Cylindrical tubular heating furnace

Abstract

The invention relates to the field of chemical equipment, and discloses a cylindrical tubular heating furnace. The cylindrical tubular heating furnace comprises a cylindrical radiant chamber (10), a middle furnace wall (20), a first combustor (30), a second combustor (40), a plurality of first furnace tubes (50) and a plurality of second furnace tubes (60), wherein the first furnace tubes are arranged in the circumferential direction of the radiation chamber, the middle furnace wall comprises a plurality of walls (21), the plurality of walls are crossed in the middle of the radiation chamber and extend in the radial direction of the radiation chamber so as to divide the cylindrical space in the radiation chamber into a plurality of heat supply areas, the plurality of heat supply areas areseparated from each other through the walls, the first combustor is arranged at the position, close to the middle part of the radiation chamber, of each heat supply areas, the second combustor is arranged at the position, close to the tail end of the walls, of the heat supply areas, and the plurality of second furnace tubes are arranged in each heat supply areas; and the heat supply areas can compactly arrange the combustor, so that the number of the combustors and the space utilization rate of the hearth are improved. According to the second furnace tubes, the heat absorption area of the furnace tubes is increased, and the heat load of the heating furnace is improved.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a cylindrical tubular heating furnace. Background technique [0002] Cylindrical tubular heating furnace is an important heating equipment in the chemical industry. Such as figure 1 and figure 2 As shown, the existing cylindrical tubular heating furnace generally includes a convection chamber 70 and a radiation chamber 10. The radiation chamber 10 is provided with first furnace tubes 50 arranged vertically along the circumference and arranged in the radiation chamber along the circumference. The burner F, the heat of the burner F is transferred to the surrounding first furnace tube 50 through radiation and convection heat transfer, so as to heat the process medium in the first furnace tube 50 . [0003] In the existing cylindrical tube furnace, the first furnace tube 50 and the burners F are arranged circumferentially in the furnace, so that the furnace space inside the pitc...

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Problems solved by technology

[0004] The object of the present invention is to provide a cylindrical tubular heating furnace which has a relatively high space utilization rate in order to overcome the problem of low space utilization in the radiation chamber of the cylindrical tubular heating furnace in the prior art. utilization, and can increase the thermal load of the furnace

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