Kurapa Nzira dzeElectroplating Cyanide Exhaust Gasi

ziviso

Mu electroplating indasitiri, cyanides inoshandiswa zvakanyanya seyakakosha electroplating additives. Vanogona kuvandudza zvakanyanya kunaka uye kushanda kwe electroplating layers. Zvisinei, panguva ye electroplating process. cyanide-ine exhaust gas inogadzirwa, iyo ine zvakanyanya chepfu zvinhu zvakadai sehydrogen cyanide (HCN). Izvi zvinopa ngozi huru kune zvakatipoteredza uye utano hwevanhu. Nokudaro, kurapwa kunobudirira kwe electroplating cyanide exhaust gasi ine kukosha kukuru.

Zvitubu zveElectroplating Cyanide Exhaust Gasi

1. Electroplating Matangi: Panguva ye electroplating, nekuda kwekushanduka kwe electrolyte uye gasi rinogadzirwa ne electrolytic reaction, cyanide-ine exhaust gasi inobudiswa. Semuyenzaniso, mucyanide electroplating yegoridhe nesirivheri, cyanide compounds mumushonga weplating inoshanduka pasi pechiito chekupisa nemagetsi.

2. Kuchenesa Maitiro: Mushure me electroplating, kana ma workpiece acheneswa nekuchenesa mhinduro dzine Cyanides, shoma shoma ye cyanides ichaputika. Kunyangwe kana kuwanda kwema cyanides mumhinduro yekuchenesa kwakadzikira, kuunganidza kwenguva refu uye kuputika kunogona kukonzera matambudziko ekusvibisa.

3. Kuchenesa mvura: Kana iyo electroplating wastewater treatment isina kunaka, cyanide gasi inogona kupukunyuka. Mukuita kurapa cyanide-ine tsvina yemvura, kana maitiro ekuita asina kudzorwa zvakanaka, kuparara kwecyanides kunogona kuburitsa HCN gasi uye kupinda mumhepo.

4. Zvekubatsira Midziyo: Zvishandiso zvakaita semashini ekufemesa nemhepo yekudziya zvinogona zvakare kuburitsa huwandu hweanopotera gasi panguva yekushanda. Kunyangwe iyo chiyero chidiki, tichifunga nezve yakakwira chepfu yecyanides, haigone kuregererwa.

Hunhu hweElectroplating Cyanide Exhaust Gasi

1. High Toxicity: Mishonga yeCyanide, kunyanya HCN, ine muchetura zvakanyanya. Kunyangwe munzvimbo dzakadzika kwazvo, dzinogona kukonzera kukuvadza kumuviri wemunhu. Inhalation yecyanide-ine exhaust gasi inogona kutungamirira kune zviratidzo zvakadai semusoro, dzungu, kupera kwekufema, uye mumamiriro ezvinhu akaoma, zvinogona kutyisa upenyu.

2. Low Concentration asi Cumulative Effect: Kazhinji, kuwanda kwe electroplating cyanide exhaust gasi yakaderera, asi nekuda kwechizvarwa chinoramba chiripo panguva ye electroplating process, kana isina kunyatsogadziriswa, iyo inowedzera inokonzeresa kusvibiswa kwenguva refu kune zvakatipoteredza.

Kurapa Maitiro eElectroplating Cyanide Exhaust Gasi

1. Exhaust Gasi Kuunganidza

• Isa mahodhi ekuunganidza gasi kana zvimwe zvigadziriso zvekuunganidza panzvimbo dzekugadzira gasi. Aya maturusi ekuunganidza anofanirwa kugadzirwa zvinoenderana nechaiyo kugadzirwa maitiro uye marongerwo kuti ive nechokwadi chekuti gasi rekuburitsa rinogona kuunganidzwa zvinobudirira. Semuenzaniso, mune yakakura electroplating workshop, musanganiswa wenzvimbo dzekuunganidza hoods uye yakazara ventilation masisitimu inogona kushandiswa zvakakwana kubata cyanide-ine exhaust gasi.

2. Kufungidzira

• Kubvisa Guruva: Shandisa midziyo yekubvisa guruva senge bhegi mafirita kana electrostatic precipitators kuti ubvise tunhu tunhu mumhepo yekuburitsa gasi. Particulate nyaya inogona kutakura cyanide makomisheni pamusoro payo, uye kuibvisa pachine nguva kunogona kuvandudza mashandiro ekurapa kunotevera uye kudzivirira kukuvadzwa kwemidziyo yekurapa.

• Dewaxing uye Humidity Kubvisa: Sezvo gasi rekuburitsa rinogona kunge riine mhute yemvura uye mhute yemafuta, shandisa midziyo yekubvisa uye dehumidifiers kubvisa zvinhu izvi. Mupfunga wemvura unogona kukanganisa kuita kwekuita kweanotevera maitiro ekurapa, uye mhute yemafuta inogona zvakare kukanganisa kuita kwezvinokonzeresa uye zvinonyudza.

3. Main Treatment Process

• Chemical Absorption Method

• Principle: Shandisa alkaline mhinduro dzakadai sodium hydroxide (NaOH) kana calcium hydroxide (Ca (OH) ₂) sezvinwiwa. Cyanide mu exhaust gasi inopindirana nealkaline solution kuumba cyanide munyu. Semuenzaniso, HCN inopindirana neNaOH kuumba Sodium Cyanide (NaCN), iyo inogona kunyatso bvisa cyanide kubva kune gasi rekubuda.

• urongwa: Iyo gasi yekuburitsa inopinda mushongwe yekunyudza kemikari, kwainobata neyakapfapfaidzwa alkaline mhinduro nenzira inopesana. Iyo absorption tower inowanzozadzwa nezvinhu zvekurongedza kuti iwedzere nzvimbo yekubatana pakati pegasi uye mvura, ichivandudza kunyudza.

• Catalytic Oxidation Nzira

• Principle: Pasi pekushanda kwe catalyst, cyanide iri mugasi reutsi inooxidized kuita isina chepfu kabhoni diokisijeni (CO₂), mvura (H₂O), uye nitrogen (N₂). Zvinhu zvinowanzo shandiswa zvinosanganisira zvinhu zvinokosheswa nesimbi (zvakaita seplatinum, palladium) uye zvinhu zvinokosheswa nesimbi (zvakaita setitanium dioxide, vanadium pentoxide).

• urongwa: Mushure mekupfuura nepakati pemakemikari absorption tower, gasi rekuburitsa rinopinda mune catalytic oxidation mudziyo. Chigadzirwa chacho chine bhedha inogadzirisa, uye gasi rinopedza simba rinopfuura nepakati pebhedha rinokonzera pane imwe tembiricha uye nzvimbo velocity. Iyo catalyst inosimudzira oxidation reaction ye cyanide, ichideredza huturu hwayo.

• Wet Absorption Method

• Principle: Shandisa inonyorovesa shongwe kupfapfaidza mvura inonwisa kuti itore cyanide mumhepo yekuburitsa gasi. Iyo inopinza inogona kuve yakakosha kemikari mhinduro yakagadzirwa zvinoenderana nehunhu hwecyanide.

• urongwa: Iyo gasi yekupedza inopinda mushongwe yekunyorova yemvura kubva pasi, uye iyo inopinza inopfapfaidzwa kubva kumusoro. Iwo maviri ari kusangana mushongwe, uye cyanide iri mumhepo yekuburitsa gasi inotorwa neinonyudza. Mvura yakanyura inobva yabatwa zvakasiyana kubvisa cyanide.

• Biological Treatment Method

• Principle: Mamwe ma microorganisms anokwanisa kuora cyanide. Shandisa ma microorganisms aya kusvibisa cyanide mumhepo yekuburitsa gasi munzvimbo yakakodzera.

• urongwa: Iyo gasi yekuburitsa inotanga kunyoroveswa uye yobva yapinda mubiological treatment mudziyo. Chigadzirwa chacho chine biofilm carrier iyo microorganisms inosungirirwa. Cyanide iri mumhepo inopedza gasi inoshambadzirwa neiyo biofilm uye yakaodzwa nema microorganisms kuita zvisiri-chepfu zvinhu. Nekudaro, iyi nzira inoda kudzora kwakasimba kwemamiriro ezvakatipoteredza senge tembiricha, pH, uye kupihwa kwechikafu kuti ive nechokwadi chekukura uye kuita kwehutachiona.

4. Monitoring uye Discharge

• Isa midziyo yekutarisa yepamhepo pachiteshi chekuburitsa gasi kuti urambe uchitarisisa kuwanda kwecyanide uye zvimwe zvinosvibisa mugasi rekuburitsa. Chete kana gasi rekuburitsa rinosangana nemamiriro ekunze uye enzvimbo yekuburitsa ndipo parinogona kuburitswa mumhepo. Iyo data yekutarisa inofanirwa kurekodhwa uye kugara ichitaurwa kuti ive nechokwadi chekutevedzera kwezvakatipoteredza.

Case Study

Rimwe bhizinesi re electroplating raive nezvinetso zvakakomba necyanide-ine exhaust gasi kusvibiswa panguva yekugadzira. Kugadzirisa dambudziko iri, bhizinesi rakatora matanho ekurapa anotevera:

1. Exhaust Gasi Kuunganidza: Yakaisa yakakwirira-inoshanda gasi yekuunganidza hood pamusoro pe tangi ye electroplating kuti ive nechokwadi chekuti inopfuura 95% yegasi rekubuda rakaunganidzwa.

2. Kufungidzira: Misa yekubvisa guruva uye dehumidification system kuti ibvise zvinobudirira zvinhu uye mhute yemvura mumhepo yekuburitsa gasi.

3. Main Kurapa: Yakagamuchirwa musanganiswa wemakemikari absorption uye catalytic oxidation maitiro. Kutanga, gasi rinopedza simba rakapinda mushongwe yekunyudza makemikari yakazadzwa neNaOH mhinduro yekubvisa yakawanda yecyanide. Zvadaro, iyo cyanide yakasara yakawedzerwa oxidized uye yakaora mu catalytic oxidation device.

4. Monitoring: Yakaisa online yekutarisa sisitimu kuti ive nechokwadi chekuti gasi rekubuda nemhepo rinogadziriswa rinosangana nemitemo yenyika.

Mushure mekuitwa kwematanho aya, iyo cyanide yekumisikidza mumhepo yekupedza gasi yebhizinesi yakadzikira zvakanyanya, zvichinyatso kudzikisa kusvibiswa kwezvakatipoteredza nekuchengetedza hutano hwevashandi.

mhedziso

Kurapa kwe electroplating cyanide exhaust gasi chiyero chakakosha kuchengetedza nharaunda uye hutano hwevanhu muindasitiri yemagetsi. Nekutora kwakakodzera gasi kuunganidzwa kwegasi, pretreatment, kurapa kukuru, uye yekutarisa uye yekuburitsa matanho, iyo cyanide mumhepo yekuburitsa gasi inogona kudzikiswa zvinobudirira kuti isangane nezvinodiwa zvekuchengetedzwa kwezvakatipoteredza. Mune ramangwana, nekuenderera mberi kwekuvandudzwa kwezvinodiwa zvekuchengetedza kwezvakatipoteredza, mabhizinesi e electroplating anofanirwa kuenderera mberi nekugadzirisa uye nekuvandudza maitiro ekurapa gasi rekupedza simba kuti awane budiriro inoenderera.