www.blancon.net

Tank cleaning: oil sludge

control & homogenization

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Blancon tank cleaning: overview

Blancon offers a safe, fast and efficient method to remove unpumpable tank bottom sludges while eliminating the high disposal costs by at clients request - recovering the previously

unusable product for customers use

Complete mobility of our equipment allows us to respond to tank cleaning problems quickly in a cost-effective way

Safety of plant, equipment and crews represent paramount priorities throughout our operations

All of our operators are trained to the highest standard to undertake any tank or vessel cleaning operation

Equipment may be ATEX certified, equipped with spark-arrestors, etc. to meet Zone 1 work area requirements

Blancon offers a complete desludging service available whenever the need may arise to

reduce your tank bottoms.

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Blancons tank cleaning solution is broader and more extensive

Sludge minimization De-sludging Tank cleaning Oil recovery

Blabo (Oreco)

COWS (Taiho)

GasTight (Hydrochem)

SuperMacs (3i) Phaser (3i)

Hydrodozer (Willacy)

Manual labor

Advanced, high volume jet mixers at up to 800 m3/h/

unit Can convert 90% of the

original volume of sludge to salable material

Heavy sludge mobilization and tank bottom cleaning

Remove all remaining and tough sludge to prepare the

tank for inspection and hot-work

Advanced technology to deliver the best level of

recovery Recover up to 99% of

hydrocarbons

Oil lagoons and and recovery

Up to 99% recovery of oil from lagoons

and pits Environmental clean

up and remediation

Bla

nc

on

Focus of this

presentation

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High volume sludge reduction without man-entry, plus residual sludge extraction and treatment

Blancon uses a proven system that works by directing a submerged jet of crude oil

across the bottom of the storage tank

Dissolves and re-suspends the accumulated sludge throughout the overhead oil

Fluid dynamically powered

Valuable hydrocarbons are re-suspended into the crude oil and not wasted

The shell-mounted system is designed to be placed at the tank wall

Normally using the existing tank shell manway for mounting

The solution is suitable for all roof types (floating roof application requires the legs of

the roof to be out of the main operating

stream)

Blancon offers solutions for very heavy build-ups where jetting may not be optimal as well as

oil and sludge treatment and separation services

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Methodology overview

Stage 1: Client bottoms tank

The tank is bottomed to allow access through the manway covers for the jet

mixers.

Degassing: This operation should be carried out before our specialist operators arrive

on site.

Stage 2: Site preparation & installation

The site is prepared and the jet mixersare installed in the tank, mounted on custom-

made manway covers.

Then the high-volume pumps are connected, ready for the de-sludging

operation

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Methodology overview (continued)

Stage 3: Re-filling the tank

After a thorough check of the installation, the client refills the tank to a pre-

determined level with light crude.

Stage 4: The cleaning process putting the

hydrocarbons back into suspension

The specialist team set the de-sludging operation in progress by re-circulating the

light crude and pumping it back into the

tank at 700M per hour per unit.

As the jet mixer units rotate slowly inside the tank, the jet of crude will sweep up the

sludge-cutting, re-suspending and

homogenising it in the overhead oil ready

for normal refining processes.

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Methodology overview (continued)

Stage 5: Re-suspension completed

The crude should now be homogenized, with soluble hydrocarbons in suspension

and ready for processing. At this stage the

tank is drained to a holding tank and the

effectiveness of the operation assessed. If

there is still a large amount of solids not

suspended the operation is repeated but

for a shorter period.

Stage 6: Equipment removed tank now

available for re-use

After removal of the Jets/shell mounted de-sludging equipment, any small amounts

of (if any) remaining residues can be

handled by conventional methods.

Alternatively, the tank can be put straight

back into operation for storing crude.

A typical test with 2600 m3 sludge showed that after a 15h-

operation, 2300 m3 are re-suspended, whereas after a 30h-

operation up to 2500 m3 were re-suspended.

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More than 600 tanks worldwide have been treated using this approach

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Optional full oil separation and treatment system overview

Note: Illustrative example. Actual configuration

and units may change.

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Oil processing, dewatering and recovery

Continuous processing of extracted slope, or contaminated soil, and separating it into its base components for

disposal, or re-use

2 stage and 3 stage, including centrifuging

Separation of oil, water and inorganics Reuse of hydrocarbons

Reduced slope volume

Minimal waste generated

Environmental remediation applications for oil-contaminated soils etc.

Provides a cleaner and more liquid free cake in a 3 phase separation process*

Offers cleaner oil free tanks in preparation for inspection and repairs

* As tested by US Filter on their dewatering equipment, yielded a

significantly drier cake. Instead of the usual 30% - 40% liquid

content on the filter test, the conditioned slope yielded a result of

17.5%

** Results may vary

< 1% Water in Oil Content

< 0,2% of Sediments in Oil**