Location: Turkmenistan
Application: Oil Sludge Treatment & Crude Oil Purification
Equipment Supplied: Oil Sludge Treatment System and Electric Desalting System

Project Overview

Henyo Petro has successfully provided an integrated oil sludge treatment and electric desalting solution for a customer project in Turkmenistan.

After comprehensive manufacturing, assembly, testing, and inspection procedures, the complete system was successfully prepared and delivered to the project site, supporting efficient oil sludge treatment, resource recovery, and crude oil purification operations.

As a global energy equipment solutions provider, Henyo Petro delivers integrated environmental and energy solutions designed to help customers improve resource utilization, reduce waste impact, and enhance overall operational efficiency.

Delivered Oil Sludge Treatment System Configuration

The delivered oil sludge treatment and electric desalting system includes:

• Centrifuge tank

• Shale shaker tank

• Heating and premixing tank

• Three-phase disc separator tank

• Related supporting equipment and accessories

The integrated system combines mechanical separation, chemical treatment, centrifugal separation, and electric purification technologies to achieve efficient sludge reduction, harmless treatment, and valuable resource recovery.

Advanced Oil Sludge Treatment Solution for Resource Recovery

Oil sludge is a complex industrial waste generated during oil and gas exploration, production, storage, transportation, and refining processes.

It typically contains:

• Crude oil

• Water

• Solid particles

• Inorganic minerals

• Other contaminants

Henyo Petro’s oil sludge treatment solution integrates multiple advanced technologies, including:

• Physical separation

• Chemical treatment

• Thermal treatment

• Centrifugal separation

• Three-phase separation

Through these integrated treatment processes, the system achieves:

• Sludge volume reduction

• Hazardous waste treatment

• Oil resource recovery

• Environmental impact reduction

Oil Sludge Treatment Process

1. Pretreatment Stage

During the pretreatment stage, chemical additives, heating, and dilution methods are applied to effectively break the encapsulation of oil droplets within the sludge.

This process improves oil release efficiency and enhances the performance of subsequent separation stages.

2. Solid-Liquid Separation

Through high-efficiency screening technology, the system effectively separates solid and liquid phases.

The main functions include:

• Removing most solid particles

• Reducing solid waste volume

• Improving dehydration performance

• Preparing materials for further treatment and resource utilization

By reducing solid content in the liquid phase, the system improves the efficiency and stability of subsequent centrifugal separation.

3. Centrifugal Separation

The treated material enters the two-phase decanter centrifuge for further separation.

The centrifugal separation process achieves:

• Solid phase oil content controlled within 2%

• Further reduction of solid particles in liquid phase to below 3%

The separated material is then prepared for advanced purification through the three-phase disc separator system.

4. Three-Phase Disc Separation

The three-phase disc separator performs final separation of:

• Oil

• Water

• Solid particles

from oil sludge with solid content below 3%.

The separation performance can achieve:

• Oil content in separated water: 500–1000 PPM

• Water and solid content in recovered oil: ≤3%

This final purification stage improves recovered oil quality while minimizing environmental discharge and maximizing resource recovery.

Electric Desalting System for Crude Oil Purification

The electric desalting system is an advanced crude oil purification technology that utilizes a high-voltage electric field to efficiently remove water and dissolved salts from crude oil.

The system mainly consists of:

• Pretreatment unit

• Electric desalting unit

• Drainage system

• Electrical control system

Working Principle of Electric Desalting System

During operation, crude oil first passes through the pretreatment unit to remove mechanical impurities before entering the electric desalting unit.

Under the influence of a high-voltage electric field:

• Small water droplets inside crude oil become polarized

• Water droplets combine into larger droplets

• Larger droplets settle through gravity separation

• Dissolved salts are removed through water extraction

Through this advanced purification process, the electric desalting system effectively reduces water and salt content, improving crude oil quality and supporting efficient downstream processing.