Shandong Zhongjie Special Equipment (formerly Heze Boiler Factory Co., Ltd.) was established in 2001, located at No. 2218 Jinnan Road, Economic 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. The main workshop spans 83,000 square meters. Currently, there are 710 employees, including 247 engineering and technical staff 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 Department 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.
Carbon dioxide has wide applications in the field of food freezing. Here are some common uses of carbon dioxide in food freezing: 1. Frozen Food Processing: Carbon dioxide is often used in the processing of frozen foods. By exposing food to liquid carbon dioxide, temperatures can be rapidly reduced for quick freezing, which effectively preserves the quality, texture, and nutritional content of the food. 2. Frozen Storage: Carbon dioxide is also utilized for the frozen storage of food. During this process, food is placed in a low-temperature environment, and the freezing effect of carbon dioxide lowers the temperature below the freezing point, extending the shelf life of the food. 3. Frozen Transportation: Carbon dioxide plays a crucial role in frozen food transportation. By employing carbon dioxide freezing technology during transportation, the low-temperature state of the food is maintained, preventing quality loss. 4. Frozen Display: In the food retail industry, carbon dioxide is used in frozen display cabinets. Injecting carbon dioxide gas into the cabinets keeps the food at a low temperature, ensuring freshness and quality while on display. Compared to traditional freezing techniques, carbon dioxide freezing offers advantages such as faster freezing, better freezing quality, and minimal impact on food quality. However, safety operation is crucial when using carbon dioxide freezing technology to avoid leaks and potential harm to humans. Therefore, it is necessary to follow relevant safety operation procedures and guidelines when using carbon dioxide for food freezing.

The reasons for not leaving a CO2 cylinder idle for extended periods are mainly as follows: 1. Safety Risks: CO2 is a high-pressure gas and must maintain a certain pressure within the cylinder to remain in liquid form. Releasing CO2 from the cylinder into the atmosphere over a long period can cause a drop in pressure, potentially leading to structural failure or explosions. 2. Resource Waste: CO2 is a valuable resource with widespread applications in industry and other fields. Idle CO2 cylinders for extended periods result in resource waste, which contradicts sustainable development principles. 3. Environmental Impact: CO2 is a greenhouse gas, and leaving CO2 cylinders idle for long durations increases atmospheric CO2 concentrations, exacerbating climate change and environmental issues. Therefore, to ensure safety, conserve resources, and protect the environment, CO2 cylinders should be used and managed in accordance with specified procedures and requirements, avoiding long-term idleness. When CO2 in the cylinder is no longer needed, appropriate disposal methods, such as recycling, reuse, or safe disposal, should be employed.

When conducting routine inspections of CO2 storage tanks, follow these steps: 外观检查：Inspect the tank for any obvious damage, corrosion, or oil leakage signs. Pay attention to any abnormalities in the tank shell, valves, and pipeline connections. Valve and Pipeline Inspection: Check the tank's inlets and outlets for proper valve and pipeline connections, and for any leakage or loosening. Ensure the valves operate smoothly and reliably. Pressure Relief Device Inspection: Verify that the tank's pressure relief devices (such as safety valves) are functioning correctly. Confirm that the set pressure of the pressure 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 fire protection equipment around the tank is intact and check that fire extinguishers, sprinkler systems, etc., are functioning correctly. Liquid and Gas Quality Inspection: Ensure that the CO2 liquid and gas in the tank meet quality requirements and are free of impurities or contaminants. Documentation and Reporting: Record the date of the inspection, the items inspected, any issues found, and the measures taken. If necessary, submit a report to the relevant departments or management personnel. The above steps are general guidelines for routine CO2 storage tank inspections. 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.

In everyday use, CO2 storage tanks require protection and maintenance to ensure proper operation and safety. Here are some common protection and maintenance methods: - **Visual Inspection**: Regularly check the tank's exterior for corrosion, wear, and cracks. Take immediate corrective action if any abnormalities are found. - **Sealability Check**: Periodically inspect the tank's sealing performance, particularly at valves, pipe connections, and the tank itself. Ensure there are no leaks, and repair any found promptly. - **Temperature Control**: Maintain a suitable environmental temperature around the tank and implement appropriate insulation measures to ensure the tank's internal low-temperature state. - **Pressure Relief Device Inspection**: Regularly check the tank's pressure relief devices, such as safety valves, to ensure they are functioning correctly. Verify that the set pressure of the relief devices meets requirements and perform regular maintenance and replacements. - **Level Monitoring**: Regularly monitor the tank's liquid level to ensure accurate measurement. Take immediate action to investigate and resolve any abnormal levels. - **Regular Cleaning**: Clean the tank's interior regularly to remove accumulated impurities and dirt. Exercise caution during cleaning to avoid flammable and corrosive substances. - **Regular Testing**: Conduct regular pressure tests and leak checks on the tank to ensure its safety performance meets requirements. The frequency and methods of testing should comply with relevant specifications and standards. - **Storage Capacity Control**: Control the storage capacity of the tank to prevent exceeding the rated capacity. Exceeding the rated capacity can lead to excessive tank pressure and increased safety risks. It should be noted that specific protection and maintenance methods may vary depending on the type of tank and its application.
Shandong Zhongjie Special Equipment, welcome customers to visit our factory for business discussions.