Delayed coker drum and method of operating thereof

Patent metadata

Field	Value
Publication number	US-10501692-B2
Application number	US-201715650587-A
Country	US
Kind code	B2
Filing date	Jul 14, 2017
Priority date	Jul 15, 2016
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

The present subject matter describes a method and apparatus for operating a delayed coker. The method comprises contacting a vapour produced in a delayed coker-drum with a catalyst maintained in form of a bed, and maintaining a level of said catalyst-bed within pre-defined limits during catalytic-cracking of the vapour. Thereafter, the cracked-vapour is routed to a coker-fractionator column to trigger conversion into one or more hydrocarbon products.

First claim

The invention claimed is:

1. A delayed coker-drum comprising;
a catalyst bed located within and at about an exit of the delayed coker-drum for contacting vaporized hydrocarbon products to trigger catalytic cracking;
wherein said vaporized hydrocarbon products are generated from thermal cracking of a hydrocarbon-feed stream inside the delayed coker-drum.

2. The delayed coker-drum as claimed in claim 1 , further comprising:
an overhead vapour line connected to said bed to transfer vaporized hydrocarbon products to a coker-fractionator column;
wherein said vaporized hydrocarbon products are generated inside the delayed coker-drum from thermal cracking followed by catalytic cracking reaction.

3. A system comprising:
a delayed-coker drum producing vaporized hydrocarbon products resulting through thermal cracking of a hydrocarbon-feed stream;
a catalyst bed flow-connected to the delayed coker-drum for contacting said vaporized hydrocarbon products to trigger cracking; and
an additional catalyst bed flow connected to the delayed coker drum for receiving said vaporized hydrocarbon products;

wherein said at least two catalyst-beds receiving said vaporized hydrocarbon products from the delayed coker drum over different period of time.

4. The system as claimed in claim 3 , further comprising a coker-fractionator column for converting cracked vapour received from at least one of said catalyst-bed into one or more hydrocarbon products.

5. A system comprising;
a delayed coker drum;
a moving catalyst bed located within and at about an exit of the delayed coker drum for contacting vapour products generated in the coker-drum and withdrawing vaporized hydrocarbon products formed therein;
a stripper vessel connected to said catalyst bed for removing the entrained hydrocarbons within a spent-catalyst; and
a regenerator connected to said stripper vessel for regenerating the received spent catalyst and further connected to the moving catalyst bed for providing the regenerated catalyst.

Assignees

• Indian Oil Corp Ltd

Inventors

• Prasad Terapalli Hari Venkata Devi
• Pradeep Ponoly Ramachandran
• Das Satyen Kumar
• Dixit Jagdev Kumar
• Rajesh
• Thapa Gautam
• Bhattacharyya Debasis
• RAMAKUMAR Sankara Sri Venkata
• Das Biswapriya

Classifications

• C10G9/005

  Coking (in order to produce liquid products mainly) · CPC title

• C10G51/04

  including only thermal and catalytic cracking steps · CPC title

• B01J19/0053

  Details of the reactor · CPC title

• C10B33/00 Primary

  Discharging devices; Coke guides · CPC title

• C10B1/04 Primary

  Vertical retorts · CPC title