Project Description

MLC-500 Series Catalyst FCC catalyst

Applicable Scope

MLC-500 catalyst is applied to all types of feedstocks.

Characteristics

MLC-500 catalyst has higher LCO and gasoline yields, excellent metal tolerance, good hydrothermal stability, high bottom conversion ability and good coke selectivity.

Design Philosophy

Catalyst design philosophy is to enhance cracking ability for heavy oil, to limit further cracking of intermediate fractions, and to make reasonable adjustment on matrix/zeolite ratio and acid distribution. Main technological measures include: increasing surface cracking activity of large and middle pores and controlling activity of small pores; strengthening cracking ability to heavy oil through increasing conversion activity and selectivity of the matrix; adopting ultra-stable Y molecular sieve and adjusting its acid distribution to make full use of its macromolecule cracking characteristic and limit its cracking function to intermediate fractions.

Property

Table 1 Main Specifications of MLC-500 Catalyst

Item unit index
Al2O3 % (m/m) ≥45.0
Fe2O3 % (m/m) ≤0.60
Na2O % (m/m) ≤0.35
LOI % (m/m) ≤13.0
Pore volume ml/g ≥0.33
Specific surface area m2/g ≥240
Apparent bulk density g/ml 0.65～0.80
MAT (800℃/4h) % (m/m) ≥74
Attrition Index %( m/m) ≤3.5
Particle Distribution
0～40μm % (v/v) ≤18.0
0～149μm % (v/v) ≥89.0
APS μm 65.0-80.0

Commercial Reference

The first industrial application was conducted on SINOPEC Cangzhou Petrochemical, the test results show that using the MLC-500 catalyst and adopting the sectional material feeding component selective cracking process in the processing of raw materials, to keep the amount of basic unchanged, diesel gasoline ratio is increased by 0.44, the yield of light oil increased 3.25 percentage points, the total liquid yield increased by 4.63 percentage points, reaching more than 91 gasoline RON.

Table 2  Feedstock Properties

Items Reference MLC-500
Density (20℃), g/cm3 0.8994 0.9005
Freezing point, ℃ 39 45
CCR, m% 6.3 6.9
Basic nitrogen, ppm 1518 1700
Element, m%
C 86.01 86.00
H 12.50 12.59
S 0.80 0.75
N 0.35 0.27
Metal, ppm
Fe 12.8 14.0
Ni 8.4 6.3
Ca 23.2 20.0
V 3.4 3.4
Boiling range, ℃
Initial boiling point 242 279
50% 471 484
500℃quantity of distillate, v% 56.5 54.0

Table 3  Main Operating Conditions

Items Reference MLC-500
Throughput, t/h 1093.75 1076.45
Resid blending ratio (AR), m% 100 100
Reaction pressure, MPa 0.165 0.175
Regeneration pressure, MPa 0.160 0.161
Riser outlet temp., ℃ 517 518
Preheat temp., ℃ 677 686
2nd regeneration temp., ℃ 716 717
Air flow, Nm3/h 65100 63000
Atomization steam, kg/h 4300 4300
Steam stripping, kg/h 2480 3021
Reaction time, s 2.7 2.8
C/O 5.6 5.8
Recycle ratio 0.83 0.74

Table 4  Products Distribution

Items Reference MLC-500
Dry gas, m% 6.02 5.01
LPG, m% 10.31 11.69
Gasoline, m% 35.15 29.78
LCO, m% 29.09 37.71
Slurry, m% 6.90 3.07
Coke, m% 11.63 11.87
Loss, m% 0.90 0.87
Light oil yield, m% 64.24 67.49
Total liquid yield, m% 74.55 79.18
Diesel/gasoline 0.83 1.27
Conversion, m% 64.01 59.22
Heavy oil conversion, m% 93.10 96.93

 

 

Table 5  Main Properties of E-cat

Items Reference MLC-500
Surface Area, m2/g 63 87
Pore Volume, ml/g 0.22 0.25
Bulk Density, g/ml 0.91 0.89
Metal, ppm
Ni 3900 4500
Fe 6900 6900
V 2300 2400
Ca 17800 17200
Na 4200 4100
Particle Distribution, v%
0～40μm 7.4 7.3
0～80μm 66.4 61.1
0～110μm 90.0 83.0
0～149μm 98.9 94.0
APS, μm 68.1 70.5
MAT, m% 57 60
CCR, m% 0.10 0.12

Commercial Application

MLC-500 Catalyst was applied in SINOPEC refineries such as Jinan Petrochemical, Cangzhou Petrochemical, Gaoqiao Petrochemical, Zhenhai Refining&Petrochemical, Guangzhou Petrochemical and Maoming Petrochemical, Qingyang Oil Field, etc.

Products/Grades

MLC-5000 and MLC-500ZA

 

Email: y@yzeolite.com