I-Paraformaldehyde, eyaziwa nangokuthi i-solid formaldehyde noma i-polymerized formaldehyde, iyisi-oligomer esiqondile se-formaldehyde enefomula ejwayelekile ethi HO(CH₂O)ₙH, lapho u-n uvamise ukuba kusuka ku-8 kuye ku-100. Ivame ukubonakala njengempuphu emhlophe eyenziwe amakristali enomoya onamandla futhi ivame ukusetshenziswa njengomthombo olula we-formaldehyde gas. I-Hexamine, egama layo lesistimu yi-hexamethylenetetramine, iyinhlanganisela ye-organic heterocyclic enefomula ethi (CH₂)₆N₄. Iphinde ibizwe nge-urotropine noma i-methenamine futhi ivame ukubonakala njengezinhlamvu zamakristali ezingena mibala noma ezimhlophe enomoya omnene ofana ne-amine. Nakuba zombili lezi zinto zivela ku-formaldehyde, izakhiwo zazo zamakhemikhali, amaphrofayili okusabela, nezidingo zokuphatha ziyahlukahluka kakhulu. I-Paraformaldehyde iyancibilika lapho ifudunyezwa ukuze ikhiphe i-formaldehyde monomer, okuyenza ibe enye indlela ewusizo ezixazululweni ze-formalin ezimbonini eziningi. I-Hexamine, ngokuphambene, yenziwa ngokuphendula kwe-formaldehyde ne-ammonia futhi inesakhiwo samangqamuzana esiqinile esifana nendlu enikeza ukuzinza kwayo okuyingqayizivele nokusebenza kwayo okuhlukahlukene. Lezi zihlukahlukene eziyisisekelo zithinta ngqo ukuthi izinto ngalunye zigcinwa, zithunyelwa, futhi zisetshenziswa kanjani ezimbonini ezahlukahlukene. Ukuqonda lezi zihlukahlukene kubalulekile kunoma yiliphi ibhizinisi elihilelekile ekuthengeni amakhemikhali, ekuthuthukisweni kwefomula, noma ekwenzeni izimboni.

Ngokombono womzimba nowamakhemikhali, i-paraformaldehyde inokuqukethwe okujwayelekile kwe-formaldehyde kusuka ku-91% kuye ku-99% futhi inesisindo samangqamuzana esihluka ngokwezinga layo lokuhlanganiswa. Iyakwazi ukuncibilika kalula emanzini ashisayo futhi ikhiphe umusi we-formaldehyde lapho ifudunyezwa ngaphezu kuka-150°C, okumele kuphathwe ngokucophelela ukuze kugwenywe ukuhlanganiswa okungalawulwa noma ukubola. I-hexamine, ngakolunye uhlangothi, inesisindo samangqamuzana esingaguquki esingu-140.19 g/mol futhi iyancibilika kakhulu emanzini nogologo kodwa incibilike kancane kuma-ether. Enye yezinto ezibaluleke kakhulu umehluko ukuthi i-hexamine ayinyakazi futhi ayikhiphi i-formaldehyde ngaphansi kwezimo ezijwayelekile; yona iyabola ibe yi-formaldehyde ne-ammonia ezindaweni ezine-asidi emazingeni okushisa aphezulu. Lokhu kwenza i-hexamine ingabi yingozi kakhulu ukuphatha mayelana nokuphefumula uma kuqhathaniswa ne-paraformaldehyde, yize zombili izinto zidinga izinyathelo zokuphepha ezifanele. Ngokuya ngezicelo, i-paraformaldehyde ibaluleke kakhulu njengomthombo oqondile we-formaldehyde wokuhlanganisa ama-resin, izincibilikisi, kanye nama-ejenti okuqeda izindwangu, kanti i-hexamine iyaziswa ngendima yayo njenge-ejenti yokwelapha, i-corrosion inhibitor, kanye ne-intermediate ekuhlanganisweni kwemithi. Ukukhetha phakathi kwalezi zinto ezimbili kuncike kakhulu endleleni ethile yekhemikhali edingekayo, isivinini sokuphendula esifunwayo, kanye nemininingwane yomkhiqizo wokugcina.

Ukwenziwa kwe-paraformaldehyde embonini kuqala ngesisombululo se-formaldehyde esigxilile, ngokuvamile esingu-37% kuye ku-50% ngesisindo, esidluliswa ngokuphuma komoya nokukristaliswa okulawulwayo ukuze kufinyelelwe izinga elifunwayo lokuhlanganiswa. Le nqubo ihilela ukuphathwa kahle kwezinga lokushisa, njengoba ukushisa ngokweqile kungadala ukuhlakazeka nokulahleka kokuqukethwe kwe-formaldehyde, kanti ukushisa okunganele kubangela ukuhlanganiswa okungaphelele nomkhiqizo ongazinzile. Ngemuva kokukristaliswa, okuqinile kuhlanganiswa ngokusebenzisa i-centrifugation, kugezwe ngamanzi abandayo ukuze kususwe izinsalela zamagciwane kanye nokungcola, bese komiswa ngaphansi komoya emazingeni okushisa angaphansi kuka-80°C. Umkhiqizo wokugcina ugaywa futhi uhlungwe ukuze kufinyelelwe usayizi wezingxenye olinganayo, okubalulekile ezinhlelweni ezidinga ukuncibilika noma ukusabalala okulinganayo. Izinga lokulawula ikhwalithi ye-paraformaldehyde lihlanganisa amaphesenti okuqukethwe kwe-formaldehyde, izinga lokuhlanganiswa, ububanzi bokuncibilika, izinga lamagciwane akhululekile (i-formic acid), kanye nokuqukethwe komswakama. Abakhiqizi abahlonishwayo njengoHebei Jintaida Chemical Co., Ltd. bagcina izindinganiso eziqinile zangaphakathi ezivame ukudlula izindinganiso ezijwayelekile zemboni, baqinisekise ukuthi yonke i-batch ihlangabezana nezidingo eziqinile zokukhiqizwa kwe-resin, ukuhlanganiswa kwezindwangu, kanye nokwakhiwa kwezindwangu. Ukukhiqizwa kwe-hexamine, ngokuphambene, kuhilela ukuhlanganiswa kwe-exothermic kwe-formaldehyde ne-ammonia engenamanzi ku-reactor ye-liquid-phase, okulandelwa ukukristaliswa, ukuhlunga, nokomisa. Le nqubo yokusabela iyashesha kakhulu futhi kufanele ipholiswe kahle ukuze kugcinwe izinga lokushisa phakathi kuka-40°C no-60°C, ngoba ukushisa ngokweqile kungaholela ezinhlelweni eziseceleni ezinciphisa umkhiqizo nokuhlanzeka. Ngemuva kokuthi ukusabela sekuqediwe, isisombululo se-hexamine siyapholiswa ukuze kuqale ukukristaliswa, futhi amakristalu ahlukaniswa nge-centrifugation, agcwaliswe, futhi omiswe ku-rotary drum dryer. Izindinganiso zekhwalithi ye-hexamine zihlanganisa ukuhlanzeka kokuhlola (ngokuvamile ≥99.0%), izinga lokuncibilika (ububanzi obujwayelekile bungama-260°C kuye ku-295°C ngokuhlakazeka), ukulahleka ekumeni, uthuli oluhlanganiswe ne-sulfur, kanye nokuqukethwe kwensimbi esindayo. Zombili izinqubo zokukhiqiza zidinga izinhlelo eziqinile zokulawula inqubo, ukuthatha isampula njalo, nokuhlolwa okunzulu kwezibalo ukuze kuqinisekiswe ukuthi umkhiqizo wokugcina uhlangabezana njalo nezidingo zamakhasimende kanye nezindinganiso zokulawula.

Ukuphathwa kwekhwalithi akugcini emkhiqizweni wokugcina; kuqala ngokuhlola izinto zokusetshenziswa futhi kuqhubeke kuzo zonke izigaba zokukhiqiza. Kumaparaformaldehyde, isixazululo se-formaldehyde esingenayo kumele sihlaziywe ngokuqukethwe kwe-methanol, okuqukethwe yi-iron, nokuba ne-asidi, ngoba lezi zinto ezingcolile zingathinta kakhulu ukuziphatha kwe-polymerization kanye nekhwalithi yomkhiqizo wokugcina. Ekukhiqizweni kwe-hexamine, ubuhlanzekile besixazululo se-formaldehyde negesi le-ammonia kubalulekile, ngoba noma yikuphi ukungcola kungaba yisikhuthazi sezinto ezingafuneki ezizokwenzeka noma kuhlale njengento engcolile emakristalini wokugcina. Izindawo zokukhiqiza zesimanje zisebenzisa izihlazi zokukhiqiza eziku-inthanethi, njengezilinganisi ze-near-infrared spectrometers kanye nezinzwa ze-refractive index, ukuze kuqashwe inqubekela phambili yokuphendula ngesikhathi sangempela futhi kulungiswe amapharamitha okusebenza ngokuzenzakalelayo. Ukuhlolwa komkhiqizo wokugcina kuvame ukubandakanya i-gas chromatography yezinto ezingcolile eziguquguqukayo, i-Karl Fischer titration yokuqukethwe komswakama, kanye ne-differential scanning calorimetry yokuchaza ukuziphatha kwe-thermal. Izinkampani eziningi ezihamba phambili zamakhemikhali, okubandakanya i-Hebei Jintaida Chemical Co., Ltd., zitshale ezinhlelweni eziphambili zokuphathwa kwekhwalithi eziqinisekiswe ngaphansi kwezindinganiso ezifana ne-ISO 9001, ziqinisekisa ukulandelelwa kusuka eqenjini lezinto zokusetshenziswa kuya emkhiqizweni othunyelwe. Ezinkampanini ezisebenzisa lawa makhemikhali njengezinto ezibalulekile, ukuthenga kumkhiqizi onohlelo oluqinile lokuphathwa kwekhwalithi kunciphisa ubungozi bokuhluleka kweqenjini, ukuphazamiseka kokukhiqiza, nokulungiswa okubizayo.

I-paraformaldehyde iyisisekelo esibalulekile ekukhiqizweni kwezinsipho ezenziweyo, ikakhulukazi izinsipho ze-phenolic, izinsipho ze-urea-formaldehyde, nezinsipho ze-melamine-formaldehyde. Embonini yezinsipho, abakhiqizi bakhetha i-paraformaldehyde kunokuba izixazululo ze-formaldehyde ezibukhali lapho bedinga isilinganiso esiphakeme se-formaldehyde ngaphandle kwamanzi, angaphazamisa izinqubo zokuhlanganisa futhi andise izindleko zamandla ngesikhathi sokomisa. Izinsipho ze-phenolic ezikhiqizwa kusetshenziswa i-paraformaldehyde zibonisa ukuzinza okuhle kwezinga lokushisa, amandla emishini, kanye nezakhiwo zokuvikela ugesi, okwenza zibe yisidingo ezingxenyeni zezimoto, izinto zikagesi, nezinto zokwakha. I-hexamine, ngakolunye uhlangothi, ingenye yezinto ezisetshenziswa kakhulu zokuqiniswa kwezinsipho ze-phenolic ne-resorcinol, lapho isebenza njengesishisi esifihliwe esikhulula i-formaldehyde ne-ammonia ezingeni lokushisa eliphezulu. Leli khono libaluleke kakhulu ekukhiqizweni kwezikhunta zamagobolondo, izinto zokubopha amabhuleki, namasondo okugaya, lapho ukuqiniswa okulawulwayo kubalulekile ukuze kufezekiswe izakhiwo eziqondile zezinto. Ukusetshenziswa kwe-hexamine njenge-ejenti yokuqiniswa kudlulela nasembonini yerabha, lapho isebenza njenge-accelerator ye-vulcanization futhi njenge-donor ye-formaldehyde ekukhiqizweni kwezinto zerabha ezihlala njalo, ezimelana nokushisa. Ngaphandle kwezinsipho, zombili lezi zikhemikhali zithola izicelo ezinkulu emkhakheni wezokwelapha: i-paraformaldehyde isetshenziswa njenge-sterilant, i-disinfectant, kanye ne-tissue fixative, kanti i-hexamine iyisithako esisebenzayo emithini yezifo zomgudu womchamo futhi iyisikhathi esiphakathi ekuhlanganisweni kwezidakamizwa ze-sulfonamide nezinye izinto ezinamandla.

Embonisweni yezemithi, i-paraformaldehyde iyisisekelo esibalulekile ekukhiqizeni izibulala-zinambuzane, izibulala-zikhunta, nezibulala-zinambuzane, lapho isebenza njengomthombo we-formaldehyde ekwenzeni izithako ezisebenzayo njenge-glyphosate nezinye izinhlanganisela ze-organophosphorus. I-hexamine isetshenziswa njengesivimbeli sokugqwala ezixazululweni zokuhlanza ezine-asidi futhi njengesishukumisi ekwenzeni ama-emulsion athile ezibulala-zinambuzane, isebenzisa amandla ayo okunciphisa imikhiqizo ye-asidi nokugcina ibhalansi ye-pH. Ukusetshenziswa kwe-hexamine kwezolimo kuphinde kunwetshwe endimeni yayo njengomthombo we-nitrogen ezitshalweni ezikhulula kancane, okunikeza indlela yokukhulula kancane ethuthukisa ukusebenza kwezinsimbi nokunciphisa ukudlula kwemvelo. Ezinye izicelo zezimboni ze-paraformaldehyde zihlanganisa ukusetshenziswa kwayo njengesibulala-magciwane ekulimeni izinkukhu, njengesibulala-magciwane ekucubunguleni kabusha izinto zokwelashwa, kanye njenge-agent yokugcoba ekucubunguleni isikhumba. I-hexamine iphinde isetshenziswe ekukhiqizeni amakhemikhali ezithombe, iziqhumane (njengengxenye ye-RDX nezinye izinto ezinamandla), kanye nama-antioxidants enjoloba. Ukusebenza okuhlukahlukene kwamakhemikhali womabili kugcizelela ukubaluleka kwawo njengezinto eziyisisekelo ezixhumanisa uchungechunge lokuhlinzekwa kwamakhemikhali emhlabeni wonke, futhi amabhizinisi aqonda lezi zicelo angakwazi ukufanisa kangcono izindlela zawo zokuthola izinto nezidingo zawo zokukhiqiza. Ezinkampanini ezifuna ukuqinisekisa izinto ezithembekile zalezi zinto ezibalulekile, ukuhlola okupheleleIMIKHIQIZO okunikezwa abakhiqizi abasungulwe kunikeza indawo yokuqala ewusizo yokuhlola ikhwalithi nokutholakala.

Imakethe yomhlaba wonke ye-paraformaldehyde ibone ukukhula okuqhubekayo emashumini eminyaka adlule, okushukumiswa ikakhulukazi ukwanda kwesidingo ezimbonini zokwakha, zezimoto, nezokagesi ezisebenzisa izinsimbi ze-phenolic ne-urea-formaldehyde. Njengamanje ngo-2025, isifunda sase-Asia-Pacific sinengxenye enkulu kokubili ekukhiqizeni nokusetshenziswa, lapho i-China yodwa inikela ngaphezu kuka-40% wokukhiqizwa kwe-paraformaldehyde emhlabeni. Isidingo se-hexamine silandela amaphethini afanayo ezindaweni, izimboni ezinkulu ezisebenzisa zihlanganisa ukukhiqizwa kwezinsimbi, ukuhlanganiswa kwemithi, kanye nokukhiqizwa kwezinto zokulima. Emashumini eminyaka asanda kwenzeka, ukuphazamiseka kwezinto ezithunyelwayo okubangelwa ukungazinzi kwezintengo zezinto zokusetshenziswa, ukushintshashintsha kwezindleko zamandla, kanye nezinkinga zokuhambisa izimpahla kuholele ekuqinekweni kwemakethe ngezikhathi ezithile, ikakhulukazi ezinhlobonhlobo eziphakeme kakhulu ezisetshenziswa emithini kanye nezinzuzo ezikhethekile. Amanani omabili amakhemikhali ahambisana kakhulu nezindleko ze-methanol, okuyisisekelo esiyinhloko se-formaldehyde, kanye nokutholakala kwegesi yemvelo, elisetshenziswa njengophele umsebenzi ezindaweni eziningi zokukhiqiza. Lapho amanani e-methanol enyuka, izindleko zokukhiqiza i-formaldehyde ziyanda, futhi lezi zindleko zidluliselwa ngaphandle kokungabaza ku-paraformaldehyde kanye nabathengi be-hexamine. Ngaphezu kwalokho, imithetho yezemvelo ezindaweni ezinkulu zokukhiqiza, njenge-Yangtze River Delta kanye ne-North China Plain, iphoqe izimboni ezindala, ezingasebenzi kahle ukuthi zinciphise ukukhiqiza noma zivaleleke ngokuphelele, okwengeza ekulinganiselweni kokuhlinzekwa nokusekelwa amanani aphezulu.

Ngokubheka umlando wakamuva wentengo, i-paraformaldehyde (91-93% ubuhlanzekile) ithengiswe cishe kusuka ku-$580 kuye ku-$720 nge-metric ton FOB China, kuyilapho i-hexamine (99% ubuhlanzekile) ibiza phakathi kuka-$1,050 no-$1,400 nge-metric ton, kuye ngesigaba nezidingo zokupakisha. Umehluko wentengo phakathi kokuthengiswa kwasekhaya eChina kanye nezimakethe zokuthekelisa ukhulile njengoba izindleko zokuhamba zomhlaba sezizinzile ngemuva kobhubhane. Ngokwesidingo, ukululama komkhakha wezimoto kanye nokwanda kokusebenzisa imali ezindaweni ezithuthukayo kulindeleke ukuthi kusekele ukukhula okuqhubekayo ekusetshenzisweni kwe-resin, okuzophinde kuholele esidingweni se-paraformaldehyde ne-hexamine. Kodwa-ke, ukucindezelwa kokushintshwa kwezinye izinto ezisiza ukuqina kanye nemithombo ye-formaldehyde esekelwe kubhayoloji kunganciphisa ukukhula ezingxenyeni ezithile esikhathini eside. Kubathengi, ukuhlala unolwazi ngalezi zimo zemakethe kubalulekile ukuze kuvunyelwane ngezinkontileka ezinhle futhi kuphathwe ubungozi bokuthenga. Ukuqonda okujulile ngokulingana kokuhlinzekwa nokufunwa, kuhambisana nombono ocacile wezindleko zezinto zokusetshenziswa kanye nentuthuko yemithetho, kunika amandla amabhizinisi ukuthi enze izinqumo zokuthenga eziqinisekile. Ukubambisana nomphakeli ogcina izinqubomgomo zentengo ezicacile futhi ohlinzeka ngolwazi lwemakethe, njenge-Hebei Jintaida Chemical Co., Ltd., kungaba yinzuzo enkulu ekuhambeni kule ndawo eyinkimbinkimbi. Ukuze uthole ulwazi olwengeziwe ngamakhono enkampani nendlela yayo yemakethe,MAYELANA NATHI ikhasi lichaza ifilosofi yabo yokusebenza nokuzibophezela kwabo kwekhwalithi.

Ukukhetha umphakeli ofanele we-paraformaldehyde noma i-hexamine kudinga ukuhlola izinto eziningi ngaphandle nje kokuqhathanisa amanani, ngoba ikhwalithi nokungaguquguquki kwalezi zikhemikhali kuthinta ngqo ukusebenza kokukhiqiza okulandelayo nokusebenza komkhiqizo wokugcina. Into yokuqala ebalulekile ikhwalithi yomkhiqizo nokuhambisana nemininingwane: umphakeli onokwethenjelwa kufanele akwazi ukuletha impahla ehlangabezana njalo nokuhlanzeka okudingekayo, usayizi wezinhlayiya, okuqukethwe umswakama, nemikhawulo yokungcola kuwo wonke amaqoqo amaningi. Abathengi kufanele bacele izitifiketi zokuhlaziya kusuka kumaqoqo amaningi futhi, uma kungenzeka, bahlole uhlelo lokuphatha ikhwalithi lomphakeli nezindawo zokukhiqiza ukuze baqinisekise ukuthi izinqubo zokukhiqiza zilawulwa. Into yesibili ukuzinza kokuhlinzekwa nokwethembeka kwesikhathi sokulethwa, okubaluleke kakhulu ezinkampanini ezisebenzisa izinqubo zokukhiqiza eziqhubekayo futhi ezingakwazi ukubekezelela ukushoda okungalindelekile kwezinto zokusetshenziswa. Umphakeli onemigqa yokukhiqiza eminingi, izinto zokusetshenziswa eziyimfihlo, kanye nenethiwekhi yezokuthutha eqinile ubekwe kangcono ukugcina ukulethwa ngisho nasezikhathini zokuhlukunyezwa kwemakethe noma ukwanda kwesidingo sesizini. Into yesithathu ukwesekwa kwezobuchwepheshe kanye nolwazi lwezicelo: abaphakeli abaqonda ukuthi imikhiqizo yabo isetshenziswa kanjani ekwenzeni i-resin, ekukhiqizeni imithi, noma ekwenzeni izidakamizwa zezolimo bangahlinzeka ngesiqondiso esibalulekile ekusebenzeni kahle, izimo zokugcina, nokulungiswa kwezicelo. Lobu budlelwane kwezobuchwepheshe bunganciphisa ukuzama nokuhluleka ekuthuthukisweni kwezinqubo futhi kusize abathengi ukuthi bathole isikhathi esisheshayo sokufika emakethe kwemikhiqizo emisha.

Izinto ezingeziwe okufanele zicatshangelwe zihlanganisa irekhodi lomhlinzeki lokuthobela imithetho, izitifiketi zawo zemvelo nezokuphepha, kanye nekhono lawo lokuhlinzeka ngokupakisha okwenziwe ngokwezifiso noma ukuguqulwa komkhiqizo. Abahlinzeki abanezinhlobonho ze-ISO 9001, ISO 14001, kanye ne-OHSAS 18001 babonisa indlela ehlelekile yekhwalithi, ukuphathwa kwemvelo, kanye nempilo nokuphepha emsebenzini, okunciphisa ubungozi bokuphazamiseka kokuhlinzekwa ngenxa yezinyathelo zomthetho noma izehlakalo. Kubathengi abagxile ekuthekeliseni, isipiliyoni somhlinzeki ngemibhalo yezohwebo yamazwe ngamazwe, ukucaciswa kwamasiko, kanye nokuthunyelwa kwezindlela eziningi kubalulekile futhi. I-Hebei Jintaida Chemical Co., Ltd. ibonisa izimfanelo eziningi zalezi zinto ngokugcina amazinga aphezulu ekhwalithi, ukutshala imali ocwaningweni nasekuthuthukisweni, nokwakha ubudlelwano besikhathi eside namakhasimende emhlabeni wonke. Ithimba labo elizinikezele lisebenza eduze namakhasimende ukuze liqonde izidingo ezithile futhi lihlinzeke ngezixazululo ezenziwe ngokwezifiso ezibhekana nezidingo ezihlukile zokusebenza. Izinkampani ezithanda ukuhlola ubudlelwano zingavakashela kuXHUMANA NATHI ikhasi ukuze kuqalwe ingxoxo mayelana nezidingo zabo zokuthola izinto. Ekugcineni, ukukhethwa komphakeli kufanele kubhekwe njengesinqumo samasu esilinganisa izindleko, ikhwalithi, ukwethembeka, kanye nenkonzo, ngoba ubudlelwano obufanele bungaba yinzuzo yokuncintisana esekela ukukhula kwebhizinisi iminyaka eminingi.

Imboni yamachibi iphansi ngokuguquguquka okukhulu okubangelwa imithetho yezemvelo eqinile, ukwanda kwesidingo semikhiqizo eqhubekayo, kanye nomzamo womhlaba wonke wokuba namandla angangcolisi umoya. Kubakhiqizi be-paraformaldehyde ne-hexamine, lezi zimo zibeka izinselele namathuba. Enye yezimo ezinkulu ukwamukelwa okwandayo kwezimiso ze-green chemistry, ezikhuthaza ukusetshenziswa kwezinto ezivuselelwayo, izinqubo ezisebenzisa kahle amandla, kanye nezindlela ezinganabuthi lapho kungenzeka khona. Emkhakheni we-formaldehyde derivatives, lokhu kuholele ekucwaningeni nge-methanol esekelwe ku-bio-etholwe ku-biomass noma i-carbon dioxide eboshiwe njengento yokukhiqiza i-formaldehyde, okuzonciphisa umthelela we-carbon kuwo wonke umnyombo wokuhlinzekwa. Ngaphezu kwalokho, abakhiqizi batshala imali ezinhlelweni zamanzi ezivalekile, ukubuyisa ukushisa okulahlekile, kanye nobuchwepheshe be-catalytic oxidation ukuze kuncishiswe ukukhishwa kwezinto ezingena umoya (VOCs) futhi kuncishiswe umthelela wezemvelo emisebenzini yabo. Ababusi baseShayina baphinde baphakamisa amazinga aqine kakhulu okukhishwa kwezitshalo zamakhemikhali, okuhlanganisa nokuqapha okuyimpoqo ukukhishwa kwe-formaldehyde ne-ammonia, okuye kwasheshisa ukuqedwa kwamandla okukhiqiza aphelelwe isikhathi futhi kwakhuthaza ukuhlanganiswa embonini. Lezi zintuthuko zemibuso zithanda abakhiqizi abakhulu, abanemali eyanele, abakwazi ukukhokhela izindleko zokuhambisana ezidingekayo futhi badlulisele izinzuzo zosayizi kumakhasimende abo.

Enye into ebalulekile ekhulayo imfuno enkulu yama-grade aphezulu acwebile futhi enezinhlobo ezikhethekile ze-paraformaldehyde ne-hexamine ezisetshenziswa ezindaweni ezithuthukile njengezinto zokwakha izinto zikagesi, izinto zokwakha imithi, kanye nezinto eziqinile kakhulu. Njengoba abasebenzisi beqhubeka befuna izinto eziqine kakhulu nezimile, abahlinzeki bayacelwa ukuthi bathuthukise amakhono abo okuhlaziya futhi bahlanze izindlela zabo zokukhiqiza. Ngenxa yalokhu, izinkampani ezifana ne-Hebei Jintaida Chemical Co., Ltd. ziye zandisa imizamo yazo yocwaningo nentuthuko ukuze zithuthukise imikhiqizo eyenziwe ngokwezifiso ebhekana nezidingo ezithile zamakhasimende, futhiUkuqamba Okusha Nokuthuthukisaamaphuzu avelele ekhasini abonisa ezinye zezinto ezintsha ezisenzakalayo. Umnotho oyindilinga nawo unomthelela embonini, ngokukhula kwesithakazelo ekugayeni kabusha i-paraformaldehyde ne-hexamine emadoti embonini bese izisebenzisa njengezinto zokwakha imijikelezo emisha yokukhiqiza. Sibheke phambili, imakethe yala makhemikhali abalulekile kulindeleke ukuthi ikhule ngesilinganiso esingu-3% kuya ku-5% unyaka nonyaka kuze kube ngu-2030, kusekelwa isidingo esiqinile esivela emazweni asakhula kanye nokufakwa kwemikhiqizo entsha esikhundleni sezinto zakudala. Izinkampani ezihambisana namasu azo okuphakela nalezi zimo—ngokubambisana nabaphakeli abanomthwalo wemfanelo kwezemvelo, ukutshala imali ekuthuthukisweni komkhiqizo, nokwakha ukumelana kwezinto—zizoba sesimweni esingcono kakhulu sokuphumelela embonini yamakhimikhali eshintshashintshayo. Ukuthola umbono ophelele wezixazululo ezitholakalayo namagugu enkampani, ukuvakashelaIKHAYA ikhasi lihlinzeka ngendawo elula yokuqalisa ukuze ufunde kabanzi mayelana nendlela abaholi bemboni ababhekana ngayo nalezi zinguquko eziguqulayo.