Multifunctional calcium-based material hydration activation system and method

Abstract

The invention belongs to the field of industrial calcium circulation desulfurization and decarbonization systems, and particularly relates to a multifunctional calcium-based material hydration activation system and method. The multifunctional calcium-based material hydration activation system comprises a columnar calcium oxide tank and a spherical calcium oxide tank which are connected in parallel, the system is provided with a small calcium oxide material recognizer, a powdery calcium oxide adsorbent enters the columnar calcium oxide tank after recognition, a granular calcium oxide adsorbent enters the spherical calcium oxide tank after recognition, and the system is further provided with a sintering degree detector. The sintering degree of a sintering adsorbent entering the system can be detected in time and fed back to the system, and hydration parameters can be automatically or manually adjusted according to the sintering degree, so that the sintering calcium-based adsorbent entering the system achieves the hydration activation effect to the maximum extent, and the problems of insufficient hydration activation, low efficiency and difficulty in control are effectively solved; and a calcium circulation system is helped to realize continuous and efficient operation, so that the working efficiency of calcium circulation in actual industrial application is improved.

Description

Technical Field

[0001] The invention belongs to the field of industrial calcium circulation desulfurization and decarbonization systems, and in particular relates to a multifunctional calcium-based material hydration activation system and method. Background Art

[0002] In recent years, the extensive use of fossil fuels has caused a sharp rise in the concentration of carbon dioxide in the atmosphere, which has attracted widespread attention from the international community. Therefore, carbon capture and storage technology (CCS) has been proposed to alleviate global warming, wherein carbon capture is a key link. Compared with other carbon dioxide adsorbents, calcium-based adsorbents are cheap and easy to obtain, and have a fast reaction rate. They are adsorbent materials suitable for practical industrial applications, and the calcium cycle capture and separation CO2 system can be separated from flue gas CO2 by capturing via a combined carbonation and calcination cycle. Available lime (CaO) can be used as an adsorbent for carbon dioxide to generate carbonate (CaCO3) of calcium during the so-called carbonation reaction. Subsequently, the generated CaCO3 is regenerated by heating, so that the so-called calcination reaction produces CO2 and CaO.

[0003] However, the adsorption performance of calcium-based adsorbents decreases sharply with the increase in the number of cycles. This is mainly due to the decrease in the specific surface area and pore volume of the adsorbent caused by high-temperature sintering. In order to improve the cyclic performance of calcium-based adsorbents, most of the focus is on modifying the adsorbent structure, such as adding an inert carrier that resists sintering. Although this method effectively improves the adsorption capacity in a short period of time, sintering will still occur in long-term cycles.

[0004] The hydration activation method is simple to operate and has obvious practical effects. However, currently, the hydration activation is mainly carried out directly during the carbonation reaction or calcination reaction, which cannot fully achieve the activation effect of hydration. Summary of the invention

[0005] In view of the problems and shortcomings in the prior art, the purpose of the present invention is to provide a multifunctional calcium-based material hydration activation system and method. This system is used to treat the sintered calcium-based adsorbent produced in the calcium circulation system to fully activate and regenerate it. The system is equipped with a sintering degree detector, which can timely detect the sintering degree of the sintered adsorbent entering the system and feed it back to the system, and can automatically or manually adjust the hydration parameters according to its sintering degree according to the actual situation. The setting parameters include: grinding time, stirring speed, water type, steam concentration, hydration reaction time and temperature, so that the sintered calcium-based adsorbent entering the system can achieve the maximum hydration activation effect, effectively solve the problems of insufficient hydration activation, low efficiency and difficult control, and help the calcium circulation system to achieve continuous and efficient operation, thereby improving the working efficiency of calcium circulation in actual industrial applications.

[0006] Based on the above purpose, the present invention adopts the following technical solution:

[0007] The invention provides a multifunctional calcium-based material hydration activation system, comprising a columnar calcium oxide tank and a spherical calcium oxide tank connected in parallel, a feed port for a powdered calcium oxide adsorbent at the top of the columnar calcium oxide tank and a feed port for a granular calcium oxide adsorbent at the top of the spherical calcium oxide tank are both connected to a system feed port, a two-way element is provided above the system feed port, a sintering degree detector is provided on an inlet pipe of the two-way element, a small calcium oxide material identifier is provided at the system feed port, after the state of the calcium oxide adsorbent is judged by the small calcium oxide material identifier, the powdered calcium oxide adsorbent enters the columnar calcium oxide tank, and the granular calcium oxide adsorbent enters the spherical calcium oxide tank; a discharge port for the powdered calcium oxide adsorbent at the bottom of the columnar calcium oxide tank and a discharge port for the granular calcium oxide adsorbent at the bottom of the spherical calcium oxide tank are both connected to a system discharge port below, and the system discharge port is connected to an inlet of a conveying pump.

[0008] Furthermore, the tap water inlet of the upper columnar calcium oxide tank is also connected to a tap water storage device, the steam inlet of the lower columnar calcium oxide tank is also connected to a steam generating device, a columnar calcium oxide tank temperature controller is provided at the bottom of the columnar calcium oxide tank, a calcium oxide adsorbent powder grinding device is provided on one side of the columnar calcium oxide tank, and a calcium oxide adsorbent powder stirring device is provided on the other side.

[0009] Furthermore, the tap water inlet of the upper spherical calcium oxide tank is also connected to a tap water storage device, the steam inlet of the lower spherical calcium oxide tank is also connected to a steam generating device, a spherical calcium oxide tank temperature controller is provided on the outer surface of the spherical calcium oxide tank, and a centrifugal agitator is provided inside the spherical calcium oxide tank.

[0010] Furthermore, one side of the upper part of the spherical calcium oxide tank is connected to an inert material storage device, and the other side is connected to a cement storage device.

[0011] The present invention also provides a method for hydration activation treatment using the multifunctional calcium-based material hydration activation system, comprising the following steps:

[0012] S1: The sintering degree detector detects the sintering degree of the calcium oxide adsorbent, and controls the outlet of the two-way element according to the detection value of the sintering degree detector;

[0013] S2: When it is detected that the sintering degree of the calcium oxide adsorbent has not reached the system limit, the two-way element is connected to the conveying line of the calcium oxide adsorbent that does not need to be activated, and the calcium oxide adsorbent is sent back to the original system to work; when it is detected that the sintering degree of the calcium oxide adsorbent has reached the system limit, the two-way element is connected to the system feed port of the hydration activation system, and a small calcium oxide material identifier is provided at the system feed port, and the powdered sintered calcium oxide adsorbent is sent to the columnar calcium oxide tank for hydration activation treatment, and the granular sintered calcium oxide adsorbent is sent to the spherical calcium oxide tank for hydration activation treatment;

[0014] S3: The calcium oxide adsorbent that has been hydrated and activated by the two calcium oxide tanks is output to the system discharge port and sent to the engineering application system via the conveyor line.

[0015] Furthermore, in step S2, the hydration activation treatment process of the granular calcium oxide adsorbent in the spherical calcium oxide tank is as follows: the centrifugal agitator centrifugally stirs and rounds the adsorbent, and at the same time, the adsorbent comes into contact with liquid water sprayed from the tap water inlet of the spherical calcium oxide tank or steam emitted from the steam inlet of the spherical calcium oxide tank to produce a hydration reaction at a certain hydration temperature.

[0016] Furthermore, in step S2, the hydration activation treatment process of the powdered calcium oxide adsorbent in the columnar calcium oxide tank is as follows:

[0017] At the same time, the calcium oxide adsorbent is stirred and ground, and comes into contact with liquid water or steam entering the columnar calcium oxide tank to undergo a hydration reaction.

[0018] Furthermore, the spherical feeding process is as follows: when the granular calcium oxide adsorbent enters the spherical calcium oxide tank and is stirred in the centrifugal stirring device and contacts with water molecules, the system evenly sprinkles the inert material in the inert material storage device and the cement in the cement storage device onto the stirred granular calcium oxide adsorbent for rotation and spherical feeding.

[0019] Furthermore, when the detection value of the sintering degree detector is greater than or equal to 50%, it is judged that hydration is required, 100% to 80% is severe sintering, 80% to 60% is moderate sintering, and 60% to 50% is light sintering.

[0020] Furthermore, the sintering degree detector determines the sintering degree of the adsorbent and feeds back to the system. The corresponding hydration program can be selected based on the feedback value, and the hydration temperature, grinding time, stirring speed, water flow type, water vapor concentration, and hydration time can be intelligently set accordingly. It can also be set by itself according to actual conditions.

[0021] Furthermore, the above feedback value is the sintering degree of the adsorbent entering the system. According to different sintering degrees, the system can determine whether it needs to enter the system for hydration activation treatment, and flexibly set the optimal activation parameters automatically or manually.

[0022] Furthermore, the hydration activation treatment conditions of the powdered calcium oxide adsorbent in a columnar calcium oxide tank are as follows: for lightly sintered adsorbent, the hydration temperature is 200°C, the grinding time is 5 minutes, and liquid water is used; for moderately sintered adsorbent, the hydration temperature is 250°C, the grinding time is 7 minutes, and the steam concentration is 70%; for heavily sintered adsorbent, the hydration temperature is 300°C, the grinding time is 10 minutes, and the steam concentration is 80%.

[0023] Furthermore, the hydration activation treatment conditions of the granular calcium oxide adsorbent in the spherical calcium oxide tank are as follows: for lightly sintered granular adsorbent, the hydration temperature is 200°C, the spheronization time is 3 minutes, and liquid water is selected; for moderately sintered adsorbent, the hydration temperature is 250°C, the spheronization time is 4 minutes, and the steam concentration is 90%; for heavily sintered adsorbent, the hydration temperature is 300°C, the spheronization time is 5 minutes, and the steam concentration is 100%.

[0024] Working principle of the present invention:

[0025] The multifunctional calcium-based material hydration activation system of the present invention comprises a steam generating device, a liquid water outlet device, different grinding and stirring devices, and equipment hydration parameter settings. Among them, calcium hydroxide (Ca(OH)2) is mainly generated by contact between water vapor / liquid water (H2O) and sintered calcium oxide (CaO) adsorbent for hydration activation treatment. The invention design of the grinding and stirring device is derived from the research on the mechanism of calcium oxide hydration reaction. Grinding can destroy the agglomeration of grains of the sintered adsorbent caused by sintering and make the grains smaller, so that more surface CaO molecules can contact with water molecules, effectively improving the reaction effect and efficiency of the surface rapid reaction stage, resulting in more pores on the surface, and more water molecules enter the sintered calcium-based adsorbent faster during the stirring process for hydration activation reaction.

[0026] The main reaction occurring in the multifunctional calcium-based material hydration activation system of the present invention is: CaO+H2O→Ca(OH)2; the hydration activation mechanism of the calcium oxide adsorbent is that the hydration reaction is divided into two stages: the first is the surface rapid reaction stage, in which water molecules react with calcium oxide molecules on the surface of the adsorbent to generate calcium hydroxide, and the second is the diffusion reaction stage, in which water molecules enter the interior of the adsorbent along the pore structure generated by the generation of calcium hydroxide on the surface of the first stage to perform hydration reaction with the internal calcium oxide molecules, so that the adsorbent generates abundant pores to achieve the purpose of activation. The grinder in the columnar calcium oxide tank and the centrifuge in the spherical calcium oxide tank can effectively break the crystal agglomeration phenomenon caused by sintering, increase the specific surface area of ​​the adsorbent particles, promote the rapid and sufficient hydration reaction in the first stage, increase the porosity, and provide more channels for water molecules in the second stage to enter the interior of the sintered adsorbent; the agitator and the centrifuge can both promote the rapid and uniform contact of water molecules with calcium oxide molecules, and both the first and second stage hydration reactions have the effects of promoting, accelerating the reaction rate and activation.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] 1. The present invention combines intelligent feedback equipment to detect and feedback the sintering condition of the adsorbent entering the system. According to the feedback value, the hydration activation parameters with the best effect, highest efficiency and lowest energy consumption can be quickly set. It can be automatic or manual with high intelligence and good universality. Compared with single hydration treatment, it is more efficient and intelligent, and the activation effect is better.

[0029] 2. The multifunctional calcium-based material hydration activation system of the present invention is provided with corresponding devices for promoting the degree of hydration for different adsorbent types. The granular adsorbent enters the spherical calcium oxide centrifugal stirring device, and the powdered adsorbent enters the columnar calcium oxide grinding and stirring device.

[0030] 3. This hydration activation system can be used in any field where calcium recycling is used. The calcium-based adsorbent fully activated in this system can be re-applied to multiple fields where calcium recycling is available, such as industrial waste gas desulfurization and decarbonization, and energy storage.

[0031] 4. The multifunctional calcium-based material hydration activation system of the present invention adopts different grinding methods for sintered adsorbents in different states entering the system. Grinding is a means to enhance the activation effect of sintering. Adsorbent sintering is a structural change at the microscopic level. Regardless of the form of the adsorbent, grinding helps to break up and separate the grain structure that sticks together. Since the powdered adsorbent can be directly ground without being affected by shape changes and compressive strength, the granular adsorbent itself needs to consider the change in its compressive strength. Therefore, the design adopts ball milling, which can enhance the activation effect without destroying its own strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1This is a schematic diagram of the hydration activation system of the multifunctional calcium-based material of the present invention;

[0033] Figure 2 This is a structural diagram of the hydration reaction equipment of the spherical calcium oxide tank of the present invention;

[0034] Figure 3 This is a structural diagram of the columnar calcium oxide tank hydration reaction equipment of the present invention;

[0035] In the figure, 1-sintering degree detector, 2-two-way element, 2.1-calcium oxide adsorbent conveying line that does not require activation, 3-system feed port, 4-tap water storage, 5-columnar calcium oxide tank, 5.1-feed port for powdered calcium oxide adsorbent, 5.2-calcium oxide adsorbent powder grinding device, 5.3-calcium oxide adsorbent powder stirring device, 5.4-columnar calcium oxide tank temperature controller, 5.5-discharge port for powdered calcium oxide adsorbent, 5.6-tap water inlet of columnar calcium oxide tank, 5.7-columnar Steam inlet of calcium oxide tank, 6-spherical calcium oxide tank, 6.1-feeding port of granular calcium oxide adsorbent, 6.2-inert material storage device, 6.3-cement storage device, 6.4-tap water inlet of spherical calcium oxide tank, 6.5-temperature controller of spherical calcium oxide tank, 6.6-centrifugal agitator, 6.7-discharging port of granular calcium oxide adsorbent, 6.8-steam inlet of spherical calcium oxide tank, 7-steam generating device, 8-system discharging port, 9-delivery pump, 9.1-delivery line of activated calcium oxide adsorbent. DETAILED DESCRIPTION

[0036] Example 1

[0037] The system of this embodiment includes a carbonation reaction system, a multifunctional calcium-based material hydration activation system and a calcination reaction system, forming a new calcium circulation system.

[0038] A multifunctional calcium-based material hydration activation system, see Figure 1 , including a columnar calcium oxide tank 5, a feed port 5.1 of a powdered calcium oxide adsorbent at the top of the columnar calcium oxide tank 5 is connected to a system feed port 3, a discharge port 5.5 of a powdered calcium oxide adsorbent at the bottom of the columnar calcium oxide tank 5 is connected to a system discharge port 8 below, the system discharge port 8 is connected to an inlet of a delivery pump 9, an output port of the delivery pump 9 is connected to another part of a pipe section of an activated calcium oxide adsorbent delivery line 9.1 with a valve group through a valve group, a calcination reaction system is connected to a feed port 3 of a multifunctional calcium-based material hydration activation system, and a system discharge port 8 is connected to a carbonation reaction system; sintered adsorbent from the calcination reaction system enters the system from a hydration system feed port 3 through a delivery pipe due to high temperature, undergoes hydration activation treatment, and after completion, is connected to a solid calcium oxide supply pipeline connected to a carbonation reactor of the carbonation reaction system to form a calcium oxide activation reflux pipeline.

[0039] Among them, the tap water inlet 5.6 of the upper columnar calcium oxide tank 5 in the multifunctional calcium-based material hydration activation system is also connected to the tap water storage device 4, the steam inlet 5.7 of the lower columnar calcium oxide tank 5 is also connected to the steam generating device 7, a columnar calcium oxide tank temperature controller 5.4 is provided at the bottom of the columnar calcium oxide tank 5, a calcium oxide adsorbent powder grinding device 5.2 is provided on one side of the columnar calcium oxide tank, and a calcium oxide adsorbent powder stirring device 5.3 is provided on the other side.

[0040] The carbonation reaction system includes a carbonation reactor, the upper part of which is connected to a flue gas flow inlet pipe and a solid calcium oxide supply pipeline, the lower part of which is connected to an output pipe, and an outlet is connected to a system feed port 3 of a multifunctional calcium-based material hydration activation system along a conveying line.

[0041] The calcination reaction system includes a calcination reactor, an upper feed pipe of the calcination reactor is connected to a feed port coming out of a carbonation reactor, a lower part of the carbonation reactor is connected to a regenerated calcium oxide output pipe, a second delivery pump is connected to the output pipe, an output port of the second delivery pump is connected to another part of a delivery pipeline with a valve group through a valve group, and then is connected to a solid calcium oxide supply pipeline connected to the carbonation reactor of the carbonation reaction system to form a calcium oxide regeneration reflux pipeline.

[0042] The experiment was conducted on sintered CaO powder using the hydration activation process of the present invention, and the results are as follows:

[0043] Table 1 Comparison of sintered CaO powder before and after hydration treatment

[0044]

[0045] It can be found from Table 1 that in this embodiment, pure calcium oxide adsorbent is subjected to cyclic carbon capture. After passing through the hydration reaction system, the specific surface area and porosity are greatly increased, the hydration modification of calcium oxide is achieved, and the carbon capture capacity and cycle efficiency of the adsorbent are significantly increased; the resource utilization rate is improved, the cost of purchasing the adsorbent is reduced, and the environmental protection cost is significantly reduced, achieving the comprehensive benefits of energy saving, consumption reduction and emission reduction.

[0046] Example 2

[0047] The content of a multifunctional calcium-based material hydration and activation system is basically the same as that of Example 1, except that a two-way element 2 is provided above the feed port 3 of the multifunctional calcium-based material hydration and activation system, and a sintering degree detector 1 is provided on the inlet pipe of the two-way element. The outlet of the two-way element 2 is controlled according to the detection value of the adsorbent sintering degree detector 1, one outlet is directly connected to the feed port of the carbonation reactor of the carbonation reaction system along a calcium oxide adsorbent conveying line 2.1 that does not require activation, and the other outlet is connected to the feed port 3 of the multifunctional calcium-based material hydration and activation system through a conveying line to enter the system for hydration activation treatment.

[0048] The detection principle of the sintering degree detector 1 is to randomly sample the adsorbent to be introduced into the system and perform CO2 adsorption detection. The detection time is 5 minutes, and the carbon adsorption rate is used as an indicator to judge the sintering degree. If the hydration activation system is connected with the carbonation reaction system and the calcination reaction system, the sintering degree detector 1 can also be directly installed at the discharge port of the carbonation reactor to directly sample and perform carbon adsorption rate detection. The detection time is about 10-15 minutes.

[0049] When the test result shows that the CO2 adsorption rate is greater than 17%, the two-way element 2 above the feed port 3 of the hydration activation system is connected to the transmission line pipeline of the carbonation feed port of the carbonation reaction system, and the carbonation reaction system is operated at a temperature at which CaCO3 is decomposed into CaO and CO2 to generate CaCO3. The solid calcium oxide CaO adsorbent regenerated from the calcination reactor is directly connected to the feed port of the carbonation reactor of the carbonation reaction system along the transmission line via a delivery pump, thereby realizing the adsorbent regeneration cycle.

[0050] When the detection result shows that the CO2 adsorption rate is less than 17%, the two-way element 2 is connected to the feed port 3 of the hydration activation system, enters the hydration activation system and undergoes hydration activation treatment in the corresponding calcium oxide tank, and the hydration activation reaction parameter setting is intelligently adjusted according to the sintering degree fed back to the system by the sintering degree detector 1.

[0051] The feedback value is that if the sintering degree is greater than or equal to 50%, it is judged that hydration is required, 100%-80% is heavy sintering, 80%-60% is medium sintering, and 60%-50% is light sintering.

[0052] Several groups of comparative tests were conducted on calcium oxide powder samples with different sintering degrees according to the hydration program settings of the present invention for reference, which can also be set according to actual conditions. The stirring speed involved in the test was 100 rad / min.

[0053] A hydration activation treatment test was conducted on a lightly sintered calcium oxide powder adsorbent sample with a CO2 adsorption rate of 15.3% according to the hydration program setting of the present invention. The results are shown in Table 2.

[0054] Table 2 Test table of lightly sintered calcium oxide powder adsorbent

[0055]

[0056] The hydration activation treatment test was carried out on the moderately sintered calcium oxide powder adsorbent sample with a CO2 adsorption rate of 8% according to the hydration program setting of the present invention, see Table 3.

[0057] Table 3 Test table of medium sintered calcium oxide powder adsorbent

[0058]

[0059] The heavily sintered calcium oxide powder adsorbent sample with a CO2 adsorption rate of 5.8% was subjected to a hydration activation treatment test according to the hydration procedure of the present invention, as shown in Table 4.

[0060] Table 4 Heavy sintered calcium oxide powder adsorbent test table

[0061]

[0062] It can be found from Tables 2-4 that the hydration program settings corresponding to the different sintering degrees are: for lightly sintered adsorbents, the hydration temperature is 200°C, the grinding time is 5 minutes, and liquid water is selected; for moderately sintered adsorbents, the hydration temperature is 250°C, the grinding time is 7 minutes, and the steam concentration is 70%; for heavily sintered adsorbents, the hydration temperature is 300°C, the grinding time is 10 minutes, and the steam concentration is 80%.

[0063] The present embodiment performs activation treatment on the modified calcium-based adsorbent. The modified adsorbent, such as the calcium-based adsorbent with added inert materials, has a more stable structure and abundant pores. The good cycle adsorption effect can be maintained for a longer time. At this time, there is no need to perform hydration activation treatment for each cycle, which can increase the cycle efficiency and save time. The intelligent sintering degree detection and feedback equipment monitors the sintering degree of the adsorbent in real time, and immediately sets the optimal hydration activation program according to the sintering degree feedback value after sintering occurs, thereby achieving effective superposition of multiple activation methods and efficient operation at all times. The activation process is efficient and effective, saves water resources, and is efficient and environmentally friendly.

[0064] Example 3

[0065] The content of a multifunctional calcium-based material hydration activation system is basically the same as that of Example 1, except that the multifunctional calcium-based material hydration activation system includes two hydration reaction devices connected in parallel, namely a columnar calcium oxide tank 5 and a spherical calcium oxide tank 6. Figure 2 and Figure 3A small calcium oxide material identifier is provided at the system feed port 3. After the state of the calcium oxide adsorbent is judged by the small calcium oxide material identifier, the powdered calcium oxide adsorbent enters the columnar calcium oxide tank 5, and the granular calcium oxide adsorbent enters the spherical calcium oxide tank 6.

[0066] The top of the spherical calcium oxide tank 6 is provided with a feed port 6.1 for a granular calcium oxide adsorbent, and the bottom is provided with a discharge port 6.7 for the granular calcium oxide adsorbent. The tap water inlet 6.4 of the upper part of the spherical calcium oxide tank 6 is also connected to the tap water storage 4, and the steam inlet 6.8 of the lower part of the spherical calcium oxide tank 6 is also connected to the steam generating device 7. The outer surface of the spherical calcium oxide tank body is provided with a spherical calcium oxide tank temperature controller 6.5. The inside of the spherical calcium oxide tank 6 is provided with a centrifugal stirrer 6.6. One side of the upper part of the spherical calcium oxide tank 6 is also connected to an inert material storage 6.2, and the other side is also connected to a cement storage 6.3.

[0067] The tap water inlet 5.6 of the upper columnar calcium oxide tank 5 is also connected to the tap water storage device 4, and the steam inlet 5.7 of the lower columnar calcium oxide tank 5 is also connected to the steam generating device 7. A columnar calcium oxide tank temperature controller 5.4 is provided at the bottom of the columnar calcium oxide tank 5. A calcium oxide adsorbent powder grinding device 5.2 is provided on one side of the columnar calcium oxide tank 5, and a calcium oxide adsorbent powder stirring device 5.3 is provided on the other side.

[0068] A method for hydration activation treatment of a multifunctional calcium-based material hydration activation system, comprising the following steps:

[0069] S1: The sintering degree detector 1 detects the sintering degree of the calcium oxide adsorbent, and controls the outlet of the two-way element 2 according to the detection value of the sintering degree detector 1;

[0070] S2: When the sintering degree of the calcium oxide adsorbent is detected to have reached the system limit, the two-way element 2 is connected to the system feed port 3 of the hydration activation system, and a small calcium oxide material identifier is provided at the system feed port 3. The powdered sintered calcium oxide adsorbent is sent into the columnar calcium oxide tank for hydration activation treatment, and the granular sintered calcium oxide adsorbent is sent into the spherical calcium oxide tank for hydration activation treatment; when the granular calcium oxide adsorbent enters the spherical calcium oxide tank 6, it is stirred by the centrifugal stirring device 6.6 and simultaneously enters the spherical calcium oxide tank with the steam emitted from the steam inlet 6.8 or the tap water of the spherical calcium oxide tank. The liquid water sprayed from the water inlet 6.4 contacts and reacts, and in the reaction, the cement in the cement storage 6.3 for maintaining the mechanical properties of the particles and the inert material in the inert material storage 6.2 for maintaining the chemical properties required by the granular adsorbent can be replenished; when the powdered calcium oxide adsorbent enters the columnar calcium oxide tank 5, the calcium oxide adsorbent powder stirring device 5.3 and the calcium oxide adsorbent powder grinding device 5.2 are running at the same time, and the powdered calcium oxide adsorbent contacts and reacts with the steam emitted from the steam inlet 5.7 of the columnar calcium oxide tank or the liquid water sprayed from the tap water inlet 5.6 of the columnar calcium oxide tank.

[0071] S3: The adsorbent after hydration and activation treatment in two calcium oxide tanks is output to the system discharge port 8, and the activated calcium oxide adsorbent conveying line 9.1 is sent to the engineering application system.

[0072] Several groups of comparative tests were conducted on calcium oxide particle samples with different sintering degrees according to the hydration program of the present invention for reference, which can also be set according to actual conditions. The spheronization speed involved in the test was 300 rad / min.

[0073] The CO2 adsorption rate of 16.2% and the slightly sintered calcium oxide particle adsorbent sample were subjected to a hydration activation treatment test according to the hydration program of the present invention. The results are shown in Table 5.

[0074] Table 5 Test table of lightly sintered calcium oxide granular adsorbent

[0075]

[0076] The CO2 adsorption rate of 8% and the moderately sintered calcium oxide granular adsorbent sample were subjected to a hydration activation treatment test according to the hydration program setting of the present invention. The results are shown in Table 6.

[0077] Table 6 Test table of medium sintered calcium oxide granular adsorbent

[0078]

[0079] The heavily sintered calcium oxide granular adsorbent sample with a CO2 adsorption rate of 6.7% was subjected to a hydration activation treatment test according to the hydration procedure of the present invention. The results are shown in Table 7.

[0080] Table 7 Heavy sintered calcium oxide granular adsorbent test table

[0081]

[0082] It can be found from Tables 5-7 that the hydration program settings corresponding to the different sintering degrees are: for lightly sintered granular adsorbent, the hydration temperature is 200°C, the spheronization time is 3 minutes, and liquid water is selected; for moderately sintered adsorbent, the hydration temperature is 250°C, the spheronization time is 4 minutes, and the steam concentration is 90%; for heavily sintered adsorbent, the hydration temperature is 300°C, the spheronization time is 5 minutes, and the steam concentration is 100%.

[0083] This embodiment expands the user objects of the system, making it more widely applicable, and adding a feeding step during the hydration process of the granular adsorbent solves the problem of deterioration of the mechanical properties of the adsorbent due to hydration activation, and well maintains the chemical properties of the adsorbent.

Claims

1. A multifunctional calcium-based material hydration activation system, characterized in that: It comprises a columnar calcium oxide tank and a spherical calcium oxide tank connected in parallel, a feed port for a powdered calcium oxide adsorbent at the top of the columnar calcium oxide tank and a feed port for a granular calcium oxide adsorbent at the top of the spherical calcium oxide tank are both connected to a system feed port, a two-way element is arranged above the system feed port, a sintering degree detector is arranged on the inlet pipe of the two-way element, a small calcium oxide material identifier is arranged at the system feed port, after the state of the calcium oxide adsorbent is judged by the small calcium oxide material identifier, the powdered calcium oxide adsorbent enters the columnar calcium oxide tank and the granular calcium oxide adsorbent enters the spherical calcium oxide tank; a discharge port for the powdered calcium oxide adsorbent at the bottom of the columnar calcium oxide tank and a discharge port for the granular calcium oxide adsorbent at the bottom of the spherical calcium oxide tank are both connected to a system discharge port below, and the system discharge port is connected to an inlet of a conveying pump.

2. The multifunctional calcium-based material hydration activation system according to claim 1, characterized in that: The tap water inlet of the upper columnar calcium oxide tank is also connected to a tap water storage device, the steam inlet of the lower columnar calcium oxide tank is also connected to a steam generating device, a columnar calcium oxide tank temperature controller is provided at the bottom of the columnar calcium oxide tank, a calcium oxide adsorbent powder grinding device is provided on one side of the columnar calcium oxide tank, and a calcium oxide adsorbent powder stirring device is provided on the other side.

3. The multifunctional calcium-based material hydration activation system according to claim 1, characterized in that: The tap water inlet of the upper part of the spherical calcium oxide tank is also connected to a tap water storage device, the steam inlet of the lower part of the spherical calcium oxide tank is also connected to a steam generating device, a spherical calcium oxide tank temperature controller is provided on the outer surface of the spherical calcium oxide tank, and a centrifugal agitator is provided inside the spherical calcium oxide tank; one side of the upper part of the spherical calcium oxide tank is connected to an inert material storage device, and the other side is connected to a cement storage device.

4. A method for hydration activation treatment using the multifunctional calcium-based material hydration activation system according to any one of claims 1 to 3, characterized in that: The steps include: S1: The sintering degree detector detects the sintering degree of the calcium oxide adsorbent, and controls the outlet of the two-way element according to the detection value of the sintering degree detector; S2: When it is detected that the sintering degree of the calcium oxide adsorbent has not reached the system limit, the two-way element is connected to the conveying line of the calcium oxide adsorbent that does not need to be activated, and the calcium oxide adsorbent is sent back to the original system to work; when it is detected that the sintering degree of the calcium oxide adsorbent has reached the system limit, the two-way element is connected to the system feed port of the hydration activation system, and a small calcium oxide material identifier is provided at the system feed port, and the powdered sintered calcium oxide adsorbent is sent to the columnar calcium oxide tank for hydration activation treatment, and the granular sintered calcium oxide adsorbent is sent to the spherical calcium oxide tank for hydration activation treatment; S3: The calcium oxide adsorbent that has been hydrated and activated by the two calcium oxide tanks is output to the system discharge port and sent to the engineering application system via the conveyor line.

5. The method according to claim 4, characterized in that The hydration activation process of the granular calcium oxide adsorbent in the spherical calcium oxide tank in step S2 is as follows: the adsorbent is centrifugally stirred and spheronized by a centrifugal agitator, and at the same time, it contacts with liquid water sprayed from the tap water inlet of the spherical calcium oxide tank or steam emitted from the steam inlet of the spherical calcium oxide tank to generate a hydration reaction at a certain hydration temperature.

6. The method according to claim 5, characterized in that The hydration activation treatment process of the powdered calcium oxide adsorbent in the columnar calcium oxide tank in step S2 is: stirring and grinding the calcium oxide adsorbent at the same time, and contacting with liquid water or steam entering the columnar calcium oxide tank to generate a hydration reaction.

7. The method according to claim 6, characterized in that The spherical feeding process is as follows: when the granular calcium oxide adsorbent enters the spherical calcium oxide tank and is stirred in the centrifugal stirring device and contacts with water molecules, the system evenly sprinkles the inert material in the inert material storage device and the cement in the cement storage device onto the stirred granular calcium oxide adsorbent for rotation and spherical feeding.

8. The method according to claim 7, characterized in that: When the detection value of the sintering degree detector is greater than or equal to 50%, it is judged that hydration is required, 100% to 80% is severe sintering, 80% to 60% is moderate sintering, and 60% to 50% is light sintering.

9. The method according to claim 8, characterized in that: The hydration activation treatment conditions of the powdered calcium oxide adsorbent in the columnar calcium oxide tank are as follows: for lightly sintered adsorbent, the hydration temperature is 200°C, the grinding time is 5 minutes, and liquid water is selected; for moderately sintered adsorbent, the hydration temperature is 250°C, the grinding time is 7 minutes, and the steam concentration is 70%; for heavily sintered adsorbent, the hydration temperature is 300°C, the grinding time is 10 minutes, and the steam concentration is 80%.

10. The method according to claim 9, characterized in that: The hydration activation treatment conditions of the granular calcium oxide adsorbent in the spherical calcium oxide tank are as follows: for lightly sintered granular adsorbent, the hydration temperature is 200°C, the spheronization time is 3 minutes, and liquid water is selected; for moderately sintered adsorbent, the hydration temperature is 250°C, the spheronization time is 4 minutes, and the steam concentration is 90%; for heavily sintered adsorbent, the hydration temperature is 300°C, the spheronization time is 5 minutes, and the steam concentration is 100%.

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