Measuring and testing – Sampler – sample handling – etc. – Withdrawing through conduit or receptacle wall
Patent
1989-06-14
1990-09-25
Noland, Tom
Measuring and testing
Sampler, sample handling, etc.
Withdrawing through conduit or receptacle wall
7386383, 7386443, G01N 108, G01N 114
Patent
active
049585274
ABSTRACT:
A valve assembly for on-line removal of representative granular material such as catalyst samples from a process vessel such as a reactor including a plunger type valve having an extension tube of catalyst-compatible material attached to the sampling end of the valve through which sample can be extracted from a predetermined location in the catalyst bed via a flexible auger, or sucked by vacuum into a collection pot, under an inert atmosphere; and the sampling process using the valve assembly. The valve assembly and process allows sampling without contaminating or modifying the oxidation state of the sample or damaging the catalyst, reduces reactor downtime, and allows repeated sampling without the problem of leakage.
REFERENCES:
patent: 3561274 (1971-02-01), Haunschild
patent: 3786682 (1974-01-01), Winter et al.
patent: 3804365 (1974-04-01), Fetterolf et al.
patent: 3847023 (1974-11-01), Mallander et al.
patent: 4454943 (1984-06-01), Moller
patent: 4483206 (1984-11-01), Thompson
patent: 4594903 (1986-06-01), Johnson
patent: 4594904 (1986-06-01), Richter
patent: 4854189 (1989-08-01), Mauleon et al.
"Strahman Sampling Valve", 2 page brochure.
Noland Tom
The Dow Chemical Company
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