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Iron-based coal liquefied catalyst and production thereof

A catalyst, coal liquefaction technology, applied in physical/chemical process catalysts, chemical instruments and methods, preparation of liquid hydrocarbon mixtures, etc. Liquid yield, simple and easy preparation method

Active Publication Date: 2009-02-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In recent years, the process of recycling waste lubricating oil is complicated and the cost of recycling is high. The reason is that in order to improve the performance of lubricating oil, it is necessary to add various additives to lubricating oil, such as: detergent, pour point depressant , oxidation inhibitors and viscosity coefficient enhancers; especially when standard state resin additives are added to the oil, in addition to impurities such as carbon, sludge, and worn metal, there are also impurities suspended in the engine oil produced by modern detergents impurities such as calcium and barium salts, ash-free based detergents, etc.
When recycling waste lubricating oil, only by effectively removing various impurities in the waste oil can it be recycled as lubricating oil base oil, which makes the recycling process more and more complicated and the recycling cost is getting higher and higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0022] A certain amount of coal, iron-containing substances and waste lubricating oil are ground in a ball mill for 3 hours, and the ground paste is sealed and kept at 60°C to prepare the catalyst of the present invention. The iron-containing material is pyrite (which contains 50 wt% ferrous sulfate), and the dry basis coal is Yunnan Xianfeng lignite. The total content of metal iron, magnesium, lead and zinc in the used waste lubricating oil is 0.15wt%. The content of each component in catalysts A to D is based on the total weight of dry coal and pyrite, see Table 1 for details.

Embodiment 5

[0024] The dry base coal used in this example is Yilan coal, and the rest of the raw materials and preparation process are the same as in Example 2 to obtain catalyst E.

Embodiment 5～8

[0030] Add the prepared catalyst to Shangwan coal for reaction, the reaction temperature is 440°C, the pressure is 14MPa, and the volume space velocity is 1.0h -1 , the reaction time is 1 hour, and the reaction result is as follows:

[0031] Table 2

[0032] Item Number

Example 6

Example 7

Example 8

Example 9

Example 10

Comparative example 2

Comparative example 3

catalyst

Catalyst A

Catalyst B

Catalyst C

Catalyst D

Catalyst E

Catalyst F

Synthetic

iron sulfide

Catalyst added

Amount, wt%

1％

5％

3％

5％

5％

5％

5％

liquid distillate

Yield, wt%

57.11

58.72

59.16

58.52

57.87

56.97

55.39

[0033] It ca...

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PUM

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Abstract

An iron-based coal liquefying catalyst with high activity to increase the output coal-liquefied oil is prepared from iron-contained substance, used lubricating oil and powdered coal.

Description

technical field [0001] The invention relates to a coal liquefaction catalyst and a preparation method thereof, in particular to an iron-based coal direct liquefaction catalyst and a preparation method thereof. Background technique [0002] The iron-based catalyst for direct coal liquefaction has the characteristics of high activity, low production cost, and no pollution. At present, the commonly used iron-based catalysts mainly include natural pyrite, pyrite and various smelting waste residues (such as hematite mud, the main component of which is Fe 2 o 3 ). Its particles are generally several microns to tens of microns, although the addition amount is as high as 3wt% of dry coal, but the catalytic efficiency is limited due to poor dispersion. [0003] U.S. Patent No. 3,775,286 discloses a coal hydrogenation method, which involves impregnating coal with an iron-containing solution, or mechanically mixing dry hydrated iron oxide powder with coal powder as a catalyst and ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J27/00C10G1/06
Inventor 李鹤鸣王军杨涛贾丽贾永忠杨光
Owner CHINA PETROLEUM & CHEM CORP