Henan Guoqing Environmental Protection Technology Co., Ltd
What is a baghouse?
Release time：
2023-11-01
Author：
A baghouse, also known as a filter‑type dust collector, is often referred to as a bag filter because its filtering media are typically configured in the form of fabric bags. This type of dust collector employs woven or nonwoven filter fabrics to capture particulate matter from gas streams, making it a widely used dry‑type dust‑removal device.
A baghouse, also known as a filter‑type dust collector, is so named because its filter media are typically configured in the form of fabric bags. This type of dust collector is a purification device that uses organic or inorganic fibrous filter fabrics to capture particulate matter from gas streams, and it is a widely used dry‑type dust‑removal system.
In the 1780s, Germany was the first to commercialize baghouse dust collectors. In 1954, scientist H. V. Hershey developed reverse-air pulse-jet cleaning technology, and in 1957, scientist T. W. Reinauer introduced pulse‑jet baghouse technology, marking a major breakthrough in baghouse filtration. By the 1970s, baghouse systems had increasingly moved toward larger-scale designs. In the early 1950s, China primarily relied on various types of wet‑type dust collectors; later, influenced by foreign baghouse equipment, the industry gradually shifted to mechanical shaking and reverse‑air cleaning methods. In the 1960s, China independently developed ring‑air reverse‑blow baghouses and pulse‑jet collectors for copper smelting flue gases, thereby ushering in the initial stage of baghouse technology in the country.
Baghouse dust collectors consist primarily of a frame, a housing, filter bags, and a cleaning system, and can be classified into different types based on bag configuration, filtration direction, inlet location, operating pressure within the collector, and cleaning method. 16 Baghouse dust collectors achieve dust removal through physical principles such as gravity, inertial impaction, adsorption, and electrostatic attraction. The process comprises two stages: the filtration stage and the cleaning stage.
Baghouse dust collectors are widely used in numerous industrial sectors, including steel, nonferrous metallurgy, chemical processing, machinery, building materials, and transportation, and have become a mainstream dust‑removal technology worldwide. However, baghouse systems also have several inherent limitations: they impose stringent requirements on temperature, flue‑gas moisture, and gas composition; they exhibit relatively high pressure drops; and they suffer from drawbacks such as bulky dimensions, substantial steel consumption, and elevated operating costs. Consequently, as environmental regulations continue to tighten, these systems will need to further enhance their purification performance—for example,
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