Method and device for treating liquid sulfur tank tail gas

Abstract

The invention relates to a method and a device for treating liquid sulfur tank tail gas, and in particular provides the method for treating the liquid sulfur tank tail gas. The method comprises the following steps: (a) delivering the liquid sulfur tank tail gas into a heat exchange rotational flow tank provided with a steam jacket, and removing liquid sulfur drops entrained in the tail gas by using a heat exchange and rotational flow separation coupling technology, thereby obtaining a primary purified gas; (b) delivering the obtained primary purified gas into a rotational flow absorbing tower, and washing the liquid sulfur drops and absorbing H2S and SO2 in the rotational flow absorbing tower, thereby obtaining a secondary purified gas; and (c) mixing the obtained secondary purified gas with frog drops sprayed out by an atomizer nozzle arranged in the rotational flow absorbing tower, and then delivering the mixture into a rotational flow absorber arranged in the rotational flow absorbing tower so as to absorb sulfur-containing gases, thereby obtaining a tertiary purified gas. The invention also provides the device for treating liquid sulfur tank tail gas.

Description

technical field [0001] The invention belongs to the field of petrochemical technology and environmental protection, and relates to a method and a device for purifying tail gas of a liquid sulfur tank with low device cost and good environmental benefits. Specifically, the present invention provides a multi-stage desulfurization purification method combining heat exchange swirling flow and swirling flow absorption technology, and a device for implementing the method. Background technique [0002] At present, my country's air pollution is very serious, and sulfur dioxide pollution remains at a relatively high level, which seriously threatens human health. Therefore, in order to strictly control the emission of sulfur dioxide in the atmosphere, the relevant state departments have issued a new standard for comprehensive emission of air pollutants, requiring that the concentration of sulfur dioxide emission from newly built sulfur plants should be less than 400mg / Nm 3 , the emiss...

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Problems solved by technology

[0011] The present invention provides a novel liquid sulfur tank tail gas treatment method and device, which solves the problem that liquid sulfur droplets are easy to solidify and block pipelines and trays in the liquid sulfur tank tail gas treatment in the prior art. The problem that the amine hydrogen sulfide removal process cannot be used, the device cost is low, and the environmental benefit is good

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