Corrosion of steam condensate pipes
Thread Content
Due to prolonged exposure to flow, the steam condensate pipes in our company develop leaks in many places every year. The pressure of the condensate is 1.3 MPa. Do any of you have any good solutions?
Check to see if most of them appear at elbows or tees
What is the temperature of the condensate water, approximately? What type of pipe are you using?
Is the corrosion allowance for the pipeline set too low?
Polymer composite materials can be used for overall reinforcement; these materials are safe and reliable, resistant to corrosion and erosion, and possess strong adhesion to the main structure, thereby effectively enhancing the reliability of the equipment. Contact is needed.
Check whether the water quality is poor or acidic Is cathodic protection in place? Are there impurities inside the pipes that cause deposits to form, leading to corrosion? The corrosion starts slowly but then accelerates over time. Please mention the pipe material you are using. There are also issues with the pipes themselves; (especially carbon steel pipes) have impurities attached to their inner walls. Moreover, pipes produced by small carbon steel manufacturers contain a high amount of impurities, which makes them prone to corrosion
1. First, verify whether the pipe material and wall thickness design are suitable for the properties, temperature, and pressure of the medium being handled at present; if not, it is a design issue and the piping system needs to be redesigned. 2. Is the medium being used identical in properties to the designed medium? If not, identify the reason. 3. Corrosion caused by internal leakage in heat exchange equipment
1. Raise the material grade in areas prone to leakage. 2. Analyze the design reasons: vertical installation facilitates mechanical corrosion; it should be installed at a 45° angle. 3. Assess the cleanliness of the medium. 4. In areas susceptible to corrosion, install protective covers – these should be added even before leakage occurs, similar to sleeves
Is leakage at the first elbow after the steam trap common?
So much time has passed – how is it to be resolved now?
Replacing the elbow with an elbow pipe solves the problem