Method for synthesizing electronic-grade hydrogen chloride

The invention provides a method for preparing electronic-grade hydrogen chloride, which comprises the following steps of: 1) pretreating hydrogen to ensure that the molar fraction of the water content of the hydrogen is lower than 5ppm and the purity of the hydrogen is higher than 99.9995%; 2) pretreating the chlorine gas, so that the molar fraction of the water content of the chlorine gas is lower than 1ppm, and the purity of the chlorine gas reaches 99.9999% or above; and (3) chlorine and hydrogen react in the jacketed graphite synthesis furnace to synthesize hydrogen chloride, and the non-water-based heat-carrying agent is used for cooling the jacketed graphite synthesis furnace. The method is low in investment, low in cost and good in stability, and the prepared hydrogen chloride is high in purity. 本发明提供了一种制备电子级氯化氢的方法，其包括如下步骤：1)对氢气进行预处理，使得氢气含水量摩尔分率低于5ppm，氢气纯度大于99.9995％；2)对氯气进行预处理，使得氯气含水量摩尔分率低于1ppm，氯气纯度达到99.9999％以上；3)在夹套式石墨合成炉使氯气与氢气发生反应合成氯化氢，其中，使用非水基载热剂来冷却夹套式石墨合成炉。该方法的投资低、成本低、稳定性好，制备得到的氯化氢的纯度高。