A direct-fired gas dryer

Abstract

The invention relates to the field of drying equipment, in particular to a direct-burning type gas drying cylinder. The direct-burning type gas drying cylinder comprises a tubular cylinder body and end covers which are respectively arranged at the two ends of the cylinder body, wherein the two end covers are each provided with an operating side shaft head and a driving side shaft head; an exhausting end cover is provided with air vents; the driving side shaft head is provided with an ignition system; the ignition system comprises a gas supply device and an igniting device, wherein the gas supply device comprises a combustion supporting gas pipeline and a gas pipeline; the combustion supporting gas pipeline is communicated with a pipe chamber; the gas pipeline extends into the cylinder body; the igniting device is connected with the end part of the gas pipeline. The direct-burning type gas drying cylinder abandons the existing steam drying way and adopts natural gas as a raw material to realize the aim of drying a fiberboard by direct combustion inside the cylinder body; combustion of natural gas causes no environmental pollution; the natural gas is directly combusted in the drying cylinder to prevent loss of flame heat, so that the outer wall of the cylinder body can be heated better, and higher heat energy utilization rate can be realized; therefore, the efficiency of the direct-burning type gas drying cylinder for drying the fiberboard is improved.

Description

technical field [0001] The invention relates to the field of drying equipment, in particular to a direct-fired gas drying cylinder. Background technique [0002] At present, the production mode of latex fiberboard is to use steam to heat the drying cylinder to dry the product, and the steam is usually provided by a coal-fired boiler. The coal-fired boiler produces steam, and the steam is fed into saturated steam through the steam joint to condense inside the drying cylinder, and the released heat makes the temperature of the drying cylinder rise, thereby heating the product covered on the surface of the roll shell. Heat is transferred into the product during contact between the product and the cylinder surface. However, exhaust gas emissions from coal-fired boilers have always been the focus of national environmental protection monitoring. In recent years, in order to increase environmental protection efforts, more and more local governments have begun to set up coal-fired ...

AI Technical Summary

Problems solved by technology

However, the exhaust gas emission of coal-fired boilers has always been the focus of national environmental protection monitoring. In recent years, in order to increase environmental protection efforts, more and more local governments have begun to set up coal-fired no-combustion zones, so coal-fired boilers cannot continue to be used.

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