Circulation cooling device for chute of soda recovery furnace

Abstract

The invention discloses a circulation cooling device for a chute of a soda recovery furnace. A cooling water channel is provided with a desalted water inlet, a drain outlet, an overflow vent, a sealing water pipe and a liquid level meter interface, wherein the sealing water pipe is inserted below the liquid surface of the cooling water channel, the liquid level meter interface is connected with aliquid level transmitter; a desalted water outlet at the bottom of the cooling water channel is connected with a circulation cooling water pipe, the outlet of a frequency variable water pump is connected to a cooling water inlet of a heat exchanger, a cooling water outlet of the heat exchanger is connected to the water inlet of a chute water jacket at the lower end of the chute water jacket by virtue of the circulation cooling water pipe, the water outlet of the chute water jacket at the upper end of the chute water jacket is connected to the sealing water pipe of the cooling water channel, the desalted water inlet is arranged at the top of the cooling water channel, the desalted water pipe is used for introducing the desalted water into the cooling water channel by virtue of the desaltedwater inlet, and the desalted water pipe is provided with a regulating valve. The circulation cooling device disclosed by the invention has simple structure, low operation energy consumption, less water discharge and automatic operation; and a crack of the chute water jacket can be timely alarmed, and an accident is prevented.

Description

technical field [0001] The invention relates to the technical field of equipment related to recovery of alkali by waste liquid combustion method, in particular to a circulating cooling device for the chute of a special alkali recovery boiler (hereinafter referred to as alkali recovery furnace), which is suitable for cooling the alkali recovery furnace with desalinated water circulation the chute. Background technique [0002] The cooling of the alkali recovery furnace chute is an important link to ensure the normal combustion of the alkali recovery furnace. The temperature of the melt produced by combustion in the alkali recovery furnace and flowing out through the chute is as high as about 900°C, and contains highly corrosive sulfides. In order to prevent the metal of the chute from overheating and to ensure that the chute can better resist high temperature corrosion and mechanical erosion, a cooling device is essential. [0003] So far, the relevant research achievements...

AI Technical Summary

Problems solved by technology

[0006] ①Long-term use of clean water cooling can easily cause fouling of the water jacket of the chute and decrease the heat transfer effect;

[0008] ③Warm water generated after cooling is discharged to the ditch, resulting in waste of water resources. The amount of water used for cooling each chute: ~6.5m 3 / h

[0013] ①The equipment composition is more complex, the initial investment is larger, and the equipment installation is more complicated;

[0014] ② High energy consumption during operation

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