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Pollution of waste gas of spin printing and dyeing needs beware of expert to appeal Li Jian of " of bright " standard

Published on:2014/2/11 13:21:38

Keyword:Printing and dyeing, textile, state, research, chemical fibber, fabric, polyester fibber, circumstance, finalize the design machine, the dress
Introduction:A few days ago, a controversy about origin of Beijing mist haze, the focus is centered in car tail gas to go up to the contributive rate of Pm2.5. Act...

A few days ago, a controversy about origin of Beijing mist haze, the focus is centered in car tail gas to go up to the contributive rate of Pm2.5. Actually, infection of waste gas of spin printing and dyeing also nots allow small gaze.

Science of material of institute of dress of director of Committee on Standard of environmental protection of federation of China environmental protection, Beijing learns courtyard associate professor with the project when Gong Yan is accepting reporter of daily of science and technology to interview, say: "Waste gas of industry of spin printing and dyeing also is ' contribution ' the large family of Pm2.5, but enough attention did not get since all along. " he points out, instantly was not aimed at the exhaust emission standard of industry of spin printing and dyeing technically, of the standard be short of break make the relevant off-gas treatment, technology that monitor is in vacant position almost. "Formulate publishs standard of exhaust emission of industry of spin printing and dyeing, accelerate spin off-gas treatment to follow research and development of the technology that monitor, extremely urgent. Extremely urgent..

Spin printing and dyeing contributes 8.8%vocs

" 2011, 2020 very content of infection of compasses sex control discharges detailed list analysis to follow forecast research to report " data shows, vocs(of course of study of printing and dyeing of statistical China spin is volatile 2008 organic compound) discharge capacity is occupied different 8.8% what origin Vocs discharges gross, the course of study that take work experiences the 30% above that Vocs discharges.

Vocs is air in exist generally and the be called by a joint name that forms content of a complex kind of organic infection, basically include alkyl hydrocarbon, olefin to wait for material with balmy hydrocarbon, normally these volatile gas below the state discharge the meeting after atmosphere is medium to form atmosphere to affect a source directly directly. In addition, vocs still can pass mixed actinic response, make grain thing 2 times organic gas collosol, become one of main source of Pm2.5.

"8.8% it is a quite large proportion, if can take a few relevant step in the fountainhead of infection, control the exhaust emission of industry of spin printing and dyeing, undoubted meeting brings significant improvement to ambient air quality. " Gong Yan points out.

Long-term since, the waste gas that industry of spin printing and dyeing discharges will at what produce craft or segment specificly is hard the problem of li Qing Dynasty. The scientific research group that Gong Yan leads undertook tracing to the source to this one problem, think waste gas of industry of spin printing and dyeing basically comes from two old point of view: It is the filature craft of chemical fibber, 2 it is textile working procedure is arranged after pre-treatment and functional sex.

It is with the filature craft of viscose fiber chemical fibber exemple, need makes raw material filature juice first, and need to join a large number of 2 vulcanization carbon in the experience of production filature fluid, because this filature is machined,experience can release the harmful gas material that gives priority to with sulfur of carbon of vulcanization hydrogen, 2 vulcanization, 2 oxidation.

Heat finalizes the design machine processing is textile pre-treatment craft is important one annulus. When heat finalizes the design, all sorts of dye auxiliary on textile, coating auxiliary can be released, because this is final,vent-pipe road junction can have a large number of Vocs(organic volatile) release. These organic gas advocate if a few formaldehyde, much benzene kind, balmy hydrocarbon kind wait for organic gas.

In experience is being arranged after textile function sex, waste gas basically comes from two link. Polyester fibber is dispersive in the craft of hot frit coloring of dye, high temperature brings about the dye sublimate of a few young members to come out for exhaust emission. Of cotton fabric avoid very hot, flame retardant arrange should pass bake link, because added a few chemical auxiliary, the aldehyde such as formaldehyde can appear when bake kind the phenomenon that gas releases with ammoniac gas.

Spin waste gas is superintended harder than liquid waste must technical level

All along of industry of spin printing and dyeing is traditional infection large family of China, produce a large number of liquid waste, waste gas every year. "Every manufacture 1000 grams clothing, need uses auxiliary of 779 grams chemistry, of the infection that brings from this can be imagined greatly. " Gong Yan tells daily of science and technology the reporter.

Be in early 1992, china is published and execute " spin catchs entire industry water to affect content to discharge a standard " , control industrial waste water of spin printing and dyeing strictly discharge. 2012, ministry of national environmental protection came true to edit to the first time of this standard, before the standard after editing is compared more strict, added content of a few infection to discharge with stylish be restricted to be worth.

What discharge a standard to form contrast with strict with each passing day liquid waste is, waste gas of spin printing and dyeing did not discharge a standard technically up to now. Gong Yan explains, relative to at the special sex of industry of spin printing and dyeing character, existing " atmosphere infection content discharges a standard integratedly " , " effluvial infection content discharges a standard " the index of place set is narrow, cannot cover spin waste gas completely to affect content sort.

"In fact, spin exhaust emission compares liquid waste more concealment, superintend harder also, because lack special, the standard of specific aim, many spin waste gas is basic and direct by exhaust canister perhaps organizes formal escape to come with notting have in atmosphere. " Gong Yan says frankly.

Inside course of study the expert's appeal falls, standard of technology of environmental protection of federation of classics China environmental protection studies professional committee applies for, " content of infection of air of industry of estate of spin printing and dyeing discharges a standard " be brought into metric system of national environmental protection edited 2013 in the project. Gong Yan is controller of group of this standard project.

Gong Yan thinks, publish standard of exhaust emission of industry of spin printing and dyeing, make spin enterprise undertake waste gas affects processing, guide an enterprise to undertake manufacturing the improvement of engineering technology, control this industry effectively to be opposite the infection of atmosphere environment, improve the ambient air quality of parcel area.

Accelerate spin waste gas to monitor, processing technology research and development

After air of industry of spin printing and dyeing affects content to discharge a standard to come on stage, how ensure a standard to fall to real point from technical level, it is Gong Yan all along the problem in consider.

The waste gas in the light of spin enterprise monitors instantly to basically adopt spot sampling bag to collect, bring back a lab to check an analysis. Look in Gong Yan , this kind of air collects mode cannot circumstance of exhaust emission of enterprise of comprehensive and real report, "Waste gas of on-line of need research and development monitors a system, state of exhaust emission of enterprise of spin of real time report " .

After exhaust emission standard comes on stage, in the standard strong tie falls, spin enterprise certainly will should enlarge waste gas to administer technical research and development, improve relevant production equipment to follow craft, discharge in order to reduce what atmosphere catchs thing. Gong Yan points out: "Waste gas of instantly home spin administers a technology to be in vacant position basically, should bear in consideration spin enterprise below the state of ability, accelerate research and development to give the waste gas with economic good applicability to administer a technology. Accelerate research and development to give the waste gas with economic good applicability to administer a technology..


Keyword:Printing and dyeing, textile, state, research, chemical fibber, fabric, polyester fibber, circumstance, finalize the design machine, the dress

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