CN100395500C - Drying process of rubber additives - Google Patents

Abstract

The invention discloses a drying process for rubber additives. It solves the problems of low material drying rate and insufficient material drying in the current drying process of rubber additives, and has the advantages of good drying effect, high thermal efficiency, small product particle size, and low investment. The process is as follows: feeding, drying with flash dryer plus airflow dryer, exhausting after dust removal and collection, the characteristics are: the wet material is sent into the flash dryer through the feeder, and the flash dryer breaks up the material , drying, and then the semi-dry material is dried twice in the air flow, and the dried material is sent to the bag filter for dust collection, and the tail gas is emptied.

Description

Drying process of rubber additives

technical field

The invention relates to a drying process for rubber additives.

Background technique

The existing drying process of rubber additives is a two-stage airflow drying process, which has the disadvantages of high drying air velocity, short material residence time, poor drying effect, and easy fluctuation of product moisture content; during the drying process, rubber additives have Viscous, wet materials are easy to stick to the wall of the air flow pipe, and it is difficult to clean up after sticking to the wall. At the same time, the two-stage air flow process route is complicated, the drying air volume and pressure head are large, the power consumption is high, the energy utilization rate is low, the thermal efficiency is low, and the operating cost is high; the dust removal system is complex, the equipment occupies a large area, high investment, and many discharge points. The operation is difficult and the labor intensity of the workers is high.

Contents of the invention

The purpose of the present invention is to solve the problem of low material drying rate and insufficient material drying in the current drying process of rubber additives, and to provide a combination of a flash dryer and a flow dryer for two times of drying. This drying process has the advantages of drying Good effect, high thermal efficiency, small product size, less investment and so on.

In order to achieve the above object, the present invention adopts the following technical scheme: a drying process for rubber additives. Its process is as follows: feeding, drying in a flash dryer plus an airflow dryer, and exhausting the tail gas after dust removal and collection. Yes: the wet material is sent into the flash dryer through the feeder, the flash dryer disperses and dries the material, and then the semi-dry material is dried twice in the air flow, and the dried material is sent to the bag filter for dust collection , the exhaust gas is emptied.

The flash dryer is connected with the heated process air, and the process air is sent into the flash dryer through a pipeline after being heated by a filter and a heat exchanger.

The bag filter is connected to the fan through pipelines, and the process air after bag dust removal is exhausted by the fan.

On the basis of the existing airflow drying process, the present invention combines flash dryer drying and airflow drying process to form two times of drying, thereby fully improving the drying efficiency of materials; The crushing mechanism can not only disperse and crush large pieces of materials, but also strengthen the disturbance of airflow and wet materials, improve drying strength, and reduce equipment volume, thereby saving equipment investment. This drying process can prolong the drying residence time of the material, and the drying efficiency is high; the particle size of the dispersed material is small, more than 100 mesh, and the classification of the product can be realized by controlling the wind speed. It does not stick to the wall and does not affect the continuous operation of the equipment. The whole process Small investment, small footprint.

Description of drawings

Fig. 1 is a process flow diagram of the present invention.

Among them, 1. Filter, 2. Heat exchanger, 3. Feeding machine, 4. Flash dryer, 5. Airflow dryer, 6. Bag filter, 7. Fan.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

In Figure 1, the wet material enters the flash dryer 4 through the feeder 3, and the process air composed of air, condensed water and saturated steam is also sent to the flash dryer 4 after passing through the filter 1 and the heat exchanger 2. The flash dryer 4 breaks up the material and mixes it with high-temperature process air for drying, then the material is sent to the airflow dryer 5 for the second drying, and the dried material is sent to the bag filter 6 for dust collection, and the bag filter 6 and The fan 7 is connected, the process air after bag dust removal enters the fan 7 to be emptied, and the finished product can be sent out.

Claims (1)

1. A drying process for rubber additives. Its technological process is that exhaust gas is emptied after feeding, airflow drying, and dust collection. It is characterized in that: the flash dryer (4) is connected to the heated process air, and the process air passes through After the filter (1) and the heat exchanger (2) are heated, they are sent into the flash dryer (4) through the pipeline; the wet materials are sent into the flash dryer (4) through the feeder (3), and the flash dryer ( 4) Disperse, pulverize and dry the material, then send the material into the air dryer (5) above the flash dryer (4) for secondary drying, and send the dried material into the bag filter (6 ) dust collection, the bag filter (6) is connected with the fan (7) through the pipeline, the process air after bag dust removal is emptied by the fan (7), and the finished product is sent out.

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