液氨脱水的方法及装置

By using a combination of evaporators and multifunctional adsorption beds in a liquid ammonia dehydration unit, the problem of the moisture content in industrial liquid ammonia being difficult to reach the optoelectronic grade has been solved, achieving efficient and low-energy ammonia purification that meets the high purity requirements of the semiconductor field.

CN119909402BActive Publication Date: 2026-07-17CHINA PETROLEUM & CHEMICAL CORP +2

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2023-10-31
Publication Date
2026-07-17

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Abstract

本发明涉及电子化学品制备技术领域,公开了一种液氨脱水的装置和方法,其中,该装置包括:蒸发罐和吸附床;其中,所述蒸发罐的上部为丝网填料,下部为翅片式换热管;其中,所述丝网填料的高度为300‑600mm;其中,所述换热管水平面的最下端离所述蒸发罐底部的距离为300‑600mm;所述换热管水平面的最上端离液氨液面的距离为100‑200mm;其中,所述吸附床由承担吸附、再生、冷却三种功能的至少3个吸附床组成。本发明采用特定工艺方法和装置,以工业液氨为原料,经加热预处理和吸附处理,在不引入额外杂质的同时,进一步脱除液氨中的水分,制备得到的含水量低于2×10‑7(体积分数)的高纯氨气,满足光电子级氨气的标准要求,同时脱水操作工艺简便、能耗低、效率高。
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