System for separating gas
AssigneeCri, Ehf
InventorsEmeric Sarron, Húni Sighvatsson, Ásgeir Ívarsson
Life of this patent
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Abstract
An improved system for separating gas from a process stream by providing a stripping unit at the overhead stream of a fractionation column to selectively and effectively remove the gas using a stripping fluid without providing a dedicated light-ends separations unit. The stripper unit may be connected to the reflux drum at the overhead stream. The system for separating gas further achieves greater thermodynamic efficiency by means of a split column design using mechanical vapor recompression with the reboiler and condenser integrated in a falling-film evaporator- or thermosiphon-type vapo-condenser.
Claims18
A system for separating a gas from a process stream, the system comprising:
- a separation unit configured to receive the process stream of a chemical process and to separate at least one component of the process stream, the separation unit comprising a first heat exchanger located at an overhead portion of the separation unit and receiving an overhead stream of the process stream from the overhead portion of the separation unit, the first heat exchanger being configured for condensing at least a portion of the overhead stream of the process stream;
- and
- a stripper unit configured to receive the condensed portion of the overhead stream of the process stream from the first heat exchanger and configured for separating the gas from the condensed portion of the overhead stream of the process stream by introducing at least one stripping fluid thereunto;
- wherein the chemical process is a process that synthesizes methanol from syngas.
A system for separating a gas from a process stream, the system comprising:
- a separation unit configured to receive a process stream of a chemical process and to separate at least one component of the process stream, the separation unit comprising a first heat exchanger located at an overhead portion of the separation unit and receiving an overhead stream of the process stream from the overhead portion of the separation unit, the first heat exchanger being configured for condensing at least a portion of the overhead stream of the process stream;
- and
- a stripper unit configured to receive the condensed portion of the overhead stream of the process stream from the first heat exchanger and being configured for separating the gas from the condensed portion of the overhead stream of the process stream by introducing at least one stripping fluid thereunto;
- wherein at least one waste gas stream comprising a portion of the at least one stripping fluid and a portion of the separated gas is generated;
- wherein the at least one waste gas stream is generated from the stripper unit and is recycled to upstream of the chemical process.
A system for separating a gas from a process stream, the system comprising:
- a separation unit configured to receive a process stream of a chemical process and to separate at least one component of the process stream, the separation unit comprising a first heat exchanger located at an overhead portion of the separation unit and receiving an overhead stream of the process stream from the overhead portion of the separation unit, the first heat exchanger being configured for condensing at least a portion of the overhead stream of the process stream;
- and
- a stripper unit configured to receive the condensed portion of the overhead stream of the process stream from the first heat exchanger and being configured for separating the gas from the condensed portion of the overhead stream of the process stream by introducing at least one stripping fluid thereunto;
- wherein at least one waste gas stream comprising a portion of the at least one stripping fluid and a portion of the separated gas is generated;
- wherein the at least one stripping fluid is a reactant of the chemical process.
A method for separating a gas from a process stream, the method comprising the steps of:
- providing a separation unit configured to receive a process stream of a chemical process and to separate at least one component of the process stream,
- providing a heat exchanger at an overhead portion of the separation unit, the heat exchanger being configured for condensing at least a portion of an overhead stream of the process stream;
- and
- providing a stripper unit configured to receive the condensed portion of the overhead stream of the process stream from the heat exchanger, the stripper unit separating a gas from the condensed portion of the overhead stream by introducing at least one stripping fluid thereto;
- wherein the chemical process is a process that synthesizes methanol from syngas.
Dependencies are inferred from the claim text.