Urea, inozivikanwawo seurea kana carbamide, ine chimiro chemakemikari CH4N2O kana CO (NH2) 2. Iro organic compound inoumbwa nekabhoni, nitrogen, oxygen, uye hydrogen, uye ikristaro chena.Imwe yezvakareruka organic komisheni ndiyo huru ine nitrogen-ine yekupedzisira chigadzirwa cheprotein metabolism uye kuora mumhuka dzinoyamwisa nedzimwe hove.Sefetiraiza isina kwayakarerekera, urea inokodzera ivhu rakasiyana siyana uye zvirimwa.Zviri nyore kuchengetedza, zviri nyore kushandisa, uye zvine zvishoma zvinokanganisa ivhu.Ikemikari nitrogen fetiraiza ine huwandu hukuru hwekushandisa uye yakanyanya nitrogen yemukati.Urea inogadzirwa pasi pemamwe mamiriro uchishandisa ammonia uye carbon dioxide muindasitiri.
Urea inogona kuita nemaasidhi kuita munyu.Iyo ine hydrolysis.Pakupisa kwakanyanya, kuita kwe condensation kunogona kuitwa kugadzira biuret, triuret, uye cyanuric acid.Kupisa kusvika ku160 ℃ yekuora, kugadzira ammonia gasi uye kuishandura kuita isocyanate.Nekuti chinhu ichi chiri muweti yemunhu, chinodaidzwa kuti urea.Urea ine 46% nitrogen (N), inova iyo yakanyanya nitrogen yemukati pakati peakasimba nitrogen fetereza.
Urea inogona kuita hydrolyze kuburitsa ammonia nekabhoni dhayokisaidhi pasi pekuita kweasidhi, mabhesi, uye maenzayimu (asidhi nemabhesi zvinoda kudziyisa).
Nokuda kwekusagadzikana kwemafuta, kupisa kusvika 150-160 ℃ kunobvisa kune biuret.Copper sulfate inopindirana nebiuret mune yepepuru uye inogona kushandiswa kuziva urea.Kana ikakurumidza kupisa, ichave yakasvibiswa uye trimeric kuumba nhengo nhanhatu dze cyclic compound, cyanuric acid.
Acetylurea uye diacetylurea inogona kugadzirwa nekuita neacetyl chloride kana acetic anhydride.
Pasi pekuita kwe sodium ethanol, inopindirana nediethyl malonate kuti ibudise malonylurea (inozivikanwawo se barbituric acid, nekuda kwe acidity yayo).
Pasi pechiito che alkaline catalysts senge ammonia, inogona kuita ne formaldehyde uye condense mu urea formaldehyde resin.
React ne hydrazine hydrate kugadzira aminourea.
-Molecular uremu: 60.06 g / mol
-Density: 768 kg/m3
-Kunyungudika: 132.7C
-Kunyunguduka kupisa: 5.78 kusvika 6cal / gr
-Kupisa kupisa: 2531 makorikori / gramu
- Hunyoro hwakakomba humidity (30 ° C): 73%
-Salinity index: 75.4
-Corrosiveness: Inoparadza kune kabhoni simbi, asi isinganyanyi kuodza kune aluminium, zinc, uye mhangura.Haisi kukanganisa kugirazi uye simbi yakakosha.
1. Kana urea ikachengetwa zvisina kufanira, zviri nyore kusveta hunyoro nekukura, zvichikanganisa kunaka kwepakutanga kweurea uye kukonzera kurasikirwa kwehupfumi kune varimi.Izvi zvinoda kuti varimi vachengete urea nemazvo.Usati washandisa, zvinodikanwa kuchengetedza urea yekurongedza bhegi yakasimba.Panguva yekufambisa, inofanirwa kubatwa nekuchenjerera, yakachengetedzwa kubva kunaya, uye kuchengetwa munzvimbo yakaoma, ine mhepo yakanaka ine tembiricha iri pasi pe20 ℃.
2. Kana yakachengetwa muhuwandu, matanda emapuranga anofanira kushandiswa kuvhara pasi kweanenge masendimita makumi maviri, uye panofanira kuva nemukaha unodarika 50 centimita pakati pepamusoro nedenga kuti zvive nyore kupinza uye kupera kwemvura.Mugero unofanirwa kusiiwa pakati pematanho.Kuita kuti kuongorora uye kufefetedza.Kana iyo urea yakatovhurwa isati yashandiswa, zvakakosha kuvhara muromo webhegi panguva yakakodzera kuti zvive nyore kushandisa gore rinotevera.
3. Dzivisa kusangana neganda nemaziso.
Fetereza: 90% yeurea inogadzirwa inoshandiswa sefetireza.Inowedzerwa muvhu uye inopa nitrogen yemiti.Low biuret (isingasviki 0.03%) urea inoshandiswa sefoliar fetireza.Inonyungudika mumvura uye inoshandiswa kumashizha emiti, kunyanya michero uye citrus.
Urea fetireza ine mukana wekupa yakakwira nitrogen yemukati, iyo yakakosha kune chirimwa metabolism uye yakanangana nenhamba yemadzinde nemashizha anotora chiedza chephotosynthesis.Mukuwedzera, nitrogen inowanikwa muvhitamini nemapuroteni, uye inobatana neprotein yehuwandu hwezviyo.
Urea inoshandiswa mumhando dzakasiyana dzezvirimwa.Fertilization inofanirwa nekuti ivhu rinorasikirwa nenitrogen yakawanda mushure mekukohwa.Urea particles inoshandiswa muvhu, iyo inofanirwa kushanda zvakanaka uye yakapfuma mubhakitiriya.Chikumbiro chinogona kuitwa panguva yekudyara kana kutanga.Zvadaro, urea inogadziriswa hydrolyzed uye yakaora.
Kungwarira kunofanirwa kutorwa kana uchiisa urea zvakanaka muvhu.Kana ikashandiswa pamusoro, kana kuti ikasaiswa muvhu kuburikidza nekushandiswa kwakafanira, kunaya kwemvura, kana kudiridza, ammonia inopfava uye kurasikirwa kunokosha zvikuru.Kushaikwa kwenitrogen muzvirimwa kunoratidzwa mukuderera kweshizha nzvimbo uye kuderera kwekuita photosynthetic.
Kusvudzira mashizha: Kusvira kwemashizha itsika yekare, asi kazhinji kacho, kushandiswa kwezvokudya zvine chekuita nevhu kudiki, kunyanya pakuwanda.Zvakadaro, mamwe marekodhi epasi rose anoratidza kuti kushandisa urea yakaderera urea kunogona kuderedza huwandu hwefetireza inoiswa muvhu pasina kukanganisa kushanda, ukuru, uye kunaka kwemichero.Tsvakiridzo yakaratidza kuti kupfapfaidza foliar neurea shoma kunoshanda sekupfapfaidza ivhu.Pamusoro pezvirongwa zvine chekuita nefotereza, izvi zvinosimbisa tsika yekushandisa fetereza yakabatana nemimwe mishonga yekurima.
Makemikari nemapurasitiki: Urea inowanikwa mune zvinonamira, mapurasitiki, resin, ingi, mishonga yemishonga, uye yekupedzisa machira, mapepa, uye simbi.
Livestock dietary supplement: Urea inosanganiswa mukudya kwemombe uye inopa nitrogen, iyo yakakosha pakugadzira mapuroteni.
Kugadzirwa kweresin: Urea formaldehyde resin uye mamwe maresheni ane akasiyana mashandisirwo muindasitiri, sekugadzira plywood.Anoshandiswawo muzvizoro uye pendi.
Chemwin inogona kupa huwandu hwakawanda hwemahydrocarbon akawanda uye makemikari zvinonyungudutsa kune vatengi vemaindasitiri.Izvi zvisati zvaitika, ndapota verenga zvinotevera ruzivo rwekuita bhizinesi nesu:
1. Chengetedzo
Chengetedzo ndiyo inonyanya kukosha kwatiri.Pamusoro pekupa vatengi ruzivo nezve mashandisiro akachengeteka uye ane hushamwari ezvigadzirwa zvedu, isu takazvipirawo kuona kuti njodzi dzekuchengetedza dzevashandi nemakondirakiti dzadzikiswa kuita shoma inonzwisisika uye inogoneka.Naizvozvo, isu tinoda kuti mutengi ave nechokwadi chekuti kurodha kwakakodzera uye kuchengetedza kuchengetedza zviyero zvinosangana tisati tasvitsa (ndapota tarisa kune HSSE appendix muhuwandu hwematemu uye mamiriro ekutengesa pazasi).Nyanzvi dzedu dzeHSSE dzinogona kupa gwara pane aya mazinga.
2. Delivery nzira
Vatengi vanogona kuraira uye kuendesa zvigadzirwa kubva kuchemwin, kana kuti vanogona kugamuchira zvigadzirwa kubva kune yedu kugadzira chirimwa.Nzira dziripo dzekutakura dzinosanganisira rori, njanji kana multimodal kutakura (zvakasiyana mamiriro anoshanda).
Panyaya yezvinodiwa nevatengi, tinogona kutsanangura zvinodikanwa zvemabhaji kana matangi uye kushandisa yakakosha kuchengetedza / kuongorora zviyero uye zvinodiwa.
3. Minimum order yakawanda
Kana iwe ukatenga zvigadzirwa kubva pawebhusaiti yedu, iyo yakaderera odha huwandu i30 matani.
4.Payment
Iyo yakajairika nzira yekubhadhara inobviswa zvakananga mukati memazuva makumi matatu kubva painvoice.
5. Delivery zvinyorwa
Mapepa anotevera anopiwa kune imwe neimwe yekutumira:
· Bill of Lading, CMR Waybill kana rimwe gwaro rekufambisa rakakodzera
· Sitifiketi Yekuongorora kana Conformity (kana zvichidikanwa)
· Zvinyorwa zvine chekuita neHSSE zvinoenderana nemitemo
· Zvinyorwa zvetsika zvinoenderana nemirairo (kana zvichidikanwa)
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