New technology to solve the problem of black liquor in papermaking-Jinling Papermaking Equipment

　　Heilongjiang Research Institute of Chemical Industry Co., Ltd. and Beijing Rongzhi Fuqiang Technology Co., Ltd. signed a technology transfer agreement on the 6th. The latter will use ecological oxygen and chlorine-free bleach manufacturing technology to build a 100,000-ton clean straw pulp production line in Heilongjiang Province. Ma Yongsheng, president of the Heilongjiang Paper Association, said that this technology can effectively solve the problem of black liquor in the traditional paper industry.

　　According to Ma Yongsheng, black liquor is the main source of pollution in papermaking wastewater. This technology is applied to the straw pulping and papermaking industry, which can effectively solve the problem of black liquor discharge, and the middle water can be recycled.

　　According to reports, at present, the textile and papermaking bleaching and disinfection industries generally use chlorine-based products, and the resulting dioxins and chloroform have serious impacts on human health, environmental protection and safety production. Therefore, the development of a chlorine-free oxygen bleaching process is one of the hot spots in the research and development of cleaner production technologies in the international chemical industry.

　　Tian Yan, one of the person in charge of this technology and the president of the Heilongjiang Provincial Chemical Industry Research Institute, told reporters that the active oxygen content of ecological oxygen non-chlorine bleach can reach more than 24%, and it has successfully industrialized in flax bleaching, swimming pool disinfection and paper bleaching industries Application experiment.