发明名称 |
TUBULAR REACTION SYSTEM FOR A TUBULAR CRACKING FURNACE |
摘要 |
A reaction tube system of a steam reformer, more generally referred to as tubular cracking furnace, for the indirect heating of cracking feedstock, such as the catalytic cracking of hydrocarbons, includes a plurality of reaction tubes and headers, the reaction tubes penetrating through the bottom of the steam reformer and being extended to the associated header by low-alloy tube sections attached to the tubes by circumferential welds. The reaction tubes are surrounded in the area of the weld(s) by a coaxial protective tube having one open end and defining a free annular space around the reaction tube. The protective tube prevents deterioration by corrosion of the weld(s) joining the tube sections of high-alloy steel with low-alloy extension sections with unalloyed steel extension section. |
申请公布号 |
EP0171583(A3) |
申请公布日期 |
1986.12.10 |
申请号 |
EP19850108315 |
申请日期 |
1985.07.05 |
申请人 |
UHDE GMBH |
发明人 |
HERBORT, HANS-JOACHIM, DIPL.-ING.;SEVERIN, MANFRED, DIPL.-ING. |
分类号 |
B01J19/00;C10G9/20;C10G11/00 |
主分类号 |
B01J19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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