Seh America, Inc.

Andrew J Bomber

Allen R Boyce

Michael A Hamilton

Debasish Mukhopadhyay

Carla E Yetter

Mitchell L Gee

Ellen Park

William E Osborne

Bill C Pesklak

Frank A Dick

A chemical sampling sink and method. The chemical sampling sink typically includes an enclosure configured to contain a receptacle, and a chemical supply line extending into the enclosure, the chemical supply line including a dispenser configured to deliver a liquid chemical to the receptacle. The chemical sampling sink also includes an exhaust line attached to the enclosure, the exhaust line being configured to suction gases from the enclosure, and a filter positioned on the enclosure, the filter being configured to remove contaminants from air drawn into the enclosure as gases are suctioned from the enclosure out the exhaust line.

Chemical sampling sink

A treatment system for process exhaust streams containing NOx. The system includes a plurality of sequential scrubbing assemblies that collectively receive and contact a process exhaust stream containing NOx and a water stream to produce a product exhaust stream with a concentration of NOx that is below a determined threshold value. The removed NOx forms a portion of a system waste liquid stream that includes a majority of the NOx removed from the process exhaust stream.

Nox scrubbing system and method

A system for regulating pressure in a sealed chemical storage tank. The system includes a vent passage connected to the tank, through which gas may pass into and out of the tank. The vent passage includes a first enclosed region having a first volume and a second enclosed region having a second volume. A volume of liquid, which is less than each of the first and second volumes, is associated with the vent passage to selectively constrain the passage of gas through the vent passage. Increased pressure in the tank moves the liquid into the second enclosed region. The second enclosed region is constructed to accommodate the volume of liquid to allow gas to pass. Vacuum in the tank moves the liquid into the first enclosed region. The first enclosed region is constructed to accommodate the volume of liquid to allow gas to pass.

Pressure relief system for chemical storage tanks

A nitrogen oxide scrubbing process comprises the step of contacting effluent containing nitrogen oxide with an aqueous alkaline peroxide solution. The process may take place in scrubbing towers where the aqueous solution flows countercurrent to the effluent.

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Vancouver, WA, United States of America

Andrew J Bomber