Professional Hot Air Furnace Solutions
High-efficiency, Energy-saving Hot Air Furnace Equipment for Industrial Heating
Hot Air Furnace Introduction
The hot air furnace heats the blast air to the required temperature to improve the efficiency of the blast furnace; it works on the principle of "heat storage". Gas is burned in the combustion chamber, and high-temperature exhaust gas passes through the checker bricks to store heat. When the checker bricks are fully heated, the hot air furnace can switch to air supply mode, where combustion valves close and air supply valves open, allowing cold air to be heated by the checker bricks and discharged. When a blast furnace has 3-4 hot air furnaces, two or three are heating while one supplies air, alternating between them.
Product Classification
Direct High-Purification Hot Air Furnace
Uses direct fuel combustion with high purification treatment to form hot air, directly contacting materials for heating, drying, or baking. Fuel consumption is reduced by about half compared to steam or other indirect heaters.
Fuel Types:
- Solid Fuels: Coal, Coke, Biomass
- Liquid Fuels: Diesel, Heavy Oil, Alcohol-based Fuels
- Gas Fuels: Coal Gas, Natural Gas, Liquid Gas
Note: This direct heating type hot air furnace is not suitable for heating in livestock farming.
Indirect Hot Air Furnace
Suitable for materials that cannot be contaminated during drying, or for heat-sensitive materials requiring lower temperatures. Examples: Milk powder, Pharmaceuticals, Synthetic Resins, Fine Chemicals.
Working Principles:
Heat Storage Type
- By Heat Storage Body: Ball Type, Checker Brick Type
- By Combustion Method: Top Combustion, Internal Combustion, External Combustion
- Advantages: High Heat Exchange Temperature, High Thermal Efficiency
- Disadvantages: Large Volume, Large Footprint, Unstable Hot Air Temperature, High Maintenance Cost
Heat Exchange Type
- Uses High-Temperature Ceramic Heat Exchanger as Core Component
- Can Heat Fresh Air to Over 1000°C
- Advantages: Compact Size, Stable Hot Air Temperature, Long Service Life, Low Maintenance Cost
- Disadvantages: Lower Heat Exchange Temperature Than Storage Type, Not Widely Used
Product Principles
The Chain Grate Energy-saving Hot Air Furnace is a new type of high-efficiency energy-saving furnace with 5 national patents. It features energy-saving front and rear arches and a cyclone combustion chamber at the rear, ensuring complete fuel combustion with low heat loss. The principle involves coal being fed into the furnace through the grate, with fan air passing through the coal layer, fully combusting with the coal on the chain to produce high-temperature flue gas. The high-temperature flame enters the secondary combustion chamber and cyclone combustion chamber for re-combustion, resulting in flue gas blackness below "Ringelmann 1". The Chain Grate Energy-saving Hot Air Furnace provides stable heating, high automation, high efficiency, environmental protection, and reliable operation.
Product Advantages
Cost Reduction
Uses bituminous coal as fuel with flue gas blackness below "Ringelmann 1". Designed for 5000 kcal bituminous coal, saving fuel costs compared to traditional furnaces. Small installed capacity with power consumption within 5KW-15KW, resulting in low operating costs.
Stable Heating
Automatic coal feeding and grate transmission ensure uniform coal supply. Temperature adjustment is simple through damper control, providing stable heat output, crucial for stable compound fertilizer production.
Moisture and Caking Control
Large heating area and sufficient hot air volume significantly reduce temperature differences, making it easy to control compound fertilizer moisture within specified ranges, solving caking issues while reducing anti-caking agent usage.
High Automation
Three automatic features: automatic coal feeding, automatic ash discharge, and automatic measurement, greatly reducing worker labor intensity. Simple operation and easy furnace management solve the problem of furnace operator shortage.
High-Quality Auxiliary Components
Strict production process with meticulous attention to detail. Standardized procurement and strict control of steel plates, grates, refractory materials, and auxiliary components. High-quality parts ensure equipment reliability.
Environmentally Friendly
Complete combustion with no black smoke, flue gas blackness below "Ringelmann 1", SO2 emission concentration below 900mg/m3, meeting national standards. Non-pressure vessel, ensuring safety.
Application Areas
Chemical and Pharmaceutical Industry
Preparation and drying of chemical products, pharmaceutical products, and medicines
Coating Industry
Paint baking and powder coating curing for industrial products such as automobiles, motorcycles, containers, home appliances, and metal cans
Textile and Non-woven Industry
Heat setting, hot-melt dyeing, baking, and hot air stretching
Foundry Industry
Molding sand and core drying
Abrasive and Grinding Industry
Sandpaper and grinding wheel drying
Building Materials Industry
Wood drying, plywood, laminated board, gypsum board, and glass fiber products drying
Agricultural Products, Feed & Food Processing
Drying of coffee, tea, tobacco, vegetables, grains, noodles, aquatic products, fish meal, and soybean meal
Heating Engineering
Industrial plant and civil building heating
Welding Materials Industry
Electrode and flux drying
Insulation Materials & FRP Industry
Drying of aluminum silicate fiber products, rare earth insulation, and fiberglass products
About Us
LVSSN Group has established branches and supporting storage facilities in major Chinese cities including Hong Kong, Nanjing, Guangzhou, Chengdu, and Zhengzhou. Additionally, the group has set up technical support centers in Southeast Asia, Middle East, Africa, Europe, Central Asia, and Latin America, building an extensive and intensive service network. Currently, LVSSN Group has established long-term stable partnerships with thousands of top manufacturing suppliers in China and has conducted in-depth cooperation with thousands of enterprise clients across more than 50 countries and regions.
LVSSN Group is also a company focused on providing various industrial products, including parts, consumables, general equipment, and spare parts. It is a recognized global leader in MRO (Maintenance, Repair, Operations) industrial cross-border e-commerce comprehensive service platform. The group is committed to digital procurement management upgrade for major global factories and enterprise groups through supply chain digitalization.