Simulation and optimization system of flue gas desulfurization process of thermal power plant

A technology for process simulation and wet flue gas desulfurization, which is applied in the field of simulation and optimization system software for flue gas desulfurization process in thermal power plants, which can solve problems such as potential safety hazards, increased chip operating load, and system impact

CN102580513AInactive Publication Date: 2012-07-18FUJIAN PROVINCIAL ACADEMY OF ENVIRONMENTAL SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a simulation and optimization system of a flue gas desulfurization process of a thermal power plant. The simulation and optimization system is composed of a server and a client. A limestone-gypsum wet fuel gas desulfurization model is firstly established to realize simulation of the desulfurization process; and a multi-objective normalized optimization method is used for optimizing and simulating artificially set work conditions so as to sieve an optimal operating condition under each work condition and package the optimal operating condition as an optimized operation database. The server monitors a real-time data document of a DCS (Distributed Control System) sent by an SIS (Supervisory Information System) database, finds matched records in the optimized operation database via a way of database retrieval and then sends the real-time data and relevant advices to the client for a user to check. The server and the client realize connection and user management through an LAN (Local Area Network). The simulation and optimization system, disclosed by the invention, has the advantages of providing an optimization control platform for the desulfurization system of the thermal power plant, providing optimized operation advices and early warnings for operators without directly operating the DCS system and thereby improving normal running rate, desulfurization efficiency and SO2 discharge concentration attainment rate of the desulfurization system.
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Description

technical field

[0001] The invention relates to a simulation optimization system software for flue gas desulfurization process in a thermal power plant, in particular to a process simulation optimization and online data viewing system software for a limestone-gypsum wet flue gas desulfurization device in a coal-fired power plant. Background technique

[0002] To protect the environment, coal-fired power plants need to be controlled emission. Current control of coal-fired power plants There are mainly three ways of emission: desulfurization before combustion, desulfurization during combustion, and desulfurization after combustion. Post-combustion desulfurization, or flue gas desulfurization, is currently controlled The most effective way is also a way commonly used in the world. In the flue gas desulfurization method, limestone-gypsum wet flue gas desulfurization is a commonly used technology at present.

[0003] Limestone-gypsum wet flue gas desulfurization process u...

Examples

Embodiment

[0167] For a four-layer spray flue gas desulfurization absorption tower equipped with 4 slurry circulation pumps. The fluctuation range of flue gas flow is 800 ~ 1500kNm 3 / hr. Flue gas inlet SO 2 The concentration fluctuation range is 800 ~ 5000mg / Nm 3 . Flue gas inlet gauge pressure fluctuation range is -1000~1000Pa.

[0168] 1, Build an optimized operation database

[0169] Compile the desulfurization process calculation model according to the instructions.

[0170] Set optimization goals according to relevant desulfurization policies, emission standards and other binding indicators: SO 2 The emission reduction is the largest while the power consumption is the lowest, and the desulfurization efficiency can reach 95% or SO 2 The emission concentration is lower than the requirement of 105mg / L. The weighting method is used for normalization processing, with sewage charges and electricity charges as weights, and the goal after normalization is economic benefits.

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