Heat exchanger for cooling a hot process gas
US6148908A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Jun 22, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D2021/0075
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat exchanger (2) for cooling a hot process gas produced in a process gas generator (1) or a reactor is equipped with several cooling tubes (11), each of which is surrounded by an outer tube (12). Each cooling tube (11) and each outer tube (12) is welded at both ends to one water chamber (13, 14) each for feeding and draining of a cooling medium. The water chamber (13, 14) consists of a solid, strip-shaped piece into which, depending on the number of cooling tubes (11), circular wells (15) are introduced at a certain distance from one another. Each well (15) surrounds a cooling tube (11) and has a diameter equal to or larger than the inside diameter of the outer tube (12). The well (15) has a thin circular floor (16) of slight residual thickness in the area of the tube ends of the cooling tubes (11). A horizontal transfer line (4) carrying the hot process gas is connected to the the process gas generator (1). Each cooling tube (11) is accompanied by a coaxially arranged connecting tube (22) which projects into the cooling tube (11) on the one side and exits from the transfer line (4) on the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.