Direct Steam Injection Heating Applications for Pulp & Recovery

• Stock and filtrate heating up to 13% consistency possible, as well as water/filtrate heating between bleach stages.

• Hydro-Thermal is working with a major European pulp and paper equipment company to offer the pulp stock heating application on a greater scale. The equipment company partnered with Hydro-Thermal for its technology and eventually private labeled a version of its Solaris Hydroheater equipment. Now, the second generation product line is marketed in conjunction with this company in the pulp and paper market. Therefore, any processors interested in this type of application will be directed to this equipment provider.

GREEN LIQUOR HEATING

• Achieve best conversion and minimize risk of boil-over with controlled and precise temperature of slaker reaction during the causticizing process.

• There are multiple methods to heat green liquor including sparging into a tank, using a shell and tube heat exchanger, or doing nothing at all and having uncontrolled temperature. Using Hydro-Thermal’s solution increases causticizer efficiency, improves conversion rate of lime use, reduces dusting at lime kiln, and heats 100% of the process flow in line prior to the slaker.
  

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BLACK LIQUOR HEATING

• Precise and consistent temperature control allows for easy adjustment of liquor viscosity and efficient boiler firing.

• Black liquor is heated to achieve optimum drop size of the black liquor feed into the recovery boiler. If the drop size is too small, then emissions increase. If the drop size is too large, then liquor does not burn efficiently. Hydro-Thermal’s solution helps control droplet size, and can heat black liquor with solids over 70% without scaling or fouling.

• Click here for a case study. 

SODIUM CHLORATE RAILCAR UNLOADING

• Combination of 317L and Duplex2205 alloys ensure reliable heating method that controls heating of the solution throughout entire unloading process.

• Up to 10-20% of product can remain un-dissolved in railcars and be returned to the chemical manufacturer if the water isn’t at proper temperature. Preheating water to 180ºF during the recirc process can remove nearly 100% of product in the railcar. By using Hydro-Thermal’s solution, you will eliminate loss of product due to inconsistent temperature control. In addition, maintain employee safety even if you are unloading highly corrosive and hazardous material.

• Click here for a case study. 

Hydro-Thermal's solution can help with a variety of other water heating applications including:

TANK HEATING

• Easily and efficiently heats tanks on in-feed or in recirc mode, trim heat.

• We can heat the fluid going into the tank; re-circulate the tank to maintain a specific temperature, or leave the tank cold and heat the liquid exiting the tank, producing hot water on demand. Many customers see a return on investment (ROI) in less than three months.

• Click here to learn why tank heating is more efficient utilizing a Hydroheater vs. a sparger.
  
  

LOG DE-ICING

• Hot water on demand to de-ice logs on barking drum conveyor.
  
  

PRE-COAT FILTER SHOWERS

• Improve shower efficiency through precise and consistent water temperature.
  
  

MUD DILUTION WATER

• Improve operation around the caustic/green liquor area of your facility.