Solid-solid heat exchange device starting protection device, using method thereof and heat exchange device

Abstract

The invention discloses a solid-solid heat exchange device starting protection device. The solid-solid heat exchange device starting protection device comprises a protection device heating pipe, a superheated steam introducing pipe, a mixing header, an evaporation heating surface pipe outlet and an evaporation heating surface pipe inlet, wherein the protection device heating pipe is arranged in the mixing header, one end of the protection device heating pipe is connected with the superheated steam introducing pipe outside the mixing header, and at least one small hole for discharging steam isformed in the protection device heating pipe; and the mixing header is provided with the evaporation heating surface pipe outlet and the evaporation heating surface pipe inlet, the evaporation heatingsurface pipe outlet is formed above the mixing header, and the evaporation heating surface pipe inlet is formed below the mixing header. The solid-solid heat exchange device starting protection device is simple in structure and reliable in performance, pipe explosion is avoided, the cost is greatly reduced, the energy consumption is reduced, and the number of mechanical fault points is also reduced. The invention further provides a using method of the solid-solid heat exchange device starting protection device. Before starting, high-temperature steam is introduced from the side to establish heat exchanger water circulation. The method is simple, feasible, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a device for protecting the heat exchange device and the heat exchange device when the heat exchange device is started. Background technique [0002] At present, the domestic cooling treatment process for high-temperature solid bulk and granular materials (such as high-temperature sintered ore and pelletized mineral materials, hereinafter referred to as "high-temperature materials") mainly adopts belt-type air coolers, ring-type air coolers or Vertical air cooling device for cooling. [0003] The dust-laden hot flue gas that cools the high-temperature material enters the waste heat boiler to generate hot water or low-parameter steam. The heat recovery system is complicated, the air leakage rate is high, the sensible heat recovery efficiency of the high-temperature material is low, and the operation and maintenance costs are high. [0004] In view of the above sit...

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Problems solved by technology

[0018] The present invention aims to provide a solid-solid heat exchange device startup protection device and its use method and heat exchange device. The technical problem to be solved is that when the existing solid-solid heat exchange high-temperature waste heat recovery boiler processes high-temperature materials:

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