Intensified heat-exchange device for heat-exchanger

Abstract

A heat exchanger intensive heat exchanger rig which belongs to heat exchanger field, is especially suitable for checker brick made of refractory which is used in regenerator of hot blast stove duringblast furnace ironmaking production. The apparatus includes pipe heat exchanger and intensive heat exchanger rig, whose characteristic is that the intensive heat exchanger rig is formed of single augertype or several vane type whirlpool device corresponding to flowing medium in pipe, and installed distantly on axial direction of the hole in the heat exchanger, its radial width W is 0.2-1.0R, angleof swing alpha is 0-18deg.C , axial spacing is 8-48R and the end of vane is streamline form. The invention is used as hot blast stove checker brickmaking whose heat transfer coefficient is raised totimes of 1.7-3.5, beat exchange efficiency increasing notably, saving coke and reducing energy cost, and increasing both quantity and quality of pig iron production.

Description

technical field [0001] The patent of the invention relates to a heat exchanger strengthening heat exchange device, which relates to the field of heat exchangers, in particular to a tubular heat exchanger, and is especially suitable for checker bricks made of refractory materials in the regenerator chamber of a hot blast stove in blast furnace ironmaking production. Background technique [0002] In industrial production and daily life, heat exchangers can be seen everywhere. As a heat exchanger, the higher the heat exchange efficiency, the better. To achieve this purpose, methods such as increasing the medium flow rate, the degree of disturbance and the heat transfer area are often used. The tube heat exchanger transfers heat by absorbing and releasing heat through the medium (gas, liquid) flowing in the tube. Since the flow medium mostly flows in a single straight line in the tube, the closer to the boundary surface, the relatively smaller flow velocity, forming a thicker ...

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Problems solved by technology

[0003] However, the improvement of the checker brick structure of the hot blast furnace is mainly to increase the pipeline passage of the medium flow in the checker brick, thus increasing the heat exchange area of ​​the checker brick and reducing the wall thickness, which has positive significance for improving the heat exchange efficiency, but it does not The condition that the flowing medium flows in a single straight line in the tube hole is not changed, and the influence of the flow condition of the medium in the tube hole on the heat exchange efficiency is ignored

Therefore, the heat exchange efficiency is still unsatisfactory and needs to be further improved on this basis.

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