Cooling device for performing forced air cooling with sulfur dioxide gas

Abstract

The invention relates to a cooling device for performing forced air cooling with the sulfur dioxide gas. The cooling device comprises a cooler and an air blower; the top of the cooler is provided with two sulfur gas chambers, one of the sulfur gas chamber is connected with a gas feeding pipe for inputting the sulfur gas to be cooled, and the other sulfur gas chamber is connected with an output pipe for outputting the sulfur gas cooled by the cooler; the air blower is connected with the cooler through an air feeding pipe, and the side, opposite to the air feeding pipe, of the air blower is provided with a tail gas discharging pipe for discharging the cold air subjected to heat exchange; the bottom of the cooler is connected with a first-stage ash precipitation chamber and a second ash precipitation chamber which are arranged side by side and connected in series, and the sulfur gas to be cooled in one of the sulfur gas chambers passes through the cooler, the first-stage ash precipitation chamber and the second ash precipitation chamber in sequence and then returns into the cooler to be cooled. The cooling device has a longer service life and higher reliability, ash slag and acidic materials in the ash precipitation chambers can be removed in real time, and the phenomenon of corrosion is reduced.

Description

technical field [0001] The invention relates to the field of temperature reduction and cooling, in particular to a sulfur gas forced air cooling cooling device. Background technique [0002] At present, during the production process of the sugar factory, the squeezed cane juice contains a large amount of non-sugar impurities, and it is necessary to add a clarifying agent to remove the impurities or pigment substances to obtain a clean sugar juice solution. Sugar factories usually use CaSO 3 Precipitation particles remove impurities by precipitation, then it is necessary to use SO 2 with Ca(OH) 2 The reaction produces CaSO 3 Precipitation, SO 2 The gas is obtained by burning sulfur and air in a sulfur-burning furnace, and the temperature is generally above 300°C. If no cooling treatment is performed, during the sulfur fumigation and neutralization process, SO 2 The gas absorption rate will be significantly reduced, and more SO will overflow from the reaction box 2 Gas, ...

AI Technical Summary

Problems solved by technology

This kind of cooler has many disadvantages: the main reason is that the corrosion speed is fast, the life is short, and the maintenance cost is high. Generally, it will be corroded and perforated after only two years of use. Forced shutdown processing, seriously affecting production

The main reason is that the gas cooled at high temperature also contains water vapor and SO 3 After cooling down, water vapor will combine with SO 2 or SO 3 Formed acid accumulates at the bottom of the pipe, if it cannot be cleaned out in time, the pipe will be corroded

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