CN-224221077-U - Ammonia-containing tail gas absorption tower with inner ring and outer ring double structures

CN224221077UCN 224221077 UCN224221077 UCN 224221077UCN-224221077-U

Abstract

The utility model discloses an ammonia-containing tail gas absorption tower with an inner ring and an outer ring, which comprises a shell, wherein the top end of the shell is of an open structure, a mounting hole is formed in the middle of the lower surface of the shell, an air inlet pipe is fixedly connected to the inside of the mounting hole, the top end of the air inlet pipe is fixedly connected with a guide cover through a connecting rod, the upper end of the shell is clamped with an upper sealing plate, the lower surface of the upper sealing plate is fixedly connected with an inner cylinder, the inner ring and the outer ring are respectively provided with an independent spraying system and a packing layer, the inner ring is mainly used for initially absorbing high-concentration ammonia in ammonia-containing tail gas, the outer ring is further used for deeply purifying the tail gas, the double-structure design increases the gas-liquid contact area and the contact time, improves the absorption efficiency, and simultaneously, the reasonable flow and distribution of absorption liquid are realized between the inner ring and the outer ring through a special communication structure, the absorption process is optimized, and the absorption tower is novel in structure and remarkable in purification effect and can effectively treat the ammonia-containing tail gas.

Inventors

WANG ZHEN
Qia Feng
LI XINLI
HUANG ZHONG
LI ZHIJIE
LI XIANG
YANG YONG
BAI HUI
XIE CHUNQIAN

Assignees

河南骏化发展股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250527

Claims (6)

1. The ammonia-containing tail gas absorption tower with the inner ring and the outer ring of the double structure is characterized by comprising a shell (1), wherein the top end of the shell (1) is of an open structure, a mounting hole is formed in the middle of the lower surface of the shell (1), an air inlet pipe (4) is fixedly connected to the inside of the mounting hole, the top end of the air inlet pipe (4) is fixedly connected with a guide cover (5) through a connecting rod, the upper end of the shell (1) is clamped with an upper sealing plate (2), the lower surface of the upper sealing plate (2) is fixedly connected with an inner cylinder (3), the upper end of the inner cylinder (3) is provided with vent holes, the lower end outer ring side of the shell (1) is provided with vent holes in a circumferential array, the left side of the lower surface of the shell (1) is fixedly connected with a booster pump (8), the middle of the upper surface of the upper sealing plate (2) is fixedly connected with a flow dividing valve (10), the liquid inlet end of the booster pump (8) is communicated with the inside of the shell (1) through a backflow pipeline (9), the liquid outlet end of the booster pump (8) is communicated with the liquid inlet end of the flow dividing valve (10), the liquid outlet end of the flow dividing valve (10) is communicated with a spray pipe (11), the lower end of the spray pipe (11) is communicated with the inner side of the shell (1) is in a circumferential array, the lower surface of the inner side of the shell (1) is fixedly connected with the inner support leg of the shell (1), the inner surfaces of the shell (1) and the inner cylinder (3) are respectively fixedly connected with a hanging frame (13) in a circumferential array; wherein the input end of the booster pump (8) is electrically connected with the output end of an external power supply through a switch.
2. The ammonia-containing tail gas absorption tower with an inner ring and an outer ring double structures according to claim 1, further comprising a backflow cover (6), wherein the backflow cover (6) is of an inclined structure, the backflow cover (6) is fixedly connected to the lower end of an exhaust hole formed in the outer ring side of the shell (1), and baffles are arranged on two sides of the backflow cover (6).
3. The ammonia-containing tail gas absorption tower with an inner ring and an outer ring double structure according to claim 2, further comprising a rain cover (7), wherein the rain cover (7) is fixedly connected to the lower end of the outer ring surface of the shell (1) in a circumferential array, and the upper end opening of the reflux hood (6) is covered by the rain cover (7).
4. The ammonia-containing tail gas absorption tower with an inner ring and an outer ring double structure according to claim 1, wherein the lower end of the inner cylinder (3) and the inner bottom surface of the shell (1) are of a non-contact design, and a transverse strut fixedly connected with the outer surface of the air inlet pipe (4) is arranged on the inner annular surface of the lower end of the inner cylinder (3).
5. The ammonia-containing tail gas absorption tower with the inner ring and the outer ring of the double structure as claimed in claim 1, wherein two hanging frames (13) are in a group, the hanging frames (13) are in an L-shaped structure, the two hanging frames (13) are used for clamping corresponding fillers in the middle, the lower ends of the hanging frames (13) are fixedly connected with supporting plates, and the upper surfaces of the supporting plates are in contact with the fillers.
6. The ammonia-containing tail gas absorption tower with an inner ring and an outer ring double structure according to claim 1, wherein the backflow pipeline (9) is a flexible pipeline, and nickel-based alloy corrosion-resistant layers are plated on the surfaces of the outer shell (1) and the inner barrel (3).

Description

Ammonia-containing tail gas absorption tower with inner ring and outer ring double structures Technical Field The utility model relates to the technical field of tail gas absorption towers, in particular to an ammonia-containing tail gas absorption tower with an inner ring and an outer ring double structure. Background Different wastes are generated in the chemical reaction process, and the wastes in the form of solid, liquid and gas are generated, wherein the gas wastes are usually toxic and harmful gases such as ammonia, hydrogen sulfide and the like, so that the environment is seriously polluted. The ammonia gas can be used as an important chemical raw material, if recovered, the aim of saving resources can be achieved, and special devices are needed to treat the ammonia gas generated in industrial production or laboratory chemical scientific research, and the device is an ammonia gas tail gas treatment device. However, when the existing ammonia-containing tail gas absorption tower is used, the gas-liquid contact area is smaller, the contact time is short, the absorption efficiency is lower, the fluidity of the absorption liquid is poor, the treatment efficiency of equipment on the ammonia-containing tail gas is lower, and the treatment quality is poor. Disclosure of utility model The utility model aims to overcome the existing defects, and provides an ammonia-containing tail gas absorption tower with an inner ring and an outer ring, wherein the inner ring and the outer ring are respectively provided with an independent spraying system and a packing layer, the inner ring is mainly used for initially absorbing high-concentration ammonia gas in ammonia-containing tail gas, the outer ring is used for further deeply purifying the tail gas, the double-structure design increases the gas-liquid contact area and the contact time, improves the absorption efficiency, and simultaneously realizes reasonable flow and distribution of absorption liquid through a special communication structure between the inner ring and the outer ring, optimizes the absorption process, and has novel structure and remarkable purification effect, can effectively treat the ammonia-containing tail gas, and can effectively solve the problems in the background technology. The ammonia-containing tail gas absorption tower comprises a shell, wherein the top end of the shell is of an open structure, a mounting hole is formed in the middle of the lower surface of the shell, an air inlet pipe is fixedly connected to the inside of the mounting hole, a guide cover is fixedly connected to the top end of the air inlet pipe through a connecting rod, an upper sealing plate is clamped at the upper end of the shell, an inner cylinder is fixedly connected to the lower surface of the upper sealing plate, a vent hole is formed in the upper end of the inner cylinder, an exhaust hole is formed in the outer annular side of the lower end of the shell in a circumferential array, a booster pump is fixedly connected to the left side of the lower surface of the shell, a flow dividing valve is fixedly connected to the middle of the upper surface of the upper sealing plate, a liquid inlet end of the booster pump is communicated with the inside of the shell, a liquid outlet end of the booster pump is communicated with the liquid inlet end of the flow dividing valve through a backflow pipeline, a spray pipe is communicated with the inside of the shell, a support leg is fixedly connected to the lower surface of the shell in a circumferential array, and the shell and the inner surface of the inner cylinder is fixedly connected with a hanging frame in a circumferential array respectively; The input end of the booster pump is electrically connected with the output end of an external power supply through a switch. Furthermore, the absorption tower also comprises a backflow cover which is of an inclined structure and fixedly connected to the lower end of the exhaust hole formed in the outer ring side of the shell, and baffles are arranged on two sides of the backflow cover, so that the backflow cover can effectively prevent absorption liquid from flowing out of equipment during spraying, further prevent the absorption liquid from polluting the surrounding environment, and the absorption tower is safer to use. Further, the rain-proof cover is fixedly connected to the lower end of the outer ring surface of the shell in a circumferential array, and covers the upper end opening of the backflow cover, the set rain-proof cover can effectively prevent rainwater from entering the absorption tower, the concentration of the absorption liquid is prevented from being influenced due to the fact that the absorption liquid is polluted by the rainwater, the normal use of the absorption tower is prevented from being influenced, and then the absorption tower is enabled to be more stable in use. Furthermore, the lower end of the inner cylinder and the inner bottom surface of the shell are of a