Gas heater

About: Gas heater is a research topic. Over the lifetime, 1799 publications have been published within this topic receiving 6169 citations.

Regeneration of absorbing solution

Abstract: PURPOSE:To regenerate an absorbing soln. for polar gas without lowering the output of a plant. CONSTITUTION:The exhaust gas 3 of a boiler 10 passes through a denitration device 11, an air preheater 12, a gas heater 17 and a desulfurizer 13 to be lowered in temp. and subsequently enters an absorbing tower 18 and carbon dioxide in the exhaust gas is absorbed by a carbon dioxide absorbing soln. 6. The absorbing soln. having carbon dioxide absorbed thereinto is sent to a regeneration tower 19 through a absorbing soln. tank 20 while heated by an absorbing soln. heat exchanger 22 to discharge carbon dioxide. The absorbing soln. in the regeneration tower 19 is cooled by the absorbing soln. heat exchanger 22 and further cooled to temp. necessary for absorbing carbon dioxide by an absorbing soln. cooler 24 to be supplied to an absorbing tower 18. The absorbing soln. stored in the regeneration tower 19 is further heated in an absorbing soln. regenerating heat exchanger 25 by the exhaust gas of the boiler 10.

Gas-gas heater

Abstract: PROBLEM TO BE SOLVED: To enhance a utilizing efficiency of an energy by supplying makeup water to a heat exchanger to heat the water, when an exhausting temperature of an exhaust gas after desulfurizing treatment into the atmosphere exceeds an upper limit temperature in a gas-gas heater of a boiler having an exhaust smoke desulfurizing apparatus in a power plant or the like. SOLUTION: The gas-gas heater utilizes a heat of an untreated gas 39 of a high temperature generated from a boiler 31 for raising a temperature of a desulfurized treated gas 40. The heater comprises a heat recovery unit 32 provided in a route for feeding the gas 39 into a desulfurizing apparatus 33, and a reheater 34 provided at the route for feeding the gas 40 after desulfurizing to a stack 35. The unit 32 and the reheater 34 are connected via a heating medium heating/heat reducing unit 44 for raising/lowering a temperature of the medium 37. In this case, when the exhausting temperature of the gas 40 into the atmosphere exceeds the upper limit temperature, a flow regulating valve 3 is closed by a temperature regulating meter 46, and a control valve 43 is opened, and the water in the tank 48 is supplied to the unit 44 to heat the water.

Reducing organic and inorganic pollutants in exhaust gases and waste air comprises feeding exhaust gas stream onto adsorber/catalyst, separating exhaust gas stream from adsorber and connecting to circulating system

Abstract: Reducing organic and inorganic pollutants in exhaust gases and waste air comprises feeding the exhaust gas stream onto an adsorber/catalyst monitored for its load, separating the exhaust gas stream from the adsorber when the charge state is below the maximum charge of the exhaust gas stream, and connecting to a circulating system. The circulating system consists of the adsorber/catalyst, a plasma generator, optionally a gas heater, and a measuring system for measuring the pollutant content of the circulating gas. After the gas has passed through the circulating system several times, the system is opened to indicate the absence of pollutants, the purified exhaust gas ejected and a new cycle of charging, purifying and ejection connected.

A review of heat recovery possibility in flue gases discharge system of gas radiant heaters

Abstract: Heating of large-cubage buildings accounts for significant share of energy consumption. The radiant heating system using gas heaters is a common solution for large-cubage halls and is considered to be energy efficient. There is a possibility of additional heat energy recovery from the flue gases of gas radiant heaters because new solutions were introduced to the market. Furthermore heat recovery consists the most promising solution and develop during the recent years rapidly. On the other hand, few works have been dedicated to heat recovery from exhaust gas but none of them consider exhaust gas from radiant heaters. Exhaust gas temperature depends on the type and efficiency of the gas heater. The selection of both the type of radiant heaters and the heat recovery system requires many factors to be taken into account. This study consider possibilities for application of different heat exchangers in exhaust gases system of gas radiant heaters. The authors propose to classify exhaust gas heat recovery systems in dependence on intermediary medium: water/air, gas heaters type: ceramic/tube and number (single/group) and their mounting location.