CTMP Pulping principle： Wood chips are impregnated with selected chemicals at a certain temperature to soften and swell the amorphous areas of lignin, hemicellulose and cellulose in wood. When the temperature reaches the“glassy”conversion point of lignin , the fibers are separated from the wood matrix by the compression pulse action of the fluted disc and other mechanical actions…

1. The purpose of refining?  Answer: According to the quality requirements of paper or cardboard and the type and characteristics of the pulp used, physical methods are used to improve the shape and properties of fibers under controlled conditions, so that the manufactured paper or cardboard meets the expected quality requirements. 2. The main task…

In order to produce good paper, paper making equipment must be well maintained. The following is to share with you the contents that paper making equipment personnel must read: 1. The general requirements of the equipment components, sound, power foot, instrument spirit, complete data. 2. Equipment maintenance of the “cross homework” cleaning, lubrication, adjustment, fastening,…

When producing the relatively high-grade paper grades, the part of the stock sent from the chemical pulping workshop to the paper workshop produces white water, which affects the toning and sizing of the paper machine due to the high residual chlorine content. Generally, it is directly reused in the paper workshop, and this part of…