SOME LATEST DEVELOPMENTS IN CHEMICAL MECHANICAL PULPING OF HARDWOODS
Technologies involved in chemical mechanical pulping of hardwoods have undergone some significant developments for the last decade. The general trend has been that more and more projects use different combinations of alkali peroxide chemicals with different refining strategies, based on basic fundamental concept of P-RC APMP technology, and less using alkali sulfite for the pretreatment. After many years of development and industrial practice, P-RC APMP technology has been developed into different options for different raw materials and applications. The fundamental concept behind the technology, however, has remained the same:alternation of alkali peroxide chemical treatment and refining. It typically has four process steps, in an order of “alkali peroxide treatment + refining +alkali peroxidetreatment + refining. By alternating the alkali peroxide treatment and refining, a best synergy may be achieved between the two. Different process designs based this basic concept, together with their applications in differentindustrial situations and results from commercialoperations, are presented and discussed in this paper.
Eric C. Xu
Andritz Inc.,R&D Lab&Pilot Plant, USA
国际会议
International Mechanical Pulping Conference 2011(2011国际机械浆学术会议)
西安
英文
9-14
2011-06-26（万方平台首次上网日期，不代表论文的发表时间）