Low-position straight heating machine

Abstract

The invention provides a low-position straight heating machine. The structure of the low-position straight heating machine comprises an evaporator, a condenser and a deaeration device, wherein the evaporator and the condenser are arranged up and down; the evaporator is a horizontal type pressure container, waste water at the middle and high temperature enters the evaporator through a water inlet pipe, is sprayed out downward from a long and narrow nozzle of a spray pipe, flows along a surface of a water spraying tray and downward from the edge of the water spraying tray, and simultaneously is evaporated through flash vaporization; generated vapors enter the condenser through a vapor channel, and residual waste water after the flash vaporization is discharged through a water suction pump; the condenser is a shell tubular heat exchanger, heating circulating water enters a hot water pipe of the condenser, performs heat exchange with vapors outside the pipe through the pipe wall, after the heating circulating water is heated through a few of processes, the heating circulating water flows out from a water outlet pipe; the vapors entering from the vapor channel bypass a baffle plate and flow curvedly and condensate for heat release; and condensation water accumulated at the bottom of the condenser flows out through a condensation water pipe. Besides, an exhaust pipe is arranged above the tail end of the condenser and connected with a vacuum pump, so that non-condensable gas in the condenser is sucked out.

Description

technical field [0001] The invention relates to heat exchange technology, in particular to a low-level direct heat engine. Background technique [0002] my country is already a big country in steel production, and the annual output of steel accounts for 40% of the world's total output. Whether it is steelmaking or ironmaking, a large amount of slag will be produced. Slag is produced along with iron and steel. It is a by-product of iron and steel smelting, and it is also the basic condition for a series of important metallurgical reactions. It directly participates in the physical and chemical reactions and mass and heat transfer processes of iron and steel smelting. It not only affects the output of iron and steel, quality, and is closely related to the consumption of raw materials and energy. [0003] In iron and steel metallurgical furnaces, high-temperature slag at 1400-1500°C is produced. After flowing out through the slag mouth, and then entering the slag flushing lau...

AI Technical Summary

Problems solved by technology

This has caused the entire direct heating machine to be several meters high, which cannot be placed under the usual space conditions of the machine room.

[0012] The working conditions of medium and high temperature wastewater heat exchangers are very different from ordinary heat exchangers. The design method and experience of ordinary heat exchangers cannot be used for medium and high temperature wastewater heat exchangers.

Although the design method and manufacturing process of ordinary heat exchangers are very mature, the scientific design method of medium and high temperature wastewater heat exchangers has not been well solved so far.

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