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Method for regenerating and recycling oxygen-containing adsorbent in fixed bed regeneration device

A regeneration device and oxygen adsorbent technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, refined hydrocarbon oil, etc., can solve the problems of high cost of adsorbent, poor mechanical strength, small adsorption capacity, etc. Production cost, the effect of prolonging the service life

Active Publication Date: 2022-05-13
INNER MONGOLIA YITAI COAL BASED NEW MATERIALS RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The removal efficiency is low, the adsorption capacity is small, and the recycling performance is poor;
[0005] (2) The process is complicated and the energy consumption is high;
[0006] (3) The cost of the adsorbent is high and the mechanical strength is poor

Method used

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  • Method for regenerating and recycling oxygen-containing adsorbent in fixed bed regeneration device
  • Method for regenerating and recycling oxygen-containing adsorbent in fixed bed regeneration device
  • Method for regenerating and recycling oxygen-containing adsorbent in fixed bed regeneration device

Examples

Experimental program
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Effect test

Embodiment 1

[0078] This embodiment provides a method for regeneration and recycling of an oxygen-containing adsorbent in a fixed bed regeneration device, specifically as follows:

[0079] (1) Pretreatment of adsorbent

[0080] Take the 13X molecular sieve adsorbent and lay it flat in the special firing pool of the muffle furnace. The amount of each roasting is about 30g, and the particle size of the adsorbent is 0.85-1.15m. The adsorbent was calcined at 700°C for 6 hours (the heating rate of the muffle furnace was 5°C / min), and when the temperature in the muffle furnace was naturally lowered to 150°C, it was taken out and placed in a desiccator for later use.

[0081] (2) Adsorbent filling

[0082] The filling capacity of the fixed bed adsorption tube is 45.2g, and the filling volume is 70.6mL. The upper and lower sides of the adsorbent bed are filled with quartz wool.

[0083] (3) Calibration of real feed pump

[0084] The first-class water is used as the calibration medium, and the ...

Embodiment 2

[0094] This embodiment provides a method for regeneration and recycling of an oxygen-containing adsorbent in a fixed bed regeneration device, specifically as follows:

[0095] (1) Pretreatment of adsorbent

[0096] Take the 13X molecular sieve adsorbent and lay it flat in the special firing pool of the muffle furnace. The amount of each roasting is about 30g, and the particle size of the adsorbent is 0.85-1.15m. The adsorbent was calcined at 700°C for 6 hours (the heating rate of the muffle furnace was 5°C / min), and when the temperature in the muffle furnace was naturally lowered to 150°C, it was taken out and placed in a desiccator for later use.

[0097] (2) Adsorbent filling

[0098] The filling capacity of the fixed bed adsorption tube is 44.7g, and the filling volume is 69.8mL. The upper and lower sides of the adsorbent bed are filled with quartz wool.

[0099] (3) Calibration of real feed pump

[0100] The first-class water is used as the calibration medium, and the ...

Embodiment 3

[0110] This embodiment provides a method for regeneration and recycling of an oxygen-containing adsorbent in a fixed bed regeneration device, specifically as follows:

[0111] (1) Pretreatment of adsorbent

[0112]Take the 13X molecular sieve adsorbent and lay it flat in the special firing pool of the muffle furnace. The amount of each roasting is about 28g, and the particle size of the adsorbent is 0.85-1.15m. The adsorbent was calcined at 680°C for 6.5 hours (the heating rate of the muffle furnace was 4.5°C / min), and when the temperature in the muffle furnace was naturally lowered to 148°C, it was taken out and placed in a desiccator for later use.

[0113] (2) Adsorbent filling

[0114] The filling capacity of the fixed bed adsorption tube is 45g, and the filling volume is 70mL. The upper and lower sides of the adsorbent bed are filled with quartz wool.

[0115] (3) Calibration of real feed pump

[0116] The first-class water is used as the calibration medium, and the c...

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Abstract

The invention discloses a regeneration recycling method of an oxygen-containing adsorbent in a fixed bed regeneration device, and belongs to the technical field of adsorbent regeneration treatment. The method comprises the following steps: after an oxygen-containing compound in Fischer-Tropsch light distillate oil is absorbed by an adsorbent in a fixed bed, heating the fixed bed to 180-200 DEG C, and continuously pumping superheated liquid alcohol from the bottom of the fixed bed to analyze the adsorbent, so that the oxygen-containing compound adsorbed by the adsorbent enters the liquid alcohol; the action time of the liquid alcohol is 130-140 minutes, the action flow is 0.8-1.2 mL / min, and the action pressure is 5.0 MPa. The regeneration recycling method is simple, easy to operate, economical and environmentally friendly, the adsorbent can be regenerated repeatedly, the recycling performance of the adsorbent is improved, the service life of the adsorbent is prolonged, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of adsorbent regeneration treatment, in particular to a method for regeneration and recycling of an oxygen-containing adsorbent in a fixed bed regeneration device. Background technique [0002] At present, the use of molecular sieve adsorbents to adsorb and recycle oxygenates in Fischer-Tropsch light distillate oil is the key technology to realize the industrial scale-up of oxygenate removal. [0003] However, the existing regeneration process usually has the following problems: [0004] (1) The removal efficiency is low, the adsorption capacity is small, and the recycling performance is poor; [0005] (2) The process is complicated and the energy consumption is high; [0006] (3) The cost of the adsorbent is high and its mechanical strength is poor. [0007] In view of this, the present application is proposed. Contents of the invention [0008] The object of the present invention is to provide a meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/12
CPCC10G25/12C10G2300/1022C10G2300/202
Inventor 关怀钱震李俊诚张晓龙张慧刘宏宇薛强刘彤
Owner INNER MONGOLIA YITAI COAL BASED NEW MATERIALS RES INST CO LTD
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