Process for sampling particulate matter passing from one treatme

Details Process for sampling particulate matter passing from one treatme Process for sampling particulate matter passing from one treatme

1985-12-11

1987-01-20

Chiesa, Richard L.

Measuring and testing

Sampler, sample handling, etc.

Withdrawing through conduit or receptacle wall

34 10, 208140, 422141, 502 45, G01N 102

Patent

active

046372660

ABSTRACT:
Process for sampling particulate matter in a downwardly movable bed thereof which is successively contacted by two different process gases, the second of which is moving upwardly, in such a manner that the particulate matter sampled will be fully representative of particles which have been fully contacted by the first process gas but which have not been contacted by the upwardly moving second process gas. The particulate matter is passed downwardly in the shape of an annular bed through a first annular treatment zone while the major portion of the first process gas is passed through the annular bed in a radially inward direction. The annular bed is then passed downwardly along with a small amount of the first process gas from the first treatment zone through an elongated transition zone and into the radially outermost upper portion of a generally cylindrical second treatment zone. A second process gas is then passed upwardly through the second treatment zone while being prevented from entering the transition zone. Sampling is done in the transition zone.

REFERENCES:
patent: 2440525 (1948-04-01), Roetheli
patent: 3652231 (1972-03-01), Greenwood et al.
patent: 3692496 (1972-09-01), Greenwood et al.
patent: 3706536 (1972-12-01), Greenwood et al.
patent: 3786682 (1974-01-01), Winter et al.
patent: 3838039 (1974-09-01), Vesely et al.
patent: 3882015 (1975-05-01), Carson
patent: 3907511 (1975-09-01), Forbes et al.
patent: 3973440 (1976-08-01), Vande Ven et al.
patent: 4167474 (1979-09-01), Sikonia

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