{"id":12550,"date":"2025-09-23T03:17:00","date_gmt":"2025-09-23T03:17:00","guid":{"rendered":"https:\/\/8ruiyan.com\/?p=12550"},"modified":"2025-09-23T03:17:11","modified_gmt":"2025-09-23T03:17:11","slug":"thermal-oil-heaters-4","status":"publish","type":"post","link":"https:\/\/8ruiyan.com\/en\/thermal-oil-heaters-4\/","title":{"rendered":"The Culprit Behind “Clogged Arteries” in Thermal Oil Heaters: Causes of Coking and Solutions"},"content":{"rendered":"

In industrial production, thermal oil heaters https:\/\/8ruiyan.com\/en\/all-organic-heat-carrier-boilers\/<\/a>act like the heart of a system, pumping heat to production lines. The thermal oil is the “blood” flowing through it. However, a common and tough problem\u2014”coking”\u2014is like a blood clot in the arteries. It seriously affects system health, leading to surging energy costs, equipment damage, and even safety incidents. Let’s explore the causes of coking in thermal oil heaters and provide a complete set of solutions.<\/p>\n\n\n\n

\"Coking\"<\/figure><\/div>\n\n\n\n

1. What is Coking? What are its Hazards?<\/strong><\/h2>\n\n\n\n

Coking refers to a phenomenon where thermal oil undergoes chemical changes at high temperatures. It produces insoluble substances like polymers, gums, and carbides. These substances stick to the inner walls of the heater tubes and the system.<\/p>\n\n\n\n

The hazards of coking are serious:<\/strong><\/p>\n\n\n\n

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  1. Sharp increase in energy consumption:<\/strong>\u00a0The thermal conductivity of coke scale is much lower than metal pipe walls. It creates an insulating layer, reducing heat transfer efficiency and significantly increasing fuel consumption.<\/li>\n\n\n\n
  2. Equipment damage from overheating:<\/strong>\u00a0Heat cannot be carried away by the oil in time. This causes local overheating of the heater tubes, leading to bulging, rupture, leaks, and fire.<\/li>\n\n\n\n
  3. Blocked system flow:<\/strong>\u00a0Severe coking reduces the flow area in pipes. This increases the pump’s workload and can even block pipes completely, shutting down the system.<\/li>\n\n\n\n
  4. Early failure of thermal oil:<\/strong>\u00a0Coking means the oil has severely degraded. It must be replaced, raising operating costs.<\/li>\n\n\n\n
  5. Major safety risks:<\/strong>\u00a0Heater tube rupture is one of the most serious accidents in a thermal oil system.<\/li>\n<\/ol>\n\n\n\n

    2. Identifying the Real “Culprits”: Main Causes of Coking<\/strong><\/h2>\n\n\n\n

    Coking doesn’t happen without cause. It’s usually the result of several factors working together:<\/p>\n\n\n\n

    1. Poor Quality or Incorrect Selection of Thermal Oil<\/strong><\/p>\n\n\n\n