CN112023836A

CN112023836A - Cylinder type tangential gas distributor

Info

Publication number: CN112023836A
Application number: CN202011041921.4A
Authority: CN
Inventors: 卫海涛; 谢承飞
Original assignee: Jiangsu Yongda Chemical Machinery Co ltd
Current assignee: Jiangsu Yongda Chemical Machinery Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2020-12-04

Abstract

The invention relates to a cylinder type tangential gas distributor which is used for a radial reactor, wherein the radial reactor comprises a shell, a heat exchange tube bundle is arranged in the shell, an inner cylinder is arranged in the heat exchange tube bundle, an outer cylinder is arranged outside the heat exchange tube bundle, a catalyst is filled between the inner cylinder and the outer cylinder, and the catalyst is immersed in the heat exchange tube bundle; the distributor comprises two kinds of distributors, namely an inner distributor and an outer distributor, wherein the inner distributor and the outer distributor are both cylindrical and formed by overlapping and connecting three layers of structures; the inner distributor is the inner cylinder, and the outer distributor is the outer cylinder; the outer layer of the outer distributor is a framework layer, the middle layer of the outer distributor is a louver layer, and the inner layer of the outer distributor is a silk screen layer; the inner layer of the inner distributor is a framework layer, the middle layer is a shutter layer, and the outer layer is a silk screen layer; the louver layer is a thin steel plate, and a plurality of louver windows are formed on the louver layer through punching; the framework layer is a thick steel plate, a plurality of small holes are drilled in the framework layer, and the small holes correspond to the louver windows one by one; the silk screen layer is a silk screen.

Description

Cylinder type tangential gas distributor

Technical Field

The invention relates to a radial reactor, in particular to a cylindrical tangential gas distributor.

Background

In the coal chemical engineering project, a novel reactor, a radial reactor, is emerging. The reactor has the advantages of high efficiency and small volume, but in practice, the problem is that the path of the gas in the catalyst is slightly short, and the phenomenon of insufficient reaction can occur in some occasions. The gas flow path is shown in fig. 7.

Disclosure of Invention

The invention provides a cylindrical tangential gas distributor.

The technical scheme of the invention is as follows:

a cylinder type tangential gas distributor is used for a radial reactor, the radial reactor comprises a shell, a heat exchange tube bundle is arranged in the shell, an inner cylinder is arranged in the heat exchange tube bundle, an outer cylinder is arranged outside the heat exchange tube bundle, a catalyst is filled between the inner cylinder and the outer cylinder, and the catalyst is immersed in the heat exchange tube bundle; the distributor comprises two kinds of distributors, namely an inner distributor and an outer distributor, wherein the inner distributor and the outer distributor are both cylindrical and formed by overlapping and connecting three layers of structures; the inner distributor is the inner cylinder, and the outer distributor is the outer cylinder.

The outer layer of the outer distributor is a framework layer, the middle layer is a shutter layer, and the inner layer is a silk screen layer.

The inner layer of the inner distributor is a framework layer, the middle layer is a shutter layer, and the outer layer is a silk screen layer.

The louver layer is a thin steel plate, a plurality of louver windows are formed on the louver layer by punching, and the louver windows are inclined to the side of the wire mesh layer; the framework layer is a thick steel plate, a plurality of small holes are drilled in the framework layer, and the small holes correspond to the louver windows one by one; the silk screen layer is a silk screen.

The working principle is as follows: when the mixed gas passes through the outer cylinder or the inner cylinder, the mixed gas enters the louver windows from the small holes of the framework layer, the louver windows force the gas to turn from radial flow to tangential flow, the flow path of the gas is greatly increased, the contact time of the mixed gas and the catalyst is longer, and the reaction is more sufficient.

The louver windows are divided into a plurality of rows from top to bottom; a plurality of circles of round steel are sequentially welded on one side surface, close to the wire mesh layer, of the thin steel plate from top to bottom, and the round steel is located between two adjacent rows of louver windows; the round steel lines off the wire mesh.

And small supporting ribs are reserved in the louver window and support and connect the upper edge and the lower edge of the louver window.

A plurality of bosses are formed by punching on the thin steel plate, and the bosses are positioned between two radial adjacent louver windows towards the side of the silk screen layer; the silk screen is spot-welded on the lug boss.

The invention has the following beneficial effects:

1. the tangential gas distribution makes the gas take the same path as an involute in the catalyst, and compared with a radial distributor, the reaction path is much longer, so that the reaction is more complete.

2. Compared with the method of adopting the tangential installation of the main air inlet pipe to realize tangential air distribution, the tangential air distribution of the louver window has stronger tangential effect and better uniformity on the whole cylindrical surface.

Drawings

Fig. 1 is a schematic diagram of a distributor.

Fig. 2 is a partially expanded schematic view of a distributor.

Fig. 3 is a schematic sectional view taken along the direction of fig. 2A-a.

Fig. 4 is a schematic sectional view taken along the direction of fig. 2B-B.

Fig. 5 is a schematic sectional view in the direction of fig. 2C-C.

Fig. 6 is a schematic diagram of the gas flow path (1).

Fig. 7 is a schematic diagram of the gas flow path (2).

In the figure, a framework layer 1, a louver layer 2, a silk screen layer 3, round steel 4, an outer cylinder 5 and an inner cylinder 6 are shown.

Detailed Description

As shown in fig. 1-6, a cylindrical tangential gas distributor is used for a radial reactor, the radial reactor comprises a shell, a heat exchange tube bundle is arranged in the shell, an inner cylinder 6 is arranged in the heat exchange tube bundle, an outer cylinder 5 is arranged outside the heat exchange tube bundle, a catalyst is filled between the inner cylinder 6 and the outer cylinder 5, and the catalyst is immersed in the heat exchange tube bundle; the distributor comprises two kinds of distributors, namely an inner distributor and an outer distributor, wherein the inner distributor and the outer distributor are both cylindrical and formed by overlapping and connecting three layers of structures; the inner distributor is the inner cylinder 6, and the outer distributor is the outer cylinder 5.

The outer layer of the outer distributor is a framework layer 1, the middle layer is a louver layer 2, and the inner layer is a silk screen layer 3.

The inner layer of the inner distributor is a framework layer 1, the middle layer is a louver layer 2, and the outer layer is a silk screen layer 3.

The louver layer 2 is a thin steel plate, a plurality of louver windows are formed on the thin steel plate in a stamping mode, and the louver windows are inclined towards the side of the wire mesh layer; the framework layer 1 is a thick steel plate, a plurality of small holes are drilled on the thick steel plate, and the small holes correspond to the louver windows one by one; the silk screen layer 3 is a silk screen. The louver windows are divided into a plurality of rows from top to bottom; a plurality of circles of round steel 4 are sequentially welded on one side surface of the thin steel plate, which is close to the wire mesh layer 3, from top to bottom, and the round steel 4 is positioned between two adjacent rows of louver windows; the round steel 4 supports the wire mesh; small supporting ribs are reserved in the louver window and support and connect the upper edge and the lower edge of the louver window; a plurality of bosses are formed by punching the thin steel plate, face to the 3 side of the wire mesh layer and are positioned between two radial adjacent louver windows; the silk screen is spot-welded on the lug boss.

Because of the limited character expression, there exist practically unlimited specific structures, and it will be apparent to those skilled in the art that a number of improvements, decorations, or changes may be made without departing from the principles of the present invention, or the above technical features may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims

1. A cylinder type tangential gas distributor is used for a radial reactor, the radial reactor comprises a shell, a heat exchange tube bundle is arranged in the shell, an inner cylinder is arranged in the heat exchange tube bundle, an outer cylinder is arranged outside the heat exchange tube bundle, a catalyst is filled between the inner cylinder and the outer cylinder, and the catalyst is immersed in the heat exchange tube bundle; the distributor is characterized by comprising two distributors, namely an inner distributor and an outer distributor, wherein the inner distributor and the outer distributor are cylindrical and are formed by overlapping and connecting three layers of structures; the inner distributor is the inner cylinder, and the outer distributor is the outer cylinder;

the outer layer of the outer distributor is a framework layer, the middle layer of the outer distributor is a louver layer, and the inner layer of the outer distributor is a silk screen layer;

the inner layer of the inner distributor is a framework layer, the middle layer is a shutter layer, and the outer layer is a silk screen layer;

2. The tangential gas distributor of claim 1, wherein the louvers are divided into a plurality of rows from top to bottom; a plurality of circles of round steel are sequentially welded on one side surface, close to the wire mesh layer, of the thin steel plate from top to bottom, and the round steel is located between two adjacent rows of louver windows; the round steel lines off the wire mesh.

3. The tangential gas distributor of claim 1, wherein the louver has a small support rib left therein, the small support rib supporting and connecting the upper and lower edges of the louver.

4. A cylindrical tangential gas distributor according to claim 1, wherein said thin steel plate is stamped to form a plurality of bosses protruding to the wire mesh layer side between two radially adjacent louver windows; the silk screen is spot-welded on the lug boss.