What Is a Hot Gas Generator & Hot Gas Dryer?
A Hot Gas Generator (HGG) is an industrial combustion system that burns fuel — including oil, coal, biomass, RDF, plastic waste, and other Alternative Fuels and Raw Materials (AFR) — to produce a controlled stream of high-temperature gases. These systems are engineered to deliver precise outlet temperatures ranging from 200°C to over 900°C, making them suitable for a wide range of industrial heating and drying applications.
Hot Gas Dryers utilize the high-temperature gas produced by the generator to dry bulk materials such as coal, gypsum, limestone, minerals, sludge, biomass, and RDF. The wet material is introduced into the drying system — typically a rotary drum or flash dryer — where direct contact with the hot gas rapidly evaporates moisture, reducing material humidity to the target level required for downstream processing or storage.
By enabling the use of alternative and waste-derived fuels, hot gas generators help industries significantly reduce dependence on conventional fossil fuels. This supports circular economy principles, lowers operating costs, reduces carbon emissions, and allows waste streams to be valorized as energy inputs — contributing to both sustainability goals and operational efficiency.
We specialize in delivering complete hot gas generation and drying systems — from initial concept and feasibility to installation and commissioning. Our experienced engineering team ensures optimal combustion design, precise equipment selection, and seamless execution to deliver reliable and high-performance systems.
- Multi-Fuel Capability – Oil, Coal, Biomass, RDF & AFR
- Site Assessment and Thermal Design Studies
- Detailed Engineering and System Design
- Supply of Combustion & Drying Technology
- Installation and Commissioning Support
Fuel Feed System
Combustion Chamber
Temperature Control System
Hot Gas Duct & Distribution
Rotary Dryer / Flash Dryer
Dust Collection & Exhaust
Best For
Hot gas generators are used to dry raw meal, coal, and slag in cement manufacturing. Our systems ensure consistent fuel combustion and temperature for efficient kiln and dryer operations while reducing fossil fuel use.
Used for drying ores, minerals, and industrial powders. Our solutions handle diverse fuel types and deliver precise temperature control for sensitive drying processes that maintain product quality.
Hot gas dryers help reduce moisture in fertilizers, chemicals, and by-products, improving product quality, shelf life, and packaging efficiency for downstream handling.
Biomass, RDF, and plastic waste-fired hot gas systems support energy recovery from waste while serving industrial drying needs, reducing fossil fuel dependency and lowering carbon footprint.
