Method for identifying pulp wood based on near infrared spectrum

A technology of near-infrared spectroscopy and pulping materials, which is applied in the field of pulping materials, and can solve the problems of consuming a lot of time and manpower

Inactive Publication Date: 2016-01-06
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of consuming a lot of time and manpower when identifying pulping materials in the pulp and paper industry, and to provide a method that can quickly and non-destructively identify pulping materials

Method used

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  • Method for identifying pulp wood based on near infrared spectrum
  • Method for identifying pulp wood based on near infrared spectrum
  • Method for identifying pulp wood based on near infrared spectrum

Examples

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Embodiment 1

[0035] Select representative age-appropriate Eucalyptus and Acacia plants, peel them and cut them into uniform wood chips (about 20mm×10mm×2mm), and collect 86 samples in total. After placing it in the air to fully balance the moisture, use the near-infrared spectrometer to set the scanning range to 1600-2400nm and the resolution to 8cm -1 , to collect the original near-infrared spectral data of all wood chips, see figure 1 . use X10.1 software performs multivariate scattering correction and Norris differential filter preprocessing to improve the spectral signal-to-noise ratio and reduce random noise. All sample spectral data were divided into training set and verification set, of which 70 sample data in the training set were used to establish the discriminant model; 16 sample data in the verification set were used for model verification.

[0036] According to the sample category attribute, assign the training set sample classification variable value, eucalyptus is Y=0, ac...

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Abstract

The invention relates to a method for identifying pulp wood based on the near infrared spectrum. The method comprises the steps of a, peeling the pulp wood, and cutting the peeled pulp wood into wood chips in similar specifications; b, acquiring the original near infrared spectrum data of the pulp wood chip samples by means of a near infrared spectrograph after sufficient water balance; c, preprocessing the original near infrared spectrum data; d, establishing a pulp wood identifying model by means of data analysis methods such as the partial least squares discriminant analysis method; e, identifying the pulp wood by means of the identifying model. By means of the established model, quick and non-destructive identification of pulp wood trees can be achieved within several minutes. The problems of existing pulp wood identifying or classifying methods of being complicated, high in cost and incapable of meeting the requirement for quick classification during pulping are solved, the method has the advantages of being easy and quick, and the traditional mode that available materials are used blindly without identification can be changed.

Description

Technical field: [0001] The invention is a method for discriminating pulping materials, especially a method for discriminating pulping materials based on near-infrared spectrum technology. Background technique: [0002] In recent years, the proportion of broad-leaved wood in the world's papermaking fiber materials has gradually increased, and now it has surpassed coniferous wood to become the main papermaking material. Among them, there are many varieties of eucalyptus and acacia, and they have fast growth, good fiber shape, and pulping per unit volume of wood. The advantages of high yield and production efficiency. At present, large-scale pulping and papermaking enterprises often mix pulping materials from multiple sources and different varieties according to the supply of raw materials. In order to achieve the goal of combining forestry and paper, it is necessary to break the tradition of using available materials. Realize the rapid identification of pulping materials and...

Claims

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Application Information

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IPC IPC(8): G01N21/359G01N21/3563
Inventor 房桂干吴珽崔宏辉梁龙邓拥军
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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