【摘要】：微波負(fù)壓干燥是一種新型的干燥技術(shù),其干燥原理是：在負(fù)壓狀態(tài)下,置于交變電場中的物料的水分子被極化后運(yùn)動(dòng)加劇,水分子之間摩擦生熱,使物料表面水分蒸發(fā),物料內(nèi)部和外部形成了溫度梯度和濕度梯度,從而加速水分從物料由內(nèi)向外遷移,實(shí)現(xiàn)干燥目的。由于微波功率、真空度、干燥時(shí)間、物料性質(zhì)等參數(shù)對(duì)物料的干燥質(zhì)量密切相關(guān),因此,對(duì)微波負(fù)壓干燥技術(shù)的工藝研究成為干燥領(lǐng)域的研究熱點(diǎn)。 本課題以筒子紗為干燥對(duì)象,分析筒子紗在微波負(fù)壓干燥過程中,工藝參數(shù)對(duì)其干燥特性的影響,旨在降低能耗,提高干燥效率和質(zhì)量。此外,還將微波負(fù)壓干燥技術(shù)應(yīng)用到人造板的甲醛快速釋放試驗(yàn),以拓展將微波負(fù)壓干燥技術(shù)在其他領(lǐng)域的應(yīng)用。主要內(nèi)容有： 1、微波負(fù)壓干燥技術(shù)的研究。主要研究傳統(tǒng)的干燥方法和干燥設(shè)備;微波干燥技術(shù)的加熱原理、傳熱機(jī)理、能耗計(jì)算；負(fù)壓干燥的基本原理；微波負(fù)壓干燥的特點(diǎn)和應(yīng)用前景。 2、微波負(fù)壓干燥試驗(yàn)設(shè)備的優(yōu)化。完成微波負(fù)壓干燥設(shè)備主要性能的測定、輸出功率計(jì)算、擊穿場強(qiáng)校核；對(duì)微波負(fù)壓試驗(yàn)設(shè)備進(jìn)行優(yōu)化,包括負(fù)壓系統(tǒng)的優(yōu)化,磁控管散熱的改進(jìn),微波場均勻性的優(yōu)化；制定微波負(fù)壓試驗(yàn)設(shè)備的操作規(guī)范。 3、完成筒子紗微波負(fù)壓干燥工藝試驗(yàn)。以筒子紗為烘干對(duì)象,研究干燥時(shí)間對(duì)微波負(fù)壓干燥效果的影響,完成試驗(yàn)過程單因素分析。采用響應(yīng)面分析法、筒子紗正交試驗(yàn)分析法,完成微波負(fù)壓干燥的多因素影響試驗(yàn)分析。此外,完成復(fù)合木質(zhì)板材甲醛的快速釋放工藝試驗(yàn)。 4、微波負(fù)壓干燥的效益分析。完成微波負(fù)壓干燥技術(shù)的經(jīng)濟(jì)效益分析,包括微波負(fù)壓干燥設(shè)備的能源利用率和熱效率計(jì)算,微波負(fù)壓干燥與熱風(fēng)干燥的能源利用率比較,微波負(fù)壓干燥經(jīng)濟(jì)性分析。
[Abstract]:Microwave negative pressure drying is a new drying technology. The drying principle is: under negative pressure, the water molecules placed in the alternating electric field become more and more active, and the friction between the water molecules generates heat, which evaporates the water content on the surface of the material. The temperature gradient and humidity gradient are formed inside and outside the material, which accelerates the moisture transfer from the inside to the outside of the material and realizes the purpose of drying. Because microwave power, vacuum, drying time and material properties are closely related to the drying quality of materials, the study of microwave negative pressure drying technology has become a hot spot in the field of drying. In order to reduce energy consumption and improve drying efficiency and quality, the influence of process parameters on drying characteristics of bobbin yarn during microwave negative pressure drying was analyzed. In addition, microwave negative pressure drying technology was applied to the rapid release test of formaldehyde in wood-based panels to expand the application of microwave negative pressure drying technology in other fields. The main contents are as follows: 1. Microwave negative pressure drying technology. This paper mainly studies the traditional drying methods and drying equipment, the heating principle, heat transfer mechanism, energy consumption calculation of microwave drying technology, the basic principle of negative pressure drying; The characteristics and application prospect of microwave negative pressure drying. 2. Optimization of microwave negative pressure drying test equipment. The main performance of microwave negative pressure drying equipment is determined, the output power is calculated, the breakdown field strength is checked, the microwave negative pressure test equipment is optimized, including the optimization of negative pressure system, the improvement of magnetron heat dissipation, and the optimization of microwave field uniformity. To establish the operation specification of microwave negative pressure test equipment. 3, to complete the microwave negative pressure drying process test of bobbin yarn. The effect of drying time on microwave negative pressure drying was studied, and the single factor analysis was completed. Response surface analysis and orthogonal test were used to analyze the effect of microwave negative pressure drying. In addition, complete the rapid release process test of composite wood plate formaldehyde. 4, the benefit analysis of microwave negative pressure drying. The economic benefit analysis of microwave negative pressure drying technology is completed, including the calculation of energy utilization ratio and thermal efficiency of microwave negative pressure drying equipment, the comparison of energy utilization ratio between microwave negative pressure drying and hot air drying, and the economic analysis of microwave negative pressure drying.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TB4

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 武杰;潘磊慶;程雷;張斌;馬龍;;微波真空包裝技術(shù)的原理及應(yīng)用研究[J];安徽農(nóng)業(yè)科學(xué);2009年22期

2 吳稚琦;孫麗娟;;微波真空干燥固體蜂蜜的等溫吸濕規(guī)律的研究[J];干燥技術(shù)與設(shè)備;2007年03期

3 紀(jì)勛光;張力偉;車剛;張偉;;微波真空干燥技術(shù)的探討[J];干燥技術(shù)與設(shè)備;2009年05期

4 王棟;;微波加熱在紗線烘干中的應(yīng)用[J];干燥技術(shù)與設(shè)備;2012年02期

5 嚴(yán)平,錢尚源,敖凌;真空微波低溫干燥技術(shù)探討[J];能源研究與信息;2003年04期

6 孫麗娟;崔政偉;;微波真空干燥法生產(chǎn)固體蜂蜜[J];食品研究與開發(fā);2007年02期

7 宋蕓;崔政偉;;微波真空干燥胡蘿卜片過程中收縮變形的數(shù)學(xué)模型研究[J];食品科技;2008年01期

8 牟群英,李賢軍;微波加熱技術(shù)的應(yīng)用與研究進(jìn)展[J];物理;2004年06期

9 楊伯倫,賀擁軍;微波加熱在化學(xué)反應(yīng)中的應(yīng)用進(jìn)展[J];現(xiàn)代化工;2001年04期

10 湯大衛(wèi),張?zhí)焓?微波真空干燥技術(shù)的運(yùn)用與前景[J];醫(yī)藥工程設(shè)計(jì);2000年05期

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