Removing contaminants from crude oil
一种污染物、水性相的技术，应用在精制烃油、处理烃油、石油工业等方向，能够解决分配影响等问题
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Embodiment 1
[0115] Example 1: Correlating Partition Levels of Amine Contaminants to Process pH
[0116] The amines monomethylamine (MMA), monoethanolamine (MEA) and ammonia (NH 3 ) distribution level. A number of different acids were used to control the pH in the experiments. Other additives were also introduced into the system (such as other bases and metal salts) to investigate whether the presence of different types of additives might have an effect on the correlation between the distribution level of the amine and the process pH. A diagram depicting the association is shown in Figure 1a -c.
[0117] It can be seen that under process conditions there is a strong correlation between the distribution level of the amine and the pH of the aqueous phase, with higher distribution levels observed at lower aqueous phase pH. It can also be seen that the correlation is substantially independent of the acid, or mixture of acids, used. Furthermore, the correlation was not affected by the pr...
Embodiment 2
[0118] Example 2: Correlating partition levels of acids of interest to process pH
[0119]Acids acetic acid (AcOH), hydrochloric acid (HCl), citric acid, glycolic acid, malic acid, maleic acid and H were measured over a range of pH levels 2 The allocation level of S. Several different bases were used to control pH in the experiments. Other additives were also introduced into the system (such as other acids and metal salts) to investigate whether the presence of different types of additives might have an effect on the correlation between the distribution level of acid and the process pH. A diagram depicting the association is shown in Figure 2a -g.
[0120] Under process conditions, a strong correlation between the distribution level of the acid and the pH of the aqueous phase was observed, with lower distribution levels observed at lower aqueous phase pH. As in the case of amine contamination, the results indicate that inclusion of other additives in the system has no e...
Embodiment 3
[0121] Example 3: Selecting acidic conditions to use during partitioning
[0122] The correlation between the distribution level of monoethanolamine and the pH of the aqueous phase was plotted against the correlation between the distribution level and the pH of the aqueous phase of 6 different acids of interest, which were : Acetic acid, glycolic acid, maleic acid, malic acid, citric acid and hydrochloric acid. A diagram depicting the association is shown in Figure 3a -f.
[0123] From the figure it can be seen that at a pH level of 5 or lower about 99% of the monoethanolamine is partitioned into the aqueous phase. However, at pH levels of 5 or lower, only some of the acids of interest obtained partition levels above 80% in the aqueous phase. For example, from Figure 3a It can be seen that at pH levels of 5 or lower about 70% of the acetic acid remains in the non-aqueous phase. The level of this acid in the non-aqueous phase is clearly undesirable as it will cause cor...
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