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: boilers, deep-freeze containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three factory sites on Jinnan Road, East Changjiang Road, and Bohai Road, covering a total of 200,000 square meters, with the main workshop spanning 83,000 square meters. It currently employs 710 people, including 247 engineers and technicians, 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 named a "Specialized and New Enterprise in Shandong Province" by the Ministry of Industry and Information Technology. In June 2022, it was identified as a "Gazelle Enterprise in Shandong Province" and in August 2022, it was recognized as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Possible causes of uneven heat distribution in steam boilers may include the following aspects: Uneven combustion: During the combustion process, uneven mixing of fuel and air, or improper design and adjustment of the burner, can lead to uneven combustion. This results in some areas producing more heat while others produce less. Pipe blockage: The presence of blockages or scale in the transport pipes of a steam boiler can cause uneven heat transfer. Blockages or scale impede steam flow, limiting heat transfer in certain areas while allowing better heat transfer in others. Heat exchanger issues: If the heat exchanger in a steam boiler has scaling, corrosion, or blockage problems, it can lead to uneven heat transfer. These issues can affect the thermal conductivity efficiency of the heat exchanger, impacting heat transfer in certain areas. Water level issues: Inaccurate or unstable water level control in a steam boiler can lead to uneven steam generation. Both high and low water levels can affect steam generation and distribution, causing uneven heat. Boiler load changes: Changes in the load of a steam boiler can also result in uneven heat distribution. Sudden increases or decreases in load may prevent the boiler from adjusting its heat generation and distribution in time, leading to uneven heat. To address the issue of uneven heat distribution in steam boilers, regular inspection and maintenance of boiler equipment are necessary to ensure the normal operation of combustion and heat exchange processes. Additionally, it is important to adjust burners and control systems reasonably, maintain stable water levels, clean pipes and heat exchangers, and improve overall efficiency.
Common malfunctions and troubleshooting methods for gas boiler burners are as follows:
1. Lack of flame or unstable flame: Check if the gas supply is normal and ensure the gas valve is open. Clean the burner nozzle to ensure the passage is clear. Inspect the ignition electrode for cleanliness, carbon buildup, or dirt. Adjust the gas-to-air ratio to ensure the correct mixture.
2. Incomplete combustion or black smoke: Verify if the gas supply is sufficient and adjust the gas pressure. Clean the burner nozzle and combustion chamber to ensure the passage is clear. Adjust the gas-to-air ratio to ensure the correct mixture. Check for carbon buildup or dirt in the burner and clean or replace damaged parts.
3. Difficulty or failure to ignite: Inspect the ignition electrode for cleanliness, carbon buildup, or dirt. Adjust the position and gap of the ignition electrode to ensure normal spark generation. Check if the ignition transformer or controller is functioning properly, and repair or replace damaged parts.
4. Abnormal noise from the burner: Check if the gas supply is normal and ensure the gas valve is open. Inspect the burner and combustion chamber for loose parts, tighten or replace damaged parts. Clean the burner and combustion chamber to ensure no carbon buildup or dirt.
If the above methods do not resolve the issue, it is recommended to contact a gas boiler maintenance professional for inspection and maintenance. Additionally, to ensure safety, follow the relevant safety operating procedures when using a gas boiler.
Chemical cleaning of industrial boilers is a common method that effectively removes dirt and deposits 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 cleaning 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 through 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 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 Neutralizing: After the cleaning agent circulation is complete, rinse the boiler with clean water to flush out the cleaning agent and dissolved dirt. Simultaneously, 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 effectiveness and normal operation. Perform necessary maintenance and upkeep as required.
Points to note when performing industrial boiler chemical cleaning:
- Strictly follow the instructions and safety operating procedures for chemical cleaning agents to ensure the safety of the operators.
- Select the appropriate cleaning agent and method based on the boiler's material and the cleaning agent's properties.
- Control the concentration, temperature, and circulation time of the cleaning agent to avoid unnecessary damage to the boiler.
- Monitor the concentration and pH of the cleaning agent in a timely manner during the cleaning process, adjusting the cleaning conditions as needed.
- After cleaning, flush the boiler to ensure the complete removal of cleaning agents and dirt.
- After cleaning, promptly perform maintenance and upkeep on the boiler to ensure normal operation and long-term use.
The drain systems for steam boilers generally include the following types: Drain Valves: Typically, a drain valve is installed on steam boilers for the purpose of discharging wastewater and impurities within the boiler. These valves are usually located at the bottom or side of the boiler, and by opening the drain valve, wastewater can be removed to maintain the cleanliness of the boiler's interior. Drain Pumps: In cases of large steam boilers or when long-distance wastewater discharge is required, drain pumps may be used. Drain pumps can extract wastewater from the boiler and transport it through pipes to designated discharge points. Automatic Drain Devices: Some steam boilers may be equipped with automatic drain devices. These devices can automatically discharge wastewater from the boiler based on pre-set time intervals or wastewater concentrations, enhancing the efficiency and accuracy of the drainage process. Wastewater Treatment Equipment: Under certain special circumstances, steam boilers may need to be fitted with wastewater treatment equipment. These units can treat the discharged wastewater, removing impurities and pollutants to meet environmental protection requirements. It is important to note that the selection and use of steam boiler drain systems should be determined based on the specific type, scale, and operating environment of the boiler. When using drain devices, it is essential to follow relevant operational procedures and safety requirements to ensure a safe and effective drainage process.
Changjie Special Equipment adheres to the grand vision of "realizing employees' dreams, creating customer value, and striving for the prosperity and strength of our motherland," and is dedicated to the development of the green energy equipment industry. We commit to society with high-quality, cost-effective products and services!




































