Heat exchanger for cinder flushing water of blast furnace

Abstract

The invention discloses a heat exchanger for cinder flushing water of a blast furnace, belongs to heat exchange equipment, and in particular relates to heat exchange equipment used for recovering waste heat of high-temperature water with high cinder content. The heat exchanger for cinder flushing water of a blast furnace is characterized in that the two ends of a plate bundle composed of corrugated plates which are welded together are semicylindrical front and rear pipe boxes, the top surface of the plate bundle is provided with an upper cover plate, the bottom surface of the plate bundle is provided with a lower cover sheet, and the two ends of the upper and lower cover plates are provided with closure plates which are connected with the front and rear pipe boxes in a welding manner; the upper and lower cover plates are respectively made of cover plates with access holes through welding, the two sides of the plate bundle are provided with clamping plates and are arranged on a support, the front pipe box is provided with a circulating water inlet, and the rear pipe box is provided with a circulating water outlet; the upper cover plate close to one end of the front pipe box is provided with a cinder flushing water outlet, and the upper cover plate close to one end of the rear pipe box is provided with a cinder flushing water inlet; and the upper and lower cover plates and the clamping plates form a shell, a plate range of the heat exchanger is arranged between the circulating water inlet and the circulating water outlet, and a shell range of the heat exchanger is a cinder flushing water channel. The heat exchanger provided by the invention has the advantages that the heat efficiency is high and the dirt through capacity is strong; and the heat exchanger can be cleaned to remove dirt at any time and is convenient to overhaul.

Description

Technical field [0001] The invention belongs to a heat exchange device, in particular a heat exchange device used to recover the waste heat of high-temperature water with a large slag content. Background technique [0002] A large amount of high temperature slag produced after blast furnace ironmaking is cooled by slag flushing water. During this process, a large amount of slag flushing water with a temperature of 70-85°C can be produced. In order to ensure the recycling of slag flushing water, this part of slag flushing water must be used After sedimentation and filtration, it is introduced into the air cooling tower to cool down and then circulates the slag. A large amount of heat is wasted in vain, which not only wastes energy, but also causes thermal pollution to the environment. [0003] Since the slag flushing water contains a large amount of solid particles and suspended matter, if it is directly used for heating, it will cause large-area siltation and blockage of pipes, val...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiency that the existing heat exchange equipment cannot be applied to waste heat recovery of hot water containing a large amount of solid particles and suspended matter, the present invention provides a blast furnace slag flushing water heat exchanger, which not only Recover the waste heat of slag flushing water, and avoid the blockage of heat exchange equipment caused by solid particles and suspended matter in slag flushing water

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