CN113385173B - Preparation method and application of coral stacked biomass charcoal-based catalyst - Google Patents

Preparation method and application of coral stacked biomass charcoal-based catalyst Download PDF

Info

Publication number
CN113385173B
CN113385173B CN202110715066.9A CN202110715066A CN113385173B CN 113385173 B CN113385173 B CN 113385173B CN 202110715066 A CN202110715066 A CN 202110715066A CN 113385173 B CN113385173 B CN 113385173B
Authority
CN
China
Prior art keywords
biomass
based catalyst
coral
stacked
charcoal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110715066.9A
Other languages
Chinese (zh)
Other versions
CN113385173A (en
Inventor
包加成
李凯
王飞
冯嘉予
孙鑫
宁平
王驰
宋辛
杨洁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunming University of Science and Technology
Original Assignee
Kunming University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunming University of Science and Technology filed Critical Kunming University of Science and Technology
Priority to CN202110715066.9A priority Critical patent/CN113385173B/en
Publication of CN113385173A publication Critical patent/CN113385173A/en
Application granted granted Critical
Publication of CN113385173B publication Critical patent/CN113385173B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/72—Copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8603—Removing sulfur compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8603—Removing sulfur compounds
    • B01D53/8606—Removing sulfur compounds only one sulfur compound other than sulfur oxides or hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8603—Removing sulfur compounds
    • B01D53/8612—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/745—Iron
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel

Abstract

The invention discloses a preparation method of a coral stacked biomass charcoal-based catalyst, which comprises the steps of cleaning and crushing biomass raw materials, and carbonizing the biomass raw materials under the protection of inert gas; grinding, washing and cleaning with water to remove impurities on the surface of the carbonized material, and drying to obtain a biomass charcoal-based carrier; putting a biomass charcoal-based carrier, a nitrate solution and nitric acid into a reaction kettle for mixing, and then carrying out hydrothermal reaction to prepare a biomass-based catalyst precursor; roasting the biomass-based catalyst precursor in an inert atmosphere to obtain a coral stacked biomass-based catalyst; compared with the traditional impregnation method, the catalyst prepared by the method has the advantages that the active component has a unique morphology structure, so that the active component is exposed more fully, and the catalyst can adapt to different flue gas atmospheres to remove different sulfur-containing gases; the activity is higher, the penetration time is longer, and the sulfur capacity is larger; and the raw materials have wide sources and low cost, and are suitable for industrial production and market popularization and application.

Description

Preparation method and application of coral stacked biomass charcoal-based catalyst
Technical Field
The invention belongs to the field of environmental engineering, and particularly relates to a preparation method of a coral stacked biomass charcoal-based catalyst and a method for deeply removing sulfur-containing gas in different flue gas atmospheres by using the catalyst.
Background
In recent years, biochar has attracted general attention for its wide application in the fields of agriculture, environment, energy, and the like. The biochar not only has the characteristics of activated carbon, but also has a better microporous structure and a larger specific surface area, shows better activity in some adsorption and catalytic reactions, and has the remarkable characteristics of wide raw material sources, low production cost, ecological safety, no pollution, large-area popularization and the like. Common biochar comprises charcoal, straw charcoal, bamboo charcoal, peanut shell charcoal, rice shell charcoal, walnut shell charcoal, coconut shell charcoal and the like. With the continuous promotion of the strategies of 'carbon neutralization' and 'carbon emission reduction' in China, the traditional active carbon made of coal and wood is not beneficial to sustainable development and reasonable utilization of energy. The method for preparing the biochar by using the cheap biomass waste as the raw material can solve the problem of treatment of the biomass waste, and the biomass is recycled, so that the method has higher resource recovery value and effectively realizes carbon emission reduction compared with air pollution and large carbon emission caused by direct combustion, composting and other treatment.
In the industries of closed furnace industrial furnaces, petroleum coking and the like, the flue gas atmosphere mainly takes strong reducing atmosphere/oxygen-free atmosphere as the main part, and trace COS and CS are discharged in the industrial production and use process 2 Organic sulfur represented by and H 2 S is a typical inorganic sulfur. The smelting industry such as metallurgy and the like mainly uses oxidizing atmosphere as main emission flue gas caused by oxygen-enriched blowing and forced oxygen introduction in molten pool smelting, wherein the gaseous sulfur-containing substances mainly comprise low-concentration SO 2 Mainly comprises the following steps. In view of the growing severity of atmospheric pollution and the necessity of resource recovery, biochar catalysts are gaining attention in the treatment of atmospheric pollution. In the past research, various sulfur-containing gases are removed by using a biomass waste synthetic carbon-based material, but the applicability is poor and the material cannot be used across industries; and the prepared biochar-based desulfurization material is severely limited in desulfurization efficiency because the dispersibility of metal, the shape and size of a carrier and the type of a loaded metal precursor are not considered in the preparation process.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a preparation method of a coral stacked biomass charcoal-based catalyst for deeply purifying sulfur-containing tail gas; the biomass charcoal-based catalyst can selectively remove various sulfur-containing gases in a strong reducing atmosphere, and can also remove the sulfur-containing gases in an oxidizing atmosphere; the hydro-thermal synthesis method adopted by the method does not need to carry out physicochemical or chemical activation for reaming, shortens the manufacturing process of the catalyst, reduces the use of chemicals, and in addition, does not need to carry out high-temperature preparation in the roasting process of the precursor, thereby reducing the energy consumption; the appearance of the traditional supported activated carbon catalyst can be obtained by the method, and the characteristic of multi-dimensional solid presented by the appearance determines the unique desulfurization performance of the catalyst; the biomass charcoal-based catalyst with uniform metal dispersion, rich surface active sites and specific morphology is prepared by the method.
The preparation method of the coral stack-shaped biomass charcoal-based catalyst for deeply purifying the sulfur-containing tail gas comprises the following steps:
(1) cleaning and crushing a biomass raw material, and roasting at 500-900 ℃ for 1-4 h under the protection of inert gas;
(2) grinding the carbonized product obtained in the step (1) to 40-60 meshes, washing with water to remove impurities on the surface of the carbonized material, and drying at 100-110 ℃ for 10-12 h to obtain a biomass carbon-based carrier;
(3) putting the biomass charcoal-based carrier, the nitrate solution and the nitric acid in the step (2) into a reaction kettle for mixing, and then carrying out hydrothermal reaction to prepare a biomass-based catalyst precursor;
(4) and (4) roasting the biomass-based catalyst precursor in the step (3) for 2-4 hours at 200-350 ℃ in an inert atmosphere to obtain the coral stacked biomass-based catalyst.
The biomass raw material is one of straw, tobacco stem, walnut shell, peanut shell and bamboo.
The addition amount of the nitrate is 50-180% of the mass of the biomass carbon-based carrier, and the addition amount of the nitric acid is 1-5% of the total volume of the reaction system solution (V nitrate solution + V nitric acid).
The nitrate is one or more of copper nitrate, ferric nitrate, zinc nitrate, nickel nitrate and cobalt nitrate.
The hydrothermal reaction temperature is 140-180 ℃, and the hydrothermal reaction time is 8-12 h.
In the step (4), the inert atmosphere is a nitrogen atmosphere.
The invention also aims to apply the coral stacked biomass charcoal-based catalyst prepared by the method to deep purification of sulfur-containing tail gas.
The method has the advantages or positive effects that:
(1) compared with the traditional impregnation method, the catalyst formed by the preparation method disclosed by the invention has the active component of basic copper carbonate, is different from the traditional copper oxide, and has the active component appearance of coral stacking and a multi-dimensional stereo state, so that the active component is more fully exposed, the contact with sulfur-containing gaseous pollutants is more favorable, and the reaction is more rapid.
(2) The biomass raw material is rich, has wide source and low cost, and has good application prospect; the prepared catalyst has high removal efficiency of sulfur-containing gas under different atmosphere conditions, long penetration time and large sulfur capacity; can meet the requirement of deep desulfurization, meets the requirement of synthetic feed gas, and provides a feasible application direction for deep utilization of multi-atmosphere sulfur-containing flue gas.
Drawings
FIG. 1 is a schematic diagram of the morphology of a coral stacked biomass charcoal-based catalyst in example 1;
FIG. 2 is a graph showing the effect of removing COS in example 1;
FIG. 3 is a schematic view of a catalyst prepared by a conventional impregnation method;
FIG. 4 is a graph showing the effect of a catalyst prepared by a conventional impregnation method on removing COS;
FIG. 5 shows CS in example 2 of the present invention 2 Removing effect graph;
FIG. 6 is H in example 3 of the present invention 2 S, removing an effect graph;
FIG. 7 shows an embodiment of the present invention4 removing COS and CS at the same time 2 、H 2 S, removing an effect graph;
FIG. 8 is SO in example 5 of the present invention 2 Removing the effect graph;
FIG. 9 is a graph showing the effect of removing COS in example 6.
Detailed Description
In order to further illustrate the present invention, the methods provided herein are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. 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.
Example 1: the preparation method of the coral stacked biomass charcoal-based catalyst comprises the following steps:
(1) taking walnut shells as a biomass raw material, and carbonizing the walnut shells for 3 hours at 700 ℃ in a nitrogen atmosphere to obtain a carbide;
(2) grinding the carbide to 40-60 meshes, washing the carbide with water for 3 times, and drying the washed carbide in an electric furnace at 105 ℃ for 12 hours to obtain a biomass-based carbonized carrier;
(3) adding a biomass-based carbonized carrier into a reaction kettle containing a copper nitrate solution (the mass of copper nitrate in the copper nitrate solution is 90% of the mass of the biomass-based carbonized carrier), then adding nitric acid accounting for 2.5% of the total volume of the reaction system solution (the copper nitrate solution and the nitric acid), uniformly mixing, and performing hydrothermal treatment at 180 ℃ for 9 hours to obtain a biomass-based catalyst precursor;
(4) placing the biomass-based catalyst precursor in a tubular furnace, and roasting for 2h at 350 ℃ in a nitrogen atmosphere to obtain a coral stacked biomass-based catalyst; the appearance diagram of the catalyst is shown in FIG. 1, and it can be seen that the catalyst of this example is in a multi-dimensional state, and the appearance is in a coral stack shape;
the coral stacked biomass-based catalyst prepared by the method is used for treating sulfur-containing tail gas, the concentration of COS in the sulfur-containing gas is 600ppm, and nitrogen is used as carrier gasThe gas contains 0.5 percent of oxygen, the prepared catalyst is placed in a fixed bed reactor, and the space velocity is 20000 h -1 The reaction temperature is 90 ℃; the breakthrough was set when the outlet COS concentration reached 10ppm, and as can be seen from FIG. 2, the catalyst breakthrough time was maintained for 330 min.
Comparative example: taking a catalyst prepared by a common impregnation method as a contrast, and taking walnut shells as a biomass raw material, and carbonizing the walnut shells for 3 hours at 700 ℃ in a nitrogen atmosphere to obtain a carbide; grinding the carbide to 40-60 meshes, washing the carbide with water for 3 times, drying the carbide in an electric furnace at 105 ℃ for 12 hours, and adding the biomass-based carbonized carrier into a solution containing copper nitrate to dip for 30 min; taking out, and roasting at 350 deg.C for 2h in nitrogen atmosphere to obtain catalyst, wherein the appearance figure is shown in FIG. 3, FIG. 4 is a COS removing effect figure of the catalyst, and the catalyst penetration time is 120 min.
Example 2: the preparation method of the coral stacked biomass charcoal-based catalyst comprises the following steps:
(1) taking straws as a biomass raw material, and carbonizing for 2h at 800 ℃ in a nitrogen atmosphere to obtain a carbide;
(2) grinding the carbide to 40-60 meshes, washing with water for 3 times, and drying in an electric furnace at 100 ℃ for 12 hours to obtain a biomass-based carbonized carrier;
(3) adding a biomass-based carbonized carrier into a reaction kettle containing a copper nitrate solution (the mass of copper nitrate in the copper nitrate solution is 150% of the mass of the biomass-based carbonized carrier), then adding nitric acid accounting for 3% of the total volume of the reaction system solution (the copper nitrate solution and the nitric acid), uniformly mixing, and performing hydrothermal treatment at 160 ℃ for 10 hours to obtain a biomass-based catalyst precursor;
(4) placing the biomass-based catalyst precursor in a tubular furnace, and roasting for 3 hours at 250 ℃ in a nitrogen atmosphere to obtain a coral stacked biomass-based catalyst;
the coral stacked biomass-based catalyst prepared by the method is used for treating sulfur-containing tail gas, and CS in the sulfur-containing gas 2 The concentration is 100ppm, nitrogen is taken as carrier gas, the gas contains 1 percent of oxygen, the prepared catalyst is placed in a fixed bed reactor, and the space velocity is 5000 h -1 The reaction temperature is 90 ℃; set outlet CS 2 The breakthrough was observed when the concentration reached 10ppm, and it can be seen from FIG. 5 that the breakthrough time of the catalyst was maintained for 240 min.
Example 3: the preparation method of the coral stacked biomass charcoal-based catalyst comprises the following steps:
(1) taking tobacco stems as biomass raw materials, and carbonizing for 3h at 600 ℃ in a nitrogen atmosphere to obtain carbonized materials;
(2) grinding the carbide to 40-60 meshes, washing with water for 3 times, and drying in an electric furnace at 110 ℃ for 12 hours to obtain a biomass-based carbonized carrier;
(3) adding the biomass-based carbonized carrier into a reaction kettle containing a copper nitrate solution (the mass of copper nitrate in the copper nitrate solution is 100 percent of the mass of the biomass-based carbonized carrier), then adding nitric acid accounting for 2 percent of the total volume of the solution of a reaction system (the copper nitrate solution and the nitric acid), uniformly mixing, and then carrying out hydrothermal treatment at 140 ℃ for 12 hours to prepare a biomass-based catalyst precursor;
(4) placing the biomass-based catalyst precursor in a tubular furnace, and roasting for 3 hours at 290 ℃ in a nitrogen atmosphere to obtain a coral stacked biomass-based catalyst;
the coral stacked biomass-based catalyst prepared by the method is used for treating sulfur-containing tail gas, and H in the sulfur-containing gas 2 The concentration of S is 1000ppm, nitrogen is used as carrier gas, the gas contains 1% of oxygen, the prepared catalyst is placed in a fixed bed reactor, and the space velocity is 20000 h -1 The reaction temperature is 90 ℃; set the outlet H 2 The breakthrough was observed when the S concentration reached 10ppm, and as can be seen from FIG. 6, the breakthrough time of the catalyst was maintained for 390 min.
Example 4: the preparation method of the coral stacked biomass charcoal-based catalyst comprises the following steps:
(1) taking walnut shells as a biomass raw material, and carbonizing the walnut shells for 1h at 900 ℃ in a nitrogen atmosphere to obtain a carbide;
(2) grinding the carbide to 40-60 meshes, washing the carbide with water for 3 times, and drying the washed carbide in an electric furnace at 105 ℃ for 12 hours to obtain a biomass-based carbonized carrier;
(3) adding a biomass-based carbonized carrier into a reaction kettle containing a copper nitrate solution (the mass of copper nitrate in the copper nitrate solution is 80 percent of the mass of the biomass-based carbonized carrier), then adding nitric acid accounting for 4 percent of the total volume of the reaction system solution (the copper nitrate solution and the nitric acid), uniformly mixing, and performing hydrothermal treatment at 150 ℃ for 11 hours to obtain a biomass-based catalyst precursor;
(4) placing the biomass-based catalyst precursor in a tubular furnace, and roasting for 2h at 270 ℃ in a nitrogen atmosphere to obtain a coral stacked biomass-based catalyst;
the coral stacked biomass-based catalyst prepared by the method is used for treating sulfur-containing tail gas, wherein the concentration of COS in the sulfur-containing gas is 300ppm, and CS is 2 The concentration is 50ppm, H 2 The concentration of S is 300ppm, nitrogen is taken as carrier gas, oxygen is not contained in the gas, the prepared catalyst is placed in a fixed bed reactor, and the space velocity is 20000 h -1 The reaction temperature is 90 ℃; as can be seen from FIG. 7, the catalyst can maintain the removal effect of 100% for COS for 120min, and can also maintain the removal effect of CS for 2 Can maintain 100% of removal effect for H in 60min 2 S can keep 100 percent of removal effect for 180 min.
Example 5: the preparation method of the coral stacked biomass charcoal-based catalyst comprises the following steps:
(1) taking peanut shells as a biomass raw material, and carbonizing for 4 hours at 550 ℃ in a nitrogen atmosphere to obtain a carbide;
(2) grinding the carbide to 40-60 meshes, washing the carbide with water for 3 times, and drying the washed carbide in an electric furnace at 105 ℃ for 12 hours to obtain a biomass-based carbonized carrier;
(3) adding a biomass-based carbonized carrier into a reaction kettle containing a copper nitrate solution (the mass of copper nitrate in the copper nitrate solution is 70 percent of the mass of the biomass-based carbonized carrier), then adding nitric acid accounting for 3 percent of the total volume of the reaction system solution (the copper nitrate solution and the nitric acid), uniformly mixing, and performing hydrothermal treatment at 170 ℃ for 9 hours to obtain a biomass-based catalyst precursor;
(4) placing the biomass-based catalyst precursor in a tubular furnace, and roasting for 3 hours at 300 ℃ in a nitrogen atmosphere to obtain a coral stacked biomass-based catalyst;
the coral stacked biomass-based catalyst prepared by the method is used for treating sulfur-containing tail gas and SO in the sulfur-containing gas 2 The concentration is 1000ppm, nitrogen is used as carrier gas, the gas contains 10% of oxygen, the prepared catalyst is placed in a fixed bed reactor, and the space velocity is 20000 h -1 The reaction temperature is 90 ℃; set outlet SO 2 When the concentration reached 2ppm, breakthrough was observed, and as can be seen from FIG. 8, the catalyst breakthrough time was maintained at 510 min.
Example 6: the preparation method of the coral stacked biomass charcoal-based catalyst comprises the following steps:
(1) taking walnut shells as a biomass raw material, and carbonizing the walnut shells for 3 hours at 700 ℃ in a nitrogen atmosphere to obtain a carbide;
(2) grinding the carbide to 40-60 meshes, washing the carbide with water for 3 times, and drying the washed carbide in an electric furnace at 105 ℃ for 12 hours to obtain a biomass-based carbonized carrier;
(3) adding a biomass-based carbonized carrier into a reaction kettle containing a ferric nitrate solution (the mass of ferric nitrate in the ferric nitrate solution is 80% of the mass of the biomass-based carbonized carrier), then adding nitric acid accounting for 3% of the total volume of the reaction system solution (the ferric nitrate solution and the nitric acid), uniformly mixing, and performing hydrothermal treatment at 150 ℃ for 11 hours to obtain a biomass-based catalyst precursor;
(4) placing the biomass-based catalyst precursor in a tubular furnace, and roasting for 2 hours at 350 ℃ in a nitrogen atmosphere to obtain a coral stacked biomass-based catalyst;
the coral stacked biomass-based catalyst prepared by the method is used for treating sulfur-containing tail gas, the concentration of COS in the sulfur-containing gas is 600ppm, nitrogen is used as carrier gas, the gas contains 0.5% of oxygen, the prepared catalyst is placed in a fixed bed reactor, and the space velocity is 20000 h -1 The reaction temperature is 90 ℃; the breakthrough was set when the outlet COS concentration reached 10ppm, and the catalyst breakthrough time was maintained for 150min, as can be seen from FIG. 9.

Claims (4)

1. A preparation method of a coral stacked biomass charcoal-based catalyst is characterized by comprising the following steps: the method comprises the following steps:
(1) cleaning and crushing a biomass raw material, and roasting at 500-900 ℃ for 1-4 h under the protection of inert gas;
(2) grinding the carbonized product obtained in the step (1) to 40-60 meshes, washing with water to remove impurities on the surface of the carbonized material, and drying at 100-110 ℃ for 10-12 h to obtain a biomass carbon-based carrier;
(3) putting the biomass charcoal-based carrier, the nitrate solution and the nitric acid in the step (2) into a reaction kettle for mixing, and then carrying out hydrothermal reaction to prepare a biomass-based catalyst precursor; the addition amount of the nitrate is 50-180% of the mass of the biomass carbon-based carrier, and the addition amount of the nitric acid is 1-5% of the total volume of the reaction system solution; the nitrate is cupric nitrate;
(4) roasting the biomass-based catalyst precursor obtained in the step (3) for 2-4 hours at 200-350 ℃ in an inert atmosphere to obtain a coral stacked biomass-based catalyst;
the hydrothermal reaction temperature is 140-180 ℃, and the hydrothermal reaction time is 8-12 h.
2. The method for preparing the coral stacked biomass charcoal-based catalyst as claimed in claim 1, wherein: the biomass raw material is one of straw, tobacco stem, walnut shell, peanut shell and bamboo.
3. The method for preparing the coral stacked biomass charcoal-based catalyst as claimed in claim 1, wherein: and (4) the inert atmosphere in the step (4) is nitrogen atmosphere.
4. The application of the coral stacked biomass charcoal-based catalyst prepared by the preparation method of the coral stacked biomass charcoal-based catalyst in deep purification of sulfur-containing tail gas as claimed in any one of claims 1 to 3.
CN202110715066.9A 2021-06-26 2021-06-26 Preparation method and application of coral stacked biomass charcoal-based catalyst Active CN113385173B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110715066.9A CN113385173B (en) 2021-06-26 2021-06-26 Preparation method and application of coral stacked biomass charcoal-based catalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110715066.9A CN113385173B (en) 2021-06-26 2021-06-26 Preparation method and application of coral stacked biomass charcoal-based catalyst

Publications (2)

Publication Number Publication Date
CN113385173A CN113385173A (en) 2021-09-14
CN113385173B true CN113385173B (en) 2022-09-06

Family

ID=77624022

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110715066.9A Active CN113385173B (en) 2021-06-26 2021-06-26 Preparation method and application of coral stacked biomass charcoal-based catalyst

Country Status (1)

Country Link
CN (1) CN113385173B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114950360A (en) * 2022-04-24 2022-08-30 江汉大学 Biomass activated carbon adsorption material derived from lotus leaves and preparation method and application thereof
CN116943656A (en) * 2023-09-21 2023-10-27 广东以色列理工学院 Modified biomass carbon catalyst, preparation method and method for catalyzing biomass pyrolysis

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0804572D0 (en) * 2008-03-12 2008-04-16 Johnson Matthey Plc Preparation of desulphurisation materials
CN106669672B (en) * 2016-12-27 2020-01-03 环境保护部华南环境科学研究所 Activated carbon catalyst for sulfur dioxide recovery and preparation method thereof
CN108393076B (en) * 2018-03-20 2021-06-11 扬州大学 Copper-containing adsorbent, preparation method and application thereof in adsorption of tetracycline in water
CN110237818B (en) * 2019-06-14 2022-07-22 上海工程技术大学 Preparation method and application of nitrogen and sulfur co-doped biochar
CN112371084A (en) * 2020-10-20 2021-02-19 广西南宁都宁通风防护设备有限公司 Preparation method and application of sterilized activated carbon
CN112774631B (en) * 2021-01-11 2023-06-30 内蒙古牧星人新材料科技有限公司 Method for preparing biochar-based composite adsorption material from aquatic product processing waste and application of biochar-based composite adsorption material in antimony-containing wastewater treatment

Also Published As

Publication number Publication date
CN113385173A (en) 2021-09-14

Similar Documents

Publication Publication Date Title
CN113385173B (en) Preparation method and application of coral stacked biomass charcoal-based catalyst
CN110935280B (en) Nitrogen-doped mesoporous bamboo-based biochar and application thereof
CN102423688B (en) Preparation method for walnut shell active carbon adsorbent for purifying low concentration phosphine
CN110508274B (en) Modified biochar low-temperature denitration catalyst and application thereof
CN104772146A (en) Preparation method of modified bio-charcoal based catalyst
CN104772143B (en) For the preparation method for the support type sludge base catalyst for removing low concentration carbon disulfide
CN110075904B (en) Carbon-nitrogen catalyst for selectively oxidizing hydrogen sulfide gas and preparation method thereof
CN110026228B (en) Preparation of nitrogen-containing porous carbon material and H thereof2S-selective catalytic oxidation applications
CN107282068B (en) Copper oxide pillared layered manganese oxide catalyst and preparation method and application thereof
CN101804344A (en) Manganese/carbon nanotube denitrification catalytic reduction catalyst and preparation method thereof
CN107814385B (en) Method for treating industrial wastewater and preparing graphite type porous carbon material by using biomass coke
CN104190358B (en) NOx adsorber
CN101723364B (en) Method for preparing activated carbon by using plasmas to crack solid coal product
CN110683540A (en) Nitrogen-rich hierarchical pore biomass charcoal and application thereof
CN104841441A (en) Preparation method and application of catalyst for purifying HCN through hydrolysis-oxidation coupling technology
CN112452298A (en) Magnetic biochar composite material and preparation method and application thereof
CN110711584B (en) Semicoke-loaded coke oil steam reforming catalyst and preparation method and application thereof
CN110801844B (en) Method for preparing demercuration catalyst by using waste anode material and application of demercuration catalyst
CN112090397A (en) Method for improving heat value of blast furnace tail gas by using biochar and obtaining carbon with high specific surface area
CN109626486B (en) Method for coupling treatment of high-concentration organic wastewater and heavy metal wastewater
CN103551182A (en) Catalyst for splitting decomposition of biomass tar and preparation method thereof
CN113813966B (en) Biomass charcoal-based functional material for catalytic oxidation of formaldehyde and preparation method and application thereof
CN115779905A (en) Iron oxide biochar taking blue-green algae in Taihu lake as raw material, preparation method thereof and application thereof in water treatment
CN107754782B (en) Self-supporting VO2Preparation method and product of Fenton-like catalytic material
CN115092925A (en) Preparation method and application of nitrogen-sulfur co-doped carbon material with high nitrogen-sulfur content and developed micropores

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant