Abstract
Most of the available techniques for CO2 capture are
solvent-based and suffer inherit limitations and impediments. The existing
technologies are unfavorable due to high raw material cost, severe energy
penalty costs, requirement for several pretreatment steps prior to carbonation
process, corrosiveness, and fast degradation of the sorbent.Researchers at FIU have proposed a new method able to bypass
these limitations for carbon capture by using sorbent, which is readily
accessible at any iron and steel industries. The suggested process is also easy
to retrofit and thus does not require any severe modifications to the
conventional system. The proposed process generates hydrogen and CO2. Carbon
dioxide can either be utilized or sequestered by using the existing
technologies.This process functions by selectively capturing CO2 from the
blast furnace gas. The sorbents that can be used for the capture process can be
utilized for a large number of cycles. Once the capture capacity of the
sorbents degrades, the sorbent can be used in further processing. For example,
the sorbents can be processed in a blast furnace for the production of iron or
steel. Thus, the proposed method can advantageously reduce or even eliminate
the loss of raw materials. This system and method can be more thermodynamically
favorable and thus can save energy.
Benefit
Eliminates or reduce the loss of raw materials/sorbents Avoids any chemical pretreatment steps or chemical wastes Reduces transportation, materials and energy costs Requires little or no external energy supply Very minimal CO2 capture costs
Market Application
The present scheme can be used for simultaneous CO2 capture, H2 production and electricity generation. Implementation of the proposed process is not restricted to any particular industry but can be significantly profitable for the iron and steel industries.
Brochure
