Seeking expert advice on issues with the cold hydrogenation process
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One additional question: Chlorohydrination generates slurry and liquid waste with high boiling points; what are some safer methods or recommendations for disposing of them? What are the types of static equipment used for chlorohydration? Which devices fall under medium-voltage equipment? Pressure limits for high, medium, and low pressure, as well as the correspondence between pound units and MPa
What are the differences between ppm (W), ppm (V), and ppm (a)? What does the pH value mean?
What are the differences between ppm (W), ppm (V), and ppm (a)? What does the pH value mean?
PPM is an abbreviation for parts per million, which means a certain portion per million; in other words, it denotes a fraction of one in a million, or the parts per million ratio. PPM represents the same thing as a percentage (%), except that its value is larger than that of a percentage. When expressing the impurity content in ppm, there are ppm(w), ppm(v), and ppm(a). ppm(w) refers to the concentration calculated on a weight (mass) basis, ppm(v) refers to the concentration calculated on a volume basis, while ppm(a) refers to the concentration calculated based on the number of atoms. pH value, also known as the hydrogen ion concentration index, is a scale of the activity of hydrogen ions in a solution; it is what is generally used to measure the acidity or alkalinity of a solution. This concept was proposed in 1909 by the Danish biochemist Søren Peter Lauritz Sørensen. p stands for the German word Potenz, which means strength or concentration, while H represents hydrogen ions (H+). The pH value is a number ranging from 0 to 14; when the pH is 7, the solution is alkaline, and when pH equals 7, the solution is neutral.