Patent application number | Description | Published |
20090241773 | Use of Hydraulic Turbocharger for Recovering Energy from High Pressure Solvents in Gasification and Natural Gas Applications - The invention provides a process and system for regenerating a solvent used to remove carbon dioxide from feed gases, such as natural gas and synthesis gas. The invention employs one or more hydraulic turbochargers to transfer energy from a higher energy solvent stream to a lower energy solvent stream. This provides for a significant reduction in operating expenses. | 10-01-2009 |
20090241778 | Use of Solvent Stream as Motive Fluid in Ejector Unit for Regenerating Solvent for Absorption Unit - The invention provides a process and system for regenerating a solvent used to remove carbon dioxide from feed gases, such as natural gas and synthesis gas. The process and system employs an eductor or ejector as an alternative to the prior art's vacuum compressor that is placed on the vapor stream from a vapor flash. This process and system saves substantial capital and operating costs over the prior art. | 10-01-2009 |
20090241779 | Use of a Biphasic Turbine in a Process for Recovering Energy in Gasification and Natural Gas Applications - The invention provides a process and system for regenerating a solvent used to remove carbon dioxide from feed gases, such as natural gas and synthesis gas. The process and system employ a biphasic turbine to recover energy following pressure let down. | 10-01-2009 |
20100132552 | ZONE OR PROCESS FOR IMPROVING AN EFFICIENCY THEREOF - One exemplary embodiment can be a process for increasing an efficiency of an acid gas removal zone. The process may include passing an absorber-solvent cooling stream through a heat exchanger. Usually, the heat exchanger warms the absorber-solvent cooling stream with a lean solvent stream before removing at least a portion of the carbon dioxide remaining in the absorber-solvent cooling stream and returning a partially-lean solvent stream to an absorber. | 06-03-2010 |
20100132553 | MAINTAINING LOW CARBON MONOXIDE LEVELS IN PRODUCT CARBON DIOXIDE - A process for maintaining a low carbon monoxide content in a carbon dioxide product that is made in a synthesis gas purification process is disclosed. More particularly, the invention involves an improved process in which a portion of a loaded solvent is sent through a carbon dioxide absorber instead of to a series of carbon dioxide flash drums. | 06-03-2010 |
20100132554 | HEAT INTEGRATION FOR HOT SOLVENT STRIPPING LOOP IN AN ACID GAS REMOVAL PROCESS - Systems and processes utilize one or more methods of providing overhead waste process heat to increase the feed temperature of the hot solvent stripping regeneration loop in an acid gas removal process. A heated rich solvent stream can be the primary feed for the hot solvent stripping regeneration loop, and one or more slip streams can be heated and then combined with the heated rich solvent stream to form a combined rich solvent stream prior to further processing in downstream units to remove acid gas from the solvent. A first slip stream can be heated in a stripper gas heat exchanger by heat exchange with a stripped gas stream. A second slip stream can be heated in a regenerator exchanger by heat exchange with an acid gas stream. A third slip stream can be heated in a recycle gas exchanger by heat exchange with a compressed recycle gas stream. | 06-03-2010 |
20100132555 | PROCESS FOR A GAS REMOVAL ZONE - One exemplary embodiment can be a process for increasing an efficiency of an acid gas removal zone. The process can include sending a sour gas stream including at least one gas to a first absorber providing an overhead stream absorbing the at least one gas; withdrawing a side-stream from the first absorber and passing the side-stream through a holding tank, a side-stream fluid transfer device, and a side-stream chiller before returning the side-stream to the absorber; and passing the first absorber overhead stream to a pump-around circuit for a second absorber. Usually, the pump-around circuit may include a flash drum, a pump-around fluid transfer device and a pump-around chiller before providing a slipstream to the first absorber and another portion to the second absorber. | 06-03-2010 |
20110072969 | MAINTAINING LOW CARBON MONOXIDE LEVELS IN PRODUCT CARBON DIOXIDE - A process for maintaining a low carbon monoxide content in a carbon dioxide product that is made in a synthesis gas purification process is disclosed. More particularly, the invention involves an improved process in which a portion of a loaded solvent is sent through a carbon dioxide absorber instead of to a series of carbon dioxide flash drums. | 03-31-2011 |
20110132193 | MAINTAINING LOWERED CO IN A CO2 PRODUCT STREAM IN A PROCESS FOR TREATING SYNTHESIS GAS - The invention involves a process for maintaining a low level of carbon monoxide in a carbon dioxide product stream and also for keeping the carbon monoxide out of the fully shifted synthesis gas. The overall process is a process for treating both fully shifted and partially shifted or unshifted synthesis gas. The carbon monoxide is separately removed by a carbon monoxide stripping column and returned to the partially shifted or unshifted synthesis gas which can then undergo a shift reaction to convert the carbon monoxide to carbon dioxide. | 06-09-2011 |
20110142738 | METHOD FOR TREATING SPENT REGENERATION GAS - The invention covers a method for treating spent regeneration gas from one or more molecular sieve treaters, first in an amine solvent unit and then in a caustic unit. The amine solvent unit removes hydrogen sulfide and carbonyl sulfide and the caustic unit removes mercaptans. Optionally, there are additional treatments before the treated gas has met specifications for burning as a fuel or used for other purposes. | 06-16-2011 |
20140171716 | SEPARATION OF IMPURITIES FROM A HYDROCARBON-CONTAINING GAS STREAM - A process includes contacting a feed stream of light hydrocarbons and an acid gas with a first solvent stream to produce a first methane-enriched overhead gas stream and a first stage solvent effluent bottoms stream including absorbed methane and absorbed acid gas. The process further includes flash separating the first stage solvent effluent bottoms stream to produce a vapor fraction including the acid gas and methane a gas-depleted liquid fraction of the first stage solvent effluent bottoms stream. The process further includes contacting the first methane-enriched overhead gas stream with a second solvent stream to produce a second methane-enriched overhead gas stream and a second stage solvent effluent bottoms stream including absorbed methane CO | 06-19-2014 |