Abstract: An energy storage system includes a pneumatic vessel, a cable system attached to the vessel, a compressor for pressurizing the vessel, a generator attached to the cable system, a turboexpander generator for receiving compressed air from the vessel, and a control system. The system deflates and allows the vessel to sink in a body of water, inflates the vessel to store energy when an abundance of it exists, and allows the inflated vessel to resurface to release its buoyant energy to the generator via the cable system and to release compressed air to the turboexpander generator to generate electricity when electricity demand is high and/or electricity generation from other sources is low.

Abstract: A computer-implemented method for detecting anomalies in data from a sensor comprises receiving a plurality of data points from the sensor; determining a first anomaly score component, the first anomaly score component varying according to a Cook's Distance value; determining a second anomaly score component, the second anomaly score component varying according to a singular spectrum analysis value; determining a third anomaly score component, the third anomaly score component varying according to a rolling variance rate of change value; determining a fourth anomaly score component, the fourth anomaly score component varying according to whether a current data point is within an upper bound and a lower bound; determining a total anomaly score as a function of the anomaly score components; comparing the total anomaly score to an anomaly score threshold value; and determining the data point is an anomaly if the total anomaly score is greater than the threshold value.

Abstract: Methods and systems for reducing the pressure of a hydrocarbon-containing stream so as to provide a cooled, reduced-pressure hydrocarbon-containing stream are provided. Facilities as described herein utilize a single closed-loop mixed refrigeration system in order to facilitate transportation, loading, and/or storage of a liquefied hydrocarbon-containing material at or near atmospheric pressure. In some aspects, the facilities can include at least one separation device for removing lighter components from the feed stream, which may separately be recovered as a vapor product for subsequent processing and/or use.

Abstract: Processes and systems are provided for recovering a liquid natural gas (“LNG”) from a hydrocarbon-containing gas. More particularly, the present invention is generally related to processes and systems that optimize the chilling efficiencies of an LNG facility through the utilization of an auxiliary refrigeration cycle. Additionally, the present invention is also generally related to the rerouting of mixed refrigerants in a closed-loop refrigeration cycle in order to optimize the chilling efficiencies of the LNG facility.

Abstract: Processes and systems are provided for removing nitrogen from a hydrocarbon-containing gas to thereby recover a liquid natural gas (LNG) stream. In particular, the processes and systems described herein can be used to efficiently separate methane from nitrogen, which is an undesirable byproduct found in many hydrocarbon-containing gases used to produce LNG. The processes and systems described herein can utilize various refrigerant systems to separate and produce the LNG.

Abstract: Processes and systems are provided for recovering a liquid natural gas (LNG) stream from a hydrocarbon-containing feed gas stream using a single closed-loop mixed refrigerant cycle. In particular, the processes and systems described herein can be used to separate methane from carbon monoxide and hydrogen, which are common components in synthesis gas and other hydrocarbon-containing gases.

Abstract: Enhanced low temperature separation (LTS) processes are provided for separating light hydrocarbon components from heavy hydrocarbon components. The enhanced LTS process utilizes an absorber and a de-ethanizer tower to achieve sufficiently pure natural gas liquid (NGL) products and residue gas products. A portion of the de-ethanizer tower overhead is condensed and recycled as reflux for the absorber. The enhanced LTS process requires less refrigeration of the feed gas stream yet still achieves increased recovery of the valuable heavier hydrocarbons from hydrocarbon gas streams. The enhanced LTS process also reduces compression requirements compared to conventional LTS processes.

Abstract: A system and computer-implemented method for determining load shapes for distributed generation (DG) customers in an electricity generation, distribution, and consumption system without using direct load research data. Existing billing data may provide the amount of electricity delivered to and received from each DG customer each month, interconnection data may provide the installed on-site electricity generation capacity for each DG customer, and the average hourly output from a sample of DG or utility/community scale facility may provide a representative generation profile. The load shapes may include the load delivered to DG customers, the excess generated electricity exported back to the electricity distribution network by the DG customers, the generated electricity consumed on-site, and the load in the absence of DG facility(ies)/customer(s).

Abstract: An NGL recovery facility for separating ethane and heavier (C2+) components from a hydrocarbon-containing feed gas stream that utilizes a single, closed-loop mixed refrigerant cycle. The vapor and liquid portions of the feed gas stream are isenthalpically flashed and the resulting expanded streams are introduced into the NGL recovery column. Optionally, a second vapor stream can be flashed and then introduced into the recovery column at the same or lower separation stage than the flashed liquid stream. As a result, the NGL recovery facility can optimize C2+ recovery with compression costs.

Abstract: A mixed single refrigerant process for separating a nitrogen gas stream from a natural gas stream containing nitrogen to produce a nitrogen gas stream from a liquefied natural gas stream wherein the separated nitrogen gas stream is used as a refrigerant for the natural gas stream and wherein the mixed refrigerant provides cooling for the process.

Abstract: An NGL recovery facility utilizing a single, closed-loop mixed refrigerant cycle for recovering a substantial portion of the C2 and heavier or C3 and heavier NGL components from the incoming gas stream. Less severe operating conditions, including a warmer refrigerant temperature and a lower feed gas pressure, contribute to a more economical and efficient NGL recovery system.

Abstract: Processes and systems for producing liquefied natural gas (LNG) with a single mixed refrigerant, closed-loop refrigeration cycle are provided. Liquefied natural gas facilities configured according to embodiments of the present invention include refrigeration cycles optimized to provide increased efficiency and enhanced operability, with minimal additional equipment or expense.

Abstract: Processes and systems are provided for recovering a liquefied natural gas (LNG) stream from a hydrocarbon-containing feed gas stream using dual closed-loop mixed refrigerant cycles. In particular, the processes and systems described herein can be used to efficiently and effectively liquefy methane from a hydrocarbon-containing feed gas stream with the use of a first refrigeration system and a second refrigeration system utilizing a first mixed refrigerant and a second mixed refrigerant.

Abstract: Processes and systems are provided for recovering a liquefied natural gas (LNG) stream from a hydrocarbon-containing feed gas stream using dual closed-loop mixed refrigerant cycles. In particular, the processes and systems described herein can be used to efficiently and effectively liquefy methane from a hydrocarbon-containing feed gas stream with the use of a first refrigeration system and a second refrigeration system utilizing a first mixed refrigerant and a second mixed refrigerant. Furthermore, the first refrigeration system and second refrigeration system may be in fluid communication with a turboexpander and separator.

Abstract: Processes and systems are provided for recovering a liquefied natural gas (LNG) stream from a hydrocarbon-containing feed gas stream using dual closed-loop mixed refrigerant cycles. In particular, the processes and systems described herein can be used to efficiently and effectively liquefy methane from a hydrocarbon-containing feed gas stream by utilizing a first refrigeration system and a second refrigeration system in fluid communication with a turboexpander and separator.

Abstract: A method and system for the separation of a synthesis gas and methane mixture which contains carbon monoxide, hydrogen and methane with the process producing synthesis gas and liquid natural gas (LNG).

Abstract: Processes and systems for producing liquefied natural gas (LNG) with a single mixed refrigerant, closed-loop refrigeration cycle are provided. Liquefied natural gas facilities configured according to embodiments of the present invention include refrigeration cycles optimized to provide increased efficiency and enhanced operability, with minimal additional equipment or expense.

Abstract: Processes and systems are provided for recovering a liquid natural gas (LNG) stream from a hydrocarbon-containing feed gas stream using a single closed-loop mixed refrigerant cycle. In particular, the processes and systems described herein can be used to separate methane from carbon monoxide and hydrogen, which are common components in synthesis gas and other hydrocarbon-containing gases.

Abstract: Methods and systems for reducing the pressure of a hydrocarbon-containing stream so as to provide a cooled, reduced-pressure hydrocarbon-containing stream are provided. Facilities as described herein utilize a single closed-loop mixed refrigeration system in order to facilitate transportation, loading, and/or storage of a liquefied hydrocarbon-containing material at or near atmospheric pressure. In some aspects, the facilities can include at least one separation device for removing lighter components from the feed stream, which may separately be recovered as a vapor product for subsequent processing and/or use.

Abstract: A system for managing complex projects with a plurality of participants and entities including people and objects comprises a server device with a processing element and associated memory element. The processing element executes a server application which includes a common database interface, a common object model, a plurality of profiles, and a role-based intelligent object model. The common database interface receives first data from software applications of each participant. The common object model includes a plurality of base terms, wherein each base term is associated with at least one property corresponding to at least one participant. There is one profile for each entity involved in the project, wherein the profile defines at least one relationship with at least one other entity and includes second data related to the project. The role-based intelligent object model sends a message to other entities when the second data for one entity changes.