Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, and CO2 tanks; pressure vessel products such as denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment; central air conditioning and HVAC equipment such as ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
After the hot water boiler is shut down, here are some common maintenance measures: 1. Clean the boiler: After shutdown, clean the boiler first. Use appropriate cleaning tools and detergents to wash away dust, dirt, and sediment inside the boiler. Pay special attention to cleaning the combustion chamber, flue, and heat exchanger, etc. 2. Drain the water: Empty the water in the boiler to prevent the accumulation of scale and corrosive substances. Open the drain valve to drain the water until the interior of the boiler is completely empty. 3. Corrosion prevention: Before the boiler is shut down, apply corrosion prevention treatment to prevent the corrosion of internal metal materials. Use suitable corrosion inhibitors or coatings to treat key areas inside the boiler. 4. Inspection and maintenance: During shutdown, regularly inspect all parts and connections of the boiler to ensure there are no loose, damaged, or leaking issues. If problems are found, repair or replace them promptly. 5. Keep dry: After shutdown, maintain the interior of the boiler dry. Open the ventilation and exhaust openings of the boiler to ensure air circulation, preventing moisture and mold growth. 6. Regular inspections: Regularly check the boiler's condition to ensure there are no abnormalities. Develop a corresponding inspection plan based on the boiler's usage and requirements, such as a comprehensive check every quarter or year. 7. Pre-startup preparation: Before restarting the boiler, perform the necessary pre-startup preparations. This includes cleaning the boiler, checking equipment and pipeline connections, inspecting fuel supply, etc.

Operation issues with the fuel system of a thermal oil furnace may include: - Poor fuel quality: Using low-quality or contaminated fuel can lead to problems in the fuel system. For example, the presence of impurities, moisture, or excessive amounts can cause blockages in the fuel pump, nozzle, and burner, affecting fuel supply and combustion efficiency. - Inadequate maintenance of fuel filters: Fuel filters are designed to remove impurities and particulate matter from the fuel, preventing them from entering the fuel system. If fuel filters are not cleaned or replaced regularly, they can become blocked, impeding fuel flow and supply. - Incorrect fuel pump adjustment: Proper adjustment of the fuel pump is crucial for maintaining consistent fuel supply and pressure. Improper adjustment can result in either over-supply or under-supply of fuel, leading to incomplete combustion or insufficient fuel supply, affecting the furnace temperature and thermal efficiency. - Clogged or worn fuel nozzles: Fuel nozzles are critical components for atomizing and injecting fuel into the furnace chamber. If nozzles become clogged or worn, they can cause uneven or incorrect injection angles, affecting combustion efficiency and thermal output. - Insufficient fuel preheating: Fuel needs to be preheated before entering the burner to enhance combustion efficiency. If preheating is inadequate, fuel viscosity increases, affecting fuel flow and injection. - Fuel system leaks: The密封 integrity of the fuel system is key to ensuring stable fuel supply. Leaks in the fuel system can lead to fuel supply disruption.

The purpose of deoxygenation in industrial boiler make-up water is to reduce oxygen corrosion and bubble formation within the boiler, ensuring the safety and proper operation of the boiler and pipeline systems. The main methods of deoxygenation include: 1. Mechanical Deoxygenation: Removing oxygen from water using physical methods. Common mechanical deoxygenation equipment includes deaerators and degassers. Deaerators achieve this by spraying water into a thin film, utilizing the difference in gas solubility to remove oxygen. Degassers, on the other hand, spray water into fine droplets, also using the difference in gas solubility to remove oxygen. 2. Thermal Deoxygenation: Removing oxygen from water by heating the water body, taking advantage of the property that oxygen solubility decreases with increasing temperature. Common thermal deoxygenation equipment includes deaerators and deaeration pots. Deaeration pots release oxygen from water by heating it to saturation temperature. Deaerators heat the water to reduce oxygen solubility, thereby removing oxygen. 3. Chemical Deoxygenation: Removing oxygen from water by adding chemicals that react with it, thus removing oxygen. Common chemical deoxygenating agents include salts, reducers, etc. Chemical deoxygenation is often used in high-pressure boiler systems and can effectively remove oxygen from water. The choice and method of deoxygenation depend on the specific boiler system and water quality. In practice, a combination of deoxygenation methods is often used to achieve the desired deoxygenation effect. The selection and operation of deoxygenation equipment should be assessed and adjusted based on actual conditions to ensure the safety and proper operation of the boiler system.

To optimize and improve the planning of gas-fired boiler systems, consider the following aspects: 1. Energy Audit and Assessment: Conduct a comprehensive energy audit and assessment to understand the energy consumption of the gas-fired boiler system and identify potential energy-saving opportunities. Through data analysis and energy measurements, determine the primary sources of energy consumption and bottlenecks, providing a basis for subsequent optimization. 2. Combustion System Optimization: Optimize the combustion system of the gas-fired boiler, including adjustments and cleaning of burners, control of gas-to-air ratios, and maintenance of the combustion chamber. Ensure high combustion efficiency and gas utilization, reducing energy waste. 3. Heat Recovery Utilization: Consider installing heat recovery devices such as waste heat recovery units or flue gas heat exchangers. These devices can utilize the excess heat from the flue gas emitted by the gas-fired boiler to heat water or other equipment requiring thermal energy, enhancing energy efficiency. 4. Pipe Insulation and Leak Inspection: Ensure that the insulation of gas and hot water pipes is effective to reduce energy loss. Regularly inspect for pipe leaks and make timely repairs to avoid energy waste and safety hazards. 5. Control System Upgrade: Consider upgrading the control system of the gas-fired boiler with automated control technology. Through precise control and regulation, achieve optimized operation of the gas-fired boiler.
Our company attaches great importance to technological innovation and R&D design. We have one city-level enterprise technology center in Heze City, equipped with non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and other testing facilities. We have over 600 various instruments and equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property testing machines, chemical analyzers, spectrometers, tensile testing machines, and plasma welding machines. Our key products such as welding of temperature and pressure vessels, biomass boiler emission reduction, and waste heat recovery have successively entered multiple Shandong Provincial Department of Industry and Information Technology scientific and technological innovation projects, Shandong Provincial key projects, and Heze City innovative and excellent projects. We have cumulatively obtained 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The deep cryogenic vessel processing technology jointly developed by our technical team and Professor Yajiang Li from Shandong University, using the international plasma arc + wire filling argon arc welding (PAW-GTAW) technology, has reached an international level in the field of deep cryogenic vessel manufacturing, as certified by the provincial scientific and technological achievement evaluation.
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