What are naphthenes used for?
Naphthenes are an important component of liquid petroleum refinery products. Most of the heavier boiling point complex residues are cycloalkanes. Naphthenic crude oil is more readily converted into gasoline than paraffin-rich crudes are.
What are olefins and aromatics?
Petrochemicals, produced from petroleum, can be classified as olefins and aromatics [70]. Olefins include ethylene, propylene, and butadiene which are raw materials for making plastics. Aromatics include benzene, toluene, and xylene which are raw materials for making dyes and synthetic detergents.
Are olefins aromatics?
The two most common petrochemical classes are olefins (including ethylene and propylene) and aromatics (including benzene, toluene and xylene isomers). Olefins and aromatics are the building-blocks for a wide range of materials such as solvents, detergents, and adhesives.
What are mixed aromatics?
Mixed aromatics is a reformate and blenders use it to raise the octane number of gasoline. It contains over 65% of aromatic hydrocarbon mixture by volume, according to the General Administration of Customs.
What is olefins and aromatics?
Olefins and aromatics are the building-blocks for a wide range of materials such as solvents, detergents, and adhesives. Olefins includes ethene, propene, butenes and butadiene. Ethylene and propylene are important sources of industrial chemicals and plastics products. Butadiene is used in making synthetic rubber.
What is the difference between a paraffin and a naphtene?
Unlike olefins, which are straight-chain compounds, naphthenes are paraffins that have been “bent” into a ring or a cyclic shape. Naphthenes, like paraffins, are saturated compounds. Examples of naphthenes are cyclopentane, cyclohexane, and methylcyclohexane (Figure 3.3). Sign in to download full-size image
What is the difference between naphthenes and olefins?
Unlike olefins, which are straight-chain compounds, naphthenes are paraffins that have been “bent” into a ring or a cyclic shape. Naphthenes, like paraffins, are saturated compounds. Examples of naphthenes are cyclopentane, cyclohexane, and methylcyclohexane ( Figure 3.3 ).
How are aromatics separated from olefins?
Four packed silica columns in series are used to isolate the aromatics and provide ring number distribution. In addition, the silica columns provide separation of paraffins from the coeluting olefins and naphthenics. The olefins are trapped on a silver-loaded strong cation-exchange silica gel column and removed by back-flushing.
What is the difference between alkenes and paraffins?
The term ‘olefins’, also known as alkenes, are a large number of compounds that contain carbon and hydrogen and have at least one double bond in their structure. Paraffins, also known as alkanes, are a large number of compounds that contain carbon and hydrogen and have single bonds only (fully saturated).