Waste heat recovery device for chemical production

Abstract

The waste heat recovery device for chemical production comprises a heat exchange box, a heat storage tank, a circulating pump and a filter box, an air inlet is formed in one end of the heat exchange box, an air outlet is formed in the other end of the heat exchange box, and a plurality of partition plates are fixedly installed in the heat exchange box. A plurality of heat exchange pipes are arranged in the heat exchange box, the two ends of each heat exchange pipe communicate with a water inlet pipe and a water drainage pipe through splitter plates correspondingly, and the end, away from the heat exchange box, of the water drainage pipe fixedly communicates with the heat storage tank; an atomization sprayer is embedded in the side, close to the heat exchange box, of the top of the filter box, high-voltage ionizers are embedded in the front and rear end walls of the middle of the filter box, and electrostatic adsorption plates are embedded in the front and rear end walls of the side, close to the smoke exhaust pipe, of the filter box; according to the waste heat recovery device, by additionally arranging the partition plates and arranging the heat exchange pipes in a staggered mode, the heat exchange efficiency is higher, and smoke can be filtered and then discharged.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste heat recovery devices, and particularly relates to a waste heat recovery device for chemical production. Background Art

[0002] A large amount of heat is generated in chemical production. In order to avoid a large amount of heat loss and waste of resources, the heat needs to be recovered. The flue gas emission rate in the existing waste heat recovery device is fast and the heat exchange efficiency is not high. In addition, the flue gas after heat exchange is mostly discharged directly, causing pollution to the production environment. Utility Model Content

[0003] The utility model aims to provide a waste heat recovery device for chemical production, which prolongs the flow time of flue gas in the heat exchange box through the staggered arrangement of partitions, indirectly prolongs the heat exchange time, prolongs the flow distance of water in the heat exchange tube, and improves the heat exchange efficiency; sprays water mist through an atomizing sprayer to cool the flue gas on the one hand, and performs dust reduction treatment on the smoke dust in the flue gas on the other hand, breaks down the smoke dust in the flue gas through a high-voltage ionizer to make it charged, and adsorbs it through an electrostatic adsorption plate, and finally discharges it through a smoke exhaust pipe to prevent environmental pollution.

[0004] The utility model adopts the following technical scheme: a waste heat recovery device for chemical production, comprising a heat exchange box, a heat storage tank, a circulation pump and a filter box, wherein an air inlet is provided at one end of the heat exchange box and an air outlet is provided at the other end, a plurality of partitions are fixedly installed in the heat exchange box, a drainage pipe is fixedly installed on the top of the heat exchange box near the air inlet and a water inlet pipe is fixedly installed on the bottom near the air outlet, a plurality of heat exchange tubes are arranged in the heat exchange box and both ends of the plurality of heat exchange tubes are respectively connected with the water inlet pipe and the drainage pipe through a diverter plate;

[0005] The end of the water inlet pipe away from the heat exchange box is fixedly connected to the output end of the circulation pump, and the input end of the circulation pump is fixedly connected to the heat storage tank, and the end of the drain pipe away from the heat exchange box is fixedly connected to the heat storage tank;

[0006] One end of the filter box is fixedly connected to the air outlet of the heat exchange box and the other end is provided with a smoke exhaust pipe. An atomizing sprayer is embedded in the top of the filter box close to the heat exchange box. High-voltage ionizers are embedded in the front and rear end walls in the middle of the filter box. Electrostatic adsorption plates are embedded in the front and rear end walls of the filter box close to the smoke exhaust pipe.

[0007] As a preferred technical solution of the utility model, both ends of the heat exchange box are trumpet-shaped, and a plurality of partitions are arranged in an up-and-down staggered manner.

[0008] As a preferred technical solution of the present utility model, the heat exchange tube is made of high thermal conductivity brass.

[0009] As a preferred technical solution of the utility model, a plurality of heat exchange tubes are arranged front to back and staggered with a plurality of partitions.

[0010] As a preferred technical solution of the utility model, the inner walls of the heat storage tank and the heat exchange box are both provided with insulation layers and multiple temperature sensors are provided inside. The top of the heat storage tank is provided with a water injection pipe and the bottom is provided with a water discharge pipe.

[0011] As a preferred technical solution of the utility model, a guide hopper is provided on the top of the filter box just below the atomizing sprayer, and a plurality of sewage pipes are provided at the bottom of the guide hopper.

[0012] As a preferred technical solution of the utility model, the smoke exhaust pipe is "L"-shaped and its opening faces upward.

[0013] The beneficial effects of the utility model are:

[0014] 1. The staggered arrangement of partitions prolongs the flow time of flue gas in the heat exchange box, indirectly prolongs the heat exchange time, prolongs the flow distance of water in the heat exchange tube, and improves the heat exchange efficiency.

[0015] 2. Spraying water mist through the atomizing sprinkler can cool down the flue gas on the one hand, and reduce the dust in the flue gas on the other hand. The smoke dust in the flue gas is pierced by the high-voltage ionizer to make it charged, and adsorbed by the electrostatic adsorption plate, and finally discharged through the exhaust pipe to prevent environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of a preferred embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of another preferred embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the heat exchange box in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the filter box in the utility model.

[0021] In the figure:

[0022] 1. heat exchange box; 101. partition; 102. drain pipe; 103. water inlet pipe; 104. heat exchange tube;

[0023] 2. Heat storage tank;

[0024] 3. Circulation pump;

[0025] 4. Filter box; 401. Smoke exhaust pipe; 402. Atomizing sprayer; 403. Diversion bucket; 404. Sewage pipe; 405. High-voltage ionizer; 406. Electrostatic adsorption plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example: Figure 1-4 As shown, a waste heat recovery device for chemical production includes a heat exchange box 1, a heat storage tank 2, a circulation pump 3 and a filter box 4. An air inlet is opened at one end of the heat exchange box 1 and an air outlet is opened at the other end. A plurality of partitions 101 are fixedly installed in the heat exchange box 1. A drainage pipe 102 is fixedly installed on the top side of the heat exchange box 1 near the air inlet and a water inlet pipe 103 is fixedly installed on the bottom side near the air outlet. A plurality of heat exchange tubes 104 are arranged in the heat exchange box 1 and both ends of the plurality of heat exchange tubes 104 are respectively connected with the water inlet pipe 103 and the drainage pipe 102 through a diverter plate;

[0028] The end of the water inlet pipe 103 away from the heat exchange box 1 is fixedly connected to the output end of the circulation pump 3, and the input end of the circulation pump 3 is fixedly connected to the heat storage tank 2. The end of the drain pipe 102 away from the heat exchange box 1 is fixedly connected to the heat storage tank 2. When in use, the flue gas is input through the air inlet of the heat exchange box 1 and discharged into the filter box 4 from the air outlet of the heat exchange box 1. During this period, the circulation pump 3 draws water from the heat storage tank 2 and inputs it into the heat exchange pipe 104 through the water inlet pipe 103 to perform convection heat exchange with the flue gas with residual heat. The hot water after heat exchange flows into the heat storage tank 2 through the drain pipe 102 for circulation.

[0029] One end of the filter box 4 is fixedly connected to the air outlet of the heat exchange box 1 and the other end is provided with a smoke exhaust pipe 401. An atomizing sprayer 402 is embedded in the top of the filter box 4 near the heat exchange box 1. High-voltage ionizers 405 are embedded in the front and rear end walls of the middle part of the filter box 4. Electrostatic adsorption plates 406 are embedded in the front and rear end walls of the filter box 4 near the smoke exhaust pipe 401. When in use, the atomizing sprayer 402 sprays water mist to cool the flue gas on the one hand, and to reduce dust in the flue gas on the other hand. The high-voltage ionizer 405 breaks down the smoke dust in the flue gas to make it charged, and it is adsorbed by the electrostatic adsorption plate 406 to improve the purification effect.

[0030] Both ends of the heat exchange box 1 are trumpet-shaped, and multiple partitions 101 are staggered up and down. When in use, the purpose of flue gas backflow is achieved, and the staggered arrangement of the partitions 101 prolongs the circulation time of flue gas in the heat exchange box 1, indirectly prolonging the heat exchange time.

[0031] The heat exchange tubes 104 are made of high thermal conductivity brass. Multiple heat exchange tubes 104 are arranged front to back and staggered with multiple partitions 101. When in use, the flow distance of water in the heat exchange tubes 104 is extended, the heat exchange area is expanded, and the heat exchange efficiency is improved.

[0032] The inner walls of the heat storage tank 2 and the heat exchange box 1 are both provided with an insulation layer and multiple temperature sensors are provided inside. A water injection pipe is provided on the top of the heat storage tank 2 and a water discharge pipe is provided at the bottom. When in use, the temperature inside the heat exchange box 1 is detected by the temperature sensor, water is added to the heat storage tank 2 through the water injection pipe, and hot water is placed through the water discharge pipe for use.

[0033] A guide hopper 403 is provided at the top of the filter box 4 just below the atomizing sprayer 402 and a plurality of sewage pipes 404 are provided at the bottom of the guide hopper 403 . When in use, the sewage from the atomized dust reduction is backflowed through the guide hopper 403 and discharged through the sewage pipes 404 .

[0034] The smoke exhaust pipe 401 is "L"-shaped and has an opening facing upwards. When in use, the smoke is guided to be discharged upwards to reduce the pollution range.

[0035] The working process of this utility model:

[0036] The flue gas is input through the air inlet of the heat exchange box 1 and discharged into the filter box 4 from the air outlet of the heat exchange box 1. During this period, the circulating pump 3 draws water from the heat storage tank 2 and inputs it into the heat exchange tube 104 through the water inlet pipe 103 to perform convection heat exchange with the flue gas with residual heat. The hot water after heat exchange flows into the heat storage tank 2 through the drain pipe 102 for circulation. The flue gas enters the filter box 4, and the atomizing sprayer 402 sprays water mist to cool the flue gas on the one hand and to reduce dust in the flue gas on the other hand. The high-voltage ionizer 405 breaks down the smoke dust in the smoke to make it charged, and adsorbs it through the electrostatic adsorption plate 406, and finally discharges it through the exhaust pipe 401.

[0037] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery device for chemical production, comprising a heat exchange box (1), a heat storage tank (2), a circulation pump (3) and a filter box (4), characterized in that: The heat exchange box (1) is provided with an air inlet at one end and an air outlet at the other end; a plurality of partitions (101) are fixedly installed in the heat exchange box (1); a drainage pipe (102) is fixedly installed on the top of the heat exchange box (1) near the air inlet and a water inlet pipe (103) is fixedly installed on the bottom near the air outlet; a plurality of heat exchange tubes (104) are provided in the heat exchange box (1) and the two ends of the plurality of heat exchange tubes (104) are respectively connected to the water inlet pipe (103) and the drainage pipe (102) through a diverter plate; The end of the water inlet pipe (103) away from the heat exchange box (1) is fixedly connected to the output end of the circulation pump (3), and the input end of the circulation pump (3) is fixedly connected to the heat storage tank (2); and the end of the drainage pipe (102) away from the heat exchange box (1) is fixedly connected to the heat storage tank (2); One end of the filter box (4) is fixedly connected to the air outlet of the heat exchange box (1) and the other end is provided with a smoke exhaust pipe (401); an atomizing sprayer (402) is embedded in the top of the filter box (4) close to the heat exchange box (1); high-voltage ionizers (405) are embedded in the front and rear end walls of the middle part of the filter box (4); and electrostatic adsorption plates (406) are embedded in the front and rear end walls of the filter box (4) close to the smoke exhaust pipe (401).

2. A waste heat recovery device for chemical production according to claim 1, characterized in that: Both ends of the heat exchange box (1) are trumpet-shaped, and a plurality of partitions (101) are arranged in an up-and-down staggered manner.

3. A waste heat recovery device for chemical production according to claim 1, characterized in that: The heat exchange tube (104) is made of high thermal conductivity brass.

4. A waste heat recovery device for chemical production according to claim 3, characterized in that: The plurality of heat exchange tubes (104) are arranged front to back and are staggered with the plurality of partition plates (101).

5. The waste heat recovery device for chemical production according to claim 1, characterized in that: The inner walls of the heat storage tank (2) and the heat exchange box (1) are both provided with a heat insulation layer and are both provided with a plurality of temperature sensors inside. The top of the heat storage tank (2) is provided with a water injection pipe and the bottom is provided with a water discharge pipe.

6. A waste heat recovery device for chemical production according to claim 1, characterized in that: A flow guide hopper (403) is provided at the top of the filter box (4) directly below the atomizing sprayer (402), and a plurality of sewage pipes (404) are provided at the bottom of the flow guide hopper (403).

7. The waste heat recovery device for chemical production according to claim 1, characterized in that: The smoke exhaust pipe (401) is L-shaped and has an opening facing upward.

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