1、精萘是最重要的有機(jī)化工原料。 針對(duì)目前精萘的實(shí)際生產(chǎn)情況，介紹國(guó)內(nèi)外精萘的4種主要生產(chǎn)方法：區(qū)域熔融法、分步結(jié)晶法、催化加氫法及動(dòng)態(tài)結(jié)晶法。

1. Refined naphthalene is the most important organic chemical raw material. Based on the current actual production situation of refined naphthalene, this article introduces four main production methods of refined naphthalene at home and abroad: regional melting method, stepwise crystallization method, catalytic hydrogenation method, and dynamic crystallization method.

2、萘，又稱(chēng)并萘，是一種無(wú)色有光澤的片狀結(jié)晶。不溶于水，易升華，能隨水蒸氣揮發(fā)，有特殊氣味。是工業(yè)上最重要的稠環(huán)芳烴，可用于生產(chǎn)、染料的中間體、橡膠助劑和殺蟲(chóng)劑。根據(jù)純度不同，萘可分為工業(yè)萘和精萘。工業(yè)萘的純度一般約為96%。

2. Naphthalene, also known as naphthalene, is a colorless and glossy crystalline flake. Insoluble in water, prone to sublimation, can evaporate with water vapor, and has a special odor. It is the most important polycyclic aromatic hydrocarbon in industry, which can be used as an intermediate in production, dyes, rubber additives, and insecticides. According to different purities, naphthalene can be divided into industrial naphthalene and refined naphthalene. The purity of industrial naphthalene is generally about 96%.

3、萘是工業(yè)上重要的稠環(huán)烴，主要用于生產(chǎn)、各種萘酚、萘胺等，是生產(chǎn)合成樹(shù)脂、增塑劑、染料的中間體、表面活性劑、合成纖維、涂料、農(nóng)藥、醫(yī)藥、香料、橡膠助劑和殺蟲(chóng)劑的原料。

3. Naphthalene is an important polycyclic hydrocarbon in industry, mainly used in the production of various naphthols, naphthylamines, etc. It is an intermediate in the production of synthetic resins, plasticizers, dyes, surfactants, synthetic fibers, coatings, pesticides, pharmaceuticals, spices, rubber additives, and insecticides.

4、精萘的自然屬性為：不溶于水、易升華、能隨水蒸氣揮發(fā)、有特殊氣味，它是一種無(wú)色有光澤的片狀結(jié)晶，可以用于生產(chǎn)、染料的中間體、橡膠助劑和殺蟲(chóng)劑，是工業(yè)上最重要的稠環(huán)芳烴，工業(yè)萘的純度一般約為96%。

4. The natural properties of refined naphthalene are: insoluble in water, easy to sublime, able to evaporate with water vapor, and having a special odor. It is a colorless and glossy crystalline flake that can be used as an intermediate in production, dyes, rubber additives, and insecticides. It is the most important polycyclic aromatic hydrocarbon in industry, and the purity of industrial naphthalene is generally about 96%.