電気集じん機の化学工学的研究 第3報

帯電液柱を放電極とした電気集じん器の集じん性能

抄録

The most common problems of discharge electrodes in electrostatic precipitators are associated with failures of mechanical, electrical and chemical factors. We carried out tests utilizing an electro-charged water column for discharge electrodes instead of the wires. This system is applied to both a wet and dry process. In the former process, the electro-charged water column and electro-charged droplets are generated by the application of a high voltage directly to water. Dust particles are collected by electrostatic force and scrubbing. In the latter process, an electro-charged water column is produced to use a straight nozzle and is charged negatively with a 10-30kV power supply. Calcium carbonate is used for the test powder.
The main results are summarized as follows: (1) Although this system is looked forward to as being a new precipitator type having two features, both electrostatic precipitators and scrubbers in a wet process, it is similiar to the collection mechanism in comparison with the conventional wet type of electrostatic precipitators; (2) In a dry process, the electrical characteristics of an electro-charged water column have advantages over that of wires. This system is achieved to attain the maximum electric power and the maximum field strength without rapping.
However it is necessary to establish a method of making a water column, about 5m in length. The electro-charged water column in a dry process has been proven advantageous for specific applications.