Method for eliminating harp type converting kiln lower gas collector heat distortion
A harp-type reformer and gas collector technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as excessive deformation of the lower gas collector, achieve safe operation, eliminate potential safety hazards, and achieve remarkable results. Effect
Active Publication Date: 2011-02-09
SINOPEC NINGBO ENG
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Problems solved by technology
[0006] An elastic limiter is set between the beam at the bottom of the radiant chamber of the reformer and the lower gas collecting pipe, and the elastic reaction force is used to control the problem of excessive upward arching of the lower gas collecting pipe of the harp-type reformer in the hot state, thus effectively solving the problem of the lower gas collecting pipe. A series of problems caused by excessive deformation of the air collecting pipe
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[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0018] Such as figure 1 and figure 2 As shown, the elastic limiter 1 includes a housing 2 and a spring 3 installed in the housing.
[0019] Use the above elastic limiter 1 for a certain 30000Nm 3 / h hydrogen production unit, such as image 3 and Figure 4 As shown, the bottom of the reformer of the hydrogen production unit is provided with five crossbeams 4 according to the design of equipment (industrial furnace) and structure, and there are four lower gas collecting pipes 5 in total; the crossbeams 4 and the lower gas collecting pipes 5 are perpendicular to each other . The specification of the lower gas collecting pipe 5 is Φ630×16, the material is 16MnR, the temperature inside the lower gas collecting pipe is 300°C, the operating pressure is 2.65 MPa (gauge pressure), and the medium in the pipe is hydrogen-rich reformed gas.
[0020...
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The invention relates to a method for removing the thermal distortion of a lower gas collecting tube of a harp arrangement converting kiln, which is characterized in that an elastic limiting part is arranged between a beam at the bottom and a lower gas collecting tube of a radiation chamber of the converting kiln, the elastic direction of the elastic locating part is opposite to the distortion direction of the lower gas collecting tube; moreover, the maximum extratensive elastic force generated by the elastic locating part corresponds to the distortion stress of the lower gas collecting tube at the position where the limiting part is positioned. The arrangement of the elastic locating part can solve the problem that the lower gas collecting tube of the harp arrangement converting kiln haunches up excessively and upwardly in the thermal state, effectively solves the series of problems caused by the distortion of the lower gas collecting tube, avoids the problems that the lining of the lower gas collecting tube has crackles or falls down, and the local part of the external wall of the gas collecting tube has ultrahigh temperature and the like, has safe and stable operation of the whole converting kiln and has remarkable effects.
Description
technical field [0001] The invention relates to a hydrocarbon steam reformer in a petrochemical plant, in particular to a method for eliminating thermal deformation of a lower gas collecting pipe of a harp reformer. Background technique [0002] The existing hydrocarbon steam reformer is one of the most important equipment in petrochemical plants such as synthetic ammonia, methanol, and hydrogen production, and the reformer piping system is the key part of the entire reformer, including the upper distribution pipe, Reformer tubes, lower header and lower header. There are usually two ways to connect the reformer tube and the lower gas collecting pipe: the harp type, that is, the direct plug-in type, and the pigtail pipe type with the bottom. These two methods have their own advantages and disadvantages, and many sets of devices are used at home and abroad. Among them, the harp type has the advantages of simple structure, small investment, and low energy consumption, and is ...
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IPC IPC(8): C01B3/34
Inventor 张宝成王永锋邹杰米杰
Owner SINOPEC NINGBO ENG