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A preparing method for an iron based catalyst

A technology of catalyst and catalyst carrier, which is applied in the field of coal chemical industry, can solve the problems of a large amount of waste water, and achieve the effects of reducing water consumption, easy operation, and short process flow

Active Publication Date: 2018-11-09
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main purpose of the present invention is to provide a method for preparing iron-based catalysts to solve the problem that the existing methods for preparing iron-based catalysts will produce a large amount of waste water

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  • A preparing method for an iron based catalyst

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preparation example Construction

[0022] As described in the background art, the existing methods for preparing iron-based catalysts have the problem of generating a large amount of waste water. In order to solve the above-mentioned technical problems, the present invention provides a method for preparing an iron-based catalyst. The active component of the iron-based catalyst is FeOOH. The preparation method comprises: loading an iron-containing soluble salt solution on the catalyst carrier by spraying, Obtain the primary product; react the alkaline aqueous solution with the primary product to obtain the secondary product; and optionally oxidize the above secondary product according to the valence state of the iron ion in the iron-containing soluble salt solution, and then obtain the iron-based product through crystal phase transformation. catalyst.

[0023] Specifically, in a preferred embodiment, when the iron ion in the iron-containing soluble salt is +2, the above preparation method includes: loading the i...

Embodiment 1

[0047] Preparation 4kg concentration is 20wt% ferrous sulfate solution and 0.4kg concentration is 15wt% ammonia solution. Weigh 15 kg of dry coal powder ground to a particle size of less than 150 μm and place it in a 50 L reactor, and start the reactor to stir so that the coal powder is in a state of rapid stirring. The ferrous sulfate solution is transported to the nozzle installed on the upper part of the reaction kettle through the metering pump for atomization, and the mist is sprayed on the surface of the stirred coal powder, and wait for 1 hour; then the ammonia solution is transported to the nozzle through the metering pump for atomization , the spray droplets are sprayed onto the surface of the pulverized coal being stirred. The nozzle diameter of the nozzle is 0.4mm, which can make most of the droplet diameter within 200μm. After spraying, the reactor was heated to 120°C, and at the same time, compressed air preheated to 100°C was passed through for 8 hours to oxidiz...

Embodiment 2

[0049] Preparation 3.5kg concentration is 25wt% ferric sulfate solution and 0.25kg concentration is 25wt% sodium carbonate solution. Weigh 15 kg of dry coal powder ground to a particle size of less than 150 μm and place it in a 50 L reactor, and start the reactor to stir so that the coal powder is in a state of rapid stirring. The ferrous sulfate solution and the ammonia solution are transported to the nozzle installed on the upper part of the reactor for atomization through the metering pump, and the mist is sprayed on the surface of the stirred coal powder, and wait for 1 hour; then the ammonia solution is transported to the nozzle through the metering pump Atomization is carried out, and the mist is sprayed onto the surface of the stirred coal powder. The nozzle diameter of the nozzle is 0.4mm, which can make most of the droplets within 200μm, and the droplets can be sprayed to the surface of the stirred coal powder. After spraying, the reactor was heated to 150°C, and at ...

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Abstract

The invention provides a preparing method for an iron based catalyst. An active component of the iron based catalyst is FeOOH. The preparing method includes the following steps: a soluble salt solution containing iron is supported catalyst on a catalyst carrier in a spray mode to obtain an initial product; an alkaline aqueous solution is reacted with the head product to obtain a secondary product;oxidation is optionally performed on the secondary product according to a valent state of iron ion in the soluble salt solution containing iron, and the iron based catalyst is obtained through crystal phase transition. Adopting the provided preparing method for the iron based catalyst is beneficial to reduce water consumption, waste water is not generated or less waste water is generated, and investment of the whole technology and the preparing cost are low.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a method for preparing an iron-based catalyst. Background technique [0002] my country's oil and natural gas resources are relatively short. In 2015, my country's dependence on foreign oil reached 60.6%. my country's coal resources accounted for 94% of the basic reserves of fossil energy. It is my country's energy situation to make full use of relatively abundant coal resources to make up for the shortage of oil and natural gas. objective requirements. However, in the face of increasingly harsh environmental problems, we must first solve the problem of how to cleanly convert and efficiently utilize coal. [0003] Coal direct liquefaction is a clean coal technology that converts coal into liquid products by allowing hydrogen to enter the molecular structure of coal and its derivatives with the help of hydrogen-donating solvents and catalysts under high temperature and high p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J37/02B01J37/14
CPCB01J23/745B01J37/0215B01J37/14
Inventor 谢晶舒歌平章序文杨葛灵王洪学高山松刘峰
Owner CHNA ENERGY INVESTMENT CORP LTD
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