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Method for separating and reclaiming spent iron based catalyst and heavy hydrocarbon through Fischer-Tropsch Synthesis in slurry bed

A Fischer-Tropsch synthesis, separation and recovery technology, which is applied to the recovery of liquid hydrocarbon mixtures, liquid solution solvent extraction, refined hydrocarbon oil, etc., can solve the problems of separation and recovery methods without literature reports, etc., achieve good economic benefits, short process flow, and method simple effect

Inactive Publication Date: 2005-01-12
SYNFUELS CHINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to literature research, there is no literature report on the separation and recovery of industrial slurry bed Fischer-Tropsch synthesis spent catalysts and heavy hydrocarbons.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Take the unloaded waste Fe / Cu / K / SiO 2 The mixture of catalyst and heavy hydrocarbon, solid content analysis results: spent catalyst 19.8%, heavy hydrocarbon 80.2%.

[0028] 2. Put 100 kg of waste Fe / Cu / K / SiO 2 Put the mixture of catalyst and heavy hydrocarbon into the reaction kettle with heating, stirring and reflux device, then add 200 kg of light liquid paraffin with an initial boiling point of 210°C as solvent, turn on the stirring when it is heated to 70°C, and then continue Heating to 120°C and stirring at this temperature for 100 minutes, so that heavy hydrocarbons and light liquid paraffin with an initial boiling point of 210°C are fully miscible.

[0029] 3. Stand still and settle at 100° C. for 60 minutes, separate solid and liquid, and discharge 225 kilograms of mixed liquid of light liquid paraffin and heavy hydrocarbon in the upper layer.

[0030] 4. Add 80 kg of light liquid paraffin with an initial boiling point of 210° C. into the reactor again, hea...

Embodiment 2

[0038] 1. Take the waste Fe / Mn / K / SiO unloaded from the slurry bed 2 Catalyst, solid content analysis results: spent catalyst 31.5%, heavy hydrocarbon 68.5%.

[0039] 2. 150 kg of waste Fe / Mn / K / SiO 2 Put the mixture of catalyst and heavy hydrocarbon into the reaction kettle with heating, stirring and reflux device, then add 600 kg of light liquid paraffin with an initial boiling point of 210°C as solvent, turn on the stirring when it is heated to 80°C, and then continue Heating to 140°C and stirring at this temperature for 75 minutes to make heavy hydrocarbons fully miscible with light liquid paraffin with an initial boiling point of 210°C.

[0040] 3. At 80° C., leave it to settle for 30 minutes, separate the solid and liquid, and discharge 643 kilograms of mixed liquid of light liquid paraffin and heavy hydrocarbons in the upper layer.

[0041] 4. Add 120 kg of light liquid paraffin with an initial boiling point of 210° C. in the reactor again, heat to 140° C., and stir for...

Embodiment 3

[0049] 1. Take the waste Fe / Mn / Cu / K / SiO unloaded from the slurry bed 2 Catalyst, solid content analysis results: spent catalyst 17.6%, heavy hydrocarbon 82.4%.

[0050] 2. 180 kg of waste Fe / Mn / Cu / K / SiO 2 Put the mixture of catalyst and heavy hydrocarbon into the reaction kettle with heating, stirring and reflux device, then add 450 kg of light liquid paraffin with an initial boiling point of 210°C as solvent, turn on the stirring when it is heated to 90°C, and then continue Heating to 160°C and stirring at this temperature for 60 minutes to make heavy hydrocarbons fully miscible with light liquid paraffin with an initial boiling point of 210°C.

[0051] 3. Stand still and settle at 110° C. for 55 minutes, separate solid and liquid, and discharge 500 kilograms of mixed liquid of light liquid paraffin and heavy hydrocarbon in the upper layer.

[0052] 4. Add 100 kg of light liquid paraffin with an initial boiling point of 210° C. to the reactor again, heat to 160° C., and sti...

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Abstract

A method for recovering waste iron-base catalyst and heavy hydrocarbon includes extracting and separating mixer of waste iron-base catalyst and heavy hydrocarbon with high liquid paraffin having initial distillation point of 210 deg.C for three to four times for achieving purpose of separating catalyst from heavy hydrocarbon. The recovered waste iron-base catalyst is to be buried underground and the recovered mixer of light liquid paraffin and heavy hydrocarbon can be directly used to produce oil product or sent back to fluid bed reactor for being reutilized as reaction media.

Description

technical field [0001] The present invention relates to a method for separating and recovering catalysts and heavy hydrocarbons, in particular to a method for separating and recovering waste iron-based catalysts and heavy hydrocarbons unloaded from reactors after the completion of industrial slurry bed Fischer-Tropsch synthesis reaction . Background technique [0002] From syngas (CO+H 2 ) The process of generating hydrocarbons under the action of catalyst is called Fischer-Tropsch synthesis reaction. Iron-based and cobalt-based catalysts are currently the two most widely used industrial catalysts for Fischer-Tropsch synthesis. Iron-based catalysts are suitable for Fischer-Tropsch synthesis of coal-based syngas with low hydrogen-to-carbon ratio (molar ratio 0.5-1.2), and cobalt-based catalysts are suitable for Fischer-Tropsch synthesis of natural gas-based syngas (molar ratio 2). [0003] Fischer-Tropsch synthesis can be carried out in reactors such as fixed bed, fluidize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/04C10G5/00C10G7/08C10G21/14
Inventor 白亮郝庆兰侯文娟田磊相宏伟李永旺
Owner SYNFUELS CHINA TECH CO LTD
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