Sulfur & air preparation
Condition sulfur feed and supply dry process air suitable for stable combustion and downstream conversion.
ACID PLANTS · SULFUR BURNING
Sulfuric Acid Plants
A complete contact-process system that connects sulfur handling, gas conversion, acid circulation and heat recovery into one operable plant.
CORE PROCESSFrom sulfur to useful acid and steam
FEEDElemental sulfur & dry air
PRODUCTSulfuric acid; optional oleum / SO3 integration
APPLICATIONNew plants, expansion and revamp
TMCE SCOPEStudy through lifecycle support
PROCESS CONTEXT
A familiar process with plant-specific decisions.
Sulfur-burning sulfuric acid production follows a well-established contact-process route: sulfur is burned to form SO2, the gas is catalytically converted to SO3, and SO3 is absorbed into circulating sulfuric acid.
The chemistry is only the starting point. Plant performance depends on how the reaction heat, gas pressure drop, catalyst arrangement, acid circulation, materials and utility interfaces are resolved as one system. TMCE organizes these decisions around the client’s feed basis, product slate, site utilities, environmental requirements and operating philosophy.
HOW IT WORKS
Five connected process stages.
The sequence is stable, but equipment configuration and heat integration must be developed for the project basis.
SO2 generation
Burn sulfur under controlled conditions and manage the furnace-to-boiler thermal transition.
Heat recovery
Cool hot process gas while recovering useful energy into the selected steam system.
Catalytic conversion
Convert SO2 to SO3 across catalyst stages with intermediate temperature control.
Acid production
Absorb SO3 into circulating acid, control concentration and manage final gas/mist performance.
DESIGN PRIORITIES
Optimize the plant, not one equipment item.
Each priority crosses process, mechanical, materials, controls and operating disciplines.
Heat and steam balance
Match waste-heat recovery, steam pressure levels and export or internal demand to the site-wide utility strategy.
Catalyst and temperature profile
Develop bed arrangement, catalyst selection and inter-stage cooling around feed, load range and environmental basis.
Gas-side pressure drop
Coordinate equipment, ducting and heat-exchanger layout to control blower demand and preserve operating flexibility.
Acid system and materials
Align concentration, temperature, circulation, corrosion allowance and material selection with the operating envelope.
TYPICAL SYSTEM SCOPE
Modular thinking, integrated engineering.
TMCE’s public process framework groups repeatable engineering knowledge into modules while preserving project-specific integration.
Capacity, conversion, emission, steam-production and utility figures are project-specific and should be published only after engineering confirmation.
Sulfur handling and melting
Combustion and burner system
Waste heat boiler and steam train
Converter and catalyst system
Inter-pass heat exchangers
Drying and absorption towers
Acid circulation and cooling
Mist elimination and stack interface
Instrumentation and BMS / controls
Optional oleum and SO3 systems
DELIVERY PATH
One technical thread from definition to operation.
Study & FEED
Feed basis, product slate, utilities, site constraints and concept selection.
Process & detail design
Process definition, equipment integration, interfaces and documentation.
Supply & startup
Key equipment coordination, commissioning preparation and startup support.
Lifecycle service
Troubleshooting, debottlenecking, revamp and operational improvement.
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