CN114856765B - Waste gas reforming device - Google Patents

Waste gas reforming device Download PDF

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Publication number
CN114856765B
CN114856765B CN202210373154.XA CN202210373154A CN114856765B CN 114856765 B CN114856765 B CN 114856765B CN 202210373154 A CN202210373154 A CN 202210373154A CN 114856765 B CN114856765 B CN 114856765B
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Prior art keywords
module
catalyst
reformer
exhaust gas
air inlet
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CN202210373154.XA
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CN114856765A (en
Inventor
李格升
张熠
张尊华
黄勇
阮智邦
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • 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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

The invention discloses an exhaust gas reforming device, which comprises a reformer and is provided with plasmaA bulk activating device and a reactor, wherein the reactor is stacked with a catalyst, the catalyst comprises a light/heat double-function catalyst and a heat catalyst, the heat catalyst is wrapped by the light/heat double-function catalyst, and the reformer is used for carrying out an exhaust gas reforming reaction under the action of plasma activation and the catalyst; and the energy supply module is used for supplying electric energy and illumination to the reformer. According to the invention, the plasma activation device is arranged to assist the reforming reaction, so that the temperature required by the reforming reaction is reduced, and the efficiency of the waste gas reforming reaction is improved; the thermal catalyst and the light/heat double-function catalyst are accumulated on the reactor from inside to outside, so that the photo-thermal synergistic catalytic effect is realized, the progress of the waste gas reforming reaction is further deepened by matching with the activation of the plasma, the reaction efficiency is improved, the fuel utilization rate is improved, and the NO of the ammonia engine is reduced x And (4) discharging the amount.

Description

Waste gas reforming device
Technical Field
The invention relates to the technical field of waste gas reforming, in particular to a waste gas reforming device.
Background
With the transformation of energy structures, ammonia gas has attracted wide attention of scholars at home and abroad as a zero-carbon fuel in order to reduce carbon emission, and ammonia engines are becoming more and more popular. Wherein, the ammonia engine exhaust gas reforming technology not only can provide secondary energy for the engine, but also can reduce NO in the ammonia engine exhaust gas x And the like. Conventional ammonia oxidation reforming technology utilizes NH 3 、O 2 The waste heat of the mixed gas heats the waste gas, and simultaneously, the waste gas is combined with the heat released by the oxidation reforming reaction to prepare the hydrogen under the action of the catalyst. However, current ammoxidation reforming reactions are limited to the use of a thermally catalyzed auxiliary reaction process. The efficiency of the ammoxidation reforming reaction and the conversion of the waste cannot be brought to a high level due to the limitation of the temperature of the exhaust gas.
Disclosure of Invention
In order to solve the above technical problems, an embodiment of the present invention provides an exhaust gas reforming apparatus.
The technical scheme adopted by the embodiment of the invention is as follows:
an exhaust gas reformer comprising:
a reformer provided with a plasma activation device and a reactor on which a catalyst is stacked, the catalyst including a photo/thermal dual-function catalyst and a thermal catalyst, the thermal catalyst being encapsulated by the photo/thermal dual-function catalyst, the reformer being configured to perform an exhaust gas reforming reaction by the plasma activation and the catalyst;
and the energy supply module is used for supplying electric energy and illumination to the reformer.
As an optional embodiment, the reformer further includes a gas inlet module, a heating module, a light transmitting module, a gas outlet module and a housing, the gas inlet module is connected to one side of the plasma activating device and one side of the heating module respectively, the heating module and the light transmitting module are disposed on the housing, the housing wraps the plasma activating device and the reactor, one side of the plasma activating device away from the gas inlet module is connected to the gas outlet module, one side of the heating module away from the gas inlet module is connected to the gas outlet module, the gas inlet module is used for introducing exhaust gas emitted by the engine, and the gas outlet module is used for outputting mixed gas generated by the reforming reaction of the exhaust gas to the engine.
As an alternative embodiment, the gas inlet module comprises a first gas inlet connected to one side of the plasma activation device and a second gas inlet connected to one side of the heating module.
As an alternative embodiment, the gas outlet module includes a first gas outlet and a second gas outlet, the first gas outlet is connected to a side of the plasma activation device away from the first gas inlet, and the second gas outlet is connected to a side of the heating module away from the second gas outlet.
As an alternative embodiment, the light-transmitting module is made of a high-temperature-resistant quartz material.
As an alternative embodiment, the housing is made of heat-resistant metal, and the side of the housing facing the plasma activation device is coated with a high-temperature-resistant diffuse reflection material.
As an optional embodiment, the energy supply module includes a power supply module and an illumination module, the power supply module is used for supplying power to the illumination module and the heating module, and illumination emitted by the illumination module enters the reformer through the light-transmitting module.
As an alternative embodiment, the illumination module employs solar LEDs.
As an alternative embodiment, the intensity of the light inside the reformer is controlled by adjusting the distance between the light irradiation module and the light transmission module.
According to the exhaust gas reforming device provided by the embodiment of the invention, the plasma activation device is arranged, and the plasma activation is adopted to assist the reforming reaction, so that the temperature required by the reforming reaction is reduced, and the efficiency of the exhaust gas reforming reaction is improved; the photo-thermal synergistic catalysis effect is realized by accumulating the thermal catalyst and the photo-thermal dual-function catalyst on the reactor from inside to outside, the progress of the waste gas reforming reaction is further deepened by matching with the activation of the plasma, the reaction efficiency is improved, the fuel utilization rate is improved, and the NO of an ammonia engine is reduced x And (4) discharging the amount.
Drawings
FIG. 1 is a schematic structural view of an exhaust gas reforming apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram showing a catalyst stacking manner in the exhaust gas reforming apparatus according to the embodiment of the present invention.
Reference numerals: 101. a reformer; 102. a functional module; 1011. a plasma activation device; 1012. a reactor; 1013. an air intake module; 1014. a heating module; 1015. a light-transmitting module; 1016. an air outlet module; 1017. a housing; 1021. a power supply module; 1022. an illumination module; 201. a light/heat bifunctional catalyst; 202. a thermal catalyst.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
With the transformation of energy structures, ammonia gas has attracted wide attention of scholars at home and abroad as a zero-carbon fuel in order to reduce carbon emission, and ammonia engines are becoming more and more popular. Wherein, the ammonia engine exhaust gas reforming technology not only can provide secondary energy for the engine, but also can reduce NO in the ammonia engine exhaust gas x And the like. Conventional ammoxidation reforming techniques utilize NH 3 、O 2 The waste heat of the mixed gas heats the waste gas, and simultaneously, the waste gas is combined with the heat released by the oxidation reforming reaction to prepare the hydrogen under the action of the catalyst. However, current ammoxidation reforming reactions are limited to the use of a thermally catalyzed auxiliary reaction process.The efficiency of the ammoxidation reforming reaction and the conversion of the waste cannot be brought to a high level due to the limitation of the temperature of the exhaust gas.
Therefore, the embodiment of the invention provides an exhaust gas reforming device, which is provided with a plasma activation device, adopts the plasma activation to assist the reforming reaction, reduces the temperature required by the reforming reaction, and improves the efficiency of the exhaust gas reforming reaction; the thermal catalyst and the light/heat double-function catalyst are accumulated on the reactor from inside to outside, so that the photo-thermal synergistic catalytic effect is realized, the progress of the waste gas reforming reaction is further deepened by matching with the activation of the plasma, the reaction efficiency is improved, the fuel utilization rate is improved, and the NO of the ammonia engine is reduced x And (4) discharging the amount.
As shown in fig. 1 and 2, an embodiment of the present invention provides an exhaust gas reforming apparatus including:
a reformer 101 provided with a plasma activating device 1011 and a reactor 1012, wherein a catalyst is stacked on the reactor 1012, the catalyst comprises a light/heat dual-function catalyst 201 and a heat catalyst 202, the heat catalyst 202 is wrapped by the light/heat dual-function catalyst 201, and the reformer 101 is used for performing an exhaust gas reforming reaction under the action of plasma activation and the catalyst;
and an energy supply module 102 for supplying electric energy and light to the reformer.
The plasma activation device 1011 activates reaction molecules of the exhaust gas reforming reaction (ammonia reforming reaction) by using a plasma activation technology, and reduces the temperature required by the reaction, thereby improving the hydrogen production efficiency by reforming.
Reactor 1012, which is a multi-tube bundle structure, is stacked with hot catalyst 202 and photo/thermal dual-function catalyst 201 from inside to outside. In one embodiment of the present invention, the photocatalytic effect of the photo/thermal bifunctional catalyst 201 promotes surface charge generation by the migration and trapping of photo-generated electrons and holes, while utilizing the generated electrons and holes to participate in the oxidation-reduction reaction. According to the embodiment of the invention, the photo-thermal synergistic catalytic effect is realized through the photo-thermal dual-function catalyst 201 and the thermal catalyst 202, the progress of the waste gas reforming reaction is further deepened by matching with the plasma activation, and the reaction efficiency (hydrogen production efficiency) is improved.
As an alternative embodiment, the reformer 101 further includes an air inlet module 1013, a heating module 1014, a light transmission module 1015, an air outlet module 1016 and a housing 1017, wherein the air inlet module 1013 is connected to one side of the plasma activation device 1011 and one side of the heating module 1014, the heating module 1014 and the light transmission module 1015 are disposed on the housing 1017, the housing 1017 encloses the plasma activation device 1011 and the reactor 1012, one side of the plasma activation device 1011 away from the air inlet module 1013 is connected to the air outlet module 1016, one side of the heating module 1014 away from the air inlet module 1013 is connected to the air outlet module 1016, the air inlet module 1013 is used for introducing exhaust gas discharged from the engine, and the air outlet module 1016 is used for outputting mixed gas generated by the exhaust gas reforming reaction to the engine.
As an alternative embodiment, the gas inlet module 1013 includes a first gas inlet connected to one side of the plasma activation device 1011 and a second gas inlet connected to one side of the heating module 1014.
The gas inlet module 1013 of the embodiment of the present invention divides the exhaust gas into two paths, wherein one path supplements ammonia and oxygen according to the components of the exhaust gas to meet the conditions of the reforming reaction, deepens the progress of the reforming reaction, and increases the hydrogen production yield, and then the exhaust gas is introduced into the reactor 1012 from the first gas inlet via the plasma activation device 1011; the other path is introduced into the heating module 1014 from the second gas inlet to provide part of the heat for the exhaust gas reforming reaction. In an embodiment of the present invention, the heating module 1014 is a cavity structure for providing continuous heat for the exhaust gas reforming reaction.
As an alternative embodiment, the gas outlet module 1016 includes a first gas outlet connected to a side of the plasma activation device 1011 away from the first gas inlet, and a second gas outlet connected to a side of the heating module 1014 away from the second gas outlet.
Specifically, the mixed gas generated by the reforming reaction is output through the first air outlet, the waste gas used for providing heat in the heating module 1014 is output through the second air outlet, and the two outputs are together conveyed to the engine for combustion.
As an alternative embodiment, the light-transmitting module 1015 is made of a high-temperature-resistant quartz material.
As an alternative embodiment, the housing 1017 is made of heat-resistant metal, and the side of the housing 1017 facing the plasma activating device 1011 is coated with a high-temperature-resistant diffuse reflection material.
The high-temperature-resistant diffuse reflection material enables light inside the reformer 101 to be in a diffusion shape, and provides working conditions for photocatalysis.
As an alternative embodiment, the energy supply module 102 includes a power supply module 1021 and an illumination module 1022, the power supply module 1021 is used for supplying power to the illumination module 1022 and the heating module 1014, and illumination emitted by the illumination module 1022 enters the reformer 101 through the light-transmitting module 1015.
In the embodiment of the present invention, the illumination module 1022 is a solar LED, which is energy-saving and environment-friendly. In the embodiment of the present invention, the illumination intensity in the reformer 101 is controlled by adjusting the distance between the illumination module 1022 and the light-transmitting module 1015.
According to the exhaust gas reforming device provided by the embodiment of the invention, the plasma activation device is arranged, and the plasma activation is adopted to assist the reforming reaction, so that the temperature required by the reforming reaction is reduced, and the efficiency of the exhaust gas reforming reaction is improved; the thermal catalyst and the light/heat double-function catalyst are accumulated on the reactor from inside to outside, so that the photo-thermal synergistic catalytic effect is realized, the progress of the waste gas reforming reaction is further deepened by matching with the activation of the plasma, the reaction efficiency is improved, the fuel utilization rate is improved, and the NO of the ammonia engine is reduced x And (4) discharging the amount.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. An exhaust gas reformer, comprising:
a reformer provided with a plasma activation device and a reactor on which a catalyst is stacked, the catalyst including a photo/thermal dual-function catalyst and a thermal catalyst, the thermal catalyst being encapsulated by the photo/thermal dual-function catalyst, the reformer being configured to perform an exhaust gas reforming reaction by the plasma activation and the catalyst;
the energy supply module is used for supplying electric energy and illumination to the reformer;
the reformer also comprises an air inlet module, a heating module, a light transmitting module, an air outlet module and a shell, wherein the air inlet module is respectively connected with one side of the plasma activating device and one side of the heating module, the heating module and the light transmitting module are arranged on the shell, the shell wraps the plasma activating device and the reactor, one side of the plasma activating device, which is far away from the air inlet module, is connected with the air outlet module, one side of the heating module, which is far away from the air inlet module, is connected with the air outlet module, the air inlet module is used for introducing exhaust gas discharged by an engine, and the air outlet module is used for outputting mixed gas generated by reforming reaction of the exhaust gas to the engine;
the air inlet module comprises a first air inlet and a second air inlet, the first air inlet is connected with one side of the plasma activation device, and the second air inlet is connected with one side of the heating module.
2. The exhaust gas reforming apparatus according to claim 1, wherein the gas outlet module comprises a first gas outlet connected to a side of the plasma activation device away from the first gas inlet, and a second gas outlet connected to a side of the heating module away from the second gas outlet.
3. The exhaust gas reformer according to claim 1, wherein the light transmissive module is made of a high temperature quartz material.
4. The exhaust gas reformer set forth in claim 1, wherein said housing is made of a heat-resistant metal, and a side of said housing facing said plasma activating means is coated with a high-temperature-resistant diffuse reflection material.
5. An exhaust gas reforming apparatus as defined in claim 1, wherein said energy supply module comprises a power supply module and an illumination module, said power supply module is used for supplying power to said illumination module and said heating module, illumination emitted by said illumination module enters said reformer through said light transmission module.
6. The exhaust gas reforming device according to claim 5, wherein the illumination module employs solar LEDs.
7. An exhaust gas reformer unit as claimed in claim 5, wherein the intensity of the illumination in the reformer is controlled by adjusting the distance between the illumination module and the light-transmissive module.
CN202210373154.XA 2022-04-11 2022-04-11 Waste gas reforming device Active CN114856765B (en)

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003024770A (en) * 2001-07-11 2003-01-28 Daido Steel Co Ltd Apparatus and method for converting material by using catalyst
JP2009067650A (en) * 2007-09-14 2009-04-02 Kri Inc System for decomposing ammonia
JP2014205599A (en) * 2013-04-15 2014-10-30 株式会社豊田中央研究所 Reforming apparatus
CN103601150B (en) * 2013-11-11 2015-07-15 大连理工大学 Tube-tube type plasma reactor for preparing hydrogen through ammonia decomposition
CN106422699A (en) * 2016-08-29 2017-02-22 浙江工业大学 Method and device for coupling and biologically purifying VOCs under optical/thermal double-driving catalysis
JP6928327B2 (en) * 2017-07-26 2021-09-01 国立大学法人 熊本大学 Method of manufacturing ammonia combustion catalyst and method of utilizing heat generated by ammonia catalyst combustion
CN111852614A (en) * 2019-04-30 2020-10-30 上海必修福企业管理有限公司 Tail gas treatment system and treatment method

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