CN109236507A - A kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism and control method - Google Patents
A kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism and control method Download PDFInfo
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- CN109236507A CN109236507A CN201811333259.2A CN201811333259A CN109236507A CN 109236507 A CN109236507 A CN 109236507A CN 201811333259 A CN201811333259 A CN 201811333259A CN 109236507 A CN109236507 A CN 109236507A
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- hydrogen
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 992
- 238000002407 reforming Methods 0.000 title claims abstract description 51
- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 13
- 239000007789 gas Substances 0.000 claims abstract description 121
- 239000001257 hydrogen Substances 0.000 claims abstract description 91
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 91
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 230000008676 import Effects 0.000 claims abstract description 75
- 239000008246 gaseous mixture Substances 0.000 claims abstract description 54
- 238000001704 evaporation Methods 0.000 claims abstract description 47
- 230000008020 evaporation Effects 0.000 claims abstract description 46
- 230000002000 scavenging effect Effects 0.000 claims abstract description 42
- 239000002737 fuel gas Substances 0.000 claims abstract description 28
- 238000005204 segregation Methods 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 88
- 238000006243 chemical reaction Methods 0.000 claims description 46
- 239000000203 mixture Substances 0.000 claims description 39
- 239000002912 waste gas Substances 0.000 claims description 22
- 238000002955 isolation Methods 0.000 claims description 16
- 238000000926 separation method Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 12
- 239000000567 combustion gas Substances 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000008602 contraction Effects 0.000 claims description 7
- 238000005336 cracking Methods 0.000 claims description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000008450 motivation Effects 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- -1 alkene film Chemical compound 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/10—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone
- F02M25/12—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone the apparatus having means for generating such gases
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
- C01B3/382—Multi-step processes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
- C01B3/384—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts the catalyst being continuously externally heated
-
- 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
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- 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
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Fuel Cell (AREA)
Abstract
Using the online reforming system of the vehicle-mounted methanol of silk screen separating mechanism, engine is equipped with air inlet pipe and exhaust pipe, reformer includes reformer, evaporator section and silk screen segregation section, hydrogen-rich mixes air valve and passes through the outlet of piping connection reform fuel gas and hydrogen-rich gaseous mixture injector, high-temperature tail gas valve passes through the import of piping connection evaporator section and exhaust pipe, methanol flow valve passes through the import of piping connection methanol evaporation tube and methanol tank, the outlet of scavenging exhaust gas valve is connected by pipeline and scavenging with inlet exhaust gas, the import of scavenging exhaust gas valve is connected to exhaust pipe, ECU mixes air valve with hydrogen-rich respectively, scavenging exhaust gas valve, high-temperature tail gas valve, tonifying Qi exhaust valve, methanol flow valve and the electrical connection of methanol injection flow control valve, the present invention realizes the heat using engine high-temperature tail gas, realize that vehicle-mounted methanol is reformed online and is cracked into methanol fuel Hydrogen-rich fuel gas supplies vehicular engine, improves the burning of engine and the purpose of emission performance.
Description
Technical field
The invention belongs to residual heat of tail gas of automobile to utilize technical field, and in particular to a kind of using the vehicle-mounted of silk screen separating mechanism
The online reforming system of methanol and control method.
Background technique
Compared with the conventional fossil fuels such as gasoline, diesel oil, natural gas, combustion of hydrogen cleaning, no particle, a hydrocarbon, oxidation
The discharge such as carbon；According to Lean Burning Technique, combustion of hydrogen can further realize zero-emission.Therefore, hydrogen, which has, replaces tradition
Fossil fuel, as the great potential of vehicular engine main fuel.
However, hydrogen is gaseous state at normal temperatures and pressures, transport and storage are not easy, when use need to take the method for pressurization by its
The compression hydrogen of boil down to high pressure high density is simultaneously stored in high-pressure bottle；Meanwhile molecular weight is small, explosion limit is wide, burning
Speed is fast, is easy to happen tempering when being used as vehicular engine fuel.These properties cause using hydrogen fuel risk very
Height, the job security and reliability of engine not can guarantee.
Studies have shown that can make methanol that cracking reaction occur using online reforming technique, the fuel gas for being rich in hydrogen is generated,
It can be effectively improved the igniting and combustibility of engine, and reduce discharge；Moreover, methanol is liquid under normal temperature and pressure conditions,
It stores and transports and is very convenient.Therefore, online reforming technique can be used on automobile, supply methanol recapitalization for hydrogen-rich gaseous mixture
Engine is as vehicle fuel, so that methanol and its fuel reforming have the great potential applied in power train in vehicle application field.
Fig. 1 provide it is a kind of using residual heat of tail gas of automobile carry out preparing hydrogen by reforming methanol device (application number:
201310668754.X).As shown, working space is isolated into evaporating space and cracking space two parts.Since work is empty
Between it is big, therefore not can guarantee methanol and come into full contact with catalyst, methanol and exhaust gas, therefore its working efficiency and speed are more low
Under.Moreover, program size is larger as seen from Figure 1, is limited, made by space and weight used in the fields such as vehicle-mounted, airborne
With inconvenience.
Summary of the invention
To realize that vehicle-mounted methanol is reformed online and methanol fuel is cracked into hydrogen-rich using the heat of engine high-temperature tail gas
Fuel gas supplies vehicular engine, improves the burning and emission performance of engine, and the present invention provides a kind of using silk screen separation
The online reforming system of the vehicle-mounted methanol of mechanism and control method, technical solution are as follows:
A kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism, including ECU (Electronic Control
Unit, electronic control unit), methanol tank, engine, reformer, hydrogen-rich mix air valve, scavenging exhaust gas valve, high-temperature tail gas
Valve, tonifying Qi exhaust valve, methanol flow valve, methanol injection flow control valve, methanol injector and hydrogen-rich gaseous mixture injector, institute
Engine is stated equipped with air inlet pipe and exhaust pipe, the reformer includes reformer, evaporator section and silk screen segregation section, reformer
For realizing liquid methanol evaporation, it is online reform and carbinol mixture gas-liquid separation, reformer be provided with evaporator section import,
The import of methanol evaporation tube, scavenging inlet exhaust gas, reform fuel gas outlet, gaseous methanol outlet, liquid methanol outlet and combustion gas are mended
Tracheae, high-temperature tail gas valve pass through the import of piping connection evaporator section and exhaust pipe, hydrogen-rich mixing for controlling high-temperature tail gas flow
Air valve passes through the outlet of piping connection reform fuel gas and hydrogen-rich gaseous mixture injector, hydrogen-rich for controlling hydrogen-rich mixed gas flow
Gaseous mixture injector is fixed in air inlet pipe, and the hydrogen-rich gaseous mixture for generating after reforming is ejected into engine air inlet tube, first
Alcohol flow valve is used to control the flow of liquid methanol, and by the import of piping connection methanol evaporation tube and methanol tank, scavenging is used useless
Air valve is specially check valve, and the hydrogen-rich gaseous mixture discharge for will retain in reformer, the outlet of scavenging exhaust gas valve passes through pipe
Road and scavenging are connected with inlet exhaust gas, any on pipeline between the import and evaporator section import and exhaust pipe of scavenging exhaust gas valve
It is a little connected to, methanol injector is installed on the engine, is used for engine cylinder injection methanol fuel, methanol injection flow control
Valve processed is used to control the flow of methanol injector injection methanol, is connect by pipeline with methanol tank and methanol injector, liquid
Methanol outlet is connected to by pipeline with methanol tank, and methanol tank is for storing methanol, and tonifying Qi exhaust valve is for controlling tonifying Qi height
The flow of warm combustion gas, by piping connection combustion gas blowdown pipe and exhaust pipe, gaseous methanol outlet passes through pipeline and reform fuel gas
Outlet, the ECU mix air valve, scavenging exhaust gas valve, high-temperature tail gas valve, tonifying Qi exhaust valve, methanol with hydrogen-rich respectively
Flow valve and the electrical connection of methanol injection flow control valve, for controlling the opening and closing and aperture of each valve.
The reformer includes exhaust gas inlet, waste gas outlet, reforms body, methanol reaction channel and reformate channel,
Reforming body includes reformer shell and exhaust steam passage, and reformer casing is set on the outside of exhaust steam passage, the both ends of exhaust steam passage
It is fixedly connected respectively with waste gas outlet and exhaust gas inlet, methanol reaction channel is the tubular structure that section is arch, and spiral twines
It is around in the outer surface of exhaust steam passage, the vault of methanol reaction channel is made of selective permeable material, methanol reaction channel
Inner wall is provided with catalyst coat, and the vault of methanol reaction channel is fixedly connected with the inner wall of reformer shell, and methanol reaction is logical
The arch bottom in road is fixedly connected with the outer surface of exhaust steam passage, reformer outer casing inner wall, exhaust steam passage outer wall and methanol reaction channel
The reformate channel of sealing is formed between outer wall, one end of methanol reaction channel is communicated with reforming methanol import, methanol reaction
The other end in channel is communicated with reforming methanol outlet, and the one end in reformate channel is communicated with scavenging inlet exhaust gas, reforms and produces
The other end in object channel is communicated with reform fuel gas outlet.
The reformer further includes the first thermocouple, and first thermocouple is fixed on exhaust gas inlet expansion segment, and the
The thermo wires of one thermocouple extends to inside exhaust steam passage, and the first thermocouple is electrically connected with ECU.
The exhaust gas inlet includes exhaust gas inlet flange and exhaust gas inlet expansion segment, and exhaust gas inlet expansion segment is side slot
The cylinder of other side wide opening, slot side are fixedly connected with exhaust gas inlet flange, wide opening side and the fixed company of exhaust steam passage
It connects, the combustion gas blowdown pipe is mounted on exhaust gas inlet expansion segment；
The waste gas outlet includes waste gas outlet flange and waste gas outlet contraction section, and waste gas outlet contraction section is side slot
The cylinder of other side wide opening, slot side are fixedly connected with waste gas outlet flange, wide opening side and the fixed company of exhaust steam passage
It connects.
The evaporator section includes evaporator section outlet, evaporator section import, methanol evaporation tube and evaporator section tube body, evaporator section tube body
Both ends respectively with evaporator section outlet and evaporator section import be fixedly connected, evaporator section export be connected to the exhaust gas inlet, methanol
Evaporation tube is the tubular structure that section is arch, is helically wound around the outer surface of evaporator section tube body, the arch bottom of methanol evaporation tube
It is fixedly connected with the outer surface of evaporator section tube body, the both ends of methanol evaporation tube have been respectively communicated with the import of methanol evaporation tube and methanol steams
Send out pipe outlet, the outlet of methanol evaporation tube and reforming methanol inlet communication.
The evaporator section outlet includes evaporator section outlet(discharge) flange and evaporator section exports converging transition, and evaporator section outlet converging transition is
The cylinder of side slot side wide opening, slot side are fixedly connected with evaporator section outlet(discharge) flange, wide opening side and evaporator section
Tube body is fixedly connected；
The evaporator section import includes evaporator section suction flange and evaporator section import divergent segment, and evaporator section import divergent segment is
The cylinder of side slot side wide opening, slot side are fixedly connected with evaporator section suction flange, wide opening side and evaporator section
Tube body is fixedly connected；
The evaporator section further includes the second thermocouple, and second thermocouple is fixed on evaporator section import divergent segment, and
The thermo wires of second thermocouple extends to evaporator section tubular body, and the second thermocouple is electrically connected with ECU.
The silk screen segregation section includes condensation net, separation piece housing, liquid collecting cavity and isolation board, the isolation board level assembly
In on the inner wall of separation piece housing, the liquid collecting cavity is formed between segregation section inner walls below isolation board, is set on isolation board
Several liquid collecting holes are equipped with, are vertically arranged with several condensation nets, segregation section above isolation board between segregation section inner walls
The two sides of shell are respectively arranged with carbinol mixture import and gaseous state methanol outlet, and the bottom for separating piece housing is provided with liquid first
Alcohol outlet, liquid methanol outlet are connected to the liquid collecting cavity, and carbinol mixture import passes through the reforming methanol of flange and reformer
Outlet.
A kind of vehicle-mounted methanol using silk screen separating mechanism reforms control method online, a kind of uses silk screen using above-mentioned
The online reforming system of the vehicle-mounted methanol of separating mechanism, comprising the following steps:
When step 1, engine work, ECU controls methanol injection flow control valve and opens, and methanol tank is methanol injection
Device supplies liquid methanol, operating condition where driving engine operation, ECU to judge engine according to its internal sensor signal, when
When needing using hydrogen-rich gaseous mixture auxiliary combustion, ECU controls high-temperature tail gas valve and opens for judgement, and engine high-temperature tail gas is from engine
Exhaust duct enters in the evaporator section of reformer through evaporator section import, and reformer is preheated；
Step 2, ECU read the temperature signal of the first thermocouple and the second thermocouple in reformer, when in reformer
When temperature reaches job requirement, ECU control under methanol flow valve open, liquid methanol through methanol tank flow into methanol evaporation tube into
Mouthful, methanol is evaporated in evaporator section inner part, and methanol gas-liquid mixture is entered in reformer by reforming methanol import to be cracked
Reaction, uncracked carbinol mixture flow in silk screen segregation section through reforming methanol outlet, are separated, condensed liquid first
Alcohol returns to methanol tank；
The hydrogen-rich gaseous mixture that step 3, methanol decomposition generate is exported from reform fuel gas to flow out, and flows into through hydrogen-rich mixing air valve rich
Hydrogen-rich gaseous mixture is ejected into engine air inlet tube by hydrogen-rich gaseous mixture injector by hydrogen gaseous mixture injector, meanwhile, in step 2
The gaseous methanol isolated in silk screen segregation section is incorporated in hydrogen-rich gaseous mixture, and the aperture of hydrogen-rich mixing air valve is controlled by ECU；
Step 4, when reformer stops working, ECU control scavenging opened with exhaust gas valve, a small amount of high-temperature tail gas is through scavenging
Enter reformer with inlet exhaust gas, remaining hydrogen-rich gaseous mixture is taken out of through reform fuel gas outlet, and be input to hydrogen-rich gaseous mixture
Injector, it is ensured that the work safety of reformer.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention is by setting reformer for realizing the evaporation, online reformation and carbinol mixture gas of liquid methanol
Liquid separation passes through the outlet of piping connection reform fuel gas and hydrogen-rich gaseous mixture injector, high-temperature tail gas valve using hydrogen-rich mixing air valve
By the import of piping connection evaporator section and exhaust pipe, methanol flow valve passes through the import of piping connection methanol evaporation tube and methanol tank,
The outlet of scavenging exhaust gas valve is connected by pipeline and scavenging with inlet exhaust gas, and the import of scavenging exhaust gas valve and exhaust pipe connect
It is logical, ECU mixed respectively with hydrogen-rich air valve, scavenging exhaust gas valve, high-temperature tail gas valve, tonifying Qi exhaust valve, methanol flow valve and
Methanol injection flow control valve electrical connection, for controlling the opening and closing and aperture of each valve；It realizes and utilizes engine high-temperature tail gas
Heat, realize vehicle-mounted methanol reforms online and by methanol fuel be cracked into hydrogen-rich fuel gas supply vehicular engine, improvement
The burning of engine and the purpose of emission performance.
2, the present invention is kept off by setting segregation section, the interior setting of segregation section by the cooling silk screen of the cooling silk screen baffle in top and lower part
The S-shaped refrigerated separation channel that plate is formed can fast implement the gas-liquid separation of the carbinol mixture of reformer discharge, the liquid isolated
State methanol eddy to methanol tank is stored, and the working efficiency of reformer is improved.
3, cooling point of S-shaped can further be increased by the cooling silk screen baffle of the cooling silk screen baffle in the top of bending and lower part
Passage length from channel improves the separative efficiency of carbinol mixture.
4, the present invention is helically wound around the outer surface of exhaust steam passage by the methanol reaction channel that section is arch, can make first
The exhaust steam passage of liquid methanol and high temperature in alcohol reaction channel comes into full contact with, and realizes the rapid evaporation of liquid methanol, accelerates
The reaction speed of methanol decomposition, improves work efficiency.
5, the vault of methanol reaction channel of the present invention is made of selective penetrated property material, and methanol reaction channel spiral twines
It is around in the outer surface of exhaust steam passage, the gas-liquid mixture of liquid methanol and its hydrogen-rich gaseous mixture composition being cracked to form is anti-in methanol
It answers and generates centrifugal force when flowing in channel, so that hydrogen-rich gaseous mixture be made rapidly to separate from gas-liquid mixture, it is anti-to pass through methanol
It answers the vault in channel to reach in reformate channel, the separative efficiency of hydrogen-rich gaseous mixture is improved, to improve working efficiency.
6, convection current occurs with the liquid methanol in methanol reaction channel under the influence of centrifugal force after hydrogen-rich gaseous mixture generates,
The mixing uniformity of gas-liquid mixture is improved, so that the contact area of liquid methanol and catalyst increases, while making liquid
Heat exchanger effectiveness between methanol and the exhaust steam passage of high temperature improves, and accelerates the reaction speed of methanol decomposition, to generate more
More hydrogen-rich gaseous mixtures improves working efficiency.
Detailed description of the invention
Fig. 1 is the scenario-frame schematic diagram of the prior art；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the flow chart of control method of the invention；
Fig. 4 is the structural schematic diagram of reformer of the present invention；
Fig. 5 is the schematic diagram of the section structure of methanol reaction channel of the present invention；
Wherein: waste gas outlet flange 1；Exhaust gas inlet flange 2；Reform body 3；Scavenging inlet exhaust gas 31；Reform fuel gas
Outlet 32；Reformer shell 33；Exhaust steam passage 34；Methanol reaction channel 4；Reforming methanol import 41；Reforming methanol outlet 42；Arch
Top 43；Catalyst coat 44；Encircle bottom 45；Combustion gas blowdown pipe 5；Reformate channel 6；First thermocouple 7；Waste gas outlet contraction section
8；Exhaust gas inlet expansion segment 9；Evaporator section 10；Evaporator section outlet(discharge) flange 101；Evaporator section suction flange 102；Evaporator section outlet is tapered
Section 103；Evaporator section import divergent segment 104；Evaporator section tube body 105；Methanol evaporation tube import 1051；The outlet of methanol evaporation tube
1052；Methanol pipe interface flange 106；Methanol evaporation tube 107；Second thermocouple 108；Silk screen segregation section 11；Condense net 111；
Separate piece housing 112；Liquid collecting cavity 113；Isolation board 114；Liquid collecting hole 115；Carbinol mixture import 116；Gaseous methanol outlet
117；Liquid methanol outlet 12；ECU 13；Methanol tank 14；Engine 15；Reformer 16；Hydrogen-rich mixes air valve 17；Scavenging is used
Exhaust gas valve 18；High-temperature tail gas valve 19；Tonifying Qi exhaust valve 20；Methanol flow valve 21；Methanol injection flow control valve 22；Methanol spray
Emitter 23；Hydrogen-rich gaseous mixture injector 24；Air inlet pipe 25；Exhaust pipe 26；Reformer 27.
Specific embodiment
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
As shown in Figures 2 to 5, it is reformed online the present invention provides a kind of vehicle-mounted methanol using silk screen separating mechanism and is
System, including ECU 13, methanol tank 14, engine 15, reformer 16, hydrogen-rich mix air valve 17, scavenging exhaust gas valve 18, high temperature
Exhaust valve 19, tonifying Qi exhaust valve 20, methanol flow valve 21, methanol injection flow control valve 22, methanol injector 23 and hydrogen-rich
Gaseous mixture injector 24, engine 15 are equipped with air inlet pipe 25 and exhaust pipe 26, and reformer 16 includes reformer 27, evaporator section 10
With silk screen segregation section 11, reformer 16 for realizing liquid methanol evaporation, it is online reform and carbinol mixture gas-liquid separation,
Reformer 16 is provided with evaporator section import, methanol evaporation tube import 1051, scavenging inlet exhaust gas 31, reform fuel gas outlet
32, gaseous methanol outlet 119, liquid methanol outlet 12 and combustion gas blowdown pipe 5, high-temperature tail gas valve 19 is for controlling high-temperature tail gas stream
Amount, by the import of piping connection evaporator section and exhaust pipe 26, hydrogen-rich mixing air valve 17 is used to control hydrogen-rich mixed gas flow,
Air inlet pipe is fixed on by piping connection reform fuel gas outlet 32 and hydrogen-rich gaseous mixture injector 24, hydrogen-rich gaseous mixture injector 24
On 25, the hydrogen-rich gaseous mixture for generating after reforming is ejected into the air inlet pipe 25 of engine 15, and methanol flow valve 21 is for controlling
The flow of liquid methanol processed, by piping connection methanol evaporation tube import 1051 and methanol tank 14, scavenging has with exhaust gas valve 18
Body is check valve, and the hydrogen-rich gaseous mixture discharge for will retain in reformer 27, the outlet of scavenging exhaust gas valve 18 passes through pipeline
It is connect with scavenging inlet exhaust gas 31, between the import and evaporator section import and exhaust pipe 26 of scavenging exhaust gas valve 18 on pipeline
Any point connection, specifically, pipeline connection of the scavenging between exhaust gas valve 18 and evaporator section import and high-temperature tail gas valve 19, first
Alcohol injector 23 is mounted on engine 15, is used for 15 cylinder injection methanol fuel of engine, methanol injection flow control valve
22 spray the flow of methanol for controlling methanol injector 23, are connect by pipeline with methanol tank 14 and methanol injector 23,
Liquid methanol outlet 12 is connected to by pipeline with methanol tank 14, for uncracked liquid methanol to be returned in methanol tank 14,
It continues with, methanol tank 14 is used to control the flow of tonifying Qi high-temperature fuel gas for storing methanol, tonifying Qi exhaust valve 20, leads to
Piping connection combustion gas blowdown pipe 5 and exhaust pipe 26 are crossed, when the first thermocouple 7 and the second thermocouple 108 judge reformer 16
When temperature is lower than operating temperature, then a small amount of high-temperature fuel gas can be passed through by combustion gas blowdown pipe 5 to improve in reformer 16
Temperature, gaseous methanol outlet 119 are connected to reform fuel gas outlet 32 by pipeline, reach and further divided using silk screen segregation section 11
The purpose of the gaseous methanol separated out, ECU 13 mixed respectively with hydrogen-rich air valve 17, scavenging exhaust gas valve 18, high-temperature tail gas valve 19,
Tonifying Qi exhaust valve 20, methanol flow valve 21 and methanol injection flow control valve 22 are electrically connected, for controlling opening for each valve
It closes and aperture.
Hydrogen-rich gaseous mixture injector 24 is specially gas injector, is the prior art with methanol injector 23, herein
Just it is no longer described in detail.
Reformer 27 includes exhaust gas inlet, waste gas outlet, reforms body 3, methanol reaction channel 4 and reformate channel 6,
Reforming body 3 includes reformer shell 33 and exhaust steam passage 34, and reformer shell 33 is sheathed on 34 outside of exhaust steam passage, reformer
It is fixed by methanol reaction channel 4 between shell 33 and exhaust steam passage 34, the both ends of exhaust steam passage 34 respectively with waste gas outlet and
Exhaust gas inlet is fixedly connected, and methanol reaction channel 4 is the tubular structure that section is arch, is helically wound around exhaust steam passage 34
The vault 43 of outer surface, methanol reaction channel 4 is made of selective permeable material, and selective permeable material uses polytetrafluoroethyl-ne
The material of separable the hydrogen-rich gaseous mixture and liquid methanol such as alkene film, the inner wall of methanol reaction channel 4 are provided with catalyst coat 44,
Catalyst using CuZnAl etc. can catalysis methanol cracking reaction catalyst, outside the vault 43 and reformer of methanol reaction channel 4
The inner wall of shell 33 is fixedly connected, and the arch bottom 45 of methanol reaction channel 4 is fixedly connected with the outer surface of exhaust steam passage 34, outside reformer
The reformate channel 6 of sealing is formed between 4 outer wall of 33 inner wall of shell, 34 outer wall of exhaust steam passage and methanol reaction channel, methanol is anti-
The one end in channel 4 is answered to be communicated with reforming methanol import 41, the other end of methanol reaction channel 4 is communicated with reforming methanol outlet 42,
The one end in reformate channel 6 is communicated with scavenging inlet exhaust gas 31, and the other end in reformate channel 6 is communicated with reform fuel gas
Outlet 32.
Reformer 27 further includes the first thermocouple 7, and the first thermocouple 7 is fixed on exhaust gas inlet expansion segment 9, and the first heat
The thermo wires of galvanic couple 7 extends to inside exhaust steam passage 34, and the first thermocouple 7 is electrically connected with ECU 13.
Exhaust gas inlet includes exhaust gas inlet flange 2 and exhaust gas inlet expansion segment 9, and exhaust gas inlet expansion segment 9 is side slot
The cylinder of other side wide opening, slot side are fixedly connected with exhaust gas inlet flange 2, and wide opening side and exhaust steam passage 34 are fixed
Connection, combustion gas blowdown pipe 5 are mounted on exhaust gas inlet expansion segment 9；
Waste gas outlet includes waste gas outlet flange 1 and waste gas outlet contraction section 8, and waste gas outlet contraction section 8 is side slot
The cylinder of other side wide opening, slot side are fixedly connected with waste gas outlet flange 1, and wide opening side and exhaust steam passage 34 are fixed
Connection.
Evaporator section 10 includes evaporator section outlet, evaporator section import, methanol evaporation tube 107 and evaporator section tube body 105, evaporator section
The both ends of tube body 105 are fixedly connected with evaporator section outlet and evaporator section import respectively, and evaporator section outlet is connected to exhaust gas inlet, first
Alcohol evaporation tube 107 is the tubular structure that section is arch, is helically wound around the outer surface of evaporator section tube body 105, methanol evaporation
The arch bottom of pipe 107 is fixedly connected with the outer surface of evaporator section tube body 105, and the both ends of methanol evaporation tube 107 have been respectively communicated with methanol
Evaporation tube import 1051 and methanol evaporation tube outlet 1052, methanol evaporation tube outlet 1052 are connected to reforming methanol import 41, first
Alcohol evaporation tube outlet 1052 is connected to by methanol pipe interface flange 106 with reforming methanol import 41.
Evaporator section outlet includes evaporator section outlet(discharge) flange 101 and evaporator section exports converging transition 103, and evaporator section exports converging transition
103 be the cylinder of side slot side wide opening, and slot side is fixedly connected with evaporator section outlet(discharge) flange 101, wide opening side
It is fixedly connected with evaporator section tube body 105；
Evaporator section import includes evaporator section suction flange 102 and evaporator section import divergent segment 104, evaporator section import divergent segment
104 be the cylinder of side slot side wide opening, and slot side is fixedly connected with evaporator section suction flange 102, wide opening side
It is fixedly connected with evaporator section tube body 105；
Evaporator section 10 further includes the second thermocouple 108, and the second thermocouple 108 is fixed on evaporator section import divergent segment 104,
And second the thermo wires of thermocouple 108 extend to inside evaporator section tube body 105, the second thermocouple 108 is electrically connected with ECU 13.
First thermocouple 7 and the second thermocouple 108 are respectively to monitor the temperature in exhaust steam passage 34 and evaporator section tube body 105
Degree.
Silk screen segregation section 11 includes condensation net 111, separation piece housing 112, liquid collecting cavity 113 and isolation board 114, isolation board
114 levels are assemblied on the inner wall of separation piece housing 112, and 114 lower section of isolation board collects with formation between 112 inner wall of piece housing is separated
Sap cavity 113 is provided with several liquid collecting holes 115 on isolation board 114, and the liquid methanol isolated in carbinol mixture passes through liquid collecting
Hole 115 is flow in liquid collecting cavity 113, and the top of isolation board 114 is vertically arranged with several condensations between 112 inner wall of piece housing with separating
Net 111 according to actual needs, suitably can increase or subtract specifically, in the present embodiment, condensation net 111 is provided with 7
The quantity of net 111 is condensed less, and the two sides of separation piece housing 112 are respectively arranged with carbinol mixture import 116 and gaseous methanol goes out
Mouth 117, the bottom of separation piece housing 112 are provided with liquid methanol outlet 12, and liquid methanol outlet 12 is connected to liquid collecting cavity 113,
Carbinol mixture import 116 is connected to by flange with the reforming methanol of reformer outlet 42.
Reformer reacts remaining methanol gas-liquid mixture and flows into carbinol mixture import 116 through reforming methanol outlet 42,
Into in silk screen segregation section 11, carbinol mixture condenses net 111 by multiple tracks, and part carbinol mixture is cold on condensation net 111
It coagulates for liquid methanol, liquid methanol is flow in liquid collecting cavity 113 since gravity flows downward through liquid collecting hole 115, most afterwards through liquid first
Alcohol outlet 12 is discharged, and is back to methanol tank 14 and is stored, and uncooled gaseous methanol is through 117 discharge of gaseous methanol outlet, directly
Output engine is connect to burn.
The working principle of reformer 16 of the invention is as follows:
Firstly, 15 high-temperature tail gas of engine enters inside evaporator section 10 via evaporator section suction flange 102；Through the second thermoelectricity
When even 108 temperature for measuring inside evaporator section 10 reach operating temperature, liquid methanol start by methanol evaporation tube import 1051 into
Enter methanol evaporation tube 107.
The heat of high-temperature tail gas in evaporator section tube body 105 passes to methanol evaporation tube via 105 side wall of evaporator section tube body
Liquid methanol in 107, liquid methanol part are evaporated to gaseous state；Methanol gas-liquid mixture enters through methanol evaporation tube outlet 1052
In methanol reaction channel 4 cracking reaction occurs for reforming methanol import 41, further improves the speed of methanol decomposition reaction,
Meanwhile there can be the gaseous methanol of sufficient amount to pass through by adjusting into the 15 high-temperature tail gas amount of engine inside evaporator section 10, guarantee
Methanol evaporation tube outlet 1052 enters reforming methanol import 41.
The heat of high-temperature tail gas in exhaust steam passage 34 passes in methanol reaction channel 4 via 34 side wall of exhaust steam passage
Methanol gas-liquid mixture, methanol gas-liquid mixture continue the downstream flow to methanol reaction channel 4, due to methanol reaction channel 4
Inner wall be coated with catalyst, cracking reaction occurs under the action of high temperature and catalyst for methanol, generates hydrogen-rich gaseous mixture；Meanwhile
Since the vault 43 of methanol reaction channel 4 is made of selective permeability material, hydrogen-rich gaseous mixture generated in centrifugal force and
Under the action of permeability material, enter in reformate channel 6 via the vault 43 of methanol reaction channel 4, and in centrifugal force
Under effect, liquid methanol is located on the outside of hydrogen-rich gaseous mixture, hydrogen-rich gaseous mixture and liquid methanol convection current under gravity, hydrogen-rich
Gaseous mixture moves upwards, while a part of liquid methanol downlink contacts high temperature surface, improves the evaporation efficiency of liquid methanol, from
And accelerate the reaction speed of methanol decomposition.
Hydrogen-rich gaseous mixture is flowed out via reformed fuel outlet, and being input to 15 fuel nozzle of engine, inlet valve, head etc. needs
Will the gas position；And unreacted liquid methanol flow to carbinol mixture import 118 via reforming methanol outlet 42, enters
In silk screen segregation section 11, for carbinol mixture by S-shaped refrigerated separation channel 117, part carbinol mixture is logical in S-shaped refrigerated separation
Liquid methanol is condensed on the conduit wall in road 117, liquid methanol flow to liquid collecting cavity since gravity flows downward, through liquid collecting hole 116
In 114, most it is back to methanol tank 14 through 12 discharge of liquid methanol outlet afterwards and is stored, uncooled gaseous methanol is through gaseous state
Methanol outlet 119 is discharged, and direct output engine 15 burns.
Finally, 15 tail gas of sub-fraction engine is flowed into via scavenging inlet exhaust gas 31 under the control of ECU 13, use
It is released with the hydrogen-rich burning mixture that will be remained in methanol reaction channel 4, guarantees security of system.During this period, thermoelectricity
The even temperature monitored in exhaust steam passage 34 at any time, and high-temperature tail gas flow is controlled accordingly.
A kind of vehicle-mounted methanol using silk screen separating mechanism reforms control method online, a kind of uses silk screen using above-mentioned
The online reforming system of the vehicle-mounted methanol of separating mechanism, comprising the following steps:
When step 1, engine 15 work normally, ECU 13 controls methanol injection flow control valve 22 and opens, methanol tank 14
Liquid methanol is supplied for methanol injector 23, driving engine 15 works, and ECU 13 judges according to its internal sensor signal
15 place operating condition of engine, when determining to need using hydrogen-rich gaseous mixture auxiliary combustion, ECU 13 controls high-temperature tail gas valve 19 and beats
It opens, 15 high-temperature tail gas of engine is from the evaporator section 10 that 15 exhaust duct of engine enters reformer 16 through evaporator section import, weight
Engagement positions 16 are preheated；
Step 2, ECU 13 read the temperature signal of the first thermocouple 7 and the second thermocouple 108 in reformer 16, when weight
When temperature reaches job requirement in engagement positions 16, methanol flow valve 21 is opened under the control of ECU 13, and liquid methanol is through methanol tank
14 flow into methanol evaporation tube import 1051, and methanol is evaporated in 10 inner part of evaporator section, and methanol gas-liquid mixture passes through reforming methanol
Import 41, which enters, occurs cracking reaction in reformer 27, uncracked carbinol mixture flow to silk screen point through reforming methanol outlet 42
It from section 11, is separated, condensed liquid methanol returns to methanol tank 14；
The hydrogen-rich gaseous mixture that step 3, methanol decomposition generate is flowed from 32 outflow of reform fuel gas outlet through hydrogen-rich mixing air valve 17
Enter hydrogen-rich gaseous mixture injector 24, hydrogen-rich gaseous mixture be ejected into 15 air inlet pipe 25 of engine by hydrogen-rich gaseous mixture injector 24,
Meanwhile the gaseous methanol isolated in silk screen segregation section 11 in step 2 is incorporated in hydrogen-rich gaseous mixture, hydrogen-rich mixing air valve 17 is opened
Degree is controlled by ECU 13；
Step 4, when reformer 16 stops working, ECU 13 control scavenging with exhaust gas valve 18 open, a small amount of high temperature tail
Gas enters reformer 27 through scavenging inlet exhaust gas 31, remaining hydrogen-rich gaseous mixture is taken out of through reform fuel gas outlet 32, and defeated
Enter to hydrogen-rich gaseous mixture injector 24, it is ensured that the work safety of reformer 16.
Claims (9)
1. a kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism, which is characterized in that including ECU, methanol tank, hair
Motivation, reformer, hydrogen-rich mix air valve, scavenging exhaust gas valve, high-temperature tail gas valve, tonifying Qi exhaust valve, methanol flow valve, first
Alcohol injection flow control valve, methanol injector and hydrogen-rich gaseous mixture injector, the engine are equipped with air inlet pipe and exhaust pipe, institute
Stating reformer includes reformer, evaporator section and silk screen segregation section, and reformer is for realizing the evaporation of liquid methanol, online weight
Whole and carbinol mixture gas-liquid separation, reformer be provided with evaporator section import, the import of methanol evaporation tube, scavenging tail gas into
Mouth, reform fuel gas outlet, gaseous methanol outlet, liquid methanol outlet and combustion gas blowdown pipe, high-temperature tail gas valve is for controlling high temperature
Exhaust flow, by the import of piping connection evaporator section and exhaust pipe, hydrogen-rich mixing air valve is used to control hydrogen-rich mixed gas flow,
It is fixed in air inlet pipe by the outlet of piping connection reform fuel gas and hydrogen-rich gaseous mixture injector, hydrogen-rich gaseous mixture injector,
Hydrogen-rich gaseous mixture for generating after reforming is ejected into engine air inlet tube, and methanol flow valve is used to control the stream of liquid methanol
Amount, by the import of piping connection methanol evaporation tube and methanol tank, scavenging is specially check valve with exhaust gas valve, is used for reformer
The hydrogen-rich gaseous mixture discharge inside retained, the outlet of scavenging exhaust gas valve are connected by pipeline and scavenging with inlet exhaust gas, and scavenging is used
Any point between the import of exhaust gas valve and evaporator section import and exhaust pipe on pipeline is connected to, and methanol injector, which is mounted on, to be started
On machine, for engine cylinder injection methanol fuel, methanol injection flow control valve to be for controlling methanol injector injection first
The flow of alcohol is connect by pipeline with methanol tank and methanol injector, and liquid methanol outlet is connected to by pipeline with methanol tank,
Methanol tank is used to control the flow of tonifying Qi high-temperature fuel gas for storing methanol, tonifying Qi exhaust valve, is fired by piping connection
Gas blowdown pipe and exhaust pipe, by pipeline and reform fuel gas outlet, the ECU is mixed with hydrogen-rich respectively for gaseous methanol outlet
Air valve, scavenging exhaust gas valve, high-temperature tail gas valve, tonifying Qi exhaust valve, methanol flow valve and methanol injection flow control valve electricity
Connection, for controlling the opening and closing and aperture of each valve.
2. a kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism as described in claim 1, which is characterized in that
The reformer includes exhaust gas inlet, waste gas outlet, reforms body, methanol reaction channel and reformate channel, reforms body
Including reformer shell and exhaust steam passage, reformer casing is set on the outside of exhaust steam passage, the both ends of exhaust steam passage respectively with it is useless
Gas outlet is fixedly connected with exhaust gas inlet, and methanol reaction channel is the tubular structure that section is arch, is helically wound around exhaust gas
The vault of the outer surface in channel, methanol reaction channel is made of selective permeable material, the inner wall setting of methanol reaction channel
There is catalyst coat, the vault of methanol reaction channel is fixedly connected with the inner wall of reformer shell, the arch bottom of methanol reaction channel
It is fixedly connected with the outer surface of exhaust steam passage, between reformer outer casing inner wall, exhaust steam passage outer wall and methanol reaction channel outer wall
Form the reformate channel of sealing, one end of methanol reaction channel is communicated with reforming methanol import, methanol reaction channel it is another
One end is communicated with reforming methanol outlet, and the one end in reformate channel is communicated with scavenging inlet exhaust gas, reformate channel
The other end is communicated with reform fuel gas outlet.
3. a kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism as claimed in claim 2, which is characterized in that
The reformer further includes the first thermocouple, and first thermocouple is fixed on exhaust gas inlet expansion segment, and the first thermocouple
Thermo wires extend to inside exhaust steam passage, the first thermocouple is electrically connected with ECU.
4. a kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism as claimed in claim 3, which is characterized in that
The exhaust gas inlet includes exhaust gas inlet flange and exhaust gas inlet expansion segment, and exhaust gas inlet expansion segment is that the slot other side in side is wide
The cylinder of mouth, slot side are fixedly connected with exhaust gas inlet flange, and wide opening side is fixedly connected with exhaust steam passage, the combustion
Gas blowdown pipe is mounted on exhaust gas inlet expansion segment；
The waste gas outlet includes waste gas outlet flange and waste gas outlet contraction section, and waste gas outlet contraction section is that side slot is another
The cylinder of side wide opening, slot side are fixedly connected with waste gas outlet flange, and wide opening side is fixedly connected with exhaust steam passage.
5. a kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism as claimed in claim 4, which is characterized in that
The evaporator section includes evaporator section outlet, evaporator section import, methanol evaporation tube and evaporator section tube body, the both ends point of evaporator section tube body
It is not fixedly connected with evaporator section outlet and evaporator section import, evaporator section outlet is connected to the exhaust gas inlet, and methanol evaporation tube is
Section is the tubular structure of arch, is helically wound around the outer surface of evaporator section tube body, the arch bottom of methanol evaporation tube and evaporator section
The outer surface of tube body is fixedly connected, and the both ends of methanol evaporation tube have been respectively communicated with the import of methanol evaporation tube and methanol evaporation tube goes out
Mouthful, the outlet of methanol evaporation tube and reforming methanol inlet communication.
6. a kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism as claimed in claim 5, which is characterized in that
The evaporator section outlet includes evaporator section outlet(discharge) flange and evaporator section exports converging transition, and it is side that evaporator section, which exports converging transition,
The cylinder of slot side wide opening, slot side are fixedly connected with evaporator section outlet(discharge) flange, wide opening side and evaporator section tube body
It is fixedly connected；
The evaporator section import includes evaporator section suction flange and evaporator section import divergent segment, and evaporator section import divergent segment is side
The cylinder of slot side wide opening, slot side are fixedly connected with evaporator section suction flange, wide opening side and evaporator section tube body
It is fixedly connected.
7. a kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism as claimed in claim 6, which is characterized in that
The evaporator section further includes the second thermocouple, and second thermocouple is fixed on evaporator section import divergent segment, and second
The thermo wires of thermocouple extends to evaporator section tubular body, and the second thermocouple is electrically connected with ECU.
8. a kind of online reforming system of vehicle-mounted methanol using silk screen separating mechanism as claimed in claim 7, which is characterized in that
The silk screen segregation section includes condensation net, separation piece housing, liquid collecting cavity and isolation board, and the isolation board level is assemblied in point
From on the inner wall of piece housing, the liquid collecting cavity is formed between segregation section inner walls below isolation board, is provided on isolation board
Several liquid collecting holes are vertically arranged with several condensation nets, separate piece housing between isolation board top and segregation section inner walls
Two sides be respectively arranged with carbinol mixture import and gaseous state methanol outlet, the bottom for separating piece housing is provided with liquid methanol and goes out
Mouthful, liquid methanol outlet is connected to the liquid collecting cavity, and carbinol mixture import is exported by the reforming methanol of flange and reformer
Connection.
9. a kind of vehicle-mounted methanol using silk screen separating mechanism reforms control method online, using as claimed in claim 8 one
Kind uses the online reforming system of vehicle-mounted methanol of silk screen separating mechanism, which comprises the following steps:
When step 1, engine work, ECU controls methanol injection flow control valve and opens, and methanol tank is the confession of methanol injector
Liquid methanol is answered, operating condition where driving engine operation, ECU to judge engine according to its internal sensor signal works as judgement
When needing using hydrogen-rich gaseous mixture auxiliary combustion, ECU controls high-temperature tail gas valve and opens, and engine high-temperature tail gas is from engine exhaust
Road enters in the evaporator section of reformer through evaporator section import, and reformer is preheated；
Step 2, ECU read the temperature signal of the first thermocouple and the second thermocouple in reformer, when temperature in reformer
When reaching job requirement, methanol flow valve is opened under ECU control, and liquid methanol flows into the import of methanol evaporation tube through methanol tank,
Methanol is evaporated in evaporator section inner part, and methanol gas-liquid mixture is entered in reformer by reforming methanol import occurs cracking instead
It answers, uncracked carbinol mixture is flow in silk screen segregation section through reforming methanol outlet, is separated, condensed liquid methanol
Return to methanol tank；
The hydrogen-rich gaseous mixture that step 3, methanol decomposition generate is exported from reform fuel gas to flow out, and it is mixed to flow into hydrogen-rich through hydrogen-rich mixing air valve
Gas blowout emitter is closed, hydrogen-rich gaseous mixture is ejected into engine air inlet tube by hydrogen-rich gaseous mixture injector, meanwhile, silk screen in step 2
The gaseous methanol isolated in segregation section is incorporated in hydrogen-rich gaseous mixture, and the aperture of hydrogen-rich mixing air valve is controlled by ECU；
Step 4, when reformer stops working, ECU control scavenging opened with exhaust gas valve, a small amount of high-temperature tail gas is through scavenging tail
Gas import enters reformer, remaining hydrogen-rich gaseous mixture is taken out of through reform fuel gas outlet, and be input to hydrogen-rich mixing gas jet
Device, it is ensured that the work safety of reformer.
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| CN110296025A (en) * | 2019-06-27 | 2019-10-01 | 大连民族大学 | A kind of control method of array reforming reactor |
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