CN108983832A - A kind of automatic and accurate prepares the apparatus and method of certain concentration high-pressure carbon dioxide - Google Patents
A kind of automatic and accurate prepares the apparatus and method of certain concentration high-pressure carbon dioxide Download PDFInfo
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- CN108983832A CN108983832A CN201710402508.8A CN201710402508A CN108983832A CN 108983832 A CN108983832 A CN 108983832A CN 201710402508 A CN201710402508 A CN 201710402508A CN 108983832 A CN108983832 A CN 108983832A
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- carbon dioxide
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/001—Control of flow ratio with discontinuous action
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D11/00—Control of flow ratio
- G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
- G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
- G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
- G05D11/133—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components with discontinuous action
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Cultivation Of Plants (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses the apparatus and method that a kind of automatic and accurate prepares certain concentration high-pressure carbon dioxide, which includes programmable controller (PLC), high-pressure gas container, gas concentration lwevel detector and pressure sensor etc..Principle is to be controlled to be filled with a certain amount of air into high-pressure gas container first from PLC, aeration quantity is monitored by gas pressure sensor and feeds back to PLC, then PLC control supplements a certain amount of carbon dioxide, opens gas concentration lwevel detector and carries out Concentration Testing, concentration signal is transmitted to PLC, when concentration is lower than setting value, PLC control supplements carbon dioxide again, then detects again, iterative cycles, until reaching setting concentration, gas, which is prepared, to be completed.Similarly, if you need to turn down gas concentration lwevel, air is gradually supplemented, concentration is during which repeatedly detected, finally reach certain concentration, realize the accuracy controlling to gas concentration lwevel.
Description
Technical field
The invention belongs to accurate agricultural, chemical industry and gas mixing technology fields, are related to a kind of accurate formulation certain concentration
The apparatus and method of high-pressure carbon dioxide.
Background technique
Since CO2 emission greatly improved in mankind's activity, global warming is caused, it has also become great environment is asked
Topic.Denitrification (NOx) and alkane (CxHy) outside, carbon dioxide (CO2) it is main greenhouse gases, the increase of concentration is led
It has caused global warming and thus bring iceberg is melted.In recent years the natural calamity to take place frequently and global warming are closely related,
Long term survival and the development of the mankind will be threatened if not being controlled.Currently used for reducing CO2 The approach of discharge specifically includes that
One, efficiency of energy utilization is improved, by improved technology, more effectively utilizes the energy, reduces the use of the energy, and then reduce greenhouse
The discharge of gas；Two, using clean alternative energy source, low-carbon and carbon-free energy technology are developed, such as solar energy, wind energy, nuclear energy, water
Electric energy, biological energy source etc.；Three, it carries out consolidating for carbon dioxide to deposit and convert, using various physics, chemistry and biological method to CO2
It is collected, is concentrated, stores, fixes and converts that [Yang Zhonghua, Chen Mingming, Zeng Rong wait using microalgae technology emission reduction titanium dioxide
Progress [J] modern chemical industry of carbon, 2008,28 (8): 15-19.].CO is carried out with physics, chemical method2Fixation
Need the energy, and CO2Biological fixation be real environmentally protective mode, this method is also main and most effective on the earth
Carbon sequestration mode, play a major role in carbon cycle.At present it is believed that realizing two by plant, photosynthetic bacteria and algae
The biological fixation of carbonoxide is the most safely, effectively carbon sequestration strategy [Masakazu M, the Masahiro I. The with economy
biological CO2 fixation and utilization project by rite( 2) -screening and
breeding of microalgae with high capability in fixing CO2[ J] . Energy
ConversManage, 1997, 38: 493-497】。
Microalgae have photosynthetic rate is high, breeding is fast, environmental suitability is strong, treatment effeciency is high, it is controllable and easily with it is other
The advantages that engineering technology integrates, and efficient, three-dimensional, highdensity culture technique can be established, the frond generated after carbon sequestration has very
Good utility value, therefore there are high industrialized developing potentiality, in combination with the value of microalgae itself, utilize modern biotechnology skill
Art is translated into the high values liquid fuel such as biodiesel, or production lipoid and protein, or protects as high added value is extracted
The raw material etc. of strong product.Chlorella (Chllorella Miao Xiaoling etc. high to lipid content using fluidized bed pyrolysis reactor
Protothecoides) and Microcystis aeruginosa (Microcystis) carries out fast pyrogenation, obtains 17.5% and 23.7% life respectively
[prepares biomass liquid fuel [C] 2003 Chinese solar energy using microalgae to object diesel yield more than Miao Xiaoling, Wu Qing
Learn the Shanghai Annual Conference collection of thesis: publishing house of Shanghai Communications University, 2003:547-551].Sawayama etc. is also turned out
Microalgae is in addition to that can fix CO2Outside, additionally it is possible to for producing biological oil [Sawayama S, Inoue S, Dote Y, et
al.CO2 fixation and oil production thorugh microalga[J].Energy Convers
Manage,1995,36:729-731].[Fan JH, Xu H, Luo YC, the et al. Impacts of CO such as Fan JH2
concentration on growth, lipid accumulation, and carbon-concentrating-
mechanism-related gene expression in oleaginous Chlorella[J]. Applied
Microbiology and Biotechnology, 2015,99 (5): 2451-62] to chlorella studies have shown that passing through benefit
The accumulation of biomass and grease can be improved in filling CO 2, but is passed directly into pure carbon dioxide and can inhibit chlorella growth even
Kill chlorella.It is mostly the dioxy that various concentration is prepared by control flow or flow velocity to the use of carbon dioxide in the prior art
Change carbon [Huang G, Li T, Chen F, et al. High concentration CO2 sequestration by
using microalgae in staged cultivation[J]. Environmental Progress &
Sustainable Energy, 2016,35 (6): 1862-1867.], it is not easy to accurate control influences to sentence experimental result
It is disconnected, it will also result in CO2Loss, excessively high CO2Concentration even can bring danger to operator.So accurately detecting and matching
The carbon dioxide of certain concentration processed is a particularly important key link.
Summary of the invention
The most important storage of carbon dioxide at present and means of transportation are all the steel using high pressure, high concentration (95% or more)
Bottle, but in the effective concentration of microalgae and plant incubation generally below 10%.Different algal species, plant are in different growth steps
The most suitable gas concentration lwevel of section is also different, and gas concentration lwevel has important influence to using effect, dense more than suitable
Degree, one to generate negative effects, and two waste will also result in, and excessively high concentration even can bring danger to operator.This hair
Bright purpose is to provide a kind of apparatus and method of automatic and accurate preparation certain concentration high-pressure carbon dioxide, by high concentration titanium dioxide
Carbon mixes with air, and precise translation is the carbon dioxide of certain concentration, is applied to scientific research and actual production process.
Realization that the present invention adopts the following technical solutions:
A kind of automatic and accurate prepares the device of certain concentration high-pressure carbon dioxide, and gas source is pressure-air and high-pressure carbon dioxide,
PLC receives the signal of gas pressure sensor, gas concentration lwevel detector, controls the folding of solenoid valve.Being set by PLC needs
The gas concentration lwevel wanted opens air and inputs solenoid valve, and air enters high-pressure gas container, and aeration quantity can reach required air
90% or so (according to mixed gas complete when target, pressure and aimed concn determine), close air input solenoid valve, open dioxy
Change carbon and input solenoid valve, the short time is filled with a certain amount of carbon dioxide, is then shut off carbon dioxide input solenoid valve, acquires dioxy
Change concentration of carbon signal and feed back to PLC, PLC compares the difference of setting value and actual value, if actual concentrations are lower than setting value, beats again
Carbon dioxide input solenoid valve is opened, is closed after inflation, acquires gas concentration lwevel signal again, repeatedly the above process, until high
Gas concentration lwevel reaches sets requirement in pressure gas container.If you need to lower CO2Concentration then supplements air.Such as use other kinds instead
The gas and detector of class then can be used for preparing the high pressure gas of other types of certain concentration automatically.
Compared with prior art, the present invention can realize the accuracy controlling of gas concentration lwevel, plant automation degree height,
Safe operation.
The interval of the carbon dioxide is supplemented, by PLC controller (10) control carbon dioxide the single aeration time with
The mixed gas time can suitably increase reduction single aeration time intermittent time if you need to precision height, low if you need to precision, can reduce interval
Time simultaneously improves the single aeration time, to be rapidly achieved setting concentration.
The Concentration Testing of the carbon dioxide inputs solenoid valve (3), gas concentration lwevel detector (9) by carbon dioxide
Collective effect realizes that gas concentration lwevel is detected in interval, and data feedback gives PLC controller (10).
The pressure of the gas source (air, high concentration carbon dioxide) is greater than an atmospheric pressure, guarantees that two kinds of gases are smooth
Into high-pressure gas container.
The PLC can be opened according to the concentration of setting carbon dioxide and the difference adjust automatically gas source solenoid valve of actual concentrations
The duration of conjunction.
The present invention also provides a kind of methods that automatic and accurate prepares certain concentration high-pressure carbon dioxide, which is characterized in that packet
It includes using such as described in any item devices of claim 1-8, receives pressure and gas concentration lwevel information in real time by PLC and control
The switch of gas source solenoid valve realizes the accuracy controlling to gas concentration lwevel.
The invention has the following beneficial effects: the high-pressure carbon dioxides that achievable automatic and accurate prepares certain concentration, are two
The research and production of carbonoxide application provide reliable guarantee.
Detailed description of the invention
Fig. 1 is apparatus of the present invention structure chart, in which: 1. high-pressure carbon dioxide gas sources；2. pressure-air gas source；3. dioxy
Change carbon and inputs solenoid valve；4. air inputs solenoid valve；5. safety valve；6. high-pressure gas container；7. gas pressure sensor；8. two
Carbonoxide concentration detector solenoid valve；9. gas concentration lwevel detector；10. PLC controller.
Specific embodiment
Below for illustrating the present invention, but it is not intended to limit the scope of the invention.Obviously, described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Under the premise of making creative work, without departing from the spirit and scope of the present invention, it can also make a variety of changes
And modification, therefore all equivalent technical solutions also belong to scope of the invention, scope of patent protection of the invention should be by right
It is required that limiting.
As shown in Figure 1, a kind of automatic and accurate prepares the device of certain concentration high-pressure carbon dioxide, gas source be pressure-air and
High-pressure carbon dioxide, PLC receive the signal of gas pressure sensor, gas concentration lwevel detector, control the opening and closing of solenoid valve.
The gas concentration lwevel needed by PLC setting opens air and inputs solenoid valve, and air enters high-pressure gas container, aeration quantity
It can reach 90% or so of required air, close air and input solenoid valve, open carbon dioxide and input solenoid valve, the short time is filled with
A certain amount of carbon dioxide closes carbon dioxide and inputs solenoid valve, and acquisition gas concentration lwevel signal feeds back to PLC, and PLC compares
The difference of setting value and actual value is again turned on carbon dioxide input solenoid valve, closes after inflation if actual concentrations are lower than setting value
It closes, acquires gas concentration lwevel signal again, the above process repeatedly, until gas concentration lwevel reaches and sets in high-pressure gas container
Provisioning request.If you need to lower CO2Concentration then supplements air.The gas and detector for such as using other types instead then can be used for automatic
Prepare the high pressure gas of other types of certain concentration.
Embodiment 1:
The device for present embodiments providing a kind of automatic and accurate preparation certain concentration high-pressure carbon dioxide, wherein the index of each element
Parameter are as follows: programmable controller is that PLCS7-200 type adds 6V6648-0311 type touch screen；The detection of gas concentration lwevel detector
Range is 0-10%, and working relative humidity 0-95%RH, operating pressure is 1 ± 0.2 atmospheric pressure, measures flow velocity 300ml-500mL/
min；Note bubbler size is 7*5*2cm；High-pressure gas container is the 40L aluminium alloy air accumulator that a bearing capacity is 1.0MPa, band
1.0MPa pressure gauge；Pressure reducing valve is air type pressure regulator valve, maximum working pressure 1.0MPa, range of regulation 0.05-0.85
MPa；Solenoid valve is air-operated solenoid valve, maximum pressure-bearing 1.0MPa, operating voltage DC24V, closed type.
Embodiment 2:
The device described using embodiment 1, the method for present embodiments providing the high-pressure carbon dioxide of a preparation certain concentration.
It is 6% that mixed gas aimed concn, which is arranged, by PLC control, and input air 0.4MPa, single supplements CO2Time be 2 seconds, setting
Intermittent time be 60 seconds, CO2The stabilization time of detector is 30 seconds.After activation system, by gas in 40 seconds display pressure-bearing tanks
Pressure reaches 0.4 MPa；Air inputs solenoid valve and closes, and carbon dioxide inputs solenoid valve and opens supplement CO2, stop being passed through after 2 seconds
CO2, mix gas and start to detect after 60 seconds, display density is stablized 0.78% after 30 seconds.CO is supplemented again2, second circulation after show
It is 1.44%；CO is supplemented again2, third circulation after be shown as 2.11%；CO is supplemented again2, the 4th circulation after be shown as
2.70%；CO is supplemented again2, the 5th circulation after be shown as 3.37%；CO is supplemented again2, the 6th circulation after be shown as 4.01%；
CO is supplemented again2, the 7th circulation after be shown as 4.72%；CO is supplemented again2, the 8th circulation after be shown as 5.41%；It mends again
Fill CO2, the 9th circulation after be shown as 6.11%, reach setting concentration, gas mixed nub beam realizes target.
Claims (9)
1. the device that a kind of automatic and accurate prepares certain concentration high-pressure carbon dioxide, it is characterised in that the present apparatus is by PLC technology
Device (PLC) (10)；Gas concentration lwevel detector (9)；Gas concentration lwevel detector solenoid valve (8)；Gas pressure sensor
(7)；High-pressure gas container (6)；Safety valve (5)；Air inputs solenoid valve (4)；Carbon dioxide inputs solenoid valve (3)；High pressure is empty
Gas gas source (2)；The composition such as high concentration high-pressure carbon dioxide gas source (1) and connecting line.
2. a kind of automatic and accurate according to claim 1 prepares the device of certain concentration high-pressure carbon dioxide, feature
It is by PLC(10) receive the signals of gas pressure sensor (7).
3. a kind of automatic and accurate according to claim 1 prepares the device of certain concentration high-pressure carbon dioxide, feature
It is PLC(10) control supplement carbon dioxide and detection gas concentration lwevel alternately.
4. a kind of automatic and accurate according to claim 1 prepares the device of certain concentration high-pressure carbon dioxide, feature
It is PLC(10) it can be with the opening and closing of each solenoid valve of independent control.
5. a kind of automatic and accurate according to claim 1 prepares the device of certain concentration high-pressure carbon dioxide, feature
It is that the pressure of gas source (air, high concentration carbon dioxide) is greater than an atmospheric pressure.
6. a kind of automatic and accurate according to claim 1 prepares the device of certain concentration high-pressure carbon dioxide, feature
The time is opened and closed for carbon dioxide solenoid valve single can be adjusted by PLC.
7. a kind of automatic and accurate according to claim 1 prepares the device of certain concentration high-pressure carbon dioxide, feature
For it is gases used be carbon dioxide, detector is also gas concentration lwevel detector, if the gas source for using other types instead is gentle
Detector can be used for the other gases for preparing certain concentration.
8. a kind of automatic and accurate according to claim 1 prepares the device of certain concentration high-pressure carbon dioxide, similarly,
If necessary to turn down gas concentration lwevel, air can be gradually supplemented, concentration is during which repeatedly detected, finally reaches specific two
Aoxidize concentration of carbon.
9. a kind of method that automatic and accurate prepares certain concentration high-pressure carbon dioxide, which is characterized in that including using right such as to want
The described in any item devices of 1-8 are sought, receive pressure and gas concentration lwevel information in real time by PLC and control opening for gas source solenoid valve
It closes, realizes the accuracy controlling to gas concentration lwevel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710402508.8A CN108983832A (en) | 2017-06-01 | 2017-06-01 | A kind of automatic and accurate prepares the apparatus and method of certain concentration high-pressure carbon dioxide |
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| CN201710402508.8A CN108983832A (en) | 2017-06-01 | 2017-06-01 | A kind of automatic and accurate prepares the apparatus and method of certain concentration high-pressure carbon dioxide |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639377A (en) * | 2019-09-24 | 2020-01-03 | 西安鸿钧睿泽新材料科技有限公司 | Device and method for preparing carbon dioxide gas containing air and having different concentrations |
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| CN110639377A (en) * | 2019-09-24 | 2020-01-03 | 西安鸿钧睿泽新材料科技有限公司 | Device and method for preparing carbon dioxide gas containing air and having different concentrations |
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