CN115974075A - Production process of honeycomb activated carbon - Google Patents
Production process of honeycomb activated carbon Download PDFInfo
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- CN115974075A CN115974075A CN202211538561.8A CN202211538561A CN115974075A CN 115974075 A CN115974075 A CN 115974075A CN 202211538561 A CN202211538561 A CN 202211538561A CN 115974075 A CN115974075 A CN 115974075A
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- activated carbon
- honeycomb activated
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 166
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 61
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003054 catalyst Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 238000003763 carbonization Methods 0.000 claims abstract description 18
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 16
- 238000010000 carbonizing Methods 0.000 claims abstract description 13
- 238000010298 pulverizing process Methods 0.000 claims abstract description 13
- 239000002023 wood Substances 0.000 claims abstract description 9
- 235000013162 Cocos nucifera Nutrition 0.000 claims abstract description 8
- 244000060011 Cocos nucifera Species 0.000 claims abstract description 8
- 230000004913 activation Effects 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 238000007723 die pressing method Methods 0.000 claims description 7
- 238000010304 firing Methods 0.000 claims description 7
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 abstract description 14
- 239000011148 porous material Substances 0.000 abstract description 10
- 239000007789 gas Substances 0.000 abstract description 9
- 238000001179 sorption measurement Methods 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 8
- 239000002912 waste gas Substances 0.000 abstract description 4
- 239000010815 organic waste Substances 0.000 abstract description 3
- 150000003384 small molecules Chemical class 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 5
- 230000003213 activating effect Effects 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 229960000907 methylthioninium chloride Drugs 0.000 description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
Abstract
The invention belongs to the field of activated carbon production, in particular to a honeycomb activated carbon production process, and provides a scheme aiming at the problem that the adsorption capacity of activated carbon is greatly reduced because adsorption pores of the existing honeycomb activated carbon are easily blocked by an adhesive, wherein the scheme comprises the following steps: s1: and (3) crushing treatment: adding wood chips, shells and coconut shells into a pulverizer to perform pulverization treatment to obtain a pulverized material; s2: drying and carbonizing treatment: drying the crushed material, and putting the dried crushed material into a high-temperature furnace for carbonization to obtain carbide; s3: adding a catalyst: adding a phosphoric acid catalyst to the carbide; s4: and (5) stirring. The product of the invention can effectively remove large, medium and small molecules in organic waste gas, greatly improve the absorption efficiency of the waste gas compared with the traditional honeycomb activated carbon, can absorb carbon tetrachloride, and has the characteristics of high pore volume, high specific surface area and low working wind resistance.
Description
Technical Field
The invention relates to the technical field of activated carbon production, in particular to a honeycomb activated carbon production process.
Background
Activated carbon is one of the most important industrial adsorbents. It has hydrophobic property and developed pore structure and specific surface, so that it is widely used in chemical industry, petroleum, light industry, food, environment protection, national defense and other fields. The performance of the activated carbon is mainly determined by two aspects of the pore structure and the surface chemical property of the activated carbon, generally, the activated carbon rich in micropores has strong advantages in the aspects of adsorbing gas and small molecules in liquid, however, with the continuous improvement of the manufacturing technology and the performance of the activated carbon, the demand of the activated carbon is continuously increased, and the activated carbon product rich in pores is increasingly needed in the fields of water and sewage treatment, chemical products and food decoloration, catalyst carriers, double electric layer capacitors, blood purification and the like.
The honeycomb activated carbon has a unique honeycomb structure, and also has the advantages of high aperture ratio, uniform gas distribution, larger geometric area, shorter diffusion path, wear resistance, strong dust pollution resistance and the like. Therefore, a honeycomb activated carbon has become the subject of research. The development of the honeycomb activated carbon is firstly seen in the reports in Japan, while the domestic research reports about the honeycomb activated carbon are relatively few, and with the continuous deep understanding and research of the structure and the performance of people, the honeycomb activated carbon material must be vigorously popularized and applied. Therefore, the honeycomb activated carbon has wide development prospect.
In the common honeycomb activated carbon in the market, medium activated carbon powder and wood activated carbon powder are mainly used as raw materials, a binder is added for molding, drying, sintering and the like, adsorption pores of the honeycomb activated carbon produced by the process are easily blocked by the binder, so that the adsorption capacity of the activated carbon is greatly reduced, the iodine adsorption value can reach 500mg/g at most, and the methylene blue adsorption value is almost zero, so that the honeycomb activated carbon production process needs to be provided for solving the problems.
Disclosure of Invention
The invention aims to solve the problem that adsorption capacity of activated carbon is greatly reduced due to the fact that adsorption pores of honeycomb activated carbon are easily blocked by an adhesive in the prior art, and provides a production process of honeycomb activated carbon.
In order to achieve the purpose, the invention adopts the following technical scheme:
the production process of the honeycomb activated carbon comprises the following steps:
s1: and (3) crushing treatment: adding wood chips, shells and coconut shells into a grinder to be ground to obtain ground materials;
s2: drying and carbonizing treatment: drying the crushed material, and putting the dried crushed material into a high-temperature furnace for carbonization to obtain carbide;
s3: adding a catalyst: adding a phosphoric acid catalyst to the carbide;
s4: stirring treatment: stirring the carbide and the phosphoric acid catalyst by a stirrer to obtain a mixture;
s5: and (3) die pressing and forming: adding the mixture into a mold for constant-temperature plasticizing and pressing treatment to obtain a honeycomb activated carbon rough blank;
s6: activation treatment: placing the honeycomb activated carbon rough blank into a high-temperature furnace for activation treatment;
s7: drying treatment: and adding the honeycomb activated carbon rough blank into a drying furnace for drying treatment to finally obtain the honeycomb activated carbon.
Preferably, in S1, the rotating speed of the pulverizer is set to be 160-180r/min, and the pulverizing time is set to be 20-25min.
Preferably, in S2, the drying temperature is set to be 50-70 ℃, and the drying time is set to be 100-120min.
Preferably, in S2, the carbonization temperature is set to be 600-800 ℃, and the carbonization time is set to be 80-100min.
Preferably, in S4, the rotating speed of the stirrer is set to be 80-90r/min, and the stirring time is set to be 50-55min.
Preferably, in S5, the mixture is pressed and formed by using a honeycomb die, and the pressing temperature is set to be 50-55 ℃.
Preferably, in S6, the activation temperature is set to 400 ℃, and the activation time is 60-90min.
Preferably, in S7, the temperature of the drying furnace is set to be 70-80 ℃, and the firing time is set to be 4-6h.
In the invention, the production process of the honeycomb activated carbon comprises the following steps:
(1) The honeycomb activated carbon is prepared by carbonizing the crushed material, adding a catalyst, stirring, pressing and molding through a mold, and finally, drying through activation, and the preparation method is simple and clear;
(2) By adding the phosphoric acid catalyst, performing constant-temperature plasticizing and pressing treatment, and finally activating and drying, the pore diameter of the honeycomb activated carbon is not blocked by a binder, so that the using effect of the honeycomb activated carbon can be effectively ensured;
(3) The product can effectively get rid of big, medium, micromolecule among the organic waste gas, has great promotion to the adsorption efficiency of waste gas than traditional honeycomb activated carbon, can adsorb carbon tetrachloride, has the characteristics of high pore volume, high specific surface area and low work windage simultaneously.
The product of the invention can effectively remove large, medium and small molecules in organic waste gas, greatly improve the absorption efficiency of the waste gas compared with the traditional honeycomb activated carbon, can absorb carbon tetrachloride, and has the characteristics of high pore volume, high specific surface area and low working wind resistance.
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 of the embodiments.
Example one
The production process of the honeycomb activated carbon comprises the following steps:
s1: and (3) crushing treatment: adding wood chips, shells and coconut shells into a pulverizer to perform pulverization treatment to obtain a pulverized material;
s2: drying and carbonizing treatment: drying the crushed material, and putting the dried crushed material into a high-temperature furnace for carbonization to obtain carbide;
s3: adding a catalyst: adding a phosphoric acid catalyst to the carbide;
s4: stirring treatment: stirring the carbide and the phosphoric acid catalyst by a stirrer to obtain a mixture;
s5: and (3) die pressing and forming: adding the mixture into a mold for constant-temperature plasticizing and pressing treatment to obtain a honeycomb activated carbon rough blank;
s6: activation treatment: placing the honeycomb activated carbon rough blank into a high-temperature furnace for activation treatment;
s7: drying treatment: and adding the honeycomb activated carbon rough blank into a drying furnace for drying treatment to finally obtain the honeycomb activated carbon.
In this embodiment, in S1, the rotation speed of the pulverizer is set to 160r/min, the pulverizing time is set to 20min, in S2, the drying temperature is set to 50 ℃, the drying time is set to 100min, in S2, the carbonizing temperature is set to 600 ℃, the carbonizing time is set to 80min, in S4, the rotation speed of the stirrer is set to 80r/min, the stirring time is set to 50min, in S5, the mixture is press-molded by using a honeycomb mold, the pressing temperature is set to 50 ℃, in S6, the activating temperature is set to 400 ℃, the activating time is 60min, in S7, the temperature of the drying oven is set to 70 ℃, and the firing time is set to 4h.
Example two
The production process of the honeycomb activated carbon comprises the following steps:
s1: and (3) crushing treatment: adding wood chips, shells and coconut shells into a pulverizer to perform pulverization treatment to obtain a pulverized material;
s2: drying and carbonizing: drying the crushed material, and putting the dried crushed material into a high-temperature furnace for carbonization to obtain carbide;
s3: adding a catalyst: adding a phosphoric acid catalyst to the carbide;
s4: stirring treatment: stirring the carbide and the phosphoric acid catalyst by a stirrer to obtain a mixture;
s5: and (3) die pressing and forming: adding the mixture into a mold for constant-temperature plasticizing and pressing treatment to obtain a honeycomb activated carbon rough blank;
s6: activation treatment: placing the honeycomb activated carbon rough blank into a high-temperature furnace for activation treatment;
s7: drying treatment: and adding the honeycomb activated carbon rough blank into a drying furnace for drying treatment to finally obtain the honeycomb activated carbon.
In this example, in S1, the rotation speed of the pulverizer was set to 165r/min, the pulverizing time was set to 21min, s2, the drying temperature was set to 55 ℃, the drying time was set to 105min, s2, the carbonizing temperature was set to 620 ℃, the carbonizing time was set to 85min, s4, the rotation speed of the stirrer was set to 82r/min, the stirring time was set to 51min, s5, the mixture was press-molded using a honeycomb mold, the pressing temperature was set to 51 ℃, in S6, the activating temperature was set to 400 ℃, the activating time was set to 70min, s7, the temperature of the drying furnace was set to 72 ℃, and the firing time was set to 4h.
EXAMPLE III
The production process of the honeycomb activated carbon comprises the following steps:
s1: and (3) crushing treatment: adding wood chips, shells and coconut shells into a pulverizer to perform pulverization treatment to obtain a pulverized material;
s2: drying and carbonizing: drying the crushed material, and putting the dried crushed material into a high-temperature furnace for carbonization to obtain carbide;
s3: adding a catalyst: adding a phosphoric acid catalyst to the carbide;
s4: stirring treatment: stirring the carbide and the phosphoric acid catalyst by a stirrer to obtain a mixture;
s5: and (3) die pressing and forming: adding the mixture into a mold for constant-temperature plasticizing and pressing treatment to obtain a honeycomb activated carbon rough blank;
s6: activation treatment: placing the honeycomb activated carbon rough blank into a high-temperature furnace for activation treatment;
s7: drying treatment: and adding the honeycomb activated carbon rough blank into a drying furnace for drying treatment to finally obtain the honeycomb activated carbon.
In this embodiment, in S1, the rotation speed of the pulverizer is set to 170r/min, the pulverizing time is set to 23min, in S2, the drying temperature is set to 60 ℃, the drying time is set to 110min, in S2, the carbonization temperature is set to 700 ℃, the carbonization time is set to 90min, in S4, the rotation speed of the stirrer is set to 85r/min, the stirring time is set to 53min, in S5, the mixture is press-molded by using a honeycomb mold, the pressing temperature is set to 53 ℃, in S6, the activation temperature is set to 400 ℃, the activation time is 75min, in S7, the temperature of the drying furnace is set to 75 ℃, and the firing time is set to 5 hours.
Example four
The production process of the honeycomb activated carbon comprises the following steps:
s1: and (3) crushing treatment: adding wood chips, shells and coconut shells into a pulverizer to perform pulverization treatment to obtain a pulverized material;
s2: drying and carbonizing: drying the crushed material, and putting the dried crushed material into a high-temperature furnace for carbonization to obtain carbide;
s3: adding a catalyst: adding a phosphoric acid catalyst to the carbide;
s4: stirring treatment: stirring the carbide and the phosphoric acid catalyst by a stirrer to obtain a mixture;
s5: and (3) die pressing and forming: adding the mixture into a mold for constant-temperature plasticizing and pressing treatment to obtain a honeycomb activated carbon rough blank;
s6: activation treatment: placing the honeycomb activated carbon rough blank into a high-temperature furnace for activation treatment;
s7: drying treatment: and adding the honeycomb activated carbon rough blank into a drying furnace for drying treatment to finally obtain the honeycomb activated carbon.
In this embodiment, in S1, the rotation speed of the pulverizer is set to 175r/min, the pulverizing time is set to 24min, in S2, the drying temperature is set to 65 ℃, the drying time is set to 115min, in S2, the carbonization temperature is set to 750 ℃, the carbonization time is set to 95min, in S4, the rotation speed of the stirrer is set to 88r/min, the stirring time is set to 54min, in S5, the mixture is press-molded by using a honeycomb mold, the pressing temperature is set to 54 ℃, in S6, the activation temperature is set to 400 ℃, the activation time is 80min, in S7, the temperature of the drying furnace is set to 78 ℃, and the firing time is set to 6h.
EXAMPLE five
The production process of the honeycomb activated carbon comprises the following steps:
s1: and (3) crushing treatment: adding wood chips, shells and coconut shells into a grinder to be ground to obtain ground materials;
s2: drying and carbonizing treatment: drying the crushed material, and putting the dried crushed material into a high-temperature furnace for carbonization to obtain carbide;
s3: adding a catalyst: adding a phosphoric acid catalyst to the carbide;
s4: stirring treatment: stirring the carbide and the phosphoric acid catalyst by a stirrer to obtain a mixture;
s5: and (3) die pressing and forming: adding the mixture into a mold for constant-temperature plasticizing and pressing treatment to obtain a honeycomb activated carbon rough blank;
s6: activation treatment: placing the honeycomb activated carbon rough blank into a high-temperature furnace for activation treatment;
s7: drying treatment: and adding the honeycomb activated carbon rough blank into a drying furnace for drying treatment to finally obtain the honeycomb activated carbon.
In this embodiment, in S1, the rotation speed of the pulverizer is set to 180r/min, the pulverizing time is set to 25min, S2, the drying temperature is set to 70 ℃, the drying time is set to 120min, S2, the carbonization temperature is set to 800 ℃, the carbonization time is set to 100min, S4, the rotation speed of the stirrer is set to 90r/min, the stirring time is set to 55min, S5, the mixture is press-molded by using a honeycomb mold, the pressing temperature is set to 55 ℃, in S6, the activation temperature is set to 400 ℃, the activation time is set to 90min, S7, the temperature of the drying furnace is set to 80 ℃, and the firing time is set to 6h.
The study on the honeycomb activated carbon:
the honeycomb activated carbon obtained in example one, example two, example three, example four and example five was tested, six parts of exhaust gas were prepared, and equal amounts of iodine, carbon tetrachloride and methylene blue were present in each part of exhaust gas, and the remaining amounts of iodine, carbon tetrachloride and methylene blue in the exhaust gas were recorded after the exhaust gas passed through the honeycomb activated carbon, and the ordinary honeycomb activated carbon was also set as a control group in the above-described manner, and the iodine absorption amount, the methylene blue absorption amount and the carbon tetrachloride absorption rate were recorded, and the recording results are shown in the following table;
the test result shows that: the iodine absorption capacity of the honeycomb activated carbon prepared by the method can reach 1000mg/g to the maximum, the carbon tetrachloride absorption rate can reach 100%, methylene blue can be well absorbed, the waste gas absorption efficiency is improved by 40% compared with that of the traditional honeycomb activated carbon, and the third embodiment is the best embodiment.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The production process of the honeycomb activated carbon is characterized by comprising the following steps:
s1: and (3) crushing treatment: adding wood chips, shells and coconut shells into a pulverizer to perform pulverization treatment to obtain a pulverized material;
s2: drying and carbonizing: drying the crushed material, and putting the dried crushed material into a high-temperature furnace for carbonization to obtain carbide;
s3: adding a catalyst: adding a phosphoric acid catalyst to the carbide;
s4: stirring treatment: stirring the carbide and the phosphoric acid catalyst by a stirrer to obtain a mixture;
s5: and (3) die pressing and forming: adding the mixture into a mold for constant-temperature plasticizing and pressing treatment to obtain a honeycomb activated carbon rough blank;
s6: activation treatment: placing the honeycomb activated carbon rough blank into a high-temperature furnace for activation treatment;
s7: drying treatment: and adding the honeycomb activated carbon rough blank into a drying furnace for drying treatment to finally obtain the honeycomb activated carbon.
2. The process for producing honeycomb activated carbon according to claim 1, wherein in S1, the rotation speed of the pulverizer is set to 160 to 180r/min, and the pulverizing time is set to 20 to 25min.
3. The process for producing honeycomb activated carbon according to claim 1, wherein in S2, the temperature for drying is set to 50 to 70 ℃ and the time for drying is set to 100 to 120min.
4. The process for producing honeycomb activated carbon according to claim 1, wherein in S2, the temperature of carbonization is set to 600 to 800 ℃ and the time of carbonization is set to 80 to 100min.
5. The process of claim 1, wherein in step S4, the rotation speed of the stirrer is set to 80-90r/min, and the stirring time is set to 50-55min.
6. The process for producing honeycomb activated carbon according to claim 1, wherein in the step S5, the mixture is pressed and molded by using a honeycomb mold, and the pressing temperature is set to 50-55 ℃.
7. The process for producing honeycomb activated carbon according to claim 1, wherein in the step S6, the temperature for activation is set to 400 ℃ and the time for activation is 60 to 90min.
8. The process for producing honeycomb activated carbon according to claim 1, wherein in S7, the temperature of the drying furnace is set to 70 to 80 ℃ and the firing time is set to 4 to 6 hours.
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| CN202211538561.8A CN115974075A (en) | 2022-12-02 | 2022-12-02 | Production process of honeycomb activated carbon |
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Citations (9)
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|---|---|---|---|---|
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2022
- 2022-12-02 CN CN202211538561.8A patent/CN115974075A/en active Pending
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