CN112142049A - Method for preparing fiber adsorption material by using waste fabric - Google Patents
Method for preparing fiber adsorption material by using waste fabric Download PDFInfo
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- CN112142049A CN112142049A CN202010963253.4A CN202010963253A CN112142049A CN 112142049 A CN112142049 A CN 112142049A CN 202010963253 A CN202010963253 A CN 202010963253A CN 112142049 A CN112142049 A CN 112142049A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a method for preparing a fiber adsorbing material by using waste fabrics, which comprises the following steps: s1, crushing the waste fabric for the first time; s2, melting the waste fabric; s3, cooling the waste fabric; s4, carrying out secondary crushing on the waste fabric; s5, stirring the waste fabric; s6, feeding waste fabrics; s7, carbonizing the waste fabric; s8, preparing activated carbon, and introducing water vapor into a heating furnace for cooling to prepare microporous activated carbon; s9, preparing a fiber adsorbing material, namely mixing the microporous activated carbon obtained in the step S8 with a binder to prepare the fiber adsorbing material. The technical scheme of the invention aims to provide a method for preparing a fiber adsorption material by using waste fabrics, which has the advantages of low cost, good adsorption effect and environmental friendliness.
Description
Technical Field
The invention relates to the technical field of preparation of fiber adsorbing materials, in particular to a method for preparing a fiber adsorbing material by utilizing waste fabrics.
Background
In the world of clothes and food, the fabric is various in types and materials, and when the waste fabric has no regeneration property or is difficult to degrade, the waste fabric is incinerated to generate electricity in a general disposal method.
However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems:
the production amount of waste fabrics is huge about 4000 ten thousand tons every year in the world, the fabrics belong to high polymer materials, and the fabrics can be carbonized to manufacture fiber adsorption materials according to the characteristics of the high polymer materials, so that the waste fabrics can be utilized.
Disclosure of Invention
The invention mainly aims to provide a method for preparing a fiber adsorbing material by using waste fabrics, and aims to provide a method for preparing the fiber adsorbing material by using the waste fabrics, which has the advantages of low cost, good adsorption effect and environmental friendliness.
In order to achieve the purpose, the method for preparing the fiber adsorbing material by using the waste fabric provided by the invention comprises the following steps of:
s1, crushing the waste fabric into cloth strips in one step;
s2, melting the waste fabric, heating and melting the cloth strip-shaped fabric through a double-screw machine, and extruding a strip-shaped object with a circular section through an extrusion hole;
s3, cooling the waste fabric, namely, placing the strip-shaped object with the circular section in the step S2 into a water tank for cooling;
s4, secondary crushing of the waste fabric, crushing the cooled strips into granules;
s5, stirring the waste fabric, adding 70-90 parts by mass of the granular substances in the step S4 into a stirrer, adding 5-10 parts by mass of chlorate, 5-10 parts by mass of strong base and 5-10 parts by mass of carbonate, and fully stirring and mixing;
s6, feeding waste fabrics, namely adding the mixed fabrics in the step S5 into a carbonization furnace through a feeder to be carbonized, and introducing auxiliary gas into the feeder;
s7, carbonizing the waste fabrics, wherein the carbonization furnace adopts a vertical multi-section heating temperature control carbonization furnace, and the temperature control range is 200-900 ℃;
s8, preparing activated carbon, and introducing water vapor into a heating furnace for cooling to prepare microporous activated carbon;
s9, preparing a fiber adsorbing material, namely mixing the microporous activated carbon obtained in the step S8 with a binder to prepare the fiber adsorbing material.
In one embodiment, in the step S2, the twin-screw extruder is heated at a temperature of 200 to 300 ℃ and extrudes a bar having a diameter of 5 to 10 mm.
In one embodiment, in the step S2, the rotation speed of the twin-screw machine is 6-20 r/min.
In one embodiment, in the step S4, the length of the pellets is 5mm to 20 mm.
In one embodiment, in the step S5, the chlorate is one or more of ammonium chlorate, sodium chlorate, potassium chlorate and calcium chlorate.
In one embodiment, in the step S5, the strong base is one or more of lithium hydroxide, sodium hydroxide and potassium hydroxide.
In one embodiment, in the step S5, the carbonate is one or more of ammonium carbonate, lithium carbonate, sodium carbonate, and potassium carbonate.
In one embodiment, in the step S6, the auxiliary gas is carbon dioxide, nitrogen or argon.
In one embodiment, in the step S7, the carbonization furnace is a vertical five-stage heating temperature-controlled carbonization furnace, and the five-stage heating temperatures are 200 ℃, 400 ℃, 600 ℃, 800 ℃ and 800 ℃.
In one example, in step S5, 80 parts by mass of the granular material, 5 parts by mass of the chlorate salt, 5 parts by mass of the strong base, and 5 parts by mass of the carbonate salt are added to the mixer and sufficiently stirred and mixed.
According to the technical scheme, the waste fabric is subjected to the steps of primary crushing, melting, cooling, secondary crushing, stirring, feeding, carbonizing, introducing steam and the like to prepare the microporous activated carbon, and then the microporous activated carbon is mixed with the adhesive to prepare the fiber adsorption material. Due to the adoption of the technical means of preparing the fiber adsorption material by the waste fabric, the technical problems that the waste fabric is large in yield and cannot be well utilized in the prior art are effectively solved, and the technical effects of low cost, good adsorption effect and environmental friendliness are further realized.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method for preparing a fiber adsorbing material by utilizing waste fabrics, which is used for preparing the fiber adsorbing material by utilizing the waste fabrics.
In order to better understand the above technical solutions, the following detailed descriptions will be provided with reference to specific embodiments.
In the embodiment of the invention, the invention discloses a method for preparing a fiber adsorbing material by using waste fabrics, which comprises the following steps:
s1, crushing the waste fabric into cloth strips in one step;
s2, melting the waste fabric, heating and melting the cloth strip-shaped fabric through a double-screw machine, and extruding a strip-shaped object with a circular section through an extrusion hole;
s3, cooling the waste fabric, namely, placing the strip-shaped object with the circular section in the step S2 into a water tank for cooling;
s4, secondary crushing of the waste fabric, crushing the cooled strips into granules;
s5, stirring the waste fabric, adding 70-90 parts by mass of the granular substances in the step S4 into a stirrer, adding 5-10 parts by mass of chlorate, 5-10 parts by mass of strong base and 5-10 parts by mass of carbonate, and fully stirring and mixing;
s6, feeding waste fabrics, namely adding the mixed fabrics in the step S5 into a carbonization furnace through a feeder to be carbonized, and introducing auxiliary gas into the feeder;
s7, carbonizing the waste fabrics, wherein the carbonization furnace adopts a vertical multi-section heating temperature control carbonization furnace, and the temperature control range is 200-900 ℃;
s8, preparing activated carbon, and introducing water vapor into a heating furnace for cooling to prepare microporous activated carbon;
s9, preparing a fiber adsorbing material, namely mixing the microporous activated carbon obtained in the step S8 with a binder to prepare the fiber adsorbing material.
According to the technical scheme, the waste fabric is subjected to the steps of primary crushing, melting, cooling, secondary crushing, stirring, feeding, carbonizing, introducing steam and the like to prepare the microporous activated carbon, and then the microporous activated carbon is mixed with the adhesive to prepare the fiber adsorption material. Due to the adoption of the technical means of preparing the fiber adsorption material by the waste fabric, the technical problems that the waste fabric is large in yield and cannot be well utilized in the prior art are effectively solved, and the technical effects of low cost, good adsorption effect and environmental friendliness are further realized.
In an embodiment of the invention, the format of the water bath used to cool the noodles is 0.4m by 20 m.
In the present example, the twin-screw machine was heated at 200 to 300 ℃ in the step of S2, and a strand having a diameter of 5 to 10mm was extruded.
In the embodiment of the invention, in the step S2, the rotating speed of the double-screw machine is 6-20 r/min.
In the present example, the length of the pellets in step S4 was 5mm to 20 mm.
In an embodiment of the present invention, in the step S5, the chlorate is one or more of ammonium chlorate, sodium chlorate, potassium chlorate and calcium chlorate.
In an embodiment of the present invention, in the step S5, the strong base is one or more of lithium hydroxide, sodium hydroxide and potassium hydroxide.
In the embodiment of the present invention, in the S5 step, the carbonate is one or more of ammonium carbonate, lithium carbonate, sodium carbonate, and potassium carbonate.
In an embodiment of the present invention, in the step of S6, the auxiliary gas is carbon dioxide, nitrogen or argon.
In the embodiment of the present invention, in the step S8, water vapor is used as the cooling medium, the activator, and the protective gas.
The invention is further illustrated below by means of three examples.
Example one
The method for preparing the fiber adsorbing material by utilizing the waste fabric comprises the following steps:
s1, crushing the waste fabric into cloth strips by one-time crushing of the waste fabric, wherein the specification of the cloth strips is 5cm by 8 cm;
s2, melting the waste fabric, heating and melting the cloth strip fabric through a double-screw machine, extruding a strip with a circular section through an extrusion hole, setting the melting temperature of the double-screw machine to be 250 ℃, the rotating speed of the double-screw machine to be 15r/min, and the diameter of the extruded strip to be 3 mm;
s3, cooling the waste fabric, namely, placing the strip-shaped object with the circular section in the step S2 in a water tank for cooling, wherein the specification of the water tank is 0.4m by 20 m;
s4, carrying out secondary crushing on the waste fabric, and crushing the cooled strips into granules with the length of 5 mm;
s5, stirring the waste fabric, adding 80 parts by mass of the granular substances in the step S4 into a stirrer, adding 5 parts by mass of chlorate, 5 parts by mass of strong base and 5 parts by mass of carbonate, and fully stirring and mixing;
s6, feeding waste fabrics, namely adding the mixed fabrics in the step S5 into a carbonization furnace through a feeder to be carbonized, and introducing nitrogen into the feeder to serve as auxiliary gas;
s7, carbonizing the waste fabric, wherein the carbonization furnace is a vertical five-section heating temperature control carbonization furnace, and the five-section heating temperatures are respectively 200 ℃, 400 ℃, 600 ℃, 800 ℃ and 800 ℃;
s8, preparing activated carbon, and introducing water vapor into a heating furnace for cooling to prepare microporous activated carbon;
s9, preparing a fiber adsorbing material, namely mixing the microporous activated carbon obtained in the step S8 with a binder to prepare the fiber adsorbing material.
Example two
The method for preparing the fiber adsorbing material by utilizing the waste fabric comprises the following steps:
s1, crushing the waste fabric into cloth strips by one-time crushing of the waste fabric, wherein the specification of the cloth strips is 5cm by 8 cm;
s2, melting the waste fabric, heating and melting the cloth strip fabric through a double-screw machine, extruding a strip with a circular section through an extrusion hole, setting the melting temperature of the double-screw machine to be 250 ℃, the rotating speed of the double-screw machine to be 15r/min, and the diameter of the extruded strip to be 3 mm;
s3, cooling the waste fabric, namely, placing the strip-shaped object with the circular section in the step S2 in a water tank for cooling, wherein the specification of the water tank is 0.4m by 20 m;
s4, carrying out secondary crushing on the waste fabric, and crushing the cooled strips into granules with the length of 5 mm;
s5, stirring the waste fabric, adding 80 parts by mass of the granular substances in the step S4 into a stirrer, adding 5 parts by mass of chlorate, 7 parts by mass of strong base and 6 parts by mass of carbonate, and fully stirring and mixing;
s6, feeding waste fabrics, namely adding the mixed fabrics in the step S5 into a carbonization furnace through a feeder to be carbonized, and introducing nitrogen into the feeder to serve as auxiliary gas;
s7, carbonizing the waste fabric, wherein the carbonization furnace is a vertical five-section heating temperature control carbonization furnace, and the five-section heating temperatures are 210 ℃, 410 ℃, 610 ℃, 810 ℃ and 810 ℃ respectively;
s8, preparing activated carbon, and introducing water vapor into a heating furnace for cooling to prepare microporous activated carbon;
s9, preparing a fiber adsorbing material, namely mixing the microporous activated carbon obtained in the step S8 with a binder to prepare the fiber adsorbing material.
EXAMPLE III
The method for preparing the fiber adsorbing material by utilizing the waste fabric comprises the following steps:
s1, crushing the waste fabric into cloth strips by one-time crushing of the waste fabric, wherein the specification of the cloth strips is 5cm x 10 cm;
s2, melting the waste fabric, heating and melting the cloth strip fabric through a double-screw machine, extruding a strip with a circular section through an extrusion hole, setting the melting temperature of the double-screw machine to be 300 ℃, the rotating speed of the double-screw machine to be 20r/min, and the diameter of the extruded strip to be 3 mm;
s3, cooling the waste fabric, namely, placing the strip-shaped object with the circular section in the step S2 in a water tank for cooling, wherein the specification of the water tank is 0.4m by 20 m;
s4, carrying out secondary crushing on the waste fabric, and crushing the cooled strips into granules with the length of 5 mm;
s5, stirring the waste fabric, adding 80 parts by mass of the granular substances in the step S4 into a stirrer, adding 5 parts by mass of chlorate, 5 parts by mass of strong base and 10 parts by mass of carbonate, and fully stirring and mixing;
s6, feeding waste fabrics, namely adding the mixed fabrics in the step S5 into a carbonization furnace through a feeder to be carbonized, and introducing nitrogen into the feeder to serve as auxiliary gas;
s7, carbonizing the waste fabric, wherein the carbonization furnace is a vertical five-section heating temperature control carbonization furnace, and the five-section heating temperatures are 260 ℃, 460 ℃, 66 ℃, 86 ℃ and 860 ℃ respectively;
s8, preparing activated carbon, and introducing water vapor into a heating furnace for cooling to prepare microporous activated carbon;
s9, preparing a fiber adsorbing material, namely mixing the microporous activated carbon obtained in the step S8 with a binder to prepare the fiber adsorbing material.
200 kg of the fiber adsorbing materials prepared in the three embodiments are respectively placed in an activated carbon box for a waste gas adsorbing experiment, and the specific experimental data are as follows:
TABLE 1 statistical table of exhaust gas adsorption amount and adsorption rate
From the experimental data in table 1, it can be seen that the fiber adsorbing material prepared by the method has strong adsorption capacity, and organic volatile matters and SO2NO and NO2The adsorption rate of the adsorbent can reach more than 90 percent.
200 kg of the fiber adsorbing materials prepared in the three embodiments are respectively taken for 1000 times of adsorption-desorption experiments, the initial weight and the weight after 1000 times of adsorption-desorption are recorded, and the specific experimental data are as follows:
TABLE 2 weight loss ratio of adsorption-steam heating desorption 1000 times
Detecting items | Example 1 | Example 2 | Example 3 |
Initial total amount/Kg | 200 | 200 | 200 |
weight/Kg after 1000 times of adsorption-desorption | 180 | 185 | 187 |
Weight loss ratio | 10% | 7.5% | 6.5% |
200 kg of the products of the three groups of examples after 1000 times of adsorption-desorption experiments are respectively taken and placed in an activated carbon box again for carrying out an experiment of adsorbing waste gas, and the specific experimental data are as follows:
TABLE 3 statistical table of the adsorption amount and adsorption rate of the exhaust gas after 1000 times of adsorption-desorption
From the experimental data in tables 2 and 3, it can be found that the fiber adsorbing material prepared by the invention has low weight loss rate after 1000 times of adsorption-desorption, and simultaneously maintains good adsorption capacity, organic volatile matter and SO2NO and NO2The adsorption rate of the waste fabric can still reach more than 90 percent, so that the fiber adsorption material prepared by the waste fabric can be repeatedly used for many times, and the cost of waste gas treatment is greatly reduced.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents that can be made by the present invention in the claims or directly/indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A method for preparing a fiber adsorption material by using waste fabrics is characterized by comprising the following steps:
s1, crushing the waste fabric into cloth strips in one step;
s2, melting the waste fabric, heating and melting the cloth strip-shaped fabric through a double-screw machine, and extruding a strip-shaped object with a circular section through an extrusion hole;
s3, cooling the waste fabric, namely, placing the strip-shaped object with the circular section in the step S2 into a water tank for cooling;
s4, secondary crushing of the waste fabric, crushing the cooled strips into granules;
s5, stirring the waste fabric, adding 70-90 parts by mass of the granular substances in the step S4 into a stirrer, adding 5-10 parts by mass of chlorate, 5-10 parts by mass of strong base and 5-10 parts by mass of carbonate, and fully stirring and mixing;
s6, feeding waste fabrics, namely adding the mixed fabrics in the step S5 into a carbonization furnace through a feeder to be carbonized, and introducing auxiliary gas into the feeder;
s7, carbonizing the waste fabrics, wherein the carbonization furnace adopts a vertical multi-section heating temperature control carbonization furnace, and the temperature control range is 200-900 ℃;
s8, preparing activated carbon, and introducing water vapor into a heating furnace for cooling to prepare microporous activated carbon;
s9, preparing a fiber adsorbing material, namely mixing the microporous activated carbon obtained in the step S8 with a binder to prepare the fiber adsorbing material.
2. The method for preparing a fiber adsorption material by using waste fabrics as claimed in claim 1, wherein in the step of S2, the heating temperature of the twin-screw machine is 200-300 ℃, and strips with the diameter of 5-10 mm are extruded.
3. The method for preparing the fiber adsorbing material by using the waste fabric as claimed in claim 1, wherein in the step S2, the rotating speed of the double-screw machine is 6-20 r/min.
4. The method for preparing a fiber adsorbent material using waste fabrics according to claim 1, wherein the length of the granules is 5mm to 20mm in the step of S4.
5. The method for preparing a fiber adsorbent material by using waste fabrics according to claim 1, wherein in the step of S5, the chlorate is one or more of ammonium chlorate, sodium chlorate, potassium chlorate and calcium chlorate.
6. The method for preparing a fiber adsorbent material using waste fabrics according to claim 1, wherein in the step of S5, the strong base is one or more of lithium hydroxide, sodium hydroxide and potassium hydroxide.
7. The method for preparing a fiber adsorbent material using waste fabrics according to claim 1, wherein in the step S5, the carbonate is one or more of ammonium carbonate, lithium carbonate, sodium carbonate and potassium carbonate.
8. The method for preparing a fiber adsorbent material using waste fabrics according to claim 1, wherein in the step of S6, the auxiliary gas is carbon dioxide, nitrogen or argon.
9. The method for preparing a fiber adsorption material by using waste fabrics as claimed in claim 1, wherein in the step S7, the carbonization furnace is a vertical five-section heating temperature-controlled carbonization furnace, and the five-section heating temperatures are 200 ℃, 400 ℃, 600 ℃, 800 ℃ and 800 ℃ respectively.
10. The method for preparing a fiber adsorbent material using waste fabrics according to claim 1, wherein in the step of S5, 80 parts by mass of the granular material, 5 parts by mass of the chlorate, 5 parts by mass of the strong base, and 5 parts by mass of the carbonate are added to the mixer and mixed thoroughly.
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Cited By (1)
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WO2024151849A1 (en) * | 2023-01-13 | 2024-07-18 | Entegris, Inc. | Adsorbent that contains potassium hydroxide and potassium carbonate, and related methods and devices |
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Application publication date: 20201229 |