Abstract: A method and system for increasing olefin production and quality from a hydrocarbon feed comprising a fully integrated multi-stage catalyst regeneration zones with multi-stage reaction zones in series and/or parallel. The multi-stage regeneration with at least one partial and one full burn zone provides an independent control to achieve the lowest possible regenerated catalyst temperature, resulting in highest possible catalyst to oil ratio required to maximize olefins yields through increased catalytic cracking in a multi stage FCC riser/risers.

Abstract: A method and system for increasing olefin production and quality from a hydrocarbon feed comprising a fully integrated multi-stage catalyst regeneration zones with multi-stage reaction zones in series and/or parallel. The multi-stage regeneration with at least one partial and one full burn zone provides an independent control to achieve the lowest possible regenerated catalyst temperature, resulting in highest possible catalyst to oil ratio required to maximize olefins yields through increased catalytic cracking in a multi stage FCC riser/risers.

Abstract: A communication apparatus comprises antenna circuitry configured to, during a communication session, transmit uplink messages to a base station and receive downlink messages from the base station. The apparatus also comprises time adjustment decoding circuitry to decode a time adjustment from a message received from the base station, and time adjustment application circuitry to apply the time adjustment to the uplink messages. The time adjustment application circuitry is capable of applying both of a positive time adjustment to advance a given uplink message and a negative time adjustment to retard the given uplink message.

Abstract: A base station apparatus comprises antenna circuitry to transmit messages to and receive messages from a target communication apparatus. The base station apparatus comprises circuitry to determine an indication of a propagation delay in messages sent between the base station apparatus and the target communication apparatus, and circuitry to determine a time adjustment to be communicated to the target communication apparatus based on the indication of the propagation delay. The time adjustment is calculated such that when an uplink message to which the time adjustment has been applied is received at the base station apparatus, a given boundary between temporal segments in the received uplink message aligns with a reference boundary selected in dependence on which of a plurality of defined ranges the indication of the propagation delay falls within.

Abstract: There is provided an apparatus and method, the apparatus comprising an antenna system to communicate with a further antenna system. The apparatus includes computation circuitry to calculate a timing advance, restricted to a predefined range, to be applied by the further antenna system, to modify a transmission time for uplink data corresponding to a sub-frame relative to a reception time for downlink data corresponding to the sub-frame at the further antenna system. The computation circuitry is configured to estimate a round trip time, when the round trip time is within the predefined range, to set the timing advance based on the round trip time, and when the round trip time is outside of the predefined range, to set the timing advance to a value within the predefined range, wherein a difference between the value and the round trip time is based on a duration of one or more sub-frames.

Abstract: Wireless base stations and operating methods therefor are disclosed, where the wireless base station is configured for wireless communication with a plurality of terminals and comprises an antenna array to generate a plural beams. A scheduler allocates wireless resources comprising the plural beams and plural resource block groups. The wireless resource allocation for a given timeslot comprises an initial and an iterative stage, the initial stage comprising: selecting a first beam for allocation to a first terminal and determining a first selected subset of RBGs that satisfy a channel quality threshold. The iterative stage comprises selecting a further beam for allocation to a further terminal and determining a candidate subset of RBGs that each do not have expected interference above an interference tolerance threshold for any already-allocated resource. From this subset an allocation is made to satisfy a channel quality threshold. The iterative stage is repeated as required.

Abstract: There is provided an apparatus that includes communication circuitry for receiving information indicative of quality of a wireless downlink connection. Scheduling circuitry determines a subset of downlink resource blocks allocated to the wireless downlink connection based on the quality of the wireless downlink connection and a spectrum distribution of power across the downlink resource blocks. Power control circuitry allocates a budget of the power to the subset of downlink resource blocks according to the spectrum distribution of the power. The spectrum distribution of the power is non-uniform across the downlink resource blocks.

Abstract: In brief overall summary there is provided an apparatus and a method of operating an apparatus, the apparatus is comprising: communication circuitry configured to receive information indicative of a quality of a wireless uplink connection; and scheduling circuitry configured to determine an uplink transmission configuration defining a subset of uplink resource blocks allocated to the wireless uplink connection, the subset of uplink resource blocks determined based on a simultaneous consideration of both of the quality of the wireless uplink connection and a power spectrum distribution of a total power budget across the uplink resource blocks, wherein the power spectrum distribution is non-uniform across the uplink resource blocks.

Abstract: A base station for wireless communication is provided. The base station including communication circuitry configured to, during transmission time slots, transmit downlink data for reception by terminals, and configured to, during reception time slots, receive uplink data transmitted by the terminals. Downlink scheduling circuitry determines, for each transmission time slot, downlink data allocations, each identifying a terminal to which downlink data is to be transmitted, and wireless communication resources to be used by the wireless communication circuitry to transmit the downlink data to the identified terminal. Uplink scheduling circuitry determines a candidate list of uplink data allocations identifying, for reception time slots, terminals to be allocated to transmit uplink data within the reception time slots and, for each identified terminal, the wireless communication resources to be used.

Abstract: A base station for wireless communication with a plurality of terminals and a method of operating a base station are described. The base station comprises downlink scheduling circuitry to perform a downlink scheduling process and uplink scheduling circuitry to perform a corresponding uplink scheduling process, the uplink scheduling process being constrained based on results of the downlink scheduling process. In addition, the uplink scheduling circuitry is configured to provide, to the downlink scheduling circuitry, a control signal to influence the downlink scheduling process.

Abstract: An apparatus includes a riser reactor within the reaction vessel. The riser reactor defines a longitudinal axis and including a riser reactor inlet at one end and at least one riser reactor outlet at an opposite end. The apparatus includes a separation vessel including at least one separation chamber and at least one collection chamber distributed in an alternating manner about the longitudinal axis. Each separation chamber comprises two vertical lateral walls which also comprise a wall of an adjacent one of the at least one collection chamber. A lateral separation chamber outlet is defined in at least one of the vertical lateral walls to provide fluid and particle communication from the lateral separation chamber to the adjacent one of the at least one collection chamber. The separation vessel includes at least one collection chamber deflector positioned in the at least one collection chamber.

Abstract: An apparatus includes a riser reactor within the reaction vessel. The riser reactor defines a longitudinal axis and including a riser reactor inlet at one end and at least one riser reactor outlet at an opposite end. The apparatus includes a separation vessel including at least one separation chamber and at least one collection chamber distributed in an alternating manner about the longitudinal axis. Each separation chamber comprises two vertical lateral walls which also comprise a wall of an adjacent one of the at least one collection chamber. A lateral separation chamber outlet is defined in at least one of the vertical lateral walls to provide fluid and particle communication from the lateral separation chamber to the adjacent one of the at least one collection chamber. The separation vessel includes at least one collection chamber deflector positioned in the at least one collection chamber.

Abstract: A packing system includes a first packing element layer including a plurality of blades and a second packing element layer including a plurality of blades. The packing system includes intra-layer variation and/or inter-layer variation. Intra-layer variation includes (i) varying spacing between blades within the first and/or the second packing element layer, (ii) varying sizes of the blades within the first and/or the second packing element layer, and/or (iii) varying angle of inclination of the blades within the first and/or second packing element layer. Inter-layer variation includes the blades of the first packing layer having a first spacing, a first size and a first angle of inclination, and the blades of the second packing layer having a second spacing, a second size, and a second angle of inclination. The second spacing, size, and/or angle of inclination is different from the first spacing, size, and/or angle of inclination.

Abstract: A fluid distribution device includes a riser having a first end and a second end. A cap operatively connected to the second end of the riser. The cap includes an inner surface and an outer surface with a plurality of holes defined between the inner and outer surface. The device includes at least one distribution arm extending radially outward from the cap. The at least one distribution arm has an interior surface and an exterior surface. The at least one distribution arm includes a plurality of holes between the interior surface and the exterior surface. A processing assembly includes a vessel defining an interior space and the fluid distribution device including a riser mounted in the interior space of the vessel having a first end mounted to the vessel and a second end opposite from the first end.

Abstract: A method and system for increasing olefin production and quality from a hydrocarbon feed comprising a fully integrated multi-stage catalyst regeneration zones with multi-stage reaction zones in series and/or parallel. The multi-stage regeneration with at least one partial and one full burn zone provides an independent control to achieve the lowest possible regenerated catalyst temperature, resulting in highest possible catalyst to oil ratio required to maximize olefins yields through increased catalytic cracking in a multi stage FCC riser/risers.

Abstract: A packing system includes a first packing element layer including a plurality of blades and a second packing element layer including a plurality of blades. The packing system includes intra-layer variation and/or inter-layer variation. Intra-layer variation includes (i) varying spacing between blades within the first and/or the second packing element layer, (ii) varying sizes of the blades within the first and/or the second packing element layer, and/or (iii) varying angle of inclination of the blades within the first and/or second packing element layer. Inter-layer variation includes the blades of the first packing layer having a first spacing, a first size and a first angle of inclination, and the blades of the second packing layer having a second spacing, a second size, and a second angle of inclination. The second spacing, size, and/or angle of inclination is different from the first spacing, size, and/or angle of inclination.

Abstract: A method and system for increasing olefin production and quality from a hydrocarbon feed comprising a fully integrated multi-stage catalyst regeneration zones with multi-stage reaction zones in series and/or parallel. The multi-stage regeneration with at least one partial and one full burn zone provides an independent control to achieve the lowest possible regenerated catalyst temperature, resulting in highest possible catalyst to oil ratio required to maximize olefins yields through increased catalytic cracking in a multi stage FCC riser/risers.

Abstract: A fluid distribution device includes a riser having a first end and a second end. A cap operatively connected to the second end of the riser. The cap includes an inner surface and an outer surface with a plurality of holes defined between the inner and outer surface. The device includes at least one distribution arm extending radially outward from the cap. The at least one distribution arm has an interior surface and an exterior surface. The at least one distribution arm includes a plurality of holes between the interior surface and the exterior surface. A processing assembly includes a vessel defining an interior space and the fluid distribution device including a riser mounted in the interior space of the vessel having a first end mounted to the vessel and a second end opposite from the first end.

Abstract: The present disclosure is directed to an apparatus and a compact riser separation system for separating a gaseous mixture from a stream of particles entering from a central riser reactor used for cracking a hydrocarbon feed with the stream of particles. The apparatus provides improved gas solid separation efficiency and maximize containment of the hydrocarbon and minimize residence time in the separation system and thereby minimizing undesired post riser cracking reactions.

Abstract: A method and system for increasing olefin production and quality from a hydrocarbon feed comprising a fully integrated multi-stage catalyst regeneration zones with multi-stage reaction zones in series and/or parallel. The multi-stage regeneration with at least one partial and one full burn zone provides an independent control to achieve the lowest possible regenerated catalyst temperature, resulting in highest possible catalyst to oil ratio required to maximize olefins yields through increased catalytic cracking in a multi stage FCC riser/risers.