Large-pore-diameter high-bulk-density continuous reforming catalyst, preparation thereof and applications of the catalyst

A technology for reforming catalysts and large pore diameters, applied in physical/chemical process catalysts, chemical instruments and methods, catalytic reforming of naphtha, etc., can solve the problem of uneven distribution of reaction products, uneven flow of catalysts, and increased oil and gas treatment capacity major issues

Active Publication Date: 2015-04-15
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, radial reactors are generally used in continuous reforming units. After the capacity of the unit is expanded, the oil and gas processing capacity will increase. For reforming catalysts with low bulk density, under the pressure of oil and gas, part of the catalyst will be pressed against the central tube wall and cannot be tra

Method used

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  • Large-pore-diameter high-bulk-density continuous reforming catalyst, preparation thereof and applications of the catalyst
  • Large-pore-diameter high-bulk-density continuous reforming catalyst, preparation thereof and applications of the catalyst
  • Large-pore-diameter high-bulk-density continuous reforming catalyst, preparation thereof and applications of the catalyst

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example 1

[0041] Take 1000 grams of pseudo-boehmite (produced by Sasol Company, , Alumina content 76m%) and 1.4 liters of deionized water, stirring and slurrying at room temperature for 0.5 hours. Then add 60 ml (1:1 volume) of nitric acid, a predetermined amount of stannous chloride hydrochloric acid solution, and acidify for 2 hours. Then drop the ball into an oil-ammonia column, where the oil column is aviation kerosene, the wet ball is solidified in the ammonia water column for 2 hours, then filtered, washed with deionized water three times, dried at 60°C for 6 hours, and dried at 120°C for 2 hours. Fired at 500°C for 4 hours in a flowing air atmosphere. The properties of the prepared carrier No. 1 are shown in Table 1.

Example Embodiment

[0042] Example 2

[0043] Take 200ml of water to dissolve 98g of aluminum nitrate nonahydrate, add 3.4ml of stannous chloride hydrochloric acid solution (tin solubility is 12mg / ml) after dissolving it, stir well and immerse 200g of No. 1 carrier, after 5 hours of immersion , Under vacuum conditions, evaporate the impregnating solution at 60°C, dry at 120°C for 4 hours, and then calcinate at 450°C for 4 hours. The No. 2 carrier was prepared, and its physical properties are listed in Table 1.

Example Embodiment

[0044] Example 3

[0045] Carrier No. 3 was prepared according to the method of Example 2, except that 180 g of aluminum nitrate nonahydrate was dissolved in 300 ml of water, and 6.4 ml of stannous chloride hydrochloric acid solution (tin solubility: 12 mg / ml) was added after the transparent solution. The physical properties of No. 3 carrier are listed in Table 1. Its pore size distribution is as follows figure 1 Shown.

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Abstract

The invention relates to a large-pore-diameter high-bulk-density continuous reforming catalyst, preparation thereof and applications of the catalyst. The catalyst comprises following components by mass, based on elements, 0.01-1.0% of a VIII-group metal, 0.01-1.0% of an IVA-group metal, and 0.2-3.0% of a halogen, wherein the VIII-group metal is platinum, the IVA-group metal is germanium or tin, the bulk density of the catalyst is 0.58-0.90 g/mL, the most probable pore diameter is 8-20 nm, and the specific surface area is 170-210 m<2>/g. The catalyst is applied in a continuous reforming process, and is high in activity, high in xylene yield and low in coke yield.

Description

technical field [0001] The invention relates to a continuous reforming catalyst with large aperture and high bulk density and its preparation and application. Background technique [0002] Catalytic reforming is one of the important production processes in petroleum processing, and its main purpose is to produce high-octane gasoline, BTX aromatics and cheap hydrogen. With the upgrading of gasoline and diesel quality and the rapid development of hydrogenation technology, catalytic reforming plays an increasingly important role in the refining and chemical industry. [0003] For refinery continuous reforming unit capacity expansion, the furnace load is usually increased, but the reactor is less modified. At present, radial reactors are generally used in continuous reforming units. After the capacity of the unit is expanded, the oil and gas processing capacity will increase. For reforming catalysts with low bulk density, under the pressure of oil and gas, part of the catalyst ...

Claims

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Application Information

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IPC IPC(8): B01J27/135C10G35/09
Inventor 潘晖华陈世安胡长禄赵悦张鹏贺新张上桂鹏
Owner PETROCHINA CO LTD
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