著者

腰塚 哲夫

出版者

JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

雑誌

紙パ技協誌 (ISSN:0022815X)

巻号頁・発行日

vol.56, no.7, pp.963-975, 2002-07-01 (Released:2009-11-19)

参考文献数

12

被引用文献数

1 2

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The amount of production of the hydrogen peroxide in the year 2000 was 145, 744 t. The demand for pulp is 71, 237 t and the ratio has reached 48. 9%. Also, about 60% of the demand for this pulp has been estimated as demand for recycled pulp. Therefore, recycled pulp is an important field of the hydrogen peroxide market.Seven kinds of oxidizing agent (chlorine, hypochlorite. chlorine dioxide, hydrogen peroxide, oxygen, ozone, peracetic acid), three kinds of reducing agent (sodium hydrosulfite, sodium borohydride. formamidine sulfinic acid) were described and especially hydrogen peroxide, sodium hydrosulfite, and formamidine sulfinic acid were described in detail as important bleaching agent.Concerning hydrogen peroxide, the influence of metals, the heat of kneader and catalase were described. The preventative measures were also described.Concerning sodium hydrosulfite, the decomposition by air, water and combustion by water were described. As a measure, “HS master”, which can dissolve sodium hydrosulfite continuously in nitrogen gas atmosphere and can feed it to the pulp bleaching site was introduced. “HS master” was developed by Mitsubishi Gas Chemical.Concerning formamidine sulfinic acid, the “Fosble System” which is able to manufacture it on-site was introduced. The “Fosble System” was developed by Mitsubishi Gas Chemical.