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 operates seven business centers: boiler manufacturing, deep-freezing containers, pressure vessels, central air conditioning, engineering installation, international trade, and Internet of Things. It has three manufacturing 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. The company currently employs 710 staff, 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, it was identified as a "Specialized and New Small Giant Enterprise" by the Ministry of Industry and Information Technology.
Design requirements for carbon dioxide storage tanks typically include the following aspects: Pressure Vessel Design: Carbon dioxide storage tanks are usually designed as high-pressure vessels capable of withstanding high pressures. The design must comply with relevant standards and regulations, such as Standard GB150 "Steel Pressure Vessels." Material Selection: The choice of materials for the tank should consider the properties of carbon dioxide, such as high pressure, high oxidizing, and corrosive nature. Common materials include carbon steel and stainless steel, selected based on specific working conditions and requirements. Safety Valve and Pressure Control: The tank should be equipped with a safety valve and pressure control devices to ensure internal pressure remains within a safe range. The safety valve should be selected according to design requirements and should be inspected and tested regularly to ensure proper functioning. Insulation Performance: Since carbon dioxide needs to remain in a liquid state at low temperatures, the tank should have good insulation properties to prevent excessive evaporation of liquid carbon dioxide and energy loss. The selection and design of insulation materials and layers should consider working temperatures and environmental conditions. Leak Detection and Alarm: The tank should be equipped with leak detection devices and alarm systems, along with corresponding monitoring equipment. These devices can detect leaks in a timely manner and trigger alarms to take appropriate actions. Structural Strength and Stability: The structural design of the tank should have sufficient strength and stability to withstand internal pressure and external loads. The structural design should comply with relevant standards and regulations, such as Standard GB12337 "Pressure Vessel Design Specifications." Safe Operation and Maintenance: The design of the tank should consider the ease of safe operation and maintenance, such as the placement of manholes, inspection ports, and drain ports.

Zhongjie Special Equipment is a company engaged in the manufacturing of low-temperature liquid storage tanks. They offer design, manufacturing, and installation services for low-temperature liquid carbon dioxide storage tanks. Here is an introduction to the low-temperature liquid carbon dioxide storage tanks produced by Zhongjie Special Equipment: Tank Type: The low-temperature liquid carbon dioxide storage tanks produced by Zhongjie Special Equipment are typically designed in vertical or horizontal configurations, chosen based on customer requirements and site conditions. Material: The tanks are primarily made of low-temperature steel, offering excellent corrosion and low-temperature resistance. Insulation: The tanks are internally insulated to minimize heat transfer and liquid evaporation. The insulation usually consists of a multi-layer structure, including thermal insulation materials and an external protective layer. Safety Valve and Pressure Relief Device: The tanks are equipped with safety valves and pressure relief devices to control internal pressure, preventing overpressure and explosions. Level Indicator: The tanks are fitted with level indicators for monitoring the liquid level inside, ensuring controlled and managed storage of the liquid. Safety Measures: Zhongjie Special Equipment's low-temperature liquid carbon dioxide storage tanks comply with relevant safety specifications and standards, implementing various safety measures such as fire and explosion prevention, leak detection, and alarm systems. Customized Design: Based on customer needs and application scenarios, Zhongjie Special Equipment can provide customized design and manufacturing services to meet the specific requirements of different customers.

The filling process for carbon dioxide tanks typically includes the following steps: Preparation: Ensure the tank and filling equipment are in good working condition. Inspect the tank's appearance and valves for any damage or leaks. Check the filling equipment's connection pipes and valves for loose fittings or leaks. Prepare liquid carbon dioxide: Extract liquid carbon dioxide from the supply source and transfer it to the tank of the filling equipment. Ensure the quality and purity of the liquid carbon dioxide meet the required standards. Connect the filling equipment: Attach the outlet pipe of the filling equipment to the tank's inlet valve. Ensure the connection is secure and there are no leaks. Open valves: Activate the corresponding valves on the filling equipment and the tank to allow liquid carbon dioxide to flow into the tank. Adjust the valves as needed to control the filling speed and pressure. Monitor liquid level: Use a level sensor or other level measuring device to monitor the liquid carbon dioxide level in the tank in real-time. Ensure the level is within a safe range and avoid overfilling. Filling complete: When the liquid level in the tank reaches the predetermined filling amount, close the corresponding valves on the filling equipment and tank to stop the filling of liquid carbon dioxide. Inspection and cleanup: Check the valves and pipe connections during the filling process for leaks. Clean up any remaining liquid carbon dioxide around the filling equipment and tank. Documentation and reporting: Record the relevant information of the filling process, including the filling date, filling amount, and level monitoring results. If necessary, submit the filling report to the relevant departments or management personnel. The above is a general process for filling carbon dioxide tanks. Specific operations should be tailored to the characteristics and requirements of the tank. When performing filling operations, follow relevant safety operating procedures and have trained professionals oversee the process.

CO2 flooding is a commonly used enhanced oil recovery technique, designed to increase the recovery rate of oil fields. It works by injecting CO2 gas into the reservoir to alter its physical and chemical properties, thereby promoting fluid flow and enhancing recovery. The working principle of CO2 flooding is as follows: - Solubility Principle: CO2 has a high solubility in oil. When CO2 gas is injected into the reservoir, it dissolves within the oil, reducing viscosity and surface tension, making it easier to flow. - Expansion Displacement Principle: After CO2 gas is injected into the reservoir, it expands to form a gas phase, increasing the internal pressure of the reservoir, which drives the oil towards the wellbore. Additionally, CO2's high permeability can improve the reservoir's permeability, enhancing fluid flow. - Chemical Reaction Principle: CO2 reacts with certain components in the oil, producing soluble substances that further reduce viscosity and improve fluidity. CO2 flooding technology offers certain advantages in oil field development, such as: - Environmental Friendliness: CO2 is a clean, non-toxic, and renewable gas. Using CO2 flooding can reduce environmental pollution. - Economic Viability: CO2 flooding can increase the recovery rate of oil fields, boost production, and thus enhance economic benefits. - Sustainability: CO2 can be separated from air or captured and stored from industrial flue gases, enabling the recycling of CO2 and ensuring sustainability. It is important to note that the application of CO2 flooding technology requires consideration of reservoir characteristics, geological conditions, and economic feasibility factors. Prior to implementing CO2 flooding, comprehensive reservoir evaluation and engineering design are necessary to ensure the effectiveness and safety of the technology.
Our company attaches great importance to technological innovation and R&D design. We have 1 municipal-level enterprise technology center in Heze City, with testing facilities for non-destructive testing, physical and chemical testing, welding testing, hydrostatic testing, etc. We are equipped with over 600 various 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. The key products we have developed, such as welding for temperature-pressure vessels, biomass boiler emissions reduction, and waste heat utilization, have successively been selected for multiple Shandong Provincial Department of Industry and Information Technology innovation projects, Shandong Provincial key projects, and Heze City innovation and excellence projects. We have accumulated 27 authorized utility model patents, 16 authorized invention patents, participated in drafting 2 standards, 2 industry standards, and registered 15 trademarks. Our technical team, in collaboration with Professor Li Yajiang of Shandong University, has developed deep cryogenic container processing technology using the internationally recognized plasma arc + wire filling tungsten inert gas arc welding (PAW-GTAW) technology. After provincial-level scientific and technological achievement appraisal, our technology level has reached international standards in the field of deep cryogenic container manufacturing. Choose ZJ Special Equipment, and let's create brilliance together!