The Production Process Optimization of Sodium Methylate with Sodium Hydroxide and Methanol
The current preparations of sodium methylate are mainly two methods of sodium and sodium hydroxides.
At present, there are mainly two production methods: metal sodium method and alkali method. Sodium metal method refers to solid bulk or molten metal sodium reacts directly with lower alcohols to produce sodium alcohol and hydrogen
The advantages of sodium methoxide are high purity, simple process, low equipment cost and unsafe, the generated hydrogen is very easy to explode, and the raw metal sodium is very active and expensive.
Alkali Method
It refers to the reaction of methanol and sodium hydroxide to produce sodium methoxide and water. The advantage of this method is that the raw material is convenient
The utility model has the advantages of easy availability, low cost and safe operation. Its reaction is reversible, but it is very easy to cause reverse reaction
It should not be complete. There are often impurities such as sodium hydroxide in the product, so it is not necessary for alkali production
Remove the water and add catalyst to make the reaction move towards the product as far as possible.
Distillation and other separation operations shall be carried out to reduce impurities as much as possible.
Sodium process is simple, high conversion rate, but too dangerous. Alkaline process is low conversion rate because of its strong reversibility while needed to continuously remove the water of reaction, but it is low cost. The actual production is produced by reactive distillation apparatus. The major influence factors of the reaction are reaction temperature, mass ratio of methanol and sodium hydroxide, and reaction time. Using single -factor experiment method, the law of reaction with the changes of the influence factors was studied. Experimental results showed that the higher the mass fraction of sodium methylate was obtained, the higher temperature increases, the greater the mass ratio of methanol and sodium hydroxide , the longer the reaction time. The optimal reaction conditions were determined.