Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Economic and Technological Development Zone, Heze City. With a registered capital of 50 million yuan and total assets of 500 million yuan, the company operates 7 major business centers: boilers, deep-freeze vessels, pressure vessels, central air conditioning, engineering installation, international trade, and the Internet of Things. It has three manufacturing sites on Jinnan Road, East Yangtze Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop spanning 83,000 square meters. Currently, there are 710 employees, including 247 engineers and technicians and 82 middle-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.
In industrial boiler systems, the key functional parameters of pumps include the following aspects:  Flow Rate: The flow rate of a pump refers to the volume of liquid pumped per unit of time. In industrial boilers, pumps must provide sufficient flow to meet the boiler's water requirements. The flow rate depends on the boiler's rated evaporation capacity and the design requirements of the circulating water system. Head: The head of a pump is its ability to overcome liquid resistance and lift the fluid to a certain height. In industrial boilers, pumps must have adequate head to ensure smooth flow to all parts of the boiler, including the feedwater and circulating water systems. Power: The power of a pump is the electrical or mechanical energy required to drive the pump. In industrial boilers, the power of the pump must be determined based on flow rate and head to meet the system's needs. Efficiency: The efficiency of a pump is the ratio of the input energy to the output fluid energy. High-efficiency pumps can reduce energy consumption and operating costs. In industrial boilers, selecting high-efficiency pumps can improve the system's energy efficiency performance. Operational Stability and Reliability: Pumps in industrial boiler systems must have good operational stability and reliability. They should be able to run stably for long periods without being affected by external disturbances or fluctuations and should be adaptable to different operating conditions. Pumps should be selected based on the specific industrial boiler system and design requirements, ensuring that the functional parameters meet the system's needs. Additionally, the selection and operation of pumps must comply with relevant standards and regulations to ensure safe and reliable operation.

Chemical cleaning of industrial boilers is a common method that effectively removes dirt and sediments inside the boiler, enhancing heat exchange efficiency and extending the boiler's lifespan. Below are the 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, ensuring 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 cleaners, alkaline cleaners, 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 the circulation, the cleaning agent reacts chemically with the dirt inside the boiler, dissolving and decomposing it. Acidic cleaners can remove rust and scale, while alkaline cleaners can remove grease and organic matter. Rinsing and Neutralization: After the cleaning agent circulation, rinse the boiler with clean water to flush out the cleaning agent and dissolved dirt. At the same time, use a neutralizing agent to neutralize any remaining acidic or alkaline substances, ensuring the boiler's neutrality. Inspection and Maintenance: After cleaning, inspect the boiler to ensure the cleaning effect and normal operation. Perform necessary maintenance and repair work as needed. Points to Note When Conducting Industrial Boiler Chemical Cleaning: 1. Adhere strictly to the usage instructions and safety operation procedures for chemical cleaning agents to ensure the safety of the operators. 2. Choose the appropriate cleaning agent and method based on the boiler's material and the cleaning agent's properties. 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, adjusting the cleaning conditions as needed. 5. After cleaning, rinse the boiler to ensure that all cleaning agents and dirt are completely removed. 6. Perform boiler maintenance and repair promptly after cleaning to ensure normal operation and long-term use.

During the production welding of thermal oil boilers, the following points should be noted: - Welder Qualification: Ensure that the welders involved in the welding work have appropriate qualifications and experience, and are familiar with welding processes and operational procedures. - Welding Material Selection: Choose welding materials suitable for thermal oil boilers, ensuring their compatibility with thermal oil and high-temperature resistance. - Welding Process Control: Select an appropriate welding process, such as manual arc welding or gas shielded welding, based on the material and design requirements of the thermal oil boiler. Control welding parameters like current, voltage, and welding speed to ensure the quality and strength of the weld. - Welding Area Protection: During the welding process, protect the welding area to prevent contamination from thermal oil and welding materials. Use welding barriers, welding shields, and other equipment to ensure the cleanliness and safety of the welding area. - Post-Welding Treatment: After welding, post-treatment of the weld is required, such as slag removal, grinding, 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 that the welding quality meets requirements. - Safety Measures: Pay attention to safety measures during the welding process, such as wearing protective eyewear, gloves, and fire-resistant clothing, to ensure the safety of welding operations. - It is important to follow relevant standards and specifications during the welding process to ensure welding quality and safety. If unsure about how to perform welding or if there are potential safety hazards, seek advice from a welding engineer or consult relevant agencies.

In the burner of a thermal oil furnace, adjusting the air door under low flame conditions is crucial. Here are some common knowledge and precautions: Function of the air door: The air door is a key component in the burner that controls the supply of combustion air. By adjusting the opening of the air door, the flow of combustion air can be controlled, thereby affecting the oxygen supply and combustion effect during the burning process. Adjustment under low flame conditions: Under low flame conditions, the burner needs to maintain a stable combustion to ensure combustion efficiency and heat output. In this case, it is necessary to adjust the opening of the air door appropriately to maintain an adequate supply of combustion air. Generally, the opening of the air door is relatively smaller during low flame to maintain an appropriate oxygen supply and avoid incomplete combustion or instability. Ratio of combustion air to fuel: Under low flame conditions, it is essential to ensure the proper ratio of combustion air to fuel. Too much combustion air can lead to incomplete combustion and energy waste, while too little can cause unstable combustion and the production of harmful gases. By adjusting the opening of the air door, the ratio of combustion air to fuel can be controlled to achieve a stable combustion effect. Burner tuning and optimization: During the installation and tuning of the burner of a thermal oil furnace, proper tuning and optimization are required. Through actual operation and monitoring, adjust the opening of the air door and other parameters to achieve the best combustion effect and energy efficiency performance. This requires basing
Our company attaches great importance to technological innovation and research and development, boasting 1 city-level enterprise technology center in Heze City. We have established testing facilities for non-destructive testing, physical and chemical tests, welding tests, hydrostatic tests, and more. We are equipped with over 600 various instruments and equipment, including CNC machine tools, X-ray flaw detectors, digital ultrasonic flaw detectors, mechanical property test machines, chemical analyzers, spectrometers, tensile test machines, plasma welding machines, and more. Our developed technologies for welding of temperature-pressure vessels, biomass boiler emissions reduction, and waste heat recovery 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. 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 company's technical team, in collaboration with Professor Li Yajiang of Shandong University, has jointly developed deep cryogenic container processing technology using the internationally recognized plasma arc + filler wire tungsten inert gas (PAW-GTAW) technology, which has been appraised as internationally competitive at the provincial level for scientific and technological achievements.
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