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Based on: Industry Standards and Best Practices

Languages: English

Sample Transcript

In a packed column stripper contaminated condensate is fed into the top of the column and flows down over the surfaces of the packing. Steam flows into the bottom of the tower providing both heat and a vapor flow. As the contaminated condensate flows down and the steam flows up the temperature of the condensate increases, which forces the organic components, which have a lower boiling point, out of the liquid and into the vapor phase.

Contaminated Condensate Systems

Training Time: 31 minutes

In the process of cooking and breaking down wood to create individual fibers, the kraft pulping process generates some undesirable by-products. These by-products all have safety and environmental impacts. This module will focus primarily on the collection and treatment of contaminated condensate streams.

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Training Content + Interactive Quizzes
TRS compounds and VOCs both contribute to contaminated condensate.

TRS compounds and VOCs both contribute to contaminated condensate.

There are multiple sources of contaminated condensate throughout a pulp mill.

There are multiple sources of contaminated condensate throughout a pulp mill.

The difference in boiling points can be used to collect two contaminated condensate streams, one that is dilute and on that is concentrated.

The difference in boiling points can be used to collect two contaminated condensate streams, one that is dilute and on that is concentrated.

Learning Objectives

  • State the purpose of a contaminated condensate system
  • List some of the chemicals which can contaminate condensate
  • List the locations where contaminated condensate should be collected
  • List two techniques for treating contaminated condensate
  • Describe the flows and operation of a steam stripping column
  • Define "condensate segregation"
  • Describe the benefits of segregating condensate collection
  • Identify and describe the safety hazards associated with some of the chemicals found in contaminated condensate
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Contaminated Condensate Systems FAQs

Where are most of the compounds that contaminate condensate generated?
Most of the toxic compounds in contaminated condensate come from the chip digestion process.

How are volatile compounds separated from water in a stripping column?
Condensate is heated in a stripping columns and volatile compounds boil out of the mixture.

What happens to volatile compounds stripped from contaminated condensate.?
Stripper compounds are typically incinerated.

Is there an alternative method for treating contaminated condensate?
Instead of stripping and burning, contaminated condensate can be treated biologically in a wastewater treatment facility.

What does segregating condensate refer to?
Segregating refer to trying to capturing two streams, one with a high concentration of contaminants, and one relatively clean stream at the time of condensation.

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