Industry: Power, Fertilizer.
Business Area: New Technology Analysis – Green Gas (GHG) Management
Background:
An innovation-driven company was focused on Technology & Solutions for Capture, Transport and Storage of Green Gases. One of the focus areas was to develop and offer state-of- absorption solvents for processes needing CO2 absorption from various sources including waste/flue gases. The company developed its own proprietary solvent (patented) for the above application.
Business Objective:
Relative techno-commercial evaluation of conventional solvents with the new solvent, as applied to CO2 absorption.
Solution:
Integrated Capital Cost, Operating Cost & Process Modeling.
Approach:
The project covered developing & applying a custom thermodynamics property package for the new solvent to be used as a study basis. The complete process flow sheet with conventional & new solvent was built with equipment sizing being used as the basis for capital cost & operating cost evaluation.
Column Summary
Name |
ABSTG2 |
HPSTRPPR |
LPSTRP2 |
| Number of stages | 30 | 30 | 29 |
| Condenser | NONE | NONE | NONE |
| Reboiler | NONE | KETTLE | KETTLE |
| Top stage pressure [kPa] | 109.9 | 202 | 30 |
| Specified distillate rate [kmol/hr] | 25 | 40 | |
| Calculated reflux ratio | 5.114 | 45.096 | 34.311 |
| Calculated bottoms rate [kmol/hr] | 539.843 | 403.113 | 133.305 |
| Calculated boil up rate [kmol/hr] | 92.488 | 48.899 | 5.588 |
| Calculated distillate rate [kmol/hr] | 79.192 | 8.967 | 3.895 |
| Condenser / top stage temperature [C] | 41.7 | 77.2 | 52.2 |
| Condenser / top stage pressure [kPa] | 109.9 | 202 | 30 |
| Condenser / top stage reflux rate [kmol/hr] | 404.978 | 404.379 | 133.635 |
| Reboiler pressure [kPa] | 109.9 | 202 | 30 |
| Reboiler temperature [C] | 51.3 | 122.8 | 70.3 |
| Reboiler heat duty [Watt] | 0 | 547071 | 74858 |
| Calculated boil up ratio | 0.1213 | 0.0419 | |
| Calculated mass boil up ratio | 0.1923 | 0.0879 | 0.0314 |
