Patent ID: 8210245
Filing Date: 2012-07-03
Classification: F28F

Abstract:
1. A shell-and-tube heat exchanger equipped with a tube plate lining which is resistant to wear for use in thermal cracking equipment comprising: cooling tubes through which the gas to be cooled is circulated, each tube being secured by a tube plate at both ends of the tube and enclosed in a casing through which a coolant material is circulated; the surface of the tube plate on the gas inlet side which is impacted by gas as it enters the shell-and-tube heat exchanger is faced, at least partially, by a protective layer; the protective layer comprising insert sleeves; inserted at least partially into the cooling tube ends; and the insert sleeves being made from a heat resistant metallic material; wherein the insert sleeves are constructed of an austenitic steel material; wherein each of the insert sleeves consists essentially of a sleeve tube and a plate, and the sleeve tube has a length of about 100 to 120 mm; and wherein a plate of one of the insert sleeves is aligned side-to-side and end-to-end at its outer edges with a plate of another insert sleeve.