A method for the post-combustion of exhaust gases comprising carbon monoxide from metallurgical processes includes conditioning the exhaust gas prior to post-combustion by metering a combustion gas and/or one additional gas in feedback-controlled fashion. The feedback control depends on the composition of the exhaust gas dependent on the exhaust gas volume flow. A device for post-combustion of exhaust gas during vacuum treatment of liquid steel comprises a flare stack at an exhaust outlet, means for feeding combustion gas to the flare stack, means for feeding an inert gas into the exhaust gas channel of the vacuum pump, means for ascertaining the exhaust gas volume flow and/or for measuring the exhaust gas velocity within the exhaust gas channel, means for analyzing the exhaust gas composition, means for metering the combustion gas and the inert gas, and means for feedback control of the metering of the combustion gas and/or the inert gas dependent on the exhaust gas composition.

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.

Provided is a vacuum pump that can realize energy conservation when performing abatement of exhaust gas.

A vacuum pump that sucks in and exhausts exhaust gas includes a motor serving as a drive source, and a first controller that controls driving of the motor. The first controller monitors a state of the motor, and in a case in which the state of the motor is a specific state excluding when starting up and when stopped, outputs a specific signal (process signal) to an external entity.

A regenerative thermal oxidizer (RTO) with three or more chambers. Each chamber would be in a unique mode, (inlet, outlet, purge). Each chamber has its gas flow determined by two poppet valves which define which mode the chamber will be in: inlet mode, output mode, or purge mode.

A synergetic system for waste treatment is provided. The synergetic system includes a waste treatment system configured to perform biological treatment of waste. Additionally, the synergetic system includes a gas purification system configured to purify exhaust gas generated during the biological treatment of the waste. The synergetic system further includes a feeding system configured to feed excess heat from the gas purification system back to the waste treatment system. The waste treatment system is further configured to use the fed back excess heat for the biological treatment of the waste.

Flare gas is recovered by varying a number of ejector legs that depends on a flare gas flowrate. The ejector legs include ejectors piped in parallel, each ejector has a flare gas inlet and a motive fluid inlet. Flare gas and motive fluid is provided to ejectors by selectively opening or closing valves. The number of ejector legs online is varied to accommodate the amount of flare gas. The controller is also programmed to direct signals to actuators attached to the valves to open or close the valves, or to change the capacity of the ejector legs so they can handle changing flowrates of the flare gas. Included is a flare gas storage system with vessels made with flexible material, when flare gas is evacuated from the vessels, pressure in the vessels is maintained by compressing the vessels with an external force.

An oxidizer head assembly includes a head body defining an inlet flange, an outlet flange, and a wall, where the inlet flange, the outlet flange, and the wall define a cavity positioned between the inlet flange and the outlet flange, a plurality of nozzles extending through the cavity, a fuel inlet in communication with the plurality of nozzles, where a fuel passes through the fuel inlet and the plurality of nozzles, a shield gas inlet in communication with the cavity, and a porous diffuser plate extending across the outlet opening, the porous diffuser plate including apertures for the plurality of nozzles and a plurality of pores, where a shield gas passes through the shield gas inlet, through the cavity, and through the plurality of pores of the porous diffuser plate around the plurality of nozzles.

The disclosure is directed to a process and an apparatus for recovering energy from the low energy density waste gas stream. The process and the apparatus allow a thermal oxidizer to oxidize the low energy density waste gas stream using a low energy density fuel gas such as syngas, BF gas, or biogas without the need for auxiliary high energy density sources.

A method and apparatus which provides the ability to capture natural gas which would otherwise be vented from control valves and use the captured natural gas to power a low pressure pilot light of a burner and/or to power a natural gas engine. In one embodiment, the captured natural gas can be supplemented with an additional supply of natural gas to ensure operation of the pilot and/or natural gas engine in the even that the captured natural gas is not sufficient to provide continuous power of the pilot and/or engine. Optionally, the captured natural gas can be sequestered in a storage vessel.

Systems and methods include a computer-implemented method for monitoring emissions in real time. Flaring emissions are determined in real time for a flare stack based on: 1) a flaring volume in conjunction with heat and material balances of systems that discharge to a flare system, and 2) a composition of each relief source that discharges to the flare system. A molar balance around the flare stack is performed in real time using the flaring emissions to determine the emissions.