SU429726A1 - Device for combustion of metal sample for determining its sulfur content - Google Patents

Description

one

This invention relates to a physicochemical analysis of substances.

The known device for burning a sample of a metal or other material in determining the sulfur content in it does not provide a highly accurate analysis.

In order to increase the accuracy of the analysis, the proposed device contains a water-cooled form with a vapor pipe, installed so that the opening of the vapor pipe is located in the hot zone of the furnace, and between the outer surface of the tuyere and the inner surface of the tubular furnace there is an annular gap oven zone.

Diagram of the device shown in the drawing.

In the part 1 (hot zone) of the porcelain tube 2 of the furnace 3 heated to the maximum temperature, a boat 4 with an analyzed sample (sample) 5 is installed. At the end 6 of the porcelain tube there is a device 7 for introducing oxygen into the tube. A water-cooled lance 8 is installed inside the porcelain tube with a gas outlet tube 9 and a hole 10 for your new .- -J7,

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Yes, from the hot zone of the combustion gases, the opening being located in the hot zone of the porcelain furnace tube. At the end 11 of the porcelain tube there is a device 12 for introducing gas through the annular gap 13 formed by the outer surface of the tuyere and the inner surface of the porcelain tube to the hot zone

0 tubes.

When burning a sample in such a device in gaseous products of combustion generated during combustion

5 of the sample, an equilibrium ratio SO o is established in the hot zone of the furnace. : SO-j, determined by the temperature of the hot zone. When the temperature of the hot zone is constant, the ratio of 0 SO: SOj in the combustion products is also constant.

Combustion gases coming out of the hot zone 1 are mixed with cold oxygen entering the hot zone through the annular gap 13, and are cooled through the opening 10 in the tube 9 and are withdrawn (simultaneously intensively cooled) from the hot zone. In this case, the equilibrium ratio S0 "is fixed (quenched). SOj, corresponding to the high and constant temperature of the hot zone, also eliminates the loss of gaseous oxides caused by their absorption by pie-shaped oxides, since the temperature of pulverized oxides inside the vapor tube is much lower than the temperature of 500, at which this absorption is still noticeable. I

The use of the proposed device provides a high and stable SO: SO ratio in the gaseous products of sample combustion, a reduction in the absorption of gaseous sulfur oxides by powdered oxides and an increase in the accuracy of sulfur determination.

Claims (1)

The invention of the device for burning a metal sample in determining the sulfur content, including a tubular heating furnace, an agent for entering an oxidizer into the furnace, located at one end of the furnace, and means for removing gaseous products from the furnace from the furnace, characterized in that, in order to improve the accuracy of the analysis, it contains a water-cooled tuyere with a venting tube, installed so that the opening of the venting tube is located in the hot zone of the furnace, and between second surface of the lance and the inner surface of the tubular furnace there is an annular gap for introducing gas therethrough into the hot zone of the furnace. 0 f 5 4