Steinmüller Engineering GmbH
About
Steinmüller Engineering GmbH, headquartered in Gummersbach, Germany, is a 100% subsidiary of IHI Corporation (Tokyo) that builds on over 125 years of heritage from the original L. & C. Steinmüller boiler company, with key capabilities expanded through the 2019 acquisition of GRAF EnviroPro GmbH and the 2021 acquisition of Envirotherm GmbH's operations. The company operates across four primary domains: combustion and incineration, air pollution control, heat transfer, and carbon solutions. In sewage sludge treatment, Steinmüller delivers end-to-end systems from sludge reception and drying through fluidized bed incineration (open or closed nozzle bottom, adiabatic or cooled designs) to waste heat recovery and multi-stage flue gas cleaning, with 29 reference plants and single-line capacity scaling to 10 t/h dry matter. On the air pollution control side, the company offers dry flue gas cleaning via circulating fluidized bed reactors (CFB-S) with demonstrated SOx removal of 89-94% and HCl removal of 96-99% across flow ranges of 90,000-480,000 m³/h, electrostatic precipitators, fabric filters, wet scrubbers, and SCR/SNCR NOx reduction systems. Additional capabilities include CFBC boiler technology up to 250 MWel for special fuels, mercury measurement and removal services across 12 reference plants, molten salt thermal storage, and digital services including 3D scanning and Digital Twin process optimization. Steinmüller holds ISO 9001 and ISO 45001 certifications and has completed over 1,300 projects for 500+ customers across 80 countries.
Key Products
Stationary fluidized bed combustion system for sewage sludge thermal treatment, available in open or closed nozzle bottom designs with adiabatic or cooled configurations, processing 1.8-5.7 t/h dry matter.
Complete upstream sludge handling equipment including reception facilities, storage silos, and thermal drying systems to prepare sludge for incineration.
Recovers thermal energy from incineration flue gases to generate steam for power generation or process heat applications.
Dry sorbent-based flue gas cleaning system using circulating fluidized bed technology for acid gas and particulate removal.
High-efficiency particulate removal system for flue gas cleaning, reducing dust and particulate emissions from combustion processes.
Bag filter system for fine particulate and acid gas removal in dry flue gas cleaning applications.
Wet scrubbing system for sulfur dioxide removal from flue gases with minimized sorbent and process water consumption.
Wet scrubbing system for hydrogen chloride and ammonia removal from flue gases.
Selective catalytic reduction and selective non-catalytic reduction systems for nitrogen oxide emission control, ensuring compliance with strict emission standards.
Circulating fluidized bed combustion boiler for power generation from special fuels including biomass, biogas, and process residues, designed for capacities up to 250 MW electrical output.
Full engineering, procurement, and construction services including overall project management, engineering and consulting, and commissioning for combustion and air pollution control projects.
Upgrades and retrofits for existing furnaces and combustion systems to meet stricter emission rules without sacrificing plant efficiency.
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