WO2011082460A1 - Processo de purificação de glicerina oriunda da produção de biodiesel, através da sua reação com cetonas em meio ácido e posterior purificação - Google Patents
Processo de purificação de glicerina oriunda da produção de biodiesel, através da sua reação com cetonas em meio ácido e posterior purificação Download PDFInfo
- Publication number
- WO2011082460A1 WO2011082460A1 PCT/BR2010/000044 BR2010000044W WO2011082460A1 WO 2011082460 A1 WO2011082460 A1 WO 2011082460A1 BR 2010000044 W BR2010000044 W BR 2010000044W WO 2011082460 A1 WO2011082460 A1 WO 2011082460A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fact
- evaporation
- reaction
- treatment
- glycerin
- Prior art date
Links
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 title claims abstract description 160
- 239000003225 biodiesel Substances 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 title claims description 22
- 238000000746 purification Methods 0.000 title claims description 14
- 239000002253 acid Substances 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title abstract description 16
- 150000002576 ketones Chemical class 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 64
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000126 substance Substances 0.000 claims abstract description 16
- 235000011187 glycerol Nutrition 0.000 claims description 71
- 230000008569 process Effects 0.000 claims description 58
- 238000001704 evaporation Methods 0.000 claims description 28
- 230000008020 evaporation Effects 0.000 claims description 27
- 238000001179 sorption measurement Methods 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 230000007062 hydrolysis Effects 0.000 claims description 13
- 238000006460 hydrolysis reaction Methods 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 13
- 238000005907 ketalization reaction Methods 0.000 claims description 10
- 238000002203 pretreatment Methods 0.000 claims description 10
- 239000003456 ion exchange resin Substances 0.000 claims description 9
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 7
- 238000013019 agitation Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- YGSFNCRAZOCNDJ-UHFFFAOYSA-N propan-2-one Chemical compound CC(C)=O.CC(C)=O YGSFNCRAZOCNDJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000005809 transesterification reaction Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 150000007522 mineralic acids Chemical class 0.000 claims description 4
- 150000007524 organic acids Chemical class 0.000 claims description 4
- 238000010977 unit operation Methods 0.000 claims description 4
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000000825 pharmaceutical preparation Substances 0.000 claims description 3
- 229940127557 pharmaceutical product Drugs 0.000 claims description 3
- 239000011541 reaction mixture Substances 0.000 claims description 3
- JSVWUUWRVHNXHE-UHFFFAOYSA-N (2,2-dimethyl-1,3-dioxolan-4-yl)methanol;1,3-dioxolane Chemical compound C1COCO1.CC1(C)OCC(CO)O1 JSVWUUWRVHNXHE-UHFFFAOYSA-N 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 239000003463 adsorbent Substances 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 238000005119 centrifugation Methods 0.000 claims 1
- 238000010908 decantation Methods 0.000 claims 1
- -1 dioxolane (2,2-dimethyl-([1,3]-dioxolan-4-yl)-methanol) glycerol Chemical compound 0.000 claims 1
- 230000020477 pH reduction Effects 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 26
- 239000007791 liquid phase Substances 0.000 abstract description 5
- 125000000623 heterocyclic group Chemical group 0.000 abstract description 2
- 239000013067 intermediate product Substances 0.000 abstract description 2
- 239000007858 starting material Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 150000001241 acetals Chemical class 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000002803 fossil fuel Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000008158 vegetable oil Substances 0.000 description 3
- 230000035899 viability Effects 0.000 description 3
- 235000019737 Animal fat Nutrition 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000002551 biofuel Substances 0.000 description 2
- 239000003054 catalyst Chemical group 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RNVYQYLELCKWAN-UHFFFAOYSA-N solketal Chemical compound CC1(C)OCC(CO)O1 RNVYQYLELCKWAN-UHFFFAOYSA-N 0.000 description 2
- 235000015112 vegetable and seed oil Nutrition 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- CHRJZRDFSQHIFI-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;styrene Chemical compound C=CC1=CC=CC=C1.C=CC1=CC=CC=C1C=C CHRJZRDFSQHIFI-UHFFFAOYSA-N 0.000 description 1
- 0 CC(OCC(COC(N)=O)OC(*)=O)=O Chemical compound CC(OCC(COC(N)=O)OC(*)=O)=O 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000012264 purified product Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/14—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/18—Radicals substituted by singly bound oxygen or sulfur atoms
- C07D317/20—Free hydroxyl or mercaptan
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/88—Separation; Purification; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification of at least one compound
Definitions
- the present invention relates to a process for the purification of blond glycerin from the production of biodiesel.
- the most relevant operations of this purification process occur in two steps.
- the first is precipitation of the organic and inorganic salts, usually difficult to remove by the methods described in the literature. This said step occurs at ambient temperature, at atmospheric pressure and under vigorous stirring, where a ketalization reaction occurs between glycerol and acetone with the formation of a liquid phase containing the respective heterocyclic intermediate, classified as ketal.
- the second step comprises two unit operations integrated in a single equipment: hydrolysis of the intermediate product present in the liquid phase, followed by evaporation of the acetone. Thereby the starting material is recovered in quantitative chemical yield and high purity.
- biofuels are characterized by low emission of pollutants - compared to fossil fuels - and are produced from renewable sources.
- These new fuels comprise a series of products, in particular, the fuel alcohol whose sugar sucrose technology was developed in Brazil in the late 1970s. Ethanol production had its after a period of decline, resumed the rhythm of production to meet the demand for fossil fuel substitution.
- Another class of biofuels comprises biodiesel from the transesterification reaction of vegetable oils or animal fat catalyzed by an acid or a base.
- This reaction about 10% by weight of crude glycerin per weight of converted oil containing high salt contents and other by-products of difficult removal are generated.
- the crude glycerin consists, therefore, of a solution containing glycerol, water, organic salts, inorganic salts, catalyst residue, etc., obtained after the recovery of the biodiesel from the reaction mixture.
- Another type of unpurified glycerin that is offered by the biodiesel industry is blond glycerin. Blonde glycerin is obtained
- WO 2009/14702 A1 describes a method of crude glycerin purification where ketals and acetals are formed and then distillation processes are used, which are distinguished by high temperatures at high energy costs. Another point that should be evaluated is the lability of the ketals and acetals, and the solubility in water, since the process makes use of an alkaline solution to neutralize the intermediate to be distilled in the next step. This neutralization results in an additional formation of salt, which is one of the contaminants of glycerin.
- the principle of the process is based on the reaction of 1,2,3-propanediol (glycerol) with propanone (acetone) in acidic medium at room temperature under vigorous stirring to form an intermediate, 2,2-dimethyl- ([1,3] dioxolan-4-yl) -methanol (ketal) from the improvement of the disclosure in patent application 0902550.
- Figure 1 shows a process flow diagram object of the invention.
- the process of purifying the blond glycerin resulting from the biodiesel production process of the present invention consists in the use of unitary operations known in the art in a specific sequence and under mild conditions where the separation of the main impurities occurs at atmospheric pressure and temperature environment with consequently low energy consumption, including the reaction between glycerol and acetone.
- Said process more broadly, comprises:
- step (2) stage of hydrolysis of the dioxolane in the mixing reactor by reversing the reaction of step (2), by evaporating the acetone from the reaction vessel with addition of water and / or using reduced pressure if necessary, obtaining a glycerol with purity above 99.5%;
- the pretreatment step () comprises a sequence of operations aimed at clarifying and standardizing the solution of blond glycerin resulting from the biodiesel production process from the different renewable sources.
- This step comprises a filtration operation for the removal of large sludge particles followed by an activated carbon adsorption operation for color and odor removal and evaporation for removal of excess water and volatiles as alcohols and esters of small chains.
- This step may include, if necessary, prior pH adjustment for a range of 4 to 6 with addition of organic or inorganic acid.
- the pre-treatment operations are conducted at atmospheric pressure, if necessary, a reduced pressure of at least 100 mmHg abs in the evaporation operation and at temperatures ranging from 50 to 100 ° C using mechanical agitation if necessary .
- the water concentration in the obtained clarified glycerin is less than 5% w / w, preferably 0.5 to 2% w / w.
- pretreatment of the blond glycerin from the biodiesel production process is carried out in a stirred vessel containing activated carbon in the range of 0.05 to 1% w / w in temperatures ranging from 50 to 90 ° C for a period of from 1 to 4 hours.
- the solution is filtered to remove the activated carbon.
- the solution is then subjected to the evaporation operation at a temperature of 50 to 100 ⁇ C, stirring and applying reduced pressure of at least 100 mmHg abs.
- a solution of clarified glycerin with a moisture content of less than 5% w / w is obtained with absence of suspended particles.
- the ketalization step (2) is the reaction of 1,2,3-propanediol (glycerol) with propanone (acetone) in acidic medium, adjusted by means of organic or inorganic acids, at atmospheric pressure and at room temperature, to form the intermediate 2,2-dimethyl - ([1,3] dioxolan-4-yl) -methanol (dioxolane).
- the mass ratio of added acetone in the clarified glycerin is from 1 to 5, preferably from 2 to 3.
- the reaction is conducted in a mixing reactor with stirring between 200 to 1800 rpm, preferably between 800 and 1200 rpm at a temperature in the range of 5 ° C to 50 ° C, more preferably at a temperature in the range of 15 ° C to 40 ° C, and at a pH less than 3, preferably 0.5 to 1.5.
- the reaction time is from 30 to 120 minutes, preferably from 45 to 75 minutes.
- the reaction yield is 85-98%.
- Step (3) comprises a solid-liquid separation step for removal of the precipitated salts, followed by an adsorption operation on ion exchange resins.
- dioxolane / acetone is more than 80% of the liquid phase and has a low viscosity, there is a great advantage of processing when compared to the viscosity of the glycerin.
- the lower viscosity reduces pumping costs and improves the efficiency of solid-liquid separation and adsorption operations, making it possible to remove impurities.
- Step (4) comprises two operations integrated in a single vessel: dioxolane hydrolysis and evaporation of the acetone generated by this reaction with or without recycle of the solution contained in the vessel.
- This integrated operation is of fundamental importance for the economic viability of the process since it is possible to remove the residual acetone to be recycled in the process.
- the hydrolysis / evaporation step is conducted at a temperature of 30 to 100 ° C, preferably 50 to 100 ° C, under stirring.
- the pH value of the blend should be below 3, preferably 0.5 to 1.5, and the adjustment is done with addition of organic or inorganic acid. This operation lasts from 1 to 5 hours.
- reduced pressure can be used in the vessel, at a minimum value of 100 mmHg abs, for extraction of the last traces of acetone.
- conversion of dioxolane to glycerin is obtained from 99.5% to 100% and purity greater than 99.5%.
- Step (5) consists of post-treatment of glycerin to guarantee final specification, eliminating traces of salts, water, acetone, color and odor, which allows its use in pharmaceutical products according to USP regulations (United States Pharmacopeia).
- This step may comprise adsorption operation with the use of activated carbon for color and odor removal, adsorption operation with ion exchange resins to remove residual salts and evaporation to remove residual water and acetone.
- the evaporation operation is conducted under reduced pressure in the vessel to a minimum of 100 mmHg abs and at temperatures ranging from 20 to 100 ° C using mechanical agitation if necessary.
- ion exchange resins in the described process is restricted to an intermediate stage, whose advantages relative to the reduction of operating costs was emphasized previously; and to a final post-treatment step for specification adjustment, if necessary. Therefore, the use of ion exchange resins in the process of the present invention serves only for the removal of residual traces of salts and is not a key operation in the removal of almost all of the contaminant salts of glycerine from biodiesel as they are in other processes described in the literature and cited hereinbefore.
- steps (2) which occur at ambient temperature and atmospheric pressure and (4).
- steps (2) which occur at ambient temperature and atmospheric pressure and (4).
- the exact sequence of operations involving the ketalization followed by solid-liquid separation, adsorption on ion exchange resins and hydrolysis with concomitant evaporation of acetone ensure the technical-economic viability of the process differently from that described in the document PI 0902550.
- the pretreated glycerin was transferred to a blending reactor and then 14.3 kg of acetone was added. With the system under agitation of 800 rpm, the pH of the mixture was adjusted to 2.8 with the addition of p-toluenesulfonic acid. The mixture was maintained at 31 ⁇ ° C for 45 minutes. After this time, the solution was filtered to remove the crystallized salt during the reaction.
- the ketal containing mixture was passed through an ion exchange resin system (15 wet and A-21) and transferred to a jacketed reactor. Under stirring, the pH of the mixture was adjusted to 2.9 using p-toluenesulfonic acid, then the mixture was heated to 60 ° C. Under these conditions, the evaporation of acetone was promoted at atmospheric pressure, which is condensed in one vessel to be reused in another cycle. After 3.2 hours, a conversion of 100% ketal into glycerin was obtained.
- the glycerine solution obtained after this step was percolated by an activated charcoal column and then by a column system with ion exchange resins (15 wet and A-21). Finally, the glycerin underwent a final evaporation step at 89 ° C under pressure 400 m mHg abs for removal of residual water to give a final glycerin of 99.7% purity.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112012016832A BR112012016832A2 (pt) | 2010-01-11 | 2010-02-11 | processo de purificação de glicerina |
PCT/BR2010/000044 WO2011082460A1 (pt) | 2010-01-11 | 2010-02-11 | Processo de purificação de glicerina oriunda da produção de biodiesel, através da sua reação com cetonas em meio ácido e posterior purificação |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR011100000018 | 2010-01-11 | ||
PCT/BR2010/000044 WO2011082460A1 (pt) | 2010-01-11 | 2010-02-11 | Processo de purificação de glicerina oriunda da produção de biodiesel, através da sua reação com cetonas em meio ácido e posterior purificação |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011082460A1 true WO2011082460A1 (pt) | 2011-07-14 |
Family
ID=44713074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2010/000044 WO2011082460A1 (pt) | 2010-01-11 | 2010-02-11 | Processo de purificação de glicerina oriunda da produção de biodiesel, através da sua reação com cetonas em meio ácido e posterior purificação |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2011082460A1 (pt) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111848343A (zh) * | 2020-08-11 | 2020-10-30 | 深圳飞扬兴业科技有限公司 | 一种甘油精制的工艺及装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB802022A (en) * | 1955-12-19 | 1958-09-24 | Peter Spence & Sons Ltd | Dioxolanes |
GB946853A (en) * | 1961-03-24 | 1964-01-15 | Electro Chimie Metal | Process for purification of glycerin |
EP0071019A1 (en) * | 1981-07-20 | 1983-02-09 | Kao Soap Company, Ltd. | 2,3-Dialkoxypropyl glyceryl ether and its preparation process as well as cosmetic composition containing same |
US5917059A (en) * | 1996-11-15 | 1999-06-29 | Basf Aktiengesellschaft | Preparation of cyclic acetals or ketals |
JP2006273750A (ja) * | 2005-03-29 | 2006-10-12 | Nof Corp | 1,3−ジオキソラン化合物の製造方法 |
-
2010
- 2010-02-11 WO PCT/BR2010/000044 patent/WO2011082460A1/pt active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB802022A (en) * | 1955-12-19 | 1958-09-24 | Peter Spence & Sons Ltd | Dioxolanes |
GB946853A (en) * | 1961-03-24 | 1964-01-15 | Electro Chimie Metal | Process for purification of glycerin |
EP0071019A1 (en) * | 1981-07-20 | 1983-02-09 | Kao Soap Company, Ltd. | 2,3-Dialkoxypropyl glyceryl ether and its preparation process as well as cosmetic composition containing same |
US5917059A (en) * | 1996-11-15 | 1999-06-29 | Basf Aktiengesellschaft | Preparation of cyclic acetals or ketals |
JP2006273750A (ja) * | 2005-03-29 | 2006-10-12 | Nof Corp | 1,3−ジオキソラン化合物の製造方法 |
Non-Patent Citations (2)
Title |
---|
E. GARCA ET AL.: "New Class of Acetal Derived from Glycerin as a Biodiesel Fuel Component.", ENERGY & FUELS, vol. 22, no. 6, 2008, pages 4274 - 4280, XP055054852, DOI: doi:10.1021/ef800477m * |
R. C. RODRIGUES ET AL.: "Processo de purificação transformação de-glicerina loura em produtos de maior valor agregado.", PRÊMIO ABIQUIM DE TECNOLOGIA 2009, November 2009 (2009-11-01) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111848343A (zh) * | 2020-08-11 | 2020-10-30 | 深圳飞扬兴业科技有限公司 | 一种甘油精制的工艺及装置 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2008224486B2 (en) | A process for the recovery of HCl from a dilute solution thereof | |
WO2016034727A1 (en) | Selective extraction and conversion of a cellulosic feedstock to ethylene glycol | |
CN101284850B (zh) | 三氯蔗糖的纯化和结晶方法 | |
Wolfaardt et al. | Recovery approaches for sulfuric acid from the concentrated acid hydrolysis of lignocellulosic feedstocks: A mini-review | |
CN109721471B (zh) | 一种从生产生物柴油的副产物中提纯甘油的方法 | |
KR20100100916A (ko) | 발효 브로쓰로부터 알콜을 정제하는 방법 | |
US20170267785A1 (en) | Process for the conversion of cellulose | |
JP5317058B2 (ja) | 有機アミン−乳酸錯体の調製方法 | |
CA2883330A1 (en) | Processes and apparatus for producing fermentable sugars, cellulose solids, and lignin from lignocellulosic biomass | |
WO2011082460A1 (pt) | Processo de purificação de glicerina oriunda da produção de biodiesel, através da sua reação com cetonas em meio ácido e posterior purificação | |
JP2010184902A (ja) | イオン液体の精製方法および回収方法 | |
US20150354017A1 (en) | Methods for removing residual solids from enzymatic hydrolysate to make purified fermentable sugar syrup | |
Muniru et al. | Review of different purification techniques for crude glycerol from biodiesel production | |
JP2009195189A (ja) | 多糖類からの単糖またはオリゴ糖の製造方法 | |
BR102019004855A2 (pt) | Processo de purificação da glicerina bruta residual da síntese do biodiesel | |
BRPI1001444A2 (pt) | Processo de obtenção de glicerina purificada | |
WO2008002776A1 (en) | Separating saturated and unsaturated fatty acids for producing cold-tolorant biodiesel fuel | |
EP2924003B1 (en) | Method for purifying phosphoric acid | |
JP4914113B2 (ja) | ステロール類の製造方法 | |
JP6450503B1 (ja) | タール酸の製造方法 | |
BRPI0901399A2 (pt) | processo para obtenção de dicloropropanóis | |
WO2015185712A1 (en) | Glycerol-based fermentation process | |
BR112015021763B1 (pt) | método de purificação de um álcool graxo (falc) | |
CN218740262U (zh) | 一种磷酸盐提纯系统 | |
BR112016030834B1 (pt) | Processo para a fabricação de glicerol purificado |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10841833 Country of ref document: EP Kind code of ref document: A1 |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112012016832 Country of ref document: BR |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 10841833 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 112012016832 Country of ref document: BR Kind code of ref document: A2 Effective date: 20120709 |