Pyrolysis and analysis system
Abstract
Abstract A METHOD AND APPARATUS FOR DIRECTLY SELECTIVELY ANALYZING ORGANIC CARBON OR OTHER PREDETERMINED COMPOUNDS IN A SAMPLE-CONTAINING FLUID SUCH AS WASTEWATER. THE ORGANIC CARBON IN THE WASTEWATER SAMPLE IS EITHER OXIDATELY PYROLYZED TO CARBON DIOXIDE OR REDUCTIVELY PYROLYZED TO METHANE, WHICH PRODUCTS ARE THEN ANALYZED. PRIOR TO PYROLYSIS, THE INORGANIC CARBONATE AND BICARBONATE SALTS PRESENT IN THE WATER ARE REMOVED BY ACIDIFICATION TO CARBONIC ACID AND VAPORIZATION OF THE CARBON DIOXIDE COMPONENT IN A VOLATILIZATION ZONE. THE VAPORS, INCLUDING CERTAIN VOLATILE ORGANIC CARBON COMPOUNDS, ARE DIRECTED IN A CARRIER GAS THROUGH A PACKED DETENTION COLUMN FOR SORPTION OF THE ORGANIC CARBON COMPOUNDS ON THE PACKING WHILE THE CARBON DIOXIDE IS VENTED. THEREAFTER THE CARRIER GAS FLOW IS REVERSED AND THE SORBED COMPOUNDS ARE DESORBED AND CONVEYED TO A PYROLYSIS ZONE WHEREIN THEY ARE PYROLYZED ALONG WITH THE UNVAPORIZED SAMPLE AND CONVERTED TO A GASEOUS PYROLYSIS PRODUCT WHICH IS QUANTITATIVELY ANALYZED. THE WASTEWATER MAY BE SUPPIED IN A BOAT TO THE VOLATILIZATION ZONE AND THE BOAT MOVED INTO THE PYROLYSIS ZONE DURING PYROLYSIS.
Inventors
- 👤 Yoshihiro Takahashi
- 👤 Robert T Moore
- 👤 Thomas M Stephens
Bibliographic Details
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