Advances in Amine-Based and Other Carbon Capture Technologies

CETRi’s approach to advances in amine-based carbon capture technologies is characterized by a set of transformational and forward-thinking scientific strategies that will drastically reduce the cost of the Carbon Capture Utilization and Storage (CCUS) technology as well as provide unique cost effective options to utilize the captured CO2 to produce value added products. Additionally, these technologies aim provide tools that will ensure compliance of the CCUS process with health, safety and environment (HSE) standards.

CETRi is researching and developing a breakthrough and game-changing catalyst-aided amine-based post-combustion CO2 capture technology, which uses a solid alkaline catalyst to replace the typical packing internals in the absorber, and a solid acid catalyst to replace the typical packing internals in the desorber. As a result of catalysis, the heat requirement for solvent regeneration is drastically reduced, approaching the theoretical limit thereby resulting in drastically reduced operating costs. As well, the kinetics of both absorption and desorption of CO2 is significantly faster due to catalysis, thereby resulting in smaller vessel and equipment sizes and consequently lowering the capital costs. In addition, with the catalysis, it is now possible to use hot water instead of steam for solvent regeneration if desired. This technology provides the opportunity to make a strong case for CCUS is business applications, rather than depending solely on policy. This is the first time that heterogeneous catalysis technology has been introduced to CO2 capture, and an attempt is being made to provide universal standards for HSE in CCUS. This technology is applicable to CO2 captured from power plant flue gas, natural gas, refinery gas, biogas, and gas from cement manufacturing, as well other applications.

CETRi is also researching and developing unique approaches to CO2 utilization with the objective of producing value-added products. The first approach involves CO2 reforming of natural gas, stranded gas and biogas to produce syngas, which can be used to produce synthetic fuels and fine chemicals (see Hydrogen Energy and Synthesis Gas (Syngas) Technologies). Captured CO2 from CCUS will supply part of the needed CO2 for this process. The second approach is CO2-based sub/supercritical hydrothermal liquefaction of flax straw (an abundant and persistent byproduct of the local farming community) to produce fine chemicals (see Biomass Technologies).

CETRi is also working on other carbon capture and utilization technologies such as carbornation of steel slag and gasification technologies.