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.

萘是四类一项，属于易燃固体类的危险化学品。危险货物编号是41511。

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

工业萘不属于危险废物。工业萘是化学工业中一种很重要的原料，其主要由煤焦油进一步加工分离制取，其在煤焦油中相对含量较高，在中国煤焦油中含量可达到8～12％，是焦油加工的重要产品。

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.

从工业萘制备精萘的新工艺,采用反应与精馏相结合方式,以工业萘为原料,过氧化氢为氧化剂,有机酸和无机酸为催化剂

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
 

工业萘生产是采用精馏的方法将含萘馏分进行分馏提取除产品工业萘。以焦油蒸馏提取出的含萘馏分作为工业萘生产原料到完成工业萘的生产过程分3个阶段，即原料预处理，初馏和精馏。

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℃温度下,10-80分钟,进行化学反应,使工业萘中的主要杂质硫茚被氧化成高沸点,水溶性氧化产物——亚砜或砜类,然后将水相分离掉,将有机相进行精馏以脱除残余的氧化产物及其它杂质,即可得到高纯度的精萘.

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.jnjdbc.cn