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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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