Desulfurization anddesorption system and use method

Abstract

The invention relates to a desulfurization and desorption system and a use method. The desulfurization analysis system comprises a washing module, a desulfurization module and a desorption module. The washing module comprises a washing tower and a washing tank, the washing tower is communicated with the washing tank, and the washing tank is communicated with the washing tower through a washing circulating pump. The desulfurization module comprises a desulfurization tower and a rich liquor tank, the desulfurization tower comprises an upper alkali washing layer and a lower desulfurization layer, the desulfurization layer is communicated with the water scrubber, the desulfurization layer is communicated with the rich liquor tank through a rich liquor pump, the alkali washing layer is communicated with an alkali liquor tank, and the alkali liquor tank is communicated with the alkali washing layer through an alkali liquor pump. The desorption module comprises a desorption tower and a hot water reboiler, the rich liquor tank is communicated with the desorption tower through a desorption feeding pump, the desorption tower is communicated with the desulfurization layer through a barren liquor pump, and the hot water reboiler is arranged at the outer bottom end of the desorption tower and is communicated with the desorption tower through a pipeline. The desorption tower is communicated with a vacuum condensate tank through a vacuum pump module, and the vacuum condensate tank is communicated with the rich liquor tank through a vacuum condensate pump. The desulfurization effect is stable, the desulfurization efficiency is high, and the desorption effect is good.

Description

technical field [0001] The invention relates to the technical field of desulfurization, and more particularly, to a desulfurization analysis system and a method of use. Background technique [0002] In the production of coke oven gas, the generated coke oven gas will have other impurities, such as sulfur-containing acid gas, so the coke oven gas must be desulfurized and purified before it can be supplied to the subsequent process. The current desulfurization treatment of coke oven gas generally needs to go through the ammonium sulfate process, the final cooling process, the benzene washing process, the water washing process and the desulfurization process. Most of the oil impurities are washed off, and then enter the desulfurization process. In the desulfurization tower, the circulating desulfurization liquid absorbs sulfuric gas (such as hydrogen sulfide) to become the circulating desulfurization rich liquid, and the circulating desulfurization rich liquid is precipitated i...

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Problems solved by technology

[0003] However, the existing desulfurization analysis system has the following problems: the circulating desulfurization liquid is dark and turbid, oily, and the density of the alkali washing layer of the desulfurization tower is difficult to control, resulting in large fluctuations in the desulfurization effect and low desulfurization efficiency; the analysis effect of the desulfurization tower is poor; the operation cycle of the vacuum pump short

With the increasingly stringent environmental protection requirements, when the desulfurization effect of the existing desulfurization analysis system is unstable, it is easy to have the problem that the emission of hydrogen sulfide is higher than the environmental protection requirements

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