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On the Gas Purification from Low SO2 Concentration

机译：从低SO2浓度净化气体

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The solid fuel combustion in the thermal power plants, which use sulfur-rich fuels, poses the problem of sulfur dioxide removal from the waste gases. This problem is complicated by the fact, that it is required to purify huge amounts of gas with low SO2 concentration. The huge gas amounts need big size apparatuses, which is possible to be decreased if the absorption rate is maximal. The theoretical analysis of the methods and for purification of waste gases from SO2, using two-phase absorbent (CaCO3 suspension) shows, that the process is practically a physical absorption and the mass transfer resistances in the gas and liquid phases are 44% and 56%, respectively. In these conditions a new patent is proposed, where the process of optimization is realized in three zone columns, where the upper zone is a physical absorption in gas-liquid drops system, the middle zone is a physical absorption in liquid-gas bubbles system and the chemical reaction takes place at the bottom of the column. The convection-diffusion type of models permits to create the average concentration models and give quantitative description of the absorption processes.
机译：火力发电厂中的固体燃料燃烧（使用富含硫的燃料）构成了从废气中去除二氧化硫的问题。该问题由于需要净化大量具有低SO2浓度的气体而变得复杂。大量的气体需要大尺寸的设备，如果吸收率最大，则有可能减少。使用两相吸收剂（CaCO3悬浮液）对方法和从SO2净化废气的理论分析表明，该过程实际上是物理吸收，气相和液相的传质阻力分别为44％和56 ％， 分别。在这种情况下，提出了一项新专利，其中在三个区域的列中实现了优化过程，其中上部区域是气-液滴系统中的物理吸收，中间区域是液-泡系统中的物理吸收，化学反应发生在塔底。对流扩散类型的模型允许创建平均浓度模型并给出吸收过程的定量描述。

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