The present embodiments provide an incinerator which includes a system for reducing NOx and CO emissions. A computational fluid dynamics module is configured to generate a plurality of models related to a plurality of incinerator parameters. A programmable logic controller dynamically maintains a plurality of set points. Further, the programmable logic controller receives a plurality of output signals from a plurality of sensors and compares the plurality of output signals with the plurality of set points. The programmable logic controller is further to affect an amount of above-fire combustion air, an amount of under-fire combustion air, and an amount of above-fire and under-fire flue gas recirculation to reduce NOx emissions produced by the incinerator.

A method for remediating a contaminated porous matrix including selecting the type and quantity of organic fuel to create a smolderable mixture of the organic fuel and contaminated porous matrix, and controlling the rate of oxidant addition to manipulate the relative proportions of oxidative breakdown products, non-oxidative breakdown products, and non-destructive remediation processes. The method further involves collecting the volatilized contaminant, and any gaseous breakdown products of the contaminant.

A gas combustion treatment device that subjects an ammonia-containing gas, a hydrogen cyanide-containing gas, and a hydrogen sulfide-containing gas to combustion treatment includes: a first combustion unit configured to introduce therein fuel, the ammonia-containing gas, the hydrogen cyanide-containing gas, and air and burn and reduce the fuel and the gases at an air ratio lower than 1; a second combustion unit provided downstream of the first combustion unit and configured to burn and reduce, in a reducing atmosphere, nitrogen oxide in a first combustion gas sent from the first combustion unit; and a third combustion unit provided downstream of the second combustion unit and configured to introduce therein hydrogen sulfide-containing gas with air in addition to a second combustion gas sent from the second combustion unit.

A system and method for flaring with a flare including a flare stack and a flare tip at a well site having a wellhead and a wellbore for production of crude oil or natural gas, or both, providing produced fluid including hydrocarbon from the wellhead to the flare stack, discharging the produced fluid from the flare tip through a nozzle discharge opening, combusting the hydrocarbon of the produced fluid as discharged from the flare tip, and a control system adjusting flow area of the nozzle discharge opening.

The invention relates to a burner as well as to a waste gas treatment device for generating a flame for the combustion of process gas, especially of contaminants, in a combustion chamber, in each case having feed lines for a fuel gas and for an oxidizing agent so that they flow into a pre-mixing chamber, and having an ignition device for igniting the gas mixture contained in the pre-mixing chamber. According to the invention, a sensor for detecting and/or monitoring the flame is provided on the burner, especially at one end of the burner situated opposite from the pre-mixing chamber.

Apparatus and methods for debinding articles. The apparatus and methods may transform binder from furnace exhaust before the exhaust is discharged to the atmosphere. The apparatus may include a furnace retort and a reactor. The furnace retort may be configured to: exclude ambient air; and receive a carrier gas. The reactor may be configured to: receive from the retort (a) the carrier gas and (b) material removed in the retort from the article; and combust, at a temperature no greater than 750 C., the material. The material may be decomposed binder. The material may be hydrocarbon from binder that is pyrolyzed in the retort. The carrier gas may include gas that is nonflammable gas.

The present disclosure provides methods and systems for modulating a solid-fuel-based combustion process. A current instantaneous heat release for a solid-fuel-based heat generator is determined at a virtual sensor. The current instantaneous heat release is compared to a current firing rate demand. When the current instantaneous heat release does not correspond to the current firing rate demand, an underfire air flow of the heat generator is adjusted.

The present disclosure provides methods and systems for modulating a solid-fuel-based combustion process. A current instantaneous heat release for a solid-fuel-based heat generator is determined at a virtual sensor. The current instantaneous heat release is compared to a current firing rate demand. When the current instantaneous heat release does not correspond to the current firing rate demand, an underfire air flow of the heat generator is adjusted.

The present embodiments provide an incinerator which includes a system for reducing NOx and CO emissions. A computational fluid dynamics module is configured to generate a plurality of models related to a plurality of incinerator parameters. A programmable logic controller dynamically maintains a plurality of set points. Further, the programmable logic controller receives a plurality of output signals from a plurality of sensors and compares the plurality of output signals with the plurality of set points. The programmable logic controller is further to affect an amount of above-fire combustion air, an amount of under-fire combustion air, and an amount of above-fire and under-fire flue gas recirculation to reduce NOx emissions produced by the incinerator.

An improved systems and methods to reduce and remove particulate matter and chemical pollutants from flue gasses. Specifically, the invention relates to waste incinerator furnaces and devices and methods for improved combustion, destruction and removal of undesirable particulate and gaseous environmental contaminants and pollutants.