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Compound-fertilizer nutrient-content soft-measuring modeling method beased on hybrid multiple models

A technology of nutrient content and modeling method, which is applied in measurement devices, chemical method analysis, analysis materials, etc., can solve problems such as increasing product cost, and achieve the effects of good reliability, high estimation accuracy, and overcoming saturation.

Inactive Publication Date: 2006-08-09
ZHEJIANG UNIV
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Problems solved by technology

Unqualified products must be reworked and reprocessed, which greatly increases the product cost

Method used

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  • Compound-fertilizer nutrient-content soft-measuring modeling method beased on hybrid multiple models
  • Compound-fertilizer nutrient-content soft-measuring modeling method beased on hybrid multiple models
  • Compound-fertilizer nutrient-content soft-measuring modeling method beased on hybrid multiple models

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Experimental program
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Embodiment Construction

[0041] Explanation of terms in the present invention:

[0042] Soft measurement: In the modern industrial production process, there is a large category of variables that reflect product quality. For technical or economic reasons, they cannot be directly measured by conventional sensors, but are detected by online analyzers or analyzed in the laboratory. The analysis cycle is long and the lag is large (for example, the nutrient content of compound fertilizer is only analyzed every few hours, and the analysis lags for several hours). However, the real-time detection of these variables plays an important role in ensuring product quality, continuous and stable operation of production equipment, and fully exerting the production capacity of the equipment. If the lagging test value is used, it will not be able to correctly reflect the real-time working conditions, and at the same time, the operator usually leaves too much room for insurance, which will also reduce the economic benef...

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Abstract

Present invention discloses a modeling method for nutrient content soft measuring based on mix multiple mold type compound fertilizer. Modeling method features 1, whole pattern is mixed model consisting of based on data driven 3 submodel and based on simplify mechanical models 1 submodel, wherein the outputting of data driven submodel used as inputting of based on simplify mechanical models submodel, 2, simplifying mechanical models related model parameter determining method, determining potassium chloride and concentrated sulfuric acid extent of reaction parameter according to chloride ion content and material balance in finished product, 3, method determining (NH4)2HPO4 quality, according to neutralization degree value and measuring method, combining concerned chemical equation to calculate said quality. Said invention has advantages of Said invention has advantages of simple model building, strong explicable ability, high reliability, and fine extrapolate ability.

Description

technical field [0001] The invention relates to a soft-sensing modeling method for the nutrient content of compound fertilizers based on mixed multi-models. Background technique [0002] Compound (mixed) fertilizer is an inevitable trend in the development of modern chemical fertilizer industry. In countries with developed chemical fertilizer industry, its output has accounted for 70% to 80% of the total fertilizer consumption. In my country's "Tenth Five-Year Plan", the production of compound (mixed) fertilizers has been taken as the direction of chemical fertilizer industry structure adjustment. In recent years, the production of compound (mixed) fertilizers in my country has developed rapidly, and thousands of sets of compound (mixed) fertilizer production devices with aggregate method have been built successively. Sulfur-based nitrogen, phosphorus and potassium (S-NPK) compound fertilizer is popular among farmers for its advantages of being suitable for various food cro...

Claims

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Application Information

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IPC IPC(8): G01N31/00G01N33/00G06F19/00
Inventor 苏宏业傅永峰褚健荣冈古勇金晓明
Owner ZHEJIANG UNIV
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