«Equipment and technologies for oil and gas complex»

Modeling the operation of devices for introducing sprayed corrosion inhibitor into a flare pipeline

UDC: 519.876.5:621.643.2:66.074.5:620.193
DOI: -

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia
² RMG RUS, Moscow, Russia

Keywords: corrosion inhibitor, flare pipeline, inhibition, atomization, gas flow, spray torch, simulation

Annotation:

The authors of the article consider the problem of increasing the efficiency of devices for inhibitor protection against corrosion of flare lines of hydrogen sulfide-containing gas. The results of simulation, using the Solidworks Flow Simulation package, of the operation of the inhibitor feeding units together with the gas, currently used for inhibitor protection against corrosion of flare pipelines of the Orenburg oil and gas condensate field, which made it possible to identify their shortcomings and propose ways of modernization. Based on the performed simulation of four designs of modernized GF-1 injection units, differing from the original one by the size and shape of the outlet gas channel, it is shown that in case of the atomizing gas standard flow rate of 180 nm3/h, the best characteristics are possessed by design structures with a 12 mm diameter opening for atomizing gas with a: cylindrical (modification 2) and with a conical expansion at the outlet (modification 2-a), allowing to create a supersonic gas outflow, providing finely dispersed atomization of the inhibitor solution. For the standard gas flow rate of 360 nm3/h, it is recommended to use modifications 1 and 1-a with a 16 mm diameter outlet opening. Proposals for upgrading the design of the GF-1 injection unit have been sent to LLC "Teckhnologiya", which produces such equipment.

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