Oily Residuals Management

Residual-Management-Services-Header

SERVICES FOCUSED ON RECOVERY AND ZERO WASTE

Downstream refining operations produce significant quantities of oil-bearing residuals. Veolia North America provides optimal solutions for the management of these materials by focusing on the inherent value of oil recovery and waste mitigation. With options ranging from thermal desorption, to leveraging the coker to recover all material with zero waste leaving the refinery, our patented and proprietary technologies are backed by experienced operations and a proven commitment to safety.
 
Our processing solutions are currently installed at over 50 refineries across North America, and are backed by decades of operational and process know-how. Consider partnering with Veolia’s team to develop a custom solution that:

  • Is tailored to address the specific challenges of your plant’s residual stream profile
  • Optimizes recovery and return of oil to the right place in the refinery
  • Minimizes the impact of primary separation wastewater volume on the downstream biological treatment plant
  • Eliminates the need to dispose of solids
  • Helps de-bottleneck refinery unit operations and maximize production

Veolia typically provides its residual management solutions through a site-based service agreement with guaranteed performance. This allows the refinery to delegate residual management to experts, so it can focus its capital and operational resources on its core business.

COMPREHENSIVE PROCESSING OPTIONS

By approaching residual management holistically, with sensitivity to overall life-cycle costs, Veolia’s residual management experts develop solutions that use the best available technologies and methods to maximize value recovery, while improving your operations’ reliability and performance.

3-Phase Centrifuge
At the core of our oily residual offerings is the 3-phase centrifuge that Veolia deploys to create a quality solids cake with high oil recovery rates. Various available sizes allow the system to be designed to process oily residuals on the optimal schedule for your operations.
 
The treatment options for the solids cake are numerous and include: recycling to the coker as an aqueous quench slurry or Scalfeed™ during the coker feed cycle; thermal drying and desorption; or re-use as an alternative fuel (Scalfuel™) for cement kilns, or disposal as a hazardous waste.

Coker Injection
Veolia promotes the recycling of solids via coker injection to drive a sustainable approach to residual management.  With careful stewardship and appropriate processing, injecting solids into the coker will not disrupt coker operation and benefits operators in three significant ways:
  • Disposal costs and liabilities associated with hazardous, K-Listed solids can be totally eliminated.
  • The “inside-the-gate” recycling solution minimizes risk and helps the plant operate with less environmental impact.
  • It provides a permanent processing solution that helps mitigate tank storage concerns while increasing overall utilization.
Veolia offers coker recycling in two different forms: quench side injection, and feed side or Scalfeed™ injection.  In both cases, Veolia’s engineering and operations groups work closely with your teams to design and install a fully-integrated injection process that works seamlessly with the existing coker operation. Whether the residuals are injected on the feed or quench side of the coker, there are zero remaining solids for disposal, and water and oil recovery volumes are maximized.

Quench Side Injection
Following the centrifuge process, the solids are sent through a particle-size reduction system, blended with water to a specific concentration, and pumped to the coker for injection during the quench cycle. The fine solid particles permeate through the coke bed, becoming part of the final product, and the water facilitates the quenching process.
 
Scalfeed™/Feed Side Injection 
Scalfeed™ preparation is similar to the quench slurry, but it instead uses oil as the carrier fluid to permit introduction to the coker during normal fill or feed operations. After centrifuging, the solid particles are sized and prepared into a specific slurry composition that is further dried to reduce water content.  After drying, oil is added back to the slurry to make it pumpable for feed cycle injection.

 
Scalfuel™ Alternative Fuel
For cases where the plant does not have a coker, or does not want to use its coker for waste minimization, the oil-based product slurry can be used as a feedstock for cement kilns. While the refinery will not maximize oil recovery, the benefit of this process is that the residuals are recycled as a waste-derived fuel, largely mitigating hazardous/K-listed disposal liabilities for the generator. The Scalfuel™ option also provides an alternative outlet for material recycling during coker turnarounds.

Thermal Desorption
Thermal desorption is the most aggressive and capital intensive option for processing oily residuals. This treatment option is especially attractive for plants that do not have a coker, but still wish to maximize oil recovery and reduce solids disposal costs.
 
Following the 3-phase centrifuge process, the solids cake is sent through a drying and desorption system that operates under inert atmosphere to remove more water and oil, leaving behind a “clean” solid. Vapors generated by this process are collected, condensed, and returned to the refinery’s ongoing production process.
 
The limited solids that remain after thermal desorption are characterized as hazardous waste on the basis of their source, and must be disposed of accordingly, unless a delisting exemption is obtained.  Veolia can assist your organization with securing the delisting exemption.

Cake for Disposal (Cake in a Box)
After centrifuge separation, the dry solids cake is securely containerized and prepared for transportation and disposal at a hazardous-waste landfill.  This approach involves no further processing and does not afford a plant further recovery or waste minimization options.


 

FEATURED PROJECT

Thermal Desorption Solution for Louisiana Refinery
A unique oily residual management process using thermal desorption is providing a sustainable solution for one of the United States' largest refineries.  The two-stage operation recycles oil-bearing secondary materials, resulting in process solids that may be disposed of in a local non-hazardous landfill,  following the refinery obtaining regulatory agency approval of its delisting petition. The recycling process helps reduce environmental risk while recovering an estimated 31,000 barrels of oil per year. 

SAFETY

At Veolia, the health and safety of our employees and yours is of foremost consideration in every project. Veolia’s employee-driven safety culture is designed to prevent work-place injuries, illness, and property loss. Our goal is to maintain a zero Total Recorded Incident Rate (TRIR).

Our operational expertise is backed by industry-leading safety performance and compliance ratings that you can trust to mitigate risk from your business.  With 13 OSHA-VPP Star Certified sites, plus additional sites pursuing certification, we are the most VPP-Certified environmental services provider in North America.
  • Featured Project

    FEATURED PROJECT

    Thermal Desorption Solution for Louisiana Refinery
    A unique oily residual management process using thermal desorption is providing a sustainable solution for one of the United States' largest refineries.  The two-stage operation recycles oil-bearing secondary materials, resulting in process solids that may be disposed of in a local non-hazardous landfill,  following the refinery obtaining regulatory agency approval of its delisting petition. The recycling process helps reduce environmental risk while recovering an estimated 31,000 barrels of oil per year. 
  • Safety

    SAFETY

    At Veolia, the health and safety of our employees and yours is of foremost consideration in every project. Veolia’s employee-driven safety culture is designed to prevent work-place injuries, illness, and property loss. Our goal is to maintain a zero Total Recorded Incident Rate (TRIR).

    Our operational expertise is backed by industry-leading safety performance and compliance ratings that you can trust to mitigate risk from your business.  With 13 OSHA-VPP Star Certified sites, plus additional sites pursuing certification, we are the most VPP-Certified environmental services provider in North America.