Ammonia process of desulfurization integral purification device and method for acid gas sulfur recovery tail gas

Abstract

The invention discloses an ammonia process of desulfurization integral purification device for acid gas sulfur recovery tail gas. The device comprises an incinerator, a steam superheater, an afterheat recovery boiler, an air heat exchanger, an air cooler and a desulfurization device. A method for using the device for treating acid gas comprises the following steps of burning the acid tail gas under the condition of 650 DEG C to 1000 DEG C; performing secondary afterheat recovery on the burned high-temperature tail gas; performing heat recovery by the air heat exchanger; performing cooling and temperature reduction to 300 DEG C or lower; performing direct cooling and temperature reduction by the air cooler to 180 DEG C or lower; then, performing desulfurization. The device and the method have the advantages that the high absorption efficiency of high-concentration SO2 in the smoke gas can be achieved; the smoke gas is exhausted in a standard reaching way; the goals of reducing ammonia escape from the sources, blocking the ammonia escape in a process, and reducing the aerosol generation are achieved. Meanwhile, chemical fertilizer ammonium sulfate is produced; the problem of phenomenon of serious outlet smoke gas tailing white smoke of the desulfurization device is solved, so that the harmless treatment is realized.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to an ammonia desulfurization integrated purification device and method for acid gas sulfur recovery tail gas. Background technique [0002] Sulfur dioxide emitted from industrial processes is an important source of acid rain and smog, and acid gas is converted into a large amount of sulfur dioxide after incineration. In order to improve the environmental quality and control the emission of sulfur dioxide, desulfurization treatment is imperative. [0003] In the production process of petroleum, natural gas and coal chemical industry, a large amount of acid gas containing hydrogen sulfide will be produced. The Claus sulfur recovery process is usually used to remove hydrogen sulfide and recover sulfur. In order to ensure that the tail gas is discharged up to the standard, after the conventional two-stage Claus sulfur recovery unit, super or super excelle...

AI Technical Summary

Problems solved by technology

In order to ensure that the tail gas is discharged up to the standard, after the conventional two-stage Claus sulfur recovery unit, super or super excellent Claus, SCOT tail gas retreatment and other processes are installed. Disadvantages such as difficulty

[0004] The sodium

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