Waste gas waste heat recycling equipment

Abstract

The utility model discloses waste gas waste heat recycling equipment which comprises a cooling cavity, a waste gas inlet and a waste gas outlet are formed in the two ends of the cooling cavity respectively, a plurality of refrigeration pieces are fixedly arranged on the side faces of the periphery of the cooling cavity, the heat absorption faces of the refrigeration pieces stretch into the cooling cavity, and the heat dissipation faces of the refrigeration pieces stretch out of the cooling cavity. A wrapping shell is fixedly arranged outside the cooling cavity, a cavity is formed between the wrapping shell and the outer wall of the cooling cavity, the heat dissipation faces of the refrigeration pieces are all located in the cavity, the cavity is filled with heat exchange liquid, and the outer portion of the cavity is communicated with a circulation mechanism for promoting circulation of the heat exchange liquid. According to the utility model, efficient recycling of waste heat of waste gas is realized by combining the refrigeration sheet and the heat exchange liquid, the heat absorption surface of the refrigeration sheet can continuously absorb heat, and then the heat exchange liquid and the plate heat exchanger are utilized to exchange the heat, so that the heat in the waste gas is fully absorbed and utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of heat recovery devices, in particular to waste gas waste heat recovery and utilization equipment. Background Art

[0002] Waste gas heat recovery is the process of using the heat energy in high-temperature waste gas generated in industrial production, automobile exhaust, etc., and converting it into usable heat energy through technical means, aiming to improve energy efficiency and reduce energy waste. Traditional waste gas heat recovery devices usually use coils and cold water direct heat exchange to achieve heat recovery, but there are certain defects. When the water temperature gradually approaches the waste gas temperature, the heat exchange efficiency will drop sharply until effective heat exchange cannot be carried out, resulting in the inability to fully utilize the waste heat of the waste gas, affecting the overall recovery efficiency. Utility Model Content

[0003] In order to solve the above-mentioned problems, the utility model provides an exhaust gas waste heat recovery and utilization device.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a waste heat recovery and utilization device for exhaust gas, comprising a cooling chamber, an exhaust gas inlet and an exhaust gas outlet are respectively arranged at both ends of the cooling chamber, a plurality of cooling fins are fixedly arranged on the four sides of the cooling chamber, the heat absorbing surface of the cooling fins extends into the interior of the cooling chamber, and the heat dissipation surface of the cooling fins extends to the outside of the cooling chamber, a wrapping shell is fixedly arranged on the outside of the cooling chamber, a cavity is formed between the wrapping shell and the outer wall of the cooling chamber, and the heat dissipation surfaces of the cooling fins are all located in the cavity, the interior of the cavity is filled with a heat exchange liquid, and the outside of the cavity is connected to a circulation mechanism for promoting the circulation of the heat exchange liquid.

[0005] Furthermore, a liquid inlet and a liquid outlet are respectively provided at two ends of the cavity, and a circulation mechanism is connected with the liquid inlet and the liquid outlet.

[0006] Furthermore, the circulation mechanism includes a circulating liquid pump and a plate heat exchanger, the liquid outlet of the circulating liquid pump is connected to the liquid inlet, the liquid inlet of the circulating liquid pump is connected to the plate heat exchanger, and the other end of the plate heat exchanger is connected to the liquid outlet.

[0007] Furthermore, the heat exchange liquid includes water or oil.

[0008] Furthermore, a plurality of evenly distributed heat dissipating fins are fixedly disposed on the heat dissipation surface of the refrigeration plate.

[0009] Compared with the prior art, the utility model has the following advantages: by combining a refrigeration plate and a heat exchange liquid, efficient recovery and utilization of waste heat from exhaust gas is achieved; an independent cavity is formed between the cooling chamber and the encapsulating shell; a refrigeration plate and a heat exchange liquid are arranged inside the cavity; and the heat exchange liquid is caused to circulate through a circulation mechanism; the heat absorption surface of the refrigeration plate can continuously absorb heat; and then the heat is exchanged with the heat exchange liquid and the plate heat exchanger to ensure that the heat in the exhaust gas is fully absorbed and utilized. In addition, the heat dissipation surface of the refrigeration plate is fixed with heat dissipation fins, which increases the heat dissipation area and improves the heat exchange efficiency. Compared with the traditional waste heat recovery device for exhaust gas, this new design can effectively avoid the problems caused by the gradual decrease in heat exchange efficiency, ensure the full utilization of waste heat from exhaust gas, improve energy utilization efficiency, and reduce energy waste. Therefore, the device has the significant advantages of improving the efficiency of waste heat recovery from exhaust gas, saving energy and reducing emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a three-dimensional structure diagram of a waste heat recovery and utilization device of the utility model. Figure 1 .

[0011] Figure 2 This is a three-dimensional structure diagram of a waste heat recovery and utilization device of the utility model. Figure 2 .

[0012] Figure 3 This is a three-dimensional structure diagram of a waste heat recovery and utilization device of the utility model. Figure 3 .

[0013] Figure 4 The utility model is a schematic diagram of the main structure of an exhaust gas waste heat recovery and utilization device.

[0014] Figure 5 This is a schematic diagram of the cross-sectional structure of a waste heat recovery device of the utility model. Figure 1 .

[0015] Figure 6 This is a schematic diagram of the cross-sectional structure of a waste heat recovery device of the utility model. Figure 2 .

[0016] As shown in the figure: 1. Cooling chamber; 2. Exhaust gas inlet; 3. Exhaust gas outlet; 4. Refrigeration plate; 5. Wrapping shell; 6. Cavity; 7. Liquid inlet; 8. Liquid outlet; 9. Liquid outlet; 10. Plate heat exchanger; 11. Heat dissipation fins. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "center", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction structure and operation. Therefore, they should not be understood as limitations on the present invention.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "provided with", "installed", "connected", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] Combined with Figure 1 To Attachment Figure 6 , an exhaust gas waste heat recovery and utilization device comprises a cooling chamber 1, wherein an exhaust gas inlet 2 and an exhaust gas outlet 3 are respectively arranged at both ends of the cooling chamber 1, a plurality of cooling fins 4 are fixedly arranged on the sides of the cooling chamber 1, a heat absorbing surface of the cooling fin 4 extends into the cooling chamber 1, and a heat dissipation surface of the cooling fin 4 extends to the outside of the cooling chamber 1, a plurality of uniformly distributed heat dissipation fins 11 are fixedly arranged on the heat dissipation surface of the cooling fin 4, a wrapping shell 5 is fixedly arranged on the outside of the cooling chamber 1, a cavity 6 is formed between the wrapping shell 5 and the outer wall of the cooling chamber 1, and the heat dissipation surfaces of the cooling fins 4 are all located in the cavity 6, a heat exchange liquid is filled inside the cavity 6, and the heat exchange liquid is oil, and a circulation mechanism for promoting the circulation of the heat exchange liquid is connected to the outside of the cavity 6.

[0021] In this embodiment, a liquid inlet 7 and a liquid outlet 8 are respectively provided at both ends of the cavity 6, and a circulation mechanism is connected to the liquid inlet 7 and the liquid outlet 8. The circulation mechanism includes a circulating liquid pump 9 and a plate heat exchanger 10, the liquid outlet end of the circulating liquid pump 9 is connected to the liquid inlet 7, the liquid inlet end of the circulating liquid pump 9 is connected to the plate heat exchanger 10, and the other end of the plate heat exchanger 10 is connected to the liquid outlet 8.

[0022] Specific implementation method of the utility model: Before using the utility model, first connect the external power supply, the working principle of the waste heat recovery and utilization equipment is as follows:

[0023] 1. Collection of waste heat from exhaust gas: Exhaust gas enters the cooling chamber 1 through the exhaust gas inlet 2. Refrigeration fins 4 are fixedly arranged around the cooling chamber 1. The heat absorbing surface of the refrigeration fins 4 extends into the interior of the cooling chamber 1 to absorb the heat in the exhaust gas.

[0024] 2. Heat dissipation and heat exchange: The heat dissipation surface of the cooling plate 4 extends to the outside of the cooling chamber 1, and the heat dissipation fins 11 are fixed on the heat dissipation surface to increase the heat dissipation area. At this time, the cavity 6 is filled with heat exchange liquid (oil), and the heat exchange liquid absorbs the heat transferred from the heat dissipation surface of the cooling plate.

[0025] 3. Heat exchange circulation: The circulation mechanism includes a circulating liquid pump 9 and a plate heat exchanger 10. The circulating liquid pump 9 draws the heat exchange liquid from the cavity 6 and performs heat exchange through the plate heat exchanger 10. At the same time, the liquid outlet of the circulating liquid pump 9 is connected to the liquid inlet 7 to realize the circulation of the heat exchange liquid.

[0026] 4. Efficient heat utilization: During the whole process, the refrigeration plate 4 continuously absorbs heat, the heat exchange liquid circulates continuously, and the heat is transferred and utilized through the plate heat exchanger 10. In this way, the heat in the exhaust gas can be fully absorbed and utilized, and the waste heat of the exhaust gas can be efficiently recovered and utilized.

[0027] Through the implementation of this equipment, the heat energy in the exhaust gas can be effectively recycled and utilized, avoiding the problem of reduced efficiency of traditional equipment when the water temperature is close to the exhaust gas temperature, improving energy utilization efficiency, reducing energy waste, and having the environmental protection effect of energy saving and emission reduction.

[0028] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An exhaust gas waste heat recovery and utilization device, comprising a cooling chamber (1), wherein the cooling chamber (1) is provided with an exhaust gas inlet (2) and an exhaust gas outlet (3) at both ends thereof, and wherein: A plurality of refrigeration fins (4) are fixedly arranged on the sides of the cooling chamber (1), the heat absorbing surfaces of the refrigeration fins (4) extend into the interior of the cooling chamber (1), and the heat dissipating surfaces of the refrigeration fins (4) extend out of the cooling chamber (1). A wrapping shell (5) is fixedly arranged outside the cooling chamber (1), a cavity (6) is formed between the wrapping shell (5) and the outer wall of the cooling chamber (1), and the heat dissipating surfaces of the refrigeration fins (4) are all located in the cavity (6), the interior of the cavity (6) is filled with a heat exchange liquid, and the outside of the cavity (6) is connected to a circulation mechanism for promoting the circulation of the heat exchange liquid.

2. The exhaust gas waste heat recovery and utilization equipment according to claim 1 is characterized in that: The two ends of the cavity (6) are respectively provided with a liquid inlet (7) and a liquid outlet (8), and the circulation mechanism is connected with the liquid inlet (7) and the liquid outlet (8).

3. The exhaust gas waste heat recovery and utilization equipment according to claim 2 is characterized in that: The circulation mechanism comprises a circulating liquid pump (9) and a plate heat exchanger (10); the liquid outlet end of the circulating liquid pump (9) is connected to the liquid inlet (7); the liquid inlet end of the circulating liquid pump (9) is connected to the plate heat exchanger (10); and the other end of the plate heat exchanger (10) is connected to the liquid outlet (8).

4. The exhaust gas waste heat recovery and utilization equipment according to claim 1 is characterized in that: The heat exchange liquid includes water or oil.

5. The exhaust gas waste heat recovery and utilization equipment according to claim 1 is characterized in that: A plurality of evenly distributed heat dissipation fins (11) are fixedly provided on the heat dissipation surface of the refrigeration plate (4).

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