Yuav ua li cas nrog cov pa hauv cov pa tawm ntawm lub fume hood, nram qab no yog txoj kev kho cov nkev organic nkev.
Kev kho cov dej khib nyiab yog hais txog kev tshem tawm cov khoom pov tseg cov khoom pov tseg cov organic los ntawm kev siv ntau yam kev ntsuas los txo cov roj poob, txo cov siv cov organic kua tshuaj, lossis ntxuav cov pa roj pa los ntawm ntau yam. Organic cov khib nyiab roj tau faib tawm ntau. Yuav kom tiv thaiv kom txhob muaj kuab paug, ntxiv rau kev txo cov roj poob, txo cov nqi ntawm cov organic solvents uas siv los txo cov tiam thiab kev tso tawm ntawm cov pov tseg cov organic, cov pa ntxuav kom huv yog ib qho kev coj ua thiab siv tau rau kev tswj hwm. Kev siv ntau hom yog adsorption, kev nqus, kev sib txuas ntawm catalytic, thermal combustion thiab hais txog. Thaum xaiv txoj kev huv, lub nroog yuav tsum xaiv txoj kev pheej yig, txo qis zog, thiab tsis muaj kev paug siab raws li lub sijhawm tshwj xeeb, thiab sim ua kom ntau npaum li qhov ua tau kom raug mob, thiab siv tag nrho cov khoom siv rov qab cov khoom thiab khib nyiab. Feem ntau, kev lag luam petrochemical txais txoj kev xws li kev sib txuas, kev nqus, thiab kev sib txuas ncaj qha vim kev siv roj gas ntau; nyob rau hauv kev tsim xim thiab luam ntawv lag luam, adsorption thiab catalytic combustion txoj kev siv los ntawm kev qis roj cua ntau.
Kev tswj kav
Txoj kev rov qab ua kom rov qab tsim dua: Cov khoom siv ua pov tseg rau hauv av yog ncaj qha mus rau hauv cov condenser thiab cov adsorbed, absorbed, decomposed thiab sib cais kom rov zoo cov khoom tseem ceeb. Cov txheej txheem yog siv rau cov kev mob ntawm cov khoom siv roj cov pa, cov kub tsawg, thiab cov cua me me. Cov khoom siv tub yees yog siv rau cov kws tshuaj thiab cov khoom lag luam, thiab cov tuam txhab luam ntawv tsis tshua siv.
Txoj kev nqus: feem ntau yog siv lub cev nqus dej, uas yog, cov pa roj pa yog nkag mus rau hauv cov kua dej ua kua kom huv si; tom qab cov kua nqus dej lawm, nws yuav rhaub, soj ntsuam thiab ua kom zoo thiab zoo tu qab; qhov no yog siv rau cov pa cua atmospheric, tsis tshua muaj qhov kub, tsis muaj concentration gas, tab sis yuav tsum tau nruab nrog cua sov Analytical rov qab ntaus khoom, cov khoom siv loj, kev peev txheej siab.
Cov pa roj carbon dioxide yog feem ntau yog siv tau: Cov roj ntsha cua ntawm cov pa roj carbon atom, thaum twg cov adsorption ntxaws, cov pa roj carbon lim dej ua kom rov ua haujlwm dua, cov pa roj tua kab yog cua tshuab tua tom qab, hloov mus rau cov khoom tsis zoo, txuas ntxiv rau cov roj av. Thaum cov activated carbon yog regenerated rau ib tug xov tooj ntawm cov sij hawm, lub peev xwm adsorption yog ho poob, thiab nws yog tsim nyog los tsim dua tshiab lossis txuas hnub nyoog rau cov activated carbon.
Cov pa roj carbon dioxide yog cov qauv siv los kho cov dej khib nyiab. Nws muaj kev qhia zoo rau adsorption rau benzene nkev roj, tab sis nws muaj adsorption phem rau cov roj khib nyiab roj. Lub ntsiab tseem ceeb yog tias qhov kev khiav hauj lwm tus nqi yog siab thiab nws tsis haum rau cheeb tsam nrog high humidity. Txawm li cas los xij, rau daim ntawv thov kev lag luam tam sim no, kev siv cov adsorption activated yog feem ntau siv. Cov pa roj carbon tsawg siv: feem ntau ua kom cov pa roj carbon atom thiab activated carbon fiber, kev siv cov xim ua kom cov pa roj carbon dioxide yog pheej yig, tiam sis cov nyhuv dua ntxiv, piv rau kev siv cov roj carbon fiber ntau dua, cov nyhuv zoo dua.
Organic roj tshwj xeeb activated carbon
A. Loj tshwj xeeb ntawm thaj chaw, qhov zoo tshaj tawm adsorption. Txij li ntawm thaj tsam ntawm activated carbon ntawm tib lub luj yog ze li kaum lub sij hawm ntawm cov roj co tshuab, cov luj ntawm activated carbon uas yuav tsum tau muaj yog muaj tsawg, tab sis cov adsorption efficiency yog siab heev. Raws li qhov sib txawv hauv cov pa roj thiab lwm yam khoom siv ntawm cov pa nkev, adsorption Tus nqi ntawm 85% thiab 98%, thiab cov txheej txheem ntau theem adsorption tuaj yeem ncav cuag 99.99%, uas yog siab tshaj qhov tshaj tawm adsorption tus nqi ntawm 88% rau qhov dog dig activated carbon particle adsorption txoj kev, thiab lub ntim thiab tag nrho cov luj tseem heev me me.
B. Cov cwj pwm tsis sib thooj thiab cov cwj pwm tsis zoo yog luv thiab ceev; Desorption thiab kev tsim rov qab muaj tsawg zog. Lub peev xwm adsorption ntawm cov pa roj carbon dioxide yog ua rau ntau tus mus rau ntau lub sij hawm ntau dua qhov uas muaj ntau hom activated carbon (GAC), thiab nws kuj muaj qhov muaj peev xwm tawm tswv yim zoo rau cov pa roj carbon monoxide, thiab muaj peev xwm tuav lub siab tawm adsorption desorption rate thiab ntev kev pab cuam lub neej. Yog tias nws muaj cua kub rau 10-30 feeb, nws yuav ua kom tiav, nrog rau cov cua kub ua haujlwm tsis zoo, siab kub saum toj no 1000 ° C hauv qhov roj, thiab tiv thaiv taw rau saum toj 450 tawm C hauv pa.
C. Txawv kev hloov thiab yooj yim siv. Columnar, spherical particles, yooj yim los hloov, yuav tsis ua kom muaj kev puas tsuaj rau tib neeg lub cev.
D. Raws li qhov xav tau los tsim tshwj xeeb activated carbon nrog cov khoom tshwj xeeb; zoo zog, yuav tsis ua rau qis qis dua.
ncaj qha combustion method: kev siv cov roj siv roj los yog roj thiab lwm cov roj hlawv hluav taws xob, cov roj tov ua kom sov, kom cov khoom tsim teeb meem hauv cov ntshav siab kub mus rau cov khoom tsis huv; qhov no yog qhov yooj yim, tsawg peev, tsim kom muaj cov concentration siab, me me ntawm cua pa, tab sis kev ruaj ntseg technology thiab kev ua haujlwm ua haujlwm muaj siab.
Catalytic combustion txoj kev: Cov pa roj tso pa tawm los ntawm catalytic combustion kom hloov mus ua kev tsis zoo thiab ntxhiab carbon dioxide thiab dej; txoj kev no muaj hluav taws kub tsawg, hluav taws xob txuag, siab kom huv, khiav lag luam, me me, thiab peev nyiaj txiag ua lag luam. Thaum siab kub los yog siab concentration ntawm cov organic khib nyiab roj.
adsorption txoj kev:
(1) Txoj kev ncaj qha adsorption: Tom qab cov organic nkev roj yog adsorbed ntawm cov activated carbon, tus nqi yuav tuaj yeem siab tshaj 95%. Cov cuab yeej siv yooj yim thiab cov peev yog me me. Txawm li cas los xij, cov activated carbon tau hloov ntau zaus, thiab cov txheej txheem ua haujlwm xws li chaw thau khoom thiab tshem tawm, kev thauj mus los, thiab hloov yog nce, ua rau muaj kev nce nqi zog.
(2) Cov txheej txheem kev siv qoob loo: Kev siv cov roj ua kom muaj zog mus rau adsorb organic nkev roj, ze rau cov khoom xyaw nrog superheated steam backflush, desorption regeneration; Tsab Cai Tsaab Cai nuav yuav tsum muaj nqe kws yuav tsum tau siv.
(3) Novel Adsorption-Catalytic Combustion Method: Txoj kev no muab cov kev zoo ntawm cov qauv adsorption thiab kev ua kom zoo sib txuas ua kom tiav. Nws txais cov khoom adsorption tshiab (honeycomb activated charcoal) rau adsorption. Nws yog nkag tau rau hauv cov huab cua kub tom qab kev daws teebmeem thiab tom qab kev taw qhia txog kev daws teebmeem, kev tsom xam thiab kev tu tsiaj. Tom qab cov pa nkev tso rau hauv lub tshuab kom zoo li lub qhov hluav taws xob kom tsis muaj hluav taws kub, nws yog huv huv, thiab cov roj kub siv rau hauv lub tshuab, uas ua rau txo kev siv zog. Txoj kev no muaj cov yam ntxwv ntawm kev ruaj khov thiab txhim khu kev lag luam, tsis tshua peev, tsis ua hauj lwm tus nqi, kho yooj yim, thiab lwm yam. Nws muaj feem xyuam rau kev kho mob ntau npaum li cua thiab tsis muaj cua hlob. Nws yog ib txoj kev paub tab thiab cov tswv yim zoo rau kev kho vaj tse ntawm cov pa roj hauv av.