Introduction to modern non-excavation pipe laying technology Modern non-excavation pipe laying technology refers to the use of geotechnical guidance, directional drilling and other means to lay, replace or repair various underground pipelines without digging trenches. technology.
1. Product introduction
Coal Columnar Activated Carbon with high quality anthracite as raw material, its appearance is generally black cylindrical Activated Carbon. Generally by powder materials and binder by kneading, extrusion molding by carbonization and activation processes, has developed pore structure, large surface area, strong adsorption capacity, high mechanical strength, easy to regeneration and low cost. The coal column activated carbon has excellent and broad development prospects in the future market.
2. Application
Column activated carbon is widely used in industry and agriculture, such as petrochemical industry CAUSTIC-FREE (refined mercaptan), ethylene desalted water (refined filler), catalyst (palladium, platinum, rhodium, etc.), water purification and sewage treatment; water treatment and protection in electric power industry; governance, waste gas and harmful gas purification in environmental protection industry; chemical catalyst and carrier, gas purification, solvent recovery and oil decolorization, refining in chemical industry.
3. Adsorption purification principle and process
a. Activated carbon widely used in city drinking water advanced purification and sewage treatment, removing more than chloride, deodorization; high pure water purification materials, advanced artificial mineral production raw materials; large-scale boiler removed the COD and other harmful impurities, which can improve the boiler efficiency and prolong the service life of the boiler; it also can effectively remove the COD of water, pigment, odor and other toxic. Large Granular Activated Carbon can fill the filter and purify the air.
b. Activated carbon widely used in industrial waste-water treatment, effectively deodorization, effectively remove harmful substances to improve water quality. Most powdered activated carbon used for sewage treatment sometimes used for granular activated carbon. Generally activated carbon used in water treatment, the surface area is not too large, but the transition pore has more and larger average pore size.
The technology has significant social and economic benefits, especially in areas where excavation operations cannot be carried out, such as crossing roads, railways, buildings, rivers, historic sites, downtown areas, crops and vegetation reserves. This technology is now widely used in engineering departments such as gas, telecommunications and power.
Modern non-excavation underground pipeline construction methods have appeared in large numbers since the 1970s, including: horizontally guided drilling, horizontal directional drilling, horizontally controlled auger, impact spear, pipe hammer, micro-tracking, Old pipe replacement and repair, pipe jacking machine, etc.
Non-excavation technology not only reduces road excavation, reduces construction costs and solves some problems that cannot be constructed in traditional excavation, but also repairs old pipelines and difficult installations; in West-East Gas Transmission and Guangdong LNG Projects Large-scale pipeline network laying; natural gas as a universal use of clean and environmentally friendly energy, in the natural gas replacement project; to ensure that the supply of gas to customers does not significantly interrupt, and when installing zone pressure regulating valves and pipelines; After the completion of the network, if you need to update the old gas pipeline, it has a considerable advantage.
The non-excavation technology replaces the civil construction (the trenching method), which not only advances the gas construction technology, but also reflects the rapid development of construction technology and technological modernization.
Non-excavation works | Non-excavation construction
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