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Keep the Salt Content and Other Control Indexes of Rotary Kiln Water within the Specified Range

Published 2020/4/15 11:42:59

As a large-scale processing equipment, rotary kiln has brought great convenience to our production work. However, in our normal use, in order to make it run longer, we need to maintain it regularly. In particular, doing a good job in sewage discharge is one part of it. Then, the following details the sewage discharge of this rotary kiln equipment. Let’s have a look.
1. Regular blowdown
After years of development, the rotary kiln industry has also made significant improvements in preheating design. As for the preheating knowledge of this kind of equipment, the following article will explain it in detail for you. Let’s get to know it together, which may be helpful for your operation and use.
Today’s kiln preheater configurations include piping to create a bed opening chamber in each module, thereby increasing the space of the gas’s hot zone. The main functions of near preheater are: 12 plunger polygon preheater is adjacent between modules, which can maintain independent modules online, and the wall material under the kiln body can enhance the gas passing capacity. For the calcination system of rotary kiln with a daily output of 200 tons and 700 tons, the preheating range modules of preheater design are from 5 to 10, while the polygons are from 12 to 20. The details of the two preheater components are basically the same.
In the above paper, two kinds of blowdown methods of rotary kiln are introduced, i.e. regular blowdown and continuous blowdown. Each method has different adaptive conditions. Therefore, when we choose the blowdown method, we should also look at it according to our own actual situation, so as to achieve better effect and promote the better work of kiln equipment.
The main function of continuous blowdown is to discharge the soluble salt from the boiler water, so as to keep the salt content and other control indexes of the rotary kiln water within the specified range. Therefore, continuous blowdown should be carried out from the parts with high salt concentration. Continuous blowdown can also discharge some fine-grained water slag, but the lower part of coarse-grained water slag deposition should be discharged through regular blowdown.
2. Continuous blowdown
Regular blowdown is mainly carried out for the lower part of the rotary kiln. The amount of regular blowdown mainly depends on the quality of water supply. It is generally carried out every 24 hours. However, if the water supply of the equipment is clean condensed water, the interval of regular blowdown can be greatly extended when the chemical demineralised water or a small amount of softened water are used for make-up water. At the same time, there must be a time interval for regular blowdown. How to control this interval and do a good job in regular control. In fact, the specific interval time and operation duration of regular blowdown of kiln are determined by the workshop according to the quality of boiler water.
Based on the content explained in this paper, you can generally understand the preheating mode of rotary kiln in production. You should pay more attention to this problem in later operation and use. In your own practice, you can further master your own operation according to this knowledge.


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