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The salt content and other control indexes of rotary kiln water can be maintained within the specified range

Author: admin Release time: December 19, 2019 11:17 Number of visits:

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Rotary kiln as a large-scale processing equipment, to our production work has brought great convenience, but in our usual use, in order to make it more long-term operation, we need to carry out regular maintenance and maintenance. In particular, to do a good job in sewage discharge is one of them, so the following is a specific introduction to this Rotary kiln Let's have a look at the sewage of the equipment.

1. Regular sewage discharge

After years of development of rotary kiln industry, the preheating design has also been greatly improved. About this kind of equipment preheating knowledge, the following article for you to explain in detail, you come to understand it, may be helpful to your operation and use.

Today's kiln preheater configuration includes piping, creating bed open cavities in each module, thereby increasing the space of the gas's hot zone. The main functions of the near preheater are as follows: 12 plunger polygonal preheater is adjacent to each other, can maintain independent modules online, and the wall material under the kiln body can enhance the gas passing capacity. For the rotary kiln calcination system with a daily output of 200 tons and 700 tons, the number of preheater modules in the preheater design ranges from 5 to 10, while the polygon ranges from 12 to 20. The detailed design of these two preheater components is basically the same.

In the above paper, two kinds of blowdown methods of rotary kiln are introduced, which are periodic blowdown and continuous blowdown. The adaptation conditions of each mode are different. Therefore, when we select the blowdown mode, we should also consider 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 drain the soluble salt in the boiler water to keep the salt content and other control indexes in the specified range. Therefore, continuous blowdown should be carried out from the parts with higher salt concentration. Continuous blowdown can also discharge some fine-grained water slag, but the lower part of coarse-grained slag deposition must be discharged through regular blowdown.

2. Continuous blowdown

The regular blowdown is mainly carried out at the lower part of the rotary kiln. The amount of the regular blowdown mainly depends on the quality of the water supply. Generally, it is carried out once every 24 hours. However, if the feed water of the equipment is clean condensate, and the make-up water uses chemical desalted water or a small amount of softened water, the interval of regular sewage discharge can be greatly extended. At the same time, there must be a time interval for regular sewage discharge. How to control this interval and do a good job in regular operation. In fact, the specific interval time and operation duration of regular sewage discharge are determined by the workshop according to the quality of boiler water.

Based on the contents explained in this paper, we can generally understand the preheating method of rotary kiln in production. We should pay more attention to this problem in future operation and use. In our own practice, we can further master our own operation according to this knowledge.

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