Project Description

VRCC Series Catalyst FCC catalyst

 

Applicable Scope

VRCC-1 is a bottom cracking catalyst, especially suitable for processing heavy oil with high CCR content.

Characteristics

VRCC-1 is developed for #2 FCCU of SINOPEC Yansan Petrochemical in Beijing，which has a better bottom cracking ability, high liquid yield, metal contaminant resistant ability and improved coke selectivity. VRCC-1 catalyst is also a good choice for clean gasoline production.

Design Philosophy

At present, VRCC-1 catalyst is characterized as follows: firstly, SOY is used as Y zeolite component with higher gasoline selectivity and lower gasoline olefinicity by enhancing bi-molecular reactions; secondly, the matrix used is mesopore modified to improve bottom cracking ability, coke selectivity and metal contaminant resistant ability; thirdly, the catalyst micro chemical environment was well designed by optimizing the active component matching and distribution; and finally, the selectivity of bimolecular reactions and monomolecular reactions are well controlled and hence the product distribution and product quality control can be realized.

Property

The main specifications of VRCC-1 catalyst were shown in Table 1.

Table 1 Main Specification of VRCC-1 Catalyst

  VRCC-1
Chemical components, m%  
Al2O3 ≥45.0
Na2O ≤0.30
SO4= ≤2.0
Fe2O3 ≤0.45
Physical property  
LOI, m% ≤13.0
Attrition Index, % ≤3.0
Bulk Density, g/ cm3 0.68-0.78
Surface Area, m2/g ≥230
Pore Volume, ml/g ≥0.34
Particle Distribution  
0~40μm, m% ≤20
0~149μm, m% ≥90
MAT  
800oC/4h, m% ≥75

Commercial Reference

The industrial application was conducted #2 FCCU of SINOPEC Yanshan Petrochemical. The catalyst replacement started from December 2007 and the performance evaluation was conducted in November of 2008. Fresh catalyst make up was conducted on a day-to-day base. VRCC-1 content in inventory reached a level of 100% in November of 2008. The results were listed in Table2.

The VRCC-1 catalyst has an excellent performance covering good adaptability to different feeds, excellent bottom cracking ability, good coke selectivity and metal contaminant resistant ability. As a result the unit throughput is increased by using VRCC-1 catalyst. According to the results of commercial application, the yield of gasoline plus LCO is higher than 66 wt% and the total liquid yield is higher than 80wt%. Meanwhile the gasoline olefin content is reduced. The application of the catalyst is beneficial to refineries. The VRCC-1 catalyst exhibits high activity-stability, low catalyst consumption, no negative influence on fluidization status in long term operation.

Table 2  Feedstock Properties

Items Reference VRCC-1
Throughput, t/d 2355 2381
Blending ratio, % 61.35 63.37
Density (20℃), g/cm3 0.9242 0.9209
Viscosity (80℃), mm2/s 128.7 63.78
CCR, % 7.11 6.43
Element, %
C / 86.94
H / 12.40
S 0.35 0.35
N 0.29 0.22
SARA, %
saturates 52.1 45.8
Aromatics 44.0 30.8
Resin 3.9 23.3
Asphalt 0.0 0.1
Metal, μg/g
Fe 6.73 7.78
Ni 8.71 6.41
Cu <0.1 <0.1
V 1.18 0.63
Na 0.71 1.71
Ca 18.01 16.64

Table 3  Industrial Application Results of VRCC-1 Catalyst

 

Catalyst Reference VRCC-1
Operation conditions
Reaction temp., ℃ 517 517.2
Regeneration temp., ℃ 680 702
Heavy metal content on E-cat, μg/g
Fe 5800 8330
Ni 7000 7800
V 2400 2200
Ca 7400 6800
Sb 1800 2200
Ni + 1/4V 7560 8350
Products distribution, wt%
Dry gas 3.16 2.78
Liquid yield 14.52 15.14
Gasoline 44.21 46.37
Light cycle oil 20.79 20.57
Slurry 7.23 6.23
Coke 8.96 7.83
Conversion, wt% 71.98 73.20
Gasoline + LCO, wt% 65.00 66.94
Total liquid yield, wt% 79.52 82.08
Gasoline properties
Gasoline composition, v% ( Fluorescent method )
Saturates 36.3 38.6
Olefin 44.9 37.9
Aromatics 18.8 23.5
RON 91.7 91.9
Inductive period, min 369 358

 

Commercial Application

Since December of 2007, VRCC-1 has been used in #2 FCCU of SINOPEC Yanshan Petrochemical.

Products/Grades

VRCC-1

 

Email: y@yzeolite.com