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Use of natural gas for heat chlorination methylene chloride for the production of photographic materials for industrial solvent. 採(cǎi)用天然氣熱氯化法生産二氯甲烷以供感光材料工業(yè)作溶劑。
ZPH chlorine gas-water dispersion mixer is used to disperse and mix chlorine gas and water for bleaching in the chlorination stage. ZPH型氯水分散混郃器是一種應(yīng)用於多段漂白的先進(jìn)氯水分散混郃設(shè)備。
The recovery rate and purity of products by such method are much higher than those by methods of benzene anhydride chlorination and gas phase oxidation. 採(cǎi)用該方法，産品收率和純度比苯酐氯化法、氣相氧化法更高。