CN111137860B - Methane carbon dioxide dry reforming reaction furnace - Google Patents
Methane carbon dioxide dry reforming reaction furnace Download PDFInfo
- Publication number
- CN111137860B CN111137860B CN201911407627.8A CN201911407627A CN111137860B CN 111137860 B CN111137860 B CN 111137860B CN 201911407627 A CN201911407627 A CN 201911407627A CN 111137860 B CN111137860 B CN 111137860B
- Authority
- CN
- China
- Prior art keywords
- chamber
- reaction
- combustion
- preheating
- chambers
- 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.)
- Active
Links
Images
Classifications
-
- 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
- C01B3/32—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
- C01B3/38—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 using catalysts
-
- C—CHEMISTRY; METALLURGY
- 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
- C01B2203/02—Processes for making hydrogen or synthesis gas
- C01B2203/0205—Processes for making hydrogen or synthesis gas containing a reforming step
- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
- C01B2203/0238—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step the reforming step being a carbon dioxide reforming step
-
- C—CHEMISTRY; METALLURGY
- 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
- C01B2203/08—Methods of heating or cooling
- C01B2203/0805—Methods of heating the process for making hydrogen or synthesis gas
- C01B2203/0811—Methods of heating the process for making hydrogen or synthesis gas by combustion of fuel
-
- C—CHEMISTRY; METALLURGY
- 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
- C01B2203/1241—Natural gas or methane
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
Abstract
The invention belongs to the technical field of chemical reaction furnaces, and particularly relates to a methane carbon dioxide dry reforming reaction furnace which solves the problems of excessive methane production and environmental pollution caused by emission of greenhouse gas carbon dioxide. The device comprises a plurality of reaction chambers for dry reforming of methane-carbon dioxide mixed gas, a plurality of combustion chambers, a preheating chamber, a waste gas recovery chamber, a plurality of total gas pipes positioned in the waste gas recovery chamber and a plurality of waste gas pipelines positioned in the waste gas recovery chamber; the reaction chamber and the combustion chamber are arranged in the reaction furnace side by side, the preheating chamber is positioned below the reaction chamber and the combustion chamber, and the waste gas recovery chamber is positioned below the preheating chamber; a plurality of combustion chambers and a plurality of reaction chambers are sequentially arranged in the reaction furnace at intervals, and the combustion chambers are separated from the reaction chambers by partition walls; the preheating chamber comprises a plurality of combustion preheating chambers and a plurality of reaction preheating chambers. The invention reforms methane and carbon dioxide, reduces the discharge amount of greenhouse gas carbon dioxide, improves the utilization of resources and protects the environment.
Description
Technical Field
The invention belongs to the technical field of chemical reaction furnaces, and particularly relates to a methane carbon dioxide dry reforming reaction furnace.
Background
The emission of methane and carbon dioxide greenhouse gases in China is the first in the world, wherein the methane production capacity is surplus, so that the reasonable utilization of methane is necessary, and the preparation of synthesis gas from methane is a very preferred choice among various methods. At present, the synthesis gas prepared from methane has three ways: the method comprises the steps of methane carbon dioxide reforming, methane steam reforming and methane partial oxidation, wherein the ratio of hydrogen to carbon monoxide of a product synthetic gas of methane carbon dioxide dry reforming can be directly used for Fischer-Tropsch synthesis, and chemical products such as long-chain hydrocarbon can be produced. In addition, the reforming reaction is a strong endothermic reaction and can also play a role in energy storage. The dry reforming of the methane and the carbon dioxide not only solves the problem of excess methane productivity, but also can reasonably utilize the carbon dioxide, reduce the emission of greenhouse gases and relieve the greenhouse effect, and has important significance on resource utilization and environmental protection.
Disclosure of Invention
The invention provides a methane and carbon dioxide dry reforming reaction furnace, which aims to solve the problems of excessive methane production and environmental pollution caused by emission of greenhouse gas carbon dioxide.
The invention is realized by adopting the following technical scheme: a methane-carbon dioxide dry reforming reaction furnace comprises a plurality of reaction chambers for dry reforming of methane-carbon dioxide mixed gas, a plurality of combustion chambers, a preheating chamber, a waste gas recovery chamber, a plurality of total gas pipes positioned in the waste gas recovery chamber and a plurality of waste gas pipelines positioned in the waste gas recovery chamber;
the reaction chamber and the combustion chamber are arranged in the reaction furnace side by side, the preheating chamber is positioned below the reaction chamber and the combustion chamber, and the waste gas recovery chamber is positioned below the preheating chamber;
a plurality of combustion chambers and a plurality of reaction chambers are sequentially arranged in the reaction furnace at intervals, and the combustion chambers are separated from the reaction chambers by partition walls; the preheating chambers comprise a plurality of combustion preheating chambers for recovering the heat of the combustion waste gas and a plurality of reaction preheating chambers for preheating the mixed gas, the combustion preheating chambers and the reaction preheating chambers are sequentially arranged in the reaction furnace at intervals, and the combustion preheating chambers and the reaction preheating chambers are separated by partition walls; the combustion preheating chamber is positioned below the combustion chamber and communicated with the combustion chamber, the reaction preheating chamber is positioned below the reaction chamber and communicated with the reaction chamber;
each reaction chamber is symmetrically provided with two side reaction chambers along the direction of the reaction chamber, a synthetic gas outlet pipe for discharging methane and carbon dioxide and reforming the methane and carbon dioxide into synthetic gas under the action of a catalyst is arranged above each side reaction chamber, the two side reaction chambers are divided into a plurality of catalytic reaction chambers by partition walls, and the catalytic reaction chambers are internally provided with catalysts for dry reforming the methane and the carbon dioxide; each corresponding reaction preheating chamber is symmetrically provided with two side reaction preheating chambers along the direction of the reaction preheating chamber, each side reaction preheating chamber is of a rectangular structure, a mixed gas inlet pipe for inputting mixed gas is arranged below each side reaction preheating chamber, and a plurality of communicating pipes for preheating the mixed gas are arranged in the positions, corresponding to the catalytic reaction chambers, in each side reaction preheating chamber; the mixed gas inlet pipe is communicated with the bottom of the communicating pipe, the top of the communicating pipe is communicated with the bottom of the catalytic reaction chamber, and the top of the catalytic reaction chamber is communicated with the synthetic gas outlet pipe;
each combustion chamber is provided with a plurality of groups of duplex type flame paths along the trend, the plurality of groups of duplex type flame paths are separated by partition walls, each group of duplex type flame paths comprises two flame paths, the two flame paths are separated by partition walls, the top of the partition wall between the two flame paths is provided with a communicating pore passage for communicating the two flame paths, the bottom of each flame path is provided with an ignition end, and a control valve for controlling the ignition end to be opened or closed is arranged in each ignition end;
the combustion preheating chambers are divided into a plurality of combustion preheating chambers by partition walls, and the combustion preheating chambers are correspondingly positioned below the flame paths of the combustion chambers; the combustion preheating cavity comprises two air vents for inputting air or discharging combustion waste gas and a single gas pipe for inputting gas, the single gas pipe is positioned between the two air vents, and the two air vents and the single gas pipe are respectively separated by partition walls;
the plurality of main gas pipes are respectively and correspondingly positioned below the plurality of combustion preheating chambers;
the top end of the single gas pipe is communicated with the ignition end of a flame path of the combustion chamber, and the bottom end of the single gas pipe is communicated with the main gas pipe;
the plurality of waste gas pipelines are respectively and correspondingly positioned below the plurality of combustion preheating chambers;
the top parts of the two vent holes are communicated with the bottom of the flame path, and the top parts of the two vent holes are provided with control valves for controlling the opening or closing of the communication between the vent holes and the flame path;
the bottoms of the two vent holes are communicated with the waste gas pipeline through a pipeline, and a control valve for controlling the communication between the vent holes and the waste gas pipeline to be opened or closed is arranged on the pipeline;
an air input pipe is arranged on one side of the vent hole, the vent hole is communicated with the air input pipe through a pipeline, and a control valve for controlling the communication between the vent hole and the air input pipe to be opened or closed is arranged on the pipeline;
the waste gas recovery chamber is arranged in the basement, the waste gas recovery chamber is positioned below the preheating chamber, a plurality of waste gas channels used for collecting waste gas after heat recovery through the preheating chamber are further arranged in the waste gas recovery chamber, the tail ends of the waste gas channels are communicated with the waste gas channels, and the tail ends of the waste gas channels are communicated with the chimney.
The communicating pipe is provided with a plurality of spherical pipes.
The inlets of the main gas pipe and the air input pipe are respectively provided with an adjustable flow pump for regulating and controlling the gas flow, and the control end of the adjustable flow pump is externally connected with a computer; the fire channels are internally provided with temperature sensors, and the control ends of the temperature sensors are externally connected with a computer.
The inlet of the mixed gas inlet pipe is provided with an adjustable flow pump for regulating the flow of the mixed gas, and the control end of the adjustable flow pump is externally connected with a computer.
The control ends of the control valves are externally connected with a computer.
The top of the flame path of the combustion preheating chamber is provided with a viewing hole for observation and temperature measurement, and the viewing hole extends out of the top of the reaction furnace.
The flame path in the combustion chamber can also be a two-split vertical flame path, a four-split vertical flame path, a cross-top vertical flame path or a four-linked flame path.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention reforms methane and carbon dioxide by reasonably utilizing resources, reduces the emission of greenhouse gas carbon dioxide, improves the utilization of resources and protects the environment;
2. the structure is simple, and the operation is convenient;
3. the heat of the waste gas generated by combustion is fully recovered and utilized to preheat the methane and carbon dioxide mixed gas before dry reforming reaction of the methane and carbon dioxide on one hand and preheat the coal gas and air before combustion on the other hand, so that the energy is saved, the consumption is reduced, the cost is reduced, and the economic benefit is improved;
4. the flow of the mixed gas of methane and carbon dioxide is controlled by a computer, the reaction time is controlled, the catalytic reaction is fully completed, the catalytic reaction quality is ensured, and the production capacity is maximized; the catalytic reaction of the reaction chamber is accurately controlled, and the automatic production is facilitated;
5. the computer controls the mixing proportion of the coal gas and the air by conducting the real-time temperature to the computer through the temperature sensor, thereby further controlling the fire behavior and the temperature, accurately controlling the combustion of the combustion chamber and facilitating the automatic production.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of a horizontal structure of the present invention;
FIG. 3 isbase:Sub>A schematic view A-A of the reaction chamber according to the present invention;
FIG. 4 is a schematic view B-B of the combustion chamber of the present invention;
FIG. 5 is a cross-sectional view C-C of the present invention;
FIG. 6 is a schematic view of a duplex flue structure according to the present invention;
FIG. 7 is a schematic diagram of the twin-type flame path of the present invention;
FIG. 8 is a schematic view of the principle of the two-part vertical flue of the present invention;
FIG. 9 is a schematic diagram of the four-part vertical flue of the present invention;
FIG. 10 is a schematic view of the principle of the present invention of a cross-top type vertical flue;
FIG. 11 is a schematic diagram of the quadruple flue of the present invention;
FIG. 12 is a schematic illustration of a combustion cycle of the present invention;
FIG. 13 is a schematic illustration of the next combustion cycle of the present invention;
in the figure: 1-syngas outlet pipe
2-reaction chamber, 2.1-side reaction chamber, 2.1.1-catalytic reaction chamber
3-air inlet pipe
4-preheating chamber, 4.1-combustion preheating chamber, 4.1.1-combustion preheating chamber, 4.2-reaction preheating chamber, 4.2.1-side reaction preheating chamber
5-communicating pipe
6-mixed gas inlet pipe
7-total gas pipe
8-waste gas recovery Chamber, 8.1-waste gas chimney
9-observation hole
10-combustion chamber
11-duplex flame path, 11.1-flame path, 11.1.1-ignition end
12-communicating pore canal
13-Vent hole
14-exhaust gas line
15-single gas pipe.
Detailed Description
The embodiments of the invention will be further explained with reference to the accompanying drawings:
referring to fig. 1 to 6, the present invention provides a methane-carbon dioxide dry reforming reaction furnace, which comprises a plurality of reaction chambers 2 for dry reforming of methane-carbon dioxide mixed gas, a plurality of combustion chambers 10, a preheating chamber 4, a waste gas recovery chamber 8, a plurality of total gas pipes 7 located in the waste gas recovery chamber 8, and a plurality of waste gas pipes 14 located in the waste gas recovery chamber 8;
the reaction chamber 2 and the combustion chamber 10 are arranged in the reaction furnace side by side, the preheating chamber 4 is positioned below the reaction chamber 2 and the combustion chamber 10, and the waste gas recovery chamber is positioned below the preheating chamber 4;
a plurality of combustion chambers 10 and a plurality of reaction chambers 2 are sequentially arranged in the reaction furnace at intervals, and the combustion chambers 10 and the reaction chambers 2 are separated by partition walls; the preheating chamber 4 comprises a plurality of combustion preheating chambers 4.1 for recovering heat of combustion waste gas and a plurality of reaction preheating chambers 4.2 for preheating mixed gas, the combustion preheating chambers 4.1 and the reaction preheating chambers 4.2 are sequentially arranged in the reaction furnace at intervals, and the combustion preheating chambers 4.1 and the reaction preheating chambers 4.2 are separated by partition walls; the combustion preheating chamber 4.1 is positioned below the combustion chamber 10, the combustion preheating chamber 4.1 is communicated with the combustion chamber 10, the reaction preheating chamber 4.2 is positioned below the reaction chamber 2, and the reaction preheating chamber 4.2 is communicated with the reaction chamber 2;
each reaction chamber 2 is symmetrically provided with two side reaction chambers 2.1 along the direction, a synthesis gas outlet pipe 1 for discharging methane and carbon dioxide and reforming the methane and carbon dioxide into synthesis gas under the action of a catalyst is arranged above each side reaction chamber 2.1, the two side reaction chambers 2.1 are internally divided into a plurality of catalytic reaction cavities 2.1.1 by partition walls, and the catalytic reaction cavities 2.1.1 are internally provided with catalysts for dry reforming of methane and carbon dioxide; each corresponding reaction preheating chamber 4.2 is symmetrically provided with two side reaction preheating chambers 4.2.1 along the direction of the reaction preheating chamber, the side reaction preheating chambers 4.2.1 are rectangular structures, a mixed gas inlet pipe 6 for inputting mixed gas is arranged below each of the two side reaction preheating chambers 4.2.1, and a plurality of communicating pipes 5 for preheating the mixed gas are arranged in the positions corresponding to the catalytic reaction chambers 2.1.1 in the two side reaction preheating chambers 4.2.1; the mixed gas inlet pipe 6 is communicated with the bottom of the communicating pipe 5, the top of the communicating pipe 5 is communicated with the bottom of the catalytic reaction chamber 2.1.1, and the top of the catalytic reaction chamber 2.1.1 is communicated with the synthetic gas outlet pipe 1;
each combustion chamber 10 is provided with a plurality of groups of duplex type flame paths 11 along the trend, the plurality of groups of duplex type flame paths 11 are separated by a partition wall, each group of duplex type flame paths 11 comprises two flame paths 11.1, the two flame paths 11.1 are separated by the partition wall, a communicating pore passage 12 for communicating the two flame paths 11.1 is arranged at the top of the partition wall between the two flame paths 11.1, the bottom of the flame path 11.1 is provided with an ignition end 11.1.1, and a control valve for controlling the ignition end to be opened or closed is arranged in the ignition end 11.1.1;
the combustion preheating chambers 4.1 are divided into a plurality of combustion preheating cavities 4.1.1 by partition walls, and the combustion preheating cavities 4.1.1 are correspondingly positioned below the flame paths 11.1 of the combustion chambers 10; the combustion preheating cavity 4.1.1 comprises two air vents 13 for inputting air or discharging combustion waste gas and a single gas pipe 15 for inputting gas, wherein the single gas pipe 15 is positioned between the two air vents 13, and the two air vents 13 and the single gas pipe 15 are respectively separated by partition walls;
the plurality of total gas pipes 7 are respectively and correspondingly positioned below the plurality of combustion preheating chambers 4.1;
the top end of the single gas pipe 15 is communicated with an ignition end 4.1.2 of a flame path 11.1 of the combustion chamber 10, and the bottom end of the single gas pipe 15 is communicated with a main gas pipe 7;
the waste gas pipelines 14 are respectively and correspondingly positioned below the combustion preheating chambers 4.1;
the tops of the two vent holes 13 are communicated with the bottom of the flame path 11.1, and the tops of the two vent holes 13 are provided with control valves for controlling the opening or closing of the communication between the vent holes 13 and the flame path 11.1;
the bottoms of the two vent holes 13 are communicated with a waste gas pipeline 14 through a pipeline, and a control valve for controlling the opening or closing of the communication between the vent holes 13 and the waste gas pipeline 14 is arranged on the pipeline;
an air input pipe 3 is arranged on one side of the vent hole 13, the vent hole 13 is communicated with the air input pipe 3 through a pipeline, and a control valve for controlling the communication between the vent hole 13 and the air input pipe 3 to be opened or closed is arranged on the pipeline;
the waste gas recovery chamber 8 is arranged in a basement, the waste gas recovery chamber 8 is positioned below the preheating chamber 4, a plurality of waste gas channels 8.1 used for collecting waste gas after heat recovery through the preheating chamber 4 are further arranged in the waste gas recovery chamber 8, the tail ends of the waste gas channels 14 are communicated with the waste gas channels 8.1, and the tail ends of the waste gas channels 8.1 are communicated with a chimney and are discharged after being treated in the chimney and reaching the discharge standard.
The communicating pipe 5 is provided with a plurality of spherical pipes, so that the area of a contact surface for heat transfer can be increased, the flow velocity of mixed gas in the communicating pipe 5 can be reduced, the heat transfer time is prolonged, and the heat transfer effect is improved.
The inlets of the main gas pipe 7 and the air input pipe 3 are respectively provided with an adjustable flow pump for regulating and controlling the gas flow, the control end of the adjustable flow pump is externally connected with a computer, and the computer can regulate and control the adjustable flow pumps at the inlet of the main gas pipe 7 and the inlet of the air input pipe 3, so that the flow of gas and air can be regulated and controlled; temperature sensors are arranged in the flame paths 11.1, the control ends of the temperature sensors are externally connected with a computer, and the temperature sensors react the real-time temperature in the flame paths 11.1 on the computer; the computer regulates and controls the flow rate of the gas and the air (namely the mixing ratio of the gas and the air) according to the real-time temperature value of the reaction of the temperature sensor, so that the combustion degree in the combustion chamber is controlled to achieve the aim of controlling the temperature; computer control is convenient for automatic production.
The inlet of the mixed gas inlet pipe 6 is provided with an adjustable flow pump for regulating the flow of the mixed gas, the control end of the adjustable flow pump is externally connected with a computer, and the computer can control and regulate the flow of the mixed gas; the design flow of the mixed gas is converted according to the volume of the catalytic reaction cavity 2.1.1, the flow value of the mixed gas entering the inlet of the pipeline 6 is controlled by a computer in the automatic production process to accord with the design flow, the reaction is incomplete when the flow is too large, the product concentration is too low, the production efficiency is reduced when the flow is too low, and resources are wasted; the computer control is convenient for automatic production, and the maximization of the production efficiency is also ensured.
And control ends of the control valves are all externally connected with a computer, so that the automatic production is facilitated.
The top of a flame path 11.1 of the combustion preheating chamber 4.1 is provided with a fire observation hole 9 for observation and temperature measurement, and the fire observation hole 9 extends out of the top of the reaction furnace, so that the inspection of field inspectors is facilitated.
The flame path in the combustion chamber 10 is a two-split vertical flame path, a four-split vertical flame path, a cross-top vertical flame path or a four-linked flame path, and the schematic diagrams of the two-split vertical flame path, the four-split vertical flame path, the cross-top vertical flame path and the four-linked flame are shown in fig. 8-11.
The catalyst in the reaction chamber can be prepared by taking a carbon material as a carrier to load active metal, wherein the carbon material is subcritical H 2 The carbon material is generated by modifying lignite with H2 generated by O-CO reaction, wherein the carbon material accounts for 80-98wt%, the cobalt active component accounts for 1-12wt%, and the iron active component accounts for 1-8wt%; the catalyst can also adopt a nickel-based catalyst, the nickel-based catalyst comprises 5-20% of nickel oxide and 0.2-0.70% of molybdenum oxide by mass, and cerium dioxide and zirconium dioxide account for 1-15% of the total mass of the nickel-based catalyst.
The model of the temperature sensor is TR02016.
The working principle of the invention is as follows:
preheating methane and carbon dioxide mixed gas:
when the combustion waste gas of the combustion chamber passes through the vent hole 13 of the combustion preheating chamber, the heat of the waste gas is conducted to a partition wall between the combustion preheating chamber and the reaction preheating chamber at the side of the vent hole 13, so that the partition wall conducts the heat to the methane-carbon dioxide mixed gas in the communicating pipe 5 of the reaction preheating chamber 4.2 for preheating; the mixed gas enters a reaction chamber for catalytic reaction after being preheated, and the synthesis gas after the catalytic reaction passes through a synthesis gas outlet pipe 1;
preheating coal gas and air:
one flame path of a duplex flame path 11 of the combustion chamber 10 is a first flame path, the other flame path is a second flame path, two vent holes 13 of the first flame path are controlled by a computer to be communicated with the air input pipe 3, and a single gas pipe 15 is communicated with a main gas pipe 7, so that the first flame path is combusted; the computer controls two vent holes 13 at the bottom of the second flame path to be communicated with a waste gas pipeline 14, and a single gas pipe 15 is not communicated with a total gas pipe 7, so that the second flame path discharges waste gas;
one combustion cycle (first flame path combustion, second flame path exhaust, as shown in fig. 12): the first flame path ignites the mixed gas of coal gas and air to complete combustion, the combusted waste gas is discharged from the communicating pore passage 12 to the second flame path and is discharged from the vent hole 13 of the combustion preheating chamber 4.1 at the bottom of the second flame path, and the waste gas in the vent hole 13 transfers the heat of the waste gas to the partition wall beside the vent hole, so that the partition wall is heated;
the next combustion cycle (second flame, first flame, exhaust, as shown in fig. 13): the air and the coal gas used for combustion in the second flame path of the combustion period are preheated through the partition wall heated in the previous combustion period, the preheated coal gas and the air are ignited in the second flame path to finish combustion, and the combusted waste gas is discharged to the first flame path from the communicating pore passage 12 and is discharged from the vent hole 13 of the first flame path;
the circulation is carried out, and the air and the coal gas in each combustion period are preheated.
The invention reforms methane and carbon dioxide by reasonably utilizing resources, reduces the emission of greenhouse gas carbon dioxide, improves the utilization of resources and protects the environment; the structure is simple, and the operation is convenient; the heat of the waste gas generated by combustion is fully recovered and utilized to preheat the methane and carbon dioxide mixed gas before dry reforming reaction of the methane and carbon dioxide on one hand and preheat the coal gas and air before combustion on the other hand, so that the energy is saved, the consumption is reduced, the cost is reduced, and the economic benefit is improved; the flow of the mixed gas of methane and carbon dioxide is controlled by a computer, the reaction time is controlled, the catalytic reaction is fully completed, the catalytic reaction quality is ensured, and the production capacity is maximized; the catalytic reaction of the reaction chamber is accurately controlled, so that the automatic production is facilitated; the computer controls the mixing proportion of the coal gas and the air by conducting the real-time temperature to the computer through the temperature sensor, thereby further controlling the fire behavior and the temperature, accurately controlling the combustion of the combustion chamber and facilitating the automatic production.
Claims (7)
1. A methane carbon dioxide dry reforming reaction furnace is characterized in that: the device comprises a plurality of reaction chambers (2) for dry reforming of methane-carbon dioxide mixed gas, a plurality of combustion chambers (10), a preheating chamber (4), a waste gas recovery chamber (8), a plurality of total gas pipes (7) positioned in the waste gas recovery chamber (8) and a plurality of waste gas pipelines (14) positioned in the waste gas recovery chamber (8);
the reaction chamber (2) and the combustion chamber (10) are arranged in the reaction furnace side by side, the preheating chamber (4) is positioned below the reaction chamber (2) and the combustion chamber (10), and the waste gas recovery chamber is positioned below the preheating chamber (4);
a plurality of combustion chambers (10) and a plurality of reaction chambers (2) are sequentially arranged in the reaction furnace at intervals, and the combustion chambers (10) are separated from the reaction chambers (2) by partition walls; the preheating chamber (4) comprises a plurality of combustion preheating chambers (4.1) for recovering heat of combustion waste gas and a plurality of reaction preheating chambers (4.2) for preheating mixed gas, the combustion preheating chambers (4.1) and the reaction preheating chambers (4.2) are sequentially arranged in the reaction furnace at intervals, and the combustion preheating chambers (4.1) and the reaction preheating chambers (4.2) are separated by partition walls; the combustion preheating chamber (4.1) is positioned below the combustion chamber (10), the combustion preheating chamber (4.1) is communicated with the combustion chamber (10), the reaction preheating chamber (4.2) is positioned below the reaction chamber (2), and the reaction preheating chamber (4.2) is communicated with the reaction chamber (2);
each reaction chamber (2) is symmetrically provided with two side reaction chambers (2.1) along the direction of the reaction chamber, a synthesis gas outlet pipe (1) for discharging methane and carbon dioxide and reforming the methane and carbon dioxide into synthesis gas under the action of a catalyst is arranged above each side reaction chamber (2.1), the two side reaction chambers (2.1) are internally divided into a plurality of catalytic reaction cavities (2.1.1) through partition walls, and the catalytic reaction cavities (2.1.1) are internally provided with catalysts for dry reforming of methane and carbon dioxide; each corresponding reaction preheating chamber (4.2) is symmetrically provided with two side reaction preheating chambers (4.2.1) along the direction of the reaction preheating chamber, the side reaction preheating chambers (4.2.1) are of a rectangular structure, a mixed gas inlet pipe (6) for inputting mixed gas is arranged below each side reaction preheating chamber (4.2.1), and a plurality of communicating pipes (5) for preheating the mixed gas are arranged in the positions, corresponding to the catalytic reaction chambers (2.1.1), in each side reaction preheating chamber (4.2.1); the mixed gas inlet pipe (6) is communicated with the bottom of the communicating pipe (5), the top of the communicating pipe (5) is communicated with the bottom of the catalytic reaction cavity (2.1.1), and the top of the catalytic reaction cavity (2.1.1) is communicated with the synthetic gas outlet pipe (1);
each combustion chamber (10) is provided with a plurality of groups of duplex type flame paths (11) along the trend, the plurality of groups of duplex type flame paths (11) are separated by a partition wall, each group of duplex type flame paths (11) comprises two flame paths (11.1), the two flame paths (11.1) are separated by the partition wall, the top of the partition wall between the two flame paths (11.1) is provided with a communicating pore passage (12) for communicating the two flame paths (11.1), the bottom of the flame path (11.1) is provided with an ignition end (11.1.1), and a control valve for controlling the ignition end to be opened or closed is arranged in the ignition end (11.1.1);
the combustion preheating chambers (4.1) are divided into a plurality of combustion preheating cavities (4.1.1) by partition walls, and the combustion preheating cavities (4.1.1) are correspondingly positioned below flame paths (11.1) of the combustion chambers (10); the combustion preheating cavity (4.1.1) comprises two air vents (13) for inputting air or discharging combustion waste gas and a single gas pipe (15) for inputting gas, the single gas pipe (15) is positioned between the two air vents (13), and the two air vents (13) and the single gas pipe (15) are respectively separated by partition walls;
the plurality of total gas pipes (7) are respectively and correspondingly positioned below the plurality of combustion preheating chambers (4.1);
the top end of the single gas pipe (15) is communicated with the ignition end of a flame path (11.1) of the combustion chamber (10), and the bottom end of the single gas pipe (15) is communicated with the main gas pipe (7);
the waste gas pipelines (14) are respectively and correspondingly positioned below the combustion preheating chambers (4.1);
the tops of the two vent holes (13) are communicated with the bottom of the flame path (11.1), and the tops of the two vent holes (13) are provided with control valves for controlling the communication between the vent holes (13) and the flame path (11.1) to be opened or closed;
the bottoms of the two vent holes (13) are communicated with an exhaust gas pipeline (14) through a pipeline, and a control valve for controlling the communication between the vent holes (13) and the exhaust gas pipeline (14) to be opened or closed is arranged on the pipeline;
an air input pipe (3) is arranged on one side of the vent hole (13), the vent hole (13) is communicated with the air input pipe (3) through a pipeline, and a control valve for controlling the communication between the vent hole (13) and the air input pipe (3) to be opened or closed is arranged on the pipeline;
the waste gas recovery chamber (8) is arranged in the basement, the waste gas recovery chamber (8) is positioned below the preheating chamber (4), a plurality of waste gas channels (8.1) used for collecting waste gas after heat recovery through the preheating chamber (4) are further arranged in the waste gas recovery chamber (8), the tail end of the waste gas pipeline (14) is communicated with the waste gas channels (8.1), and the tail end of the waste gas channel (8.1) is communicated with the chimney.
2. A methane carbon dioxide dry reforming reaction furnace according to claim 1, characterized in that: the communicating pipe (5) is provided with a plurality of spherical pipes.
3. A methane and carbon dioxide dry reforming reactor according to claim 2, characterized in that: the inlets of the main gas pipe (7) and the air input pipe (3) are respectively provided with an adjustable flow pump for regulating and controlling the gas flow, and the control end of the adjustable flow pump is externally connected with a computer; temperature sensors are arranged in the flame paths (11.1), and the control ends of the temperature sensors are externally connected with a computer.
4. A methane and carbon dioxide dry reforming reactor according to claim 3, characterized in that: the inlet of the mixed gas inlet pipe (6) is provided with an adjustable flow pump for regulating and controlling the flow of the mixed gas, and the control end of the adjustable flow pump is externally connected with a computer.
5. A methane and carbon dioxide dry reforming reaction furnace according to claim 4, characterized in that: the control ends of the control valves are externally connected with a computer.
6. A methane and carbon dioxide dry reforming reaction furnace according to any one of claims 1 to 5, characterized in that: the top of a flame path (11.1) of the combustion preheating chamber (4.1) is provided with a fire observation hole (9) for observing and measuring temperature, and the fire observation hole (9) extends out of the top of the reaction furnace.
7. A methane and carbon dioxide dry reforming reaction furnace according to claim 6, characterized in that: the flame path in the combustion chamber (10) can also be a two-split vertical flame path, a four-split vertical flame path, a cross-top vertical flame path or a four-combined flame path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911407627.8A CN111137860B (en) | 2019-12-31 | 2019-12-31 | Methane carbon dioxide dry reforming reaction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911407627.8A CN111137860B (en) | 2019-12-31 | 2019-12-31 | Methane carbon dioxide dry reforming reaction furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111137860A CN111137860A (en) | 2020-05-12 |
| CN111137860B true CN111137860B (en) | 2023-03-10 |
Family
ID=70522398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911407627.8A Active CN111137860B (en) | 2019-12-31 | 2019-12-31 | Methane carbon dioxide dry reforming reaction furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111137860B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062615A (en) * | 1992-06-19 | 1994-01-11 | Aqueous Res:Kk | Engine combustion system utilizing carbon dioxide |
| CN203159209U (en) * | 2013-01-17 | 2013-08-28 | 上海中科高等研究院 | Carbon dioxide-methane self-heating reforming reactor |
| CN103820132A (en) * | 2014-03-11 | 2014-05-28 | 太原理工大学 | Coking furnace and application method thereof |
| CN103920439A (en) * | 2002-08-15 | 2014-07-16 | 维罗西股份有限公司 | Integrated combustion reactors and methods of conducting simultaneous endothermic and exothermic reactions |
| CN108034436A (en) * | 2017-12-05 | 2018-05-15 | 太原理工大学 | A kind of coke furnace system and its application |
| CN109502546A (en) * | 2018-10-29 | 2019-03-22 | 山西潞安煤基合成油有限公司 | Methane and carbon dioxide dry reforming reactor |
-
2019
- 2019-12-31 CN CN201911407627.8A patent/CN111137860B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062615A (en) * | 1992-06-19 | 1994-01-11 | Aqueous Res:Kk | Engine combustion system utilizing carbon dioxide |
| CN103920439A (en) * | 2002-08-15 | 2014-07-16 | 维罗西股份有限公司 | Integrated combustion reactors and methods of conducting simultaneous endothermic and exothermic reactions |
| CN203159209U (en) * | 2013-01-17 | 2013-08-28 | 上海中科高等研究院 | Carbon dioxide-methane self-heating reforming reactor |
| WO2014111315A1 (en) * | 2013-01-17 | 2014-07-24 | Shell Internationale Research Maatschappij B.V. | Auto-thermal reforming reactor |
| CN103820132A (en) * | 2014-03-11 | 2014-05-28 | 太原理工大学 | Coking furnace and application method thereof |
| CN108034436A (en) * | 2017-12-05 | 2018-05-15 | 太原理工大学 | A kind of coke furnace system and its application |
| CN109502546A (en) * | 2018-10-29 | 2019-03-22 | 山西潞安煤基合成油有限公司 | Methane and carbon dioxide dry reforming reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111137860A (en) | 2020-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110316703A (en) | A kind of self-heating preparing hydrogen by reforming methanol reaction system | |
| CN103911179B (en) | Coal gasification method and device | |
| CN101629108B (en) | Method for preparing coal gas through gasification of pulverized coal | |
| CN105299652B (en) | Emission coal gas utilizes system and method | |
| CN101855165A (en) | Circulating fluidized-bed reformer | |
| CN106590761A (en) | Fluidized bed reaction device and reaction method for coal catalytic gasification for producing methane-rich synthetic gas | |
| CN201241071Y (en) | Single-bed self-heating type thermal decomposition gasification combusting reactor | |
| CN105925329B (en) | CO is realized in a kind of distributing-supplying-energy system2The method and its system of zero-emission | |
| CN110643382A (en) | Biomass oil-gas co-production device and method based on chemical chain | |
| CN103509605B (en) | Method and device using high temperature air and high temperature steam as gasification agents for coal gas production | |
| CN111137860B (en) | Methane carbon dioxide dry reforming reaction furnace | |
| CN101735872A (en) | Non-steady state reactor and method for producing synthesis gas | |
| CN102230393B (en) | Gas intake, exhaust and flow guide device of coal mine ventilation air methane preheating catalytic oxidizer | |
| CN203307054U (en) | Device for producing calcium carbides by adopting oxygen heat method | |
| CN100412173C (en) | Process for pretreatment of coke oven gas and partial oxidation preparation of synthetic raw gas | |
| CN201852446U (en) | Flexibly adjusted energy-saving type four-in-one reformed heating furnace | |
| CN210340323U (en) | Self-heating methanol reforming hydrogen production reaction system | |
| CN108018088A (en) | A kind of method of catalytic coal gasifaction | |
| CN110319574A (en) | A kind of gas-fired Boiler System and its operation method | |
| CN206767645U (en) | For producing the reformer of forming gas | |
| CN103693616B (en) | The method and system of methane non-catalytic partial oxidation and methane steam reforming co-production synthesis gas | |
| CN208394781U (en) | Reforming reactor in vapor reforming hydrogen production device | |
| CN208684403U (en) | A kind of partial oxidation produces the device of suitable hydrogen-carbon ratio synthesis gas | |
| CN108916866B (en) | Sleeve type multi-fuel circulating-bubbling combined fluidized bed boiler | |
| CN202849353U (en) | Device for producing blau gas and carbon monoxide |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |