Process for calcining petroleum coke

A calcination process and petroleum coke technology, applied in the field of coking, can solve the problems of combustible gas overflow obstruction, furnace blockage, easy deformation, etc., and achieve the effects of being conducive to temperature control and stability, sufficient and timely overflow, and reducing high-temperature deformation

Active Publication Date: 2010-08-04
WEIFANG LIANXING NEW MATERIAL TECH
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through theoretical analysis and experimental practice, it is obtained that: because the third and fourth calcination areas are high-temperature areas in the traditional process method, the temperature of the furnace body is the highest at this time, it is easy to deform, and it also bears the pressure of petroleum coke from the upper first and second layers, so it is easy to occur deformation fission phenomenon
At the same time, the trace elements (combustible gas) contained in petroleum coke are most likely to volatilize in the third and fourth calcination zones. At this time, due to the depth of petroleum coke, the upper material surface is too thick,

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
  • Process for calcining petroleum coke
  • Process for calcining petroleum coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Crush petroleum coke into petroleum coke particles with a particle size of less than 50 mm, and remove metals and other impurities.

[0027] (2) After the petroleum coke particles are preheated in the preheating zone of the calcination furnace, enter the calcination zone for calcination, and control the calcination temperature according to 8 calcination zones, and the temperature of each calcination zone is:

[0028] The first calcination zone 1280~1300℃

[0029] The second calcining zone 1250~1280℃

[0030] The third calcining zone 1200~1250℃

[0031] The fourth calcining zone 1180~1200℃

[0032] The fifth calcination zone 1150~1200℃

[0033] The sixth calcination zone 1100~1150℃

[0034] The seventh calcination zone 1050~1100℃

[0035] Eighth calcining zone 1000~1050℃

[0036] The calcination time is 48 hours.

[0037] The calcined petroleum coke is discharged from the outlet of the eighth calcining zone of the calciner after being calcined, and then transp...

Embodiment 2

[0039] (1) Crush petroleum coke into petroleum coke particles with a particle size of less than 50 mm, and remove metals and other impurities.

[0040] (2) After the petroleum coke particles are preheated in the preheating zone of the calcination furnace, enter the calcination zone for calcination, and control the calcination temperature according to 8 calcination zones, and the temperature of each calcination zone is:

[0041] The first calcining zone 1250~1280℃

[0042] The second calcination zone 1230~1250℃

[0043] The third calcining zone 1180~1230℃

[0044] The fourth calcining zone 1150~1180℃

[0045] The fifth calcining zone 1100~1150℃

[0046] The sixth calcination zone 1050~1100℃

[0047] The seventh calcining zone 1000~1050℃

[0048] Eighth calcining zone 980~1000℃

[0049] Calcination time 48 hours.

[0050] The calcined petroleum coke is discharged from the outlet of the eighth calcining zone of the calciner after being calcined, and then transported to the p...

Embodiment 3

[0052] (1) Crush petroleum coke into petroleum coke particles with a particle size of less than 50 mm, and remove metals and other impurities.

[0053] (2) After the petroleum coke particles are preheated in the preheating zone of the calcination furnace, enter the calcination zone for calcination, and control the calcination temperature according to 8 calcination zones, and the temperature of each calcination zone is:

[0054] The first calcination zone 1200~1250℃

[0055] The second calcination zone 1200~1250℃

[0056] The third calcining zone 1180~1200℃

[0057] The fourth calcining zone 1150~1200℃

[0058] The fifth calcining zone 1100~1150℃

[0059] The sixth calcination zone 1050~1100℃

[0060] The seventh calcining zone 980~1050℃

[0061] Eighth calcining zone 950~980℃

[0062] Calcination time 52 hours.

[0063] The calcined petroleum coke is discharged from the outlet of the eighth calcining zone of the calciner after being calcined, and then transported to the...

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a process for calcining petroleum coke. The calcination of the petroleum coke is carried out in a tank type calcining furnace, and the tank body of the tank type calcining furnace is provided with a preheating zone and 6-8 calcining zones sequentially from top to bottom, wherein the calcining temperature of the first calcining zone at the uppermost part is controlled in the maximum calcining temperature interval allowed by the petroleum coke; the calcining temperature of the second calcining zone in the downstream position of the first calcining zone is kept in the maximum calcining temperature interval and is not higher than the calcining temperature of the first calcining zone; starting from the third calcining zone, the calcining temperature of each calcining zone gradually reduces relative to the calcining temperature of the adjacent calcining zone in the upstream position; and in the undermost calcining zone, the calcining temperature is reduced to the discharging temperature. In the invention, when the petroleum coke is calcined, the high temperature zone is positioned at the top end of the calcining furnace, thereby relieving the high temperature deformation phenomenon of the furnace body, being more favorable for overflow of combustible gas in the petroleum coke, reducing the corrosion of the combustible gas on wall bricks, and being favorable for prolonging the service life of the tank type furnace.

Description

technical field [0001] The invention relates to the technical field of coking, in particular to a petroleum coke calcination process. Background technique [0002] Petroleum coke is a petroleum product obtained by distilling crude oil to separate light and heavy oils. The appearance is black or dark gray hard solid with metallic luster. It is a granular, columnar or needle-shaped carbon body formed by tiny graphite crystals. The main purpose of petroleum coke is to produce carbon products, such as graphite electrodes and anode arcs, to provide steelmaking, non-ferrous metals, aluminum smelting, and to produce silicon carbide products, or as fuel. Petroleum coke produced from petroleum coke factories is also called green coke, which contains some combustible gases of uncarbonized hydrocarbons. Green coke can be used as fuel-grade petroleum coke. If it is used as a carbon product, it must be treated The coke is calcined at high temperature to remove the combustible gas contai...

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
IPC IPC(8): C01B31/02
Inventor 王佐任卞玉峰段圣增王佐峰翟所云
Owner WEIFANG LIANXING NEW MATERIAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap