Method and apparatus for efficient recovery of heat from hot gases that tend to foul heat exchanger tubes
In recovering heat from a high temperature cracked hydrocarbon gas, a method is described of injecting a liquid wash into the tubes of a vertically oriented multitube shell-and-tube transfer line heat exchanger (TLE). The TLE comprises more than one heat exchange tube and a top tube sheet to prevent deposition of condensable components and coke which comprises introducing the liquid wash into a plenum chamber adjoining and on top of the shell side of the exchanger and defined by the top tube sheet of the exchanger, a horizontal distributor plate thereabove, an outer wall section of the shell of the exchanger therebetween and the wall portion of the tubes between the top tube sheet and the distributor plate. The distributor plate causes the liquid wash to overflow the plenum chamber through holes in the distributor plate and flow downwardly within the tubes with the cracked gas.
- Assignee:
- Exxon Research and Engineering Co., Florham Park, NJ
- Patent Number(s):
- US 4614229
- OSTI ID:
- 5105376
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
421000* -- Engineering-- Combustion Systems
CHEMICAL REACTIONS
COKE
CRACKING
DECOMPOSITION
EFFICIENCY
ENERGY RECOVERY
ENERGY SOURCES
FLUE GAS
FLUID FLOW
FLUIDS
FOSSIL FUELS
FOULING
FUEL GAS
FUELS
GAS FUELS
GASEOUS WASTES
GASES
HEAT EXCHANGERS
HEAT RECOVERY
HYDROCARBONS
LIQUID FLOW
NATURAL GAS
ORGANIC COMPOUNDS
PIPES
PYROLYSIS
RECOVERY
THERMOCHEMICAL PROCESSES
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION
WASTES