Abstract: Thermogravimetric Reactor (TGR) and process to study weight change behavior of carbonaceous solids/catalysts during thermo-chemical reactions in gaseous environment up to the maximum operating temperature of 1000° C. and at atmospheric pressure are disclosed. The device includes a vertical tube reactor, digital weighing balance, gas feeding system equipped with volumetric flow controllers, rotameters, isolation valves and non-return valves to introduce inert and reactive gases and their mixtures to the reactor. It also has a movable electrical furnace heater for sudden heating/cooling of sample as per requirement. It also has sample feeding/loading system comprising containers of different sizes and shapes with a hanging arrangement There is arrangement to test the product gas composition with on line gas analyzer in the exit line or collecting the outgoing gas from the sampling port for off line gas analysis. The system also has control panel to store and display data including process parameters.

Abstract: The present invention discloses oxygen enriched air blown pressurized fluidized bed pilot scale refractory lined gasifier of 1.5 TPD feed capacity to gasify coal, biomass, washery rejects, and their blends in any proportion in the actual atmosphere of commercial gasifier. The system is equipped in such a way that it can be operated in air/oxygen/oxygen enriched air/steam as well as their mixture in any proportion as per process requirement. The present invention discloses gasifier having feed rate carrying capacity up to 60 kg/hour, maximum operating temperature up to 1050° C. and pressure up to 10 kg/cm2. The facility consists different sections for gaseous and solid feeding, gasification, ash withdrawal, and gas Cooling & Cleaning. Besides gasification performance analysis, present invention is also discloses the study of agglomeration characteristics, entrainment and other fluidized bed gasification related parameters.