China's dye industry ranks among the world's advan

2022-08-21
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In the 40 years of reform and opening up, China's dye industry ranks among the world's advanced

this year marks the 40th anniversary of reform and opening up, and also coincides with the centenary of China's dye industry. China's dye industry has grown from scratch, from small to large, from a single variety to rich and colorful. Now the production level has ranked among the international advanced ranks, and the production scale has also jumped to the top of the world. In this issue, please review the 100 year development history of China's dye industry and look forward to the future development of the dye industry

01 hundred year history of dye development

the birth of dye industry

in 1918, the predecessor of Dalian dye factory was founded in Dalian, announcing the birth of China's dye industry. From 1918 to the eve of liberation, China's modern dye industry experienced initial establishment, recovery, development and gradually expanded. After the founding of new China, the development of China's dye industry has stepped into a new stage of steady improvement. On the eve of reform and opening up, China's dye industry has gradually formed a dye industry pattern, including two dye factories in Shanghai and Tianjin, one south and one north, plus 10 key state-owned enterprises in various regions, such as Jilin dye factory

during the period of reform and opening up

after the reform and opening up, while state-owned dye enterprises were transformed, a large number of Township, joint venture and private dye enterprises began to be established and developed rapidly. In particular, the rise of private dye enterprises, represented by Zhejiang electromagnetic directional valve 1, has played a leading role in the system transformation and structural adjustment of national dye enterprises

Since the late 1990s, the main dye production bases have gradually shifted from Jilin, Shanghai and Tianjin, which were originally state-owned enterprises, to Zhejiang and Jiangsu, which were mainly private enterprises. The annual output of dyes in these two provinces once accounted for about 80% of the country, and the export volume of dyes was close to 70% of the country

up to now, there are nearly 100 dye pigment production enterprises in Zhejiang Province alone, all of which are private enterprises, and several of them have developed listed group companies with annual sales of billions of yuan. There are also more than 100 dye production enterprises in Jiangsu Province, mainly private enterprises, mainly producing disperse dyes, reactive dyes and vat dyes

02 major achievements of dyes in the past century

innovation in the dye industry

while the economic composition has changed greatly, the innovation and development of the dye industry has also changed with each passing day, and has made remarkable achievements: the production scale has expanded rapidly, ranking first in the world in dye production, and the production capacity accounts for more than 2/3 of the world's total production capacity; The technology research and development of the whole industry has made continuous progress, and a number of landmark scientific research achievements have been achieved. Technological innovation has become the core driving force for the development of the industry

1

in the creation of new products, manufacturing enterprises and scientific research institutes have begun a wider range of research and development work, involving all categories of dyes, organic pigments, textile auxiliaries and related intermediates

2

in terms of equipment upgrading, the large-scale synthesis reaction equipment has successfully solved the engineering and technical problems of mass transfer and heat transfer of large-scale reactors, and greatly increased the feeding amount of a single reactor and the output of a single batch in the synthesis process; Large filtration equipment with high temperature resistance and organic solvent resistance, such as automatic plate and frame filter press, improves the effective area and filtration rate of filtration, and reduces the discharge of dye wastewater

3

in terms of product innovation, the whole industry has vigorously carried out the substitution of environmental friendly dyes and dyes containing carcinogenic aromatic amines. At present, nearly 500 new environmental friendly dyes have been successfully developed, and environmental friendly dyes have exceeded 2/3 of all dyes

overcoming the problem of safe and clean production

intrinsically safe and clean production is a difficult problem in the dye industry. Over the past 40 years, China's dye industry has experienced the pain of being criticized, and also reaped the transformation of Phoenix Nirvana

in terms of cleaner production processes, the whole industry has vigorously developed new processes to replace the traditional processes with serious pollution and reduce the emission of "three wastes". For example, hydrogenation reduction process is used to replace iron powder reduction, nitrosyl sulfuric acid is used to replace sodium nitrite for diazotization reaction, and non polluting or low polluting solvent is used to replace high polluting solvent

in the treatment of "three wastes", we should strengthen the end treatment, reduce the amount of waste water by membrane filtration and raw pulp drying, treat the waste water by biochemical and physical methods to meet the discharge standard, and treat waste acid and acid containing waste water by MVR technology and multi effect evaporation technology

in terms of safety production, we should standardize the design of new devices, improve the intrinsic safety level of production devices, adopt continuous and automated processes, strictly implement safety management and strengthen personnel training

in addition, the development of industrial parks has taken the lead. By the end of 2016, more than 85% of the enterprises in the whole industry had settled in the chemical park, and the output accounted for more than 95%

international development

international development is the most exciting change in China's dye industry in the past 40 years. In 2004, the joint venture project of Hangzhou Baihe chemical and Clariant was put into operation in Xiaoshan Linjiang Industrial Park; In 2007, Zhejiang, which is the core of our customers' attention, Longsheng and Kiri dye company in India jointly established lonsenkiri dye company; In 2009, Zhejiang Longsheng acquired Germany destar dye company, a global dye giant; In 2011, Zhejiang Runtu cooperated with Yorkshire dye group to restructure; In 2016, Zhejiang CHUANHUA Group acquired Dutch Tona chemical company

through the resolute going out and diversified development, China's dye industry has been deeply integrated into the world industrial chain, and accelerated to move closer to the center of the stage, with a view to achieving the dream of a world dye power as soon as possible

03 analysis on the prospect of dyes in a century

according to the statistical data of the "analysis report on production and marketing demand and investment prediction of the dye industry" released by the prospective industry research institute, China's dye output in 2013 was 895000 tons. By 2014, China's dye output had exceeded 900000 tons. At the beginning of the 13th five year plan, the dye industry has made steady progress. The annual dye output in 2016 and 2017 was 928000 tons and 990000 tons respectively. It is estimated that China's dye production will exceed 1million tons by the end of 2018. Industry experts made the following analysis of the future industry prospects: China has made little technical progress in class a fireproof materials for a long time

1 Promote the transformation and upgrading of the industry and optimize the industrial layout

although China has become the largest dye producer in the world, compared with developed countries, there is still much room for the development of technological innovation in the industry. The research and development direction of new dye products focuses on the color demand of textile fiber development, and pays attention to the quality improvement of old products, energy saving and consumption reduction, so as to meet the development requirements of new dyeing and finishing processes. Dye enterprises meet the new needs of market development, meet the requirements of new processes, new fibers and energy conservation and emission reduction in the textile printing and dyeing industry, and bridge the gap between the creation and R & D capacity of new dye varieties and the advanced level of foreign countries

2. Strengthen technological innovation and independent innovation, and improve the international competitiveness and sustainable development ability of the industry

China's dye industry has the ability to innovate in the industry. Innovation is the cornerstone of the future development of enterprises, and it is also the source for enterprises to expand market share and maximize profits. In the future, the dye industry will be a capital intensive, technology intensive and talent intensive innovative industry with high investment and high return. Upgrading from made in China to created in China will become the new normal of dye enterprises

3. Production mode integration and automation, production equipment modernization and upgrading

at present, although domestic dye production has been technically transformed and the process technology has been improved, most of them still operate in extensive, open, intermittent and labor-intensive ways, with poor emergency handling capacity for environmental protection and safety, and inaccurate reaction control, resulting in unstable product quality and difficult yield to meet the requirements. The main impacts are: first, waste of raw materials; second, more reaction products and isomers; third, pressure on subsequent waste treatment; at the same time, it also increases production costs, so that the competitiveness in the international market is not high. In the future, further breakthroughs should be made in the modernization of production equipment

4. Environmental protection supervision has become stricter, and the trend of survival of the fittest in the dye industry has accelerated.

for a long time, there has been a governance idea of "emphasizing investment and neglecting supervision" in China's environmental protection industry. While environmental protection investment has increased significantly, insufficient supervision and law enforcement have led to poor actual operation of environmental protection equipment and facilities, and a large number of enterprises without corresponding strength have entered the dye industry. With the accelerated establishment of the long-term mechanism for environmental protection supervision, the state's investment in environmental protection supervision has continued to increase, especially after the implementation of the new "environmental protection law", some small and medium-sized enterprises whose emissions do not meet the standards are basically in the state of rectification, semi shutdown, shutdown, which has played a positive role in purifying the dye market environment, and enterprises and production capacity that do not meet the environmental protection requirements have been gradually removed from the market

echoing the goal of "two hundred years" of C-pillar panel proposed by General Secretary Xi, accelerating the progress towards a powerful dye industry and creating new brilliance should also become the goal of everyone in the industry. As the wind vane for the development of the industry, the organizers of Shanghai dye exhibition will also conform to the development of the times, grasp the opportunity, take the "13th five year plan" of the industry as the direction, constantly strive for innovation, and work together with colleagues in the industry to build a perfect platform for the industry to exchange and discuss and display excellent results

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