An Online Dynamic Calculation Method for the Residence Time of Flue Gas from Waste Incinerator
A waste incinerator and residence time technology, applied in the direction of combustion method, incinerator, combustion type, etc., can solve the problem of not being able to dynamically reflect the working conditions in real time
Active Publication Date: 2019-12-03
DYNAGREEN ENVIRONMENTAL PROTECTION GROUP
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However, in actual production, there is only furnace temperature measurement, but no flue gas residence time measuring instruments. The only thing that can prove "flue gas residence time ≥ 2 seconds" is the boiler design calculation book, which cannot dynamically reflect the working conditions in real time.
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[0123] The present invention will be further described below in conjunction with the description of the drawings and specific embodiments.
[0124] Explanation of terms:
[0125] Flue gas residence time: refers to the duration of the flue gas produced by the combustion of domestic waste incinerators in the high temperature range (higher than 850 ° C), that is, the first flue of the boiler (hereinafter referred to as "furnace") from the secondary tuyere to the flue gas. The gas temperature (hereinafter referred to as "furnace temperature") is equal to the total elapsed time of the flue gas between layers at 850°C.
[0126] Such as figure 1 As shown, an online dynamic calculation system for the residence time of flue gas in a waste incinerator includes a detection instrument and a process calculation control station system connected to the detection instrument. The process calculation control station system includes an I / O channel, a control station , a communication interface...
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The present invention provides a method for online dynamic calculation of flue gas residence time of a garbage incinerator. The method comprises the following steps of: S1, setting parameters of a boiler proper; S2, calculating a flue gas flow; S3, calculating a flue gas cleaning air leakage rate; S4, calculating a total air leakage rate; S5, calculating a furnace flue gas standard state flow; S6,arranging a plurality of parameter monitoring points in the furnace from top to bottom, and calculating a flue gas flow of each parameter monitoring point; S7, calculating effective heights of adjacent parameter monitoring points; S8, calculating a line of elevation of a set temperature; S9, calculating effective volumes of adjacent parameter monitoring points; S11, calculating flue gas residencetime of the adjacent parameter monitoring points; and S12, calculating total residence time. The present invention further provides a system for online dynamic calculation of flue gas residence timeof a garbage incinerator. The method and the system for online dynamic calculation of flue gas residence time of the garbage incinerator can perform online dynamic calculation of gas residence time ofthe garbage incinerator.
Description
technical field [0001] The invention relates to a garbage incinerator, in particular to an online dynamic calculation method for the residence time of flue gas in a garbage incinerator. Background technique [0002] According to the national standard "GB18485-2014 "Standards for Pollution Control of Domestic Garbage Incineration"", there is an important indicator: "incineration temperature in the furnace ≥ 850 ° C" and "smoke residence time ≥ 2 seconds". However, in actual production, there is only furnace temperature measurement, but no flue gas residence time measuring instruments. The only thing that can prove "flue gas residence time ≥ 2 seconds" is the boiler design calculation book, which cannot dynamically reflect the working conditions in real time. . [0003] "GB18485-2014 "Pollution Control Standards for Domestic Garbage Incineration" has clear requirements for "furnace flue gas temperature ≥ 850 °C and residence time ≥ 2 seconds". At the same time, in various en...
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IPC IPC(8): G01D21/02G06F17/12
CPCF23G2900/55G01D21/02G06F17/12
Inventor 田贵明张卫谢建张体强陈国进卢康王高峰宾霞贺姣丽黄伟坚
Owner DYNAGREEN ENVIRONMENTAL PROTECTION GROUP