Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of recovery method of Fischer-Tropsch synthesis iron series catalyst

A recovery method and a technology of Fischer-Tropsch synthesis, applied in the direction of carbon compound catalysts, catalysts, chemical instruments and methods, etc., can solve problems such as complex products, difficulty in pure catalysts, and complex surface properties of spent catalysts

Active Publication Date: 2020-12-15
CHINA UNIV OF MINING & TECH (BEIJING)
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex products of Fischer-Tropsch synthesis, there are many considerations for the selection of suitable solvents and the control of extraction conditions, which are also relatively complicated; in addition, the surface of spent catalysts also includes other reaction aids, especially inorganic filter aids Existence of the spent catalyst adheres to the liquid hydrocarbons and wraps on the surface of the spent catalyst, resulting in more complex surface properties of the spent catalyst, making it difficult to recover the pure catalyst

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of recovery method of Fischer-Tropsch synthesis iron series catalyst
  • A kind of recovery method of Fischer-Tropsch synthesis iron series catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The recovery method of the Fischer-Tropsch synthesis iron-based catalyst of the present embodiment comprises the following steps:

[0028] (1) Add ethyl acetate, cyclohexane and morpholine sequentially to the waste catalyst raw material, the heating temperature of the first stage is 60-100°C, the heating rate is 15°C / hour, and the heating temperature of the second stage is 100-100°C 140°C, the heating rate is 20°C / hour, the heating temperature of the third stage is 140-200°C, the heating rate is 20°C / hour, the stirring rate is 200r / min, and the extraction is carried out, and the organic solvent will remove the waste catalyst raw material surface The hydrocarbon compound is dissolved and extracted to leave the mixture system to obtain the intermediate treatment product A;

[0029] Wherein, the volume mass ratio of ethyl acetate to the spent catalyst raw material is 100mL: 1mg, the volume mass ratio of cyclohexane to the spent catalyst raw material is 100mL: 1mg, and the ...

Embodiment 2

[0050] The recovery method of the Fischer-Tropsch synthesis iron-based catalyst of the present embodiment comprises the following steps:

[0051] (1) Add ethyl acetate and morpholine sequentially to the waste catalyst raw material, the heating temperature of the first stage is 60-100°C, the heating rate is 15°C / hour, the heating temperature of the second stage is 100-140°C, and the heating The rate is 20°C / hour, the heating temperature of the third stage is 140-200°C, the heating rate is 20°C / hour, the stirring rate is 200r / min, and the extraction is carried out, and the organic solvent dissolves the hydrocarbon compounds on the surface of the spent catalyst raw material And extract and leave the mixture system to obtain intermediate treatment A;

[0052] Wherein, the volume mass ratio of ethyl acetate to the spent catalyst raw material is 100mL: 1mg, and the volume mass ratio of morpholine to the spent catalyst raw material is 70mL: 1mg.

[0053] Other steps in this embodime...

Embodiment 3

[0055] The recovery method of the Fischer-Tropsch synthesis iron-based catalyst of the present embodiment comprises the following steps:

[0056] (1) Add cyclohexane and morpholine sequentially to the waste catalyst raw material, the heating temperature of the first stage is 60-100°C, and the heating rate is 15°C / hour, the heating temperature of the second stage is 100-140°C, and the heating The rate is 20°C / hour, the heating temperature of the third stage is 140-200°C, the heating rate is 20°C / hour, the stirring rate is 200r / min, and the extraction is carried out, and the organic solvent dissolves the hydrocarbon compounds on the surface of the spent catalyst raw material And extract and leave the mixture system to obtain intermediate treatment A;

[0057] Wherein, the volume mass ratio of cyclohexane to the spent catalyst raw material is 100 mL:1 mg, and the volume mass ratio of morpholine to the spent catalyst raw material is 70 mL:1 mg.

[0058] Other steps in this embodi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a recovery method for Fischer-Tropsch synthesis iron-based catalysts. The recovery method includes the following steps: (1) Mix an organic solvent with waste catalyst raw materials, and perform extraction under the conditions of heating and stirring. The organic solvent will The hydrocarbon compounds on the surface of the spent catalyst raw material are dissolved and extracted from the mixture system to obtain the intermediate treatment product A; (2) Add carboxylic acid and polar solvent to the intermediate treatment product A, and under the conditions of heating and stirring, the carboxylic acid The acid dissolves the inorganic matter and small molecule organic matter in the intermediate treatment product A to obtain the intermediate treatment product B; (3) Heat the intermediate treatment product B obtained in step (2) at 100-250°C for 3-4 hours to obtain dry Material; (4) After mixing the dry material with the magnetic separation medium, perform magnetic separation to obtain the recovered iron-based catalyst.

Description

technical field [0001] The invention belongs to the technical field of catalyst recovery, and in particular relates to a recovery method of a Fischer-Tropsch synthesis iron-based catalyst. Background technique [0002] With the development of coal chemical industry technology, the production of valuable hydrocarbons after coal gasification and liquefaction is an important part of coal chemical industry. Fischer-Tropsch synthesis is one of the technologies for indirect coal liquefaction, which has mature industrial applications. Fischer-Tropsch synthesis is a synthetic reaction in which synthetic gas (carbon monoxide and hydrogen) is used as a raw material to synthesize hydrocarbon-based liquid fuels under the action of a catalyst. The catalysts are mainly iron-based catalysts. In order to save resources and costs, those skilled in the art have conducted a lot of research on the recovery and utilization of catalysts. Due to the special nature of the Fischer-Tropsch synthesi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745C07C1/04C07C11/06C10G2/00
CPCB01J23/745C07C1/044C10G2/332C07C2523/745C10G2300/706B01J35/33C07C11/06Y02P20/52Y02E50/30
Inventor 刘红缨杨玉立解维伟秦子敬段毓达欧阳宇汪文静郭其伟
Owner CHINA UNIV OF MINING & TECH (BEIJING)