Iron alkali composite catalyst for direct liquefaction of coal

A composite catalyst, a technology for direct liquefaction of coal, used in physical/chemical process catalysts, preparation of liquid hydrocarbon mixtures, chemical instruments and methods, etc. The formation of asphaltenes and residues, the availability of raw materials, and the effect of good synergy

Inactive Publication Date: 2017-11-17
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no literature reports related to iron and alkali metal composite catalysts

Method used

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  • Iron alkali composite catalyst for direct liquefaction of coal
  • Iron alkali composite catalyst for direct liquefaction of coal
  • Iron alkali composite catalyst for direct liquefaction of coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0022] The catalyst prepared in Examples 1-5 is a supported composite catalyst FC1-5, and its preparation process is as follows: coal powder, iron salt solution, alkali solution and additives are mixed and stirred for reaction and then dried. The raw materials and conditions for its preparation are as follows:

[0023]

Embodiment 6-7

[0025] The catalyst prepared in Example 6-7 is a mixed composite catalyst FC6-7. Among them, FC6 is made by directly mixing iron hydroxide and sodium carbonate, and the molar ratio of sodium atom to iron atom is 0.1:1; FC7 is made by directly matching iron sulfate and potassium silicate, and potassium atom and iron atom The molar ratio of atoms is 0.2:1.

[0026] With the iron-alkali composite catalyst FC1-7 prepared in Examples 1-7 as the catalyst for direct liquefaction of coal, the direct liquefaction experiment of coal was carried out on a 500mL high-temperature and high-pressure reactor, and its experimental conditions and results are as follows:

[0027]

[0028] Note: Syngas refers to CO and H 2 Mixed gas (CO:H 2 =1.5:3.5); oil refers to n-hexane soluble matter; asphaltene refers to n-hexane-insoluble-tetrahydrofuran soluble matter; the conversion rate is equal to the sum of the yields of asphaltene, oil, gas and water.

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Abstract

The invention relates to an iron alkali composite catalyst for direct liquefaction of coal. The catalyst can be a loaded type or a mixed type. The loaded catalyst is prepared by loading an iron active component and an alkali active component on the surface of coal particles through chemical reactions. The mass ratio of water to dry coal powder is (0.5-5):1. The mass ratio of iron atoms in the iron salt solution to dry coal powder is (0.1-0.5):1. The mole ratio of additive to iron atoms in the iron salt solution is (0-0.1):1. The mole ration of alkaline metal atoms in the alkali solution to iron atoms in the iron salt solution is (0.001-5):1. The mixed type catalyst is prepared by directly mixing iron containing substances and alkali containing substances, wherein the mole ratio of alkaline metal atoms to iron atoms is (0.001-5):1. The catalyst is suitable for direct liquefaction of coals in different systems and is capable of prominently improving the coal conversion rate and yield of oil. Moreover, the raw materials are cheap and easily available. The preparation is simple. The catalyst has a very good application prospect.

Description

technical field [0001] The invention relates to a catalyst for direct coal liquefaction, in particular to a catalyst for direct coal liquefaction containing two main active components, iron and alkali. It belongs to the field of coal resource conversion. technical background [0002] my country's energy structure is rich in coal, poor in oil and little in gas, and the energy structure is unreasonable, which affects the development of my country's national economy to a certain extent. The current increase in oil consumption has further exacerbated the contradiction between domestic oil supply and demand. my country is rich in coal resources, but there is still a shortage of high-quality coal resources. A large amount of low-rank coal cannot be effectively utilized, resulting in waste of resources. How to transform and utilize this part of low-rank coal has become a research hotspot in the efficient and clean utilization of coal. [0003] Coal direct liquefaction technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/232C10G1/06
CPCB01J27/232C10G1/065
Inventor 吴诗勇吴幼青黄胜高晋生尚建选闵小建郑化安张生军徐婕
Owner EAST CHINA UNIV OF SCI & TECH
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