【Alkylation】Factors affecting the dry point of alkylated oils
Thread Content
The last edit to this post was made by Xiao Gong 1985 on 2016-3-3 at 17:25. What are the reasons for the high dry point of alkylated oil? What level should isopentane be controlled at in the raw materials, and what is typically the dry point of alkylated oil in your facility?
The main reaction in the alkylation process should be a reaction between an alkene and an alkane, so the number of carbon atoms does not increase much. If there is a small amount of dienes, especially conjugated dienes, cyclization reactions occur easily to form cycloolefins; these cycloolefins then undergo alkylation with an alkane, resulting in compounds with higher boiling points. Additionally, alkylation after diene polymerization, as well as alkylation after copolymerization with two olefins, can also result in the formation of high-boiling components. First, it is necessary to control the issue of olefins in the raw materials; second, the content of dienes in the raw materials must be strictly controlled. Additionally, dienes are also important chemical raw materials that should be extracted for use as rubber ingredients.
Controlling dienes, as well as the issue of reaction depth – our company sets the dry point at 205℃
How to control the reaction depth effectively? Does the rate of the acid cycle have a significant impact on the reaction depth?
There are mainly two factors that affect the dry point of alkylated oil. The first is the content of dienes and impurities in the raw materials; high levels of these substances lead to increased acid consumption and a decrease in acid concentration. As the acid concentration drops, the likelihood of side reactions increases, and the resulting by-products affect the dry point of the alkylated oil. Secondly, it involves calculating the change in concentration under conditions of stable raw material properties; when the acid concentration drops to a certain level, side reactions increase, which leads to an increase in the dry point of the product.
The dry point of alkylated oils is primarily influenced by the raw materials; secondly, the operating conditions of the alkylation reactor also have an impact. Other factors have a much smaller influence and can be ignored. As mentioned above, dienes play a role in preventing the polymerization of olefins. As some people have said before, no matter how skilled one’s operation techniques may be, overheating can still lead to polymerization reactions. If you don’t understand the underlying principles, then no matter how good your skills seem, what you’re doing is just random and ineffective.
To achieve high results, it mainly depends on your reaction. Low acid concentration, low alkane ratio, and increased side reactions are all factors that affect the dry point. Our dry point control is 195-205
It mainly depends on the reaction, raw materials, and impurities.
There are mainly two factors that affect the dry point of alkylated oil. The first is the content of dienes and impurities in the raw materials; high levels of these substances lead to increased acid consumption and a decrease in acid concentration. As the acid concentration drops, the likelihood of side reactions increases, and the resulting by-products affect the dry point of the alkylated oil. Secondly, it involves calculating the change in concentration under conditions of stable raw material properties; when the acid concentration drops to a certain level, side reactions increase, which leads to an increase in the dry point of the product
Floors 190-205: What was said upstairs is more or less the same. Try to keep it as low as possible. Why do all the manufacturers set the launch date at 205? . Because the highest boiling range of gasoline is 205
For the pentane and butadiene in the raw materials, we control the dry point at 195-200