CN105484837A - Diesel engine exhaust treatment device based on gas-liquid membrane contactor - Google Patents
Diesel engine exhaust treatment device based on gas-liquid membrane contactor Download PDFInfo
- Publication number
- CN105484837A CN105484837A CN201610023060.4A CN201610023060A CN105484837A CN 105484837 A CN105484837 A CN 105484837A CN 201610023060 A CN201610023060 A CN 201610023060A CN 105484837 A CN105484837 A CN 105484837A
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- China
- Prior art keywords
- liquid
- gas
- membrane contactor
- diesel engine
- treatment device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with particulate filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0857—Carbon oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a diesel engine exhaust treatment device based on a gas-liquid membrane contactor. The diesel engine exhaust treatment device comprises a microparticle trap, the gas-liquid membrane contactor, a hydraulic pump, a liquid storage tank and a waste liquid tank. The gas-liquid membrane contactor comprises a shell, an absorption liquid inlet, an absorption liquid outlet, an exhaust inlet, an exhaust outlet and hollow fiber membranes. The hollow fiber membranes are evenly distributed in the shell of the gas-liquid membrane contactor and penetrate the whole gas-liquid membrane contactor. The microparticle trap is connected with the exhaust inlet of the gas-liquid membrane contactor. The liquid storage tank is connected with the absorption liquid inlet. The waste liquid tank is connected with the absorption liquid outlet. The hydraulic pump is connected between the liquid storage tank and the absorption liquid inlet. The diesel engine exhaust treatment device has the beneficial effects that nitrogen oxide can be directly absorbed into a solution to be recycled, the nitrogen oxide can be absorbed, carbon dioxide can be absorbed as well, waste liquid can be recycled through the waste liquid tank, and secondary pollution is avoided.
Description
Technical field
The present invention relates to the utilization of the energy and the protection of environment, be specially a kind of diesel engine exhaust gas treatment device based on gas-liquid membrane contactor.
Background technique
Environmental pollution is in recent years serious all the more, and energy-conserving and environment-protective have become the problem that the whole world is paid close attention to jointly.Diesel engine is in the major impetus as heavy machineries such as automobile, tractor, boats and ships, generators, a large amount of tail gas is produced in running, nitrogen oxide particularly in its exhaust emission is very big to environmental hazard, and the CO2 emission in its tail gas is considered to the pollution sources of environment too.Most diesel oil tail gas processing method only pays close attention to the reduction of discharging of nitrogen oxide, but ignores the reduction of discharging of carbon dioxide.
To methods such as the selective catalytic reduction of the post-processing approach of nitrogen oxide, absorption and sorptions in diesel engine vent gas.It is more that selective catalytic reduction reduces discharging application at diesel engine nitrogen oxide, but need catalyzer and low temperature environment, and system is comparatively complicated, and nitrogen discharged can not get in air of process recycled; Adsorption method is applied less on a diesel engine, and realization is more difficult, and adsorption efficiency is lower.
Summary of the invention
The object of the present invention is to provide and a kind ofly utilize gas-liquid convection between tail gas and absorption liquid by nox adsorption in solution, improve the absorption efficiency of the materials such as carbon dioxide.
For achieving the above object, the diesel engine exhaust gas treatment device based on gas-liquid membrane contactor of the present invention, comprises particle trapper, gas-liquid membrane contactor, oil hydraulic pump, liquid container and used liquid container; Described gas-liquid membrane contactor comprises housing, absorption liquid is imported and exported, tail gas is imported and exported and hollow-fibre membrane, and described some hollow-fibre membranes are evenly distributed in the enclosure interior of gas-liquid membrane contactor, run through whole gas-liquid membrane contactor; Described particle trapper is connected with the inlet exhaust gas of gas-liquid membrane contactor, and described liquid container is connected with absorption liquid import, and used liquid container is connected with absorption liquid outlet, and described oil hydraulic pump is connected between liquid container and absorption liquid import.
In order to control the flow velocity of absorption liquid, improve absorption efficiency, this device also comprises single-chip microcomputer, pressure gauge and NOx sensor, described NOx sensor is arranged on the offgas outlet of gas-liquid membrane contactor, described pressure gauge is arranged between oil hydraulic pump and absorption liquid import, and NOx sensor and pressure gauge are all connected with single-chip microcomputer signal input part, described single-chip microcomputer signal output part connecting fluid press pump.
Further, this hollow-fibre membrane is porous hollow fiber film, and material is inorganic hollow fibers ceramic membrane or polymeric membrane.
Further, if this hollow-fibre membrane is polymeric membrane, an intercooler before described gas-liquid membrane contactor, is also provided with.
Described absorption liquid is the akaline liquids such as sodium hydroxide, sodium carbonate, ammoniacal liquor.
The present invention makes waste gas and absorption liquid produce gas-liquid two-phase convection current, nitrogen oxide directly can be absorbed in solution, be conducive to recycling, and can select not only can absorbing NOx but also can the absorption liquid of absorbing carbon dioxide absorb, not only can reach remove nitrogen oxide effect also can efficient absorption carbon dioxide, and waste liquid can be recycled by used liquid container, avoids secondary pollution.
Accompanying drawing explanation
Fig. 1 is the overall structure sketch of this device..
Fig. 2 is gas-liquid membrane contactor structural drawing.
Fig. 3 is gas-liquid membrane contactor sectional view.
Fig. 4 is gas-liquid membrane contactor schematic diagram.
In figure: 1 is diesel engine, 2 is particle trappers, and 3 is gas-liquid membrane contactors, 4 is liquid containers, and 5 is used liquid containers, and 6 is oil hydraulic pumps, 7 is pressure gauges, and 8 is single-chip microcomputers, and 9 is NOx sensor, 10 is outlet pipes, and 11 is gas-liquid membrane contactor housings, and 12 is hollow-fibre membranes, 13 is tube sides, and 14 is shell sides, and 15 is inlet exhaust gas, 16 is offgas outlet, and 17 is absorption liquid imports, and 18 is absorption liquid outlets.
Embodiment
As Fig. 1, a kind of diesel engine exhaust gas treatment device based on gas-liquid membrane contactor of the present invention is primarily of particle trapper 2, gas-liquid membrane contactor 3, liquid container 4, used liquid container 5 and control system composition, gas-liquid membrane contactor 3 is as shown in Figure 2 primarily of housing 11, hollow-fibre membrane 12, tail gas is imported and exported and absorption liquid imports and exports composition, hollow-fibre membrane 12 is distributed on the enclosure interior of gas-liquid membrane contactor 3, one end of particle trapper 2 connects relief opening, the other end of particle trapper 2 is connected to the inlet exhaust gas 15 of gas-liquid membrane contactor 3, the offgas outlet 16 of gas-liquid membrane contactor 3 is connected with outlet pipe 10, liquid container 4 is connected to absorption liquid import 17 place of gas-liquid membrane contactor 3, used liquid container 5 exports 16 with the absorption liquid of gas-liquid membrane contactor 3 and is connected.
This device is also provided with the control system regulated absorption liquid muscle power, control system is primarily of oil hydraulic pump 6, single-chip microcomputer 8, pressure gauge 7 and NOx sensor 9 form, oil hydraulic pump 6 and pressure gauge 7 are arranged between the absorption liquid import 17 of liquid container 4 and membrane contactor 3, outlet pipe 10 arranges a NOx sensor 9, and the signal output part of single-chip microcomputer 8 is connected with oil hydraulic pump 6, and signal input part is connected with NOx sensor 9 and pressure gauge 7.
During this device process diesel engine vent gas, first the tail gas of diesel emission is filtered by particle trapper 2, particulate matter in removing tail gas, then tail gas is passed into the tube side (namely inside hollow-fibre membrane 12) in gas-liquid membrane contactor 3, meanwhile, oil hydraulic pump 6 between the absorption liquid import 17 being arranged on liquid container 4 and gas-liquid membrane contactor 3 is by nox adsorption liquid injected gas liquid membrane contactor 3 shell side (in the housing 11 namely outside hollow-fibre membrane 12) in liquid container 4, now pass into tail gas at the tube side of gas-liquid membrane contactor 3, shell side passes into absorption liquid, tail gas is got rid of by tube side, absorption liquid is by the nox adsorption in tail gas, membrane contactor will will be flowed into again and the absorption liquid participating in absorbing nitrogen oxide in tail gas and carbon dioxide pumps into used liquid container by absorption liquid outlet 18, waste gas and absorption liquid is made to produce gas-liquid two-phase convection current, improve absorption efficiency.
Oil hydraulic pump 6 has speed-regulating function, the pressure gauge 7 be arranged between oil hydraulic pump 6 and gas-liquid membrane contactor 3 outputs signal and is passed to single-chip microcomputer 8, and single-chip microcomputer 8 can regulate the absorption liquid muscle power in gas-liquid membrane contactor 3 according to the rotating speed of the size hydraulic control pump 6 of pressure gauge 7.Be arranged on gas-liquid membrane contactor 3 final vacuum pipe 10 to be provided with NOx sensor 11 the nitrogen oxide in tail gas cont signal after process is passed to single-chip microcomputer 8, single-chip microcomputer 8 can change the flow velocity of absorption liquid according to the rotating speed of the Signal Regulation oil hydraulic pump 6 of NOx sensor 11 simultaneously; When pressure gauge 7 shows that in membrane contactor, pressure is excessive, NOx sensor 11 no longer works.
Absorption liquid in this device can be the akaline liquids such as sodium hydroxide, sodium carbonate, ammoniacal liquor; it can absorb nitrogen oxide, hydrogen sulfide and most of carbon dioxide in tail gas; be conducive to environmental protection, and waste liquid is recycled by used liquid container, avoid secondary pollution.
Above-mentioned hollow-fibre membrane is porous hollow fiber film, and its material of preparing can be inorganic hollow fiber ceramic membrane or polymeric membrane.If material is hollow fiber ceramic membrane, its operating temperature and exhaust temperature approximately, without the need in advance cooled exhaust gas; If material is polymeric membrane, as ps hollow fiber uf membrane, Polyimide Hollow Fiber, Pvdf Microporous Hollow Fiber Membrane and polypropylene hollow fiber membrane etc., but also need before membrane contactor to arrange an intercooler, the temperature first reducing tail gas passes into membrane contactor again.
Claims (5)
1. based on a diesel engine exhaust gas treatment device for gas-liquid membrane contactor, it is characterized in that: comprise particle trapper (2), gas-liquid membrane contactor (3), oil hydraulic pump (6), liquid container (4) and used liquid container (5); Described gas-liquid membrane contactor (3) comprises housing (11), absorption liquid is imported and exported, tail gas is imported and exported and hollow-fibre membrane (12), the housing (11) that described some hollow-fibre membranes (12) are evenly distributed in gas-liquid membrane contactor is inner, runs through whole gas-liquid membrane contactor (3); Described particle trapper (2) is connected with the inlet exhaust gas (15) of gas-liquid membrane contactor (3), described liquid container (4) is connected with absorption liquid import (17), used liquid container (5) is connected with absorption liquid outlet (18), and described oil hydraulic pump (6) is connected between liquid container (4) and absorption liquid import (17).
2. the diesel engine exhaust gas treatment device based on gas-liquid membrane contactor according to claim 1, it is characterized in that: described device also comprises single-chip microcomputer (8), pressure gauge (7) and NOx sensor (9), described NOx sensor (9) is arranged on offgas outlet (16) position of gas-liquid membrane contactor (3), described pressure gauge (7) is arranged between oil hydraulic pump (6) and absorption liquid import (17), NOx sensor (9) is all connected with single-chip microcomputer (8) signal input part with pressure gauge (7), described single-chip microcomputer (8) signal output part connecting fluid press pump (6).
3. the diesel engine exhaust gas treatment device based on gas-liquid membrane contactor according to claim 1, is characterized in that: described hollow-fibre membrane (12) is porous hollow fiber film, and material is inorganic hollow fibers ceramic membrane or polymeric membrane.
4. the diesel engine exhaust gas treatment device based on gas-liquid membrane contactor according to claim 3, is characterized in that: described hollow-fibre membrane (12) is polymeric membrane, is also provided with an intercooler before described gas-liquid membrane contactor.
5. the diesel engine exhaust gas treatment device based on gas-liquid membrane contactor according to claim 1, is characterized in that: described absorption liquid is the akaline liquids such as sodium hydroxide, sodium carbonate, ammoniacal liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610023060.4A CN105484837A (en) | 2016-01-14 | 2016-01-14 | Diesel engine exhaust treatment device based on gas-liquid membrane contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610023060.4A CN105484837A (en) | 2016-01-14 | 2016-01-14 | Diesel engine exhaust treatment device based on gas-liquid membrane contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105484837A true CN105484837A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610023060.4A Pending CN105484837A (en) | 2016-01-14 | 2016-01-14 | Diesel engine exhaust treatment device based on gas-liquid membrane contactor |
Country Status (1)
| Country | Link |
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| CN (1) | CN105484837A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499473A (en) * | 2016-09-23 | 2017-03-15 | 合肥信达膜科技有限公司 | A kind of vehicle exhaust film purifying device |
| CN109292498A (en) * | 2018-09-28 | 2019-02-01 | 南安市罗兴工业设计有限公司 | A kind of film roughening film roll all-in-one machine with filter carbon processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100319322A1 (en) * | 2008-03-12 | 2010-12-23 | Huethwohl Georg | Metering system for injecting a urea solution into the exhaust gas flow of an internal combustion engine |
| CN103644020A (en) * | 2013-12-24 | 2014-03-19 | 北京科领动力科技有限公司 | Urea water solution spraying rate control method of diesel SCR system |
| CN204152598U (en) * | 2014-10-22 | 2015-02-11 | 天津生态城环保有限公司 | A kind of automobile purifying apparatus |
| CN205591987U (en) * | 2016-01-14 | 2016-09-21 | 南京工业职业技术学院 | Diesel engine tail gas processing apparatus based on gas -liquid membrane contactor |
-
2016
- 2016-01-14 CN CN201610023060.4A patent/CN105484837A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100319322A1 (en) * | 2008-03-12 | 2010-12-23 | Huethwohl Georg | Metering system for injecting a urea solution into the exhaust gas flow of an internal combustion engine |
| CN103644020A (en) * | 2013-12-24 | 2014-03-19 | 北京科领动力科技有限公司 | Urea water solution spraying rate control method of diesel SCR system |
| CN204152598U (en) * | 2014-10-22 | 2015-02-11 | 天津生态城环保有限公司 | A kind of automobile purifying apparatus |
| CN205591987U (en) * | 2016-01-14 | 2016-09-21 | 南京工业职业技术学院 | Diesel engine tail gas processing apparatus based on gas -liquid membrane contactor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499473A (en) * | 2016-09-23 | 2017-03-15 | 合肥信达膜科技有限公司 | A kind of vehicle exhaust film purifying device |
| CN106499473B (en) * | 2016-09-23 | 2018-09-18 | 合肥信达膜科技有限公司 | A kind of vehicle exhaust film purifying device |
| CN109292498A (en) * | 2018-09-28 | 2019-02-01 | 南安市罗兴工业设计有限公司 | A kind of film roughening film roll all-in-one machine with filter carbon processing |
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Application publication date: 20160413 |
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| WD01 | Invention patent application deemed withdrawn after publication |