Heat recovery gas absorption process

A process for removing and recovering a selected gaseous component from a gas stream, the process comprising:

• flowing the gas stream through an absorber device provided with a plurality of sequentially adjacent sections, said gas stream flowing from a bottom end to a top end of the absorber device and egressing from said top end;
• commingling and contacting the gas stream therein each section of said absorber device with an absorption liquid solvent system flowing therethrough in a pattern selected from the group consisting of counterflowing and crossflowing, thereby enriching said absorption liquid solvent system with said gaseous component;
• providing conditions:
• (a) at the bottom end of said absorber device for thermodynamic-driven mass transfer of the selected gaseous component into the absorption liquid solvent system, and (b) at the top end of said absorber device for kinetic-driven mass transfer of the selected gaseous component into the absorption liquid solvent system, wherein said kinetic-driven mass transfer is provided by:
• (c) controllably cooling said absorption liquid solvent system before it is ingressed into the first section at the top end of the absorber device, and (d) by egressing said solvent system from the first section and controllably heating said solvent system before it is ingressed into the second section of the absorber device;
• providing an inverse temperature profile in the absorber device wherein a higher temperature is provided in a section adjacent to said top end of said absorber device relative to a temperature provided in a section at said bottom end of said absorber device;
• recovering said gaseous component from the absorption liquid solvent system;
• regenerating said absorption liquid solvent system in a regenerator, said regenerator cooperating with a reboiler;
• and
• recycling said absorption liquid solvent system to the absorber device.

A process for removing and recovering a selected gaseous component from a gas stream, the process comprising:

• flowing the gas stream through an absorber device provided with a plurality of sequentially adjacent sections;
• delivering a controllably cooled lean absorption liquid solvent to the top section of said absorber device, flowing said cooled lean absorption liquid solvent in a pattern selected from the group consisting of counterflowing and crossflowing, and commingling said cooled lean absorption liquid solvent with the gas stream thereby removing a portion of said gaseous component from the gas stream into said liquid solvent, egressing said liquid solvent from a bottom portion of said top section, and controllably heating the temperature of said egressed liquid solvent;
• ingressing the heated liquid solvent into a top portion of a section of the absorber device adjacent to the top section, flowing said heated liquid solvent in a pattern selected from the group comprising counterflowing and crossflowing, and commingling said heated liquid solvent with said gas stream thereby removing an additional portion of said gaseous component from the gas stream thereby enriching the liquid solvent system with said gaseous component, egressing said liquid solvent from a bottom portion of said the section adjacent to the top section, and controllably cooling the temperature of said egressed liquid solvent;
• recovering said gaseous component from the enriched liquid solvent system;
• regenerating said liquid solvent into a lean absorption liquid solvent system;
• and
• controllably cooling and delivering said absorption liquid solvent system to the top section of the absorber device.