WNS series gas-fired or oil-fired hot water boiler is smoke-fire tube chamber combustion boiler and adopts two-pass or three-pass structure. It also adopts large-diameter waveform stove furnace with good thermal expansion and safety performance. There are condenser and economizer added at the end of flue gas duct which can improve the thermal efficiency to more than 95% and save boiler's operation costs.
This video is a case collection of ZOZEN's WNS series steam boiler with 10 tph capacity. ZOZEN’s WNS series steam boiler is a kind of horizontal internal combustion wetback boiler and is popular among enterprises in various industries since being launched. This type of boiler adopts wetback structure and is equipped with advanced low NOx burner, which can effectively improve the combustion efficiency and reduce the NOx emission to realize the purpose of energy conservation and environmental protection.
Bolivia is the highest average altitude country in the world, local Bolivian companies have higher requirements for boilers than general boilers. As the altitude increases, the atmospheric pressure and the air density decrease accordingly, which adversely affects boiler combustion.
In view of this situation, ZOZEN technical team makes adjustments from the combustion system and exhaust system of boiler, fully considering the influence of low air pressure on boiler body design and combustion. By appropriately increasing the volume of the furnace to extend the residence time of the fuel in the furnace, and the problems of slow fuel burning speed and long burning time are solved.
The boiler body of WNS series boilers adopts wet-back structure. The combustion, water level, temperature and steam pressure of the boiler are automatically adjusted and protected, which can realize fully automatical operation to ensure safety and reliability. The large-diameter corrugated furnace of this boiler ensures sufficient combustion of natural gas. Combined with an advanced low NOx burner, it can easily achieve the requirement of NOx≤30mg/Nm3. In addition, the boiler is also equipped with energy-saving equipment at the end of the boiler flue, so that the boiler thermal efficiency can reach over 98%.
Thermal oil heater is a kind of new heat energy equipment with low pressure and high temperature, playing an important role in various industries. The thermal oil heater has wide adaptability of fuels, is suit for natural gas, coal gas, marsh gas, diesel, light oil, etc. The heat exchange surface adopts three-pass round coil tube structure, which features more sufficient heating surface. It is also equipped with an advanced burner to ensure the NOx emission below 30mg/m3. The waste heat boiler, air pre-heater and economizer are installed on the tails of the thermal oil heaters to effectively improve thermal efficiency, which can reach above 98%.
People cannot live a comfortable life without heating boilers in the winter, the normal and stable heat source is of great importance to human life. What is following is the increasingly serious problem of environmental pollution, implementing the policy of “coal to gas” is no time to delay, using gas-fired hot water boilers has been the general trend.
This series of boilers adopts the design of " D " type membrane wall structure, the steam drum, the water drum and convection tube bundle form the convection heating surface to ensure the the boiler expands on both ends as a whole; at the same time, the combustion chamber is designed with the narrow distance tube membrane water cooling wall to reduce heat lost, in addition, the boiler is equipped with a big combustion chamber for the full combustion of fuel, effectively increasing the boiler thermal efficiency over 98% and reducing the NOx to 30mg/m³, which are superior to the national level one energy efficiency standard.
