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Design of piping in cold boxes for large air separation units

Design of piping in cold boxes for large air separation units
The design of the piping in the cold box of the large air separation units is complex and complicated, and each pipeline has its own process requirements. The design needs to meet the stability of the gas and liquid during normal operation and to make a comprehensive assessment of the manufacturing, installation, operation, stopping and maintenance aspects.
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Mar 24, 2025
DEAR Air Separation Successfully Signs 25,000 Nm³/h Intelligent Air Separation BOT Project with Huaxi Steel
Dec 11, 2020
On December 7, 2020, Kaifeng DEAR air separation Industrial Co., Ltd. (hereinafter referred to as: DEAR air separation) and Shaangu Group once again j
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1500/100 Y-type solution for small air separation plant in new material industry
The new material industry system of our country has been initially formed and the development situation is good. With the introduction of national strategic planning such as "The development plan of national strategic emerging industries in the 13th Five-Year Plan" and "The development plan of new material industry in the 13th Five-Year PlanThe new material industry system of DEAR air separation has been initially formed and the development situation is good. With the introduction of national strategic planning such as "The development plan of national strategic emerging industries in the 13th Five-Years Plan" and "The development plan of new material industry in the 13th Five-Years Plan", it has created a good policy environment for the development of new material industry. Recently, DEAR air separation cooperated with clients on the 1500/100 Y-type project of small air separation plant. The overall design of the project is reasonable, and the one-time drive is successful, and all the
4500/4500-type solution for small and medium-sized air separation plant in nonferrous industry
According to the influence and reform of the general environment of the non-ferrous industry, the problems faced by this industry are becoming more and more serious, and the control of production capacity is particularly important. Recently, the 4500/4500 type small air separation equipment project signed with customers by DEAR Air Separation, through the trial run stage, all the technical indicators have reached or exceeded the design standard, and have been continuously sending nitrogen for several days, which has been well received by users.
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1.The purpose of purging is to purge the welding slag and dirt left in the pipeline and container. 2.The principle of purging is doing the outside columnfirstly,and the inside column after. The purging should be carried out one pipeline by one. 3.When purging the system, the filter core on the equipment inlet pipe should be removed. 4.When purging the pipe outside the cold box, all the valves connected with the cold box should be disconnected to prevent dirt from entering the valve and column. 5.The purging of each system should be repeated for many times. The purging time shall not be less than 4 hours. 6.To check whether the purging is complete, wet white filter paper or white cloth shouldbe used to placeat the outlet of purging. After 5 minutes, it is qualified if it is clean and free of obvious mechanical impurities.
May 20, 2026
Why only cryogenic air separation equipment can be selected for large industrial gas?
Mar 19, 2026
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