CS208818B1 - Manufactiring process of liquid fertilizers based on urea and ammonium nitrate - Google Patents
Manufactiring process of liquid fertilizers based on urea and ammonium nitrate Download PDFInfo
- Publication number
- CS208818B1 CS208818B1 CS432678A CS432678A CS208818B1 CS 208818 B1 CS208818 B1 CS 208818B1 CS 432678 A CS432678 A CS 432678A CS 432678 A CS432678 A CS 432678A CS 208818 B1 CS208818 B1 CS 208818B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- urea
- ammonium nitrate
- production
- solution
- mother liquors
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims description 15
- 239000004202 carbamide Substances 0.000 title claims description 15
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 title claims description 10
- 239000007788 liquid Substances 0.000 title claims description 9
- 239000003337 fertilizer Substances 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 5
- 230000008569 process Effects 0.000 title claims description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 12
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 7
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 7
- 229910017604 nitric acid Inorganic materials 0.000 claims description 7
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 claims description 4
- 238000003776 cleavage reaction Methods 0.000 claims description 4
- 230000007017 scission Effects 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 239000012452 mother liquor Substances 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 25
- 239000000243 solution Substances 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- -1 alkali metal nitrite Chemical class 0.000 description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 4
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 4
- JUCCBFMAJUMIFJ-UHFFFAOYSA-O [N].[NH4+].[O-][N+]([O-])=O Chemical compound [N].[NH4+].[O-][N+]([O-])=O JUCCBFMAJUMIFJ-UHFFFAOYSA-O 0.000 description 3
- 229910001959 inorganic nitrate Inorganic materials 0.000 description 3
- 125000001477 organic nitrogen group Chemical group 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 230000009935 nitrosation Effects 0.000 description 2
- 238000007034 nitrosation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 description 2
- 239000004317 sodium nitrate Substances 0.000 description 2
- 235000010344 sodium nitrate Nutrition 0.000 description 2
- 235000010288 sodium nitrite Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001863 plant nutrition Effects 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- AGGKEGLBGGJEBZ-UHFFFAOYSA-N tetramethylenedisulfotetramine Chemical compound C1N(S2(=O)=O)CN3S(=O)(=O)N1CN2C3 AGGKEGLBGGJEBZ-UHFFFAOYSA-N 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fertilizers (AREA)
Description
(54) sposob výroby kvapalných hnojív na báze močoviny a dusičnanu amonného(54) method of production of liquid fertilizers based on urea and ammonium nitrate
Tento vynález rieši výrobu kvapalných hnojív na báze močoviny a dusičnanu amonného a využitím upravených matečných luhov, odpadajúcích z výroby 1,5-endometylén-3,7-dinitrózo-1,3,5,7-tetraazacyklooktanu, ako rozpúšťadla komponent.The present invention solves the production of liquid urea and ammonium nitrate fertilizers and utilizing modified mother liquors resulting from the production of 1,5-endomethylene-3,7-dinitroso-1,3,5,7-tetraazacycloctoctan as a solvent component.
Pre priemyselnú produkciu 1,5_endometylén~3,7-dinitrózo-l,3,5,7-tetraazácyklooktánu, známého tiež pod názvom N,ft-dinitrózopentametylen-tetramín (DNPT), je z technickoekonomického hladiska najvýhodnéjšie nitrozačné štiepenie hexametyléntetramínu. Ako zdroj nitrozačného činidla sa takmer výhradně používá kombinácia minerálněj kyseliny a dusitanov alkalických kovov, alebo dusitanu vápenatého.For industrial production of 1.5 ~ _ endomethylene 3,7-dinitroso-l, 3,5,7-tetraazácyklooktánu, and also known as N, N-ft-dinitrózopentametylen tetramine (dNTP were used), is the most preferred aspect, the technical-nitrosating cleavage of hexamethylenetetramine. A combination of a mineral acid and an alkali metal nitrite or calcium nitrite is almost exclusively used as the source of the nitrosating agent.
Z hladiska kvality, výťažnosti a problematiky izolácie N,ft-dinitrózopentametyléntetramínu je pri nitrozačnom štiepení najoptimálnějšia aplikácia kombinácie kyseliny dusičnej a dusitanov alkalických kovov (Gries P., Harrov G.: Ber 1888, 21, 2737; Duden P., Scharff M. : Ann. 1895, 288, 218; Antoš K., Forman Z., Kristián Chem. zvěsti 1956, 10, 162; ČSSR autor, osvědč, č. 182 625; ČSSR autor, osvědč, č. 189 980 (alebo dusitanu vápenatého ČSSR autor, osvědč, č. 188 471).In terms of quality, yield and isolation of N, β-dinitrosopentamethylenetetramine, the most optimal application for nitrosation cleavage is the combination of nitric acid and alkali metal nitrites (Gries P., Harrov G .: Ber 1888, 21, 2737; Duden P., Scharff M.: Ann. 1895, 288, 218; Antoš K., Forman Z., Christian Chem. Rumors 1956, 10, 162; Czechoslovakia Author, Certificate, No. 182 625; Czechoslovakia Author, Certificate, No. 189 980 (or calcium nitrite of Czechoslovakia author, certificate, No. 188 471).
Vedlajšími produktami reakcie (to je matečnými lúhmi) sú v tomto případe vodné roztoky anorganického dusičnanu, formaldehydu a amoniových iónov a zostáva tu určité množstvo východzieho dusitanu, braného do reakcie ako pufrujúce a nitrozolýzu katalySS8 SIS zujúoe činidlo.The by-products of the reaction (i.e. mother liquors) in this case are aqueous solutions of inorganic nitrate, formaldehyde and ammonium ions, and there is a certain amount of starting nitrite taken into reaction as buffering and nitrosolysis of the SS8 SIS catalyzing agent.
V odpadajúoioh matečných lúhov je možné amoniakalizáciou formaldehyd previeať na hexametyléntetramín a takto získaný roztok použit ako rozpúšťadjo hexametyléntetramínu a dusitanu, braných do nitrozolýzy (čs. autor, osvědč, č. 191379).In the absence of mother liquors, the ammoniacalization of formaldehyde can be converted to hexamethylenetetramine and the solution thus obtained used as a solvent for hexamethylenetetramine and nitrite taken into nitrosolysis (cf. author, certificate no. 191379).
Z ekonomického hladiska je však výhodné do reakoie brat hexametyléntetramín vo formě čiastočne zahustenýoh reakčných zmesi po amoniakalizáoii vodného roztoku formaldehydu (Bourjol G.: Mem. poudre 1952, 34, 7) a podobné roztoky dusitanov, získané pósohením oxidov dusíka na vodné roztoky příslušných hydroxidov. Tu potom už nie je možné vyušitie odpadejúceho formaldehydu a dusitanu vo vlastiiej nitrozolýze hexametyléntetramínu.However, from an economic point of view, hexamethylenetetramine is partially reacted in the form of a partially concentrated reaction mixture after the ammoniacalization of an aqueous formaldehyde solution (Bourjol G .: Mem. Poudre 1952, 34, 7) and similar nitrite solutions obtained by contacting the oxides of nitrogen with aqueous solutions of the respective hydroxides. Here, it is no longer possible to use the outgoing formaldehyde and nitrite in the intrinsic nitrosolysis of hexamethylenetetramine.
Podobné, ako vynález čs. autor, osvědč, č. 199088, rieši tento vynález spracovanie matečných lúhov z výroby N,Ň-dinitrózopentametyléntetramínu na kvapalné hnojivo. Nežiadúoi dusitan je pri tom odstránený posobením kyseliny dusičnej a spolupčsobením formaldehydu (Z. Anal. Chem. 1913, 52, 21) a amóniovýoh iónov (Monatsch. Chem. 1953,Similar to the invention. author, certificate, no. 199088, the present invention solves the processing of mother liquors from the production of N, N-dinitrosopentamethylenetetramine into a liquid fertilizer. The undesired nitrite is removed by nitric acid deposition and by the action of formaldehyde (Z. Anal. Chem. 1913, 52, 21) and ammonium ions (Monatsch. Chem. 1953,
84. 829{ Japan Kokai 74 110, 148) pri zvýšenej teplote. Po amoniakalizáoii takto získanej reakčnej zmesi móže byť upravený obsah dusičnanov a vzniknutého hexametyléntetramínu odpařením časti vody a rezultujúoi roztok sa potom použije ako rozpúšťadlo komponent kvapalného hnojivá na báze močovino-amóniumnitrátového komplexu. Spraoovanie matečných lúhov z výroby N,ý-dinitrózopentametyléntetramínu podlá tohoto vynálezu nebolo doposial v literatuře popísané.84. 829 (Japan Kokai 74 110, 148) at elevated temperature. After ammoniaization of the reaction mixture so obtained, the content of nitrates and hexamethylenetetramine formed can be adjusted by evaporation of a portion of the water and the resulting solution is then used as a solvent of the urea-ammonium nitrate complex fertilizer component. Spraying of mother liquors from the production of N, N-dinitrosopentamethylenetetramine according to the present invention has not been described in the literature.
Výhody postupu podlá tohoto vynálezu oproti postupu popsáním v popise vynálezu k čs. autor, osvědč, č. 199 088 spočívajú v tom, že nie je nutné formaldehyd viazať před zahušťováním poměrně velkým prebytkom močoviny, na ktorej potom áalším tepelným namáháním roztoku vznikajú straty rozkladom, a Sálej že zahuštěný roztok anorganického dusičnanu a hexametyléntetramínu má pri danej teplote podstatné vyššiu fyzikálnu stabilitu než na ten istý stupeň zahuštěný roztok anorganického dusičnanu a močoviny a močovino-formaldehydovým kondenzátom.Advantages of the process according to the invention over the process described in the description of the invention to U.S. Pat. author, certificate, no. 199 088 is that it is not necessary to bind formaldehyde prior to thickening with a relatively large excess of urea, whereupon further thermal stress of the solution results in loss of decomposition; some degree of concentrated inorganic nitrate and urea solution and urea-formaldehyde condensate.
Spraoovanie matečných lúhov z výroby l,5-endometylén-3,7-dinitrózo-l,3,5,7-tetraazacyklooktanu v zmysle tohoto vynálezu likviduje toxicitu matečných lúhov a vedie ku zhodnoteniu odpadajúoeho anorganického dusičnanu z výroby pre výživu rastlin. Sekundárným účinkom je riešenie problematiky životného prostredia, ktorá súvisí s výrobou l,5-endometylén-3,7-dinitrózo-l,3,5,7-tetraazacyklooktánu.The treatment of mother liquors from the production of 1,5-endomethylene-3,7-dinitroso-1,3,5,7-tetraazacyclooctane within the meaning of the present invention eliminates the toxicity of the mother liquors and leads to the recovery of the inorganic nitrates which are removed from the plant nutrition production. The secondary effect is to deal with environmental issues related to the production of 1,5-endomethylene-3,7-dinitroso-1,3,5,7-tetraazacycloctocane.
Přiklad 1Example 1
K dispozícii holi matečné lúhy z výroby Ν,ϊί-dinitrózopentametyléntetramínu nitrozačným štiepením hexametyléntetramínu (vo formě zahuštěných reakčných zmesi po amoniakalizáoii vodného formaldehydu) pomocou kyseliny dusičnej a technického dusitanu sodného (získaného z vodného roztoku hydroxidu sodného a oxidov dusíka) nitrozolýza bola ukončovaná nsutralizáoiou celej reakčnej zmesi 20 %-ným hydroxidom sodným. 1000 ml týchto lúhov obsahovaloAvailable mother liquors from the production of ϊ, β-dinitrosopentamethylenetetramine by nitrosation cleavage of hexamethylenetetramine (in the form of a concentrated reaction mixture after aqueous formaldehyde ammoniacalization) using nitric acid and technical nitrite of sodium mixture with 20% sodium hydroxide. 1000 ml of these liquors contained
2,10 g hydroxidu sodného 13,85 g dusitanu sodného 13,30 g formaldehydu2.10 g sodium hydroxide 13.85 g sodium nitrite 13.30 g formaldehyde
3,16 g hexametyléntetramínu 148,41 g pevných podielov (to je solnosť)3.16 g hexamethylenetetramine 148.41 g solids (this is salinity)
Chemická spotřeba kyslíka bola 27 648 mg na 1000 ml. Hustota lúhov pri 20 °C bola 1,097 g.cm'3.The chemical oxygen demand was 27,648 mg per 1000 ml. The density of the liquids at 20 ° C was 1.097 g.cm < 3 >.
Po okyselení 54,15-nou kyselinou dusičnou na pH 2 až 1 boli matečné luhy 40 minut vyhrievané na 95 až 98 °C, Po ochladení na teplotu 62 až 58 °C bolo pH reakčnej zmesi plynným amoniakom upravené na hodnotu 8 až 8,5, Zahuštěním na 41,0 % povodněj (východzej) hmotnosti matečných lúhov bol získaný destilát s obsahom 2,5 g amoniaku na 1000 g destilátu. Destilačný zbytok žltohnedej farby^obsahoval 2,48 % hmotnostných hexametyléntetramínu,1,36 % hmotnostných dusičnanu amonného a 33,80 % hmotnostných dusičnanu sodného. Hustota tohoto roztoku pri 20 °C bola 1,275 g.cm 3.After acidification with 54.15 nitric acid to pH 2 to 1, the mother liquors were heated to 95 to 98 ° C for 40 minutes. After cooling to 62 to 58 ° C, the pH of the reaction mixture was adjusted to 8 to 8.5 with ammonia gas. By concentrating to 41.0% flood (starting) weight of the mother liquors, a distillate containing 2.5 g of ammonia per 1000 g of distillate was obtained. The yellow-brown distillation residue contained 2.48% hexamethylenetetramine, 1.36% ammonium nitrate, and 33.80% sodium nitrate. The density of this solution at 20 ° C was 1.275 g.cm 3 .
Přiklad 2Example 2
Matečné luhy z výroby ako v přiklade 1, ktoré v 1000 ml obsahovali 1,2 g hydroxidu sodnéhoThe mother liquors from the production as in Example 1, which contained 1.2 g of sodium hydroxide in 1000 ml
15,1 g dusitanu sodného 15,5 g formaldehydu15.1 g sodium nitrite 15.5 g formaldehyde
4,1 g hexametylentetramínu4.1 g of hexamethylenetetramine
168,1 g pevných podielov (to je solnosť)168.1 g solids (that is salinity)
Chemická spotřeba kyslíka bola 32 864 mg na 1000 ml. Hustota pri 20 °C bola 1,101 -3The chemical oxygen demand was 32,864 mg per 1000 ml. The density at 20 ° C was 1.101 -3
g.cm .g.cm.
Tieto matečné luhy po okyselení 20,65)-nou kyselinou dusičnou na pH 1 až 0 boli 10 minut zohrievané na teplotu 92 až 96 °C. Po ochladení na teplotu 75 až 72 °C bolo pH reakčnej zmesi čpavkovou vodou 23,6%-nou (připravenou z destilátu v přiklade 1 jeho sýtením plynným amoniakom) upravené, na hosnotu 8,5 až 9. Po zahuštění na 68,4 % povodnej hmotnosti obsahoval destilát 3,9 g amoniaku v 1000 g destilátu. Slabo nažltlý destilačný zbytok obsahoval 1,76 % hmotnostných hexametyléntetramínu 2,0 % hmotnostných dusičnanu amonného a 21,36 % hmotnostných dusičnanu sodného.These mother liquors were heated to 92-96 ° C for 10 minutes after acidification with 20.65N nitric acid to pH 1 to 0. After cooling to 75-72 ° C, the reaction mixture was adjusted to pH 8.5-9 with ammonia water at 23.6% (prepared from the distillate in Example 1 by saturating it with ammonia gas). Concentration to 68.4% of an initial weight, the distillate contained 3.9 g of ammonia in 1000 g of distillate. The slightly yellow distillation residue contained 1.76% by weight hexamethylenetetramine 2.0% by weight ammonium nitrate and 21.36% by weight sodium nitrate.
Přiklad 3Example 3
Z upravených a zahuštěných matečných lúhov přikladu 1 a močoviny bol pri 104 až 107 °C připravený 75%-ný roztok močoviny. Tento roztok o teplote 105 °C bol zmiešaný s 80 °C teplým 75í'^-ným roztokom dusičnanu amonného v hmotnostnom pomere 1:1. Bolo získané kvapalné hnojivo s obsahom 15,29 % dusíka amoniunitraťového a 17,67 % dusíka organického, teda s obsahom 32,96 % dusíka celkového. Teplota vysoToVania bola -19 °C.From the treated and concentrated mother liquors of Example 1 and urea, a 75% urea solution was prepared at 104-107 ° C. This 105 ° C solution was mixed with a 80 ° C warm 1: 1 75% ammonium nitrate solution. A liquid fertilizer was obtained containing 15.29% ammonium nitrate nitrogen and 17.67% organic nitrogen, i.e. 32.96% total nitrogen. The boiling point was -19 ° C.
Přiklad 4Example 4
Z upravených a zahuštěných matečných lúhov podl’a přikladu 1 a močoviny hol pri teplote 80 až 84 °C připravený 75%-ný roztok močoviny, ktorý bol zmiešaný s 80%-nýn roztokom dusičnanu amonného o teplote 115 °C v hmotnostnom pomere 1:1. Bolo tak získané kvapalné hnoj Ivo o obsahu 16,28 % dusíka amoniumnitrátového a 17,32 i? dusíka organického, teda s obsahom 3.3,60 % dusíka celkového. Teplota vyaolovania bola -80 °C.A 75% urea solution was prepared from the treated and concentrated mother liquors of Example 1 and urea at 80-84 ° C and mixed with 80% ammonium nitrate solution at 115 ° C in a 1: 1 weight ratio: first Thus was obtained liquid manure Ivo containing 16.28% of ammonium nitrate nitrogen and 17.32 i? of organic nitrogen, ie containing 3,3,60% of total nitrogen. The rolling temperature was -80 ° C.
Přiklad 5Example 5
Z upravených a zahuštěných matečných lúhov podlá přikladu 1 a močoviny bol pri teplote 70 až 76 °C připravený 70%-ný roztok močoviny, ktorý bol zmiešaný so 75?-—ným roztokom dusičnanu amonného 115 °0 teplým v hmotnostnom pomere 1:1. Bolo tak získané kvapalné hnojivo o obsahu 15,2? % dusíka amoniumnitrátového a 16,72 y dusíka organického, teda o obsahu 31,94 V dusíka celkového. Teplota vyaolovania bola -21 °0 ,A 70% urea solution was prepared from the treated and concentrated mother liquors of Example 1 and urea at 70-76 ° C, and mixed with a 75% ammonium nitrate solution of 115 ° C in a 1: 1 weight ratio. Was a liquid fertilizer of 15.2? % of ammonium nitrate nitrogen and 16.72 y of organic nitrogen, i.e. of 31.94 V total nitrogen. The shaving temperature was -21 ° 0,
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS432678A CS208818B1 (en) | 1978-06-30 | 1978-06-30 | Manufactiring process of liquid fertilizers based on urea and ammonium nitrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS432678A CS208818B1 (en) | 1978-06-30 | 1978-06-30 | Manufactiring process of liquid fertilizers based on urea and ammonium nitrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS208818B1 true CS208818B1 (en) | 1981-10-30 |
Family
ID=5385744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS432678A CS208818B1 (en) | 1978-06-30 | 1978-06-30 | Manufactiring process of liquid fertilizers based on urea and ammonium nitrate |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS208818B1 (en) |
-
1978
- 1978-06-30 CS CS432678A patent/CS208818B1/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR920000372B1 (en) | Process for the production of dinitrotoluene | |
| US3746528A (en) | Utilization of urea production effluents | |
| NO341907B1 (en) | Process for the preparation of guanylureadinitramide | |
| CS208818B1 (en) | Manufactiring process of liquid fertilizers based on urea and ammonium nitrate | |
| CN104557721A (en) | Method for producing 5,5-dimethylhydantoin | |
| US4230479A (en) | Process for improving the quality of urea-ammonium nitrate solution | |
| US4155989A (en) | Removal of nitric acid from nitric acid-sulfuric acid mixtures | |
| US2916516A (en) | Evaporation of aqueous urea solutions | |
| US3404947A (en) | Process for waste disposal | |
| CS200037B1 (en) | Method of producing liquid fertilisers based on urea and ammonium nitrate | |
| US3404949A (en) | Process for the production of ammonium sulfamate | |
| GB1376404A (en) | Process for working up the wash solution obtained in the washing of so2-containing off-gas using aqueous ammonia | |
| US3560147A (en) | Method for the production of concentrated nitrogen oxide | |
| CN113603557B (en) | Process for co-production of dicyandiamide and ammonium nitrate nitrogen fertilizer | |
| Thompson et al. | PILOT PLANTS. Diammonium Phosphate | |
| CN115304203B (en) | Method for recycling nitroguanidine acidic wastewater | |
| SU191498A1 (en) | METHOD OF INHIBITING THE THERMAL DECOMPOSITION OF AMMONIUM SILITRA | |
| GB807107A (en) | Fertilizers | |
| SU947046A1 (en) | Process for producing ammonium nitrate under pressure | |
| US3124578A (en) | Methob of producing cyclotri- | |
| CS199088B1 (en) | Process for preparing liquid fertilizers | |
| SU600127A1 (en) | Method of obtaining incompressible fertilizers | |
| SU906978A1 (en) | Process for producing nitrogen fertilizer based on molybdenum-containing wastes | |
| SU1310376A1 (en) | Method for producing liquid nitrogen-phosphorus fertilizers | |
| GB1244786A (en) | Improvements in or relating to the treatment of waste water streams |