Heat accumulating type direct-fired boiler using biomass fuel
A biomass fuel, regenerative technology, used in fuel supply, combustion using liquid fuels and gaseous fuels, combustion methods, etc., can solve problems such as inefficient operation and large equipment, and achieve extended service life and reduced emissions. , the effect of improving heat exchange efficiency
Inactive Publication Date: 2012-12-12
朱海生
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Problems solved by technology
The boiler tube bundles, economizers, air preheaters and other equipment installed in traditional boilers are large and inefficient convective heat transfer surfaces, mainly to reduce the exhaust gas temperature and recover the waste heat of the flue gas to the greatest extent.
Method used
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[0021] see figure 1 , The regenerative biomass fuel direct-fired boiler includes: the boiler body 1, the regenerative combustion equipment 2, the smoke and dust removal equipment 3, the biomass fuel feeding equipment 4, the fuel gas equipment 5, the combustion air supply equipment 6, and the Ash equipment 7, flue gas discharge equipment 8, automatic control and safety protection equipment 9.
[0022] see figure 2 , The boiler body 1 is composed of a grate 101 , a grate driving device 102 , a furnace 103 , a water wall 104 and a radiation heat exchanger 105 . The grate 101 adopts a chain grate or a reciprocating grate; the furnace 103 is composed of a steel frame, a furnace wall, a ceiling and a furnace door made of refractory and heat-insulating materials. The water-cooled wall 104 adopts a membrane-type water-cooled wall or a fin-type water-cooled wall; the radiation heat exchanger 105 adopts a screen-type heat exchanger.
[0023] see image 3 , regenerative combustion e...
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The invention discloses a heat accumulating type direct-fired boiler using a biomass fuel. The heat accumulating type direct-fired boiler comprises a boiler body, a heat accumulating type combustor, a smoke discharge and dust removal device, a fuel charge device, an ash removal device and an automatic control and safety protection device. The heat accumulating type direct-fired boiler using the biomass fuel disclosed by the invention applies a new heat accumulating type high temperature air combustion technology; a shuttle valve switches so that two heat accumulation chambers are operated alternately in heat accumulation and heat release states; the afterheat of smoke is efficiently recovered, and combustion air is preheated to more than 1,000 DEG C; the biomass fuel is fully combusted in the high temperature low oxygen environment, and due to unique combustion and smoke discharge modes, a high temperature area is formed in the combustion space of the hearth, so radiation heat transfer in the hearth is intensive without needing inefficient energy-consuming equipment such as coal economizers and air preheaters; therefore, the heat efficiency of the whole boiler is greatly improved; and according to requirements, the boiler can be designed as a direct-fired boiler that uses solid, liquid and gas fuels, and has the same characteristics, such as efficient combustion heat transfer, obvious energy conservation and environmental friendliness.
Description
technical field [0001] The invention relates to a regenerative biomass fuel direct-fired boiler, which belongs to the boiler industry and the technical field of new energy boilers. Background technique [0002] As we all know, "boiler" is a kind of heat generating equipment or heat exchange equipment that uses fuel combustion or other heat sources to generate steam or hot water. It is customary in the industry to refer to heat generating equipment with combustion devices as boilers, without combustion devices The heat generating equipment is called waste heat (waste heat) boiler. As an important power equipment, boilers have been widely used in various fields of the national economy such as power stations, petrochemical, chemical, light industry, environmental protection, and domestic heating, and play an important role in heat energy conversion. [0003] Boilers: According to different fuel types, they can be divided into solid fuel boilers (such as coal-fired boilers, oil...
Claims
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IPC IPC(8): F23C1/08F23L15/00F23K5/00F23N5/00
CPCY02E20/34
Inventor 朱海生
Owner 朱海生