Tail gas recovery device and polyethylene production device

Abstract

The utility model provides a tail gas recovery device and a polyethylene production device, and belongs to the technical field of tail gas treatment devices. The tail gas recovery device comprises a tower body with an opening in the top, a spraying mechanism is installed on the opening in the top of the tower body, a supporting ring is installed on the inner wall of the tower body, and a flow equalizer used for tail gas flow division is placed on the supporting ring. A detachable spraying mechanism is installed on an opening in the top of a tower body, meanwhile, a supporting ring is installed on the inner wall of the tower body, a flow equalizer is placed on the supporting ring, tail gas evenly flows upwards after passing through the flow equalizer, a flow slowing device is placed on the top of the flow equalizer, and therefore after the tail gas flows through the flow slowing device, the flowing time of the tail gas is prolonged, and the tail gas can flow more evenly. In addition, the hanging bracket penetrates through the flow equalizer and the flow slowing device in a sliding mode, the flow equalizer and the flow slowing device can be lifted out of the tower body upwards through the hanging bracket, and the flow equalizer and the flow slowing device are convenient to maintain.

Description

Technical Field

[0001] The present application relates to the field of tail gas treatment devices, and in particular, to a tail gas recovery device and a polyethylene production device. Background Art

[0002] Chlorinated polyethylene is a saturated polymer material with the appearance of white powder. It is non-toxic and odorless and has excellent weather resistance, ozone resistance, chemical resistance and aging resistance. Chlorinated polyethylene is a polymer material made from high-density polyethylene through a chlorination substitution reaction. During the production process, the exhaust gas contains chlorine and its compounds, which is one of the factors that form acid rain. Therefore, the chlorine and its compounds contained in the exhaust gas should be recovered before the exhaust gas is discharged.

[0003] When treating the tail gas generated in the production process of chlorinated polyethylene, the tail gas is put into a spray tower, so that the tail gas flows from bottom to top in the spray tower and contacts with the absorption liquid sprayed downward in the spray tower to absorb chlorine and its compounds. However, the time for the tail gas to flow through the spray tower determines its absorption effect. The existing spray head lacks a device to alleviate the flow of tail gas, so there is a problem of poor absorption effect of chlorine and its compounds. For this reason, we propose a tail gas recovery device and a polyethylene production device. Utility Model Content

[0004] In order to make up for the above deficiencies, the present application provides a tail gas recovery device and a polyethylene production device, aiming to improve the problem of poor recovery effect of chlorine and its compounds in the existing tail gas recovery device.

[0005] In the first aspect, an embodiment of the present application provides an exhaust gas recovery device, comprising a tower body with an opening at the top, a spray mechanism installed on the top opening of the tower body, and a support ring installed on the inner wall thereof, a flow equalizer for exhaust gas diversion is placed on the support ring, a flow retarder is placed on the top of the flow equalizer, and the same hanger is slidably penetrated through the flow equalizer and the flow retarder.

[0006] In a specific embodiment, the spray mechanism includes a sealing plate detachably connected to the top of the tower body, a hollow disk is fixedly installed at the bottom of the sealing plate, and a plurality of spray heads are connected to the bottom of the hollow disk.

[0007] In a specific embodiment, a liquid inlet pipe is installed on the top of the sealing plate, and the liquid inlet pipe is connected to the hollow disk.

[0008] In a specific embodiment, the flow equalizer includes a circular block placed on the support ring, the circular block is provided with evenly distributed ventilation holes, and a limiting ring is fixedly installed on the top of the circular block, and a support tube sleeved on the limiting ring is placed on the top of the circular block.

[0009] In a specific embodiment, the flow slowdown device includes a flow slowdown block placed on the support tube, the flow slowdown block is provided with a plurality of annular through holes, and a connecting frame is fixedly connected to the top thereof, the side walls at both ends of the plurality of annular through holes are arranged in a corrugated shape, and the corrugations on the side walls at both ends are arranged in an staggered manner.

[0010] In a specific embodiment, the hanger includes a hanger rod that slides through the circular block and the slow-flow block, and a hanger ring is fixedly installed on the top of the hanger rod.

[0011] In a specific embodiment, the suspension rod comprises a connecting rod slidingly passing through the circular block and the center of the slow flow block, the bottom of the connecting rod is threadedly connected to a support block, and the bottom of the circular block is placed on the support block.

[0012] In a second aspect, the present application further provides a polyethylene production device, comprising

[0013] The above-mentioned tail gas recovery device.

[0014] The beneficial effects of the present application are as follows: a detachable spray mechanism is installed on the opening at the top of the tower body, and a support ring is installed on the inner wall of the tower body, a flow equalizer is placed on the support ring, so that the exhaust gas flows upward evenly after passing through the flow equalizer, and a flow retarder is placed on the top of the flow equalizer, so that the exhaust gas flows through the flow retarder. The flow time is increased, and the spray mechanism sprays the absorption liquid into the flow retarder to improve the effect of the absorption liquid on absorbing the exhaust gas. In addition, a hanger is slid through the flow equalizer and the flow retarder, and the flow equalizer and the flow retarder can be lifted upward out of the tower body through the hanger, which is convenient for maintaining the flow equalizer and the flow retarder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the main structure of the tail gas recovery device and the polyethylene production device provided in the embodiment of the present application;

[0017] Figure 2 A schematic diagram of a tail gas recovery device and a polyethylene production device provided in an embodiment of the present application, viewed from a first perspective;

[0018] Figure 3 A schematic diagram of the structure of a tail gas recovery device and a polyethylene production device provided in an embodiment of the present application, viewed from a second perspective;

[0019] Figure 4 A schematic diagram of the front cross-sectional structure of a tail gas recovery device and a polyethylene production device provided in an embodiment of the present application;

[0020] Figure 5 Schematic diagram of the structure of the flow equalizer, flow damper and hanger in the tail gas recovery device and polyethylene production device provided in the implementation manner of the present application.

[0021] In the figure: 10-tower body; 20-spraying mechanism; 210-sealing plate; 220-hollow disk; 230-sprinkler; 240-liquid inlet pipe; 30-support ring; 40-flow equalizer; 410-circular block; 420-vent; 430-limiting ring; 440-support pipe; 50-slow flow device; 510-slow flow block; 520-annular through hole; 530-connecting frame; 60-hanging bracket; 610-hanging rod; 6110-connecting rod; 6120-support block; 620-hanging ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0023] See also Figure 1-5 The present application provides an exhaust gas recovery device, including a tower body 10 with an opening at the top, a spray mechanism 20 is installed on the top opening of the tower body 10, and a support ring 30 is installed on the inner wall thereof, a flow equalizer 40 for exhaust gas diversion is placed on the support ring 30, a flow retarder 50 is placed on the top of the flow equalizer 40, and the same hanger 60 is slidably penetrated through the flow equalizer 40 and the flow retarder 50. Specifically, an air inlet pipe and an air outlet pipe are connected to the side wall of the tower body 10, the air inlet pipe is arranged near the bottom of the tower body 10, and the air outlet pipe is located at the top of the tower body 10. At the same time, a drainage pipe is also connected to the bottom of the side wall of the tower body 10, and the exhaust gas enters the tower body 10 through the air inlet pipe through the air ducting mechanism, and the spray mechanism 20 sprays absorption liquid to absorb the exhaust gas.

[0024] See also Figure 1-3 The spray mechanism 20 includes a sealing plate 210 detachably connected to the top of the tower body 10, a hollow disk 220 is fixedly installed at the bottom of the sealing plate 210, and a plurality of nozzles 230 are connected to the bottom of the hollow disk 220. A liquid inlet pipe 240 is installed on the top of the sealing plate 210, and the liquid inlet pipe 240 is connected to the hollow disk 220. When set, the sealing plate 210 is connected to the top of the tower body 10 through the existing bolt structure to fix the sealing plate 210 on the top of the tower body 10, and the liquid inlet pipe 240 is connected to the existing absorption liquid conveying device to transport the absorption liquid into the hollow disk 220, so that the absorption liquid is sprayed downward from the plurality of nozzles 230.

[0025] See also Figure 5The flow equalizer 40 includes a circular block 410 placed on the support ring 30, the circular block 410 is provided with evenly distributed air holes 420, and a limiting ring 430 is fixedly installed on the top of the circular block 410. A support tube 440 is placed on the top of the circular block 410 and is sleeved on the limiting ring 430. It should be noted that the limiting ring 430 can limit the support tube 440 to prevent the support tube 440 from moving on the top of the circular block 410, and the interior of the support tube 440 is a stable flow area, so that the exhaust gas passes through a number of air holes 420 and then flows upward evenly into the support tube 440, and then flows into the retarder 50.

[0026] See also Figure 5 The flow retarder 50 includes a flow retarder block 510 placed on the support tube 440, and a plurality of annular through holes 520 are provided on the flow retarder block 510, and a connecting frame 530 is fixedly connected to the top thereof. Specifically, the connecting frame 530 is used to connect the various components of the flow retarder block 510, and the side walls at both ends of the plurality of annular through holes 520 are both arranged in a corrugated shape, and the corrugations on the side walls at both ends are arranged in a staggered manner. In the specific arrangement, a plurality of annular through holes 520 are provided, and at the same time, the side walls at both ends of the annular through holes 520 are both arranged in a corrugated shape, so that when the exhaust gas enters the annular through holes 520, it will flow in a corrugated shape along the corrugated inner wall, thereby increasing the flow time of the exhaust gas in the flow retarder block 510, and the sprayed absorption liquid will enter the annular through holes 520, so that the absorption liquid flows on its corrugated inner wall, so as to absorb chlorine and its compounds in the exhaust gas.

[0027] See also Figure 5 The hanger 60 includes a hanger rod 610 that slides through the circular block 410 and the slow flow block 510, and a lifting ring 620 is fixedly installed on the top of the hanger rod 610. The hanger rod 610 includes a connecting rod 6110 that slides through the circular block 410 and the center of the slow flow block 510. The bottom of the connecting rod 6110 is threadedly connected to a support block 6120, and the bottom of the circular block 410 is placed on the support block 6120. It should be noted that a threaded hole is provided at the bottom of the connecting rod 6110, and the support block 6120 is T-shaped and has threads thereon to achieve a threaded connection between the support block 6120 and the connecting rod 6110, so that the flow equalizer 40 can be placed on the support block 6120, so that when the lifting ring 620 is lifted by the existing lifting device, the flow equalizer 40 and the slow flow block 50 can be lifted, which is convenient for disassembling and assembling the flow equalizer 40 and the slow flow block 50.

[0028] A polyethylene production device, comprising

[0029] The above-mentioned tail gas recovery device.

[0030] When the tail gas recovery device and the polyethylene production device are in use: the tail gas is introduced into the tower body 10 through the air inlet pipe by the air ducting device, and at the same time, the existing absorption liquid conveying device conveys the absorption liquid into the hollow plate 220 through the liquid inlet pipe 240, and the absorption liquid is sprayed downward through a plurality of nozzles 230, and then drips to the top of the flow retarder 50, flows into a plurality of annular through holes 520, and flows to the circular block 410, flows to the bottom of the tower body 10 through a plurality of air holes 420, and the tail gas flows upward through the plurality of air holes 420 on the circular block 410, flows upward through the support pipe 440 to the plurality of annular through holes 520, and then flows upward to be discharged from the air outlet pipe, so as to absorb chlorine and its compounds in the tail gas.

[0031] It should be noted that the specific model and specifications of the tower body 10 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in the field, so it will not be described in detail.

[0032] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A tail gas recovery device, characterized in that: The tower body (10) comprises a tower body (10) with an opening at the top, a spray mechanism (20) being installed on the top opening of the tower body (10), and a support ring (30) being installed on the inner wall thereof, a flow equalizer (40) for tail gas diversion being placed on the support ring (30), a flow retarder (50) being placed on the top of the flow equalizer (40), and a same hanger (60) slidingly penetrating the flow equalizer (40) and the flow retarder (50).

2. The tail gas recovery device according to claim 1, characterized in that: The spray mechanism (20) comprises a sealing plate (210) detachably connected to the top of the tower body (10), a hollow disk (220) is fixedly mounted at the bottom of the sealing plate (210), and a plurality of spray heads (230) are connected to the bottom of the hollow disk (220).

3. The tail gas recovery device according to claim 2, characterized in that: A liquid inlet pipe (240) is installed on the top of the sealing plate (210), and the liquid inlet pipe (240) is connected to the hollow plate (220).

4. The tail gas recovery device according to claim 1, characterized in that: The flow equalizer (40) comprises a circular block (410) placed on the support ring (30), the circular block (410) is provided with evenly distributed vent holes (420), a limiting ring (430) is fixedly installed on the top of the circular block (410), and a support tube (440) sleeved on the limiting ring (430) is placed on the top of the circular block (410).

5. The tail gas recovery device according to claim 4, characterized in that: The flow slower (50) comprises a flow slowing block (510) placed on the support tube (440), a plurality of annular through holes (520) are provided on the flow slowing block (510), and a connecting frame (530) is fixedly connected to the top of the flow slowing block (510), and the side walls at both ends of the plurality of annular through holes (520) are both arranged in a corrugated shape, and the corrugations on the side walls at both ends are arranged in a staggered manner.

6. The tail gas recovery device according to claim 5, characterized in that: The hanger (60) comprises a hanger rod (610) which slides through the circular block (410) and the slow flow block (510), and a hanger ring (620) is fixedly installed on the top of the hanger rod (610).

7. The tail gas recovery device according to claim 6, characterized in that: The suspension rod (610) includes a connecting rod (6110) that slides through the center of the circular block (410) and the slow flow block (510), and the bottom of the connecting rod (6110) is threadedly connected to a support block (6120), and the bottom of the circular block (410) is placed on the support block (6120).

8. A polyethylene production device, characterized in that: It comprises the tail gas recovery device as described in any one of claims 1 to 7.

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