Fatty acid methyl esters were prepared by esterification in a fixed bed reactor from methanol and fatty acids in palm oil deodorizer distillate (PODD) using a cation exchange resin as catalyst.

以强酸性阳离子交换树脂为催化剂，经过自制的固定床反应器，使棕榈油脱臭馏出物(PODD)中的脂肪酸与甲醇起酯化反应，合成脂肪酸甲酯。

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The working process of resin bed and working principle of acid purification unit and flowchart are described particularly. Making comparison of acid consumption of using it before and after.

详细介绍了树脂床工作过程和酸净化装置的工作原理及工艺流程，对酸净化装置投入前后的酸耗量做了对比。

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Another problem with demineralizers is that small resin particles are often dislodged from the bed and enter the water stream.

用脱矿质器的另一个问题是，小的树脂粒常常逸出树脂床而进入水流。

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