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STUDY ON HEAVY-DUTY COMBUSTION IN CATALYTICALLY STABILIZED THERMAL REACTOR

催化稳定热反应器重负荷燃烧研究

基本信息

批准号：
08650261
负责人：
ONO Shinsuke
金额：
$ 1.41万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650261/
关键词：
Catalytic Combustion Homogeneous Gaseous Reaction Lean Burn Flame-less Combustion Gas Turbine Combustor NOx Heat Resistivity

项目摘要

When the required inlet temperature of a gasturbine is around 1400ﾟC,the flame-less buming by using the catalytically stabilized combustor. Since the working tmperature of the reactor does not exceed th minimum flame temperature, a low NOx reaction can be achieved. However, thermal durability of catatlyzer arrest the development of such a high temperature catalytic combustor. One of the breakthrough for a problem of thermal durability may be a use of CST combustor. The exhaust gas from a catalytic combustor is re-heated up to the required temperature by combustion of the additional fuel in the thermal reactor following after the catalytic reactor. The present research was carried out to develop a mixing method without flame initiation. The maximum temperattLre of the catalyzer must be kept below 100ﾟC for the present heat resistivity. In order to arrest an unnecessary temperature rise at any local zone in the reactor, it is necessary for a secondary mixture to be rapidly mixed with the hot exhaust from catalytic combustor so as to avoid a flame initiation at the nozzle port under a blow-off or a blow-out condition. The experimental results at th elevated pressure from latm to 4atm, showed that over a certain level of pressure, a flame-less mixing, and a stable combustion are possible even in a relatively smau volume of the reactor. Thus a temperature rise with a low NOx combustion is achieved by the low temperature thermal reaction of fuels.

当燃气轮机要求的进口温度为1400 ℃左右时，采用催化稳定燃烧室可实现无焰燃烧。由于反应器的工作温度不超过最低火焰温度，因此可以实现低NOx反应。然而，催化剂的热耐久性阻碍了这种高温催化燃烧器的发展。CST燃烧室的使用可能是解决热耐久性问题的突破口之一。来自催化燃烧器的废气通过在催化反应器之后的热反应器中燃烧附加燃料而被再加热至所需温度。本研究旨在开发一种无火焰引发的混合方法。对于目前的耐热性，催化剂的最高温度必须保持在100 ℃以下。为了阻止反应器中任何局部区域的不必要的温度升高，必须使二次混合物与来自催化燃烧器的热排气快速混合，以避免在吹离或吹出条件下在喷嘴端口处的火焰引发。实验结果表明，在1atm ~ 4atm的压力范围内，即使在较小的反应器容积内，也可以实现无焰混合和稳定燃烧。因此，通过燃料的低温热反应实现了具有低NOx燃烧的温度升高。