Microorganism growth and reproduction device for CO2 mineralization treatment in coal mining area

Abstract

The invention discloses a microorganism growth and reproduction device for CO2 mineralization treatment in a coal mining area, and relates to the technical field of carbon dioxide mineralization treatment, the microorganism growth and reproduction device comprises a reaction tank body, a temperature control system, a gas supply assembly, a nutrition supply assembly and a control system, and a stirring assembly is arranged in the reaction tank body. Microorganisms, a nutrient solution and CO2 in the reaction tank body are stirred through the arranged stirring assembly, the microorganisms and the nutrient solution are fully mixed, meanwhile, contact between the microorganisms and CO2 is increased, then CO2 is stably and evenly supplied through the gas supply assembly, needed nutrients are supplemented in time through the nutrition supply assembly, and the nutrient supply efficiency is improved. Good conditions are created for growth and reproduction of microorganisms; the temperature in the reaction tank body can be adjusted through the heating assembly and the cooling assembly, so that the reaction tank body is always in a growth environment suitable for microorganisms, and the activity and the metabolic capability of the reaction tank body are improved, so that the mineralization efficiency of the microorganisms on CO2 is remarkably improved, and the emission of CO2 in a coal mining area is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of carbon dioxide mineralization treatment, and particularly relates to a microbial growth and reproduction device for CO2 mineralization treatment in a coal mining area. BACKGROUND

[0002] With the increase of coal mining activities, a large amount of CO2 emission is generated in the coal mining area, which seriously affects the environment. The traditional CO2 treatment method often has problems such as high cost, low efficiency, and easy secondary pollution.

[0003] Microbial mineralization technology, as a new CO2 treatment method, has the advantages of great potential and environmental friendliness. However, in practical application, there is a lack of efficient microbial growth and reproduction device specially designed for the environment of coal mining area. The existing microbial culture device cannot meet the complex conditions of coal mining area and the specific requirements of CO2 mineralization treatment, such as unable to accurately control environmental parameters, uneven gas supply, and difficult to realize large-scale continuous treatment.

[0004] Therefore, the present application is proposed to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a microbial growth and reproduction device for CO2 mineralization treatment in a coal mining area, to solve the technical problems of the existing microbial growth and reproduction device that is not convenient for accurate control of environmental parameters and uneven gas supply.

[0006] The present application aims to provide a microbial growth and reproduction device for CO2 mineralization treatment in a coal mining area, comprising: A reaction tank body is provided with a stirring assembly inside, a feed inlet is provided at the top of the reaction tank body, a feed pipe is communicated with the feed inlet, the feed pipe is used for feeding microbial liquid into the reaction tank body, and a liquid discharge pipe is communicated with the peripheral wall of the lower end of the reaction tank body; A temperature control system comprises a heating assembly and a cooling assembly; A gas supply assembly comprises a gas storage tank, the gas outlet end of the gas storage tank is connected with a gas distribution assembly, and the gas distribution assembly is arranged at the bottom of the reaction tank body; A nutrient supply assembly is connected with the feed inlet through a supply pipe, and the nutrient supply assembly is used for inputting nutrient solution into the reaction tank body; A control system comprises a controller, and further comprises a pH sensor, a dissolved oxygen sensor and a biomass sensor arranged in the reaction tank body, which are electrically connected with the controller.

[0007] Further, the stirring assembly comprises a driving shaft vertically arranged in the reaction tank body. The lower end of the drive shaft is rotatably arranged at the bottom of the reaction tank body, and the upper end of the drive shaft penetrates the upper end of the reaction tank body; A speed reducer motor is arranged on the reaction tank body, and the output shaft of the speed reducer motor is connected with the drive shaft; At least one group of stirring blades is arranged on the drive shaft along the height direction of the drive shaft.

[0008] Further, the heating assembly is an electric heating wire, the electric heating wire is arranged around the outer peripheral wall of the reaction tank body, and the electric heating wire is electrically connected with an external power supply.

[0009] Further, the cooling assembly is a water cooling coil, the water cooling coil is bent and coiled, and the water cooling coil is arranged in close contact with the inner wall of the reaction tank body; The water inlet and the water outlet of the water cooling coil are located outside the reaction tank body; The water inlet and the water outlet of the water cooling coil are connected with an external cooling water source.

[0010] Further, a plurality of temperature sensors are arranged on the inner wall of the reaction tank body along the height direction of the inner wall, and the plurality of temperature sensors are electrically connected with the controller.

[0011] Further, the gas distribution assembly comprises an annular pipe arranged at the bottom of the reaction tank body; A plurality of transverse pipes in communication are arranged between the inner side walls of the annular pipe; A plurality of gas holes are arranged on the annular pipe and the transverse pipes; The annular pipe and the gas storage tank are connected in communication through a communication pipe; A gas flow meter and an adjusting valve are arranged on the communication pipe, and the adjusting valve is electrically connected with the controller.

[0012] Further, the nutrient supply assembly comprises a nutrient liquid storage tank; A peristaltic pump is arranged on the nutrient liquid storage tank, and the peristaltic pump is electrically connected with the controller; The suction tube of the peristaltic pump is deeply arranged in the nutrient liquid storage tank; The liquid discharge pipe is connected in communication with the feed inlet.

[0013] Further, a liquid discharge valve is arranged on the liquid discharge pipe, and the liquid discharge valve is electrically connected with the controller.

[0014] By adopting the above technical scheme, the present application has the following beneficial effects: 1. Efficient mineralization treatment: the stirring assembly is arranged to stir the microorganisms, nutrient liquid and CO2 in the reaction tank body, so that the microorganisms and the culture liquid are fully mixed, the contact between the microorganisms and the CO2 is increased, the mineralization efficiency of the microorganisms on the CO2 is improved, and the emission of CO2 in the coal mining area is effectively reduced.

[0015] 2. Precise control of environmental parameters: The temperature inside the reaction tank can be adjusted by the heating and cooling components, so that it is always in a suitable growth environment for microorganisms, improving their activity and metabolic capacity.

[0016] 3. Uniform gas supply: The CO2 gas can be uniformly dispersed into the liquid in the reaction tank by the gas supply component, ensuring sufficient contact between the gas and the microorganisms and increasing the contact area between them, thereby effectively improving the reaction rate and mineralization effect.

[0017] 4. Sustainable development of the environment: The treatment process of the embodiment uses the mineralization of microorganisms to fix CO2, without using chemical reagents and causing secondary pollution, which helps to achieve the ecological and friendly development of the coal industry. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are part of this application, serve to provide a further understanding of the application, and the schematic embodiments of the application and their descriptions serve to explain the application, but do not constitute an improper limitation on the application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained from these drawings by those of ordinary skill in the art without creative labor. In the drawings: Figure 1 A structural schematic diagram of the microbial growth and reproduction device provided by the embodiment of the application is shown in the figure; Figure 2 A front view of the microbial growth and reproduction device provided by the embodiment of the application is shown in the figure; Figure 3 A structural sectional view of the microbial growth and reproduction device provided by the embodiment of the application is shown in the figure; Figure 2 A structural sectional view of the microbial growth and reproduction device provided by the embodiment of the application is shown in the figure; Figure 4 A structural sectional view of the microbial growth and reproduction device provided by the embodiment of the application is shown in the figure; Figure 5 A structural schematic diagram of the gas supply component of the microbial growth and reproduction device provided by the embodiment of the application is shown in the figure.

[0019] Reference signs: 1, reaction tank; 2, stirring component; 3, temperature control system; 4, gas supply component; 5, nutrient supply component; 6, liquid discharge pipe; 7, liquid discharge valve; 8, feed inlet; 9, feed pipe; 21, drive shaft; 22, stirring blade; 23, speed reducer motor; 31, heating component; 32, cooling component; 33, temperature sensor; 41, gas storage tank; 42, annular pipe; 43, transverse pipe; 44, air hole; 45, communication pipe; 51, nutrient liquid storage tank; 52, peristaltic pump.

[0020] It should be noted that these drawings and written description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0021] The specific embodiments of the present application are further described in detail with reference to the accompanying drawings.

[0022] Reference Figures 1 to 5 As shown in the drawings, the embodiments of the present application provide a microbial growth and reproduction device for CO2 mineralization treatment of coal mining area, which comprises a reaction tank body 1, a temperature control system 3, a gas supply assembly 4, a nutrient supply assembly 5 and a control system. The reaction tank body 1 provides sufficient growth space for microorganisms. The reaction tank body 1 is provided with a stirring assembly 2. The top of the reaction tank body 1 is provided with a feed inlet 8. The feed inlet 8 is communicated with a feed pipe 9. The feed pipe 9 is used for feeding microbial liquid into the reaction tank body 1. The lower end of the reaction tank body 1 is communicated with a liquid discharge pipe 6. When the microorganisms in the reaction tank body 1 reach a certain stage or need to be discharged, they are discharged through the liquid discharge pipe 6. The temperature control system 3 comprises a heating assembly 31 and a cooling assembly 32. The gas supply assembly 4 comprises a gas storage tank 41. The gas outlet end of the gas storage tank 41 is connected with a gas distribution assembly. The gas distribution assembly is arranged at the bottom of the reaction tank body 1. The supply pipe of the nutrient supply assembly 5 is communicated with the feed inlet 8. The nutrient supply assembly 5 is used for inputting nutrient solution into the reaction tank body 1. The control system comprises a controller. The control system further comprises a pH sensor, a dissolved oxygen sensor and a biomass sensor arranged in the reaction tank body 1. The pH sensor, the dissolved oxygen sensor and the biomass sensor are electrically connected with the controller.

[0023] It should be noted that the pH sensor is used for real-time monitoring of the acidity and alkalinity of the culture solution in the reaction tank body 1. The growth and reproduction of microorganisms have specific requirements for the pH value of the culture solution. Different microorganisms may require different pH ranges at different growth stages. Through the pH sensor, the change of the pH value can be known in time, so that appropriate measures (such as adding acid-base regulator) can be taken to maintain the appropriate acidity and alkalinity, and the normal growth and metabolism of microorganisms can be ensured. The dissolved oxygen sensor is used for measuring the dissolved oxygen content in the liquid in the reaction tank body 1. Oxygen is necessary for the respiration and metabolism of some microorganisms, but too high or too low dissolved oxygen content may affect the growth and activity of microorganisms. The dissolved oxygen sensor can help determine whether the aeration amount or stirring speed needs to be adjusted, so as to ensure that the microorganisms have sufficient and appropriate oxygen supply. The biomass sensor is used for evaluating the number or concentration of microorganisms in the reaction tank body 1. Understanding the change of the biomass of microorganisms can reflect the growth and reproduction of microorganisms, so as to judge the progress and effect of the treatment process. This helps to determine the optimal treatment time, adjust the nutrient supply and evaluate the running efficiency of the device, etc.

[0024] In the above scheme, the microorganism, nutrient solution and CO2 in the reaction tank body 1 are stirred by the stirring assembly 2 arranged, so that the microorganism is fully mixed with the culture solution, and the contact between the microorganism and CO2 is also increased, then the CO2 is stably and uniformly supplied by the gas supply assembly 4, the nutrient supply assembly 5 timely supplements the required nutrients, which creates good conditions for the growth and reproduction of the microorganism; the temperature in the reaction tank body 1 can be adjusted by the heating assembly 31 and the cooling assembly 32 arranged, so that it is always in a suitable growth environment for the microorganism, which improves its activity and metabolic capacity, and according to the pH sensor, dissolved oxygen sensor and biomass sensor arranged, the growth environment of the microorganism can be accurately controlled, so that the mineralization efficiency of the microorganism to CO2 is significantly improved, and the emission of CO2 in the coal mining area is effectively reduced.

[0025] In some possible embodiments, referring to Figure 3 As shown, the stirring assembly 2 includes a driving shaft 21 vertically arranged in the reaction tank body 1, the lower end of the driving shaft 21 is rotatably arranged at the bottom of the reaction tank body 1, the upper end of the driving shaft 21 penetrates the upper end of the reaction tank body 1, a speed reducer motor 23 is arranged on the upper end of the reaction tank body 1, the output shaft of the speed reducer motor 23 is connected with the driving shaft 21, and at least one set of stirring blades 22 is arranged on the driving shaft 21 along the height direction thereof.

[0026] In the above scheme, when the microorganism, nutrient solution and CO2 are stirred, the speed reducer motor 23 is started by the controller, the speed reducer motor 23 drives the driving shaft 21 to rotate through the output shaft thereof, and the driving shaft 21 drives the stirring blades 22 to rotate, so that the microorganism, nutrient solution and CO2 are stirred.

[0027] In some possible embodiments, referring to Figures 2 to 4 As shown, the heating assembly 31 is an electric heating wire, the electric heating wire is arranged around the outer peripheral wall of the reaction tank body 1, the electric heating wire is electrically connected with an external power supply, and the power-on and power-off of the electric heating wire are controlled by the controller.

[0028] In the above scheme, the electric heating wire is made of an alloy material with high temperature resistance and stable resistance, such as nickel-chromium alloy, the electric heating wire is packaged in a ceramic tube to prevent direct contact with the outside and corrosion, and by connecting with the external power supply, the electric heating wire can heat the reaction tank body 1, so that heat is transferred to the liquid in the reaction tank body 1.

[0029] In some possible embodiments, referring to Figure 3 and Figure 4As shown, the cooling assembly 32 is a water-cooled coil, which is bent and coiled and attached to the inner wall of the reaction tank body 1. The water inlet and outlet of the water-cooled coil are located outside the reaction tank body 1 and connected to an external cooling water source. Specifically, the water-cooled coil is connected to a water pump, which is electrically connected to the controller.

[0030] In the above scheme, the water-cooled coil is made of copper or stainless steel pipe, and a certain distance is maintained between the pipes to ensure good cooling effect. When cooling the liquid in the reaction tank body 1, the water pump is started by the controller to pump cooling water, which circulates between the water-cooled coil and the external cooling water source, so that the water-cooled coil absorbs the heat of the liquid in the reaction tank body 1.

[0031] In some possible embodiments, referring to Figure 4 As shown, a plurality of temperature sensors 33 are arranged at intervals along the height direction of the inner wall of the reaction tank body 1 and electrically connected to the controller.

[0032] In the above scheme, the plurality of temperature sensors 33 are used to monitor the temperature in the reaction tank body 1 in real time and feed back to the temperature control system 3, so that the controller controls the cooling assembly 32 or the heating assembly 31 to adjust the temperature of the liquid in the reaction tank body 1, so that the microorganisms can grow properly.

[0033] In some possible embodiments, referring to Figure 5 As shown, the gas distribution assembly includes an annular pipe 42 arranged at the bottom of the reaction tank body 1, a plurality of transverse pipes 43 arranged in the annular pipe 42 and connected in series, a plurality of gas holes 44 arranged on the annular pipe 42 and the transverse pipes 43, and a gas flow meter and an adjusting valve 46 arranged on the communication pipe 45, which is connected to the gas storage tank 41 and the annular pipe 42. The adjusting valve 46 is electrically connected to the controller.

[0034] In the above scheme, the gas storage tank 41 stores high-pressure CO2 gas. When gas supply is needed, the adjusting valve 46 is opened by the controller, the gas flow meter monitors the CO2 gas flow through the communication pipe 45 in real time, and the opening degree of the adjusting valve 46 controls the supply amount of the gas to ensure that the CO2 gas flow into the reaction tank body 1 meets the needs of microorganism growth, reproduction and mineralization treatment. The gas holes 44 enable the CO2 gas to be uniformly dispersed into the liquid in the reaction tank body 1, which can increase the contact area between the CO2 gas and the liquid, improve the dissolution efficiency and reaction rate of the CO2 gas, and create good conditions for the growth, reproduction and mineralization treatment of microorganisms. By continuously monitoring and adjusting the gas flow, stable and appropriate CO2 gas supply is ensured, thereby promoting the effective role of microorganisms in the CO2 gas mineralization treatment process in the coal mining area.

[0035] In some possible implementation manners, referring to Figure 3 As shown in the figure, the nutrient supply assembly 5 comprises a nutrient solution storage tank 51, a peristaltic pump 52 is arranged on the nutrient solution storage tank 51, the peristaltic pump 52 is electrically connected with the controller, the liquid suction pipe of the peristaltic pump 52 is deep into the nutrient solution storage tank 51, and the liquid discharge pipe of the peristaltic pump 52 is communicated with the feeding port 8.

[0036] In the above scheme, when the nutrient solution needs to be transported into the reaction tank body 1, the peristaltic pump 52 is started by the controller, and the peristaltic pump 52 transports the nutrient solution in the nutrient solution storage tank 51 into the reaction tank body 1.

[0037] In some possible implementation manners, referring to Figure 1 With Figure 2 As shown in the figure, the liquid discharge pipe 6 is provided with a liquid discharge valve 7, the liquid discharge valve 7 is electrically connected with the controller, when the microorganism reproduction reaches a certain stage or the product needs to be discharged, the liquid discharge valve 7 is opened by the controller, so that the liquid is discharged through the liquid discharge pipe 6.

[0038] The specific embodiment is only an explanation of the application, and is not a limitation of the application, and those skilled in the art can make modifications to the embodiment without creative contribution according to the needs after reading the specification, but as long as the modifications are within the protection scope of the application, they are protected by the patent law.

Claims

1. A microbial growth and propagation device for CO2 mineralization treatment of a coal mine extraction area, characterized by, The utility model relates to a kind of microbial fermentation device, including: Reaction tank body (1), stirring assembly (2) is provided in the reaction tank body (1), the top of the reaction tank body (1) is provided with feed inlet (8), feed inlet (8) is communicated with feed pipe (9), feed pipe (9) is used to introduce microbial bacteria liquid into reaction tank body (1), the lower end of the reaction tank body (1) peripheral wall is communicated with drain pipe (6); Temperature control system (3), the temperature control system (3) includes heating assembly (31) and cooling assembly (32); Gas supply assembly (4), the gas supply assembly (4) includes gas storage tank (41), the outlet end of the gas storage tank (41) is connected with gas distribution assembly, and the gas distribution assembly is arranged in the bottom of the reaction tank body (1); Nutrition supply assembly (5), the supply pipe of the nutrition supply assembly (5) is communicated with the feed inlet (8), and the nutrition supply assembly (5) is used to input nutrient solution into the reaction tank body (1); Control system, the control system includes controller, and the control system further includes pH sensor, dissolved oxygen sensor and biomass sensor arranged in the reaction tank body (1), and the pH sensor, dissolved oxygen sensor and biomass sensor are electrically connected with the controller respectively.

2. The coal mine area CO2 mineralization microbial growth and propagation device according to claim 1, characterized in that, The stirring assembly (2) includes a drive shaft (21) arranged vertically in the reaction tank body (1); The lower end of the drive shaft (21) is rotatably arranged in the bottom of the reaction tank body (1), and the upper end of the drive shaft (21) penetrates the upper end of the reaction tank body (1); The reaction tank body (1) is provided with a speed reducer (23), and the output shaft of the speed reducer (23) is connected with the drive shaft (21); At least one set of stirring blades (22) is arranged on the drive shaft (21) along the height direction thereof.

3. The coal mine area CO2 mineralization microbial growth and propagation device according to claim 2, characterized in that, The heating assembly (31) is an electric heating wire, which is arranged around the outer peripheral wall of the reaction tank body (1) and is electrically connected with an external power supply.

4. The coal mine area CO2 mineralization microbial growth and propagation device according to claim 3, characterized in that, The cooling assembly (32) is a water-cooled coil pipe, which is bent and coiled, and is arranged in close contact with the inner wall of the reaction tank body (1); The water inlet and the water outlet of the water-cooled coil pipe are located outside the reaction tank body (1); The water inlet and the water outlet of the water-cooled coil pipe are connected with an external cooling water source.

5. The coal mine area CO2 mineralization microbial growth and propagation device according to claim 4, characterized in that, A plurality of temperature sensors (33) are arranged at intervals along the height direction of the inner wall of the reaction tank body (1), and the plurality of temperature sensors (33) are electrically connected with the controller respectively.

6. The coal mine area CO2 mineralization microbial growth and propagation device according to claim 5, characterized in that, The gas distribution assembly includes an annular pipe (42) arranged in the bottom of the reaction tank body (1); A plurality of transverse pipes (43) are arranged in the annular pipe (42) and are connected in series; A plurality of gas holes (44) are arranged on the annular pipe (42) and the transverse pipe (43); The annular pipe (42) is connected with the gas storage tank (41) through a communication pipe (45); A gas flow meter and a regulating valve (46) are arranged on the communication pipe (45), and the regulating valve (46) is electrically connected with the controller.

7. The coal mine area CO2 mineralization microbial growth and propagation device according to claim 6, characterized in that, The nutrition supply assembly (5) includes a nutrient solution storage tank (51). The peristaltic pump (52) is arranged on the nutrient solution storage tank (51) and electrically connected with the controller; The liquid suction pipe of the peristaltic pump (52) is arranged in the nutrient solution storage tank (51). The liquid discharge pipe (6) is arranged with a liquid discharge valve (7), and the liquid discharge valve (7) is electrically connected with the controller.

8. The coal mine area CO2 mineralization microbial growth and propagation device according to claim 7, characterized in that, ​

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