Gas chromatography on-line analysis method of methanol ammoxidation product
A technology of oxidation products and gas chromatography, which is applied in the field of gas chromatography online analysis of methanol ammoxidation products, can solve the problems of not being able to provide instantaneous product analysis results, time-consuming, and not being able to complete the analysis of all product components at one time.
Inactive Publication Date: 2018-04-06
HUAYANG NEW MATERIAL TECH GRP CO LTD
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This analysis method is not only time-consuming, but also difficult to give accurate analysis results on the composition of the gas phase reaction products, and the composition analysis results of the condensed liquid phase products are the average value of the reaction products in a certain period of time, which cannot provide instantaneous product analysis As a result, the full component analysis of the product cannot be completed at one time
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0022] 1. Gas chromatography on-line analysis method of methanol ammoxidation product, including the following steps:
[0023] 1.1. Establish an analysis system
[0024] Such as figure 1 As shown, the quantitative ring L1 is connected between port 1 and port 8 of the ten-way purge valve V1, and the pre-separation column PC-1 is connected between its port 2 and port 6, and its port 3 is connected to the damping tube CC-1, and its port 4 Connect the hydrogen automatic pressure controller APC-1 through the buffer column DC-1, connect the filled column MC-1 between its port 5 and the port 1 of the six-way purge valve V2, and connect its port 7 to the hydrogen automatic pressure controller APC- 1. The interface 9 is connected with the interface 6 of the six-way purge valve V3, and the interface 10 is used as the sample inlet.
[0025] Such as figure 1 A...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| boiling point | aaaaa | aaaaa |
| freezing point | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a gas chromatography on-line analysis method of a methanol ammoxidation product. According to the invention, a three-valve four-column system gas chromatography is used for performing an on-line primary analysis on the product obtained by ammoxidation synthesis of hydrogen cyanide by methanol. a standard substance contrast method is employed for determining natures of maincomponents in the product, and an external standard method is used for calculating volume fraction of gas in the product. Through detection verification of a standard gas sample, the established quantitative analysis method is reliable, relative error of a lowest content substance is less than 3%, and standard deviation is in an allowed scope.
Description
Technical field [0001] The invention belongs to the field of gas product detection for methanol ammoxidation to synthesize hydrocyanic acid, and is specifically a gas chromatography online analysis method for methanol ammoxidation products. Background technique [0002] Hydrocyanic acid (HCN) is a colorless liquid, highly toxic, miscible with water, boiling point 26°C, freezing point -14°C, and specific gravity 0.6878 (20 / 4°C). Hydrocyanic acid is a chemically very active substance, which can react with olefins, alkynes, aromatics, ammonium salts, organic alkyds, halogen compounds, etc. to undergo hydrocyanation, addition, electrophilic substitution, hydrogenation and halogenation. , Preparation of fine chemical products, widely used in pesticides, medicine, dyes, additives, daily chemicals, metallurgy, new chemical materials and agricultural high-efficiency compound fertilizers. Thousands of downstream products of hydrocyanic acid have great development potential. The process ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/20G01N30/68G01N30/66G01N30/46
CPCG01N30/02G01N30/20G01N30/46G01N30/66G01N30/68G01N2030/201
Inventor 琚裕波童明全潘蓉李超李健李振虎
Owner HUAYANG NEW MATERIAL TECH GRP CO LTD