Industrial naphthalene use

萘及萘系衍生物是化工重要原料之一，萘及萘系产品通常可由煤焦油与石油裂解焦油提取，有工业萘、精萘和甲基萘之分。煤焦油萘系产品硫含量高，而石油萘系产品硫含量低，更适于生产精萘、精甲基萘等。在石油化工行业的原油裂解生产乙烯的过程中，伴随联产大量的乙烯裂解焦油，以往尚无先进的分离专有技术，裂解焦油除了部分作为生产碳黑之外，更多的则作为燃料油，致使宝贵的化工原料流失浪费。萘及萘系产品广泛应用于合成树脂、涂料、医药、农药、轻工、塑料、助剂等行业，可用于制取苯酐、β-萘酚、甲萘胺、H酸、丁腈橡胶、增塑剂、扩散剂、抗凝剂等产品，应当加以充分地利用，使其发挥更大的经济效益。

Naphthalene and naphthalene derivatives are one of the important chemical raw materials. Naphthalene and naphthalene products can usually be extracted from coal tar and petroleum cracking tar, including industrial naphthalene, refined naphthalene and methyl naphthalene. Coal tar naphthalene products have high sulfur content, while petroleum naphthalene products have low sulfur content, which is more suitable for the production of refined naphthalene, refined methylnaphthalene, etc. In the process of crude oil cracking to produce ethylene in the petrochemical industry, with the co production of a large amount of ethylene cracking tar, there was no advanced separation proprietary technology in the past. In addition to the production of carbon black, cracking tar was used as fuel oil, resulting in the loss and waste of valuable chemical raw materials. Naphthalene and naphthalene series products are widely used in synthetic resin, coating, medicine, pesticide, light industry, plastics, additives and other industries, and can be used to prepare phthalic anhydride β- Naphthol, methylnaphthylamine, H acid, nitrile rubber, plasticizer, dispersant, anticoagulant and other products should be fully utilized to bring greater economic benefits into play.

工业萘危害

Industrial naphthalene hazard

侵入途径：吸入、食入、经皮吸收。

Invasion route: inhalation, ingestion and percutaneous absorption.

健康危害：具有刺激作用，高浓度致溶血性贫血及肝、肾损害。

Health hazard: it has stimulating effect, and high concentration will cause hemolytic anemia and liver and kidney damage.

急性中毒：吸入高浓度萘蒸气或粉尘时，出现眼及呼吸道刺激、角膜混浊、恶心、呕吐、食欲减退、腰痛、尿频、尿中出现蛋白及红白细胞。亦可发生视神经炎和视网膜炎。重者可发生中毒性脑病和肝损害。口服中毒主要引起溶血和肝、肾损害，甚至发生急性肾功能衰竭和肝坏死。

Acute poisoning: eye and respiratory tract irritation, corneal opacity, nausea, vomiting, anorexia, low back pain, frequent urination, protein and red and white blood cells in urine when inhaling high concentration naphthalene vapor or dust. Optic neuritis and retinitis can also occur. In severe cases, toxic encephalopathy and liver damage may occur. Oral poisoning mainly causes hemolysis, liver and kidney damage, and even acute renal failure and liver necrosis.

慢性中毒：反复接触萘蒸气，可引起乏力、恶心、呕吐和血液系统损害。可引起白内障、视神经炎和视网膜病变。皮肤接触可引起皮炎。

Chronic poisoning: repeated exposure to naphthalene vapor can cause fatigue, nausea, vomiting and blood system damage. It can cause cataract, optic neuritis and retinopathy. Skin contact can cause dermatitis.

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