Trace oxygen chromatograph

Trace oxygen compound chromatograph, naphtha whole component chromatograph, gas chromatography method; Tandem capillary chromatography column; Naphtha; Fourteen oxygen-containing compounds, including methyl tert butyl ether

Naphtha is the main raw material for producing ethylene, mainly composed of alkanes, cycloalkanes, aromatics, alkenes, trace amounts of sulfides, and trace amounts of metal and non-metal compounds such as oxygen, nitrogen, and chlorine. Its composition is complex, with over 300 detectable monomer hydrocarbons. Methyl tert butyl ether (MTBE) and other oxygen-containing compounds in naphtha are impurities. Once the content of MTBE and other oxygen-containing compounds in the cracking feedstock exceeds 1000 mg/kg, it will lead to an increase in alcohol content in propylene and ethylene after cracking, causing a decrease in production load and even shutdown, seriously endangering the safety of the equipment. Therefore, there is strict control over the MTBE content in raw materials in chemical production. The article explores the chromatographic conditions for the determination of oxygen-containing compounds in naphtha. A series capillary chromatography column is selected, and an automatic sampler is used for injection. Under appropriate operating conditions, a gas chromatography method is established for the simultaneous detection of trace amounts of 14 oxygen-containing compounds, including methyl tert butyl ether, in one injection. This method is easy to operate, has good separation effect and repeatability, and has achieved very good results in the production control and quality monitoring of chemical raw material naphtha.

Trace oxygen compound chromatograph, naphtha whole component chromatograph, gas chromatography method; Tandem capillary chromatography column; Naphtha; Fourteen oxygen-containing compounds, including methyl tert butyl ether

Naphtha is the main raw material for producing ethylene, mainly composed of alkanes, cycloalkanes, aromatics, alkenes, trace amounts of sulfides, and trace amounts of metal and non-metal compounds such as oxygen, nitrogen, and chlorine. Its composition is complex, with over 300 detectable monomer hydrocarbons. Methyl tert butyl ether (MTBE) and other oxygen-containing compounds in naphtha are impurities. Once the content of MTBE and other oxygen-containing compounds in the cracking feedstock exceeds 1000 mg/kg, it will lead to an increase in alcohol content in propylene and ethylene after cracking, causing a decrease in production load and even shutdown, seriously endangering the safety of the equipment. Therefore, there is strict control over the MTBE content in raw materials in chemical production. The article explores the chromatographic conditions for the determination of oxygen-containing compounds in naphtha. A series capillary chromatography column is selected, and an automatic sampler is used for injection. Under appropriate operating conditions, a gas chromatography method is established for the simultaneous detection of trace amounts of 14 oxygen-containing compounds, including methyl tert butyl ether, in one injection. This method is easy to operate, has good separation effect and repeatability, and has achieved very good results in the production control and quality monitoring of chemical raw material naphtha.

Trace oxygen compound chromatograph, naphtha whole component chromatograph, gas chromatography method; Tandem capillary chromatography column; Naphtha; Fourteen oxygen-containing compounds, including methyl tert butyl ether

Naphtha is the main raw material for producing ethylene, mainly composed of alkanes, cycloalkanes, aromatics, alkenes, trace amounts of sulfides, and trace amounts of metal and non-metal compounds such as oxygen, nitrogen, and chlorine. Its composition is complex, with over 300 detectable monomer hydrocarbons. Methyl tert butyl ether (MTBE) and other oxygen-containing compounds in naphtha are impurities. Once the content of MTBE and other oxygen-containing compounds in the cracking feedstock exceeds 1000 mg/kg, it will lead to an increase in alcohol content in propylene and ethylene after cracking, causing a decrease in production load and even shutdown, seriously endangering the safety of the equipment. Therefore, there is strict control over the MTBE content in raw materials in chemical production. The article explores the chromatographic conditions for the determination of oxygen-containing compounds in naphtha. A series capillary chromatography column is selected, and an automatic sampler is used for injection. Under appropriate operating conditions, a gas chromatography method is established for the simultaneous detection of trace amounts of 14 oxygen-containing compounds, including methyl tert butyl ether, in one injection. This method is easy to operate, has good separation effect and repeatability, and has achieved very good results in the production control and quality monitoring of chemical raw material naphtha.