High-temperature slag economizer

Abstract

The invention discloses a high-temperature slag economizer in the field of acid making equipment. The high-temperature slag economizer comprises a shell consisting of an upper shell, a lower shell anda heat exchange section cylinder body; the top part of the upper shell is provided with a slag inlet; the bottom of the lower shell is provided with a slag outlet; an upper tubeplate is arranged between the upper shell and the heat exchange section cylinder body; a lower tubeplate is arranged between the lower shell and the heat exchange section cylinder body; a plurality of heat exchange tubes are arranged between the upper tubeplate and the lower tubeplate; a water inlet and a water outlet are also arranged on the heat exchange section cylinder body; the centers of the upper tubeplate and the lower tubeplate are provided with central tubes; the upper end of the central tube is provided with a cylindrical central supporting seat; the side of the central supporting seat is provided with apluralities of axial grooves; the upper end of the central supporting seat is horizontally provided with a disc-shaped feed divider; the periphery of the heat exchange tube is provided with a ring ofbypassing tubes; the inside diameter of the heat exchange tube is less than that of the bypassing tube; the inside of the central tube is provided with a signal tube; and the lower part of the signaltube extends to the outside of the lower shell. The high-temperature slag economizer solves the problem that slag agglomerates and blocks the heat exchange tube, and permits the agglomerated slag topass through the bypassing tube; and the device utilizes residual heat in the manufacturing industry of sulfuric acid to produce low-pressure steam and hot water, thereby saving fuel.

Description

technical field [0001] The invention relates to a slag cooling device in the acid making industry, in particular to a high-temperature slag heat recovery device. Background technique [0002] In the prior art, there is a high-temperature slag heat exchanger, which mainly includes an upright shell, and the shell is composed of an upper shell at the top, a lower shell at the bottom, and a heat exchange section between the upper and lower shells. There is a slag inlet on the top of the upper shell, a slag outlet on the bottom of the lower shell, an upper tube plate is installed horizontally between the upper shell and the heat exchange section cylinder, and the lower shell and the heat exchange section cylinder There is a lower tube plate horizontally between the upper tube plate and the lower tube plate, and a number of heat exchange tubes with openings at both ends are erected between the upper tube plate and the lower tube plate. The cavity on the outside of the heat exchan...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-temperature slag economizer to solve the problem of agglomerated slag blocking the heat exchange tube

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