LSHAA Catalytic Cracking Solid Strengthening Auxiliary
1.1 Product introduction:
LSHAA catalytic cracking solid strengthening auxiliary is a new catalytic cracking auxiliary mainly used in catalytic cracking reaction to improve the conversion depth of crude oil and inferior crude oil, reduce diesel oil and oil slurry yield, improve gasoline yield and LPG high value-added products.
1.2 Technical indicators parameters:
Table 1 Quality indicators
|Appearance||Khaki or off-white microspheres|
|burn down, m%||≤ 13||9|
|Al2O3, m%||≥ 40||45|
|wear index, m%/h||≤ 3.5||2|
|Apparent density, g/ml||0.60-0.80||0.68|
|surface area, m²/g||≥ 250||280|
|* surface area retention, %||≥ 50||55|
|Pore volume, ml/g||≥ 0.20||0.22|
|Activity stability (800℃/17 hours aging)||≥70||75|
|0-40unl, v%||≤ 20||19|
|The average particle size, um||60-80||76|
* Refers to the ratio of the specific surface area of the additive after aging at 800°C and 100% water vapor for 17 hours to the specific surface area of the fresh additive.
1.3 Evaluation of small fixed fluidized bed:
Table 2 Evaluation results of fixed fluidized bed
|Gasoline + LPG||48.5||51.59|
|light oil + liquefied gas||69.62||72.6|
Note: The reaction temperature is 500°C, and the ratio of solvent to oil is 6.0.
1.4 Comparison of LSHAA additives and conventional cracking catalysts:
Table 3 Comparison of micro-reactive activity
|800℃, 100% steam aging for 4h||800℃, 100% steam aging for 17h|
Industrial application of LSHAA catalytic cracking solid strengthening additives:
The LSHAA catalytic cracking solid enhanced refining aid has been successfully tested in the catalytic unit of Sinopec Changling Branch, and now it has been put into use in the 1# catalytic unit of Changling Refinery and Jinan Refinery. The industrial application shows that the refining catalyst is added as HAA catalytic cracking solid strengthening aid, which accounts for 15% of the storage capacity of the unit system, and can effectively reduce diesel oil and oil slurry under the condition of keeping the total liquid yield and octane number unchanged. Gasoline yield increased by more than 2 units.