Solid-liquid-gas interface mass transfer equipment and method

Abstract

The present invention relates to a solid-liquid-gas interface mass transfer device and method thereof. The solid-liquid-gas interface mass transfer device includes a pretreatment device for the material to be treated, a pre-storage tank for the material to be treated, a gas and pressure control device, a pulse pressure control valve, a reaction tank for the material to be treated, and a gas-liquid mixing device; the solid-liquid-gas interface mass transfer method includes the following steps: S1. Pretreatment step of the material to be treated; S2. Pre-storage step of the material to be treated; S3. Collision and blasting step; S4. Reaction step of the material to be treated; S5. Finished product completion step; Thus, the material to be treated in solid or gas form can collide with the nano-bubble liquid under the physical action of high pressure and high speed, and with the instantaneous blasting generated when the nano-bubble liquid bubbles burst, the material to be treated can fully carry out chemical reactions, achieving the effect of heterogeneous interface mass transfer.

Description

Technical Field

[0001] The present invention relates to a heterogeneous treatment device, and particularly to a mass transfer device and method for a solid-liquid-gas heterogeneous interface. Background Art

[0002] The materials to be treated generated by general industries often need to be chemically treated to meet the required requirements, such as removing toxic chemicals or changing their chemical composition or molecular structure, etc. However, their chemical treatment equipment is often bulky, costly, or prone to causing secondary pollution.

[0003] For example, the materials to be treated generated after steelmaking contain unstable components, including free calcium oxide (Free-CaO), free magnesium oxide (Free-MgO), calcium hydroxide (Ca(OH)2), magnesium hydroxide (Mg(OH)2), etc. Therefore, proper stabilization treatment is required to make them feasible for application. Otherwise, it is easy to cause problems such as high alkalinity and swelling, resulting in serious industrial safety problems such as expansion and rupture or foundation loosening. There are various stabilization treatment methods, such as the natural weathering method, where the materials to be treated are piled outdoors and hydrated reactions are generated by water vapor and carbon dioxide in the atmosphere. Although this can eliminate the need for treatment equipment, the required stabilization time is relatively long, a large treatment area is needed, and it is easy to cause dust, resulting in environmental pollution. To improve the above disadvantages, the industry currently uses the common steaming method. Although it does not cause environmental pollution, it requires a large amount of energy due to the high-temperature and high-pressure environment, and its equipment is large and difficult to maintain. The treatment time is also too long and lacks efficiency. In addition, there are still concerns about the generation of secondary industrial waste such as wastewater and waste gas.

[0004] Therefore, after observing the above disadvantages, the inventor of this case believes that there is still a need for further improvement, and thus this invention is created. Summary of the Invention

[0005] The object of the present invention is to provide a mass transfer device and method for a solid-liquid-gas interface. Through this treatment device and treatment method, the materials to be treated in solid or gas form can be fully reacted under the action of nano-bubble liquid, achieving the effect of mass transfer at the heterogeneous interface.

[0006] To achieve the above object, the solid-liquid-gas interface mass transfer device provided by the present invention includes a pretreatment device for the material to be processed, which has a feeding port above it, and the material to be processed in the form of solid or gas can be fed into the pretreatment device for pretreatment. A pre-storage tank for the material to be processed is connected below the pretreatment device for the material to be processed, and the material to be processed by the pretreatment device for the material to be processed can be pre-stored first. A gas and pressure control device is connected to the pre-storage tank for the material to be processed, which can generate high-pressure gas and send the high-pressure gas into the pre-storage tank for the material to be processed. A pulse pressure control valve is connected below the pre-storage tank for the material to be processed, and the material to be processed in the pre-storage tank for the material to be processed can be instantaneously sent out through the high-pressure gas. A reaction tank for the material to be processed is connected below the pulse pressure control valve, and can receive the material to be processed ejected instantaneously under high pressure by the pulse pressure control valve. In addition, a finished product output valve is connected below the reaction tank for the material to be processed. A gas-liquid mixing device is connected to the reaction tank for the material to be processed, which can mix gas and liquid into nano-bubble liquid and send the nano-bubble liquid into the reaction tank for the material to be processed, so that the material to be processed ejected instantaneously under high pressure can fully react with the nano-bubble liquid in the reaction tank for the material to be processed.

[0007] Further, a pressure pump is provided between the gas and pressure control device and the pre-storage tank for the material to be processed.

[0008] To achieve the above object, the solid-liquid-gas interface mass transfer method provided by the present invention includes the following steps: 1. Pretreatment step of the material to be processed: feeding the solid or gas material to be processed into a pretreatment device for the material to be processed for pretreatment; 2. Pre-storage step of the material to be processed: placing the material to be processed into a pre-storage tank for the material to be processed filled with high-pressure gas; 3. Collision and blasting step: performing multiple instantaneous opening and closing actions with a pulse pressure control valve, and spraying the material to be processed in the pre-storage tank for the material to be processed into a reaction tank for the material to be processed with nano-bubble liquid in a high-pressure and high-speed impact manner for mixing; 4. Reaction step of the material to be processed: causing a chemical reaction between the material to be processed in the reaction tank for the material to be processed and the nano-bubble liquid, and further causing a heterogeneous mass transfer change between the material to be processed and the nano-bubble liquid; 5. Finished product completion step: discharging the reacted material to be processed through a finished product output valve installed below the reaction tank for the material to be processed, and thus obtaining the finished product.

[0009] Further, in the pretreatment step of the material to be processed, if the material to be processed is a solid, the pretreatment device for the material to be processed can crush and screen the solid; if the material to be processed is a gas, the pretreatment device for the material to be processed can filter the gas and remove impurities.

[0010] Further, in the pre-storage step of the material to be processed, the pre-storage tank for the material to be processed is connected with a gas and pressure control device to provide high-pressure gas to the pre-storage tank for the material to be processed.

[0011] Further, in the reaction step of the material to be processed, the reaction tank for the material to be processed is connected with a gas-liquid mixing device to provide a nano-bubble liquid to the reaction tank for the material to be processed.

[0012] Further, in the collision and blasting step, the pressure in the pre-storage tank for the material to be processed is greater than the pressure in the reaction tank for the material to be processed.

[0013] Further, the pressure of the pre-storage tank for the material to be processed is 7 kg / cm 3 ~15 kg / cm 3 , while the pressure of the reaction tank for the material to be processed is 6 kg / cm 3 ~12 kg / cm 3 .

[0014] Thus, the materials to be processed can collide with each other under the physical action of high pressure and high speed, and with the blasting action instantaneously generated when the nano-bubble liquid bubbles burst, enabling the materials to be processed to fully react and achieving the effect of mass transfer at the heterogeneous interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the equipment of a preferred embodiment of the present invention.

[0016] Figure 2 It is a flowchart of the method of the above-mentioned preferred embodiment of the present invention.

[0017] Figure 3 It is a nano-bubble size concentration distribution diagram of the above-mentioned preferred embodiment of the present invention.

[0018] MAIN ELEMENT SYMBOL DESCRIPTION:

[0019] 20 Material to be processed pretreatment device

[0020] 21 Feed inlet

[0021] 30 Pre-storage tank for the material to be processed

[0022] 40 Gas and pressure control device

[0023] 41 Pressure pump

[0024] 50 Pulse pressure control valve

[0025] 60 Reaction tank for the material to be processed

[0026] 61 Finished product output valve

[0027] 62 Finished product storage tank

[0028] 70 Gas-liquid mixing device

[0029] 71 Pressure pump

[0030] 72 Gas pipeline

[0031] 73 Liquid pipeline

[0032] 80 Time-domain pulse controller Detailed implementation manners

[0033] Please refer to Figure 1 as shown in the figure, which is a schematic diagram of a solid-liquid-gas interface mass transfer device provided by a preferred embodiment of the present invention, and it includes:

[0034] A pretreatment device 20 for the material to be processed, which has a feeding port 21 above it, so that the solid or gas material to be processed can be fed into the pretreatment device 20 through the feeding port 21 for pretreatment. If the material to be processed is solid, the pretreatment device 20 can crush and screen the solid; if the material to be processed is gas, the pretreatment device 20 can filter and remove impurities from the gas.

[0035] A pre-storage tank 30 for the material to be processed, which is connected below the pretreatment device 20 for the material to be processed, and the material to be processed pretreated by the pretreatment device 20 for the material to be processed can be pre-stored in the pre-storage tank 30 for the material to be processed and controlled at a predetermined quantity. Moreover, a one-way valve (not shown in the figure) can be designed between the pre-storage tank 30 for the material to be processed and the pretreatment device 20 for the material to be processed to make the pre-storage tank 30 for the material to be processed airtight.

[0036] A gas and pressure control device 40, which is connected to the pre-storage tank 30 for the material to be processed, and a pressure pump 41 is further provided between the gas and pressure control device 40 and the pre-storage tank 30 for the material to be processed. It can generate high-pressure gas and send the high-pressure gas into the pre-storage tank 30 for the material to be processed, so as to form a predetermined pressure in the pre-storage tank 30 for the material to be processed. In a preferred embodiment of the present invention, the high-pressure gas can be selected from any one of N2, O2, CO2, O3 or clean air, etc., and the pressure formed in the pre-storage tank 30 for the material to be processed is about 7-15 kg / cm 3 .

[0037] A pulse pressure control valve 50, which is connected below the pre-storage tank 30 for the material to be processed. The pulse pressure control valve 50 is connected with a time-domain pulse controller 80, and the material to be processed in the pre-storage tank 30 for the material to be processed can be sent out instantaneously in a high-pressure and high-speed manner through the pulse pressure control valve 50.

[0038] A reaction tank 60 for the material to be processed, which is connected below the pulse pressure control valve 50, can receive the material to be processed ejected instantaneously at high pressure and high speed by the pulse pressure control valve 50. In addition, a finished product output valve 61 is connected below the reaction tank 60 for the material to be processed, and a finished product storage tank 62 is provided below the finished product output valve 61 for storing the finished product of the material to be processed after the reaction.

[0039] A gas-liquid mixing device 70 is connected to the reaction tank 60 for the material to be treated, and a pressure pump 71 is also provided between the gas-liquid mixing device 70 and the reaction tank 60 for the material to be treated. The gas-liquid mixing device 70 is respectively connected to a gas pipeline 72 and a liquid pipeline 73, and can mix gas and liquid into nano-bubble liquid, and then send the nano-bubble liquid into the reaction tank 60 for the material to be treated through the pressure pump 71. In addition to forming a predetermined pressure in the reaction tank 60 for the material to be treated, the material to be treated ejected instantaneously under high pressure can fully react with the nano-bubble liquid in the reaction tank 60 for the material to be treated, and the pressure in the pre-storage tank 30 for the material to be treated must be greater than the pressure in the reaction tank 60 for the material to be treated.

[0040] Please refer to Figure 2 As shown, the solid-liquid-gas interface mass transfer method provided by the above-mentioned preferred embodiment of the present invention includes the following steps:

[0041] S1. Feeding step of the material to be treated; feeding the material to be treated into the pretreatment device 20 for the material to be treated for pretreatment. In this embodiment, the material to be treated is taken as the steelmaking slag solid as an example. Therefore, the material to be treated is crushed and screened in the pretreatment device 20 for the material to be treated, and impurities are removed by pretreatment, so that the diameter of the pretreated slag is between 0.1 and 1.3 mm.

[0042] S2. Pre-storage step of the material to be treated: placing the pretreated material to be treated into a pre-storage tank 30 for the material to be treated filled with high-pressure gas. In the preferred embodiment of the present invention, the high-pressure gas can be any one of N2, O2, CO2, O3 or clean air, etc., and the pressure formed in the pre-storage tank 30 for the material to be treated is about 7-15 kg / cm 3 .

[0043] S3. Collision and blasting step: using a pulse pressure control valve 50 to perform multiple instantaneous opening and closing actions, so that the material to be treated in the pre-storage tank 30 for the material to be treated is sprayed into the reaction tank 60 for the material to be treated in a high-pressure and high-speed impact manner. The reaction tank 60 for the material to be treated contains nano-bubble liquid, so that the material to be treated can collide with each other under the physical action of high pressure and high speed, and the blasting action generated instantaneously when the bubbles of the nano-bubble liquid burst, so as to promote the material to be treated to fully react. In this embodiment, the nano-bubble liquid is the nano-bubble liquid formed by carbon dioxide and water. Please refer to Figure 3As shown in the figure, it is the nano-bubble size concentration distribution diagram of the above-mentioned preferred embodiment of the present invention. After detection and statistics, the bubbles formed by the gas-liquid mixing device 70 can reach 25nm - 363nm. Then, the nano-bubble water is sent into the reaction tank 60 of the material to be treated through the pressure pump 71. In addition to forming a predetermined pressure in the reaction tank 60 of the material to be treated, the material to be treated ejected instantaneously under high pressure can fully react with the nano-bubble water in the reaction tank 60 of the material to be treated. Among them, the ratio of the nano-bubble water in the reaction tank 60 of the material to be treated is 1 - 2 liters per minute, while the ratio of the material to be treated in the reaction tank 60 of the material to be treated is 100 - 200 kilograms per minute, the reaction time is 1 - 3 minutes, and the pressure in the pre-storage tank 30 of the material to be treated is greater than the pressure in the reaction tank 60 of the material to be treated. In the preferred embodiment of the present invention, the pressure formed in the reaction tank 60 of the material to be treated is about 6 - 12 kg / cm 3

[0044] S4. Reaction step of the material to be treated: Make the material to be treated in the reaction tank 60 of the material to be treated further undergo an oxidation-reduction chemical reaction with the nano-bubble liquid and the hydroxyl radicals contained in the water, so as to further cause mass transfer at the heterogeneous interface between the material to be treated and the nano-bubble liquid.

[0045] S5. Finished product completion step: Discharge the treated material after the reaction from the finished product output valve 61 installed below the reaction tank 60 of the material to be treated to obtain the finished product.

[0046] The technical means and achieved effects used in the present invention are described as follows:

[0047] In the embodiment of the present invention, slag granular materials pre-treated to a predetermined size are impacted on the carbon dioxide nano-bubble liquid at high pressure and high speed, so that the slag granular materials can collide with each other under the physical action of high pressure and high speed. Coupled with the blasting action generated instantaneously when the bubbles of the carbon dioxide nano-bubble liquid burst, the slag granular materials can fully react. And because the carbon dioxide nano-bubble liquid generates micro-nano bubbles, hydroxyl radicals and single oxygen atoms in the water body through a powerful vortex motor and a strong electric field to dissociate molecular bonds. Among them, the hydroxyl radical (—OH) is an important reactive oxygen species. From the molecular formula, it is formed by the hydroxyl group (OHˉ) losing an electron. Therefore, the hydroxyl radical has extremely strong electron ability, that is, oxidation ability (the oxidation potential reaches 2.8V, which is the second most powerful oxidant in nature after fluorine). Therefore, it can further reduce the free calcium oxide (CaO) and magnesium oxide (MgO) in the material to be treated, carry out oxidation reactions, and finally become calcium carbonate (CaCO3) and magnesium carbonate (MgCO3) respectively. The chemical formula of its oxidation-reduction reaction is:

[0048] CaO + H2O = Ca(OH)2

[0049] MgO + H2O = Mg(OH)2

[0050] Ca(OH)2 + CO2 = CaCO3 + H2O

[0051] Mg(OH)2 + CO2 = MgCO3 + H2O

[0052] Since calcium carbonate (CaCO3) and magnesium carbonate (MgCO3) are both compounds with excellent stability, there is no concern about expansion, so the stabilization effect of slag pellets can be achieved.

[0053] Therefore, through the treatment equipment and treatment method of the present invention, the slag pellets can be stabilized, and because CaCO3 and MgCO3 do not cause pollution, they can be recycled and used as recycled materials for concrete.

[0054] Finally, the advantages of the present invention are described as follows:

[0055] 1. The present invention operates at normal temperature water and normal temperature environment;

[0056] 2. The present invention has unit batch processing, so the processing can be completed in a very short time;

[0057] 3. The equipment tank body and pipelines of the present invention are easy to maintain;

[0058] 4. The unit processing cost of the present invention is low, and there is no generation of secondary industrial waste, and it will not cause environmental pollution;

[0059] 5. The present invention has a carbon sequestration effect, that is, it transforms from calcium hydroxide and magnesium hydroxide into calcium carbonate and magnesium carbonate, and can solidify carbon dioxide from gas into solid. In the future, we can obtain carbon rights based on this.

[0060] The embodiments disclosed above are only for illustrating the technical means of the present invention rather than limiting. All equivalent modifications made by the present invention should be regarded as the protection scope of the present invention. The present invention is the first in this field and has the improvement of practical efficacy, and thus an application is filed according to law.

Claims

1. A solid-liquid-gas interface mass transfer device, characterized in that, It includes: A pretreatment device for the material to be processed, which has a feeding port above it, and the material to be processed in the form of solid or gas can be fed into the pretreatment device for pretreatment; A pre-storage tank for the material to be processed, connected to the lower part of the pretreatment device for the material to be processed, and the material to be processed by the pretreatment device for the material to be processed can be pre-stored first, and the pre-storage tank for the material to be processed can be made airtight; A gas and pressure control device, connected to the pre-storage tank for the material to be processed, which can generate high-pressure gas and send the high-pressure gas into the pre-storage tank for the material to be processed; A pulse pressure control valve, connected to the lower part of the pre-storage tank for the material to be processed, and the pulse pressure control valve is connected with a time-domain pulse controller, which can instantaneously send out the high-pressure gas from the material to be processed in the pre-storage tank for the material to be processed through the pulse pressure control valve; A reaction tank for the material to be processed, connected to the lower part of the pulse pressure control valve, which can receive the material to be processed ejected instantaneously under high pressure by the pulse pressure control valve, and a finished product output valve is connected to the lower part of the reaction tank for the material to be processed; A gas-liquid mixing device, connected to the reaction tank for the material to be processed, which can send the nano-bubble liquid formed by mixing gas and liquid into the reaction tank for the material to be processed, so that the material to be processed ejected instantaneously under high pressure can fully react with the nano-bubble liquid in the reaction tank for the material to be processed.

2. The solid-liquid-gas interface mass transfer device according to claim 1, wherein A pressure pump is provided between the gas and pressure control device and the pre-storage tank for the material to be processed.

3. A method for mass transfer at the solid-liquid-gas interface, characterized in that, It includes the following steps: S1. Pretreatment step of the material to be processed: Feed the material to be processed in the form of solid or gas into a pretreatment device for the material to be processed for pretreatment; S2. Pre-storage step of the material to be processed: Place the pretreated material to be processed into a pre-storage tank for the material to be processed filled with high-pressure gas; S3. Collision and blasting step: Use a pulse pressure control valve to perform multiple instantaneous opening and closing actions, and spray the material to be processed in the pre-storage tank for the material to be processed into the reaction tank for the material to be processed with nano-bubble liquid in a high-pressure and high-speed impact manner for mixing; S4. Reaction step of the material to be processed: Make the material to be processed in the reaction tank for the material to be processed react chemically with the nano-bubble liquid, so as to cause a heterogeneous mass transfer change between the material to be processed and the nano-bubble liquid; S5. Finished product completion step: Discharge the material to be processed from a finished product output valve installed at the lower part of the reaction tank for the material to be processed to obtain the finished product.

4. The solid-liquid-gas interface mass transfer method according to claim 3, characterized in that, In the pretreatment step of the material to be processed, if the material to be processed is solid, the pretreatment device for the material to be processed can crush and screen the solid; If the material to be processed is gas, the pretreatment device for the material to be processed can filter the gas and remove impurities.

5. The solid-liquid-gas interface mass transfer method according to claim 3, wherein In the pre-storage step of the material to be processed, the pre-storage tank for the material to be processed is connected with a gas and pressure control device to provide high-pressure gas to the pre-storage tank for the material to be processed.

6. The solid-liquid-gas interface mass transfer method according to claim 3, characterized in that, In the reaction step of the material to be processed, the reaction tank for the material to be processed is connected with a gas-liquid mixing device to provide nano-bubble liquid to the reaction tank for the material to be processed.

7. The solid-liquid-gas interface mass transfer method according to claim 3, wherein In the collision and blasting step, the pressure in the pre-storage tank for the material to be processed is greater than the pressure in the reaction tank for the material to be processed.

8. The solid-liquid-gas interface mass transfer method according to claim 7, characterized in that The pressure of the pre-storage tank for the material to be processed is 7 kg / cm 3 ~15 kg / cm 3 , and the pressure of the reaction tank for the material to be processed is 6 kg / cm 3 ~12 kg / cm 3 .

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