Rothemühle regenerative air preheaters and electrostatic precipitators

Engineered heat transfer and flue gas cleaning machinery by Rothemühle within Howden and Chart Industries: rotary air preheaters, DREBS regenerators, and electrostatic precipitators.

Rothemühle: air preheaters and electrostatic precipitators

Rothemühle operates as an advanced product brand of Howden within Chart Industries, providing high-efficiency rotary regenerative heat exchangers, high-temperature DREBS units, and industrial electrostatic precipitators. The machinery optimizes heat recovery and mitigates emissions.

German precision engineering heritage established in the 1930s with heat transfer expertise
Specialized Howden technological business unit integrated into Chart Industries portfolio
Rotary air preheaters and emission cleaning electrostatic precipitators for heavy industry
Comprehensive engineering upgrades and thermal modernization for operating utility boilers

Rothemühle rotary regenerative air preheaters

Rothemühle regenerative air preheaters extract thermal energy from exhaust boiler flue streams through continuously revolving heat transfer matrices. The rotating heating element warms the incoming combustion air, boosting overall steam boiler thermal efficiency by 10 to 15 percent.

Site-built and pre-engineered package heaters for coal-fired and gas-fired power stations
Boiler thermal efficiency enhancement by 10 to 15 percent through flue gas heat absorption
Low rotor rotation speeds between 1 and 2 rpm ensuring extended mechanical drive longevity
Adjustable parabolic sector plates preventing air leakage into lower-pressure flue gas paths

Rothemühle DREBS high-temperature regenerator systems

The Rothemühle DREBS rotating regenerator burner system incorporates high-purity ceramic heat transfer honeycomb matrices operating in harsh exhaust streams reaching 1200 °C. The thermal efficiency exceeds 85 percent, doubling energy savings compared to conventional metallic recuperators.

Flue gas operational temperature window reaching 1200 °C in industrial furnaces and dryers
Thermal efficiency exceeding 85 percent delivering twofold fuel savings over recuperators
Thermal shock resistant ceramic honeycomb matrices withstanding aggressive ash slagging
Elevated thermal output for industrial firing plants alongside reduced specific emissions

Rothemühle gas-gas heaters for flue gas desulfurization

Rothemühle gas-gas heaters (GGH) recover thermal energy across wet flue gas desulfurization (FGD) and SCR systems. The equipment transfers heat from untreated hot gases to the treated stream before chimney discharge, preventing droplet deposition and eliminating visible flue plumes.

Specially enameled heat transfer plates preventing acid corrosion in dew point regimes
Elimination of sulfuric acid vapor condensation across low-temperature matrix layers
Effective reheat of cleaned flue gas without requiring external auxiliary station steam
Hydrodynamic gas path design minimizing overall system draft loss across induced fans

Rothemühle industrial electrostatic precipitators (ESP)

Rothemühle electrostatic precipitators leverage over 70 years of gas cleaning innovation. The units feature collecting electrodes reaching up to 16 meters in height, robust mechanical tumbling hammer rapping systems, and high-frequency SMPS power sets for high-efficiency dust capture.

Collecting electrodes reaching 16 meters in height providing minimal plant footprint
Uniform gas inflow distribution achieved through DELTA WING advanced static flow mixers
Switched mode power sets (SMPS) providing ultra-fast spark detection and voltage control
Rigorous particulate emission reduction complying with demanding global environmental limits

Rothemühle replacement components and heat transfer matrices

For ongoing maintenance of air preheaters and precipitators, we supply profiled steel and vitreous enameled elements, DREBS ceramic blocks, discharge electrodes, sealing sector plates, and automated high-pressure nozzles for the Howden Enerjet online water washing system.

Profiled heating element sheets engineered for hot, intermediate, and cold rotor layers
Acid-resistant vitreous enameled element baskets for acid dew point temperature zones
Alloy steel radial, axial, and circumferential sealing plates with high wear tolerance
Precision nozzles and hydraulic drive components for Howden Enerjet washing equipment

Rothemühle engineering heritage and Howden heat transfer manufacturing

Rothemühle originated in Germany during the 1930s, accumulating nearly ninety years of engineering prowess in high-efficiency boiler heat recovery equipment and over seven decades in industrial electrostatic precipitation.

Developing advanced rotary regenerative heat exchangers and dry dust cleaning installations, the manufacturer established an enduring international reputation.

In 2021, the Rothemühle brand and its intellectual properties joined Howden's global heavy machinery portfolio.

Today, the business unit represents an integral component of Chart Industries and Baker Hughes, equipping energy producers and heavy manufacturing plants with dependable systems engineered for deep flue gas thermal recovery.

Rotary regenerative air preheaters and package configurations

Rothemühle rotary regenerative air preheaters extract thermal energy from boiler flue streams across utility power stations and firing plants.

Rotating slowly at 1 to 2 rpm, the cylindrical rotor transfers profiled heating element matrices between hot gas ducts and incoming cold combustion air ducts continuously.

Absorbed heat preheats incoming air before furnace entry, increasing overall boiler thermal efficiency by 10 to 15 percent and lowering specific fuel consumption.

Heavy forged rotor shafts, self-aligning bearing assemblies, and adjustable parabolic seals prevent high-pressure air leakage into low-pressure gas streams under thermal expansion.

High-temperature DREBS ceramic rotating regenerator systems

The Rothemühle DREBS rotating regenerator burner system represents an advanced high-temperature thermal solution where conventional metallic sheets are replaced with high-purity ceramic honeycomb matrices. The equipment operates in severe firing exhaust streams reaching temperatures up to 1200 °C.

With thermal efficiency exceeding 85 percent, DREBS delivers twofold fuel savings over conventional metallic recuperators.

The unit optimizes heating furnaces, metal reheating lines, industrial rotary dryers, and waste thermal destruction plants, lowering nitrogen oxide emissions through balanced combustion temperature profiles.

Gas-gas heaters for flue gas desulfurization and denitrification

Rothemühle gas-gas heaters (GGH) perform essential thermal recovery across wet flue gas desulfurization (FGD) and SCR denitrification installations. The equipment extracts heat from untreated hot boiler flue streams and transfers it to cleaned gas prior to chimney stack discharge.

Stack gas reheating restores plume buoyancy, maintains natural draught, and prevents acid dew point moisture condensation along duct internals.

Cold-end heating elements feature dual-sided vitreous enamel protection, resisting concentrated sulfuric acid corrosion and tolerating automated routine water washing.

Industrial dry electrostatic precipitators and gas cleaning

Rothemühle dry electrostatic precipitators leverage over seventy years of particulate separation innovation across power generation, metallurgy, and cement manufacturing.

Units feature rigid collecting electrodes up to 16 meters tall, providing expansive collecting surfaces within compact plant footprints.

Upstream DELTA WING static flow mixers increase gas inflow homogeneity by 75 percent with minimal pressure drop.

Modern switched-mode power supplies (SMPS) with high-speed microsecond controllers suppress electric sparking rapidly, sustaining elevated mean operational voltages across precipitation fields.

Routine maintenance, Enerjet washing, and replacement components

Preserving optimal aerodynamic draught and heat transfer performance is achieved through the Howden Enerjet automated high-pressure washing system. Enerjet cleans revolving heating element baskets with high-pressure water jets while boilers operate under continuous normal power generation.

For scheduled overhauls, we supply cold and hot end replacement element baskets, alloy steel sealing strips, drive bull gears, bearing assemblies, and precipitator electrodes. Accurate component ordering utilizes the serial number stamped on the machinery metallic nameplate against factory archives.

Rothemühle and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Rothemühle and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.