一种急冷锅炉

Quenching boiler

Abstract

The utility model relates to a quenching boiler which is characterized in that the utility mode is mainly composed of an inlet end cover (1), a lower connecting flange (2), an inlet tube plate (3), a lower connecting piece (4), a barrel body (5), an upper connecting piece (6), an outlet tube plate (7), an upper connecting flange (8), an outlet end cover (9), and a heat exchange tube (10) from bottom to top in sequence. The inlet tube plate (3) and the outlet tube plate (7) are both thin tube plates. The lower connecting piece (4) and the upper connecting piece (6) are both reducer tubes. The connecting pieces can perfectly absorb thermal stress through a half expansion joint shape. The welded joints of shell side spaces are all butt welding joints, the welding between the heat exchange tube and the tube plate is formed to realize butt welding through deep hole welding. The reverse side of the inlet tube plate adopts a heat resistant alloy overlay welding layer, and has perfect thermal protection function to the inlet tube plate. The quenching boiler of the utility model has the advantages that the structure is simple, simultaneously, the material consumption is small, the overall fabrication cost is low, and the quenching boiler not only can be used for the building of a new ethylene cracking device, but also can be suitable for the modification of an ethylene cracking device in service.
本实用新型涉及一种急冷锅炉,其特征在于由下至上依次主要由入口封头(1)、下连接法兰(2)、入口管板(3)、下连接件(4)、筒体(5)、上连接件(6)、出口管板(7)、上连接法兰(8)、出口封头(9)、换热管(10)构成。入口管板(3)与出口管板(7)均为薄管板。下连接件(4)与上连接件(6)均为变径管。连接件通过半个膨胀节形状可以很好地吸收热应力。壳程空间的焊接接头均为对接焊接接头,换热管与管板之间的焊接通过深孔焊形成实现对接焊接。入口管板背面采用耐热合金堆焊层,对入口管板起到很好的热保护作用。本实用新型急冷锅炉结构简单,同时材料消耗量少,整体造价低,既可用于新建乙烯裂解装置,又可适用于在役乙烯裂解装置的改造。

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    CN-101760226-BMarch 27, 2013中国石油化工股份有限公司, 天华化工机械及自动化研究设计院有限公司Quenching boiler with fluid distributing element
    CN-102260520-ANovember 30, 2011华东理工大学一种新型急冷废热锅炉下管箱及其内衬刚玉的设计方法
    CN-102925196-AFebruary 13, 2013沈阳石蜡化工有限公司Anti-coking device for high-temperature pyrolysis gas inlet of oil gas quench cooler
    CN-102925196-BAugust 13, 2014沈阳石蜡化工有限公司Anti-coking device for high-temperature pyrolysis gas inlet of oil gas quench cooler