FIELD: oil and gas processing.
SUBSTANCE: production, preparation for transportation, processing of oil and gas, in particular, the diagnosis of the presence of deposits in recovery heat exchangers. A method for automatically diagnosing the presence of deposits on the walls of a recovery heat exchanger consists of measuring the temperature of the heating coolant with a given time discreteness from the moment the heat exchanger begins operation 
and 
and temperature of the heated medium 
and 
at the inlet and outlet of the heat exchanger, as well as measuring the pressure of the heated medium at the inlet Pin and exit Pout from the heat exchanger, further calculating the temperature difference 
and hydraulic resistance 
, comparison of current temperature pressure values 
with its reference value 
as well as in comparison of current values of hydraulic resistance 
with its reference value 
and monitoring compliance with inequalities 
and 
and where δ and ξ are the values of the permissible deviation of the current temperature pressure from its standard and the permissible deviation of the current hydraulic resistance from its standard, respectively, which are set by the operating regulations of the installation in which the heat exchanger is operated. In case of simultaneous violation of these inequalities, a notification is generated to the operator about the presence of deposits on the walls of the heat exchanger.
EFFECT: increasing the accuracy of diagnostics of the technical condition of a recovery heat exchanger in order to prepare a conclusion about the presence of deposits on the walls of its pipe space, through a joint analysis of the thermal and hydraulic characteristics of the heat exchanger.
1 cl, 1 dwg
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