Siemens Energy, Inc.

Lummus Technology Inc.

Nexen Energy Ulc

Bryan J Kumfer

Chad L Felch

Matthew R Patterson

Timothy J Schleusner

Richard Kelso Kerr

Bruce L Brandenburg

Richard W Lehmann

Matthew Patterson

Simon Larson

Michael Howdeshell

Philip A Burclaff

Eric A Lorge

Eric Martin

Stuart J Munson

Curtis D Cooley

Mark Allen Clark

Todd Wingers

Duane R Smith

Robert J Wenta

Clayton Maugans

Andrea J Larson

Mark Clark

Kurt M Knuth

Thomas E Schulz

Dominic Bush

Bruce Brandenburg

Philip Rettger

There are disclosed processes and systems wet air oxidation systems and processes which provide for the combined treatment of a spent caustic with a spent material (e.g., spent carbon, spent biological material, or combinations thereof) to produce a regenerated spent material stream.

Wet air oxidation of a spent material with spent caustic addition

There are provided systems () and processes for the selective removal of cyanide from a wastewater stream () comprising cyanide and an amount of organic compounds therein.

Catalytic oxidation system and process for selective cyanide removal

There are provided systems and processes that provide a robust α-alumina supported catalyst for the wet air oxidation or hydrolysis treatment of wastewaters having a pH of 9 or greater.

Catalyst treatment to improve corrosion resistance

There are provided systems and processes which enable the efficient biological treatment of high salt concentration fluid streams, e.g., spent caustics, to reduce COD concentrations in the fluid streams.

Systems and processes for treatment of high total dissolved solids wastewater

There are disclosed systems and processes that substantially prevent scaling in the treatment of a spent carbon material in a wet air oxidation (WAO) system.

Low temperature wet air oxidation

There are provided electrooxidation systems and processes which provide an elevated pressure at which components are oxidized in an electrooxidation cell. The elevated pressure reduces power consumption for the cell at least in part by reducing the formation of gas bubbles, which typically leads to increased resistance and an increased power output.

Electrooxidation at elevated pressures

Catalytic systems and methods for treating process streams are disclosed. Catalytic wet oxidation and hydrolysis techniques may be used to treat one or more undesirable constituents. Methane may be produced in connection with at least some embodiments.

Catalytic systems and methods for process stream treatment

Catalytic systems and methods for treating process streams are disclosed. Catalytic wet oxidation and hydrolysis techniques may be used to treat one or more undesirable constituents such as HPAM and KHI. Methane may be produced in connection with at least some embodiments.

Methods and systems for applying separation processes to a spent caustic stream are disclosed. Methods and systems for regenerating media utilized in spent caustic separation processes are disclosed.

Methods and systems for treating spent caustic and regenerating media

Systems and methods are provided for the treatment of caustic wastewater. Specifically, systems and methods are provided for combining refinery spent caustic and ethylene spent caustic solutions and treating the combined spent caustic mixture using a wet air oxidation process.

Treatment of spent caustic waste

The present invention relates generally to a system and method for treating wastewater in a filter media apparatus having a draft tube system. The filter media may be walnut shell media.

Water treatment apparatus incorporating walnut shell filter media and a draft tube system

A system and method for the treatment of process streams is provided. A catalyst mediates a wet oxidation process at elevated temperatures and pressures for treating at least one undesirable constituent in an aqueous mixture. A catalyst may be selected for its solubility at a detected pH level of the aqueous mixture. Alternatively, a pH level of the aqueous mixture may be adjusted to solubilize a selected catalyst and/or maintain the selected catalyst in a soluble form. A controller in communication with a pH sensor may be configured to generate a control signal to adjust the pH level of the aqueous mixture in response to the pH sensor registering a pH level outside a predetermined pH solubility range for a selected catalyst.

pH control to enable homogeneous catalytic wet air oxidation

A water treatment system () utilizing granular activated carbon (GAC) for the removal of organic contaminants in a process water circuit (), and including a carbon regeneration circuit () in fluid communication with the process water circuit. The carbon regeneration circuit may include a dedicated regeneration vessel (), or the regeneration process may proceed within a GAC/water contactor () of the process water circuit. A process is described wherein spent GAC from the water treatment system is regenerated within the system with an oxidation process that minimizes damage to the carbon granules.

Water treatment system with carbon regeneration circuit

Systems and methods of removing sulfur from a gas stream comprising hydrogen sulfide (HS) is provided. The systems and methods may utilize iodine to remove sulfur from the gas stream. In certain systems and methods, the iodine may be regenerated. In particular, the present systems and methods may be capable of reducing sulfur content in a gas stream comprising hydrogen sulfide HS gas to levels that are undetectable.

Growing community of inventors

Ringle, WI, United States of America

Bryan J Kumfer