Will samples containing alcohol explode when dried in a vacuum oven?

The materials produced by many enterprises contain volatile and explosive gas molecules such as alcohol and methanol. For such materials, it is better to use a vacuum Drying Oven, which can collect all harmful and explosive gases after production. Then use Whether such materials will explode in a vacuum Drying Oven, we analyze from several points.

Search the Internet for "will drying alcohol-containing samples explode in a vacuum Drying Oven", and you can find many different answers. Some say it may explode, some say it is impossible to explode, and some give different opinions. Based on the answers from netizens and our experience, we will talk about this issue from the following points.

First of all, we have to determine the flammable point of the gas. If the drying temperature does not even reach the flammable point, how can it explode. The flammable point of ethanol with a concentration of 100% is 75 degrees Celsius, and the lower the concentration of ethanol mixed with water, the lower the ignitable point. Generally, the free ethanol volatilized during the drying process can be regarded as 100% concentration, so its flammable point is 75 degrees Celsius. As long as we set the temperature of the vacuum Drying Oven to 75 degrees Celsius, there will be no explosion.

The condition of the explosion needs objective conditions to happen. Air is the objective condition factor to support the occurrence. To be precise, it is oxygen. The air in the vacuum drying box is thin. As long as the vacuum is vacuumed to a certain extent, the air inside is not enough There is a chemical reaction with ethanol, so you don't have to worry about it exploding.

Then some people say that it is okay for me to set the temperature above 75 degrees Celsius, it is better not to do this, first of all, the effect is not obvious, and it may increase uncertain objective factors. Theoretically, it is possible to experiment, but the operation does not guarantee the possibility of errors in the operation of employees. Some netizens said that the ethanol can be almost evaporated first, and then the temperature can be increased. This method can still be tried.