Condensation water residual heat first-effect flash evaporation natural air dehumidifying, preheating and drying baking oven system

Abstract

The invention relates to a condensation water residual heat first-effect flash evaporation natural air dehumidifying, preheating and drying baking oven system. A baking oven is internally provided with a coil heat exchanger set; the outlet of the coil heat exchanger set is respectively provided with a water draining valve and is connected with a high-temperature condensation water pipe; the high-temperature condensation water accesses to a flash evaporation tank; flash evaporation steam enters a flash evaporation steam pipe from a constant-pressure overflow valve; one way of the outlet of the flash evaporation steam pipe is connected to a lithium bromide refrigerating machine, and the other way of the outlet of the flash evaporation steam pipe is connected to an air preheater through a front pressure automatic regulating valve; the refrigeration water outlet of the refrigerating machine is connected with the water inlet of a cooler of a superficial cooling mist extractor, and the water outlet of the cooler is connected with refrigeration water inlet of the lithium bromide refrigerating machine; and natural air accesses to the humid air inlet of the superficial cooling mist extractor, the dry air outlet of the superficial cooling mist extractor accesses into an air blower, and is sent into the air inlet of the baking oven through the air preheater by the air blower. The system not only can guarantee the drying degree of materials to achieve the technological requirements, but also the utilization efficiency of steam can be improved, and the dissipation of energy of unit product is reduced.

Description

technical field [0001] The invention relates to a drying oven, in particular to a condensed water waste heat one-effect flash evaporation natural air dehumidification preheating drying oven system. Background technique [0002] The air drying oven is equipped with an oven inlet, an oven outlet, a wet material inlet and a dry material outlet. The oven usually includes multiple sets of parallel coil heat exchangers, and each coil heat exchanger consists of multiple coil heat exchangers. The heat exchangers are connected in parallel. The inlets of each coil heat exchanger group are respectively connected to the main steam pipe through steam stop valves. Condensate pipe. When the steam flows through the heat exchangers of each coil, it exchanges heat with the air and releases latent heat, and then condenses into high-temperature condensed water under the same pressure. The high-temperature condensed water is discharged into the main condensed water pipe through each steam trap;...

AI Technical Summary

Problems solved by technology

During the working process of the oven, the blower blows air into the oven. When the blower sends in dry air, it also sends water vapor into the oven. After absorbing the heat released by the coil heat exchanger, it is discharged as waste gas, which wastes a lot of heat energy; in addition, due to the existence of water vapor, the blower needs to send in more air to meet the needs of heat and moisture exchange, which increases power consumption and Increased exhaust heat loss

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