Halogen selective detection gas chromatography for the on-line analysis and control of selective oxidation chemical production processes
AssigneeMultiPhase Solutions, Inc.
InventorsJames D. Buchner, Sr., James D. Buchner, Jr.
Life of this patent
Estimating the term…
Abstract
A method for process monitoring and control of a chemical reactor in which a chemical reaction utilizing a halogenated selectivity modifier is performed includes: measuring a level of halogenated components in an inlet stream of a reactor inlet; measuring a level of halogenated components in an outlet stream of a reactor outlet; based on the level of halogenated components at the inlet stream and the outlet stream, determining a process performance indicator associated with a halogenated component; and adjusting an amount of halogenated selectivity modifier added to the reactor based on the process performance indicator.
Claims25
A method for ongoing process monitoring and control of a chemical reactor in which a chemical reaction utilizing a halogenated selectivity modifier is performed, the method comprising ongoing performance of the following steps comprising:
- measuring levels of a plurality of different species of halogenated components in an inlet stream of a reactor inlet of the chemical reactor;
- measuring levels of the plurality of different species of halogenated components in an outlet stream of a reactor outlet of the chemical reactor;
- based on the measured levels of the plurality of different species of level of halogenated components at the inlet stream and the outlet stream, determining a process performance indicator comprising a halide mass balance;
- and
- adjusting an amount of the halogenated selectivity modifier added to the reactor, an amount of reactor feedstock, a flow rate, and/or a reactor temperature, based on the process performance indicator;
- wherein the levels of a plurality of different species of halogenated components in the inlet stream and outlet stream is measured with a halogen-selective detector, wherein the halogen-selective detector comprises a gas chromatography detector.
A system for ongoing process monitoring and control of a chemical reactor in which a chemical reaction utilizing a halogenated selectivity modifier is performed comprising:
- a chemical reactor in which a chemical reaction occurs which utilizes a halogenated selectivity modifier, wherein the chemical reactor comprises:
- an inlet comprising an inlet stream comprising reactants and a plurality of different species of halogenated components;
- and
- an outlet comprising an outlet stream comprising reactants, products, and a plurality of different species of halogenated components;
- a halogen-selective detector in fluid communication with the inlet stream and the outlet stream of the chemical reactor and configured for ongoing measurement of levels of the plurality of different species of halogenated components in the inlet stream and the outlet stream, wherein the levels of the plurality of different species of halogenated components in the inlet stream and outlet stream is measured with a halogen-selective detector, wherein the halogen-selective detector comprises a gas chromatography detector;
- an analyzer configured for ongoing determination of a process performance indicator comprising a halide mass balance based on the levels of the plurality of different species of halogenated components in the inlet stream and outlet stream;
- and
- a modifier input configured for ongoing adjustment of an amount of halogenated selectivity modifier added to the chemical reactor based on the process performance indicator.
A method for ongoing process monitoring and control of a chemical reactor in which a chemical reaction utilizing a halogenated selectivity modifier is performed, the method comprising ongoing performance of the following steps comprising:
- providing an inlet and outlet reactor sample stream of the chemical reactor;
- providing a gas chromatograph comprising a halogen selective detector in fluid communication with the reactor inlet or outlet stream;
- and
- analyzing a level of each of a plurality of different species of halogenated selectivity modifier compounds in the reactor inlet and outlet streams to monitor or control modifier addition rates,
- wherein the plurality of different species of halogenated selectivity modifier compounds analyzed in the reactor inlet and outlet streams comprises methyl chloride, vinyl chloride, ethyl chloride, ethylene dichloride, allyl chloride, and optionally all other organic and/or inorganic species of halogenated components contained in the inlet stream and outlet stream.
Dependencies are inferred from the claim text.