NL2030753B1 - Method for preparing asphalt regenerant for vegetable oil residues - Google Patents

Method for preparing asphalt regenerant for vegetable oil residues Download PDF

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Publication number
NL2030753B1
NL2030753B1 NL2030753A NL2030753A NL2030753B1 NL 2030753 B1 NL2030753 B1 NL 2030753B1 NL 2030753 A NL2030753 A NL 2030753A NL 2030753 A NL2030753 A NL 2030753A NL 2030753 B1 NL2030753 B1 NL 2030753B1
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regenerant
vegetable oil
oil residues
asphalt
preparing
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NL2030753A
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Dutch (nl)
Inventor
Feng Decheng
Zhou Wenyi
Yi Junyan
Pei Zhongshi
Xu Meng
Wang Dongsheng
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Harbin Inst Technology
Harbin Quan Transp Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/10—Esters; Ether-esters
    • C08K5/101—Esters; Ether-esters of monocarboxylic acids

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Working-Up Tar And Pitch (AREA)

Abstract

The present disclosure relates to a method for preparing an asphalt regenerant for vegetable oil residues, and aims to solve the problems of difficulty in treatment and low utilization rate of vegetable oil residues. The method for preparing the asphalt 5 regenerant for vegetable oil residues comprises the following steps: 1, distilling and dehydrating the vegetable oil residues; 2, adding acetone into the dehydrated oil residues, performing solid—liquid separation, and collecting a solid—phase substance which is a phospholipid material in the oil residues; 3, 10 distilling a liquid—phase mixture in a distillation device; 4, adding methanol into the mixed liguid, adding solid sodium hydroxide as a catalyst, and reacting at the temperature of 60— 65°C; 5, distilling a reaction solution at the temperature of 90— 95°C to obtain an effective component of the regenerant; 6, fusing 15 and stirring matrix asphalt and the effective component of the regenerant at the temperature of lOO—lZO°C.

Description

P1045 /NLpd
METHOD FOR PREPARING ASPHALT REGENERANT FOR VEGETABLE OIL RESIDUES
TECHNICAL FIELD
The present disclosure belongs to the field of road engineer- ing, and particularly relates to a method for preparing an asphalt regenerant for vegetable oil residues.
BACKGROUND ART
Vegetable oil residues are by-products of vegetable oil re- fining and processing. Its main components are water, phospholip- ids, unseparated oils and fats, fatty acids, hydrocarbons and res- ins, etc., generally accounting for 5% to 10% of the total mass of vegetable oil. In traditional processes, the phospholipids and other components in the oil residues are generally used to produce raw materials for other products after separation and purifica- tion. The remaining substances are often difficult to use due to complex components and difficult purification, so most of them are discarded. In the process of discarding, stacking, and transporta- tion, it not only consumes a lot of money, but also causes great pollution to the environment. Especially after the oil residues are decayed in the stacking pool, the smell is very heavy, which will not only cause adverse effects on the lives of peoples living around, but also will cause a lot of contamination to the environ- ment, lead to a waste of resources and contamination of the eco- logical environment. The disposal of oil residues has become an important issue that needs to be solved urgently.
Vegetable oil has the effect of softening aging asphalt and restoring asphalt performance, and is one of the raw materials in the preparation of some asphalt regenerant products. In addition, studies have shown that fatty acids can exert similar functions.
Considering that except for water and phospholipids in the compo- sition of vegetable oil residues, the main components such as oils and fats, fatty acids, and hydrocarbons can effectively restore the performance of aged asphalt. Therefore, it is feasible to use vegetable oil residues to prepare an asphalt regenerant. The ap-
plication of vegetable oil residues in the field of asphalt regen- eration can effectively solve the problem of disposal of vegetable oil residues, and can play a role in turning wastes into another key material for sustainable technology, which has major environ- mental benefits and economics benefits.
SUMMARY
The present disclosure aims to solve the problems of diffi- culty in treatment and low utilization ratio of vegetable oil res- idues, thereby providing a method for preparing an asphalt regen- erant for vegetable oil residues to implement cyclic reutilization of solid waste resources.
A method for preparing an asphalt regenerant for vegetable oil residues comprises the following steps: 1, distilling and dehydrating vegetable oil residues to re- move water in the vegetable oil residues so as to obtain dehydrat- ed oil residues; 2, adding acetone into the dehydrated oil residues, uniformly stirring, filtering, performing solid-liquid separation to obtain a solid-phase substance and a liquid-phase mixture, and collecting the solid-phase substance which is the phospholipid material in the oil residues; 3, distilling the liquid-phase mixture obtained in the step 2 in a distillation device, controlling the distillation temperature to be 55-60°C, collecting the acetone volatilized in the distilla- tion, and retain the remaining mixed solution after distillation; 4, adding methanol into the mixed solution obtained in the step 3, adding solid sodium hydroxide as a catalyst, and reacting at the temperature of 60-65°C for 60-90 min to obtain a reaction solution; 5, distilling the reaction solution at the temperature of 90- 95°C, collecting distilled methanol, and filtering distillation residues to obtain an effective component of the regenerant; 6, fusing and stirring matrix asphalt and the effective com- ponent of the regenerant at the temperature of 100-120°C to finish preparation of the asphalt regenerant for vegetable oil residues.
The theoretical simulation and experimental analysis indicate that the phospholipid in the vegetable oil residues has small ac- tions on recovering the properties of aged asphalt, and the phos- pholipid can be used as a raw material for many industrial prod- ucts, so the phospholipid is firstly extracted from the oil resi- dues in the present disclosure, and it can be used as raw material for producing fertilizers, washing powder and other industrial products. The diffusion rate of fatty acid substances in the as- phalt is much lower than the diffusion rate of fatty acid esters, and the diffusion rate of the fatty acid esters is higher than the diffusion rate of fatty acids in the asphalt by more than 2 times.
Therefore, in order to enhance the diffusion properties of the vegetable oil residues regenerant, the fatty acid substances in the oil residues are converted into fatty acid esters, thereby re- moving the molecular polar groups and optimizing the diffusion characteristics. Other components in the oil residues have the promotion actions on recovering the properties of the aged as- phalt.
DETAILED DESCRIPTION OF THE EMBODIMENTS
Specific implementation mode I: A method for preparing an as- phalt regenerant for vegetable oil residues comprises the follow- ing steps: 1, distilling and dehydrating vegetable oil residues to re- move water in the vegetable oil residues so as to obtain dehydrat- ed oil residues; 2, adding acetone into the dehydrated oil residues, uniformly stirring, filtering, performing solid-liquid separation to obtain a solid-phase substance and a liquid-phase mixture, and collecting the solid-phase substance which is a phospholipid material in the oil residues; 3, distilling the liquid-phase mixture obtained in the step 2 in a distillation device, controlling the distillation temperature to be 55-60°C, collecting the acetone volatilized in the distilla- tion, and retain the remaining mixed solution after distillation; 4, adding methanol into the mixed solution obtained in the step 3, adding solid sodium hydroxide as a catalyst, and reacting at the temperature of 60-65°C for 60-90 min to obtain a reaction solution; 5, distilling the reaction solution at the temperature of 90- 95°C, collecting distilled methanol, and filtering distillation residues to obtain an effective component of the regenerant; 6, fusing and stirring matrix asphalt and the effective com- ponent of the regenerant at the temperature of 100-120°C to finish preparation of the asphalt regenerant for vegetable oil residues.
Specific implementation mode II: The difference between this implementation mode and the specific implementation mode I is that in step 2, gravity filtration is used for solid-liquid separation.
Specific implementation mode III: The difference between this implementation mode and the specific implementation mode I or II is that, acetone is added to the dehydrated oil residue and stirred at a speed of 300 r/min for 30-60 minutes.
Specific implementation mode IV: The difference between this implementation mode and one of the specific implementation mode I to IIT is that the mass ratio of the mixed solution to methanol in step 4 is (1:8) to (1:12).
Specific implementation mode V: The difference between this implementation mode and one of the specific implementation mode I to IV is that the mass ratio of the mixed solution to the solid sodium hydroxide in step 4 is (50:1) to (60:1).
Specific implementation mode VI: The difference between this implementation mode and one of specific implementation mode I to V is that the gravity filtration is used to distill the residues to obtain effective components of the regenerant in the step 5.
Specific implementation mode VII: The difference between this implementation mode and one of specific implementation mode I to
VI is that the base asphalt and the effective components of the regenerant are fused and stirred at 100°C in the step 6.
Specific implementation mode VIII: The difference between this implementation mode and one of Specific implementation modes
I to VII is that the mass ratio of the base asphalt to the effec- tive components of the regenerant in step 6 is 1:0.5 to 1:2.
Example 1: a method for preparing an asphalt regenerant for vegetable oil residues was implemented by the following steps: 1, weighing 100 parts (in parts by mass) of vegetable oil residues, putting the vegetable oil residues into a distillation container, distilling and dehydrating the vegetable oil residues 5 to remove water in the vegetable oil residues to obtain dehydrated oil residues; 2, adding 150 parts of acetone into the dehydrated oil resi- dues, stirring at a speed of 300 r/min at normal temperature for 60 minutes, filtering for solid-liquid separation to obtain a sol- id-phase substance and a liquid-phase mixture, and collecting the solid-phase substance which was a phospholipid material in the oil residues; 3, putting the liquid-phase mixture obtained in the step 2 into a distillation device for distilling, controlling the distil- lation temperature to be 60°C, collecting the acetone volatilized in the distillation, and retain the remaining mixed solution after distillation; 4, adding 550 parts of methanol into the mixed solution ob- tained in the step 3, adding 1 part of solid sodium hydroxide as a catalyst, and reacting at the temperature of 60°C for 75 min to obtain a reaction solution; 5, distilling the reaction solution at the temperature of 90°C, collecting distilled methanol, and filtering distillation residues to obtain an effective component of the regenerant; 6, fusing and stirring 20 parts of matrix asphalt and 40 parts of the effective component of the regenerant at the tempera- ture of 100°C to finish preparation of the asphalt regenerant for vegetable oil residues.
Example 2: a method for preparing an asphalt regenerant for vegetable oil residues was implemented by the following steps: 1, weighing 100 parts (in parts by mass) of vegetable oil residues, putting the vegetable oil residues into a distillation container, distilling and dehydrating the vegetable oil residues to remove water in the vegetable oil residues to obtain dehydrated oil residues; 2, adding 200 parts of acetone into the dehydrated oil resi-
dues, stirring at a speed of 300 r/min at normal temperature for 60 minutes, filtering for solid-liquid separation to obtain a sol- id-phase substance and a liguid-phase mixture, and collecting the solid-phase substance which was a phospholipid material in the oil residues; 3, putting the liguid-phase mixture obtained in the step 2 into a distillation device for distilling, controlling the distil- lation temperature to be 60°C, collecting the acetone volatilized in the distillation, and retain the remaining mixed solution after distillation; 4, adding 650 parts of methanol into the mixed solution ob- tained in the step 3, adding 1 part of solid sodium hydroxide as a catalyst, and reacting at the temperature of 60°C for 75 min to obtain a reaction solution; 5, distilling the reaction solution at the temperature of 90°C, collecting distilled methanol, and filtering distillation residues to obtain an effective component of the regenerant; 6, fusing and stirring 40 parts of matrix asphalt and 40 parts of the effective component of the regenerant at the tempera- ture of 100°C to finish preparation of the asphalt regenerant for vegetable oil residues.
Reference groups:
Two regenerant materials sold in the market were used as con- trol groups, regenerants prepared in Examples 1 and 2 and regen- erants in the control groups were subjected to performance test.
The test result was as follows.
Test method
The performance of the regenerant was evaluated by adopting a method in the patent titled Asphalt Regeneration Film Interface
Performance Evaluation Test Device with the publication number of
CN108645705, and the area enclosed by a force-displacement (F-L) curve obtained in test was treated as the Interface energy, which visually represented the performance of an asphalt fusion layer.
Compared with the performance test of a regenerated mixture, the method had the advantages that the interference of factors such as poor uniformity and inconsistent porosity of the mixture caused in the processes of mixing, separation, forming, etc. was well elimi- nated, and the influence of the regenerant on the interface of aged asphalt could be reflected. The aged asphalt was asphalt ob- tained in a highway reclaimed material which was used for more than 15 years. In the test process, the preloading force was 10 N, and the test stopping force was 30 N, thus invalid loading caused by virtual contact of a loading device in the initial stage and the end stage of the curve was eliminated, and the diffusion ener- gy index was used for representing the interface performance of diffusion fusion between the regenerant and the aged asphalt.
Table 1 Test result of interface performance of regenerant and aged asphalt. rcs Jorn mens [PT [Ft
Example 1 Example 2 generant group 1 group 2
EE
59.91 38.83 71.82 66.14 energy (md)
The regenerants in the Examples 1 and 2 had good diffusion fusion and adhesion effects with the aged asphalt, and the inter- face energy of the regenerants in the Examples 1 and 2 were re- spectively improved by 10% and 70% compared with those of the con- trol groups. The process for preparing the asphalt regenerant for vegetable oil residues material used an environment-friendly mate- rial, and the used organic solvents could be recycled, so the preparation method had good social and environmental benefits.

Claims (8)

CONCLUSIESCONCLUSIONS 1. Werkwijze voor het bereiden van een asfaltregeneratiemiddel voor plantaardige olieresten, omvattende de volgende stappen: 1, het distilleren en dehydrateren van plantaardige olieresiduen om water in de plantaardige olieresiduen te verwijderen om zo ge- dehydrateerde olieresiduen te verkrijgen; 2, het toevoegen van aceton aan de gedehydrateerde olieresiduen, het gelijkmatig roeren, filtreren, vast-vloeistofscheiding uitvoe- ren om een vaste-fasestof en een vloeistoffase-mengsel te verkrij- gen, en het verzamelen van de vaste-fasestof die een fosfolipide- materiaal is in de olieresten; 3, het destilleren van het in stap 2, verkregen vloeistoffasemeng- sel in een destillatie-inrichting, waarbij de destillatietempera- tuur wordt geregeld op 55 - 60 °C, het opvangen van de in de des- tillatie vervluchtigde aceton en het behoudende van de resterende gemengde oplossing na destillatie; 4, het toevoegen van methanol aan de in stap 3, verkregen gemengde oplossing, het toevoegen van vast natriumhydroxide als katalysator en het 60 - 90 min reageren bij een temperatuur van 60 - 65 °C om een reactieoplossing te verkrijgen; 5, het destilleren van de reactieoplossing bij een temperatuur van 90 - 95 °C, het verzamelen van gedestilleerde methanol en het fil- treren van destillatieresiduen om een effectieve component van het regeneratiemiddel te verkrijgen; 6, het smelten en roeren van de matrixasfalt en de effectieve com- ponent van het regeneratiemiddel bij een temperatuur van 100 - 120 °C om de bereiding van het asfaltregeneratiemiddel voor plantaar- dige olieresten te voltooien.A process for preparing an asphaltic regenerant for vegetable oil residues, comprising the steps of: 1, distilling and dehydrating vegetable oil residues to remove water in the vegetable oil residues to obtain dehydrated oil residues; 2, adding acetone to the dehydrated oil residues, stirring uniformly, filtering, performing solid-liquid separation to obtain a solid phase substance and a liquid phase mixture, and collecting the solid phase substance containing a phospholipid material is in the oil residue; 3, distilling the liquid phase mixture obtained in step 2 in a distillation apparatus, with the distillation temperature controlled at 55 - 60 °C, collecting the acetone volatilized in the distillation and retaining the residual mixed solution after distillation; 4, adding methanol to the mixed solution obtained in step 3, adding solid sodium hydroxide as a catalyst, and reacting at a temperature of 60-65°C for 60-90 minutes to obtain a reaction solution; 5, distilling the reaction solution at a temperature of 90 - 95°C, collecting distilled methanol and filtering the distillation residues to obtain an effective component of the regenerant; 6, melting and stirring the matrix asphalt and the effective component of the regenerant at a temperature of 100-120°C to complete the preparation of the vegetable oil residue asphalt regenerant. 2. Werkwijze voor het bereiden van het asfaltregeneratiemiddel voor plantaardige olieresten volgens conclusie 1, waarbij in stap 2, de vast-vloeistofscheiding wordt uitgevoerd door zwaartekracht- filtratie toe te passen.The method for preparing the vegetable oil residue asphalt regenerant according to claim 1, wherein in step 2, the solid-liquid separation is performed by applying gravity filtration. 3. Werkwijze voor het bereiden van het asfaltregeneratiemiddel voor plantaardige olieresten volgens conclusie 1, waarbij in stap 2, aceton wordt toegevoegd aan gedehydrateerde olieresten en 30 - 60 min wordt geroerd met een snelheid van 300 omw/min.The method for preparing the vegetable oil residue asphalt regenerant according to claim 1, wherein in step 2, acetone is added to dehydrated oil residue and stirred at a speed of 300 rpm for 30-60 minutes. 4. Werkwijze voor het bereiden van het asfaltregeneratiemiddel voor plantaardige olieresten volgens conclusie 1, waarbij in stap 4, de massaverhouding van de gemengde oplossing tot methanol (1:8) - (1:12) is.The process for preparing the vegetable oil residue asphalt regenerant according to claim 1, wherein in step 4, the mass ratio of the mixed solution to methanol is (1:8) - (1:12). 5. Werkwijze voor het bereiden van het asfaltregeneratiemiddel voor plantaardige olieresten volgens conclusie 1, waarbij in stap 4, de massaverhouding van de gemengde oplossing tot vast natrium- hydroxide (50:1) - (60:1) is.The process for preparing the vegetable oil residue asphalt regenerant according to claim 1, wherein in step 4, the mass ratio of the mixed solution to solid sodium hydroxide is (50:1) - (60:1). 6. Werkwijze voor het bereiden van het asfaltregeneratiemiddel voor plantaardige olieresiduen volgens conclusie 1, waarbij in stap 5, de destillatieresiduen worden onderworpen aan zwaarte- krachtfiltratie om de effectieve component van het regeneratiemid- del te verkrijgen.The process for preparing the asphaltic regenerant for vegetable oil residues according to claim 1, wherein in step 5, the distillation residues are subjected to gravity filtration to obtain the effective component of the regenerant. 7. Werkwijze voor het bereiden van het asfaltregeneratiemiddel voor plantaardige olieresten volgens conclusie 1, waarbij in stap 6, het matrixasfalt en de effectieve component van het regenera- tiemiddel worden samengesmolten en bij 100 °C worden geroerd.The method for preparing the vegetable oil residue asphalt regenerant according to claim 1, wherein in step 6, the matrix asphalt and the effective component of the regenerant are melted together and stirred at 100°C. 8. Werkwijze voor het bereiden van het asfaltregeneratiemiddel voor plantaardige olieresten volgens conclusie 1, waarbij in stap 6, de massaverhouding van het matrixasfalt tot de effectieve com- ponent van het regeneratiemiddel (1:0,5) - (1:2) is.The process for preparing the vegetable oil residue asphalt regenerant according to claim 1, wherein in step 6, the mass ratio of the matrix asphalt to the effective component of the regenerant is (1:0.5) - (1:2).
NL2030753A 2022-01-27 2022-01-27 Method for preparing asphalt regenerant for vegetable oil residues NL2030753B1 (en)

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