液硫脱气与克劳斯尾气处理

采用三氧化二铝或二氧化硅固体催化剂进行的最新实验室研究表明,H2Sx先在催化剂表面的碱性位分解为H2S,然后被吹扫气从液硫中驱除出去.由于H2S从气相返回液相的传质是一个有限的过程,从理论上讲,这预示着可利用克劳斯尾气作为吹扫气.试验还揭示,在涂有三氧化二铝的堇青石上,脱气期间尾气中约60％的H2S和SO2转化为元素硫.这预示着(例如)可在硫冷凝器管内衬入涂有三氧化二铝的堇青石管,以在脱气的同时提高总转化率.

Liquid sulphur degassing and Claus tail gas treatment

New research in laboratories using solid catalysts based on alumina or silica showed that the solid acts first to decompose H₂S_x and the sparge gas then drives the released H₂S from the liquid.Mass transfer of H₂S from the gas phase back to the liquid is a limited process,which,in theory,suggests that Claus tail gas could be used as the sparge gas.The experiments also revealed that approximately 60%conversion of the H₂S and SO₂ in the tail gas to elemental sulphur occurred over alumina coated monolith tubes during degassing.It was suggested that a concentric alumina coated tubes,for example,could be fitted inside the sulphur condenser to increase overall convention while degassing.