Blast furnace cooling water temperature adjustment device and control method in oven state

Abstract

The invention discloses a blast furnace cooling water temperature adjusting device in an oven state and a control method. The device comprises a steam pipe; one end of the steam pipe is connected to a pipeline of an exhaust pipe at the top of a blast furnace cooling water degassing tank, and the other end is connected with a steam source; the steam pipe is provided with a pressure reducing valve, a pressure meter, a manual stop valve, a blow-down valve, a flow meter, a manual adjusting valve and a bypass pipeline and a bypass valve connected with two ends of the manual adjusting valve in sequence; a control valve is arranged in a pipeline of an exhaust pipe at the upper part of the connecting place of the steam pipe and the exhaust pipe; a steam guide pipe is arranged in the degassing tank, is opened at the upper end, and is connected to an outlet end of the exhaust pipe at the top of the degassing tank; the steam guide pipe is deeply inserted in the lower part of the degassing tank; multiple through holes are peripherally formed in the wall of the steam guide pipe; the through holes are spirally downwards inclined in the peripheral direction of the steam guide pipe; a thermoscope is arranged on a blast furnace cooling wall, and is connected into a cooling water pipe pipeline of the degassing tank; and a controller is electrically connected with a pneumatic adjusting valve, a bypass valve, the flow meter and the thermoscope.

Description

technical field [0001] The invention relates to blast furnace cooling technology, in particular to a blast furnace cooling water temperature regulating device and control method in an oven state. Background technique [0002] The blast furnace hearth structure is mainly composed of furnace skin, cold surface refractory material, cooling wall, expanded ramming material and large carbon bricks. The purpose of the blast furnace oven is mainly to bake and discharge the refractory crystal water in the furnace at high temperature. For the closed circulation system of pure water in the hearth of the blast furnace, in the stage of the blast furnace oven, due to the integrity of the refractory material in the hearth, the oven During the process, the heat in the furnace is transferred slowly to the hot surface of the cooling wall, so it is difficult to discharge the crystallization water of the hearth brick lining in a timely and effective manner to a certain extent. In addition, bec...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a blast furnace cooling water temperature adjustment device and control method in the oven state, which can effectively solve the problems of cold cooling wall, stagnation of crystal water on the hot surface, and poor discharge, thereby ensuring the maximum degree of brick lining in the hearth. of crystal water discharge

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