Industrial naphthalene use

萘及萘系衍生物是化工重要原料之一，萘及萘系產品通常可由煤焦油與石油裂解焦油提取，有工業(yè)萘、精萘和甲基萘之分。煤焦油萘系產品硫含量高，而石油萘系產品硫含量低，更適于生產精萘、精甲基萘等。在石油化工行業(yè)的原油裂解生產乙烯的過程中，伴隨聯(lián)產大量的乙烯裂解焦油，以往尚無先進的分離專有技術，裂解焦油除了部分作為生產碳黑之外，更多的則作為燃料油，致使寶貴的化工原料流失浪費。萘及萘系產品廣泛應用于合成樹脂、涂料、醫(yī)藥、農藥、輕工、塑料、助劑等行業(yè)，可用于制取苯酐、β-萘酚、甲萘胺、H酸、丁腈橡膠、增塑劑、擴散劑、抗凝劑等產品，應當加以充分地利用，使其發(fā)揮更大的經濟效益。

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.

工業(yè)萘危害

Industrial naphthalene hazard

侵入途徑：吸入、食入、經皮吸收。

Invasion route: inhalation, ingestion and percutaneous absorption.

健康危害：具有刺激作用，高濃度致溶血性貧血及肝、腎損害。

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

急性中毒：吸入高濃度萘蒸氣或粉塵時，出現眼及呼吸道刺激、角膜混濁、惡心、嘔吐、食欲減退、腰痛、尿頻、尿中出現蛋白及紅白細胞。亦可發(fā)生視神經炎和視網膜炎。重者可發(fā)生中毒性腦病和肝損害?？诜卸局饕鹑苎透?、腎損害，甚至發(fā)生急性腎功能衰竭和肝壞死。

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：反復接觸萘蒸氣，可引起乏力、惡心、嘔吐和血液系統(tǒng)損害。可引起白內障、視神經炎和視網膜病變。皮膚接觸可引起皮炎。

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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