Home >

Tanning Technology Is Also A "Window" For Leather Industry'S Progress.

2011/1/26 15:57:00 87

In January 24th, after years of development, brother technology has made outstanding achievements in the field of vitamins and leather chemicals.

industry

Status: brother technology is China's largest leather chemical enterprise, chrome tanning agent has a global market share of over 9%, ranking third in the world and the first in China.

In view of brother

science and technology

As the main drafters in the field of vitamin K3 and chrome tanning, the company has been involved in the formulation of many national standards such as GB/T7294-2009: feed additive Sodium Bisulfite, naphthalene quinone (vitamin K3), GB/T19940-2005: powdery chrome tanning agent six valence chromium ion detection, GB/T24331-2009: powdered chrome tanning agent for tanning, and so on, further expanding the domestic and international market influence of brotherhood technology.

As we all know, China is a big tanning country.

Leatherwear

The annual output value of the industry is more than 400 billion yuan, but the pollution problem in leather making process is outstanding at present.

Leather technology is low and R & D is lagging behind.

Therefore, it is imminent to solve the pollution problem of leather making.

"Clean leather process and green industry linkage integration technology and engineering demonstration" is China's "11th Five-Year" science and technology support project.

After years of efforts, the research group has developed a series of technologies for pollution reduction and integrated utilization of tannery waste, and set up a "cleaner production evaluation index system for leather industry" and "cleaner production standard for leather industry" issued by the state. At the same time, a series of key chemical and biochemical materials such as a series of enzyme preparations, chrome free tanning agents and other more than 10 kinds of supporting cleaning technologies have been developed, and integrated applications have been realized. A clean production line of leather, pig skin and sheepskin leather has been formed, which is of far-reaching significance for leading the leather industry in China to take the road of circular economy development.

Take Xinji Leather City as an example.

The tannery Industrial Zone in Xinji has achieved the "separate storage of the chromium solution, the special pport of sewage treatment plants, and centralized treatment". The new technology and equipment of chrome liquor, lye recycling, ash free expansion and water saving drum have been vigorously promoted in leather enterprises. The water consumption of tanning will be saved by more than 1/3, the tannery sludge will be reduced by 80%, and the amount of chrome and lye emissions will be reduced by 70%.

In particular, the Dongming group's tannery wastewater recycling technology project has won the first prize in the national energy conservation and emission reduction. By guiding enterprises to adopt chrome free tanning, chrome free tanning leather has accounted for more than 70% of the total, thus becoming a veritable "green leather".

Tanning technology is also a "window" for leather industry's progress.

The domestic "clean tanning process and green industry linkage integration technology and engineering demonstration" project has completed the integrated application in 9 enterprises, forming a clean production line.

At the same time, over 15 cowhide tanning enterprises and 20 pigskin tanning enterprises completed the pilot, pilot and industrial experiments.

The data showed that the average amount of tannery water was reduced by 31%, the average reduction of sulphide was 88%, the average emission of lime was 81%, the average reduction of COD, SS and TS was 47%, and the average emission of ammonia nitrogen was 67%, which could eliminate or reduce tannery pollution from the source.

In the past 3 years, 9 production lines have produced 7 million 980 thousand pieces of pig and cow leather, and the output value is 2 billion 161 million yuan, and the profits tax is 250 million yuan.

Tanning is the process of tanning leather into leather.

Removal of wool and non collagenous fibers can make the collagenous fibers of the dermis be loosely fixed, strengthened and strengthened, and then a series of chemical (including biochemistry) and mechanical treatment should be finished.

The tanning process is usually divided into three stages: preparation, tanning and finishing.

The most commonly used equipment in the tanning process is drum, soaking, liming, hair removal, softening, pickling, tanning, dyeing, emulsion filling and other processes should be completed in the drum, through the mechanical function of the drum, to promote the uniform infiltration of various chemical materials, and complete the chemical action of the preparation on the skin.

Since the beginning of the new century, the state has paid more attention to environmental protection work, especially the "11th Five-Year plan" for the first time put forward the binding index of energy conservation and emission reduction. At the same time, some developed countries in Europe and the United States have promulgated special environmental protection and ecological standards for leather products, and built up a green barrier.

Under such circumstances, Shi Bi, academician of the Chinese Academy of engineering, said that "to achieve sustainable development of leather industry, we must make breakthroughs in the development and application of key technologies and common technologies in cleaner production technology, otherwise we will face the danger of being eliminated."

That is to say, if we want to develop in a leather industry, the tannery technology should be further improved.

Once, there were no masters in all the industries in the world, and the master was once a weak young rookie. But after tens of thousands of exercises, tens of thousands of revisions, millions of reflections and self pcendence, he left the ordinary people far behind. He became a master.

Obviously, the distance from rookie to master is practice.

Natural leather technology in the leather industry should also be so.