Matters needing attention and skills of waste gas emission from chemical sludge drying equipment

It is one of the effective methods to reduce sludge volume and reduce sludge volume to dispose chemical sludge with high wet viscosity by chemical sludge drying equipment. However, in the drying process of chemical sludge drying equipment, the moisture in the materials is discharged with the waste gas, which contains a large number of toxic and harmful substances. If not properly treated, it will not only threaten the surrounding environment, but also affect the service life of the chemical sludge drying equipment. Generally, chemical sludge drying production line is equipped with dust removal equipment, which is used to deal with the exhaust gas discharged from the dryer. The common dust removal equipment includes cyclone dust collector, bag filter, desulfurization scrubber, etc. different equipment is suitable for different use scenarios, which can not only be used by single equipment, but also be designed for combined use. So what are the precautions and skills of waste gas emission of chemical sludge drying equipment?

When choosing chemical sludge drying equipment, users prefer the equipment with large production capacity, short drying time, less heat loss and low operation cost. In general, this kind of equipment can meet the demand of production and water content by increasing the air volume, increasing the size and improving the configuration. For example, most drum sludge dryers we see in the dryer Market belong to this type of equipment. However, the output of the equipment has increased, and waste gas treatment is indeed a problem.

The waste gas produced by the sludge dryer in the production process has the characteristics of high dust concentration and large particles. If the equipment operates under negative pressure and the air volume is large, the dust concentration in the waste gas is naturally high. Especially in the case of large material output and direct heating drying, when the moisture content of the material is reduced to a certain point, the dust concentration in the waste heat will increase, and the particles will also increase. The direct contact between the hot air and the material will not only make the material easy to be polluted, but also take away a lot of dust particles, resulting in the difficulty of dust collection, the heavy load of waste gas treatment and the drying machine and dust removal equipment Wear. So, is there any solution to the problem of waste gas treatment? In fact, users can pay attention to the following precautions and skills in waste gas treatment.

1. Avoid using coal as fuel for heating

Because coal combustion will produce a large number of toxic and harmful substances, high sulfur content, acid corrosion, and serious environmental pollution, increasing the operation burden of waste gas treatment equipment, so coal should be avoided as far as possible.

2. Multistage dust removal technology

Multi stage dust removal and purification equipment is used to collect the waste gas from the chemical sludge drying equipment and then to conduct centralized purification treatment. The toxic, harmful and odorous waste gas is decomposed into H2O, CO2 and other stable inorganic substances, and then discharged into the atmosphere after reaching the emission standard.