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Bakelite Chemicals LLC

Harold R Cowles

Adam Krzysztof Sniady

Jim P Arduino

Lawrence P Otwell

Stephen Douglas Prout

Kim Kristine Tutin

Christopher M Cueman

William J Stanley

Lawrence Cioffi

Methods and systems for obtaining exhaust streams from wood drying processes and controlling emissions in exhaust streams from wood drying processes are provided. Methods and systems can include pre-treatment steps, such as removing particulate matter and/or heating a process exhaust stream from a wood dryer, in order to obtain an exhaust stream that is suitable for downstream recovery of terpenes from said exhaust stream. Exhaust streams can be contacted with a sorbent to remove volatile organic compounds, and other emissions, generating a purified air stream that is able to be released into the environment without further purification or oxidation.

Methods and systems for controlling emissions from wood drying processes

Methods and systems for recovering terpenes and controlling the composition of terpenes collected from wood drying processes are provided. In particular, a sorbent having adsorbed materials, including terpenes, from a wood drying process can be desorbed in a desorber, resulting in a gaseous stream containing terpenes, which can be condensed and collected from the gaseous stream. The conditions of desorption can be controlled to ensure a desirable amount of alpha-pinene and beta-pinene relative to other terpenes, such as dipentene and camphene, in the collected terpenes.

Methods and systems for recovering terpene compositions from wood drying exhaust

A method and apparatus for controlling the heating of adsorbent materials in a vessel including the utilization of electrodes in direct contact with the adsorbent material to induce a current in the material. The electrical contacts are spaced apart and receive a potential for inducing the electrical current; one of the electrodes is a different size to thereby induce a radial component in the electrical current to thus modify the current density flowing through the adsorbent material as the current traverses the distance between the electrodes. The resulting modified current density causes the temperature gradient across the transverse section of the vessel to decrease, thus rendering the temperature more uniform across the vessel.

Method and apparatus for controlled heating of adsorbent materials

A VOC removal or destruction system incorporates a regenerator/reactivator having a cylindrical ceramic tube for receiving contaminated adsorbent activated carbon. Electrodes are provided in the ceramic tube in contact with the activated carbon and a programmable logic controller is connected to control the voltage applied to the electrodes and the current flowing through the activated carbon within the tube. The temperature of the material in the tube is controlled by the programmable controller to maintain a temperature within one of two temperature ranges for regenerating the activated carbon and for reactivating the activated carbon. An inert gas is supplied through the tube in contact with the contaminated adsorbent material; the effluent gas including the stripped VOC's is supplied to an oxidizer for destruction. The oxidizer includes a stoichiometric burner providing combustion products for oxidizing the gaseous adsorbate and for providing carrier gas to the regenerator/reactivator.

VOC removal or destruction system

A new synthetic, pyrolized, spherical adsorbent, with a moving or fluidized bed VOC control/solvent recovery system, also described as a control/solvent recovery system.

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Scotia, NY, United States of America

Harold R Cowles