One among the top 10 manufactures of yarn-dyed industry in China, Jiangsu Lianfa Textile has managed to achieve sustainable development by fulfilling social responsibilities earnestly. The company has always been committed to save energy, reduce emission, and constructed environment-friendly enterprise and Lianfa realized them by improving equipment, technology innovation. In order to strictly fulfil its social responsibilities and set environment-protected image, Lianfa used environment-protected dyes, recycling resource, realized the ‘ecological environment-protected’ of production and quality.
Taking a step forward it has developed a one-way dye liquor circulating dyeing process and lab recipe control system V1.0 which simplifies production operation, as well as realized a reduction of bath ratio from 1:15 to 1:4～1:7 and improved efficiency while water immersion requirement is just 20%-70% of the original system. It is a globally advanced system which wins Lianfa an advanced energy conservation and emission reduction award in the industry.
It has also developed one bath process for colour fixation and softening, and one bath process for acid pickling and enzyme wash. One bath process for colour fixation & softening: develop the softener which can be used with fixer at the same time by controlling PH index, temperature and time of feeding in raw material.
Acid pickling enzyme wash technology is a process wherein first the acid is added, and then alkali by bath temperature and pH value control, which can help saving one step water consumption. This technology saves 10 per cent water, which is about 1,65,000 tons of water per year. Lianfa also applies heat exchange system to recover heat from hot temperature waste water generated from dyeing and finishing processes, as well as reuse the steam condensate and cooling water generated from dyeing, finishing, heating and heat preservation processes to new dyeing and mercerizing/sizing processes.