Methods and systems for treating volatile organic compounds (VOCs) generated in a hydrocarbon treating process are disclosed. An effluent stream containing the VOCs, as well as carbon dioxide (CO.sub.2) is combined with hot exhaust gas from a turbine and provided to a waste heat recovery unit (WHRU). The WHRU is adapted to contain a catalyst bed containing oxidation catalyst capable of effecting the oxidation of the VOCs. The temperature of the catalyzing reaction can be tailored based on the position of the catalyst bed within the temperature gradient of the WHRU. The methods and systems described herein solve the problem of effecting the removal of VOCs from the effluent. Heating the CO.sub.2-containing effluent in the WHRU also lend buoyancy to the effluent, thereby facilitating its dispersal upon release.

A gas processing apparatus includes a duct, a partition plate and a liquid supply. The duct has therein a flow path through which a gas passes. The partition plate is configured to divide the flow path into multiple spaces, and is formed of a porous material, through which the gas passes, configured to retain a liquid. The liquid supply is configured to supply a dissolving liquid configured to dissolve a target component contained in the gas to the partition plate. The gas passing through the flow path is brought into contact with the dissolving liquid retained in the partition plate.

Disclosed is a hybrid system of carbon dioxide compact separation membrane and carbon recycling for an urban power plant for effluent carbon dioxide concentration control, including a blower into which an exhaust gas is input and which distributes the exhaust gas, a photo-culture process unit which receives the exhaust gas from the blower, performs a photo-culture process using microalgae, and discharges a first treatment gas, a mixing tank into which the exhaust gas supplied from the blower and the first treatment gas are input, a separation membrane process unit which receives a second treatment gas mixed in the mixing tank, and separates a third enriched gas from the second treatment gas using a plurality of separation membranes, a mineralization reaction unit which mineralizes carbon dioxide using the third enriched gas separated in the separation membrane process unit and discharges a third treatment gas to the mixing tank, a sensor unit which measures a carbon dioxide concentration discharged from each process using a plurality of sensors, and a control unit which controls operations of the photo-culture process unit, the separation membrane process unit and the mineralization reaction unit according to a carbon dioxide content of the inflow exhaust gas.

A method of optimising operating conditions in an abatement apparatus configured to treat an effluent stream from a processing tool and an abatement apparatus are disclosed. The method of optimising operating conditions in an abatement apparatus configured to treat an effluent stream containing PFC from a processing tool comprise: changing an operating parameter which controls an operating condition of the abatement apparatus; determining a change in a PFC concentration present in an exhaust stream of the abatement apparatus; and determining whether to retain the operating parameter based on the change in the PFC concentration. In this way, the concentration of PFC present in the exhaust can be used to determine whether the abatement apparatus is operating under the correct operating conditions or not.

A gas treatment device that treats a gas to be treated, including oxygen, introduced at a gas inlet and that exhausts a treated gas at a gas outlet, the gas treatment device includes: a gas channel that communicates the gas inlet with the gas outlet; a blower that allows the gas to be treated to flow from the gas inlet to the gas outlet; an ultraviolet light source that is disposed in the gas channel and radiates ultraviolet light having a wavelength of 230 nm or less; a filter that is disposed at a side at which the gas outlet is located from the ultraviolet light source in the gas channel, and that adsorbs at least ozone; and a control unit that controls the blower to operate, wherein the control unit controls the blower to start a blowing operation after the ultraviolet light source starts radiating the ultraviolet light.

A system and method for filtering exhaust gases of a vehicle is disclosed, that are based on an exhaust filter assembly includes an enclosure having an inlet coupled with an end of an exhaust pipe to allow exhaust gases of the vehicle into the enclosure, a filter element fitted with the enclosure to adsorb gaseous particles, moisture, and unburned fuel mist particles of the exhaust gases, sensors to sense gaseous particles adsorbed on the filter element, and generate first signals based on the sensed gaseous particles; a control unit; and a communication unit. The control unit includes processors to: receive the generated first signals, and generate second signals based on the received first signals. The communication is configured to transmit the second signals to computing devices of users to notify the users. Thermoelectric generator is adapted to convert heat energy of the exhaust gases into electric power.

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.

A method for controlling a chemical process, by preparing methanol, hydrogen sulfide, methyl mercaptan, hydrocyanic acid, acrolein, 3-methylthiopropionaldehyde, 5-(2-methylmercaptoethyl)-hydantoin, methionine, a salt of methionine, and a derivative of methionine. The method includes providing a training set TS1, wherein TS1 is process values PV1 and process values PV2 being correlated to one another, and/or laboratory values LV1 and process values PV2 being correlated to one another. The method includes training a processing unit on the training set TS1 to identify a pattern of correlation between one or more measured process variables and at least one process variable. The method includes developing a calibration function CF1 for a calibrated soft sensor from the identified pattern of correlation and predicting at least one operating parameter for the chemical process as an approximation to LV1 and/or PV1. A system for controlling a chemical process.

Systems and techniques may be used for incorporating direct air carbon dioxide capture capabilities into a working fluid condensing process of a geothermal power plant. An example technique may include causing, using fans, air to flow across condenser coils of a condensing unit, through which power cycle working fluid is circulated, and through a direct air capture (DAC) filtration component, which separates carbon from the air, capturing heat from a geothermal working fluid, and using the heat as thermal energy input to the DAC filtration component or using electrical energy generated from the geothermal power plant as electrical energy input to power the condensing unit and the DAC filtration component. The example technique may include gathering the carbon separated from the air to be injected into a geothermal reservoir or repurposed for another industrial process.

An exemplary embodiment of the present invention relates to an apparatus and method for removing nitrogen oxide from exhaust gas. The apparatus for removing nitrogen oxide from exhaust gas includes: a chamber through which exhaust gas is introduced and discharged; a nozzle injecting a solution, which reacts with the exhaust gas introduced into the chamber, into the chamber; and an electric dust collecting unit installed at a rear end of the chamber to be supplied with the exhaust gas processed in the chamber and including a discharge unit and a dust collecting unit.