Method for recovering waste heat as motive power

Patent · Tue Jul 19 04:00:00 EDT 1983

OSTI ID:5688699

Takatama, I

A steam-generating system has a construction which omits the vaporizer from a waste-heat boiler of a wasteheat recovery Rankine cycle while retaining the superheater. In this system, the superheated steam emanating from the outlet of the superheater is divided into steam for the superheater system and steam for the steam turbine system. The turbine steam is adiabatically expanded, then condensed and liquefied into water in the condenser, and subsequently converted into high-pressure hot water. This high-pressure hot water is injected into the circulation steam and consequently cooled to produce saturated steam. The saturated steam is returned to the inlet of the superheater and utilized therein to exchange heat with waste gas. The steamgenerating system, therefore, functions as a non-boiling system wherein the superheated steam generated in a mass flow equal to the mass flow of water injected into the circulation steam moves at a constant flow volume and is utilized as the working steam for the steam turbine system. Thus, the steam-generating system is enabled to generate steam of high temperature and pressure.

• Assignee: EDB-84-002901
• Patent Number(s): US 4393657
• OSTI ID: 5688699
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
42 ENGINEERING
425002 -- Engineering-- Power Cycles-- Rankine-- (1980-)
ADIABATIC PROCESSES
BOILERS
ENERGY RECOVERY
ENGINES
HEAT ENGINES
HEAT RECOVERY
MACHINERY
RANKINE CYCLE ENGINES
RECOVERY
STEAM TURBINES
SUPERHEATERS
TURBINES
TURBOMACHINERY
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION