NOVELTY - Thermal energy production process using crude glycerin as a fuel in a boiler, involves continuously separating saline components (e.g. potassium carbonate and sodium carbonate) from combustion products of crude glycerin, while thermal exchanges take place in the boiler.    USE - As thermal energy production process for producing heat and steam simultaneously (claimed); useful in biodiesel production.    ADVANTAGE - The thermal energy production process uses crude glycerin as a fuel in the boiler. The method prevents deposition of the saline components (e.g. carbonates) produced by firing of crude glycerin at high temperatures, thus avoiding obstruction of burners and blockage of the installation used for implementing the thermal energy production process. As a result, it is possible to design the installation including the boiler for firing crude glycerin, without depending on the specific origin and composition of the crude glycerin, thus providing small to moderate scale biodiesel-producers with glycerin purification facility.    DETAILED DESCRIPTION - Thermal energy production process using crude glycerin as a fuel in a boiler, involves continuously separating saline components (e.g. potassium carbonate and sodium carbonate) from combustion products of crude glycerin, while thermal exchanges take place in the boiler. Major part of the saline components are solidified via heat transfer by contacting the combustion products with a thermal exchanger (e.g. heat exchanger tube portions (13)) of the boiler, and are set down at the bottom of the boiler compartments encasing the thermal exchanger. The saline components deposited on the thermal exchanger are detached from the thermal exchanger by vibrations, so that the saline components get deposited at the bottom of the compartments, to be removed from the compartments. The saline components that do not deposit at the bottom of the boiler compartments, are carried to and retained by a filter arranged downstream the boiler. An INDEPENDENT CLAIM is included for an installation (1) useful for implementing thermal energy production process, comprising a boiler having a burner (2), a furnace (5), a convector (7) and an exit filter; where the burner is fitted with a surrounding muffle (4), so that the saline components are swept along by the gases of combustion, without depositing on the burner.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic horizontal sectional view of an installation for implementing thermal energy production process.    Installation for implementing thermal energy production process (1)    Burner (2)    Exit nozzle of burner (3)    Muffle (4)    Furnace (5)    Steel tubes for circulation of fluid coolant (6, 8, 15)    Convector (7)    Economizer (9)    Filtration unit (10)    Blower (11)    Outlet chimney (12)    Heat exchanger tube portions. (13)