上海星火制浆造纸厂麦草备料工艺的选择

Discussion about the Selection of Wheat Straw Raw Material Preparation System

本文就麦草制浆的干法和湿法备料工艺进行了比较,认为湿法优于干法,可以提高草片的质量,去除原料中对制凝造纸不利的杂质,如草穗、草叶以及草中夹带的泥砂、石块,甚至除去草中有害的组份。从纸浆质量,消耗、化学品回收、劳动强度等方面看,湿法也优于干法。

The purpose of wheat straw raw material preparation is not only for cutting the straw and removing the dust, but also for removing any kind of impurities as complete as possible, which include straw leaf and ear, sand and rock, as well as part of detrimental composition in stalk, finally the high quality straw chips containing an even moisture are prepared for pulping.Comparison between dry preparation process and wet process was made in this paper. The conclusion is that wet process is superior to dry process in many aspects such as pulp quality, chemical consumption, chemical recovery efficiency and labour intensity.Combination of dry process and wet process although remains the advantages of both processes, the disadvantages of both processes are also inavoidable, considering the process to be more complicate, combination process is not recommended in general.