Tunnel type hot air drying furnace comprehensively utilizing heat energy

Abstract

The invention relates to the technical field of hot air drying furnace application. The invention discloses a tunnel type hot air drying furnace capable of comprehensively utilizing heat energy. The tunnel type hot air drying furnace comprises a tunnel drying furnace body and a transport trolley, wherein the interior of the tunnel drying furnace body is divided into a preheating area, a dehydration and moisture removal area, a drying area and a performance tempering area according to functions; the tunnel drying furnace body comprises a first variable-frequency moisture removal fan fixedly mounted at the top of the tunnel drying furnace body; the output end of the first variable-frequency moisture removal fan is fixedly communicated with a three-way pipe; and an output end of the three-waypipe is fixedly communicated with an exhaust pipe. According to the tunnel type hot air drying furnace capable of comprehensively utilizing the heat energy, through cyclic utilization of the heat energy, the heat energy can be effectively saved, the natural gas consumption and tail gas emission are reduced, meanwhile, under the regulation and control effects of temperature detectors and humiditymeasurers, the problems of poor stability and unbalanced moisture removal of all temperature areas are solved, the energy utilization rate is increased, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of hot air drying furnace application, in particular to a tunnel type hot air drying furnace for comprehensively utilizing heat energy. Background technique [0002] According to the cleanliness of the output medium, the drying furnace can be divided into two types: direct-fired hot air (flue gas) furnace and indirect hot air furnace. The fuel is directly burned, and after high purification treatment, a certain temperature of flue gas is formed—the so-called hot air. In direct contact with the material, it is heated and dried or baked to reduce the moisture content in the material. [0003] At present, the most common tunnel-type drying furnace on the market generally adopts technologies such as zoned heating in the direction of the tunnel, hot air circulation, and centralized air induction to exhaust moisture to gradually realize drying and drying. Finally, the materials are dehumidified and dried by the wa...

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Problems solved by technology

[0007] The invention provides a tunnel-type hot air drying furnace that comprehensively utilizes heat energy, which can continuously dry and bake without interruption, improve product production efficiency, and solve the problems of low heat energy utilization rate, high local temperature, poor stability in each temperature zone and problems in each zone. The tidal discharge is controlled by the air valve, and then the centralized air induction and dehumidification cannot effectively control the tidal discharge volume in each area, which is likely to cause a lot of waste and the drying efficiency is not high.

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