1. A CO2 recovery unit, which includes a CO2 absorber that brings flue gas containing CO2 into contact with a CO2 absorbent to reduce the CO2 contained in the flue gas, and a regenerator that reduces CO2 contained in rich solvent absorbing CO2 in the CO2 absorber to regenerate the rich solvent, so that lean solvent from which the CO2 is reduced in the regenerator is reused in the CO2 absorber, comprising:
a heat exchanger that allows the rich solvent to exchange heat with the lean solvent; and
a controller that controls to extract part of the rich solvent to allow the part to bypass the heat exchanger, and to be supplied into a top of the regenerator without exchanging heat so as to minimize a sum of an enthalpy that is taken out of the regenerator as CO2 gas accompanying steam and an enthalpy that is a result of subtracting an enthalpy of the rich solvent before heat exchange in the heat exchanger from an enthalpy of the lean solvent after the heat exchange.
2. The CO2 recovery unit according to claim 1, wherein control is performed to approximate a temperature difference between the rich solvent and the lean solvent at an entering side of the heat exchanger and a temperature difference between the rich solvent and the lean solvent at an exiting side of the heat exchanger.
3. The CO2 recovery unit according to claim 1, wherein the part of the rich solvent that has bypassed the heat exchanger accounts for 3 to 15 percent by weight of the rich solvent.
4. The CO2 recovery unit according to claim 1 further comprising a first heat exchanging unit that allows the part of the rich solvent that has bypassed the heat exchanger and been guided into the top of the regenerator to exchange heat in an upper section of the regenerator.
5. The CO2 recovery unit according to claim 1 further comprising a second heat exchanging unit that allows the part of the rich solvent that has bypassed the heat exchanger to exchange heat with the CO2 gas accompanying steam extracted from the regenerator.
6. A CO2 recovery method, for a CO2 absorber that brings flue gas containing CO2 into contact with a CO2 absorbent to reduce the CO2 contained in the flue gas, and a regenerator that reduces CO2 contained in rich solvent absorbing CO2 in the CO2 absorber to regenerate the rich solvent, so that lean solvent from which the CO2 is reduced in the regenerator is reused in the CO2 absorber, comprising:
allowing the rich solvent to exchange heat with the lean solvent; and
controlling to extract part of the rich solvent to allow the part to bypass the heat exchanger, and to be supplied into a top of the regenerator without exchanging heat so as to minimize a sum of an enthalpy that is taken out of the regenerator as CO2 gas accompanying steam and an enthalpy that is a result of subtracting an enthalpy of the rich solvent before heat exchange in the heat exchanger from an enthalpy of the lean solvent after the heat exchange.
7. The CO2 recovery method according to claim 6 further comprising allowing the part of the rich solvent that has bypassed the heat exchanger and been guided into the top of the regenerator to exchange heat in an upper section of the regenerator.
8. The CO2 recovery unit according to claim 6 further comprising allowing the part of the rich solvent that has bypassed the heat exchanger to exchange heat with the CO2 gas accompanying steam extracted from the regenerator.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A communication system, comprising:
a voice-only system configured to provide voice services;
a video communication system configured to provide video communication services; and
a video call distributor comprising,
a plugin configured to transfer data between the video call distributor and the voice-only system, and
a core configured to receive first commands from the voice-only system and to transmit second commands to the video communication system in accordance with the received commands.
2. The communication system of claim 1, wherein the core is further configured to establish a video call over the video communication system based on the first commands.
3. The communication system of claim 1, wherein the core is further configured to process the first commands prior to transmitting the second commands.
4. The communication system of claim 1, wherein the first commands are in a format compatible with the voice-only system, and the second commands are compatible with the video communication system.
5. The communication system of claim 1, wherein the voice-only system is a voice-only call management system, configured to receive incoming voice-only calls and to identify one of a plurality of agents based on user request information provided during the voice-only call.
6. The communication system of claim 5, wherein the user request information is provided via a DTMF signaling device.
7. The communication system of claim 6, wherein the DTMF device is a part of the voice-only call management system.
8. The communication system of claim 6, wherein the DTMF device is a telephone handset.
9. The communication system of claim 6, wherein a menu tree is utilized to provide the user request information.
10. The communication system of claim 1, wherein the plugin is a hardware component.
11. The communication system of claim 1, wherein the plugin is software component.
12. The communication system of claim 1, wherein the core has a distributed architecture.
13. The communication system of claim 1, wherein the voice-only system is a PBX.
14. The communication system of claim 1, wherein the video call distributor resides within a service provider grade IP Packet-Based WAN network.
15. The communication system of claim 1, wherein the video call distributor resides within a private enterprise IP LAN network.
16. The communication system of claim 1, wherein the plugin is configured to transfer data via either an XML or a JAVA call control protocol.
17. The communication system of claim 1, wherein the voice-only system is configured to receive the first commands from a voice-only telephone.
18. The communication system of claim 1, wherein the video call distributer is configured to transfer data between the video communication system and a plurality of voice-only systems.
19. The communication system of claim 1, wherein each of the plurality of voice-only systems has a different format.
20. The communication system of claim 2, wherein the core is configured to determine a recipient of the video call based on a skills-based routing mechanism.
21. A video call system for providing video communication, comprising:
a voice-only call system configured to provide voice services;
a video communication system configured to provide video communication services;
a plugin configured to transfer data between the video communication system and the voice-only call system, and
a core configured to receive first commands from the voice-only call system and to transmit second commands to the video communication system in accordance with the received commands.
22. The video call system of claim 21, wherein the core is further configured to establish a video call over the video communication system based on the first commands.
23. The video call system of claim 22, wherein the core is configured to determine a recipient of the video call based on a skills-based routing mechanism.
24. The video call system of claim 21, wherein the voice-only call system is a voice-only call management system, configured to receive incoming voice-only calls and to identify one of a plurality of agents based on user request information provided during the voice-only call.
25. The video call system of claim 21, wherein a voice-only telephone is used to provide the first commands to the voice-only call system.
26. A video call distributor, comprising:
at least one plugin configured to transfer data between a video communication system and an at least one voice-only call system, and
a core configured to receive first commands from the at least one voice-only call system and to transmit second commands to the video communication system in accordance with the received commands.
27. The video call distributor of claim 26, wherein the core is further configured to establish a video call based on input from the voice-only call system.
28. The video call distributor of claim 26, wherein the core is further configured to receive first commands from a plurality of voice-only call systems.