From Frequent Failures to Seamless Operations: A Success Story With Cognito’s EODD Pump in Oily Sludge Transfer

Overview on Oil Sludge Transfer Application

Oily sludge transfer is a critical process in many industries, involving the movement of viscous, abrasive, and often hazardous materials. Efficient and reliable pumping solutions are essential to ensure smooth operations, minimize downtime, and reduce maintenance costs.

The Need

A leading customer required a robust and reliable pump for their oil sludge transfer application. They were experiencing frequent breakdowns and severe leakage issues with their existing Progressive Cavity (PC) pumps, leading to high maintenance costs and significant downtime. They also have tested various PD pump technologies to solve this issue but not able to get rid of breakdowns. MTTR and MTBF are always on higher side which hampered their process and production capacity.

oil sludge transfer

Customer Challenges

The customer faced several challenges with their PC pumps:

Frequent Failure of Stator and Rotor:

Frequent Failure of Stator and Rotor: The PC pumps’ stator and rotor components were prone to frequent failures in highly viscous oil sludge, causing breakdowns and efficiency losses.

Increased Maintenance Costs:

Frequent breakdowns led to higher maintenance expenses, increased inventory costs, and extended downtime with the current system.

Significant Downtime:

The need for constant repairs led to substantial operational downtime, affecting overall productivity.

Process Details

Fluid: Oil Sludge
Flow Rate: 160 LPM
Discharge Pressure: 3 Barg
Viscosity: 5000 Cp
Specific Gravity: 0.95

The Right Solution

The Cognito team approached the customer to understand their process requirements and pain points and offered Cognito™ EODD pump as a solution. The EODD pump is specially designed to handle challenging applications like abrasive fluids and oil sludge transfer. It has proven to be an effective and low-maintenance option, highly recommended for critical fluid transfer applications.

The Right Solution

The Cognito team approached the customer to understand their process requirements and pain points and offered Cognito™ EODD pump as a solution. The EODD pump is specially designed to handle challenging applications like abrasive fluids and oil sludge transfer. It has proven to be an effective and low-maintenance option, highly recommended for critical fluid transfer applications.

Customer Experience

After replacing their PC pumps with Cognito’s EODD pumps, the customer experienced several benefits:

  • Approx. 76% reduction in maintenance expenses
  • Reduced breakdown
  • Improved performance & reliability
  • Quick ROI within 1.5 years
  • Improved total cost of ownership
  • Extended pump lifespan

Energy Consumption Comparison: PC Pumps vs. Cognito EODD Pump

PC Pumps
Cognito EODD Pumps
Working Hours Per Day
8 hrs/day
8 hrs/day
Energy Consumption at Duty Point (Estimated)
1.5 kW
1.3 kW
Electricity Consumption Per Month
360 kWh
312 kWh
Total Electricity Consumption Per Year
4,320 kWh
3,744 kWh

Maintenance Comparison: PC Pumps vs. Cognito EODD Pump

PC Pumps
Cognito EODD Pumps
Total Maintenance Cost Per Year Per Pump
Consumption of minimum 3 sets of stators, rotors & packing glands in a year
Operated smoothly with consumption of only one set of diaphragm, gear box & check balls in a year

The implementation of Cognito’s EODD pumps in the oil sludge transfer application has proven to be a game-changer for the customer.

 The pumps’ reliability, low maintenance requirements, and overall performance have not only met but exceeded the customer’s expectations, leading to enhanced operational efficiency and cost savings.

Download the Case Study

Cognito case study - Oil sludge transfer application_thumbnail

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