As the name implies, high temperature flue gas flows inside the tube and water flows outside the tube boilers are called fire tube (flue tube) boilers. Fire tube boilers are generally small boilers, divided into two categories: vertical and horizontal, the furnace structure of these boilers will be smaller compared to water tube boilers, generally in the capacity of about 0.5-10 tons. ZOZEN produces WNS series oil and gas boiler is a typical industrial fire tube boiler.
In boiler operation, a large amount of industrial water and fuel energy is used to generate steam, and the heat from the steam is then used to realize the industrial production process. What is generated after the steam releases some of its heat energy is condensate. By recycling high temperature condensate as boiler feed water or using secondary flash steam, not only does it save industrial water, but it also saves a lot of fuel. In this way, boilers can save 30-40% of fuel, water and water treatment chemicals when producing the same amount of steam. The fuel saving also reduces boiler flue gas emissions and protects the environment.
WNS series steam boiler capacity ranges from 1 ton to 20 tons, and different industries have different needs for boilers, such as 6 tons gas steam boiler for chemical industry, 2 tons steam boiler for paper industry, 6 tons three-return boiler for pharmaceutical industry, 10 tons steam boiler for printing and dyeing industry, etc.
A pharmaceutical plant that mainly deals with sterile APIs, botanical extracts and preparations has a huge demand for steam. ZOZEN, with its rich experience in the pharmaceutical industry, customized a WNS series three-return gas-fired steam boiler for the customer.
The boiler adopts horizontal internal combustion three-return wet-back structure and is equipped with advanced foreign burners. The burner automatically adjusts the gas volume and blower air volume according to the boiler load condition, thus obtaining a better air-fuel ratio. At the same time, the boiler system is also equipped with a condenser, which further improves the utilization rate of fuel by lowering the exhaust temperature and increasing the boiler inlet water temperature, resulting in a boiler thermal efficiency of over 98%, thus achieving high energy efficiency.
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