Organic carrier and steam combined cycle boiler for efficient low-nitrogen powder combustion

Abstract

The invention relates to a high-efficiency low-nitrogen powder combustion organic carrier-steam combined cycle boiler, which is characterized in that it includes a powder burner arranged in sequence on the front and rear furnace walls, an organic carrier radiation heating surface, an SNCR denitrification device, and a steam boiler. The convective heat exchange tube bundle, SCR denitrification device, economizer, air preheater, and the water replenishment pipe are connected between the economizer and the steam upper drum at the upper part of the steam convective heat exchange tube bundle. The present invention adopts a furnace combustion chamber for powder combustion, which can realize the purpose of simultaneously producing high-temperature organic carrier and steam, and satisfies the needs of users who need high-temperature organic carrier and steam at the same time. And it can realize ultra-low nitrogen oxide emission of flue gas, saving investment and simple management.

Description

technical field [0001] The invention relates to an industrial boiler, in particular to a high-efficiency low-nitrogen powder combustion organic carrier-steam combined cycle boiler. Background technique [0002] At present, organic carrier boilers are widely used in various industries because of their low pressure and high temperature characteristics. Mechanical heat carrier boilers, also known as heat conduction oil boilers, use organic heat carriers or heat medium oils as intermediate heat transfer media in industrial heat exchange processes for more than 50 years. The hot oil circulating oil pump is used to force the medium to circulate in liquid phase, and the heat energy is delivered to the heat-consuming equipment and then returned to the heating furnace for reheating. It can obtain high working temperature under low pressure, and can perform high-precision control of the medium operation. The heat utilization rate of the system is high, the operation and maintenance a...

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Problems solved by technology

[0005] In order to overcome the problems that the existing organic carrier boilers and steam boilers need to be constructed separately and the layer combustion method is inefficient and does not meet the environmental protection standards, the power consumption is large, the desulfurization and nitrogen oxide emissions are still not ideal, and the combustion efficiency is not high. The present invention Provide a high-efficiency low-nitrogen powder combustion organic carrier-steam combined cycle boiler. The boiler uses powder combustion to simultaneously produce high-temperature and low-pressure organic carrier and steam

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