Continuous heat-storage type fume residual heat recovering device

Abstract

A continuous regenerative flue gas residual heat recycle device belongs to the industrial furnace energy saving field. The device is made from high heat resistance and conduction materials. A gas passage in the device is separated into mutually independent multistory spaces. Flue gas passages and air (gas) passages are arranged in a stratified and staggered way (that is a layer of flue gas passage is connected with a layer of air (gas) passage in the height direction, a staggered arranged sandwich structure). Every layer of gas flow passage is a honeycomb channel, which is made from high thermal conductivity materials. The hest recycle device has the advantages mentioned below. First, the heat exchange rate is fast. The thermal conductivity rate of a regenerator is high. And heat exchange between flue gas and air can be done rapidly. Second, the device can work continuously. Communication is not required in the wind supply and the smoke exhaust. And the system is simple. Third, utmost waste recovery is really realized. No heat and fuel loss caused by volume effect is made during the communication. Fourth, with a long service life, the device can be flexibly arranged. And the device has relative small relevance with the furnace, which makes the failure risk lowered and is convenient for the engineering management.

Description

Technical field: [0001] The invention belongs to the field of energy saving of industrial furnaces and kilns, and relates to waste heat recovery technology and devices in high-temperature industrial furnaces, in particular to a technology and a device capable of recovering waste heat of flue gas in a continuous regenerative manner. technical background: [0002] The waste heat of flue gas in industrial furnaces accounts for a large part of the total heat. The key to saving energy and reducing consumption is to recover and make good use of the waste heat of flue gas. At present, the flue gas waste heat recovery technology used in industrial furnaces mainly includes heat exchangers and regenerators. However, both of these two technologies have shortcomings, which restrict their application and development. [0003] For the heat exchanger, its disadvantages mainly include: (1) The heat exchanger has high requirements on the temperature resistance and corrosion resistance of th...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the periodic discontinuous operation of regenerator technology, periodic switching of flue gas heat release and air (coal gas) heat absorption process, resulting in fluctuations in furnace pressure, temperature, etc., and volume effects during reversing. Waste of energy, short service life of the heat storage body in a rapidly cooling and rapidly heating environment, complex system, high cost and maintenance cost, large power consumption, easy wear and tear of the reversing system, and short service life

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