Large coal gas washing tower adopting honeycomb structure

Abstract

The invention belongs to the technical field of gas purification, and particularly relates to a large coal gas washing tower adopting a honeycomb structure, which comprises a tower body, a coal gas inlet pipe, a coal gas outlet and a filler layer, and is characterized in that a grid plate is arranged at the bottom of the filler layer, filler baskets are tightly arranged on the grid plate according to the honeycomb structure, and a coal gas distribution pipe is arranged in the middle of the filler baskets; an orifice flow distributor is arranged at the top of the filler basket, and the filler basket is filled with filler; the gas distribution pipe is provided with a vent hole, and the filler basket is provided with a vent window. The invention has the advantages that: 1) the filler layer forms a honeycomb structure, and the section of the tower is fully utilized; 2) the coal gas in the filler basket horizontally flows through the ventilation window, the cleaning liquid flows from top to bottom, and the filler resistance is lowest; 3) the packing basket has a unified standard specification and is good in universality; and 4) when the tower diameter needs to be increased, only the number of the packing baskets with the standard specification is increased, the problem of large-scale packing tower can be effectively solved by arranging multiple baskets, and the packing basket is very suitable for being applied to the gas washing tower with the large tower diameter.

Description

Technical Field

[0001] The invention belongs to the technical field of gas purification, and in particular relates to a large-scale coal gas cleaning tower adopting a honeycomb structure. Background Art

[0002] Most of the coke oven gas purification equipment is a packed tower. The height of the tower equipment is more than 30 meters, and each purification tower has more than 5 layers of packing. The packing in the tower body needs to be replaced and cleaned periodically every year. The traditional construction method is to manually transport the packing in the tower through the manhole to the ground outside the tower, clean it, and then manually put the packing into bags, use a car crane to lift the packing bags into each manhole, and manually pour out the packing in the packing bags to complete the replacement.

[0003] The Chinese utility model patent with application number 202221104777.9 discloses a gas purification and dust removal device, including a washing tower, and a dust reduction unit and a filter unit arranged inside the washing tower; the side wall of the washing tower is provided with a first sewage outlet and a gas inlet from bottom to top, and the top of the washing tower is provided with a gas outlet; the dust reduction unit is arranged above the gas inlet for dust reduction treatment of the gas; the filter unit is arranged above the dust reduction unit for filtering treatment of the gas. The disadvantage of this method is that each layer of filler needs to be cleaned and transported to the ground, and the investment in manpower and materials is relatively large. The construction cost and labor intensity of personnel are high, and the construction period is long, which seriously affects the normal operation of the coke oven gas purification tower. Summary of the invention

[0004] The purpose of the present invention is to provide a large-scale gas cleaning tower with a honeycomb structure, which overcomes the shortcomings of the prior art and adopts a gas-liquid cross-flow gas purification tower honeycomb structure. Multiple packing layers are arranged in the tower, each packing layer is composed of several regular hexagonal packing baskets, each packing basket is a monomer structure, the honeycomb structure makes full use of the cross-section of the tower body, and the packing basket can be conveniently hoisted and replaced separately.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A large-scale coal gas cleaning tower adopting a honeycomb structure comprises a tower body, a coal gas inlet pipe, a coal gas outlet and a packing layer, wherein the packing layer is provided with at least two layers from top to bottom in the tower body, a grid plate is provided at the bottom of each packing layer, packing baskets are closely arranged on the grid plate in a honeycomb structure, a coal gas distribution pipe is centrally provided in the packing basket, and the top of the coal gas distribution pipe is sealed; a hole flow distributor is provided on the top of the packing basket, and the packing basket is filled with packing; a ventilation hole is provided on the coal gas distribution pipe, and a ventilation window is provided on the packing basket, and each packing basket can be hoisted and replaced separately.

[0007] Furthermore, the thickness of the filler at the top of the gas distribution pipe is not less than the maximum distance between the gas distribution pipe and the inner wall of the filler basket.

[0008] Furthermore, an inwardly inverted liquid baffle is provided on the upper edge of the ventilation window.

[0009] Furthermore, the hole flow distributor is a dish-shaped structure, the bottom hole diameter is 5-10 mm, and the number of holes distributed per square centimeter is 120-180.

[0010] Furthermore, at least one layer of blocking plate is provided in the gas distribution pipe, and ventilation holes are respectively provided on the gas distribution pipes above and below the blocking plate.

[0011] Furthermore, the packing basket is a standard regular hexagonal column, which is easy to replace.

[0012] Furthermore, the ventilation windows on the adjacently installed filling baskets are located at corresponding positions, and the gas flows horizontally.

[0013] Furthermore, at least one layer of baffles is provided in the gap between the tower body and the packing basket, so that the coal gas forms a forced zigzag flow direction.

[0014] Furthermore, the gas inlet pipe is located below the grid plate of the bottom packing layer of the tower body, and the gas inlet pipe runs through the tower body, and is connected to the passing gas distribution pipe.

[0015] Furthermore, the blocking plates and the deflectors are staggered in height direction.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) Multiple packing layers are arranged in the tower body, each packing layer includes multiple hexagonal packing baskets arranged side by side to form a honeycomb structure, making full use of the tower cross section, and the packing baskets are easy to hoist and replace;

[0018] 2) The gas in the packing basket flows horizontally through the ventilation window, and the cleaning liquid flows from top to bottom, and the packing resistance is the lowest;

[0019] 3) All packing baskets are of unified standard specifications and have good versatility;

[0020] 4) When the tower diameter needs to be increased, the number of standard packing baskets can be increased in each packing layer. The multi-basket setting can effectively solve the problem of large-scale packing towers and is very suitable for the application of large-diameter gas cleaning towers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0022] Figure 2 yes Figure 1 A schematic cross-sectional view of

[0023] Figure 3 yes Figure 1Schematic diagram of the partial structure of the central ventilation window.

[0024] In the figure: 1-tower body, 2-gas inlet pipe, 3-gas outlet, 4-filling basket, 5-gas distribution pipe, 6-hole flow distributor, 7-filling, 8-blocking plate, 9-baffle plate, 10-grid plate, 11-ventilation window, 12-liquid retaining plate. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the specific embodiments required to be used in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the present invention. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.

[0027] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the invention claimed, but merely represents selected embodiments of the present invention.

[0028] See Figure 1-3 , is a schematic diagram of the structure of an embodiment of a large-scale gas cleaning tower using a honeycomb structure of the present invention, comprising a tower body 1, a gas inlet pipe 2, a gas outlet 3 and a packing layer. The packing layer is provided with at least two layers from top to bottom in the tower body 1. A grid plate 10 is provided at the bottom of each packing layer. Packing baskets 4 are closely arranged on the grid plate 10 in a honeycomb structure. A gas distribution pipe 5 is centrally provided in the packing basket 4. The top of the gas distribution pipe 5 is sealed. A hole flow distributor 6 is provided at the top of the packing basket 4. Figure 2 Only one middle hole flow distributor 6 is shown, but in fact each filler basket 4 has one on the top, and the bottom of the hole flow distributor 6 is filled with fillers 7; ventilation holes are opened on the gas distribution pipe 5, and ventilation windows 11 are opened on the filler basket 4, and each filler basket can be hoisted and replaced separately.

[0029] The thickness of the filler 7 at the top of the gas distribution pipe 5 is not less than the maximum distance between the gas distribution pipe 5 and the inner wall of the filler basket 4 .

[0030] The ventilation window 11 is provided with an inwardly tilted liquid baffle 12 to prevent the cleaning liquid from overflowing.

[0031] The hole distributor 6 is a dish-shaped structure, with a bottom hole diameter of 5-6 mm and a number of 130-160 holes per square centimeter. At least one layer of blocking plate 8 is provided in the gas distribution pipe 5, and ventilation holes are provided on the gas distribution pipe 5 above and below the blocking plate 8 to provide a flow channel for the gas.

[0032] The packing basket 4 is a unified standard part, which is convenient for replacement. During the operation of the hole flow distributor 6, a certain liquid level is formed on the upper surface to evenly distribute the cleaning liquid and prevent the liquid-sealed coal gas from overflowing from the top of the packing basket 4.

[0033] The vent windows 11 on the adjacently installed filling baskets 4 are located at corresponding positions, and the gas flows horizontally.

[0034] At least one layer of baffles 9 is arranged in the gap between the tower body 1 and the filler basket 4, so that the coal gas forms a forced zigzag flow direction.

[0035] The gas inlet pipe 2 is located below the grid plate 10 of the bottom packing layer of the tower body 1 . The gas inlet pipe 2 penetrates the tower body 1 and is connected to the gas distribution pipe 5 passing through.

[0036] The plugging plates and the baffles 9 are staggered in the height direction so that the coal gas can flow horizontally through the vents 11, and the cleaning liquid flows from top to bottom, and the resistance of the packing is the lowest; the plugging plates 8 in the gas distribution pipe 5 cooperate with the baffles 9 in the tower to control the flow direction of the coal gas, forming a baffled flow of the coal gas through the packing layer, providing the longest purified gas channel.

[0037] 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 large-scale gas cleaning tower with a honeycomb structure, comprising a tower body, a gas inlet pipe, a gas outlet and a packing layer, characterized in that: The packing layer is provided with at least two layers from top to bottom in the tower body, and a grid is provided at the bottom of each packing layer, and packing baskets are closely arranged on the grid in a honeycomb structure, a gas distribution pipe is provided in the center of the packing basket, and the top of the gas distribution pipe is sealed; a hole flow distributor is provided on the top of the packing basket, and the packing basket is filled with packing; ventilation holes are provided on the gas distribution pipe, and ventilation windows are provided on the packing basket, and each packing basket can be hoisted and replaced separately.

2. A large-scale gas cleaning tower with a honeycomb structure according to claim 1, characterized in that: The thickness of the filler at the top of the gas distribution pipe is not less than the maximum distance between the gas distribution pipe and the inner wall of the filler basket.

3. A large-scale gas cleaning tower with a honeycomb structure according to claim 1, characterized in that: An inwardly inverted liquid baffle is arranged on the upper edge of the ventilation window.

4. A large-scale gas cleaning tower with a honeycomb structure according to claim 1, characterized in that: The hole flow distributor is a dish-shaped structure, the bottom hole diameter is 5-10 mm, and the number of holes distributed per square centimeter is 120-180.

5. The large-scale gas cleaning tower with honeycomb structure according to claim 1, characterized in that: At least one layer of blocking plate is arranged in the gas distribution pipe, and ventilation holes are respectively arranged on the gas distribution pipes above and below the blocking plate.

6. A large-scale gas cleaning tower with a honeycomb structure according to claim 1, characterized in that: The packing basket is a standard regular hexagonal column, which is easy to replace.

7. A large-scale gas cleaning tower with a honeycomb structure according to claim 1, characterized in that: The ventilation windows on the adjacently installed packing baskets are located in corresponding positions, and the gas flows horizontally.

8. The large-scale gas cleaning tower with honeycomb structure according to claim 5, characterized in that: At least one layer of baffles is arranged in the gap between the tower body and the packing basket, so that the coal gas forms a forced zigzag flow direction.

9. A large-scale gas cleaning tower with a honeycomb structure according to claim 1, characterized in that: The gas inlet pipe is located below the grid plate of the bottom packing layer of the tower body, and the gas inlet pipe runs through the tower body and is connected with the passing gas distribution pipe.

10. A large-scale gas cleaning tower with a honeycomb structure according to claim 8, characterized in that: The blocking plates and the deflectors are arranged alternately in the height direction.

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