Tail gas treatment system and microbial carbon sequestration device therein

Abstract

The utility model relates to a tail gas treatment system and a microbial carbon sequestration device therein, and relates to the field of waste gas treatment. The microorganism carbon sequestration device comprises a shell, a tank body formed by enclosure of the shell, a light-emitting assembly and a gas spraying piece, the tank body is used for containing feed liquid, the light-emitting assembly is arranged on the inner wall of the tank body, and the gas spraying piece is arranged in the tank body. According to the device, carbon dioxide can be ingeniously adsorbed and fixed by utilizing the photosynthetic reaction of microorganisms, so that the carbon dioxide becomes a carbon source of the microorganisms, and the bred microorganisms can be automatically discharged and treated to form a marketable product, so that the recycling of the carbon dioxide in the tail gas is realized.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment, in particular to a tail gas treatment system and a microbial carbon fixation device therein. Background Art

[0002] With the acceleration of the industrialization process, industrial tail gas emissions have become a key factor in environmental pollution and climate change. In particular, carbon dioxide (CO2), one of the main greenhouse gases, the continuous increase in its emissions has had a significant negative impact on the global climate system, including but not limited to the increase in the frequency and intensity of extreme weather events, and a series of resulting ecological and environmental problems. Although there are currently various technical means for treating harmful substances in tail gas, there are still major challenges in the capture and treatment of carbon dioxide. Traditional emission reduction measures often focus on end-of-pipe treatment, while ignoring the possibility of carbon dioxide as a potential resource. Therefore, it is crucial to research and develop a system that can efficiently capture and convert carbon dioxide in industrial tail gas. Such a system should not only have high selectivity and efficiency to minimize carbon dioxide emissions, but also be able to convert the captured carbon dioxide into valuable commodities, such as fuels, feeds, and other high-value-added products. Therefore, the research and development of a device and system for the treatment and utilization of carbon dioxide in industrial tail gas can not only reduce the negative impact of carbon dioxide on the environment, but also create new economic growth and employment opportunities, thus achieving a win-win situation for the environment and the economy. Summary of the Utility Model

[0003] In view of the above problems, the utility model provides a microbial carbon fixation device, which can utilize the photosynthetic reaction of microorganisms to cleverly adsorb and fix carbon dioxide, making it the carbon source of microorganisms, and the microorganisms after reproduction can be automatically discharged and form marketable products after treatment, so as to realize the reuse of carbon dioxide in tail gas.

[0004] To achieve the above object, the utility model provides a microbial carbon fixation device, including a housing, a tank body enclosed by the housing, a light-emitting component, and a gas injection part. The tank body is used to accommodate the liquid material, the light-emitting component is arranged on the inner wall of the tank body, and the gas injection part is arranged in the tank body.

[0005] In one embodiment, the light-emitting component includes a plurality of light-emitting elements, and the light-emitting elements are dispersedly arranged on the inner wall of the tank body.

[0006] In one embodiment, the light-emitting element includes a plurality of lamps and a column body, and the lamps are arranged on the surface of the column body.

[0007] In one embodiment, the lamp is a multi-channel spectrum adjustable LED lamp.

[0008] In one embodiment, the light-emitting elements are dispersedly arranged on the inner wall of the middle part of the tank body.

[0009] In one embodiment, the gas injection element is located at the lower part of the tank body. The gas injection element includes a coiled pipe, and a plurality of gas injection holes are provided on the coiled pipe.

[0010] In one embodiment, the gas injection element is suspended inside the tank body through a support frame, and the support frame is arranged at the bottom of the tank body.

[0011] In one embodiment, the openings of the gas injection holes face the bottom of the tank body.

[0012] In one embodiment, a breathing valve is provided at the top of the tank body, a liquid material outlet is provided at the upper part of the tank body, a gas inlet is provided at the lower part of the tank body, and the gas inlet is communicated with the gas injection element.

[0013] In one embodiment, a temperature regulating device is provided on the periphery of the microbial carbon fixation device.

[0014] In one embodiment, the liquid material includes microorganisms for carbon fixation.

[0015] In one embodiment, the microorganisms for carbon fixation include algae and bacteria.

[0016] The above-mentioned microorganisms can utilize the light emitted by the light-emitting assembly for photosynthesis and absorb the carbon dioxide injected through the gas injection element.

[0017] In one embodiment, the temperature regulating device includes a plurality of coiled pipes for circulating circulating water.

[0018] The present invention also provides an exhaust gas treatment system, including an adsorption system and a carbon fixation system. The carbon fixation system includes a regeneration tower, the microbial carbon fixation device, a solid-liquid separator, and a drying device that are connected in sequence.

[0019] In one embodiment, the adsorption system includes a regeneration tower, a drying device, and an absorption tower that are connected in sequence.

[0020] Compared with the prior art, the present utility model has the following beneficial effects:

[0021] An exhaust gas treatment system and a microbial carbon fixation device therein according to the present utility model can achieve high cell density cultivation of microorganisms. The microbial carbon fixation device can utilize the photosynthetic reaction of microorganisms to cleverly adsorb and fix carbon dioxide, making it a carbon source for microorganisms. Moreover, the microorganisms after reproduction can be automatically discharged and form a salable product after treatment, thereby realizing the reuse of carbon dioxide in the exhaust gas. Description of the Drawings

[0022] Figure 1 It is a schematic flow chart of the tail gas treatment system in the embodiment;

[0023] Figure 2 It is a structural diagram of the microbial carbon fixation device in the embodiment;

[0024] Figure 3 It is a structural diagram of the gas injection part in the embodiment;

[0025] Among them, 1 is the tank body, 11 is the breathing valve, 12 is the liquid outlet, 13 is the light-emitting component, 14 is the gas injection part, 141 is the coiled pipe, 142 is the gas injection hole, 15 is the gas inlet, and 2 is the temperature adjustment device. Detailed Description of the Invention

[0026] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] Embodiment

[0030] A tail gas treatment system and a microbial carbon fixation device therein.

[0031] I. Structure of the tail gas treatment system.

[0032] The tail gas treatment system includes an adsorption system and a carbon fixation system. The adsorption system is composed of a regeneration tower, a drying device, and an absorption tower connected in sequence. The carbon fixation system is communicated by a regeneration tower, a microbial carbon fixation device, a solid-liquid separator, and a drying device in sequence.

[0033] II. Working process of the tail gas treatment system.

[0034] The structure of the tail gas treatment system is asFigure 1 as shown

[0035] Workflow: In the adsorption system, the treated chimney tail gas enters the regeneration tower for heat exchange. After preliminary cooling, it enters the drying device, where the heat it contains is used for drying. Then it enters the carbon dioxide absorption tower, where carbon dioxide is absorbed by the lye, and the inert gas that cannot be absorbed is discharged.

[0036] Since the chimney tail gas has a high temperature and may contain harmful substances that affect the growth of microorganisms, the chimney tail gas should first undergo tail gas treatment (cooling, dust removal, heavy metal removal, etc.) before entering this system. The above process greatly reduces the volume of the treated tail gas.

[0037] In the carbon fixation system, the lye that has absorbed carbon dioxide enters the regeneration tower to desorb carbon dioxide. The desorbed carbon dioxide enters the microbial carbon fixation device through the gas inlet 15. After photosynthesis by the microorganisms in the liquid material, the carbon dioxide becomes the carbon source of the microorganisms, enabling them to reproduce continuously. The liquid material containing microorganisms is discharged and enters the solid-liquid separator to obtain a solid phase and a liquid phase. The liquid phase returns to the microbial carbon fixation device, and the solid phase enters the drying device, where it is dried by the heat of the chimney tail gas to become a qualified product for sale.

[0038] III. Structure of the microbial carbon fixation device.

[0039] The structure of the microbial carbon fixation device is as Figure 2 shown, and the structure of the gas injection part 14 is as Figure 3 shown Figure 3 It is a structural diagram of the gas injection part 14 when observed from the bottom of the tank towards the top of the tank.

[0040] The microbial carbon fixation device includes a housing and a tank body 1 enclosed by the housing.

[0041] The tank body 1 is divided into an upper part, a middle part, and a lower part. A breathing valve 11 is provided at the top of the tank. The tank body 1 is used to accommodate the liquid material containing microorganisms;

[0042] A liquid material outlet 12 is provided at the upper part of the tank body 1;

[0043] On the inner wall of the middle part of the tank body 1, a light-emitting component 13 is fixedly provided. The light-emitting component 13 is composed of several light-emitting parts, and the light-emitting parts are evenly and dispersedly fixed on the inner wall. In this embodiment, the light-emitting parts are lamp posts made of LED lights;

[0044] At the lower part of the tank body 1, there are a gas injection member 14 and a gas inlet 15. The gas inlet 15 is communicated with the gas injection member 14. The gas injection member 14 is arranged inside the tank body 1. In this embodiment, the gas injection member 14 is a coiled pipe 141 with a number of gas injection holes 142. The coiled pipe 141 is suspended inside the tank body 1 by a number of brackets fixed to the tank bottom, and does not contact the inner wall. The openings of the gas injection holes 142 face the tank bottom of the tank body 1.

[0045] A temperature adjustment device 2 is arranged outside the tank body 1. The temperature adjustment device 2 surrounds the tank body 1. In this embodiment, the temperature adjustment device 2 is composed of a number of coiled pipes through which circulating water can flow. When the ambient temperature is relatively high, the water-cooling cooling method can be adopted to introduce cold water into the coiled pipes to cool the microbial carbon fixation device. When the ambient temperature is relatively low, hot water can be introduced into the coiled pipes to keep the microbial carbon fixation device warm, so that the microbial carbon fixation device can be maintained at a temperature more suitable for the reproduction of microorganisms.

[0046] IV. Working process of the microbial carbon fixation device.

[0047] After carbon dioxide enters the tank body 1 from the gas inlet 15, it is ejected from the gas injection holes 142 towards the tank bottom. Due to the low density of carbon dioxide, it is mixed with the liquid material by means of the power of the injection airflow. The density of the microorganisms mixed with carbon dioxide and the liquid in the liquid material decreases, so they move upward. Part of the unabsorbed carbon dioxide is released at the liquid surface. Coupled with the fact that part of the carbon dioxide is absorbed by the microorganisms, the density of this part of the liquid material moving upward increases, so it moves downward. Thus, the effect of using carbon dioxide to stir the liquid material in the tank body 1 and making the microorganisms in the liquid material evenly distributed is achieved, and the nutrients are easily delivered to the microorganisms, enabling them to better absorb and utilize carbon dioxide.

[0048] At the same time, during the above-mentioned up-and-down circulation process, due to the light-emitting members uniformly dispersed and fixed on the inner wall providing light sources, the microorganisms can have sufficient light conditions for photosynthesis, solving the problem of poor light conditions under natural conditions (no light at night, inappropriate light spectrum, self-shading of microorganisms, etc.). During the photosynthesis process, carbon dioxide is utilized by the microorganisms as a carbon source. After continuous reproduction for a period of time, the liquid level of the liquid material slowly rises with the growth of the microorganisms and finally reaches the liquid material outlet 12. After the liquid material containing microorganisms is discharged from the liquid material outlet 12, it enters the solid-liquid separator. After solid-liquid separation and drying, qualified products for sale can be obtained.

[0049] In this embodiment, as long as the microorganisms can perform photosynthesis, bacteria, algae, etc. can be selected.

[0050] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0051] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A microbial carbon fixation device, characterized in that, It includes a housing, a tank body formed by enclosing the housing, a light-emitting component, and a gas injection component. The tank body is used to contain the liquid material. The light-emitting component is arranged on the inner wall of the tank body, and the gas injection component is arranged inside the tank body.

2. The microbial carbon fixation device according to claim 1, wherein The light-emitting component includes a plurality of light-emitting elements, and the light-emitting elements are dispersedly arranged on the inner wall of the tank body.

3. The microbial carbon fixation device according to claim 1, characterized in that, The gas injection component is located at the lower part of the tank body. The gas injection component includes a coiled pipe, and a plurality of gas injection holes are provided on the coiled pipe.

4. The microbial carbon fixation device according to claim 3, characterized in that, The openings of the gas injection holes face the bottom of the tank body.

5. The microbial carbon fixation device according to claim 1, characterized in that, A breathing valve is provided at the top of the tank body. A liquid material outlet is provided at the upper part of the tank body. A gas inlet is provided at the lower part of the tank body, and the gas inlet is communicated with the gas injection component.

6. The microbial carbon fixation device according to any one of claims 1-5, characterized in that, A temperature adjustment device is provided on the periphery of the microbial carbon fixation device.

7. The microbial carbon fixation device according to claim 6, wherein, The liquid material includes microorganisms for carbon fixation.

8. The microbial carbon fixation device according to claim 6, wherein, The temperature adjustment device includes a plurality of coiled pipes, and the coiled pipes are used for circulating water.

9. An exhaust gas treatment system, characterized in that, It includes an adsorption system and a carbon fixation system. The carbon fixation system includes a regeneration tower, the microbial carbon fixation device according to any one of claims 1-8, a solid-liquid separator, and a drying device that are connected in sequence.

10. The tail gas treatment system according to claim 9, characterized in that, The adsorption system includes a regeneration tower, a drying device, and an absorption tower that are connected in sequence.

Images