Matters after cleaning of liquefied petroleum gas tank

After pickling, use NaOH, Na2CO3, Na3PO4, and demineralized water to prepare in proportion, and use dynamic circulation to carry out alkali cleaning on the heat exchanger to achieve acid-base neutralization, so that the heat exchanger plates will not corrode. After the alkaline cleaning, use clean demineralized water to rinse the heat exchanger repeatedly for 0.5 hours to clean the residue in the heat exchanger. During the cleaning process, the time of each step should be strictly recorded so that the staff can check the cleaning effect.After the cleaning is completed, the heat exchanger must be subjected to a pressure test before it can be used. There are three kinds of resistance heating, induction heating and infrared heating. The infrared heating method has simple equipment, high thermal efficiency, and is easy to use, and is suitable for heating containers and gas storage tank cars.