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Process Control Using Raman Spectroscopy

A technology of Raman spectroscopy and properties, which is applied to the system for detecting feed flow and discharge flow, and the field of monitoring feed flow and discharge flow, which can solve the problems of system condition lag time and long test time of gas chromatography.

Active Publication Date: 2016-11-09
LYONDELL CHEM TECH LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Additionally, gas chromatography may require longer test times, e.g. up to and exceeding 15 minutes
Therefore, there is a lag time in system conditions when samples are taken and when results are obtained

Method used

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  • Process Control Using Raman Spectroscopy
  • Process Control Using Raman Spectroscopy
  • Process Control Using Raman Spectroscopy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0061] To show that Raman spectroscopy can be used to determine the properties of samples during hydroformylation or hydrogenation, laboratory tests were performed on samples of alkenyl alcohols. Prepare a series of allyl alcohol-toluene solutions with different concentrations, as shown in Table 1 below:

[0062] Table 1

[0063] standard

Allyl Alcohol Percentage

1

0.0000

2

0.9965

3

2.0487

4

3.0434

5

5.0054

6

9.8841

7

14.8933

8

19.7040

[0064] Samples with different allyl alcohol concentrations were analyzed using Raman spectroscopy. During analysis of the samples, 780 nm excitation was used at 100% power through a 50 μm slit. Samples were acquired in 28x4 secondary acquisitions and calibration curves were drawn using the chemometric model.

[0065] brief reference figure 2 , according to an embodiment of the present invention, the figure shows the calibration curve of the sample. ...

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Abstract

Embodiments of the invention include methods of effectuating process control in a reaction system for the production of 1,4-butanediol, the method comprising determining at least one property of a sample of the reaction system using Raman spectroscopy, and responding to The at least one determined property modulates at least one parameter of the reaction system. Embodiments may also include a method of producing 1,4-butanediol comprising reacting allyl alcohol with carbon monoxide and hydrogen in the presence of a solvent and a catalyst to produce a reactor fluid, sampling the reaction, At least one property of the sample is determined using Raman spectroscopy, and a response is adjusted in response to the at least one determined property.

Description

technical field [0001] Embodiments disclosed herein relate to systems and methods for increasing the production efficiency of 1,4-butanediol, and more specifically, embodiments disclosed herein relate to processes for the production of 1,4-butanediol Systems and methods for monitoring feed streams and discharge streams. More specifically, embodiments disclosed herein relate to systems and methods for monitoring feed and effluent streams during the production of 1,4-butanediol using Raman spectroscopy. Background technique [0002] This section presents information in the art that may relate to or provide background for some aspects of the technology described herein and / or the technology claimed below. This information is provided to facilitate a better understanding of the context of the disclosure herein. This is a discussion about "related" technologies. This technology does not mean at all that it is also "prior" technology. The related art may or may not be prior ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C29/94C07C31/20B01J19/24
CPCC07C29/141C07C29/16C07C31/207C07C29/172C07C29/44C07C29/48
Inventor D·F·怀特B·A·萨里斯伯里J·M·奥兰奥斯门特
Owner LYONDELL CHEM TECH LP