STEAM AND HOT WATER PLANT - CUMULATIVE WITH RECUPERATOR OF FLUE GAS HEAT USE IN TUNNEL OVEN PLANT

摘要

The invention herewith described refers to the steam and hot water plant - the cumulative with the recuperator of the flue gas heat use in the tunnel oven plant consisting of the tunnel oven (1), the recuperator (3) of water heater with the degasser (7) the fan (2) and the primary circulation pump (4), the cumulative supply water heater (8) with the degasser (9) and with the level controller (22) and the steam condenser and the water preheater (19), the steam spreader (6) with safety U - pipe (18) and water (10) of pressure limit (25) and the boiling water reheater (5) and the steam consumer (16) with the steam flow regulators (15) and the water flow regulator (23) with the pressostats (pressure switches) for guiding (26) and the magnet valves (20) and (29) with the two-stage safety pressostat (pressure switch) (27), water (11) for equalizing the water level (17), and the secondary circulation pump (13) with the non-return valve (14) and the magnet valve (31) for heat consumers (32). The invention uses mostly the waste energy carried by the output gases from the tunnel oven to provide for the required technological needs for the low pressure steam and heat for process and sanitary hot water i.e. to avoid the boiler plant for such purposes. There is allowed the functional energy compatibility of the tunnel oven (1) and heat capacity of devices of the plant unit with the water heater (3) the hot water reheater (5) and water accumulation in the supply water heater (8) and the steam spreader (9) as well as the connected secondary system with the circulation pump (13). The compactness of the plant from the registered patent does not require a special space outside the tunnel oven (1) and the automatic control provides the safe operation and adjustment to the technological needs of the tunnel oven (1).