Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Development Zone, Heze City, with a registered capital of 50 million yuan and total assets of 500 million yuan. The company has 7 business centers: boiler, deep-freezing container, pressure vessel, central air conditioning, engineering installation, international trade, and Internet of Things. It operates three factory sites at Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop area being 83,000 square meters. It currently employs 710 people, including 247 engineering and technical personnel and 82 intermediate-level technicians. In December 2016, it was recognized as a "High-tech Enterprise" by the Science and Technology Department. In June 2021, it was identified as a "Specialized and New Enterprise in Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was recognized as a "Gazelle Enterprise in Shandong Province" and in August 2022, as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Excessive exhaust gas temperature in a thermal oil boiler may be due to several reasons: Incomplete combustion: If the fuel in a thermal oil boiler is not fully combusted, it leads to a high concentration of unburned fuel and harmful substances in the flue gas, raising the exhaust gas temperature. Possible causes include insufficient fuel supply, improper adjustment of the burner, and burner wear. Excessive air: Excess air can lower the combustion temperature, making the heat in the flue gas insufficient to reduce the flue gas temperature to a reasonable range. Causes of excessive air may include improper burner adjustment and overly open air doors. Choked flue: Accumulated ash, slag, or other impurities in the flue can obstruct the flow of flue gas, increasing the residence time of the flue gas and raising the exhaust gas temperature. Abnormal thermal oil flow: Abnormal thermal oil flow, either too high or too low, can lead to uneven heat transfer, increasing the flue gas temperature. Boiler overheating: If the temperature control of the thermal oil boiler is not properly managed, causing overheating, it will raise the exhaust gas temperature. Boiler design issues: Design problems in the boiler, such as a small flue or poor flue gas flow, may also lead to excessive exhaust gas temperature. To address the issue of high exhaust gas temperature, a comprehensive inspection and analysis of the thermal oil boiler is required. Solutions may include adjusting burner parameters, cleaning the flue, checking thermal oil flow and temperature control. In severe cases, boiler system modification or repair may be necessary. Additionally, regular maintenance and inspections are crucial preventive measures against high exhaust gas temperature.

When operating a gas boiler, there are three important points to keep in mind: 1. Safe Operation: A gas boiler is a thermal energy device, and safety must be a priority. First, ensure that the operator has the relevant skills and knowledge, understanding the boiler's working principles and operation procedures. Second, strictly prohibit storing flammable materials around the boiler and maintain good ventilation. Additionally, regularly inspect and maintain the safety valve, pressure gauge, and other safety devices to ensure proper functioning. 2. Proper Gas Supply Adjustment: The combustion of a gas boiler requires an appropriate amount of gas supply. During operation, adjust the gas supply according to actual needs to ensure stable combustion. Also, regularly check the密封性 of the gas pipeline and valves to prevent gas leaks. 3. Regular Maintenance and Cleaning: Regular maintenance and cleaning of a gas boiler are crucial for maintaining proper operation and extending its lifespan. Regularly inspect all parts of the boiler, clean the burner, flue, and heat exchanger to remove dust and dirt, ensuring efficient heat transfer and combustion. Furthermore, regularly replace filters and clean water treatment equipment to ensure clean water quality, preventing scale and corrosion. Note that these three points are just basic operating guidelines, and specific operational and maintenance requirements may vary depending on the model and specifications of the gas boiler. Therefore, before operating a gas boiler, it's advisable to refer to the boiler's manual or consult with experts to ensure correct and safe operation.

Properly utilizing fuel-gas boilers can enhance energy efficiency and reduce consumption. Here are some suggestions: 1. Select the right boiler model: Choose a suitable fuel-gas boiler model based on actual needs, considering factors like heat load, fuel type, and combustion efficiency. 2. Regular inspection and maintenance: Conduct regular checks and maintenance to ensure the boiler operates smoothly. This includes cleaning burners, inspecting the combustion system, adjusting parameters, and promptly repairing or replacing damaged parts. 3. Control the combustion process: Manage the combustion process to ensure it's thorough, stable, and efficient. Adjust burner parameters like air flow and fuel supply to improve efficiency and minimize waste. 4. Heat recovery: Utilize heat recovery systems to capture and reuse excess heat from flue gases, heating water or other processes requiring heat, thereby increasing energy efficiency. 5. Control operating parameters: Adjust boiler operating parameters like water level, pressure, and temperature based on actual needs and conditions. Avoid extremes to enhance efficiency and safety. 6. Regularly clean heat exchangers: Clean the heat exchangers of fuel-gas boilers regularly to remove dirt and deposits, maintaining their thermal conductivity and reducing energy loss. 7. Energy management: Establish an energy management system, monitor and analyze consumption, and develop reasonable usage plans and energy-saving measures. Scientific management can boost energy efficiency and reduce consumption. These are common methods and suggestions, but specific applications should be determined based on actual conditions and boiler characteristics. Also, adhere to relevant laws, regulations, and safety procedures to ensure safe operation of fuel-gas boilers.

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 at the corresponding position on the steam boiler. During installation, ensure the connection is firm, the seal is reliable, and leaks and loosening are prevented. Valve Operation: Valve operation should be easy, flexible, and capable of accurately controlling steam flow and pressure. The handle or device should indicate the opening and closing direction of the valve, as well as the corresponding operation method. Valve Sealing: The sealing performance of the valve 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 the valves, checking the sealing surfaces, lubricating moving parts, and promptly repairing or replacing damaged components. Safety Valve: A safety valve must be installed on the steam boiler to protect its safe operation. The safety valve should comply with relevant standards and specifications and be capable of automatically opening and releasing over-pressured steam when the pressure exceeds the set value, 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 the valves, avoiding incorrect operations and accidents. It should be noted that the above safety requirements are general guidelines; specific safety requirements should 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 safe and effective valve operation and control.
Our company attaches great importance to technological innovation and R&D design, boasting one 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, etc., and 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 temperature-pressure vessel welding, biomass boiler emission reduction, and waste heat recovery, have successively been shortlisted for multiple Shandong Provincial Department of Industry and Information Technology innovation projects, key projects in Shandong Province, and innovative and excellent projects in Heze City. We have accumulated 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 Li Yajiang of Shandong University, has developed deep cryogenic container processing technology, utilizing the international plasma arc + filler wire argon arc welding (PAW-GTAW) technology, which has been appraised as reaching international standards in the field of deep cryogenic container manufacturing at the provincial level.
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