US4087208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for compressing mixed gas consisting of combustible gas and air
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1976-06-08
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Granted: 1978-05-02
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Expires: 1996-06-08
Abstract
Abstract A novel method for compressing mixed gas consisting of combustible gas and air without risk of explosion of the mixed gas is described herein. In the novel method, the mixed gas is compressed under coexistence of non-combustible liquid such as water. In one preferred embodiment, a water-sealed compressor as represented by a Nash pump is used for compressing the mixed gas, and water contained in the compressed mixed gas is separated and fed back to the water-sealed compressor to assure existence of sealing water in the compressor.
Inventors
- 👤 Kazumi Uda
- 👤 Motohiko Tamura
- 👤 Ichiro Nishiura
- 👤 Hiroshi Fujiike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:39
CPC Classifications
F; F04; F04C; F04C28/00; F04C28/28; F04C19/00; F04C19/001; F04C23/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
49 words
A method for compressing mixed gas consisting of combustible gas and air, comprising: injecting water into said mixed gas, introducing said mixture of mixed gas and water into a water-sealed compressor, injecting water into said water-sealed compressor, and compressing said mixed gas/water mixture, whereby risk of explosion is reduced.
Claim 2
Independent Claim
49 words
A method for compressing mixed gas consisting of combustible gas and air, comprising: injecting water into said mixed gas, introducing said mixture of mixed gas and water into a water-sealed compressor, injecting water into said water-sealed compressor, and compressing said mixed gas/water mixture, whereby risk of explosion is reduced.
Claim 3
Dependent Claim
26 words
A method according to claim 1, in which said water contained in the compressed mixed gas is separated, cooled and fed back to the compressing stage.
Claim 4
Dependent Claim
57 words
A method of compressing a mixed gas consisting of combustible gas and air, comprising: compressing said mixed gas with a water-sealed compressor according to the method of claim 1 to form a mixture of compressed mixed gas and water, separating said mixture of compressed mixed gas and water, and recycling said separated water to said water-sealed compressor.
Claim 5
Dependent Claim
11 words
A method according to claim 3, including cooling said recycled water.
Claim 6
Dependent Claim
17 words
A method according to claim 3 including collecting said separated water in a tank prior to recycling.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |