Multi-stage loop reactor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Aug 7, 2003
app pub date -
Dec 18, 2002
filing date -
Feb 1, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A multi-stage loop reactor, employed in various gas-liquid or gas-liquid-solid chemical reaction systems, which comprises a reactor body, draft tube(s) inside the reactor body, and a gas distributor at the bottom of draft tube. The draft tube can include one or more sections. The multi-stage loop reactor of the present invention has a higher mass transfer rate because the different phases are well mixed throughout the reactor, and the gas bubbles are distributed evenly everywhere. The reactor of this invention can be extensively applied in various gas-liquid or gas-liquid-solid reaction processes including the oxidization process, hydrogenation process, hydrocracking process, coal liquification process, fermentation process, hydrocarbon processing process, and biological treatment of waste water, etc.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
PETROCHINA COMPANY LTD | 16 ANDE ROAD DONGCHENG DISTRICT BEIJING 100011 |
International Classification(s)

- 2002 Application Filing Year
- B01F Class
- 500 Applications Filed
- 205 Patents Issued To-Date
- 41 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Ding, Fuxin | Haidian Distract, CN | 2 | 55 |
# of filed Patents : 2 Total Citations : 55 | |||
Liu, Zheng | Haidian Distract, CN | 491 | 1992 |
# of filed Patents : 491 Total Citations : 1992 | |||
Ma, An | Xicheng District, CN | 9 | 196 |
# of filed Patents : 9 Total Citations : 196 | |||
Qiao, Yong | Xicheng District, CN | 225 | 1651 |
# of filed Patents : 225 Total Citations : 1651 | |||
Yuan, Naiju | Haidian Distract, CN | 1 | 44 |
# of filed Patents : 1 Total Citations : 44 |
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Patent Citation Ranking
- 44 Citation Count
- B01F Class
- 96.21 % this patent is cited more than
- 22 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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