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High
Pressure Hydrocracking Technology
Bellowing list the product slates
and product qualities of high-pressure hydrocracking of
several typical feeds. The data illustrate that whether
using single-stage in series or single-stage process, or
using full-recycle or once-through operation mode, the
produced diesels all well meet the requirements of
EURO-III and EURO-VI. In addition, the process can also
produce good quality reformer feeds and 3#
jet fuels. When once-through operation mode is selected,
the unconverted oil is high quality alternated feed of
steam cracker for ethylene production. From this, we can
see that high pressure hydrocracking is not only the
sole technology for producing high grade jet fuels from
poor quality heavy oil, but also the sole technology for
producing EURO-III and EURO-VI diesel from poor quality
heavy oil.
Product yields and qualities of high-pressure
hydrocracking
|
Feed |
Saudi light
VGO |
Saudi medium VGO |
Iranian light VGO |
Iranian light VGO |
|
Boiling range ℃ |
319～531 |
314～527 |
329～543 |
321～528 |
|
Process |
Single-stage in
series |
Single-stage |
|
Operation mode |
Full recycle |
once through |
Full recycle |
once through |
Full recycle |
once through |
Full recycle |
once
through |
|
Product qualities |
|
|
|
Heavy naphtha, yield m% |
16.64 |
12.96 |
18.43 |
11.36 |
17.46 |
11.49 |
10.98 |
7.76 |
| Aromatics potential
m% |
57.1 |
64.2 |
57.5 |
64.7 |
58.3 |
64.7 |
52.4 |
60.0 |
| Jet fuels, yield m% |
37.84 |
35.45 |
41.84 |
29.97 |
42.7 |
30.16 |
29.87 |
21.76 |
| Smoke point/mm |
29 |
27 |
29 |
28 |
28 |
27 |
28 |
26 |
| Aromatics v% |
2.5 |
4.2 |
5.9 |
9.8 |
4.0 |
6.8 |
6.5 |
7.1 |
Diesel,
yield
m% |
31.43 |
11.76 |
24.63 |
19.65 |
25.95 |
20.73 |
48.96 |
39.86 |
| S/N μg/g |
<5/<1 |
<5/<1 |
<5/<1 |
<5/<1 |
<5/<1 |
<5/<1 |
<5/<1 |
<5/<1 |
|
Density
g/cm3 |
0.8095 |
0.8238 |
0.8126 |
0.8299 |
0.8146 |
0.8280 |
0.8152 |
0.8206 |
| Cetane number |
70 |
64 |
68.8 |
59.2 |
70.5 |
59.2 |
62.0 |
59.2 |
| Aromatics m% |
7.3 |
11.8 |
12.3 |
14.1 |
13.3 |
14.7 |
4.5 |
5.9 |
| Mid-barrel distillates, yield
m% |
69.27 |
47.21 |
66.47 |
49.62 |
68.65 |
50.89 |
78.83 |
61.62 |
| Unconverted oil, yield
m% |
- |
31.58 |
- |
30.84 |
- |
30.05 |
- |
24.04 |
| BMCI |
- |
9.8 |
- |
12.0 |
- |
13.0 |
- |
10.1 |
※Other
operating conditions: Pressure-15.7MPa, 370℃＋ Per
pass conversion-70%
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