求翻译：原料的预处理包括原料的预分馏、预脱砷、预加氢三部分，其目的是得到馏分范围、杂质含量都合乎要求的重整原料。为了保护价格昂贵的重整催化剂，对原料中的杂质含量有严格的限制是什么意思？

Pretreatment of raw materials including raw materials, pre-fractionation, pre-arsenic, pre-hydrogenation of three parts, its purpose is to obtain distillate range, impurity concentrations are in line with the restructuring requirements of raw materials. To protect expensive reforming catalyst, the i

Pre-processing of the raw materials including raw materials for early warning, early warning and 3700% arsenic, pre-hydrogenation Part 3, its purpose is the distillate scope, content, meet the requirements of raw materials. In order to protect expensive re-engineering, to act as a catalyst in the ra

Raw material pretreatment including the raw material pre-fractionation, escapes the arsenic, the pre-Canadian tritium part in advance, its goal is obtains the fraction scope, the foreign inclusion all conforms with the request to rally raw material.In order to protect the price expensive reforming c

Pretreatment of raw materials, including raw materials, pre-pre-fractionation of removing arsenic, pre-hydrotreating of three parts, the goal is to get fraction range, impurity content meet the requirements of reforming feedstock. In order to protect the costly reforming catalysts, the impurities in

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