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JET PUMP TECHNOLOGY FOR EVACUATION OF GAS FROM GAS PHASE REACTOR RESIN TRANSFER AND PRODUCT DISCHARGE SYSTEMS

IP.com Disclosure Number: IPCOM000175843D
Publication Date: 2008-Oct-27
Document File: 1 page(s) / 23K

Publishing Venue

The IP.com Prior Art Database

Abstract

The problem with resin transfer or discharge systems is that reactor gas leaves with the resin. The desire of these systems is to minimize the amount of gas transferred from the reactor. The current systems use a number of tanks to incrementally drop the pressure in the final transfer/discharge tank. A method for decreasing the amount of gas in a gas phase reactor Resin Transfer System (RTS or IRTS) and Product Discharge System (PDS) is proposed.

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JET PUMP TECHNOLOGY FOR EVACUATION OF GAS FROM GAS PHASE REACTOR RESIN TRANSFER AND PRODUCT DISCHARGE SYSTEMS

The problem with resin transfer or discharge systems is that reactor gas leaves with the resin. The desire of these systems is to minimize the amount of gas transferred from the reactor. The current systems use a number of tanks to incrementally drop the pressure in the final transfer/discharge tank.

A method for decreasing the amount of gas in a gas phase reactor Resin Transfer System (RTS or IRTS) and Product Discharge System (PDS) is proposed. Gas left in these systems during resin transfers and discharges contribute to lower monomer usage or require the need of a vent recovery system, typically a compressor. Past designs use a number of vessels to lower pressure in the final transfer by increasing the total volume for gas expansion. This design uses an evacuation technique that draws gas from the tank without mechanical equipment (compressors). Gas is diverted from the cycle gas compressor discharge through an eductor system tied to the tanks. The closed tanks will be drawn down in pressure by the action of flowing gas through the eductor. The flowing gas and recovered gas are sent back to the cycle gas loop. The technology can be used to reduce the number of tanks (thereby reducing initial capital expenditure) and/or decrease the time required for current systems. The eductor technology in conjunction with cycle gas can be used for any vacuum required for operation where the vacuumed gas is compatible with reactor gas.

The technology can b...