Solvent naphtha (Solvent naphtha)

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Solvent naphtha

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Solvent naphtha
Solvent naphtha (petroleum), heavy aromatic

64742-94-5

2933990090

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Product Description

Heavy aromatic hydrocarbons refer to mixed aromatic hydrocarbons with molecular weight greater than xylene. Mainly derived from reformed heavy aromatics, cracked gasoline heavy aromatics and coal tar. It is a mixed aromatic hydrocarbon with carbon nine aromatics as the main component. It can be directly used as a raw material for gasoline, high boiling point solvent, petroleum resin, carbon black, etc. The main components can also be separated and further utilized through separation methods. With the rapid development of China's oil and coal processing industry, the output of heavy aromatic oil has increased by a large Chemicalbook. The composition of heavy aromatic hydrocarbons is very complex. According to reports on the analysis results, there are more than 100 components. Although the content of each component changes with the changes of its production process parameters and actual operation, its main components and Its content is basically stable. For example, the reformed aromatic hydrocarbons contain about 40% trimethylbenzene, 30% methylethylbenzene, mesitylene and mesitylene. These components are very valuable organic chemical raw materials.

Nature Description

Appearance and shape: colorless transparent liquid, aromatic hydrocarbon odor. Ice/melting point (℃):-45, boiling point range (℃):140-185, Flash Point (℃):40, ignition temperature (℃):450, solubility: insoluble in water. Soluble in ethanol and benzene.

Product Applications

Can be directly used as raw materials for gasoline, high boiling point solvent, petroleum resin, carbon black, etc.

Production method

Distillation separation: the chemical products with high utilization value of aromatics solvent oil, mesitylene, naphthalene and methyl naphthalene are separated according to different components of heavy aromatic hydrocarbons. HAD process: HAD process adopts thermal dealkyl technology route, that is, no catalyst is used in the reaction process, the process is simple, hydrogen consumption is uniform, but the reaction temperature is very high. It mainly converts heavy aromatic hydrocarbons into highly pure benzene and produces 100kt benzene annually. The process uses a piston flow thermal reactor. The raw materials are mainly aromatic hydrocarbons, containing l 6.8% C10 aromatic hydrocarbons, a small amount of aromatic hydrocarbons and non-aromatic hydrocarbons, and the yield can reach 95%, the yield is close to the yield of benzene produced by hydrodealkylation of toluene thermal Chemicalbook, but the hydrogen consumption is higher than that of toluene feed, and new heavy aromatic hydrocarbons are generated at the same time. Detol process: Detol process adopts the technical route of catalytic hydrodealkylation, uses fiexed bed reactor, the catalyst is cr203/al203, and the daily processing capacity is 45000~378500 m3. The raw materials are heavy aromatic hydrocarbons, benzene and a small amount of toluene with mass fraction of 85.4% and 11.3% respectively. HAL process: This process was developed by Beijing Academy of stone Sciences.