Hangzhou Oleochemicals Co., Ltd., a long-established manufacturer in China’s oleochemical sector, has strengthened its production capabilities by introducing a 15 Tons DHL series coal-fired steam boiler from ZOZEN Boiler for its Indonesian subsidiary, PT. DUA KUDA INDONESIA. As the company expanded and upgraded its local production lines, a stable, high-capacity steam supply became essential for supporting key processes such as pretreatment, hydrogenation, decomposition, and distillation. The decision to adopt the 15 Tons DHL series coal-fired steam boiler reflects the enterprise’s commitment to ensuring reliable heat supply while optimizing operational performance in an industry where continuous steam delivery is crucial for product quality.

ZOZEN 15 Tons DHL series coal-fired steam boiler

To meet the production needs of the Indonesian plant, ZOZEN supplied a customized 15 Tons DHL series coal-fired steam boiler featuring an external drum design and a field-erected structure. This configuration incorporates advantages similar to a corner-tube boiler, including a compact arrangement, reduced steel usage, and rapid temperature rise. These characteristics help ensure fast response during load changes, which is especially valuable in oleochemical plants where process continuity is critical. The furnace adopts a front and back arch covered structure: a refractory concrete front arch at the lower section of the front wall functions as the fire arch, while the rear arch serves as the ignition arch. Together, these structural elements stabilize flame development and promote efficient fuel combustion.

Beyond structural optimization, the 15 Tons DHL series coal-fired steam boiler integrates multiple combustion-enhancing technologies. The system applies isobaric warehouse air supply to maintain consistent air pressure, while fine-tuned micro-area air distribution enables precise control over airflow across the furnace. Combined with a wide coal-adaptable arch design, these features improve fuel–air mixing, increase furnace temperature, and enhance overall combustion efficiency. For oleochemical processes where stable thermal conditions directly influence reaction performance and product yields, these improvements provide a solid foundation for reliable operation.

ZOZEN further strengthened energy utilization through the application of fully sealed membrane water wall structures around the boiler body and the internal partition walls. This design minimizes heat loss, increases the heat-absorbing surface area, and ensures uniform furnace temperatures. As a result, the 15 Tons DHL series coal-fired steam boiler can achieve thermal efficiency above 82%, supporting both energy conservation and stable heat supply for the plant’s upgraded production lines.

Since implementation, the 15 Tons DHL series coal-fired steam boiler has helped PT. DUA KUDA INDONESIA maintain consistent steam output, enhance process stability, and support higher production capacity. The combination of efficient combustion, durable structural design, and reliable steam delivery has reduced operational risks while improving overall productivity. These outcomes demonstrate how a well-selected steam system can directly benefit oleochemical manufacturing—an industry in which precision and continuity are essential.

In summary, the collaboration between Hangzhou Oleochemicals and ZOZEN Boiler highlights the strategic value of the 15 Tons DHL series coal-fired steam boiler in modern chemical production environments. By meeting the facility’s expanding steam demand and delivering dependable performance, the project reinforces the company’s global competitiveness and supports sustainable growth in Indonesia’s important oleochemical sector.