公开(公告)号：US4492570A

公开(公告)日：1985-01-08

申请号：US528970

申请日：1983-09-02

申请人： Takeshi Suzuki ,  Mikio Murao ,  Masahiro Uchida ,  Chikanori Kumagai ,  Yasuhiko Yotsui

发明人： Takeshi Suzuki ,  Mikio Murao ,  Masahiro Uchida ,  Chikanori Kumagai ,  Yasuhiko Yotsui

IPC分类号： F27B7/20 ,  F27B7/40 ,  F27B7/02

CPC分类号： F27B7/2033 ,  F27B7/40

摘要： A calcining system wherein raw material is preheated by raw material preheating device for preheating the raw material by contact with a gas, calcined in a rotary kiln and cooled in a planetary cooler; a portion of cooling gas used for cooling the calcined material in the planetary cooler and heated thereby is led through an air extracting duct to the raw material preheating device and the rest of the heated cooling gas is introduced into the rotary kiln: and exhaust gases from the rotary kiln is led to the raw material preheating device. Such calcining system further includes a first damper mounted in a duct for discharging the exhaust gas from the raw material preheating device, a temperature sensor for sensing the temperature of calcined material discharged through an outlet of the planetary cooler, control device for controlling the degree of opening of the first damper when the temperature sensed by the temperature sensor rises to a high level, a second damper mounted in the air extracting duct, a gas sensor for sensing a gas component capable of indicating the condition of combustion in the rotary kiln, and control device for controlling the degree of opening of the second damper so as to bring the value of the gas component sensed by the gas sensor to a predetermined level. The flow rate of the cooling air can be controlled independently of the control of the flow rate of the air combustion, so that the temperature of the calcined material at the outlet of the planetary cooler can be kept at a predetermined level selected arbitrarily and the combustion in the rotary kiln and the calciner can be stabilized irrespective of changes in the conditions of operation.

摘要翻译： 一种煅烧系统，其中原料由原料预热装置预热，用于通过与气体接触预热原料，在回转窑中煅烧并在行星式冷却器中冷却; 用于将行星式冷却器中的煅烧材料冷却并被加热的冷却气体的一部分通过空气抽取管道引导到原料预热装置，其余的加热的冷却气体被引入回转窑中， 将回转窑导入原料预热装置。 这种煅烧系统还包括安装在用于从原料预热装置排出废气的管道中的第一阻尼器，用于感测通过行星式冷却器的出口排出的煅烧材料的温度的温度传感器， 当温度传感器感测到的温度上升到高位时，第一阻尼器的打开，安装在空气抽取管道中的第二阻尼器，用于感测能够指示回转窑内的燃烧状态的气体成分的气体传感器，以及 控制装置，用于控制第二阻尼器的打开程度，以使由气体传感器感测的气体成分的值达到预定水平。 可以独立于空气燃烧流量的控制来控制冷却空气的流量，使得行星式冷却器出口处的煅烧材料的温度可以保持在任意选择的预定水平，并且燃烧 在回转窑中，并且煅烧炉可以稳定，而与操作条件的变化无关。