In order to solve the problems of the precipitation method for hardness removal,such as low removal rate,scaling of rotating equipments,high dosage of chemical agents,high cost and large energy loss,the ion exchange technology was used to remove the hardness from high-temperature coal gasification water,and the hardness removal effects of different ion exchange resins were investigated.The results showed that the T42 ion exchange resin had the best hardness removal performance and the simplest regeneration conditions.The results of dynamic adsorption experiment showed that the hardness removal rate could reach over 99%,and the breakthrough point could reach over 110 BV by the selected resin.In addition,there was no obvious change on the hardness removal rate after six adsorption-regeneration cycles.
关键词
煤气化水/除硬/吸附/离子交换树脂
Key words
Coal gasification water/Remove of hardness/Adsorption/Ion exchange resin
维普
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