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-freezing 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 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.
Standard parameters for carbon dioxide storage tanks can vary depending on design and application requirements. Here are some common standard parameters: - Tank Capacity: The capacity of carbon dioxide storage tanks is typically expressed in kiloliters (L) or cubic meters (m). Common capacity ranges vary from a few thousand to tens of thousands of liters. - Working Pressure: The working pressure of carbon dioxide storage tanks is usually around 20 to 25 MPa (megapascals) at normal temperatures, with the specific pressure determined by application needs and design standards. - Design Temperature: The design temperature of carbon dioxide storage tanks is usually within a low-temperature range, generally from -40℃ to -60℃, to accommodate the liquefaction and storage requirements of carbon dioxide. - Material: Carbon dioxide storage tanks are commonly made from high-strength steel or alloy materials to withstand the stresses and loads under high-pressure and low-temperature conditions. - Insulation: The tank interior is equipped with an insulation layer to reduce heat transfer and liquid evaporation. The insulation is typically a multi-layered structure, including insulating materials and an external protective layer. - Safety Valves and Pressure Relief Devices: The tank is equipped with safety valves and pressure relief devices to control internal pressure and prevent overpressure and explosions. - Level Monitoring and Control: The tank is fitted with level monitoring equipment to monitor the liquid level inside. Timely monitoring and control of the level ensure the liquid storage within the tank is within a safe range. - It is important to note that the specific standard parameters for carbon dioxide storage tanks may vary depending on different design standards, application requirements, and manufacturers. When selecting and using carbon dioxide storage tanks, it is necessary to consider these factors.

A carbon dioxide storage tank pressure maintenance system is a system designed to maintain the internal pressure of a carbon dioxide storage tank. Since carbon dioxide is a gas at room temperature, it needs to be compressed into a liquid form for storage to increase density. The primary function of the pressure maintenance system is to monitor and regulate the internal pressure of the tank, ensuring that the carbon dioxide remains within a safe and stable pressure range. The system typically consists of the following components: - Pressure Sensors: Installed inside the tank, they monitor the pressure in real-time and transmit pressure signals to the control system. - Control System: Receives signals from the pressure sensors and controls the tank's pressure within a preset range. When the pressure inside the tank exceeds or falls below the set range, the control system triggers appropriate control measures. - Pressure Regulating Valve: Adjusts the pressure inside the tank according to the control system's instructions. When pressure is too high, the valve opens to release some gas to lower the pressure. When pressure is too low, the valve closes to prevent further gas release and increase the pressure. - Pressure Storage Device: Usually a pressure vessel used to store additional gas for providing extra pressure support as needed. When the tank's pressure drops, the storage device releases gas to maintain the pressure inside the tank. Through the coordinated operation of these components, the carbon dioxide storage tank pressure maintenance system ensures that the pressure within the tank remains safe and stable. This is crucial for the normal operation and safety of the tank.

The construction features of carbon dioxide storage tanks mainly include the following aspects: Material Selection: Carbon dioxide storage tanks are typically made of carbon steel or stainless steel to ensure their corrosion resistance and pressure-bearing performance. Welding Technique: The welding technique of the tank is crucial for its quality and safety. The welding process should comply with relevant standards and specifications to ensure the quality and strength of the welds. Corrosion Prevention Measures: Due to the corrosive nature of carbon dioxide, both the internal and external surfaces of the tank should be treated for corrosion prevention. Common corrosion prevention methods include applying anti-corrosion paint, coating with a protective layer, or using anti-corrosion coatings. Safety Valves and Pressure Sensors: The tank should be equipped with safety valves and pressure sensors to monitor and control the internal pressure of the tank, ensuring safe operation. The steps for correctly installing a carbon dioxide storage tank are as follows: Site Preparation: Select an appropriate site for installation, ensuring the site is level, stable, and meets safety distance requirements. Clear the site to ensure there are no obstructions or fire sources. Foundation Construction: Construct the foundation based on the tank's dimensions and weight. The foundation should have sufficient strength and stability to support the tank's weight and pressure. Tank Installation: Place the tank on the foundation, ensuring there is appropriate padding and fastening equipment between the tank and the foundation. Connect and secure the tank according to its design requirements. Pipe Connection: Connect the tank to the piping system as needed. Ensure the connections are sealed properly to prevent leaks. Safety Equipment Installation: Install the required safety equipment for the tank, such as safety valves, pressure sensors, and temperature sensors. Ensure these facilities are properly installed and connected. Safety Valve and Pressure Sensor: The tank should be equipped with a safety valve and pressure sensor to monitor and control the internal pressure, ensuring safe operation.

Common drawbacks of corrosion in pressure vessels during use include: Chemical media: Some chemical media are corrosive, such as acids, bases, salts, etc. When these media come into contact with the vessel material, corrosion may occur. Humidity and moisture: High humidity environments or long-term exposure to moisture can cause corrosion on the vessel surface. Particularly in the presence of oxygen, the corrosion rate may increase. Rusting: When the protective layer on the vessel surface (such as coatings or plating) is damaged or destroyed, the vessel may suffer rusting. Rusting can damage the surface of the vessel and may lead to further corrosion. Electrochemical corrosion: When different metals or metals and non-metals come into contact, an electrochemical corrosion battery may form. This type of corrosion can lead to localized corrosion on the vessel surface. Welding defects: Defects like weld pores and cracks may be introduced during the welding process. These defects may become starting points for corrosion. Corrosion weakens the structural integrity of the vessel, increasing the risk of leakage or rupture. Therefore, regular inspection and maintenance of the corrosion-resistant layer, coating, or plating on pressure vessels are important. If corrosion issues are found, timely measures should be taken for repair or replacement of the damaged parts. Additionally, selecting appropriate materials and corrosion prevention measures, as well as proper operational and maintenance methods, can reduce the risk of corrosion in pressure vessels. Adhering to relevant safety operating procedures and standards ensures the safe operation of pressure vessels.
Zhong Jie Special Equipment upholds 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 offer products and services with high performance and cost-effectiveness to contribute to society!