Cellulose Ether Technologies yeOrganic Wastewater Treatment

The tsvinamvura muindasitiri yecellulose ether inonyanya kunyungudutsa organic senge toluene, oliticol, isopate, uye acetone. Kudzikisa organic solvents mukugadzira uye kuderedza kabhoni emissions chinhu chisingadzivisiki chinodiwa pakugadzirwa kwakachena. Sebhizinesi rine mutoro, kudzikisa kubuda kwemhepo kunodiwawo kuchengetedza kwezvakatipoteredza uye zvinofanirwa kuzadzikiswa. Tsvagiridzo yekurasika kwekunyungudutsa uye kudzokorodza muindasitiri ye cellulose ether idingindira rine musoro. Munyori akaongorora kumwe kuongorora kwekurasikirwa kwekunyungudika uye kudzokorora mukugadzirwa kwefibrin ether, uye akawana mhedzisiro yakanaka mubasa chairo.

Keywords: cellulose ether: solvent recycling: exhaust gasi; kuchengeteka

Organic solvents maindasitiri ane akawanda emafuta makemikari indasitiri, mishonga yemishonga, mishonga uye mamwe maindasitiri. Organic solvents kazhinji haina kubatanidzwa mukuita panguva yekugadzirwa kwe cellulose ether. Munguva yekushandiswa kwemaitiro, zvinonyungudutsa mukuita kudzokorodza maitiro emakemikari kuburikidza nemudziyo wekudzokorodza zvinogona kushandiswa kuwana kudzoreredzwa. The solvent inobudiswa mumhepo muchimiro cheexhaust gas (pamwe chete inonzi VOC). VOC inokonzeresa kukuvadza kwakananga kuhutano hwevanhu, kudzivirira izvi zvinonyungudutsa kubva mukupisa panguva yekushandiswa, kudzokorodza Mamiriro ezvinhu kuti uwane yakaderera-kabhoni uye zvakatipoteredza zvakachena kugadzirwa.

1. Kukuvadza uye nzira yakajairika yekudzokorodza yeorganic solvents

1.1 Kukuvadza kwezvinowanzo shandiswa organic solvents

Iyo huru organic solvents mukugadzirwa kwe cellulose ether inosanganisira toluene, isopropanol, olite, acetone, nezvimwewo. Izvo zviri pamusoro apa zvine chepfu organic solvents, senge dermopine. Kusangana kwenguva refu kunogona kuitika mu neurasthenia syndrome, hepatoblasty, uye kusashanda kumwedzi kwevashandi vechikadzi. Zviri nyore kukonzera ganda rakaoma, kuputika, dermatitis. Inogumbura ganda uye mucous membranes, uye ine anesthesia yepakati tsinga system. Iyo isopropanol vapor ine yakakosha anesthesia effect, iyo ine stimulating effect pa mucosa yeziso uye yekufema turakiti, uye inogona kukuvadza retina uye optic nerve. Iyo anesthesia mhedzisiro yeacetone pane yepakati tsinga system ine kuneta, kusvotwa, uye dzungu. Muzviitiko zvakanyanya, kurutsa, spasm, uye kunyange coma. Inogumbura maziso, mhuno, nepahuro. Kubata kwenguva refu nedzungu, kunzwa kupisa, pharyngitis, bronchitis, kuneta, uye kufara.

1.2 Nzira dzakajairwa kudzokorodzazve kune organic solvents inopedza gasi

Nzira yakanakisa yekurapa gasi rekunyungudutsa ndeyekudzikisa kubuda kwezvinonyungudutsa kubva kutsime. Kurasikirwa kusingadzivisiki kunogona kuwanikwa chete nezvinonyungudutsa zvakanyanya. Parizvino, makemikari ekugadzirisa kugadzirisa nzira yakakura uye yakavimbika. Ikozvino inowanzoshandiswa organic solvents mumarara gasi ndeiyi: Concretion nzira, absorption nzira, adsorption nzira.

Iyo condensation nzira ndiyo yakapusa tekinoroji yekudzokorodza. Nheyo yakakosha ndeyekutonhodza gasi rekuburitsa kuti tembiricha idzikire pane tembiricha yedova reiyo organic matter, kukonesa iyo organic matter kuita mudonhwe, yakanangana negasi rekubuda, uye kuishandisa zvakare.

Iyo nzira yekunyudza ndeye kushandisa iyo inonwisa mvura kuti ubate zvakananga gasi rekuburitsa kuti ubvise iyo organic nyaya kubva kune exhaust gasi. Kutora kwakakamurwa kuita kutorwa kwemuviri uye kutorwa kwemakemikari. Solvent kudzoreredza kunyudza kwemuviri, uye zvinwiwa zvinowanzoshandiswa imvura, dhiziri, parafini kana zvimwe zvinonyungudutsa. Chero organic matter iyo inonyungudika mune inonwisa inogona kutamiswa kubva pachikamu chegasi kuenda kuchikamu chemvura, uye iyo inonwisa mvura inogona kuramba ichirapwa. Kazhinji, yakanatswa distillation inoshandiswa kunatsa solvent.

Iyo adsorption nzira parizvino iri kushandisa yakakura solvent yekudzoreredza tekinoroji. Nheyo iyi ndeyekutora organic zvinhu mumhepo yekupedza nekushandisa iyo porous chimiro che inoshanda kabhoni kana activated kabhoni fiber. Kana iyo gasi inopera inoshambadzirwa nemubhedha weadsorption, iyo organic matter inoshambadzirwa pamubhedha, uye gasi rekubuda rinocheneswa. Kana iyo adsorbent adsorption inosvika pakuzara, mhute yemvura (kana mhepo inopisa) inopfuudzwa kunopisa mubhedha unonyudza, kudzorera iyo adsorbent, iyo organic matter inopeperetswa uye inoburitswa, uye musanganiswa wemhute unoumbwa nemhute yemvura (kana mhepo inopisa. ). Essence Tonhodza musanganiswa weutsi necondenser kuti uuise mumvura. Izvo zvinonyungudutsa zvinoparadzaniswa nekushandiswa kwepfungwa distillation kana separators maererano nemushonga wemvura.

2. Kugadzirwa uye kudzokororwa kwe organic solvent exhaust gasi mukugadzirwa kwe cellulose ether.

2.1 Organic solvent exhaust gasi chizvarwa

Kurasikirwa kwekunyungudutsa mukugadzirwa kwe cellulose ether kunonyanya kukonzerwa nechimiro chemvura yakasviba uye gasi remarara. Iwo akasimba masara ari mashoma, uye kurasikirwa kwechikamu chemvura kunonyanya kuve yetsvina clip clip. Low-boiling point solvents zviri nyore chaizvo kurasikirwa muchikamu chemvura, asi kurasikirwa kwepasi-boiling point solvents kazhinji kunofanira kubva pachikamu chegasi. Kurasikirwa kwehusimba kunonyanya kuderedzwa, kuita, centrifugal, vacuum, nezvimwe zvinhu sezvizvi:

(1) Iyo inonyungudutsa inokonzera "kufema" kurasikirwa kana ichichengetwa mutangi yekuchengetedza.

(2) Low-boiling solvents ane kurasikirwa kukuru panguva yevacuum, iyo yakakwirira yevacuum, iyo yakareba nguva, inowedzera kurasikirwa; kushandiswa kwemapombi emvura, W -type vacuum pumps kana liquid ring systems zvinokonzeresa tsvina huru nekuda kwevacuum exhaust gas.

(3) Kurasikirwa mukati mekuita kwe centrifugation, huwandu hukuru hwemhepo inonyungudutsa gasi inopinda munharaunda panguva yekuparadzaniswa kwesefa yecentrifugal.

(4) Kurasikirwa kunokonzerwa nekuderedza decompression distillation.

(5) Panyaya yemvura yakasara kana kuti yakanyanyonamira zvakanyanya, zvimwe zvinonyungudutsa mune zvakasara zvedistillation hazvishandiswezve.

(6) Kusakwana kwepamusoro peak gasi kudzoreredza kunokonzerwa nekushandiswa zvisina kunaka kwezvekudzokorodza masisitimu.

2.2 Kudzokorodza nzira ye organic solvent exhaust gasi

(1) Solvent senge matangi ekuchengetera matangi. Tora kuchengetedza kupisa kuderedza kufema, uye batanidza zvisimbiso zvenitrogen nezvinonyungudutsa zvakafanana kudzivirira kurasikirwa kwetangi. Mushure mekugadzirisa kwemuswe gasi inopinda mukugadzirisa zvakare mushure mekugadzirisa, inonyatsodzivirira kurasikirwa panguva yepamusoro-concentration solvent storage.

(2) Vacuum system cyclic aeration uye kudzokorodza tsvina gasi mune vacuum system. Vacuum exhaust inodzokororwa necondenser uye inodzoserwa nevatatu-nzira recyclers.

(3) Mukuita kugadzirwa kwemakemikari, solvent iyo yakavharwa kuderedza maitiro haina kuburitsa kwenyama. Mvura yetsvina ine yakawandisa tsvina ine huwandu hwemvura yakasviba inodururwa uye inodzokorodza gasi rekubuda. Varcation solvent.

(4) Kudzora kwakasimba kwekudzokorodza maitiro mamiriro, kana kutora yechipiri adsorption tangi dhizaini kudzivirira peak kupera gasi kurasikirwa.

2.3 Nhanganyaya kune activated carbon recycling yeyakaderera-concentration organic solvent exhaust gasi

Iyo yataurwa pamusoro-yataurwa muswe gasi uye yakaderera-yakadzika gasi exhaust gasi meridian pombi dzinotanga kupinda muyakagadzirwa kabhoni mubhedha mushure mekutanga kuisirwa. Iyo solvent inonamirwa kune activated kabhoni, uye gasi rakacheneswa rinoburitswa nepasi pemubhedha weadsorption. Iyo carbon bed ine adsorption saturation inoitwa ne low-pressure steam. Utsi hunopinda kubva pasi pemubhedha. Kuyambuka iyo activated kabhoni, iyo adsorbent solvent inosungirirwa uye inoburitswa kunze kwekabhoni bhedha kuti ipinde mucondenser: mune condenser, iyo inonyungudutsa uye mvura yemvura musanganiswa inodzorwa uye inoyerera muganho rekuchengetedza. Iko kusungirirwa kunenge 25 o / O kusvika 50%, mushure mekunge distillation kana separator yaparadzaniswa. Mushure mekunge mubhedha wemarasha wabatanidzwa uye unovandudza kuburikidza nekuomeswa, iyo switching back adsorption state inoshandiswa kupedzisa kutenderera kwekushanda. Zvose zvinoenderera mberi. Kuti uvandudze chiyero chekudzoreredza, iwo matatu makani echipiri -level tandem anogona kushandiswa.

2.4 Mitemo Yekuchengetedza yeOrganic exhaust gasi recycling

(1) Dhizaini, kugadzira, uye kushandiswa kweiyo activated kabhoni yekunamatira uye chubhu condenser ine steam inofanirwa kusangana nezvinodiwa zveGBL50. Pamusoro peiyo inoshanda kabhoni suction mudziyo unofanirwa kumisikidzwa ne pressure gauge, kuchengetedza discharge mudziyo (safety valve kana blasting tablets Device). Dhizaini, kugadzira, kushanda, uye kuongororwa kwechidzitiro chekudonha kwekuchengetedza kunoenderana nezvinodiwa zve "dhizaini uye kuverenga kwedhizaini kuverenga kwedhizaini uye kuverenga kwekusungirirwa kwekuchengetedza uye dhizaini yemavharuvhu mashanu ekuchengetedza uye piritsi rekuputika. ”yekumanikidza mudziyo kuchengetedza tekinoroji manejimendi ekutarisa. “

(2) Chishandiso chekutonhodza otomatiki chinofanirwa kupihwa mune yakabatidzwa kabhoni inonwisa kabati. Iyo activated kabhoni suction yekubatanidza gasi inlet uye kutumira kunze uye adsorbent inofanirwa kunge iine akawanda tembiricha kuyerwa mapoinzi uye inoenderana tembiricha inoratidzira regulator, iyo inoratidza tembiricha chero nguva. Kana tembiricha ikapfuura kuseta kwetembiricha yepamusoro, pakarepo buritsa chiratidzo chealarm uye wobva wabatidza mudziyo wekutonhora. Iyo I'HJPE yemapoinzi maviri ekuyedza tembiricha haipfuure 1 m, uye chinhambwe chiri pakati penzvimbo yekuyedza uye madziro ekunze emudziyo anofanira kunge akakura kupfuura 60 cm.

(3) Iyo gasi yekutarisa detector yeiyo activated kabhoni suction attachment gasi inofanira kuiswa kuti ione gasi rekuisa gasi nguva dzose. Kana iyo yekumisikidzwa kweiyo organic gasi kunze kwenyika inodarika iyo yakanyanya kuseta kukosha, inofanirwa kumiswa: adsorption uye inorova. Kana iyo mhepo ine mitsetse, pombi yekudzivirira yekudzivirira inofanirwa kumisikidzwa pamidziyo yakadai secondenser, gasi liquid separator, uye tangi yekuchengetedza mvura. Activated carbon absorbers inofanira kuiswa pamhepo duct pamusuwo uye kunze kwenyika kwegasi inlet uye kunze kwenyika kuti uone kumira kwemhepo inoyerera (kudonha kwemhepo) ye adsorbent kudzivirira gasi tambo yegasi tambo kubva kune yakashata mhepo kupera.

(4) Izvo zvinonyungudutsa zvinofanira kurohwa nepombi yemhepo uye air-phase concentration alarm mumhepo pombi mumhepo. Waste activated carbon inobatwa zvinoenderana nemarara ane ngozi. Magetsi nemidziyo zvinotora kuputika -proof dhizaini.

(5) The solvent inodaidzwa kunzi three-way access kune inovharisa moto unit kuwedzera mweya mutsva kana yabatana nerecycling unit.

(6) Chinonyungudutsa chinodzoreredza mapaipi epombi yega yega kuti iwane gasi rekubuditsa repasi-concentration dilute nhanho dzemvura zvakanyanya sezvinobvira kudzivirira kupinda kwakananga kune yakakwira yekupisa gasi.

(7) Mapaipi ekudzoreredza kudzoreredza anoshandiswa kugadzirwa kwe electrostatic kunze kwenyika, uye ketani yekumisa nitrogen inochajwa uye kucheka kwehurongwa kunotemwa nearamu yemusangano.

3. Mhedziso

Muchidimbu, kuderedza kurasikirwa kwezvinonyungudutsa mukugadzirwa kwe cellulose ether nyama yemombe kudzikiswa kwemitengo, uye zvakare chiyero chinodiwa kushandira nharaunda kutsvaga kuchengetedza kwezvakatipoteredza uye kuchengetedza hutano hwevashandi. Nekugadzirisa kuongororwa kwekugadzirwa kwekugadzirisa kushandiswa kwekugadzirisa, matanho anowirirana ekuwedzera kubudiswa kwemhepo; ipapo iko kudzokorodza kushanda kweiyo kudzoreredza kushanda kunovandudzwa nekugadzirisa magadzirirwo eiyo activated kabhoni recycling mudziyo: Chengetedzo Risk. Kuti uwedzere mabhenefiti pahwaro hwechengetedzo.