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Hydrogenation for processing and utilizing coal tar

A technology for coal tar and hydrogenation reaction, which is applied in the direction of refining tar by chemical method, etc., can solve the problems of not considering the utilization of coal residue oil and the low utilization rate of coal tar resources, and achieves easy condensation of green coke, easy processing, and hydrogenation. active effect

Inactive Publication Date: 2007-11-21
大连圣安煤化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the invention does not consider the utilization of coal residue oil, the utilization rate of coal tar resources is low

Method used

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  • Hydrogenation for processing and utilizing coal tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0047] The coal tar raw materials are processed under different operating conditions, and the middle distillate oil is not fed into the second-stage hydrogenation reactor of the hydrogenation unit for further processing. The properties of the raw materials used are shown in Table 1. The objective function of the processing is that the hydro-modified pitch meets the indicators of carbon fiber raw materials: softening point: 118-124°C; coking value: 50-52°C; toluene insoluble matter: 5-10%; quinoline insoluble matter: 0.02- 0.04%; Ash: 0.01-0.06%; Sulfur: 0.5-2.5%.

[0048] Density (20℃), g / cm 3

[0049] * IBP refers to the initial boiling point of oil

[0050] * EBP refers to the final boiling point of oil

[0051] The specific operation process is shown in Figure 1. The filling scheme of the reactor catalyst is to install the hydrogenation protective agent on the upper part, the molybdenum oxide content is 8.0%, the nickel oxide content is 1.7%, the pore volume is 0.58m...

Embodiment 5-8

[0058] The coal tar raw materials are processed under different operating conditions, and the middle distillate oil enters the second-stage hydrogenation reactor of the hydrogenation unit for processing. The operating conditions of the one-stage hydrogenation reactor of the coal tar feedstock hydrogenation unit and the properties of the raw materials used are the same as those in Examples 1-4. The operating conditions of the two-stage hydrogenation reactor of the hydrogenation unit and the properties of the produced oil are shown in Table 6.

[0059] The specific operation process is shown in Figure 1. The two-stage hydrogenation reactor catalyst of the hydrogenation unit is filled with a special hydrogenation catalyst for coal tar. The catalyst has a tungsten oxide content of 19%, a molybdenum oxide content of 9%, a nickel oxide content of 5%, and a pore volume of 0.32ml / g, the specific surface is 180m 2 / g.

[0060] Example

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Embodiment 9

[0068] The difference from Examples 1-4 is that the filling scheme of the hydrogenation protective agent and catalyst in the reactor is:

[0069] The upper part is equipped with hydrogenation protective agent, the content of molybdenum oxide is 16.0%, the content of nickel oxide is 0.5%, the rest is support alumina, the pore volume is 0.95ml / g, and the specific surface area is 250m 2 / g, the filling amount is 15% of the total volume of the catalyst.

[0070] The rest are filled with special hydrogenation catalyst for coal tar, the support is silica-containing alumina, and the nature of the support: pore volume 1.0~1.3cm 3 , The specific surface area is greater than 350m 2 ·G -1 , SiO 2 The content is 9.0~12.0m%; the tungsten oxide content of the catalyst is 27m%, the molybdenum oxide content is 10m%, the nickel oxide content is 8m%, the pore volume is 0.50ml / g, and the specific surface area is 182m. 2 / g.

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Abstract

Hydrogenation for processing and utilizing coal tar is carried out by dewatering for coal tar raw material to water content<0.05%, removing mechanical impurities to obtain purified coal tar raw material, mixing cal tar with hydrogen at 300-427 degree, 10.0-17.0 MPa and 0.15-1.0h-1 liquid volume air speed, hydrogenation reacting to obtain gas-phase and liquid-phase products under hydrogenation protector and loaded hydrogenation catalyst existence, in proportion of hydrogen: coal tar=1000:1-3500:1, and fractioning to obtain gasoline, middle fraction oil and modified coal asphalt. It's reasonable and flexible and has high supplementary value.

Description

Technical field [0001] The invention relates to the processing and utilization of coal tar, in particular to a method for processing and utilizing coal tar by adopting hydrogenation technology. Background technique [0002] With the development of the world economy, especially the economies of developing countries, the demand for liquid motor fuel is also increasing. At present, due to the comprehensive influence of many factors, the price of oil has increased very greatly, which provides a good profit margin for the production of liquid motor fuel from coal, and thus the related technology has been developed very rapidly. There are three main ways to produce liquid motor fuel from coal, all of which are relatively mature technologies, including: direct coal liquefaction, indirect coal liquefaction, and coal dry distillation to produce coal tar. [0003] Among the above three kinds of coal-based synthetic oils, the clean utilization of coal tar produced by coal retort is the most...

Claims

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Application Information

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IPC IPC(8): C10C1/20
Inventor 邱长春韩和文沈和平于洋
Owner 大连圣安煤化工有限公司
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