2016 held recently in Qingdao, Shandong province, China on eco-textile environmental protection science and technology annual meeting, Deputy Wang Baosheng, Director of the Professional Committee of China Textile Engineering Institute of environmental protection to journalists, the textile printing and dyeing industrial atmospheric pollutant emission standard (hereinafter referred to as the standard) is expected to be released this year.
"Textile emissions more subtle and more difficult to monitor. Due to the lack of specific, targeted standards, textile waste processing and monitoring technology is still blank. "Wang Baosheng said our country is organizing experts in the preparation of the standards, he also participated in the development have been investigated in Guangdong, Fujian, Zhejiang, Jiangsu, Shandong and other places of hundreds of companies.
"To meet the requirements of pending national standards, enterprises must be upgraded from equipment improvements and technology, and improve the level of management, effective control of pollution of the atmospheric environment in textile industry. "Wang Baosheng believes that this will definitely improve the environmental cost of textile printing and dyeing enterprises, enterprises will enter a new round of reshuffle.
Huge potential for consumption of heat setting machine
It is understood that the large industrial VOCs emissions by sources involved in the industry, the current lack of authoritative recognition of emission inventories, in which dye is one of the key industries in the industrial source.
"Printing and dyeing industry, energy consumption, heavy pollution. Printing and dyeing industry is often in the form of hot gas mixture of gaseous pollutants emissions, emission source is recognized in heat setting machine. "Wang Baosheng described to reporters, emissions from the heat-setting machine with high temperature (120 ¡æ ~170 ¡æ) and pollution (complex) properties, and in the textile printing and dyeing industrial emissions account for relatively large. Statistics show that, as energy-intensive processes, domestic energy efficiency of the drying process is about 40%~50% (molding machine energy consumption of about 35%), but advanced level of 70%, therefore, machine energy consumption also has the potential to be tapped.
According to reports, in 2008, the national development and Reform Commission issued expressly in the dyeing and finishing industry access, training (stretching drying) equipment must have the main process parameters such as temperature, humidity measurement and control devices, exhaust gas cleaning and heat recovery unit, box outer layer has good thermal insulation properties.
"Emissions of VOCs pollution in printing and dyeing industry types and composition of complex, its ingredients seem to be no detailed study, but contains sour gas, General organic and odor gases is certain. "Wang Baosheng, setting machine tail gas treatment is the key to industrial air pollution in printing and dyeing industry, it has become the consensus. In the standard formulation of indicators relating VOCs increases.
Wang Baosheng said emissions from printing and dyeing wastewater treatment process, especially in front of the sewage treatment process, a lot of odor emissions will affect the environment, harm to nearby residents. Therefore, in this standard, has also increased in the development of relevant indicators.
Waste gas Government engineering research and development needed to strengthen
Insiders predicted that future national level will also introduce more stringent air pollution prevention and control plan, now's policy is only to "prologue", the State of the environmental policy of "combined", will undoubtedly promote the further development of energy saving and emission reduction and clean production in printing and dyeing industry.
"But for now, there is one thing no one did, companies are not independent to do, suggest that the Government or industry, printing and dyeing industrial emission studies of the composition and content of public projects, so as to target the most appropriate printing waste gas treatment technology. "Wang Baosheng believe that, faced with the imminent release of the standard, it is urgent to strengthen the emission control technologies research and development reserve and the promotion of evaluation.
Currently, some provinces have introduced emission standards of air pollutants. More stringent local standards, when Zhejiang province's emission standard of air pollutants for dyeing and finishing of the textile industry. In addition to production facilities outside of reasonable measures should be taken, not dilute emissions and fugitive emission control and have put forward specific requirements such as air pollution control equipment.
It is understood that the China Textile Engineering Institute Organization experts, after many years of research and experiments, have been designed to create an intelligent machine waste heat recovery and treatment systems, and successful application of Pacific printing and dyeing enterprises in Guangdong. "
Typically, setting machine emissions directly, namely, exhaust gases loaded with calories, which go into the atmosphere, but this system through the heat exchanger, to convert heat from the hot gas hot water recycling, can have considerable economic value. "Wang Baosheng revealed that run from the current actual situation, a system of more than 400,000 Yuan on average, recycled approximately 44,000 yuan a month, deducting the cost of equipment running 7442 Yuan/month, in the case of nothing waste oil recovery, more than a year to recover equipment costs