Flue gas purification device for chemical environment protection

Abstract

The utility model discloses a flue gas purification device for chemical environment protection, which comprises a combustion furnace, and the upper end of the combustion furnace is fixedly connected with a chimney; the filter screen is fixedly mounted on the inner side of the chimney; the waste heat recovery assembly is arranged on the outer side of the chimney; the knocking assembly is arranged at the lower end of the filter screen, and the knocking assembly is connected with the waste heat recovery assembly; wherein the waste heat recovery assembly is used for recovering heat on the inner side of the chimney; and the knocking assembly is used for knocking the bottom of the filter screen. According to the flue gas purification device for chemical environment protection, flue gas generated by combustion of the combustion furnace can be discharged outwards along the chimney, impurities such as dust in the flue gas are intercepted through the filter screen, and when the flue gas moves outwards along the chimney, heat carried by the flue gas can be transmitted to the heat exchanger through the pipe wall of the chimney; and water on the inner side is heated through the heat exchanger, so that heat is secondarily utilized, and the effect of waste heat recovery is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental protection technical field, concretely is a kind of flue gas purification device for chemical environmental protection. BACKGROUND

[0002] In the process of chemical production, the flue gas generated contains a large amount of harmful gases and dust particles, in order to avoid pollution to the surrounding environment in chemical production, it is necessary to use a flue gas purification device.

[0003] The flue gas purification device for chemical environmental protection with publication number CN219308302U is provided with two L-shaped stirring rods symmetrically on the smoke inlet pipe, the stirring rods are provided with mutually communicating smoke inlet channels and smoke return channels, the smoke inlet channels are communicated with the upper smoke inlet cavity, the smoke return channels are communicated with the lower smoke inlet cavity, the inner box body is provided with a first filter screen and a second filter screen, the inner box body side wall corresponding to the first filter section is provided with a separation hole, the first filter section is covered with a jacket, and the lower end surface of the smoke exhaust section is connected with a smoke exhaust pipe, which penetrates the outer box body and is rotationally connected with the outer box body. Not only can the flue gas be purified, but also the heat inside the flue gas can be fully utilized, the functions of flue gas purification and waste heat recovery can be realized at the same time, the land area is saved, and the process is also saved. The L-shaped stirring rod is provided with a smoke inlet channel and a smoke return channel inside, which can stir the liquid in the inner cavity of the outer box body while rotating with the smoke inlet pipe, increase the heat exchange area, and improve the water heating efficiency.

[0004] The device can intercept harmful substances in flue gas by setting multiple filter screens, but it does not have a structure for cleaning the filter screens. The filter holes on the inside of the filter screens may be blocked after a long time of intercepting impurities. If these filter screens are not dredged in time, the flue gas may be blocked in the chimney, increasing the risk of explosion of the chimney.

[0005] In view of the above problems, we have innovatively designed the flue gas purification device for chemical environmental protection on the basis of the original structure. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims to provide a flue gas purification device for chemical environmental protection to solve the problem that the device does not have a structure for cleaning the filter screens in the above background technology. The filter holes on the inside of the filter screens may be blocked after a long time of intercepting impurities. If these filter screens are not dredged in time, the flue gas may be blocked in the chimney, increasing the risk of explosion of the chimney.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: A chemical environmental protection flue gas purification device, including combustion furnace, the upper end of combustion furnace is fixedly connected with the chimney, the filter screen is fixedly installed in the inside of chimney, the waste heat recovery assembly is arranged in the outside of chimney, the knock assembly is arranged in the lower end of filter screen, and the knock assembly is connected with waste heat recovery assembly, wherein, the waste heat recovery assembly is used for heat recovery to the heat of the inside of chimney, the knock assembly is used for knocking the bottom of filter screen.

[0008] Preferably, the waste heat recovery assembly includes a connecting frame and a fastening bolt, the connecting frame is arranged on the left and right sides of the chimney, and the left and right connecting frames are connected by the fastening bolt.

[0009] Preferably, the waste heat recovery assembly further includes a heat exchanger and a water inlet, the heat exchanger is fixedly connected to the outside of the connecting frame, and the water inlet is fixedly connected to the outside of the heat exchanger.

[0010] Preferably, the waste heat recovery assembly further includes a steam port, the steam port is formed in the inside of the heat exchanger.

[0011] Preferably, the knock assembly includes a sliding rod, a sealing ring and a rack, the sliding rod is slidingly connected to the inside of the steam port, the sealing ring is fixedly connected to the outside of the sliding rod, the sealing ring is arranged on the outside of the steam port, and the rack is fixedly connected to the top of the sliding rod.

[0012] Preferably, the knock assembly further includes a connecting plate, a guide rod and an extension spring, the connecting plate is fixedly connected to the outside of the sliding rod, the guide rod is slidingly connected to the inside of the connecting plate, the guide rod is fixedly connected to the outside of the heat exchanger, and the extension spring is connected between the end of the guide rod and the connecting plate.

[0013] Preferably, the knock assembly further includes a concentric shaft, a knocking rod and a gear, the concentric shaft is rotatably connected to the inside of the chimney, the knocking rod is fixedly connected to the outside of the concentric shaft, the knocking rod is correspondingly arranged above and below the filter screen, the gear is fixedly connected to the outside of the concentric shaft, and the gear is engaged with the rack on the outside.

[0014] Compared with the prior art, the chemical environmental protection flue gas purification device has the following advantages:

[0015] 1. Waste heat recovery structure, the flue gas generated by the combustion of the combustion furnace is discharged outward along the chimney, and the dust and impurities in the flue gas are intercepted by the filter screen, when the flue gas moves outward along the chimney, the heat carried by the flue gas is transferred to the heat exchanger through the chimney pipe wall, and the heat exchanger heats the water on the inside, thereby achieving the effect of waste heat recovery.

[0016] 2. Anti-blocking structure, when the water inside the heat exchanger is continuously heated, the liquid water will be converted into gas when the water temperature reaches above 100 degrees Celsius, and the pressure inside the heat exchanger will rise, the rising pressure will make the steam push the sliding rod inside the steam port outwards, the sliding rod will drive the rack upwards and make the extension spring stretch when it is pushed out, the rack will drive the gear meshed outside to rotate, the rotation of the gear will make the knocking rod outside the concentric shaft rotate, and the head of the knocking rod will hit the bottom of the filter screen;

[0017] Further, when the steam is discharged outwards, the pressure inside the heat exchanger decreases, at this time the sliding rod is reset by the elastic force of the extension spring, so that the rack moves downwards to drive the gear to rotate in the opposite direction, and the knocking rod is reset, through the reciprocating operation of the above structure, so that the knocking rod reciprocally hits the bottom of the filter screen, and the vibration generated by the hitting will knock off the impurities inside the filter screen, thereby avoiding the blockage of the filter screen and affecting the emission of flue gas. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the sectional structure of the smoke pipe of the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the knocking assembly of the utility model;

[0021] Figure 4 It is a schematic diagram of the sectional structure of the heat exchanger of the utility model;

[0022] Figure 5 It is a schematic diagram of the sectional structure of the heat exchanger of the utility model; Figure 1 It is a schematic diagram of the sectional structure of the heat exchanger of the utility model;

[0023] In the figure: 1, combustion furnace; 2, smoke pipe; 3, filter screen; 4, waste heat recovery assembly; 401, connecting frame; 402, fastening bolt; 403, heat exchanger; 404, water inlet; 405, steam port; 5, knocking assembly; 501, sliding rod; 502, sealing ring; 503, rack; 504, connecting plate; 505, guide rod; 506, extension spring; 507, concentric shaft; 508, knocking rod; 509, gear. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-5 , the utility model provides a technical scheme: a chemical environmental protection is with flue gas purification device, it includes:

[0026] Embodiment one: as Figure 1 , Figures 3-4 The utility model provides a technical scheme: a chemical environmental protection is with flue gas purification device, discloses: combustion furnace 1, the upper end of combustion furnace 1 is fixedly connected with flue 2;Filter screen 3, filter screen 3 is fixedly installed in the inboard of flue 2;Waste heat recovery assembly 4, waste heat recovery assembly 4 is set up in the outboard of flue 2;Knocking assembly 5, knocking assembly 5 is set up in the lower end of filter screen 3, and knocking assembly 5 is connected with waste heat recovery assembly 4;Wherein, waste heat recovery assembly 4 is used to heat recovery to the heat of inboard of flue 2;Knocking assembly 5 is used to knock the bottom of filter screen 3;

[0027] Waste heat recovery assembly 4 includes connecting frame 401 and fastening bolt 402, and connecting frame 401 is set up in the left and right sides of flue 2, and the left and right sides connecting frame 401 are connected through fastening bolt 402;Waste heat recovery assembly 4 also includes heat exchanger 403 and water injection port 404, and heat exchanger 403 is fixedly connected in the outboard of connecting frame 401, and heat exchanger 403 outboard is fixedly connected with water injection port 404;Waste heat recovery assembly 4 also includes steam port 405, and steam port 405 is set up in the inboard of heat exchanger 403;

[0028] This structure combustion furnace 1 combustion produced flue gas will follow flue 2 and export, and pass through filter screen 3 and intercept the dust and other impurities of flue gas, when flue gas along flue 2 and move outward, the heat that it carries will be transferred to heat exchanger 403 through flue 2 pipe wall, pass through heat exchanger 403 and heat the water of inboard, thereby the secondary utilization of heat, reach the effect of waste heat recovery.

[0029] Embodiment two: as Figures 1-5The technical scheme shown, the utility model provides a kind of technical scheme: a flue gas purification device for chemical environmental protection discloses: knocking component 5 includes sliding rod 501, sealing ring 502 and rack 503, sliding rod 501 is slidably connected in the inside of steam port 405, and sliding rod 501 outside is fixedly connected with sealing ring 502, and sealing ring 502 is arranged in the outside of steam port 405, and sliding rod 501 top is fixedly connected with rack 503;Knocking component 5 further includes connecting plate 504, guide rod 505 and expansion spring 506, connecting plate 504 is fixedly connected in the outside of sliding rod 501, and connecting plate 504 inside is slidably connected with guide rod 505, and guide rod 505 is fixedly connected in the outside of heat exchanger 403, and expansion spring 506 is connected between the end of guide rod 505 and connecting plate 504;Knocking component 5 further includes concentric shaft 507, knocking rod 508 and gear 509, concentric shaft 507 is rotatably connected in the inside of smoke pipe 2, and concentric shaft 507 outside is fixedly connected with knocking rod 508, and knocking rod 508 and filter screen 3 are in upper and lower correspondence distribution, and concentric shaft 507 outside is fixedly connected with gear 509, and gear 509 is engaged with the outside rack 503;

[0030] This structure with the water inside heat exchanger 403 constantly heating, when water temperature reaches 100 degrees Celsius, liquid water will be converted into gas, and the pressure inside heat exchanger 403 rises, and the rising pressure will make steam push sliding rod 501 in the inside of steam port 405 outward, and sliding rod 501 is pushed out and will drive rack 503 to move upwards and make expansion spring 506 stretch, and rack 503 moves upwards and will drive the rotation of the outside meshed gear 509, and the rotation of gear 509 will drive the rotation of knocking rod 508 outside concentric shaft 507, so that the head of knocking rod 508 hits the bottom of filter screen 3, and when steam is discharged outward, the pressure inside heat exchanger 403 decreases, and sliding rod 501 is reset by the elastic force of expansion spring 506, so that rack 503 moves downwards and drives the reverse rotation of gear 509, so that knocking rod 508 is reset, and through the reciprocating operation of the above structure, so that knocking rod 508 reciprocating hits the bottom of filter screen 3, and the vibration generated by hitting will knock off the impurities blocked in the inside of filter screen 3, so as to avoid the blockage of filter screen 3, and affect the discharge of flue gas.

[0031] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A flue gas purification device for chemical environmental protection, characterized in that, Include: Combustion furnace (1), the upper end of the combustion furnace (1) is fixedly connected with a chimney (2); Filter screen (3), the filter screen (3) is fixedly installed inside the chimney (2); Waste heat recovery assembly (4), the waste heat recovery assembly (4) is arranged outside the chimney (2); Knocking assembly (5), the knocking assembly (5) is arranged at the lower end of the filter screen (3), and the knocking assembly (5) is connected with the waste heat recovery assembly (4); wherein, The waste heat recovery assembly (4) is used for heat recovery of heat inside the chimney (2); The knocking assembly (5) is used for knocking the bottom of the filter screen (3).

2. A device for flue gas purification in a chemical plant according to claim 1, characterized in that: The waste heat recovery assembly (4) includes connecting frame (401) and fastening bolt (402), the connecting frame (401) is arranged on the left and right sides of the chimney (2), and the left and right connecting frames (401) are connected by the fastening bolt (402).

3. A device for cleaning flue gas for environmental protection in chemical industry according to claim 2, characterized in that: The waste heat recovery assembly (4) further includes heat exchanger (403) and water inlet (404), the heat exchanger (403) is fixedly connected outside the connecting frame (401), and the water inlet (404) is fixedly connected outside the heat exchanger (403).

4. A device for cleaning flue gas for environmental protection in chemical industry according to claim 3, characterized in that: The waste heat recovery assembly (4) further includes steam port (405), the steam port (405) is arranged inside the heat exchanger (403).

5. A device for cleaning flue gas for environmental protection in chemical industry according to claim 1, characterized in that: The knocking assembly (5) includes sliding rod (501), sealing ring (502) and rack (503), the sliding rod (501) is slidably connected inside the steam port (405), the sealing ring (502) is fixedly connected outside the sliding rod (501), and the sealing ring (502) is arranged outside the steam port (405), and the rack (503) is fixedly connected to the top of the sliding rod (501).

6. A device for flue gas purification in a chemical plant according to claim 5, characterized in that: The knocking assembly (5) further includes connecting plate (504), guide rod (505) and expansion spring (506), the connecting plate (504) is fixedly connected outside the sliding rod (501), the guide rod (505) is slidably connected inside the connecting plate (504), and the guide rod (505) is fixedly connected outside the heat exchanger (403), and the expansion spring (506) is connected between the end of the guide rod (505) and the connecting plate (504).

7. A device for cleaning flue gas for environmental protection in chemical industry according to claim 6, characterized in that: The knocking assembly (5) further includes concentric shaft (507), knocking rod (508) and gear (509), the concentric shaft (507) is rotatably connected inside the chimney (2), the knocking rod (508) is fixedly connected outside the concentric shaft (507), and the knocking rod (508) is correspondingly distributed above and below the filter screen (3), the gear (509) is fixedly connected outside the concentric shaft (507), and the gear (509) is engaged with the outer rack (503).

Images