摘要CO2 的减排问题正逐步引起世界各国高度的重视，各种减排技术也受到众多学者青 睐，得到验证和推广。其中碱金属基吸收剂干法捕集 CO2 技术由于其成本低、对设备无 腐蚀、无二次污染等优点成为研究的热点。为解决再生反应能耗高，反应进行缓慢的问 题，本项毕业设计通过热重分析、XPS 等试验手段研究了负载型钾基吸收剂的催化再生 特性，分别深入分析了不同气氛、再生反应分解终温以及不同催化剂对再生反应的转化 率和反应速率等特性的影响，并且通过几种化学反应动力学模型求得了动力学参数，得 出了以下结论：N2 气氛有利于再生反应的进行；转化率和反应速率随着温度的升高而升 高；氧化锆是负载型钾基吸收剂再生反应的理想催化剂，可使活化能降低 30%左右，具 有良好的催化效果。79508

毕业论文关键词 负载型钾基吸收剂 γ-Al2O3 催化再生 氧化锆 活化能

毕 业 设 计 说 明 书 外 文 摘 要

Title Catalytic desorption performance of potassium-based sorbent

Abstract Reduction of CO2 emissions is gradually paid worldwide attention, and kinds of emission reduction technologies were favored by many scholars, and got the promotion and application。Using alkali metal based sorbents for CO2 capture has become a hot area of research because of its low cost、no corrosion to equipment and non-secondary pollution。 To solve the problem of high energy consumption and the slow rate of reaction in the desorption reaction，we used TGA, XPS experimental methods to study the catalytic desorption performance of the loaded

potassium-based sorbents in this graduation thesis。 During the test, we analyzed respectively and deeply the effects of reaction conditions (such as atmosphere, the final temperature and catalysts) on desorption conversion efficiency and reaction rate。 The reaction kinetic parameters are calculated by several chemical kinetic models。 Finally, some main conclusions are obtained as follows: N2 atmosphere is available for the desorption reaction; the conversion efficiency and reaction rate increase with the increasing of temperature; ZrO2 is the promised catalyst for the supported potassium-based absorbent, which will enable activation energy reduced by 30% or so with good catalytic effect。

Keywords potassium-based sorbents γ-Al2O3   catalytic desorption regeneration activation energy

本科毕业设计说明书 第 I 页

目 次

1 绪论 1

1。1 研究背景及意义 1

1。2 CO2 减排技术 2

1。3 碱金属干法捕集 CO2 技术 5

1。4 本文研究内容及目的 8

2 试验部分 10

2。1 钾基吸收剂活性组分和载体 10

2。2 负载型钾基吸收剂的制备 11

2。3