CN101721909A - Process for three-dimensional tower type CO2 emission reduction by using optical microbial method - Google Patents
Process for three-dimensional tower type CO2 emission reduction by using optical microbial method Download PDFInfo
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- CN101721909A CN101721909A CN201010000852A CN201010000852A CN101721909A CN 101721909 A CN101721909 A CN 101721909A CN 201010000852 A CN201010000852 A CN 201010000852A CN 201010000852 A CN201010000852 A CN 201010000852A CN 101721909 A CN101721909 A CN 101721909A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a process for three-dimensional tower type CO2 emission reduction by using an optical microbial method, which is characterized in that CO2 gas enters a cultivation tower shell from a CO2 gas inlet at the lower part of each tower segment, mass is three-dimensionally transferred through each layer of tower plate of the tower segment, a growing raw material of microalgae is provided, the oxygen generated by the microalgae is analyzed, and finally the oxygen is discharged through a tail gas outlet at the upper part of the tower segment; water containing microalgal seeds is added from a liquid inlet at the top of a cultivation tower, a cross flow flows through each layer of tower plate, a liquid lacking the microalgal seeds flows to the top of an ascension pipe from the bottom of the ascension pipe through a slot of the ascension pipe and a cap shield and is mixed, lifted and stirred with the CO2 gas flowing into the ascension pipe, and then the mixture is sprayed out from a cap shield hole to realize gas-liquid three-dimensional mass transfer; under the illumination of power supply light, the microalgae obtaining the growing raw material grow through the occurrence of aphotosynthesis, and the oxygen generated by the microalgae contained in the water is desorbed; and the liquid containing the microalgae flows to a liquid outlet at the bottom of the cultivation tower from the liquid inlet at the top of the cultivation tower through a down-flow pipe, most of the obtained grown microalgal liquid is separated to be used as a biological raw material, and after a nourishment and the water are added into a small part of the microalgal liquid, the mixture is recirculated to the liquid inlet at the top of the cultivation tower.
Description
One, technical field
The present invention relates to a kind of optical microbial method three-dimensional tower type and reduce discharging CO
2Technology, it belongs to field of environment protection.
Two, background technology
When previous important environmental problem is global warming, its immediate cause is CO in the atmosphere
2Increase with other greenhouse gases concentration, and in all greenhouse gases, CO
2Contribution to greenhouse effects accounts for 60%.Reduce greenhouse gas emission, carry out CO
2Capture and seal up for safekeeping and stand in the breach.Although the Kyoto Protocol phase I does not require China and reduces discharging, can not cause direct influence to China's economy.But China's second stage can not be enjoyed the row's of exempting from treatment again, if hold fire, world's emission reduction tasks also can not be finished.Has only leading exploitation CO
2Capture and seal technology up for safekeeping and equipment just can be provided for a rainy day as technological reserve, fulfil the solemn commitment of reduction of discharging simultaneously again guaranteeing that social economy increases.CO
2The technology of recovery technology mainly contains Physical Absorption method, chemical absorbing, film separation, freezing classification separation, molecular sieve adsorption, float stone absorption and little algae bioanalysis etc., but the first six kind method reclaims back CO
2Need seal up for safekeeping, utilize little algae bioanalysis can realize CO simultaneously
2Capture and fixing and by-product biomass energy, have environment, the energy and resource comprehensive effect.
Israel scim biotech company developed a new technology in 2007, utilized the carbon dioxide cultivating seaweed of power plant discharging, and then therefrom produced bio-fuel.They had set up tentative marine alga farm in an experimental farm in Ash clone power plant in 2004.This farm is made up of 8 marine alga ponds, takes up an area of 1/4 acre.Near the partial fume that discharges of a tame coal power generation factory be delivered directly in the marine alga pond, the carbon dioxide in the flue gas has not only promoted the growth of marine alga after being absorbed by marine alga effectively, has also reduced greenhouse gases simultaneously.Other harmful substances in the flue dust are then purified by a special filtration system.Through cultivating, the marine alga growing way is swift and violent, and output improves greatly, and this provides the raw material guarantee for produce bio-fuel with marine alga." emission production bio-fuel " technology of GreenFuel company adopts marine alga to power-plant flue gas and other CO
2The CO that discharge in the continuous blow-down source
2Carry out recycling.In Redhawk power plant, the pipeline of particular design is used to capture and transport the CO from chimney
2Emission is sent into the special container that contains marine alga.Exist under the sunlight conditions, marine alga consumes CO
2In case marine alga increases and obtains receipts, its starch just can be converted into ethanol, and its lipoid can be converted into biodiesel, and its albumen can be converted into domestic animal and use gourmet food simultaneously.
In the world, the artificial cultivation of micro-algae large-scale at present mainly contains open pond and closed photobioreactor two class modes.Open cultivation (as circulation runway pond) is simple relatively, investment is low, but this mode condition of culture variation greatly, and little algae productive rate is low, and has serious biological pollution.Closed photo bioreactor term perennate is long, can keep higher algae liquid concentration, can reduce the cost of gathering to a certain extent, can control condition of culture, to be easier to the productive rate controlling biological pollution, cultivate little algae higher, though investment cost is relatively large, become this field research and development main trend.
The closed photo bioreactor form mainly contains vertical pillar (as airlift reactor), tubular type, board-like and other specific type (as the optical fiber bioreactor) at present.Airlift reactor provides algae liquid mobilization force, helps molten carbon deoxidation, and less to the shear action of frond, and power consumption is also little, has solved dissolved oxygen accumulation problem.The unit volume productive rate and the caliber of tubular reactor have direct relation.The large volume productive rate is more little more for caliber.Reducing of caliber has negative effect to the amplification of reactor, major limitation the increase of cumulative volume of tubular type bioreactor.The plate-type reactor optical path length is too narrow, has limited the amplification potentiality of reactor widely.The wood of manufacturing into of optical fiber bioreactor is extremely expensive, is difficult to be applied to little algae at foreseeable future and commercially produces.
Three, summary of the invention
Purpose of the present invention provides a kind of optical microbial method three-dimensional tower type to reduce discharging CO with regard to being to avoid the weak point of above-mentioned technology
2Technology, main technique equipment is by CO
2Compositions such as gas inlet, breed tower shell, column plate, riser, calotte, downspout, downflow weir, dividing plate, tail gas outlet.CO
2Gas is by the CO of each tower pars infrasegmentalis
2The gas inlet enters the breed tower shell, by every layer of column plate solid mass-transferring of tower section, supplies with the micro algae growth raw material, resolves the oxygen that little algae produces, after the tail gas outlet discharge on tower section top; The water that contains little algae kind adds from the liquid inlet of culturing the top of tower, and every layer of column plate flow through in cross-flow, and the crack by riser and calotte flows to the CO that flows in riser top and the riser to the poor liquid that contains little algae kind from the riser bottom
2Gas mixes, promotes, stirs, and from the ejection of calotte hole, realizes the gas-liquid solid mass-transferring then; Under the illumination of power lights, little algae obtains growth raw material generation photosynthesis and obtains growth, and little algae contained in the water generates the oxygen desorb; The liquid that contains little algae flows to the liquid outlet of culturing the tower bottommost by downspout from the liquid inlet of culturing the top of tower, little algae liquid after obtaining growing is told as biological raw material by separation by major part, and the little algae liquid of small part adds and loops back the liquid inlet of culturing the top of tower behind nutriment and the water once more.
CO
218 ℃-45 ℃ of solid/liquid/gas reactions temperature, CO
2Concentration 0.2%-20%.
Culture tower and be divided into 2-20 tower section, each tower section 1-20 layer column plate of tower section.
Every layer of column plate liquid residence time is 5-180 minute.
Four, description of drawings
Accompanying drawing 1 is the process equipment structural representation of invention.
The drawing of accompanying drawing is established bright as follows:
1, CO
2Gas inlet 2, breed tower shell 3, tail gas outlet 4, dividing plate 5, column plate 6, riser 7, calotte 8, downflow weir 9, downspout 10, calotte hole 11, liquid outlet 12, liquid inlet 13, riser inlet 14, power lights
Below in conjunction with drawings and Examples in detail process characteristic of the present invention is described in detail.
Five, the specific embodiment
The present invention will be described in detail below in conjunction with accompanying drawing: CO
2Gas is by the CO of each tower pars infrasegmentalis
2Gas inlet (1) enters cultures tower shell (2), by every layer of column plate solid mass-transferring of tower section, supplies with the micro algae growth raw material, resolves the oxygen that little algae produces, after the tail gas outlet (3) on tower section top discharge; The water that contains little algae kind adds from the liquid inlet (12) of culturing the top of tower, every layer of column plate flow through in cross-flow, and the poor liquid that contains little algae kind flows to the CO of inflow in riser (6) top and the riser (6) by the crack of riser (6) and calotte (7) from riser (6) bottom
2Gas mixes, promotes, stirs, and from calotte hole (10) ejection, realizes the gas-liquid solid mass-transferring then; Under the illumination of power lights (14), little algae obtains growth raw material generation photosynthesis and obtains growth, and little algae contained in the water generates the oxygen desorb; The liquid that contains little algae flows to the liquid outlet (11) of culturing the tower bottommost by downspout (9) from the liquid inlet (12) of culturing the top of tower, little algae after obtaining growing is by centrifugation, ripe algae is told as biological raw material, and little algae of prematurity and water add nutriment and loops back the liquid inlet (12) of culturing the top of tower once more.
CO
218 ℃-45 ℃ of solid/liquid/gas reactions temperature, CO
2Concentration 0.2%-20%.
Culture tower and be divided into 2-20 tower section, each tower section 1-20 layer column plate (5) of tower section.
Every layer of column plate (5) liquid residence time is 5-180 minute.
A kind of optical microbial method three-dimensional tower type of the present invention reduces discharging CO2Technology have following outstanding advantage: (1) CO2Gas subsection-inlet and discharging have improved CO2The reduction of discharging rate of gas has guaranteed again the growth cycle of little algae; (2) advantage of the comprehensive vertical pillar (such as airlift reactor) of tower-type microalgae culturing device adopting, tubular type and plate-type reactor, the three-dimensional layout, floor space is little, help molten carbon deoxidation, and the shear action to frond is littler, power consumption is also little, has solved dissolved oxygen accumulation problem, is easy to amplify and batch production production.
Claims (4)
1. an optical microbial method three-dimensional tower type reduces discharging CO
2Technology, main technique equipment is by CO
2Compositions such as gas inlet, breed tower shell, column plate, riser, calotte, downspout, downflow weir, dividing plate, tail gas outlet, its technical characterictic is CO
2Gas is by the CO of each tower pars infrasegmentalis
2The gas inlet enters the breed tower shell, by every layer of column plate solid mass-transferring of tower section, supplies with the micro algae growth raw material, resolves the oxygen that little algae produces, after the tail gas outlet discharge on tower section top; The water that contains little algae kind adds from the liquid inlet of culturing the top of tower, and every layer of column plate flow through in cross-flow, and the crack by riser and calotte flows to the CO that flows in riser top and the riser to the poor liquid that contains little algae kind from the riser bottom
2Gas mixes, promotes, stirs, and from the ejection of calotte hole, realizes the gas-liquid solid mass-transferring then; Under the illumination of power lights, little algae obtains growth raw material generation photosynthesis and obtains growth, and little algae contained in the water generates the oxygen desorb; The liquid that contains little algae flows to the liquid outlet of culturing the tower bottommost by downspout from the liquid inlet of culturing the top of tower, little algae liquid after obtaining growing is told as biological raw material by separation by major part, and the little algae liquid of small part adds and loops back the liquid inlet of culturing the top of tower behind nutriment and the water once more.
2. reduce discharging CO according to a kind of optical microbial method three-dimensional tower type that claim 1 provided
2Technology, it is characterized in that CO
218 ℃-45 ℃ of solid/liquid/gas reactions temperature, CO
2Concentration 0.2%-20%.
3. reduce discharging the technology of CO2 according to a kind of optical microbial method three-dimensional tower type that claim 1 provided, it is characterized in that culturing tower and be divided into 2-20 tower section, each tower section 1-20 layer column plate of tower section.
4. reduce discharging the technology of CO2 according to a kind of optical microbial method three-dimensional tower type that claim 1 provided, it is characterized in that every layer of column plate liquid residence time is 5-180 minute.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010000852A CN101721909A (en) | 2010-01-19 | 2010-01-19 | Process for three-dimensional tower type CO2 emission reduction by using optical microbial method |
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| CN201010000852A CN101721909A (en) | 2010-01-19 | 2010-01-19 | Process for three-dimensional tower type CO2 emission reduction by using optical microbial method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989263A (en) * | 2012-10-11 | 2013-03-27 | 田原宇 | Efficient radial flow adsorption tower |
| CN107840400A (en) * | 2017-12-14 | 2018-03-27 | 夏兴洪 | A kind of evaporator and its processing method for handling high salt high ammonia-nitrogen wastewater |
| CN115999316A (en) * | 2021-10-21 | 2023-04-25 | 中国石油化工股份有限公司 | Absorption stabilization process and absorption desorption coupling tower thereof |
-
2010
- 2010-01-19 CN CN201010000852A patent/CN101721909A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989263A (en) * | 2012-10-11 | 2013-03-27 | 田原宇 | Efficient radial flow adsorption tower |
| CN107840400A (en) * | 2017-12-14 | 2018-03-27 | 夏兴洪 | A kind of evaporator and its processing method for handling high salt high ammonia-nitrogen wastewater |
| CN115999316A (en) * | 2021-10-21 | 2023-04-25 | 中国石油化工股份有限公司 | Absorption stabilization process and absorption desorption coupling tower thereof |
| CN115999316B (en) * | 2021-10-21 | 2024-07-02 | 中国石油化工股份有限公司 | Absorption stabilization process and absorption desorption coupling tower thereof |
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Application publication date: 20100609 |