An inline bitumen froth steam heater system is comprised of steam injection and static mixing devices. The steam heater system heats and de-aerates an input bitumen froth without creating downstream processing problems with the bitumen froth such as emulsification or live steam entrainment. The inli
An inline bitumen froth steam heater system is comprised of steam injection and static mixing devices. The steam heater system heats and de-aerates an input bitumen froth without creating downstream processing problems with the bitumen froth such as emulsification or live steam entrainment. The inline bitumen froth steam heater is a multistage unit that injects and thoroughly mixes the steam with bitumen resulting in an output bitumen material having a homogenous temperature of about 190° F. The heating system conditions a superheated steam supply to obtain saturated steam at about 300° F. The saturated steam is contacted with a bitumen froth flow and mixed in a static mixer stage. The static mixers provide a surface area and rotating action that allows the injected steam to condense and transfer its heat to the bitumen froth. The mixing action and the increase in temperature of the bitumen froth results in reduction in bitumen viscosity and also allows the release of entrapped air from the bitumen froth.
대표청구항▼
We claim: 1. Apparatus for heating a bitumen froth by steam, the apparatus comprising: an injector body comprising a bitumen froth inlet for receiving the bitumen froth, a steam inlet for receiving the steam, and an injector outlet; and a static mixer body having first and second spaced ends and fo
We claim: 1. Apparatus for heating a bitumen froth by steam, the apparatus comprising: an injector body comprising a bitumen froth inlet for receiving the bitumen froth, a steam inlet for receiving the steam, and an injector outlet; and a static mixer body having first and second spaced ends and forming an enclosed passageway extending between the first and second ends, wherein the first end is in communication with the injector outlet, the static mixer body supporting a plurality of baffles disposed within the enclosed passageway to effect a mixing action of the bitumen froth and the steam flowing through the enclosed passageway thereof to form a heated feed; wherein the steam inlet is disposed to inject the steam into the injector body towards the enclosed passageway in a direction generally parallel to the a longitudinal axis of the enclosed passageway; and wherein the apparatus is operably configured to: (a) force the bitumen froth and the steam through the injector outlet into the enclosed passageway, (b) force the bitumen froth and the steam through the enclosed passageway from the first end to the second end so as to cause the steam to contact the bitumen froth so as to form the heated feed, and (c) force all of the heated feed to exit through the second end of the static mixer body, including when the enclosed passageway is disposed parallel or about parallel to the horizontal axis. 2. The apparatus of claim 1 wherein the baffles are disposed within the static mixer body to impart a lateral, radial, tangential or circumferential directional component to the bitumen froth and the steam, the directional component changing repeatedly along a length of the enclosed passageway. 3. The apparatus of claim 1 further comprising a steam flow control valve to control a rate of supplying the steam to the steam inlet from a steam source. 4. The apparatus of claim 3 further comprising a first temperature transmitter disposed to measure a temperature of the heated feed exiting the enclosed passageway of the static mixer, wherein steam flow control valve is responsive to the measured temperature of the heated feed. 5. The apparatus of claim 1 further comprising a steam flow pressure control valve to control a pressure of the steam supplied to the steam inlet from a steam source. 6. The apparatus of claim 5 further comprising a pressure transmitter disposed to measure the pressure of the steam supplied from the steam flow pressure control valve, wherein the steam flow pressure control valve is operative to maintain the steam supplied to the steam inlet at a predetermined pressure in response to the measured pressure of the steam supplied from the steam flow pressure control valve. 7. The apparatus of claim 1 further comprising: a condensate source and a steam source; a condensate mixer operably configured to mix a condensate from the condensate source with the steam from the steam source for modulating a temperature of the steam supplied to the steam inlet; and a condensate flow control valve to control a supply of the condensate to the condensate mixer. 8. The apparatus of claim 7 further comprising a second temperature transmitter disposed to measure the temperature of the steam supplied to the steam inlet and relay a representation of the measured temperature of the steam to the condensate flow control valve, wherein the condensate flow control valve is operative to control the supply of the condensate to the steam supplied to the steam inlet. 9. The apparatus of claim 1 wherein the steam supplied to the steam inlet comprises saturated steam. 10. The apparatus of claim 9 wherein the steam supplied to the steam inlet has a temperature of about 300° F. and a pressure of about 90 psi. 11. The apparatus of claim 9 wherein the heated feed has a substantially uniform temperature. 12. The apparatus of claim 11 wherein the substantially uniform temperature is about 190° F. 13. Apparatus for heating a bitumen froth by steam, the apparatus comprising: an injector body comprising walls defining a chamber of the injector body, a first injector inlet for introducing the bitumen froth having a bitumen froth flow into the chamber, a second injector inlet for introducing the steam having a steam flow into the chamber, and an injector outlet, wherein the second injector inlet is configured for introducing steam; and a static mixer body comprising: a mixer inlet and a mixer outlet, the static mixer body forming an enclosed passageway extending between the mixer inlet and the mixer outlet, the mixer inlet being in fluid communication with the injector outlet for receiving the bitumen froth and the steam; and mixing means for mixing the bitumen froth and the steam flowing through the enclosed passageway of the static mixer body to form a heated feed; wherein the injector body and the static mixer body are operably configured to: (a) force the bitumen froth and the steam through the enclosed passageway from the mixer inlet to the mixer outlet so as to cause the steam to contact the bitumen froth and form the heated feed, and (b) force all of the heated feed to exit through the mixer outlet, including when the enclosed passageway is disposed parallel or about parallel to the horizontal axis. 14. The apparatus of claim 13 wherein the mixing means impart a lateral, radial, tangential or circumferential directional component to the bitumen froth and the steam, the directional component changing repeatedly along a length of the enclosed passageway. 15. The apparatus of claim 13 wherein the mixing means comprises a plurality of static mixer barriers forming partial walls disposed within the enclosed passageway. 16. The apparatus of claim 15 wherein the steam injected by the second injector inlet has a temperature of about 300° F. to about 500° F. and a pressure of about 90 to 150 psi. 17. The apparatus of claim 15 wherein the heated feed produced by the static mixer body has a temperature of about 190° F. 18. The apparatus of claim 13 further comprising a steam flow control valve to control a rate of the steam flow into the chamber and a first temperature transmitter disposed to measure a temperature of the heated feed exiting the static mixer body, wherein the injector body, the static mixer body, the steam flow control valve and the first temperature transmitter form a first closed loop control system, the steam flow control valve being responsive to the measured temperature of the heated feed by the first temperature transmitter. 19. The apparatus of claim 18 further comprising a steam flow pressure control valve to control a pressure of the steam flow into the chamber and a pressure transmitter disposed to measure the pressure of the steam flow from the pressure control valve, wherein the injector body, the static mixer body, the steam flow control valve, the temperature transmitter, the steam flow pressure control valve and the pressure transmitter form a second closed loop control system, the steam flow pressure control valve being responsive to the measured pressure. 20. The apparatus of claim 19 further comprising a condensate flow control valve to control the supply of a condensate to the steam for modulating the temperature of the steam for injecting by the second injector inlet and a second temperature transmitter disposed to measure the temperature of the steam supplied to the second injector inlet, wherein the injector body, the static mixer body, the steam flow control valve, the first temperature transmitter, the steam flow pressure control valve, the pressure transmitter, the condensate flow control valve, and the second temperature transmitter form a third closed loop control system, the condensate flow control valve being responsive to the temperature of the steam measured by the second temperature transmitter. 21. The apparatus of claim 13 wherein the mixing means comprises a baffle disposed across the enclosed passageway. 22. The apparatus of claim 13 wherein the steam supplied to the second injector inlet comprises saturated steam.
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