Preparation method and system for improving specific surface area and activity during calcium hydroxide processing

Abstract

The invention relates to the technical field of solid-liquid reaction, in particular to a preparation method and system for improving specific surface area and activity during calcium hydroxide processing, and the preparation method comprises the following steps: pyrolyzing a treated carbon-containing raw material to obtain pyrolysis gas, constructing a selective permeable membrane of the pyrolysis gas, and removing impurities from the pyrolysis gas to obtain pure pyrolysis gas, the ratio of CO to H2 corresponding to the pure pyrolysis gas is adjusted, and target pyrolysis gas is obtained; determining a simulation optimization target of calcium oxide, analyzing thermodynamic properties of target pyrolysis gas, configuring initial process parameters of a parameter control module, and reacting the target pyrolysis gas, calcium oxide and a catalyst to obtain a calcium hydroxide simulation result; and analyzing the simulation loss of the calcium hydroxide simulation result relative to the simulation optimization target, optimizing the initial process parameters to obtain target process parameters, and carrying out a reaction by using the target pyrolysis gas, calcium oxide and a catalyst to obtain the target calcium hydroxide. The application performance of the processed calcium hydroxide can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid reaction, and in particular to a preparation method and a system for improving specific surface area and activity when processing calcium hydroxide. Background Art

[0002] Improving the specific surface area and activity when processing calcium hydroxide means taking a series of technical measures in the process of preparing calcium hydroxide to increase its surface area and improve its chemical activity. This is crucial to the application performance of calcium hydroxide, because the higher the specific surface area and activity, the larger the contact area between calcium hydroxide and the reactants in the chemical reaction, the faster the reaction rate, thereby improving its application effect.

[0003] At present, the processing of calcium hydroxide is mainly carried out through a pre-established process flow: raw material grinding, additive use and environmental control to increase the specific surface area and activity. Since different raw material properties and reaction environments have an impact on the reaction process, this method relies too much on empirical process parameters and operating conditions, lacks precise simulation and optimization, and cannot accurately control the production process parameters during the process, making it impossible to effectively achieve the improvement of the specific surface area and activity when processing calcium hydroxide, thereby reducing the application performance of the processed calcium hydroxide. Summary of the invention

[0004] The invention provides a preparation method and a system for improving specific surface area and activity when processing calcium hydroxide, and the main purpose of the method is to improve the application performance of the processed calcium hydroxide.

[0005] To achieve the above object, the present invention provides a preparation method for improving specific surface area and activity when processing calcium hydroxide, comprising:

[0006] Obtaining a carbon-containing raw material of calcium oxide, pre-treating the carbon-containing raw material to obtain a treated carbon-containing raw material, pyrolyzing the treated carbon-containing raw material to obtain a pyrolysis gas, wherein the pyrolysis gas includes CO and H2;

[0007] Constructing a selective permeable membrane for the pyrolysis gas, removing impurities from the pyrolysis gas based on the selective permeable membrane to obtain pure pyrolysis gas, and adjusting the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model to obtain target pyrolysis gas;

[0008] Determining a simulation optimization target of the calcium oxide, wherein the simulation optimization target includes increasing specific surface area and increasing activity, and constructing an Aspen Plus simulation environment of the calcium oxide and target pyrolysis gas based on the simulation optimization target;

[0009] Analyzing the thermodynamic properties of the target pyrolysis gas by using the PR state equation in the Aspen Plus simulation environment, determining the catalyst of the target pyrolysis gas and the calcium oxide, analyzing the catalyst properties of the catalyst, configuring the initial process parameters of the parameter control module corresponding to the Aspen Plus simulation environment based on the thermodynamic properties and the catalyst properties, and reacting the target pyrolysis gas, calcium oxide and the catalyst in a plug flow reactor corresponding to the Aspen Plus simulation environment based on the initial process parameters to obtain a calcium hydroxide simulation result;

[0010] The simulated loss of the calcium hydroxide simulation result is analyzed compared with the simulated optimization target. Based on the simulated loss, the initial process parameters are optimized to obtain target process parameters. Based on the target process parameters, the target pyrolysis gas, calcium oxide and catalyst are reacted to obtain the target calcium hydroxide.

[0011] Optionally, pyrolyzing the processed carbon-containing raw material to obtain pyrolysis gas comprises:

[0012] Constructing a low-temperature pyrolysis environment for processing the carbon-containing raw material, and configuring pyrolysis parameters of the low-temperature pyrolysis environment;

[0013] Based on the pyrolysis parameters, performing low-temperature pyrolysis on the processed carbon-containing raw material in the low-temperature pyrolysis environment to obtain low-temperature pyrolysis gas and residual carbon-containing raw material;

[0014] Constructing a preset electric field of a plasma generator, and based on the electric field, ionizing the gas in the plasma generator to obtain plasma;

[0015] By means of the plasma, a high-temperature pyrolysis environment for the remaining carbon-containing raw materials is constructed;

[0016] Based on the high-temperature pyrolysis environment, the remaining carbon-containing raw material is subjected to high-temperature pyrolysis to obtain high-temperature pyrolysis gas;

[0017] The low-temperature pyrolysis gas and the high-temperature pyrolysis gas are fused to obtain the pyrolysis gas.

[0018] Optionally, the construction of the selective permeable membrane for the pyrolysis gas comprises:

[0019] analyzing the composition properties of the pyrolysis gas;

[0020] determining a film-forming material of the pyrolysis gas based on the component properties;

[0021] constructing a polymer film of the pyrolysis gas based on the film-forming material;

[0022] Integrating a preset organic functional group into the film surface of the polymer film to obtain a functional polymer film;

[0023] Characterizing the functional polymer film to obtain a characterization result;

[0024] When the characterization result meets the preset standard characterization result, the functional polymer membrane is used as a selective permeable membrane for the pyrolysis gas.

[0025] Optionally, the adjusting the ratio of CO and H2 corresponding to the pure pyrolysis gas by a preset component ratio optimization model to obtain the target pyrolysis gas includes:

[0026] Determine the reaction equation of the pure pyrolysis gas and the pure pyrolysis gas corresponding to calcium oxide;

[0027] determining thermodynamic data in the reaction equation;

[0028] Based on the thermodynamic data, calculating the free energy change of the pure pyrolysis gas and the calcium oxide;

[0029] constructing an equilibrium constant expression for the reaction equation;

[0030] Based on the free energy change, calculating the equilibrium constant of the equilibrium constant expression using the component ratio optimization model;

[0031] The target pyrolysis gas is obtained by adjusting the ratio of CO and H2 in the pure pyrolysis gas according to the equilibrium constant.

[0032] Optionally, the calculating the free energy change of the pure pyrolysis gas and the calcium oxide based on the thermodynamic data includes:

[0033] Based on the thermodynamic data, identifying the standard enthalpy of formation and the standard molar entropy of the pure pyrolysis gas and the calcium oxide;

[0034] Based on the standard formation enthalpy, the reaction enthalpy change of the pure pyrolysis gas and the calcium oxide is calculated using the following formula:

[0035]

[0036] Where, ΔD 。 represents the reaction enthalpy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, Ca(OH)2 represents the reaction product, ρ represents the molar number of the reaction product, represents the standard enthalpy of formation, which represents the heat released or absorbed by the reaction to form 1 mole of a substance under standard conditions, (CO, H2, CaO) represents the reactants, i.e. calcium hydroxide, CO, H2 represents carbon monoxide and hydrogen in pure pyrolysis gas, and CaO represents calcium oxide;

[0037] Based on the standard molar entropy, the entropy change of the pure pyrolysis gas and the calcium oxide is calculated using the following formula:

[0038]

[0039] Among them, ΔP 。 represents the entropy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, Ca(OH)2 represents the reaction product, namely calcium hydroxide, ρ represents the molar number of the reaction product, ΔP c 。 represents standard molar entropy, which represents the entropy of 1 mole of a substance under standard conditions, (CO, H2, CaO) represents reactants, CO, H2 represents carbon monoxide and hydrogen in pure pyrolysis gas, and CaO represents calcium oxide;

[0040] Based on the reaction enthalpy change and the entropy change, the free energy change of the pure pyrolysis gas and the calcium oxide is calculated using the following formula:

[0041] ΔG 。 =ΔD 。 -TΔP 。

[0042] Among them, ΔG 。 represents the free energy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, ΔD 。 represents the reaction enthalpy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, ΔP 。 represents the entropy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, and T represents the absolute temperature.

[0043] Optionally, analyzing the thermodynamic properties of the target pyrolysis gas using the PR state equation in the Aspen Plus simulation environment includes:

[0044] determining the molecular geometry and molecular bond angles of the target pyrolysis gas;

[0045] identifying the molecular structure of the target pyrolysis gas by means of the molecular geometry and the molecular bond angle;

[0046] Analyzing an eccentricity factor of the target pyrolysis gas based on the molecular structure;

[0047] Based on the eccentricity factor, calculating state equation parameters of the PR state equation;

[0048] Based on the state equation parameters, the thermodynamic properties of the target pyrolysis gas are calculated, wherein the state equation parameters include gas density, gas pressure and gas temperature.

[0049] Optionally, the calculating the state equation parameters of the PR state equation based on the eccentricity factor includes:

[0050] Based on the eccentricity factor, the first coefficient of the PR state equation is calculated using the following formula:

[0051]

[0052] Where μ1 represents the first coefficient of the PR state equation, P o represents the critical pressure of the target pyrolysis gas corresponding to the PR state equation, R a is the universal gas constant, T o represents the critical temperature of the target pyrolysis gas corresponding to the PR state equation, ∈1 and ∈2 represent the eccentricity factors of the target pyrolysis gas corresponding to the PR state equation;

[0053] Based on the first coefficient, the second coefficient of the PR state equation is calculated using the following formula:

[0054]

[0055] Wherein, μ2 represents the second coefficient of the PR state equation, μ1 represents the first coefficient of the PR state equation, and P o represents the critical pressure of the target pyrolysis gas corresponding to the PR state equation, and P represents the pressure of the target pyrolysis gas corresponding to the PR state equation;

[0056] Based on the second coefficient, the state equation parameter of the PR state equation is calculated using the following formula:

[0057]

[0058] Wherein, α represents the state equation parameter of the PR state equation, P represents the pressure of the target pyrolysis gas corresponding to the PR state equation, and μ2 represents the second coefficient of the PR state equation.

[0059] Optionally, the calculating the thermodynamic properties of the target pyrolysis gas based on the state equation parameters includes:

[0060] Based on the state equation parameters, the gas density of the target pyrolysis gas is calculated using the following formula:

[0061]

[0062] Where M represents the gas density of the target pyrolysis gas, P represents the pressure of the target pyrolysis gas corresponding to the PR state equation, and R a represents the universal gas constant, α represents the state equation parameter of the PR state equation, T f represents the reaction temperature of the target pyrolysis gas;

[0063] Based on the gas density, the gas pressure of the target pyrolysis gas is calculated using the following formula:

[0064]

[0065] Where Y represents the gas pressure of the target pyrolysis gas, M represents the gas density of the target pyrolysis gas, and R a represents the universal gas constant, α represents the state equation parameter of the PR state equation, T f represents the reaction temperature of the target pyrolysis gas;

[0066] Based on the gas density, the gas temperature of the target pyrolysis gas is calculated using the following formula:

[0067]

[0068] Wherein, ω represents the gas temperature of the target pyrolysis gas, Y represents the gas pressure of the target pyrolysis gas, M represents the gas density of the target pyrolysis gas, R a represents the universal gas constant, α represents the state equation parameter of the PR state equation;

[0069] Thermodynamic properties of the target pyrolysis gas are determined based on the gas density, the gas pressure, and the gas temperature.

[0070] Optionally, the analyzing the simulated loss of the calcium hydroxide simulation result compared to the simulated optimization target includes:

[0071] Determining a desired state of the simulation optimization objective;

[0072] Based on the simulation optimization target, extracting optimization target data of the calcium hydroxide simulation result;

[0073] Based on the optimization target data, analyzing the current simulation state of the simulation optimization target;

[0074] Analyzing the simulated loss weight of the simulated optimization objective;

[0075] Based on the expected state, the current simulation state and the simulation loss weight, the simulation loss of the calcium hydroxide simulation result compared to the simulation optimization target is calculated.

[0076] To achieve the above object, the present invention also provides a preparation system for improving specific surface area and activity when processing calcium hydroxide, comprising:

[0077] A carbon-containing raw material processing module, used for obtaining a carbon-containing raw material of calcium oxide, pre-treating the carbon-containing raw material to obtain a processed carbon-containing raw material, pyrolyzing the processed carbon-containing raw material to obtain a pyrolysis gas, wherein the pyrolysis gas includes CO and H2;

[0078] A pyrolysis gas optimization module is used to construct a selective permeable membrane for the pyrolysis gas, remove impurities from the pyrolysis gas based on the selective permeable membrane to obtain pure pyrolysis gas, and adjust the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model to obtain target pyrolysis gas;

[0079] A simulation environment construction module, used to determine the simulation optimization target of the calcium oxide, wherein the simulation optimization target includes increasing the specific surface area and increasing the activity, and based on the simulation optimization target, construct an Aspen Plus simulation environment of the calcium oxide and the target pyrolysis gas;

[0080] A calcium hydroxide simulation module, for analyzing the thermodynamic properties of the target pyrolysis gas using the PR state equation in the Aspen Plus simulation environment, determining the catalyst of the target pyrolysis gas and the calcium oxide, analyzing the catalyst properties of the catalyst, configuring the initial process parameters of the parameter control module corresponding to the Aspen Plus simulation environment based on the thermodynamic properties and the catalyst properties, and reacting the target pyrolysis gas, calcium oxide and the catalyst in a plug flow reactor corresponding to the Aspen Plus simulation environment based on the initial process parameters to obtain a calcium hydroxide simulation result;

[0081] The process parameter optimization module is used to analyze the simulated loss of the calcium hydroxide simulation result compared to the simulation optimization target, optimize the initial process parameters based on the simulated loss to obtain target process parameters, and based on the target process parameters, use the target pyrolysis gas, calcium oxide and catalyst to react to obtain target calcium hydroxide.

[0082] In order to solve the above problem, the present invention further provides an electronic device, the electronic device comprising:

[0083] a memory storing at least one instruction; and

[0084] The processor executes the instructions stored in the memory to implement the preparation method for improving the specific surface area and activity when processing calcium hydroxide as described above.

[0085] In order to solve the above problems, the present invention also provides a computer-readable storage medium, in which at least one instruction is stored, and the at least one instruction is executed by a processor in an electronic device to implement the above-mentioned preparation method for improving specific surface area and activity when processing calcium hydroxide.

[0086] The present invention can purify the pyrolysis gas by constructing a selective permeable membrane of the pyrolysis gas, thereby improving the effect of the later reaction with calcium oxide; optionally, the present invention can improve the effect of the later reaction with calcium oxide by adjusting the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model; the present invention is based on the simulation optimization target, and constructs the Aspen Plus simulation environment of the calcium oxide and the target pyrolysis gas to provide a basis for the later simulation of the reaction of the calcium oxide and the target pyrolysis gas. Further, the present invention analyzes the thermodynamic properties of the target pyrolysis gas by using the PR state equation in the Aspen Plus simulation environment, which can be used as a basis for optimizing process design, thereby improving the effect of chemical engineering. Finally, the present invention analyzes the simulation loss of the calcium hydroxide simulation result compared to the simulation optimization target, and can optimize the reaction parameters according to the simulation loss, thereby achieving the optimization target of the calcium hydroxide reaction. Therefore, the present invention can improve the application performance of processed calcium hydroxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] Figure 1 A schematic flow chart of a preparation method for increasing specific surface area and activity when processing calcium hydroxide provided by one embodiment of the present invention;

[0088] Figure 2 A functional module diagram of a preparation system for improving specific surface area and activity when processing calcium hydroxide provided by one embodiment of the present invention;

[0089] Figure 3 A schematic structural diagram of an electronic device for implementing the preparation method for improving the specific surface area and activity when processing calcium hydroxide provided by one embodiment of the present invention.

[0090] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0091] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0092] The embodiment of the present application provides a preparation method for improving specific surface area and activity when processing calcium hydroxide. The execution subject of the preparation method for improving specific surface area and activity when processing calcium hydroxide includes but is not limited to at least one of the electronic devices such as a server, a terminal, etc. that can be configured to execute the method provided by the embodiment of the present application. In other words, the preparation method for improving specific surface area and activity when processing calcium hydroxide can be executed by software or hardware installed in a terminal device or a server device, and the software can be a blockchain platform. The server is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0093] Reference Figure 1 , which is a schematic flow diagram of a method for preparing calcium hydroxide for increasing specific surface area and activity when processing calcium hydroxide according to an embodiment of the present invention. In this embodiment, the method for preparing calcium hydroxide for increasing specific surface area and activity when processing calcium hydroxide includes:

[0094] S1. Obtain a carbon-containing raw material of calcium oxide, pretreat the carbon-containing raw material to obtain a treated carbon-containing raw material, pyrolyze the treated carbon-containing raw material to obtain a pyrolysis gas, wherein the pyrolysis gas includes CO and H2.

[0095] It should be explained that the calcium oxide is a common compound, usually used to prepare calcium hydroxide (Ca(OH)2); the carbon-containing raw materials refer to those raw materials containing carbon elements, such as coal, biomass, etc.; the processed carbon-containing raw materials refer to processed carbon-containing raw materials obtained through pretreatment such as crushing, grinding, drying, etc.; the pyrolysis gas refers to the gas produced during the pyrolysis process of the carbon-containing raw materials, and its main components include CO and H2.

[0096] In detail, the pyrolysis of the treated carbonaceous raw material to obtain pyrolysis gas includes:

[0097] Constructing a low-temperature pyrolysis environment for processing the carbon-containing raw material, and configuring pyrolysis parameters of the low-temperature pyrolysis environment;

[0098] Based on the pyrolysis parameters, performing low-temperature pyrolysis on the processed carbon-containing raw material in the low-temperature pyrolysis environment to obtain low-temperature pyrolysis gas and residual carbon-containing raw material;

[0099] Constructing a preset electric field of a plasma generator, and based on the electric field, ionizing the gas in the plasma generator to obtain plasma;

[0100] By means of the plasma, a high-temperature pyrolysis environment for the remaining carbon-containing raw materials is constructed;

[0101] Based on the high-temperature pyrolysis environment, the remaining carbon-containing raw material is subjected to high-temperature pyrolysis to obtain high-temperature pyrolysis gas;

[0102] The low-temperature pyrolysis gas and the high-temperature pyrolysis gas are fused to obtain the pyrolysis gas.

[0103] Among them, the low-temperature pyrolysis environment refers to a specific environment or device for low-temperature pyrolysis reaction, including a reactor, a temperature control system, a gas flow system, etc. The pyrolysis parameters refer to various parameters for controlling the low-temperature pyrolysis process, such as temperature, pressure, residence time, composition of the pyrolysis atmosphere (such as oxygen or water vapor), etc. The low-temperature pyrolysis gas refers to a gas mixture produced during the low-temperature pyrolysis process, mainly containing CO and H2, and may also contain other gas components. The residual carbon-containing raw material refers to the raw material that is not completely pyrolyzed after low-temperature pyrolysis, which usually contains less carbon and may also contain other unreacted components. The electric field refers to the electric field established in the plasma generator, which is used to accelerate gas molecules. The ionization process forms plasma. The plasma generator refers to a device that can generate plasma, usually including structures such as electrodes, power supplies, and cooling systems. The plasma refers to an ionized gas composed of ions and free electrons formed in the plasma generator, which has high temperature and high energy characteristics. The gas in the plasma generator refers to the gas used to generate plasma, such as argon, nitrogen, etc. These gases are ionized under the action of an electric field. The high-temperature pyrolysis environment refers to a specific environment or device for high-temperature pyrolysis reactions, usually composed of high-temperature conditions provided by plasma. The high-temperature pyrolysis gas refers to a gas mixture generated during the high-temperature pyrolysis process, usually containing more abundant CO and H2.

[0104] Furthermore, the construction of the low-temperature pyrolysis environment for processing the carbon-containing raw materials and the configuration of the pyrolysis parameters of the low-temperature pyrolysis environment can be achieved through a fixed bed reactor or a fluidized bed reactor.

[0105] S2. Construct a selective permeable membrane for the pyrolysis gas, remove impurities from the pyrolysis gas based on the selective permeable membrane to obtain pure pyrolysis gas, and adjust the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model to obtain target pyrolysis gas.

[0106] The present invention can achieve purification of the pyrolysis gas by constructing a selective permeable membrane for the pyrolysis gas, thereby improving the effect of the subsequent reaction with calcium oxide.

[0107] In detail, the construction of the selective permeable membrane for the pyrolysis gas comprises:

[0108] analyzing the composition properties of the pyrolysis gas;

[0109] determining a film-forming material of the pyrolysis gas based on the component properties;

[0110] constructing a polymer film of the pyrolysis gas based on the film-forming material;

[0111] Integrating a preset organic functional group into the film surface of the polymer film to obtain a functional polymer film;

[0112] Characterizing the functional polymer film to obtain a characterization result;

[0113] When the characterization result meets the preset standard characterization result, the functional polymer membrane is used as a selective permeable membrane for the pyrolysis gas.

[0114] Among them, the component attributes refer to the type, concentration, physical and chemical properties of each component in the pyrolysis gas, which determine the purpose and subsequent processing requirements of the pyrolysis gas. The film-forming material refers to the material used to prepare the polymer film, and its selection depends on the component attributes of the pyrolysis gas and the required membrane performance. The polymer membrane refers to a membrane formed by the polymerization of film-forming materials, which is used to separate and purify pyrolysis gases. The organic functional group refers to a specific organic group introduced on the surface of the polymer membrane. These functional groups can enhance the selectivity of the membrane for specific gases. The functional polymer membrane refers to a polymer membrane with organic functional groups integrated on the surface of the polymer membrane, which has specific functions, such as selective permeability. The characterization result refers to the data and information obtained by characterizing the functional polymer membrane through various analytical techniques, such as pore size distribution, chemical composition, surface properties and other results. The standard characterization result refers to the comparison and evaluation of the characterization results of the functional polymer membrane according to preset standards or requirements. The selectively permeable membrane refers to a membrane with specific selective permeability, which can effectively separate and purify the target components in the pyrolysis gas.

[0115] Furthermore, the construction of the polymer film of the pyrolysis gas based on the film-forming material can be achieved by a phase separation method, a sol-gel method, a chemical vapor deposition method, or the like.

[0116] It should be explained that the pure pyrolysis gas refers to the gas obtained by removing gas impurities except CO and H2 from the pyrolysis gas through the selective permeable membrane.

[0117] The present invention adjusts the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model to improve the effect of the later reaction with calcium oxide.

[0118] In detail, the ratio of CO and H2 corresponding to the pure pyrolysis gas is adjusted by a preset component ratio optimization model to obtain the target pyrolysis gas, including:

[0119] Determine the reaction equation of the pure pyrolysis gas and the pure pyrolysis gas corresponding to calcium oxide;

[0120] determining thermodynamic data in the reaction equation;

[0121] Based on the thermodynamic data, calculating the free energy change of the pure pyrolysis gas and the calcium oxide;

[0122] constructing an equilibrium constant expression for the reaction equation;

[0123] Based on the free energy change, calculating the equilibrium constant of the equilibrium constant expression using the component ratio optimization model;

[0124] The target pyrolysis gas is obtained by adjusting the ratio of CO and H2 in the pure pyrolysis gas according to the equilibrium constant.

[0125] Among them, the reaction equation refers to the chemical equation for the reaction of calcium oxide with CO and H2 in pure pyrolysis gas, the thermodynamic data refers to thermodynamic data related to the reaction equation, such as formation enthalpy (ΔH°), standard molar entropy (ΔS°), etc., the free energy change refers to the change in Gibbs free energy when the reactants are converted into products under standard conditions, the equilibrium constant expression refers to a mathematical expression describing the relationship between the concentration ratio of reactants and products and the equilibrium constant, the equilibrium constant refers to the relationship between the product of the concentration ratio of reactants and products and the equilibrium constant at a specific temperature, the target pyrolysis gas is the ideal pyrolysis gas composition calculated according to the component ratio optimization model, and the component ratio optimization model refers to a mathematical model used to optimize the ratio of CO and H2 in pure pyrolysis gas.

[0126] Furthermore, the calculating of the free energy change of the pure pyrolysis gas and the calcium oxide based on the thermodynamic data includes:

[0127] Based on the thermodynamic data, identifying the standard enthalpy of formation and the standard molar entropy of the pure pyrolysis gas and the calcium oxide;

[0128] Based on the standard formation enthalpy, the reaction enthalpy change of the pure pyrolysis gas and the calcium oxide is calculated using the following formula:

[0129]

[0130] Where, ΔD 。 represents the reaction enthalpy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, Ca(OH)2 represents the reaction product, ρ represents the molar number of the reaction product, represents the standard enthalpy of formation, which represents the heat released or absorbed by the reaction to form 1 mole of a substance under standard conditions, (CO, H2, CaO) represents the reactants, i.e. calcium hydroxide, CO, H2 represents carbon monoxide and hydrogen in pure pyrolysis gas, and CaO represents calcium oxide;

[0131] Based on the standard molar entropy, the entropy change of the pure pyrolysis gas and the calcium oxide is calculated using the following formula:

[0132]

[0133] Among them, ΔP 。 represents the entropy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, Ca(OH)2 represents the reaction product, namely calcium hydroxide, and ρ represents the molar number of the reaction product. represents standard molar entropy, which represents the entropy of 1 mole of a substance under standard conditions, (CO, H2, CaO) represents reactants, CO, H2 represents carbon monoxide and hydrogen in pure pyrolysis gas, and CaO represents calcium oxide;

[0134] Based on the reaction enthalpy change and the entropy change, the free energy change of the pure pyrolysis gas and the calcium oxide is calculated using the following formula:

[0135] ΔG 。 =ΔD 。 -TΔP 。

[0136] Among them, ΔG 。 represents the free energy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, ΔD 。 represents the reaction enthalpy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, ΔP 。 represents the entropy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, and T represents the absolute temperature.

[0137] Among them, the reaction enthalpy change refers to the heat absorbed or released by the system when the chemical reaction changes from the initial state to the final state under constant pressure conditions, the entropy change refers to the change in the disorder of the system when the chemical reaction changes from the initial state to the final state under constant temperature conditions, and the absolute temperature is the zero point of the thermodynamic temperature scale, and its absolute temperature value is 0K.

[0138] S3. Determine the simulation optimization target of the calcium oxide, wherein the simulation optimization target includes increasing the specific surface area and increasing the activity, and construct an Aspen Plus simulation environment of the calcium oxide and the target pyrolysis gas based on the simulation optimization target.

[0139] The specific surface area refers to the size of the surface area of ​​a substance per unit mass or unit volume, and the activity refers to the ability of calcium oxide to chemically react with reactants under specific conditions.

[0140] Based on the simulation optimization target, the present invention constructs the Aspen Plus simulation environment of the calcium oxide and the target pyrolysis gas to provide a basis for the subsequent reaction simulation of the calcium oxide and the target pyrolysis gas. The Aspen Plus simulation environment refers to a virtual model of a simulated chemical engineering process created using Aspen Plus software. Specifically, the Aspen Plus simulation environment can be implemented by installing Aspen Plus software on a computer, opening Aspen Plus, and creating a new simulation file.

[0141] S4. Analyze the thermodynamic properties of the target pyrolysis gas by using the PR state equation in the Aspen Plus simulation environment, determine the catalyst of the target pyrolysis gas and the calcium oxide, analyze the catalyst properties of the catalyst, configure the initial process parameters of the parameter control module corresponding to the Aspen Plus simulation environment based on the thermodynamic properties and the catalyst properties, and react the target pyrolysis gas, calcium oxide and the catalyst in the plug flow reactor corresponding to the Aspen Plus simulation environment based on the initial process parameters to obtain a calcium hydroxide simulation result.

[0142] The present invention analyzes the thermodynamic properties of the target pyrolysis gas by utilizing the PR state equation in the Aspen Plus simulation environment, which can be used as a basis for optimizing process design, thereby improving the effect of chemical engineering.

[0143] In detail, the use of the PR state equation in the Aspen Plus simulation environment to analyze the thermodynamic properties of the target pyrolysis gas includes:

[0144] determining the molecular geometry and molecular bond angles of the target pyrolysis gas;

[0145] identifying the molecular structure of the target pyrolysis gas by means of the molecular geometry and the molecular bond angle;

[0146] Analyzing an eccentricity factor of the target pyrolysis gas based on the molecular structure;

[0147] Based on the eccentricity factor, calculating state equation parameters of the PR state equation;

[0148] Based on the state equation parameters, the thermodynamic properties of the target pyrolysis gas are calculated, wherein the state equation parameters include gas density, gas pressure and gas temperature.

[0149] Among them, the molecular geometry refers to the shape of the target pyrolysis gas molecule in three-dimensional space, including the length, width and height of the molecule, etc., the molecular bond angle refers to the angle formed by the bonds between different atoms in the molecule, and these angles determine the spatial configuration of the molecule, the molecular structure refers to the arrangement of atoms inside the molecule determined based on the molecular geometry and the molecular bond angle, including the type, number and connection method of atoms, the eccentricity factor refers to a parameter used to describe the shape of the molecule, which reflects the degree of deviation of the molecule from the ideal spherical molecule, the state equation parameter, the PR state equation refers to a cubic state equation used to describe the gas state, and the thermodynamic properties refer to the gas properties calculated by the state equation parameters in the PR state equation, such as density, pressure and temperature.

[0150] Further, the calculating of the state equation parameters of the PR state equation based on the eccentricity factor includes:

[0151] Based on the eccentricity factor, the first coefficient of the PR state equation is calculated using the following formula:

[0152]

[0153] Where μ1 represents the first coefficient of the PR state equation, P o represents the critical pressure of the target pyrolysis gas corresponding to the PR state equation, R a is the universal gas constant, T o represents the critical temperature of the target pyrolysis gas corresponding to the PR state equation, ∈1 and ∈2 represent the eccentricity factors of the target pyrolysis gas corresponding to the PR state equation;

[0154] Based on the first coefficient, the second coefficient of the PR state equation is calculated using the following formula:

[0155]

[0156] Wherein, μ2 represents the second coefficient of the PR state equation, μ1 represents the first coefficient of the PR state equation, and P o represents the critical pressure of the target pyrolysis gas corresponding to the PR state equation, and P represents the pressure of the target pyrolysis gas corresponding to the PR state equation;

[0157] Based on the second coefficient, the state equation parameter of the PR state equation is calculated using the following formula:

[0158]

[0159] Wherein, α represents the state equation parameter of the PR state equation, P represents the pressure of the target pyrolysis gas corresponding to the PR state equation, and μ2 represents the second coefficient of the PR state equation.

[0160] Among them, the first coefficient refers to the coefficient used to describe the interaction between gas molecules in the PR state equation, including the magnitude and direction of the intermolecular force. The second coefficient refers to the coefficient used to describe the repulsive force between gas molecules in the PR state equation, which is related to the molecular geometry of the molecules. The critical pressure refers to the pressure of the gas at the critical point, which is a key property of the gas and is used to calculate the coefficients in the state equation. The universal gas constant refers to the molar gas constant of unit mole of gas under standard conditions (0°C, 1atm) in the ideal gas state equation, and its value is 8.314J / (mol·K). The critical temperature refers to the temperature of the gas at the critical point, which is another key property of the gas and is used to calculate the coefficients in the state equation.

[0161] Furthermore, the calculating the thermodynamic properties of the target pyrolysis gas based on the state equation parameters includes:

[0162] Based on the state equation parameters, the gas density of the target pyrolysis gas is calculated using the following formula:

[0163]

[0164] Where M represents the gas density of the target pyrolysis gas, P represents the pressure of the target pyrolysis gas corresponding to the PR state equation, and R a represents the universal gas constant, α represents the state equation parameter of the PR state equation, T f represents the reaction temperature of the target pyrolysis gas;

[0165] Based on the gas density, the gas pressure of the target pyrolysis gas is calculated using the following formula:

[0166]

[0167] Where Y represents the gas pressure of the target pyrolysis gas, M represents the gas density of the target pyrolysis gas, and R a represents the universal gas constant, α represents the state equation parameter of the PR state equation, T f represents the reaction temperature of the target pyrolysis gas;

[0168] Based on the gas density, the gas temperature of the target pyrolysis gas is calculated using the following formula:

[0169]

[0170] Wherein, ω represents the gas temperature of the target pyrolysis gas, Y represents the gas pressure of the target pyrolysis gas, M represents the gas density of the target pyrolysis gas, R a represents the universal gas constant, α represents the state equation parameter of the PR state equation;

[0171] Thermodynamic properties of the target pyrolysis gas are determined based on the gas density, the gas pressure, and the gas temperature.

[0172] The present invention determines the target pyrolysis gas and the catalyst of the calcium oxide, analyzes the catalyst properties of the catalyst, and based on the thermodynamic properties and catalyst properties, configures the initial process parameters of the parameter control module corresponding to the Aspen Plus simulation environment, which can be used as the initial conditions for the subsequent reaction.

[0173] Among them, the catalyst refers to a substance used to accelerate chemical reactions. It usually does not participate in the reaction itself, but can reduce the activation energy of the reaction, thereby increasing the reaction rate. The catalyst property refers to the characteristics of the catalyst, such as activity, selectivity, stability, life, etc. These properties determine the performance of the catalyst in practical applications. The parameter control module refers to a component used to adjust and optimize process parameters in chemical simulation software such as Aspen Plus. It allows users to define target values ​​and constraints of operating parameters. The initial process parameters refer to the process parameters set at the beginning of the simulation.

[0174] For example, if the reaction of the target pyrolysis gas and calcium oxide needs to be accelerated, metal oxide catalysts such as nickel oxide (NiO), copper oxide (CuO), etc. can be used. These catalysts have high activity and selectivity and can effectively promote the reaction. In the Aspen Plus simulation environment, the operating parameters such as the amount of catalyst added, temperature, and pressure can be set through the parameter control module to achieve control of the reaction rate and product.

[0175] Based on the initial process parameters, the target pyrolysis gas, calcium oxide and catalyst are reacted in a plug flow reactor corresponding to the Aspen Plus simulation environment to obtain a calcium hydroxide simulation result, which can be used as a basis for optimizing later process parameters by analyzing the simulation results. In detail, the calcium hydroxide simulation result includes the generation rate, conversion rate and generation of calcium hydroxide during the reaction process, including parameters such as output, purity, specific surface area and activity.

[0176] S5. Analyze the simulated loss of the calcium hydroxide simulation result compared to the simulated optimization target, optimize the initial process parameters based on the simulated loss to obtain target process parameters, and based on the target process parameters, react with the target pyrolysis gas, calcium oxide and catalyst to obtain target calcium hydroxide.

[0177] The present invention analyzes the simulated loss of the calcium hydroxide simulation result compared to the simulation optimization target and can optimize the reaction parameters according to the simulated loss, thereby achieving the optimization target of the calcium hydroxide reaction.

[0178] In detail, the analysis of the simulated loss of the calcium hydroxide simulation result compared to the simulated optimization target includes:

[0179] Determining a desired state of the simulation optimization objective;

[0180] Based on the simulation optimization target, extracting optimization target data of the calcium hydroxide simulation result;

[0181] Based on the optimization target data, analyzing the current simulation state of the simulation optimization target;

[0182] Analyzing the simulated loss weight of the simulated optimization objective;

[0183] Based on the expected state, the current simulation state and the simulation loss weight, the simulation loss of the calcium hydroxide simulation result compared to the simulation optimization target is calculated.

[0184] Wherein, the desired state refers to the optimization target of the calcium hydroxide simulation result set according to the process requirements and expected performance. For example, the desired state is high specific surface area and high activity, the optimization target data refers to the data describing the simulation optimization target, such as specific surface area data and activity data, the current simulation state refers to the current specific surface area state and activity state, the simulation loss weight refers to the importance of specific surface area and activity to the optimization target of calcium hydroxide, and the simulation loss refers to the overall loss calculated according to the current simulation state and the simulation loss weight. For example, the desired state is high specific surface area and high activity, and the simulation loss is the weighted sum of the specific surface area loss and the activity loss.

[0185] Based on the simulated loss, the initial process parameters are optimized to obtain target process parameters that can improve the specific surface area and activity of processed calcium hydroxide. In detail, the optimization of the initial process parameters can be performed by optimization algorithms such as genetic algorithm, particle swarm optimization algorithm, gradient descent algorithm, etc., according to the optimization target and simulated loss. Wherein, the target process parameters refer to parameters that can achieve the processing of calcium hydroxide to improve its specific surface area and activity to the desired state.

[0186] The present invention can purify the pyrolysis gas by constructing a selective permeable membrane of the pyrolysis gas, thereby improving the effect of the later reaction with calcium oxide; optionally, the present invention can improve the effect of the later reaction with calcium oxide by adjusting the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model; the present invention is based on the simulation optimization target, and constructs the Aspen Plus simulation environment of the calcium oxide and the target pyrolysis gas to provide a basis for the later simulation of the reaction of the calcium oxide and the target pyrolysis gas. Further, the present invention analyzes the thermodynamic properties of the target pyrolysis gas by using the PR state equation in the Aspen Plus simulation environment, which can be used as a basis for optimizing process design, thereby improving the effect of chemical engineering. Finally, the present invention analyzes the simulation loss of the calcium hydroxide simulation result compared to the simulation optimization target, and can optimize the reaction parameters according to the simulation loss, thereby achieving the optimization target of the calcium hydroxide reaction. Therefore, the present invention can improve the application performance of processed calcium hydroxide.

[0187] like Figure 2 , which is a functional module diagram of a preparation system for improving specific surface area and activity when processing calcium hydroxide provided by one embodiment of the present invention.

[0188] The preparation system 100 for improving specific surface area and activity when processing calcium hydroxide of the present invention can be installed in an electronic device. According to the functions realized, the preparation system 100 for improving specific surface area and activity when processing calcium hydroxide can include a carbonaceous raw material processing module 101, a pyrolysis gas optimization module 102, a simulation environment construction module 103, a calcium hydroxide simulation module 104 and a process parameter optimization module 105. The module of the present invention can also be referred to as a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0189] The carbon-containing raw material processing module 101 is used to obtain a carbon-containing raw material of calcium oxide, pre-treat the carbon-containing raw material to obtain a processed carbon-containing raw material, and pyrolyze the processed carbon-containing raw material to obtain a pyrolysis gas, wherein the pyrolysis gas includes CO and H2;

[0190] The pyrolysis gas optimization module 102 is used to construct a selective permeable membrane for the pyrolysis gas, remove impurities from the pyrolysis gas based on the selective permeable membrane to obtain pure pyrolysis gas, and adjust the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model to obtain target pyrolysis gas;

[0191] The simulation environment construction module 103 is used to determine the simulation optimization target of the calcium oxide, wherein the simulation optimization target includes increasing the specific surface area and increasing the activity, and based on the simulation optimization target, construct an Aspen Plus simulation environment of the calcium oxide and the target pyrolysis gas;

[0192] The calcium hydroxide simulation module 104 is used to analyze the thermodynamic properties of the target pyrolysis gas using the PR state equation in the Aspen Plus simulation environment, determine the catalyst of the target pyrolysis gas and the calcium oxide, analyze the catalyst properties of the catalyst, configure the initial process parameters of the parameter control module corresponding to the Aspen Plus simulation environment based on the thermodynamic properties and the catalyst properties, and react the target pyrolysis gas, calcium oxide and the catalyst in the plug flow reactor corresponding to the Aspen Plus simulation environment based on the initial process parameters to obtain a calcium hydroxide simulation result;

[0193] The process parameter optimization module 105 is used to analyze the simulated loss of the calcium hydroxide simulation result compared to the simulation optimization target, optimize the initial process parameters based on the simulated loss to obtain target process parameters, and based on the target process parameters, use the target pyrolysis gas, calcium oxide and catalyst to react to obtain target calcium hydroxide.

[0194] In detail, the modules in the preparation system 100 for improving the specific surface area and activity when processing calcium hydroxide in the embodiment of the present invention are used in the same manner as described above. Figure 1 The same technical means as the preparation method for improving the specific surface area and activity when processing calcium hydroxide described in the above method can produce the same technical effects, so they will not be repeated here.

[0195] like Figure 3 , which is a schematic diagram of the structure of an electronic device for realizing a preparation method for improving specific surface area and activity when processing calcium hydroxide provided by one embodiment of the present invention.

[0196] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as a preparation method program for increasing specific surface area and activity when processing calcium hydroxide.

[0197] Wherein, the memory 11 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (for example: SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. The memory 11 can be an internal storage unit of the electronic device 1 in some embodiments, such as a mobile hard disk of the electronic device 1. The memory 11 can also be an external storage device of the electronic device 1 in other embodiments, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 1. Further, the memory 11 also includes an internal storage unit of the electronic device 1 and an external storage device. The memory 11 can not only be used to store application software and various types of data installed in the electronic device 1, such as the code of the preparation method program for increasing the specific surface area and activity when processing calcium hydroxide, but can also be used to temporarily store data that has been output or is to be output.

[0198] The processor 10 may be composed of an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips, etc. The processor 10 is the control core (Control Unit) of the electronic device, and uses various interfaces and lines to connect various components of the entire electronic device, and executes or executes programs or modules stored in the memory 11 (for example, a preparation method program for increasing specific surface area and activity when processing calcium hydroxide, etc.), and calls data stored in the memory 11 to execute various functions of the electronic device 1 and process data.

[0199] The bus 12 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 may be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to realize connection and communication between the memory 11 and at least one processor 10, etc.

[0200] Figure 3 Only an electronic device with components is shown, and those skilled in the art will understand that Figure 3The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0201] For example, although not shown, the electronic device 1 may also include a power source (such as a battery) for supplying power to each component. Preferably, the power source may be logically connected to the at least one processor 10 through a power management device, so that the power management device can realize functions such as charging management, discharging management, and power consumption management. The power source may also include any components such as one or more DC or AC power sources, recharging devices, power failure detection circuits, power converters or inverters, power status indicators, etc. The electronic device 1 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0202] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0203] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), or a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode) touch device. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device 1 and to display a visual user interface.

[0204] It should be understood that the embodiment is for illustration only and the scope of the patent application is not limited to this structure.

[0205] The preparation method program for increasing the specific surface area and activity when processing calcium hydroxide stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve:

[0206] Obtaining a carbon-containing raw material of calcium oxide, pre-treating the carbon-containing raw material to obtain a treated carbon-containing raw material, pyrolyzing the treated carbon-containing raw material to obtain a pyrolysis gas, wherein the pyrolysis gas includes CO and H2;

[0207] Constructing a selective permeable membrane for the pyrolysis gas, removing impurities from the pyrolysis gas based on the selective permeable membrane to obtain pure pyrolysis gas, and adjusting the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model to obtain target pyrolysis gas;

[0208] Determining a simulation optimization target of the calcium oxide, wherein the simulation optimization target includes increasing specific surface area and increasing activity, and constructing an Aspen Plus simulation environment of the calcium oxide and target pyrolysis gas based on the simulation optimization target;

[0209] Analyzing the thermodynamic properties of the target pyrolysis gas by using the PR state equation in the Aspen Plus simulation environment, determining the catalyst of the target pyrolysis gas and the calcium oxide, analyzing the catalyst properties of the catalyst, configuring the initial process parameters of the parameter control module corresponding to the Aspen Plus simulation environment based on the thermodynamic properties and the catalyst properties, and reacting the target pyrolysis gas, calcium oxide and the catalyst in a plug flow reactor corresponding to the Aspen Plus simulation environment based on the initial process parameters to obtain a calcium hydroxide simulation result;

[0210] The simulated loss of the calcium hydroxide simulation result is analyzed compared with the simulated optimization target. Based on the simulated loss, the initial process parameters are optimized to obtain target process parameters. Based on the target process parameters, the target pyrolysis gas, calcium oxide and catalyst are reacted to obtain the target calcium hydroxide.

[0211] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figures 1 to 3 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0212] Furthermore, if the module / unit integrated in the electronic device 1 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0213] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor of an electronic device, the computer program can implement:

[0214] Obtaining a carbon-containing raw material of calcium oxide, pre-treating the carbon-containing raw material to obtain a treated carbon-containing raw material, pyrolyzing the treated carbon-containing raw material to obtain a pyrolysis gas, wherein the pyrolysis gas includes CO and H2;

[0215] Constructing a selective permeable membrane for the pyrolysis gas, removing impurities from the pyrolysis gas based on the selective permeable membrane to obtain pure pyrolysis gas, and adjusting the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model to obtain target pyrolysis gas;

[0216] Determining a simulation optimization target of the calcium oxide, wherein the simulation optimization target includes increasing specific surface area and increasing activity, and constructing an Aspen Plus simulation environment of the calcium oxide and target pyrolysis gas based on the simulation optimization target;

[0217] Analyzing the thermodynamic properties of the target pyrolysis gas by using the PR state equation in the Aspen Plus simulation environment, determining the catalyst of the target pyrolysis gas and the calcium oxide, analyzing the catalyst properties of the catalyst, configuring the initial process parameters of the parameter control module corresponding to the Aspen Plus simulation environment based on the thermodynamic properties and the catalyst properties, and reacting the target pyrolysis gas, calcium oxide and the catalyst in a plug flow reactor corresponding to the Aspen Plus simulation environment based on the initial process parameters to obtain a calcium hydroxide simulation result;

[0218] The simulated loss of the calcium hydroxide simulation result is analyzed compared with the simulated optimization target. Based on the simulated loss, the initial process parameters are optimized to obtain target process parameters. Based on the target process parameters, the target pyrolysis gas, calcium oxide and catalyst are reacted to obtain the target calcium hydroxide.

[0219] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only illustrative, and actual implementation may have other division methods.

[0220] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0221] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0222] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0223] In addition, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices stated in the system claim can also be implemented by one unit or device through software or hardware. The second and other words are used to indicate names, but not to indicate any particular order.

[0224] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A preparation method for increasing specific surface area and activity when processing calcium hydroxide, characterized in that: The method comprises: Obtaining a carbon-containing raw material of calcium oxide, pre-treating the carbon-containing raw material to obtain a treated carbon-containing raw material, pyrolyzing the treated carbon-containing raw material to obtain a pyrolysis gas, wherein the pyrolysis gas includes CO and H2; Constructing a selective permeable membrane for the pyrolysis gas, removing impurities from the pyrolysis gas based on the selective permeable membrane to obtain pure pyrolysis gas, and adjusting the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model to obtain target pyrolysis gas; Determining a simulation optimization target of the calcium oxide, wherein the simulation optimization target includes increasing specific surface area and increasing activity, and constructing an Aspen Plus simulation environment of the calcium oxide and target pyrolysis gas based on the simulation optimization target; Analyzing the thermodynamic properties of the target pyrolysis gas by using the PR state equation in the Aspen Plus simulation environment, determining the catalyst of the target pyrolysis gas and the calcium oxide, analyzing the catalyst properties of the catalyst, configuring the initial process parameters of the parameter control module corresponding to the Aspen Plus simulation environment based on the thermodynamic properties and the catalyst properties, and reacting the target pyrolysis gas, calcium oxide and the catalyst in a plug flow reactor corresponding to the Aspen Plus simulation environment based on the initial process parameters to obtain a calcium hydroxide simulation result; The simulated loss of the calcium hydroxide simulation result is analyzed compared with the simulated optimization target. Based on the simulated loss, the initial process parameters are optimized to obtain target process parameters. Based on the target process parameters, the target pyrolysis gas, calcium oxide and catalyst are reacted to obtain the target calcium hydroxide.

2. The method for preparing calcium hydroxide according to claim 1, wherein the specific surface area and activity are increased. The step of pyrolyzing the treated carbonaceous raw material to obtain pyrolysis gas comprises: Constructing a low-temperature pyrolysis environment for processing the carbon-containing raw material, and configuring pyrolysis parameters of the low-temperature pyrolysis environment; Based on the pyrolysis parameters, performing low-temperature pyrolysis on the processed carbon-containing raw material in the low-temperature pyrolysis environment to obtain low-temperature pyrolysis gas and residual carbon-containing raw material; Constructing a preset electric field of a plasma generator, and based on the electric field, ionizing the gas in the plasma generator to obtain plasma; By means of the plasma, a high-temperature pyrolysis environment for the remaining carbon-containing raw materials is constructed; Based on the high-temperature pyrolysis environment, the remaining carbon-containing raw material is subjected to high-temperature pyrolysis to obtain high-temperature pyrolysis gas; The low-temperature pyrolysis gas and the high-temperature pyrolysis gas are fused to obtain the pyrolysis gas.

3. The preparation method for improving specific surface area and activity when processing calcium hydroxide as claimed in claim 2, characterized in that, The method of constructing the selective permeable membrane for the pyrolysis gas comprises: analyzing the composition properties of the pyrolysis gas; determining a film-forming material of the pyrolysis gas based on the component properties; constructing a polymer film of the pyrolysis gas based on the film-forming material; Integrating a preset organic functional group into the film surface of the polymer film to obtain a functional polymer film; Characterizing the functional polymer film to obtain a characterization result; When the characterization result meets the preset standard characterization result, the functional polymer membrane is used as a selective permeable membrane for the pyrolysis gas.

4. The preparation method for improving specific surface area and activity when processing calcium hydroxide as claimed in claim 3, characterized in that, The method of adjusting the ratio of CO and H2 corresponding to the pure pyrolysis gas by a preset component ratio optimization model to obtain the target pyrolysis gas includes: Determine the reaction equation of the pure pyrolysis gas and the pure pyrolysis gas corresponding to calcium oxide; determining thermodynamic data in the reaction equation; Based on the thermodynamic data, calculating the free energy change of the pure pyrolysis gas and the calcium oxide; constructing an equilibrium constant expression for the reaction equation; Based on the free energy change, calculating the equilibrium constant of the equilibrium constant expression using the component ratio optimization model; The target pyrolysis gas is obtained by adjusting the ratio of CO and H2 in the pure pyrolysis gas according to the equilibrium constant.

5. The preparation method for improving specific surface area and activity when processing calcium hydroxide as claimed in claim 4, characterized in that, The step of calculating the free energy change of the pure pyrolysis gas and the calcium oxide based on the thermodynamic data comprises: Based on the thermodynamic data, identifying the standard enthalpy of formation and the standard molar entropy of the pure pyrolysis gas and the calcium oxide; Based on the standard formation enthalpy, the reaction enthalpy change of the pure pyrolysis gas and the calcium oxide is calculated using the following formula: Where, ΔD 。 represents the reaction enthalpy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, Ca(OH)2 represents the reaction product, ρ represents the molar number of the reaction product, represents the standard enthalpy of formation, which represents the heat released or absorbed by the reaction to form 1 mole of a substance under standard conditions, (CO, H2, CaO) represents the reactants, i.e. calcium hydroxide, CO, H2 represents carbon monoxide and hydrogen in pure pyrolysis gas, and CaO represents calcium oxide; Based on the standard molar entropy, the entropy change of the pure pyrolysis gas and the calcium oxide is calculated using the following formula: Among them, ΔP 。 represents the entropy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, Ca(OH)2 represents the reaction product, namely calcium hydroxide, and ρ represents the molar number of the reaction product. represents standard molar entropy, which represents the entropy of 1 mole of a substance under standard conditions, (CO, H2, CaO) represents reactants, CO, H2 represents carbon monoxide and hydrogen in pure pyrolysis gas, and CaO represents calcium oxide; Based on the reaction enthalpy change and the entropy change, the free energy change of the pure pyrolysis gas and the calcium oxide is calculated using the following formula: ΔG 。 =ΔD 。 -TΔP 。 Among them, ΔG 。 represents the free energy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, ΔD 。 represents the reaction enthalpy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, ΔP 。 represents the entropy change of pure pyrolysis gas and calcium oxide into calcium hydroxide, and T represents the absolute temperature.

6. The method for preparing calcium hydroxide according to claim 5, wherein the specific surface area and activity are increased. The method of analyzing the thermodynamic properties of the target pyrolysis gas by using the PR state equation in the Aspen Plus simulation environment includes: determining the molecular geometry and molecular bond angles of the target pyrolysis gas; identifying the molecular structure of the target pyrolysis gas by means of the molecular geometry and the molecular bond angle; Analyzing the eccentricity factor of the target pyrolysis gas based on the molecular structure; Based on the eccentricity factor, calculating state equation parameters of the PR state equation; Based on the state equation parameters, the thermodynamic properties of the target pyrolysis gas are calculated, wherein the state equation parameters include gas density, gas pressure and gas temperature.

7. The method for preparing calcium hydroxide according to claim 6 for improving specific surface area and activity, wherein: The step of calculating the state equation parameters of the PR state equation based on the eccentricity factor includes: Based on the eccentricity factor, the first coefficient of the PR state equation is calculated using the following formula: Where μ1 represents the first coefficient of the PR state equation, P o represents the critical pressure of the target pyrolysis gas corresponding to the PR state equation, R a is the universal gas constant, T o represents the critical temperature of the target pyrolysis gas corresponding to the PR state equation, ∈1 and ∈2 represent the eccentricity factors of the target pyrolysis gas corresponding to the PR state equation; Based on the first coefficient, the second coefficient of the PR state equation is calculated using the following formula: Wherein, μ2 represents the second coefficient of the PR state equation, μ1 represents the first coefficient of the PR state equation, and P o represents the critical pressure of the target pyrolysis gas corresponding to the PR state equation, and P represents the pressure of the target pyrolysis gas corresponding to the PR state equation; Based on the second coefficient, the state equation parameter of the PR state equation is calculated using the following formula: Wherein, α represents the state equation parameter of the PR state equation, P represents the pressure of the target pyrolysis gas corresponding to the PR state equation, and μ2 represents the second coefficient of the PR state equation.

8. The method for preparing calcium hydroxide according to claim 7, wherein the specific surface area and activity are increased. The step of calculating the thermodynamic properties of the target pyrolysis gas based on the state equation parameters includes: Based on the state equation parameters, the gas density of the target pyrolysis gas is calculated using the following formula: Where M represents the gas density of the target pyrolysis gas, P represents the pressure of the target pyrolysis gas corresponding to the PR state equation, and R a represents the universal gas constant, α represents the state equation parameter of the PR state equation, T f represents the reaction temperature of the target pyrolysis gas; Based on the gas density, the gas pressure of the target pyrolysis gas is calculated using the following formula: Where Y represents the gas pressure of the target pyrolysis gas, M represents the gas density of the target pyrolysis gas, and R a represents the universal gas constant, α represents the state equation parameter of the PR state equation, T f represents the reaction temperature of the target pyrolysis gas; Based on the gas density, the gas temperature of the target pyrolysis gas is calculated using the following formula: Wherein, ω represents the gas temperature of the target pyrolysis gas, Y represents the gas pressure of the target pyrolysis gas, M represents the gas density of the target pyrolysis gas, R a represents the universal gas constant, α represents the state equation parameter of the PR state equation; Thermodynamic properties of the target pyrolysis gas are determined based on the gas density, the gas pressure, and the gas temperature.

9. The method for preparing calcium hydroxide according to claim 8 for improving specific surface area and activity, wherein: The analysis of the simulated loss of the calcium hydroxide simulation result compared to the simulated optimization target includes: Determining a desired state of the simulation optimization objective; Based on the simulation optimization target, extracting optimization target data of the calcium hydroxide simulation result; Based on the optimization target data, analyzing the current simulation state of the simulation optimization target; Analyzing the simulated loss weight of the simulated optimization objective; Based on the expected state, the current simulation state and the simulation loss weight, the simulation loss of the calcium hydroxide simulation result compared to the simulation optimization target is calculated.

10. A preparation system for increasing specific surface area and activity when processing calcium hydroxide, characterized in that: The system comprises: A carbon-containing raw material processing module, used for obtaining a carbon-containing raw material of calcium oxide, pre-treating the carbon-containing raw material to obtain a processed carbon-containing raw material, pyrolyzing the processed carbon-containing raw material to obtain a pyrolysis gas, wherein the pyrolysis gas includes CO and H2; A pyrolysis gas optimization module is used to construct a selective permeable membrane for the pyrolysis gas, remove impurities from the pyrolysis gas based on the selective permeable membrane to obtain pure pyrolysis gas, and adjust the ratio of CO and H2 corresponding to the pure pyrolysis gas through a preset component ratio optimization model to obtain target pyrolysis gas; A simulation environment construction module, used to determine the simulation optimization target of the calcium oxide, wherein the simulation optimization target includes increasing the specific surface area and increasing the activity, and based on the simulation optimization target, construct an Aspen Plus simulation environment of the calcium oxide and the target pyrolysis gas; A calcium hydroxide simulation module, for analyzing the thermodynamic properties of the target pyrolysis gas using the PR state equation in the Aspen Plus simulation environment, determining the catalyst of the target pyrolysis gas and the calcium oxide, analyzing the catalyst properties of the catalyst, configuring the initial process parameters of the parameter control module corresponding to the Aspen Plus simulation environment based on the thermodynamic properties and the catalyst properties, and reacting the target pyrolysis gas, calcium oxide and the catalyst in a plug flow reactor corresponding to the Aspen Plus simulation environment based on the initial process parameters to obtain a calcium hydroxide simulation result; The process parameter optimization module is used to analyze the simulated loss of the calcium hydroxide simulation result compared to the simulation optimization target, optimize the initial process parameters based on the simulated loss to obtain target process parameters, and based on the target process parameters, use the target pyrolysis gas, calcium oxide and catalyst to react to obtain target calcium hydroxide.

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