A 300 TPD sulfuric acid plant is a medium-scale industrial chemical production facility that requires coordinated design of the reaction, gas treatment, acid absorption, heat recovery and utility systems. When a steam turbine is included for electricity generation, the project becomes more than a conventional sulfuric acid production line. The process must be designed to recover usable heat from high-temperature process gases and chemical reactions, convert this heat into steam and then supply the steam to a turbine-generator system. Therefore, plant capacity, heat balance and power generation should be evaluated together during the initial engineering stage.

The first technical parameter to confirm is the source and composition of the sulfur-bearing feedstock. Sulfuric acid can be produced from elemental sulfur or from sulfur-containing gases generated by metallurgical and other industrial processes. A sulfur-burning plant has a relatively direct feed preparation route, while plants using pyrite or metallurgical off-gas require additional gas cleaning and conditioning systems. Feed composition directly affects the SO₂ concentration, gas volume, impurity load, equipment sizing and overall process configuration. Therefore, a 300 TPD capacity alone is not sufficient to define the complete plant.

When electricity generation is required, the steam generated by the heat recovery system is supplied to a steam turbine connected to an electrical generator. The turbine expands the steam and converts part of its thermal and pressure energy into mechanical energy, which is then converted into electricity by the generator. The actual power output depends on steam production rate, steam pressure and temperature, turbine efficiency, exhaust pressure and the operating conditions of the entire sulfuric acid plant. Therefore, the expected electrical output should be calculated from a complete heat and steam balance rather than estimated from sulfuric acid capacity alone.

The integration of the sulfuric acid process and steam turbine requires a detailed energy balance. Increasing heat recovery may increase steam generation, but the steam pressure and temperature must remain compatible with the turbine design. At the same time, the plant may have internal steam requirements for sulfur melting, heating, process circulation or other utilities. A suitable configuration should determine how much steam is available for power generation after satisfying essential process requirements. This prevents the turbine system from being designed around an unrealistic steam surplus.