1
Fu Ming Lee, Kuang Yeu Wu, Lindsey Vuong, Fong Cheng Su, Tzong Bin Lin, Jyh Haur Hwang, Hung Chung Shen, Po Sung Cheng, Tai Ping Chang: Low-energy extractive distillation process for dehydration of aqueous ethanol. AMT International, CPC Corporation Taiwan, Cascio & Zervas, August 23, 2011: US08002953 (24 worldwide citation)

An energy-efficient extractive distillation process for producing anhydrous ethanol from aqueous/ethanol feeds containing any range of ethanol employs an extractive distillation column (EDC) that operates under no or greatly reduced liquid reflux conditions. The EDC can be incorporated into an integ ...


2
Kuang Wu, Fred Tahmassi, Adam T Lee: Method and apparatus for improving a fractionation process. AMT International, Baker Botts L, October 5, 2004: US06799752 (20 worldwide citation)

A method and apparatus for increasing fractionation capacity and efficiency within an existing distillation column having preexisting mass transfer surface structures with a multiplicity of openings for vapor-liquid contact is provided. Some embodiments of the present invention include microdisperse ...


3
Larry W Burton, Farzad G Tahmassi, Francis W Lemon: Exchange column, perforated tray assembly. AMT International, Spencer S Chen, Francis Lemon, September 18, 2007: US07270315 (18 worldwide citation)

In, for example, a gas-liquid, liquid/liquid exchange column, perforated tray assemblies are provided which have a plurality of adjacent tray sections with slots adjacent rounded leading edges of the sections, and catches extending along trailing edges which interlock in the slots of an adjacent sec ...


4
Larry W Burton, Fred G Tahmassi: Tray attachment apparatus. AMT International, Baker Botts L, July 23, 2002: US06422539 (18 worldwide citation)

An apparatus for connecting adjacent tray panel of a fractionation tray within a distillation column tower for the separation between a vapor and liquid is provided. A first interlocking panel has an alignment area with at least one alignment slot toward the center of the panel and at least one alig ...


5
Karl T Chuang, Guo Chang Pan: Fluids contacting, tray opening, fluid dispersing assembly. AMT International, Baker Botts L, November 14, 2000: US06145816 (16 worldwide citation)

A fluids contacting and dispersing apparatus for a fluids contacting column is provided including a perforated cover plate, a device for positioning the cover plate over a tray opening and securing it within the opening. Deflecting members span each perforation in the cover plate to prevent bleed fl ...


6
Kuang Yeu Wu, Tsung Min Chiu, Tzong Bin Lin, Hung Chung Shen, Yu Ming Wu, Tung Hsiung Kuo: Extractive distillation process for recovering aromatics from petroleum streams. AMT International, CPC Corporation, Spencer Chen, February 23, 2010: US07666299 (12 worldwide citation)

A process for recovering polar hydrocarbons from non-polar hydrocarbons, such as aromatics from non-aromatics, naphthenes from paraffins and isoparaffins, or olefins from paraffins and isoparaffins, in feed mixtures containing at least a measurable amount of heavier hydrocarbons. This improved extra ...


7
Guo Chang Pan, Karl T Chuang: Apparatus for tray valve attachment. AMT International, Baker Botts L, April 25, 2000: US06053485 (11 worldwide citation)

An apparatus and method for attaching a dispersion valve to a fractionation tray surface. The valve is inserted into a fractionation tray perforation. At least two legs extend downward from a cover plate with a larger area than the perforation. Each of the legs is positioned at or near the periphera ...


8
Adam T Lee, Kuang Yeu Wu, Larry W Burton, Francis W Lemon: Liquid/liquid exchange column. Amt International, Ridout & Maybee, July 7, 2009: US07556734 (11 worldwide citation)

The contact between, for example, ascending liquid droplets of lighter liquid, as the dispersed phase, and heavier liquid, as the continuous phase, flowing across perforated trays in a flooded liquid/liquid contacting column, is enhanced by providing upstanding baffles on lower trays, interspersed w ...


9
Wu Kuang Yeu, Chiu Tsung Min, Lin Tzong bin, Shen Hung Chung, Wu Yu Ming, Kuo Tung Hsiung: Extractive distillation process for recovering aromatics from petroleum streams. Amt International, Cpc Corporation Taiwan, Wu Kuang Yeu, Chiu Tsung Min, Lin Tzong bin, Shen Hung Chung, Wu Yu Ming, Kuo Tung Hsiung, CHEN Spencer S, February 19, 2009: WO/2009/023605 (11 worldwide citation)

The present invention relates to a process for recovering polar hydrocarbons from non-polar hydrocarbons, such as aromatics from non-aromatics, naphthenes from paraffins and isoparaffins, or olefins from paraffins and isoparaffins, in feed mixtures containing at least a measurable amount of heavier ...


10
Fu Ming Lee, Kuang Yeu Wu, Tsung Min Chiu, Zong Ying Chen, Jyh Haur Hwang, Tzong Bin Lin, Hung Chung Shen, Tung Hsiung Kuo, Yu Ming Wu: Energy efficient and throughput enhancing extractive process for aromatics recovery. CPC Corporation Taiwan, AMT International, Cascio & Zervas, February 1, 2011: US07879225 (9 worldwide citation)

An energy efficient, high throughput process for aromatics recovery can be readily implemented by revamping existing sulfolane solvent extraction facilities, or constructing new ones, so as to incorporate unique process operations involving liquid-liquid extraction and extractive distillation. Curre ...