초록 ▼

An atmospheric pressure coal gasifier is combined with a MHD generator and a vapor generator to provide an entirely coal-fueled power generating system. The combustible low BTU gas formed in the gasifier is passed through a gas cleaner wherein particulate atter, gaseous sulfur compounds, and char ar

An atmospheric pressure coal gasifier is combined with a MHD generator and a vapor generator to provide an entirely coal-fueled power generating system. The combustible low BTU gas formed in the gasifier is passed through a gas cleaner wherein particulate atter, gaseous sulfur compounds, and char are removed to produce a clean combustible low BTU gas. A first portion of the clean combustible low BTU gas and the char are passed to the burner of the MHD generator as a source of fuel. A second portion of the clean combustible low BTU gas is passed to a direct-fired air heater as a source of fuel for preheating the combustion air supplied to the burner of the MHD generator.

대표청구항 ▼

A system for generating power from the combustion of coal and air comprising: (a) a magnetohydrodynamic generator having a burner for producing a high temperature working gas and a generation channel for directly generating electric power from the high temperature working gas, the generation channel

A system for generating power from the combustion of coal and air comprising: (a) a magnetohydrodynamic generator having a burner for producing a high temperature working gas and a generation channel for directly generating electric power from the high temperature working gas, the generation channel connected to the burner so as to receive the high temperature working gas; (b) an atmospheric coal gasifier for producing a combustible low BTU gas, a first portion of which is to be combusted in the burner of said magnetohydrodynamic burner; (c) a source of coal connected to said gasifier; (d) means for supplying preheated combustion air to said coal gasifier; (e) a gas cleaner disposed downstream with respect to gas flow of said coal gasifier for removing particulate matter, gaseous sulfur compounds, and unburned carbon from the combustible low BTU gas produced in said gasifier; (f) a first gas pass connected between said coal gasifier and said gas cleaner thereby providing a gas path for conveying the combustible low BTU gas discharging from said gasifier to said gas cleaner; (g) means interconnected between said gas cleaner and the burner of said magnetohydrodynamic generator for conveying the unburned carbon and particulate matter removed from the combustible low BTU gas in said gas cleaner to the burner of said magnetohydrodynamic generator for combustion therein; (h) means operatively associated with said gas cleaner for selectively splitting the clean combustible low BTU gas discharging therefrom into a first and a second portion; (i) a second gas pass connected between said splitting means and the burner of said magnetohydrodynamic generator thereby providing a gas path for conveying the first portion of the clean combustible low BTU gas discharging from said splitting means to the burner of said magnetohydrodynamic generator to be combusted therein, said second gas pass being operatively associated with said first pass so as to direct the first portion of clean combustible low BTU gas in heat exchange relationship with the gas discharging from said gasifier; (j) a compressor disposed in said second gas pass for increasing the gas pressure of the first portion of the clean combustible low BTU gas discharging from said splitting means; (k) a direct-fired air heater having a burner wherein the second portion of the clean combustible low BTU gas is combusted to preheat high temperature combustion air to be supplied to the burner of said magnetohydrodynamic generator, and a flue for venting the combustion products formed therein to the atmosphere; (l) a third gas pass connected between said splitting means and the burner of said direct-fired air heater thereby providing a gas path for conveying the second portion of said clean combustible low BTU gas discharging from said splitting means to the burner of said direct-fired air heater; and (m) a vapor generator connected to the generation channel of said magnetohydrodynamic generator so as to receive the high temperature working gas passing out of the generation channel, said vapor generator having heat transfer surface whereby heat is transferred from the high temperature working gas to a liquid to generate a vapor as a source of power, and a flue for venting the working gas passing therethrough to the atmosphere.