CN117386531A - Ammonia engine exhaust gas reforming treatment system and method - Google Patents
Ammonia engine exhaust gas reforming treatment system and method Download PDFInfo
- Publication number
- CN117386531A CN117386531A CN202311148202.6A CN202311148202A CN117386531A CN 117386531 A CN117386531 A CN 117386531A CN 202311148202 A CN202311148202 A CN 202311148202A CN 117386531 A CN117386531 A CN 117386531A
- Authority
- CN
- China
- Prior art keywords
- preset
- ammonia
- fuel
- engine
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 422
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 211
- 238000002407 reforming Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000446 fuel Substances 0.000 claims abstract description 219
- 239000007789 gas Substances 0.000 claims abstract description 131
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000001257 hydrogen Substances 0.000 claims abstract description 49
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 41
- 239000002912 waste gas Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims description 36
- 239000003570 air Substances 0.000 claims description 34
- 208000012839 conversion disease Diseases 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 2
- 238000003672 processing method Methods 0.000 claims 4
- 238000002485 combustion reaction Methods 0.000 abstract description 39
- 239000003344 environmental pollutant Substances 0.000 abstract description 16
- 231100000719 pollutant Toxicity 0.000 abstract description 16
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 46
- 230000001276 controlling effect Effects 0.000 description 10
- 238000010531 catalytic reduction reaction Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9431—Processes characterised by a specific device
-
- 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
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/047—Decomposition of ammonia
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
- F02D19/021—Control of components of the fuel supply system
- F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0227—Means to treat or clean gaseous fuels or fuel systems, e.g. removal of tar, cracking, reforming or enriching
-
- 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
- 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
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/14—Nitrogen oxides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses an ammonia engine waste gas reforming treatment system and method, which are applied to the technical field of waste gas treatment, and can realize on-line hydrogen-doped combustion of an ammonia engine, effectively improve the thermal efficiency of the engine and reduce the emission of combustion pollutants. The system comprises: a preset fuel source module for providing ammonia fuel; an ammonia engine comprising an engine input and an engine output; the device comprises a preset reformer, a control unit and a control unit, wherein the preset reformer comprises an exhaust gas input end, an exhaust gas output end, a fuel input end and a reformed gas output end and is used for reforming ammonia fuel to obtain hydrogen-rich mixed gas; the denitration reactor is preset and is used for carrying out denitration reaction on the waste gas to obtain target exhaust gas; the ammonia engine comprises a preset control unit, a fuel source module and a fuel supply module, wherein the preset control unit is used for acquiring a first operation parameter of the ammonia engine, determining a preset supply amount of ammonia fuel provided by the preset fuel source module according to the first operation parameter, and adjusting the ammonia fuel output amount of the preset fuel source module.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a system and a method for reforming waste gas of an ammonia engine.
Background
At present, the ship engine fuel mainly comprises diesel oil and methane, and the tail gas of the ship engine contains a large amount of carbon oxides, which is contrary to the development concept of the green ship. The ammonia fuel is used as zero carbon energy, has the advantages of low production cost, zero carbon emission and the like, and can effectively reduce the emission of greenhouse gases. Therefore, marine ammonia-fueled engines will become the dominant green development in the future. However, the ammonia fuel has high ignition energy and low combustion speed, which results in problems of difficult cold start and unstable thermal efficiency of the ammonia engine. In addition, there is a large amount of NO in ammonia engine exhaust gas x Ammonia escapes. Therefore, the above technical problems need to be solved.
Disclosure of Invention
In order to solve at least one of the technical problems, the invention provides an ammonia engine waste gas reforming treatment system and method, which can realize on-line hydrogen-doped combustion of an ammonia engine, effectively improve the thermal efficiency of the engine and reduce the emission of combustion pollutants.
In one aspect, an embodiment of the present invention provides an ammonia engine exhaust gas reforming treatment system, including:
a pre-set fuel source module for providing ammonia fuel;
the ammonia engine comprises an engine input end and an engine output end, and the engine input end is connected with the preset fuel source module;
The device comprises a preset reformer, a fuel supply module and a fuel supply module, wherein the preset reformer comprises an exhaust gas input end, an exhaust gas output end, a fuel input end and a reformed gas output end, the exhaust gas input end is connected with the engine output end, the fuel input end is connected with the preset fuel supply module, the reformed gas output end is connected with the engine input end, and the preset reformer is used for reforming the ammonia fuel to obtain hydrogen-rich mixed gas;
the device comprises a preset denitration reactor, a target exhaust gas and a tail gas emission end, wherein the preset denitration reactor comprises a first denitration input end, a second denitration input end and the tail gas emission end, the first denitration input end is connected with the waste gas output end, the second denitration input end is connected with the preset fuel source module, the preset denitration reactor is used for carrying out denitration reaction on waste gas to obtain the target exhaust gas, and the tail gas emission end is used for exhausting the target exhaust gas;
the ammonia engine comprises a preset fuel source module, a preset control unit and an ammonia engine, wherein the preset fuel source module is used for supplying ammonia fuel to the ammonia engine, and the ammonia engine is used for supplying ammonia fuel to the ammonia engine; wherein the preset supply amount includes a first input amount to be provided to the ammonia engine, a second input amount to be provided to a preset reformer, and a third input amount to be provided to a preset denitration reactor through the preset fuel source module.
According to some embodiments of the invention, the system further comprises:
the premixing device comprises a premixing input end, a second premixing input end, a third premixing input end and a premixing output end, wherein the first premixing input end is connected with a preset fuel source module, the second premixing input end is connected with an air path, the third premixing input end is connected with a reformed gas output end, the premixing output end is connected with an engine input end, and the premixing device is used for mixing fuel, air and hydrogen-rich mixed gas and inputting the mixed gas into the ammonia engine.
According to some embodiments of the invention, the system further comprises:
the plasma power supply is connected with the preset reformer and the preset denitration reactor, and is used for providing electric energy for the preset denitration reactor and the preset reformer.
According to some embodiments of the invention, the system further comprises:
the emission analyzer is arranged between the first denitration input end and the waste gas output end, and is used for detecting the component concentration data of the waste gas discharged by the waste gas output end of the preset reformer.
According to some embodiments of the invention, the preset fuel source module comprises:
a fuel storage unit for storing the ammonia fuel;
a first mass flow meter disposed between the fuel storage unit and the first premix input, the first mass flow meter for controlling a first input of the ammonia fuel into the premixer;
a second mass flow meter disposed between the fuel storage unit and the fuel input end, the second mass flow meter being for controlling a second input amount of the ammonia fuel to the preset reformer;
the third mass flowmeter is arranged between the fuel storage unit and the second denitration input end and is used for controlling the ammonia fuel to be input into a third input amount of the preset denitration reactor.
On the other hand, the embodiment of the invention also provides a method for reforming the exhaust gas of the ammonia engine, which comprises the following steps:
acquiring a first operating parameter of an ammonia engine;
determining a preset supply of ammonia fuel for a preset fuel source module according to the first operating parameter; wherein the preset supply amount includes a first input amount to be provided to the ammonia engine, a second input amount to be provided to a preset reformer, and a third input amount to be provided to a preset denitration reactor by the preset fuel source module;
Adjusting an ammonia fuel output of the preset fuel source module according to the preset supply amount; wherein the ammonia fuel output comprises a first fuel output to the ammonia engine, a second fuel output to the pre-determined reformer, and a third fuel output to the pre-determined denitration reactor via the pre-determined fuel source module.
According to some embodiments of the invention, the first operating parameter includes intake pressure data, excess air ratio, output power data, cylinder pressure data;
the determining a preset supply of ammonia fuel to a preset fuel source module based on the first operating parameter includes:
determining a first input provided by the preset fuel source module to a premixer according to the intake pressure data and the excess air ratio;
and determining a second input amount provided by the preset fuel source module to the preset reformer according to the output power data and the cylinder pressure data.
According to some embodiments of the invention, the method further comprises:
acquiring component concentration data obtained by detection of a preset emission analyzer;
and determining a third input amount provided by the preset fuel source module to the preset denitration reactor according to the component concentration data.
According to some embodiments of the invention, the adjusting the ammonia fuel output of the preset fuel source module according to the preset supply comprises:
acquiring mass flow data of a preset mass flowmeter; the preset mass flowmeter comprises a first mass flowmeter, a second mass flowmeter and a third mass flowmeter;
and controlling the opening of the preset mass flowmeter according to the mass flow data and the preset supply quantity, and adjusting the ammonia fuel output quantity.
According to some embodiments of the invention, the method further comprises:
acquiring a second operating parameter of the ammonia engine; wherein the second operating parameter comprises engine exhaust gas temperature data and exhaust gas flow data;
when the reforming efficiency of the preset reformer is determined to be smaller than the preset hydrogen production efficiency according to the second operation parameter, controlling a plasma power supply to start, and providing electric energy for the preset reformer;
and when the denitration reaction conversion efficiency of the preset denitration reactor is smaller than the preset conversion rate according to the component concentration data, controlling the plasma power supply to start, and providing electric energy for the preset denitration reactor.
The ammonia engine exhaust gas reforming treatment system provided by the embodiment of the invention has at least the following beneficial effects: in the embodiment of the invention, the preset fuel source module is respectively connected with the ammonia engine, the preset reformer and the preset denitration reactor so as to provide ammonia fuel through the preset fuel source module. Correspondingly, in the embodiment of the invention, the reformed gas output end of the preset reformer is connected with the input end of the engine so as to reform the ammonia fuel provided by the preset fuel source module through the preset reformer to realize online hydrogen production, so that hydrogen-rich mixed gas is obtained, and the waste gas output by the ammonia engine is connected to the waste gas input end, so that the waste gas output by the ammonia engine can be utilized to provide heat for the ammonia reforming hydrogen production of the preset reformer, and the online hydrogen production efficiency is effectively improved. In the embodiment of the invention, the reformed gas output end is connected with the engine input end so as to input the hydrogen-rich mixed gas obtained by reforming the preset reformer into the ammonia engine, so that the ammonia engine can realize hydrogen-doped combustion, the thermal efficiency of the ammonia engine is effectively improved, and the emission of combustion pollutants is reduced. Meanwhile, in the embodiment of the invention, the exhaust gas output end of the preset reformer is connected with the first denitration input end, and the second denitration input end is connected with the preset fuel source module, so that the exhaust gas is subjected to denitration reduction in a mode of carrying out denitration reaction on the cooled exhaust gas to obtain target exhaust gas, and the target exhaust gas is discharged through the exhaust gas discharge end, so that the discharge of combustion pollutants is effectively reduced. Further, in the embodiment of the invention, the preset control unit is respectively connected with the preset fuel source module and the ammonia engine to determine the preset supply quantity of the ammonia fuel required to be provided by the preset fuel source module by acquiring the first operation parameter of the ammonia engine, such as the first fuel output quantity of the preset fuel source module to the ammonia engine, the second fuel output quantity of the preset fuel source module to the preset reformer and the third fuel output quantity of the preset denitration reactor, so as to control the ammonia fuel output quantity of the preset fuel source module, more accurately control the reforming hydrogen production of the preset reformer and the denitration reaction in the preset denitration reactor, further realize the online hydrogen-doped combustion of the ammonia engine, improve the thermal efficiency of the engine, improve the denitration efficiency and reduce the emission of combustion pollutants.
Drawings
FIG. 1 is a schematic diagram of an ammonia engine exhaust gas reforming treatment system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a pre-determined reformer according to an embodiment of the present disclosure;
fig. 3 is a flowchart of an ammonia engine exhaust gas reforming treatment method according to an embodiment of the present invention.
Detailed Description
The embodiments described in the present application should not be construed as limitations on the present application, but rather as many other embodiments as possible without inventive faculty to those skilled in the art, are intended to be within the scope of the present application.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.
Before describing embodiments of the present application, related terms referred to in the present application will be first described.
Selective catalytic reduction reactor (SCR, selective Catalytic Reduction): is used for reducing Nitrogen Oxides (NO) in tail gas x ) Emission technology by introducing urea or ammonia into exhaust gas and performing catalytic reaction on SCR catalyst to thereby convert NO x Is converted into nitrogen and water.
At present, the ship engine fuel mainly comprises diesel oil and methane, and the tail gas of the ship engine contains a large amount of carbon oxides, which is contrary to the development concept of the green ship. The ammonia fuel is used as zero carbon energy, has the advantages of low production cost, zero carbon emission and the like, and can effectively reduce the emission of greenhouse gases. Therefore, marine ammonia-fueled engines will become the dominant green development in the future. However, the ammonia fuel has high ignition energy and low combustion speed, which results in problems of difficult cold start and unstable thermal efficiency of the ammonia engine. In addition, there is a large amount of NO in ammonia engine exhaust gas x Ammonia escapes. Therefore, the above technical problems need to be solved.
Based on this, referring to fig. 1, an embodiment of the present invention provides an ammonia engine exhaust gas reforming treatment system including a preset ammonia fuel module, an ammonia engine 140, a preset reformer 150, a preset denitration reactor 180, and a preset control unit 190. Specifically, in the embodiment of the present invention, the preset ammonia fuel module is respectively connected to the ammonia engine 140, the preset reformer 150 and the preset denitration reactor 180, and provides ammonia fuel for the ammonia engine 140, the preset reformer 150 and the preset denitration reactor 180 through the preset fuel module. Accordingly, in the embodiment of the present invention, the ammonia engine 140 is provided with an engine input end and an engine output end, and is connected with the preset fuel module through the engine output end, so as to connect the ammonia fuel of the preset fuel module to the ammonia engine 140. Meanwhile, referring to fig. 2, the preset reformer 150 in the embodiment of the present invention includes an exhaust gas input 153, an exhaust gas output 154, a fuel input 151, and a reformed gas output 152. Accordingly, in the embodiment of the invention, the exhaust gas input end 153 is connected with the output end of the engine, so that the exhaust gas generated by the combustion of the ammonia engine 140 is input into the preset reformer 150 through the exhaust gas path, and heat is provided for the ammonia reforming hydrogen production reaction in the preset reformer 150, thereby effectively improving the hydrogen production efficiency and realizing online hydrogen production. Meanwhile, in the embodiment of the present invention, the fuel input end 151 is connected to a preset fuel source module, so as to obtain the required ammonia fuel from the preset fuel source module. In addition, in the embodiment of the present invention, the reformed gas output end 152 is connected to the engine input end, and the reformed hydrogen-rich mixed gas is input into the ammonia engine 140, so that the ammonia engine 140 combusts in combination with ammonia fuel, air and the hydrogen-rich mixed gas, thereby realizing hydrogen-doped combustion and effectively improving the thermal efficiency of fuel.
In addition, the preset denitration reactor 180 in the embodiment of the present invention includes a first denitration input end, a second denitration input end, and an exhaust emission end. Specifically, in the embodiment of the present invention, the first denitration input end is connected to the exhaust gas output end 154 of the preset reformer 150, and the exhaust gas cooled by the preset reformer 150 is input into the preset denitration reactor 180 to perform a denitration reaction, so as to reduce the emission of pollutants. Meanwhile, in the embodiment of the present invention, the second denitration input end of the preset denitration reactor 180 is connected to the preset fuel source module, so as to obtain the required ammonia raw material through the preset fuel source module. According to the embodiment of the invention, the denitration treatment is performed on the nitrogen oxides in the exhaust gas through the preset denitration reactor 180, so that the target exhaust gas is obtained, the emission of the nitrogen oxides is effectively reduced, and the emission of the exhaust gas pollutants of the ammonia engine is reduced. Accordingly, the embodiment of the present invention discharges the target exhaust gas after the denitration treatment through the exhaust gas discharge end of the preset denitration reactor 180.
Further, the preset fuel module, the preset reformer 150 and the preset denitration reactor 180 are controlled by the preset control unit 190. Specifically, the preset control unit 190 in the embodiment of the present invention is electrically connected to the preset fuel module, the preset denitration reactor 180 of the preset reformer 150, and the ammonia engine 140, respectively. The preset control unit 190 in the embodiment of the present invention first obtains the first operation parameter of the ammonia engine 140 to determine the preset supply amount provided by the preset fuel source module according to the first operation parameter, including the first input amount required by the preset fuel source module to be provided to the ammonia engine 140, the second input amount provided to the preset reformer 150, and the third input amount provided to the preset denitration reactor 180. Then, the embodiment of the invention controls the preset fuel source module to adjust the ammonia fuel output according to the preset supply amount by the preset control unit 190 and controls the corresponding preset reformer 150 and the preset denitration reactor 180 to work, thereby realizing online hydrogen production and tail gas denitration, further realizing hydrogen-doped combustion of the ammonia engine, effectively improving the thermal efficiency of combustion and reducing the emission of combustion pollutants.
In the operation process of the above embodiment, the embodiment of the present invention first controls the preset fuel source module to input the ammonia fuel to the ammonia engine 140 for combustion through the preset control unit 190, and at the same time, obtains the first operation parameter of the ammonia engine 140, so as to determine the preset supply amount of the ammonia fuel of the preset fuel source module through the first operation parameter. Next, the embodiment of the present invention controls the ammonia fuel output of the preset fuel source module through the preset control unit 190. Specifically, the embodiment of the present invention first inputs the exhaust gas of the ammonia engine 140 into the preset reformer 150 to improve the efficiency of ammonia reforming hydrogen production by using the heat of the exhaust gas. Accordingly, the preset fuel source module is controlled by the preset control unit 190 to adjust the ammonia fuel output, and the ammonia fuel with the second input is provided to the preset reformer, so that the preset reformer 150 can accurately perform ammonia reforming hydrogen production, and the online hydrogen production efficiency is effectively improved. In addition, in the embodiment of the present invention, the hydrogen-rich mixed gas obtained by reforming the preset reformer 150 is input into the ammonia engine 140, and the preset control unit 190 controls the preset fuel module to adjust the first input amount provided to the ammonia engine 140, so that the ammonia engine 140 mixes the hydrogen-rich mixed gas with the corresponding ammonia fuel and air to perform hydrogen-doped combustion, thereby effectively improving the thermal efficiency of the engine and reducing the generation and emission of nitrogen oxides. Further, in the embodiment of the present invention, the exhaust gas cooled by the preset reformer 150 is input into the preset denitration reactor to perform the denitration reaction. Accordingly, in the embodiment of the present invention, after the exhaust gas discharged from the exhaust gas output end of the preset reformer 150 is input into the first denitration input end of the preset denitration reactor, the preset fuel source module is controlled by the preset control unit 190 to adjust the third input amount provided to the preset denitration reactor, so that the preset denitration reactor 180 performs denitration treatment on the exhaust gas to obtain the target exhaust gas, thereby further reducing the emission of nitrogen oxides in the exhaust gas and reducing the emission of combustion pollutants.
Referring to FIG. 1, in some embodiments of the present invention, an ammonia engine exhaust gas reforming treatment system provided by embodiments of the present invention further includes a premixer 130. Specifically, the premixer 130 in the embodiment of the present invention includes a first premix input, a second premix input, a third premix input, and a premix output. In the embodiment of the present invention, the first premixed input is connected to the preset fuel source module, the second premixed input is connected to the air path, and the third premixed input is connected to the reformed gas output 152. It is easy to understand that in the embodiment of the present invention, the first premixing input end receives the ammonia fuel input by the preset fuel source module, and at the same time, air is obtained through an air path connected to the second premixing input end, and the hydrogen-rich mixed gas obtained by reforming the preset reformer 150 is input to the premixer 130 through the third premixing input end, so that the fuel, the air and the hydrogen-rich mixed gas are fully mixed, and the mixed gas is input to the ammonia engine 140 for combustion, thereby effectively improving the combustion effect and the higher combustion efficiency.
Referring to fig. 1, in some embodiments of the present invention, an ammonia engine exhaust gas reforming treatment system provided by embodiments of the present invention further includes a plasma power supply 160. Specifically, in the embodiment of the present invention, the preset reformer 150 and the preset denitration reactor 180 are both connected to the plasma power supply 160. In this embodiment, the plasma power supply 160 supplies power to the pre-set denitration reactor 180 and the pre-set reformer 150. It should be noted that, in the embodiment of the present invention, the plasma electrode is disposed inside the preset reformer, and the plasma power supply 160 provides electric energy for the other electrode of the plasma inside the preset reformer 150, so as to generate low-temperature plasma to promote the reforming hydrogen production reaction, thereby effectively improving the efficiency of reforming hydrogen production. In addition, in the embodiment of the invention, the plasma power supply 160 supplies power to the plasma electrode inside the preset denitration reactor 180 to generate plasma, so as to improve the conversion efficiency of the denitration reaction and further reduce the emission of combustion pollutants in the tail gas.
It is noted that in some embodiments of the present invention, the pre-set denitration reactor 180 includes a Selective Catalytic Reduction (SCR) reactor. According to the embodiment of the invention, the waste gas after being preheated and utilized is input into the selective catalytic reduction reactor, and the denitration reaction is carried out by combining with the denitration reaction provided by the preset fuel source module. Meanwhile, in the embodiment of the invention, the plasma power supply 160 supplies power to the plasma electrode in the selective catalytic reduction reactor to generate plasma, so that the low-temperature conversion efficiency is improved. In the embodiment of the invention, the plasma power supply 160 provides electric energy for the preset reformer and the selective catalytic reduction reactor, so that the efficiency of ammonia fuel reforming hydrogen production and waste gas catalytic reduction is further improved in a mode of effectively reducing the reaction activation energy by utilizing a low-temperature plasma technology.
Referring to FIG. 1, in some embodiments of the present invention, an ammonia engine exhaust gas reforming treatment system provided by embodiments of the present invention further includes a preset emissions analyzer 170. Specifically, in the embodiment of the present invention, the preset emissions analyzer 170 is disposed between the first denitration input and the exhaust gas output 154. The embodiment of the present invention detects the component concentration data of the exhaust gas discharged from the exhaust gas output end of the preset reformer 150 through the preset discharge analyzer 170. Accordingly, in the embodiment of the present invention, the third input amount provided by the preset fuel module to the preset denitration reactor 180 is determined through the detected component concentration data, that is, the component concentration data is analyzed, so as to determine the amount of ammonia required for the denitration reaction, and further, the preset control unit 190 controls the preset fuel module to input the corresponding amount of ammonia to the preset denitration reactor 180, so that better implementation is achieved Denitration effect. Exemplary, embodiments of the present invention measure NO, N in real time by a preset emissions analyzer 170 2 O、NO 2 、NH 3 Equal component concentration data, regulating the supply of reductant NH by a preset fuel source module 3 NH is caused to 3 /NO x The ratio is about 1.0 to achieve the optimal denitration reduction boundary conditions. In addition, the embodiment of the invention collects signals such as the exhaust gas temperature, the exhaust gas flow rate and the like of the ammonia engine 140 through the preset control unit 190, and controls the plasma power supply 160 connected with the preset reformer 150 to be turned on when the reforming efficiency can not reach the hydrogen production requirement under the exhaust gas working condition, thereby improving the hydrogen production efficiency by ammonia reforming. Meanwhile, when the conversion efficiency of the denitration reaction is lower than the preset conversion efficiency at the exhaust gas temperature, the plasma power supply 160 connected with the preset denitration reactor 180, such as an SCR reactor, is controlled to be turned on, so that the conversion efficiency of the denitration reaction is improved.
Referring to fig. 1, in some embodiments of the present invention, the preset fuel source module includes a fuel storage unit 110, a first mass flow meter 121, a second mass flow meter 122, and a third mass flow meter 123. Specifically, embodiments of the present invention store ammonia fuel via fuel storage unit 110. Meanwhile, in the embodiment of the present invention, the first mass flowmeter is disposed between the fuel storage unit 110 and the first premixed input end, the second mass flowmeter 122 is disposed between the fuel storage unit 110 and the fuel input end 151, and the third mass flowmeter 123 is disposed between the fuel storage unit 110 and the second denitration input end. It is easy to understand that in the embodiment of the present invention, the first mass flowmeter 121 controls the amount of ammonia fuel output from the fuel storage unit 110 to the premixer 130, the second mass flowmeter 122 controls the amount of ammonia output from the fuel storage unit 110 to the preset reformer 150, and the third mass flowmeter 123 controls the amount of ammonia output from the fuel storage unit 110 to the preset denitration reactor 180, so as to achieve more accurate control of the preset fuel source module. In addition, in the embodiment of the present invention, the first mass flowmeter 121, the second mass flowmeter 122, and the third mass flowmeter 123 are all connected to the preset control unit 190, and a control instruction is issued to the corresponding mass flowmeter through the preset control unit 190, so that stability and accuracy of ammonia output of the fuel storage unit 110 are effectively improved.
Referring to fig. 3, an embodiment of the present invention provides a method for reforming exhaust gas of an ammonia engine, which can realize on-line hydrogen-doped combustion of the ammonia engine, effectively improve the thermal efficiency of the engine, and reduce the emission of combustion pollutants. The method of the embodiment of the invention includes, but is not limited to, step 210, step 220 and step 230.
Specifically, the process of the present embodiment applied to the ammonia engine exhaust gas reforming treatment system as shown in fig. 1 includes the steps of:
s210: a first operating parameter of an ammonia engine is obtained.
S220: a preset supply of ammonia fuel for a preset fuel source module is determined based on the first operating parameter. Wherein the preset supply amount includes a first input amount to be provided to the ammonia engine, a second input amount to be provided to the preset reformer, and a third input amount to be provided to the preset denitration reactor by the preset fuel source module.
S230: the ammonia fuel output of the preset fuel source module is adjusted based on the preset supply. Wherein the ammonia fuel output comprises a first fuel output to the ammonia engine, a second fuel output to the pre-determined reformer, and a third fuel output to the pre-determined denitration reactor via the pre-determined fuel source module.
In the working process of the specific embodiment, the first operation parameter of the ammonia engine is firstly obtained. Specifically, the first operation parameter in the embodiment of the invention refers to the relevant parameter of the ammonia engine in the operation process, such as pressure, power and other data. Next, an embodiment of the present invention determines a preset supply of ammonia fuel to a preset fuel source module via a first operating parameter. Specifically, the preset supply amount in the embodiment of the invention includes a first input amount provided to the ammonia engine by the preset fuel source module, a second input amount provided to the preset reformer, and a third input amount provided to the preset denitration reactor. The embodiment of the invention comprises an ammonia reforming hydrogen production reaction and a denitration reaction in the process of treating the combustion of the ammonia engine. Thus, the present invention is started by ammoniaThe running state of the machine determines the ammonia amount required by the ammonia reforming hydrogen production reaction and the denitration reaction, thereby effectively improving the efficiency of on-line hydrogen production, reducing the content of nitrogen oxides in waste gas and reducing the emission of combustion pollutants. Correspondingly, the embodiment of the invention inputs the hydrogen-rich mixed gas obtained by hydrogen production through ammonia reforming into the ammonia engine, and determines the first input quantity provided for the ammonia engine, thereby realizing on-line hydrogen-doped combustion, effectively improving the thermal efficiency of the engine and reducing the emission of combustion pollutants such as nitrogen oxides and the like. Further, embodiments of the present invention adjust the ammonia fuel output of the preset fuel source module based on the preset supply. Accordingly, the ammonia fuel output in the embodiment of the present invention includes a first fuel output from the preset fuel source module to the premixer, a second fuel output from the preset reformer, and a third fuel output from the preset denitration reactor. According to the embodiment of the invention, the ammonia fuel output of the preset fuel source module is controlled to respectively and accurately control the ammonia fuel output to the ammonia engine, the preset reformer and the preset denitration reactor, so that the efficiency of the ammonia reforming hydrogen production reaction and the denitration reaction is effectively improved, the online hydrogen-adding combustion of the ammonia engine is realized, the thermal efficiency of the engine is improved, and meanwhile, the NO is reduced x And the emission of combustion pollutants. In addition, the embodiment of the invention processes the escaping ammonia and the nitrogen oxides in the waste gas by carrying out denitration reaction on the waste gas, thereby further reducing the emission of atmospheric pollutants.
In some embodiments of the invention, the first operating parameter includes intake pressure data, air excess factor, output power data, cylinder pressure data. Accordingly, determining a preset supply of ammonia fuel for a preset fuel source module based on the first operating parameter includes, but is not limited to, the steps of:
a first input provided by the preset fuel source module to the premixer is determined based on the intake pressure data and the excess air ratio.
A second input provided by the preset fuel source module to the preset reformer is determined based on the output power data and the cylinder pressure data.
In this embodiment, the first operation parameters acquired in the embodiment of the present invention include intake pressure data, excess air ratio, output power data, and cylinder pressure data of the ammonia engine. Specifically, the intake pressure data in the embodiment of the invention refers to pressure data in an intake system of an ammonia engine during operation. In the embodiment of the invention, the intake pressure data may be expressed in the form of absolute pressure or relative pressure, where absolute pressure refers to a pressure value relative to vacuum, and relative pressure refers to a pressure value relative to atmospheric pressure. The excess air ratio (Lambda) in the examples of the present invention refers to the ratio of the amount of air entering the combustion chamber to the theoretically required amount of air. Normally, the excess air ratio of the engine should be close to 1, i.e. the theoretically required air amount is equal to the air amount actually entering the combustion chamber. In the embodiment of the invention, the excess air ratio is calculated by the air quantity actually entering the combustion chamber and the theoretically required air quantity. Accordingly, the value of the excess air ratio can be used to determine the combustion efficiency and emissions of the engine. For example, when the excess air ratio is less than 1, it means that the amount of air entering the combustion chamber is insufficient, which may result in incomplete combustion and high concentration of exhaust gas emissions. Conversely, when the excess air ratio is greater than 1, it means that the amount of air entering the combustion chamber is excessive, possibly resulting in a decrease in combustion temperature and a decrease in power. Therefore, the embodiment of the invention determines the first input quantity provided by the preset fuel module to the premixer through the air inlet pressure data and the excess air coefficient, so that the proportion of the hydrogen-rich mixed gas, the air and the ammonia in the premixer reaches the preset proportion, thereby effectively improving the thermal efficiency of the engine, improving the running characteristic of the ammonia engine and reducing the emission of atmospheric pollutants. Further, the output power data in the embodiment of the invention refers to the power generated by the ammonia engine in unit time. In addition, in the embodiment of the invention, cylinder pressure data refers to the pressure change condition in each cylinder of the ammonia engine in the working process so as to evaluate the working state and the performance of the engine. Accordingly, the embodiment of the invention determines the second input quantity required by the preset fuel source module to be provided for the preset reformer through the output power data and the cylinder pressure data of the ammonia engine, so as to control the preset fuel source module to input the corresponding ammonia fuel for the preset reformer, and improve the efficiency and the effect of hydrogen production by ammonia reforming.
In some embodiments of the present invention, the method for reforming exhaust gas of an ammonia engine provided in the embodiments of the present invention further includes, but is not limited to, the following steps:
and acquiring the component concentration data detected by a preset emission analyzer.
And determining a third input amount provided by the preset fuel source module to the preset denitration reactor according to the component concentration data.
In this embodiment, the component concentration data is detected by the preset emission analyzer, and the third input amount provided by the preset fuel source module to the preset denitration reactor is determined according to the component concentration data. Specifically, in the embodiment of the present invention, the preset emission analyzer is disposed between the exhaust gas output end of the preset reformer and the first denitration input end of the preset denitration reactor, and the exhaust gas components discharged from the exhaust gas output end are detected by the preset emission analyzer to obtain corresponding component concentration data, such as NO and N 2 O、NO 2 、NH 3 And the like. Then, the embodiment of the invention determines the proportion data of each reaction raw material in the denitration reaction through the detected component concentration data, so as to determine the third input quantity required by the preset fuel source module and provided for the preset denitration reactor. It is easy to understand that in the embodiment of the invention, the mode of determining the ammonia amount input into the preset denitration reactor by detecting the component concentration in the exhaust gas in real time through the preset emission analyzer can enable the proportion of ammonia and nitrogen oxides to better reach the optimal denitration reduction boundary condition, thereby effectively improving the efficiency and effect of denitration reaction and reducing the emission of nitrogen oxides.
In some embodiments of the present invention, adjusting the ammonia fuel output of the preset fuel source module based on the preset supply includes, but is not limited to, the steps of:
and acquiring mass flow data of a preset mass flowmeter. The preset mass flowmeter comprises a first mass flowmeter, a second mass flowmeter and a third mass flowmeter.
And controlling the opening of a preset mass flowmeter according to the mass flow data and the preset supply quantity, and adjusting the ammonia fuel output quantity.
In this particular embodiment, the present embodiment adjusts ammonia fuel output via a mass flow meter. Specifically, the embodiment of the invention firstly acquires mass flow data of a preset mass flowmeter. The preset mass flowmeter in the embodiment of the invention comprises a first mass flowmeter, a second mass flowmeter and a third mass flowmeter. Correspondingly, the mass flow data acquired by the embodiment of the invention comprises the mass flow data corresponding to the first mass flow meter, the second mass flow meter and the third mass flow meter. Further, according to the embodiment of the invention, the opening of the preset mass flowmeter is controlled according to the acquired mass flow data and the preset supply quantity, so that the ammonia fuel output quantity is adjusted. According to the embodiment of the invention, the opening degree required by the current mass flowmeter is determined according to the mass flow data of each mass flowmeter and the corresponding preset supply quantity, such as the first input quantity, the second input quantity and the third input quantity, so that the accurate control of ammonia fuel output is realized by controlling the corresponding mass flowmeter to adjust the opening degree.
In some embodiments of the present invention, the ammonia engine exhaust gas reforming method provided by the embodiments of the present invention further includes, but is not limited to, the following steps:
a second operating parameter of the ammonia engine is obtained. Wherein the second operating parameter comprises engine exhaust gas temperature data and exhaust gas flow data.
And when the reforming efficiency of the preset reformer is determined to be smaller than the preset hydrogen production efficiency according to the second operation parameter, controlling the plasma power supply to start, and providing electric energy for the plasma electrode in the preset reformer.
When the denitration reaction conversion efficiency of the preset denitration reactor is determined to be smaller than the preset conversion rate according to the component concentration data, controlling the plasma power supply to start, and providing electric energy for the preset denitration reactor.
In this particular embodiment, an embodiment of the present invention first obtains a second operating parameter of the ammonia engine. The second operating parameter in embodiments of the present invention specifically includes engine exhaust gas temperature data and exhaust gas flow data. Accordingly, the embodiment of the invention judges the reforming efficiency of the ammonia reforming hydrogen production reaction through the second operation parameter. When the reforming efficiency of the preset reformer is determined to be smaller than the preset hydrogen production efficiency, that is, the ammonia reforming hydrogen production efficiency is smaller than the preset hydrogen production efficiency, the embodiment of the invention controls the plasma power supply to start so as to supply power to the plasma motor inside the preset reformer. It is easy to understand that the embodiment of the invention collects signals such as the temperature of the engine exhaust gas, the flow of the exhaust gas and the like through the preset control unit so as to analyze whether the current reforming hydrogen production efficiency can meet the hydrogen production requirement. When the current ammonia reforming hydrogen production efficiency is determined to be lower than the preset hydrogen production efficiency, the embodiment of the invention starts the plasma power supply to supply power to the plasma electrode in the preset reformer through the plasma power supply, so as to generate low-temperature plasma and promote reforming hydrogen production reaction. Correspondingly, the embodiment of the invention analyzes the denitration reaction conversion efficiency of the preset denitration reactor according to the component concentration data to determine whether the current denitration reaction conversion efficiency is smaller than the preset conversion rate. When the conversion efficiency of the current denitration reaction is determined to be smaller than the preset conversion rate, the embodiment of the invention controls the starting of the plasma power supply to provide electric energy for the preset denitration reactor, so that the plasma electrode in the preset denitration reactor generates plasma, and the low-temperature conversion efficiency is improved.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiment, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (10)
1. An ammonia engine exhaust gas reforming treatment system, comprising:
a pre-set fuel source module for providing ammonia fuel;
the ammonia engine comprises an engine input end and an engine output end, and the engine input end is connected with the preset fuel source module;
the device comprises a preset reformer, a fuel supply module and a fuel supply module, wherein the preset reformer comprises an exhaust gas input end, an exhaust gas output end, a fuel input end and a reformed gas output end, the exhaust gas input end is connected with the engine output end, the fuel input end is connected with the preset fuel supply module, the reformed gas output end is connected with the engine input end, and the preset reformer is used for reforming the ammonia fuel to obtain hydrogen-rich mixed gas;
the device comprises a preset denitration reactor, a target exhaust gas and a tail gas emission end, wherein the preset denitration reactor comprises a first denitration input end, a second denitration input end and the tail gas emission end, the first denitration input end is connected with the waste gas output end, the second denitration input end is connected with the preset fuel source module, the preset denitration reactor is used for carrying out denitration reaction on waste gas to obtain the target exhaust gas, and the tail gas emission end is used for exhausting the target exhaust gas;
The ammonia engine comprises a preset fuel source module, a preset control unit and an ammonia engine, wherein the preset fuel source module is used for supplying ammonia fuel to the ammonia engine, and the ammonia engine is used for supplying ammonia fuel to the ammonia engine; wherein the preset supply amount includes a first input amount to be provided to the ammonia engine, a second input amount to be provided to a preset reformer, and a third input amount to be provided to a preset denitration reactor through the preset fuel source module.
2. The ammonia engine exhaust gas reforming processing system of claim 1, further comprising:
the premixing device comprises a premixing input end, a second premixing input end, a third premixing input end and a premixing output end, wherein the first premixing input end is connected with a preset fuel source module, the second premixing input end is connected with an air path, the third premixing input end is connected with a reformed gas output end, the premixing output end is connected with an engine input end, and the premixing device is used for mixing fuel, air and hydrogen-rich mixed gas and inputting the mixed gas into the ammonia engine.
3. The ammonia engine exhaust gas reforming processing system of claim 1, further comprising:
the plasma power supply is connected with the preset reformer and the preset denitration reactor, and is used for providing electric energy for the preset denitration reactor and the preset reformer.
4. The ammonia engine exhaust gas reforming processing system of claim 1, further comprising:
the emission analyzer is arranged between the first denitration input end and the waste gas output end, and is used for detecting the component concentration data of the waste gas discharged by the waste gas output end of the preset reformer.
5. The ammonia engine exhaust gas reforming processing system of claim 2, wherein the pre-set fuel source module comprises:
a fuel storage unit for storing the ammonia fuel;
a first mass flow meter disposed between the fuel storage unit and the first premix input, the first mass flow meter for controlling a first input of the ammonia fuel into the premixer;
A second mass flow meter disposed between the fuel storage unit and the fuel input end, the second mass flow meter being for controlling a second input amount of the ammonia fuel to the preset reformer;
the third mass flowmeter is arranged between the fuel storage unit and the second denitration input end and is used for controlling the ammonia fuel to be input into a third input amount of the preset denitration reactor.
6. A method for reforming exhaust gas of an ammonia engine, comprising the steps of:
acquiring a first operating parameter of an ammonia engine;
determining a preset supply of ammonia fuel for a preset fuel source module according to the first operating parameter; wherein the preset supply amount includes a first input amount to be provided to the ammonia engine, a second input amount to be provided to a preset reformer, and a third input amount to be provided to a preset denitration reactor by the preset fuel source module;
adjusting an ammonia fuel output of the preset fuel source module according to the preset supply amount; wherein the ammonia fuel output comprises a first fuel output to the ammonia engine, a second fuel output to the pre-determined reformer, and a third fuel output to the pre-determined denitration reactor via the pre-determined fuel source module.
7. The ammonia engine exhaust gas reforming processing method of claim 6, wherein the first operating parameter comprises intake pressure data, excess air factor, output power data, cylinder pressure data;
the determining a preset supply of ammonia fuel to a preset fuel source module based on the first operating parameter includes:
determining a first input provided by the preset fuel source module to a premixer according to the intake pressure data and the excess air ratio;
and determining a second input amount provided by the preset fuel source module to the preset reformer according to the output power data and the cylinder pressure data.
8. The ammonia engine exhaust gas reforming processing method according to claim 6, characterized in that the method further comprises:
acquiring component concentration data obtained by detection of a preset emission analyzer;
and determining a third input amount provided by the preset fuel source module to the preset denitration reactor according to the component concentration data.
9. The ammonia engine exhaust gas reforming processing method of claim 7, wherein said adjusting the ammonia fuel output of the preset fuel source module according to the preset supply amount comprises:
Acquiring mass flow data of a preset mass flowmeter; the preset mass flowmeter comprises a first mass flowmeter, a second mass flowmeter and a third mass flowmeter;
and controlling the opening of the preset mass flowmeter according to the mass flow data and the preset supply quantity, and adjusting the ammonia fuel output quantity.
10. The ammonia engine exhaust gas reforming processing method according to claim 8, characterized in that the method further comprises:
acquiring a second operating parameter of the ammonia engine; wherein the second operating parameter comprises engine exhaust gas temperature data and exhaust gas flow data;
when the reforming efficiency of the preset reformer is determined to be smaller than the preset hydrogen production efficiency according to the second operation parameter, controlling a plasma power supply to start, and providing electric energy for the preset reformer;
and when the denitration reaction conversion efficiency of the preset denitration reactor is smaller than the preset conversion rate according to the component concentration data, controlling the plasma power supply to start, and providing electric energy for the preset denitration reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311148202.6A CN117386531A (en) | 2023-09-06 | 2023-09-06 | Ammonia engine exhaust gas reforming treatment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311148202.6A CN117386531A (en) | 2023-09-06 | 2023-09-06 | Ammonia engine exhaust gas reforming treatment system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117386531A true CN117386531A (en) | 2024-01-12 |
Family
ID=89462015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311148202.6A Pending CN117386531A (en) | 2023-09-06 | 2023-09-06 | Ammonia engine exhaust gas reforming treatment system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117386531A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889007A (en) * | 2024-03-15 | 2024-04-16 | 潍柴动力股份有限公司 | Control method, control device, ammonia engine system and electronic equipment |
-
2023
- 2023-09-06 CN CN202311148202.6A patent/CN117386531A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117889007A (en) * | 2024-03-15 | 2024-04-16 | 潍柴动力股份有限公司 | Control method, control device, ammonia engine system and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7279143B2 (en) | Plasmatron-catalyst system | |
| US6997142B2 (en) | Internal combustion engine and method of operating internal combustion engine | |
| US7713318B2 (en) | Method of operating a hydrogen generator and method of operating a fuel cell system using a hydrogen generator | |
| CN117386531A (en) | Ammonia engine exhaust gas reforming treatment system and method | |
| US8453433B2 (en) | Exhaust gas purification device for internal combustion engine | |
| EP2216537A1 (en) | Internal combustion engine | |
| CN109404108B (en) | Method and device for calculating NOx emission value of diesel engine | |
| KR20180054269A (en) | Reforming system and reformer operating method using temperature sensor | |
| JP2002079058A (en) | Treatment of combustion exhaust gas of fuel reformer | |
| US20040177607A1 (en) | Internal combustion engine with a fuel cell in an exhaust system | |
| KR102163243B1 (en) | Exhaust purification system of gas heat pump | |
| EP1493482A2 (en) | Exhaust gas aftertreatment system for a power generator | |
| CN113738483A (en) | Control method and device of post-treatment system meeting ultralow emission | |
| US9757692B2 (en) | Method for operating an exhaust gas after-treatment system for an internal combustion engine | |
| JP5206558B2 (en) | Exhaust gas reforming system | |
| KR101262384B1 (en) | Fuel suppling and Exhaust gas purified system in gasoline engine | |
| JPH04346819A (en) | Denitration control device and method | |
| US11746714B2 (en) | Internal combustion engine system with temperature based output control | |
| JP3342497B2 (en) | Method and apparatus for controlling combustion equipment for catalytically purifying exhaust gas, and combustion equipment | |
| US9084968B2 (en) | After treatment device of engine | |
| JP2002316801A (en) | Controller for fuel battery system | |
| JP4525564B2 (en) | Internal combustion engine | |
| CN114718771A (en) | Waste heat treatment system of ammonia fuel hybrid power engine and ship | |
| US20190316506A1 (en) | Exhaust aftertreatment system | |
| JP2011012554A (en) | Reforming catalyst system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |