Some embodiments are directed to a generator and separator assembly for generating ions via atmospheric pressure, low temperature plasma and separating the generated ions. The generator and separator assembly include a plasma generator for generating the generating atmospheric pressure, low temperature plasma that is configured to eject positively and negatively ions. A separator is disposed to receive the positively and negatively ions ejected from the plasma generator, and includes a first separator electrode; a second separator electrode spaced from the first separator electrode; and a separator power supply that supplies electric power in the form of at least one of different voltages and different polarities to the first and second electrodes ranging from 0 kV and 10 kV, such that the received positively charged ions are redirected in one direction and the received negatively charged ions are redirected to another direction different from the one direction.

Some embodiments are directed to a decomposing and collection apparatus for use with a fluid. The apparatus includes an assembly for generating ions via applying atmospheric pressure, low temperature plasma to the fluid and separating the generated ions. The assembly includes multiple plasma generator and separator units that are vertically stacked relative to each other. Each of the multiple plasma generator and separator units includes a plasma generator for generating the generating atmospheric pressure, low temperature plasma, and a separator disposed to receive the positively and negatively ions ejected from the plasma generator and configured to redirect the received positively charged ions in one direction and the received negatively charged ions are redirected to another direction different from the one direction. The apparatus also includes a collector configured to collect at least one of the redirected positively charged ions and the negatively charged ions.

The present inventive concept relates to a device for treating an exhaust gas, and more particularly, to a plasma device capable of, even when connected to a vacuum pump, extending a lifetime of an electrode of a plasma torch. In the plasma device according to the present inventive concept, since an orifice is installed in a connection unit for connection with a vacuum pump to prevent a decrease in pressure of the vacuum pump, a pressure of a plasma reaction unit including the plasma torch of the plasma device can be maintained similar to normal pressure, thereby reducing the wear of a tungsten electrode in the plasma torch to extend a lifetime of the electrode.

A method and system to treat emissions (e.g., smoke, particulate, odor, grease) employs a nanosecond high voltage pulse generator, a transient pulsed plasma reactor, and a DC voltage source that supplies a DC bias voltage, preferably a negative DC bias voltage to a conductor of the transient pulsed plasma reactor. The system is used in a scheme that substantially reduces at least particulate matter in emissions streams, for example emissions streams produced during cooking, for instance in commercial charbroiling processes (e.g., cooking of hamburger meat), or from operation of internal combustion engines. Both a reduction in the size distribution and total particulate mass is achieved using the method and system described herein.

An exhaust pipe apparatus according to an embodiment includes a dielectric pipe; a radio-frequency electrode; and a plasma generation circuit. The exhaust pipe apparatus functions as a part of an exhaust pipe disposed between a process chamber and a vacuum pump that exhausts gas inside the process chamber. The radio-frequency electrode includes a thin metal plate disposed on an outer periphery side of the dielectric pipe, a buffer member disposed on an outer periphery side of the thin metal plate, and a conductive hollow structure disposed on an outer periphery side of the buffer member and a radio-frequency voltage is applied to the radio-frequency electrode. The plasma generation circuit generates plasma inside the dielectric pipe.

According to one embodiment of the present disclosure, there can be provided a plasma generating device for performing plasma discharge, the plasma generating device having multiple operation modes including a first mode and a second mode, and including: a first power supply capable of changing a frequency within a first frequency range; a second power supply capable of changing a frequency within a second frequency range that is at least partially different from the first frequency range; a dielectric tube; and an antenna module including a first unit coil wound around the dielectric tube at least one time, a second unit coil wound around the dielectric tube at least one time, and a first capacitor connected in series between the first unit coil and the second unit coil.

The instant invention is based on techniques for using non-thermal plasma reactors in both the main exhaust pipe and in the exhaust gas recirculation feed pipe to reduce particulate matter sufficiently to meet EPA limits for PM and enhanced exhaust gas recirculation to meet NOx limits. More specifically, it is based upon the use of a non-thermal plasma device in which a high voltage charge in the plasma reactor causes extremely rapid oxidation of soot particles in the exhaust stream of an engine and further chemical reactions that aid in the reduction of NOx. The primary benefit of this technology is that it can be calibrated to optimize both soot and NOx reduction.

An object of the present invention is to provide a non-equilibrium plasma (NEP) system and method of refining syngas. In accordance with an aspect of the present invention, there is provided a non-equilibrium plasma system for refining syngas, the system comprising a reactor with a hollow chamber, having one or more inlet manifolds configured to promote an axially symmetric and swirling flow pattern, into which syngas and one or more gasifying agents are introduced for processing within the reactor, a high voltage electrode; and a ground electrode, wherein the system is configured to create a non-equilibrium plasma producing electric arc upon application of a high voltage potential across an arc initiating gap between the high voltage electrode and the ground electrode and wherein the system is configured such that the syngas, the one or more gasifying agent(s) and plasma producing electric arc come together concurrently in the reactor. In one embodiment of the invention, the non-equilibrium plasma system comprises two eccentric cylindrical manifolds configured to form a single inlet manifold, wherein the two eccentric cylindrical manifolds comprise a first eccentric cylindrical manifold for gasifying agent input and a second eccentric cylindrical manifold for syngas input. The invention also comprises a method for refining syngas wherein the non-equilibrium plasma system of the present invention combines the syngas, the air and the plasma-producing electric arc in the same region, which will co-exist in the same location.

The present disclosure describes material surface treatment systems and methods that employ a byproduct treatment system to receive a byproduct generated by application of a plasma, the byproduct treatment system configured to degrade the byproduct and exhaust the degraded byproduct from the material surface treatment. The disclosed byproduct treatment system modifies the byproduct prior to evacuation from the material treatment system in order to reduce or eliminate byproduct contamination into the surrounding atmosphere.

A gas treating apparatus may include a reaction chamber configured to process a gas supplied from an outside by a plasma, the processed gas containing a nitrogen oxide, and a nitrogen oxide reduction apparatus connected to the reaction chamber. The nitrogen oxide reduction apparatus includes a cooling unit configured to cool the processed gas to a temperature lower than a nitrogen oxide generation temperature.