CN116083218A - Spiral sleeve type reactor for carbon fixation and emission reduction by utilizing sewage to cultivate algae - Google Patents

Spiral sleeve type reactor for carbon fixation and emission reduction by utilizing sewage to cultivate algae Download PDF

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CN116083218A
CN116083218A CN202310164423.6A CN202310164423A CN116083218A CN 116083218 A CN116083218 A CN 116083218A CN 202310164423 A CN202310164423 A CN 202310164423A CN 116083218 A CN116083218 A CN 116083218A
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algae
reactor
spiral sleeve
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郭家骅
王启迪
刘欣
张舒已
王俊斐
田雨露
郭季璞
宋进喜
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Northwest University
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    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
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    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
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Abstract

The invention provides a spiral sleeve type reactor for carbon fixation and emission reduction by culturing algae by utilizing sewage, which comprises a safety valve, an air inlet valve, a gas flowmeter, a sleeve heat exchanger, an air compressor air storage tank, an LED lamp tube, a spiral sleeve type algae photosynthetic reactor, an air outlet valve, a circulating confluence injection pipeline, an algae liquid filtering and collecting mechanism, an air outlet valve and a data acquisition controller, wherein the air inlet valve, the gas flowmeter, the sleeve heat exchanger, the air compressor air storage tank, the safety valve, the spiral sleeve type algae photosynthetic reactor and the air outlet valve are sequentially connected through a gas conveying pipeline. The method can greatly improve the growth speed of the microalgae by providing the microalgae with a spectrum which is pertinently suitable for photosynthesis and a good and stable cultivation environment, and has a great market popularization prospect.

Description

Spiral sleeve type reactor for carbon fixation and emission reduction by utilizing sewage to cultivate algae
Technical Field
The invention belongs to the technical field of algae carbon sequestration and emission reduction equipment, and particularly relates to a spiral sleeve type reactor for carbon sequestration and emission reduction by culturing algae with sewage.
Background
At present, microalgae is a new generation biomass energy source, has huge grease production capacity, and can produce a large amount of biodiesel. Biodiesel is one of the most commonly used biofuels, which is also an ideal, renewable energy carrier. The microalgae not only can be used for relieving energy crisis, but also has important application value in the fields of foods, medicines, chemical industry, environment, energy and the like.
Microalgae growth requires nutrient elements such as nitrogen, carbon, phosphorus and the like, and algae cells can synthesize various bioactive substances with unique functions, such as proteins, unsaturated fatty acids (DHA, EPA, AA and the like), carotenoids (B-carotene, astaxanthin, lutein, zeaxanthin and the like), pigment-protein complexes (phycocyanin, phycoerythrin and the like), polysaccharide active polypeptides and the like, and have been widely applied to the fields of wastewater treatment, medicines, cosmetics, baits, biofuels and the like. However, the types of microalgae differ in the synthesis of metabolites, and thus, the applications thereof are different from one field to another.
Microalgae are widely distributed in water bodies such as oceans, rivers, lakes and the like, and are the main component of primary productivity in the systems; even in various extreme habitats such as polar regions, glaciers, deserts, saline-alkali lands, etc., are becoming "pioneer plants" in these habitats. These different habitats can even endow certain microalgae with special properties, such as low temperature resistance, acid resistance or salt and alkali resistance, which is provided for fully utilizing the unique advantages of the microalgae by reasonably utilizing local resources according to local conditionsProviding the possibility. In common CO 2 In the immobilization method, biological immobilization method, especially microalgae CO 2 Biosolidation technology has proven to be an environmentally friendly and sustainable CO 2 A fixed strategy. The microalgae in photosynthesis react CO in the dark by the energy (ATP) and reducing power (NADpH) produced in the photoreaction stage 2 The organic matters can be further converted into high-value compounds in algae cells, such as grease, protein, polysaccharide, pigment, polyphenol, etc., and can provide raw materials for various industries such as energy sources, foods, baits, medicines, cosmetics, health care products, etc., so as to convert CO 2 "changing waste into valuable" realizes great potential application value in national economy. Therefore, the microalgae biological carbon fixation technology has wide application prospect in realizing the 'double carbon' target.
The spirulina belongs to cyanobacteria and Oscillatoriaceae, is a light energy autotrophic organism, and has no real nucleus in cells, which is also called cyanobacteria. The research shows that the spirulina has high protein content and reasonable amino acid composition, wherein the content of 8 essential amino acids is close to the recommended standard of FAO, and the spirulina is the most excellent pure natural protein food source with comprehensive and balanced nutrition discovered by scientists so far. The spirulina will be CO 2 The characteristic of being one of carbon sources has been applied to the production of CO fixation in the production process of spirulina production base 2 Generally, CO and CO are mixed in a carbon fixing reactor in the process of recovering water from spirulina 2 React with CO through carbonate in backwater 2 Generating bicarbonate by reaction, thereby realizing CO 2 Is fixed by the fixing device. This method can effectively avoid CO 2 CO directly introduced into spirulina culture pond 2 And can play a plurality of roles of regulating pH, supplementing carbon sources and the like. Moreover, the proper growth condition of the spirulina is alkaline, which is more favorable for CO in alkaline environment 2 Is fixed by the fixing device.
Haematococcus pluvialis is a freshwater single-cell green alga with special biological properties; that is, in a low-light and nitrogen-phosphorus rich environment, the astaxanthin exists as motile green vegetative cells, while under stress or induction conditions, the astaxanthin exists as thick-walled stationary cells, and a large amount of astaxanthin is accumulated in the cells to be red. These induction conditions (or stress conditions) include high light, high temperature, nutrient salt (nitrogen, phosphorus) starvation, salt stress (NaCl, naAc, etc.), and oxidative stress (active oxygen, free radicals, and dissolved oxygen), etc. They are all without exception conditions of inhibition of cell growth and division and have synergistic effects. Because the algae still has good carbon fixing effect under weak light, the algae is selected as one of the reaction algae in the reactor.
Therefore, the microalgae culture recovery system is designed, the utilized microalgae is filtered and recovered, and the recovered microalgae can be reprocessed, so that the microalgae culture recovery system does not generate any pollution and waste, and can also embody extremely high added value.
Currently there are two main types of Photobioreactors (PBR) for culturing microalgae biomass: one is an open PBR, such as an open raceway pond; one type is a closed PBR, such as a pipeline reactor. However, when the two PBRs are adopted to culture microalgae, the biomass yield is low and is only 5-20 g/(m) 2 D), far lower than the theoretical yield of 120-150 g/(m) 2 ·d)。
The open PBR has large occupied area, deep algae liquid (long optical path) and complete open, is the reactor which is dominant in the microalgae at present, but has low yield, large occupied area, difficult control of environmental factors and CO 2 The defects of difficult addition, easy pollution by other organisms, low product quality and the like limit the further development. On the premise of the same culture volume, the occupied area of the closed PBR is only 25% -30% of that of the open PBR, the specific illumination surface area is increased by 5-8 times, the closed system can effectively control the influence of external pollution and unexpected factors and the culture condition, the biomass yield is higher, the lipid content after nitrogen stress is high, but the manufacturing cost is more than 10 times that of the open PBR, and the production of microalgae which is a high-added-value product is limited at present. The existing closed type photobioreactor has the problems of high material consumption, more joints, insufficient space utilization, large occupied area and the like, and has higher manufacturing cost.
The closed type photobioreactor may be generally classified into a cylindrical photobioreactor, a flat plate type photobioreactor, a pipe type photobioreactor, a stirring type photobioreactor, a plastic bag type photobioreactor, and the like. The column type photo-bioreactor has low energy consumption, simple and convenient operation, but high manufacturing cost and reduced practical application value, so the column type photo-bioreactor is less for outdoor microalgae culture and mainly used for experimental study. The flat plate type photobioreactor has the disadvantages that many compartments and supporting materials are required for scale-up, scale-up is difficult, it is difficult to control the culture temperature, and a certain degree of microalgae adherence growth occurs, etc. The pipeline type photobioreactor has the defects of serious dissolved oxygen accumulation, poor mixing in the illumination direction, high fluid conveying energy consumption, possibility of damaging algae cells, difficult harvesting and cleaning, easy adhesion of algae, difficult sterilization, difficult control of pH and temperature and the like in the culture process. Compared with other reactors, the stirring type photobioreactor has the advantages of complex internal structure, high manufacturing cost, difficult cleaning and easy generation of shearing force on algae cells. The plastic bag type photo-bioreactor has poor mixing property, difficult cleaning and short service life.
When the culture volume is the same, compared with the pipeline type photo-bioreactor, the material use, the number of joints and the occupied area of the vertical tube array type reactor are less than those of the pipeline type reactor, and the vertical photo-bioreactor system can develop upwards in space, thereby effectively reducing the occupied area and increasing the specific area of illumination.
Aiming at the defects of the prior art, particularly in the aspect of how algae have higher light energy utilization efficiency, a novel biological microalgae photosynthetic reactor is particularly needed, and a spiral sleeve type reactor for carbon fixation and emission reduction by cultivating algae by utilizing sewage is provided.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, and provides a spiral sleeve type reactor for carbon fixation and emission reduction by culturing algae with sewage so as to solve the problems in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an utilize sewage to cultivate spiral sleeve type reactor that algae carried out carbon fixation and emission reduction, includes relief valve, admission valve, gas flowmeter, double pipe heat exchanger, air compressor machine gas holder, LED fluorescent tube, spiral sleeve type algae photosynthetic reactor, air outlet valve, circulation confluence injection pipeline, algae liquid filtration collection mechanism, play water valve and data acquisition controller, connect in order through gas delivery pipeline between admission valve, gas flowmeter, double pipe heat exchanger, air compressor machine gas holder, relief valve, spiral sleeve type algae photosynthetic reactor and the air outlet valve, through circulation confluence injection pipeline connection between spiral sleeve type algae photosynthetic reactor and the algae liquid filtration collection mechanism, the LED fluorescent tube is used for supplying light for the algae that stores in the spiral sleeve type algae photosynthetic reactor, data acquisition controller respectively with relief valve, admission valve, gas flowmeter, double pipe heat exchanger, air compressor machine gas holder, LED fluorescent tube, spiral sleeve type algae photosynthetic reactor, air outlet valve, circulation confluence injection pipeline, algae liquid filtration collection mechanism and play water valve between signal connection carry out whole monitoring regulation and control.
Further, the spiral casing algae photosynthetic reactor consists of a plurality of groups of spiral casing type transparent pipelines which are connected in series, and LED lamp tubes are arranged inside and outside each group of spiral casing type transparent pipelines.
Further, the spirulina photosynthetic reactor is made of polycarbonate, and the outer tube of the spirulina photosynthetic reactor has the following dimensions: the diameter of the inner tube of the spiral casing algae photosynthetic reactor is 20mm-1000mm, the diameter of the outer tube is 40mm-2000mm, the length is 3000mm, the width is 400mm, and the height is 2000mm.
Furthermore, the gas conveying pipeline is used for flow transmission of smoke, and the gas conveying pipeline adopts a medical silicone tube.
Further, an automatic algae liquid filter is arranged in the algae liquid filtering and collecting mechanism and is used for recovering microalgae in the utilized algae liquid, and a polyacrylonitrile-based membrane is used for intercepting microalgae cells and is used for harvesting and separating the microalgae.
Further, the gas flowmeter is used for monitoring the flow of the entering smoke so as to realize the real-time regulation and control of the flow of the smoke and avoid the influence on the treatment efficiency of the gas caused by the fact that the flow rate of the smoke is too fast or too slow.
Further, the double-pipe heat exchanger is used for pre-cooling the entered plant flue gas, and reducing the flue gas with excessive temperature to a temperature range suitable for survival of algae through heat exchange.
Further, the air compressor is used for providing the driving force of gas flow, and the air storage tank of the air compressor is used for temporarily storing the flue gas.
Further, the circulating confluence injection pipeline is an algae liquid receiving end of the spiral casing algae photosynthetic reactor and is used for receiving the algae liquid used in the spiral casing algae photosynthetic reactor and recycling the algae liquid.
Further, the data acquisition controller comprises a pressure sensor, a temperature sensor, a light intensity sensor, a pH sensor, a liquid level sensor and a temperature control module;
at least one pressure probe is arranged in the air storage tank of the air compressor, the pressure probe is connected with a pressure sensor, and the operation safety of the air storage tank of the air compressor is ensured through real-time monitoring;
at least one temperature probe is arranged in the sleeve heat exchanger and connected with the temperature sensor;
at least one light intensity probe is arranged in the spiral casing algae photosynthetic reactor and connected with the light intensity sensor, and is used for adjusting and maintaining the optimal light intensity of algae liquid in real time;
at least one pH probe is arranged in a closed reactor tank body arranged in the spiral casing algae photosynthetic reactor, and the pH probe is connected with a pH sensor outside the closed reactor tank body through a circuit and is used for detecting the rise or fall of the pH value in real time so as to maintain the optimal pH value of algae liquid;
the algae liquid filtering and collecting mechanism is internally provided with at least one liquid level probe which is connected with the liquid level sensor and is used for monitoring the liquid level of the algae liquid in real time so as to regulate the discharge of the algae liquid in real time;
and a temperature control module is further arranged in the spiral casing algae photosynthetic reactor and used for guaranteeing the optimal temperature range of algae liquid.
Compared with the prior art, the invention has the following advantages:
the invention solves the problem that the traditional microalgae cultivation mode is adversely affected by weather, light, pollution, environmental temperature and the like by the spiral sleeve type algae photosynthetic reactor, and further solves the problems of poor growth stability and too slow growth speed of microalgae in natural environment. The spectrum which is pertinently suitable for photosynthesis and a good and stable cultivation environment are provided for the microalgae, so that the growth speed of the microalgae can be greatly improved, the carbon fixation efficiency per unit area is higher, the problems that the microalgae is influenced by natural environment factors, heavy metal pollution, fungal infection, other algae competition and the like are greatly reduced, and the growth period of the microalgae is shortened. The spiral sleeve type algae photosynthetic reactor is used for cultivating the spiral algae and haematococcus pluvialis, and can promote the carbon fixation efficiency of the spiral algae and haematococcus pluvialis to achieve a better treatment effect. The spiral sleeve type algae photosynthetic reactor not only pretreats the factory smoke through modularization, industrialization and standardization, but also further treats part of factory and municipal wastewater discharged, thereby achieving the purpose of higher-level energy conservation and emission reduction. The algae after the utilization can be reused, so that green energy-saving biomass energy and other byproducts can be developed, and the algae has a good market popularization prospect.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Reference numerals illustrate:
1-a safety valve; 2-an intake valve; 3-a gas flow meter; 4-a double-pipe heat exchanger; 5-an air compressor; 6-an air storage tank of the air compressor; 8-an LED lamp tube; 9-a spiral casing algae photosynthetic reactor; 10-an air outlet valve; 11-circulating confluence injection pipeline; 12-an algae liquid filtering and collecting mechanism; 13-a water outlet valve; 14-a data acquisition controller.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the present invention provides a technical solution: a spiral sleeve type reactor for carbon fixation and emission reduction by utilizing sewage to cultivate algae comprises a safety valve 1, an air inlet valve 2, a gas flow meter 3, a sleeve heat exchanger 4, an air compressor 5, an air compressor air storage tank 6, an LED lamp tube 8, a spiral sleeve algae photosynthetic reactor 9, an air outlet valve 10, a circulating confluence injection pipeline 11, an algae liquid filtering and collecting mechanism 12, an air outlet valve 13 and a data acquisition controller 14, wherein the air inlet valve 2, the gas flow meter 3, the sleeve heat exchanger 4, the air compressor 5, the air compressor air storage tank 6, the safety valve 1, the spiral sleeve algae photosynthetic reactor 9 and the air outlet valve 10 are sequentially connected through a gas conveying pipeline.
The spiral casing algae photosynthetic reactor 9 consists of a plurality of groups of spiral casing transparent pipelines which are connected in series, and the LED lamp tubes 8 are arranged inside and outside each group of spiral casing transparent pipelines so as to increase the photosynthesis area of algae, thereby effectively improving the carbon fixation efficiency of the algae.
The wavelength range set by the LED tube 8 is: supplementing the selected wavelength range of algae. So that the LED lamp tube 8 provides illumination with different wavelengths and the energy ratio of light with different wavelength ranges in different growth stages of algae.
The LED lamp tube 8 can provide illumination with different wavelengths for different growth stages of a certain alga. For example, at some stage, illumination of some wavelength is provided.
The energy, illumination time and illumination power of the LED lamp tube 8 are regulated and controlled, so that different light quantum flux densities and illumination periods can be provided for different growth stages of the spirulina and haematococcus pluvialis.
On the other hand, the design of the LED lamp tube 8 with the density matched with the specific illumination condition provides an omnibearing and multidimensional adjustable illumination environment for spirulina and haematococcus pluvialis, can completely replace the traditional natural illumination or fluorescent lamp illumination, and overcomes the adverse effects of the natural illumination on conditions such as weather, seasons, sunshine time, cultivation pond depth and the like.
The spiral casing algae photosynthetic reactor adopts a novel casing structure, and the spiral algae is cultivated in the outer pipe of the reactor, and because the light of the inner pipe is blocked, haematococcus pluvialis which can still efficiently fix carbon under weak light is adopted. The novel series structure is adopted, 2-3 reactors are connected in series, and gas is absorbed and purified by the first reactor and then sequentially passes through all the reactors to be discharged.
The spirulina photosynthetic reactor 9 is made of polycarbonate, and the outer tube of the spirulina photosynthetic reactor 9 has the following dimensions: the diameter of the inner tube of the spiral casing algae photosynthetic reactor 9 is 20mm-1000mm, the diameter of the outer tube is 40mm-2000mm, the length is 3000mm, the width is 400mm, and the height is 2000mm
The polycarbonate material is selected, and has the advantages of low toxicity, moderate mechanical strength, good chemical stability and the like, and because the sunlight contains a large amount of UV-B, PCI-P is preferably selected for protecting algae cells from ultraviolet damage, and the material has the advantages of good lighting, excellent heat preservation performance, light weight, high strength, strong puncture resistance and damage resistance, easy design and modeling, long service life and the like, and has more excellent performance.
The air outlet valve 10 is communicated with the tail end of the spiral casing algae photosynthetic reactor 9 and the front end of the atmosphere treatment plant and is used for discharging the gas in the reactor out of the spiral casing algae photosynthetic reactor 9.
The gas conveying pipeline is used for flowing and conveying smoke, adopts a medical silicone tube, has the characteristics of high temperature resistance, weak acid and alkali resistance, pressure resistance, no toxicity, no peculiar smell and the like, thereby ensuring the cleanness of a gas supply source and isolating the pollution of the microalgae caused by mixed impurities in the gas supply source.
The spirulina photosynthetic reactor 9 and the algae liquid filtering and collecting mechanism 12 are connected through a circulating confluence injection pipeline 11, an algae liquid automatic filter is arranged in the algae liquid filtering and collecting mechanism 12 and is used for recycling microalgae in the utilized algae liquid, a polyacrylonitrile-based membrane is used for achieving interception of microalgae cells and harvesting and separating the microalgae, and the circulating confluence injection pipeline 11 is used for receiving the algae liquid used in the spirulina photosynthetic reactor 9 and recycling the algae liquid.
The gas flowmeter 3 is used for monitoring the flow of the entering smoke so as to realize the real-time regulation and control of the flow of the smoke and avoid the influence on the treatment efficiency of the gas caused by the too fast or too slow flow rate of the smoke.
The double-pipe heat exchanger 4 is used for pre-cooling the entered factory flue gas, and reducing the flue gas with excessive temperature to a temperature range suitable for survival of algae through heat exchange.
The air compressor 5 is used for providing the driving force of gas flow, and the air compressor air storage tank 6 is used for temporarily storing the flue gas.
The data acquisition controller 14 is respectively connected with signals among the safety valve 1, the air inlet valve 2, the gas flowmeter 3, the double-pipe heat exchanger 4, the air compressor 5, the air compressor air storage tank 6, the LED lamp tube 8, the spiral casing algae photosynthetic reactor 9, the air outlet valve 10, the circulating confluence injection pipeline 11, the algae liquid filtering and collecting mechanism 12 and the water outlet valve 13 for integral monitoring and regulation. The data acquisition controller 14 comprises a pressure sensor, a temperature sensor, a light intensity sensor, a pH sensor, a liquid level sensor and a temperature control module;
at least one pressure probe is arranged in the air storage tank 6 of the air compressor, the pressure probe is connected with a pressure sensor, and the operation safety of the air storage tank 6 of the air compressor is ensured through real-time monitoring;
at least one temperature probe is arranged in the sleeve heat exchanger 4, and the temperature probe is connected with the temperature sensor;
at least one light intensity probe is arranged in the spiral casing algae photosynthetic reactor 9 and connected with the light intensity sensor, and is used for adjusting and maintaining the optimal light intensity of algae liquid in real time;
at least one pH probe is arranged in a closed reactor tank body arranged in the spiral casing algae photosynthetic reactor 9, and the pH probe is connected with a pH sensor outside the closed reactor tank body through a circuit and is used for detecting the rise or fall of the pH value in real time so as to maintain the optimal pH value of algae liquid;
the algae liquid filtering and collecting mechanism 12 is internally provided with at least one liquid level probe which is connected with the liquid level sensor and is used for monitoring the liquid level of the algae liquid in real time so as to regulate the discharge of the algae liquid in real time;
the inside of the spiral casing algae photosynthetic reactor 9 is also provided with a temperature control module for guaranteeing the optimal temperature range of algae liquid.
The invention adopts an air supply mode and an alternate ventilation operation mode, and the biomass of algae cells is obviously increased by adopting the method. The alternative ventilation reduces the ventilation quantity of the smoke, so that the accumulation quantity of harmful substances in the algae liquid is reduced. And the alternating ventilation increases the pH fluctuation range of the algae liquid, the pH value is up and down fluctuated between 8.4 and 10, the average pH value of the algae liquid is obviously improved compared with the continuous ventilation, and the growth of spirulina is facilitated. Thus, both biomass and yield of alternate ventilation are superior to continuous ventilation.
The invention adopts a closed microalgae photosynthetic organism reaction system, fully uses the principle of microalgae photosynthetic reaction, combines the physiological characteristics of cells, applies biological environment theory and modern biological new technology, adopts PCI-P, has the advantages of good lighting, excellent heat preservation performance, light weight, high strength, strong puncture resistance and damage resistance, easy design and modeling, long service life and the like, has more excellent performance, and can directly form a modern production workshop.
The invention fully optimizes the utilization of light energy, temperature and nutrients in microalgae production, including pH regulation, oxygen discharge, carbon dioxide supply, temperature control of pipelines and other algae cell growth conditions, comprehensively overcomes the phenomena of large occupied area, high energy consumption, low yield and serious pollution in microalgae production, breaks through the obstacle that a photosynthetic bioreactor cannot be upgraded and amplified and used for working production of large biomass under various experimental conditions in China, realizes the omnibearing utilization of natural light, adopts an auxiliary light source to supplement light when the natural light is insufficient, achieves the purpose of saving energy, enables the culture solution to flow up and down in the pipelines, enables algae cells to be in a high-frequency period, enables the culture solution to be circularly and continuously cultured, can stop the infection of all external foreign organisms and various chemical pollution factors, and is particularly suitable for large-scale industrialized production of high-grade foods and medical algae products.
When the device is specifically used, smoke discharged by a factory enters the system through the air inlet valve 2, the smoke entering flow is controlled through the air flowmeter 3, and the high-temperature smoke reaches the purpose of cooling through the double-pipe heat exchanger 4, so that the smoke can reach the proper survival temperature range of microalgae.
And then the flue gas enters an air compressor 5 for providing forward power for the flue gas through a flue gas pipeline for flue gas compression, the compressed flue gas enters a spiral casing algae photosynthetic reactor 9 with LED lamp tubes 8 arranged outside the inside of a spiral pipe through the flue gas pipeline after entering an air storage tank 6 of the air compressor, and the spiral casing algae photosynthetic reactor 9 is internally provided with spiral algae cultured by sewage in advance, an outer pipe of the spiral casing and haematococcus pluvialis, an inner pipe of the spiral casing, and the flue gas can be immediately absorbed and treated by algae after entering.
The spiral casing algae photosynthetic reactor 9 is formed by connecting a plurality of reactors in series, and a plurality of groups of reactors connected in series are used for treating the flue gas side by side, so that the flue gas treatment efficiency can be improved.
The treated flue gas is discharged to a factory for further treatment through an air outlet valve 10, and the utilized algae liquid enters an algae liquid filtering and collecting mechanism 12 for filtering and recycling through a circulating confluence injection pipeline 11. The treated sewage is discharged through the water outlet valve 13 and then sent to a sewage treatment plant for further subsequent treatment. All the processes are performed under the real-time monitoring of the data acquisition controller 14 so as to perform efficient and stable feedback adjustment on the system.
The design objective of this work is to realize efficient green emission reduction, utilizes novel sleeve pipe technique make full use of the fixed carbon effect of algae, and is energy-concerving and environment-protective, can reduce greenhouse gas, alleviates greenhouse effect to a certain extent, and when realizing fixed carbon emission reduction moreover, utilizes municipal wastewater, mill waste gas to carry out the cultivation of little algae, has effectively realized handling once more and utilizing of pollutant. Algae biomass energy has huge potential. Microalgae have high oil content, short growth period and high oil area yield, are biological resources which have the highest potential to replace petroleum, and are beneficial to alleviating the fossil energy crisis faced by human beings in the current society.
The invention provides the best growth environment for microalgae through the feedback adjustment of the data acquisition controller 14, can lead algae cells to actively grow and reproduce, increases the cell biomass quickly, circulates for 24 hours repeatedly, and is discharged through a circulating confluence injection pipeline when the algae cells reach a certain concentration, filtered into algae mud, and the filtered solution still contains a plurality of nutrient elements, thus being capable of being used as an inoculum for the next round of microalgae culture or leaving the system for secondary production and utilization.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a utilize sewage to cultivate spiral sleeve type reactor that algae carried out carbon fixation and emission reduction, its characterized in that includes relief valve (1), admission valve (2), gas flowmeter (3), double pipe heat exchanger (4), air compressor machine (5), air compressor machine gas holder (6), LED fluorescent tube (8), spiral sleeve algae photosynthetic reactor (9), air outlet valve (10), circulation confluence injection pipeline (11), algae liquid filtration collection mechanism (12), play water valve (13) and data acquisition controller (14), admission valve (2), gas flowmeter (3), double pipe heat exchanger (4), air compressor machine (5), air compressor machine gas holder (6), relief valve (1), spiral sleeve algae photosynthetic reactor (9) and air outlet valve (10) are connected in order through the gas delivery pipeline between, through circulation confluence injection pipeline (11) between spiral sleeve algae photosynthetic reactor (9) and the algae liquid filtration collection mechanism (12), LED fluorescent tube (8) are used for supplying light for the algae that stores in spiral sleeve algae photosynthetic reactor (9), data acquisition controller (14) respectively with relief valve (1), gas valve (3), air compressor machine (6), air flowmeter (6), air compressor machine (6) and air flowmeter (10) are connected in order to the gas The LED lamp tube (8), the spiral casing algae photosynthetic reactor (9), the air outlet valve (10), the circulating confluence injection pipeline (11), the algae liquid filtering and collecting mechanism (12) and the water outlet valve (13) are connected by signals to carry out integral monitoring and regulation.
2. The spiral sleeve type reactor for carbon fixation and emission reduction by utilizing sewage to cultivate algae according to claim 1, wherein the spiral sleeve type algae photosynthetic reactor (9) consists of a plurality of groups of spiral sleeve type transparent pipelines connected in series, and each group of spiral sleeve type transparent pipelines is internally and externally provided with LED lamp tubes (8).
3. A spiral sleeve reactor for carbon sequestration and emission reduction using sewage culture algae according to claim 1, characterized in that the spiral sleeve photosynthetic reactor (9) is made of polycarbonate, the outer tube of the spiral sleeve photosynthetic reactor (9) has the dimensions: the radius of the inner tube of the spiral casing algae photosynthetic reactor (9) is 20mm-1000mm, the radius of the outer tube is 40mm-2000mm, the length is 3000mm, the width is 400mm, and the height is 2000mm.
4. The spiral sleeve type reactor for carbon sequestration and emission reduction by using sewage to cultivate algae according to claim 1, wherein the gas delivery pipeline is used for flow transmission of flue gas and is a medical silicone tube.
5. The spiral sleeve type reactor for carbon sequestration and emission reduction by using sewage to culture algae according to claim 1, wherein an automatic algae liquid filter is arranged in the algae liquid filtering and collecting mechanism (12) and is used for recovering microalgae in the used algae liquid, and a polyacrylonitrile-based membrane is used for intercepting microalgae cells for harvesting and separating the microalgae.
6. The spiral sleeve type reactor for carbon fixation and emission reduction by utilizing sewage to cultivate algae according to claim 1, wherein the gas flowmeter (3) is used for monitoring the flow of the entering smoke so as to realize real-time regulation and control of the flow of the smoke and avoid the phenomenon that the flow rate of the smoke is too fast or too slow so as to influence the treatment efficiency of the gas.
7. A spiral sleeve reactor for carbon sequestration and emission reduction using wastewater culture algae according to claim 1, characterized in that the sleeve heat exchanger (4) is used for pre-cooling the incoming plant fumes, reducing the fumes at too high temperatures by heat exchange to a temperature range suitable for algae survival.
8. A spiral sleeve type reactor for carbon sequestration and emission reduction by using sewage to cultivate algae according to claim 1, characterized in that the air compressor (5) is used for providing the driving force of gas flow, and the air compressor air storage tank (6) is used for temporarily storing flue gas.
9. The spiral sleeve type reactor for carbon fixation and emission reduction by utilizing sewage to cultivate algae according to claim 1, wherein the circulating confluence injection pipeline (11) is an algae liquid receiving end of the spiral sleeve type algae photosynthetic reactor (9) and is used for receiving used algae liquid in the spiral sleeve type algae photosynthetic reactor (9) and recycling the algae liquid.
10. The spiral sleeve type reactor for carbon sequestration and emission reduction using wastewater culture algae according to claim 1, wherein the data acquisition controller (14) comprises a pressure sensor, a temperature sensor, a light intensity sensor, a pH sensor, a liquid level sensor and a temperature control module;
at least one pressure probe is arranged in the air storage tank (6) of the air compressor, the pressure probe is connected with a pressure sensor, and the operation safety of the air storage tank (6) of the air compressor is ensured through real-time monitoring;
at least one temperature probe is arranged in the sleeve heat exchanger (4), and the temperature probe is connected with the temperature sensor;
at least one light intensity probe is arranged in the spiral casing algae photosynthetic reactor (9), and the light intensity probe is connected with the light intensity sensor and is used for adjusting and maintaining the optimal light intensity of algae liquid in real time;
at least one pH probe is arranged in a closed reactor tank body arranged in the spiral casing algae photosynthetic reactor (9), and the pH probe is connected with a pH sensor outside the closed reactor tank body through a circuit and is used for detecting the rise or fall of the pH value in real time so as to maintain the optimal pH value of algae liquid;
at least one liquid level probe is arranged in the algae liquid filtering and collecting mechanism (12), and the liquid level probe is connected with the liquid level sensor and is used for monitoring the liquid level of the algae liquid in real time so as to regulate the discharge of the algae liquid in real time;
and a temperature control module is further arranged in the spiral casing algae photosynthetic reactor (9) and used for guaranteeing the optimal temperature range of algae liquid.
CN202310164423.6A 2023-02-25 2023-02-25 Spiral sleeve type reactor for carbon fixation and emission reduction by utilizing sewage to cultivate algae Pending CN116083218A (en)

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