Drying and gas or vapor contact with solids – Apparatus – For diverse operations on treated material
Patent
1996-02-21
1997-09-23
Sollecito, John M.
Drying and gas or vapor contact with solids
Apparatus
For diverse operations on treated material
34 80, 96134, F26B 1900
Patent
active
056691548
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an air drying and purification system for compressed air and to a compressor incorporating the air drying and purification system.
According to the present invention there is provided an air drying and purification system for compressed air from a compressor, comprising: purifying cooled compressed air from the compressor by separating moisture and entrained particulate material and other contaminants from the compressed air, the separator chamber having an inlet for compressed air and an outlet for discharging at least partially dried and purified compressed air; chamber containing an absorbent material for absorbing moisture from the compressed air, the drying chamber having an inlet for introducing compressed air from the separator chamber and an outlet for discharging dried and purified compressed air; and material in the drying chamber and to remove contaminants from the separator chamber, the assembly comprising vent outlets in the separator chamber and the drying chamber and a valve assembly for opening and closing the vent outlets.
It is noted that the term "contaminants" may include oil vapour.
It is preferred that the air drying and purification system further comprises a heat exchanger for cooling compressed air at elevated temperatures from the compressor to condense moisture from the compressed air.
It is preferred that the heat exchanger comprise a heat exchanger coil having an inlet end for introducing compressed air at elevated temperatures from the compressor and an outlet end for discharging cooled compressed air into the separator chamber.
It is preferred that the air drying and purification system further comprises a means to direct compressed air vented from the drying chamber in heat exchange relationship with the coil.
It is preferred that the air drying and purification system further comprises a filter between the separator and drying chambers for further drying and purifying the compressed air from the separator chamber.
It is preferred that the filter be particularly adapted to remove oil vapour from the compressed air.
It is preferred that the filter be in the compressed air outlet of the separator chamber.
It is preferred that the absorbent material in the drying chamber comprises a granular molecular sieve material.
It is preferred that the air drying and purification system further comprises a filter in the compressed air inlet of the drying chamber.
It is preferred that the air drying and purification system further comprises a filter in the compressed air outlet of the drying chamber.
It is preferred that the air drying and purification system further comprises a one-way valve between the separator chamber and the drying chamber for preventing flow of compressed air from the drying chamber to the separator chamber.
It is preferred that the air drying and purification system further comprises a humidity indicator downstream of the compressed air outlet of the drying chamber.
It is preferred that the separator chamber comprises a vertically disposed cylindrical side wall and upper and lower end walls and that the inlet be in the cylindrical side wall.
With such an arrangement it is preferred that the inlet be positioned so that in use compressed air enters the separator chamber in a direction which promotes circulation of compressed air about a longitudinal axis of the separator chamber.
It is also preferred that the compressed air outlet of the separator chamber be in the upper end wall and that the vent outlet of the separator chamber be in the lower end wall.
It is also preferred particularly that the separator chamber comprises a cylindrical partition which divides the separator chamber into an outer annular section and a central cylindrical section, with the partition extending downwardly into the separator chamber from the upper end wall and terminating short of the lower end wall and being arranged so that compressed air circulates through the annular section and into the central section and therethrough to the compressed air outlet.
It
REFERENCES:
patent: 3572008 (1971-03-01), Hankison et al.
patent: 3855719 (1974-12-01), Jonsson
patent: 4018579 (1977-04-01), Hofmann
patent: 4060913 (1977-12-01), Yoshida
patent: 4601114 (1986-07-01), Noguchi
patent: 4755103 (1988-07-01), Streifinger
patent: 5190569 (1993-03-01), McGrath
patent: 5242473 (1993-09-01), Ogasahara
International Search Report; PCT/AU94/00283; 13 Jul. 1994; B. Bourke.
A P Systems (Australia) Pty., Ltd.
Gravini Steve
Sollecito John M.
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