Key Technologies For Sericin Recovery

< p > main technical content introduction < /p >

< p > the technology uses a href= "//www.sjfzxm.com/news/" > sericin > /a > sexual character, and has the lowest dissolution rate near the isoelectric point. Firstly, isoelectric point precipitation method is used to recover most of sericin, so as to reduce the load of subsequent membrane treatment. Combined with ultrafiltration and nanofiltration technology, the remaining sericin is recovered, and the problem of membrane clogging is easily solved in the process of sericin industrial recovery. The relevant sericin recovery device is designed for the technology, and the technological conditions of sericin recovery are systematically studied. The sericin is successfully industrialized and efficiently recovered.

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< p > by using this technology, high purity silk powder is successfully prepared from degumming wastewater, and the cost is obviously reduced compared with the traditional cocoon coating preparation of Silk rubber powder.

Meanwhile, the recovered sericin has been successfully applied to functional feed of special culture (Chinese sturgeon and puffer), functional finishing of fabrics such as cotton and cashmere, improving the moisture absorption and thermal insulation properties of fabrics, improving the added value of products, studying the key technology of sericin functional finishing, and solving the problem of high loss of sericin in treated fabrics.

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< p > the popularization and application of this project can achieve 99% recovery of sericin, COD<98mg/L of effluent, suspended matter, pparency and pH value to meet the national wastewater discharge standard.

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< p > the technical achievement is in Xinyuan "a href=" //www.sjfzxm.com/news/index_c.asp "> cocoon silk < /a > group Limited by Share Ltd is used for the recovery of sericin and the preparation of high purity and soluble silk powder.

The products of this project are developed in Jiangsu Zhongrun Agricultural Development Co., Ltd., Nantong Yuan Sheng Tang Biotechnology Co., Ltd. and Jiangsu Xin Fang < a target= "_blank" href= "//www.sjfzxm.com/" > textile < /a > Group Co., Ltd., used for feed, daily chemical products and cashmere coating of special aquaculture (Chinese sturgeon and Fugu).

Products sell well in the market, and several major applications have increased production value of 85 million 680 thousand yuan in recent 3 years, 13 million 140 thousand yuan in new profits, 6 million 920 thousand yuan in tax revenue and 3 million 100 thousand US dollars in foreign exchange earnings.

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< p > application scope < /p >

< p > this technological achievement is applicable to < a href= "//www.sjfzxm.com" > silk dyeing and finishing > /a > enterprise.

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< p > energy saving and emission reduction effect and input feasibility analysis < /p >

< p > the unit price of recycled silk powder is calculated at 300 thousand yuan / ton.

Cost accounting for Sericin Powder: (at 16.8% conversion rate) < /p >

< p > coarse rubber powder (recovery) 6 tons (15 thousand yuan / ton x 6) =9 10000 yuan < /p >

< p > decolorant: 500kg costs 5 thousand yuan < /p >

< p > electricity charges: 20000 degrees x 0.8 yuan =1.6 10000 yuan < /p >

< p > steam: 80 tons * 85 yuan =0.68 10000 yuan < /p >

< p > water: 8000 tons * 1.2 yuan =0.96 10000 yuan < /p >

< p > Packing: 8 thousand yuan < /p >

< p > other expenses: 50 thousand yuan < /p >

< p > Tax: (30-18.54) * 17%=1.95 10000 yuan < /p >

< p > gross profit: 30-18.54-1.95=9.51 10000 yuan < /p >

< p > the daily processing of degumming wastewater is 8 tons, and the annual recovery of 50 tons of Silk rubber powder is 4 million 755 thousand yuan.

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< p > new investment of the technology is 6 million 890 thousand yuan.

Considering the reduction of sewage after the recovery of sericin, the annual sewage treatment is reduced by 250 thousand yuan, so the payback period is about 2 years.

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< p > this technical achievement has solved the urgent problems to be solved in China's traditional superior industries and silk waste water treatment, reducing sewage discharge and effectively preventing sericin sewage from polluting the environment. It is of great significance for < a href= "//www.sjfzxm.com" > cocoon silk industry < /a > to achieve energy saving and emission reduction and sustainable development. At the same time, we can make full use of the valuable natural protein of sericin and turn waste into treasure, which will bring huge economic benefits to silk and cocoon enterprises.

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