Gas separation: apparatus – Electric field separation apparatus – With control means responsive to sensed condition
Reexamination Certificate
2000-07-19
2001-07-03
Chiesa, Richard L. (Department: 1724)
Gas separation: apparatus
Electric field separation apparatus
With control means responsive to sensed condition
C096S025000, C096S043000, C096S044000, C096S050000, C096S055000, C096S058000, C096S064000
Reexamination Certificate
active
06254668
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a device for cleaning static precipitator, in which hot air and steam are used to heat and melt the oil dirt attaching to the static panels, making the oil dirt drop down into a collecting section. Accordingly, the static panels are effectively and harmlessly cleaned up.
In a conventional static precipitator, the oil drops passing through the space between the static panels are ionized by way of high voltage discharging. The ionized oil drops are attracted to attach to the static panels. After a period of use, excess oil drop will accumulate on the surface of the static panels. This will deteriorate the attractive force of the static panels and may lead to short circuit of the static panels or even cause sparks.
Conventionally, the oil dirt accumulating on the static precipitator is cleared in such a manner that the static panels are detached and immerged in a detergent. Alternatively, a detergent is sprayed onto the static panels which are then washed and flushed by clean water. After being totally dried, the static panels are installed back into the oil-collecting sink of the static precipitator. Such cleaning procedure is quite troublesome and time-consuming and much waste water will be produced, which is difficult to process. An improved measure has been developed, which employs a sprinkler in the oil-collecting sink to directly sprinkle a detergent and water onto the static panels and wash the same. Accordingly, it is no more necessary to detach the static panels and much labor and time are saved. However, still a great amount of waste water is produced. Moreover, it will be more difficult and time-consuming to dry the static panels in the oil-collecting sink.
Another improved measure has been developed to remove the oil dirt in such a manner that the static panels are circularly moved and in the moving path, a scraper is used to scrape off the oil dirt. In such measure, the static panels tend to deflect during moving. In addition, the static panels are subject to scraping of the scraper for a long time and are likely to damage. Also, such measure has complicated structure.
Furthermore, when maintained, the conventional devices must be stopped from operating and it often takes much time to complete the maintenance. Therefore, the operation of the static precipitator is often interrupted for a long time.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide a device for cleaning static precipitator in which hot air is filled into the oil-collecting sink through a hot air filling pipe for heating and melting the oil dirt attaching to the static panels, making the oil dirt drop down into a collecting section so as to clean up the static panels.
It is a further object of the present invention to provide the above device, in which steam is further filled into the oil-collecting sink through a steam filling pipe to further clean up the oil dirt remaining on the static panels.
It is still a further object of the present invention to provide the above device, in which sealing devices are disposed near two ends of the oil-collecting sink for sealing the air inlet and air outlet of the oil-collecting sink during heating procedure so as to maintain a high temperature therein.
It is still a further object of the present invention to provide the above device, in which the inner side of the front end of the oil-collecting sink is disposed with a flow-guiding filtering screen near the air inlet. The filtering screen serves to filter the coarse pollutant particles entrained by the air. The filtering screen also serves to make the air evenly flow through the static panels to enhance the oil-cleaning effect. An activated carbon filter device is installed in the rear end of the oil-collecting sink. The air flow which is free from the oil drops can further pass through the activated carbon filter device to be filtered from the odor and gas pollutant and then exhausted so as to ensure the quality of the exhausted air.
It is still a further object of the present invention to provide the above device, in which a fire device is mounted outside the oil-collecting sink. A thermosensor of the fire device serves to detect the temperature and in the case of abnormal temperature, the thermosensor is able to activate the fire device and the sealing device at the same time to isolate the air and inject a fire-extinguishing material into the oil-collecting sink to extinguish the fire. The sealing device can be a movable door. During the cleaning operation or maintenance of the static precipitator, the movable door is turned to close the air passage of the static precipitator. At this time, the air is guided and exhausted by a bypass. Therefore, the static precipitator can continuously exhaust the oil drop at the same time when maintaining the internal equipments in the oil-collecting sink without interruption of the operation of the static precipitator.
The present invention can be best understood through the following description and accompanying drawings, wherein:
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Chiesa Richard L.
Dougherty & Troxell
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