Method and system for measuring and calculating boiler smoke and dust emission concentration
A technology for emission concentration and smoke, applied in separation methods, chemical instruments and methods, calculations, etc., can solve problems affecting equipment design and selection, and inaccurate calculation of smoke and dust emission concentrations
Active Publication Date: 2018-04-03
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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[0033] Embodiments of the present invention are described in detail below:
[0034] refer to figure 1 As shown, in the method for measuring and calculating the concentration of smoke and dust emissions from boilers described in this implementation, the boiler includes a boiler body and a flue connected to the boiler body, and the flue is connected to a dry dust collector, a wet desulfurization device, and a wet dust collector;
[0035] The method for calculating the concentration of smoke and dust emissions includes the following steps:
[0036] Measure the soot concentration m after fuel combustion at the inlet of the dry dust collector o ;
[0037] At the outlet of the wet desulfurization device, measure the impurity concentration m carried out by the desulfurization droplets d ;
[0038] Obtain the dust removal efficiency η of the dry dust collector sp , Dust removal efficiency η of wet desulfurization unit sn And the dust removal efficiency η of the wet dust collect...
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The invention discloses a method and system for measuring and calculating the concentration of smoke and dust emissions from boilers. The method for measuring and calculating the concentration of smoke and dust emissions from boilers comprises a boiler body and a flue connected to the boiler body, and the flue is connected with sequentially arranged dry Dust collector, wet desulfurization device and wet dust collector; the method for calculating the smoke emission concentration includes the following steps: measuring the smoke concentration mo after fuel combustion at the entrance of the dry dust collector; measuring the smoke concentration mo at the outlet of the wet desulfurization device The impurity concentration md brought out by desulfurization droplets; obtain the dust removal efficiency ηsp of the dry dust collector, the dust removal efficiency ηsn of the wet desulfurization device, and the dust removal efficiency ηw of the wet dust collector; calculate the smoke emission concentration me by the following calculation formula: me =[mo×(1-ηsp)×(1-ηsn)+md]×(1-ηw), the dust removal efficiency ηsn of the wet desulfurization device and the impurity concentration md brought by the desulfurization droplets are added to the soot emission concentration me In the calculation formula, the result obtained is more consistent with the actual situation, and the calculation accuracy is higher.
Description
technical field [0001] The invention relates to the technical field of boiler testing, in particular to a method and system for measuring and calculating boiler smoke and dust emission concentration. Background technique [0002] Fuels used in boilers generally contain ash, which is a non-combustible mineral component of fuel. The combustible part forms flue gas (gas phase) under the combustion of air, and the ash is mixed in the flue gas in solid form. The solid matter mixed in the flue gas (gas phase) is called soot. Smoke is an air pollutant. The country has strict limit standards for the concentration of smoke and dust emitted by flue gas and the total annual emissions. Generally, the concentration of smoke and dust in boiler flue gas exceeds the limit, so dust removal treatment should be carried out on boiler flue gas , to remove most of the dust. [0003] Dry dust collector is the key equipment in the current boiler flue gas dust removal process. The mainstream equip...
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IPC IPC(8): G06F17/50B01D47/06
Inventor 霍沛强樊晓茹
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD