Catalytic cracking gasoline hydro-upgrading method

A technology for catalytic cracking gasoline and hydro-upgrading, which is applied in chemical instruments and methods, catalyst activation/preparation, molecular sieve catalysts, etc., and can solve the problems of unsatisfactory thermal stability, hydrothermal stability and anti-coking performance of carrier alumina.

Active Publication Date: 2022-02-22
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Alumina supports are widely used in the fields of heterogeneous catalysts, catalyst supports, etc. The thermal stability, hydrothermal stability, and anti-coking performance of carrier alumina are not ideal.

Method used

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  • Catalytic cracking gasoline hydro-upgrading method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Preparation of prehydrogenation catalyst

[0087] Add 111g of alumina and 12.0g of scallop powder into the kneader, and mix evenly, then add nitric acid, 260g of ZSM-5, and deionized water, knead evenly, and knead and extrude. Dry at 130° C. for 9 hours, and bake at 550° C. for 6 hours to obtain a carrier. The composition of the carrier is: 70% of ZSM-5 and 30% of alumina.

[0088] The preparation method of described pre-hydrogenation catalyst is as follows: press 7wt% molybdenum oxide in the catalyzer, 1.5wt% cobalt oxide, the ratio configuration molybdenum, cobalt, the dipping solution of nickel element of 3.6wt% nickel oxide, molybdenum-containing solution, cobalt, Mix the nickel solution, adjust the pH value of the mixed solution to 2.6, and then dissolve the ammonium sulfide to obtain an impregnating solution containing Co, Mo, Ni and S; impregnate the carrier with an impregnating solution containing Co, Mo, Ni and S, under closed conditions , aged for 5 hours to ...

Embodiment 2

[0099] 1. The process of preparing mesoporous-macroporous ZSM-5 molecular sieve is the same as in Example 1, the difference is that the proportion of ingredients is different 1.2SiO 2 :0.02Al 2 o 3 :0.55Na 2 O:62.4H 2 O, its mesopore-macropore diameter is 2-67nm, and the pore volume is 0.25m 3 / g, the total specific surface area is 318m 2 / g; the silicon / aluminum molar ratio of the product mesoporous-macroporous ZSM-5 molecular sieve is 53. The pH of the acid solution containing the styrene-butadiene rubber emulsion is 5.5.

[0100] 2. Preparation of CoSnO 3 The process is the same as in Example 1.

[0101] 3. The process of preparing the carrier is the same as in Example 1, the carrier includes 78wt% alumina, 3.6wt% CoSnO 3 , 8.4wt% ZSM-5 molecular sieve containing mesopores-macropores.

[0102] 4. The process of preparing the catalyst is the same as that in Example 1. The molybdenum content of the catalyst active component is 12.4 wt%, the cobalt content is 1.6 wt%,...

Embodiment 3

[0104] 1. The process of preparing mesoporous-macroporous ZSM-5 molecular sieve is the same as in Example 1, the difference is that the ingredient ratio is different 0.85SiO 2 :0.02Al 2 o 3 :0.55Na 2 O:62.4H 2 O, its mesopore-macropore diameter is 2-56nm, and the pore volume is 0.28m 3 / g, the total specific surface area is 308m 2 / g. The pH of the acid solution containing the styrene-butadiene rubber emulsion is 5.

[0105] 2. Preparation of CoSnO 3 The process is the same as in Example 1.

[0106] 3. The process of preparing the carrier is the same as in Example 1, the carrier includes 89wt% alumina, 1.4wt% CoSnO 3 , 9.6wt% ZSM-5 molecular sieve containing mesoporous-macropores.

[0107] 4. The process of preparing the catalyst is the same as that in Example 1. The molybdenum content of the catalyst 3 active component is 11.3 wt%, the cobalt content is 3.0 wt%, and the magnesium content is 1.3 wt%. The amount of ammonium sulfide added is 115% of the theoretical sul...

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Abstract

The invention relates to a catalytic cracking gasoline hydro-upgrading method, which comprises the following steps: firstly, full-fraction catalytic cracking gasoline passes through a pre-hydrogenation reactor to remove alkadiene, mercaptan and thioether under the action of a pre-hydrogenation catalyst, then a pre-hydrogenation product is subjected to selective hydro-desulfurization under the action of hydro-desulfurization and isomerization catalysts, and meanwhile, straight-chain olefin is isomerized into single-branched olefin or single-branched alkane, so that clean gasoline with ultra-low sulfur content is obtained; and the pre-hydrogenation catalyst takes one or more of amorphous silica-alumina, alumina, a Y molecular sieve and ZSM-5 as a carrier, and is impregnated with one or more of active components of cobalt, molybdenum and nickel. The catalytic cracking gasoline hydro-upgrading method is used for producing clean gasoline with ultra-low sulfur and low octane number loss.

Description

technical field [0001] The invention relates to the field of catalytic cracking gasoline hydrogenation, in particular to a catalytic cracking gasoline hydrogenation upgrading method. Background technique [0002] At present, FCC gasoline hydrodesulfurization catalysts pay more attention to maintaining the octane number without loss while achieving the purpose of desulfurization and olefin reduction. CN107151563A provides a clean gasoline production method coupling ultra-deep desulfurization and olefin high-octane conversion. The production method comprises: contacting the whole distillate gasoline with a sulfur transfer catalyst under hydrogen-facing conditions to undergo a directional low-temperature sulfur transfer reaction, and then performing oil product cutting to obtain light distillate gasoline and heavy distillate gasoline; mixing the light distillate gasoline with an organic acid, Under the action of the esterification catalyst, the C5-C7 olefins undergo esterifica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04B01J29/48B01J29/46B01J27/051B01J37/20B01J37/02
CPCC10G65/043B01J29/48B01J29/46B01J27/0515B01J37/20B01J37/0201B01J2229/18Y02P20/52
Inventor 向永生王廷海王高峰姚文君李景锋高海波常晓昕张永泽尹玲玲鲍晓军
Owner PETROCHINA CO LTD
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