According to GB/T11835-2007 " heat insulation reachs its goods with cliff cotton, mineral wool " standard, the level of surface of exterior quality requirement that sets conduit insulation material, the problem; eccentricity such as the bruise that does not allow occurrence influence later period to use, smear, damaged should not be more than 10%; normally for, structure of heat-insulating material of heat preservation of heat addition conduit basically includes tube wall anticorrosive layer, intermediate heat-insulation layer and outer covering layer 3 parts. While because of heat addition conduit is enduring in-house medium to corrode, still can be corroded by exterior element, wait for environmental element like atmosphere, soil, weather, ministry of inside and outside is double corrode not only conduit of meeting influence heat addition moves normally, still lower the service life of system of heat addition pipeline greatly, so the design dispute of anticorrosive layer often wants. Usually, different anticorrosive layer material applies to different ambient conditions. For example coating of petroleum pitch coating, annulus oxygen coal tar pitch, agree with to bury ground conduit or be in charge of chlorinated rubber of channel conduit; polyethylene of preservative coating, chloric sulphonating is anticorrosive coating, apply to colophony of;TO of the cop on the ground commonly anticorrosive and waterproof coating, what can be used at burying ground conduit already is anticorrosive, the; of conduit of built on stilts that also applies to solar illuminate and polyurethane coating applies extensively at oil (gas) , the protection of the steel structure below storage tank and ocean environment. Heat-insulation layer is the main body part of structure of heat preservation heat-insulating material, also be implementation heat preservation, adiabatic crucial link. Heat-insulating material of heat preservation of conduit of fiber of blast furnace broken bits, it is had qualitative light, coefficient of thermal conductivity the characteristic such as the mechanical strength with have small, particular, basically apply to conduit of built on stilts, use at ground channel conduit, need has made waterproof step. The main effect of covering layer is outside after when preventing heat-insulation layer to be pounded by exterior machinery, be being destroyed, outside moisture invades heat-insulation layer, reduce heat preservation heat proof quality, return the effect that can have beautification conduit at the same time. Covering layer basically has metallic covering layer and felt mercery stuff two kinds. Structure of metallic covering layer is beautiful, simple, but cost is high, and be corroded easily by outside ambient, multi-purpose at the conduit on the ground, for example galvanization iron sheet, aluminium alloy board, common armor plate. Felt mercery covering layer is the stuff with good waterproof properties more, wait like asphalt felt of spun glass cloth, bitumen, facilitating construction, but not beautiful, multi-purpose at be in charge of channel conduit. The production methods of insulation material can divide the conduit of fiber of broken bits of industrial preparation blast furnace of insulation material of conduit of fiber of blast furnace broken bits to be mixed for dry method wet. Production working a way is it is main raw material with wet colophony cotton, via coiling the treatment of canal, absorb, surface, insulation material that takes off the working procedure such as core, cut to make different internal diameter and ply. Wet it is with cliff cotton is basic raw material, classics impregnation, shape, drawing of patterns, solidify and the heat preservation envelope that makes internal diameter and deepness. Differ as a result of adoption technology, the production of insulation material divides cotton of dry method cliff to make a valve for half mechanization again law and full automatic the law that make a valve. The great majority in home is medium or small mineral wool factory, use half mechanization generally to make tubal way, its are main the characteristic is labor intensity big, installation cost is little. Main process is as follows: 1) raw material prepares gush to the fiber of colophony cohere agent sends expansion chamber, below the action of air exhauster, sedimentation felt of wet colophony cotton is formed on conveyer, from the felt of cotton of exit reel-up wet colophony of expansion chamber, felt coils diametical control is in 500~700mm. The content limits of cohere agent is 0.9%~3% , contain wet quantity to be 2%~3% . 2) makes a canal hang wet colophony lap on the frame that spread felt, by carry leather belt to roller type conveyer, conveyer tail contains the outfit that rip cotton, latter presses cotton felt beforehand and send 3 roller rolling machine, to going up at the same time roller brings to bear on the thickness that constant pressure provides with controlling heat preservation begins a canal, should coil to formulary ply , stop reel-up, conveyer also stops to offer cotton right now, at the same time cotton will be ripped, get off artificially tubal base. Conveyer and roll piping outfitting buy is driven by same electromotor, its speed should with roll the linear velocity that runs a course is synchronous. Generally speaking, set two to coil piping outfitting alliance, internal diameter of a production is 25? The; of canal of small-sized heat preservation of 100mm produces internal diameter another times to be the canal of large heat preservation of 100~300mm. The absorb of solidify intermittence type that 3) heat preservation is in charge of: By put tubal semifinished product on absorb car artificially, push solidify furnace to undertake solidify. Is solidify furnace long 12? 14m(inspects crop and decide) , can load 5~10 solidify furnace, intermittence is put exit. Continuous solidify: Solidify furnace grows 16~24m(to inspect crop and decide) the abnormity chain that one moves continuously, put tubal semifinished product artificially, carry output additionally. The treatment that 4) heat preservation provides and processing ask according to the user, undertake to the insulation material after solidify the surface burnishs and cut termination processing. But the canal of place Xiang all should undertake analyse seams processing, seaming can be neat seaming also can be a flight of stairs is seamed. Fireproof material occurrence craze, fall off, easy how to wear away to do? Want to solve a problem thoroughly, need to be dug from germ, the analysis gives real reason, flourish Cheng Naicai is engaged in be able to bear or endure service of timber production, research and development is old, can solve all sorts of difficulty problems of liner of furnace of high temperature kiln, welcome broad new old friend to seek advice reach technical communication.
Get Price
WhatsApp