CN219784274U

CN219784274U - Corrosion-proof overflow weir

Info

Publication number: CN219784274U
Application number: CN202320796487.3U
Authority: CN
Inventors: 孙复清; 魏瑞瑞; 武彪
Original assignee: Wuhu Xinxing Ductile Iron Pipes Co Ltd
Current assignee: Wuhu Xinxing Ductile Iron Pipes Co Ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-10-03
Anticipated expiration: 2033-04-06

Abstract

The utility model discloses an anti-corrosion overflow weir, which comprises an overflow weir shell (3) and a granular ceramic lining plate (5) which is arranged around and adhered to the inner wall of the overflow weir shell (3), wherein the top end of the overflow weir shell (3) is connected with a resolving tower pipeline (1), and the bottom end of the overflow weir is connected with a diversion trench (4). The anti-corrosion overflow weir can eliminate equipment damage caused by abrasion and corrosion of high-temperature acid gas to the outer shell of overflow weir equipment in the circulating dilution cooling process, and greatly prolongs the service life.

Description

Corrosion-proof overflow weir

Technical Field

The utility model relates to an anti-corrosion overflow weir.

Background

In the desulfurization and denitrification process, the acid gas after high-temperature analysis in the regeneration tower is cooled and diluted firstly before entering the acid making system, and the process is completed in the overflow weir. The gas is impacted to the impact surface after coming out of the analysis tower, flows into the lower part from the periphery, returns to the overflow weir after dilution and cooling, and circulates repeatedly, thereby achieving the effects of cooling and dilution.

However, the acid gas after thermal analysis in the regeneration tower has the characteristics of high temperature (the temperature is above 300 ℃) and gas impurities (carbon powder is contained in sulfur dioxide), and the impact surface of the overflow weir is used as the point of the highest theoretical corrosion, so that palladium alloy is sprayed on the surface as an important corrosion prevention procedure. However, the overflow weir shell is made of carbon steel, and is used as a first process of acid gas filtration after high-temperature analysis of the regeneration tower, the corrosion condition is very serious due to long-term corrosion by dilute sulfuric acid and friction of carbon powder, and the shell is worn and corroded to damage equipment under the condition that the internal impact surface is not damaged due to the fact that the shell wall is not a direct impact surface and is usually ignored.

Disclosure of Invention

The utility model aims to provide an anti-corrosion overflow weir, which can eliminate equipment damage caused by abrasion and corrosion of high-temperature acid gas to the outer shell of overflow weir equipment in the circulating dilution cooling process, and greatly prolongs the service life.

In order to achieve the above purpose, the utility model provides an anti-corrosion overflow weir, which comprises an overflow weir shell and a granular ceramic lining plate which is arranged around and adhered to the inner wall of the overflow weir shell, wherein the top end of the overflow weir shell is connected with a pipeline of a resolution tower, and the bottom end of the overflow weir shell is connected with a diversion trench.

Preferably, a cavity is formed between the particulate ceramic lining and the impact surface for handling acid gases flowing out of the stripper tube.

Preferably, the top end surface of the overflow weir housing is formed with a sealing surface capable of mating with a conduit of the analytical column.

Preferably, the overflow weir housing is removably affixed to the analytical column conduit.

Preferably, the bottom surface of the weir housing is formed with a sealing surface that is capable of mating with the shunt grooves.

Preferably, the detachable fastening means is a bolting.

Preferably, the plurality of bolts are provided in plural and the plurality of bolts are provided at uniform intervals in the circumferential direction.

According to the above-described aspects, the corrosion of the acid gas from the tower duct is dealt with by attaching the particulate ceramic lining plate around the inner wall of the weir housing. By adopting the structure, the acid gas firstly impacts the impact surface in the center of the overflow weir to play a role of buffering; and then flows into the diversion groove below along the gaps around the overflow weir shell, and enters the next working procedure after being cooled and diluted.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic view of the structure of an anti-corrosion overflow weir provided by the present utility model;

FIG. 2 is a cross-sectional view of an anti-corrosion weir provided by the present utility model.

Description of the reference numerals

1-analytical column pipeline 2-impact surface

3-overflow weir case 4-shunt tank

5-particle ceramic lining board

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

In the present utility model, unless otherwise indicated, the terms "top, bottom, inner, outer" and the like are used to denote orientations of the term in conventional use or are commonly understood by those skilled in the art, and are not to be construed as limiting the term.

Referring to fig. 1 and 2, the utility model provides an anti-corrosion overflow weir, which comprises an overflow weir housing 3 and a granular ceramic lining plate 5 which is enclosed and stuck on the inner wall of the overflow weir housing 3, wherein the top end of the overflow weir housing 3 is connected with a resolving tower pipeline 1, and the bottom end is connected with a diversion trench 4.

In the present embodiment, a cavity is preferably formed between the particulate ceramic lining 5 and the impact surface 2 to cope with the acid gas flowing out of the tower tube 1.

In order to improve the sealing property and stability after the pipe connection, it is preferable that the top end surface of the overflow weir housing 3 is formed with a sealing surface capable of mating with the tower pipe 1.

In order to facilitate quick attachment and detachment during maintenance of the anti-corrosion weir, it is preferable that the weir housing 3 is detachably fixed to the tower pipe 1.

Likewise, it is preferable that the bottom surface of the weir housing 3 is formed with a sealing surface capable of mating with the diversion trench 4, and that the weir housing 3 is detachably fixed to the tower pipe 1.

The detachable connection mode may be any connection mode which is common in the art and can realize quick assembly and disassembly, but from the aspects of convenient production and processing of the connecting piece and simplified assembly and disassembly operation, the detachable fixedly connection mode is preferably a bolt connection mode.

In addition, in order to make stability after bolting better, sealing performance is better, it is preferable that the bolts be plural and the plural bolts be arranged at uniform intervals in the circumferential direction.

By the above-described means, the granular ceramic lining plate 5 is stuck around the inner wall of the weir housing 3 to cope with corrosion of the acid gas from the analysis tower pipe 1. By adopting the structure, the acid gas firstly impacts the impact surface 2 in the center of the overflow weir to play a role of buffering; and then flows into the lower diversion groove 4 along the gaps around the overflow weir housing 3, and enters the next process after being cooled and diluted. Thus, the whole device has low reconstruction cost, and the used materials only need ceramic particles. As palladium alloy is expensive, the coating cost of the inner wall of the overflow weir is extremely high, and ceramic has the characteristics of high temperature resistance, corrosion resistance, abrasion resistance and the like, and the corrosion resistance of the ceramic is adopted for the inner wall, the condition that equipment is damaged and scrapped due to the abrasion and corrosion of the carbon steel of the equipment shell is overcome. Meanwhile, the whole manufacturing is simple, ceramic particles are only required to be stuck along the inner wall of the overflow weir, and the operation and maintenance are easy.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims

1. The anti-corrosion overflow weir is characterized by comprising an overflow weir shell (3) and a granular ceramic lining plate (5) which is arranged around and adhered to the inner wall of the overflow weir shell (3), wherein the top end of the overflow weir shell (3) is connected with a resolving tower pipeline (1), and the bottom end of the overflow weir is connected with a diversion groove (4).

2. The anti-corrosion overflow weir according to claim 1, wherein a cavity is formed between the particulate ceramic lining (5) and the impingement surface (2) for handling acid gases flowing out of the analytical tower conduit (1).

3. The anti-corrosion overflow weir according to claim 1, wherein the top end of the overflow weir housing (3) forms a sealing surface capable of mating with the analytical tower conduit (1).

4. The anti-corrosion overflow weir according to claim 2, wherein the overflow weir housing (3) is detachably affixed to the analytical tower conduit (1).

5. The anti-corrosion overflow weir according to claim 1, wherein the bottom end of the weir housing (3) forms a sealing surface capable of mating with the shunt grooves (4).

6. The anti-corrosion overflow weir according to claim 5 wherein the weir housing (3) is removably affixed to the analytical tower conduit (1).

7. The anti-corrosion overflow weir according to claim 4 or 6 wherein the removable securement is a bolted connection.

8. The anti-corrosion overflow weir according to claim 7 wherein the bolts are a plurality and the plurality of bolts are evenly spaced in the circumferential direction.