Multi-compartment reactor and method for controlling retention time in a multi-compartment reactor
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United States of America Patent
Stats
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Nov 28, 2017
Grant Date -
Feb 19, 2015
app pub date -
Aug 21, 2013
filing date -
Aug 15, 2013
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Abstract
A method is disclosed for controlling retention time in a reactor, such as an autoclave, having a plurality of compartments separated by dividers with underflow openings. A retention time of the reaction mixture is calculated and compared with an optimal retention time, and the volumes of the reaction mixture in the compartments are adjusted while maintaining the flow rate of the reaction mixture, so as to change the retention time to a value which is closer to the optimal retention time. The reactor may include a level sensor in the last compartment for generating volume data; a control valve for controlling the liquid level in the last compartment; and a controller which receives volume data from the level sensor and controls operation of the control valve.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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HATCH LTD | MISSISSAUGA ONTARIO L5K 2R7 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Fraser, Kevin S | Mississauga, CA | 7 | 69 |
# of filed Patents : 7 Total Citations : 69 | |||
McCombe, William E | Georgetown, CA | 3 | 3 |
# of filed Patents : 3 Total Citations : 3 | |||
Pearson, Murray S | Oakville, CA | 4 | 7 |
# of filed Patents : 4 Total Citations : 7 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 28, 2025 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 28, 2029 |
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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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Dec 24, 2015 | FPAY | FEE PAYMENT | year of fee payment: 4 |
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Jul 03, 2012 | I | Issuance | |
Jun 13, 2012 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Nov 10, 2011 | P | Published | |
Jul 07, 2011 | F | Filing | |
Dec 20, 2007 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LAWHITE, NIELS;MANFREDI, LOUIS;SASS, WALTER L.;REEL/FRAME:026555/0875 Owner name: SECOND WIND SYSTEMS, INC., MASSACHUSETTS Effective Date: Dec 20, 2007 |
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