High voltage electrostatic precipitator

The CJHA/B series high-voltage electrostatic precipitator is an equipment that uses the principle of high-voltage electrostatic purification to purify dusty gases. It is a dust removal equipment specifically designed for rotary dryers in cement plants.

The CJHA/B series high-voltage electrostatic precipitator is the third-generation product with significant improvements and improvements in structure and performance. The CJHA and CJHB dryers have improved high-voltage electrostatic precipitators, which not only have high discharge performance (high operating voltage, high corona current), continuous corona lines, no dust accumulation, good vibration and dust cleaning effect, uniform airflow distribution, good insulation during hot air cleaning, and the advantages of dust accumulation and crawling faults, but also include measures to prevent secondary dust and solve high-voltage incoming line crawling. Especially for the CJMB model, the product is equipped with an insulation layer, which keeps it neat and beautiful, solving the problem of users laying the insulation layer again.

The CJHA/B series high-voltage electrostatic precipitator uses a high-voltage electric field to ionize the flue gas, and the dust in the airflow is charged and separated from the airflow under the action of the electric field. Negative is made of metal wires with different cross-sectional shapes, called discharge electricity. It is made of metal plates with different geometric shapes and is called a dust collector. The performance of electrostatic precipitators is influenced by three factors: dust properties, equipment construction, and flue gas flow rate. The specific resistance of dust is an indicator for evaluating conductivity, which has a direct impact on dust removal efficiency. The specific resistance is too low, making it difficult for dust particles to stay on the dust collector, causing them to return to the airflow. If the specific resistance is too high, the dust particles that reach the dust collector are not easily discharged, and a voltage gradient is formed between the dust layers, which will cause local breakdown and discharge phenomena. These situations will all lead to a decrease in dust removal efficiency.

The characteristics of CJHA/B series high-voltage electrostatic precipitators:

1. The optimized structural design fully considers the inertia force, centrifugal force, and electrostatic force of dust in the structure design of the dust collector. The impact of factors such as secondary dust, waveform performance, and working characteristics of the power supply has been improved by adopting an optimized structural form to increase migration speed and thus improve dust removal efficiency. When dealing with the same dust source, the dust collection area can be significantly reduced, that is, the size and consumption of the dust collector are reduced. This small space, low cost, and design provide very favorable conditions for the renovation of old dust removal equipment.

2. The power supply for dust removal is designed differently from conventional ones. He uses a stable DC power supply with soft characteristics. Stable DC voltage is superior to pulsating DC voltage. In terms of design, the entire process of power supply should be controlled below the spark initiation point in the corona discharge state. Do not let it enter the spark discharge state. Spark discharge is essentially a phenomenon in which positive and negative ions collide and release in an electric field, and it has no effect on dust removal. The conventional electrostatic precipitator includes spark discharge and corona discharge throughout the entire power supply process, and the vast majority of energy is wasted due to spark discharge. However, when dealing with the same dust source, the energy consumption of the electric field in this technology is less than that of conventional electrostatic precipitators.