Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1987-02-11
1988-02-02
Ostrager, Allen M.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
60649, 60 3905, 60 3953, F02C 700
Patent
active
047221909
ABSTRACT:
The present invention relates to a method for efficiently recovering energy from off-gas with high temperatures and high pressures released from the oxidation reactor of aromatic compounds such as xylene, pseudocumene, durene and the like. More particularly, the present invention relates to a method for energy recovery from oxidation reactor off-gas, which comprises subjecting off-gas with high temperature and high pressure from an oxidation reactor to heat exchange with cooling water to cool the off-gas, subjecting the cooled off-gas to direct counter-flow contact with the water heated by said heat exchange to obtain a mixture of off-gas and steam, and cooled water, circulating the cooled water for reuse as said cooling water for said high temperature and high pressure off-gas, and sending the mixture of off-gas and steam to an expander to recover energy therefrom. According to the present invention, the energy recovered from off-gas increases by an amount equivalent to the amount of steam saturating in and accompanying the off-gas.
REFERENCES:
patent: 4499721 (1985-02-01), Cheng
patent: 4537023 (1985-08-01), Nakamura et al.
Nakamura Hiromi
Takahashi Takehiko
Yamamoto Kazuo
Mitsubishi Gas Chemical Company Inc.
Ostrager Allen M.
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