Dust Collector Conversion from Electrostatic to Bag Type - Upgrading and Renovation of Electrostatic-Bag Composite Dust Collectors

Electrostatic-to-bag dust collector

• Upgrading and renovation of electrostatic-bag composite dust collectors

Introduction to the structural principle of the electrostatic-bag composite dust collector:

The electrostatic-bag composite dust collector organically combines the characteristics of electrostatic dust removal and bag dust removal. It is a

type of dust collector that uses the pre-dust collection and charging effect of the front * electric field and the filtration and dust removal of the rear * filter bag zone. It gives full play to the respective dust removal advantages of the electrostatic precipitator and the bag filter, as well as the new performance advantages produced by combining the two, and makes up for the dust removal shortcomings of the electrostatic precipitator and the bag filter.

Improving the ash cleaning effect: whether the ash cleaning of the dust collection system is good or bad directly affects the dust collection efficiency. After a period of operation, most electrostatic precipitators show a decline in efficiency, and the root cause is poor ash cleaning of the collecting plates.

Based on impact theory and practical results, the HHD electrostatic precipitator changed the traditional flat steel impact rod structure into an integral steel structure, and simplified the side rapping hammer structure of the dust collection, reducing the hammer-dropping links by 2/3. Experiments show that the acceleration of the collecting plate surface increased from 220G to 356G.

Electrostatic-to-bag dust collector

• Upgrading and renovation of electrostatic-bag composite dust collectors

Small footprint and light weight: because the discharge system adopts a top rapping design, and because, breaking with convention, each electric field is creatively designed with an asymmetric suspension, and the shell computer software of the American Environmental Equipment Company is used for optimal design, the overall length of the electrostatic precipitator is reduced by

3-5 meters and the weight is reduced by 15 under the same total dust collection area.

Highly * guaranteed insulation system: to prevent condensation and creepage of the high-voltage insulating materials of the electrostatic precipitator, the shell adopts a heat-storage double-layer inflatable roof design, the electric heating uses

PTC and PTS materials, and the bottom of the insulating bushing adopts a hyperbolic reverse-blow cleaning design, eliminating the easy-to-occur failure of condensation and creepage of the porcelain bushing, and making maintenance, servicing and replacement more convenient.

Usually the dust collection efficiency of one electric field is between

80 and 90, and the remaining 10-20 of fine dust, after being equalized by the perforated plate at the electric field outlet and the bag inlet along with the flue gas, partly enters the bag filter horizontally and partly turns from horizontal flow to the lower part of the filter bags, then moves from bottom to top and enters the bag dust collector. The advantage of this simultaneous horizontal and vertical entry of flue gas into the bag dust collection zone is that it * guarantees a reasonable rising speed in the bag zone. The dust-laden flue gas passes through the outer surface of the bags, the dust is retained on the outside of the filter bags, and the clean gas flows out from the inner cavity of the bags, enters the upper purification chamber, then merges into the exhaust duct and is discharged from the chimney through the outlet bell mouth, pipeline and fan. Among these, the pre-dust removal effect and the charging effect of the dust removal electric field play an important role in improving the performance of the electrostatic-bag composite dust collector.

Electrostatic-to-bag dust collector

• Upgrading and renovation of electrostatic-bag composite dust collectors

Technical features of the electrostatic-bag composite dust collector;

) The dust removal mechanism integrates the advantages of two dust removal methods. Because in the electro

static-bag composite dust collector the flue gas first passes through the electrostatic dust removal zone and then slowly enters the rear * bag dust removal zone, the amount of dust captured by the bag dust removal zone is only that at the inlet

. In this way the dust load on the filter bags is greatly reduced and the ash cleaning cycle can be greatly extended; the dust is ionized and charged as it passes through the electrostatic dust removal zone, and the charging of the dust improves the filtration characteristics of the dust on the filter bags, that is, the air permeability and ash cleaning performance of the filter bags are greatly improved. Rationally applying the respective dust removal advantages of the electrostatic precipitator and the bag filter, as well as the new functions produced by combining the two, can fully overcome the dust removal shortcomings of electrostatic dust removal and bag dust removal. According to our company's experimental research and industrial application in power boiler flue dust, this technology has proven to be a scientific, reliable and advanced technology. (

) * Guaranteed long-term stable operation. The dust removal efficiency of the electrostatic-bag composite dust collector is not affected by coal type, flue gas characteristics or fly ash resistivity, and it can maintain stable and reliable operation over the long term, * guaranteeing an emission concentration below

50mg/Nm3

*Yang Environmental Protection consulting and ordering hotline

The variety and quality of our factory's products are at the advanced level of the same industry in China, and they are widely used by large and medium-sized domestic enterprises. In response to the needs of different users, our factory designs and formulates various treatment processes with low investment, low operating costs, stable operation and convenient operation, ensuring that each treatment project meets emission standards, and has won high praise from users

——This article is reprinted from China Packaging Network (pack.cn), original link: http://news.pack.cn/show-355420.html