Manufacturing Method of Nitrosyl Sulfuric Acid
Nitrosyl Sulfuric Acid is an important raw material for the production of chemicals, which is widely used in the fields of pharmaceuticals, pesticides, dyes and so on. In this article, we will introduce the manufacturing method of nitrosyl sulfuric acid, including raw material preparation, reaction process, post-treatment and other aspects.
I. Raw material preparation
The main raw materials for manufacturing nitrosyl sulfuric acid include sulfuric acid, nitric acid and sodium nitrite. Among them, the ratio of sulfuric acid and nitric acid is 3:1, and the amount of sodium nitrite is 10% of the total mass of sulfuric acid and nitric acid.
II. Reaction process
1. Sulfuric acid and nitric acid were added into the reactor proportionally and stirred well.
2. Add sodium nitrite slowly under stirring, control the dosing speed so that the reaction temperature does not exceed 50℃.
3. After the addition is completed, continue to stir the reaction for 1 hour to ensure that the reaction is complete.
4. After the reaction, cool the reaction solution to room temperature.
3. Post-treatment
1. Pour the reaction solution into the crystallization kettle and leave to crystallize.
2. When the crystallization is complete, centrifuge to separate and obtain nitrosyl sulfate crystals.
3. Wash the crystals with a small amount of water and dry to get the finished nitrosyl sulfuric acid.
4. Precautions
1. During the manufacturing process, the speed of adding materials should be strictly controlled to prevent the reaction from being too intense, which may cause safety accidents.
2. In the crystallization process, keep proper temperature and stirring speed to promote crystal growth.
3. When centrifugal separation, keep the appropriate speed and time to avoid crystal breakage.
V. Yield and purity
The yield of this manufacturing method is about 85%, and the purity can be more than 98%.
VI.Waste treatment
The waste generated during the manufacturing process mainly includes waste acid and waste water. These wastes should be neutralized, precipitated, etc., and then discharged only after meeting environmental standards.
VII. Safety and Protection
During the manufacturing process, safety operation procedures should be strictly observed, protective gear should be worn to avoid contact with skin and eyes. At the same time, ventilation facilities should be set up to maintain air circulation in the workshop.
In short, the manufacturing method of nitrosyl sulfuric acid requires strict control of the process parameters and operating procedures in each link to ensure product quality and production safety. Meanwhile, waste disposal and safety protection are also important aspects that should not be ignored, and relevant regulations and standards should be strictly observed.
