Evaluation of the Cement Clinker Fired in the Combustion Furnace of Heavy-Oil and NH3

Presented on October 31, 2018 during the NH3 Fuel Conference 2018

Authors Hiroki Kujiraoka Tatsurou Izumi Yuya Yoshizuru Takeshi Suemasu Makoto Ueda Toyoaki Niki Takayasu Itou UBE Industries

Download this Presentation Download a PDF version of this presentation.

Abstract

In recent years, global warming caused by an increase in CO2 emission released by combustion of fossil fuel has become a big problem. To realize a low-carbon society, active use of renewable energy and promotion of hydrogen energy are necessary. We are participating in “SIP (Strategic Innovation Promotion Program) energy carriers”, developing technology to replace 30% fossil fuel with ammonia (NH3) on the calorie basis. Assuming that NH3 is used as a thermal energy for a cement kiln, we conducted the following two basic experiments.

First, we fired the clinker in the atmosphere-controlled electric furnace, calculated the reaction rate of CaO which is the main oxide in clinker by Arrhenius type kinetic model. As a result, it was found that the reaction rate of clinker was not influenced by the atmosphere conditions and was dominated by the temperature conditions.

Next, we fired the clinker in the 10 kW furnace under only heavy-oil combustion and mixed combustion of heavy-oil and NH3, identified mineral composition by X-ray diffraction (XRD)/Rietveld analysis, carried out the strength test for cement was made from the clinker. As a result, it was confirmed there was no difference in mineral composition and strength of clinker.

Topics Cement Decarbonization

Authors 36132u@ube-ind.co.jp 34574u@ube-ind.co.jp yuya.hatori@yacht.ocn.ne.jp takeshi.suemasu@ube-ind.co.jp 26318u@ube-ind.co.jp 28614u@ube-ind.co.jp takayasu.itoh@ube-ind.co.jp murai@combu.mech.eng.osaka-u.ac.jp akamatsu@mech.eng.osaka-u.ac.jp

IMO Webinar

Please join us for this informative webinar. Click here to register and get the details!

Annual Conference Presentations available

Presentations from the AEA Annual Conference are now available on the website. The presentations are organized by session and speaker within the conference schedule for your convenience.

2023 Annual Report

In 2023, AEA reached many milestones. Read about them in our 2023 Annual Report.