Key Points For Sustainable Development Of Printing And Dyeing Industry: "More Attention" And "Need"

A day and a half, more than 60 papers, 25 special reports, the audience attentively, and the representatives outside the venue exchange enthusiastically, this is the eighth printing and dyeing finishing seminar.

It is not difficult to find that in recent years, China's printing and dyeing finishing technology has made remarkable progress, and all kinds of eco environmental standards and new technologies.

What are the key concerns of printing and dyeing enterprises? What is it?

More attention: key points for sustainable development of printing and dyeing industry

Problems facing the development of the industry and sustainable development

Establishing a printing and dyeing (chemical) Industrial Park, adopting advanced equipment with high degree of automation, low energy consumption and less pollution and adopting new technologies and technologies of sustainable development are the key points for the sustainable development of the printing and dyeing industry in the future.

The report on "sustainable development of the printing and dyeing industry" made by Wang Jiyong, director of the printing and dyeing Specialized Committee, has attracted great attentions from the participants.

Judging from the overall situation of the textile industry, dyeing and finishing industry is still a bottleneck in the development of the textile industry.

This is mainly because our country does not have enough resources to support the backward and high-energy consumption and dyeing and finishing production mode, nor does it have enough environmental capacity to carry the highly polluting production mode.

To this end, the maximum control of consumption of non renewable resources and the reduction of waste emissions in the production process will be the major goal of production and technology development in the future and the key to sustainable economic development.

In this case, how can the printing and dyeing industry achieve sustainable development? Wang Jiyong talked about the following points: establishing a printing and dyeing (chemical) Industrial Park, adopting advanced equipment with high automation, low energy consumption and low emissions, and adopting new technologies and technologies of sustainable development are the key points for the sustainable development of the printing and dyeing industry in the future.

For his point of view, he suggests that steam can be used to generate electricity first, and then steam for printing and dyeing will be equal to two times of energy utilization.

At the same time, it can reduce the cost of printing and dyeing.

The steam after power generation is not cooled directly to the printing and dyeing mill, and the cost of steam cooling can be saved. At the same time, steam has no cost after power generation, and the energy cost of printing and dyeing products can be greatly reduced.

In reducing the cost of waste water treatment, Wang Jiyong suggested that before printing and dyeing wastewater treatment, the waste water from printing and dyeing plant can be treated by waste slag filtration. It can remove part of the color, reduce the pH value of the waste water, remove most of the suspended solids, and then conduct advanced treatment, which can greatly reduce the cost of printing and dyeing wastewater treatment.

In the future, a decentralized and centralized approach to the treatment of printing and dyeing wastewater in the park is put forward. The government must require the printing and dyeing enterprises to realize the diversion of waste water and turbidity. The waste water that can be recycled can be used in production and should not be reused after sewage treatment. This will not only reduce the amount of final sewage treatment, but also reduce the cost of water utilization, and reduce the difficulty of the final sewage.

Such pertinent and practical proposals deserve the attention of government departments.

This method is also very workable for production enterprises.

Over the past decade, China's printing and dyeing equipment has made considerable progress. There has been no obvious difference between the equipment in Korea and Taiwan, China, and even some individual aircraft have reached the international advanced level.

However, as the results of the survey on the use of printing and dyeing machinery jointly organized by the China Textile Press and the China Textile machinery and equipment industry association in the past two years, the problems existing in the domestic dyeing and printing equipment are obvious, mainly concentrated in 4 aspects: poor stability, high energy consumption, low automation and dripping.

Despite these years of improvement, users seem to be dissatisfied.

Although new technologies such as digital online detection and control technology, computer network technology and other new technologies continue to join the ranks of dyeing and printing equipment, the automation degree of domestic dyeing and printing equipment is constantly improving, energy consumption and water consumption are gradually decreasing, and the three major problems of chromatic aberration, weft deviation and shrinkage are slowly improving.

But the problem of poor stability and dripping leakage still exists. Things seem small, but the main difference between domestic equipment and imported equipment is the stubborn disease of domestic equipment.

However, this situation has been fundamentally improved with the acquisition of the world's largest dyeing and finishing equipment manufacturer, Hongkong Lixin industrial group. China's current world's dyeing and finishing machinery technology level does not consider how many key technical problems can not be solved, which impede the development of energy saving and emission reduction in today's textile and dyeing industry.

The current dyeing and finishing equipment has made use of the most advanced technological achievements of the time, and dyeing and finishing equipment industry is already a technology intensive industry.

The more mature technologies are mainly embodied in computer automatic control technology, central distribution system for dyeing and finishing, on-line measurement and control technology, waste heat recovery and utilization device, reclaimed water reuse technology, air flow dyeing machine, modern dyeing machine, chemical fiber fabric continuous oil washing machine and new energy utilization technology.

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Needed: rational application of advanced equipment and technology

The practical application of printing and finishing technology in enterprises and the enhancement of added value of products.

Biological enzyme pretreatment technology, mercerized alkali closed recycling technology, small bath ratio dyeing technology, reactive dye wet short steaming process, reactive dye cold pad batch dyeing technology, pigment pad dyeing technology, plant dyeing technology, pigment printing technology, digital printing technology, foam dyeing finishing technology and enzyme finishing technology, these relatively mature finishing technology is the printing and dyeing enterprise can be directly used in the production process.

On the afternoon of March 9th, organizers of the conference arranged for participants to visit Zhejiang Yongxin printing and dyeing Co., Ltd.

The company has been deeply impressed by the actual application of the automatic computerized pulp mixing system, wax spraying and net making system, printing laboratory drop matching system and rainbow high speed digital printing machine.

In the face of these advanced production application systems and equipment, visitors have given high attention.

After the introduction of Yongxin Hangzhou open source computer technology Co., Ltd., the automatic printing system has been used to improve the accuracy of color modulation and ensure the stability and reproducibility of color light. The rate of color reproduction is increased from 82% to 95%.

In terms of dyes and auxiliaries, the residual pulp and residual pulp were greatly reduced, and the residual pulp and residual pulp were fully utilized to reduce the waste of dyeing and finishing materials by 15%, and the cost of dyeing and finishing materials was more than 1 million yuan a year.

The key technology of the finishing process, the color matching system of printing laboratory drops, has also been well reflected in the production of printing and dyeing in Yongxin.

It significantly improved the accuracy and color reproduction of the proofing formula.

Small sample mother liquor, paste and large production are consistent, the formula uses the same database, after the small sample is pferred directly to the mass production.

At the same time, it eliminates human error and realizes seamless connection between production and production.

In addition, after modifying the color, it is not necessary to re calculate the formula manually. It only needs the computer to automatically modify the formula and redistribute the pulp so as to improve the color changing efficiency.

When the product needs to be returned, it does not need to remake the formula, and directly call the computer sample library data.

The consistency of formula data is ensured and human error is reduced.

Hangzhou's high-speed digital printing machine, which is open source, has helped Yongxin printing and dyeing achieve fast proofing. Now, the customer's proofing requirements can be completed by 1~2 working days, but the original needs 1~2 weeks.

The digital printing technology applied in Yongxin printing and dyeing has also achieved good results in energy saving and emission reduction.

Compared with the traditional printing technology, the average power consumption of the whole machine decreased by 35%~50%, the water consumption decreased by 25%~40%, the dye consumption dropped by more than 60%, the pollution level was only 1/25 of the traditional printing, and the sewage was easy to handle.

Adopting the new technology and technology of sustainable development is still the top priority of the pformation and upgrading of the printing and dyeing enterprises.

For example, biological enzyme pretreatment technology, mercerized alkali closed recycling technology, small bath ratio dyeing technology, reactive dye wet short steaming process, reactive dye cold pad batch dyeing technology, pigment pad dyeing technology, plant dyed dyeing technology, pigment printing technology, digital printing technology, foam dyeing finishing technology and enzyme finishing technology.

These relatively mature finishing technologies are directly adopted by printing and dyeing enterprises in the production process.

If enterprises cooperate with their actual production and apply them rationally, these new processes and technologies will bring more economic benefits to enterprises.

At present, some key technical and technological problems still deserve further discussion and attention of printing and dyeing enterprises.

With the strict implementation of the national policies on energy conservation and emission reduction, new equipment, new dyes and new processes and new technologies are emerging in an endless stream. There are indeed high technologies and new technologies, but there are many fake technologies. Enterprises should make full investigations before listening to these new technologies.

First test, then apply; first account, then purchase.

Only in this way can we ensure two technological improvements and economic benefits.