CONTROL OF A PLANT FOR BURNING GASEOUS WASTES Russian patent published in 2020 - IPC B01J19/00 F23G7/06 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to a method of controlling a plant for burning gaseous wastes. Ammoxidation of a hydrocarbon selected from a group consisting of propane, propylene, isobutene, isobutylene and mixtures thereof, in the presence of ammonia and oxygen to obtain acrylonitrile, acetonitrile and hydrogen cyanide. Reagent stream is fed into ammoxidation reactor. Amount of hydrocarbon in the reagent flow is determined and the rate of reagent flow introduction is determined. Gaseous stream coming out of reactor is directed to absorber. Absorber gaseous wastes, as well as gaseous fuel and air are fed into the gaseous wastes combustion plant. Set of anticipatory parameters is used to change a set of manipulated parameters for controlling at least one set of monitored parameters. Pre-emption parameters include amount of hydrocarbon in reagent flow and rate of reagent flow introduction. Set of manipulated parameters includes a flow of gaseous fuel into the plant and an air flow into the combustion plant. Set of controlled parameters includes the amount of oxygen in the furnace gas of the plant and the temperature of the combustion plant.

EFFECT: minimizing the amount of gaseous fuel used in the apparatus for burning gaseous wastes of the absorber and improving control of emissions, reduction of temperature deviations in the furnace of the combustion plant and reduction of deviations of the amount of oxygen in the combustion gas of the combustion plant.

24 cl, 2 ex, 4 tbl, 2 dwg