The pipelines in the air separation tower work at low temperature, but their installation is carried out at normal temperature. Therefore, if the prestress is too large or the cold compensation is not good, it is easy to cause pipe cracking, valve jamming and other phenomena. In order to avoid this problem, the following points should be done during installation: when piping, generally, large pipes should be done first and then small ones, difficult pipes should be done first and then easy ones, small pipes should give way to large ones, and heat pipes should give way to cold pipes; Do not force the installation when the dislocation of the welding junction between the valve and the pipe is too large; For the installation welded junction at the flange connecting the valve and vessel, tighten the flange bolt without gasket before welding, and add gasket after welding; Avoid using small tubes and valve stems as scaffolds; Change the valve hanger into a rigid support.
The remote monitoring system for hazardous chemical production equipment independently developed by Kaifeng DEAR Air Separation Industry Co., Ltd. has been verified to be widely used in the production of intelligent air separation system based on Internet remote control and the manufacturing equipment for energy saving and environmental protection industrial gas. The research results include DCS system, data acquisition system, customer remote monitoring system and manufacturer remote monitoring system. Multiple customer monitoring terminals work at the same time, which is conducive to effective management and normal operation of users, and can find and handle problems in a timely manner. The monitoring terminals of multiple manufacturers can help manufacturers obtain real-time information and historical data of equipment operation, and provide users with timely and accurate technical support.
