Formula and preparation process of oil fume adsorption material prepared from acidified vermiculite

Abstract

The invention provides a formula and a preparation process of a lampblack adsorption material prepared from acidified vermiculite. The formula comprises the following components in parts by weight: 50-70 parts of acidified vermiculite, 9-20 parts of activated carbon particles, 10-12 parts of bamboo charcoal fibers, 8-12 parts of white carbon black, 1-3 parts of a hydrophobic modifier, 8-12 parts of glass fibers, 3-8 parts of sepiolite and 2-5 parts of nano titanium dioxide. The preparation process comprises the following steps: preparation of acidified vermiculite, grinding treatment of vermiculite, mixing treatment, modification treatment, addition of glass fibers, drying molding, impregnation of nano titanium dioxide, and post-treatment and activation. The natural and cheap acidified vermiculite is used as a main raw material, so that the effect of reducing the cost is achieved, and the cost is far lower than that of a traditional adsorption material. After acid treatment, the specific surface area of the acidified vermiculite is obviously increased, the porosity is improved, the adsorption capacity is enhanced, and the acidified vermiculite has a synergistic effect with the active carbon, the bamboo charcoal fiber, the white carbon black and the sepiolite, so that grease, volatile organic compounds and particulate matters in the oil fume can be adsorbed.

Description

Technical Field

[0001] This invention relates to the field of oil fume adsorption materials, and in particular to a formulation and preparation process of an oil fume adsorption material made of acidified vermiculite. Background Technology

[0002] Oil fume adsorption materials mainly include activated carbon, molecular sieves, metal-organic framework materials, thickened oil-absorbing cotton, and polymer adsorbents.

[0003] The aforementioned traditional oil fume adsorption materials generally suffer from high costs. Furthermore, they require replacement once saturated, resulting in significant post-treatment costs. Additionally, in the current oil fume treatment process, improper handling of some adsorption materials after saturation can easily cause secondary pollution, negatively impacting the environment.

[0004] Therefore, this paper provides a formulation and preparation process for an oil fume adsorption material made of acidified vermiculite to address the above problems. Summary of the Invention

[0005] In order to solve the technical problems of high cost, low efficiency and easy secondary pollution of existing oil fume purification technology, this invention provides a formula and preparation process of oil fume adsorption material made of acidified vermiculite.

[0006] The present invention solves the above-mentioned technical problems through the following technical solutions: This invention provides a formula for an oil fume adsorption material made of acidified vermiculite, wherein the oil fume adsorption material formula comprises, by weight: 50-70 parts acidified vermiculite, 9-20 parts activated carbon particles, 10-12 parts bamboo charcoal fiber, 8-12 parts fumed silica, 1-3 parts hydrophobic modifier, 8-12 parts glass fiber, 3-8 parts sepiolite, and 2-5 parts nano titanium dioxide.

[0007] Preferably, the hydrophobic modifier is a silane coupling agent.

[0008] Furthermore, the present invention provides a process for preparing an oil fume adsorbent material made of acidified vermiculite, the preparation process comprising the following steps: (1) Preparation of acidified vermiculite a. Place the vermiculite in a container filled with hydrochloric acid solution and stir it with a stirrer while heating it. b. After heating and stirring, allow the mixture to stand for a period of time, and then drain the hydrochloric acid solution. c. Rinse the remaining vermiculite repeatedly with purified water until the purified water in the container becomes neutral; e. The rinsed vermiculite is dried to obtain acidified vermiculite; (2) Grinding treatment of vermiculite: Acidified vermiculite is ground by a grinding machine to obtain acidified vermiculite powder; (3) Mixing treatment: acidified vermiculite powder, activated carbon granules, bamboo charcoal fiber and white carbon black are poured into a mixer and mixed to obtain a mixture; (4) Modification treatment: Add the mixture to an ethanol solution of hydrophobic modifier and ultrasonically disperse for 30-36 minutes to form a uniform suspension; then add sepiolite to the suspension and continue ultrasonic dispersion for 30-60 minutes to form a mixed suspension. (5) Add glass fiber to the mixed suspension and stir to disperse the glass fiber evenly to form a plastic mud-like substance; (6) Drying and molding: Pour the mud into a mold, press it into a honeycomb shape, and then dry it in a vacuum drying oven at 60-80℃ to obtain a preliminary oil fume adsorption material; (7) The preliminary oil fume adsorption material is immersed in nano titanium dioxide sol and ultrasonically treated for 1-1.5h; then it is dried in a vacuum drying oven at 100-120℃ so that the nano titanium dioxide is loaded on the surface and pores of the oil fume adsorption material. (8) Post-treatment and activation: The prepared material is placed in a high-temperature furnace to remove residual moisture and organic matter, and the final oil fume adsorption material is obtained.

[0009] Preferably, in step (1), a heating jacket is provided on the container holding the hydrochloric acid solution, and the solution is heated by the heating jacket.

[0010] Preferably, in step (1), the vermiculite is heated in the hydrochloric acid solution at a temperature of 80°C, the stirring speed is 60-65 r / min, and the stirring time is 4-4.5 h.

[0011] Preferably, the drying temperature of vermiculite in step (1) is 120°C and the drying time is 4-4.5h.

[0012] Preferably, in step (2), the vermiculite is passed through a 200-mesh sieve after grinding.

[0013] Preferably, in step (3), the activated carbon particles, bamboo charcoal fiber and white carbon black are ground before being mixed to form powder.

[0014] Preferably, in step (8), an inert gas is introduced into the high-temperature furnace so that the prepared material is heat-treated under the protection of the inert gas.

[0015] Preferably, the material prepared in step (8) is subjected to heat treatment at a temperature of 250°C in a high-temperature furnace for a duration of 2 hours.

[0016] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0017] The positive and progressive effects of this invention are as follows: The aforementioned formulation and preparation process of an oil fume adsorption material using acidified vermiculite significantly reduces costs by employing natural and inexpensive acidified vermiculite as the main raw material, making its cost far lower than that of traditional adsorption materials. Furthermore, the acidified vermiculite, after acid treatment, exhibits a significantly increased specific surface area and improved porosity, enhancing its adsorption capacity. It also works synergistically with activated carbon, bamboo charcoal fiber, silica, and sepiolite to adsorb grease, volatile organic compounds, and particulate matter from oil fumes, while simultaneously increasing adsorption capacity and improving adsorption efficiency. Moreover, the addition of nano-titanium dioxide imbues the oil fume adsorption material with catalytic decomposition capabilities, decomposing adsorbed organic matter into carbon dioxide and water. This achieves a synergistic effect of adsorption and degradation, avoiding the secondary pollution problems caused by improper replacement and disposal of traditional adsorption materials after saturation. Simultaneously, the catalytic decomposition function reduces the accumulation of organic matter on the material surface, extending the material's lifespan and lowering replacement frequency and maintenance costs. Attached Figure Description

[0018] Figure 1 This is a process flow diagram of the present invention. Detailed Implementation

[0019] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0020] Example 1 like Figure 1 As shown, a formula for an oil fume adsorption material made of acidified vermiculite is provided. The oil fume adsorption material formula comprises, by weight, 70 parts of acidified vermiculite, 9-20 parts of activated carbon particles, 10-12 parts of bamboo charcoal fiber, 8-12 parts of precipitated silica, 1-3 parts of hydrophobic modifier, 8-12 parts of glass fiber, 3-8 parts of sepiolite, and 2 parts of nano-titanium dioxide.

[0021] The hydrophobic modifier is a silane coupling agent.

[0022] A process for preparing an oil fume adsorbent material using acidified vermiculite, the process comprising the following steps: (1) Preparation of acidified vermiculite a. Place the vermiculite in a container filled with hydrochloric acid solution and stir it with a stirrer while heating it. b. After heating and stirring, allow the mixture to stand for a period of time, and then drain the hydrochloric acid solution. c. Rinse the remaining vermiculite repeatedly with purified water until the purified water in the container becomes neutral; e. The rinsed vermiculite is dried to obtain acidified vermiculite; (2) Grinding treatment of vermiculite: Acidified vermiculite is ground by a grinding machine to obtain acidified vermiculite powder; (3) Mixing treatment: acidified vermiculite powder, activated carbon granules, bamboo charcoal fiber and white carbon black are poured into a mixer and mixed to obtain a mixture; (4) Modification treatment: Add the mixture to an ethanol solution of hydrophobic modifier and ultrasonically disperse for 30-36 minutes to form a uniform suspension; then add sepiolite to the suspension and continue ultrasonic dispersion for 30-60 minutes to form a mixed suspension. (5) Add glass fiber to the mixed suspension and stir to disperse the glass fiber evenly to form a plastic mud-like substance; (6) Drying and molding: Pour the mud into a mold, press it into a honeycomb shape, and then dry it in a vacuum drying oven at 60-80℃ to obtain a preliminary oil fume adsorption material; (7) The preliminary oil fume adsorption material is immersed in nano titanium dioxide sol and ultrasonically treated for 1-1.5h; then it is dried in a vacuum drying oven at 100-120℃ so that the nano titanium dioxide is loaded on the surface and pores of the oil fume adsorption material. (8) Post-treatment and activation: The prepared material is placed in a high-temperature furnace to remove residual moisture and organic matter, and the final oil fume adsorption material is obtained.

[0023] In step (1), a heating jacket is installed on the container holding the hydrochloric acid solution, and the solution is heated by the heating jacket.

[0024] In step (1), the vermiculite is heated in hydrochloric acid solution at a temperature of 80°C, the speed of the stirrer is 60-65 r / min, and the stirring time is 4-4.5 h.

[0025] In step (1), the vermiculite is dried at 120°C for 4-4.5 hours.

[0026] In step (2), the vermiculite is ground and then passed through a 200-mesh sieve.

[0027] In step (3), the activated carbon particles, bamboo charcoal fiber and white carbon black are ground before being mixed to form powder.

[0028] In step (8), an inert gas is introduced into the high-temperature furnace so that the prepared material is heat-treated under the protection of the inert gas.

[0029] The material prepared in step (8) is heat-treated at 250°C in a high-temperature furnace for 2 hours.

[0030] The above embodiments increase the amount of acidified vermiculite, thereby increasing the proportion of acidified vermiculite in the oil fume adsorption material and reducing the cost of the oil fume adsorption material.

[0031] Example 2 like Figure 1 As shown, a formula for an oil fume adsorption material made of acidified vermiculite is provided. The oil fume adsorption material formula comprises, by weight, 50-70 parts of acidified vermiculite, 9-20 parts of activated carbon particles, 10-12 parts of bamboo charcoal fiber, 8-12 parts of precipitated silica, 1-3 parts of hydrophobic modifier, 8-12 parts of glass fiber, 3-8 parts of sepiolite, and 5 parts of nano-titanium dioxide.

[0032] The hydrophobic modifier is a silane coupling agent.

[0033] A process for preparing an oil fume adsorbent material using acidified vermiculite, the process comprising the following steps: (1) Preparation of acidified vermiculite a. Place the vermiculite in a container filled with hydrochloric acid solution and stir it with a stirrer while heating it. b. After heating and stirring, allow the mixture to stand for a period of time, and then drain the hydrochloric acid solution. c. Rinse the remaining vermiculite repeatedly with purified water until the purified water in the container becomes neutral; e. The rinsed vermiculite is dried to obtain acidified vermiculite; (2) Grinding treatment of vermiculite: Acidified vermiculite is ground by a grinding machine to obtain acidified vermiculite powder; (3) Mixing treatment: acidified vermiculite powder, activated carbon granules, bamboo charcoal fiber and white carbon black are poured into a mixer and mixed to obtain a mixture; (4) Modification treatment: Add the mixture to an ethanol solution of hydrophobic modifier and ultrasonically disperse for 30-36 minutes to form a uniform suspension; then add sepiolite to the suspension and continue ultrasonic dispersion for 30-60 minutes to form a mixed suspension. (5) Add glass fiber to the mixed suspension and stir to disperse the glass fiber evenly to form a plastic mud-like substance; (6) Drying and molding: Pour the mud into a mold, press it into a honeycomb shape, and then dry it in a vacuum drying oven at 60-80℃ to obtain a preliminary oil fume adsorption material; (7) The preliminary oil fume adsorption material is immersed in nano titanium dioxide sol and ultrasonically treated for 1-1.5h; then it is dried in a vacuum drying oven at 100-120℃ so that the nano titanium dioxide is loaded on the surface and pores of the oil fume adsorption material. (8) Post-treatment and activation: The prepared material is placed in a high-temperature furnace to remove residual moisture and organic matter, and the final oil fume adsorption material is obtained.

[0034] In step (1), a heating jacket is installed on the container holding the hydrochloric acid solution, and the solution is heated by the heating jacket.

[0035] In step (1), the vermiculite is heated in hydrochloric acid solution at a temperature of 80°C, the speed of the stirrer is 60-65 r / min, and the stirring time is 4-4.5 h.

[0036] In step (1), the vermiculite is dried at 120°C for 4-4.5 hours.

[0037] In step (2), the vermiculite is ground and then passed through a 200-mesh sieve.

[0038] In step (3), the activated carbon particles, bamboo charcoal fiber and white carbon black are ground before being mixed to form powder.

[0039] In step (8), an inert gas is introduced into the high-temperature furnace so that the prepared material is heat-treated under the protection of the inert gas.

[0040] The material prepared in step (8) is heat-treated at 250°C in a high-temperature furnace for 2 hours.

[0041] The above embodiments increase the proportion of nano-titanium dioxide in the oil fume adsorption material, thereby improving its catalytic decomposition ability and enabling the adsorbed organic matter to be decomposed into carbon dioxide and water.

[0042] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A formulation for an oil fume adsorption material made of acidified vermiculite, characterized in that: The formula for the oil fume adsorption material includes, by weight: 50-70 parts of acidified vermiculite, 9-20 parts of activated carbon particles, 10-12 parts of bamboo charcoal fiber, 8-12 parts of precipitated silica, 1-3 parts of hydrophobic modifier, 8-12 parts of glass fiber, 3-8 parts of sepiolite, and 2-5 parts of nano titanium dioxide.

2. The formulation of an oil fume adsorption material made of acidified vermiculite as described in claim 1, characterized in that: The hydrophobic modifier is a silane coupling agent.

3. A preparation process for an oil fume adsorbent material made of acidified vermiculite, derived from the formulation of an oil fume adsorbent material made of acidified vermiculite as described in any one of claims 1-2, is characterized in that: The preparation process includes the following steps: (1) Preparation of acidified vermiculite a. Place the vermiculite in a container filled with hydrochloric acid solution and stir it with a stirrer while heating it. b. After heating and stirring, allow the mixture to stand for a period of time, and then drain the hydrochloric acid solution. c. Rinse the remaining vermiculite repeatedly with purified water until the purified water in the container becomes neutral; e. The rinsed vermiculite is dried to obtain acidified vermiculite; (2) Grinding treatment of vermiculite: Acidified vermiculite is ground by a grinding machine to obtain acidified vermiculite powder; (3) Mixing treatment: acidified vermiculite powder, activated carbon granules, bamboo charcoal fiber and white carbon black are poured into a mixer and mixed to obtain a mixture; (4) Modification treatment: Add the mixture to an ethanol solution of hydrophobic modifier and ultrasonically disperse for 30-36 minutes to form a uniform suspension; then add sepiolite to the suspension and continue ultrasonic dispersion for 30-60 minutes to form a mixed suspension. (5) Add glass fiber to the mixed suspension and stir to disperse the glass fiber evenly to form a plastic mud-like substance; (6) Drying and molding: Pour the mud into a mold, press it into a honeycomb shape, and then dry it in a vacuum drying oven at 60-80℃ to obtain a preliminary oil fume adsorption material; (7) The preliminary oil fume adsorption material is immersed in nano titanium dioxide sol and ultrasonically treated for 1-1.5h; then it is dried in a vacuum drying oven at 100-120℃ so that the nano titanium dioxide is loaded on the surface and pores of the oil fume adsorption material. (8) Post-treatment and activation: The prepared material is placed in a high-temperature furnace to remove residual moisture and organic matter, and the final oil fume adsorption material is obtained.

4. The preparation process of an oil fume adsorbent material made of acidified vermiculite as described in claim 3, characterized in that: In step (1), a heating jacket is installed on the container holding the hydrochloric acid solution, and the solution is heated by the heating jacket.

5. The preparation process of an oil fume adsorbent material made of acidified vermiculite as described in claim 3, characterized in that: In step (1), the vermiculite is heated in hydrochloric acid solution at a temperature of 80°C, the speed of the stirrer is 60-65 r / min, and the stirring time is 4-4.5 h.

6. The preparation process of an oil fume adsorbent material made of acidified vermiculite as described in claim 3, characterized in that: In step (1), the vermiculite is dried at 120°C for 4-4.5 hours.

7. The preparation process of an oil fume adsorbent material made of acidified vermiculite as described in claim 3, characterized in that: In step (2), the vermiculite is ground and then passed through a 200-mesh sieve.

8. The preparation process of an oil fume adsorbent material made of acidified vermiculite as described in claim 3, characterized in that: In step (3), the activated carbon particles, bamboo charcoal fiber and white carbon black are ground before being mixed to form powder.

9. The preparation process of an oil fume adsorbent material made of acidified vermiculite as described in claim 3, characterized in that: In step (8), an inert gas is introduced into the high-temperature furnace so that the prepared material is heat-treated under the protection of the inert gas.

10. The preparation process of an oil fume adsorbent material made of acidified vermiculite as described in claim 3, characterized in that: The material prepared in step (8) is heat-treated at 250°C in a high-temperature furnace for 2 hours.

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