廢棄物衍生燃料氣化之合成燃氣中HCl氣體之去除研究

A Study of Removal of HCl in Syngas from Solid Refuse Derived Fuel Gasification

羅國肇(Kuo-Chao Lo)

指導教授 ： 錢建嵩

中原大學/工學院/化學工程研究所/碩士(2002年)

https://doi.org/10.6840/cycu200200293

摘要

中文摘要
能源工業之發展帶給人們便利的生活但往往伴隨著環境破壞的負面影響，時至今日已發展出一套兼具能源及環保雙重效果之再生能源產生技術，即廢棄物氣化技術，能同時進行廢棄物處理及產生能源，台灣的廢棄物中蘊含相當多的能源，若能將廢棄物的能源利用氣化技術收集起來，對於一個能源輸入國而言能得到莫大的利益。
廢棄物的氣化技術可同時處理廢棄物及產生能源，但是處理過程之中亦會產生污染物質，若不加以處理造成二次公害，對環境亦會造成傷害。
本篇研究將針對含氯之廢棄物衍生燃料（RDF）於氣化程序中產生之HCl氣體之去除研究，採用的方法為加入鹼性之鈣吸附劑CaCO3、CaO及Ca(OH)2加以吸附去除，研究結果顯示，在800℃時添加任何鈣吸附劑對去除HCl均無顯著效果，而在700℃時添加CaCO3及CaO作為吸附劑有去除之作用，但添加Ca(OH)2不能去除HCl反而會增加HCl的生成，添加吸附劑之鈣氯當量比越高去除的效果越好，故在氣化過程中700℃的環境下同時添加鈣吸附劑以CaCO3及CaO為較佳選擇，800℃則沒有去除效果。

關鍵字

氯化氫 ； 吸附劑 ； 氣化 ； 廢棄物

並列摘要

Abstract
The gasification of waste is a technology that can look after both sides energy and environmental protection. The gasification technology usually applied to IGCC process for power generation. In IGCC process if high temperature syngas was employed, the efficiency of energy will be better than cooler syngas. So the acid gas removal technology at high temperature must be developed. In this study the calcium compound, CaCO3, CaO and Ca(OH)2 were chosen to be the sorbents added in the bubbling fluidized bed gasifer. The HCl removal ability is investigated by several factors, temperature, equivalent ratio of Ca to Cl and ER value.
The results indicate that adding Ca-based sorbents is not a good choice to remove HCl in gasification process. There is no effect of adding Ca(OH)2 to be the sorbent, furthermore, Ca(OH)2 can catalysis the formation of HCl. The other Ca-based sorbents have ability of HCl removal, but slightly. And the HCl removal ability of Ca-based sorbents prefers to lower temperature. At 800℃ the conversion of HCl is independent to added sorbents or not, and lower than operated at 700℃ with sorbents or not.

並列關鍵字

waste gasification ； Ca-based sorbents ； HCl

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