Wilmer Industries Sweden (WIS) is serving Solutions & Technologies for Petroleum Refining projects. WIS business line is engineering, field testing and consulting for Process Units with more than two decades of experience in Petroleum Refineries & Coke Industries that helps clients to operate safely, cut costs, reduce emissions, and optimize performance of their Facilities.
Wilmer's solutions address tackle to global challenges, such as improving energy efficiency for the world’s growing population with protecting strategy for our environment.
Our solutions help refineries make the best possible use of crude oil bottom products with scheme development based on new technologies worldwide e.g. Slurry Technologies, Coke Calcining Unit with zero sulfur products along with save energy in this process. Our design footprints are in several oil refineries around the world.
2. 28 Years of Experience in Petroleum Coke Industries:
Design, Optimization and De-bottleneck:
- Delayed Coker
- Petroleum Coke Calcined Unit
- Needle Coke Production Facilities
3.
4. 28 Years of Experience in Petroleum Coke Industries:
9. PETROLEUM COKE CALCINING TECHNOLOGIES
Petroleum coke is a by-product of Delayed Coking Unit (DCU) in
oil refineries. It also called as Green Petroleum Coke (GPC).
Calcined petroleum coke (CPC) is a main product for consuming
in Steel and Aluminum Smelters industrial that links the oil and
the metallurgical industries as it provides a source of carbon for
various metallurgical applications.
In the aluminum industry, CPC is required for the manufacture
of anodes for the aluminum pot-lines, and in the steel industry,
it is used to manufacture carbon and graphite electrodes.
17. PROCESS TECHNOLOGY – Technology Selection
(Shaft Kiln and Rotary Kiln
A. The trend towards higher VM green cokes makes shaft calcining attractive in terms of density but the technology does not deal as well with
the finer particle size that comes with higher VM. Rotary kilns have a built in mechanism to remove fine green coke via entrainment in the flue
gas stream. As long as the kiln has waste heat recovery, value will be recovered from these fines.
B. The level of automation is improving with shaft Kilns but there are some fundamental problems related to tar buildup that will be difficult to
overcome without improvements in combustion control. This ultimately means a higher capital cost if more sophisticated control systems are
used. A shaft Kiln is unlikely to ever compete with a rotary kiln in terms of manpower requirements, ease of operation and flexibility. It is very
easy to startup and shutdown rotary kilns. The more a shaft Kiln is automated, the higher the capital and maintenance costs and the more it
starts resembling a rotary kiln. The inability to shut a shaft kiln down becomes more of a problem when the level of automation is increased.
C. A refinery building a calcining plant as an off-take for green coke would be unlikely to ever build a shaft kiln. A case in point is the rotary kiln
commissioned in mid-2010 at the CNOOC refinery in Huizhou, China. It is a modern rotary kiln with waste heat recovery and is much more in
line with the refinery's standards for automation, manpower requirements, environmental and safety performance, flexibility and so on.
D. Perhaps the most significant benefit of shaft calcining is the low cost to build and operate small Shaft Kilns in some parts of the world.
Rotary kilns are better suited to large volume applications in Petroleum Refineries which make the most of their economy of scale advantages.
This makes the combination of a shaft kiln and a rotary kiln potentially very attractive based on suitability of each technology.
19. PROCESS TECHNOLOGY – Suitability of Each
Technology
Wilmer Industries offers both “Shaft Kiln and Rotary kiln Technologies for Petroleum Coke Calcining Projects,
However, the below table shows suitability of each technology:
