1
Stephen M Harper, Roger L Helms: Method and apparatus for liquid feed to liqiud distributors in fluid-liquid contacting towers. The Dow Chemical Company, October 11, 1988: US04776989 (20 worldwide citation)

Disclosed is a method and apparatus for alternatively feeding liquid to be distributed in a chemical process tower through a plurality of liquid distributors positioned at the same level within the tower. Very low flowrates with very uniform liquid distribution is achieved with this invention.


2
Stephen M Harper, Jeffrey H Stultz: Liquid distributing apparatus for a liquid-vapor contact column. The Dow Chemical Company, M W Barrow, October 9, 1984: US04476069 (19 worldwide citation)

Improved trough-type liquid distributors and redistributors for use in vapor-liquid contact columns wherein uniform distribution of downflowing liquid is achieved by employing orifices in the sides of troughs, said orifices being sized such that they stay submerged. Better distribution is obtained w ...


3
Stephen M Harper, Jeffrey H Stultz: Liquid distributing apparatus and method for a liquid-vapor contact column. The Dow Chemical Company, M W Barrow, February 21, 1984: US04432913 (17 worldwide citation)

Improved trough-type and plate-type liquid distributors and redistributors for use in vapor-liquid contact columns wherein uniform distribution of downflowing liquid is achieved by employing round orifices in the sides of vapor ducts and troughs, said orifices being sized such that they stay submerg ...


4
Roger L Helms, Stephen M Harper: Ultra low flow rate liquid redistributor assembly for use in a liquid-vapor contact tower. The Dow Chemical Company, August 25, 1987: US04689183 (17 worldwide citation)

A redistributor assembly for a liquid-vapor contact tower including a liquid collecting apparatus, a ladder-type liquid redistributor disposed beneath the collecting apparatus, and at least one conduit in fluid communication connecting the collecting apparatus and the ladder-type redistributor. The ...


5
Stephen M Harper, Bobby G Hawkins: Ultra-low-flowrate liquid distributor system. The Dow Chemical Company, M W Barrow, April 24, 1984: US04444696 (10 worldwide citation)

Liquid distributor in packed column wherein close, long-term uniform liquid distribution pattern is desired, particularly at ultra-slow distributing flow-rates. Distributor comprised of: (1) array of spaced, enclosed, horizontal distributor tubes capable of maintaining liquid to be distributed under ...


6
Stephen M Harper: Liquid wall flow collector for chemical process tower. January 18, 1983: US04369150 (3 worldwide citation)

In a cylindrical shaped chemical process tower wherein it is desired to collect and/or redirect the flow of liquid flowing down the tower's internal wall surface, a wall wiper which requires no bolting or welding to the tower and which affords a liquid seal with the tower wall, said wall wiper compr ...