CN109630245B - Light hydrocarbon/diesel fuel reforming system and reforming method - Google Patents
Light hydrocarbon/diesel fuel reforming system and reforming method Download PDFInfo
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- CN109630245B CN109630245B CN201811538943.4A CN201811538943A CN109630245B CN 109630245 B CN109630245 B CN 109630245B CN 201811538943 A CN201811538943 A CN 201811538943A CN 109630245 B CN109630245 B CN 109630245B
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- 239000002283 diesel fuel Substances 0.000 title claims abstract description 102
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 98
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 98
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 98
- 238000002407 reforming Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 109
- 239000000446 fuel Substances 0.000 claims abstract description 67
- 238000006057 reforming reaction Methods 0.000 claims abstract description 58
- 238000002485 combustion reaction Methods 0.000 claims abstract description 26
- 239000002918 waste heat Substances 0.000 claims abstract description 13
- 239000012159 carrier gas Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims description 23
- 238000010992 reflux Methods 0.000 claims description 16
- 239000000295 fuel oil Substances 0.000 claims description 10
- 239000003921 oil Substances 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 24
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 9
- 229910002091 carbon monoxide Inorganic materials 0.000 description 9
- 230000006872 improvement Effects 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000629 steam reforming Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000002453 autothermal reforming Methods 0.000 description 2
- 238000000752 ionisation method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
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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
- 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
-
- 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
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/032—Producing and adding steam
-
- 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
-
- 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
- F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
- F02M27/04—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by electric means, ionisation, polarisation or magnetism
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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
- Y02T10/12—Improving ICE efficiencies
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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)
- Hydrogen, Water And Hydrids (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses a light hydrocarbon/diesel fuel reforming system and a reforming method, wherein the reforming system comprises a light hydrocarbon fuel supply device, a diesel fuel supply device, a reforming reaction device and a gas mixer, a carrier gas inlet pipe and a water vapor inlet pipe are arranged on the gas mixer, the light hydrocarbon fuel supply device is used for supplying atomized light hydrocarbon fuel, the diesel fuel supply device is used for supplying atomized diesel fuel, the atomized light hydrocarbon fuel and the diesel fuel enter the gas mixer through a pipeline to form mixed gas together with the carrier gas and the water vapor, the mixed gas enters the reforming reaction device for reforming reaction, and the reformed gas generated in the reforming reaction device is sent into a combustion chamber of an engine cylinder through a pipeline to participate in combustion. The reforming reaction device is arranged in a tail gas exhaust pipe of the cylinder. The invention utilizes the high-temperature waste heat of the tail gas of the engine as a heat source to directly heat the reforming reaction device, thereby saving energy, greatly improving the combustion efficiency of diesel oil and inhibiting cylinder knocking and nitrogen oxide emission after the diesel oil and light hydrocarbon are reformed.
Description
Technical Field
The invention belongs to the technical field of engines, relates to a raw material supply technology of an engine, and particularly relates to a light hydrocarbon/diesel fuel reforming system and a reforming method.
Background
Under the dual actions of energy crisis and environmental protection, the search for alternative energy and the reduction of pollutant emissions become the hot topic in the field of internal combustion engine research. Although the economy of a pure diesel engine is better than that of a gasoline engine, the waste of the pure diesel engine is serious in terms of the diesel engine, and the incomplete combustion of the diesel engine not only wastes energy, but also threatens the environment by discharging nitrogen oxides and sulfides. For natural gas engines, low temperature lean burn technology is often employed to suppress knock and nitrogen oxide (NOx) emissions. However, excessively high air-fuel ratios may result in engine misfire, increased unburned Hydrocarbon (HC) and carbon monoxide (CO) emissions. Bench tests and theoretical researches show that: the addition of hydrogen (H2) to natural gas can increase combustion speed, shorten flame quenching distance, improve engine misfire problem to realize stable lean combustion, and reduce HC, CO and NOx emission. The light hydrocarbon/diesel fuel reforming is a process of heating a reforming device by using the waste heat of high-temperature exhaust gas of a diesel engine, so that steam, gasified diesel and gasified light hydrocarbon fuel are subjected to reforming reaction under the catalysis of a catalyst under the high-temperature and low-pressure environments to generate hydrogen, methane and carbon monoxide. At present, the reforming method mainly adopts an ionization method, a high-temperature low-pressure reforming method, and provides energy for reaction by using high-voltage electric energy, or heats reformed gas by using high-temperature resistance wires. Not only are complicated and cumbersome associated devices required but additional energy is also provided to drive the reaction, but no related plants and techniques are available in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem of energy resource waste caused by overhigh exhaust temperature of the tail gas of the diesel engine. In particular to a light hydrocarbon/diesel reforming system and a reforming method which are designed by utilizing the high-temperature waste heat of the tail gas of an engine, so that the combustion efficiency is improved, and the knocking and the emission of nitrogen oxides (NOx) are inhibited.
The specific scheme adopted by the invention for solving the specific problems is as follows:
a light hydrocarbon/diesel fuel reforming system characterized by: including light hydrocarbon fuel feeding device, diesel oil feeding device, reforming reaction device and gas mixer, be equipped with carrier gas intake pipe and vapor intake pipe on the gas mixer, light hydrocarbon fuel feeding device is used for supplying with atomizing light hydrocarbon fuel, diesel oil feeding device is used for supplying with atomizing diesel oil, and atomizing light hydrocarbon fuel and diesel oil form the mist through pipeline entering gas mixer in with carrier gas, vapor together, and the mist carries out the reforming reaction in getting into reforming reaction device, the interior reforming gas that produces of reforming reaction device sends into the combustion chamber of engine cylinder through the pipeline and participates in the burning.
As an improvement, the reforming reaction device is arranged in an exhaust gas exhaust pipe of the cylinder, and the temperature required by the reforming reaction is kept through the waste heat of the exhaust gas of the diesel engine.
As an improvement, the light hydrocarbon fuel supply device comprises a light hydrocarbon fuel tank, a light hydrocarbon fuel pump, a light hydrocarbon flow control valve and a light hydrocarbon fuel atomizer which are sequentially connected through a light hydrocarbon fuel conveying pipe, wherein an outlet of the light hydrocarbon fuel atomizer is connected into the gas mixer through a pipeline.
As an improvement, the diesel oil supply device comprises a diesel oil tank, a diesel oil pump, a diesel oil flow control valve and a diesel oil atomizer which are sequentially connected through a diesel oil conveying pipe, wherein an outlet of the diesel oil atomizer is connected into the gas mixer through a pipeline.
As an improvement, the diesel oil supply device further comprises a high-pressure fuel oil supply system, the high-pressure fuel oil supply system comprises a diesel oil supercharging device and an oil injector, and diesel oil in the diesel oil tank is directly fed into a combustion chamber of the cylinder through the diesel oil supercharging device and the oil injector to participate in combustion.
As an improvement, the reforming reaction device comprises a reactor shell, a reforming reactor and a reforming catalyst, the reforming reactor is a cylinder with an opening at one end, the opening end of the cylinder is connected with an outlet of the gas mixer, the periphery of the cylinder is of a honeycomb-shaped air outlet structure, the reforming catalyst is coated on the outer surface of the cylinder of the reforming reactor, and the reactor shell is also a heat exchange tube wall.
As an improvement, the reforming catalyst is Pt/CeO2-Al2O3The reactor shell is provided with a heat exchange fin.
As an improvement, a backflow cylinder sleeved at the closed end of the reforming reactor is arranged in the reactor shell, and gaps for air flow to pass through are arranged between the backflow cylinder and the reforming reactor and between the backflow cylinder and the reactor shell.
The invention also provides a light hydrocarbon/diesel fuel reforming method, which is characterized by comprising the following steps:
step 3, the carrier gas and the vapor enter a gas mixer through a gas inlet pipe respectively;
and 5, the reforming reaction device is arranged in a tail gas exhaust pipe of the cylinder, and the reforming reaction temperature is maintained by heating through the waste heat of the tail gas of the diesel engine.
As a refinement, the carrier gas is an inert gas, and the reforming catalyst is Pt/CeO2-Al2O3A catalyst.
At present, the reforming method mainly adopts an ionization method, a high-temperature low-pressure reforming method, and provides energy for reaction by using high-voltage electric energy, or heats reformed gas by using high-temperature resistance wires. The invention not only needs complicated and complicated related devices but also provides additional energy to push the reaction to be carried out, and the invention directly utilizes the waste heat of the high-temperature exhaust gas of the engine as a heat source to heat the reforming reaction device to the condition required by the reforming reaction.
Compared with the prior reforming technology, the invention has the following advantages:
1. by utilizing the chemical reaction advantages of light hydrocarbon fuel and diesel oil, the light hydrocarbon/diesel oil fuel reforming system of the engine is provided. The invention can directly utilize the high-temperature tail gas waste heat of the engine to carry out various reforming reactions (including steam reforming, partial oxidation reforming, water gas shift reaction and the like) on the engine fuel, the light hydrocarbon fuel and the steam to generate the H-rich gas2The reformed gas of CO reduces the link of resistance wire heating, namely reduces the cost and greatly reduces the temperature of the waste gas in the exhaust pipe, thereby reducing the generation of nitrogen oxide and the generation of carbon monoxideAnd the pollution to the natural environment is reduced.
2. The reforming reaction device is designed, and the reaction mechanism of the fuel is optimized and fully utilized to carry out the reforming reaction design. The invention uses light hydrocarbon fuel, diesel oil and steam to mix to produce hydrogen, which produces H2The efficiency is high, and the on-line preparation of hydrogen is realized;
3. ingenious setting and the connection in the aspect of each device, the abundant fuel oil feeding device that has used carries out the reforming reaction with other three big devices, make full use of engine exhaust's high temperature waste heat heats the reforming reaction device in order to reach the reforming reaction and take place required temperature condition, avoid providing extra fuel storage device or hydrogen holding vessel, improved the security and reduced entire system's volume, reduced the load of engine, not only be the utilization to waste gas resource but also reduced combustion cost and manufacturing cost.
Drawings
Fig. 1 is a schematic diagram of the light hydrocarbon/diesel fuel reforming system of the present invention.
Fig. 2 is a schematic structural view of a reforming reaction apparatus according to the present invention.
In the figure: 1-diesel exhaust, 2-gas mixer, 3-steam, 4-inert gas Ar, 5-atomized light hydrocarbon fuel, 6-reforming reaction device, 7-atomized diesel, 8-diesel atomizer, 9-exhaust gas pipe, 10-light hydrocarbon fuel atomizer, 11-diesel flow control valve, 12-light hydrocarbon flow control valve, 13-light hydrocarbon fuel pump, 14-light hydrocarbon fuel tank, 15-diesel, 16-diesel pump, 17-reformed gas, 18-diesel tank, 19-diesel pressure device, 20-oil injector, 21-exhaust valve, 22-intake valve, 23-combustion chamber, 24-cylinder, 25-mixed gas, 26-reforming reactor, 27-reactor shell, 28-reforming catalyst, 29-reflux drum, 30-temperature compensator.
Detailed Description
As shown in fig. 1, the light hydrocarbon fuel reforming system of the present invention includes a light hydrocarbon fuel supply device, a diesel fuel supply device, a reforming reaction device 6, and a gas mixer 2. The gas mixer 2 is arranged behind the light hydrocarbon fuel supply device, the reforming reaction device 6 is arranged behind the gas mixer 2, the diesel oil supply device is arranged in a diesel oil 15 engine, the diesel engine tail gas 1 is discharged into a tail gas exhaust pipe 9 from an exhaust valve 21 to heat the reforming reaction device 6 and then is discharged into the atmosphere, the temperature of the engine tail gas can be different under different working conditions, and therefore a temperature compensator 30 is arranged inside the reforming reaction device 6 to meet the reaction temperature under different working conditions, and the reforming reaction can normally occur.
The light hydrocarbon fuel supply device comprises a light hydrocarbon fuel tank 14, a light hydrocarbon fuel pump 13, a light hydrocarbon flow control valve 12 and a light hydrocarbon fuel atomizer 10, wherein the light hydrocarbon fuel tank 14, the light hydrocarbon fuel pump 13, the light hydrocarbon flow control valve 12 and the light hydrocarbon fuel atomizer 10 are connected through a light hydrocarbon fuel conveying pipe in sequence. Light hydrocarbon fuel supply device provides atomizing light hydrocarbon fuel 5 to gas mixer 2, is equipped with light hydrocarbon fuel pump 13 and light hydrocarbon flow control valve 12 behind the light hydrocarbon fuel jar 14, and light hydrocarbon fuel atomizer 10 installs behind light hydrocarbon fuel pump 13, and atomizing light hydrocarbon fuel 5 carries in gas mixer 2 through light hydrocarbon fuel delivery pipe. The light hydrocarbon fuel atomizer 10 is communicated with a first branch air inlet pipe of the gas mixer 2.
A second air inlet pipe connected with a diesel oil tank 18 is fixedly arranged at one end of the gas mixer 2, a diesel atomizer 8 is arranged on the second air inlet pipe, and a small amount of atomized diesel oil 7 can be introduced into the gas mixer 2 through the diesel atomizer 8. The other end of the gas mixer 2 is respectively provided with a third gas inlet pipe and a fourth gas inlet pipe, and the third gas inlet pipe and the fourth gas inlet pipe are respectively a water vapor 3 gas inlet pipe and an inert gas Ar 4 gas inlet pipe.
The diesel oil supply device comprises a diesel oil tank 18, a high-pressure fuel oil supply system, an oil injector 20, a diesel oil pump 16, a diesel oil flow control valve 11 and a diesel oil 15 gasifier, wherein the diesel oil pump 16 and the diesel oil flow control valve 11 are sequentially connected through a pipeline and arranged above the diesel oil tank 18, and a diesel oil atomizer 8 is arranged behind the diesel oil flow control valve 11. One path of diesel oil in the diesel oil tank 18 is directly supplied to the combustion chamber 23 of the cylinder 24 through a high-pressure fuel oil supply system, and the other path of diesel oil enters the diesel atomizer 8 through the diesel oil pump 16 and the diesel oil flow control valve 11 and further enters the gas mixer 2, the high-pressure fuel oil supply system comprises a diesel oil supercharging device 19 and an oil injector 20, the diesel oil supercharging device 19 in the embodiment can be a diesel oil supercharging pump, and the diesel oil 15 in the diesel oil tank 18 is supercharged through the diesel oil supercharging pump and then sprayed into the combustion chamber 23 of the cylinder 24 through the oil injector 20 to participate in combustion.
As shown in fig. 2, the reforming reaction device 6 includes a reforming reactor 26, a reactor shell 27, a reforming catalyst 28 and a reflux cylinder 29, the reforming reactor 6 is used for generating a reformed gas 17, an inlet of the reforming reactor 6 is connected with an outlet of the gas mixer 2, the mixed gas enters the reforming reactor 6, the reforming reactor 26 generates a reforming reaction with the reforming catalyst 28 by using waste heat of exhaust gas to generate the reformed gas 17, the reformed gas 17 flows out of an air outlet of the reforming reactor 26, is deflected by the reflux cylinder 29, fully reacts with the reforming catalyst 28 on the surface of the reforming reactor 26, finally passes through an opening end of the reflux cylinder 29, and is output to the cylinder 24 from a gap between the reflux cylinder 29 and the reactor shell 27 to participate in combustion. The reforming reaction device 6 is integrally arranged inside the exhaust gas exhaust pipe 9, the reactor shell 27 is also a heat exchange pipe wall at the same time, so that the reforming reactor 26 is directly heated by high-temperature exhaust gas to reach the temperature and pressure required by the reforming reaction of the mixed gas, a temperature compensator 30 is arranged in the reforming reaction device 6, the temperature compensator 30 comprises an auxiliary heater and a temperature sensor, when the exhaust gas of the engine is insufficiently preheated, the temperature sensor is used for monitoring the temperature in the reforming reactor 26 and starting the auxiliary heater through a controller, so that the internal temperature of the reforming reactor 26 under different working conditions is met, the internal temperature of the reforming reactor 26 is maintained above 400 ℃, and the reforming reaction normally occurs. In the embodiment of the invention, the reforming reactor 26 is a cylinder with an open end, the open end of the cylinder is connected with the outlet of the gas mixer 2, the periphery of the cylinder is of a honeycomb-shaped air outlet structure, the reforming catalyst 28 is coated on the outer surface of the cylinder of the reforming reactor, the reflux cylinder is also a cylinder with an open end, the inner diameter of the reflux cylinder is larger than the outer diameter of the reforming reactor 26, the reflux cylinder is sleeved at the closed end of the reforming reactor 26, the mixed gas comes out of honeycomb holes of the reforming reactor 26 and then contacts with the reforming catalyst 28 to generate reforming reaction to form reformed gas, the reformed gas can not be directly sent out from the outlet of the reforming reactor when contacting with the reflux cylinder, particularly the mixed gas coming out of the closed end of the reforming reactor 26 moves along the open end of the reflux cylinder under the baffling effect of the reflux cylinder, the contact time of the reformed gas and the reforming catalyst, then the gas flow flows to the outlet of the rectifying reaction device through the gap between the outer side of the reflux cylinder and the inner part of the reactor shell.
The tail end of the outlet of the reforming reaction device 6 is communicated with an inlet valve 22 of a diesel engine 15, an exhaust valve 21 of a cylinder 24 is communicated with an exhaust gas exhaust pipe 9, the reforming reactor 26 is externally surrounded by a heat exchange pipe wall, and the reaction and the heat exchange are more sufficient through a reflux cylinder 29.
The light hydrocarbon fuel reforming method comprises the following steps:
first, light hydrocarbon fuel passes through light hydrocarbon fuel pump 13 from light hydrocarbon fuel tank 14, and light hydrocarbon flow control valve 12 gets into light hydrocarbon fuel atomizer 10 with the velocity of flow of 0.2L/h and produces atomizing light hydrocarbon fuel 5, and then enters into gas mixer 2.
Secondly, the diesel oil 15 passes through a diesel oil pump 16 from a diesel oil tank 18, and the diesel oil flow control valve 11 enters a diesel oil atomizer 8 at the flow rate of 1L/h to generate atomized diesel oil 7, and then enters a gas mixer 2. The other path is injected into a cylinder 24 through an injector 20 of a high-pressure fuel supply system to provide diesel 15 for the diesel 15 engine.
Thirdly, sufficient water vapor 3 is introduced from the other feeding pipe of the gas mixer 2.
And fourthly, the diesel engine tail gas 1 with the temperature up to 550 ℃ is discharged through the tail gas exhaust pipe 9, and the high-temperature waste heat is utilized to heat the reforming reactor 26 so as to reach the temperature of about 400 ℃ required by the reforming reaction. The reforming reactor 26 is provided with a temperature compensator 30, and the temperature compensator 30 comprises an auxiliary heater and a temperature sensor to meet the internal temperature of the reforming reactor 26 under different working conditions, so that the internal temperature of the reforming reactor 26 is maintained at more than 400 ℃ to ensure that the reforming reaction normally occurs.
And fifthly, introducing a proper amount of inert gas Ar 4 from the charging pipe at the uppermost part of the gas mixer 2 to push all the mixed gas to move downwards to enter the reforming reaction device 6, wherein the inert gas Ar 4, the water vapor 3, the atomized diesel oil 7 and the atomized light hydrocarbon fuel 5 form mixed gas 25.
Sixthly, the mixed gas 25 formed by the atomized light hydrocarbon fuel 5, the inert gas Ar 4, the atomized diesel oil 7 and the steam 3 is subjected to high temperature and reforming of a catalyst Pt/CeO in a reforming reaction device 62-Al2O3Under the action of the catalyst, the reforming reaction is as follows: the steam 3+ the atomized light hydrocarbon fuel 5+ the atomized diesel oil 7 generate reformed gas 17 containing hydrogen, carbon monoxide and methane at a high temperature of 400 ℃ and under the action of a catalyst.
Seventhly, the reforming reaction of the device mainly comprises coupled steam reforming and autothermal reforming. The chemical reaction equation for coupled steam reforming occurs as follows: CH (CH)x+ diesel oil + H2O＝CH4+CO(g)+H2，CH4(g)+H2O(g)＝CO(g)+3H2(g) This reaction occurs at the surface of the reforming reactor 26 within the reforming reactor unit, provided that it is at a high temperature. The chemical formula of the autothermal reforming reaction of the diesel oil, the light hydrocarbon and the oxygen is CHx + diesel oil + O2This reaction also proceeds inside the reforming reaction device 6, under conditions of high temperature, CO + H2O + H2.
Eighthly, the reformed gas 17 is directly conveyed to the cylinder 24 and participates in combustion in the cylinder 24, the combusted diesel engine tail gas 1 enters the tail gas exhaust pipe 9 through an exhaust port, and the high-temperature waste heat of the combusted diesel engine tail gas is used for heating the reforming reactor 26 to reach the temperature required by the reforming reaction.
And ninthly, circulating the steps.
Claims (6)
1. A light hydrocarbon/diesel fuel reforming system characterized by: the device comprises a light hydrocarbon fuel supply device, a diesel oil supply device, a reforming reaction device and a gas mixer, wherein a carrier gas inlet pipe and a steam inlet pipe are arranged on the gas mixer, the light hydrocarbon fuel supply device is used for supplying atomized light hydrocarbon fuel, the diesel oil supply device is used for supplying atomized diesel oil, the atomized light hydrocarbon fuel and the diesel oil enter the gas mixer through a pipeline to form mixed gas together with the carrier gas and the steam, the mixed gas enters the reforming reaction device to carry out reforming reaction, and the reformed gas generated in the reforming reaction device is sent into a combustion chamber of an engine cylinder through the pipeline to participate in combustion;
the reforming reaction device is arranged in a tail gas exhaust pipe of the cylinder, and the temperature required by the reforming reaction is kept through the waste heat of the tail gas of the diesel engine;
the light hydrocarbon fuel supply device comprises a light hydrocarbon fuel tank, a light hydrocarbon fuel pump, a light hydrocarbon flow control valve and a light hydrocarbon fuel atomizer which are sequentially connected through a light hydrocarbon fuel conveying pipe, wherein an outlet of the light hydrocarbon fuel atomizer is connected into the gas mixer through a pipeline;
the diesel oil supply device comprises a diesel oil tank, a diesel oil pump, a diesel oil flow control valve and a diesel oil atomizer which are sequentially connected through a diesel oil conveying pipe, wherein an outlet of the diesel oil atomizer is connected into the gas mixer through a pipeline;
the diesel oil supply device also comprises a high-pressure fuel oil supply system, the high-pressure fuel oil supply system comprises a diesel oil supercharging device and an oil injector, and diesel oil in the diesel oil tank is directly fed into a combustion chamber of the cylinder through the diesel oil supercharging device and the oil injector to participate in combustion.
2. The light hydrocarbon/diesel fuel reforming system of claim 1, wherein: the reforming reaction device comprises a reactor shell, a reforming reactor and a reforming catalyst, wherein the reforming reactor is a cylinder with an opening at one end, the opening end of the cylinder is connected with an outlet of the gas mixer, the periphery of the cylinder is of a honeycomb-shaped air outlet structure, the reforming catalyst is coated on the outer surface of the cylinder of the reforming reactor, and the reactor shell is also a heat exchange pipe wall.
3. The light hydrocarbon/diesel fuel reforming system of claim 2, wherein: the reforming catalyst is Pt/CeO2-Al2O3The reactor shell is provided with a heat exchange fin.
4. The light hydrocarbon/diesel fuel reforming system of claim 2, wherein: the reactor shell is internally provided with a reflux cylinder sleeved at the closed end of the reforming reactor, and gaps for air flow to pass through are arranged between the reflux cylinder and the reforming reactor and between the reflux cylinder and the reactor shell.
5. A light hydrocarbon/diesel fuel reforming process using the light hydrocarbon/diesel fuel reforming system of claim 1, comprising the steps of:
step 1, atomizing light hydrocarbon fuel by a light hydrocarbon fuel supply device and then feeding the light hydrocarbon fuel into a gas mixer;
step 2, atomizing diesel oil by a diesel oil supply device and then feeding the atomized diesel oil into a gas mixer;
step 3, the carrier gas and the vapor enter a gas mixer through a gas inlet pipe respectively;
step 4, the carrier gas carries the water vapor, the atomized light hydrocarbon fuel and the diesel oil to enter a reforming reaction device, the mixture reacts under a reforming catalyst to obtain reformed gas, and the reformed gas enters a combustion chamber of the cylinder to participate in combustion;
and 5, the reforming reaction device is arranged in a tail gas exhaust pipe of the cylinder, and the reforming reaction temperature is maintained by heating through the waste heat of the tail gas of the diesel engine.
6. A light hydrocarbon/diesel fuel reforming process as claimed in claim 5, wherein: the carrier gas is inert gas, and the reforming catalyst is Pt/CeO2-Al2O3A catalyst.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0599084A (en) * | 1991-10-07 | 1993-04-20 | Mazda Motor Corp | Fuel reforming device for engine |
| EP1057997A1 (en) * | 1999-05-29 | 2000-12-06 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with fuel cell as current/voltage source |
| JP2002013447A (en) * | 2000-06-30 | 2002-01-18 | Isuzu Ceramics Res Inst Co Ltd | Natural gas reforming internal combustion engine |
| US6502562B1 (en) * | 2001-11-30 | 2003-01-07 | Romeo L. Manalo | Method and apparatus for reforming gas vapors of an internal combustion engine |
| JP2003293867A (en) * | 2002-04-01 | 2003-10-15 | Nissan Motor Co Ltd | Fuel reforming gas engine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439697C (en) * | 2007-01-19 | 2008-12-03 | 合肥工业大学 | Discharging system of diesel engine with mechanism for reconditioning fuel |
| CN101338228A (en) * | 2008-08-29 | 2009-01-07 | 刘均涛 | Vehicle-mounted hydrogen, alcohol, ether and diesel composite fuel made for methanol and engine thereof |
| KR101008402B1 (en) * | 2008-12-19 | 2011-01-14 | 삼성에스디아이 주식회사 | Reformer |
| CN102733944B (en) * | 2012-07-09 | 2014-06-11 | 湖南大学 | System and method for reducing emissions of nitric oxide and carbon smoke of diesel engine simultaneously |
| CN103086324B (en) * | 2013-01-23 | 2014-10-15 | 大连理工大学 | Device and method for carrying out atomization and catalytic reforming on organic liquid fuels |
| US8984864B2 (en) * | 2013-02-04 | 2015-03-24 | Johnson Matthey Public Limited Company | Exhaust system with a reformer catalyst |
| CN105024088B (en) * | 2015-07-02 | 2017-04-19 | 北京建筑大学 | Vehicle-mounted high-temperature fuel cell cold starting system and working method thereof |
| CN105459786B (en) * | 2015-12-31 | 2018-01-30 | 北京建筑大学 | A kind of control system and its method of work of diesel engine auxiliary power source |
| CN106351759B (en) * | 2016-08-31 | 2019-03-26 | 大连理工大学 | The controllable compression ignition engine of the reaction in single-fuel source |
| CN106545438A (en) * | 2016-12-06 | 2017-03-29 | 哈尔滨工业大学 | Waste gas recycles chemical back heating diesel engine |
-
2018
- 2018-12-14 CN CN201811538943.4A patent/CN109630245B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0599084A (en) * | 1991-10-07 | 1993-04-20 | Mazda Motor Corp | Fuel reforming device for engine |
| EP1057997A1 (en) * | 1999-05-29 | 2000-12-06 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine with fuel cell as current/voltage source |
| JP2002013447A (en) * | 2000-06-30 | 2002-01-18 | Isuzu Ceramics Res Inst Co Ltd | Natural gas reforming internal combustion engine |
| US6502562B1 (en) * | 2001-11-30 | 2003-01-07 | Romeo L. Manalo | Method and apparatus for reforming gas vapors of an internal combustion engine |
| JP2003293867A (en) * | 2002-04-01 | 2003-10-15 | Nissan Motor Co Ltd | Fuel reforming gas engine |
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