Other
Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof: > Filtering or purifying machinery and apparatus for gases: > Other > Other: > Industrial gas cleaning equipment: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8421.39.01.30
Electrostatic Precipitator for Industrial Exhaust
An electrostatic precipitator uses high-voltage electric fields to remove fine particles and dust from industrial gas streams in manufacturing plants. It falls under HTS 8421.39.0130 as industrial gas cleaning equipment for purifying exhaust gases by capturing particulate matter. This apparatus is essential for compliance with emission standards in heavy industries.
Baghouse Dust Collector for Cement Plants
A baghouse dust collector uses fabric filter bags to capture dust and particulate from cement production exhaust gases, preventing atmospheric pollution. Classified under HTS 8421.39.0130 as other industrial gas cleaning equipment for high-volume gas streams. It features pulse-jet cleaning for continuous operation in harsh environments.
Wet Scrubber for Chemical Plant Gas Emissions
A wet scrubber removes harmful gases and particulates from chemical plant flue gases by contacting them with liquid sprays, often using packed towers or venturi designs. It qualifies for HTS 8421.39.0130 as industrial gas cleaning equipment handling corrosive and toxic streams. This system neutralizes pollutants like SO2 and HCl before atmospheric release.
Cyclone Separator for Power Plant Flue Gas
A high-efficiency cyclone separator uses centrifugal force to remove ash and coarse particles from coal-fired power plant flue gases before further treatment. It is categorized under HTS 8421.39.0130 for other industrial gas cleaning equipment in utility applications. Multiple cyclones often operate in parallel for large-scale gas volumes.
Activated Carbon Adsorber for VOC Removal
An activated carbon adsorber vessel captures volatile organic compounds (VOCs) from paint shop exhaust gases using granular carbon beds with regeneration capabilities. Falls under HTS 8421.39.0130 as industrial gas cleaning equipment for solvent recovery in manufacturing. It supports multiple adsorption cycles for cost efficiency.
Fabric Filter Cartridge System for Metal Foundry
A cartridge-based fabric filter system collects metal fumes and fine dust from foundry melting furnace off-gases using pleated polyester cartridges. Classified in HTS 8421.39.0130 for other industrial gas cleaning in metallurgy applications. Automatic pneumatic cleaning extends filter life in dusty environments.
Thermal Oxidizer Afterburner for Paint Oven Exhaust
A thermal oxidizer destroys VOCs and hazardous air pollutants in paint curing oven exhaust by high-temperature combustion (typically 1400°F+). It meets HTS 8421.39.0130 as other industrial gas cleaning equipment with heat recovery options. Integral burner and catalyst options available for efficiency.
Multi-Cyclone Dust Collector for Woodworking Facility
A multi-cyclone array removes fine wood dust and chips from woodworking machinery exhaust, preventing combustible dust explosions. Under HTS 8421.39.0130 for other industrial gas cleaning in fabrication shops. High-efficiency separation returns clean air to workspace.
Regenerative Thermal Oxidizer for Petrochemical Plant
A regenerative thermal oxidizer (RTO) uses ceramic heat exchange media to destroy petrochemical process vent VOCs with >99% efficiency and low fuel use. Fits HTS 8421.39.0130 as advanced industrial gas cleaning equipment. Three-chamber design enables continuous operation.
High-Temperature Fabric Filter for Incinerator Flue Gas
A high-temperature fabric filter (up to 500°F) captures fly ash from waste incinerator flue gases using PTFE membrane bags. Classified under HTS 8421.39.0130 for other industrial gas cleaning in waste-to-energy plants. Pulse-jet cleaning maintains differential pressure.
Venturi Wet Scrubber for Steel Mill Pickling Line
A venturi wet scrubber quenches and removes acid mists from steel pickling line HCl fumes using high-velocity water atomization. Meets HTS 8421.39.0130 criteria for other industrial gas cleaning in metal processing. Demister pads recover entrained droplets.
Pulse Jet Baghouse for Asphalt Plant
A pulse jet baghouse filters particulate from asphalt drum mixer stack gases using Dacron bags with sequential cleaning. Under HTS 8421.39.0130 as other industrial gas cleaning equipment for road construction. Handles high-moisture blue smoke effectively.
Electrostatic Dust Precipitator for Glass Furnace
An electrostatic dust precipitator removes soda ash and silica fines from glass furnace regenerators using wet/dry ESP technology. Classifies in HTS 8421.39.0130 for other industrial gas cleaning in glass manufacturing. Rapping systems dislodge collected hoppers.
Packed Tower Absorber for Ammonia Plant
A packed tower absorber removes unreacted ammonia from syngas streams in fertilizer production using circulating phosphate solution. Fits HTS 8421.39.0130 as other industrial gas cleaning apparatus. Random packing maximizes gas-liquid contact.
Cartridge Filter Unit for Plasma Cutting Fume Extraction
A down-draft cartridge filter unit captures metal oxide fumes from CNC plasma cutting tables using nanofiber cartridges. Under HTS 42.39.0130 for other industrial gas cleaning in metal fabrication shops. Self-cleaning via compressed air pulses.