Heat energy device for preparing superheated steam with waste heat steam

Abstract

The invention discloses a heat energy device for preparing superheated steam with waste heat steam, which effectively solves the problem that conventional heat sources for drying brown coal are uneconomic and have the hidden troubles of ignition and explosion. The device comprises a partition wall, a base, a heat exchange part, an upper independent smoke box, a lower independent smoke box and upper and lower integrated smoke boxes. Key points are that: the heat exchange part is provided with a low temperature heat exchange region, a medium temperature heat exchange region and a high temperature heat exchange region which are formed by a tube bundle heat medium exchanger respectively; tube cavities of the tube bundle heat medium exchangers at each heat exchange region are communicated withthe cavities of the upper independent smoke box, the lower independent smoke box and the upper and lower integrated smoke boxes respectively; staggered tube gaps between an upper tube plate and a lower tube plate of each tube bundle heat medium exchanger at the heat exchange part form a communicated cavity; the communicated cavity of the low temperature heat exchange region is connected with a waste heat steam conveying tube; and the communicated cavity of the high temperature heat exchange region is connected with a superheated steam supply tube. The device has the characteristics of rational structural design, stable performance, easy maintenance, low operating cost, energy conservation, consumption reduction, emission reduction and wide application range and can reduce the one-time investment when used for drying the brown coal.

Description

technical field [0001] The present invention relates to a thermal energy device at normal pressure, especially a thermal energy device for preparing superheated steam with waste heat gas, which is mainly used in the "lignite drying and upgrading process for preparing superheated steam with waste heat gas" designed by the inventor ( A patent has been applied for separately) as a heat energy device that provides heat exchange medium, and uses it to dry, dehydrate and upgrade flammable and explosive materials such as lignite. This thermal device is not a steam boiler, but it can produce superheated steam comparable to steam boilers. It is an economical thermal equipment for energy saving, consumption reduction and emission reduction. It is suitable for drying and dehydrating high-moisture materials such as industry, pharmaceutical industry, chemical industry, light industry and military industry, and has a wide range of applications. Background technique [0002] my country ha...

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Problems solved by technology

[0007] The object of the present invention is to provide a heat energy device for preparing superheated steam from waste heat gas, which effectively solves the problem that it is uneconomical to use boilers for drying lignite to produce superheated steam as a heat source, and it is economical to use high-temperature flue gas as a heat source, but there is also a fire hazard. and explosion hazards; its structural design is reasonable, its performance is stable, it is easy to maintain, and its operation cost is low. sexual investment

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