Shandong Zhongjie Special Equipment specializes in: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulated cryogenic pressure vessels such as LNG storage tanks, oxygen/nitrogen/argon storage tanks, CO2 storage tanks; pressure vessel products including denitrification engineering equipment, heat storage and energy storage equipment, complete chemical equipment sets; 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.
During the production welding of a thermal oil boiler, the following points should be noted: - Welder Qualifications: Ensure that the welders involved in the welding work possess appropriate qualifications and experience, and are familiar with welding techniques and procedures. - Welding Material Selection: Choose welding materials suitable for the thermal oil boiler, ensuring compatibility with the thermal oil and high-temperature resistance. - Welding Process Control: Select the appropriate welding process based on the material and design requirements of the thermal oil boiler, such as manual arc welding or gas shielded welding. Control welding parameters like current, voltage, and welding speed to ensure the quality and strength of the weld. - Welding Area Protection: During welding, protect the welding area to prevent contamination from the thermal oil and welding materials. Use equipment such as welding screens or covers to ensure the cleanliness and safety of the welding area. - Post-Welding Treatment: After welding, post-treatment of the weld should be performed, such as slag removal, sanding, and cleaning, to ensure the flatness and surface quality of the weld. - Welding Quality Inspection: Conduct welding quality inspections, including visual inspection of the weld, dimensional measurements, and non-destructive testing, to ensure the welding quality meets requirements. - Safety Measures: Pay attention to safety measures during welding, such as wearing protective eyewear, gloves, and fire-resistant clothing, to ensure the safety of welding operations. - It is important to adhere to relevant standards and specifications during the welding process to ensure the quality and safety of the welding. If unsure about how to perform welding or if there are safety hazards, seek advice from a welding engineer or consult relevant agencies.

Chemical cleaning of industrial boilers is a common method used to effectively remove dirt and scale from within the boiler, enhancing heat exchange efficiency and extending the boiler's lifespan. The following are general steps and methods for industrial boiler chemical cleaning: Preparation: Turn off the boiler's power and gas supply, drain the water and steam from the boiler, and ensure the boiler is in a safe condition. Prepare the required chemical cleaning agents and equipment. Cleaning Agent Selection: Choose a suitable chemical cleaning agent based on the boiler's material and the nature of the dirt. Common cleaning agents include acidic, alkaline, and chelating agents. Cleaning Agent Circulation: Dissolve the cleaning agent in an appropriate amount of water and circulate it into the boiler using a pump. Determine the circulation time and temperature of the cleaning agent based on the size of the boiler and the extent of the dirt. Cleaning Agent Action: During circulation, the cleaning agent reacts with the dirt inside the boiler, dissolving and decomposing it. Acidic cleaning agents can remove rust and scale, while alkaline cleaning agents can remove grease and organic matter. Rinsing and Neutralizing: After the cleaning agent circulation is complete, rinse the boiler with clean water to flush out the cleaning agent and dissolved dirt. Use a neutralizer to neutralize any remaining acidic or alkaline substances to ensure the boiler's neutrality. Inspection and Maintenance: After cleaning, inspect the boiler to ensure the cleaning effect and normal operation. Perform maintenance and repair as needed. Points to Note During Industrial Boiler Chemical Cleaning: 1. Strictly follow the usage instructions and safety operating procedures for chemical cleaning agents to ensure the safety of operators. 2. Select appropriate cleaning agents and methods based on the boiler's material and the properties of the cleaning agents. 3. Control the concentration, temperature, and circulation time of the cleaning agent to avoid unnecessary damage to the boiler. 4. Monitor the concentration and pH value of the cleaning agent in a timely manner during the cleaning process and adjust the cleaning conditions accordingly. 5. After cleaning, flush the boiler to ensure the complete removal of cleaning agents and dirt. 6. Perform maintenance and repair on the boiler promptly after cleaning to ensure normal operation and long-term use.

For the maintenance of industrial gas-fired boilers, here are some common methods and precautions: Clean the burner: Regularly clean the interior and nozzle of the burner to ensure normal combustion of the gas, avoiding carbon accumulation and blockages. Inspect the gas supply system: Regularly check the gas supply system, including gas pipes, valves, and pressure regulators, to ensure normal gas supply, no leaks, or blockages. Clean the flue and heat exchanger: Regularly clean the flue and heat exchanger to remove dust and dirt, maintaining heat exchange efficiency, and avoiding overheating and energy loss. Check water level and pressure: Regularly inspect the boiler's water level and pressure to ensure safe operation within the specified range. Refill water and adjust pressure to avoid issues caused by low or high water levels. Inspect safety devices: Regularly check the boiler's safety devices, including safety valves, pressure switches, and water level controllers, to ensure they are functioning properly and guarantee safe boiler operation. Check the control system: Regularly inspect the boiler's control system, including automatic controllers, sensors, and instruments, to ensure accuracy and reliability, and to promptly detect and repair faults. Scheduled maintenance: Regularly perform maintenance, including lubricating parts, replacing worn components, and checking electrical connections, to extend the boiler's lifespan and stability. Keep records: Record the boiler's operating parameters, maintenance records, and fault situations to help promptly identify problems and analyze operational conditions. Train operators: Ensure operators have sufficient

The inspection of the heat-conducting oil boiler tube plates is crucial for ensuring the safe operation of the boiler and preventing potential issues. The following are general steps for inspecting heat-conducting oil boiler tube plates: Visual Inspection: Conduct a visual inspection to check for any obvious corrosion, cracks, deformation, or other anomalies on the surface of the tube plates. Pay special attention to checking for cracks or leaks at the welds and connections. Cleaning the Tube Plates: Clean the surface of the tube plates thoroughly to remove dirt and deposits, facilitating the inspection process. Ultrasonic Testing: Use an ultrasonic testing device to inspect the tube plates to detect any possible cracks or other defects. Ultrasonic testing can help determine the integrity and reliability of the tube plates. Pressure Testing: Perform a pressure test to verify the sealing and pressure-bearing capabilities of the tube plates. Gradually increase the pressure during the test, observe for any leakage, and ensure the tube plates can withstand the design pressure. Tube Plate Thickness Measurement: Use an ultrasonic thickness gauge to measure the thickness of the tube plates to ensure they meet the design requirements. Pay particular attention to the corrosion status, ensuring it remains within safe limits. Weld Inspection: Inspect the welds of the tube plates to ensure the quality meets relevant standards and specifications. Check the integrity of the welds, the quality of the weld, and whether the welding process meets requirements. Documentation and Reporting: Record and report the inspection results of the tube plates, including any issues found, corrective measures, and recommendations. These records and reports can serve as references for future maintenance and management. It should be noted that the inspection of heat-conducting oil boiler tube plates should be carried out by qualified personnel and strictly in accordance with relevant standards and specifications. If any issues or anomalies are detected, appropriate repair and maintenance measures should be taken promptly to ensure the safe operation of the boiler.
Our company attaches great importance to technological innovation and R&D design. We have 1 municipal-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 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, key projects in Shandong Province, and Heze City innovation and excellence projects. We have accumulated a total of 27 authorized utility models, 16 authorized inventions, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. The technical team of our company, in collaboration with Professor Yajiang Li from Shandong University, has developed deep cryogenic container processing technology using the international plasma arc + wire filling argon arc welding (PAW-GTAW) technology. The provincial-level scientific and technological achievement identification has confirmed that the technology level in the field of deep cryogenic container manufacturing has reached an international standard.
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