Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) holds an A-grade boiler manufacturing license, an A2-grade pressure vessel manufacturing license, an A2-grade pressure vessel design license, a B-grade boiler installation license, and GB2/Class, GC2/Class pressure pipeline installation licenses, as well as an equipment and machinery installation contracting qualification. It is a member of the China Boiler and Water Treatment Association, the China Chemical Equipment Association, and the council member of the Shandong Equipment Manufacturing Association. The company has also passed the ISO9001 Quality Management System, ISO14001 Environmental Management System, OHSAS18001 Occupational Health and Safety Management System certifications, and the American ASME/U2 certification.
The safe operation of low-temperature carbon dioxide storage tanks is primarily key in the following aspects: Design and Manufacturing: The tank's design and construction must comply with relevant standards and regulations, ensuring it can withstand working conditions under low temperatures and high pressures. The tank should have sufficient strength and sealing performance to prevent leaks and ruptures. Safety Valves and Pressure Control: The tank should be equipped with safety valves and pressure control devices to ensure internal pressure remains within safe limits. Safety valves should be regularly inspected and tested to ensure proper functioning. Temperature Control: Effective temperature control is necessary for low-temperature carbon dioxide storage tanks to prevent freezing or embrittlement due to excessively low temperatures. Appropriate insulation materials and equipment should be used to maintain the tank and pipeline temperatures within safe ranges. Leak Detection and Alarm: The tank should be fitted with leak detection devices and alarm systems, along with corresponding monitoring equipment. These devices can detect leaks promptly and trigger alarms for appropriate action. Safe Operation and Training: Operators should receive relevant training to understand the safe operation procedures and standards for low-temperature carbon dioxide storage tanks. Operators should be familiar with the tank's characteristics, working principles, and emergency response measures. Regular Inspections and Maintenance: Tanks should be regularly inspected and maintained, including visual inspections, anti-corrosion coating maintenance, and leak detection. Regular inspections can help identify potential issues early and take appropriate corrective actions. Emergency Preparedness: Establish an emergency response plan and equip with appropriate fire-fighting and first-aid equipment. Operators should be familiar with emergency procedures and be able to respond quickly to emergencies. Please note that the above points are general recommendations. Specific safe operation should be based on the design and usage requirements of the low-temperature carbon dioxide storage tank. It is recommended to refer to relevant safety operation manuals and guidelines before using the tank to ensure operational safety.

When conducting routine inspections of carbon dioxide storage tanks, follow these steps: - Visual Inspection: Check for any obvious damage, corrosion, or oil leakage on the tank's exterior. Pay attention to any anomalies in the tank shell, valves, and pipe connections. - Valve and Pipe Inspection: Verify that the tank's inlet and outlet valves and pipe connections are functioning normally, for any leaks or loose fittings. Ensure valves operate smoothly and reliably. - Pressure Relief Device Inspection: Check that the tank's pressure relief devices (such as safety valves) are functioning properly. Confirm that the set pressure of the relief devices meets requirements. - Level Measurement System Inspection: Check the accuracy and reliability of the level measurement system. Calibrate the level sensors to ensure accurate level measurements. - Pressure and Temperature Inspection: Verify that the tank's pressure and temperature sensors are operating correctly. Confirm the accuracy of pressure and temperature measurements. - Safety Equipment Inspection: Check the tank's safety equipment, such as safety valves, pressure sensors, and temperature sensors, for proper operation. Confirm that their set parameters meet requirements. - Fire Protection Equipment Inspection: Ensure that the fire protection equipment around the tank is intact and check that fire extinguishers, sprinkler systems, etc., are functioning normally. - Liquid and Gas Quality Inspection: Ensure that the carbon dioxide liquid and gas in the tank meet quality requirements, with no impurities or contaminants. - Record and Report: Document the date of inspection, the content of the inspection, any issues found, and the measures taken. Submit inspection reports to relevant departments or management as needed. - The above are general steps for routine inspections of carbon dioxide storage tanks. Specific operations should be tailored to the tank's characteristics and requirements. When conducting inspections, follow relevant safety operating procedures and have trained personnel perform the operations.

Carbon dioxide (CO2) and liquid oxygen (LOX) storage tanks are used for storing different gases, with some physical differences: - Physical state: CO2 is a gas at room temperature and requires low temperatures and high pressure to become liquid. LOX is a liquid at room temperature and can maintain its liquid state without special conditions. - Storage temperature: The liquid CO2 storage temperature is typically between -40°C and -78.5°C, while the liquid oxygen storage temperature is usually between -183°C and -183.15°C. The storage temperature of LOX is lower, requiring stricter insulation measures. - Storage pressure: The liquid CO2 storage pressure is generally between 5-20 MPa, while the liquid oxygen storage pressure is typically between 0.2-2 MPa. The storage pressure of LOX is lower. - Density: The density of liquid CO2 is approximately 0.8 g/cm³, while the density of liquid oxygen is about 1.14 g/cm³. The density of liquid oxygen is higher. - Safety: LOX has a high oxygen content, making it highly flammable and oxidizing, requiring stricter safety measures. CO2 is relatively safe but can still pose health risks at high concentrations.

二氧化碳储罐的检验频率应根据当地的法规、标准和制造商的建议来确定。一般来说，以下几个因素会影响二氧化碳储罐的检验频率： 法规和标准要求：不同和地区可能有不同的法规和标准，规定了储罐的检验要求和频率。例如，美国的DOT标准要求液化气体储罐每5年进行一次外部检验和每10年进行一次内部检验。 制造商建议：储罐的制造商通常会提供关于检验频率的建议。这些建议基于储罐的设计、材料和使用寿命等因素，可以作为制定检验计划的参考。 使用环境和条件：储罐的使用环境和条件也会影响检验频率。例如，如果储罐暴露在腐蚀性环境中或经常受到机械应力，可能需要更频繁的检验。 一般来说，液化气体储罐的外部检验通常是通过目视检查、超声波检测、磁粉检测等方法进行的，以评估储罐的外部状况和可能存在的缺陷。内部检验可能需要排空储罐，并通过内部检查、厚度测量、焊缝检测等方法来评估储罐的内部状况。 重要的是，储罐的检验应由经过培训和有经验的人员进行，并严格按照相关的法规、标准和制造商的建议进行。定期的检验和维护可以确保储罐的安全性和可靠性，减少事故的风险。
Our company places great importance on technological innovation and R&D, boasting 1 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 equipped 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 and technologies we have developed, such as welding for temperature and pressure vessels, biomass boiler emissions reduction, and waste heat utilization, have successively been shortlisted for multiple Shandong Provincial Department of Industry and Information Technology Science and Technology Innovation projects, key projects in Shandong Province, and Heze City innovation and excellence projects, etc. 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 technical team of our company, in collaboration with Professor Yajiang Li from Shandong University, has developed deep cryogenic container processing technology, utilizing the international plasma arc + wire filling tungsten inert gas arc welding (PAW-GTAW) technology. After being appraised as a provincial-level scientific and technological achievement, our technology level has reached international standards in the field of deep cryogenic container manufacturing. Choose Zhongjie Special Equipment, let's join hands to create brilliance together!