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High-dispersion iron catalyst by direct coal hydrogenation liquefaction

A hydrogenation liquefaction and catalyst technology is applied in the field of highly dispersed iron-based catalyst products and high-dispersion iron-based catalysts. Effect

Inactive Publication Date: 2006-05-31
CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Scientists from various countries have also tried many other methods to obtain iron-based catalysts with highly dispersed ultrafine particles, but due to the high cost of preparation, it is difficult to produce on a large scale

Method used

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  • High-dispersion iron catalyst by direct coal hydrogenation liquefaction
  • High-dispersion iron catalyst by direct coal hydrogenation liquefaction
  • High-dispersion iron catalyst by direct coal hydrogenation liquefaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The catalyst listed in this example is a coal direct liquefaction catalyst sample obtained by using a Chinese bituminous coal as the carrier of the catalyst and using ferrous sulfate as the main raw material. Concrete steps are: get 5.7 kilograms of ferrous sulfate heptahydrate, add 46.88 kilograms of tap water to dissolve, then join in 15.78 kilograms of coal dust, stir to obtain ferrous sulfate coal slurry, get 2.55kg ammoniacal liquor and join in 34.77 kilograms of tap waters in addition. Under stirring, add 2 / 5 of the above-mentioned amount of ammonia water into the above-mentioned ferrous sulfate coal slurry, and continue stirring for 10 seconds after adding. The above reaction product was placed at 40°C in 3m 3 Oxidation under the air flow rate of / h, after the oxidation reaction is completed, centrifugal filtration is carried out, and the obtained filter cake is the catalyst of the present invention. The appearance of the catalyst is black particles, see attache...

Embodiment 2

[0025] The catalyst listed in this example is a kind of Chinese bituminous coal as the carrier for the preparation of the catalyst and a ferrous iron salt as the main raw material to obtain a highly dispersed and disposable iron-based catalyst for direct coal hydrogenation to liquefaction. The appearance of this catalyst sample is also black powdery fine particles, see attached image 3 . under a scanning electron microscope at 80,000 magnification image 3 The observation of the morphological characteristics of the catalyst samples shown shows that the size of most of the catalyst active components is about 100nm in length and 40nm in width, see attached Figure 4 . Analysis of the catalyst also showed that the catalyst sample had a Fe content of 7 wt%, a dry coal content of 89 wt%, and a moisture content of 4 wt%.

[0026]

Embodiment 3

[0028] The catalyst samples listed in this example use a kind of Chinese lignite as the carrier for the preparation of the catalyst, and use ferrous iron salt as the main raw material to obtain a highly dispersed and disposable iron-based catalyst for direct hydrogenation liquefaction of coal. The appearance of the catalyst is dark brown powdery fine particles, see attached Figure 5 . attached Figure 6 is true Figure 5 The photo of the morphology of the catalyst shown is observed under a scanning electron microscope at a power of 40,000. The results show that the size of most active components of the catalyst is about 100nm in length and about 40nm in width. Analysis of the catalyst product also showed an Fe content of 5 wt%, a dry coal content of 60 wt%, and a moisture content of 35 wt%.

[0029]

[0030] The above three examples all show that compared with the finely ground pyrite catalyst, the catalyst of the present invention has the characteristics of less...

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Abstract

A hydrogenation liquefied high-dispersion iron catalyst from coal consists of active component gamma-FeOOH with Fe content 1í½15wt%(dry base), carrier coal 50í½90wt%(dry base) and impurity water residue. The gamma-FeOOH is distributed in liquefied coal with strip shape, grain size range 60í½200nm and width 20í½100nm. It is cheap, high efficient and easy storage, has small size, high catalyst activity and various resources.

Description

technical field [0001] The invention discloses a highly dispersed iron-based catalyst for direct coal hydrogenation liquefaction, belonging to the field of coal chemical processing, specifically, a highly dispersed iron-based catalyst product for direct coal hydrogenation liquefaction. Background technique [0002] my country is relatively rich in coal resources, but relatively short in oil resources. Domestic oil consumption is growing rapidly, and my country's oil resources can no longer meet the needs of growing oil consumption. Since my country became a net oil importer in 1993, my country's oil imports have increased year by year. In 2003, my country's oil imports, including crude oil and refined oil, exceeded 100 million tons. my country's development of direct coal liquefaction technology and the realization of the industrialization of direct coal liquefaction is one of the ways to solve my country's oil shortage. [0003] Coal direct liquefaction is a process in wh...

Claims

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Application Information

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IPC IPC(8): C10G1/06
Inventor 李文博舒歌平李克健霍卫东史士东杜淑凤何平王雨朱晓苏
Owner CHINA COAL RES INST
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