Novel heating furnace with multi-hearth structure

Abstract

A novel heating furnace with a multi-hearth structure comprises a feeding pipeline, a combustor, a furnace body and outlet pipelines, wherein the one combustor is disposed, and at least two hearths are disposed inside the furnace body; a switchable heat-insulated switch plate is disposed at the entrance of each of the hearths; a remote-transport differential pressure gauge is respectively disposed between the entrance and the exit of each of the hearths; feeding space is disposed between the combustor and the hearths, and the feeding pipeline enters the feeding space; and each of the hearth respectively comprises the outlet pipeline, and heat-insulated filler is disposed between the adjacent hearths. Without changing configuration and material of a furnace tube and quantity of the combustor, the novel heating furnace with the multi-hearth structure provided by the invention can be timely switched to heating of the other hearth when one of the hearths fails, does not need to conduct parking overhauling of the whole heating furnace, prolongs duration for the device parking caused by the overhauling of the heating furnace, increases operational stability of the device, does not need to dispose more standby furnaces and greatly reduces cost.

Description

technical field [0001] The invention relates to a novel heating furnace with a multi-hearth structure, which belongs to the fields of petrochemical and coal chemical industries. Background technique [0002] Heating furnace is a kind of heating equipment widely used in petroleum, chemical industry, metallurgy, electric power and natural gas industries. Its function is to use oil or gas as fuel to heat oil or other media. To meet the temperature requirements of downstream equipment for process streams. In the petrochemical industry, tubular heating furnaces have been widely used as a heating means to provide heat energy for petrochemical production. [0003] Tube heating furnace generally consists of five parts: radiation chamber, convection chamber, waste heat recovery system, burner and ventilation system. Furnace tubes are installed in the radiation chamber and the convection chamber, and this part is directly subjected to flame grilling, and the temperature is the highe...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems of the prior art, the present invention proposes a new type of heating furnace with a multi-hearth structure. When the heating furnace tube in one furnace is affected by factors such as corrosion, coking and blockage, the operation is automatically or manually switched to another furnace. Realize continuous operation, which fundamentally solves the problem of device shutdown caused by coking of the furnace tube

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