Hydrogen peroxide production and pulping paper cleaning

There are different concentrations of peroxidized commodities on the Chinese market. In addition to chemical synthesis and textiles, papermaking is also a large user of hydrogen peroxide, and foreign applications in pulp and papermaking exceed 45% of the total demand.
As a clean, cheap and versatile oxidation bleaching agent, hydrogen peroxide has been widely used in the bleaching process of mechanical pulp and high yield pulp. In recent years, hydrogen peroxide has also been increasingly used in multi-stage bleaching of chemical pulp in place of chlorine-containing bleach capable of generating chlorine. After some developed countries such as North America, Northern Europe, etc. basically realized chlorine-based pulp (ECL) or total chlorine pulp (TCL), it was reported that Japan will have North Vietnam (2 lines), Prince Choi-Ji well factory, Mitsubishi 8 households this year. The conversion of chlorine-free pulping is achieved at the plant, etc. From 2003 to 2005, the 13 pulping systems of Mitsubishi North Plant and Nippon Paper Industries will also be completed.
In China, as the proportion of wood pulping increases year by year, the increase in mechanical pulp and the large amount of waste paper used will increase the demand for hydrogen peroxide. In order to adapt to the requirements of environmental protection and the development trend of the world pulp and paper industry, the chlorine-free pulping process has also been gradually adopted in the reconstruction of new pulp mills and old plants in China. At present, several key enterprises producing newsprint and writing and printing papers, such as Yibin Paper, Nanping Xingguang Group, Yueyang Paper, and Liuzhou Paper Mill, have all introduced bleaching processes containing peroxygen in the technological transformation.
Since the 1980s, the hydrogen peroxide manufacturing technology has gradually improved and the production has developed rapidly. The production technology is mainly based on advanced technology, low energy consumption and low cost. In 1997, our country realized industrial production of plutonium. Now its complete set of technology has gone abroad. Transferred to Turkey and Taiwan Province of China. In 1996, the country’s total production capacity was 99,000 t. The actual output was 7.7 t. By 1998, 44 enterprises in the statistics had produced nearly 110,000 tons. Several major hydrogen oxide production lines in Shanghai and Guangzhou are still under construction. It is estimated that in 2000, the total hydrogen peroxide production capacity in China will be about 18 tons.
The capacity of hydrogen peroxide in the world is about 2.5 million t/a, and Dajing is 20 times that of China. Similarly, with a rough estimate, the capacity of hydrogen peroxide for papermaking in the world is equivalent to more than 10 times that of China. Excluding China's application of hydrogen peroxide in chemical, electronics, medicine, etc., may also be a relatively minor factor. It can be seen that the application of hydrogen peroxide in pulping and papermaking is quite different. The development of hydrogen peroxide manufacturing technology and production has enabled the hydrogen peroxide market to have sufficient supply and reasonable prices, providing a valuable material condition for the paper industry in China to use chlorine-free and chlorine-free bleaching technologies. The change in the structure of pulping raw materials and the trend toward cleaner pulp production will in turn provide a broader space for the further development of hydrogen peroxide production.