Patent ID: 8828107
Filing Date: 2014-09-09
Classification: C01B,F28D

Abstract:
1. A process for recovering energy from a hydrogen-bearing synthesis gas stream comprising: a. providing a first heat exchanger having at least four separate flow circuits; b. supplying a first hot hydrogen-bearing synthesis gas stream to a first flow circuit of said first heat exchanger; c. supplying a first cool heat exchange medium to a second flow circuit of said first heat exchanger whereby said hot hydrogen-bearing synthesis gas stream is cooled by indirect heat exchange with said first cool heat exchange medium; d. feeding a second cool heat exchange medium to a third flow circuit of said first heat exchanger whereby said hot hydrogen-bearing synthesis gas stream is cooled by indirect heat exchange with said second cool heat exchange medium; e. feeding a third cool heat exchange medium to a fourth flow circuit of said first heat exchanger whereby said hot hydrogen-bearing synthesis gas stream is cooled by indirect heat exchange with said third cool heat exchange medium; and f. removing cooled hydrogen-bearing synthesis gas stream from said heat exchanger; wherein said first heat exchanger is divided into at least a first section and a second section; indirect heat exchange between the hot hydrogen-bearing synthesis gas stream and the second cool heat exchange medium is performed only in said first section of said first heat exchanger and indirect heat exchange between the hot hydrogen-bearing synthesis gas stream and the third cool heat exchange medium is performed only in said first section of said first heat exchanger and indirect heat exchange between the hot hydrogen-bearing synthesis gas stream and the first cool heat exchange medium is performed in both the first section and the second section of said first heat exchanger.