Method for producing low-condensation-point diesel oil and liquid paraffin by using coal tar

A technology for liquid paraffin and coal tar, which is applied in the recovery/refining of mineral wax, petroleum industry, processing of hydrocarbon oil, etc. Economic benefits and the effect of improving the utilization value

Active Publication Date: 2013-12-18
SHENMUFUYOU ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new method of utilizing coal tar resources to obtain high-quality liquid paraffin coal tar to produce low-point diesel oil and liquid paraffin, effectively solving the problem of high freezing point of coal tar hydrogenated diesel components

Method used

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  • Method for producing low-condensation-point diesel oil and liquid paraffin by using coal tar
  • Method for producing low-condensation-point diesel oil and liquid paraffin by using coal tar
  • Method for producing low-condensation-point diesel oil and liquid paraffin by using coal tar

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Taking the raw material as an example of 500-700°C low-temperature coal tar produced during coal gasification, coking or semi-coke production, the method for producing low-point diesel and liquid paraffin is realized by the following steps:

[0027] (1) Mild hydrofining of coal tar

[0028] Coal tar and hydrogen are mixed and then mildly hydrogenated and refined in a hydrogenation reactor under the catalysis of a molybdenum-nickel catalyst. Airspeed is 0.7h -1 , to obtain hydrorefining oil;

[0029] The molybdenum-nickel catalyst in this example is the RDM-2 catalyst developed by Beijing Petroleum Science Research Institute (http: / / www.qmchj.com / products_detail / &productId=6.html), which is based on aluminum oxide As a carrier, the content of molybdenum trioxide in the catalytically active metal is 10wt%, the content of nickel oxide is 2wt%, the total pore volume is greater than 0.6mL / g, and the specific surface area is greater than 100m 2 / g.

[0030] (2) Fractional...

Embodiment 2

[0047] Taking the medium and low temperature coal tar produced in the process of coal gasification, coking or semi-coke as the raw material as an example, the method for producing low-point diesel oil and liquid paraffin is realized by the following steps:

[0048] (1) Mild hydrofining of coal tar

[0049] Coal tar and hydrogen are mixed and then mildly hydrogenated and refined in a hydrogenation reactor under the catalysis of a molybdenum-nickel catalyst. Airspeed is 0.65h -1 , to obtain hydrorefining oil;

[0050]The molybdenum-nickel catalyst in this example is the FZC-204 catalyst developed by Fushun Petrochemical Research Institute (http: / / www.sinopec-catalyst.com / product / detail / id / 28.html), which is based on Aluminum oxide is used as the carrier, the content of molybdenum trioxide in the catalytically active metal is 15wt%, the content of nickel oxide is 4wt%, the total pore volume is greater than 0.6mL / g, and the specific surface area is greater than 100m 2 / g.

[0...

Embodiment 3

[0056] In the above-mentioned Examples 1-2, step (1) is to mix coal tar and hydrogen and carry out mild hydrogenation refining under the catalytic action of molybdenum-nickel catalyst in the hydrogenation reactor. The reaction temperature is 320°C and the reaction pressure is is 9MPa, the volume ratio of hydrogen to oil is 950:1, and the liquid volume space velocity is 0.8h -1 , to obtain hydrofining to generate oil; the molybdenum-nickel type catalyst used is based on aluminum oxide as a carrier, and the content of molybdenum trioxide in its catalytically active metal is 6wt%, the content of nickel oxide is 1wt%, and the total pore volume is greater than 0.6mL / g, the specific surface area is greater than 100m 2 / g. Step (3) is to mix isopropanol, urea and water to form urine, saturate the urine at 60°C in the reactor, add diesel oil at a volume ratio of 1:3.5, stir, and decomplex The wax was reacted for 1.5 hours, and the final temperature of the reaction was 30°C. After s...

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Abstract

The invention relates to a method for producing low-condensation-point diesel oil and liquid paraffin by using coal tar. The method comprises the steps of mild hydrofining of the coal tar, fractionation of a hydrogenated product, urea complexation dewaxing of diesel oil fraction and decomposition of a urea complex, so that the low-concentration-point diesel oil and the liquid paraffin are prepared. According to the method, the cola tar is processed by adopting a mild hydrofining-dewaxing coupling technique, so that the obtained low-condensation-point diesel oil and liquid paraffin have good quality; the low-concentration-point diesel oil meets the standard on 50# diesel oil of GB / T19147-2003 Automotive Diesel Fuel, and can be used in alpine regions; the liquid paraffin meets the standard of SH / T0416-1992 Heavy Liquid Paraffin, and utilizes the coal tar source more reasonably. The method for producing the low-condensation-point diesel oil and the liquid paraffin by using the coal tar efficiently solves the problem that the concentration point of the coal tar hydrogenated diesel oil component is relatively high, prolongs a hydrogenation industry chain of the coal tar, improves use value of the coal tar, is suitable for industrial application, and increases economic benefits greatly.

Description

technical field [0001] The invention belongs to the technical field of coal tar processing, in particular to a method for producing low-condensation diesel oil and liquid paraffin from coal tar. Background technique [0002] In recent years, the contradiction between the shortage of oil and gas resources in my country and the rapid development of the national economy has become increasingly prominent. my country has abundant coal reserves, and promoting the development of coal-based diversified energy sources has become an important means for my country to adjust and optimize its energy structure. Among them, the use of coal pyrolysis, coking or gasification by-products of coal tar through hydrogenation and upgrading to produce light fuel technology can not only effectively alleviate the energy situation of shortage of petroleum resources, but also fully improve the comprehensive utilization value of coal tar, and Solve the problems of environmental pollution caused by the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/04C10G73/24C10G73/22
Inventor 杨占彪王树宽
Owner SHENMUFUYOU ENERGY TECH
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