Gasification Is Not Incineration

Despite the fact that both gasification and incineration are thermal processes, it’s crucial to highlight the benefits of gasification over incineration. Simply put, incinerating uses mass burning with heat recovery to generate steam and/or power. It has negative connotations since harmful carcinogenic substances like dioxins and furans are created during the direct combustion of the waste and may be released into the atmosphere unless highly expensive scrubbing equipment is installed. Because of this, developing incineration technology is expensive.

Gasification, in contrast, uses the process of turning trash into a syngas that may be utilised to produce power. Syngas is created in a controlled environment without the development of contaminants common to incinerator exhaust gas. The emissions from a gasification process are generally orders of magnitude less than those from an incinerator.

Understanding the distinctions between the two processes is essential to comprehending the benefits of gasification as compared to incineration:

To physically reduce to ash is to incinerate. MSW is used as a fuel in incinerators, where it is burned alongside large amounts of air to produce carbon dioxide and heat. These heated gases are utilised in an incinerator waste-to-energy facility to create steam, which is then used to produce electricity.

Gasification converts MSW to a usable synthesis gas, or syngas.

The MSW is used in the gasification process as a feedstock for a high temperature chemical conversion process rather than as a fuel. The syngas created by gasification can be used to create higher value products like a substitute for natural gas rather than merely heat and electricity.