Selection method of water curtain dust collector for organic fertilizer equipment

Environmentally friendly organic fertilizer equipment is inseparable from dust collectors, and water curtain dust collectors are an important type. The water curtain dust collector can separate the dust from the air. The performance of the dust collector is expressed by the amount of gas that can be processed, the resistance loss when the gas passes through the dust collector, and the dust removal efficiency. At the same time, the price of the dust collector, operation and maintenance costs, the length of the service life and the ease of operation and management are also important factors to consider its performance. Water curtain dust collector is an integral part of environmentally friendly organic fertilizer equipment.

Selection method of water curtain dust collector for environmentally friendly organic fertilizer equipment:

Environmental protection organic fertilizer equipment water curtain type dust collector: including an inner body, the outer body is connected to the outside of the inner body, the lower end of the inner body and the lower end of the outer body form a water outlet gap, and the outer body has a water inlet near the upper end, which passes through the inner body and the outer body. Relative position to adjust the size of the water outlet gap, close to control the thickness of the water curtain, add a certain pressure of water from the water inlet, the water sprays from the water outlet gap through the cavity between the inner body and the outer body, in a certain range of the cutting head An annular water curtain is formed inside, and the water curtain absorbs a large amount of smoke and dust, thereby achieving the purpose of dust removal. The utility model has a simple structure, is convenient to use, reduces pollution, improves the working environment, and has obvious effects.

1.Handling air volume. The unit is cubic meters per hour (m3/h) or standard cubic meters per hour (Nm3/h). It is a factor in the design of the bag filter.

When designing or selecting a bag filter according to the air volume, it is generally impossible to make the filter run under the condition of exceeding the specified air volume. Otherwise, the filter bag is easy to be blocked, the life is shortened, the pressure loss is greatly increased, and the dust removal efficiency is also reduced; but it cannot The air volume is selected too large, otherwise the equipment investment and floor space will be increased, resources will be wasted, and no energy will be saved. The reasonable choice of air volume is often determined based on process conditions and experience.

2.Use temperature

For the water curtain type dust collector, the operating temperature depends on two factors, one is the high temperature of the filter material, and the other is that the gas temperature must reach above the dew point temperature.

For the water curtain type dust collector, the relationship between the operating temperature and the dust removal efficiency is not obvious. This is different from the electric dust removal. For the electric dust collector, the temperature change will affect the specific resistance of the dust and affect the dust removal efficiency.

3.Dust concentration at the entrance. That is, the inlet dust concentration, which is determined by the process of the dust-raising point, is an important factor second only to the air volume when designing or selecting a water curtain dust collector.

Environmentally friendly organic fertilizer equipment-water curtain dust collector

Expressed in g/m3 or g/Nm3. For the water curtain dust collector, the dust concentration at the inlet will directly affect the following factors: pressure loss and ash cleaning cycle. As the inlet concentration increases, soot accumulates faster on the same filter area, and the pressure loss increases accordingly. As a result, the number of ash cleaning has to be increased. Lead to wear of the filter bag and box body.

In the case of dust with strong abrasiveness, the amount of wear can be considered to be proportional to the dust concentration. Is pre-collection of dust necessary. Pre-dust collection is to add another level of dust removal equipment before the entrance of the dust collector, also known as pre-dust removal. The ash discharge capacity of the ash discharge device can discharge all the collected dust, and the dust volume is equal to the inlet dust concentration multiplied by the processing air volume.

Operation method. The bag filter is divided into two operation modes: positive pressure and negative pressure. In order to reduce the wear of the fan, the positive pressure operation mode is not suitable for the large inlet concentration.