Refined naphthalene industry naphthalene crude naphthalene dangerous goods transportation. Refined naphthalene export logistics transportation, packing, booking, customs declaration and danger reporting. For refined naphthalene long-term export booking. The product is familiar with the packing requirements and operates in strict accordance with the regulations.

萘是四類一項，屬于易燃固體類的危險化學品。危險貨物編號是41511。

Naphthalene is one of four categories, which belongs to flammable solid dangerous chemicals. The number of dangerous goods is 41511.

工業萘不屬于危險廢物。工業萘是化學工業中一種很重要的原料，其主要由煤焦油進一步加工分離制取，其在煤焦油中相對含量較高，在中國煤焦油中含量可達到8～12％，是焦油加工的重要產品。

Industrial naphthalene is not a hazardous waste. Industrial naphthalene is a very important raw material in the chemical industry. It is mainly produced by further processing and separation of coal tar. Its relatively high content in coal tar can reach 8 ~ 12% in China. It is an important product of tar processing.

從工業萘制備精萘的新工藝,采用反應與精餾相結合方式,以工業萘為原料,過氧化氫為氧化劑,有機酸和無機酸為催化劑

The new process for preparing refined naphthalene from industrial naphthalene adopts the combination of reaction and distillation, takes industrial naphthalene as raw material, hydrogen peroxide as oxidant, and organic and inorganic acids as catalysts
 

工業萘生產是采用精餾的方法將含萘餾分進行分餾提取除產品工業萘。以焦油蒸餾提取出的含萘餾分作為工業萘生產原料到完成工業萘的生產過程分3個階段，即原料預處理，初餾和精餾。

Industrial naphthalene production uses distillation to fractionate and extract naphthalene containing fractions to remove industrial naphthalene. The process from using naphthalene containing fraction extracted from tar distillation as industrial naphthalene production raw material to completing the production of industrial naphthalene is divided into three stages, namely raw material pretreatment, primary distillation and rectification.

在80-110℃溫度下,10-80分鐘,進行化學反應,使工業萘中的主要雜質硫茚被氧化成高沸點,水溶性氧化產物——亞砜或砜類,然后將水相分離掉,將有機相進行精餾以脫除殘余的氧化產物及其它雜質,即可得到高純度的精萘.

Under the temperature of 80-110 ℃ for 10-80 minutes, carry out chemical reaction to oxidize the main impurity indene in industrial naphthalene into high boiling point, water-soluble oxidation product sulfoxide or sulfone, then separate the water phase, and distill the organic phase to remove the residual oxidation products and other impurities, so as to obtain high-purity refined naphthalene

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The above is a detailed introduction about refined naphthalene manufacturers. I hope it will help you If you have any questions, please contact us We will provide you with professional service http://www.bofengdl.com