ESP-to-Bag Upgrade Insights: How Electrostatic-Bag Composite Dust Collectors Combine ESP and Bag Filtration

ESP-to-bag dust collector conversion

• Electrostatic-bag composite dust collector upgrade and renovation

Electrostatic-bag composite dust collector: structure and working principle

This equipment organically combines electrostatic precipitation and bag filtration. Pre-dust collection and charging take place in the front * electric field, while filtration and dust removal are handled by the rear * filter bag zone, making it a

composite dust collector that lets the electrostatic precipitator and bag filter each play to their strengths. Their combination also creates new performance benefits and offsets the dust removal shortcomings of both technologies.

Better ash cleaning: ash cleaning quality in the dust collection system directly affects collection efficiency. After running for a period, most electrostatic collectors suffer from lower efficiency, mainly because ash cleaning on the collecting plates is poor.

The HHD electrostatic precipitator applies impact theory and practical results. It changes the traditional flat-steel impact rod structure into an integral steel structure and simplifies the side rapping hammer structure, reducing hammer-drop links by 2/3. Tests show that the collecting plate surface acceleration increases from 220G to 356G.

ESP-to-bag dust collector conversion

• Electrostatic-bag composite dust collector upgrade and renovation

Smaller footprint and lighter weight: the discharge system adopts a top rapping design and, breaking with convention, creatively uses asymmetric suspension for each electric field. With shell computer software from the American Environmental Equipment Company used for optimized design, the overall length of the electrostatic precipitator is reduced under the same total dust collection area by

3-5 meters, and weight is reduced by 15.

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

PTC and PTS materials. The bottom of the insulating bushing uses a hyperbolic reverse-blow cleaning design. This eliminates the common failure of porcelain bushing condensation and creepage and makes maintenance, servicing, and replacement more convenient.

Typically, the dust collection efficiency of one electric field is between

80 and 90. The remaining 10-20 fine dust moves with flue gas through the perforated plates at the electric field outlet and bag inlet for flow equalization. Part of the flue gas enters the bag filter horizontally; another part turns from horizontal flow to the lower part of the filter bags, then moves from bottom to top and enters the bag dust collector. This simultaneous horizontal and vertical entry of flue gas into the bag dust collection zone helps * guarantee a reasonable rising speed in the bag area. Dust-laden flue gas passes over the outer surface of the bags, dust is retained outside the filter bags, and 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. Here, the pre-dust removal and charging effects of the dust removal electric field play an important role in improving the performance of the electrostatic-bag composite dust collector.

ESP-to-bag dust collector conversion

• Electrostatic-bag composite dust collector upgrade and renovation

Technical features of the electrostatic-bag composite dust collector;

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

static-bag composite dust collector, 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 in 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. As dust is ionized and charged in the electrostatic dust removal zone, charging improves the filtration characteristics of dust on the filter bags, meaning the air permeability and ash cleaning performance of the 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 created by combining them, can fully overcome the dust removal shortcomings of electrostatic precipitation and bag filtration. According to our company's experimental research and industrial application in power boiler flue dust, this technology has proven to be scientific, reliable, and advanced.

) * 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. 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 factory described in the source has product variety and quality at the advanced level of the same industry in China, and its products are widely used by large and medium-sized domestic enterprises. To meet different users' needs, the 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 earning high praise from users.

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