Ethylene Furnaces

Ethylene Furnace Solutions

Fired Heaters, including Ethylene Furnaces, have the greatest running cost on your site. If any one of these heaters is 1 or 2% inefficient it can consume an additional $1m in fuel over a year or result in $millions in lost revenue.

IGS Ethylene Furnace Solutions deliver:

  • CO2 and NOx emission reduction 
  • Increased capacity
  • Fuel savings
  • Elimination of operational limitations (excess flue gas temperature, firing duty, draft)
  • Refractory particle encapsulation

ethylene_cracking_furnace

Our Solutions

Cetek Efficiency Coatings

Tube Tech – Engineered Convection Section Cleaning

Hot-tek – Online Maintenance & Emergency Services:

  • Hot Tube Descaling
  • Hot Tube Stabilization
  • Hot Convection Cleaning
  • Hot Inspection Service
  • Hot Vacuum Service

Cetek Efficiency Coatings

High-Emissivity Ceramic Coatings for Refractory Surfaces

Cetek has seen a distinct benefit in treating refractory surfaces with a high emissivity ceramic coating, increasing the radiant heat transfer inside Ethylene Furnaces over design. The coating increases refractory emissivity which results in a significant increase in hydrogen production at the same process parameters. 

The Problem

Ethylene Furnaces are operated at a high process outlet and flue gas temperature, so radiant tubes (or catalyst tubes) are not manufactured from steel alloys found in refinery fired heaters, but from 25% Cr; 20% Ni, or high Ni steels, such as HL40. These metallurgies form an oxide layer when subjected to high temperatures, but unlike regular steel alloys, this layer inhibits further oxidation of the tube and further scale growth is prevented. 

Read: ‘SCR Efficiency in SMR Optimized’ Case Study 

Watch: Cetek in action

The Solution

Cetek’s High Emissivity Ceramic Coating system increases the radiant heat transfer inside Ethylene Furnaces, delivering optimum performance and reducing CO2 and NOx emissions.  

The Benefits 

  • CO2 and NOx emission reduction 
  • Increased capacity 
  • Fuel savings 
  • Elimination of operational limitations (excess flue gas temperature, firing duty, draft) 
  • Refractory particle encapsulation 

ethylene_furnace_emission_reduction

Tube Tech

Engineered Convection Section Cleaning

Tube Tech’s Ethylene Furnace convection section cleaning service is recognised by world-leading refining and petrochemical companies as the most effective technology to achieve OEM performance clean fired heaters. 

95% clean guarantee even on the most fouled assets

The Problem

Fouling 

Ethylene Furnace fouling is a costly problem for refineries around the world. Heater intake collects 1 ppm airborne particulate whilst in service, which results in deposits of 2.5 tonnes over 12 months either landing in or travelling through the heater.  

These deposits most commonly land:  

  • In the base of Radiant Section 
  • On Convection Tubes 
  • In the Air Pre-Heater 

Fouling results in: 

  • More Fuel Consumed 
  • Increased Emissions 
  • Higher Stack Temperature 
  • Heat Stress on Tubes, uneven expansion, and heat distribution 
  • More Running Costs 
  • Potential Tube Failure 
The Solution

Tube Tech’s Ethylene Furnace convection section cleaning service is recognised by world-leading refining and petrochemical companies as the most effective technology to achieve OEM performance clean SMRs. 

Traditional cleaning methods are only able to clean 30-45% of the total fouled area. Tube Tech, backed by multi-million-dollar European funding, has developed a Rover system that penetrates deep between tube rows to remove even the most stubborn fouling.  

fired_heater_with_process_pre_heat_cleaning

The Benefits 

  • Removes 95%+ of Fouling 
  • No Refractory Damage 
  • Safety – No Man Entry 
  • Reinstates Thermal Efficiency and Reduces CO2 Emissions 
  • Extends Asset Life due to Reduced Stack Temperature 
  • Rapid Global Mobilisation

Read: Fired Heater Convection Bank Cleaned Robotically at German Refinery 

Watch: The Effects of Fouling in Fired Heaters

Hot-tek™ Services for Ethylene Furnaces

Online Maintenance & Emergency Services (During the Heater’s Normal Operation) 

Hot-tek™ is the industry leader in hot maintenance and online Ethylene Furnace repair and cleaning techniques and holds multiple patents on the approach, methods, and tools used to carry out these services. The approach is customized for every client’s needs. Often, multiple Hot-tek™ Services are employed simultaneously during an application to achieve the best results.

Hot Refractory Repair

The Problem 

Failure of refractory material can lead to energy wastage, poor performance and even complete shutdown of your Ethylene Furnace. 

The Solution 

Hot Refractory Repair Services may be made gaining access through the heater steel shell directly behind the damaged area. Minimal openings are used to insert specially designed components to support the repair material. This technique offers a semi-permanent repair method lasting at least until the next planned turnaround. 

The Benefits  

  • Restore Production Rates 
  • Fast, Effective Short-term Solution 
  • Avoid Costly Unplanned Shutdowns 

Read: Our Latest Hot Refractory Repair Case Study 

Watch: Hot-Tek’s Hot Refractory Repair Service

Hot Convection Cleaning

The Problem 

Low steam production, low process pre-heat, and high stack temperatures are some of the symptoms of fouled tubes within a convection section.  

Fouling results in: 

  • More Fuel Consumed 
  • Increased Emissions 
  • Higher Stack Temperature 
  • Heat Stress on Tubes, uneven expansion, and heat distribution 
  • More Running Costs 
  • Potential Tube Failure 

The Solution 

Hot Convection Cleaning process removes convection section tube fouling & scale during furnace operation. The tube cleaning process uses consumable abrasive media projected through specially designed application lances to blast away years of accumulation, while the heater is in service. 

This emergency or intermediary solution prevents losses associated with taking the heater offline. However, we advise a Planned Preventative Maintenance (PPM) approach, and our Tube Tech service provides industry-leading offline cleaning services to prevent emergency cleaning situations. 

The Benefits 

  • Increased heat transfer efficiency in the convection section 
  • Increased steam production 
  • Increased process pre-heat 
  • Lower stack temperatures 

Read: Our Latest Hot Convection Cleaning Case Study 

Watch: Hot Convection Cleaning

Hot Inspection Service

The Problem 

Sometimes, an issue can arise in high temperature fixed equipment, but you can’t see the cause or the exact location of the problem. We designed and developed Cetek’s Lancescope™ heater inspection tool for just this situation. It allows a high-temperature furnace inspection to be carried out to determine the scope of the problem, often avoiding an expensive shut down of the heater. 

The Solution 

Cetek’s Lancescope™ system provides real-time, close-up, or wide-angle views of virtually any area inside a fired heater, or other high-temperature equipment while it is still in operation.  

The hot inspection system uses a state-of-the-art digital camera system, which provides clear, detailed images of problem areas up to 3000°F (1650°C). The furnace inspection system can be inserted into openings as small as 2.75” (7cm) and reach up to 30ft (10m). In applications below 1000°F (540°C), the heater inspection system provides illumination via a high-temperature light source for optimum clarity. 

Thorough inspection provides data needed for other Hot-tek online services. 

The Benefits 

  • Performed while unit is in operation 
  • Provides insight for production availability 
  • Identifies damage in early stages 
  • Reduces maintenance costs 
  • Minimizes repair down time 
  • Maximizes production 

Watch: About Hot Inspection Services

Hot Vacuum Service

The Problem 

Over time, debris such as ceramic fiber inorganic dust and combustion by-products entrained in the flue gas accumulate on the upstream face of the SCR catalyst. This debris hinders gas flow through the catalyst increasing the pressure drop across the SCR unit. To overcome this effect, the induced draft fan utilization must be increased consuming extra energy. After the fan has reached max capacity, production must be reduced to decrease the pressure drop across the SCR. 

The Solution 

IGS’ Hot Vacuum Service cleans catalyst banks in SCR units to Ethylene Furnaces and other fired heaters. SCR catalyst banks are cleaned during operation with no interruption to production, offering a rapid payback on associated costs. 

Our online SCR catalyst cleaning service removes pluggage and fouling from SCR screens, immediately improving catalyst reduction system efficiency. 

The Benefits 

  • Prevents costly unplanned shutdowns 
  • No disruption to process 
  • Maximizes catalyst efficiency and lifetime 
  • Increases plant uptime and reliability 

Watch: Hot Vacuum Cleaning 

Read: ‘Hot Vacuuming Prevents Emergency Shutdown’ Case Study 

Free Consultation with IGS Subject Matter Expert

IGS is here to provide information, answer questions and create an effective solution for your needs.

Contact Us

Case Studies