On-demand Environmental Systems, Inc.

Hoechst Celanese Corporation

Raytheon Company

American Hoechst Corporation

Techarmonic, Inc.

Earl C Vickery

James C Schmoock

Clyde M Brown, Jr

Mark Yates

An apparatus and method for removing volatile organic compounds (VOCs) from a stream of contaminated air using an adsorbent material. The stream of contaminated air is introduced into an end of a first hollow member which contains the adsorbent material. A perforated member disposed within the hollow member is configured to increase the air stream velocity such that dispersed particles of the adsorbent material are entrained in the air stream. Entrainment of the adsorbent in the contaminated air stream facilitates efficient removal of the VOCs. The cleaned air stream exits from a second end of the first hollow member, and the adsorbent material, having a quantity of VOCs adsorbed thereon, is directed to a reconditioning apparatus wherein the VOCs are thermally desorbed. The reconditioned adsorbent material is then returned to the first hollow member.

Apparatus and method for removing volatile organic compounds from a

An apparatus and method for removing volatile organic compounds from an air stream wherein airborne adsorbent material is mixed with contaminated exhaust air in a vertical main column. Volatile Organic Compounds (VOCs) within the exhaust air adhere to the adsorbent material and are thus removed from the air. The clean air exits the system and the saturated adsorbent material falls through the bottom of the main column and into a lower reservoir. The saturated adsorbent material is desorbed and recycled through the adsorber apparatus by being drawn up from the lower reservoir through a secondary column and deposited at the inlet to the main column. At the top end of the main column, the adsorbent material is once again dropped into the contaminated exhaust air flowing through the main column. This process is constant and adsorbent material is continuously being recycled through the system.

Apparatus and method for removing volatile organic compounds from an air

A volatile organic compound (VOC) incinerator that is designed for installation in the exhaust airstream of VOC generating equipment. The incinerator includes an intake end, combustion chamber and an exhaust end. A flame baffle is disposed within the combustion zone to cause mixing of the VOC plus hot air mixture to increase efficiency and reduce fuel requirements. A temperature sensor is disposed within the combustion zone of the combustion chamber of the incinerator to monitor the combustion temperature to provide temperature signals to a controller. An air flow rate sensor is engaged in the intake end of the incinerator to provide air flow rate signals to the controller. The controller regulates the quantity of fuel injected into the VOC plus air mixture based upon the air flow rate signals and the temperature signals. A VOC detector is disposed in the intake end of the incinerator to provide a signal that turns the unit on or off depending upon the presence or absence of VOC's in the airstream.

Organic compound incinerator

A method and apparatus for the more complete incineration of dangerous waste gases to produce by-products which are safer for eventual release into the atmosphere. The invention involves mixing the waste gases with a flammable co-incineration fuel at an upstream location which is devoid of a combustion-supporting atmosphere, moving the mixture downstream to an ignitor fuel flame, and introducing a source of oxygen immediately downstream of the flame to support the combustion of the flame. The flame ignites the co-incineration fuel which, together with the flame, co-incinerates the waste gases in an area between the upstream area at which the waste and fuel gases are mixed and the downstream area at which the source of oxygen is admitted. The invention also preferably includes centering the co-incineration reaction for 'cold wall' operation, mixing the by-products with air for cooling purposes.

Coincinerator apparatus and method for processing waste gases

A flame arresting method, conduit section and apparatus for the safe disposal of combustible waste gases from a source such as a reactor. The invention involves providing a waste gas conduit section with a flame-detecting chamber and one or more upstream snuffing chambers divided by flame arresting grid members, and automatically introducing snuffing gases to the snuffing chamber(s) whenever a flame is detected in the flame-detecting chamber. The outlet from the waste gas conduit section opens to a combustion chamber, for incineration purposes, or to a scrubber.

Flame arresting conduit section, combustor and method

An apparatus and method for incinerating combustible gases. The apparatus has first and second perpendicularly joined pipes and an igniter in the second pipe. Combustible gases laminarly flow into the second pipe and oxygen turbulently flows into the first. The gases turbulently mix, ignite and centrifugally swirl from the first pipe to the second pipe and then out the first pipe again. Fuel flow is regulated by flame, temperature and seismic detectors.

Turbulent incineration of combustible materials supplied in low pressure

A semiconductor voltage reference device formed by ion implanting particles into a semiconductor body having first and second doped regions of opposite type conductivity formed therein. Such particles are implanted with a peak concentration at a predetermined depth from a surface of the body, providing a third region of conductivity type opposite that of the first region and having a doping concentration greater than that of the second region. The particles extend beneath the surface of the body into the first and second regions, a junction being formed between the first and third regions beneath the surface of the body. Electrodes are provided in ohmic contact with the first and second doped regions. When the junction is reverse biased by applying a proper voltage across the electrodes the junction breaks down beneath the surface of the body establishing a fixed or reference voltage between the electrodes.

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San Jose, CA, United States of America

Earl C Vickery