Which is better for environmental protection comparison between oil-fired boilers and gas-fired boilers?
There is not much difference between oil-fired boiler and gas-fired boiler in terms of body structure, but the heating surface is adjusted accordingly because of the different calorific value of fuel. So what's the difference between oil-fired boilers and gas-fired boilers in terms of environmental protection? Here we will take you to compare the environmental protection of oil-fired boilers and gas-fired boilers.
Comparison of environmental protection between oil-fired boiler and gas-fired boiler
1. Emissions
At present, the national emission standards for oil-fired boilers in key areas are 30 mg/nm for particulate matter, 100 mg/nm for sulfur dioxide, 200 mg/nm for nitrogen oxides, and 1 or less for smoke blackness, while those for gas-fired boilers are 20 mg/nm for particulate matter, 50 mg/nm for sulfur dioxide, 150 mg/nm for nitrogen oxides, and 1 or less for smoke blackness. In addition, more stringent standards are set by local governments. It can be seen that compared with the environmental protection of oil-fired boilers and gas-fired boilers, gas-fired boilers have cleaner emissions and higher environmental protection standards.
2. Operating cost
The cost of fuel oil is high, which is about 1-2 times that of gas-fired boilers. Moreover, the thermal efficiency of oil-fired boiler is 95%, which is obviously lower than that of gas-fired boiler, and the thermal efficiency of condensing gas-fired boiler has even exceeded 100%.
To sum up, the environmental comparison between oil-fired boilers and gas-fired boilers is clear at a glance, but on the premise of meeting the environmental impact assessment, gas-fired boilers and oil-fired boilers have their own advantages and disadvantages. When purchasing boiler products, we should choose a boiler product that is more suitable for enterprises.
Since the establishment of ZOZEN Boiler for more than 30 years, it has developed into a modern manufacturing enterprise integrating boiler complete equipment system design, product manufacturing, marketing, installation and debugging, operation service and maintenance and technical transformation. The company's products cover oil-fired and gas-fired boilers, biomass boilers, coal-fired boilers, circulating fluidized bed boilers and heat-conducting oil boilers, etc. The suitable boilers and heating systems can be selected according to the actual working conditions of users, without worrying about the environmental comparison between oil-fired boilers and gas-fired boilers.
-
WNS series gas-fired (oil-fired) hot water boilerLive Chat0.7-14 MW0.7-1.25 MPa
-
SZS series gas-fired (oil-fired) steam boilerLive Chat2-110 t/h1.25-5.3 MPa
-
ZZ series gas-fired (oil-fired) power plant steam boilerLive Chat20-130 t/h3.82-5.4 MPa
-
Email us
-
WhatsApp: +86 18861589035
WeChat: +86 13506150756
Live Chat

-
The continuous growth of the building materials industry places higher demands on thermal energy supply in production—stable steam output, efficient energy utilization, and emissions that meet environmental standards have become core criteria for selecting boiler equipment. Leveraging a deep understanding of industry-specific production needs, ZOZEN Boiler provides customized products and technical advantages to deliver reliable thermal energy support for building materials enterprises at ...21 Oct 2025 -
ZOZEN Boiler Breaks the High Humidity Biomass Combustion Challenge with DZW Series Reciprocating Grate Biomass Steam Boiler Recently, Jinzhi Morning Hong Paper Co., Ltd. (hereinafter referred to as "Morning Hong Paper") reached an important cooperation with ZOZEN Boiler, successfully introducing the DZW series reciprocating grate biomass steam boiler. This brings new impetus for efficient and green production to the company. As a leading paper product manufacturer in North China, Morning Hong P...14 Oct 2025 -
From October 21 to 23, the Heatpower Expo, Russia’s premier industrial boiler and heat exchange exhibition, will be held at the Crocus International Expo Center. As a benchmark event in the industrial boiler and heat exchange equipment sector in Russia, the expo serves as both a window into industry trends and a high-energy platform for fostering practical cooperation. ZOZEN Boiler’s Russian-speaking sales team will participate with its core boiler solutions, demonstrating clean, eff...07 Oct 2025











