CN209908550U

CN209908550U - Low concentration gas oxidation treatment is with rust-resistant wind channel

Info

Publication number: CN209908550U
Application number: CN201822262184.5U
Authority: CN
Inventors: 陶泉; 王买旗; 张健
Original assignee: Jubangsen (tianjin) Energy Technology Co Ltd
Current assignee: Jubangsen (tianjin) Energy Technology Co Ltd
Priority date: 2018-12-30
Filing date: 2018-12-30
Publication date: 2020-01-07
Anticipated expiration: 2028-12-30

Abstract

The utility model provides a low concentration gas oxidation treatment is with rust-resistant wind channel, including steel pipe, carbon nature coating, iron-containing coating and overcoat shell, the coating of iron-containing coating is on the steel pipe inner wall, and the coating of carbon nature coating is in iron-containing coating inner circle, and the overcoat shell cup joints on steel pipe outer wall, and carbon nature coating and iron-containing coating are rust-resistant paint vehicle, contain 8% ~ 15% carbon dust in the carbon nature coating, contain 35% ~ 45% ferrous oxide powder in the iron-containing coating, the utility model has the advantages of improve wind channel rust resistance.

Description

Low concentration gas oxidation treatment is with rust-resistant wind channel

Technical Field

The utility model relates to a mine equipment field, specifically speaking relates to a rust-resistant wind channel is used in low concentration gas oxidation treatment.

Background

At present, with the application of a coal mine ventilation gas oxidation device, the following defects or shortcomings of an air duct are found: the ventilation gas has high humidity and contains a small amount of corrosive gas such as sulfide, and the metal surfaces of parts of the air duct shell, such as a frame, which are contacted with the ventilation gas, are seriously corroded, so that great disadvantages are brought to the operation and the service life of an oxidation device; by adopting a better paint spraying process and high-quality antirust paint, the manufacturing cost of the oxidation device is increased, and the effective period of the antirust measure cannot be matched with the service life of the oxidation device which is designed for more than 10 years; the re-painting rust prevention on the use site is impossible, the rust prevention effect is not good, only the air duct shell parts can be updated, and as a result, the cost is high, the maintenance period is long, and the workload is large.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model aims to provide an antirust air duct for the oxidation treatment of low-concentration gas, which overcomes the defects in the prior art.

In order to realize above-mentioned purpose, the utility model provides a low concentration gas oxidation treatment is with rust-resistant wind channel, including steel pipe, carbon nature coating, iron-containing coating and overcoat shell, the coating of iron-containing coating is on the steel pipe inner wall, and the coating of carbon nature coating is in iron-containing coating inner circle, and the overcoat shell cup joints on the steel pipe outer wall, and carbon nature coating and iron-containing coating are rust-resistant paint vehicle, contain 8% ~ 15% carbon dust in the carbon nature coating, contain 35% ~ 45% ferrous oxide powder in the iron-containing coating.

By adopting the technical scheme, the chemical stability of the carbon powder can be utilized to prevent the sulfuration gas from reacting with the steel pipe to corrode the steel pipe, even if the carbon coating is stripped in the gas flowing process and the iron-containing coating is contacted with the gas, the iron powder in the iron-containing coating reacts with the sulfur element in the sulfuration gas, the sulfuration gas is further prevented from reacting with the steel pipe, and the corrosion resistance of the steel pipe is improved.

As a further explanation of the present invention, preferably, the outer casing inner wall is separated by a plurality of support rods, so that an empty shell is formed between the outer wall of the steel pipe and the outer casing inner wall.

Through adopting above-mentioned technical scheme, set up the outer shell and reduce the erosion of external humid air to the steel pipe, set up the shell simultaneously and reduce the impact of external solid to the steel pipe, make the difficult atress deformation of steel pipe, improve the life of steel pipe.

As to the utility model discloses a further explanation, preferably, the outer slip coat outer plug-in has the injection syringe, and the injection syringe stretches into in the shell with the shell intercommunication, leads to cement thick liquid in the injection syringe to be full of cement in the shell.

By adopting the technical scheme, in order to reduce the probability of gas leakage caused by the occurrence of cracks on the steel pipe, cement can be injected into the hollow shell, the steel pipe is covered by the cement, the gas leakage is further avoided, and the safety of the air channel is improved.

The utility model discloses following beneficial effect has:

1. the utility model carries out double-layer protection to the steel pipe by arranging the carbon coating and the iron-containing coating on the inner wall of the steel pipe, thereby avoiding corrosion;

2. the influence of the external environment on the steel pipe is reduced by arranging the outer shell, and the service life of the steel pipe is prolonged;

3. by injecting cement into the hollow shell, the sealing performance of the steel pipe is further improved, and gas leakage is avoided.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Description of reference numerals:

1. a steel pipe; 2. a carbon-based coating; 3. an iron-containing coating; 4. an outer casing; 41. a strut; 42. empty shell; 43. and (4) injecting a tube.

Detailed Description

In order to further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention.

An anti-rust air duct for low-concentration gas oxidation treatment is shown in figure 1 and comprises a steel pipe 1, a carbon coating 2, an iron-containing coating 3 and an outer casing 4, wherein the iron-containing coating 3 is coated on the inner wall of the steel pipe 1, the carbon coating 2 is coated in an inner ring of the iron-containing coating 3, the outer casing 4 is sleeved on the outer wall of the steel pipe 1, the carbon coating 2 and the iron-containing coating 3 are anti-rust paint, the carbon coating 2 contains 8% -15% of carbon powder, and the iron coating 3 contains 35% -45% of ferrous oxide powder.

As shown in fig. 1, the chemical stability of the carbon powder can prevent the sulfuration gas from reacting with the steel pipe 1 to corrode the steel pipe 1, even if the carbon coating is peeled off in the gas flowing process, the iron-containing coating 3 contacts with the gas, and at the moment, the iron powder in the iron-containing coating 3 reacts with the sulfur element in the sulfuration gas to form an inert substance, so that the inert substance becomes a protective film, the sulfuration gas is further prevented from reacting with the steel pipe 1, and the corrosion resistance of the steel pipe 1 is improved.

As shown in figure 1, a plurality of supporting rods 41 are arranged on the inner wall of the outer casing 4 at intervals so as to form an empty casing 42 between the outer wall of the steel pipe 1 and the inner wall of the outer casing 4, the outer casing 4 is arranged to reduce the erosion of external humid air on the steel pipe 1, meanwhile, the empty casing 42 is arranged to reduce the impact of external solids on the steel pipe 1, so that the steel pipe 1 is not easy to deform under stress, the service life of the steel pipe 1 is prolonged, an injection pipe 43 is externally inserted into the outer casing 4, the injection pipe 43 extends into the empty casing 42 and is communicated with the empty casing 42, cement slurry is injected into the injection pipe 43 so that the empty casing 42 is filled with cement, the injection pipe 43 can be pulled out of the outer casing 4, in order to reduce the probability that gas leaks out due to cracks appearing in the steel pipe 1, cement can be injected into the empty casing 42 to cover the steel.

It should be noted that the above mentioned embodiments and embodiments are intended to demonstrate the practical application of the technical solution provided by the present invention, and should not be interpreted as limiting the scope of the present invention. Various modifications, equivalent substitutions and improvements will occur to those skilled in the art and are intended to be within the spirit and scope of the present invention. The protection scope of the present invention is subject to the appended claims.

Claims

1. An anti-rust air duct for low-concentration gas oxidation treatment is characterized by comprising a steel pipe (1), a carbon coating (2), an iron-containing coating (3) and an outer casing (4), wherein the iron-containing coating (3) is coated on the inner wall of the steel pipe (1), the carbon coating (2) is coated in the inner ring of the iron-containing coating (3), the outer casing (4) is sleeved on the outer wall of the steel pipe (1),

the carbon coating (2) and the iron-containing coating (3) are both antirust paint.

2. The rust-proof air duct for the oxidation treatment of low-concentration gas as claimed in claim 1, wherein a plurality of support rods (41) are spaced from the inner wall of the outer casing (4) to form a hollow shell (42) between the outer wall of the steel pipe (1) and the inner wall of the outer casing (4).

3. The rust-proof air duct for the oxidation treatment of the low-concentration gas as claimed in claim 2, wherein an injection pipe (43) is externally inserted into the outer casing (4), the injection pipe (43) extends into the hollow casing (42) to communicate with the hollow casing (42), and cement slurry is filled in the injection pipe (43) to fill the hollow casing (42) with the cement.