Shandong Zhongjie Special Equipment's main products include: fuel (gas) boilers, organic heat carrier boilers, biomass boilers, waste heat recovery boilers, and other boiler products; vacuum insulation cryogenic pressure vessels such as LNG tanks, oxygen/nitrogen/argon tanks, and CO2 tanks; pressure vessel products such as denitrification engineering equipment, heat storage and energy storage equipment, and complete chemical equipment; central air conditioning and HVAC equipment such as ground (water) source heat pumps, air source units, water-cooled screw units, and air-cooled modular units. Planned products include large-scale energy centers, LNG transport vehicles, LNG tank containers, and other green energy equipment.
Carbon dioxide tank level gauges are devices used for measuring and monitoring the liquid level of CO2 within the tank. Depending on different working principles and application requirements, common types of CO2 tank level gauges include the following: - Buoy Level Gauge: Uses the buoyancy of a float to indicate the level, measured through a mechanical linkage or an electrical signal sensor connected to the float. - Pressure Level Gauge: Measures level by utilizing the relationship between liquid pressure and level. The level height is calculated by measuring the pressure change on a pressure sensor. - Ultrasonic Level Gauge: Measures level using the propagation time of ultrasound. An ultrasonic transmitter emits waves, and when the beam encounters the liquid surface, part of it is reflected back. The level height is calculated by measuring the reflection time. - Capillary Level Gauge: Utilizes the capillary principle to measure level. By inserting a thin tube into the liquid, the liquid rises within the tube, and the level height is calculated based on the rise. - Level Gauge: Measures level by reflecting waves. The transmitter emits waves, and when the beam hits the liquid surface, part of it is reflected back. The level height is calculated by measuring the reflection time. These level gauges can be selected for application in CO2 tanks based on specific needs and tank design. When selecting and installing level gauges, factors such as liquid properties, working environment, and precision requirements must be considered, and they must be ensured to match the safety operation and monitoring system of the tank.

When cooling CO2 storage tanks, be mindful of the following points and understand the basic steps of the cooling process: **Points to Consider:** **Safety:** Pay attention to safety during the cooling process to ensure the safety of operators and the surrounding environment. Adhere to relevant safety operating procedures and standards, and use appropriate personal protective equipment. **Equipment Selection:** Choose the appropriate cooling equipment and tools, such as cooling media (e.g., liquid nitrogen), coolers, cooling systems, etc. Select the suitable cooling equipment based on the tank's size and requirements. **Temperature Control:** Control the temperature during the cooling process to avoid overcooling or insufficient temperature. Determine the appropriate cooling temperature range based on the tank's design requirements and operating conditions. **Cooling Process Analysis:** **Preparation:** Ensure there are no residual gases or impurities inside the tank to avoid affecting the cooling effect. Check the tank's sealing and the functioning of the safety valves. **Cooling Media Injection:** Inject the cooling media (e.g., liquid nitrogen) into the tank to lower the tank's temperature. Control the injection speed and quantity during the process to avoid overinjection leading to excessive pressure. **Cooling Time:** Determine the cooling time based on the tank's size and requirements. The cooling time typically needs to be long enough to ensure the CO2 inside the tank is sufficiently cooled and liquefied. **Temperature Monitoring:** Regularly monitor the tank's temperature during the cooling process to ensure it remains within the appropriate range. Use temperature sensors or infrared thermometers for monitoring. **Cooling Completion:** The cooling process is complete when the tank's temperature reaches the predetermined cooling requirements. At this point, the CO2 inside the tank should be in a liquid state. **Note:** The specific cooling process and steps may vary depending on different tank designs and usage scenarios. When performing cooling operations, follow relevant safety operating procedures and standards to ensure safety and effectiveness.

Carbon dioxide storage tanks fall under the category of pressure vessels. Pressure vessels are sealed containers capable of withstanding internal pressure, used for storing and transporting gases, liquids, or mixtures. Carbon dioxide storage tanks are pressure vessels specifically designed for storing and transporting carbon dioxide, featuring special designs and structures to ensure safe storage and use. Depending on design and application, these tanks can be vertical or horizontal, with varying capacities and pressure ratings. When using carbon dioxide storage tanks, it is essential to comply with relevant regulations and standards to ensure safe operation and usage.

When conducting routine inspections of CO2 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 inlets and outlets, as well as pipe connections, are functioning normally and for any leaks or loose fittings. Ensure valves operate smoothly and reliably. Pressure Relief Device Inspection: Check that the tank's pressure relief devices (e.g., safety valves) are functioning correctly. Confirm that the set pressure of the relief devices meets the requirements. Level Measurement System Inspection: Verify the accuracy and reliability of the level measurement system. Calibrate the level sensors to ensure accurate level measurements. Pressure and Temperature Inspection: Check that the tank's pressure and temperature sensors are operating properly. Confirm the accuracy of pressure and temperature measurements. Safety Equipment Inspection: Examine the tank's safety equipment, such as safety valves, pressure sensors, and temperature sensors, to ensure they are functioning correctly. Verify that their set parameters meet the requirements. Fire Protection Equipment Inspection: Ensure that fire protection equipment around the tank is intact and check that extinguishers, sprinkler systems, etc., are functioning properly. Liquid and Gas Quality Inspection: Confirm that the quality of the CO2 liquid and gas in the tank meets the required standards, with no impurities or contaminants. Documentation and Reporting: Record the date of inspection, the inspection content, any issues found, and the measures taken. If necessary, submit inspection reports to relevant departments or management personnel. The above are general steps for routine inspections of CO2 storage tanks. Specific operations should be based on the tank's characteristics and requirements. When conducting inspections, follow relevant safety operation procedures and have trained personnel perform the operations.
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