CN111852615A - Small-sized diesel engine carbon particle removing device in extremely cold environment and working method thereof - Google Patents
Small-sized diesel engine carbon particle removing device in extremely cold environment and working method thereof Download PDFInfo
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- CN111852615A CN111852615A CN202010703657.XA CN202010703657A CN111852615A CN 111852615 A CN111852615 A CN 111852615A CN 202010703657 A CN202010703657 A CN 202010703657A CN 111852615 A CN111852615 A CN 111852615A
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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
- F01N3/01—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust by means of electric or electrostatic separators
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
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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
- F01N9/00—Electrical control of exhaust gas treating apparatus
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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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/14—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel burner
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention discloses a small-sized diesel engine carbon particle removal device in an extremely cold environment, which comprises a charge box, wherein an air inlet surface of the charge box is communicated with a large head end of a gradually expanding pipe, a small head end of the gradually expanding pipe is communicated with a flue gas pipeline, a first air valve is arranged on the flue gas pipeline, an air outlet surface of the charge box is communicated with a square surface of a hemispherical square part, a circular surface of the hemispherical square part is communicated with an air inlet end of a deposition pipe, an air outlet end of the deposition pipe is communicated with a gravity settling chamber, a flue gas outlet pipeline is arranged on the gravity settling chamber, an electrode is arranged in the charge box, and the electrode is connected with the positive electrode of a high-voltage pulse power supply through a lead. The invention also provides a working method of the carbon particle removing device for the diesel engine in the small extremely cold environment. The small-sized diesel engine carbon particle removing device under the extremely cold environment and the working method thereof provided by the invention remove tiny particles in the tail gas of the diesel engine generator by utilizing the double effects of the electrostatic force and the thermophoretic force, can adapt to the conditions of extremely cold regions, and have higher reliability.
Description
Technical Field
The invention relates to a small-sized diesel engine carbon particle removing device in an extremely cold environment and a working method thereof, belonging to the technical field of carbon black particle purification and removal.
Background
In some cold scientific research stations, work stations and monitoring stations, the diesel generator is one of the main energy sources for its operation. With the gradual improvement of the international society in the aspect of controlling the emission of pollutants of diesel generators, the control and treatment of the emission of particulate matters discharged by the diesel generators as an important emission source of air pollution are increasingly emphasized. At present, the traditional diesel particulate matter post-treatment technologies comprise means such as filtration trapping, catalytic conversion, electrostatic trapping and inertia trapping, and the technologies are not widely accepted and applied by people due to reasons such as unsatisfactory efficiency, high operation cost and complex equipment. More importantly, in these extremely cold regions, the workstations may be left unattended throughout the year, thus placing higher demands on the operational reliability of the diesel generator particulate trap. In the prior art, a device for removing carbon particles from a diesel engine is needed to meet the above requirements.
Disclosure of Invention
The invention aims to provide a small-sized diesel engine carbon particle removing device and a working method under an extremely cold environment, which can adapt to the conditions of extremely cold regions and have higher device reliability.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the small-sized diesel engine carbon particle removing device in the extremely cold environment comprises a charge box, wherein an air inlet surface of the charge box is communicated with a large head end of an expanding pipe, a small head end of the expanding pipe is communicated with a flue gas pipeline, a first air valve is arranged on the flue gas pipeline, an air outlet surface of the charge box is communicated with a square surface of a hemispherical square part, a circular surface of the hemispherical square part is communicated with an air inlet end of a deposition pipe, an air outlet end of the deposition pipe is communicated with a gravity settling chamber, a flue gas outlet pipeline is arranged on the gravity settling chamber, an electrode is arranged in the charge box, the electrode is connected with a positive electrode of a high-voltage pulse power supply arranged outside the charge box through a lead, and a negative electrode of the high-voltage pulse power supply is connected with the outer wall of the deposition pipe through the lead.
The side surface of the hemispherical dome part is communicated with an air outlet end of an air pipeline, the air inlet end of the air pipeline is connected with an air pump, a second air valve is arranged on the air pipeline, a flame ejector facing the deposition pipe is arranged in the hemispherical dome part, and the flame ejector is communicated with a fuel tank arranged outside the hemispherical dome part through a fuel pipeline.
The second air valve and the first air valve are respectively connected with an actuator, and the high-voltage pulse power supply and the two actuators are respectively connected with the control box through signal lines.
And heat insulation layers are arranged outside the flue gas pipeline, the gradually expanding pipe, the charge box and the hemispherical dome part.
The first air valve is a high-temperature fire-proof valve.
The pulse peak voltage of the voltage pulse power supply is continuously adjustable at 0-100kV, the pulse frequency is continuously adjustable at 10-200Hz, and the pulse width is 300-.
The electrode is made of stainless steel and is in a sawtooth shape.
A working method of a small-sized diesel engine carbon particle removing device in an extremely cold environment comprises the following steps:
flue gas discharged by a diesel engine enters a flue gas pipeline, a first air valve is opened and a second air valve is closed through a control box, a high-voltage pulse power supply is simultaneously opened, power supply parameters are in a set value, an air pump and a fuel tank are in a closed state, the flue gas enters a charge box, particles are charged under the action of an electrostatic field, high-temperature flue gas carries the charged particles to carry out a deposition pipe, the high-temperature flue gas is trapped by the inner wall surface of the deposition pipe under the action of thermophoretic force and electrostatic force, carbon black particles in the flue gas are removed, and then the flue gas enters a gravity settling chamber again, so that the particles;
When the running time of the high-voltage pulse power supply reaches a set value, the control box controls the first air valve and the high-voltage pulse power supply to be closed and the second air valve to be opened; and simultaneously, the fuel tank and the air pump are started, and the fuel enters the flame injection device to burn the carbon deposit on the tube wall in the deposition tube.
And after the working time of the flame injection device reaches a set value, closing the fuel tank, the air pump and the second air valve, and opening the first air valve and the high-voltage pulse power supply, wherein at the moment, the particle deposition device restarts the particle removal work.
The invention has the beneficial effects that: the invention provides a small-sized diesel engine carbon particle removing device in an extremely cold environment and a working method thereof, which realize the deposition and removal of tiny particles in the tail gas of a diesel engine generator in the device by utilizing the double functions of thermophoresis effect and electrostatic effect caused by outdoor low-temperature condition; the fuel is conveyed to the flame injection device through the fuel tank, the flame injection device combusts particles deposited in the deposition tube, and the combusted particles are taken away under the action of air from the air pump, so that the cleaning and regeneration of the deposition tube are realized, the long-time operation of the whole device can be realized, and the device does not need to be disassembled and overhauled; the second air valve and the first air valve are respectively connected with the actuators, the high-voltage pulse power supply and the two actuators are respectively connected with the control box through signal lines, after the running time of the high-voltage pulse power supply reaches a set value, the control box controls the first air valve and the high-voltage pulse power supply to be closed, the second air valve is opened, the fuel tank and the air pump are simultaneously opened, the control box can realize automatic timing cleaning of the deposition tube, the deposition tube cleaning device is suitable for unattended extremely cold regions, and the practicability is high.
Drawings
FIG. 1 is a schematic structural diagram of a small-sized diesel engine carbon particle removal device in an extremely cold environment.
The reference numbers in the figures are as follows: 1-flue gas pipeline; 2-an actuator; 3-a charge box; 4-round sky and square earth; 5-a deposition tube; 6-gravity settling chamber; 7-flue gas outlet duct; 8-a fuel tank; 9-air pump; 10-an air duct; 11-a second air valve; 12-a first air valve; 13-high voltage pulse power supply; 14-a wire; 15-an electrode; 16-a fuel conduit; 17-a flame ejector; 18-an expanding tube; 19-a control box; 20-signal line.
Detailed Description
The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.
The thermophoresis effect refers to a process that when tiny particles move in a fluid with a temperature gradient, due to different momentum transferred when molecules in a cold and hot area collide with the tiny particles, the tiny particles are driven to move in a direction opposite to the temperature gradient and are deposited on a low-temperature surface under the action of a force opposite to the direction of the temperature gradient. The tail gas discharged by the diesel generator has higher temperature, the outdoor room temperature in a severe cold or extremely cold area is lower, and great temperature difference exists between the tail gas and the room temperature, so that the thermophoresis effect can be utilized to purify particles in the tail gas of the diesel generator. The efficiency of the removal of fine particulate matter solely by the thermophoretic effect may not necessarily meet emission standards. Therefore, the electrostatic force and the thermophoresis force are adopted to play a double role, and the method is an ideal choice for removing the particulate matters in the tail gas of the diesel engine to the maximum extent. Based on the principle, the small-sized diesel engine carbon particle removing device in the extremely cold environment and the working method thereof are designed.
As shown in figure 1, the invention discloses a small-sized diesel engine carbon particle removal device in an extremely cold environment, which comprises a charge box 3, wherein an air inlet surface of the charge box 3 is communicated with a large end of an expanding pipe 18, a small end of the expanding pipe 18 is communicated with a flue gas pipeline 1, the flue gas pipeline 1 is provided with a first air valve 12, an air outlet surface of the charge box 3 is communicated with a square surface of a hemispherical square part 4, a circular surface of the hemispherical part 4 is communicated with an air inlet end of a deposition pipe 5, an air outlet end of the deposition pipe 5 is communicated with a gravity settling chamber 6, the gravity settling chamber 6 is provided with a flue gas outlet pipeline 7, an electrode 15 is arranged in the charge box 3, the electrode 15 is connected with an anode of a high-voltage pulse power supply 13 arranged outside the charge box 3 through a lead 14, and a cathode of the high-voltage pulse power supply 13 is connected with the outer wall of the deposition pipe 5 through the lead 14.
The side surface of the skyline part 4 is communicated with an air outlet end of an air pipeline 10, the air inlet end of the air pipeline 10 is connected with an air pump 9, and the air pump 9 can adapt to the working environment of extremely cold minus 40 ℃. The air duct 10 is provided with a second air valve 11, the dome section 4 is provided with a flame injector 17 facing the deposition tube 5, and the flame injector 17 is communicated with a fuel tank 8 provided outside the dome section 4 through a fuel duct 16.
The second air valve 11 and the first air valve 12 are respectively connected with an actuator 2, and the high-voltage pulse power supply 13 and the two actuators 2 are respectively connected with a control box 19 through signal lines 20.
The smoke pipeline 1, the gradually expanding pipe 18, the charge box 3 and the hemispherical dome part 4 are all externally provided with heat-insulating layers, and the heat-insulating materials are high-temperature-resistant materials. The first damper 12 is a high temperature fire damper. The flue gas duct 1 should be made of a high temperature resistant and corrosion resistant material. The deposition tube 5 does not need to be insulated, and materials with good heat conduction and electric conductivity and high temperature resistance are preferably selected. The materials of the charge box 3 and the hemispherical dome 4 should be high temperature resistant conductive materials.
The pulse peak voltage of the voltage pulse power supply 13 should be continuously adjustable at 0-100kV, the pulse frequency at 10-200Hz, and the pulse width at 300-. The working parameters of the high-voltage pulse power supply 13 can be adjusted according to the particle concentration of the treated flue gas and the flow rate of the flue gas.
The electrode 15 is made of stainless steel and has a saw-toothed shape.
The invention also discloses a working method of the small-sized diesel engine carbon particle removing device in the extremely cold environment, which comprises the following steps:
flue gas discharged by the diesel engine enters a flue gas pipeline 1, a first air valve 12 is opened and a second air valve 11 is closed through a control box 19, a high-voltage pulse power supply 13 is simultaneously opened, power supply parameters are in a set value, an air pump 9 and a fuel tank 8 are in a closed state, the flue gas enters a charge box 3, particles are charged under the action of an electrostatic field, high-temperature flue gas carries charged particles to a deposition pipe 5, the charged particles are trapped by the inner wall surface of the deposition pipe 5 under the action of thermophoretic force and electrostatic force, carbon and black particles in the flue gas are removed, and then the flue gas enters a gravity settling chamber 7 again, so that particles carried by the flue gas are settled again;
When the running time reaches a set value, the control box 19 controls to close the first air valve 12 and the high-voltage pulse power supply 13 and open the second air valve 11; simultaneously, the fuel tank 8 and the air pump 9 are started, and the fuel enters the flame injection device 17 to burn the carbon deposit on the inner pipe wall of the deposition pipe 5.
After the working time of the flame injection device 17 reaches the set value, the fuel tank 8, the air pump 9 and the second air valve 11 are closed, the first air valve 12 and the high-voltage pulse power supply 13 are opened, and at the moment, the particle deposition device restarts the particle removal operation.
In actual use, two sets of the device can be arranged for meeting the requirement of uninterrupted work of a diesel engine, and one set is used for standby.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides a small-size diesel engine carbon particle desorption device under extremely cold environment which characterized in that: comprises a charge box (3), the air inlet surface of the charge box (3) is communicated with the large head end of a divergent pipe (18), the small end of the gradually expanding pipe (18) is communicated with the flue gas pipeline (1), a first air valve (12) is arranged on the flue gas pipeline (1), the air outlet surface of the charge box (3) is communicated with the square surface of the hemispherical square part (4), the circular surface of the hemispherical dome part (4) is communicated with the air inlet end of the deposition tube (5), the air outlet end of the deposition pipe (5) is communicated with a gravity settling chamber (6), a flue gas outlet pipeline (7) is arranged on the gravity settling chamber (6), an electrode (15) is arranged in the charge box (3), the electrode (15) is connected with the positive electrode of a high-voltage pulse power supply (13) arranged outside the charge box (3) through a lead (14), the negative electrode of the high-voltage pulse power supply (13) is connected with the outer wall of the deposition tube (5) through the lead (14).
2. The device for removing carbon particles from a small-sized diesel engine in an extremely cold environment as claimed in claim 1, wherein: the side of the sky-circle-shaped part (4) is communicated with an air outlet end of an air pipeline (10), the air inlet end of the air pipeline (10) is connected with an air pump (9), a second air valve (11) is arranged on the air pipeline (10), a flame ejector (17) facing the deposition pipe (5) is arranged in the sky-circle-shaped part (4), and the flame ejector (17) is communicated with a fuel tank (8) arranged outside the sky-circle-shaped part (4) through a fuel pipeline (16).
3. The apparatus for removing carbon particles from a small-sized diesel engine in an extremely cold environment as claimed in claim 21, wherein: the second air valve (11) and the first air valve (12) are respectively connected with an actuator (2), and the high-voltage pulse power supply (13) and the two actuators (2) are respectively connected with a control box (19) through signal lines (20).
4. The device for removing carbon particles from a small-sized diesel engine in an extremely cold environment as claimed in claim 1, wherein: and heat-insulating layers are arranged outside the flue gas pipeline (1), the gradually expanding pipe (18), the charging box (3) and the hemispherical square part (4).
5. The device for removing carbon particles from a small-sized diesel engine in an extremely cold environment as claimed in claim 1, wherein: the first air valve (12) is a high-temperature fire-proof valve.
6. The device for removing carbon particles from a small-sized diesel engine in an extremely cold environment as claimed in claim 1, wherein: the pulse peak voltage of the voltage pulse power supply (13) is continuously adjustable from 0kV to 100kV, the pulse frequency is continuously adjustable from 10 Hz to 200Hz, and the pulse width is 300-400 ns.
7. The device for removing carbon particles from a small-sized diesel engine in an extremely cold environment as claimed in claim 1, wherein: the electrode (15) is made of stainless steel and is in a sawtooth shape.
8. A working method of a small-sized diesel engine carbon particle removing device in an extremely cold environment is characterized by comprising the following steps: the method comprises the following steps:
flue gas discharged by a diesel engine enters a flue gas pipeline (1), a first air valve (12) is opened and a second air valve (11) is closed through a control box (19), a high-voltage pulse power supply (13) is simultaneously opened, power supply parameters are set, an air pump (9) and a fuel tank (8) are in a closed state, the flue gas enters a charge box (3) to charge particles under the action of an electrostatic field, high-temperature flue gas carries the charged particles to a deposition tube (5), the charged particles are trapped by the inner wall surface of the deposition tube (5) under the action of thermophoretic force and electrostatic force to remove carbon black particles in the flue gas, and then the flue gas enters a gravity settling chamber (7) again to re-deposit the particles carried by the flue gas;
When the running time reaches a set value, the control box (19) controls to close the first air valve (12) and the high-voltage pulse power supply (13) and open the second air valve (11); simultaneously, a fuel tank (8) and an air pump (9) are started, fuel enters a flame injection device (17), and carbon deposits on the inner pipe wall of the deposition pipe (5) are combusted.
After the working time of the flame injection device (17) reaches a set value, the fuel tank (8), the air pump (9) and the second air valve (11) are closed, the first air valve (12) and the high-voltage pulse power supply (13) are opened, and at the moment, the particle deposition device restarts particle removal operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010703657.XA CN111852615A (en) | 2020-07-21 | 2020-07-21 | Small-sized diesel engine carbon particle removing device in extremely cold environment and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010703657.XA CN111852615A (en) | 2020-07-21 | 2020-07-21 | Small-sized diesel engine carbon particle removing device in extremely cold environment and working method thereof |
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| CN111852615A true CN111852615A (en) | 2020-10-30 |
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| CN202010703657.XA Pending CN111852615A (en) | 2020-07-21 | 2020-07-21 | Small-sized diesel engine carbon particle removing device in extremely cold environment and working method thereof |
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| CN110496704A (en) * | 2019-08-06 | 2019-11-26 | 西安交通大学 | A kind of fine particle agglomeration device of bipolar atomization pre electrified |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929371A (en) * | 2009-06-19 | 2010-12-29 | Tems有限公司 | Burner for diesel particulate filter regeneration |
| JP2012193701A (en) * | 2011-03-17 | 2012-10-11 | Toyota Motor Corp | Particulate-matter processing device |
| CN203108410U (en) * | 2013-02-26 | 2013-08-07 | 中维环保科技有限公司 | Processing device and processing system for nonuniform field intensity plasma waste gas |
| US20140311122A1 (en) * | 2013-04-17 | 2014-10-23 | GM Global Technology Operations LLC | Flow controlled electrically assisted dpf regeneration |
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Application publication date: 20201030 |