Wednesday, July 31, 2019

Net Zero Natural Gas Plant -- The Game Changer  (NOT SO FAST) 

The process involves burning fossil fuel with oxygen instead of air to generate electricity without emitting any carbon dioxide (CO2). Not using air also avoids generating NOx, the main atmospheric and health contaminant emitted from gas plants.
Included in a group of technologies known as carbon capture and sequestration (CCS), zero-emission fossil fuel plants have been a dream never realized in practice, as it always seems to cost a lot, adding between 5¢ and 10¢ per kWh. This is probably because most attempts just add on another step after the traditional electricity generation steps, almost as an afterthought.
Some fossil fuel plants have tried, and failed, the most famous one recently being the $7.5 billion coal power plant in Kemper, Mississippi.
But this new technology completely changes the steps and the approach from the ground up. It is based on the Allam Cycle, a new, high-pressure, oxy-fuel, supercritical CO2 cycle that generates low-cost electricity from fossil fuels while producing near-zero air emissions.
The CO2 angle is very unique. NET Power’s plant produces a high-pressure, high-quality CO2 byproduct that is pipeline-ready.This CO2 can be sequestered or used in industrial processes, such as enhanced oil recovery. EOR is a decades-old process that uses CO2 to extract significantly
Most industrial CO2 capture technologies cannot produce cost-effective, EOR-ready CO2, despite the fact that the industry is tremendously CO2-starved. NET Power will have both the capacity and economics to enable the EOR industry to unlock this vast resource while simultaneously sequestering CO2 from thousands of power plants below ground.
And it is the sequestering of CO2 that is probably the most difficult part of this process. Yes, we can use CO2 now, but if we go to these net zero plants in a big way, we don't have enough industrial need for all the CO2 from generating trillions of kWhs every year.
So it will have to be injected underground, and so far that hasn’t been successful in any big way without some side effects, like earthquakes. 
But that is a geoengineering need we can address.

READ THE REST OF THE ARTICLE HERE 


STEPS 1 & 2


This CO2 can be sequestered or used in industrial processes, such as enhanced oil recovery. EOR is a decades-old process that uses CO2 to extract significantly  more oil from old oilfields while permanently storing CO2 underground. 


No comments:

Post a Comment