Preparation method and application of magnetic induction heating fuel oil purification adsorbent

Abstract

The invention relates to the field of purification of harmful substances in fuel oil, and particularly discloses a preparation method and application of a magnetic induction heating fuel oil purification adsorbent, and the method comprises the following steps: carrying out surface modification on metal / metal oxide nanoparticles; the modified metal / metal oxide nanoparticles, a polymer material and a binder are combined according to a certain mass ratio and stirred in water, and slurry of the magnetic induction heating fuel oil purification adsorbent is formed; and forming and roasting the slurry to prepare the granular magnetic induction heating fuel oil purification adsorbent. The prepared magnetic induction heating fuel oil purification adsorbent has the remarkable advantage of low energy consumption in the field of fuel oil purification, in-situ generation of heat is achieved through an alternating magnetic field, the heating speed is high, the heat transfer path is short, the energy utilization rate is high, and compared with a traditional high-temperature gas heating method, the energy consumption is reduced by 25% or above.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of harmful substance purification in fuel oil, in particular to a preparation method of a magnetic induction heating fuel oil purification adsorbent and application thereof. BACKGROUND

[0002] Fuel oil purification is the core technology to cope with global environmental regulations. It plays a key role in the process of refining process optimization, tail gas treatment and alternative fuels. Adsorption separation technology selectively captures harmful substances in fuel oil through porous materials, which is an important method to achieve fuel oil purification.

[0003] Traditional fuel oil purification adsorbents need to be regenerated by high-temperature desorption after saturation, which requires external heating of the entire adsorption bed. There are problems of low heat conduction efficiency and high consumption of heat energy, which limits industrial application. 2-5 Therefore, it is necessary to design a preparation method of a magnetic induction heating fuel oil purification adsorbent to solve the problems of high desorption energy consumption and low heat conduction efficiency of traditional existing adsorbents. SUMMARY

[0005] In view of this, the present application provides a preparation method of a magnetic induction heating fuel oil purification adsorbent to solve the problems of high desorption energy consumption and low heat conduction efficiency of traditional existing adsorbents.

[0006] On the one hand, the present application provides a preparation method of a magnetic induction heating fuel oil purification adsorbent, comprising the following preparation steps:

[0007] Mixing metal / metal oxide nanoparticles and sodium 4-styrene sulfonate in water, washing and drying after ultrasonic dispersion to obtain modified metal / metal oxide nanoparticles;

[0008] Placing the modified metal / metal oxide nanoparticles, polymer material and binder into water to stir to obtain slurry of the magnetic induction heating fuel oil purification adsorbent;

[0009] Molding and calcining the slurry to obtain the granular magnetic induction heating fuel oil purification adsorbent.

[0010] Further, the metal / metal oxide nanoparticles include: Fe3O4, γ-Fe2O3, CoFe2O4, Mn x Zn 1- x Fe2O4(0≤x≤1), Ni x Zn 1-x Fe2O4(0≤x≤1), Zn 1-x Mo x Fe2O4(0≤x≤1), Li 0-5 Fe2-5 O4, Mg 1- x Ni x Fe2O4(0≤x≤1), alloy powder, one or more of stainless steel.

[0011] Further, the mass ratio of the metal / metal oxide nanoparticles and sodium 4-styrene sulfonate is 1:(1-7).

[0012] Further, the polymer material is one or more of porous aromatic framework material, molecularly imprinted polymer, polymeric ionic liquid.

[0013] Further, the binder is one or more of bentonite, kaolin, attapulgite, clay mineral, silica sol, aluminum sol, aluminum dihydrogen phosphate, aluminate cement, water glass, phosphate cement.

[0014] Further, the mass ratio of the modified metal / metal oxide nanoparticles, polymer powder and binder is (1-3):(5-10):(2-4).

[0015] Further, the forming is extrusion forming or rolling ball forming.

[0016] In another aspect, the application also provides a magnetic induction heating fuel purification adsorbent, and the magnetic induction heating fuel purification adsorbent is loaded into an adsorption bed to adsorb harmful substances in fuel, and after the adsorption is completed, the adsorption bed is placed in an induction coil, and then power is supplied to generate an alternating magnetic field, and the metal / metal oxide nanoparticles are heated by magnetic induction to desorb the harmful substances in the fuel.

[0017] Further, the harmful substances include sulfides, nitrides and polycyclic aromatic hydrocarbons.

[0018] Further, the frequency of the alternating magnetic field is 50Hz-5MHz, the power is 100-5000W, and the regeneration temperature is 30-350℃.

[0019] Compared with the prior art, the application has the advantages that the magnetic induction heating fuel purification adsorbent prepared by the application has a significant low energy consumption advantage, heat is generated in situ by the alternating magnetic field, the heating rate is fast, the heat transfer path is short, and the energy utilization rate is high, and the energy consumption is reduced by more than 25% compared with the traditional high-temperature gas heating method. BRIEF DESCRIPTION OF DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0021] Figure 1 A flowchart illustrating the preparation method of the magnetic induction heating fuel purification adsorbent provided in this embodiment of the invention. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] On the one hand, such as Figure 1 As shown in some embodiments of this application, a method for preparing a magnetic induction heating fuel oil purification adsorbent includes the following preparation steps:

[0027] The metal / metal oxide nanoparticles and sodium 4-styrene sulfonate are mixed in water, ultrasonic dispersion, washing and drying to obtain modified metal / metal oxide nanoparticles;

[0028] The modified metal / metal oxide nanoparticles, polymer material and binder are put into water to stir to obtain a slurry of the granular magnetic induction heating fuel purification adsorbent;

[0029] The slurry is shaped and calcined to obtain the granular magnetic induction heating fuel purification adsorbent.

[0030] Specifically, the ultrasonic dispersion time is 30 minutes.

[0031] Specifically, when the metal / metal oxide nanoparticles and sodium 4-styrene sulfonate are mixed in water, the water is deionized water, and the volume of water is 100 ml.

[0032] Specifically, when the modified metal / metal oxide nanoparticles, polymer material and binder are put into water to stir, the water temperature is 25°C, and the stirring time is 1 hour.

[0033] It can be understood that the magnetic induction heating fuel purification adsorbent prepared by the present application has the advantage of significantly low energy consumption. The heat is generated in situ by the alternating magnetic field, the heating rate is fast, the heat transfer path is short, and the energy utilization rate is high. Compared with the traditional high-temperature gas heating method, the energy consumption is reduced by more than 25%.

[0034] In some embodiments of the present application, the metal / metal oxide nanoparticles include: Fe3O4, γ-Fe2O3, CoFe2O4, Mn x Zn 1-x Fe2O4(0≤x≤1), Ni x Zn 1-x Fe2O4(0≤x≤1), Zn 1-x Mo x Fe2O4(0≤x≤1), Li 0- 5Fe 2-5 O4, Mg 1-x Ni x Fe2O4(0≤x≤1), alloy powder, one or more of stainless steel, preferably γ-Fe2O3.

[0035] Specifically, the alloy powder is FeB 23 Co .05 , FeB 16 C 1.0 , FeCo 35 , FeCo 50 , Ni 70 Fe30 Fe 50 Fe 50 Fe 30 Fe 70 Fe 55 Fe 78 Fe 8.0 Fe 82 Fe 1.0 Fe 65 Fe

[0036] Specifically, the stainless steel is 316 stainless steel and 304 stainless steel.

[0037] Specifically, the metal / metal oxide nanoparticles have a spherical, cubic or shuttle shape, and a particle size of 3 nm-500 μm.

[0038] In some embodiments of the present application, the mass ratio of the metal / metal oxide nanoparticles to sodium 4-styrenesulfonate is 1:(1-7), preferably 1:5.

[0039] In some embodiments of the present application, the binder is one or more of bentonite, kaolin, attapulgite, clay mineral, silica sol, aluminum sol, aluminum dihydrogen phosphate, aluminate cement, water glass, phosphate cement, preferably kaolin.

[0040] In some embodiments of the present application, the mass ratio of the modified metal / metal oxide nanoparticles to the polymer powder and the binder is (1-3):(5-10):(2-4); preferably 3:8:2.

[0041] In some embodiments of the present application, the forming is extrusion or rolling.

[0042] Specifically, the particle size after forming is 2-5 mm.

[0043] On the other hand, in some embodiments of the present application, the application of the magnetic induction heating fuel purification adsorbent involves loading the magnetic induction heating fuel purification adsorbent into an adsorption bed to adsorb harmful substances in fuel, placing the adsorption bed into an induction coil after adsorption, and generating an alternating magnetic field by electrifying, so that the metal / metal oxide nanoparticles can desorb harmful substances in fuel by magnetic induction heating.

[0044] In some embodiments of the present application, the harmful substances include sulfides, nitrides and polycyclic aromatic hydrocarbons.

[0045] In some embodiments of the present application, the alternating magnetic field has a frequency of 50 Hz-5 MHz, a power of 100-5000 W, and a regeneration temperature of 30-350℃; preferably, the alternating magnetic field has a frequency of 30 kHz, a power of 400 W, and a regeneration temperature of 283℃.

[0046] Example 1

[0047] S1, Fe3O4 nanoparticles and 4-styrene sodium sulfonate were mixed in a mass ratio of 1:5 in 100 mL deionized water, ultrasonic for 30 min, and finally washed and dried to obtain modified Fe3O4 nanoparticles;

[0048] S2, the Fe3O4 nanoparticles were combined with TiO2-SMIP and kaolin in a mass ratio of 1:8:2, and stirred in an aqueous solution at 25℃ for 1 h to form a slurry of the magnetic induction heating fuel oil purification adsorbent;

[0049] S3, the slurry was extruded into a strip, the particle size after molding was 2 mm, and then calcination was performed to obtain a granular magnetic induction heating fuel oil purification adsorbent.

[0050] Example 2

[0051] S1, FeCo50 nanoparticles and 4-styrene sodium sulfonate were mixed in a mass ratio of 1:5 in 100 mL deionized water, ultrasonic for 30 min, and finally washed and dried to obtain modified FeCo50 nanoparticles;

[0052] S2, the FeCo50 nanoparticles were combined with PAF-11 and attapulgite in a mass ratio of 1:8:2, and stirred in an aqueous solution at 25℃ for 1 h to form a slurry of the magnetic induction heating fuel oil purification adsorbent;

[0053] S3, the slurry was extruded into a strip, the particle size after molding was 4 mm, and then calcination was performed to obtain a granular magnetic induction heating fuel oil purification adsorbent.

[0054] Example 3

[0055] S1, γ-Fe2O3 nanoparticles and 4-styrene sodium sulfonate were mixed in a mass ratio of 1:5 in 100 mL deionized water, ultrasonic for 30 min, and finally washed and dried to obtain modified γ-Fe2O3 nanoparticles;

[0056] S2, the γ-Fe2O3 nanoparticles were combined with D-PAF and kaolin in a mass ratio of 1:8:2, and stirred in an aqueous solution at 25℃ for 1 h to form a slurry of the magnetic induction heating fuel oil purification adsorbent;

[0057] S3 extruding the slurry into strip shape, the particle size is 2mm after shaping, then roasting, get granular magnetic induction heating fuel purification adsorbent.

[0058] Example 4

[0059] S1, Fe3O4 nanoparticles and 4-styrene sodium sulfonate are mixed in 100mL deionized water at a mass ratio of 1:5, ultrasonic 30min, finally washed and dried, to obtain modified Fe3O4 nanoparticles;

[0060] S2, the Fe3O4 nanoparticles and D-PAF, attapulgite are combined according to the mass ratio of 2:8:2, and stirred in water solution at 25℃ for 1h, forming the slurry of magnetic induction heating fuel purification adsorbent;

[0061] S3 extruding the slurry into strip shape, the particle size is 4mm after shaping, then roasting, get granular magnetic induction heating fuel purification adsorbent.

[0062] Example 5

[0063] S1, FeCo50 nanoparticles and 4-styrene sodium sulfonate are mixed in 100mL deionized water at a mass ratio of 1:5, ultrasonic 30min, finally washed and dried, to obtain modified FeCo50 nanoparticles;

[0064] S2, the FeCo50 nanoparticles and TiO2-SMIP, kaolin are combined according to the mass ratio of 2:8:2, and stirred in water solution at 25℃ for 1h, forming the slurry of magnetic induction heating fuel purification adsorbent;

[0065] S3 extruding the slurry into strip shape, the particle size is 2mm after shaping, then roasting, get granular magnetic induction heating fuel purification adsorbent.

[0066] Example 6

[0067] S1, Fe3O4 nanoparticles and 4-styrene sodium sulfonate are mixed in 100mL deionized water at a mass ratio of 1:5, ultrasonic 30min, finally washed and dried, to obtain modified Fe3O4 nanoparticles;

[0068] S2, the Fe3O4 nanoparticles and D-PAF, attapulgite are combined according to the mass ratio of 2:8:2, and stirred in water solution at 25℃ for 1h, forming the slurry of magnetic induction heating fuel purification adsorbent;

[0069] S3 extruding the slurry into strip shape, the particle size is 4mm after shaping, then roasting, get granular magnetic induction heating fuel purification adsorbent.

[0070] Example 7

[0071] S1, Fe3O4 nanoparticles and 4-styrene sodium sulfonate were mixed in a mass ratio of 1:5 in 100 mL deionized water, ultrasonic for 30 min, and finally washed and dried to obtain modified Fe3O4 nanoparticles;

[0072] S2, the Fe3O4 nanoparticles were combined with PAF-11, kaolin in a mass ratio of 3:8:2, and stirred in an aqueous solution at 25°C for 1 h to form a slurry of the fuel purification adsorbent for magnetic induction heating;

[0073] S3, the slurry was extruded into a strip shape, the particle size after molding was 2 mm, and then calcination was carried out to obtain a granular fuel purification adsorbent for magnetic induction heating.

[0074] Example 8

[0075] S1, FeCo50 nanoparticles and 4-styrene sodium sulfonate were mixed in a mass ratio of 1:5 in 100 mL deionized water, ultrasonic for 30 min, and finally washed and dried to obtain modified FeCo50 nanoparticles;

[0076] S2, the FeCo50 nanoparticles were combined with D-PAF, attapulgite in a mass ratio of 3:8:2, and stirred in an aqueous solution at 25°C for 1 h to form a slurry of the fuel purification adsorbent for magnetic induction heating;

[0077] S3, the slurry was extruded into a strip shape, the particle size after molding was 4 mm, and then calcination was carried out to obtain a granular fuel purification adsorbent for magnetic induction heating.

[0078] Example 9

[0079] S1, γ-Fe2O3 nanoparticles and 4-styrene sodium sulfonate were mixed in a mass ratio of 1:5 in 100 mL deionized water, ultrasonic for 30 min, and finally washed and dried to obtain modified γ-Fe2O3 nanoparticles;

[0080] S2, the γ-Fe2O3 nanoparticles were combined with TiO2-SMIP, kaolin in a mass ratio of 3:8:2, and stirred in an aqueous solution at 25°C for 1 h to form a slurry of the fuel purification adsorbent for magnetic induction heating;

[0081] S3, the slurry was extruded into a strip shape, the particle size after molding was 2 mm, and then calcination was carried out to obtain a granular fuel purification adsorbent for magnetic induction heating.

[0082] Effect test

[0083] The adsorbents of examples 1-9 were used for the purification of benzothiophene and quinoline, 20g of the adsorbents prepared in examples 1-9 were respectively put into the adsorption bed, desorption was carried out using different heating methods, then the desorption time was analyzed by gas chromatography, and the results and treatment parameters are shown in Tables 1-2:

[0084] Table 1 Desorption results of the adsorbents of examples 1-9 for benzothiophene

[0085]

[0086] Table 2 Desorption results of the adsorbents of examples 1-9 for quinoline

[0087]

[0088]

[0089] It can be seen that the desorption effect of the adsorbents prepared in examples 1-9 by magnetic induction heating is much better than that by heating with hot nitrogen, and the comprehensive desorption time of example 9 is the shortest.

[0090] The above only describes the preferred embodiments of the present application, and it should be noted that for those skilled in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A method for preparing a magnetic induction heating fuel oil purification adsorbent, characterized in that, The preparation steps include the following: Metal / metal oxide nanoparticles and sodium 4-styrenesulfonate were mixed in water, ultrasonically dispersed, washed and dried to obtain modified metal / metal oxide nanoparticles. The modified metal / metal oxide nanoparticles, polymer materials and binders are placed in water and stirred to obtain a slurry of a magnetically induction heated fuel purification adsorbent. The slurry is shaped and calcined to obtain the granular magnetic induction heating fuel purification adsorbent.

2. The preparation method of the magnetic induction heating fuel oil purification adsorbent according to claim 1, characterized in that, The metal / metal oxide nanoparticles include: Fe3O4, γ-Fe2O3, CoFe2O4, and Mn. x Zn 1-x Fe2O4 (0≤x≤1), Ni x Zn 1-x Fe2O4 (0≤x≤1), Zn 1-x Mo x Fe2O4 (0≤x≤1), Li 0-5 Fe 2-5 O4, Mg 1-x Ni x One or more of Fe2O4 (0≤x≤1), alloy powder, and stainless steel.

3. The preparation method of the magnetic induction heating fuel purification adsorbent according to claim 2, characterized in that, The mass ratio of the metal / metal oxide nanoparticles to sodium 4-styrenesulfonate is 1:(1-7).

4. The preparation method of the magnetic induction heating fuel oil purification adsorbent according to claim 3, characterized in that, The polymer material is one or more of the following: porous aromatic framework material, molecularly imprinted polymer, and polymeric ionic liquid.

5. The preparation method of the magnetic induction heating fuel oil purification adsorbent according to claim 4, characterized in that, The adhesive is one or more of bentonite, kaolin, attapulgite, clay minerals, silica sol, alumina sol, aluminum dihydrogen phosphate, aluminate cement, water glass, and phosphate cement.

6. The preparation method of the magnetic induction heating fuel oil purification adsorbent according to claim 5, characterized in that, The mass ratio of the modified metal / metal oxide nanoparticles to the polymer powder and binder is (1-3):(5-10):(2-4).

7. The preparation method of the magnetic induction heating fuel oil purification adsorbent according to claim 6, characterized in that, The molding process specifically refers to extrusion molding or ball rolling molding.

8. The application of the magnetic induction heating fuel oil purification adsorbent according to any one of claims 1-7, characterized in that, The magnetic induction heating fuel purification adsorbent is filled into an adsorption bed to adsorb harmful substances in the fuel. After adsorption, the adsorption bed is placed in an induction coil, and then an alternating magnetic field is generated by energizing. The metal / metal oxide nanoparticles desorb harmful substances from the fuel through magnetic induction heating.

9. The application according to claim 8, characterized in that, The hazardous substances include sulfides, nitrogen compounds, and polycyclic aromatic hydrocarbons.

10. The application according to claim 8, characterized in that, The alternating magnetic field has a frequency of 50Hz-5MHz, a power of 100-5000W, and a regeneration temperature of 30-350℃.

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