A Preliminary Study of the Application of the Airlift Pump to Transport Ocean Methane Hydrates
Date Issued
2007
Date
2007
Author(s)
Chu, Hung-Chieh
DOI
zh-TW
Abstract
The methane hydrate is a chemical substance of multiple energy characteristics, which has been regarded as a future energy resource. It is found that there are a lot of methane hydrate reserve in the South –Western sea area of Taiwan. It is beneficial for us, if we can exploit the methane hydrate commercially.
The concept of this study is to use the airlift pump to transport marine methane hydrates from the sea bed up to a plant ship, in which a multi-fluid model is employed. In the transport process, the methane hydrate will decompose into methane gas and water as the pipe pressure decreasing. In this study a three phase flow behavior will be analyzed numerically in order to develop a commercialized methane hydrate recovery system.
According to the analysis of the transport process, the fluid characteristics in the pipe are always changing, especially when the fluid is close to the upper pipe outlet. Because the decomposition time rate is too small, its influence is quiet limited. It is necessary to have some changes, if the “self-air-lift” concept proposed by Hamaguchi et al. (2003) can is to realized. However, the methane hydrate itself is easier for transportation.
Subjects
甲烷水合物
氣力揚昇幫浦
多流體模式
自行氣力揚昇
methane hydrates
airlift pump
multi-fluid model
self-air-lift
SDGs
Type
thesis
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