The entire production process of sunflower seed oil highly relies on stable saturated steam as the core heat source: the steaming and frying process before pressing requires constant temperature steam to destroy the cell structure of the oil and improve the oil yield.The processes of degumming, deacidification, decolorization, and deodorization in the refining section require continuous high-pressure steam to ensure the quality of edible oil. At the same time, equipment CIP pipeline cleaning, winter heating in the factory area, and raw material drying all require a large amount of steam consumption around the clock. The cooperation reached with Sitong boiler this time is with a medium-sized professional sunflower seed oil refinery in central Russia, which integrates sunflower seed cleaning, steaming and frying, pressing, crude oil refining, deodorization, dewaxing, and finished oil filling. The products are supplied to local supermarkets in Russia and food processing enterprises in neighboring Central Asian countries. The old coal-fired boilers in the factory area have 4 core pain points:
1. The original coal-fired boiler had large fluctuations in steam pressure and insufficient evaporation capacity, which could not support 24-hour continuous production, resulting in frequent loss of control of deodorization temperature and unqualified finished oil.
2. The thermal efficiency of the boiler is relatively low (only about 73%), with high coal consumption and high annual fuel operating costs.
3. Its low-temperature start-up performance is poor and cannot adapt to the long cold winter in Russia (the lowest temperature in the environment can reach -35 ℃), resulting in frequent shutdowns and malfunctions during winter.
4. The original boiler's flue gas emissions exceeded the standard and did not meet the local environmental control standards in Russia, posing a risk of rectification and production stoppage.
The customer finally reached a cooperation agreement with Sitong boiler on one DZL4-1.25-AII series coal fired chain grate steam boiler as the core heating equipment for their entire production line after multiple rounds of technical benchmarking and screening by overseas boiler manufacturers.
 


The DZL4-1.25-AII series coal fired chain grate steam boiler from Sitong boiler features stable steam supply, ensuring no fluctuations in steam pressure throughout the day, deodorization, and constant and controllable temperature in the refining section. It can achieve reliable operation at low temperatures, zero-shutdown failures in winter, and avoid production losses caused by pipeline freezing and blockage and shutdown failures during winter operation cycles. The maintenance labor cost required for boilers is also very low, and daily operations are simple and convenient. It adopts a fully automatic chain grate for coal loading and slag removal, which can help enterprises reduce one full-time stoker. The modular design of the core components of the boiler makes it easy to disassemble and replace, and local workers can independently complete daily maintenance without relying on overseas after-sales engineers for a long time, significantly reducing long-term operating labor costs. The technical director of the company provided feedback: "We are very much looking forward to Sitong boiler's DZL series coal-fired boiler being perfectly adapted to our sunflower seed oil refining production line, solving the 3 major problems that have long plagued us: unstable steam, high coal consumption, and difficulty starting in winter. The bilingual control system is very friendly to Russian operators, and the after-sales technical guidance provided by the Sitong boiler team is also very timely and professional. We will still prioritize Sitong boiler for future factory expansion. ”The picture shows the delivery site of the boiler:
 
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