipe heat exchanger. Flow sensors 15 are installed on the inlet pipe 2 and the outlet pipe 3 of the multi-pipe heat exchanger. A second water pump 14 is installed on the inlet pipe 4 of the multi-pipe heat exchanger. A fan 13 is installed inside the air inlet pipe 6 of the multi-pipe heat exchanger.

[0025] Working principle: When using this device, technicians utilize the heat exchange between ethylene glycol and the fins 9 of the ambient temperature vaporizer 7 to cool the ethylene glycol. The cooled ethylene glycol is then pumped to the multi-pipe heat exchanger 12 by the first water pump 11. In summer, the cooled water is pumped to the multi-pipe heat exchanger 12 by the second water pump 14 from the outlet pipe 3 of the multi-pipe heat exchanger, thus cooling the water and using it as a cold source for air conditioning. In summer, this replaces electric air conditioning, saving electricity. In winter, the fan 13 of the outlet pipe 5 of the multi-pipe heat exchanger sends air to the multi-pipe heat exchanger 12 to exchange heat with the ethylene glycol, replacing electric air conditioning in summer and saving electricity, thereby achieving the effect of energy conservation and emission reduction.

[0026] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A waste heat recovery device for an ambient air vaporizer, comprising an ambient air vaporizer (7), a multi-pipe heat exchanger (12), an ethylene glycol storage tank (10), and an electrical control cabinet (17), characterized in that, The ethylene glycol storage tank (10) is placed on the upper part of the support base of the ambient air vaporizer (7). The ethylene glycol storage tank (10) and the multi-pipe heat exchanger (12) are connected by an ethylene glycol storage tank outlet pipe (1) and an ethylene glycol storage tank inlet pipe (2). The ethylene glycol storage tank outlet pipe (1) is located below the ethylene glycol storage tank inlet pipe (2). The ambient air vaporizer (7) is provided with aluminum tubes (8) and fins (9). The ambient air vaporizer (7) is connected to the ethylene glycol storage tank (10) through aluminum tubes (8) and fins (9). The other side of the multi-pipe heat exchanger (12) is connected to a multi-pipe heat exchanger outlet pipe (3), a multi-pipe heat exchanger inlet pipe (4), a multi-pipe heat exchanger air outlet pipe (5), and a multi-pipe heat exchanger air inlet pipe (6).

2. The waste heat recovery device for an ambient air vaporizer according to claim 1, characterized in that, The outer end of the water outlet pipe (1) of the ethylene glycol storage tank is equipped with a first water pump (11).

3. The waste heat recovery device for an ambient air vaporizer according to claim 1, characterized in that, Temperature sensors (16) are installed on the ethylene glycol storage tank outlet pipe (1), ethylene glycol storage tank inlet pipe (2), multi-pipe heat exchanger outlet pipe (3), multi-pipe heat exchanger inlet pipe (4), multi-pipe heat exchanger air outlet pipe (5) and multi-pipe heat exchanger air inlet pipe (6).

4. The waste heat recovery device for an ambient air vaporizer according to claim 1, characterized in that, Flow sensors (15) are installed on the inlet pipe (2) of the ethylene glycol storage tank and the outlet pipe (3) of the multi-pipe heat exchanger.

5. The waste heat recovery device for an ambient air vaporizer according to claim 1, characterized in that, A second water pump (14) is installed on the inlet pipe (4) of the multi-pipe heat exchanger.

6. The waste heat recovery device for an ambient air vaporizer according to claim 1, characterized in that, A fan (13) is installed inside the air inlet pipe (6) of the multi-pipe heat exchanger.

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