FIELD: oil and gas industry.
SUBSTANCE: invention relates to the furnace for ethylene cracking having multipass radiant coil and at least one radiant section, that contains bottom installed burners and/or side wall installed burners, and at least one multipass radiant coil installed in longitudinal direction of the radiant section. At that the multipass radiant coil is the coil selected from the group of radiant coils having from for to ten passes, and in the multipass radiant coil at least one tube is located in the space near the tube con connected in series with this at least one tube.
EFFECT: invention ensures additional temperature decreasing of the radiant coil surface, and hence increases the service life of the radiant coil and cracking furnace duty cycle.
16 cl, 36 dwg
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RU2211854C2 |
