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Mineral slurry conveying high-abrasion-resistance anticorrosive composite pipe for wet desulphurization and preparation

A wet desulfurization and corrosion-resistant technology, applied in the field of transportation pipelines

Active Publication Date: 2018-08-03
LANGFANG DEYUAN BUILDING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high wear-resistant and corrosion-resistant composite pipe for mineral slurry transportation for wet desulfurization and its preparation method, which not only solves the high wear-resistant and corrosion-resistant requirements of mineral slurry transportation for pipelines, but also achieves The pressure, strength and durability requirements that must be met; and the composite pipe is co-extruded during the production process, as an organic whole without any shedding, preventing the possibility of clogging the pipe; in addition, the composite pipe The price is more reasonable, the quality is light, the installation and construction are more convenient, and a lot of installation and maintenance costs are saved; the composite pipe of the present invention is an environmentally friendly product, without any VOC emissions and precipitation of harmful substances, and does not cause any harm to the natural environment and production technicians. influences

Method used

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  • Mineral slurry conveying high-abrasion-resistance anticorrosive composite pipe for wet desulphurization and preparation
  • Mineral slurry conveying high-abrasion-resistance anticorrosive composite pipe for wet desulphurization and preparation

Examples

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Effect test

Embodiment 1

[0038] 1. The high-strength adhesive A is a hot-melt adhesive with a copolymer as the matrix material corresponding to the inner layer (1) and the high-impact layer (3) and simultaneously producing a good bonding effect.

[0039] High-strength adhesive B is a technology that has been published in a Chinese patent application, and the application number is 201511000579.2. Its composition of raw material mass parts: PPR50-80; POE (ethylene-octene copolymer) 10-30; epoxy resin 1-5; dicumyl peroxide (DCP) 0.08-0.25; maleic anhydride 1-3 ; Oligomeric silsesquioxane (POSS) 0.5-2; Petroleum resin 3-8; Other additives 5-10.

[0040] Preparation includes the following steps:

[0041] (1) Dehumidification and drying of raw materials

[0042] When producing the special hot-melt adhesive of the present invention, it is necessary to ensure that the raw materials are dry; for PPR, POE (ethylene-octene copolymer), epoxy resin, petroleum resin, vacuum dehumidification is adopted, the temper...

Embodiment 2

[0082] Same as Example 1, except that the inner layer (1) of the high wear-resistant and corrosion-resistant material is made of high wear-resistant ultra-high molecular weight polyethylene UHMWPE, and the high-strength adhesive layer A (2) is made of HDPE as the base material Graft copolymer hot melt adhesive, airtight anti-leakage high-impact layer (3) adopts polybutene PB to form a composite inner core pipe together.

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Abstract

The invention discloses a mineral slurry conveying high-abrasion-resistance anticorrosive composite pipe for wet desulphurization and preparation, and belongs to the technical field of conveying pipeline. The pipe comprises a composite inner core pipe jointly formed by a high-abrasion-resistance anticorrosive material inner layer, a high-strength bonding agent layer A and an airtight anti-seepagehigh-shock-resistance layer from inside to outside in sequence. A framework reinforcement layer formed by a high-strength steel wire mesh or a steel rope net or a fibermesh framework and a high-strength bonding agent B is arranged on the outer layer of the composite inner core pipe. A high-strength bonding agent layer B is arranged on the outer layer of the framework reinforcement layer. The high-strength bonding agent layer B and a protection material layer jointly form an outer protection layer of the composite pipe. According to a preparation method, the composite inner core pipe is prepared through a coextruding method. The composite pipe belongs to environment-friendly products, any VOC emission and harmful substance precipitation are avoided, and any influence on the natural environment and production technicians is avoided.

Description

technical field [0001] The invention belongs to the technical field of transportation pipelines, and in particular relates to a mineral slurry transportation high wear-resistant and corrosion-resistant composite pipe for wet desulfurization and its preparation. Background technique [0002] The mineral slurry produced by the wet desulfurization process of thermal power plants or cement factories mainly contains sulfite, sulfate, nitrate, carbonate and their acid, alkali and other mixtures. People have always used metal pipes and non-metal pipes to transport. This kind of mineral slurry mixture such as sulfate is extremely corrosive to metal materials, and at the same time, it wears heavily on metal pipes during the transportation process, which greatly affects the service time and life of the transportation pipeline, and has to be frequently Replacing or repairing the pipeline increases the production cost and workload, and sometimes affects the normal operation of the equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/147F16L57/02F16L58/10F16L57/06B29D23/00B29C47/20B29C48/32
CPCB29C48/09B29C48/30B29C48/32B29D23/001F16L9/147F16L57/02F16L57/06F16L58/1009
Inventor 廖延君王星杰胡琴周江祥
Owner LANGFANG DEYUAN BUILDING MATERIALS CO LTD
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