Energy Saving I
Energy Saving by Introducing Circulating Liquid of FGD/Water Heat Exchanger on Boiler
2017 Volume 71 Issue 6 Pages 627-631
Details
2017 Volume 71 Issue 6 Pages 627-631
Nippon Paper Group was formulated Green Action Plan, that is the plan of action for environment. In Green Action Plan 2015, we formulated to reduce carbon dioxide emissions from fossil energy and the use of fossil energy. It was achieved and we formulate new target, Green Action Plan 2020, to reduce greenhouse gas emissions.
In Ishinomaki Mill, we adopt circulating heat exchanger on #1 Biomass Boiler. This is liquid of FGD （Flue Gas Desulfurization）/water heat exchanger. This heats boiler feed-water and it is energy saving by reducing the use of steam on deaerator. We installed plate heat exchanger on another boiler. This was also liquid of FGD/water heat exchanger, but it often got clogged heat exchanger for liquid of FGD and ash. So we decided to adopt spiral heat exchanger because it is strong to slurry solution like liquid of FGD. In addition, we selected the biggest heat transfer area for Kurose to be able to build it. As a result, it works well on energy saving and keeps inside clean.
