以多床體變壓吸附分離廢氣中二氧化碳之研究

STUDY ON SEPARATION OF CARBON DIOXIDE FROM WASTE GAS BY MULTIPLE-BED PSA

盧佩珍(Pei-Jen Lu)

指導教授 ： 陳泰祥

大同大學/工程學院/化學工程學系所/碩士(2006年)

摘要

由於溫室效應的影響，二氧化碳之減量一直是目前各方面所關心的重要議題。除了各種以二氧化碳為原料的反應研究被大量探討外，前提是需先將廢氣中的二氧化碳分離與濃縮出來，才能用以作為後續反應原料。在本實驗中是使用分離、濃縮氧氣且已經商業化的多床體變壓吸附法來分離混合氣中的二氧化碳，而混合氣的氣體比例是模擬火力發電廠所產生的廢氣。
藉由改變進料流速、旋轉閥的速度、進料濃度、進料溫度以及底部出口端的速度來增加二氧化碳的濃縮比以及回收率。然而結果顯示，由於受到原本用來分離回收氧氣的多床體變壓吸附法影響，所得到的二氧化碳濃縮比不高。儘管這些受到這些限制，從實驗結果當中依然可以了解到如何去改裝多床體變壓吸附法來回收二氧化碳。

關鍵字

變壓吸附 ； 二氧化碳 ； 回收率 ； 濃縮比

並列摘要

Due to the green house effect, the reduction and recovery technology of carbon dioxide becomes an important research topic nowadays. In addition to the researches about using carbon dioxide as a reactant, the recovery and concentration of carbon dioxide from waste gas are the key issues. In this study, multiple-bed-PSA module designed to separate and concentrate oxygen from air for medical purpose and a commercial product was used to study the feasibility of recovery CO2 from gaseous mixture. The gaseous mixture was simulation of waste gas from power plant.
The influences of some operation parameters of multiple-bed PSA including feed flow rate, rotary valve speed, CO2 concentration, feed temperature, and bottom-outlet flow rate were studied in various conditions. The results show the CO2 concentration was low under the physical limitation. In spite of the limitation, the results can be used to repack the multiple-bed PSA for CO2 recovery.

並列關鍵字

CO2 concentration ratio ； PSA ； CO2 ； CO2 recovery yield

參考文獻

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