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Method for producing clean diesel oil

A diesel and clean technology, applied in chemical instruments and methods, hydrocarbon oil treatment, petroleum industry, etc., can solve the problems of harsh operating conditions, short service life of catalysts, low space velocity, etc., to achieve long-term operation and prolong the operation cycle Effect

Active Publication Date: 2020-10-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for producing clean diesel oil on the basis of the prior art, so as to solve the problems of harsh operating conditions, low space velocity and short service life of the catalyst in the production of ultra-low sulfur clean diesel oil in the prior art

Method used

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  • Method for producing clean diesel oil
  • Method for producing clean diesel oil
  • Method for producing clean diesel oil

Examples

Experimental program
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Embodiment approach

[0015] The inventors of the present invention found in research that introducing a carboxylic acid compound into a hydrofinishing catalyst can protect the active components of the hydrofinishing catalyst and improve the activity of the hydrofinishing catalyst. Therefore, as long as the carboxylic acid is introduced into the hydrofinishing catalyst, the effect of protecting the active components of the hydrofinishing catalyst and improving the activity of the hydrofinishing catalyst can be achieved, and there is no particular limitation on the added amount. According to a preferred embodiment of the present invention, the dry basis weight ratio of the carboxylic acid to the inorganic refractory component is 0.1-0.8:1, preferably 0.2-0.6:1.

[0016] Preferably, the carboxylic acid is selected from C1-18 monobasic saturated carboxylic acids (for example, C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15 , C16, C17, C18 monobasic saturated carboxylic acids) (such as...

preparation example 1

[0065] This preparation example is used to illustrate the preparation process of the hydrotreating catalyst S1 used in the present invention.

[0066] (1) commercially available white carbon black (specific surface area is 220m 2 / g, the average pore diameter is 12.7nm), mixed with basic cobalt carbonate powder, and then fired at 400°C for 3h to obtain cobalt-containing inorganic refractory powder.

[0067] Wherein, the amount of basic cobalt carbonate used corresponds to the content of cobalt (calculated as cobalt oxide) in the catalyst being 22.0% by weight.

[0068] (2) A certain amount of MoO 3 Add basic cobalt carbonate and citric acid into the aqueous solution containing phosphoric acid respectively, and dissolve them completely under heating and stirring to obtain an impregnating solution containing active metals.

[0069] Wherein, the mass of citric acid is 20% by weight of the mass of the inorganic refractory component.

[0070] (3) Mix the impregnating solution an...

preparation example 2

[0074] This preparation example is used to illustrate the preparation process of the hydrotreating catalyst S2 used in the present invention.

[0075] (1) commercially available white carbon black (specific surface area is 220m 2 / g, the average pore diameter is 12.7nm), and basic nickel carbonate powder are mixed evenly, and then fired at 700°C for 4h to obtain nickel-containing inorganic refractory powder.

[0076] Wherein, the amount of basic nickel carbonate used corresponds to the content of nickel (calculated as nickel oxide) in the catalyst being 15.0% by weight.

[0077] (2) A certain amount of MoO 3 , basic nickel carbonate, and acetic acid are respectively added to the aqueous solution containing phosphoric acid, and heated and stirred until they are completely dissolved to obtain an impregnating solution containing active metals.

[0078] Wherein, the mass of acetic acid is 30% by weight of the mass of the inorganic refractory component.

[0079] (3) Mix the impr...

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Abstract

The invention relates to the technical field of oil refining, and discloses a method for producing clean diesel oil. The method comprises the following steps: a diesel raw material and hydrogen are subjected to a contact reaction with a hydrofining catalyst in a first reaction zone to obtain a first reaction zone effluent; the first reaction zone effluent enters a second reaction zone without separation, the first reaction zone effluent and a hydro-upgrading catalyst are subjected to a contact reaction in the second reaction zone to obtain a second reaction zone effluent, and the second reaction zone effluent is subjected to fractionation, wherein the distillation range of the diesel oil raw material is 140-390 DEG C, the sulfur content is 1000-15000 [mu] g / g, the nitrogen content is 50-3000 [mu] g / g, and the aromatic hydrocarbon content is 10-80 wt%. According to the method provided by the invention, the ultra-low sulfur diesel oil with polycyclic aromatic hydrocarbon content of lessthan 7% and sulfur content of less than 10 [mu] g / g can be produced by using the specific hydrofining catalyst, the whole operation period of the device can be effectively prolonged, and long-period operation is realized.

Description

technical field [0001] The invention relates to the technical field of oil refining, in particular to a method for producing clean diesel oil. Background technique [0002] As people pay more and more attention to the quality of the ecological environment, the production of clean diesel has received more and more attention. In recent years, new fuel standards and environmental protection regulations in many countries in the world have set increasingly strict standards for vehicle diesel. EU countries have implemented the Euro 4 emission standard with a sulfur content of less than 50 μg / g in light diesel oil for vehicles in 2005, and implemented the Euro 5 emission standard with a sulfur content of less than 10 μg / g in 2009. my country has implemented the National V diesel standard with a sulfur content of less than 10 μg / g in 2017. Although diesel product specifications vary from country to country, ultra-low-sulfur and low-aromatic diesel with lower sulfur content and pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04B01J27/19B01J35/10
CPCC10G65/04B01J27/19C10G2400/04B01J35/615B01J35/647
Inventor 葛泮珠丁石习远兵鞠雪艳陈文斌
Owner CHINA PETROLEUM & CHEM CORP
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