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我們在提純土法制得的工业硫酸的生产过程中,发現了操作技术上的一些問題,这些問題在工作过程中已逐步解決,現加以小結分述如下。我們是利用蒸餾法来提純的。为了使土法制得的工业硫酸中所含的亚硫酸、硫代硫酸等杂貭全部氧化成硫酸,加入了0.5％重鉻酸鉀及0.7％高錳酸鉀,在蒸餾过程中第一个发現的問題就是加热的方法。一、加热的方法:开始,我們用一万毫升烧瓶直接加热,可是这样不仅温度难以控制,而且容易发生爆破事故,經过多次試驗,我們改用了老虎灶(开水炉)所用之鉄鍋,在鉄鍋中加入黄砂,再把烧瓶埋在其中(卽砂浴);有如下几个优点:
We have found in the production of industrial sulfuric acid purification of soil produced some problems in the operation of technology, these problems have been gradually resolved in the course of their work, are summarized below are summarized below. We are using distillation to purify. In order to make the industrial sulfuric acid sulfuric acid, thiosulfate and other impurities contained in sulfuric acid are all oxidized to sulfuric acid, adding 0.5% potassium dichromate and 0.7% potassium permanganate in the distillation process of the first hair The problem is the heating method. First, the heating method: At first, we use 10,000 ml flask directly heated, but this is not only difficult to control the temperature, but also prone to blasting accident, after many tests, we use the tiger stove (boiled water boiler) , Adding yellow sand into the pan, then burying the flask in it (sand bath); has the following advantages: