A kind of selective hydrodesulfurization catalyst and its preparation and application

A hydrodesulfurization and catalyst technology, applied in the direction of catalyst carrier, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of low olefin saturation rate

Active Publication Date: 2017-03-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this catalyst to treat catalytic cracking gasoline raw materials, the olefin saturation rate is low

Method used

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  • A kind of selective hydrodesulfurization catalyst and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Weigh 1000 g of P1-1, then add 1440 ml of aqueous solution containing 10 ml of nitric acid (product of Tianjin Chemical Reagent No. Dry the wet strips at 120°C for 4 hours to obtain dry strips, shape the dry strips, sieve, grind and sieve the dry strip materials (generally called industrial dry strip waste) with a length of less than 2mm, and take 100-200 Mesh sieving to obtain the modified product P2A of P1-1. The k values ​​of P2A are shown in Table 1.

Embodiment 2

[0062] Weigh 1000 g of P1-1, and flash dry at 240°C for 6 minutes to obtain P2B, a modified product of P1-1. See Table 1 for the k values ​​of P2B.

Embodiment 3

[0064] 200 grams each of P2A obtained in Example 1 and P2B obtained in Example 2 were evenly mixed to obtain the modified product P2C of P1-1. See Table 1 for the k value of P2C.

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Abstract

The invention discloses a selective hydrodesulfurization catalyst, and preparation and application thereof. The catalyst comprises a carrier, at least one non-noble metal composition selected from group VIII and supported on the carrier, at least one metal composition selected from group VI B, and one or more of organics selected from alcohols, organic acids and organic amines. Based on the catalyst in terms of oxides, the mass fraction of the group VIII metal composition is 0.1-6%, the mass fraction of the group VI B metal composition is 1-25%, and the molar ratio of the organic to the group VIII metal composition is 0.5-2.5. The carrier is double-peak porous aluminium oxide, and characterized by mercury intrusion porosimetry, the carrier has the pore volume of 0.9-1.2 mL / g and the specific surface area of 50-300 m<2> / g, the pore volume of pores with the diameter of 10-30 nm accounts for 55-80% of the total pore volume, and the pore volume of pores with the diameter of 300-500 nm accounts for 10-35% of the total pore volume. Compared with the prior art, the provided catalyst is especially applied to hydrofining processes of coked gasoline and catalytically-cracked gasoline.

Description

technical field [0001] The invention relates to a hydrorefining catalyst and its preparation and application, more specifically to a selective hydrodesulfurization catalyst and its preparation and application. Background technique [0002] As we all know, air pollution brings serious environmental problems. Excessive engine emissions are one of the main causes of air pollution. In recent years, in order to meet the requirements of protecting the environment, countries around the world have put forward stricter restrictions on the composition of engine fuel in order to reduce the emission of harmful substances. SOx, the combustion product of sulfide in gasoline, is one of the main harmful substances, and it is also one of the main substances that poison the catalyst of the catalytic converter of automobile exhaust gas. [0003] In general, sulfur contained in gasoline fractions is easier to remove by hydrotreating than heavy distillates. However, olefins with a low degree ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882B01J32/00B01J35/10C10G45/08
Inventor 褚阳李明丰孙淑玲刘锋李会峰习远兵
Owner CHINA PETROLEUM & CHEM CORP
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