[Product Name]Analysis of Oxygen Compounds in Ethanol Gasoline by Gas Chromatography
[Product Overview]The oxygen-containing compounds in gasoline refer to ether and alcohol compounds in gasoline. In modern gasoline blending processes, organic oxygen-containing compounds such as ethers (such as methyl tert butyl ether (MTBE)) and alcohols (such as ethanol) are often added to increase gasoline octane number and reduce carbon monoxide emissions in exhaust. However, the amount of oxygen-containing compounds added must be appropriately limited to avoid phase separation in gasoline and the resulting emissions
The issue of motivation performance or efficiency. In recent years, with the deepening of the concept of health and environmental protection, the production of clean gasoline has put forward new requirements for analytical methods. Therefore, timely and accurate detection of the content of oxygen-containing compounds in gasoline has become a problem that must be solved in the product testing and analysis technology of petroleum refining enterprises.
【 Scope of use 】 Tengzhou ZhongkepuOn the basis of SH/T 0663, the analysis method of oxygen-containing compounds in gasoline has been improved, and the analysis points have been introduced. This method has high accuracy and good repeatability in analysis, and has been validated in practical applications in refineries
[Analysis Method]After adding an appropriate internal standard (ethylene glycol dimethyl ether) to the sample, the sample is directed into a gas chromatograph equipped with two columns and a column switching valve. The sample first flows into the TCEP pre cut column, where light hydrocarbons are flushed and vented while retaining oxygen-containing compounds and heavier hydrocarbon components. After methylcyclopentane, but before MTBE flows out of the pre cut column, the valve is switched to the blowback position to allow oxygen-containing compounds to enter the analysis column. Before any heavy hydrocarbons are separated, flush out the alcohols and ethers from the analytical column. After the benzene and tert amyl methyl ether flow out of the analytical column, switch the column back to the starting position to blow back heavy hydrocarbon components. Detect the components flowing out through a flame ionization detector, and based on the components
Calculate the peak area and refer to the internal standard to determine the concentration of each component
[Product Configuration]

1. Instrument host:GC-2020Kepu brand in gas chromatography

2. FIDdetector+Capillary injection system+Automatic ten way valve switching (with blowback function)

3. Data processing: Chromatography workstation (computer printer self equipped)

4. Chromatographic column:50Mi capillary column

5. Gas source: nitrogen hydrogen air generator

6. Random attachments

Analysis conditions

Peak Number Peak name Retention peak height peak area content

1 benzene9.248 2005.368 11131.800 0.1814

The gas chromatograph for the analysis of oxygen-containing compounds in ethanol gasoline meets the requirements for the determination of oxygen-containing compound content in gasoline. It is easy to operate and can be applied to the quality control of gasoline production