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SubCom® Direct Evaporation Solutions

Inproheat Industries - SubCom® Direct Evaporation Solutions

Submerged Combustion Evaporator Solutions

Inproheat’s SubCom® direct fired heaters and direct fired evaporators offer proven evaporative systems solutions in various applications and industries, such as inventum boilers, boiler evaporators, and submerged evaporators which transfer heat through direct contact.

Our direct-fired evaporators provide thermal efficiency levels at close to 100%, Inproheat’s SubCom® direct-fired heaters provide quick payback as evaporative systems over traditional fluid disposal and recycling methods making it one of the most efficient direct-fired evaporating systems. Our submerged direct combustion evaporator can evaporate and concentrate challenging fluids and slurries with high system availability, making it an ideal industrial evaporation system and one of the methods to achieve direct contact heating. Water and heat recovery can also be incorporated into the system.

Direct Evaporation Industry Focus

Many industries can benefit from SubCom® direct fired heaters to evaporate corrosive liquids and slurries with direct contact heating and direct fire evaporators through technologies such as evaporator boilers. We provide many evaporation industrial applications for industries including oil and gas, mining and minerals, food and beverage, chemicals, and textiles.

Food and Beverage

The food and beverage industry generates a multitude of waste liquid streams. Through evaporative systems using Inproheat’s SubCom® direct fired heaters, solution-based salts or consumable minerals can be concentrated and in some cases, recovered for reuse, thereby conserving raw materials and lowering costs of production. Furthermore, evaporated water can be condensed and reused, thereby reducing environmental pressures on our most valuable resource – water.

SubCom® Direct-fired heaters can be used in food and beverage applications like:

  • Evaporation of RO Rejects for Food & Beverage
  • Evaporation of excess brine in cow hide curing
  • Heating of flume water in the sugar beat treatment process.

Oil and Gas

Inproheat Industries and Logic Energy Solutions have partnered through the benefits of SubCom® direct fired heaters to serve the produced water treatment needs of the oil and natural gas extraction industries.

Treating and disposing of water produced from natural gas well sites is a costly part of production, especially when dealing with remote well sites. Together, Inproheat and Logic have developed a process that can efficiently reduce the volume of water to be disposed by 90-99%. Additionally, techniques have been developed and tested in extensive field trials to handle the resultant precipitated solids and contend with scaling.

Oil and gas applications for Inproheat’s SubCom® direct fired heaters include:

  • Fracking flow back water evaporation
  • Produced water evaporation from oil and gas wells
  • RO Rejects for Oil & Gas operations
  • Oil sands tailings pond water evaporation


In the mining industry, SubCom® direct fired heaters are ideal evaporation solutions in a number of settings.

Our most common applications in mining projects are:

  • Tailing pond water evaporation
  • Crystallization
  • Solution concentration
  • RO Rejects for metallurgical processes (e.g. electrowinning)
  • Water treatment pond water freeze prevention
  • Heating of wastewater in which elevated temperatures are required for treatment operations


SubCom® direct fired heaters have also proven to be a cutting-edge direct evaporation solutions for other industry applications like landfill leachate and RO Rejects.

Recent Case Study

Inproheat Industries - SubCom® Case Study: JBS USA

Direct Evaporation Cut Sheets

SubCom Evaporation Cut Sheet


SubCom® direct fired heaters are ideal and reliable solutions for many industry evaporation applications. The recovery of high-quality water and heat energy from the evaporator exhaust can be achieved for recycling to the process where applicable, thereby reducing fresh water and fuel usage.

Inproheat’s efficiency in evaporation project environments reinforces our commitment to create first-rate systems specifically tailored to our clients’ specific requirements.