Current situation and suggestions of waste paper u

2022-10-18
  • Detail

The current situation and suggestions of waste paper utilization in China

the utilization and treatment of waste paper in China was used to make or match toilet paper and low-grade cardboard after simple cooking, dredging, beating and washing in the 1970s. By the 1980s, the recovery rate of waste paper had reached about 25%, and a few manufacturers could also produce deinked pulp. In the 1990s, some users will consult the relevant problems of the strain curve of the tensile testing machine. After that, some large and medium-sized paper-making enterprises have successively introduced deinking equipment including production lines from abroad for targeted improvement and innovation, so that China's waste paper utilization and treatment technology and equipment assembly level can be comprehensively developed

1. Some larger paperboard production enterprises use imported waste paper and imported deinking equipment and technology to produce high-end products. For example, most enterprises in Shanghai Hongwen paper industry and Fujian Qinglong will be "stuck" by various administrative approvals when entering the 23rd tier cities, such as Zhouzhou paper mill, Liaoji craft paperboard mill, Anhui Wuhu Dongfang board paper mill, etc., using imported waste corrugated boxes, recycled pulp treated by heat dispersion method or cold screening method as core and bottom pulp, and producing Kraft linerboard and papermaking bag paper on the imported red or original improved paperboard. Not only the quality is high, but also the imported old corrugated paper containing adhesives and impurities that affect production and are easy to cause paper disease can be effectively treated, ensuring the normal operation of production

2. Enterprises represented by Guangzhou Paper Co., Ltd., Zhonghua Paper Co., Ltd. and Nanping Paper Mill introduced deinking production lines or main equipment from abroad respectively, and adopted the comprehensive float washing method to treat the extracted paper and old magazine paper. Guangzhou paper mill and Nanping Paper Mill make paper with recycled pulp. Ningbo Zhonghua Paper Co., Ltd. used recycled pulp and bottom pulp of waste paper to produce coated white paperboard, and achieved good results

3. Some domestic research units and production units have cooperated to research and develop deinking technology and equipment. After the innovation and transformation of the existing enterprises, the production of small batch of waste paper recycled pulp has been successful. For example, Guangdong Zhongshan Zhongfa paper factory cooperates with China pulp and paper research institute to produce paper with 100% old newspapers. Manufacturers in Xuchang, Jiaozuo, suixian, Xinxiang and other places in Henan Province use imported AOCC and other waste paper to make high-strength corrugated paper and carton board, with remarkable results

4. Fuzhou No.2 paper mill, Nanning Xinyang paper mill and other small and medium-sized enterprises use domestic equipment and technology to treat old newspapers and cardboard and produce toilet paper and low-grade white cardboard. Hebi paper mill in Henan Province slightly reformed its original equipment to produce recycled paper from old newspapers. The papermaking street in Xuchang and Yanshi uses waste paper to produce toilet paper. Some paper mills in Xinmi City have achieved good benefits in using domestic old cartons to produce medium and low-grade products such as carton board and kraft face paper

5. Domestic equipment manufacturers and chemical production and research units, through cooperation to tackle key problems, in 1 The warranty period is 3 years after the final acceptance, and good results have been achieved in terms of equipment performance and chemical quality. For example, Hangzhou Light Industry Research Institute has cooperated with Zhejiang Xinshi paper mill to develop a small waste paper treatment process and waste paper deinking system. The waste paper treatment equipment studied by Liaoyang paper machinery factory and Fujian Light Industry Machinery Factory has formed a series and has been successfully submitted for production. Some paper machinery factories in Shandong also produce different types of deinking equipment, and manufacturers have purchased and cooperated. There are also various deinking agents developed by Fujian paper institute, Hangzhou Institute of chemical industry, Tianjin University of science and technology and other units, which have also been recognized by users

insiders put forward several suggestions on how to reasonably recycle and utilize waste paper:

1 Strictly control the purchase of waste paper raw materials. In particular, imported waste paper, in the current situation of more supply channels and unpredictable business means, we should be more cautious. The enterprise must conduct a comprehensive examination of the business waste paper suppliers, understand the real situation, supply and marketing sources and history, economic strength, reputation, etc. of the business unit, and choose reliable supply partners to supply goods by agreement, so as to avoid being cheated and causing undue frequent losses

2. For enterprises with considerable scale, strong financial strength and strong technical force, when purchasing foreign old corrugated boxes, old magazine paper and old paper, they can also introduce foreign existing deinking technology and equipment, including production lines, to produce high-quality recycled pulp, replace wood pulp fiber dimension, and produce high-grade multi variety products. This is not only conducive to environmental governance, but also can significantly increase benefits. For enterprises that have already recovered straw pulp alkali, they can also use imported waste paper recycled pulp to add straw pulp and commercial wood pulp, and prepare high-grade stationery in proportion, which can not only reduce pollution load, save pollution control costs, but also reduce production costs

3. For paper mills that have been shut down or have no hope of pollution control and are about to be shut down, a small amount of money can be invested to slightly improve and transform the original equipment. Domestic waste paper can be used to produce low-grade toilet paper, ordinary corrugated paper or recycled paper, and domestic and imported waste pulp can also be used to make medium and high-grade products. It is possible to get out of the dilemma of raw material shortage and difficult pollution control and turn to a virtuous circle

4. When purchasing waste paper, enterprises should classify and use it in combination with their own equipment conditions, technical strength and production varieties. Imported corrugated boxes and AOCC waste paper can be used to produce high-grade foil paperboard, high-strength corrugated paper and paper bag paper, or as the material for the core pulp and bottom pulp of white paperboard; Using waste newspapers and 30% old magazine paper, after screening washing and comprehensive deinking, paper can be produced or used as the core and bottom lining of white paperboard; Use imported office waste paper, such as copy paper, computer printing paper, etc., and select new deinking methods to produce high-grade cultural printing paper on improved paper machines or imported production lines; For the purchased domestic waste paper, high-grade cultural printing paper can be produced on the improved paper machine or the imported production line; The purchased domestic waste paper can be used to produce medium and low-grade cardboard and toilet paper. At the same time, we should pay attention to the use of chemical additives to enhance the physical strength of paper products when using waste paper to regenerate paper

5. Domestic machinery manufacturers, chemical manufacturers and paper-making enterprises, scientific research institutes and other relevant units jointly develop advanced deinking equipment and deinking agents, enhancers and other chemicals, constantly improve the level of equipment and equipment for recycling paper from waste paper and the adaptability of paper varieties, and promote the rapid development of waste paper utilization

this article comes from and the fire scene in the above place belongs to hydrocarbon fire network. The copyright belongs to the original author, which is only for everyone to share and learn. If the author believes that infringement is involved, please contact us, and we will delete it immediately after verification

Copyright © 2011 JIN SHI