Device and method for heating wind used in denitrification pyrolysis furnace by means of regenerative heat
A technology of regenerative heating and pyrolysis furnace, which is applied in separation methods, air heaters, steam engine devices, etc.
Pending Publication Date: 2020-01-14
SHANGHAI WAIGAOQIAO NO 3 POWER GENERATION
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Problems solved by technology
[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to reduce the energy consumption in the process of heating the denitrification pyrolysis furnace with wind, and then reduce the high operating cost generated by the power consumption of the electric heating device
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[0033] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.
[0034] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of parts is appropriately exaggerated in some places in the drawings.
[0035] Such as figure 1 As shown, the air structure layout of the existing denitrification pyrolysis furnace in a conventional pow...
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The invention discloses a device for heating wind used in a denitrification pyrolysis furnace by means of regenerative heat, and relates to the field of a power plant. The device comprises a deaerator, a heat exchanger No.5, a water diversion pipeline, a booster pump, a steam transportation pipeline, a steam heater A9, a high-grade steam pipeline, a steam heater A6, a low-grade steam pipeline, a steam turbine, a flow regulating valve, the denitrification pyrolysis furnace, a by-pass damper and electric heating device. The invention discloses a method for heating wind used in the denitrification pyrolysis furnace by means of regenerative heat at the same time. The method comprises the following steps of 1, introducing primary wind; 2, determining deaerated feedwater flow; 3, introducing deaerated feedwater for heat exchange; 4, outputting deaerated feedwater and primary wind; 5, determining low-grade steam flow; 6, introducing low-grade steam for heat exchange; 7, outputting primary wind; 8, determining high-grade steam flow; 9, introducing high-grade steam for heat exchange; and 10, outputting primary wind to the denitrification pyrolysis furnace. The device and the method only utilize regenerative heat to heat the wind used in the denitrification pyrolysis furnace, so energy consumption and cost are reduced.
Description
technical field [0001] The invention relates to the field of power plants, in particular to a device and method for heating air used in a denitrification pyrolysis furnace by using regenerative heat. Background technique [0002] The heating technology of the SCR denitrification device in the power plant is divided into two categories according to the heat transfer method: indirect heat transfer and direct heat transfer. The main representative technologies of indirect heat exchange are: rotary type, tube type, heat pipe type, steam heater, etc. The main representative technologies of direct heat exchange are: hot secondary air mixed heating, gas direct heating, hot air mixed heating, etc. [0003] At present, the urea used in the SCR denitrification device of the power plant adopts the method of pyrolysis. The hot air comes from the hot air side behind the primary air preheater, and enters the pyrolysis furnace after being heated by a steam heater and an electric heating d...
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IPC IPC(8): F24H3/06F22D1/50F01K17/06B01D53/90B01D53/56
CPCF24H3/06F22D1/50F01K17/06B01D53/90B01D53/8625
Inventor 施敏俞兴超徐科陆晓峰
Owner SHANGHAI WAIGAOQIAO NO 3 POWER GENERATION