Waste plastics pyrolysis oil technology "come out"

2014-01-13 1020


Japan is the largest pyrolysis oil gasification process developed countries, such as Kawasaki Heavy Industries, Mitsubishi Heavy Industries and other large companies and many small companies are developing pyrolysis oil technology and has been industrialized. America's global resources company Envion company, JBI Canadian company, the company SITA UK, Italy FISSOREAGENCY companies have realized the pyrolysis oil technology commercialization.

In China, oil-based plastic waste is technically the 1990s began, the S & P was only by the size of Xinghua City, Jiangsu Province, there are more than a dozen plastic refinery, but mostly in the form of workshops, there is no large-scale, lack of high-value recycling technology and high-value products, plastic scrap and waste plastic through artificial selection of raw materials.

Equipment for the coal or oil tank reactor, the biggest problem encountered during operation is slag and bottoms of plastic pipe junction, not continuous production. In the production process often gelatinous substance clogging pipes, tank pressure will rise rapidly, there are security risks, so only turn off cooling, slag after production. Thus neither continuous production and waste a lot of energy, labor intensity is very large, high production costs, yields and small, difficult to industrialization.

For this reason, the "Eleventh Five-Year" National Science and Technology technical support technology specifically included in the "garbage in urban and rural waste plastics pyrolysis technology research efficient and stable." After three years of hard work, Tongji University in Shanghai and Beijing Environmental Protection Technology Equipment Co., crack source, fiber and Shanghai Environmental Protection Technology Co., Ltd., China University of Petroleum joint research, significant progress has been made.

Three-cracking furnace to heat the composite bed static and dynamic vulcanization, the internal air flow guide by the robot and the combination constantly agitated and promote flow of the plastic, full suspension mixed uniformly heated while adding a catalyst at a specific temperature of the plastic pressure conditions sufficient catalytic cracking conversion of carbon, tar and gas. Continuous production means feed the material, stable continuous production. Illustrated flow chart, can be gas yield of about 15 ~ 20% (wt%), online gas can be used as fuel cycle cracker to use, no external fuel consumption of the entire process are net energy output process.

Oil product output rate of more than 65% (by plastic volume) of fuel products were better than CST180. Bottom can be made of cinder sale of carbon black and activated carbon.

Production capacity of the device: can process plastic waste content in more than 30% of household waste 100 tons / day, the annual handling capacity of 30,000 tons or more. The entire system of waste plastics pyrolysis oil, gas, carbon conversion rate of not less than the product itself quality plastic waste to 99%.

The technology running costs not more than 100 yuan / ton, garbage and environmental costs 200 yuan / ton, the production of pyrolysis oil average price 3000 yuan / ton. It is clear that the stability of pyrolysis of waste plastics and efficient high-value technology has obvious social and economic benefits.

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