A gas chromatograph for hydrocarbon component analysis of a catalytic cracking product of gasoline and diesel

A gas chromatograph and catalytic cracking technology, which is applied in the direction of analyzing materials, instruments, scientific instruments, etc., can solve the problems of complex design and configuration of twelve-way valves, and achieve the effect of simple structure, simple operation and strong practicability

Active Publication Date: 2015-06-24
EAST CHINA NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it needs one auxiliary gas, one pre-cut backflush column, and the design and configuration of the 12-way valve is relatively complicated

Method used

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  • A gas chromatograph for hydrocarbon component analysis of a catalytic cracking product of gasoline and diesel
  • A gas chromatograph for hydrocarbon component analysis of a catalytic cracking product of gasoline and diesel
  • A gas chromatograph for hydrocarbon component analysis of a catalytic cracking product of gasoline and diesel

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Experimental program
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Embodiment

[0030] refer to figure 1 , the instrument is in standby mode, the carrier gas N 2The circuit is: carrier gas inlet → three-way stop valve 1 middle path → three-way stop valve 1 right path → six-way valve channel 1 → six-way valve channel 2 → eight-way valve channel 21 → eight-way valve channel 22 → chromatographic column 1 → Three-way stop valve 2 left → three-way stop valve 2 middle → FID detector; sample 1 circuit is: six-way valve channel 4 → six-way valve channel 3 → quantitative tube 1 → six-way valve channel 6 → six-way valve channel 5. Sample 2 circuit is: eight-way valve channel 26→eight-way valve channel 25→quantitative tube 2→eight-way valve channel 28→eight-way valve channel 27; in column selection, from three-way stop valve 1 to chromatographic column 2 The detailed route to the three-way stop valve 2 is: three-way stop valve 1 left path → eight-way valve channel 23 → eight-way valve channel 24 → chromatographic column 2 → three-way stop valve 2 right path.

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Abstract

The invention discloses a gas chromatograph for hydrocarbon component analysis of catalytic cracking products of gasoline and diesel. The gas chromatograph consists of three-way stop valves, a six-way valve, an eight-way valve, chromatographic column columns and a FID detector. Through switching of valve columns, low carbon hydrocarbon components of C1~C5 and high carbon hydrocarbon components of C6 and above of catalytic cracking products of gasoline and diesel can be determined separately at the same time. The gas chromatograph can be used in oil refineries and study of catalytic cracking reaction mechanism in colleges and the like. The gas chromatograph is of convenient operation, is of strong practicability, is of simple structure and is of low cost.

Description

technical field [0001] The invention relates to an analysis instrument for analyzing catalytic cracking products, in particular to a gas chromatograph for analyzing hydrocarbon components of gasoline and diesel catalytic cracking products. Background technique [0002] Catalytic cracking reaction of gasoline and diesel is a common method for performance evaluation and mechanism research of cracking catalysts. When a single gasoline and diesel model component such as certain alkanes or olefins in C6~C16 is selected as a raw material, the cracked products are mainly low-carbon hydrocarbons of C1~C5 and C6 + The qualitative and quantitative analysis of these components, especially the C1~C5 low-carbon hydrocarbon components, has important practical significance for the study of cracking mechanism. C1~C5 low-carbon hydrocarbon components have lower boiling points and similar properties, especially the analysis of C4 olefins is more difficult. Currently, Al 2 o 3 The packe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/88
Inventor 薛青松王一萌何鸣元
Owner EAST CHINA NORMAL UNIV
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