Hierarchical pore activated carbon and preparation method and application thereof

Abstract

The application provides a hierarchical pore amorphous activated coke and a preparation method and application thereof, the preparation method of the amorphous activated coke comprises the following steps: S1, metamorphic coal is crushed and sieved, and then dried to obtain amorphous coal powder; S2, part of the amorphous coal powder is activated by using an activating agent to obtain microporous amorphous activated coke; and S3, part of the amorphous coal powder obtained in the step S1 is mixed with the microporous amorphous activated coke obtained in the step S2, and carbonization treatment is performed to obtain the amorphous activated coke. The preparation method is simple and reliable, and low in cost, and the prepared amorphous activated coke not only has high mechanical strength and improves the service life of the amorphous activated coke, but also has rich pore structures, and has micropore structures and mesopore and macropore structures, so that efficient desulfurization and denitrification can be realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of activated coke preparation, and particularly relates to a hierarchical pore amorphous activated coke as well as a preparation method and application thereof. BACKGROUND

[0002] The activated coke with coal as raw material is widely available and low in cost, has an easily adjustable point-microporous-pore multi-scale structure, and can realize the combined adsorption and catalytic removal of SO2, NO X and other multi-pollutants, and is one of the best choices of the existing desulfurization and denitrification catalysts. Meanwhile, for coal-fired power plants, coal is both fuel and catalyst raw material, and the development of a coal-based activated coke desulfurization and denitrification process can realize the synergistic integration of power production and flue gas purification processes.

[0003] At present, the activated coke used for flue gas desulfurization and denitrification is mainly columnar activated coke with a size of 5-9 mm, which is mainly prepared by adding an appropriate amount of binder and then columnar molding, and the preparation process is relatively complex, and the added binder and compaction molding can reduce the diffusivity and reactivity of the activation medium in the activation process, resulting in low specific surface area and pore volume of the prepared activated coke, and the pore structure is generally microporous. Although the amorphous activated coke prepared by using crushed raw coal as raw material does not undergo a complex molding process and has a relatively simple preparation process, the amorphous activated coke does not add a binder during preparation, which can result in the inability of the activated coke particles to form a carbon film bonding bridge between the particles, and thus the mechanical strength of the activated coke is weak. On the other hand, the developed pore structure of the activated agent can also result in a loose activated coke carbon skeleton, and thus the mechanical strength of the activated coke is deteriorated, and therefore, the mechanical strength of the activated coke needs to be further optimized. SUMMARY

[0004] The present application is mainly based on the following problems and findings:

[0005] The coke is used for blast furnace ironmaking and steelmaking, and is regarded as a milestone event in the history of metallurgy. The coke is a heat source, a reducing agent, and a framework supporting the materials in the furnace during the steelmaking process, and has the strength to withstand the scouring of molten iron and slag iron. Therefore, the coke has chemical reactivity, specific surface area and structural strength. Most of the coking coal is medium metamorphic coal, which undergoes softening, melting, flowing and expansion in the temperature range of 300-600 DEG C, and then solidifies to form semi-coke. The process of semi-coke changing into coke occurs in the temperature range of 600-1000 DEG C, mainly by thermal polycondensation reaction, the aromatic nucleus increases, the arrangement is regularized, and the structure tends to be dense. Therefore, in the concept of coal and active coke composite carbonization technology, the coke formed by carbonization of coal in the composite structure of coal coke has high structural strength and can be used as a structural unit of amorphous active coke to enhance the mechanical strength of amorphous active coke, improve the service life of desulfurization and denitrification active coke, and reduce the operating cost of frequent catalyst replacement; the microporous active coke in the composite structure of coal coke has a developed pore structure and can be used as a functional unit of the final amorphous active coke to provide a place for the adsorption and reaction of reactant molecules; the gap between the coke and the microporous active coke forms a mesopore structure to provide a channel for the rapid diffusion and transport of reactant and product molecules. Therefore, the method based on the composite carbonization of coal and active coke can solve the problem of low mechanical strength of amorphous active coke, and form hierarchical pore amorphous active coke with micropores and mesopores, which can ensure the high efficiency of the desulfurization and denitrification process.

[0006] Therefore, the present application aims to at least solve one of the problems in the related art to some extent. To this end, the present application embodiment proposes a hierarchical pore amorphous active coke, a preparation method and application thereof, to improve the mechanical strength of the active coke.

[0007] In a first aspect, the present application embodiment proposes a preparation method of amorphous active coke, comprising the following steps:

[0008] S1, crushing and screening the metamorphic coal, and then drying to obtain amorphous coal powder;

[0009] S2, activating part of the amorphous coal powder by using an activating agent to obtain microporous amorphous active coke;

[0010] S3, mixing part of the amorphous coal powder obtained in step S1 with the microporous amorphous active coke obtained in step S2, and then carbonizing to obtain the amorphous active coke.

[0011] In the embodiment of the present application, the amorphous coal powder is compounded with the microporous amorphous active coke, on the one hand, after carbonization treatment, the amorphous coal powder is carbonized to form coke with high structural strength, which can be used as a structural unit of the amorphous active coke to enhance the mechanical strength of the amorphous active coke; on the other hand, the microporous amorphous active coke has a developed pore structure, which can be used as a functional unit of the amorphous active coke to provide a place for the adsorption and reaction of reactant molecules; and the gap between the coke and the microporous amorphous active coke forms a mesopore structure to provide a channel for the rapid diffusion and transport of reactant and product molecules, so that a high-efficiency desulfurization and denitrification process can be realized; and the preparation method has simple process, easy operation, low price of raw materials, simple equipment and low cost.

[0012] In some embodiments, the step S2 further comprises, before the activation treatment, performing carbonization treatment on the amorphous coal powder; the carbonization treatment is performed at a temperature of 500-700 DEG C for 0.5-3 h.

[0013] In some embodiments, in the step S1, the size of the crushed and screened coal powder is 1-10 mm, preferably 0.1-1 mm.

[0014] And / or, the drying treatment is performed at a temperature of 60-150 DEG C for 6-24 h.

[0015] In some embodiments, in the step S2, the activation treatment comprises at least one of physical activation, chemical activation and physical-chemical activation.

[0016] And / or, the activation agent comprises a gaseous activation agent and / or a solid activation agent, the gaseous activation agent comprises at least one of CO2, H2O and NH3, and the solid activation agent comprises at least one of KOH, ZnCl2 and H3PO4.

[0017] In some embodiments, in the step S2, the activation treatment is performed at a temperature increasing rate of 5-20 DEG C / min, an activation temperature of 600-1000 DEG C and an activation time of 0.5-4 h.

[0018] And / or, the carrier gas of the activation agent comprises at least one of nitrogen, argon and helium.

[0019] And / or, the volume flow ratio of the activation agent to the carrier gas is 1:0.5-1:15, preferably 1:0.5-1:5.

[0020] In some embodiments, in the step S2, the activation treatment further comprises adding an alkali metal catalyst and / or an alkaline earth metal catalyst.

[0021] Further, the alkali metal catalyst comprises at least one of K2CO3, KCl, Na2CO3 and NaCl; and the alkaline earth metal catalyst comprises at least one of CaSO4, CaCO3, CaCl2 and MgCl2.

[0022] In some embodiments, the carbonization treatment in the steps S2 and / or S3 is carried out under the protection of an inert atmosphere, and the inert atmosphere comprises at least one of nitrogen, argon and helium.

[0023] In some embodiments, in the step S3, the mass ratio of the part of the unformed coal powder to the microporous unformed active coke is 1:0.2-1:10.

[0024] Further, the carbonization treatment is carried out at a temperature of 300-1000°C, preferably 800-1000°C, and for a time of 1-4h.

[0025] In some embodiments, in the step S3, the mixing is carried out by at least one of grinding, mechanical ball milling and liquid phase stirring.

[0026] In some embodiments, in the step S1, the metamorphic coal is a medium metamorphic coal, and the medium metamorphic coal comprises at least one of coking coal, fat coal and bituminous coal.

[0027] In the second aspect, the embodiments of the present application provide an unformed active coke prepared by the method.

[0028] The features and advantages described above for the method for preparing the unformed active coke also apply to the unformed active coke, and will not be repeated here.

[0029] In the third aspect, the embodiments of the present application provide an application of the unformed active coke in the field of desulfurization and denitrification, i.e., using the unformed active coke as a desulfurization and denitrification catalyst. Since the unformed active coke has high mechanical strength, it has a long service life when used as a desulfurization and denitrification catalyst, thereby reducing the operating cost of frequent catalyst replacement.

[0030] The present application has the following advantages and benefits:

[0031] (1) The unformed active coke in the present application not only has high mechanical strength, but also has a long service life. In addition, the unformed active coke has abundant pore structures, including microporous structures and mesoporous and macroporous structures, and can realize efficient desulfurization and denitrification.

[0032] (2) The raw materials in the present application are widely available and low in price, the preparation process is simple and easy to operate, the equipment used is simple, the production cost is low, and the application is wide. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the described embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0034] Unless otherwise defined, the technical terms or scientific terms used in the present application shall have the meanings commonly understood by a person of ordinary skill in the art to which the present application belongs.

[0035] In this document, the term "and / or" is merely a description of the associated relationship of associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of existence of A alone, existence of A and B simultaneously, and existence of B alone.

[0036] In this document, in the case of describing a value as a range, it should be understood that this disclosure includes the disclosure of all possible sub-ranges within the range, and the specific numerical values falling within the range, regardless of whether the specific numerical values or specific sub-ranges are explicitly indicated.

[0037] In a first aspect, the embodiments of the present application provide a preparation method of irregular active coke, comprising the following steps:

[0038] S1, after crushing and screening the metamorphic coal, drying treatment is performed to obtain irregular coal powder;

[0039] S2, using an activating agent to activate part of the irregular coal powder to obtain microporous irregular active coke;

[0040] S3, mixing part of the irregular coal powder obtained in step S1 with the microporous irregular active coke obtained in step S2, and performing carbonization treatment to obtain irregular active coke.

[0041] In the embodiment of the present application, the coal powder is first activated to obtain microporous amorphous activated coke, and then the microporous amorphous activated coke is compounded with the amorphous coal powder to obtain amorphous activated coke by carbonization treatment. On the one hand, the microporous amorphous activated coke has a developed pore structure, which can be used as a functional unit of the amorphous activated coke to provide a place for the adsorption and reaction of reactant molecules; on the other hand, the amorphous coal powder forms coke with high structural strength after carbonization, which can be used as a structural unit of the amorphous activated coke to enhance the mechanical strength of the amorphous activated coke, and when used as a desulfurization and denitrification catalyst, the amorphous activated coke has a long service life, thereby reducing the operating cost of frequent catalyst replacement; in addition, the space between the microporous amorphous activated coke and the coke forms a mesopore and macropore structure to provide a channel for the rapid diffusion and transport of reactant and product molecules, thereby realizing a high-efficiency desulfurization and denitrification process.

[0042] In some specific embodiments, in step S2, the amorphous coal powder is first subjected to carbonization treatment before the activation treatment; the carbonization treatment temperature is 500-700 DEG C, for example, 500 DEG C, 550 DEG C, 600 DEG C, 680 DEG C, 700 DEG C, etc.; the carbonization time is 0.5-3h, for example, 0.5h, 1h, 2h, 2.5h, 3h, etc. The amorphous coal powder is first subjected to carbonization treatment before the activation treatment, which can provide an initial pore structure for subsequent activation, is conducive to the diffusion and mass transfer of activation gas in the activation process, and accelerates the activation process; on the other hand, the carbonization before the activation can improve the mechanical strength of the activated coke to a certain extent.

[0043] In some specific embodiments, in step S1, the size of the crushed and sieved coal powder is 1-10mm, for example, 1-10mm, 10-500-1mm, 0.1-1mm, 0.1mm, 0.2mm, 0.5mm, 0.8mm, 1mm, etc.

[0044] In some specific embodiments, in step S1, the size of the crushed and sieved coal powder is 1-10mm, for example, 1-10mm, 10-500-1mm, 0.1-1mm, 0.1mm, 0.2mm, 0.5mm, 0.8mm, 1mm, etc.

[0045] In some specific embodiments, in step S2, the activation treatment includes at least one of physical activation, chemical activation, and physical-chemical activation.

[0046] And / or, the activating agent comprises a gaseous activating agent and / or a solid activating agent; wherein the gaseous activating agent comprises at least one of CO2, H2O, NH3; the solid activating agent comprises at least one of KOH, ZnCl2, H3PO4. By selecting the above-mentioned activating agent, the etching or intercalation pore-forming of the unformed coal powder can be realized.

[0047] In some specific embodiments, in step S2, the heating rate of the activation treatment is 5-20℃ / min, for example, 5℃ / min, 8℃ / min, 10℃ / min, 15℃ / min, 20℃ / min, etc.; the activation temperature is 600-1000℃, for example, 600℃, 750℃, 800℃, 820℃, 900℃, 1000℃, etc.; the activation time is 0.5-4h, for example, 0.5h, 1h, 2h, 3.5h, 4h, etc.

[0048] And / or, the carrier gas of the activating agent comprises at least one of nitrogen, argon, helium;

[0049] And / or, the volume flow ratio of the activating agent to the carrier gas is 1:0.5-1:15, for example, 1:0.5, 1:2, 1:5, 1:8, 1:10, 1:12, 1:15, etc.; further, preferably 1:0.5-1:5, for example, 1:0.5, 1:1, 1:2, 1:3.5, 1:4, 1:5, etc.

[0050] In some specific embodiments, in step S2, the activation treatment further comprises adding an alkali metal catalyst and / or an alkaline earth metal catalyst. By adding the alkali metal catalyst and / or the alkaline earth metal catalyst, the activation energy of the activation reaction can be reduced, the etching pore-forming rate can be accelerated, and the development of the pore structure is beneficial.

[0051] Further, the alkali metal catalyst comprises at least one of K2CO3, KCl, Na2CO3, NaCl; the alkaline earth metal catalyst comprises at least one of CaSO4, CaCO3, CaCl2, MgCl2.

[0052] In some specific embodiments, in steps S2 and / or S3, the carbonization treatment is carried out under the protection of an inert atmosphere, and the inert protective atmosphere comprises at least one of nitrogen, argon, helium.

[0053] In some specific embodiments, in step S3, the mass ratio of the part of the unformed coal powder to the microporous unformed active coke is 1:0.2-1:10, for example, 1:0.2, 1:1, 1:3, 1:5, 1:8, 1:10, etc.

[0054] And / or, the temperature of the carbonization treatment is 300-1000℃, non-limiting examples of which include 300℃, 500℃, 640℃, 750℃, 800℃, 820℃, 900℃, 1000℃, etc.; preferably, the temperature of the carbonization treatment is 800-1000℃, non-limiting examples of which include 800℃, 820℃, 900℃, 950℃, 1000℃, etc.; the carbonization time is 1-4h, non-limiting examples of which include 1h, 2h, 3h, 3.5h, 4h, etc.

[0055] In some specific embodiments, in step S3, the mixing method includes at least one of grinding mixing, mechanical ball milling mixing, and liquid phase stirring mixing.

[0056] In some specific embodiments, in step S1, the metamorphic coal is a medium metamorphic degree coal; further, the medium metamorphic degree coal includes at least one of coking coal, fat coal, and bituminous coal.

[0057] In a second aspect, an embodiment of the present application provides an amorphous activated coke, which is prepared by the method described above.

[0058] The amorphous activated coke in the embodiment of the present application not only has high mechanical strength, but also improves the service life of the amorphous activated coke; and the amorphous activated coke has rich pore structure, and has both micropore structure and mesopore-macropore structure, wherein the micropore limited space is used as a place for adsorption and reaction of reactant molecules at active sites, and the mesopore-macropore is used as a place for rapid diffusion of reactant molecules to active sites and rapid release and storage of reaction products, so that high-efficiency desulfurization and denitrification can be achieved.

[0059] In a third aspect, an embodiment of the present application provides application of the amorphous activated coke described above in the field of desulfurization and denitrification, and the amorphous activated coke is used as a desulfurization and denitrification catalyst. Since the amorphous activated coke has high mechanical strength, when the amorphous activated coke is used as a desulfurization and denitrification catalyst, the service life of the amorphous activated coke is long, so that the operation cost of frequent replacement of the catalyst can be reduced, and high-efficiency desulfurization and denitrification can be achieved.

[0060] The technical solutions of the present application will be further described in detail below with reference to specific embodiments. In the following examples, conventional instruments and equipment in the field are used, and the experimental methods not specified in the examples are conventional methods and conventional conditions in the field, or are methods and conditions recommended by manufacturers. Unless otherwise specified, the various raw materials used in the following examples are conventional commercially available products, or can be prepared by known methods.

[0061] Example 1

[0062] The embodiment provides a preparation method of amorphous activated coke, which includes the following steps:

[0063] S1, taking bituminous coal as raw material, crushing and screening to obtain coal powder with a size of 0.5-1 mm, and drying the coal powder at 80℃ for 12 h to obtain amorphous coal powder;

[0064] S2, taking CO2 with a concentration of 40% as activating agent, nitrogen as carrier gas of CO2, and the volume flow ratio of CO2 to carrier gas being 1:0.5, and adding K2CO3 alkali catalyst, activating part of the amorphous coal powder at 600℃ (wherein the mass ratio of K2CO3 to part of the amorphous coal powder is 1:100), and obtaining microporous amorphous active coke after 1 h of activation;

[0065] S3, grinding and mixing part of the amorphous coal powder obtained in step S1 with the microporous amorphous active coke obtained in step S2 according to a mass ratio of 1:1, then transferring the mixture to a tube furnace, carbonizing the mixture at 900℃ under nitrogen atmosphere protection with a temperature rising rate of 5℃ / min, and obtaining amorphous active coke after 2 h of carbonization and cooling.

[0066] Example 2

[0067] The embodiment provides a preparation method of amorphous active coke, comprising the following steps:

[0068] S1, taking bituminous coal as raw material, crushing and screening to obtain coal powder with a size of 0.15-0.2 mm, and drying the coal powder at 120℃ for 10 h to obtain amorphous coal powder;

[0069] S2, taking KOH as activating agent, argon as carrier gas of KOH, and the volume flow ratio of KOH to carrier gas being 1:2, activating part of the amorphous coal powder at 900℃ (wherein the mass ratio of KOH to part of the amorphous coal powder is 3:1), and obtaining microporous amorphous active coke after 1 h of activation;

[0070] S3, grinding and mixing part of the amorphous coal powder obtained in step S1 with the microporous amorphous active coke obtained in step S2 according to a mass ratio of 1:2, then transferring the mixture to a tube furnace, carbonizing the mixture at 800℃ under argon atmosphere protection with a temperature rising rate of 10℃ / min, and obtaining amorphous active coke after 1 h of carbonization and cooling.

[0071] Example 3

[0072] The embodiment provides a preparation method of amorphous active coke, comprising the following steps:

[0073] S1, taking bituminous coal as raw material, crushing and screening to obtain coal powder with a size of 0.25-0.5 mm, and drying the coal powder at 150℃ for 6 h to obtain amorphous coal powder;

[0074] S2, part of the amorphous coal powder is placed in a tube furnace and heated to 500℃ at a heating rate of 10℃ / min under the protection of nitrogen atmosphere for carbonization treatment for 1h; then H2O is used as the activating agent and nitrogen is used as the carrier gas of H2O, and the volume flow ratio of H2O to the carrier gas is 1:0.5, and the amorphous coal powder after the first carbonization is activated at 800℃ for 1h to obtain microporous amorphous activated coke;

[0075] S3, part of the amorphous coal powder obtained in step S1 is mechanically ball-milled with the microporous amorphous activated coke obtained in step S2 at a mass ratio of 1:3, and then the mixture is transferred to a tube furnace and heated to 1000℃ at a heating rate of 10℃ / min under the protection of nitrogen atmosphere for secondary carbonization treatment for 0.5h, and then cooled to obtain amorphous activated coke.

[0076] Comparative Example 1

[0077] The present comparative example provides a preparation method of amorphous activated coke, comprising the following steps:

[0078] S1, taking bituminous coal as the raw material, crushing and sieving to obtain coal powder with a particle size of 0.5-1mm, and drying at 80℃ for 12h to obtain amorphous coal powder;

[0079] S2, taking CO2 with a concentration of 40% as the activating agent and nitrogen as the carrier gas of CO2, and the volume flow ratio of CO2 to the carrier gas is 1:0.5, and then the amorphous coal powder is activated at 900℃ for 1h to obtain amorphous activated coke.

[0080] Comparative Example 2

[0081] The present comparative example provides a preparation method of amorphous activated coke, comprising the following steps:

[0082] S1, taking bituminous coal as the raw material, crushing and sieving to obtain coal powder with a particle size of 0.5-1mm, and drying at 80℃ for 12h to obtain amorphous coal powder;

[0083] S2, placing the amorphous coal powder in a tube furnace and heating to 500℃ at a heating rate of 10℃ / min under the protection of nitrogen atmosphere for carbonization treatment for 1h; then taking CO2 as the activating agent and nitrogen as the carrier gas of CO2, and the volume flow ratio of CO2 to the carrier gas is 1:0.5, and the amorphous coal powder after carbonization is activated at 900℃ for 1h to obtain amorphous activated coke.

[0084] The amorphous activated coke obtained in Examples 1-3 and the amorphous activated coke obtained in Comparative Examples 1-2 are subjected to mechanical strength test and desulfurization and denitrification test, and the test results are shown in Table 1.

[0085] The mechanical strength test: the mechanical strength of the irregular active coke is tested by using a wear resistance strength tester; the wear resistance strength tester is operated at a speed of 50 r / min for 5 min of wear test, and the mechanical strength of the irregular active coke is determined according to the mass proportion of the irregular active coke maintaining the original particle size after the test.

[0086] The desulfurization and denitrification test: the irregular active agent is subjected to 3h of desulfurization and denitrification test by using a self-made fixed bed system; the fixed bed temperature is set at 160 DEG C. The desulfurization and denitrification process is carried out simultaneously, and the simulated flue gas components are: 400 ppm NO, 200 ppm SO2, 5% O2, and the rest is N2, and the total flow rate is 200 mL / min. The desulfurization efficiency and denitrification efficiency are obtained by measuring the concentrations of NO and SO2 before and after 3h of simulated flue gas desulfurization and denitrification, and the calculation formula is:

[0087] Desulfurization efficiency = (inlet SO2 concentration - outlet SO2 concentration) / inlet SO2 concentration * 100%;

[0088] Denitrification efficiency = (inlet NO concentration - outlet NO concentration) / inlet NO concentration * 100%.

[0089] Table 1

[0090]

[0091] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the different embodiments or examples described in the present specification and the features of the different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0092] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A method for producing an amorphous activated coke, characterized by, The method comprises the following steps: S1, drying the coal after crushing and screening to obtain irregular coal powder; S2, activating part of the irregular coal powder with an activating agent to obtain microporous irregular activated coke; wherein the carrier gas of the activating agent comprises at least one of nitrogen, argon and helium, and the volume flow ratio of the activating agent to the carrier gas of the activating agent is 1:0.5-1:15; S3, mixing part of the irregular coal powder obtained in step S1 with the microporous irregular activated coke obtained in step S2 and performing carbonization treatment to obtain the irregular activated coke.

2. The method for preparing the amorphous activated coke according to claim 1, characterized by, In step S1, the size of the coal powder after crushing and screening is 1-10 mm; And / or, the drying temperature is 60-150 DEG C, and the drying time is 6-24 h.

3. The method of preparing the amorphous activated coke according to claim 1, characterized in that, In step S2, the irregular coal powder is first subjected to carbonization treatment before the activation treatment; the carbonization temperature is 500-700 DEG C, and the carbonization time is 0.5-3 h.

4. The method of preparing amorphous activated coke according to claim 1, characterized in that, In step S2, the activation treatment includes at least one of physical activation, chemical activation and physical-chemical activation; And / or, the activating agent includes a gaseous activating agent and / or a solid activating agent, the gaseous activating agent includes at least one of CO2, H2O and NH3, and the solid activating agent includes at least one of KOH, ZnCl2 and H3PO4.

5. The method of preparing an amorphous activated coke according to claim 4, characterized in that, In step S2, the activation temperature is 600-1000 DEG C, and the activation time is 0.5-4 h.

6. The method of preparing amorphous activated coke according to claim 1, characterized in that, In step S2, the activation treatment further includes adding an alkali metal catalyst and / or an alkaline earth metal catalyst.

7. The method of preparing amorphous activated coke according to claim 1, characterized by, In step S3, the mass ratio of the part of the irregular coal powder to the microporous irregular activated coke is 1:0.2-1:10; And / or, the carbonization temperature is 300-1000 DEG C, and the carbonization time is 1-4 h.

8. The method of preparing amorphous activated coke according to claim 1, characterized in that, In step S1, the metamorphic coal is a medium metamorphic degree coal, and the medium metamorphic degree coal includes at least one of coking coal, fat coal and bituminous coal.

9. A non-shape active coke characterized in that, The irregular activated coke is prepared by the method of any one of claims 1-8.

10. Use of the amorphous activated coke according to claim 9 in the field of desulfurization and denitrification, characterized in that, The irregular activated coke is used as a desulfurization and denitrification catalyst.

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