Boiler thermal efficiency online calculation method of household garbage incineration boiler

A technology for domestic waste incineration and boiler thermal efficiency, which is applied in the directions of calculation, computer-aided design, design optimization/simulation, etc., can solve the problem of inability to accurately obtain the thermal efficiency of domestic waste incineration boilers with external steam-air preheaters in real time, etc. Achieve the effect of improving the level of domestic waste resource utilization, improving the offline and intermittent situation, and promoting the unification of safety and economy

Pending Publication Date: 2022-02-25
ANHUI SPECIAL EQUIP INSPECTION INST +1
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  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the boiler thermal efficiency of the domestic waste incineration boiler with an external steam air preheater cannot be accurately obtained in real time in the prior art. The present invention provides an online calculation method for the boiler thermal efficiency of the domestic waste incineration boiler

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  • Boiler thermal efficiency online calculation method of household garbage incineration boiler
  • Boiler thermal efficiency online calculation method of household garbage incineration boiler
  • Boiler thermal efficiency online calculation method of household garbage incineration boiler

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specific Embodiment approach 1

[0020] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the boiler thermal efficiency online calculation method of the domestic waste incineration boiler described in this embodiment, the calculation method is realized based on the boiler thermal efficiency online calculation system of the domestic waste incineration boiler, the domestic waste incineration boiler is an external Domestic waste incineration boiler with steam air preheater, the calculation system includes DCS data acquisition system 1, online flue gas measurement and data recording system 2, online fuel / ash / slag composition analysis system 3 and boiler thermal efficiency online calculation platform 4;

[0021] The calculation method includes the following steps:

[0022] S1. Use DCS data collection system 1, online flue gas measurement and data recording system 2 and online fuel / ash / slag composition analysis system 3 to collect data from the boiler body system 5, and ...

specific Embodiment approach 2

[0030] Specific embodiment 2: The difference between this embodiment and the boiler thermal efficiency online calculation method of domestic waste incineration boiler described in specific embodiment 1 is that in step S1, the DCS data acquisition system 1 and the online flue gas measurement and data recording system 2 are used and the online fuel / ash / slag component analysis system 3 carry out data collection to the boiler body system 5, and all the collected data are:

[0031] The data collected by DCS data acquisition system 1 includes D out , t zgs ,p zgs , t zzq ,p zzq ,p bh 、D bh , t bh.out ,p bh.out , t cq.in ,p cq.in 、D cq , t cq.out ,p cq.out ,q a1 , t a1 ,q a2 and t a2 ;

[0032] The data collected by the online flue gas measurement and data recording system 2 include t ds 、C O2 、C CO2 and C CO ;

[0033] The data collected by the online fuel / ash / slag composition analysis system 3 include Car 、H ar , O ar , S ar , N ar 、A ar , M ar , Q net....

specific Embodiment approach 3

[0038] Specific embodiment three: the difference between this embodiment and the boiler thermal efficiency online calculation method of domestic waste incineration boiler described in specific embodiment two is that in step S1, the boiler thermal efficiency online calculation platform 4 uses the received data to obtain the exhaust heat loss Calorie Q 2 , Gas incomplete combustion heat loss heat Q 3 , Solid incomplete combustion heat loss heat Q 4 , Boiler heat dissipation loss Q 5 , Ash physical heat loss heat Q 6 and heat input Q in The implementation method includes the following steps:

[0039] S11. Obtain the input heat Q in The implementation method is: let Q in =Q net.v.ar ;

[0040] S12. Obtain heat loss Q of incomplete combustion heat of solid 4 The implementation method is:

[0041]

[0042] Among them, α s is the mass fraction of the ash content in the slag in the total ash content of the furnace fuel (dimensionless);

[0043] alpha as is the mass fra...

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Abstract

The invention discloses a boiler thermal efficiency online calculation method of a household garbage incineration boiler, and relates to the technical field of energy conservation of household garbage incineration boilers. The problem that in the prior art, the boiler heat efficiency of the household garbage incineration boiler with the external steam air preheater cannot be accurately obtained in real time is solved. Smoke exhaust heat loss heat Q2, gas incomplete combustion heat loss heat Q3, solid incomplete combustion heat loss heat Q4, boiler heat dissipation loss Q5, ash physical heat loss heat Q6 and input heat Qin are obtained through collected data, and then the boiler heat efficiency eta'is obtained through the collected data Q2, Q3, Q4, Q5, Q6 and Qin; and the boiler thermal efficiency online calculation platform corrects the boiler thermal efficiency eta'through an iterative algorithm, so that the corrected boiler thermal efficiency eta 'is obtained, and finally online calculation of the boiler thermal efficiency is completed. The invention is mainly used for on-line calculation of the thermal efficiency of the boiler.

Description

technical field [0001] The invention relates to the technical field of domestic waste incineration boiler energy saving. Background technique [0002] Domestic waste is a mixture of various wastes with complex components. At present, my country's domestic waste mainly adopts three main methods: sanitary landfill, composting and incineration. Among them, incineration is suitable for the treatment of waste with high calorific value. It has the characteristics of high degree of reduction, short treatment cycle, and small footprint. It has become the main method of harmless disposal of domestic waste in my country. [0003] The domestic waste incineration boiler is a pressure-bearing special equipment that uses domestic waste as fuel and converts its chemical energy into heat or electricity by incineration. As an important part of the trinity of boiler safety, energy saving and environmental protection, the normalized and accurate test of the thermal efficiency of domestic was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F119/08G06F119/14
CPCG06F30/20G06F2119/08G06F2119/14
Inventor 夏红伟徐力陈雷任霄汉张蕾杨必应
Owner ANHUI SPECIAL EQUIP INSPECTION INST
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