A device for eliminating yellow smoke from the chimney at the initial stage of gas turbine startup

Abstract

The invention discloses a device for eliminating yellow smoke from a chimney in the starting initial stage of a gas turbine, the device includes a flue gas cooling module, a NOx absorption processing module and a control unit, wherein the flue gas cooling module includes a cooling water atomization unit, a water storage tank and a cooling water collecting tank, the cooling water collecting tank is arranged in an exhaust outlet flue, positioned below the cooling water atomization unit and used for collection of cooling water, the NOx absorption processing module includes a microbial solution spraying unit, an absorption chamber, a microbial solution collecting pool and a microbial culture pool, the microbial culture pool is used for storage and further processing of a microbial solution from the microbial solution collecting pool, and supplying the microbial solution to the microbial solution spraying unit by a microbial solution pump, and the device has the advantages of strong pertinence, high NOx removal efficiency, simple structure, low investment, low operation cost and the like.

Description

technical field [0001] The invention relates to the technical field of pollutant removal, in particular to a device for eliminating yellow smoke from a chimney at the initial stage of starting a gas turbine. Background technique [0002] The gas turbine unit has the characteristics of high energy conversion efficiency, less pollutant emission, quick start and stop, and flexible operation. In recent years, with the large-scale development and utilization of natural gas resources, the country's "West-to-East Gas Pipeline" and the introduction of foreign liquefied natural gas have been fully implemented. At present, with the increasingly stringent environmental protection requirements, the relatively high concentration of NOx produced during the start-up process of gas turbines is about 180-200mg / Nm 3 , has been unable to meet the national environmental protection emission requirements, and yellow-brown smoke will appear in the chimney, and the visual sense is extremely poor, ...

AI Technical Summary

Problems solved by technology

During the start-up process of the gas turbine, the exhaust gas temperature of the waste heat boiler is only 80°C, which cannot meet the current temperature window of SCR denitrification. It is necessary to develop a new low-temperature catalyst or adopt a heating method, which will inevitably bring higher operating costs

[0008] To sum up, so far, although the conventional gas turbine combustion adjustment technology or flue gas post-treatment technology can reduce the NOx in the gas turbine start-up process to a certain extent, there are more or less problems, and some even affect to safe operation of gas turbines

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