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Glass fiber reinforced plastic flue gas jetting pipe used in desulphurization technology, and manufacturing method thereof

A desulfurization process, FRP technology, applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve problems such as poor corrosion resistance to chloride ions, high engineering cost, and low resin content in structural layers, so as to ensure anti-fatigue performance, increase the content of resin, and ensure the effect of corrosion resistance

Active Publication Date: 2012-05-16
BAOSHAN IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the materials used to make jet bubbling desulfurization flue gas injection pipes mainly include 316L stainless steel, C276 alloy steel, PP or glass steel; 316L stainless steel has a short service life due to its poor resistance to chloride ion corrosion; C276 flue gas injection pipe performance It is excellent, but its price is expensive and the project cost is large; PP is easy to deform due to its poor temperature resistance, and it must be bonded with the desulfurization absorption tower partition with flanges, which is relatively expensive and requires a large amount of engineering; compared with the above three FRP material has the characteristics of strong corrosion resistance, light weight, high strength, convenient on-site installation, etc., and is suitable for making desulfurization flue gas injection pipes
[0003] Generally, FRP pipes are made by mechanical winding. For example, the spray pipe usually uses glass fiber yarn or polyester yarn winding process to make the structural layer of the spray pipe. Compared with the hand lay-up process, the winding has higher fiber content and void ratio than the hand lay-up process. It is low in strength and high in strength, but it has the disadvantages of low resin content in the structural layer and poor axial rigidity. If the flue gas injection pipe is made by this method, it may cause fouling on the inner wall of the pipe and near the gas injection hole, and the fatigue resistance of the injection pipe is relatively poor. Difference

Method used

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  • Glass fiber reinforced plastic flue gas jetting pipe used in desulphurization technology, and manufacturing method thereof
  • Glass fiber reinforced plastic flue gas jetting pipe used in desulphurization technology, and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Mold preparation: select the outer diameter of the mold to be the same as the inner diameter of the air nozzle, both being 200 mm, clean the surface of the mold, control its surface roughness to 0.8 μm, and the slope of the diameter at both ends of the mold to be 1:1000. Then apply release wax evenly on the surface of the mold for 2 times, and install the mold on the winding machine.

[0037] (2) Making the inner anti-corrosion layer: the innermost layer uses 30g / m 2 One layer of glass fiber surface felt, and then use two layers of 450g / m 2 Chopped glass fiber felt; Weigh 10kg of bisphenol A vinyl resin, add 0.5Kg of 300-mesh silicon carbide wear-resistant filler to the resin, add 200g of conductive carbon powder, stir well, and then add cobalt ion content Be 0.6wt% 2wt% promotor (promptly add 200g promotor in 10Kg resin), stir evenly, dress with small container before use, add active oxygen content in small container and be 2.5wt of ketone peroxide solidifying age...

Embodiment 2

[0044] (1) Mold preparation: select the outer diameter of the mold to be the same as the inner diameter of the air nozzle, both being 200 mm, clean the surface of the mold, control its surface roughness to 0.8 μm, and the slope of the diameter at both ends of the mold to be 1:1000. Then apply release wax evenly on the surface of the mold for 2 times, and install the mold on the winding machine.

[0045] (2) Making the inner anti-corrosion layer: the innermost layer uses 30g / m 2 One layer of glass fiber surface felt, and then use two layers of 450g / m 2 Chopped glass fiber felt; Weigh 10kg of bisphenol A vinyl resin, add 0.2Kg of 300 mesh silicon carbide wear-resistant filler to the resin, add 100g of conductive carbon powder, stir well, and then add cobalt ion content Be 0.6wt% 2wt% promotor (promptly add 200g promotor in 10Kg resin), stir evenly, dress with small container before use, add active oxygen content in small container and be 1.5wt of ketone peroxide curing agent 10...

Embodiment 3

[0052] (1) Mold preparation: select the outer diameter of the mold to be the same as the inner diameter of the air nozzle, both being 200 mm, clean the surface of the mold, control its surface roughness to 0.8 μm, and the slope of the diameter at both ends of the mold to be 1:1000. Then apply release wax evenly on the surface of the mold for 2 times, and install the mold on the winding machine.

[0053] (2) Making the inner anti-corrosion layer: the innermost layer uses 30g / m 2 One layer of glass fiber surface felt, and then use two layers of 450g / m 2 Chopped glass fiber felt; weigh 10kg of phenolic epoxy vinyl resin, add 0.8Kg of 300 purpose silicon carbide wear-resistant fillers in the resin, add 180g conductive carbon powder, fully stir, then add cobalt ion content wherein The accelerator of 2wt% of 0.6wt% (promptly adds 200g accelerator in 10Kg resin), stirs evenly, dresses up with small container before use, adds the ketone peroxide solidifying agent 2.5wt% that active o...

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Abstract

The invention discloses a glass fiber reinforced plastic flue gas jetting pipe used in a desulphurization technology. The glass fiber reinforced plastic flue gas jetting pipe comprises components of, from the inner side to the outer side: an inner antiseptic layer, a resin-rich structural layer, and an outer antiseptic layer. The inner antiseptic layer comprises a glass fiber surface felt layer and a glass fiber chopped strand felt layer manufactured from pasted oxirene-based resin. Oxirene-based resin takes 70-80wt% of the inner antiseptic layer. According to the weight of oxirene-based resin, 1-10% of silicon carbide and 1-2% of conductive carbon powder are mixed in oxirene-based resin. The resin-rich structural layer comprises normal thickness sections and thickened sections arranged along an axial direction of the jetting pipe. The thickened sections are arranged at connection positions between the glass fiber reinforced plastic flue gas jetting pipe and a separating plate, and between the glass fiber reinforced plastic flue gas jetting pipe and a grate. The resin-rich structural layer comprises alternately paved glass fiber check cloth layers and glass fiber chopped strand felt layers. The surfaces of the glass fiber check cloth layers and glass fiber chopped strand felt layers are pasted by using oxirene-based resin. Oxirene-based resin takes 55-70wt% of the resin-rich structural layer. Correspondingly, the invention provides a manufacturing method of the glass fiber reinforced plastic flue gas jetting pipe used in the desulphurization technology.

Description

technical field [0001] The invention relates to a glass steel pipe and a manufacturing method thereof, in particular to a glass steel pipe used in a desulfurization process and a manufacturing method thereof. Background technique [0002] The raw flue gas of the jet bubbling type desulfurization absorption tower is evenly diffused into the slurry through the injection of the injection pipe immersed in the slurry liquid, and the SO2 is completed in the slurry. 2 absorption and removal. At present, the materials used to make jet bubbling desulfurization flue gas injection pipes mainly include 316L stainless steel, C276 alloy steel, PP or glass steel; 316L stainless steel has a short service life due to its poor resistance to chloride ion corrosion; C276 flue gas injection pipe performance It is excellent, but its price is expensive and the project cost is large; PP is easy to deform due to its poor temperature resistance, and it must be bonded to the desulfurization absorptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50
Inventor 王如意沈晓林储开明佘玉根刘道清石磊
Owner BAOSHAN IRON & STEEL CO LTD
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