A method for rapid cooling of high-temperature flue gas

Abstract

The invention discloses a high-temperature flue gas quenching method. The high-temperature flue gas quenching method comprises the following steps that 1, flue gas is guided; 2, liquid metal is primarily dispersed; 3, secondary dispersion is carried out on the liquid metal, 4, the liquid metal is recycled; and 5, the flue gas is discharged. The high-temperature flue gas quenching method can guarantee the normal temperature of a high-temperature flue gas quenching experiment.

Description

technical field [0001] The invention relates to the field of cooling for industrial production, in particular to a cooling method for high-temperature flue gas. Background technique [0002] In industrial production, many fields involve the use of temperature to control the progress of flue gas reactions. [0003] Taking the production of acetylene as an example, the temperature for terminating the reaction is 1300°C, which requires the flue gas temperature to be lowered to an appropriate range in the heat exchange furnace. At present, this process is realized by spraying into quenching water, however, there are following problems in this way: [0004] 1. First of all, a large amount of quenched water injected into water vapor causes changes in the composition of the flue gas, causing a sudden increase in the flue gas flow rate, which not only affects the quality of acetylene, but also increases the processing pressure of downstream equipment. Corrosion caused by equipment...

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Problems solved by technology

[0004] 1. First of all, a large amount of quenched water injected into water vapor causes changes in the components of the flue gas, causing a sudden increase in the flue gas flow rate, which not only affects the quality of acetylene, but also increases the processing pressure of downstream equipment. Corrosion caused by equipment is also more serious;

[0005] 2. Secondly, the water vapor formed by the injected quenching water is finally emptied, and a large amount of latent heat contained in this period cannot be recovered, resulting in a large waste of energy;

[0006] 3. Again, the water consumption caused by this is not a small figure, which increases the production cost of chemical enterprises but cannot produce any positive and beneficial effects

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