Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, an A2-grade pressure vessel manufacturing license, an A2-grade pressure vessel design license, a B-grade boiler installation license, and GB2/Class and GC2/Class pressure pipeline installation licenses, as well as a mechanical and electrical equipment installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the council member of the Shandong Equipment Manufacturing Association. The company has also passed the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, and the American ASME/U2 certification.
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 system. The main methods of deoxygenation include: 1. Mechanical Deoxygenation: Removing oxygen from water through physical means. Common mechanical deoxygenation equipment includes deaerators and degassers. Deaerators remove oxygen by spraying water into a thin film, utilizing the difference in gas solubility. Degassers remove oxygen by spraying water into fine droplets, also leveraging the difference in gas solubility. 2. Thermal Deoxygenation: Removing oxygen from water by heating the water body, taking advantage of the property that oxygen solubility decreases with temperature. Common thermal deoxygenation equipment includes deaerating pots and deaerators. Deaerating pots release oxygen from water by heating it to saturation temperature. Deaerators remove oxygen by heating water, utilizing the decreased solubility of 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 of deoxygenation method depends 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.

Safety requirements for steam boiler valves mainly include the following aspects: Valve Selection: Choose the appropriate type and specification of valves for steam boilers. Valves should comply with relevant standards and specifications, and possess characteristics such as high-temperature resistance, pressure resistance, and corrosion resistance. Valve Installation: Valves should be installed correctly in the corresponding positions of the steam boiler. During installation, ensure the connections are secure, the seals are reliable, and prevent leaks and loosening. Valve Operation: Valve operation should be convenient, flexible, and able to accurately control steam flow and pressure. The handle or device should indicate the opening and closing directions of the valve, as well as the corresponding operation methods. Valve Sealing: Valve sealing performance is crucial. Valves should have good sealing properties to prevent steam leakage and energy loss. The sealing surface should be flat, smooth, and able to withstand high temperatures and wear. Valve Maintenance: Regularly inspect and maintain valves to ensure their normal operation and safety performance. This includes cleaning valves, checking sealing surfaces, lubricating moving parts, and timely repairing or replacing damaged components. Safety Valve: Safety valves must be installed on steam boilers to protect the safe operation of the boiler. Safety valves should comply with relevant standards and specifications and be capable of automatically opening to release excess pressure steam when over the set pressure, preventing boiler explosions. Valve Identification: Valves should be marked with their type, specification, working pressure, and flow rate information. This aids operators in correctly identifying and operating valves, avoiding incorrect operations and accidents. It should be noted that the above safety requirements are general guidelines, and specific safety requirements must be determined based on the type, scale, and operating environment of the steam boiler. When using valves, follow relevant laws, regulations, and safety operation procedures to ensure the safe and effective operation of valves.

When addressing issues with gas boilers during the heating process, consider the following aspects:  Check the gas supply: Ensure the gas supply is normal and inspect for any blockages or leaks in the gas pipeline. If any issues are found, repair or replace the gas pipeline promptly.  Clean the burner and combustion chamber: Regularly clean the burner and combustion chamber to remove accumulated dust and dirt. This enhances combustion efficiency and reduces gas waste.  Inspect and adjust the gas-to-air ratio: Ensure the gas-to-air ratio is appropriate for optimal combustion. An incorrect ratio can lead to incomplete combustion or excessive waste gas.  Inspect and clean the heat exchanger: Regularly inspect and clean the heat exchanger to remove dust and dirt. This improves heat exchange efficiency and ensures effective heat transfer to the heating system.  Inspect and maintain the circulating pump and valves: Ensure the circulating pump and valves are operating correctly to allow smooth flow of hot water or steam to the heating system.  Inspect and maintain the control system: Ensure the gas boiler's control system operates properly, allowing accurate control of parameters such as temperature, pressure, and flow. If problems are detected, repair or replace the controller promptly.  Regular maintenance: Conduct regular maintenance on the gas boiler, including cleaning, lubricating, and tightening bolts, to extend its lifespan and reduce the occurrence of malfunctions.  Training and awareness: Provide staff training to enhance awareness of operating and maintaining gas boilers. Improved knowledge and skills among employees aid in effective management and problem-solving during the heating process.  If the issue cannot be resolved or poses a safety

To extend the service life of steam boilers, the following measures can be taken: - Regular Maintenance: Perform regular maintenance on the boiler, including cleaning the burner, flue, and heat exchanger, inspecting and replacing worn parts, to ensure normal operation and efficiency. - Water Quality Control: Maintain good water quality in the boiler to prevent scale and corrosion from damaging the boiler. Conduct regular water quality tests and implement appropriate water treatment measures based on test results, such as descaling and replenishing missing chemicals. - Control the Combustion Process: Properly control the combustion process to ensure the normal operation and efficiency of the burner. Regularly check the burner's working condition, adjust combustion parameters, and avoid overheating or underheating issues. - Regular Cleaning of Flues and Heat Exchangers: Regularly clean the flues and heat exchangers to remove accumulated soot and dirt, maintain heat exchange efficiency, and avoid overheating and energy loss. - Regular Inspection of Safety Devices: Regularly inspect the boiler's safety devices, including safety valves, pressure switches, and water level controllers, to ensure their normal operation and ensure the safe operation of the boiler. - Record Keeping and Monitoring: Record the boiler's operating parameters, maintenance records, and fault conditions, and regularly monitor and analyze them to identify and address issues promptly. - Train Operators: Ensure that operators have sufficient knowledge of boiler operation and maintenance, operate and maintain the boiler correctly, and avoid damage caused by operational errors or improper maintenance. - Regular Overhauls: Based on the boiler's usage and the manufacturer's recommendations, conduct regular major repairs and overhauls, replacing worn-out components to extend the boiler's service life. - Please note that for safety and effectiveness, it is best to have trained personnel perform maintenance and repairs.
Our company places great emphasis on technological innovation and R&D, with 1 municipal-level enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, and more. We are equipped with over 600 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, plasma welding machines, and more. Our key products and technologies, such as welding for temperature and pressure vessels, biomass boiler emission reduction, and waste heat utilization, have 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. We have accumulated 27 authorized utility model patents, 16 authorized invention patents, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technology for deep cryogenic vessel processing, jointly developed by our technical team and Professor Li Yajiang of Shandong University, utilizes the international plasma arc + wire filling tungsten inert gas arc welding (PAW-GTAW) technology, and has been appraised as reaching an international level in deep cryogenic vessel manufacturing after provincial-level scientific and technological achievement identification.
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