Ngwa dị ukwuu na atụmanya mmepe nke Sodium Cyanide na ụlọ ọrụ

sodium cyanide (NaCN), dị ka akụrụngwa kemịkalụ kemịkalụ na-egbu egbu ma na-arụ ọrụ nke ọma, na-arụ ọrụ enweghị ike dochie anya n'ọhịa ụlọ ọrụ n'ihi akụrụngwa kemịkalụ pụrụ iche. Ngwa ya na-ekpuchi ọtụtụ ụlọ ọrụ igodo, sitere na ndị Mwepụta nke ọla dị oké ọnụ ahịa ka mma chemical njikọ. Otú ọ dị, na tightening nke gburugburu ebe obibi iwu ụkpụrụ na ịrị elu nke green technology, ọdịnihu mmepe nke sodium cyanide na-eche ihe ịma aka na ohere ọhụrụ ihu.

I. Isi Ngwa Mpaghara nke Sodium Cyanide

1. Mwepụta nke ọla ndị dị oké ọnụ ahịa na nhazi mineral

Sodium cyanide bụ isi reagent na-egwupụta ọla edo na ọlaọcha. Site na usoro cyanidation, ọ nwere ike ịmepụta ogige soluble na ọla edo na ọla ọcha, na-eme ka mwepu ọla dị oke ọnụ ahịa nke ọma site na ọla ndị dị ala. Nhazi mmeghachi omume bụ nke a:

4Au + 8NaCN + O₂ + 2H₂O → 4NaAu(CN)₂ + 4NaOH

N'agbanyeghị ihe ize ndụ nke nsị, usoro cyanidation ka na-edepụta ihe karịrị 80% nke oke mmepụta ọla edo zuru ụwa ọnụ n'ihi ọnụ ala ya na nnukwu mgbake.

2. Electroplating na Surface Ọgwụgwọ

N'ime ụlọ ọrụ electroplating, sodium cyanide, dị ka ihe mgbagwoju anya, nwere ike ime ka ion metal guzosie ike (dị ka ọla kọpa, zinc, na cadmium) iji hụ na oyi akwa na akwa akwa. Dịka ọmụmaatụ, usoro ntinye zinc nke cyanide nwere ike imeziwanye nguzogide corrosion nke ígwè. Otú ọ dị, n'ihi nrụgide nchebe gburugburu ebe obibi, teknụzụ electroplating na-enweghị cyanide (dị ka zincate zinc plating) na-eji nwayọọ nwayọọ dochie usoro omenala.

3. Organic Synthesis na Pharmaceutical Intermediates

Sodium cyanide bụ ihe dị mkpa akụrụngwa maka njikọ nke nitrile ogige. Site na mmeghachi omume nnọchi nucleophilic, enwere ike iwebata ndị otu CN⁻ n'ime ụmụ irighiri ihe iji mepụta etiti etiti dị ka acrylonitrile (maka eriri sịntetik) na adiponitrile (maka nylon 66). Ọmụmaatụ:

CH₂=CHCH₂Cl + NaCN → CH₂=CHCH₂CN + NaCl

N'ebe a na-emepụta ọgwụ, sodium cyanide na-etinye aka na njikọ nke vitamin B12. ọgwụ mgbochi ọrịa kansa, na ihe ndị ọzọ.

4. Ọgwụ mgbochi na ụmụ ahụhụ

Enwere ike iji sodium cyanide kwadebe ụdị ahụhụ dị iche iche, dị ka fenvalerate (a pyrethroid ụmụ ahụhụ). Mwepụta ya, thiocyanate (SCN⁻), na-ejikwa ahịhịa na fungicides.

5. Ngwa ụlọ ọrụ ndị ọzọ

• Nchacha igwe: Iwepu oyi akwa oxide n'elu igwe;

• Ihe mgbochi nhazi nke ịnweta: Ịgbanwe omume flotation nke mineral;

• Precursor nke Chemical ngwa agha: Ngwa nwere mmetụta nke chọrọ njikwa siri ike.

II. Atụmanya mmepe: Ihe ịma aka na ohere dị n'otu

1. Nchekwa gburugburu ebe obibi na nrụgide nchekwa

Nnukwu nsi nke sodium cyanide amanyela ụwa ime ka nlekọta siri ike. Dịka ọmụmaatụ, EU's Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) Regulation depụtara ya dị ka ihe nwere oke nchegbu (SVHC), na-achọ ka ụlọ ọrụ kpughee ozi ojiji. Ihe mberede ntapu nwere ike bute ọdachi gburugburu ebe obibi (dị ka mgbawa nke ọdụ ụgbọ mmiri Tianjin na China na 2015), na-anya ụlọ ọrụ ka ọ gbanwee gaa n'ebumnobi nke "ihe ọkụkụ efu".

2. Nkà na ụzụ ọhụrụ na Nhọrọ Ngwọta

• Mmasị nke usoro Cyanide na-adịghị:

• Mwepụta ọla edo: Teknụzụ dị ka thiourea leaching na usoro bromination na-eji nwayọọ nwayọọ na-eto;

• Eletriki: Iji ihe mgbagwoju anya dị ka citrates na ethylenediamine dochie cyanides;

• Ụzọ Synthesis Green: Ịmepụta ogige nitrile site na usoro biocatalysis (dịka iji nitrile hydratase na-emepụta acrylamide);

• Model Economy okirikiri: Ịmepụta teknụzụ mgbake cyanide (dị ka nkewa akpụkpọ ahụ na mgbanwe ion) iji belata oriri.

3. Enwere ike itolite na Ubi agbakwunyere ọnụ ahịa dị elu

• Ngwa ọkụ ọhụrụ: A na-eji sodium cyanide mee ihe na njikọ nke precursors maka ihe cathode nke batrị lithium-ion (dị ka lithium nickel cobalt manganate);

• Igwe ọkụ eletrik: A na-eji ya dị ka ihe na-emepụta ihe na-emepụta semiconductor wafers;

• Ndị na-ahụ maka ọgwụ: Site na mmụba nke nyocha na mmepe ọgwụ ọhụrụ, ọchịchọ nke sodium cyanide na kemịkal dị mma nwere ike ịga n'ihu na-eto eto.

4. Mpaghara Market iche iche

• Mba ndị mepere emepe: Ọchịchọ a na-achọsi ike, na-elekwasị anya na nkwalite teknụzụ na nnabata gburugburu ebe obibi;

• Ahịa Obere: Mgbasawanye nke akụrụngwa na ụlọ ọrụ mmepụta ihe na-akpalite ọchịchọ, dị ka mmepe ngwuputa ọla edo na Ndịda Ebe Ọwụwa Anyanwụ Eshia na Africa.

III. Ọdịnihu na nzaghachi ụlọ ọrụ

1.Technological Upgrades: Mmepe usoro na obere mkpokọta sodium cyanide na njikarịcha ọnọdụ mmeghachi omume iji belata ojiji;

2.Digital Management: Nleba anya n'ezie nke iji sodium cyanide site na Ịntanetị nke Ihe (IoT) iji kwalite nchekwa;

3. Nduzi ndu: Gọọmenti kwesịrị imeziwanye ọchịchọ ụlọ ọrụ mmepụta ihe na ihe mgbaru ọsọ nchebe gburugburu ebe obibi ma kwalite "Njikwa Cyanide na-arụ ọrụ" (dị ka International Cyanide Management Code, ICMI);

4.Nkwukọrịta ọha: Na-eme ka nghọta nke ụlọ ọrụ dị ike ma na-ebelata echiche mmekọrịta mmadụ na ibe ya na cyanide.

mmechi

Uru mmepụta ihe nke sodium cyanide na-ejikọta ya na ihe ize ndụ nke nsị ya. N'ọdịnihu, mmepe ya ga-adabere na mmetụta synergistic nke nkà na ụzụ ọhụrụ na nlekọta siri ike. Ọ bụ ezie na ọ na-eche nrụgide ngbanwe ihu na mpaghara ụfọdụ, enweghị ike dochie ya na ụlọ ọrụ ndị nwere ọnụ ahịa dị elu, yana ọganihu na usoro akwụkwọ ndụ akwụkwọ ndụ, ka nwere ike imeghe ya ohere ọhụrụ. Dịka ihe ndị ọzọ dị ize ndụ na ụlọ ọrụ kemịkalụ, ụzọ maka mmepe na-adigide nke sodium cyanide dị na "ịchịkwa ihe egwu na iwepụta uru".