METHOD OF PARAFFIN DEPOSITS REMOVAL FROM HEAT EXCHANGERS AT OIL HEATING UNIT

摘要

FIELD: oil and gas industry.SUBSTANCE: invention is related to oil production and may be used for paraffin deposits removal from heat exchangers at oil heating unit. Method of paraffin deposits removal from heat exchangers consist in removal of heated and liquefied paraffin by hot oil flow, at that the line of reverse oil delivery is connected to heat exchangers and at pressure drop between oil pressure at the input to heat exchangers and pressure at their output from 0.9 up to 0.95 of the maximum allowable value for these heat exchangers oil delivery is switched from their input to the output thus forming the reverse oil flow mode, which is maintained till the preset pressure drop is attained at each heat exchanger at the oil heating unit, thereupon oil delivery is switched to the input of heat exchangers.EFFECT: design simplification of the oil heating unit both in operation mode and cleaning mode with permanent heated oil delivery to consumers.1 dwg