Fume temperature coordination type wide load denitrification system

A technology for flue gas temperature and denitrification, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve problems such as catalyst poisoning and failure, and achieve the effects of easy structure, sufficient load width, and remarkable results

Inactive Publication Date: 2015-04-29
SHANGHAI ELECTRIC POWER CO LTD +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a flue-temperature coordinated wide-load denitrification system with good temperature adjustment and coordination performance, low cost, high efficiency and low pollution, and solve the problem of catalyst poisoning caused by ammonia gas in the SCR device system failure

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  • Fume temperature coordination type wide load denitrification system
  • Fume temperature coordination type wide load denitrification system
  • Fume temperature coordination type wide load denitrification system

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Embodiment Construction

[0020] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0021] The present invention is a wide-load denitrification system with coordinated flue gas temperature, which is mainly used for raising and adjusting the flue gas temperature before the flue gas denitrification device 4 at the boiler tail, such as figure 1 As shown, it includes the tail smoke shaft 5, the economizer 1 arranged in the front section of the tail smoke shaft 5, the partition plate 2 in the middle of the economizer 1, and the flue gas denitrification device 4 in the rear section of the tail smoke shaft 5. The back of the flue gas outlet of the economizer 1 in the tail flue shaft 5 is installed with an adjusting baffle 3 controlled by the control system to open and close. The fixed end of the adjusting baffle 3 is fixed on the side wall of the smoke well 5 at the tail. The movable end of the adjustment baffle 3 is c...

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Abstract

The invention discloses a fume temperature coordination type wide load denitrification system which comprises an economizer arranged in a front section of a tail fume well and a separator arranged in the middle of the economizer, wherein a flue gas denitrification device is arranged in the rear section of the tail fume well; a fume temperature measuring point is formed at the fume outlet of the economizer; and the system is characterized in that an adjustable baffle controlled to open and close by virtue of a control system is arranged in the rear of the fume outlet of the economizer in the tail fume well. According to the technical problem, the fume temperature at the inlet of an SCR denitrification device is adjusted, so that the SCR denitrification device operates in an uninterrupted mode, the SCR denitrification efficiency of the boiler is properly improved, and the safe and economic operation of the boiler is guaranteed.

Description

technical field [0001] The invention relates to a flue temperature coordinated wide-load denitrification system, which belongs to the field of boiler flue gas systems of power station generator sets. Background technique [0002] The power industry has sulfur dioxide (chemical formula SO 2 ), the three major pollution sources that keep pace with the emission concentration of smoke and dust--nitrogen oxides (referred to as NO X ), are listed by the National Development and Reform Commission as a "better" obstacle to urban construction, and are discussed by the majority of urban people. They are one of the main sources of pollution for coal-fired boiler flue gas emissions. [0003] For this reason, the State Environmental Protection Administration has issued the "Emission Standards for Air Pollution from Thermal Power Plants", which will implement the NOx emission concentration of all newly built thermal power units to reach 100mg / Nm from January 1, 2012 3 The following requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/56F23J15/04
Inventor 朱宰基
Owner SHANGHAI ELECTRIC POWER CO LTD
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