CN102278240A - Method and device for reducing oil consumption of diesel engine by utilizing catalytic decomposition of oxygen-containing fuels - Google Patents

Method and device for reducing oil consumption of diesel engine by utilizing catalytic decomposition of oxygen-containing fuels Download PDF

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Publication number
CN102278240A
CN102278240A CN2011101522096A CN201110152209A CN102278240A CN 102278240 A CN102278240 A CN 102278240A CN 2011101522096 A CN2011101522096 A CN 2011101522096A CN 201110152209 A CN201110152209 A CN 201110152209A CN 102278240 A CN102278240 A CN 102278240A
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CN
China
Prior art keywords
fuel
catalytic
catalytic decomposition
diesel engine
oxygenated
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CN2011101522096A
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Chinese (zh)
Inventor
龚景松
钟北京
党帅
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清华大学
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Priority to CN2011101522096A priority Critical patent/CN102278240A/en
Publication of CN102278240A publication Critical patent/CN102278240A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Abstract

The invention discloses a method and device for reducing oil consumption of a diesel engine by utilizing catalytic decomposition of oxygen-containing fuels, belonging to the technical of energy saving and emission reduction of combustion of diesel engines. The method comprises the following steps of: conveying the oxygen-containing fuels into a catalytic reactor arranged in a gas exhaust passage of the diesel engine; heating the catalytic reactor by utilizing afterheat of tail gas discharged from a combustion chamber so that the oxygen-containing fuels undergo catalytic decomposition; introducing a generated decomposed gas rich in hydrogen and carbon monoxide to mix with air and then enter the combustion chamber; and spraying emulsified oil from a nozzle, wherein the atomized emulsified oil undergoes evaporating, mixing, igniting and combusting in the combustion chamber to push a piston to do work. According to the device disclosed by the invention, the afterheat of the tail gas of the diesel engine are fully utilized, and the catalytic decomposition of the oxygen-containing fuels can be realized without external energy; meanwhile, the comprehensive fuel saving rate of the diesel engine can reach 10-15 percent by combining the emulsified oil; the emission of pollutants, such as nitrides, carbon fumes and the like can be greatly reduced; and therefore the purposes of energy saving and emission reduction can be achieved.

Description

Utilize the oxygenated fuel catalytic decomposition to reduce the method and the device of engine fuel consumption
Technical field
The invention belongs to diesel combustion energy-conserving and emission-cutting technology field, be specifically related to a kind of method and apparatus that utilizes oxygenated fuel catalytic decomposition and oil emulsion to combine to reduce engine fuel consumption.
Background technique
The temperature of exhaust fume of the middle high speed diesel engine that uses is higher at present, temperature of exhaust fume reaches 500~550 ℃ when high loaded process, carry a large amount of heat energy, be about 40~50% of fuel oil calorific value, not only surrounding environment is formed local " heat island effect ", cause thermo-pollution, and this part high-temperature flue gas with exhaust emissions has very high enthalpy, cause very big energy waste.How utilizing this part waste heat is one of important content of current research.Simultaneously, form NOx and soot in the diesel engine combustion easily, these pollutants are discharged in the air with tail gas, have a strong impact on people's quality of life.
Oil emulsion is meant that a petroleum product (comprising gasoline, kerosene, diesel oil, residual oil, pitch etc.) mixes the ivory mixture that obtains with water and a spot of surface active agent by certain method, can be used as fuel and use on industrial boiler, glass-melting furnace and internal-combustion engine.When oil emulsion is used on diesel engine, can obtain 3~5% fuel saving ratio, pollutant obtains reduction to a certain degree simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of method and apparatus that utilizes oxygenated fuel catalytic decomposition and oil emulsion to combine to reduce engine fuel consumption, realize effective utilization of diesel engine vent gas waste heat, and reduce the oil consumption of diesel engine and the discharging of pollutants such as soot, NOx significantly.
Technological scheme of the present invention is as follows:
A kind of method of utilizing the oxygenated fuel catalytic decomposition to reduce engine fuel consumption is characterized in that this method comprises the steps:
1) catalytic reactor is set in air outlet flue, oxygenated fuel is sent into catalytic reactor, utilize the tail gas heatable catalytic reactor of discharging, make oxygenated fuel generation catalytic decomposition from the firing chamber;
2) decomposition gas that is rich in hydrogen and carbon monoxide of catalytic decomposition generation is sent into intake duct by pipeline, enters the firing chamber after the air mixing of coming out from air-strainer; Simultaneously, oil emulsion is sprayed into the firing chamber, mix, the burning of fighting with the mixed gas that intake duct enters, and then promote the piston acting by nozzle.
Used oxygenated fuel of the present invention comprises methyl alcohol, ethanol and dimethyl ether; The water content of used oil emulsion is 10%~30%.The used oxygenated fuel and the mass percent of oil emulsion are 5%~15%.
A kind of device that utilizes the oxygenated fuel catalytic decomposition to reduce engine fuel consumption provided by the invention, this device comprises firing chamber, intake duct, air-strainer, air outlet flue, nozzle and fuel tank, it is characterized in that, in described air outlet flue, catalytic reactor is set, the fuel inlet of this catalytic reactor links to each other with the oxygenated fuel tank by the oxygenated fuel pipeline, and the gas outlet of catalytic reactor is connected with intake duct by gas pipeline.
The present invention has the following advantages and the high-lighting effect: system of the present invention combines catalytic decomposition, oil emulsion and the using waste heat from tail gas utilization of oxygenated fuel, do not need the outside to provide energy just can realize the catalytic decomposition of oxygenated fuel, and the gas mixture after will decomposing feeds the firing chamber, simultaneously, by nozzle oil emulsion is sprayed into the firing chamber, mix, catch fire, burn with the mixed gas that intake duct enters.Ratio by control oxygenated fuel and oil emulsion addition, can be applied to generating with on diesel engine, train power traction locomotive and the Hyundai Motor, and reaching the purpose that reduces fuel consume and pollutant emission significantly, comprehensive fuel saving ratio can reach 10%~15%.
Description of drawings
Fig. 1 utilizes oxygenated fuel catalytic decomposition and oil emulsion to combine to reduce the system schematic of engine fuel consumption.
Among the figure, the 1-firing chamber; 2-oxygenated fuel tank; The 3-air outlet flue; 4-oxygenated fuel pipeline; The 5-catalytic reactor; The 6-fuel tank; The 7-nozzle; The 8-gas pipeline; 9-air-strainer, 10-intake duct.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 utilizes oxygenated fuel catalytic decomposition and oil emulsion to combine to reduce the system schematic of engine fuel consumption, this system contains combuster 1, intake duct 10, air outlet flue 3, catalytic reactor 5, air-strainer 9, fuel tank 6, nozzle 7 and oxygenated fuel tank 2, catalytic reactor 5 is placed in the air outlet flue 3, its fuel inlet links to each other with the oxygenated fuel tank by oxygenated fuel pipeline 4, and gas outlet is connected with intake duct 10 by gas pipeline 8.
The used oxygenated fuel of the present invention generally adopts methyl alcohol, ethanol and dimethyl ether; The water content of used oil emulsion is usually 10%~30%.The used oxygenated fuel and the mass percent of oil emulsion are 5%~15%.
Because catalytic reactor is arranged in the air outlet flue of diesel engine, the high-temperature residual heat that utilizes tail gas is as catalytic reaction temperature (in 500~550 ℃ of scopes), catalyst system therefor should be selected the catalyzer that is applicable to this temperature conditions for use, what the present invention adopted is to be the copper base low temperature catalyst of active component with copper, but does not get rid of the low temperature catalyst of other types.
Working procedure of the present invention is as follows: at first start diesel engine, after treating that diesel engine is stable, oxygenated fuel flows out through oxygenated fuel pipeline 4 from the oxygenated fuel tank and enters in the catalytic reactor 5, absorb the heat of the air outlet flue inner exhaust gas of diesel engine, temperature raises, catalytic reaction takes place on the copper-based catalysts surface, generation contains micromolecular decomposition gases such as hydrogen, carbon monoxide, methane, decomposition gas enters the intake duct 10 and the air mixing of coming out from air-strainer 9 of diesel engine through gas pipeline 8, enter in the firing chamber 1 then together; Simultaneously, the oil emulsion that flows out from fuel tank 6 enters nozzle 7 through after the supercharging, and is atomized into the liquid mist, and with the mixed gas blending that enters from intake duct, evaporate, catch fire, burn, the high-temperature combustion product of formation promotes piston and does work.
The oxygenated fuel catalytic decomposition forms is rich in evaporation and the ignition process that micromolecular decomposition gases such as hydrogen and carbon monoxide can effectively improve oil emulsion, and can further improve the combustion process of fuel, himself also be a kind of fuel simultaneously, in combustion process, discharge heat, make the burning of diesel engine more near isochoric combustion, thereby make the present invention can effectively reduce the oil consumption of diesel engine, comprehensive fuel saving ratio reaches 10~15%; Can also effectively reduce the characteristics of pollutant in conjunction with oil emulsion, thereby make the discharging of pollutants such as soot, NOx of diesel engine also reduce greatly.Simultaneously, the catalytic decomposition of oxygenated fuel has absorbed the waste heat of diesel engine vent gas, makes the temperature of tail gas reduce, and has realized the heat recovery of diesel engine vent gas and effectively utilization, has reduced energy consumption.In actual application, also can realize optimal operating condition, guarantee the stable operation of diesel engine under the low energy consumption condition by the coupling control of oil emulsion and oxygenated fuel addition.
Embodiment:
As oxygenated fuel, carry out catalytic reaction with methyl alcohol with copper-based catalysts (with copper is active component, contains a spot of zinc and aluminium); The moisture content of oil emulsion is 20%, is 5%, 10% and 15% to experimentize respectively with the mass percent of methyl alcohol and oil emulsion, and experimental result shows, compares with common diesel combustion, and its comprehensive fuel saving ratio is all in 10~15% scopes.

Claims (5)

1. a method of utilizing the oxygenated fuel catalytic decomposition to reduce engine fuel consumption is characterized in that this method comprises the steps:
1) catalytic reactor (5) is set in air outlet flue (3), oxygenated fuel is sent into catalytic reactor, utilize the tail gas heatable catalytic reactor of discharging, make oxygenated fuel generation catalytic decomposition from the firing chamber;
2) decomposition gas that is rich in hydrogen and carbon monoxide of catalytic decomposition generation is sent into intake duct by pipeline, enters the firing chamber after the air mixing of coming out from air-strainer; By nozzle oil emulsion is sprayed into the firing chamber simultaneously, mix, the burning of fighting with the mixed gas that intake duct enters, and then promote the piston acting.
2. the method for utilizing the oxygenated fuel catalytic decomposition to reduce engine fuel consumption according to claim 1 is characterized in that used oxygenated fuel comprises methyl alcohol, ethanol and dimethyl ether.
3. the method for utilizing the oxygenated fuel catalytic decomposition to reduce engine fuel consumption according to claim 1 is characterized in that the water content of used oil emulsion is 10%~30%.
4. the method for utilizing the oxygenated fuel catalytic decomposition to reduce engine fuel consumption according to claim 1 is characterized in that the used oxygenated fuel and the mass percent of oil emulsion are 5%~15%.
5. device that utilizes the oxygenated fuel catalytic decomposition to reduce engine fuel consumption, this device comprises firing chamber (1), intake duct (10), air-strainer (9), air outlet flue (3), nozzle (7) and fuel tank (6), it is characterized in that, catalytic reactor (5) is set in described air outlet flue, the fuel inlet of this catalytic reactor links to each other with oxygenated fuel tank (2) by oxygenated fuel pipeline (4), and the gas outlet of catalytic reactor is connected with intake duct (10) by gas pipeline (8).
CN2011101522096A 2011-06-08 2011-06-08 Method and device for reducing oil consumption of diesel engine by utilizing catalytic decomposition of oxygen-containing fuels CN102278240A (en)

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CN2011101522096A CN102278240A (en) 2011-06-08 2011-06-08 Method and device for reducing oil consumption of diesel engine by utilizing catalytic decomposition of oxygen-containing fuels

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CN2011101522096A CN102278240A (en) 2011-06-08 2011-06-08 Method and device for reducing oil consumption of diesel engine by utilizing catalytic decomposition of oxygen-containing fuels

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103291507A (en) * 2012-06-04 2013-09-11 摩尔动力(北京)技术股份有限公司 Fuel enrichment engine utilizing exhaust heat
CN110821653A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel ignition chamber type four-stroke engine based on reformed gas and combustion control method
CN110821659A (en) * 2018-08-07 2020-02-21 大连理工大学 Reformed gas-based single-fuel ignition chamber type two-stroke engine and combustion control method
CN110821655A (en) * 2018-08-07 2020-02-21 大连理工大学 Reformed gas-based single-fuel plasma nozzle type two-stroke engine and combustion control method
CN110821666A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel spark plug type four-stroke engine and combustion control method
CN110821652A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel ignition chamber type two-stroke engine based on reformed gas and combustion control method
CN110821658A (en) * 2018-08-07 2020-02-21 大连理工大学 Single-fuel ignition chamber type four-stroke engine based on reformed gas and combustion control method
CN110821665A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel plasma nozzle type two-stroke engine based on reformed gas and combustion control method
CN110821650A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel ignition chamber type two-stroke engine and combustion control method
CN110821661A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel compression-ignition four-stroke engine based on reformed gas and combustion control method
CN110821641A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel and control method thereof
CN110821639A (en) * 2018-08-07 2020-02-21 大连理工大学 Multi-mode engine with high-energy ignition fuel and control method thereof
CN110821643A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel
CN110821651A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel plasma nozzle type two-stroke engine and combustion control method
CN110821654A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel spark plug type four-stroke engine based on reformed gas and combustion control method
CN110821664A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel ignition chamber type four-stroke engine and combustion control method
CN110821662A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel compression-ignition two-stroke engine based on reformed gas and combustion control method
CN110821638A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel and control method thereof
CN110821642A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel and control method thereof
CN110821660A (en) * 2018-08-07 2020-02-21 大连理工大学 Reformed gas-based single-fuel spark plug type four-stroke engine and combustion control method
CN110821640A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel and control method thereof
CN110821663A (en) * 2018-08-07 2020-02-21 大连理工大学 Single-fuel compression-ignition two-stroke engine based on reformed gas and combustion control method

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103291507A (en) * 2012-06-04 2013-09-11 摩尔动力(北京)技术股份有限公司 Fuel enrichment engine utilizing exhaust heat
CN110821639A (en) * 2018-08-07 2020-02-21 大连理工大学 Multi-mode engine with high-energy ignition fuel and control method thereof
CN110821659A (en) * 2018-08-07 2020-02-21 大连理工大学 Reformed gas-based single-fuel ignition chamber type two-stroke engine and combustion control method
CN110821655A (en) * 2018-08-07 2020-02-21 大连理工大学 Reformed gas-based single-fuel plasma nozzle type two-stroke engine and combustion control method
CN110821666A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel spark plug type four-stroke engine and combustion control method
CN110821652A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel ignition chamber type two-stroke engine based on reformed gas and combustion control method
CN110821658A (en) * 2018-08-07 2020-02-21 大连理工大学 Single-fuel ignition chamber type four-stroke engine based on reformed gas and combustion control method
CN110821665A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel plasma nozzle type two-stroke engine based on reformed gas and combustion control method
CN110821650A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel ignition chamber type two-stroke engine and combustion control method
CN110821661A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel compression-ignition four-stroke engine based on reformed gas and combustion control method
CN110821641A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel and control method thereof
CN110821653A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel ignition chamber type four-stroke engine based on reformed gas and combustion control method
CN110821643A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel
CN110821651A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel plasma nozzle type two-stroke engine and combustion control method
CN110821654A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel spark plug type four-stroke engine based on reformed gas and combustion control method
CN110821664A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel ignition chamber type four-stroke engine and combustion control method
CN110821662A (en) * 2018-08-07 2020-02-21 大连理工大学 Dual-fuel compression-ignition two-stroke engine based on reformed gas and combustion control method
CN110821638A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel and control method thereof
CN110821642A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel and control method thereof
CN110821660A (en) * 2018-08-07 2020-02-21 大连理工大学 Reformed gas-based single-fuel spark plug type four-stroke engine and combustion control method
CN110821640A (en) * 2018-08-07 2020-02-21 大连理工大学 Ignition chamber type engine with high-energy ignition fuel and control method thereof
CN110821663A (en) * 2018-08-07 2020-02-21 大连理工大学 Single-fuel compression-ignition two-stroke engine based on reformed gas and combustion control method

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Application publication date: 20111214