On-line detection system for preparing ethylene glycol with synthetic gas in industrial production

Abstract

The invention discloses an on-line detection system for preparing ethylene glycol with synthetic gas in the industrial production. The on-line detection system comprises an analyzing cabin, an intermediate infrared analyzer, an IPC, a PLC, a DCS, an SIS, a gas alarm, an anti-explosion draught fan, a police whistle and an alarm lamp, wherein the PLC is used for controlling the anti-explosion draught fan, the police whistle and the alarm lamp to work according to the gas concentration in the analyzing cabin measured by the gas alarm to take explosion precautions; the intermediate infrared analyzer is used for detecting the content of process gas and transmitting detection results to the IPC; the IPC is used for displaying and calculating the detection results and transmitting the detection results and calculation results to the PLC; the PLC is used for storing and judging the detection results and the calculation results, sending controlling signals to the SIS and sending data results to the DCS; the SIS is used for controlling an interlocking device according to the controlling signals; the DCS is used for displaying the data results and operated by operators to adjust and control the production technology according to displayed data. According to the invention, the problems in the prior art that the production technology for preparing the ethylene glycol with the synthetic gas is severely backward in detection and analysis, low in reaction efficiency, poor in security and stability, and the like are solved.

Description

technical field [0001] The invention relates to production process automation, in particular to a system for data collection, detection and analysis in the chemical production process. Background technique [0002] Such as figure 1 As shown, it is the current production process of syngas to ethylene glycol. The production process mainly includes four operating units: esterification unit, carbonylation unit, hydrogenation unit and refining unit. The raw materials used for the reaction and various The material transportation between the units is carried out by the process pipeline, the following is the combination figure 1 An introduction to the four units and the entire production process. [0003] Esterification unit [0004] The esterification unit includes a pre-reactor and an oxidative esterification tower, and the reactions involved are as follows: [0005] 2NO+O 2 =2NO 2 (1) [0006] NO+NO 2 =N 2 o 3 (2) [0007] 2CH 3 OH+N 2 o 3 =2CH 3 ONO+H 2 O (3)...

AI Technical Summary

Problems solved by technology

[0031] The purpose of the present invention is to provide an on-line detection system for industrial production of ethylene glycol from syngas to solve the problems of severe lag in detection and analysis, low reaction efficiency, and poor safety and stability in the current production process of ethylene glycol from syngas

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