Circulating absorption water waste heat recovery device

Abstract

The utility model belongs to the technical field of waste heat recovery, and particularly relates to a circulating absorption water waste heat recovery device which comprises a base, and an exchange mechanism and a convection mechanism are respectively arranged above the base. The exchange mechanism comprises a first circulating pump, and the action that the first circulating pump extracts lean circulating water to exchange heat is achieved through the exchange mechanism; the convection mechanism comprises a convection fan, and the convection mechanism achieves the action that the convection fan conducts convection on the exchange mechanism. According to the circulating absorption water waste heat recovery device, heat conduction is conducted between rich circulating water and lean circulating water through direct contact of the surface of the cold exchange plate and the surface of the heat exchange plate, the convection fan circulates dissipated heat in the heat insulation shell, and the utilization efficiency of the heat is improved; the technical problems that an existing device only conducts heat exchange through heat radiation between rich circulating water and cold circulating water, and the temperature rising efficiency of the rich circulating water is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a circulating absorption water waste heat recovery device. Background Technique

[0002] The dehydration and regeneration device of ethylene oxide and ethylene glycol is an important link in chemical production, which involves the use of a stripping column. The function of the stripping column is to evaporate the solvent in ethylene glycol with steam, and at the same time recover the light hydrocarbon gas in ethylene glycol, which is rich in ethylene and propylene. In this process, the feed of the stripping column needs an appropriate temperature to ensure effective dehydration and regeneration. It can not only improve the energy utilization rate, reduce the production cost, but also reduce environmental pollution and achieve sustainable development.

[0003] In the actual use process, only heat exchange is carried out through the heat radiation between the rich circulating water and the cold circulating water, and the heat loss is large. There is still room for heat recovery and utilization in the operating temperature of the lean circulating water, and the temperature increase efficiency of the rich circulating water is low, so it is not convenient to use. Content of the Utility Model

[0004] Based on the technical problems that the existing device only conducts heat exchange through the heat radiation between the rich circulating water and the cold circulating water, resulting in large heat loss, there is still room for heat recovery and utilization in the operating temperature of the lean circulating water, and the lifting efficiency of the rich circulating water is low, the utility model provides a circulating absorption water waste heat recovery device.

[0005] A circulating absorption water waste heat recovery device provided by the utility model includes a base, and an exchange mechanism and a convection mechanism are respectively arranged above the base;

[0006] The exchange mechanism is located above the convection mechanism;

[0007] The exchange mechanism includes a first circulation pump, and the exchange mechanism realizes the action of the first circulation pump extracting lean circulating water for heat exchange;

[0008] The convection mechanism includes a convection fan, and the convection mechanism realizes the action of the convection fan convecting to the exchange mechanism.

[0009] Preferably, the exchange mechanism further includes a second circulation pump. The surfaces of the first circulation pump and the second circulation pump are both fixedly connected to the surface of the base. The inner wall of the first circulation pump is fixedly communicated with a lean circulating water pipe, the inner wall of the second circulation pump is fixedly communicated with a rich circulating water pipe, and a pre-filter is fixedly connected to the surface of the rich circulating water pipe.

[0010] Preferably, an exchange support and a support frame are respectively arranged above the base. The surfaces of the two exchange supports are fixedly connected to the surface of the base and the surface of the support frame respectively. The surfaces of the poor circulation water pipe and the rich circulation water pipe are both fixedly connected to the surface of the exchange support. The poor circulation water pipe and the rich circulation water pipe are symmetrically distributed with the axis of the exchange support as the center.

[0011] Preferably, a heat exchange plate is fixedly communicated with the inner wall of the poor circulation water pipe, and a cold exchange plate is fixedly communicated with the inner wall of the rich circulation water pipe. The surface of the heat exchange plate is fixedly connected to the surface of the cold exchange plate. A first support cylinder is fixedly connected to the surface of the heat exchange plate, and a second support cylinder is fixedly connected to the surface of the cold exchange plate. The two first support cylinders and the two second support cylinders are symmetrically distributed with the axis of the heat exchange plate and the axis of the cold exchange plate as the centers respectively.

[0012] Preferably, the surfaces of the poor circulation water pipe and the rich circulation water pipe are respectively fixedly connected to the inner walls of the first support cylinder and the second support cylinder. The multiple heat exchange plates and the multiple cold exchange plates are linearly arrayed in the axial direction of the exchange support.

[0013] Preferably, the convection mechanism further includes a heat insulation housing. The inner wall of the heat insulation housing is fixedly connected to the surface of the base and the surface of the support frame respectively. A support column is fixedly connected to the surface of the base. The surface of the base is fixedly connected to the surface of the convection fan. The multiple convection fans and the multiple support columns are symmetrically distributed with the axis of the base as the center.

[0014] The beneficial effects of the present utility model are as follows:

[0015] By setting that heat conduction is directly carried out through the contact between the surface of the cold exchange plate and the surface of the heat exchange plate between the rich circulation water and the poor circulation water, and the convection fan circulates the dissipated heat inside the heat insulation housing, the utilization efficiency of heat is improved, solving the technical problems that the existing device only conducts heat exchange through heat radiation between the rich circulation water and the cold circulation water, resulting in large heat loss, there is still room for heat recovery and utilization in the operating temperature of the poor circulation water, and the promotion efficiency of the rich circulation water is low. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of a circulating absorption water waste heat recovery device proposed by the present utility model;

[0017] Figure 2 It is a three-dimensional view of the support frame structure of a circulating absorption water waste heat recovery device proposed by the present utility model;

[0018] Figure 3Stereogram of the first support cylinder structure of a circulating absorption water waste heat recovery device proposed by the present utility model.

[0019] In the figure: 1, base; 2, first circulation pump; 3, convection fan; 201, second circulation pump; 202, poor circulation water pipe; 203, rich circulation water pipe; 204, pre-filter; 205, exchange bracket; 206, support frame; 207, heat exchange plate; 208, cold exchange plate; 209, first support cylinder; 210, second support cylinder; 301, heat insulation housing; 302, support column. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] Refer to Figures 1-3 , a circulating absorption water waste heat recovery device, including a base 1, an exchange mechanism and a convection mechanism are respectively arranged above the base 1;

[0022] The exchange mechanism is located above the convection mechanism;

[0023] The exchange mechanism includes a first circulation pump 2, and the exchange mechanism realizes the action of the first circulation pump 2 extracting poor circulation water to exchange heat;

[0024] The convection mechanism includes a convection fan 3, and the convection mechanism realizes the action of the convection fan 3 convecting to the exchange mechanism.

[0025] The exchange mechanism further includes a second circulation pump 201. The surfaces of the first circulation pump 2 and the second circulation pump 201 are both fixedly connected to the surface of the base 1. The inner wall of the first circulation pump 2 is fixedly communicated with a poor circulation water pipe 202, the inner wall of the second circulation pump 201 is fixedly communicated with a rich circulation water pipe 203, and a pre-filter 204 is fixedly connected to the surface of the rich circulation water pipe 203.

[0026] Furthermore, the rich circulation water is filtered by the pre-filter 204 and then undergoes heat exchange and is reused.

[0027] An exchange bracket 205 and a support frame 206 are respectively arranged above the base 1. The surfaces of the two exchange brackets 205 are respectively fixedly connected to the surface of the base 1 and the surface of the support frame 206. The surfaces of the poor circulation water pipe 202 and the rich circulation water pipe 203 are both fixedly connected to the surface of the exchange bracket 205. The poor circulation water pipe 202 and the rich circulation water pipe 203 are symmetrically distributed with the axis of the exchange bracket 205 as the center.

[0028] Further, the hot water flows in from the top and out from the bottom in the poor circulation water pipe 202 on the exchange support 205, and the cold water flows in from the bottom and out from the top in the rich circulation water pipe 203 on the exchange support 205.

[0029] The inner wall of the poor circulation water pipe 202 is fixedly connected to a heat exchange plate 207, the inner wall of the rich circulation water pipe 203 is fixedly connected to a cold exchange plate 208, the surface of the heat exchange plate 207 is fixedly connected to the surface of the cold exchange plate 208, the surface of the heat exchange plate 207 is fixedly connected to a first support cylinder 209, the surface of the cold exchange plate 208 is fixedly connected to a second support cylinder 210, and the two first support cylinders 209 and the two second support cylinders 210 are symmetrically distributed with the axis of the heat exchange plate 207 and the axis of the cold exchange plate 208 as the centers respectively.

[0030] Further, the heat exchange plate 207 and the cold exchange plate 208 increase the contact area to improve the heat exchange efficiency.

[0031] The surface of the poor circulation water pipe 202 and the surface of the rich circulation water pipe 203 are respectively fixedly connected to the inner wall of the first support cylinder 209 and the inner wall of the second support cylinder 210, and the multiple heat exchange plates 207 and the multiple cold exchange plates 208 are linearly arrayed along the axis direction of the exchange support 205.

[0032] Further, the multiple heat exchange plates 207 and the multiple cold exchange plates 208 are arranged in an alternating manner to improve the heat exchange efficiency.

[0033] The convection mechanism further includes a heat insulation outer shell 301, the inner wall of the heat insulation outer shell 301 is respectively fixedly connected to the surface of the base 1 and the surface of the support frame 206, the surface of the base 1 is fixedly connected to a support column 302, the surface of the base 1 is fixedly connected to the surface of the convection fan 3, and the multiple convection fans 3 and the multiple support columns 302 are symmetrically distributed with the axis of the base 1 as the center.

[0034] Further, the convection fan 3 circulates the dissipated heat on the inner wall of the heat insulation outer shell 301 to improve the heat exchange efficiency.

[0035] By setting that the heat conduction is directly carried out between the rich circulation water and the poor circulation water through the surface of the cold exchange plate 208 and the surface of the heat exchange plate 207, and the convection fan 3 circulates the dissipated heat inside the heat insulation outer shell 301, the utilization efficiency of the heat is improved, and the technical problems that the existing device only conducts heat exchange through the heat radiation between the rich circulation water and the cold circulation water, resulting in large heat loss, there is still room for heat recovery and utilization in the operating temperature of the poor circulation water, and the lifting efficiency of the rich circulation water is low are solved.

[0036] Working principle:

[0037] Before use, the first circulation pump 2 above the base 1 pumps hot water from the poor circulation water pipe 202, passes it above the two heat exchange brackets 205, flows out from the first circulation pump 2, and then absorbs heat. The second circulation pump 201 is connected to the rich circulation water pipe 203 to pump cold water, passes through the second circulation pump 201 and the filter, and then flows out after passing through the two heat exchange brackets 205 below the heat exchange brackets 205 for use. The two heat exchange brackets 205 are respectively arranged on the surface of the base 1 and the surface of the support frame 206. The hot water inside the poor circulation water pipe 202 flows from top to bottom, and the cold water inside the rich circulation water pipe 203 flows from bottom to top. The inside of the poor circulation water pipe 202 is fixedly communicated with the inner wall of the heat exchange plate 207, and the inside of the rich circulation water pipe 203 is fixedly communicated with the inner wall of the cold exchange plate 208. The surface of the heat exchange plate 207 is fixedly connected to the surface of the cold exchange plate 208, increasing the contact area of heat conduction. A plurality of heat exchange plates 207 and a plurality of cold exchange plates 208 are arranged alternately to improve the efficiency of heat exchange. The surface of the base 1 is fixedly connected with a heat insulation outer shell 301 arranged outside the heat exchange mechanism, and the convection fan 3 on the surface of the base 1 circulates the heat inside the heat insulation outer shell 301 to improve the utilization efficiency of heat.

[0038] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A circulating absorption water waste heat recovery device, comprising a base (1), characterized in that: An exchange mechanism and a convection mechanism are respectively arranged above the base (1); The exchange mechanism is located above the convection mechanism; The exchange mechanism comprises a first circulation pump (2), and the exchange mechanism realizes the action of the first circulation pump (2) extracting lean circulation water to exchange heat; The convection mechanism comprises a convection fan (3), and the convection mechanism realizes the action of the convection fan (3) to convect the exchange mechanism.

2. A circulating absorption water waste heat recovery device according to claim 1, characterized in that: The exchange mechanism further comprises a second circulation pump (201); the surface of the first circulation pump (2) and the surface of the second circulation pump (201) are both fixedly connected to the surface of the base (1); the inner wall of the first circulation pump (2) is fixedly connected to a lean circulation water pipe (202); the inner wall of the second circulation pump (201) is fixedly connected to a rich circulation water pipe (203); and the surface of the rich circulation water pipe (203) is fixedly connected to a pre-filter (204).

3. A circulating absorption water waste heat recovery device according to claim 2, characterized in that: An exchange bracket (205) and a support bracket (206) are respectively arranged above the base (1); surfaces of the two exchange brackets (205) are respectively fixedly connected to the surface of the base (1) and the surface of the support bracket (206); surfaces of the lean circulating water pipe (202) and the surface of the rich circulating water pipe (203) are both fixedly connected to the surface of the exchange bracket (205); and the lean circulating water pipe (202) and the rich circulating water pipe (203) are symmetrically distributed with the axis of the exchange bracket (205) as the center.

4. A circulating absorption water waste heat recovery device according to claim 3, characterized in that: The inner wall of the lean circulating water pipe (202) is fixedly connected to a heat exchange plate (207), and the inner wall of the rich circulating water pipe (203) is fixedly connected to a cold exchange plate (208). The surface of the heat exchange plate (207) is fixedly connected to the surface of the cold exchange plate (208). The surface of the heat exchange plate (207) is fixedly connected to a first support tube (209), and the surface of the cold exchange plate (208) is fixedly connected to a second support tube (210). The two first support tubes (209) and the two second support tubes (210) are symmetrically distributed with the axis of the heat exchange plate (207) and the axis of the cold exchange plate (208) as the center, respectively.

5. A circulating absorption water waste heat recovery device according to claim 4, characterized in that: The surface of the lean circulating water pipe (202) and the surface of the rich circulating water pipe (203) are fixedly connected to the inner wall of the first support tube (209) and the inner wall of the second support tube (210), respectively, and the plurality of heat exchange plates (207) and the plurality of cold exchange plates (208) are distributed in a linear array in the axial direction of the exchange bracket (205).

6. A circulating absorption water waste heat recovery device according to claim 5, characterized in that: The convection mechanism also includes a heat-insulating outer shell (301), the inner wall of which is fixedly connected to the surface of the base (1) and the surface of the support frame (206), respectively; the surface of the base (1) is fixedly connected to a support column (302); the surface of the base (1) is fixedly connected to the surface of the convection fan (3); and a plurality of the convection fans (3) and a plurality of the support columns (302) are symmetrically distributed with the axis of the base (1) as the center.

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