Fixed type gas turbine generators tail gas treatment method and system thereof

Abstract

The invention discloses a fixed type gas turbine generators tail gas treatment method and system thereof. The method comprises the following steps that an SCR catalyst is arranged in an exhaust pipeline of the gas turbine generators; a preset number of urea is sprayed into the SCR catalyst; an actual emission value of NOx of an outlet of the SCR catalyst is measured; and according to the actual NOx emission value and a preset NOx theoretical emission value, the quantity of urea injected into the SCR catalyst is adjusted. According to the method, the tail gas emission standard of the fixed typegas turbine generator can be effectively improved.

Description

technical field [0001] The invention relates to tail gas treatment technology, in particular to a method and system for treating tail gas of a fixed gas generator. Background technique [0002] Selective catalytic reduction (Selective Catalytic Reduction, referred to as SCR) technology refers to the use of a reducing agent (urea) to "selectively" react with nitrogen oxides in the exhaust gas under the action of a catalyst to generate non-toxic and pollution-free Nitrogen and water, without reacting with the oxygen in the exhaust gas, achieve the purpose of reducing nitrogen oxides in the exhaust gas, and the efficiency is about 80% to 90%. [0003] Nitrogen oxides in the exhaust of internal combustion engine generator sets, mainly including nitrogen monoxide and nitrogen dioxide, are one of the main sources of air pollution. The principle of SCR technology is that when the mixture of exhaust gas, reducing agent (urea) and air passes through the honeycomb or plate catalytic ...

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a fixed gas generator tail gas treatment method and its system to solve the problem that the existing technology cannot meet the tail gas emission standards

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