CN106268246A - Method for reducing carbon dioxide emission and green energy system thereof - Google Patents

Abstract

The invention relates to a method for reducing carbon dioxide emission and a green energy system thereof, which are characterized in that industrial waste gas is collected and contains carbon dioxide gas with the concentration of more than 5000ppm and accessible lung particles (PM2.5), the industrial waste gas is homogenized and then subjected to a gas washing preparation process to obtain carbonated water and a residual substance, the carbonated water is utilized to circularly flow to breed microalgae, the microalgae is a microalgae species grown in the carbonated water until the microalgae grows and is harvested, and finally the microalgae is refined to produce biodiesel through a wall breaking and lipid transferring preparation process. Therefore, the invention can greatly reduce the carbon dioxide emission of the industrial waste gas, and can further utilize the microalgae to generate the biodiesel with economic benefit for profit or other purposes.

Description

Method for reducing carbon dioxide emission and its green energy system

technical field

The invention belongs to the field of air pollution reduction and renewable energy manufacturing equipment, in particular to a method capable of effectively reducing carbon dioxide emissions and its green energy system, which uses carbonated water produced by washing carbon dioxide particles in industrial waste gas, Technology to grow microalgae and produce biodiesel.

Background technique

According to, in recent years, due to the increase of carbon dioxide emissions caused by industrial waste gas and automobile and motorcycle waste gas, the greenhouse effect has deteriorated year by year, seriously affecting the ecological phenomenon of the entire earth. It is hoped that the greenhouse gas content in the atmosphere will be stabilized at an appropriate level or even reduced, so as to ensure the smooth adaptation of the ecosystem, safe food production and sustainable economic development.

At present, with the improvement of technology and the increasing popularity of electric vehicles or gasoline-powered vehicles, traditional fossil fuel vehicles are replaced year by year, and it is expected to gradually solve the impact caused by vehicle abandonment; however, for the industrial waste gas produced in the manufacturing industry However, the problem has not been effectively solved, especially when dealing with industrial waste gas, it will not only increase the cost of building decontamination equipment, but the pollution that can be solved is quite limited. In addition to the worldwide energy shortage, the underground oil Resources are limited, and mining is turbulent due to climatic factors, international political and economic factors, and it has also caused the era of high global oil prices and a new energy crisis. Therefore, bio-energy has gradually received attention and development. Biomass energy such as energy crop harvesting, lignocellulosic derivation plan, biomass storage-like pressurized oxygen fermentation and purification technology has also become a very eye-catching technology; among them, algae cultivation and pyrolysis are used as methods of biomass energy output The most eye-catching is that due to the gradual warming of the global environment, algae have proliferated in large numbers. If the algae can be properly cultivated, they can produce biodiesel, alcohol, and algae to grow food. Not only can the existing food crops, such as: The production of biodiesel from wheat or corn can reduce the famine problem caused by food waste, and if the algae produced by global warming can be effectively used to produce energy, it can also achieve the effect of reducing carbon and protecting the environment and ecology. The best energy accretion strategy seen so far.

However, at present, the technology of cultivating algae is mainly based on open-air cultivation, that is, several cultivation ponds are set outdoors, and algae are placed in the cultivation ponds. This kind of algae is only suitable for cultivation food such as health food and algae blocks. Algae are cultivated in the open air, and it is not easy to sort and harvest them. They are mixed with strong fat plants (that is, adult plants), weak plants with diseases and insect pests, old plants that are gradually aging, and young plants that have not yet grown up. Many algae lipid strains obtained at the same time are too old, diseased or too young to affect the efficiency of subsequent production operations. In addition, open-air cultivation will also be affected by weather factors such as the rainy season, which will cause the nutrients to be diluted and diluted, resulting in insufficient growth nutrients. If the temperature difference between the weather is too large, such as too cold or too hot, it will cause damage to the growth of algae.

In view of this, the inventor has been engaged in algae cultivation for many years and referred to patent documents of various countries such as: China Taiwan Invention Patent No. I369399 "A device for carbon dioxide capture equipment" and U.S. Invention No. 7763457 "High photoefficiency microalgae bioreactors" , U.S. Invention No. 5534417 "Microorganism growth apparatus", U.S. Patent Publication No. 20080220486 "Method for growing photosynthetic organisms" patent application, and the inventor's Taiwan Invention Patent No. I342185 "cultivator for cultivating algae", etc., After continuous improvement and design, a set of green energy systems that can use microalgae as a method to reduce carbon dioxide emissions has been integrated, hoping to contribute to environmental protection and enhance its economic value.

Contents of the invention

In view of this, an object of the present invention aims to provide a method for reducing carbon dioxide emissions, thereby utilizing the carbon dioxide contained therein and respirable lung particulate matter (PM2.5) to cultivate microalgae after the factory waste gas is collected, further The emission of carbon dioxide and PM2.5 of the industrial waste gas is greatly reduced, so that the microalgae can generate economically beneficial biodiesel for profit or other purposes.

In order to achieve the above-mentioned purpose, the method for reducing carbon dioxide emissions of the present invention comprises the steps of: collecting an industrial waste gas, and making the industrial waste gas contain carbon dioxide gas and particulate matter (PM 2.5) with a concentration greater than 5000ppm; After the industrial waste gas is washed with water, a carbonated water and a residual substance are obtained; the carbonated water is used to circulate and cultivate a microalgae until the microalgae grows; and the microalgae is harvested to extract a quality diesel oil. Wherein, the particulate matter that can enter the lung refers to the particulate matter in the atmosphere with a diameter less than or equal to 2.5 microns.

In one implementation, the method for reducing carbon dioxide emissions of the present invention further includes a purification step, which uses a high-temperature metal catalyst to remove the residual substance remaining after the gas washing preparation process, so as to remove the residual substance from the exhaust gas It will greatly improve the cleaning effect of the gas. Moreover, in order to effectively cultivate the microalgae, the pH value of the carbonated water is between 6.9 and 3, which is acidic, and the carbonated water creates an environment for the microalgae to grow more easily.

Moreover, the present invention further provides a green energy system using the aforementioned method for reducing carbon dioxide emissions, which includes: a liquefaction unit including a box, a homogeneous filter screen and a water washing device, and the box has an air inlet , an exhaust port, a liquid storage tank and a liquid outlet, the homogeneous filter is installed in the box and is located on one side of the air inlet, so that the industrial waste gas is introduced into the box through the air inlet To perform homogenization treatment, the water washing device is installed in the box and is located on one side of the homogeneous filter screen, so as to wash the industrial waste gas after homogenization treatment, so that the carbonated water can be stored placed in the liquid storage tank, and the residual substance is discharged from the exhaust port; a culture unit includes a central water tower, a pump and a circulation pipeline, and the central water tower is arranged on one side of the liquefaction unit at intervals and One end of it is connected with the liquid outlet, the other end of the central water tower is connected with the pump, and the pump is connected with the circulation pipeline, and a microalgae is placed in the circulation pipeline, through which the pump can sending the carbonated water into the circulation pipeline for circulation to provide the culture environment required by the microalgae; and an extraction unit including a plurality of pressurized tanks and mixing tanks, the extraction unit is used to place the microalgae, The biodiesel is produced through a transfatting procedure.

In one embodiment, the green energy system for reducing carbon dioxide emissions of the present invention, wherein a first detection unit is provided at the air inlet, and a second detection unit is provided at the air outlet to detect the industrial The value of the exhaust gas. Moreover, both the first detection unit and the second detection unit are PM concentration detectors, which detect the PM concentration of the industrial waste gas after water washing, and if it is not completely washed, it can continue to be washed with water in a circular manner. In addition, a third detection unit is provided in the liquid storage tank to detect the pH value of the carbonated water, and the third detection unit is a liquid pH value detector to prevent the pH value of the carbonated water from not meeting the farming needs.

Description of drawings

Fig. 1 is a flow chart of the steps of a preferred embodiment of the present invention;

Fig. 2 is a configuration diagram of a preferred embodiment of the present invention;

Fig. 3 is a schematic structural view of the liquefaction unit in a preferred embodiment of the present invention.

Description of reference signs: steps S1 to S5; 1 green energy system for reducing carbon dioxide emissions; 11 liquefaction unit; 111 box; 1111 air inlet; 1112 exhaust port; 1113 liquid storage tank; Filter screen; 113 Washing device; 12 Breeding unit; 121 Central water tower; 122 Pump; 123 Circulation pipeline; 13 Extraction unit; 131 Booster tank; ; 16 third detection unit; 2 industrial waste gas; 3 carbonated water; 4 residual substances; 5 microalgae; 6 biodiesel.

detailed description

In order to enable your review committee members to clearly understand the content of the present invention, only the following descriptions are used together with the drawings, please refer to them.

Please refer to FIG. 1 , which is a flow chart of steps in a preferred embodiment of the present invention. As shown in the figure, the method for reducing carbon dioxide emissions of the present invention, the steps during its implementation include:

S1: Collect an industrial waste gas, and make the industrial waste gas contain carbon dioxide gas with a concentration greater than 5000ppm and particulate matter (PM 2.5) that can enter the lungs; the industrial waste gas generally refers to the waste gas generated by various industries, and its usual possible implementation methods , set up a connecting pipeline at the outlet of the traditional chimney or discharge device to prevent the industrial waste gas from being discharged into the atmosphere without any treatment. The particulate matter that can enter the lungs refers to particulate matter with a diameter less than or equal to 2.5 microns in the atmosphere, which is commonly known as PM2.5.

S2: After homogenization treatment of the industrial waste gas, a carbonated water and a residual substance are obtained through the gas washing preparation process; homogenization treatment refers to the homogenization of the industrial waste gas and the removal of impurities with large particles. The gas washing preparation process uses the contact force between the gas and the liquid, and through gravity, inertial force, heat and electrostatic force, the particulate pollutants contained in the gas are sent to the liquid to achieve the purpose of cleaning. In the case of pollutants, turbulent flow and molecular diffusion are used to transmit odorous substances into the liquid to achieve the purpose of cleaning, and the liquid produced during the gas washing preparation process is the carbonated water.

S3: Use the carbonated water to circulate and cultivate a microalgae until the microalgae grows; it should be noted that the microalgae selected in the present invention are obtained through screening and special cultivation, and they especially like the environment of the carbonated water growth in middle-aged, and the pH value of the carbonated water is between 6.9 and 3, which is acidic. After proper pH value control and nutrient addition, and through the closed and special circulating water pipeline design used in the present invention, it can not only simulate A growth environment suitable for the microalgae is established, and the microalgae grows without being polluted by the outside world. It should be noted that the circulating water pipeline is made of light-permeable plastic pipe material, so placing it in an environment exposed to sunlight can also make the microalgae grow by absorbing the energy of sunlight.

S4: Harvest the microalgae to extract a high-quality diesel oil; when the microalgae in the above steps grow to a moderate size, it can be harvested, and the harvesting method is also quite simple, only need to install one on the closed circulating water pipeline At the outlet, the microalgae inside the pipeline is taken out by using the pressurized water flow; finally, when extracting, different extraction methods will be selected according to the type and size of the microalgae. In the lipid preparation process, the cell wall of the microalgae is first destroyed by means of grinding, ultrasonic waves, and pressure, and then the oil is extracted, and then the biodiesel is produced by translipidizing.

In addition, the method for reducing carbon dioxide emissions of the present invention further includes a S5: purification step, which uses a high-temperature metal catalyst to remove the residual substance remaining after the gas washing preparation process, or can also use the output if necessary Biodiesel is used as fuel, which can save additional processing costs on the one hand, and make more effective use of the system on the other hand.

Furthermore, please refer to FIGS. 2 and 3 , which are schematic configuration diagrams of a preferred embodiment of the present invention and a schematic structural diagram of the liquefaction unit. As shown in the figure, according to the above-mentioned method for reducing carbon dioxide emissions, the inventor specially designed a corresponding green energy system 1 for reducing carbon dioxide emissions, which mainly includes a liquefaction unit 11 , a cultivation unit 12 and an extraction unit 13 .

Wherein the liquefaction unit 11 includes a box body 111, a homogeneous filter screen 112 and a washing device 113, and the box body 111 has an air inlet 1111, an exhaust port 1112, a liquid storage tank 1113 and a liquid outlet port 1114, the homogeneous filter screen 112 is installed inside the box body 111 and is located on the side adjacent to the air inlet 1111, so that the industrial waste gas 2 can be introduced into the box body 111 through the air inlet 1111 and can be homogenized Homogenization treatment, the water washing device 113 is installed in the box 111 and is located on one side of the homogeneous filter screen 112, so that the homogenized industrial waste gas 2 is subjected to a gas water washing preparation process to make the carbonated water 3 Stored in the liquid storage tank, the residual substance 4 is discharged through the exhaust port 1112 . It should be noted that the residual substance 4 can be removed by using a high-temperature metal catalyst, so that the air discharged to the atmosphere is cleaner. Wherein, a first detection unit 14 is provided at the air inlet 1111 , and a second detection unit 15 is provided at the air outlet 1112 to detect various values of the industrial waste gas 2 . For example: the first detection unit 14 and the second detection unit 15 are both PM concentration detectors, and can be used to confirm the removal effect after gas washing. Alternatively, a third detection unit 16 is provided in the liquid storage tank 1113 , and the third detection unit 16 is a liquid pH value detector for detecting the pH value of the carbonated water 3 .

The cultivation unit 12 then comprises a central water tower 121, a pump 122 and a circulation pipeline 123, the central water tower 121 is arranged at intervals on one side of the liquefaction unit 11 and one end thereof is connected with the liquid outlet 1114, the The other end of the central water tower 121 is connected with the pump 122, and the pump 122 is connected with the circulation pipeline 123. A microalgae 5 is placed in the circulation pipeline 123, and the carbonated water can be obtained by the pump 122. 3 into the circulation pipeline 123 for circulating flow to provide the culture environment required by the microalgae 5, wherein the circulation pipeline 123 is connected end to end by multiple sections of transparent straight pipes and 180-degree bent pipes The large-area single-layer design made by this method, because the circulation pipeline 123 is designed to be light-transmitting, therefore, the circulation pipeline 123 can also be arranged in a multi-layer stacked manner to save the space required for arrangement and increase production capacity. Moreover, the central water tower 121 is designed as a temporary storage area for allocating nutrients needed by the microalgae 5 , especially adding nitrogen-containing fertilizers to accelerate and optimize the growth of the microalgae 5 .

The extraction unit 13 includes a plurality of pressurized tanks 131 and a mixing tank 132. The extraction unit 13 is used for placing the harvested microalgae 5 to produce the biodiesel 6 through a translipidation process. At present, the extraction method adopted in the present invention is to use pressure to break the wall, and then stir and add n-hexane to make it transfat to produce the biodiesel 6 .

However, the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, those with ordinary knowledge in the technical field, or those who are familiar with this technology, can make equivalent or easy changes Alternatively, all equivalent changes and modifications made without departing from the spirit and scope of the present invention shall fall within the patent scope of the present invention.

Claims (9)

1. the method reducing CO2 emission, it is characterised in that its step includes:

Collect an industrial waste gas, and make this industrial waste gas contain the concentration carbon dioxide more than 5000ppm and can enter Lung particulate matter (PM2.5)；

Homogenize after processing this industrial waste gas, then obtain a carbonated water and a residue through gas washing preparation process Matter；

Use this carbonated water recirculation flowing cultivation one microalgae, until this microalgae grows up to；And

This microalgae of harvest and extract a biodiesel.

2. the as claimed in claim 1 method reducing CO2 emission, wherein this can enter lung particulate matter and refers to air The middle diameter particulate matter less than or equal to 2.5 microns.

3. the method reducing CO2 emission as claimed in claim 1, wherein further includes a purifying step, its profit This residual substance remaining after removing this gas washing preparation process with the metal solvent of high temperature.

4. the as claimed in claim 1 method reducing CO2 emission, wherein, the pH value of this carbonated water between Acidity is presented between 6.9～3.

5. use a green energy system for the method reducing CO2 emission as claimed in claim 1, comprising:

One liquefaction unit, includes a casing, a homogenizing filter screen and a water washing device, and this casing have an air inlet, One air vent, a reservoir and a liquid outlet, this homogenizing filter screen is installed in this casing and is positioned at the side of this air inlet, Can carry out the process that homogenizes after making this industrial waste gas import this casing via this air inlet, this water washing device is installed on this In casing and be positioned at the side of this homogenizing filter screen, so that gas washing system will be carried out through this industrial waste gas processed that homogenizes Standby process, makes this carbonated water store in this reservoir, and this residual substance is then discharged by this air vent；

One cultivation unit, includes central authorities' water tower, a pumping and a circulation line, and this is located in this central authorities' water tower interval The side of liquefaction unit and its one end are connected with this liquid outlet, and the other end of this central authorities' water tower is connected with this pumping, This pumping is connected with this circulation line again, is placed with a microalgae in this circulation line, can be by this carbonic acid by this pumping Water is circulated flowing to provide the breeding environment needed for this microalgae in sending into this circulation line；And

One extraction cells, includes multiple supercharging groove and agitator, and this extraction cells is for placing this microalgae, by turning fat Program and produce this biodiesel.

6. the green energy system reducing CO2 emission as claimed in claim 5, wherein, is provided with one at this air inlet One second detecting unit it is provided with, to detect the numerical value of this industrial waste gas at first detecting unit, and this gas outlet.

7. as claimed in claim 6 reduce CO2 emission green can system, wherein, this first detecting unit and This second detecting unit is PM concentration detecting device.

8. the green energy system reducing CO2 emission as claimed in claim 5, wherein, is provided with one in this reservoir 3rd detecting unit, to detect the pH value of this carbonated water.

9. the green energy system reducing CO2 emission as claimed in claim 8, wherein, the 3rd detecting unit is Liquid acid base number detector.