CN220018288U - Tail gas waste heat utilization device - Google Patents

Abstract

The utility model relates to a tail gas waste heat utilization device, which comprises a heat exchanger and a filter, wherein the heat exchanger comprises a first shell, the first shell is provided with a first air inlet and a first air outlet, a liquid channel is arranged in the first shell, and the tail gas which is introduced into the first shell through the first air inlet can exchange heat with liquid in the liquid channel; the filter comprises a second shell, a filter element and a cleaning device, wherein the second shell is provided with a second air inlet and a second air outlet, the second air inlet is communicated with the first air outlet, the filter element is arranged in the second shell and between the second air inlet and the second air outlet, the filter element is used for filtering tail gas entering the second shell, and the cleaning device is configured as a cleaning nozzle which is used for spraying cleaning liquid towards the filter element. The tail gas waste heat utilization device can recover tail gas waste heat and purify tail gas.

Description

Tail gas waste heat utilization device

Technical Field

The disclosure relates to the technical field of tail gas waste heat utilization equipment for thermal power plants, in particular to a tail gas waste heat utilization device.

Background

At present, tail gas generated by a thermal power plant is directly discharged into the atmosphere after being slightly treated, so that the problems of resource waste and environmental pollution are easily caused. To cope with the above problems, in the related art, the following is currently announced: the utility model patent of CN218410844U discloses a thermal power plant power generation tail gas waste heat utilization device, which comprises a purifying box, wherein a hot air pipe is arranged on the purifying box. The tail gas waste heat utilization device has the following using process: firstly, tail gas is led into a purifying box to purify dust and harmful substances in the tail gas, and then the purified tail gas is discharged from a hot air pipe and is collected. The tail gas waste heat utilization device can solve the problem of pollution of tail gas to the environment, but does not utilize heat in the tail gas, and still has the problem of resource waste.

Disclosure of Invention

The purpose of this disclosure is to provide a tail gas waste heat utilization device, and this tail gas waste heat utilization device can compromise the recovery of tail gas waste heat and the purification of tail gas.

In order to achieve the above object, the present disclosure provides a tail gas waste heat utilization device, including a heat exchanger and a filter, where the heat exchanger includes a first housing, the first housing has a first air inlet and a first air outlet, a liquid channel is disposed in the first housing, and tail gas introduced into the first housing through the first air inlet can exchange heat with liquid in the liquid channel; the filter comprises a second shell, a filter element and a cleaning device, wherein the second shell is provided with a second air inlet and a second air outlet, the second air inlet is communicated with the first air outlet, the filter element is arranged in the second shell and between the second air inlet and the second air outlet, the filter element is used for filtering tail gas entering the second shell, and the cleaning device is configured as a cleaning nozzle which is used for spraying cleaning liquid towards the filter element.

Optionally, the filter includes a collection chamber in communication with the second housing, the collection chamber being located below the filter element and having a collection port disposed toward the filter element.

Optionally, a first flow guiding piece is arranged in the second shell, the first flow guiding piece is provided with a first flow guiding surface which is obliquely arranged, and the first flow guiding surface is gradually close to the edge of the collecting opening from top to bottom.

Optionally, a second flow guiding member is arranged in the collecting cavity, the second flow guiding member comprises a flow guiding plate and a supporting member for supporting the flow guiding plate, and the flow guiding plate is of an inverted V-shaped structure and is provided with a first flow guiding section and a second flow guiding section which are connected with each other.

Optionally, the support member includes a first support section, a second support section and a third support section, the first support section is used for supporting the first diversion section, the second support section is used for supporting the second diversion section, and the first support section and the second support section are both connected to the third support section.

Optionally, a drain is provided at the bottom of the collecting cavity, a drain pipe is connected to the drain, a cover is provided on the drain, and the cover is used for selectively blocking the drain.

Optionally, the filter element is configured as a filter screen, which is connected obliquely in the second housing.

Optionally, the filter piece wears to establish on the second casing, just the upper and lower both ends of filter piece stretch out respectively the second casing, the filter still include connect in the centre gripping subassembly of second casing, the upper and lower both ends of filter piece are respectively by one the centre gripping subassembly centre gripping.

Optionally, the clamping assembly includes first clamp splice, second clamp splice and screw fastener, first clamp splice with the second clamp splice sets up respectively the both sides that the filter is relative to be set up, screw fastener connects first clamp splice with between the second clamp splice.

Optionally, a liquid inlet and a liquid outlet which are communicated with the liquid channel are formed in the first shell, an insulation box is connected to the liquid outlet, and/or a UV photolysis device is communicated to the second air outlet.

Through above-mentioned technical scheme, the tail gas waste heat utilization device that this disclosure provided before using, communicate the first air inlet of tail gas emission passageway and first casing earlier, communicate the second air inlet of second casing and the first gas outlet of first casing simultaneously, the tail gas carries out heat exchange with the liquid in the liquid channel after getting into first casing, then, the tail gas after the heat exchange gets into in the second casing through the second air inlet of second casing, the tail gas in the second casing is discharged the second casing by the second gas outlet after the filter purifies. Compared with the mode of purifying the tail gas only in the related art, the tail gas waste heat utilization device provided by the disclosure not only utilizes the waste heat of the tail gas to heat the liquid in the liquid channel, but also finishes the purification of the tail gas, and can recover the waste heat of the tail gas and purify the tail gas. In addition, the tail gas waste heat utilization device that this disclosure provided still includes belt cleaning device, and after the filter piece used a period, the use was washd the shower nozzle to the filter piece, can effectively guarantee the filtration ability of filter piece and extension filter piece's life.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

fig. 1 is a schematic structural view of an exhaust gas waste heat utilization device provided according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a heat exchanger of the exhaust gas waste heat utilization device of FIG. 1;

FIG. 3 is a schematic view of a part of the exhaust gas waste heat utilization device in FIG. 1;

FIG. 4 is a schematic view of a part of the exhaust gas waste heat utilization device in FIG. 1;

fig. 5 is a schematic view of a part of the exhaust gas waste heat utilization device in fig. 1.

Description of the reference numerals

1-a heat exchanger; 11-a first housing; 111-a first air inlet; 112-a first air outlet; 113-a liquid inlet; 114-a liquid outlet; 12-an incubator; 2-a filter; 21-a second housing; 211-a second air inlet; 212-a second air outlet; 22-a filter; 23-cleaning a spray head; 24-collecting cavity; 241-collection port; 242-discharge port; 243-discharge pipe; 244-capping; 25-a first flow guide; 251-first flow-guiding surface; 26-a second flow guide; 261-deflector; 2611-a first deflector segment; 2612-a second deflector segment; 262-a support; 2621-a first support section; 2622-a second support section; 2623-a third support section; 27-a clamping assembly; 271-a first clamp block; 272-a second clamp block; 273-threaded fastener; 28-a liquid supply pipe; 3-UV photolysis device; 4-induced draft fan.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In this disclosure, the term "inner and outer" is used to refer to the inner and outer of the corresponding component profile, unless otherwise specified. The terms "first," "second," and the like, herein are used for distinguishing between one element and another and not for sequential or importance. Furthermore, the following description, when taken in conjunction with the accompanying drawings, like reference numerals designate the same or similar elements in different drawings.

According to a specific embodiment of the present disclosure, there is provided an exhaust gas waste heat utilization device, referring to fig. 1, 2, 3 and 4, the exhaust gas waste heat utilization device includes a heat exchanger 1 and a filter 2, the heat exchanger 1 includes a first housing 11, the first housing 11 has a first air inlet 111 and a first air outlet 112, a liquid channel is provided in the first housing 11, and exhaust gas introduced into the first housing 11 through the first air inlet 111 can exchange heat with liquid in the liquid channel; the filter 2 includes a second housing 21, a filter member 22, and a cleaning device, the second housing 21 having a second air inlet 211 and a second air outlet 212, the second air inlet 211 communicating with the first air outlet 112, the filter member 22 being disposed in the second housing 21 and between the second air inlet 211 and the second air outlet 212, the filter member 22 being for filtering exhaust gas entering the second housing 21, the cleaning device being configured as a cleaning shower head 23, the cleaning shower head 23 being for spraying cleaning liquid toward the filter member 22.

Through the above technical scheme, before the exhaust gas waste heat utilization device provided by the present disclosure is used, the exhaust gas discharge channel is communicated with the first air inlet 111 of the first shell 11, meanwhile, the second air inlet 211 of the second shell 21 is communicated with the first air outlet 112 of the first shell 11, the exhaust gas enters the first shell 11 and then exchanges heat with the liquid in the liquid channel, then, the exhaust gas after heat exchange enters the second shell 21 through the second air inlet 211 of the second shell 21, and the exhaust gas in the second shell 21 is purified by the filter 22 and then is discharged out of the second shell 21 through the second air outlet 212. Compared with the mode of purifying the tail gas only in the related art, the tail gas waste heat utilization device provided by the disclosure not only utilizes the waste heat of the tail gas to heat the liquid in the liquid channel, but also finishes the purification of the tail gas, and can recover the waste heat of the tail gas and purify the tail gas. In addition, the tail gas waste heat utilization device provided by the disclosure further comprises a cleaning device, and after the filter piece 22 is used for a period of time, the filter piece 22 is washed by the cleaning spray head 23, so that the filtering capability of the filter piece 22 can be effectively ensured, and the service life of the filter piece 22 can be prolonged.

In an exemplary embodiment of the present disclosure, referring to fig. 3 and 5, the filter 2 may include a collection chamber 24 communicating with the second housing 21, the collection chamber 24 being located below the filter 22 and having a collection port 241 disposed toward the filter 22. In this way, the cleaning liquid for cleaning the filter element 22 and the impurities on the filter element 22 can fall into the collecting cavity 24 through the collecting opening 241, thereby ensuring the clean and tidy interior of the filter 2. Of course, the filter 2 may not include the collecting chamber 24, and the second housing 21 may be provided with a drain channel, and the drain channel may be opened when the filter 22 is cleaned, so that the cleaning solution for cleaning the filter 22 and the impurities on the filter 22 may be discharged from the second housing 21 through the drain channel.

In an exemplary embodiment of the present disclosure, referring to fig. 4, a first flow guide 25 is provided in the second housing 21, and the first flow guide 25 has a first flow guide surface 251 arranged obliquely, the first flow guide surface 251 gradually approaching the edge of the collecting port 241 from top to bottom. In this way, the cleaning solution and the impurities on the filter 2 can enter the collecting cavity 24 through the diversion of the first diversion surface 251, thereby improving the collecting effect of the collecting cavity 24. In addition, according to some embodiments, referring to fig. 4, one first flow guide 25 may be disposed at each side of the collection port 241, which is not limited by the present disclosure.

In an exemplary embodiment of the present disclosure, referring to fig. 5, a second deflector 26 is provided in the collection chamber 24, the second deflector 26 including a deflector 261 and a support 262 supporting the deflector 261, the deflector 261 being constructed in an inverted V-shaped structure and having a first deflector section 2611 and a second deflector section 2612 connected to each other. Thus, when the filter 22 is cleaned, the cleaning liquid and the impurities on the filter 2 can enter the collecting cavity 24 under the guidance of the first guide section 2611 and the second guide section 2612, so that the collecting effect of the collecting cavity 24 is further improved. Of course, the deflector 261 may be configured as a conical plate, and the cleaning liquid may be deflected by the outer peripheral surface of the conical plate.

In an exemplary embodiment of the present disclosure, referring to fig. 5, the support 262 includes a first support section 2621, a second support section 2622, and a third support section 2623, the first support section 2621 for supporting the first flow guiding section 2611, the second support section 2622 for supporting the second flow guiding section 2612, the first support section 2621 and the second support section 2622 each being connected to the third support section 2623. In this way, the support 262 may provide a better support effect. Of course, the supporting member 262 may include only a supporting column, and the baffle 261 is supported and fixed on the supporting column.

In an exemplary embodiment of the present disclosure, referring to fig. 3 and 5, a drain 242 is provided at the bottom of the collection chamber 24, a drain 243 is connected to the drain 242, and a cover 244 is provided on the drain 243, the cover 244 for selectively sealing the drain 243. Thus, when the collection chamber 24 needs to be emptied, the cover 244 on the discharge pipe 243 is only required to be opened, and the operation is very convenient. Specifically, the threaded connection between the cap 244 and the discharge tube 243 further increases the ease of operation. Of course, the collection chamber 24 may be detachably mounted on the second housing 21 without the drain port 242, and when the collection chamber 24 needs to be emptied, the collection chamber 24 may be detached from the second housing 21, and the cleaning liquid and impurities in the collection chamber 24 may be poured through the collection port 241.

In an exemplary embodiment of the present disclosure, referring to fig. 3 and 4, the filter 22 is configured as a filter screen, which is obliquely connected in the second housing 21. In this way, the filtering area of the filter 22 can be increased, thereby improving the filtering efficiency. Of course, the filter element 22 may be an activated carbon filter element.

In the exemplary embodiment of the present disclosure, referring to fig. 1, 3 and 4, the filter member 22 is penetratingly provided on the second housing 21, and upper and lower ends of the filter member 22 protrude from the second housing 21, respectively, the filter 2 further includes a clamping assembly 27 connected to the second housing 21, and the upper and lower ends of the filter member 22 are clamped by one clamping assembly 27, respectively. Thus, when the filter element 22 is replaced, the clamping assembly 27 is only required to be opened, and the operation is very convenient. Of course, a buckle may be provided on the second housing 21, and the filter 22 may be fastened to the second housing 21 by the buckle.

Alternatively, referring to fig. 3, the clamping assembly 27 includes a first clamping block 271, a second clamping block 272, and a threaded fastener 273, the first clamping block 271 and the second clamping block 272 being disposed on opposite sides of the filter 22, respectively, with the threaded fastener 273 being connected between the first clamping block 271 and the second clamping block 272. The first clamping block 271 and the second clamping block 272 clamp or release the filter 22 by screwing the threaded fastener 273 when the filter 22 is disassembled. Specifically, referring to FIG. 3, the threaded fasteners 273 are bolts. Of course, the clamping assembly 27 may also be a clip by which the filter 22 is secured.

In an exemplary embodiment of the present disclosure, referring to fig. 1, a liquid inlet 113 and a liquid outlet 114 which are communicated with a liquid channel are provided on a first housing 11, an incubator 12 is connected to the liquid outlet 114, and a UV photolysis device 3 is communicated to a second air outlet 212. Thus, the heated liquid in the liquid channel can flow into the heat preservation box 12 for preservation, and the problem of energy waste is avoided. The UV photolysis device 3 can crack harmful gas and malodorous gas in the tail gas by using UV light, thereby further purifying the tail gas. Of course, in other exemplary embodiments, the thermal insulation box 12 may be connected only to the liquid outlet 114 of the first housing 11, or the UV photolysis device 3 may be connected only to the second air outlet 212. In the foregoing description, "UV in the UV photolyzer 3" is abbreviated as "Ultraviolet", and means Ultraviolet light. The purification principle of the UV photolysis device 3 is to irradiate the harmful gas and the malodorous gas with a specific ultraviolet beam, so that the harmful gas and the malodorous gas are cracked, thereby completing the purification of the harmful gas and the malodorous gas, which is the prior art and will not be described in detail herein.

In an exemplary embodiment of the present disclosure, referring to fig. 1, an induced draft fan 4 may be provided at an outlet of the UV photolysis device 3, and the induced draft fan 4 may generate negative pressure at the outlet of the UV photolysis device 3 to make the exhaust gas more easily enter the UV photolysis device 3.

In the exemplary embodiment of the present disclosure, referring to fig. 1 and 4, a liquid supply pipe 28 is connected to the cleaning head 23, and the liquid supply pipe 28 is provided to protrude from the second housing 21 for connection with the cleaning liquid supply apparatus. When cleaning of the filter 22 is required, the cleaning liquid supply device is connected to the liquid supply pipe 28, and the cleaning liquid is discharged from the cleaning head 23 through the liquid supply pipe 28, thereby completing the cleaning of the filter 22. The "cleaning liquid" in the foregoing description is specifically water, and of course, the cleaning liquid may be any other type of cleaning liquid, which is not limited herein.

Next, the present disclosure will describe in detail a use process of the exhaust gas waste heat utilization device in combination with the above specific embodiments, specifically, the use process of the exhaust gas waste heat utilization device is as follows: the exhaust gas discharge channel is communicated with the first air inlet 111 of the first shell 11, the second air inlet 211 of the second shell 21 is communicated with the first air outlet 112 of the first shell 11, the exhaust gas enters the first shell 11 and then exchanges heat with liquid in the liquid channel, then the liquid after heat exchange enters the heat insulation box 12 through the liquid outlet 114 of the liquid channel for preservation, the exhaust gas after heat exchange enters the second shell 21 through the second air inlet 211 of the second shell 21, the exhaust gas in the second shell 21 is discharged out of the second shell 21 through the second air outlet 212 after being purified through the filter 22, the exhaust gas discharged out of the second shell 21 enters the UV photolysis device 3, the UV photolysis device 3 further purifies harmful gas and malodorous gas in the exhaust gas, and the purified exhaust gas is discharged through the UV photolysis device 3.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims (10)

1. The tail gas waste heat utilization device is characterized by comprising a heat exchanger and a filter, wherein the heat exchanger comprises a first shell, the first shell is provided with a first air inlet and a first air outlet, a liquid channel is arranged in the first shell, and tail gas which is introduced into the first shell through the first air inlet can exchange heat with liquid in the liquid channel; the filter comprises a second shell, a filter element and a cleaning device, wherein the second shell is provided with a second air inlet and a second air outlet, the second air inlet is communicated with the first air outlet, the filter element is arranged in the second shell and between the second air inlet and the second air outlet, the filter element is used for filtering tail gas entering the second shell, and the cleaning device is configured as a cleaning nozzle which is used for spraying cleaning liquid towards the filter element.

2. The exhaust gas waste heat utilization device of claim 1, wherein the filter includes a collection chamber in communication with the second housing, the collection chamber being located below the filter element and having a collection port disposed toward the filter element.

3. The exhaust gas waste heat utilization device according to claim 2, wherein a first flow guiding member is arranged in the second housing, the first flow guiding member is provided with a first flow guiding surface which is obliquely arranged, and the first flow guiding surface is gradually close to the edge of the collecting port from top to bottom.

4. The exhaust gas waste heat utilization device according to claim 2, wherein a second flow guide member is provided in the collection chamber, the second flow guide member including a flow guide plate and a support member supporting the flow guide plate, the flow guide plate being constructed in an inverted V-shaped structure and having a first flow guide section and a second flow guide section connected to each other.

5. The exhaust gas waste heat utilization device of claim 4, wherein the support member comprises a first support section, a second support section, and a third support section, the first support section being configured to support the first deflector section, the second support section being configured to support the second deflector section, the first support section and the second support section both being connected to the third support section.

6. The exhaust gas waste heat utilization device according to claim 2, wherein a discharge port is formed in the bottom of the collecting cavity, a discharge pipe is communicated with the discharge port, and a sealing cover is arranged on the discharge pipe and is used for selectively sealing the discharge pipe.

7. The exhaust gas waste heat utilization device according to claim 1, wherein the filter member is configured as a filter screen, the filter screen being connected obliquely in the second housing.

8. The exhaust gas waste heat utilization device according to claim 1, wherein the filter member is disposed on the second housing in a penetrating manner, and upper and lower ends of the filter member extend out of the second housing, respectively, and the filter further comprises a clamping assembly connected to the second housing, and the upper and lower ends of the filter member are clamped by one of the clamping assemblies, respectively.

9. The exhaust gas waste heat utilization device of claim 8, wherein the clamping assembly comprises a first clamping block, a second clamping block and a threaded fastener, the first clamping block and the second clamping block are respectively arranged on two sides of the filter element opposite to each other, and the threaded fastener is connected between the first clamping block and the second clamping block.

10. The tail gas waste heat utilization device according to claim 1, wherein a liquid inlet and a liquid outlet communicated with the liquid channel are formed in the first shell, an insulation can is connected to the liquid outlet, and/or a UV photolysis device is communicated to the second air outlet.