Process for producing fuel oil from coal tar

A technology for fuel oil and coal tar, which is used in tar processing, petroleum industry, hydrotreating technology, etc. Problems such as low yield, to achieve the effect of convenient commercial production and application, moderate operating conditions, and low catalyst cost

Inactive Publication Date: 2005-09-07
内蒙古博源工程有限责任公司
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AI Technical Summary

Problems solved by technology

There are several deficiencies in this scheme. First, the yield of distillate oil is relatively low; second, indicators such as residual oi

Method used

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  • Process for producing fuel oil from coal tar

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Embodiment Construction

[0012] Composition and properties of the coal tar that present embodiment adopts:

[0013] Coal tar is underwater tar, density at 20°C > 1.0g / cm 3 , higher viscosity, kinematic viscosity at 50°C≮200mm 2 / s basically belongs to heavy oil or oil-mixed coal slurry. The residual carbon and ash are also relatively high, respectively ≮5.0% and ≮0.2%, the sulfur content is less than 0.5%, which belongs to low-sulfur coal tar, and the nitrogen and oxygen contents are relatively high, respectively ≮3.4% and ≮4.0%. H / C atomic ratio ≮1.2, higher than ordinary crude oil, belonging to heavy oil. Distillate composition is unstable, coal tar is distilled at true boiling point under atmospheric pressure and reduced pressure, and the distillate of <100°C fraction is very little, and the distillate amount is ≯10% (including moisture ≤4%); the distillate amount of 100~210°C fraction≯ 5%, this fraction belongs to phenol oil; 210℃~230℃ fraction distillate ≯8%, this fraction belongs to naphthale...

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Abstract

A process for preparing fuel oil with coal oil, relating to the method of retarding charring by using coal oil and the hydrogenation process, comprising retarding the coal oil charring at temperature 500~520 DEG C and pressure 0.22~ 0.26 MPa; controlling the quantity of filling water during the process, in proportion 3~10% of the waterless coal oil by weight, and getting fuel oil, liquid gas and coke products. The fuel oil needs further hydrofining to improve the quality of products; the hydrogenation temperature is 350~400 DEG C, pressure is 6.0~8.0, pitot is 0.5~3.0/h, the proportion between hydrogen and oil is 1000~1300:1; fractionating the hydrofined oil products and getting the product fitting national standard 90.

Description

Technical field: [0001] A process for preparing fuel oil from coal tar relates to a method for producing fuel oil through delayed coking and hydrogenation processes by using coal tar. Background technique: [0002] my country is a country rich in coal and low in oil, and oil resources are increasingly in short supply with the expansion of the people's growing consumption demand. Countries around the world are also actively looking for alternative energy sources of petroleum. Coal and coal chemical products can obtain cheap petroleum substitutes by hydrogenation or decarbonization. At present, the methods of producing fuel oil from coal resources include direct coal liquefaction, indirect liquefaction, and deep processing of coal tar (including oil-mixed coal-water slurry). Coal tar to fuel oil method, although there are mature technology at home and abroad, but there are high requirements for raw material oil and limited sources, the yield of liquid products obtained is low...

Claims

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Application Information

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IPC IPC(8): C10C1/00C10G67/00
Inventor 戴连荣贺占海刘忠易张培文贾栓马玉东张立新
Owner 内蒙古博源工程有限责任公司
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