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Magnesium stabilized ultra low soda cracking catalysts

A catalyst, catalytic cracking technology, applied in physical/chemical process catalysts, molecular sieve catalysts, catalyst activation/preparation, etc., can solve problems such as reducing catalytic activity, stability and yield, affecting bottom-line profit generation, reducing catalyst performance, etc. Achieve activity and hydrothermal stability, good coke and hydrogen selectivity, improved FCC process

Active Publication Date: 2015-04-01
WR GRACE & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, reduced rare earth content can have a significant impact on catalyst performance, for example in terms of reduced catalytic activity, stability and productivity, thereby impacting bottom line profit generation

Method used

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  • Magnesium stabilized ultra low soda cracking catalysts
  • Magnesium stabilized ultra low soda cracking catalysts
  • Magnesium stabilized ultra low soda cracking catalysts

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0070] Example 1: Ultra-low Na with 1.6% MgO 2 O catalyst

[0071] with containing 0.9 wt% Na 2 Catalyst A was prepared from the USY zeolite of O. will contain 25% USY zeolite (0.9% Na 2 O), a slurry of 20% colloidal silica (Bindzil), 35% acid peptized alumina and 20% clay was ground in a Drais mill and subsequently spray dried in a Bowen spray dryer. The spray-dried catalyst was calcined at 400 °C for 40 minutes in a laboratory muffle furnace. Washing the calcined catalyst to remove Na 2 O. After the washing step, with enough MgSO 4 The solution impregnated the filter cake to form 1.6 wt% MgO on the catalyst. The resulting catalyst was designated Catalyst A. Catalyst A contains 0.15 wt% Na 2 O, which corresponds to 0.60 wt% Na based on zeolite 2 O. The characteristics of the catalyst are shown in Table 1 below.

example 2

[0077] Example 2: DCR Evaluation of Catalyst A

[0078] Using the cyclopropene steam (CPS) protocol (see ACS Symposium Series by Lori T. Boock, Thomas F. Petti and John A. Rudesill, 634, 1996, 171-183 (ACS Symposium Series, Vol. 634, 1996 , pp. 171-183)) deactivates Catalyst A and Comparative Catalyst 1. The catalyst was deactivated in the presence of 2000ppm Ni / 3000ppm V. After deactivation, the physical and chemical properties of Catalyst A and Comparative Example 1 are listed in Table 1 above.

[0079] Catalyst A exhibited significantly better retention of zeolite surface area (ZSA) after deactivation than Comparative Catalyst 1 . The deactivated catalyst was then run through a Davison Circulation Riser (DCR) unit with resid feed. The reactor temperature was 527°C. The DCR test results are reported in Table 2 below.

[0080] Table 2

[0081] Ultra-low sodium Mg-containing catalyst B after CPS in the presence of 2000ppm Ni / 3000ppm V The interpolated DCR yield o...

example 3

[0084] Example 3: Ultra-low Na with 0.8% MgO 2 O catalyst

[0085] with containing 0.9% Na 2 Catalyst B was prepared from the USY zeolite of O. A slurry comprising 25% USY zeolite, 15% boehmite alumina, 18% aluminum chlorohydrate and 42% clay was ground in a Drais mill and then spray dried in a Bowen spray dryer. The spray-dried catalyst was calcined at 400 °C for 40 minutes in a laboratory muffle furnace. Washing the calcined catalyst to remove Na2 O. After the washing step, with enough MgSO 4 The solution impregnated the filter cake to form 0.8 wt% MgO on the catalyst. The resulting catalyst was designated Catalyst B. Catalyst B contains 0.14 wt% Na 2 O, which corresponds to 0.56 wt% Na based on zeolite 2 O. The characteristics of the catalyst are shown in Table 3 below.

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Abstract

A rare earth free, ultra low soda, particulate fluid catalytic cracking catalyst which comprises a reduced soda zeolite having fluid catalytic cracking ability under fluid catalytic cracking conditions, a magnesium salt, an inorganic binder, clay and optionally, a matrix material. The catalytic cracking catalyst is useful in a fluid catalytic cracking process to provide increased catalytic activity, and improved coke and hydrogen selectivity without the need to incorporate rare earth metals.

Description

[0001] Cross References to Related Cases [0002] This patent application claims the benefit of the filing date of US Provisional Patent Application No. 61 / 674,527, filed July 23, 2012, the disclosure of which is hereby incorporated by reference. technical field [0003] The present invention relates to novel magnesium-containing catalytic cracking catalysts with high catalytic activity and good coke and hydrogen selectivity, methods of making the catalysts and methods of using the catalysts during catalytic cracking processes. Background technique [0004] Catalytic cracking is a petroleum refining process that is used commercially on a very large scale. Most refined petroleum products are produced using the fluid catalytic cracking (FCC) process. The FCC process generally involves the cracking of heavy hydrocarbon feedstocks into lighter products by contacting the feedstock with circulating fluidizable catalytic cracking catalyst inventories in a circulating catalyst reci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/06C10G11/18B01J35/00
CPCC10G11/18B01J37/06B01J29/061B01J37/0045B01J37/0201B01J2229/186B01J2229/38B01J2229/42B01J29/80B01J29/90B01J2229/20B01J29/084B01J35/30B01J35/70C10G11/05B01J35/00B01J21/16B01J27/125B01J37/0009B01J37/0072B01J37/08C10G11/08
Inventor 舒玉瑛郑武正R. F. 沃尔姆斯贝赫尔K. J. 苏托维奇R. 库马M. S. 兹巴思
Owner WR GRACE & CO
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