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Multi-level refined intelligent denitration system and method based on big data and firefly algorithm

A firefly algorithm, refined and intelligent technology, applied in chemical instruments and methods, separation methods, calculations, etc., can solve problems such as inability to adapt to changes in coal types and loads, uneven concentration field distribution, and inability to achieve fine ammonia injection

Active Publication Date: 2021-01-01
NANJING GUODIAN ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

Solve the problems of uneven distribution of SCR flow field and concentration field, the inability to realize refined ammonia injection, and the inability to adapt to changes in coal types and loads, and finally realize intelligent denitrification under ultra-low emissions of coal-fired power plants

Method used

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  • Multi-level refined intelligent denitration system and method based on big data and firefly algorithm

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Embodiment Construction

[0077] In order to make the object, technical solution, and advantages of the present invention clearer, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0078] The technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all examples. Based on the present invention All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0079] Such asfigure 1 As shown, a multi-level refined intelligent denitrification system based on big data and firefly algorithm, including economizer, SCR denitrification device, air preheater, dust removal device, desulfurization devic...

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Abstract

The invention discloses a multi-level refined intelligent denitration system based on big data and a firefly algorithm. The system comprises a coal economizer, an SCR denitration device, an air preheater, a dust removal device, a desulfurization device, a tail gas emission device, a boiler unit, an ammonia spraying main pipe assembly, a denitration inlet flow speed and NOx field distribution monitoring system, a denitration outlet NOx / NH3 field distribution monitoring system, a catalyst area NOx field distribution monitoring system and a catalyst area NOx / NH3 non-uniformity analysis system. According to the system disclosed in the invention, through big data and a particle swarm optimization algorithm, an ammonia spraying branch pipe real-time adjustment system is established, and dual control of partition control and ammonia spraying total amount optimization is realized; the flow field matching is accurate, the variable working condition adaptability is high, the quality of ammonia spraying control can be effectively improved, and the SCR performance can meet the NOx ultralow emission requirement; the comprehensive effects of saving the ammonia spraying amount, reducing the NOx emission concentration, reducing the air pre-heater blockage probability and reducing tail equipment dust accumulation are achieved.

Description

technical field [0001] The invention relates to a denitrification system of a coal-fired power plant, in particular to a multi-level refined intelligent denitrification system, which belongs to the technical field of power plant pollution treatment. Background technique [0002] Due to the stricter NO in our country X Emission limits, in addition to combustion control technology, must also be combined with post-combustion flue gas denitrification technology, mainly including SCR, SNCR and SCR / SNCR hybrid technologies. The denitrification transformation of coal-fired power plants is showing an all-round explosive growth trend. Among them, the SCR flue gas denitrification technology accounts for more than 95% of the denitrification capacity of thermal power units due to its high denitrification efficiency (up to 90%). The mainstream technology of gas denitrification. [0003] SCR flue gas denitration technology, due to incomplete digestion and absorption of denitrification t...

Claims

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Application Information

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IPC IPC(8): B01D53/86G06N3/00B01D53/56
CPCB01D53/8625G06N3/006B01D2251/2062
Inventor 易辉顾梦埙李红涛黄阅
Owner NANJING GUODIAN ENVIRONMENTAL PROTECTION TECH
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