An annular combustion furnace with temperature subdivision function

Abstract

The invention discloses an annular combustion furnace with a temperature subdividing function and belongs to the field of equipment for analyzing the sulfur content of combustible substances in bituminous coal. The annular combustion furnace comprises a lower combustion furnace cover, a combustion furnace body, an upper combustion furnace cover, a rotary table, a stepping motor and a rotary shaft, wherein the lower combustion furnace cover is arranged on a combustion furnace frame; the stepping motor is arranged on a motor frame; one end of the rotary shaft is connected with the rotary table, and the other end of the rotary shaft is connected with an output shaft of the stepping motor. A flange hole is formed in the center of the top of the lower combustion furnace cover, a rotary shaft hole is formed in the center of the lower combustion furnace cover in the axis direction, and second heat insulation plates are evenly arranged in the circumferential direction of the lower combustion furnace cover. Twenty crucible holes are evenly distributed in the rotary table in the circumferential direction. A third heat insulation plate and a fourth heat insulation plate are arranged between every two adjacent crucible holes. Five to ten heating resistance wires are arranged on the inner wall of the combustion furnace body. According to the annular combustion furnace, the structure is simple, the service life of the resistance wires is longer, multiple temperature zones are achieved, and the temperature subdividing function is achieved.

Description

technical field [0001] The invention mainly relates to the field of analysis equipment for sulfur content in bituminous coal combustible substances, in particular to an annular combustion furnace with temperature subdivision function. Background technique [0002] It is of great significance to measure the content of sulfur in combustible substances. The classic Aisi sulfur measurement method needs to move the crucible containing the Aisi experimental sample into the combustion furnace, gradually heat it from room temperature to 800-850°C within 1-2h, and keep it at this temperature for 1-2h. The bituminous coal combustion furnace in the prior art has a single temperature zone structure mode. Although the bituminous coal combustion function is realized, because it requires continuous heating, constant temperature, and then cooling processes, it can only measure coal samples in batches, that is, the first batch of samples The second batch of Ehrlich test samples cannot be pl...

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Problems solved by technology

The bituminous coal combustion furnace in the prior art has a single temperature zone structure mode. Although the bituminous coal combustion function is realized, because it requires continuous heating, constant temperature, and then cooling processes, it can only measure coal samples in batches, that is, the first batch of samples Cannot put the second batch of Ehrlich test samples in the muffle furnace before the end of the experiment

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