CN201875360U

CN201875360U - Anticorrosive coating structure of flange used on desulfurizing absorption tower

Info

Publication number: CN201875360U
Application number: CN2010206870250U
Authority: CN
Inventors: 廖永华
Original assignee: CHENGDU LONGQUAN ANTI-CORROSION ENGINEERING CO LTD
Current assignee: Chengdu Longzhiquan Science & Technology Co., Ltd.
Priority date: 2010-12-29
Filing date: 2010-12-29
Publication date: 2011-06-22
Anticipated expiration: 2020-12-29

Abstract

The utility model discloses an anticorrosive coating structure of a flange used on a desulfurizing absorption tower, belonging to the technical field of corrosion prevention. The anticorrosive coating structure of a flange used on a desulfurizing absorption tower comprises a flange body (3), and the channel of the flange body (3) is internally sheathed with a fiber reinforced composite plastic inner spile (4). The anticorrosive coating structure of a flange used on a desulfurizing absorption tower is simple in structure, low in cost and construction difficulty, good in anticorrosive effect and wear-resisting property, long in service life, suitable for promotion with maintenance cost reduced, and capable of resisting against the washing out of size generated by desulfuration reaction, as well as against the corrosion of various acid liquors.

Description

The anti-corrosion layer structure of the flange that uses on a kind of desulfuration absorbing tower

Technical field

The utility model relates to a kind of anti-corrosion layer structure, the anti-corrosion layer structure of the flange that uses on particularly a kind of desulfuration absorbing tower.

Background technique

In China, a large amount of SO of the annual discharging of thermal power plant ₂, SO ₂Reaction and assemble in air, finally the form with acid rain causes serious pollution to environment, so country forces thermal power plant desulfurizer must be installed, to alleviate SO ₂Pollution on the environment.The nucleus equipment of desulfurizer is a desulfuration absorbing tower, desulfuration absorbing tower adds that by carbon steel structure rational anti-corrosion layer structure forms again, therefore select rational anti-corrosion layer structure very important, equally also influence the desulphurization cost of thermal power plant for the working life of desulfuration absorbing tower.Owing to contain a large amount of SO ₂Flue gas pass through from desulfuration absorbing tower; so whole desulfurizing tower inside is sour environment; the corrosion protective covering structure of carrying out desulfurizing tower inside just seems very important; if it is unreasonable that anti-corrosion layer structure is selected, corrosion protective covering does not play the protection buffer action, and acid solution is passed anti-corrosion layer structure and is penetrated into carbon steel shell; corrosion carbon steel shell and boring a hole; a large amount of acid liquor leakages go out the desulfurizing tower befouling environment, even cause desulfurizing tower not use, and entire power plant is shut down the serious consequence that can not generate electricity.

In the prior art, a kind of scheme is to adopt the C276 alloy sheets to do anticorrosive coat parcel flange, and it is effective, but cost is very high, and cost is very high, is unfavorable for the popularization of this anti-corrosion layer structure; Also having a kind of scheme is to do anticorrosive coat parcel flange with rubber plate, and its cost is higher, favorable anti-corrosion effect, but wear-resisting effect is bad, and behind the utilization 2-3, the phenomenon that rubber plate is washed away perforation is many, causes the maintenance expenses height; Also having a kind of scheme is to smear flange with the vinyl ester resin scale, and its cost is moderate, and difficulty of construction is big, operation inconvenience, and antiseptic effect is bad, and wear-resisting weak effect, uses about 1 year, and the phenomenon that anticorrosive coat is washed away perforation is many, its maintenance expenses height.

The model utility content

Goal of the invention of the present utility model is: at the problem of above-mentioned existence, provide the anti-corrosion layer structure of the flange that uses on a kind of simple in structure, with low cost, difficulty of construction is low, favorable anti-corrosion effect, wear-resisting property are good desulfuration absorbing tower.

The technical solution adopted in the utility model is as follows:

The anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model comprises flange body, is set with the fibre-reinforced plastics interpolation pipe in the passage of described flange body.

Owing to adopted said structure, described interpolation pipe is made by fibre-reinforced plastics, and be set in the passage of flange body, form anti-corrosion layer structure, can fully resist the corrosion of various acid solutions, and the washing away of the slurries that can fully resist desulphurization reaction and produced, and wear-resisting property is good, long service life, with low cost.

The anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model, one end of described fibre-reinforced plastics interpolation pipe is provided with chimb, one end face of described chimb and flange body is fitted, be fitted with inside liner on the other end of described flange body, be connected with the liner reinforced layer on the described inside liner, described inside liner and liner reinforced layer all are set on the fibre-reinforced plastics interpolation pipe.

Owing to adopted said structure; make and closely cooperate between the passage of fibre-reinforced plastics interpolation pipe and flange body; and inside liner and liner reinforced layer make that the position relation between fibre-reinforced plastics interpolation pipe and the flange body is fixing; has good sealing effect; the assurance acid solution is passed through in the fibre-reinforced plastics interpolation pipe fully, and flange body is had good protection effect.

The anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model, the thickness of described fibre-reinforced plastics interpolation pipe are 4.5mm～5.5mm.

Because having adopted said structure, the thickness of fibre-reinforced plastics interpolation pipe is 4.5mm～5.5mm, promptly anticorrosive coat thickness is 4.5mm～5.5mm, makes this anticorrosive coat meet the standard-required of country and industry.

The anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model, the thickness of described fibre-reinforced plastics interpolation pipe are 5mm.

Because having adopted said structure, the thickness of fibre-reinforced plastics interpolation pipe is 5mm, promptly anticorrosive coat thickness is 5mm, reasonably select the thickness of anticorrosive coat, thereby the passage that promptly can guarantee flange body is unimpeded, can have good antiseptic effect again, and the life-span is permanent.

In sum, owing to adopted technique scheme, the beneficial effects of the utility model are:

1. the anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model, simple in structure, with low cost, difficulty of construction is low;

2. the anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model, favorable anti-corrosion effect, wear-resisting property is good, and long service life has reduced maintenance cost, is fit to promote;

3. the anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model, the washing away of the slurries that can fully resist desulphurization reaction and produced, and can resist the corrosion of various acid solutions.

Description of drawings

Fig. 1 is the schematic representation of the anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model.

Mark among the figure: 1-liner reinforced layer, 2-inside liner, 3-flange body, 4-fibre-reinforced plastics interpolation pipe.

Embodiment

Below in conjunction with accompanying drawing, the utility model is done detailed explanation.

In order to make the purpose of this utility model, technological scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Embodiment 1 as shown in Figure 1, the anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model, comprise flange body 3, be set with fibre-reinforced plastics interpolation pipe 4 in the passage of described flange body 3, one end of described fibre-reinforced plastics interpolation pipe 4 is provided with chimb, one end face of described chimb and flange body 3 is fitted, be fitted with inside liner 2 on the other end of described flange body 3, be connected with liner reinforced layer 1 on the described inside liner 2, described inside liner 2 and liner reinforced layer 1 all are set on the fibre-reinforced plastics interpolation pipe 4, and the thickness of described fibre-reinforced plastics interpolation pipe 4 is 5mm.According to the standard of country and industry, the thickness that can select fibre-reinforced plastics interpolation pipe 4 is 4.5 mm～5.5mm.Described fibre-reinforced plastics is Fiberglass-Reinforced Plastics, is divided into glass fiber reinforced composite plastics (GFRP) according to the fiber difference that adopts, and carbon fiber strengthens composite plastic (CFRP), and boron fiber strengthens composite plastic etc.Make fibre-reinforced plastics interpolation pipe 4 have good anti-corrosive properties and wear resistance.The anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model and is compared as anticorrosive coat with the C276 alloy sheets, and corrosion-resistant suitable with wear resistance, expense is lower; With compare as anticorrosive coat with rubber layer, corrosion resistance is suitable, wear resistance is better, expense is lower.The anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model, by service test in Hancheng, Shaanxi power plant, Xinyu, Jiangxi power plant etc., its operate time has reached more than 2 years, no any phenomenon because of anticorrosive coat self structure problem generation corrosion leakage.Power plant has also avoided because of anticorrosive coat damages acid liquor leakage taking place, and causes environmental pollution problems, has reduced maintenance cost.

Embodiment 2 is similar to embodiment 1, its difference is: the thickness of fibre-reinforced plastics interpolation pipe 4 is 4.5 mm, this thickness is the minimum thickness of anticorrosive coat, thereby when guaranteeing that this anticorrosive coat meets the minimum requirements of NBS, can be anticorrosion to carrying out effectively.

Embodiment 3 and embodiment 1, embodiment 2 are similar, its difference is: the thickness of fibre-reinforced plastics interpolation pipe 4 is 5.5 mm, this thickness is the thickest degree of anticorrosive coat, thereby when guaranteeing that this anticorrosive coat meets request of national standard, can be anticorrosion to carrying out effectively.

The anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower of the present utility model, simple in structure, with low cost, difficulty of construction is low; Favorable anti-corrosion effect, wear-resisting property is good, and long service life has reduced maintenance cost, is fit to promote; Washing away of the slurries that can fully resist desulphurization reaction and produced, and can resist the corrosion of various acid solutions.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. the anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower comprises flange body (3), and its spy is: be set with fibre-reinforced plastics interpolation pipe (4) in the passage of described flange body (3).

2. the anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower as claimed in claim 1, its spy is: an end of described fibre-reinforced plastics interpolation pipe (4) is provided with chimb, one end face of described chimb and flange body (3) is fitted, be fitted with inside liner (2) on the other end of described flange body (3), be connected with liner reinforced layer (1) on the described inside liner (2), described inside liner (2) and liner reinforced layer (1) all are set on the fibre-reinforced plastics interpolation pipe (4).

3. the anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower as claimed in claim 1 or 2, its spy is: the thickness of described fibre-reinforced plastics interpolation pipe (4) is 4.5mm～5.5mm.

4. the anti-corrosion layer structure of the flange that uses on the desulfuration absorbing tower as claimed in claim 3, its spy is: the thickness of described fibre-reinforced plastics interpolation pipe (4) is 5mm.