System and method for supplying steam to RH refining furnace

Abstract

The invention discloses a system for supplying steam to an RH refining furnace. The system comprises a self-produced steam supply pipeline and an external grid steam supply pipeline, wherein the self-produced steam supply pipeline comprises a plurality of converter steam drums, a heat accumulator group, a regulating valve group, a moisture removal drum and a temperature sensor. The specific technical scheme of a method for supplying the steam to the RH refining furnace is as follows: 1, in the absence of converters or under the condition that only one converter is used for production, regulating valves perform automatic regulation and quick switching, so that the pressure of the steam can quickly meet the production requirement; 2, under the condition that two or three converters are used for cross production, tests prove that the pressure of the steam supplied by an internal grid to the RH furnace can completely meet the production requirement; 3, a regulation and control scheme is adopted. According to the system and the method, the converter steam can be reliably and directly supplied to the RH furnace, so that the pressure of the steam supplied to the RH furnace is stable and reliable; the problem that the steam carries moisture is solved, and the high-quality converter steam is used by the RH furnace; the system is widely applicable to small and medium-sized converters, and the equipment investment cost is low.

Description

Technical field [0001] The invention relates to the field of metallurgical steelmaking, in particular to a system and method for supplying steam to the RH furnace by directly using the waste heat steam produced by the converter as the steam power source of the vacuum pump system of the RH refining furnace. Background technique [0002] RH refining furnace is a secondary refining process equipment for molten steel used to produce high-quality steel. One of its core systems is the vacuum pump system, which usually uses water ring pumps and steam jet pumps. [0003] Vacuum system requirements for steam: (1) The steam pressure must be stable and not lower than the working pressure of the vacuum pump; (2) The water content of the steam must be low and the water content must not fluctuate greatly. Usually the steam used in the RH furnace is superheated steam from a thermal power plant. [0004] The waste heat steam produced by small and medium converters has the characteristics of discon...

AI Technical Summary

Problems solved by technology

The low-pressure steam produced by the converter itself and the external network steam are fully mixed and dehydrated in the dewatering steam drum, which can solve the problem of the amount of water carried by the converter's self-produced steam and ensure that the RH furnace can use high-quality converter steam

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