Oligomerization process
A polyolefin, olefin technology, applied in the field of oligoolefin feedstock, oligomerization products produced and analysis of oligomerization products, can solve problems such as measuring multi-branching
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0068] will contain various C 6 Olefin Feed The oligomerization process according to the first aspect of the invention is carried out using a neutralized macropore size catalyst.
[0069] More specifically, C 6 The olefin feed comes from refinery / oligomerization plants. C 6 The typical composition of the olefin feed is given in Table 1, with the sulfur content varying from 0 ppm to 26 ppm. Such amounts are not believed to affect the properties of the reaction and oligomerization products.
[0070] Table 1: C 6 Typical percentage composition of olefin feed
[0071] components Wt% Isobutane 0.21 n-butane 1.48 Isobutylene 0.00 Butene 0.83 C 4 Diene
0.00 C 4 Cyclic Hydrocarbons (Olefins + Saturated)
0.00 Isopentane+2,2-Dimethylpropane 1.36 n-pentane 0.08 Isoamylene 4.12 n-pentene 4.08 C 5 Diene
0.00 C 5 Cyclic Hydrocarbons (Olefins + Saturated)
0.01 Hexene 80.79 C 6 ...
Embodiment 2
[0082] Figure 8A schematic flow diagram of the oligomerization process is shown, the system comprising a feed vessel 8A, the reaction zone comprising a single reactor 8B, a separator 8C and a product purification column 8D. In this system, stream 801 is a fresh feed consisting of low molecular weight olefins and low reactivity saturated hydrocarbons. Stream 802 is the total feed to the reaction zone, which includes fresh feed to the system, and a recycle stream. Stream 803 is the crude product from the reaction zone, which contains olefin products, unreacted light olefins, less reactive saturates and heavy by-products. Stream 804 is a recycle stream consisting of unreacted olefins and less reactive saturates. Stream 805 is a purge stream that is intended to eliminate accumulation of less reactive compounds in the system. Stream 807 is the desired oligomer product. Stream 808 is an unwanted heavy by-product of the oligomerization reaction.
[0083] In oligomerization syst...
Embodiment 3
[0088] It has been found that as the catalyst ages, it is often necessary to increase the reactor temperature to maintain the same productivity. However, in addition to increasing the reaction rate, temperature also affects product quality in several ways. For example, higher reaction temperatures can lead to more cracking of the reactor product and reduced product selectivity. For this reason, higher temperatures can be undesirable in oligomerization reactions. Additionally or alternatively, temperature can have some effect on the isomer distribution in the product. For example, higher temperatures can result in less branching and fewer quaternary carbons in the oligomer product. Such an effect is shown in Figure 11 , which shows a graph plotting processing temperature versus oligomerization product quaternary carbon content and branching for oligomerization products. In general, reduced oligomeric product branching increases the reactivity of the oligomeric product in s...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More