流化床厭氧反應(yīng)器特性研究

化工論文編號(hào):HG098  論文字?jǐn)?shù):13662,頁(yè)數(shù):36

目  錄

中文摘要 I
英文摘要 II
目  錄 III
1  緒論 1
1.1  工藝設(shè)計(jì)概述 1
1.2  污泥顆粒概述 4
2  實(shí)驗(yàn)部分 8
2.1  實(shí)驗(yàn)試劑及儀器 8
2.2  測(cè)定項(xiàng)目及方法 9
2.3  實(shí)驗(yàn)流程 10
2.4  實(shí)驗(yàn)步驟 11
3  結(jié)果與討論 13
3.1  蠕動(dòng)泵標(biāo)準(zhǔn)曲線的測(cè)定 13
3.2  污泥性質(zhì)與成分的測(cè)定 13
3.3  流量對(duì)反應(yīng)床層膨脹率的影響研究 15
3.4  流化床厭氧反應(yīng)器生產(chǎn)負(fù)荷變化規(guī)律研究 17
3.5  流量對(duì)各組分產(chǎn)氣量的影響研究 19
3.6  流量對(duì)產(chǎn)生氣體中各組分含量的影響研究 21
3.7  氣體產(chǎn)生對(duì)床層膨脹率的影響研究 21
3.8  流量對(duì)反應(yīng)器內(nèi)污泥顆粒大小的影響研究 22
4  中試規(guī)模厭氧反應(yīng)器處理豬糞廢水工藝設(shè)計(jì) 23
4.1  工藝流程設(shè)計(jì) 23
4.2  主要設(shè)備選型 25
5  總結(jié)與展望 29
致  謝 30
參考文獻(xiàn) 31

 摘 要：本文對(duì)流化床厭氧反應(yīng)器的流化及反應(yīng)特性進(jìn)行了研究，考察了流量對(duì)床層膨脹率、產(chǎn)氣量、氣體中各組分含量、反應(yīng)器內(nèi)污泥顆粒大小的影響，以及床層流化特性因?qū)嶒?yàn)過程中所產(chǎn)氣體而發(fā)生的變化；并對(duì)中試規(guī)模的關(guān)鍵設(shè)備進(jìn)行了選型及設(shè)計(jì)計(jì)算，同時(shí)規(guī)劃了厭氧處理工藝流程。研究結(jié)果顯示：床層實(shí)際初始流化流量vmf在3.73～4.16mL·min-1之間，與理論計(jì)算值3.864mL·min-1一致；在一定范圍內(nèi)，流量增大對(duì)反應(yīng)量的提高是有利的，當(dāng)流量為11.2mL·min-1時(shí)，單位時(shí)間內(nèi)的反應(yīng)量達(dá)到最大，反應(yīng)負(fù)荷為4.66mg·L-1·min-1；適當(dāng)提高流量有利于提高各組分的產(chǎn)氣量，但流量對(duì)氣體相對(duì)含量的影響不顯著，甲烷含量約是二氧化碳含量的7倍；由于氣體產(chǎn)生，熱模時(shí)床層膨脹率明顯高于冷模，在實(shí)驗(yàn)范圍內(nèi)，隨流量的增大，膨脹率相差有越來越大的趨勢(shì)；適當(dāng)提高流量有助于污泥顆粒的成長(zhǎng)。
 關(guān)鍵詞：污泥顆粒；流量；反應(yīng)器；工藝設(shè)計(jì)

Study on the Fluidized Bed Anaerobic Reactor

Abstract：In this paper, the influence of flow on the bed characteristics is researched, variation of the production load of the fluidized bed anaerobic reactor, the influence of the flow on the bed expansion rate, gas production of each component, the relative content of the gas produced, the size of granular sludge and the influence of the gas produced on the bed expansion rate are obtained. The key pilot scale equipments are selected on the basis of calculation and the process flow is designed. Research shows that: actual minimum fluidization flow, 3.73～4.16mL·min-1, is in good consistency with minimum fluidization flow, 3.864mL·min-1, in theory. Within a certain range of the flow, large flow is help to production load. When the flow is 11.2mL·min-1, the maximum production load is 4.66mg·L-1·min-1. Improving the flow properly is help to gas production of each component, but influence of flow on the relative content of the gas produced is not significant, the content of CH4 is almost 7 times than CO2. The bed expansion rate in cold model test is obviously higher than it in hot model test due to the gas produced. Within a certain range of the experiments, the difference value of bed expansion rate in the tests becomes larger when improving the flow. Improving the flow properly is help to the growth of the granular sludge.
Keywords：Granular sludge; Flow; Reactor; Technology design