A waste sulfur low-temperature melting and filtration device and its working method

Abstract

This invention discloses a low-temperature melting and filtering device for waste sulfur and its operating method. The device includes a crushing device, a screening device, a conveying device, and a sulfur melting kettle connected in sequence. The sulfur melting kettle is equipped with a heating device and a cooling device. The kettle lid is equipped with a feed valve, a nitrogen filling valve, a tail gas valve, a pressure gauge, a level gauge, a first thermometer, and a pressure relief valve. The nitrogen filling valve is connected to a nitrogen source through a gas pipe. The tail gas valve is connected to an absorption tower through a pipeline, and a first exhaust pump is installed on the pipeline. The bottom of the kettle has a discharge hole. The pressure relief valve is connected to a waste liquid collection tank externally through an overflow pipe. The top of the conveying device is connected to a feed auger, the top of the feed valve is connected to a temporary storage cylinder, and the top of the temporary storage cylinder is connected to the feed auger. The bottom of the kettle has a hinged discharge gate that can seal the discharge hole. The discharge gate has a liquid extraction hole, the top of which has a filter screen, and the bottom of which is connected to a discharge valve. The device and method of this invention have the characteristics of high thermal efficiency and sufficient safety redundancy.

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