【正文】
到較高的自動(dòng)化程度。3) 場區(qū)排氣:采用煙囪排氣。有貯氣罐的也要定時(shí)排水。 2) 轉(zhuǎn)動(dòng)部位定期注油。 15) 實(shí)載運(yùn)行:工藝設(shè)備正式運(yùn)行,除塵器正式進(jìn)行過濾除塵,PLC程控儀亦正式投入運(yùn)行(一般提前5~10分鐘運(yùn)行),隨時(shí)對各運(yùn)動(dòng)部件、閥門進(jìn)行檢查,記錄好運(yùn)行參數(shù)。袋框(龍骨)應(yīng)垂直、從袋口往下安放。試驗(yàn)壓力按要求,最小壓力采用除塵器后系統(tǒng)風(fēng)機(jī)的風(fēng)壓值。2) 在回轉(zhuǎn)窯低溫階段,當(dāng)煙氣溫度降至50℃時(shí),通過高溫?zé)煔獍l(fā)生器混入高溫?zé)煔?,使進(jìn)入除塵器的煙氣溫度提高至50℃以上 。I 確定過濾周期J 壓縮空氣總耗氣量計(jì)算噴吹空氣量,2~3L/(次*條袋);n—濾袋總數(shù);T—噴吹周期,s,一般為60~120s;安全系數(shù),~。H 確定進(jìn)氣管、排氣管直徑和管道阻力取進(jìn)氣速度t=22m/s,則進(jìn)氣管直徑:d==。為方便布置取袋數(shù)為1296個(gè),則實(shí)際過濾速度:V= m*min-1=。3) 本設(shè)計(jì)所選用的玻纖針刺氈,經(jīng)表面處理,具有耐高溫和耐化學(xué)腐蝕、憎水性強(qiáng)、粉塵剝離性好、濾袋壽命長等特點(diǎn),可在300℃溫度下連續(xù)使用達(dá)3年。2) 因分箱結(jié)構(gòu)清灰時(shí)不用克服上升氣流造成的負(fù)面效應(yīng),還有以下好處:可采用長袋結(jié)構(gòu);采用低壓噴吹即可,節(jié)省能源;清灰容易,且避免了周邊濾袋的二次吸附,可減少清灰次數(shù),延長濾袋使用壽命。采用長袋結(jié)構(gòu),可使得收塵器體積、重量與不分箱相當(dāng);設(shè)備價(jià)格低,安裝周期短,工藝布置容易。 當(dāng)含水份量較大,粉塵濃度又較大時(shí),宜選用防水、防油濾料(或稱抗結(jié)露濾料)或覆膜濾料(基布應(yīng)是經(jīng)過防水處理的針刺氈)。 脈沖布袋除塵器相關(guān)技術(shù)及參數(shù)選擇A 布袋材料的選擇布袋除塵器除塵效果的優(yōu)劣與多種因素有關(guān),但主要取決于濾料。4) 自動(dòng)化程度高。C 脈沖除塵器簡介袋除塵器按結(jié)構(gòu)、清灰方式等分成很多品種,每一品種因各自的特點(diǎn)而適合一定的工藝條件。3) 適用范圍廣:、300~400。用袋除塵器凈化煙塵時(shí)的溫度不能低于露點(diǎn)溫度,否則將會(huì)產(chǎn)生結(jié)露,堵塞布袋濾料的空隙。4) 袋除塵器可設(shè)計(jì)制造出適合不同氣量的含塵氣體的要求。 6)老設(shè)備改造能利用現(xiàn)有場地,便于安裝。具體選擇時(shí)可以根據(jù)粒徑分布和其他要求,參考表1進(jìn)行初步選擇?! ?)腐蝕性大。(3)低壓大型脈沖袋式除塵器。袋收塵器主要依靠這層粉塵進(jìn)行高效的過濾,而濾料本身只是起到支撐這層粉塵層的作用。(3)KFH型系列電除塵器、配套用于25600MW電站燃媒鍋爐。脫硫效率一般在60%左右,但耐磨、防腐、脫水、防結(jié)垢及堵塞等問題還需繼續(xù)改進(jìn)。近幾年的主要成果有:(1)多進(jìn)口旋風(fēng)除塵器,在燃媒電廠鍋爐、水泥回轉(zhuǎn)窯、軋鋼加熱爐上應(yīng)用,取得很好的效果。 沉降室投資少,簡單易行,但沉降效率低,粉塵顆粒越細(xì)效率越差,一般的效率約30%—50%,對煙氣中有害氣體基本不起作用,故新增除塵設(shè)施不宜采用。 水泥廠回轉(zhuǎn)窯粉塵污染治理水泥廠回轉(zhuǎn)水泥窯窯尾煙塵的主要特點(diǎn):一般來說,水泥廠回轉(zhuǎn)水泥窯窯尾煙塵的主要特點(diǎn)有:粒徑細(xì)(平均粉塵粒徑130μ);濕度大;煙氣溫度高且波動(dòng)大;以及粉塵入口濃度高等特點(diǎn)。關(guān)鍵詞:水泥回轉(zhuǎn)窯,煙氣,除塵specificationIn order to control the cement industry the air pollutant emissions, the promotion cement industry industrial structure adjustment, Country Environmental protection Bureau organized China Environmental science Research institute, Hefei Cement Research Design institute, Chinese Material Industry Science and industry Group Company to draft newly Cement industry Air pollutant Emissions Standard (GB49152004).The cement rotary kiln kiln tail is in the cement production link the dust withdrawal biggest emission point, outside the kiln deposes the kiln tail mist and dust density is 60g/m3~80g/m3, this link pollutant ingredient is plex, except outside dust, mist and dust, but also has the sulphur dioxide, the nitrogen oxide pound, the fluoride and so on the noxious gas, but the dust is most serious to the air pollution.design standardExisting production line craft, operating mode and related technical data, document materialGuangdong Province Air pollutant Emissions Limiting value (DB44/272001)Industrial enterprise Designs Hygienic Standard (TJ3679)Cement industry Pollutant Emissions Standard (GB491585)The rotary kiln related technical parameter is as follows:Cement output: 4000 tons/days。設(shè)計(jì)依據(jù)標(biāo)準(zhǔn):現(xiàn)有生產(chǎn)線工藝、操作方式及其有關(guān)技術(shù)資料、文件資料;廣東省《大氣污染物排放限值》(DB44/272001)《工業(yè)企業(yè)設(shè)計(jì)衛(wèi)生標(biāo)準(zhǔn)》(TJ3679)《水泥工業(yè)污染物排放標(biāo)準(zhǔn)》(GB491585)回轉(zhuǎn)窯有關(guān)技術(shù)參數(shù)如下:水泥產(chǎn)量:4000噸/天;煙氣溫度:45~200℃;煙氣含塵濃度:5000~30000mg/Nm3;煙氣濕度:5%~15%。3) 選用的技術(shù)要先進(jìn)適用。 Haze humidity: 10%~20%design philosophy1) In the design must implement national earnestly the principles of national economy, the policy.2) Should consider the resources fully the full use.3) Selects the technology must be suitable advanced.4) The engineering design needs to persist safely reliable, the quality first principle.5) Persists the economical reasonable principle6) Must follow the country related environmental protection law, the laws and regulations, the reasonable development and uses each natural resource fully,Strict control environmental pollution, protection and improvement ecological environment7) The items of basic construction need to form a plete set the construction environmental protection facility, must simultaneously design with the principal part of a project, simultaneously construct, simultaneously goes into production the use.8) Must observe the pollutant emissions the national standards and the place standard.9) Must use the energy consumption material and energy consumption slightly in the items of basic construction, the pollutant has the quantity few clean production craft.Key word: Cement rotary kiln, haze, dust removal目錄1 概述 1 水泥工業(yè)污染及特征 1 水泥廠回轉(zhuǎn)窯粉塵污染治理 1 水泥廠基本情況 52 水泥廠回轉(zhuǎn)窯除塵設(shè)備的選擇 6 水泥廠回轉(zhuǎn)窯粉塵特點(diǎn)及煙氣條件 6 除塵器選用 6 除塵器的選擇要點(diǎn) 6 除塵器的選用原則 7 除塵器的選擇 83 脈沖布袋除塵器的選型計(jì)算和設(shè)計(jì) 11 11 11 11 脈沖布袋除塵器的選型計(jì)算 12 除塵系統(tǒng)初步設(shè)計(jì)方案 12 脈沖布袋除塵器相關(guān)技術(shù)及參數(shù)選擇 13 14 154 脈沖布袋除塵器的保溫與防腐 195 脈沖布袋除塵器的安裝、調(diào)試、維護(hù)和檢修 調(diào)試 20 216 土建設(shè)計(jì) 22 土建設(shè)計(jì)依據(jù)及原則 22 土建工程結(jié)構(gòu)類型設(shè)計(jì) 22 建構(gòu)筑物設(shè)計(jì)要點(diǎn) 22 總平面布置 227 電氣、儀器