There are several main methods for setting the pressure of biomass hot water boilers:
Natural Circulation Constant Pressure: Natural circulation constant pressure refers to the circulation of hot water to the heating system through natural convection within the boiler. Under the natural circulation constant pressure method, there is a significant difference in height between the supply and return water pipes of the boiler, which is achieved through the density difference of the hot water to facilitate natural circulation. This method is suitable for small-scale biomass hot water boilers and features simplicity and cost-effectiveness.
Forced Circulation Constant Pressure: This is achieved by using a circulating pump to force hot water through the heating system. Under the forced circulation constant pressure method, the boiler provides sufficient water pressure through the circulating pump to ensure smooth flow of hot water. This method is suitable for large-scale biomass hot water boilers and boasts stability and reliability.
Micropositive Pressure Constant Pressure: Micropositive pressure constant pressure is achieved by maintaining a slight positive pressure in the boiler system, ensuring stable circulation of hot water. Under the micropositive pressure constant pressure method, the pressure in the boiler system is slightly higher than atmospheric pressure, driving the circulation of hot water through pressure differential. This method is suitable for situations requiring higher heating temperatures and greater heating distances.
Above are common methods of setting the pressure in biomass hot water boilers. Depending on specific usage requirements and system design, an appropriate pressure setting method can be chosen to ensure the normal operation and heating effect of the hot water boiler.
A biomass organic heat carrier boiler is a boiler equipment that utilizes biomass as fuel and transfers heat energy through organic heat carriers. Compared to traditional steam boilers, the biomass organic heat carrier boiler has the following performance advantages:
High thermal efficiency: The biomass organic heat carrier boiler uses organic heat carriers as the heat transfer medium, offering a high heat transfer efficiency. Organic heat carriers can achieve liquid phase heat transfer at low temperatures, resulting in minimal heat loss and allowing for more efficient utilization of the fuel's thermal energy, thereby enhancing thermal efficiency.
Flexibility: The biomass organic heat carrier boiler is suitable for various biomass fuels, such as wood chips, straw, etc. Due to the abundant biomass resources, different biomass fuels can be chosen according to actual conditions, enhancing the substitutability and flexibility of the fuel.
Environmental Friendliness: The biomass organic heat carrier furnace produces relatively little waste gas and slag during the combustion process, with low emissions of pollutants. The biomass fuel itself is characterized by low sulfur and low nitrogen, and the slag after combustion can be reused as organic fertilizer or biomass fuel, reducing environmental pollution.
Safety: The biomass organic thermal carrier boiler uses organic thermal carriers as heat transfer mediums, featuring lower working pressure, thereby reducing safety risks during the boiler's operation. Additionally, compared to fossil fuels, biomass fuel has a lower risk of explosion and fire during combustion.
Renewability: Biomass organic thermal carrier boilers use biomass as fuel, which is a renewable resource that can be continuously replenished through planting and cultivation. Compared to fossil fuels, the use of biomass fuel has a smaller environmental impact, benefiting sustainable development.
The biomass boiler combustion technology refers to the process of burning biomass fuel to release heat energy. The following are common biomass boiler combustion technologies:
Combustion Methods: Biomass boilers can employ various combustion methods, such as direct combustion, gasification combustion, and liquefaction combustion, etc. Direct combustion involves burning biomass fuel directly in the furnace; gasification combustion converts biomass fuel into combustible gases at high temperatures before burning; liquefaction combustion burns the biomass fuel after converting it into liquid fuel.
Combustion Control: Biomass boilers require control systems to manage fuel supply, air supply, and the combustion process. By adjusting the ratio of fuel to air, the combustion temperature and efficiency are controlled to achieve a stable combustion process.
Combustion Equipment: The combustion equipment of biomass boilers includes the furnace chamber, grate, and combustion chamber, etc. The furnace chamber is the main area for combustion, the grate is used to support and burn the fuel, and the combustion chamber is designed to provide an appropriate combustion environment.
Combustion Equipment: To enhance the combustion efficiency and environmental performance of biomass boilers, combustion equipment such as preheaters, dust collectors, and desulfurization units are often installed. Preheaters are used to increase the combustion temperature and thermal efficiency of the fuel, dust collectors to remove particulates from the flue gas, and desulfurization units to remove sulfur compounds from the flue gas.
Combustion Control and Monitoring: Biomass boilers require the installation of combustion and monitoring equipment.
A biomass chain grate boiler is a common type of biomass boiler, its working principle and process are as follows:
Fuel Supply: Biomass fuels (such as wood chips, straw, etc.) are transported to the combustion chamber of the chain boiler via the feeding system.
Combustion Process: Fuel is ignited in the combustion chamber while the chain boiler's chain system begins to operate. The fuel is gradually pushed forward by the chain movement and simultaneously burns within the combustion chamber. During combustion, the fuel is thoroughly mixed with air, and the heat energy produced is transferred to the boiler's water or other working substance.
Smoke Emission: Flue gases produced by combustion are channeled through the flue system of the combustion chamber and released into the chimney. During the smoke emission process, treatment can be applied with smoke purification equipment to reduce the emitted particulate matter and gas pollutants.
Heat Recovery: The heat generated by combustion is transferred to water or other working fluids through the boiler's heat exchanger, raising their temperature. After heat recovery, the hot water or steam can be used for heating, hot water supply, or other industrial processes.
Control System: Chain biomass chain boilers are typically equipped with an automatic control system that monitors and adjusts parameters such as temperature, pressure, and fuel supply during the combustion process. The control system can automatically adjust according to actual needs to ensure the safe operation and performance of the boiler.
Overall, the biomass chain grate boiler gradually feeds biomass fuel into the combustion chamber through a chain system for burning. The heat energy is transferred to water or other working substances via a heat exchanger, achieving heat recovery and utilization. This boiler boasts high combustion efficiency and strong fuel adaptability, and is widely used in heating, industrial heating, and other fields.
Our company attaches great importance to technological innovation and R&D design. We have one municipal-level enterprise technology center in Heze City, equipped with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. We have over 600 types of equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, plasma welding machines, and more. The key products and technologies we have developed, such as temperature and pressure vessel welding, biomass boiler emission reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology science and technology innovation projects, Shandong Provincial key projects, and Heze City innovation and excellence projects. The deep cryogenic container processing technology jointly developed by our technical team and Professor Yajiang Li of Shandong University, using the international plasma arc + wire filling tungsten inert gas arc welding (PAW-GTAW) technology, has been appraised as reaching international standards in the field of deep cryogenic container manufacturing at the provincial level. Choose Zhongjie Special Equipment, let's create brilliance together!
