CN112960646A - Reactor for preparing synthesis gas by reforming liquid fuel with plasma and application - Google Patents
Reactor for preparing synthesis gas by reforming liquid fuel with plasma and application Download PDFInfo
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- CN112960646A CN112960646A CN201911292739.3A CN201911292739A CN112960646A CN 112960646 A CN112960646 A CN 112960646A CN 201911292739 A CN201911292739 A CN 201911292739A CN 112960646 A CN112960646 A CN 112960646A
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- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/323—Catalytic reaction of gaseous or liquid organic compounds other than hydrocarbons with gasifying agents
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- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
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- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/342—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents with the aid of electrical means, electromagnetic or mechanical vibrations, or particle radiations
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- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
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- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0211—Processes for making hydrogen or synthesis gas containing a reforming step containing a non-catalytic reforming step
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1217—Alcohols
- C01B2203/1223—Methanol
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- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1217—Alcohols
- C01B2203/1229—Ethanol
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/12—Feeding the process for making hydrogen or synthesis gas
- C01B2203/1205—Composition of the feed
- C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
- C01B2203/1235—Hydrocarbons
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Abstract
A reactor for preparing synthesis gas by reforming liquid fuel with plasma and application thereof. A fuel and air mixture inlet communicated with the inside of the cylinder is arranged on the side wall surface of the cylinder where a gap is arranged between the high-voltage electrode and the lower sealing cover, and the axis of the fuel and air mixture inlet is tangent to the inner wall surface of the cylinder; a first air inlet communicated with the interior of the cylinder is arranged on the side wall surface of the cylinder, which is between the high-voltage electrode and the upper sealing cover and is close to the upper sealing cover, and the axis of the first air inlet is tangent to the inner wall surface of the cylinder; and a second air inlet communicated with the interior of the cylinder is arranged in the middle of the upper sealing cover. The reactor is additionally provided with two air inlet pipelines of wall air and top air, so that three feeding modes of the wall air, the top air and the air and fuel are realized, and the aim of preventing the fuel from being attached to the wall of the reactor to cause carbon deposition is fulfilled; considering that the thermal expansion coefficients of the high-voltage electrode and the insulating ceramic are different, reserving an expansion space of the high-voltage electrode; the outer part of the fixed screw is sleeved with a ceramic tube.
Description
Technical Field
The invention belongs to the field of plasma chemistry, relates to a reactor and a method for preparing synthesis gas by reforming liquid fuel with plasma, and particularly relates to a method for preparing synthesis gas by reforming four liquid fuels, namely methanol, ethanol, gasoline and diesel oil with plasma.
Technical Field
Synthesis gas (a mixed gas of hydrogen and carbon monoxide) plays a very important role in the chemical industry, and synthesis gas can be prepared by reforming a hydrogen-containing fuel. The traditional catalytic reforming has the defects of high investment, huge equipment, high catalyst activity temperature, slow start, complex flow and easy poisoning and inactivation of the catalyst, and the plasma reforming is widely concerned due to the advantages of compact structure, strong raw material adaptability and quick response. Plasma reforming is usually carried out under atmospheric pressure, and the reaction principle is that high-energy electrons in plasma and fuel molecules undergo inelastic collision, so that the high-energy electrons are ionized, excited or cracked to finally generate a stable product. However, the generation of plasma requires high voltage to be applied between metal electrodes, and plasma reforming has a problem that electrode carbon deposition easily causes unstable discharge, thereby reducing reactor reliability and service life. The invention relates to a reactor and a method for reforming liquid fuel by plasma with high reliability and long service life.
Disclosure of Invention
In order to solve the problems in the prior art, the invention is realized by adopting the following technical scheme:
a reactor for preparing synthetic gas by reforming liquid fuel with plasma comprises a hollow round cylinder body which is made of insulating materials and is provided with an upper end and a lower end, wherein the upper opening end of the cylinder body is provided with an upper sealing cover which is hermetically connected with the upper opening end of the cylinder body; a hollow cylindrical high-voltage electrode coaxial with the cylinder is arranged at the middle lower part in the cylinder, a gap is reserved between the outer wall surface of the high-voltage electrode and the inner wall surface of the cylinder, a gap is reserved between the end surface of the lower opening end of the high-voltage electrode and a lower sealing cover, the high-voltage electrode is connected with the high-voltage output end of an external high-voltage power supply, the lower sealing cover is grounded, and a high-electric-field-intensity area is formed between the high-voltage electrode and the;
a fuel and air mixture inlet communicated with the inside of the cylinder is arranged on the side wall surface of the cylinder where a gap is arranged between the high-voltage electrode and the lower sealing cover, and the axis of the fuel and air mixture inlet is tangent to the inner wall surface of the cylinder;
a first air inlet communicated with the interior of the cylinder is arranged on the side wall surface of the cylinder, which is between the high-voltage electrode and the upper sealing cover and is close to the upper sealing cover, and the axis of the first air inlet is tangent to the inner wall surface of the cylinder;
and a second air inlet communicated with the interior of the cylinder is arranged in the middle of the upper sealing cover.
The outer side wall surface of the upper end of the high-voltage electrode is provided with a circular boss along the radial direction away from the cylinder, the circular boss extends into the side wall of the insulating cylinder, and a gap is reserved between the outer side wall surface of the circular boss and the wall surface material of the insulating cylinder; the inlet axis of the fuel and air mixture inlet or the first air inlet being tangential to the inner wall surface of the barrel means that the inlet axis is tangential to the circular radial cross-section of the inner wall surface of the barrel.
Corresponding bulges are respectively arranged on the upper sealing cover and the lower sealing cover along the radial direction, a connecting rod made of conductive material is arranged between the corresponding bulges on the upper sealing cover and the lower sealing cover,
an insulating material pipe is sleeved outside the connecting rod or an insulating material layer is coated on the connecting rod.
The insulating material is insulating ceramic, and the conductive material is conductive metal.
The fuel is one or more than two of four liquid fuels of methanol, ethanol, gasoline and diesel oil.
The middle part of the lower sealing cover is provided with a material outlet.
Use of the reactor for plasma reforming of liquid fuels; the specific process is as follows,
1) applying a high-voltage electric field on the high-voltage electrode, and forming a high-electric-field-intensity area between the high-voltage electrode and the lower sealing cover;
2) introducing air (entering from a fuel and air mixture inlet) and fuel, top air (entering from a first air inlet) and wall air (entering from a second air inlet) into the reactor, wherein under the condition of a specific oxygen-carbon ratio, the three paths of air are fed according to the volume ratio of 1:3: 2;
3) the external high voltage power supply is turned on and the plasma fuel reforming process is initiated.
Compared with the prior art, the invention has the following advantages:
1. the reactor is additionally provided with two air inlet pipelines of wall air and top air, so that three feeding modes of the wall air, the top air and the air and fuel are realized, and the aim of preventing the fuel from being attached to the wall of the reactor to cause carbon deposition is fulfilled; considering that the thermal expansion coefficients of the high-voltage electrode and the insulating ceramic are different, reserving a high-voltage electrode expansion space, and aiming at preventing the high-temperature linear expansion of the high-voltage electrode from cracking the insulating ceramic to cause the leakage of synthesis gas; the ceramic tube is sleeved outside the fixing screw rod, and the purpose is to prevent the high-voltage electric pole from creeping and breaking down with the metal fixing rod under high temperature.
2. The reactor takes gasoline, diesel oil, methanol and ethanol as target reformate, under the condition of specific oxygen-carbon ratio (O/C), preferably, top air, wall air and air in air bath fuel are fed according to the feeding mode of 1:3:2, so that on one hand, a plasma area is enlarged, active particles are distributed more uniformly, the retention time of reactants is longer, the fuel is ensured to be fully contacted with the plasma, and the fuel treatment capacity of the reactor is increased; on the other hand, unreacted fuel is prevented from being attached to the wall of the reactor, so that the phenomenon of carbon deposition in the reactor is avoided, and particularly unstable discharge caused by the carbon deposition near the high-voltage electrode is avoided.
Drawings
FIG. 1 is a schematic diagram of a reactor for preparing syngas by plasma reforming liquid fuel according to the present invention
1. A first air inlet 2, a second air inlet 3, an upper insulating cylinder 4, a lower insulating cylinder 5, a fuel and air mixture inlet 6, a high-voltage wiring terminal 7, a high-voltage electrode 8, a fixing rod 9 and a tail gas outlet
Detailed Description
A reactor for preparing synthetic gas by reforming liquid fuel with plasma comprises a hollow round cylinder body which is made of insulating materials and is provided with an upper end and a lower end, wherein the upper opening end of the cylinder body is provided with an upper sealing cover which is hermetically connected with the upper opening end of the cylinder body; a hollow cylindrical high-voltage electrode coaxial with the cylinder is arranged at the middle lower part in the cylinder, a gap is reserved between the outer wall surface of the high-voltage electrode and the inner wall surface of the cylinder, a gap is reserved between the end surface of the lower opening end of the high-voltage electrode and a lower sealing cover, the high-voltage electrode is connected with the high-voltage output end of an external high-voltage power supply, the lower sealing cover is grounded, and a high-electric-field-intensity area is formed between the high-voltage electrode and the;
a fuel and air mixture inlet communicated with the inside of the cylinder is arranged on the side wall surface of the cylinder where a gap is arranged between the high-voltage electrode and the lower sealing cover, and the axis of the fuel and air mixture inlet is tangent to the inner wall surface of the cylinder;
a first air inlet communicated with the interior of the cylinder is arranged on the side wall surface of the cylinder, which is between the high-voltage electrode and the upper sealing cover and is close to the upper sealing cover, and the axis of the first air inlet is tangent to the inner wall surface of the cylinder;
and a second air inlet communicated with the interior of the cylinder is arranged in the middle of the upper sealing cover.
The outer side wall surface of the upper end of the high-voltage electrode is provided with a circular boss along the radial direction away from the cylinder, the circular boss extends into the side wall of the insulating cylinder, and a gap is reserved between the outer side wall surface of the circular boss and the wall surface material of the insulating cylinder;
the inlet axis of the fuel and air mixture inlet or the first air inlet being tangential to the inner wall surface of the barrel means that the inlet axis is tangential to the circular radial cross-section of the inner wall surface of the barrel.
Corresponding bulges are respectively arranged on the upper sealing cover and the lower sealing cover along the radial direction, a connecting rod made of conductive material is arranged between the corresponding bulges on the upper sealing cover and the lower sealing cover,
an insulating material pipe is sleeved outside the connecting rod or an insulating material layer is coated on the connecting rod.
The insulating material is insulating ceramic, and the conductive material is conductive metal.
The fuel is one or more than two of four liquid fuels of methanol, ethanol, gasoline and diesel oil.
The middle part of the lower sealing cover is provided with a material outlet.
The reactor structure is as follows: firstly, two air inlet pipelines of wall surface air and top air are added, so that three feeding modes of the wall surface air, the top air and the air and fuel are realized, and the purpose of preventing the fuel from being attached to the wall of the device to cause carbon deposition is realized; secondly, considering that the thermal expansion coefficients of the high-voltage electrode and the insulating ceramic are different, reserving a high-voltage electrode expansion space, and aiming at preventing the high-voltage electrode from cracking the insulating ceramic due to high-temperature linear expansion to cause the leakage of synthesis gas; and the ceramic tube is sleeved outside the fixing screw rod, so that the phenomena of creepage and breakdown with the metal fixing rod at high temperature of the high-voltage electrode are prevented.
The reactor takes gasoline, diesel oil, methanol and ethanol as target reformate, under the condition of specific oxygen-carbon ratio (O/C), preferably, top air, wall air and air in air bath fuel are fed according to the feeding mode of 1:3:2, so that on one hand, a plasma area is enlarged, active particles are distributed more uniformly, the retention time of reactants is longer, the fuel is ensured to be fully contacted with the plasma, and the fuel treatment capacity of the reactor is increased; on the other hand, unreacted fuel is prevented from being attached to the wall of the reactor, so that the phenomenon of carbon deposition in the reactor is avoided, and particularly unstable discharge caused by the carbon deposition near the high-voltage electrode is avoided.
Experiments show that the plasma reforming methanol and ethanol fuel reactor can stably run for 100 hours and has no carbon deposition phenomenon; the plasma reformed gasoline and diesel fuel reactor can stably run for 50 hours without carbon deposition.
Claims (7)
1. A reactor for preparing synthetic gas by reforming liquid fuel with plasma comprises a hollow round cylinder body which is made of insulating materials and is provided with an upper end and a lower end, wherein the upper opening end of the cylinder body is provided with an upper sealing cover which is hermetically connected with the upper opening end of the cylinder body; the middle lower part in the barrel is provided with a hollow cylindrical high-voltage electrode which is coaxial with the barrel, a gap is left between the outer wall surface of the high-voltage electrode and the inner wall surface of the barrel, a gap is left between the end surface of the lower opening end of the high-voltage electrode and the lower sealing cover, the high-voltage electrode is connected with the high-voltage output end of an external high-voltage power supply, the lower sealing cover is grounded, and a high electric field intensity area is formed between the high-voltage electrode and the lower sealing cover, and:
a fuel and air mixture inlet communicated with the inside of the cylinder is arranged on the side wall surface of the cylinder where a gap is arranged between the high-voltage electrode and the lower sealing cover, and the axis of the fuel and air mixture inlet is tangent to the inner wall surface of the cylinder;
a first air inlet communicated with the interior of the cylinder is arranged on the side wall surface of the cylinder, which is between the high-voltage electrode and the upper sealing cover and is close to the upper sealing cover, and the axis of the first air inlet is tangent to the inner wall surface of the cylinder;
and a second air inlet communicated with the interior of the cylinder is arranged in the middle of the upper sealing cover.
2. The reactor of claim 1, wherein:
the outer side wall surface of the upper end of the high-voltage electrode is provided with a circular boss along the radial direction away from the cylinder, the circular boss extends into the side wall of the insulating cylinder, and a gap is reserved between the outer side wall surface of the circular boss and the wall surface material of the insulating cylinder;
the inlet axis of the fuel and air mixture inlet or the first air inlet being tangential to the inner wall surface of the barrel means that the inlet axis is tangential to the circular radial cross-section of the inner wall surface of the barrel.
3. The reactor of claim 1, wherein: corresponding bulges are respectively arranged on the upper sealing cover and the lower sealing cover along the radial direction, a connecting rod made of conductive material is arranged between the corresponding bulges on the upper sealing cover and the lower sealing cover,
an insulating material pipe is sleeved outside the connecting rod or an insulating material layer is coated on the connecting rod.
4. A reactor according to claim 1 or 3, wherein: the insulating material is insulating ceramic, and the conductive material is conductive metal.
5. The reactor of claim 1, wherein: the fuel is one or more than two of four liquid fuels of methanol, ethanol, gasoline and diesel oil.
6. The reactor of claim 1, wherein: the middle part of the lower sealing cover is provided with a material outlet.
7. Use of a reactor according to any of claims 1 to 6, wherein: for plasma reforming of liquid fuels; the specific process is as follows,
1) applying a high-voltage electric field on the high-voltage electrode, and forming a high-electric-field-intensity area between the high-voltage electrode and the lower sealing cover;
2) introducing air (entering from a fuel and air mixture inlet) and fuel, top air (entering from a first air inlet) and wall air (entering from a second air inlet) into the reactor, wherein under the condition of a specific oxygen-carbon ratio, the three paths of air are fed according to the volume ratio of 1:3: 2;
3) the external high voltage power supply is turned on and the plasma fuel reforming process is initiated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911292739.3A CN112960646B (en) | 2019-12-12 | 2019-12-12 | Reactor for preparing synthesis gas by reforming liquid fuel with plasma and application |
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| CN201911292739.3A CN112960646B (en) | 2019-12-12 | 2019-12-12 | Reactor for preparing synthesis gas by reforming liquid fuel with plasma and application |
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| CN112960646B CN112960646B (en) | 2022-11-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768714A (en) * | 2022-04-01 | 2022-07-22 | 安徽华东光电技术研究所有限公司 | Non-thermal arc plasma liquid fuel gasification device and method for improving gasification efficiency |
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| FR2873306A1 (en) * | 2004-07-26 | 2006-01-27 | Physiques Sarl Et Chimiques | Electrical generator, useful for the combustion of a liquid and/or gaseous fuel, comprises a tangential injection of a combustive gas in a chamber of combustive-fuel |
| US20070186472A1 (en) * | 2006-02-14 | 2007-08-16 | Gas Technology Institute | Plasma assisted conversion of carbonaceous materials into synthesis gas |
| CN104071747A (en) * | 2014-07-14 | 2014-10-01 | 大连理工大学 | Method for preparing synthesis gas through methane reforming with plasma |
| RU2013138470A (en) * | 2011-02-18 | 2015-02-27 | Сергей Александрович Вощинин | METHOD AND DEVICE FOR PRODUCING SYNTHESIS GAS |
| CN106765105A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院工程热物理研究所 | Nozzle of a kind of pair of entrance with catalyst, nozzle array and burner |
| CN109896501A (en) * | 2017-12-11 | 2019-06-18 | 中国科学院大连化学物理研究所 | A kind of reforming hydrogen production device and the method using the device hydrogen manufacturing |
-
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- 2019-12-12 CN CN201911292739.3A patent/CN112960646B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2873306A1 (en) * | 2004-07-26 | 2006-01-27 | Physiques Sarl Et Chimiques | Electrical generator, useful for the combustion of a liquid and/or gaseous fuel, comprises a tangential injection of a combustive gas in a chamber of combustive-fuel |
| US20070186472A1 (en) * | 2006-02-14 | 2007-08-16 | Gas Technology Institute | Plasma assisted conversion of carbonaceous materials into synthesis gas |
| RU2013138470A (en) * | 2011-02-18 | 2015-02-27 | Сергей Александрович Вощинин | METHOD AND DEVICE FOR PRODUCING SYNTHESIS GAS |
| CN104071747A (en) * | 2014-07-14 | 2014-10-01 | 大连理工大学 | Method for preparing synthesis gas through methane reforming with plasma |
| CN106765105A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院工程热物理研究所 | Nozzle of a kind of pair of entrance with catalyst, nozzle array and burner |
| CN109896501A (en) * | 2017-12-11 | 2019-06-18 | 中国科学院大连化学物理研究所 | A kind of reforming hydrogen production device and the method using the device hydrogen manufacturing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768714A (en) * | 2022-04-01 | 2022-07-22 | 安徽华东光电技术研究所有限公司 | Non-thermal arc plasma liquid fuel gasification device and method for improving gasification efficiency |
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