Topic
Gas heater
About: Gas heater is a research topic. Over the lifetime, 1799 publications have been published within this topic receiving 6169 citations.
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Patent•
20 Aug 1982
TL;DR: In this article, a gas heater has a burner placed near its base and a coil heat exchanger above the burner, and a thermocouple placed near the pilot flame controls a switch to start the electric motor driving the exhaust fan.
Abstract: The gas heater has a burner placed near its base and a coil heat exchanger above the burner. The burner is ignited by the pilot light, and a thermocouple placed near the pilot flame controls a switch to start the electric motor driving the exhaust fan. The exhaust fan is horizontally mounted at the top of the heater combustion chamber and directs flue gas out the flue which preheats inlet air. The switch is situated on the hood which contains the ventilator-extractor arrangement. The latter operates either at a reduced speed or max. speed and stops only after a set time interval. The time interval is a function of the difference of the switching temps. of the thermocouple, the heat output of the pilot light and the specific heat of the thermocouple mount.
2 citations
Patent•
30 Sep 1980
TL;DR: In this paper, a low-calorie gas combustion disposal facility is designed to operate by a mechanism where one portion of combustion exhaust gas is extracted from a chimney, and the gas portion is transported by means of a recycle gas fan, and jetted from recycle gas nozzles mounted to a combustion furnace.
Abstract: PURPOSE:To operate the low calorie gas combustion disposal facilities highly efficient by a mechanism wherein one portion of combustion exhaust gas is extracted from a chimney, and the gas portion is transported by means of a recycle gas fan, and jetted from recycle gas nozzles mounted to a combustion furnace CONSTITUTION:In a low calorie gas combustion furnace consisting of a combustion furnace 1, a boiler 2, an air heater 3, a low calorie gas heater 4, a chimney 5, a combustion auxiliary burner 6, a low calorie gas burner 7, a combustion auxiliary fuel line 8, a low calorie gas line 9, an air fan 10 and a generated vapor line 11, at least one recycle gas nozzle 12 is installed to the combustion furnace 1, and one portion of combustion gas is extracted from the chimney 5 by means of a recycle gas fan 13 and recirculated to the nozzle 12 Thus, an excessive temperature rise of the furnace is prevented, superabundant diluting air becomes unnecessary, and the quantity of exhaust heat escaping from the chimney 5 can minimally be controlled
2 citations
Patent•
28 May 1982
TL;DR: In this article, the authors proposed to remove carbon dioxide and save equipment costs by including grained coal in a circulating gas on the down stream of a gas blower, and blowing this into a reduction furnace after heating in a recirculation line of a coal fluidized bed type direct reduction process.
Abstract: PURPOSE:To remove carbon dioxide and to save equipment costs by including grained coal in a circulating gas on the down stream of a circulating gas blower, and blowing this into a reduction furnace after heating in a recirculation line of a coal fluidized bed type direct reduction process. CONSTITUTION:Iron ore A and slack B are charged into a reducing furnace 1, by which reduced iron C is obtained. The discharged gas from the furnace top is cleaned in a dust remover 3 and a scrubber 4 through a pipeline 2 and is boosted with a circulating gas blower 5. A grained coal blower 6 is provided on the down stream of this blower 5, and the grained powder D in a hopper 10 is introduced into a mixer 7 by a charging mechanism 11, and is mixed with the circulation gas. These are heated in a gas heater 8 and is blown into the furnace 1, whereby they are recirculated. By the blowing of the grained coal D in the circulation gas, carbon monoxide is modified in the gas heater 8 and carbon dioxide is removed, hence a carbon dioxide removing device is abolished or its capacity is decreased and the decrease in the rate of metallization at the reducing is prevented.
2 citations