Furnace-heat exchanger preheating system
US5477846A · kind A · utility
Inventor
Key dates
| Filing date | Aug 17, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Aug 17, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D7/1607
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The invention provides in one broad aspect an improved process fluid preheater system for raising the temperature of a process fluid with a hot furnace gas, having a combustion furnace in communication with a shell and tube heat exchanger, wherein the furnace operably produce the hot furnace gas and comprises air inlet means, fossil fuel combustion means and hot furnace gas exit means; and the heat exchanger comprises an exchanger shell, a first end radial tube sheet and a second end radial tube sheet, which define a shell space; a plurality of longitudinal tubes retained by the first and second end tube sheets within the shell and comprising heat exchange means; hot furnace gas inlet means; cooled furnace gas outlet means; process gas inlet means; and heated process fluid outlet means; the improvement comprising the plurality of tubes further comprises the hot furnace gas inlet means and the cooled furnace gas outlet means; the hot furnace gas exit means in communication with the plurality of tubes furnace gas inlet means to operably provide the tubes with the hot furnace gas. The process fluid inlet means comprises a first process fluid inlet adjacent the first tube sheet and in …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.