Method and apparatus for producing molten sulfur from sulfur foam

Abstract

The present invention provides a method and apparatus for producing molten sulfur from sulfur foam. In this method, the sulfur foam is sent into the sulfur melting device through a delivery pump, and after being preheated in the heat exchange section at the upper part, it enters the settling section in the middle to settle and separate into desulfurization liquid and concentrated sulfur paste. Returning to the desulfurization system, the separated concentrated sulfur paste is heated to form molten sulfur and then discharged. The equipment consists of a delivery pump and a sulfur melting device. The sulfur melting device includes an upper heat exchange section and a lower heating section. There is also a settling separation section between the two. The desulfurization liquid output is provided on the sulfur melting device. The pipeline and the heating medium pipeline are equipped with a sulfur discharge valve at the bottom of the heating section. The sulfur melting process device of the present invention has low operating average temperature, low energy consumption and long service life of the equipment, so the cost of desulfurization can be reduced; since the heat exchange area is relatively small, the project construction investment can also be reduced.

Description

technical field [0001] The invention belongs to the technical field of desulfurization, and in particular relates to a process method and a device for separating molten sulfur through indirect heating of steam or heat-conducting oil from sulfur foam generated after desulfurization of fluid containing sulfide. Background technique [0002] At present, there are various processing methods for producing molten sulfur by using the sulfur foam generated in the desulfurization process as raw material. The more advanced and representative processing devices are as follows: [0003] The patent number applied by Anshan Iron and Steel Group Corporation is ZL 97114485.0, which is an invention patent named "Method and Device for Producing Molten Sulfur from Sulfur-Containing Solution". After heat exchange in the heat exchanger and then heated to the melting sulfur temperature by another heat exchanger, the liquid molten sulfur with high density will settle to the sulfur storage section...

AI Technical Summary

Problems solved by technology

This process realizes continuous operation and improves the efficiency of sulfur melting, but there are still the following problems in production practice: due to the high operating temperature of the heat exchange section adjacent to the heating section, the temperature of the clear liquid discharged from the heat exchange section is relatively high, and the temperature of the heat exchange section is relatively high. The corrosion resistance period is relatively short, and its heat exchange area is relatively large, resulting in relatively large equipment weight and high cost

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