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A catalyst for pretreatment of inferior reforming raw materials, a preparing method thereof and a pretreatment method for inferior reforming raw materials

A catalyst and pretreatment technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems that do not meet the development requirements of "low-carbon" oil refining, high operating costs, and large comprehensive energy consumption, etc. problems, to achieve the effects of strong olefin saturation ability, strong anti-coking ability, and high activity of hydrodesulfurization and denitrification

Inactive Publication Date: 2019-03-05
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production of coking naphtha in my country is relatively large, and most of them are hydrogenated alone or mixed with diesel oil under relatively harsh process conditions, and then the separated hydrogenated naphtha is used as a reforming pre-hydrogenation unit Therefore, there are problems such as large number of equipment sets, large land occupation, high construction investment, large comprehensive energy consumption, and high operating costs, which do not meet the development requirements of "low-carbon" refining in the future

Method used

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  • A catalyst for pretreatment of inferior reforming raw materials, a preparing method thereof and a pretreatment method for inferior reforming raw materials
  • A catalyst for pretreatment of inferior reforming raw materials, a preparing method thereof and a pretreatment method for inferior reforming raw materials
  • A catalyst for pretreatment of inferior reforming raw materials, a preparing method thereof and a pretreatment method for inferior reforming raw materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) 1000g of commercial pseudo-boehmite with a pore volume of 0.6ml / g large pore volume alumina / pore volume of 0.2ml / g small pore volume alumina ratio of 1.0, Tianqing powder 30g, silica gel 100g, Mix mechanically for 30 minutes; dissolve 30 g of citric acid in 80 g of deionized water, then add 20 g of nitric acid with a concentration of 60%, add it to the uniformly mixed powder, and wet mix for 35 minutes to obtain a plastic soft mass.

[0043] (2) Add the soft plastic mass obtained in the step (1) into the trough of the extruder, extrude with a clover-shaped orifice plate, and then pelletize to obtain a clover-shaped carrier. Then keep healthy at room temperature for 3 hours, dry at 120°C for 4 hours in the air atmosphere, put it in a muffle furnace at 450-550°C, and roast it for 4 hours in the air atmosphere to obtain SiO-containing 2 Clover-shaped alumina support 1.

[0044] (3) Add 40g of phosphoric acid to 300g of deionized water, stir evenly, add 90g of industri...

Embodiment 2

[0047] (1) 1000g of commercial pseudo-boehmite with a pore volume of 1.0ml / g large pore volume alumina / pore volume of 0.3ml / g small pore volume alumina ratio of 0.2, 30g of Tianqing powder, 100g of silica gel, mechanically Mix for 30 minutes; dissolve 30 g of citric acid in 80 g of deionized water, then add 20 g of nitric acid with a concentration of 60%, add it to the uniformly mixed powder, and wet mix for 35 minutes to obtain a plastic soft block.

[0048] (2) Add the soft plastic mass obtained in the step (1) into the trough of the extruder, extrude with a clover-shaped orifice plate, and then pelletize to obtain a clover-shaped carrier. Then keep healthy at room temperature for 3 hours, dry at 120°C for 4 hours in the air atmosphere, put it in a muffle furnace at 450-550°C, and roast it for 4 hours in the air atmosphere to obtain SiO-containing 2 Clover-shaped alumina support 2.

[0049] (3) 70g of phosphoric acid is added to 300g of deionized water, after stirring evenl...

Embodiment 3

[0052] (1) γ-Al 2 o 3 / θ-Al 2 o 3 1000g of commercial pseudo-boehmite whose ratio is 0.8 (wherein the mass ratio of pore volume of 0.8ml / g alumina to 0.4ml / g alumina is 3.5), Tianqing powder 60g, mechanically mixed for 30min; Dissolve 40 g of acid in 80 g of deionized water, add 25 g of nitric acid with a concentration of 68%, add it to the uniformly mixed powder, and wet mix for 35 minutes to obtain a plastic soft block. Others are the same as in Example 1, and a clover-shaped alumina carrier 3 is obtained.

[0053] (2) 40g of phosphoric acid is added to 300g of deionized water, after stirring evenly, 120g of industrial grade molybdenum trioxide, 100g of industrial grade ammonium metatungstate, and 100g of industrial grade basic nickel carbonate are added to the phosphoric acid solution and stirred continuously, 40 Minutes later, the temperature was raised to 90-100°C, 50g of industrial-grade cobalt nitrate and 80g of citric acid were added, and after stirring for 20 minu...

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Abstract

A catalyst for pretreatment of inferior reforming raw materials, and a preparing method thereof are disclosed. The catalyst is composed of an active component, an auxiliary agent and a carrier, wherein the active component is composed of a Group VIB element and a Group VIII element; the auxiliary agent is phosphorus; the catalyst comprises, based on oxides, 10-30 wt% of the Group VIB element, and2-10 wt% of the Group VIII element; the weight ratio of the Group VIB element to the P is 0.05 to 0.20; and the weight ratio of the Group VIII element to the P is 0.8 to 2.0. The invention also discloses a pretreatment method for inferior reforming raw materials. The catalyst can remove the sulfur and nitrogen in the inferior reforming raw materials to 0.5 [mu]g / g or below in the pretreatment method, the ultra-deep hydrodesulfurization and denitrification of the inferior reforming raw materials are achieved, and oil formed after hydrogenation can meet material feeding requirements of a reformer.

Description

technical field [0001] The invention relates to a preparation method and application of a pretreatment hydrogenation catalyst for inferior reforming raw materials, in particular to a clover-shaped catalyst for hydrogenation pretreatment of inferior reforming raw materials and its application. The hydrogenation catalyst of the present invention has the functions of ultra-deep desulfurization, denitrogenation, olefin saturation and arsenic removal, and can perform hydrotreating on inferior reforming raw materials, and the produced oil after hydrotreating can meet the requirements of reforming feed; and other catalysts Compared with the hydrogenation reaction process, the catalyst activity is high, the catalyst performance is stable, the anti-coking ability is strong, and it has the characteristics of processing a wide range of raw materials. Background technique [0002] Catalytic reforming is one of the main crude oil secondary processing processes, and it is the main source ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/199B01J35/10B01J37/08B01J37/02C10G45/08
CPCC10G45/08B01J23/002B01J27/199B01J37/0018B01J37/0201B01J37/082B01J2523/00C10G2300/202B01J35/31B01J35/30B01J35/615B01J35/635B01J35/633B01J35/647B01J2523/31B01J2523/55B01J2523/68B01J2523/845B01J2523/847
Inventor 马宝利徐铁钢刘茉徐伟池王丹宋金鹤于春梅张文成孙发民杨晓东谭明伟温广明方磊张英豪张铁珍赵野李瑞峰
Owner PETROCHINA CO LTD
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