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影響油脂精煉吸附脫色的因素有哪些油(you)(you)(you)(you)脂(zhi)(zhi)精(jing)(jing)煉過(guo)程中(zhong)脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)在(zai)于獲(huo)(huo)得油(you)(you)(you)(you)脂(zhi)(zhi)色(se)(se)(se)(se)澤(ze)的(de)(de)(de)(de)(de)改善(shan)和為(wei)油(you)(you)(you)(you)脂(zhi)(zhi)脫(tuo)(tuo)(tuo)(tuo)臭提供合(he)格(ge)的(de)(de)(de)(de)(de)原(yuan)料油(you)(you)(you)(you)品(pin)。因(yin)此,油(you)(you)(you)(you)脂(zhi)(zhi)精(jing)(jing)煉過(guo)程中(zhong)脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)油(you)(you)(you)(you)脂(zhi)(zhi)色(se)(se)(se)(se)度標準的(de)(de)(de)(de)(de)制訂,需要(yao)根(gen)(gen)據油(you)(you)(you)(you)脂(zhi)(zhi)以及其(qi)制品(pin)的(de)(de)(de)(de)(de)質(zhi)(zhi)量(liang)(liang)要(yao)求,以及力求在(zai)低的(de)(de)(de)(de)(de)損耗下獲(huo)(huo)得油(you)(you)(you)(you)色(se)(se)(se)(se)在(zai)大限度上的(de)(de)(de)(de)(de)改善(shan)為(wei)度。1,油(you)(you)(you)(you)的(de)(de)(de)(de)(de)品(pin)質(zhi)(zhi)以及前(qian)處理(li)油(you)(you)(you)(you)中(zhong)的(de)(de)(de)(de)(de)天然(ran)色(se)(se)(se)(se)素(su)(su)(su)較(jiao)易脫(tuo)(tuo)(tuo)(tuo)除,而(er)油(you)(you)(you)(you)料儲存(cun)和油(you)(you)(you)(you)脂(zhi)(zhi)生產過(guo)程中(zhong)形成(cheng)的(de)(de)(de)(de)(de)新生色(se)(se)(se)(se)素(su)(su)(su)或者(zhe)因(yin)為(wei)氧化而(er)固定了的(de)(de)(de)(de)(de)色(se)(se)(se)(se)素(su)(su)(su),一般(ban)比較(jiao)難(nan)脫(tuo)(tuo)(tuo)(tuo)除。由此可(ke)見,提高毛油(you)(you)(you)(you)質(zhi)(zhi)量(liang)(liang),避(bi)免油(you)(you)(you)(you)脂(zhi)(zhi)在(zai)加(jia)工環節中(zhong)的(de)(de)(de)(de)(de)氧化,才(cai)(cai)能確保(bao)脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)效(xiao)果(guo)。油(you)(you)(you)(you)脂(zhi)(zhi)精(jing)(jing)煉脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)前(qian)處理(li)的(de)(de)(de)(de)(de)油(you)(you)(you)(you)脂(zhi)(zhi)質(zhi)(zhi)量(liang)(liang)對脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)效(xiao)率的(de)(de)(de)(de)(de)影響也甚為(wei)重要(yao)。當待脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)油(you)(you)(you)(you)中(zhong)殘(can)留膠質(zhi)(zhi)、皂粒和懸浮物(wu)雜(za)質(zhi)(zhi)時(shi),這些(xie)雜(za)質(zhi)(zhi)會占據吸(xi)附(fu)劑(ji)(ji)的(de)(de)(de)(de)(de)一部分(fen)活(huo)化表面,從而(er)降低脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)效(xiao)率或者(zhe)增加(jia)吸(xi)附(fu)劑(ji)(ji)用(yong)(yong)(yong)量(liang)(liang)。2, 吸(xi)附(fu)劑(ji)(ji)的(de)(de)(de)(de)(de)質(zhi)(zhi)量(liang)(liang)和用(yong)(yong)(yong)量(liang)(liang)吸(xi)附(fu)劑(ji)(ji)是影響脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)效(xiao)果(guo)的(de)(de)(de)(de)(de)關鍵的(de)(de)(de)(de)(de)因(yin)素(su)(su)(su)。不同(tong)種類的(de)(de)(de)(de)(de)吸(xi)附(fu)劑(ji)(ji)具有各(ge)(ge)自(zi)的(de)(de)(de)(de)(de)特性(xing)(xing)(xing)(xing),根(gen)(gen)據油(you)(you)(you)(you)脂(zhi)(zhi)脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)的(de)(de)(de)(de)(de)具體(ti)要(yao)求,合(he)理(li)選擇吸(xi)附(fu)劑(ji)(ji),才(cai)(cai)能經濟地獲(huo)(huo)得脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)效(xiao)果(guo)。活(huo)性(xing)(xing)(xing)(xing)白土(tu)是油(you)(you)(you)(you)脂(zhi)(zhi)脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)常用(yong)(yong)(yong)的(de)(de)(de)(de)(de)吸(xi)附(fu)劑(ji)(ji)。不同(tong)規(gui)格(ge)的(de)(de)(de)(de)(de)活(huo)性(xing)(xing)(xing)(xing)白土(tu)所表現出的(de)(de)(de)(de)(de)性(xing)(xing)(xing)(xing)能各(ge)(ge)異。其(qi)活(huo)性(xing)(xing)(xing)(xing)度受到(dao)原(yuan)土(tu)、酸處理(li)、水分(fen)等(deng)因(yin)素(su)(su)(su)的(de)(de)(de)(de)(de)影響。在(zai)期望獲(huo)(huo)得高活(huo)性(xing)(xing)(xing)(xing)度的(de)(de)(de)(de)(de)同(tong)時(shi),還應(ying)該考慮到(dao)這些(xie)因(yin)素(su)(su)(su)對油(you)(you)(you)(you)品(pin)酸值、過(guo)濾速率以及油(you)(you)(you)(you)損率的(de)(de)(de)(de)(de)影響。某種油(you)(you)(you)(you)品(pin)在(zai)特定脫(tuo)(tuo)(tuo)(tuo)色(se)(se)(se)(se)條件下的(de)(de)(de)(de)(de)適活(huo)性(xing)(xing)(xing)(xing)白土(tu)以及添加(jia)量(liang)(liang)一般(ban)可(ke)通過(guo)實驗室小樣試驗加(jia)以優選。了解詳情 →2023-09-26
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軋胚機的保養與事故處理軋(ya)(ya)胚(pei)(pei)(pei)(pei)機(ji)(ji)(ji)是油(you)(you)廠的(de)(de)(de)(de)(de)(de)關鍵(jian)設備之一(yi),售價(jia)高(gao)、機(ji)(ji)(ji)體笨重(zhong)(zhong)、修(xiu)理費用(yong)高(gao)。所(suo)以在(zai)生產過程中(zhong),要(yao)(yao)(yao)精(jing)心保養(yang)以延長(chang)使(shi)(shi)用(yong)壽命,這對于增加(jia)(jia)(jia)效(xiao)益(yi)和(he)(he)降低成本等(deng)都有很重(zhong)(zhong)要(yao)(yao)(yao)的(de)(de)(de)(de)(de)(de)意義(yi)。軋(ya)(ya)胚(pei)(pei)(pei)(pei)機(ji)(ji)(ji)經過長(chang)期運(yun)轉,往(wang)往(wang)發生壓(ya)(ya)輥(gun)面兩邊(bian)磨(mo)損較為(wei)嚴重(zhong)(zhong)的(de)(de)(de)(de)(de)(de)現(xian)象,從而影(ying)響(xiang)軋(ya)(ya)胚(pei)(pei)(pei)(pei)效(xiao)果。所(suo)以每周都應該(gai)安排一(yi)定時(shi)(shi)間,用(yong)砂輪或(huo)者(zhe)其(qi)他辦法(fa)將軋(ya)(ya)輥(gun)兩邊(bian)部分磨(mo)一(yi)磨(mo)。如果對油(you)(you)料清(qing)雜不(bu)(bu)好,石頭、小鐵塊等(deng)雜質進(jin)入軋(ya)(ya)胚(pei)(pei)(pei)(pei)機(ji)(ji)(ji)內,往(wang)往(wang)造成輥(gun)面的(de)(de)(de)(de)(de)(de)點蝕,致使(shi)(shi)光(guang)滑(hua)(hua)的(de)(de)(de)(de)(de)(de)輥(gun)面出現(xian)凹坑,軋(ya)(ya)出的(de)(de)(de)(de)(de)(de)料胚(pei)(pei)(pei)(pei)厚薄不(bu)(bu)均,影(ying)響(xiang)出油(you)(you),這時(shi)(shi)就得(de)更換壓(ya)(ya)輥(gun),將有凹坑的(de)(de)(de)(de)(de)(de)壓(ya)(ya)輥(gun)重(zhong)(zhong)新車平。壓(ya)(ya)輥(gun)輥(gun)面積硬度增大,車削加(jia)(jia)(jia)工比較困難。軋(ya)(ya)胚(pei)(pei)(pei)(pei)機(ji)(ji)(ji)有時(shi)(shi)發生不(bu)(bu)吃料或(huo)者(zhe)吃料少的(de)(de)(de)(de)(de)(de)現(xian)象。會嚴重(zhong)(zhong)影(ying)響(xiang)軋(ya)(ya)胚(pei)(pei)(pei)(pei)機(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)效(xiao)率。軋(ya)(ya)胚(pei)(pei)(pei)(pei)機(ji)(ji)(ji)振(zhen)動大是引起(qi)壓(ya)(ya)輥(gun)不(bu)(bu)吃料的(de)(de)(de)(de)(de)(de)一(yi)個重(zhong)(zhong)要(yao)(yao)(yao)原(yuan)因(yin)。抖動的(de)(de)(de)(de)(de)(de)壓(ya)(ya)輥(gun),不(bu)(bu)斷(duan)地(di)給(gei)油(you)(you)料一(yi)個向上(shang)的(de)(de)(de)(de)(de)(de)力(li)(li),使(shi)(shi)得(de)油(you)(you)料被壓(ya)(ya)輥(gun)拋起(qi)、落下,始終在(zai)兩個壓(ya)(ya)輥(gun)之間跳上(shang)跳下。發生壓(ya)(ya)輥(gun)不(bu)(bu)吃料時(shi)(shi)候,應該(gai)找出原(yuan)因(yin),絕不(bu)(bu)能將光(guang)滑(hua)(hua)的(de)(de)(de)(de)(de)(de)輥(gun)面人為(wei)地(di)刨些坑,以此(ci)增加(jia)(jia)(jia)摩(mo)擦力(li)(li)而使(shi)(shi)之吃料。斷(duan)軸和(he)(he)掉輥(gun)邊(bian)。為(wei)了保證(zheng)軋(ya)(ya)胚(pei)(pei)(pei)(pei)的(de)(de)(de)(de)(de)(de)要(yao)(yao)(yao)求,在(zai)軋(ya)(ya)輥(gun)不(bu)(bu)平直度逐漸加(jia)(jia)(jia)大時(shi)(shi),就要(yao)(yao)(yao)增加(jia)(jia)(jia)彈簧壓(ya)(ya)力(li)(li)。這樣使(shi)(shi)軸承(cheng)處總是承(cheng)受一(yi)個徑向力(li)(li),一(yi)旦料流(liu)(liu)不(bu)(bu)均勻,特別是進(jin)入鐵器(qi)和(he)(he)石子(zi)等(deng)硬物,使(shi)(shi)兩個壓(ya)(ya)輥(gun)發生碰撞,這瞬(shun)時(shi)(shi)的(de)(de)(de)(de)(de)(de)沖擊(ji)力(li)(li)是相當大的(de)(de)(de)(de)(de)(de)。多次的(de)(de)(de)(de)(de)(de)沖擊(ji)的(de)(de)(de)(de)(de)(de)結果,超過軸的(de)(de)(de)(de)(de)(de)疲勞限度,就會發生斷(duan)軸或(huo)者(zhe)掉邊(bian)現(xian)象。所(suo)以應該(gai)強(qiang)調,操作時(shi)(shi)調節軋(ya)(ya)距(ju)的(de)(de)(de)(de)(de)(de)彈簧不(bu)(bu)要(yao)(yao)(yao)太緊,不(bu)(bu)要(yao)(yao)(yao)進(jin)入鐵器(qi),料流(liu)(liu)要(yao)(yao)(yao)均勻以及不(bu)(bu)要(yao)(yao)(yao)斷(duan)料等(deng),都是防止此(ci)類事故發生的(de)(de)(de)(de)(de)(de)有效(xiao)措施。了解詳情 →2023-09-26
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什么是層蝶式汽提塔?層(ceng)(ceng)(ceng)蝶(die)式(shi)(shi)汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)塔(ta)(ta)(ta)是(shi)(shi)國內(nei)(nei)(nei)浸出油(you)(you)(you)廠使(shi)用較(jiao)多(duo)的(de)(de)(de)(de)(de)(de)(de)一(yi)(yi)種汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)設(she)備。若按(an)照水蒸(zheng)(zheng)氣對混(hun)(hun)合(he)油(you)(you)(you)的(de)(de)(de)(de)(de)(de)(de)汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)次(ci)數(shu),層(ceng)(ceng)(ceng)蝶(die)式(shi)(shi)汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)塔(ta)(ta)(ta)可分(fen)為單段(duan)(duan)式(shi)(shi)和(he)(he)雙段(duan)(duan)式(shi)(shi)兩(liang)種。雙段(duan)(duan)蝶(die)式(shi)(shi)汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)塔(ta)(ta)(ta),它主要(yao)有(you)頂(ding)蓋(gai)、上(shang)塔(ta)(ta)(ta)體(ti)(ti)、中(zhong)(zhong)(zhong)塔(ta)(ta)(ta)體(ti)(ti)、下(xia)(xia)塔(ta)(ta)(ta)體(ti)(ti)以及底蓋(gai)所組(zu)(zu)成(cheng)。在(zai)(zai)上(shang)塔(ta)(ta)(ta)體(ti)(ti)和(he)(he)下(xia)(xia)塔(ta)(ta)(ta)體(ti)(ti)內(nei)(nei)(nei)各(ge)有(you)6-9組(zu)(zu)碟(die)(die)(die)(die)盤(pan)(pan)(pan)。每組(zu)(zu)碟(die)(die)(die)(die)盤(pan)(pan)(pan)都由滯流盤(pan)(pan)(pan)、錐形分(fen)配(pei)碟(die)(die)(die)(die)和(he)(he)環形分(fen)配(pei)碟(die)(die)(die)(die)組(zu)(zu)成(cheng)。上(shang)、下(xia)(xia)塔(ta)(ta)(ta)體(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)外(wai)殼均裝(zhuang)有(you)夾(jia)套(tao),在(zai)(zai)夾(jia)套(tao)中(zhong)(zhong)(zhong)通(tong)入(ru)(ru)343-441kPa的(de)(de)(de)(de)(de)(de)(de)加熱(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)對塔(ta)(ta)(ta)內(nei)(nei)(nei)的(de)(de)(de)(de)(de)(de)(de)混(hun)(hun)合(he)油(you)(you)(you)進(jin)(jin)行間接(jie)(jie)(jie)(jie)(jie)(jie)加熱(re)。中(zhong)(zhong)(zhong)塔(ta)(ta)(ta)體(ti)(ti)和(he)(he)底盤(pan)(pan)(pan)內(nei)(nei)(nei)各(ge)有(you)一(yi)(yi)組(zu)(zu)直接(jie)(jie)(jie)(jie)(jie)(jie)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)噴入(ru)(ru)裝(zhuang)置。這組(zu)(zu)裝(zhuang)置由集油(you)(you)(you)盤(pan)(pan)(pan)、導流管(guan)、中(zhong)(zhong)(zhong)心管(guan)、直接(jie)(jie)(jie)(jie)(jie)(jie)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)噴管(guan)組(zu)(zu)成(cheng)。來自(zi)第二蒸(zheng)(zheng)發(fa)器(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)混(hun)(hun)合(he)油(you)(you)(you),進(jin)(jin)入(ru)(ru)層(ceng)(ceng)(ceng)蝶(die)式(shi)(shi)汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)塔(ta)(ta)(ta)的(de)(de)(de)(de)(de)(de)(de)進(jin)(jin)油(you)(you)(you)管(guan)之后,自(zi)上(shang)而下(xia)(xia)逐次(ci)流經每一(yi)(yi)組(zu)(zu)碟(die)(die)(die)(die)盤(pan)(pan)(pan)。到(dao)達中(zhong)(zhong)(zhong)塔(ta)(ta)(ta)體(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)集油(you)(you)(you)盤(pan)(pan)(pan)底的(de)(de)(de)(de)(de)(de)(de)阻攔,被汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)出的(de)(de)(de)(de)(de)(de)(de)溶劑(ji)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)和(he)(he)水蒸(zheng)(zheng)氣繞過(guo)(guo)集油(you)(you)(you)盤(pan)(pan)(pan)向上(shang)移動,而油(you)(you)(you)被阻留(liu)落下(xia)(xia)。之后,混(hun)(hun)合(he)油(you)(you)(you)又沿著下(xia)(xia)塔(ta)(ta)(ta)體(ti)(ti)內(nei)(nei)(nei)的(de)(de)(de)(de)(de)(de)(de)各(ge)組(zu)(zu)碟(die)(die)(die)(die)盤(pan)(pan)(pan)逐次(ci)流下(xia)(xia),到(dao)達底蓋(gai)內(nei)(nei)(nei),在(zai)(zai)直接(jie)(jie)(jie)(jie)(jie)(jie)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)噴入(ru)(ru)裝(zhuang)置中(zhong)(zhong)(zhong)又一(yi)(yi)次(ci)被汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti),汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)出的(de)(de)(de)(de)(de)(de)(de)溶劑(ji)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)和(he)(he)水蒸(zheng)(zheng)氣自(zi)下(xia)(xia)而上(shang)逐級(ji)通(tong)過(guo)(guo)每一(yi)(yi)組(zu)(zu)碟(die)(die)(die)(die)盤(pan)(pan)(pan)的(de)(de)(de)(de)(de)(de)(de)空隙,與(yu)碟(die)(die)(die)(die)盤(pan)(pan)(pan)表面(mian)流下(xia)(xia)的(de)(de)(de)(de)(de)(de)(de)液膜(mo)狀混(hun)(hun)合(he)油(you)(you)(you)充分(fen)接(jie)(jie)(jie)(jie)(jie)(jie)觸,使(shi)混(hun)(hun)合(he)油(you)(you)(you)得到(dao)進(jin)(jin)一(yi)(yi)步汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)。到(dao)達頂(ding)部的(de)(de)(de)(de)(de)(de)(de)混(hun)(hun)合(he)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)通(tong)過(guo)(guo)出氣管(guan)進(jin)(jin)入(ru)(ru)汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)冷凝(ning)器(qi)(qi)。經汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)后的(de)(de)(de)(de)(de)(de)(de)浸出毛油(you)(you)(you)從(cong)底部的(de)(de)(de)(de)(de)(de)(de)出油(you)(you)(you)管(guan)通(tong)過(guo)(guo)液封裝(zhuang)置排(pai)出。層(ceng)(ceng)(ceng)蝶(die)式(shi)(shi)汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)塔(ta)(ta)(ta)結(jie)構較(jiao)為簡單,操作方(fang)便,工(gong)藝效果好(hao)(hao)。但是(shi)(shi)必須(xu)注意的(de)(de)(de)(de)(de)(de)(de):每一(yi)(yi)組(zu)(zu)碟(die)(die)(die)(die)盤(pan)(pan)(pan)的(de)(de)(de)(de)(de)(de)(de)制造(zao)質(zhi)量和(he)(he)是(shi)(shi)否(fou)水平安裝(zhuang),將影響(xiang)混(hun)(hun)合(he)油(you)(you)(you)液膜(mo)的(de)(de)(de)(de)(de)(de)(de)形成(cheng)與(yu)氣液相接(jie)(jie)(jie)(jie)(jie)(jie)觸的(de)(de)(de)(de)(de)(de)(de)面(mian)積;直接(jie)(jie)(jie)(jie)(jie)(jie)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)含水,會(hui)(hui)造(zao)成(cheng)毛油(you)(you)(you)中(zhong)(zhong)(zhong)磷脂的(de)(de)(de)(de)(de)(de)(de)析出;直接(jie)(jie)(jie)(jie)(jie)(jie)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)力過(guo)(guo)高或者用量過(guo)(guo)大,會(hui)(hui)形成(cheng)液泛(fan)現(xian)(xian)象;混(hun)(hun)合(he)油(you)(you)(you)中(zhong)(zhong)(zhong)含雜(za)太多(duo),則使(shi)汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)塔(ta)(ta)(ta)碟(die)(die)(die)(die)盤(pan)(pan)(pan)表面(mian)的(de)(de)(de)(de)(de)(de)(de)結(jie)垢現(xian)(xian)象嚴(yan)重,毛油(you)(you)(you)質(zhi)量降低;若采用多(duo)段(duan)(duan)式(shi)(shi),應使(shi)上(shang)層(ceng)(ceng)(ceng)直接(jie)(jie)(jie)(jie)(jie)(jie)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)壓(ya)力低于下(xia)(xia)層(ceng)(ceng)(ceng)。直接(jie)(jie)(jie)(jie)(jie)(jie)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)好(hao)(hao)采用低壓(ya)過(guo)(guo)熱(re)蒸(zheng)(zheng)汽(qi)(qi)(qi)(qi)。層(ceng)(ceng)(ceng)蝶(die)式(shi)(shi)汽(qi)(qi)(qi)(qi)提(ti)(ti)(ti)塔(ta)(ta)(ta)在(zai)(zai)檢修時(shi)碟(die)(die)(die)(die)盤(pan)(pan)(pan)的(de)(de)(de)(de)(de)(de)(de)清(qing)理比較(jiao)麻煩。了解詳情 →2019-03-05
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油脂精煉脫臭過程中有哪些損耗油(you)(you)脂(zhi)精煉(lian)脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)在(zai)(zai)(zai)任何情況下,蒸(zheng)(zheng)(zheng)餾(liu)引起的(de)(de)(de)(de)(de)損(sun)耗(hao)(hao)均取決于(yu)脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)時間、通(tong)氣(qi)速率、操(cao)(cao)作(zuo)壓力和(he)(he)溫度、油(you)(you)脂(zhi)中(zhong)(zhong)游離(li)(li)脂(zhi)肪(fang)酸和(he)(he)不(bu)皂化物的(de)(de)(de)(de)(de)含量(liang)(liang)以(yi)及甘(gan)油(you)(you)三脂(zhi)肪(fang)酸酯(zhi)的(de)(de)(de)(de)(de)組(zu)分(fen)等因(yin)素。在(zai)(zai)(zai)汽(qi)提脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)過(guo)程中(zhong)(zhong),有相當數(shu)量(liang)(liang)的(de)(de)(de)(de)(de)油(you)(you)脂(zhi)是(shi)由于(yu)飛濺(jian)(jian)在(zai)(zai)(zai)汽(qi)提蒸(zheng)(zheng)(zheng)汽(qi)中(zhong)(zhong)而損(sun)失的(de)(de)(de)(de)(de)。因(yin)此(ci),脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)總損(sun)耗(hao)(hao)包(bao)括(kuo)(kuo)蒸(zheng)(zheng)(zheng)餾(liu)損(sun)耗(hao)(hao)和(he)(he)飛濺(jian)(jian)損(sun)耗(hao)(hao)。不(bu)同的(de)(de)(de)(de)(de)油(you)(you)脂(zhi)、設備(bei)以(yi)及不(bu)同的(de)(de)(de)(de)(de)操(cao)(cao)作(zuo)條件,其(qi)脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)總損(sun)耗(hao)(hao)是(shi)不(bu)盡一致(zhi)的(de)(de)(de)(de)(de)。汽(qi)提脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)過(guo)程中(zhong)(zhong),低分(fen)子的(de)(de)(de)(de)(de)醛類(lei)、酮類(lei)以(yi)及游離(li)(li)脂(zhi)肪(fang)酸容易蒸(zheng)(zheng)(zheng)餾(liu)出(chu)來(lai),隨著(zhu)脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)過(guo)程的(de)(de)(de)(de)(de)加深(shen),油(you)(you)脂(zhi)內(nei)原(yuan)有的(de)(de)(de)(de)(de)游離(li)(li)脂(zhi)肪(fang)酸經(jing)過(guo)脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)后幾乎完全被(bei)除(chu)去,因(yin)此(ci)蒸(zheng)(zheng)(zheng)餾(liu)損(sun)耗(hao)(hao)硬包(bao)括(kuo)(kuo)油(you)(you)脂(zhi)脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)前的(de)(de)(de)(de)(de)游離(li)(li)脂(zhi)肪(fang)酸的(de)(de)(de)(de)(de)含量(liang)(liang)。此(ci)外,根據(ju)反應(ying)方(fang)程可(ke)知,汽(qi)提蒸(zheng)(zheng)(zheng)汽(qi)不(bu)可(ke)避免(mian)地要引起部(bu)分(fen)油(you)(you)脂(zhi)的(de)(de)(de)(de)(de)水解(jie),因(yin)油(you)(you)脂(zhi)水解(jie)所生成(cheng)的(de)(de)(de)(de)(de)這部(bu)分(fen)脂(zhi)肪(fang)酸,也構(gou)(gou)成(cheng)了蒸(zheng)(zheng)(zheng)餾(liu)損(sun)耗(hao)(hao)。根據(ju)經(jing)驗,當游離(li)(li)脂(zhi)肪(fang)酸含量(liang)(liang)降低至0.015%-0.03%時,游離(li)(li)脂(zhi)肪(fang)酸的(de)(de)(de)(de)(de)脫(tuo)(tuo)(tuo)(tuo)除(chu)速率與裂解(jie)生成(cheng)的(de)(de)(de)(de)(de)速率即達到平(ping)衡。蒸(zheng)(zheng)(zheng)餾(liu)損(sun)耗(hao)(hao)還(huan)包(bao)括(kuo)(kuo)油(you)(you)脂(zhi)中(zhong)(zhong)存在(zai)(zai)(zai)的(de)(de)(de)(de)(de)甾醇和(he)(he)其(qi)他不(bu)皂化物,盡管這部(bu)分(fen)物質較游離(li)(li)脂(zhi)肪(fang)酸難于(yu)揮發,但是(shi)在(zai)(zai)(zai)脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)餾(liu)出(chu)物卻占有一定的(de)(de)(de)(de)(de)比例,它們構(gou)(gou)成(cheng)的(de)(de)(de)(de)(de)蒸(zheng)(zheng)(zheng)餾(liu)損(sun)耗(hao)(hao)取決于(yu)脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)操(cao)(cao)作(zuo)條件。以(yi)大豆油(you)(you)為(wei)例,在(zai)(zai)(zai)較高的(de)(de)(de)(de)(de)脫(tuo)(tuo)(tuo)(tuo)臭(chou)(chou)(chou)(chou)溫度下,甾醇及不(bu)皂化物蒸(zheng)(zheng)(zheng)餾(liu)脫(tuo)(tuo)(tuo)(tuo)除(chu)率約為(wei)60%,而在(zai)(zai)(zai)一般操(cao)(cao)作(zuo)條件下脫(tuo)(tuo)(tuo)(tuo)出(chu)率較低。了解詳情 →2019-03-05
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油脂加工廠衛生要求油脂加(jia)工(gong)(gong)廠(chang)(chang)的(de)安(an)(an)全(quan)衛生(sheng)(sheng)要(yao)(yao)(yao)求是油脂在“原(yuan)料—加(jia)工(gong)(gong)—成品(pin)—包裝(zhuang)—儲運(yun)—市場(chang)“的(de)全(quan)流(liu)程中(zhong),物(wu)料自始至終(zhong)處于(yu)安(an)(an)全(quan)衛生(sheng)(sheng)和(he)不(bu)被污(wu)染的(de)環境(jing)之中(zhong),油廠(chang)(chang)設計是在油脂加(jia)工(gong)(gong)中(zhong)對(dui)安(an)(an)全(quan)衛生(sheng)(sheng)至關重要(yao)(yao)(yao)的(de)保(bao)障,所以設計中(zhong)必須要(yao)(yao)(yao)對(dui)環境(jing)、生(sheng)(sheng)產設施、加(jia)工(gong)(gong)工(gong)(gong)藝以及過程、檢驗設備(bei)、貯(zhu)運(yun)過程等要(yao)(yao)(yao)求條(tiao)件(jian)按(an)照油脂法令(ling)、規范執行。1,廠(chang)(chang)區環境(jing) 油廠(chang)(chang)廠(chang)(chang)址要(yao)(yao)(yao)選擇地勢干燥(zao)、交通方便(bian)、有充(chong)(chong)足水源(yuan)的(de)地區,廠(chang)(chang)區周圍不(bu)得有污(wu)染源(yuan),要(yao)(yao)(yao)遠離有害(hai)場(chang)所。廠(chang)(chang)區環境(jing)要(yao)(yao)(yao)衛生(sheng)(sheng)清潔,物(wu)品(pin)堆放整齊,加(jia)工(gong)(gong)后(hou)廢棄物(wu)存(cun)放要(yao)(yao)(yao)遠離生(sheng)(sheng)產車(che)間(jian),且不(bu)得位于(yu)車(che)間(jian)上(shang)風向。2,車(che)間(jian)環境(jing) 車(che)間(jian)應(ying)保(bao)持整潔,場(chang)地應(ying)堅硬、平坦(tan),排水、通風良好。車(che)間(jian)應(ying)有充(chong)(chong)足的(de)空間(jian),便(bian)于(yu)設備(bei)安(an)(an)裝(zhuang)、維護、物(wu)料儲存(cun)運(yun)輸、衛生(sheng)(sheng)清理(li)人員通行。如場(chang)地要(yao)(yao)(yao)易于(yu)清洗(xi)消(xiao)(xiao)毒、防(fang)霉、防(fang)腐(fu),要(yao)(yao)(yao)具備(bei)消(xiao)(xiao)毒、防(fang)蠅、防(fang)鼠、更衣、洗(xi)滌污(wu)水排放、存(cun)放廢棄物(wu)的(de)設施。車(che)間(jian)環境(jing)溫度、濕(shi)度、通風條(tiao)件(jian)應(ying)該(gai)滿足生(sheng)(sheng)產工(gong)(gong)藝和(he)規程要(yao)(yao)(yao)求。了解詳情 →2019-03-05
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國務院機構改革:組建國家糧食和物資儲備局3月(yue)13日,十三屆全國(guo)(guo)人大一(yi)次會議召開第四次全體會議,聽取國(guo)(guo)務(wu)(wu)(wu)委(wei)員王勇關于國(guo)(guo)務(wu)(wu)(wu)院機構改(gai)革方案(an)的(de)說明(ming)。該方案(an)顯示,將國(guo)(guo)家糧食(shi)局的(de)職(zhi)(zhi)責,國(guo)(guo)家發展和(he)(he)改(gai)革委(wei)員會的(de)組(zu)織實施國(guo)(guo)家戰略(lve)物資收(shou)儲、輪換和(he)(he)管(guan)(guan)理,管(guan)(guan)理國(guo)(guo)家糧食(shi)、棉花和(he)(he)食(shi)糖儲備等職(zhi)(zhi)責,以及(ji)民政部(bu)、商務(wu)(wu)(wu)部(bu)、國(guo)(guo)家能(neng)源局等部(bu)門的(de)組(zu)織實施戰略(lve)和(he)(he)應急儲備物資收(shou)儲、輪換和(he)(he)日常管(guan)(guan)理職(zhi)(zhi)責整合,組(zu)建(jian)國(guo)(guo)家糧食(shi)和(he)(he)物資儲備局,由國(guo)(guo)家發展和(he)(he)改(gai)革委(wei)員會管(guan)(guan)理。了解詳情 →2019-03-05
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糧食輸送機電機的選擇電(dian)(dian)(dian)機(ji)(ji)在(zai)糧(liang)(liang)食輸(shu)送(song)(song)機(ji)(ji)中(zhong)可以稱得上是(shi)一個(ge)(ge)非常重(zhong)要的(de)(de)(de)(de)(de)部件(jian),它是(shi)帶(dai)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)整個(ge)(ge)糧(liang)(liang)食輸(shu)送(song)(song)機(ji)(ji)運(yun)轉的(de)(de)(de)(de)(de)關(guan)鍵。因(yin)此(ci)選擇好電(dian)(dian)(dian)機(ji)(ji)對糧(liang)(liang)食輸(shu)送(song)(song)機(ji)(ji)來說是(shi)至(zhi)關(guan)重(zhong)要的(de)(de)(de)(de)(de)。不只(zhi)是(shi)因(yin)為(wei)其自身的(de)(de)(de)(de)(de)正(zheng)常運(yun)轉有(you)必要還(huan)因(yin)為(wei)糧(liang)(liang)食輸(shu)送(song)(song)機(ji)(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)機(ji)(ji)能(neng)否正(zheng)常工作(zuo)關(guan)系(xi)著整個(ge)(ge)糧(liang)(liang)食輸(shu)送(song)(song)機(ji)(ji)的(de)(de)(de)(de)(de)正(zheng)常運(yun)轉和(he)工作(zuo)效率。電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)作(zuo)為(wei)糧(liang)(liang)食輸(shu)送(song)(song)機(ji)(ji)的(de)(de)(de)(de)(de)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)裝(zhuang)(zhuang)置,在(zai)選用(yong)的(de)(de)(de)(de)(de)時(shi)候(hou)盡量選用(yong)有(you)短(duan)路(lu)(lu)裝(zhuang)(zhuang)置的(de)(de)(de)(de)(de)電(dian)(dian)(dian)機(ji)(ji),這樣(yang)做的(de)(de)(de)(de)(de)原(yuan)因(yin)是(shi)因(yin)為(wei)有(you)短(duan)路(lu)(lu)裝(zhuang)(zhuang)置的(de)(de)(de)(de)(de)電(dian)(dian)(dian)機(ji)(ji)有(you)一定(ding)(ding)(ding)的(de)(de)(de)(de)(de)保(bao)(bao)護(hu)(hu)(hu)裝(zhuang)(zhuang)置,主(zhu)要體(ti)現(xian)在(zai)以下幾點。1、短(duan)路(lu)(lu)保(bao)(bao)護(hu)(hu)(hu)宜(yi)采用(yong)熔(rong)(rong)斷(duan)器(qi)(qi)(qi)或低(di)壓(ya)斷(duan)路(lu)(lu)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)瞬動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)過電(dian)(dian)(dian)流(liu)(liu)(liu)脫扣器(qi)(qi)(qi),也(ye)可采用(yong)瞬動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)元(yuan)件(jian)的(de)(de)(de)(de)(de)過電(dian)(dian)(dian)流(liu)(liu)(liu)繼(ji)(ji)電(dian)(dian)(dian)器(qi)(qi)(qi)。熔(rong)(rong)斷(duan)器(qi)(qi)(qi)至(zhi)少(shao)在(zai)兩(liang)相上裝(zhuang)(zhuang)設。2、熔(rong)(rong)斷(duan)器(qi)(qi)(qi)熔(rong)(rong)斷(duan)體(ti)的(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu)應(ying)大于電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)的(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu),且(qie)其安秒特性曲線(xian)計算(suan)偏差后,略高于電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)流(liu)(liu)(liu)和(he)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)時(shi)間(jian)的(de)(de)(de)(de)(de)交點。如(ru)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)頻(pin)繁,熔(rong)(rong)斷(duan)體(ti)的(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu)再加大1~2級。瞬時(shi)電(dian)(dian)(dian)流(liu)(liu)(liu)脫扣器(qi)(qi)(qi)或過電(dian)(dian)(dian)流(liu)(liu)(liu)繼(ji)(ji)電(dian)(dian)(dian)器(qi)(qi)(qi)瞬動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)元(yuan)件(jian)的(de)(de)(de)(de)(de)整定(ding)(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu),應(ying)取電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)2~2.5倍。3、熱(re)繼(ji)(ji)電(dian)(dian)(dian)器(qi)(qi)(qi)或過載(zai)脫扣器(qi)(qi)(qi)的(de)(de)(de)(de)(de)整定(ding)(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu),不小于電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)額(e)(e)定(ding)(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu),其值應(ying)接近額(e)(e)定(ding)(ding)(ding)值。控(kong)制(zhi)電(dian)(dian)(dian)器(qi)(qi)(qi)宜(yi)采用(yong)接觸器(qi)(qi)(qi)、啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)器(qi)(qi)(qi)或專用(yong)開關(guan),一組(zu)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)可共(gong)用(yong)一套(tao)(tao)(tao)控(kong)制(zhi)電(dian)(dian)(dian)器(qi)(qi)(qi),控(kong)制(zhi)電(dian)(dian)(dian)器(qi)(qi)(qi)應(ying)能(neng)接通(tong)和(he)斷(duan)開電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)的(de)(de)(de)(de)(de)堵(du)轉電(dian)(dian)(dian)流(liu)(liu)(liu)。4、連續運(yun)行(xing)的(de)(de)(de)(de)(de)帶(dai)式(shi)輸(shu)送(song)(song)機(ji)(ji),采用(yong)熔(rong)(rong)斷(duan)器(qi)(qi)(qi)保(bao)(bao)護(hu)(hu)(hu)或短(duan)路(lu)(lu)器(qi)(qi)(qi)保(bao)(bao)護(hu)(hu)(hu),宜(yi)裝(zhuang)(zhuang)設斷(duan)相熱(re)繼(ji)(ji)電(dian)(dian)(dian)器(qi)(qi)(qi)保(bao)(bao)護(hu)(hu)(hu)或溫度保(bao)(bao)護(hu)(hu)(hu)。低(di)壓(ya)保(bao)(bao)護(hu)(hu)(hu)器(qi)(qi)(qi)宜(yi)采用(yong)低(di)壓(ya)斷(duan)路(lu)(lu)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)欠電(dian)(dian)(dian)壓(ya)脫扣器(qi)(qi)(qi)或接觸器(qi)(qi)(qi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)磁線(xian)圈,其控(kong)制(zhi)回路(lu)(lu)宜(yi)采用(yong)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)主(zhu)回路(lu)(lu)供電(dian)(dian)(dian)。電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)及其控(kong)制(zhi)電(dian)(dian)(dian)器(qi)(qi)(qi)宜(yi)共(gong)用(yong)一套(tao)(tao)(tao)隔(ge)離器(qi)(qi)(qi)。5、低(di)壓(ya)交流(liu)(liu)(liu)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)的(de)(de)(de)(de)(de)回路(lu)(lu)上應(ying)在(zai)每臺(tai)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)上裝(zhuang)(zhuang)隔(ge)離電(dian)(dian)(dian)器(qi)(qi)(qi),或共(gong)用(yong)一套(tao)(tao)(tao)短(duan)路(lu)(lu)保(bao)(bao)護(hu)(hu)(hu)的(de)(de)(de)(de)(de)一組(zu)電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)共(gong)用(yong)一套(tao)(tao)(tao)隔(ge)離電(dian)(dian)(dian)器(qi)(qi)(qi)。電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)主(zhu)回路(lu)(lu)導線(xian)的(de)(de)(de)(de)(de)載(zai)流(liu)(liu)(liu)量不應(ying)小于電(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)的(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)(ding)電(dian)(dian)(dian)流(liu)(liu)(liu),并(bing)對其機(ji)(ji)械強度、電(dian)(dian)(dian)壓(ya)和(he)在(zai)短(duan)路(lu)(lu)條件(jian)的(de)(de)(de)(de)(de)熱(re)穩定(ding)(ding)(ding)性進行(xing)校驗(yan)。了解詳情 →2019-03-05