RH refining furnace vacuum pumping system and using method thereof

A vacuum pumping and refining furnace technology, applied in the field of RH refining furnace vacuum refining process, can solve the problems of high energy consumption, limited applicability, and large consumption of steam medium, so as to improve the pumping rate, increase the service life, shorten the The effect of gas time

Active Publication Date: 2014-12-24
WISDRI ENG & RES INC LTD
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Problems solved by technology

This type of air extraction equipment has simple structure and low maintenance cost, but it needs to consume a large

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  • RH refining furnace vacuum pumping system and using method thereof

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] Such as figure 1 An embodiment of the present invention provides a vacuum pumping system for a RH refining furnace, including a vacuum chamber system 1 , a pumping pipeline 16 and a vacuum main valve 2 arranged on the pumping pipeline 16 . The exhaust pipeline 16 is sequentially connected with the first-stage steam pump 3, the second-stage steam pump 4, the third-stage steam pump 5, the first-stage condenser 6, the parallel-connected 4a-stage steam pump...

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Abstract

The invention relates to an RH refining furnace vacuum pumping system and a using method thereof. A steam pump group is combined with a liquid ring pump; the liquid ring pump and a fifth stage steam pump are arranged in a parallel mode; a waste gas treatment device is arranged in front of an air inlet of the liquid ring pump; a third stage condenser is connected with a steam and water separation device. According to the RH refining furnace vacuum pumping system and the using method thereof, the structure is simple, the dependence of the operation of an RH refining furnace on the steam can be reduced, and the molten steel treatment cost can be reduced; the gas pumped through the liquid ring pump can be purified due to the waste gas treatment device, the working environment is good, the stability is high, the working efficiency can be improved, and the service life can be extended; the system exhaust efficiency is high due to the steam and water separation device and accordingly the working efficiency of the RH refining furnace vacuum pumping system can be further improved.

Description

technical field [0001] The invention relates to the field of RH refining furnace vacuum refining technology, in particular to a RH refining furnace vacuum pumping system and an application method thereof. Background technique [0002] With the development of the economy, the user's demand for steel products is increasing, and the requirements for steel quality are also increasing. The RH vacuum refining process has been available for more than 50 years since it came out in 1959, and it has become an effective means to broaden and improve the quality of steel products. [0003] In the 21st century, many domestic steel mills have successively established RH vacuum refining devices with different equipment types and processing capacities. The selection of the air extraction system is mainly a steam jet pump. This air extraction system mainly uses the waste heat steam from the converter or the external network boiler steam as the air extraction medium, and achieves the vacuum r...

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Application Information

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IPC IPC(8): C21C7/10
Inventor 杨锦李智成剑明许海虹
Owner WISDRI ENG & RES INC LTD
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