Kudzidza nezve kurapwa kwemhangura-arsenic waste acid mvura ine sodium hydrosulfide panzvimbo ye sodium sulfide.

ziviso

Ongororo inoratidza kuti kurapwa kwemhangura nearsenic-containing waste acid kunoshandisa nzira inosanganisira sulfide precipitation, ichiteverwa ne gypsum addition uye electrochemical neutralization, zvichizoguma nekubuda kwakasimba kunoenderana nezvinodiwa nemutemo. Mudanho re sulfide precipitation, sodium sulfide solution ine huwandu hwakawanda hwe26% inowedzerwa otomatiki kune copper nearsenic-containing waste acid pasi pemamiriro chaiwo eacidity, zvichikonzera kuumbwa kweCuS neAs2S3 precipitates kubvisa copper nearsenic ions kubva mu liquid phase. Mukugadzirwa chaiko, sodium sulfide solution ine huwandu hwakawanda hwetsvina isinganyunguduke, uye kana yaiswa mumhepo, inooxidation zvishoma nezvishoma kuti igadzire thiosulfate. Pamusoro pezvo, ine tembiricha yakakwira yecrystallization, pakati pezvimwe zvipingamupinyi. Nokudaro, kuwana sulfide agent itsva yekutsiva sodium sulfide kwaizova kwakakosha zvikuru.

Solid Sodium Hydrosulfide

Process Principle

Zvichidziviswa nemaitiro ekuwedzera eH2S aripo, kurapwa kwe copper ne arsenic-containing waste acid uchishandisa Sodium hydrosulfide kunoitwa zvichibva pakushandisa kwazvino uye kuyerera kwe sulfuric acid waste acid nemvura yakasviba mu workshop. Nzira iyi inoshandisa sodium hydrosulfide ne sodium sulfide musanganiswa we solution yekurapa.

Maitiro Kuyerera

Mufananidzo 1 unoratidza maitiro ekuyerera dhayagiramu yekurapa mhangura uye arsenic-ine tsvina asidhi uchishandisa sodium hydrosulfide. Iyo tsvina yeasidhi mhinduro, mushure mekubviswa kweSO2 mushongwe yekubvisa, inopinda mu sodium hydrosulfide reaction tank kubva kumusoro. Mhinduro yakasanganiswa ye sodium hydrosulfide uye sodium sulfide inowedzerwa kubva pasi peiyo reaction tank. Pasi pemamiriro eacidic, H2S gasi inogadzirwa uye zvishoma nezvishoma inosimuka, ichiita nemhangura uye arsenic kubva kumusoro ichidzika kuumba CuS uye As2S3 inonaya. Mvura iyi inobva yapfachukira mucopper thickener kuti iite sedimentation. Iyo supernatant inotumirwa kune gypsum kurapwa maitiro, nepo pasi sludge ichidonhedzwa mumvura yekusefa isati yatumirwa kuti ienderere mberi kugadzirisa. H2S diki isina kubatwa inodhonzwa neipi yakaipa yekumanikidza pombi kuenda kune detoxification tower, iyo inotorwa neinotenderera yakasanganiswa mhinduro ye sodium hydrosulfide uye sodium sulfide, kuve nechokwadi kuti inosangana nekubuda kwemazinga.

Yekuedza Nzira

Iyo inoenderera yekugadzira modhi inogamuchirwa, iine mamwe maitiro uye kudzora ma paramita akasara asina kuchinjika. Sodium hydrosulfide inobata nekukurumidza kupfuura sodium sulfide; kana kusungirirwa kwakanyanyisa, yakawanda yehydrogen sulfide (H2S) inogadzirwa nokukurumidza pasi pemamiriro e acidic. Kunze kwekuita neimwe yemhangura uye arsenic mumarara asidhi, iyo yakawandisa yehydrogen sulfide inopukunyuka iyo yemvura pamusoro nekuda kwekubvongodza kwepaddle inomutsa uye inokweverwa kure nekumanikidza kwakashata kune detoxification tower. Maitiro aripo anoshandisa sodium sulfide kutora yakawandisa hydrogen sulfide inogadzirwa panguva ye sulfide reaction (Na2S + H2S = 2NaHS). Mushure mekuedza kushandiswa kwe sodium hydrosulfide, iyo sodium sulfide yekuchengetedza tank ine imwe sodium hydrosulfide, iyo inoderedza kugona kwayo kutora yakawandisa hydrogen sulfide. Kudzivirira kunyura kusina kukwana kwehydrogen sulfide, iyo inogona kutungamira kune kusingaenderane nekubuda kubva mushongwe ye detoxification, mvura (condensate kubva mumhepo inodziya yesodium sulfide yekuchengetedza tank) inowedzerwa kune sodium sulfide yekuchengetera tangi panguva yekuyedzwa kuchengetedza kusangana kweyakasanganiswa mhinduro ye sodium sulfide uye sodium hydrosulfide inenge 15%.

mhedziso

1. Mushure mekushandisa musanganiswa wesodium hydrosulfide uye sodium sulfide, iyo reagent mutengo wekurapa cubic mita yemarara acid inoderedzwa kusvika pa52.5% yeiyo pure sodium sulfide, zvichikonzera zvakakosha zvehupfumi.

2. Kushandiswa kwemusanganiswa mhinduro ye sodium hydrosulfide uye sodium sulfide haina kukanganisa zviratidzo zvekubuda zvemusangano; mitemo yekuyerera kwemvura yakasviba inoramba yakagadzikana uye ichienderana.

3. Nekuda kwekushandiswa kwakasanganiswa kwe sodium sulfide uye sodium hydrosulfide, uye neiyo iripo detoxification tower process isina kuchinjika, hakuna kumbove nezviitiko zvekusatevedzera mukubuda kubva mushongwe yekubvisa.