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Method for all-component one-step determination of synthesis gas reaction product by gas chromatography internal standard method

A gas chromatography and reaction product technology, applied in the field of analytical chemistry, can solve problems such as complex components, incomplete analysis of synthesis gas products, and inability to meet production needs.

Pending Publication Date: 2021-09-10
SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The efficient utilization of syngas is an important basis for the diversified development of modern coal chemical industry. The high-selectivity conversion of syngas to low-carbon olefins, high-octane gasoline, aromatics, oxygenates and other high value-added chemicals has always been the key point of syngas chemistry. Research hotspots and difficulties. However, the analysis of syngas products in most literatures is not comprehensive, the chromatographic conditions are not clear, and the components in the actual products are relatively complex, so they cannot meet the existing production needs.

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  • Method for all-component one-step determination of synthesis gas reaction product by gas chromatography internal standard method
  • Method for all-component one-step determination of synthesis gas reaction product by gas chromatography internal standard method
  • Method for all-component one-step determination of synthesis gas reaction product by gas chromatography internal standard method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for one-step determination of synthesis gas reaction products by gas chromatography internal standard method, comprising the following steps:

[0046] (1) Prepare mixed standard gas:

[0047] Including the mixed standard gas of hydrocarbons, the mixed standard gas of oxygen-containing compounds, and the mixed standard gas of permanent gases; the concentration of each component in the mixed standard gas is as follows:

[0048] In the mixed standard gas of hydrocarbons: methane 0.1-0.51%, ethane 0.01-5.0%, propane 0.01-1.0%, n-butane 0.01-1.0%, isobutane 0.01-1.0%, ethylene 0.01-1.0% , 0.01-1.0% propylene, 0.01-1.0% n-butene, 0.01-1.0% isobutene, 0.01-1.0% cis-butene, 0.01-1.0% trans-butene, and the rest is balance gas (N 2 or He or Ar);

[0049] The oxygen-containing compound mixed standard gas: acetaldehyde 0.01-5.0%, methyl acetate 0.1-10.0%, methanol 0.1-10.0%, ethanol 0.1-10.0%, methyl acrylate 0.01-1.0%, propanol 0.01-1.0% , isopropanol 0.01-1.0%, butano...

Embodiment 2

[0069] A method for one-step determination of synthesis gas reaction products by gas chromatography internal standard method, comprising the following steps:

[0070] (1) Prepare mixed standard gas:

[0071] Including the mixed standard gas of hydrocarbons, the mixed standard gas of oxygen-containing compounds, and the mixed standard gas of permanent gases; the concentration of each component in the mixed standard gas is as follows:

[0072] In the mixed standard gas of hydrocarbons: 0.1% methane, 0.01% ethane, 0.01% propane, 0.01% n-butane, 0.01% isobutane, 0.01% ethylene, 0.01% propylene, 0.01% n-butene, isobutene 0.01%, cis-butene 0.01%, trans-butene 0.01%, the rest is the balance gas He;

[0073] The oxygen-containing compound mixed standard gas: 0.01% of acetaldehyde, 0.1% of methyl acetate, 0.1% of methanol, 0.1% of ethanol, 0.01% of methyl acrylate, 0.01% of propanol, 0.01% of isopropanol, 0.01% of butanol, Dimethyl ether 0.1%, the rest is equilibrium gas He;

[0074...

Embodiment 3

[0093] A method for one-step determination of synthesis gas reaction products by gas chromatography internal standard method, comprising the following steps:

[0094] (1) Prepare mixed standard gas:

[0095] Including the mixed standard gas of hydrocarbons, the mixed standard gas of oxygen-containing compounds, and the mixed standard gas of permanent gases; the concentration of each component in the mixed standard gas is as follows:

[0096] In the mixed standard gas of hydrocarbons: methane 0.25%, ethane 5.0%, propane 1.0%, n-butane 1.0%, isobutane 1.0%, ethylene 1.0%, propylene 1.0%, n-butene 1.0%, isobutene 1.0%, cis-butene 1.0%, anti-butene 1.0%, the rest is balance gas Ar;

[0097] The oxygen-containing compound mixed standard gas: 5.0% of acetaldehyde, 10.0% of methyl acetate, 10.0% of methanol, 10.0% of ethanol, 1.0% of methyl acrylate, 1.0% of propanol, 1.0% of isopropanol, 1.0% of butanol, Dimethyl ether 10.0%, the rest is the balance gas Ar;

[0098] The permanent...

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Abstract

The invention provides a method for all-component one-step determination of a synthesis gas reaction product by a gas chromatography internal standard method. The method comprises the following steps: (1) preparing mixed standard gas; (2) preparing a standard gas of an internal standard substance; (3) establishing gas chromatographic analysis conditions; (4) establishing an internal standard substance standard curve; (5) calculating a relative correction factor; and (6) detecting a synthesis gas detection sample. According to the method provided by the invention, all components in the synthesis gas are quantitatively analyzed by adopting an internal standard method, so that methane, ethane, propane, n-butane, iso-butane, ethylene, propylene, n-butene, isobutene, cis-butene, trans-butene, acetaldehyde, methyl acetate, methanol, ethanol, methyl acrylate, propanol, isopropanol, butanol, dimethyl ether, H2, CO2, N2, CO, CH4 and the like in the synthesis gas can be measured in one step, and effective separation and accurate quantification of various mixtures are realized; and the method has the advantages of high accuracy, good precision, high stability and the like.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry, and in particular relates to a method for one-step determination of synthesis gas reaction products by a gas chromatography internal standard method. Background technique [0002] The efficient utilization of syngas is an important basis for the diversified development of modern coal chemical industry. The high-selectivity conversion of syngas to low-carbon olefins, high-octane gasoline, aromatics, oxygenates and other high value-added chemicals has always been the key point of syngas chemistry. Research hotspots and difficulties. However, the analysis of syngas products in most of the current literature is not comprehensive, the chromatographic conditions are not clear, and the components in the actual products are relatively complex, so they cannot meet the existing production needs. Therefore, it is of great practical significance to establish a set of full-component analysis meth...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/04G01N30/86G01N30/68G01N30/66
CPCG01N30/02G01N30/04G01N30/8634G01N30/68G01N30/66G01N30/8679G01N2030/045G01N2030/8854G01N2030/884
Inventor 张磊郭淑静葛元征袁亚飞陈佑涛刘星
Owner SHAANXI YANCHANG PETROLEUM GRP