Tannery Industry Issued Norms, Clear Technological Transformation Direction

< p > here, the world is < a target= "_blank" href= "//www.sjfzxm.com/" > clothing < /a > a target= "_blank" href= "_blank". < /p >
< p > in order to promote structural adjustment and industrial upgrading of leather industry in China, regulate industry investment behavior, avoid low-level redundant construction, promote rational industrial layout, improve resource utilization, protect ecological environment and achieve sustainable and healthy development of industry, according to relevant laws, regulations and industrial policies of the state, in May 12th, the Ministry of industry and Commerce issued the "specifications for leather making industry". < /p >
< p > the requirements for leather industry are laid down in terms of enterprise layout, production scale, process technology and equipment, environmental protection (http://tec.k8008.com/zt/9/1.html), occupational safety and health, and supervision and management. In terms of process design and equipment, the "tannery industry standard conditions" clearly defines seven technological transformation directions. < /p >
Technology; adopt water-saving technology, reduce water consumption and displacement; adopt various clean production technologies, reduce the production of COD, ammonia nitrogen, volatile organic compounds, chloride and trivalent chromium; carry out technical transformation of water saving and cleaning production; use the overloading drum, Y drum and so on to realize energy saving and emission reduction water processing equipment, precision sheet gripper, shaving machine and leather grinding machine to promote energy-saving, emission reduction and consumption reduction of mechanical equipment; adopt low toxicity, degradable environmental friendly a target= "_blank" href= "//www.sjfzxm.com/" > leather < /a > chemicals, encourage the use of water-based finishing materials; encourage enterprises to use chromium rich sludge and chrome leather scrap recycling technology. < p > include: recovery of waste salt or separate standard treatment. < /p >
< p > the science and technology achievement column (http://tec.k8008.com/) of Ke Yi net provides the following related technologies for reference: < /p >
< p > waterborne polyurethane leather finishing agent. There are seven kinds of thirty varieties, such as cationic, crosslinking, light resistant, filling and composite resins, which are widely used as leather finishing agents for pig, cattle and sheep in leather industry. Main technical features: it can significantly improve the water resistance, solvent resistance and flexural properties of leather, so that leather has excellent physical properties. It is suitable for finishing, sealing, covering, and covering the bottom, middle and top layers of all kinds of garments, sofa, vamp and two layers of leather. < /p >
< p > using the high concentration waste organic acid solution to prepare the Mongolian type chrome tanning agent. This project studies the production of chrome tanning agent by using formic acid and sodium formate wastewater in perfume plant as partial reducing agents and Mongolia agents. Some spice factory wastewater (formic acid wastewater and formic acid wastewater) has a very high COD content, of which formic acid wastewater pH is below 4, which belongs to strong acid type super high concentration organic wastewater, which is difficult to treat by traditional biological, chemical and physical methods. However, organic acids have reducibility, formic acid, acetic acid and some other complexation. They have good masking effect. They can replace chromium as a reducing agent to prepare chrome tanning agent, and also use it as a masking agent. This can thoroughly dispose of these organic acid waste water and turn waste into useful materials. The project uses the waste water from the perfume factory as a resource to solve the wastewater pollution of the perfume factory, while reducing the production cost of the chrome tanning agent, meeting the requirements of environmental protection and recycling economy, and has significant social, economic and environmental benefits. < /p >
< p > NL- acid resistant multifunctional synthetic fatliquoring agent. The < a href= "//www.sjfzxm.com/news/index_c.asp" > Product > /a > is an excellent reactive multifunctional leather fatliquoring agent. Its most prominent feature is acid resistance and strong ion resistance. Its emulsion stability is good. It can be used directly in the condition of pH value 1~8 and chrome tanning process. It can also directly add fatliquoring after chrome tanning without neutralization and washing. Therefore, the tannery process can be shortened and raw materials saved. It is especially suitable for the fatliquoring of top grade leather such as baseball leather, antique leather, wrinkled leather and so on. The leather processed by this fatliquoring agent is soft, plump, mercerized and has high tear resistance. So that the price of leather can be greatly improved. The development of the product has filled the blank of the domestic acid resistant multifunctional synthetic fatliquoring agent, and has added a new high-grade leather to the domestic leather industry. More leather and leather processing technology < /p >