On October 12, the "Keqiao 2020 National Printing and Dyeing Industry Energy Conservation and Environmental Protection Annual Conference" was held in Shaoxing, Zhejiang. This conference is co-hosted by the China Printing and Dyeing Industry Association and the Economic and Information Technology Bureau of Keqiao District, Shaoxing City. It focuses on the latest national environmental management policies, the latest global chemical management requirements and responses, high-efficiency and low-cost printing and dyeing wastewater treatment technology, high salt and high concentration Discussions were carried out on waste water source reduction technologies, advanced and applicable energy-saving emission reduction technologies and equipment.
The morning meeting was chaired by Chen Zhihua, President of China Printing and Dyeing Industry Association.
With the help of printing and dyeing clusters, in recent years, printing and dyeing enterprises in Keqiao District have carried out digital, intelligent, and clean transformation and upgrading while eliminating outdated production capacity on schedule; gradually applying automated batching systems, intelligent management systems, robots, water-less printing and dyeing, etc. A large number of high-end equipment, technology and technology.
As the host, Fang Youmei, deputy head of the People's Government of Keqiao District, Shaoxing City, stated in his speech that the printing and dyeing industry is an important aspect of the transformation and upgrading of Keqiao's traditional industries. How to improve quality and efficiency, become stronger and better, and achieve energy saving, emission reduction, and green development have always been the difficulties and obstacles restricting the healthy development of the printing and dyeing industry. She hopes to use this annual meeting to further deepen exchanges and cooperation and bring more talents, more technologies, and more projects to Keqiao.
Li Lingshen, vice chairman of the China National Textile and Apparel Council, fully affirmed the work of the printing and dyeing industry in recent years. “The printing and dyeing industry is an important part of the textile industry chain and a key industry to improve the quality and added value of clothing and home textiles. In recent years, printing and dyeing companies have continuously increased their investment in research and development, and the R&D investment of industry enterprises accounts for product sales revenue. The proportion ranks first in the textile industry.” In order to speed up the high-quality development of the printing and dyeing industry, he pointed out that the printing and dyeing industry must adhere to innovation-driven, and promote the improvement of the technical level of the entire printing and dyeing industry through scientific research and development and technology application; actively promote green development, Build a green manufacturing system of “three in one” of green products, green factories, and green supply chains; adhere to the responsibility orientation and implement a corporate social responsibility management system.
Ge Chazhong, researcher and director of the Environmental Planning Institute of the Ministry of Ecology and Environment, interpreted my country's latest environmental management policy for the printing and dyeing industry. He said that with the continuous improvement of environmental management requirements and the improvement of citizens' environmental awareness, green and sustainable development is an inevitable trend for the transformation and upgrading of the printing and dyeing industry. With the continuous strengthening of environmental protection supervision, some small and medium-sized enterprises that cannot afford the cost of the "three wastes" treatment will face an impact, while medium- and large-scale printing and dyeing enterprises will continue to improve environmental protection facilities by virtue of management, capital and scale advantages, enhance market competitiveness, and enhance market share. Under policy guidance, the printing and dyeing industry will further optimize the industrial structure, and the degree of industry standardization will continue to increase.
Professor Mao Zhiping of Donghua University discussed the role of electrolyte and urea in dyeing and printing with reactive dyes. He pointed out that organic environmentally friendly electrolytes can make cellulose fibers cationic modification in advance, increase the degree of dye aggregation, and increase the driving force of dyes from solution to fiber. He also said that as the ammonia krypton indicator for printing and dyeing wastewater discharge becomes more and more stringent, reducing the amount of urea has become an urgent problem in the printing and dyeing industry. Mao Zhiping said that in recent years, Donghua University has made a self-made co-solvent and evaluated the possibility of the auxiliary agent replacing urea by comparing the nitrogen content in the printing wastewater.
At the moment of the epidemic, the order volume of printing and dyeing enterprises has dropped sharply, and the pressure has increased sharply. The importance of safety issues is even more urgent. How to choose a safe and reliable range hood is a topic of common concern for printing and dyeing enterprises. Yang Guanghua, general manager of Suzhou Mingkui Fire Technology Co., Ltd., introduced the oil fume purifier independently developed by the company. According to reports, the product uses air to cool down, and the air ducts, range hoods, and chimneys are fully automated and cleaned without flammable materials. The product is fully automated fire prevention, voice feedback, and uses IoT technology applications. In addition, automatic explosion-proof, explosion-proof area can reach 70% of the box. More importantly, the high-frequency power supply can supply up to 40KHZ, which saves at least 30% of the cost compared with the power frequency (50HZ).
Lian Yejun, general manager of Shandong Shuangxin Energy Conservation and Environmental Protection Technology Co., Ltd., shared a comprehensive solution for heat recovery and application of printing and dyeing enterprises. According to reports, the company focuses on R&D and production of waste heat recovery and warming system equipment, and provides customers with a technical and service-oriented company that provides thermal energy recovery and application solutions; the company’s products have a number of independent research and development technologies, such as heat Technologies such as power conversion and heating, exhaust steam recovery, conversion and reuse, and steam reuse from cold water.
In order to improve the utilization rate of dyes, salt has become the most used chemical in the dyeing process of reactive dyes. However, high-salt wastewater seriously pollutes the water body and hinders the green and sustainable development of the textile printing and dyeing industry. Fang Kuanjun, a professor at Qingdao University, said that reducing the source of pollutants is the key to improving the efficiency of sewage treatment and water recycling. Printing and dyeing companies must vigorously apply green technologies to reduce environmental pollution and damage. It is understood that Fang Kuanjun led the team to cooperate with a number of companies to create a salt-free dyeing production line for fabrics, fibers and yarns based on the innovative development of complete sets of technology and equipment, realizing the industrial application of reactive dyes salt-free dyeing for the first time , The use of salt is completely eliminated, and the first-class product rate is over 96%.
It is worth noting that the China Printing and Dyeing Industry Association's product development and production base bronze medal was awarded at the meeting, and the "Fourteenth Batch of Recommended Advanced Technologies for Energy Saving and Emission Reduction in China's Printing and Dyeing Industry" was released. Some typical technologies were exchanged and promoted for the first time at the meeting. In addition, more than ten companies including Lixin Dyeing and Finishing Machinery (Shenzhen) Co., Ltd., Zhongshan Guotai Dyeing and Finishing Co., Ltd., and Changzhou Hongda Electric Co., Ltd. introduced their experiences on topics such as lean management, intelligent manufacturing, and green development. As of press time, the meeting is still in progress. The annual environmental protection meeting will end on the 13th, and the participants will also visit Zhejiang Red, Green and Blue Textile Printing and Dyeing Co., Ltd.
