摘要在利用碱金属基吸收剂法捕集CO2的技术中，选择合适的反应装置也是该技术的关键所在。国内外研究表明：固定床和鼓泡流化床结构简单，吸收剂在反应器内有足够的停留时间，但较难实现物料循环脱碳；输运床-再生鼓泡床能够保证稳定的物料循环特性，但在输运床内气固接触时间短，严重影响了脱碳效率；单鼓泡流化床同时实现脱碳再生过程需要不停切换脱碳-再生反应条件，不能实现稳定的脱碳-再生循环过程。本文设计了一种基于输运床鼓泡床耦合的脱碳-再生循环试验装置，该装置既保证了气体和固体在反应器内有足够的接触时间，又能稳定地实现脱碳-再生循环过程，是一种有效的，且与碱金属基固体吸收剂相匹配的反应器。83245

毕业论文关键词  CO2捕集  碱金属吸收剂  输运床鼓泡床耦合

毕业设计说明书外文摘要

Title      Design of "CO2 Capture—Absorbent Regeneration"     Transported Bed and Bubbling Bed Coupled Stacked Reactor

AbstractUsing alkali—based sorbents for CO2 capture from flue gas is a promising choice to reduce CO2 emission,and select the appropriate reaction apparatus is the key to the development of this technology。Researches have shown that: Fixed bed, bubbling fluidized bed have simple structure,absorbent in the reactor have sufficient residence time, but more difficult to achieve material circulation decarbonization。 Decarbonization transport bed—regeneration bubbling bed can ensure a stable material cycle characteristics, but the residence time for the gas—solidin the transport bed is limited, seriously affecting the decarbonization efficiency。 Single bubbling fluidized bed reactor needs to be constantly switched the decarbonization-regeneration reaction conditions when achieving decarbon- ization and regeneration process ,and can not achieve a stable decarbonization -regeneration process。 Based on this, we design a transported bed and bubbling bed coupled stacked reactor including decarbonization—regeneration cycle device which does not only ensure the gas—solid residence time in the reactor, but also to achieve stable decarbonization—regeneration cycle。 This system is an effective reactors maching the alkali metal-based solid absorbents。 

Keywords  CO2 capture；  Alkali-based sorbent；  Transported Bed and Bubbling Bed 

目   次

1  绪论 1

1。1  研究现状及背景 1

1。2  碱金属基干法脱除CO2的基本原理 1

1。3  碱金属碳捕集技术的国内外发展现状 2

1。4  本设计的预期效果 6

2  设计过程 7

2。1  碳酸化反应器设计计算过程 7

2。2  碳酸化反应器热力计算 22

2。3  再生反应器设计计算过程 27

2。4  再生反应器热力计算 31

2。5  返料段 34

2。6  返料段热力计算 36

3  设计图纸 38

结  论 64

致  谢 65

参 考 文 献 66

1  绪论

1。1  研究现状及背景