It was founded that the flux increases as the feed temperature , concentration and flow rate increase , and increases as the downstream pressure decreases . the separation factor increases as the feed flow rate and downstream pressure increase , and decreases as the feed temperature increases 由試驗結(jié)果表明,溫度升高,增大料液濃度,降低冷側(cè)壓力,以及增加料液流速,膜蒸餾通量增大;同時流速提高,溫度降低,以及增大冷側(cè)壓力,分離因子增大。
Aiming at the condition of low production and low efficiency of the oil wells in the special low permeability reservoirs in the process of water flooding , such as the poor capability of feed flow , the rapid increase of water production and decrease of productivity , we choose the surfactant producing bacteria for lab experiment first and then for field experiment 摘要針對特低滲透油藏注水開發(fā)過程中呈現(xiàn)出的油井產(chǎn)水快速上升、產(chǎn)能下降、供液能力差、低產(chǎn)低效的局面,選用自制的以微生物表面活性劑為主的菌液,在室內(nèi)進行了實驗,并推入礦場進行試驗。
The result shows that the heat transfer coefficient within the hollow fiber module with laminar flow can be calculated based on the correlation . by analyzing the equation , it was founded that the heat transfer coefficient under laminar flow is almost independent of the feed flow rate . numerical simulation of temperature distribution in hollow fiber membrane module with laminar flow was carried out 首先采用純水為研究體系,研究分析了中空纖維管內(nèi)的傳熱系數(shù),研究表明,纖維管內(nèi)的流動屬于層流狀態(tài),其邊界層傳熱系數(shù)可用關(guān)聯(lián)式來計算,由此式看出,層流狀態(tài)下,流速對傳熱系數(shù)的影響很小。
In this paper . flow properties of multistage fluidized - bed bioreactor with external circulation at a pilot scale is studied . according to characteristic analysis , the model of completely mixing reactor in series is introduced to characterize real reactor as a theoretical model . on the basis of analog computing analysis and discussion of theoretical model . by means of pulse tracer method , experiments on residence time distribution ( rtd ) have been done in different conditions including the change of tracer level , feeding flow rate and circulation flow rate . the result shows when the ratio of circulation flow rate and feeding flow rate amounts to at least 4 , the flow properties of multistage fluidized - bed bioreactor with external circulation at a pilot scale is very close to the model of completely mixing reactor in series . an amendatory model has been established by the regression method 作者首先在對反應(yīng)器進行特征分析的基礎(chǔ)上,建立了描述中試規(guī)模多級外循環(huán)流化床生物反應(yīng)器流動特性的串級全混流模型,并對理論模型進行了模擬計算分析和討論,在此基礎(chǔ)上,作者分別在無循環(huán)和有循環(huán)(改變示蹤劑用量、流加流量和循環(huán)流量)的條件下,利用脈沖示蹤法對一到五級串聯(lián)外循環(huán)流化床反應(yīng)器進行了停留時間分布實驗,結(jié)果表明,在循環(huán)流量與流加流量的比值達到大于等于4時,中試規(guī)模多級外循環(huán)流化床反應(yīng)器的流動特性接近串級全混流模型,通過數(shù)據(jù)回歸擬合的方法,建立了中試規(guī)模一到五級串聯(lián)外循環(huán)流化床反應(yīng)器的流動模型。
feed: vt. 1.給…飲食,給…東西吃;給(嬰兒)喂奶。 2. ...flow: vi. 1.流,流動。 2.(血液等)流通,循環(huán)。 3. ...adjustable pipe for feed flow: 送料調(diào)節(jié)管auxiliary feed-water flow: 輔助給水流量emergency feed-water flow: 應(yīng)急給水流量feed flow adjustment: 飼料流送量調(diào)節(jié)feed flow pressure gauge: 進料流量調(diào)節(jié)閥feed flow regulator: 喂送量調(diào)節(jié)器feed stock flow: 料流process flow diagram for feed: 鍋爐房給水系統(tǒng)工藝流程圖reverse flow feed conveyor: 逆流式布料皮帶機steam and feed flow diagram: 汽水流程圖parallel feed cross-flow refiner: 平行加料縱橫流動區(qū)域精煉爐end feed cross flow zone refiner: 側(cè)端加料縱橫流動區(qū)域精煉爐end-feed cross-flow zone refiner: 側(cè)端加料縱橫流動區(qū)域精煉爐; 端部加料縱橫流動區(qū)域精煉爐a feed in: 進be on the feed: 魚在找吃feed: feed1 fee 的過去式及過去分詞。 vt. 1.給…飲食,給…東西吃;給(嬰兒)喂奶。 2.喂養(yǎng),飼養(yǎng),使吃草,放牧(家畜),用…作牧場 (down). 3.(機器、煤爐等)加上(油、煤等) (with) 【物理學(xué)】饋給(信號);通過線路向電臺傳送(節(jié)目)以供廣播。 4.悅(目),娛(耳);滿足(欲望等);(用希望)安慰,使高興 (with)。 5.〔口語〕給(演員)提臺詞。 6.(足球)傳(球)。 7.培養(yǎng),增長,煽動(某種情緒)。 F- a cold and starve a fever. 〔諺語〕受寒要吃,發(fā)燒要餓。 feed wheat to cattle = feed cattle with wheat 用小麥喂牛。 feed down the grassy land 把(牛)放進草地吃草。 feed the fire with fuel 給火加燃料。 be well fed 吃得好[差]。 better fed than taught 養(yǎng)而不教。 Well fed, well bred. 吃得飽,懂禮貌[衣食足而后禮義興]。 be fed up with 〔美俚〕吃…吃得過飽;厭倦 (I'm fed up with your grumbling. 我對你的牢騷已經(jīng)聽厭了)。 feed oneself 自己吃。 feed one's face 〔美俚〕吃飯。 feed out 催肥。 feed the flame of jealousy [anger] 使更加嫉妒[憤怒]。 feed to market 養(yǎng)肥出售。 feed up 供給食物[營養(yǎng)];養(yǎng)肥;使吃飽。 feed with the money 賄賂。 vi. 1.吃飯,進餐;吃東西,靠…生活,用…做食料;流入,進入。 2.【物理學(xué)】饋入。 What time do we feed 我們什么時候開飯? He feeds on hope. 他靠希望支撐著生活。 feed at the high table = feed high. feed at the public trough 〔美國〕吃公家飯,尸位素餐。 feed high [well] 吃得好。 feed on 吃…過日子;用…喂養(yǎng)(鳥獸等) (feed on grass 靠吃草生活。 feed on hope 寄托于希望)。 n. 1.喂養(yǎng),飼養(yǎng)。 2.飼料,飼草,草料;〔口語〕飯食,吃飯。 3.【機械工程】進刀;傳送,送料,上料,加水;饋電,供電;【機械工程】送料管,運料槽。 4.〔英口〕【戲劇】提臺詞〔特指提供給喜劇演員的笑料〕。 5.〔口語〕一餐,豐盛的一餐。 feed for horses 馬料。 a feed of oats 燕麥的一次喂用量。 have a feed 吃飼料。 have a good feed 吃一頓豐盛的宴席。 automatic feed 【機械工程】自動進刀,自動進給。 clockwork feed 鐘表的發(fā)條。 cylinder feed 氣缸進氣。 hydraulic feed 【機械工程】水力進給,水力進刀,液壓輸送。 jump feed 【機械工程】(仿形切削的)快速越程,中間越程。 shunt feed 【電學(xué)】關(guān)聯(lián)饋電。 tape feed 磁帶卷盤。 work feed 【機械工程】工件進程。 at one feed 一頓。 be off one's feed 胃口不好。 be on the feed (魚)在找吃,正吃著。 be out at feed (牛等)在牧場上吃著草。 feed in: 插入; 饋入/進給的/進料的; 輸入,進(料); 輸入,進(料)feed on: 喂養(yǎng),飼養(yǎng); 以…為生; 以...為食, 以...為能源; 以…為食;靠…而生活; 以…為食物(能源); 以吃…為主; 用……喂養(yǎng)feed to: 供應(yīng)給feed with: 加上; 維持生活靠; 向……供給; 用…喂feed … into: 把……供給; 把……饋人; 把……送人feed-in: n. 【電學(xué)】饋入。 2.n. 施食(集會)。 3.adj. 【機械工程】進給的,進料的。 feed…on: 給(人或物)食物; 給食物; 用……喂養(yǎng)