モノエタノールアミン水溶液を使った充てん塔のCO_2吸収特性

概要

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A solar hydrogen-methanol energy system for the transportation sector in Japan has been proposed by the authors, in which methanol is supposed to be produced with hydrogen and carbon dioxide and to be delivered as a fuel : the hydrogen is supposed to be produced by overseas sites of photovoltaic array and CO_2 is to be recovered in the consumer's side and to be transported back to the production site. In this context, CO_2 recovery equipment is to be developed for heat engines used in transportation. But there is few data applicable to design of the CO_2 recovery equipment for the heat engines. In this paper, the absorption part of the CO_2 recovery equipment is discussed. Experiments were conducted on the CO_2 absorption characteristics of packed columns using aqueous solutions of monoethanolamine (MEA). The effects such as flow rate, temperature and concentration of the absorbent and flow rate and CO_2 concentration of the gas on the overall mass transfer coefficient, K_ya, based on gas phase are discussed. All the experimental results are reduced to an empirical formula for the number of transfer unit. On the basis of the formula, dimensions of packed column CO_2 absorbers for two kinds of marine diesel engines fueled with methanol are estimated.
独立行政法人海上技術安全研究所の論文
1994-10-30