FIELD: process engineering.
SUBSTANCE: set of inventions relates to the steam system to be used in production of olefins. The steam system comprises low-pressure feed water degasifier (16). Its working pressure first level (P1) is higher than barometric pressure P1>1 bar. The working pressure of the system low-pressure steam line (22) features the second pressure level (P2). Note here that the second pressure level is higher than the first one P2>P1. The steam system comprises also high-pressure steam line (38) with working pressure featuring the third pressure level P3. Note here that the third pressure level is higher than the second one P3>P2. Claimed system comprises between the high pressure steam line (38) and the degasifier (16) at least one steam turbine (40) to expand the steam of the high pressure steam line (38) from (P3) to (P1).
EFFECT: higher power use efficiency subject to pressure differences, lower power consumption.
11 cl, 2 dwg
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