Gas Cleaning Plant for Blast Furnace Gas

Q: What is the typical gas flow rate range for a gas cleaning plant?

The typical gas flow rate range is 50,000 to 200,000 Nm³/h, but this depends on the specific blast furnace and plant configuration. Always confirm with the manufacturer for your application.

Q: What standards are referenced for operating pressure and power supply?

Operating pressure is referenced to, and power supply to IEC 60038. These standards are for verification and procurement reference; they do not imply certification of a specific product.

Q: What materials are commonly used in the construction?

Carbon steel (e.g., Q235B) is used for structural parts, stainless steel (e.g., 304) for corrosive zones, and refractory linings for high-temperature areas. Material grades are per GB/T 700 and GB/T 3280.

Q: How does the plant achieve high dust removal efficiency?

The plant uses a combination of cyclones for coarse dust and wet scrubbers or electrostatic precipitators for fine particles. Typical efficiency for particles <10 µm is 99.5–99.9%, but this must be verified for the specific design.

Product Specifications

Technical details and manufacturing context for Gas Cleaning Plant

Definition

The Gas Cleaning Plant is a component within the Integrated Blast Furnace and Basic Oxygen Furnace Steelmaking System. Its function is to clean and condition the hot, dust-laden gas produced by the blast furnace. The plant removes particulate matter (dust), cools the gas, and may adjust its composition to make it suitable for reuse as fuel in other plant processes (e.g., heating stoves, power generation) or for safe release, thereby recovering energy and reducing emissions. The system typically handles gas flow rates ranging from 50,000 to 200,000 Nm³/h, with operating pressures between 1.0 and 1.6 MPa and inlet gas temperatures from 150 to 250 °C. Dust removal efficiency for particulate matter smaller than 10 µm is typically 99.5–99.9%, resulting in outlet dust concentrations of ≤10 mg/Nm³. The pressure drop across the entire cleaning system is 2–5 kPa. For wet scrubbing systems, water consumption is 0.5–1.5 m³ per 1000 Nm³ of gas. Electrical power for fans, pumps, and controls ranges from 100 to 500 kW, with a three-phase 380 V AC (±10%) supply per IEC 60038. Materials used include carbon steel for structural parts, stainless steel (e.g., grade 304) for corrosive zones, and refractory linings where high temperatures are encountered. Material grades referenced are Q235B and 304, per GB/T 700 and GB/T 3280. The plant's weight ranges from 50 to 200 tonnes, and its footprint, including auxiliary equipment, is 200 to 1000 m². These values are typical reference ranges and must be confirmed for the specific model and application with the legal manufacturer or supplier. The Gas Cleaning Plant is essential for meeting environmental regulations and improving overall plant efficiency.

Working Principle

Hot, raw blast furnace gas is first cooled, typically in a spray cooler or waste heat boiler. The cooled gas then passes through a series of cleaning stages, which may include cyclones for coarse dust removal, followed by wet scrubbers (e.g., venturi scrubbers) or electrostatic precipitators (ESPs) for fine particulate removal. The cleaned gas is then often dehydrated and its pressure boosted before being sent to the plant gas network.

Common Materials

Carbon steel, Refractory linings, Stainless steel (for corrosive zones)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Gas Flow Rate	50000–200000 Nm³/h	Typical range for blast furnace gas cleaning
Operating Temperature	150–250 °C	Inlet gas temperature range
Dust Removal Efficiency	99.5–99.9 %	For particulate matter <10 µm
Outlet Dust Concentration	≤10 mg/Nm³	Complies with environmental regulations
Pressure Drop	2–5 kPa	Across the entire cleaning system
Water Consumption	0.5–1.5 m³/1000 Nm³	For wet scrubbing systems
Electrical Power	100–500 kW	For fans, pumps, and controls
Power Supply	380 ±10% V AC	Three-phase, 50 HzIEC 60038
Material Grade	Q235B/304	Carbon steel for structure, stainless for internalsGB/T 700, GB/T 3280
Weight	50–200 t	Depends on capacity and configuration
Footprint	200–1000 m²	Including auxiliary equipment

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Gas Cooler
Reduces the temperature of the hot raw gas, often recovering waste heat.

Material: Carbon steel with refractory lining
Cyclone Separator
Removes coarse dust particles from the gas stream using centrifugal force.

Material: Carbon steel
Venturi Scrubber
A wet scrubbing unit that uses high-velocity gas to atomize water, capturing fine dust via impaction.

Material: Carbon steel / Stainless steel
Demister/Mist Eliminator
Removes entrained water droplets from the gas after wet scrubbing.

Material: Polypropylene / Stainless steel
Electrostatic Precipitator Optional
Alternative fine-dust stage to the wet scrubber, using charged plates.
Gas Booster Optional
Raises the cleaned gas pressure to what the plant gas network needs.

Manufacturers of Gas Cleaning Plant

Manufacturer profiles associated with Gas Cleaning Plant.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 16 September 2026

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Frequently Asked Questions

What is the typical gas flow rate range for a gas cleaning plant?

The typical gas flow rate range is 50,000 to 200,000 Nm³/h, but this depends on the specific blast furnace and plant configuration. Always confirm with the manufacturer for your application.

What standards are referenced for operating pressure and power supply?

Operating pressure is referenced to, and power supply to IEC 60038. These standards are for verification and procurement reference; they do not imply certification of a specific product.

What materials are commonly used in the construction?

Carbon steel (e.g., Q235B) is used for structural parts, stainless steel (e.g., 304) for corrosive zones, and refractory linings for high-temperature areas. Material grades are per GB/T 700 and GB/T 3280.

How does the plant achieve high dust removal efficiency?

The plant uses a combination of cyclones for coarse dust and wet scrubbers or electrostatic precipitators for fine particles. Typical efficiency for particles <10 µm is 99.5–99.9%, but this must be verified for the specific design.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 10 bar (maximum design pressure)
flow rate:	50,000-500,000 Nm³/h (standard volumetric flow)
temperature:	50-400°C (typical operating range)
slurry concentration:	Up to 30% solids by weight (for wet scrubbing systems)

Gas Cleaning Plant

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards