Catalyst regenerator and catalyst regeneration method

Patent metadata

Field	Value
Publication number	US-11660591-B2
Application number	US-201716306620-A
Country	US
Kind code	B2
Filing date	Feb 1, 2017
Priority date	Feb 1, 2016
Publication date	May 30, 2023
Grant date	May 30, 2023

Abstract

A catalyst regenerator for regenerating a coked catalyst produced along with a olefin by mixing naphtha and a catalyst with each other to cause a naphtha cracking reaction, and falling from a cyclone which separates the coked catalyst and the olefin produced from the naphtha cracking reaction, includes: a vessel accommodating a catalyst layer formed by stacking the catalyst; a partial oxidation burner producing a high-temperature gas containing solid carbon; and supply nozzles connected to the partial oxidation burner, installed on a bottom of the vessel toward the falling catalyst and the catalyst layer, and spraying the high-temperature gas containing the solid carbon to the catalyst and the catalyst layer.

First claim

The invention claimed is:

1. A catalyst regenerator for regenerating a coked catalyst produced along with an olefin by mixing naphtha and a catalyst with each other to cause a naphtha cracking reaction, and falling from a cyclone which separates the coked catalyst and the olefin produced from the naphtha cracking reaction, comprising:
a vessel accommodating a catalyst layer formed by stacking the coked catalyst;
a partial oxidation burner producing a high-temperature gas containing solid carbon; and
supply nozzles connected to the partial oxidation burner, arranged toward the coked catalyst, and spraying the high-temperature gas containing the solid carbon to the coked catalyst,
wherein the partial oxidation burner is a plasma burner partially oxidizing a hydrocarbon-based fuel oil.

2. The catalyst regenerator of claim 1 , further comprising:
a stand pipe inducing falling of the coked catalyst; and
a dispersing structure provided below the stand pipe and uniformly dispersing the coked catalyst in a circumferential direction.

3. The catalyst regenerator of claim 2 , wherein:
the dispersing structure
is formed in a conical shape to induce a uniform dispersion of the coked catalyst in the circumferential direction.

4. The catalyst regenerator of claim 2 , wherein:
the supply nozzles
are provided in a circular body disposed in the circumferential direction below and outside the dispersing structure.

5. The catalyst regenerator of claim 2 , wherein:
the supply nozzles
are provided in the dispersing structure.

Assignees

• Korea Inst Mach & Materials
• Korea Res Inst Chemical Tech

Inventors

• Lee Dae-Hoon
• Kim Kwan-Tae
• Jo Sungkwon
• Park Yong-Ki

Classifications

• B01J38/02

  Heat treatment · CPC title

• B01J38/38

  and adding heat by solid heat carrier · CPC title

• C10G11/182

  Regeneration · CPC title

• C10G2300/70

  Catalyst aspects · CPC title

• B01J38/04

  Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst · CPC title