Method for cleaning compact core-soluble slat
A technology of core and dissolved salt, which is applied in the field of cleaning soluble salt of dense core, can solve the problems of low experimental efficiency, complex equipment, high equipment requirements, etc., and achieve the effect of high cleaning efficiency, convenient operation, safe and simple operation
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[0025] The present invention will be further explained by the accompanying drawings.
[0026] A method for cleaning soluble salt in tight cores includes the following steps in sequence (see figure 1 ):
[0027] ①Prepare experimental cores, anhydrous methanol (or other solvents that can dissolve salt) and silver nitrate solution;
[0028] ②Put the dried core into high-pressure vessel 1, heat it to 60℃, open valve 2, close valve 4 and valve 6, open vacuum pump 3 to vacuum, until the vacuum degree reaches 0.098MPa or more, continue vacuuming for 2 to 4 hours Then close valve 2 and close vacuum pump 3;
[0029] ③Using a syringe to fill the pipeline connecting valve 6 with the outside world with anhydrous methanol, and connect this pipeline to a container with a sufficient amount of anhydrous methanol, open valve 6, and make the high-pressure container 1 full of methanol under vacuum. Water methanol, close valve 6;
[0030] ④ Use manual pressure pump 5 to suck a certain amount of anhydrou...
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