National Science and technology support plan for u

Milk carton papermaking upgrading national science and technology support plan

What about the carton in your hand after drinking milk? In October last year, the Hangzhou Municipal Youth League Committee called on primary schools in the city to recycle milk cartons, build a hope primary school in the less developed areas of Hangzhou, and found that only a few technicians were needed to operate these production lines, which led to the cooperation of Fulun paper factory, the only enterprise specializing in recycling milk cartons in China

recently, this production technology of circular economy has made new progress: Fulun paper mill participated in the research of "key technology and demonstration research of cleaner production and circular economy - packaging waste resource utilization technology", which was officially "upgraded" by the Ministry of science and technology as the national science and technology support plan

this national level "packaging 7. Effective experimental space: 300mm waste resource utilization technology" is jointly undertaken by the Chinese Academy of Environmental Sciences, the China Packaging Federation, Tsinghua University and Fuyang Fulun paper mill. Fulun paper factory mainly undertakes the project construction and operation of "packaging waste recycling project demonstration" and "low-quality packaging material heat recovery project demonstration", and participates in "China's packaging waste recycling system city furniture street scene add beautiful color demonstration research"

the milk box is covered with "treasure"

"this is recycled paper." Yang Jun, the director of Fulun paper factory, handed over a business card. The color of yellowish brown was different. He told me that this kind of recycled paper was produced by recycling waste milk cartons. "The purchase price of a ton of beverage cartons is about 1400 yuan, which can produce 500 kilograms of high-grade pulp"

in addition to making recycled paper, the discarded milk boxes are covered with "treasures". According to Yang Jun, the milk beverage carton is composed of high-quality long fiber paper and high-quality aluminum-plastic. A packing box weighs 10 grams, including 8 grams of high-quality long fiber paper and 2 grams of aluminum plastic materials. The separation of paper fibers is a good raw material for papermaking; The aluminum plastic part (20% aluminum and 80% plastic) is processed into plastic particles, which become the raw materials of plastic products such as flowerpots and sewage pipes

according to statistics, Hangzhou and Ningbo consume 20000 tons of beverage boxes every year, which has great potential in the recycling of packaging waste. However, because the beverage carton contains glue, plastic, aluminum and other composite materials, it is difficult for general enterprises to separate. The recycling of waste packaging has become a worldwide technical problem, which has been almost untouched in China before, leaving a large number of packaging discarded in vain, causing secondary pollution to the environment

the gap in raw materials is the biggest obstacle

at present, the annual output of paper plastic aluminum composite packaging in China is about 30billion packages, and the recovery rate is only about 0.1%. Milk cartons are not even used by scavengers. This situation also makes the recycling process of Fulun paper mill full of hardships. In order to establish a perfect recycling system, Fulun paper factory has invested a lot of manpower and material resources. The main experimental waveforms are supported by the controller (including sine wave, square wave, 3-angle wave, oblique wave and external input waveform) Financial resources, run waste recycling points and landfills again and again, and mobilize schools to do publicity. Yang Jun also fed the profits of the enterprise back to the establishment of a recycling system, raised prices, and encouraged everyone to recycle milk cartons

after three years of painstaking management, now the recycling system of Fulun paper factory has finally taken shape. In 2004, only 35 tons of discarded milk cartons were recycled, but now the recycling volume in a month has reached fourorfive tons. However, there is still a big gap between such recycling and the production capacity of paper mills that can consume 2000-3000 tons of cartons per month. It can be said that the design of the waste refrigeration system recycled from the hands of ordinary people uses energy conditioning technology to discard milk cartons is still quite limited

at present, Yang Jun is busy promoting the recycling of waste milk cartons in Xuancheng, Anhui Province. Although it has been recognized and supported by the state, Yang Jun, who once fought alone, is no longer "lonely". However, the gap in raw materials is still the biggest obstacle to the "recycling of milk cartons". "Now in some primary schools, the concept of leaving cartons after drinking milk has been formed. I hope the whole society can establish such environmental awareness." Yang Jun sighed

reprinted from: Sina