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Catalysts used for reducing petroleum coke sulfur content, and preparation method and application thereof

A technology of catalyst and sulfur content, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve problems such as the inability to reduce the sulfur content of petroleum coke and limit the use range of petroleum coke

Active Publication Date: 2020-02-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The catalysts in the above-mentioned patents are mainly aimed at the hydrotreating of gasoline, diesel oil, and residual oil, or the targeted addition of oxidation catalysts in the improved delayed coking method, or the added additives will affect the quality of petroleum coke and thus limit the scope of use of petroleum coke, and None of the above treatment methods are particularly effective in reducing the sulfur content of petroleum coke

Method used

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  • Catalysts used for reducing petroleum coke sulfur content, and preparation method and application thereof
  • Catalysts used for reducing petroleum coke sulfur content, and preparation method and application thereof
  • Catalysts used for reducing petroleum coke sulfur content, and preparation method and application thereof

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preparation example Construction

[0040] Embodiments of the present invention also provide a method for preparing a catalyst for reducing the sulfur content of petroleum coke, comprising the steps of:

[0041] S1. Vector preparation

[0042] The preparation process of the first carrier and the second carrier includes: soaking the carbonaceous particles with a particle size of ≤100 μm in an alkali solution, filtering, washing and drying, and then calcining in an inert atmosphere. The process of immersing in alkaline solution and roasting can achieve the purpose of fully expanding the pores, significantly increasing the pore diameter of the carrier, so that the final prepared catalyst product can meet the requirements of specific surface area and average pore diameter.

[0043] What needs to be added is that if the specific surface area and average pore diameter of the raw material used as the carrier meet the requirements, the modification of the carrier may not be carried out.

[0044] Specifically, the alkal...

Embodiment 1

[0063] The present embodiment provides a kind of preparation method that is used to reduce the catalyst of petroleum coke sulfur content, it comprises the following steps:

[0064] (1) The preparation method of 1# carrier: mechanically pulverize the activated carbon from the shell, sieve to obtain particles with a particle diameter not greater than 20 μm, place it in a KOH aqueous solution with a concentration of 5mol / L, soak at room temperature for 6 hours, and filter. Wash with water until neutral, dry in an oven at 80°C for 12 hours, and then place in an atmosphere furnace under N 2 Calcined at 550°C for 6 hours under atmosphere, then lowered to room temperature for use.

[0065] (2) The first catalyst: Weigh 19.5g of cobaltous nitrate hexahydrate, 19.5g of nickel nitrate hexahydrate, 15.2g of ferric nitrate nonahydrate, and 7.6g of cerium nitrate hexahydrate, put them into a beaker with a volume of 500mL, and add an appropriate amount of Distilled water, stirred for 1 hou...

Embodiment 2

[0070]The present embodiment provides a kind of preparation method that is used to reduce the catalyst of petroleum coke sulfur content, it comprises the following steps:

[0071] (1) The preparation method of 1# carrier: mechanically pulverize the activated carbon from the shell, sieve to obtain particles with a particle diameter not greater than 20 μm, place it in a KOH aqueous solution with a concentration of 5mol / L, soak at room temperature for 6 hours, and filter. Wash with water until neutral, dry in an oven at 80°C for 12 hours, then bake in an atmosphere furnace at 550°C for 6 hours under N2 atmosphere, and cool down to room temperature for use.

[0072] (2) The first catalyst: Weigh 19.5g of cobaltous nitrate hexahydrate, 19.5g of nickel nitrate hexahydrate, 15.2g of ferric nitrate nonahydrate, and 7.6g of cerium nitrate hexahydrate, put them into a beaker with a volume of 500mL, and add an appropriate amount of Distilled water, stirred for 1 hour to completely dissol...

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Abstract

The invention discloses catalysts used for reducing petroleum coke sulfur content as well as a preparation method and application thereof, and relates to the technical field of catalysts. The catalysts used for reducing the petroleum coke sulfur content consist of a first catalyst and a second catalyst; the first catalyst is prepared by carrying out roasting inert atmosphere; the second catalyst is prepared by carrying out roasting in reduced atmosphere; in parts by weight, first active components comprise 0.5-5 parts of CoO, 5-15 parts of NiO, 0.1-3 parts of Fe(2)O(3) and 3-15 parts of a rare-earth metal oxide; and second active components comprise 3-15 parts of WO(3), 1-15 parts of MoO(3), 1-5 parts of NiO and 3-15 parts of a rare-earth metal oxide. Catalyst products prepared by the preparation method can act on raw petroleum of coking reaction, thereby significantly reducing sulfur content of petroleum coke in the process of coke formation.

Description

technical field [0001] The invention relates to the technical field of catalysts, and in particular to a catalyst for reducing the sulfur content of petroleum coke, a preparation method and application thereof. Background technique [0002] Petroleum coke is a product obtained by separating light oil from heavy oil through distillation, and then thermally cracking the heavy oil to transform the heavy oil. The amount of sulfur element is one of the important indicators to measure the quality of petroleum coke, and the sulfur content in petroleum coke mainly depends on the nature and sulfur content of raw materials. With the heavy and inferior quality of crude oil, the raw materials for delayed coking are becoming increasingly inferior. The sulfur content of petroleum coke increases, the quality deteriorates, and the price also falls, which greatly affects the economic benefits of delayed coking units and brings to a lot of environmental pressure. [0003] At present, in ord...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J23/888B01J37/08C10G27/00
CPCB01J23/83B01J23/8885B01J23/002B01J37/08C10G27/00C10G2300/202B01J2523/00B01J35/61B01J35/617B01J35/64B01J2523/3712B01J2523/842B01J2523/845B01J2523/847B01J2523/68B01J2523/69B01J2523/3706Y02P20/52
Inventor 李小苗齐文义宋业恒孟学峰左世伟黄延召陈千惠邓向军
Owner CHINA PETROLEUM & CHEM CORP
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