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Flue gas passage system capable of achieving adjacent furnace low-load denitration and mutual standby of flue gas channels

A flue gas passage, low-load technology, applied in combustion equipment, valve configuration, exhaust gas devices, etc., can solve the problems of unreachable denitration temperature and high transformation cost, achieve simple structure, low cost, and overcome the effect of standby equipment.

Pending Publication Date: 2020-05-12
NORTHWEST BRANCH OF CHINA DATANG CORP SCI & TECH RES INST
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Problems solved by technology

The biggest problem with the reduction of thermal power units from 50% to 30% is that the denitrification temperature cannot reach the temperature required by the catalyst, so it is necessary to increase the temperature of the denitrification inlet through relevant transformation, but the transformation cost is relatively high

Method used

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  • Flue gas passage system capable of achieving adjacent furnace low-load denitration and mutual standby of flue gas channels
  • Flue gas passage system capable of achieving adjacent furnace low-load denitration and mutual standby of flue gas channels

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Embodiment Construction

[0017] The present invention is a flue gas passage system that satisfies the low-load denitrification of adjacent furnaces and that the flue is a backup for each other, including two adjacent single-auxiliary boilers, namely the first single-auxiliary boiler 1 and the second single-auxiliary boiler 2, The first single-auxiliary boiler 1 is connected with a first flue gas passage 3, and the second single auxiliary boiler 2 is connected with a second flue gas passage 4, and the first flue gas passage 3 communicates with the flue gas passage 5. The second flue gas passage 4 is connected, and the flue gas flow regulating device is arranged on the flue gas passage 5 .

[0018] One end of the smoke passage 5 is connected to the tail of the first smoke passage 3 , and the other end of the smoke passage 5 is connected to the tail of the second smoke passage 4 .

[0019] The flue gas flow regulating device includes opening or closing the flue gas electric door 6 between the first flue ...

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Abstract

The invention relates to the technical field of low-load denitration of single auxiliary machine boilers and improvement of unit safety, in particular to a flue gas passage system capable of achievingadjacent furnace low-load denitration and mutual standby of flue gas channels. The flue gas passage system comprises two adjacent single auxiliary machine boilers including a first single auxiliary machine boiler and a second single auxiliary machine boiler; the first flue gas channel and the second flue gas channel are connected through a flue gas passage, so that when the load of one single auxiliary machine boiler is low and the denitration requirement cannot be met, high-temperature flue gas is introduced from the other single auxiliary machine boiler through the flue gas passage to increase the denitration temperature of the single auxiliary machine boiler; and meanwhile, follow-up equipment of the first flue gas channel and the second flue gas channel can serve as standby equipmentfor each other through the flue gas passage, the defect that the single auxiliary machine boiler lacks standby equipment is overcome, and the safety of units is greatly improved.

Description

technical field [0001] The invention relates to the technical field of low-load denitrification of single-auxiliary boilers and improvement of unit safety, in particular to a flue gas passage system that satisfies low-load denitrification of adjacent boilers and mutual backup of flues. Background technique [0002] According to relevant national requirements, the off-line peak regulation capacity of each thermal power unit is reduced from 50% to 30%, otherwise the grid connection agreement will be signed again. At present, the installed capacity of new energy is increasing rapidly. Therefore, thermal power units must proceed from the policy and the ability to adapt to the market. Carry out flexible peak shaving transformation. The biggest problem with the reduction of thermal power units from 50% to 30% is that the denitrification temperature cannot reach the temperature required by the catalyst. Therefore, it is necessary to increase the temperature of the denitrification i...

Claims

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Application Information

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IPC IPC(8): F23J11/00F23J15/02F23L11/00B01D53/86B01D53/56
CPCB01D53/8631F23J11/00F23J15/02F23J2215/10F23L11/00
Inventor 王文鼎
Owner NORTHWEST BRANCH OF CHINA DATANG CORP SCI & TECH RES INST
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