CN109181800A - The coupling device and Methane decarbonization reforming system of Methane decarbonization and methane reforming - Google Patents
The coupling device and Methane decarbonization reforming system of Methane decarbonization and methane reforming Download PDFInfo
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- CN109181800A CN109181800A CN201811231279.9A CN201811231279A CN109181800A CN 109181800 A CN109181800 A CN 109181800A CN 201811231279 A CN201811231279 A CN 201811231279A CN 109181800 A CN109181800 A CN 109181800A
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- methane
- decarbonization
- reforming
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- heat
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 165
- 238000005262 decarbonization Methods 0.000 title claims abstract description 69
- 238000002407 reforming Methods 0.000 title claims abstract description 66
- 230000008878 coupling Effects 0.000 title claims abstract description 23
- 238000010168 coupling process Methods 0.000 title claims abstract description 23
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000012546 transfer Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims description 7
- 239000000292 calcium oxide Substances 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical group [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 4
- QUWBSOKSBWAQER-UHFFFAOYSA-N [C].O=C=O Chemical compound [C].O=C=O QUWBSOKSBWAQER-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000008676 import Effects 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 9
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 7
- 238000005261 decarburization Methods 0.000 abstract description 6
- 239000001569 carbon dioxide Substances 0.000 abstract description 3
- 239000000567 combustion gas Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- 238000006057 reforming reaction Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/104—Carbon dioxide
-
- 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
-
- 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
-
- 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
- C01B2203/14—Details of the flowsheet
- C01B2203/146—At least two purification steps in series
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
The present invention relates to combustion gas technical field of decarburization, specifically disclose the coupling device and Methane decarbonization reforming system of a kind of Methane decarbonization and methane reforming, and the coupling device of Methane decarbonization and methane reforming includes: storing section, and storing section is for storing biogas and vapor；Decarbonization section, the decarbonization section being connected to storing section are used to store the decarburizer of removing carbon dioxide；Preliminary heating zone, preliminary heating zone are coated on the outside of storing section and decarbonization section；Transfer section, the transfer section being connected to decarbonization section are used to store the methane and vapor come from decarbonization section；Reforming sections, reforming sections include reaction channel and heat donor passage, and for being connected to the high-temperature exhaust air mouth of SOFC, the heat outlet of heat donor passage is connected to the hot air intake of preliminary heating zone for the hot air intake of heat donor passage.The present invention provides the coupling device and Methane decarbonization reforming system of a kind of Methane decarbonization and methane reforming, can make full use of the heat in SOFC high-temperature exhaust air, achieve the purpose that economical and energy saving.
Description
Technical field
The present invention relates to the coupling device of combustion gas technical field of decarburization more particularly to a kind of Methane decarbonization and methane reforming and
Methane decarbonization reforming system.
Background technique
Biogas is to be rich in CH by one kind that anaerobic fermentation is prepared by organic substances such as biomass4Gas.Due to
China's biomass resource is abundant, and China's natural gas situation in short supply can be alleviated with high degree by being made as biogas.Natural pond
CH in gas4It can be not only used for combustion heat supplying and reaction power generation, can also be used as industrial chemicals and CO and H are made after reforming process2
Synthesis gas, synthesis gas have a variety of chemical industry purposes.
Due to CO in biogas2Content is up to 40% or so, therefore biogas is needing to carry out carbonization treatment before.At present
The decarbonization method used has group more, but is required to biggish heat and supports, and then limit development and the biogas of Methane decarbonization
The utilization of resource.
Solid oxide fuel cell (Solid Oxide Fuel Cell, abbreviation SOFC) is a kind of efficient generating apparatus,
Have the characteristics that running temperature high (600 DEG C~1000 DEG C) and fuel availability height (90%), efficiency power generation while can produce
The exhaust of raw high temperature, generally, the exhaust of high temperature can lead to the waste of energy by direct emission.
Therefore, it is necessary to a kind of devices, can make full use of the heat in SOFC high-temperature exhaust air, to reach the mesh of economical and energy saving
's.
Summary of the invention
It is an advantage of the invention to provide the coupling devices of a kind of Methane decarbonization and methane reforming, can be sufficiently sharp
With the heat in SOFC high-temperature exhaust air, achieve the purpose that economical and energy saving.
It is a further object of the invention to provide a kind of Methane decarbonization reforming systems, can make full use of SOFC high temperature
Heat in exhaust, achievees the purpose that economical and energy saving.
To achieve these objectives, on the one hand, the present invention provides the coupling device of a kind of Methane decarbonization and methane reforming, comprising:
Storing section, the storing section is for storing biogas and vapor；
Decarbonization section, the decarbonization section being connected to the storing section are used to store the decarburizer of removing carbon dioxide；
Preliminary heating zone, the preliminary heating zone are coated on the outside of the storing section and decarbonization section；
Transfer section, the transfer section being connected to the decarbonization section are used to store the methane and vapor come from decarbonization section；
Reforming sections, the reforming sections include:
Reaction channel, the upper end of the reaction channel are connected to the transfer section, the lower end of the reaction channel with it is described
The exterior space of reforming sections is connected to；The reaction channel is for catalyst needed for storing reforming reaction；
Heat donor passage, the reaction channel be located in the heat donor passage and the reaction channel and the heat donor passage not
Connection；The hot air intake of the heat donor passage with the high-temperature exhaust air mouth of SOFC for being connected to, the heat outlet of the heat donor passage
It is connected to the hot air intake of the preliminary heating zone.
Preferably, the decarburizer is calcium oxide.
Preferably, the radius of the one end of the transfer section close to decarbonization section is less than the transfer section close to one end of reforming sections
Radius.
Preferably, the reforming sections are in shell-and-tube heat exchanger structure, and the tube side space of the shell-and-tube heat exchanger structure is
The reaction channel, the shell side space of the shell-and-tube heat exchanger structure are the heat donor passage.
Preferably, heat-storing material is filled in the heat donor passage.
Preferably, heat-storing material is filled in the preliminary heating zone.
On the other hand, the present invention also provides a kind of Methane decarbonization reforming systems, including any of the above-described kind of Methane decarbonization and first
The coupling device that alkane is reformed, further includes:
Vapor supply unit, the steam outlet of a vapor supply unit and the water of the storing section
Steam-gas inlet connection, the hot air intake of a vapor supply unit are connected to the heat outlet of the preliminary heating zone；
Secondary vapor supply unit, the steam outlet of the secondary vapor supply unit and the water of the transfer section
Steam-gas inlet connection, the hot air intake of the secondary vapor supply unit are connected to the heat outlet of a vapor；
Marsh gas purifying unit, the biogas inlet communication of the methane outlet of the marsh gas purifying unit and the storing section, institute
The hot air intake for stating marsh gas purifying unit is connected to the heat outlet of the secondary vapor supply unit.
Preferably, the heat outlet of the reforming sections by triple valve respectively with the hot air intake of the preliminary heating zone and one
The hot air intake of secondary vapor supply unit is connected to.
The beneficial effects of the present invention are: the coupling device and Methane decarbonization weight of a kind of Methane decarbonization and methane reforming are provided
Whole system, it is by combining the required reaction condition of Methane decarbonization and reforming process, the heat in SOFC high-temperature exhaust air is efficient
Ground is distributed into decarburizing reaction and reforming reaction, to realize that the multiple degradation of energy in SOFC high-temperature exhaust air utilizes.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of the coupling device of Methane decarbonization provided in an embodiment of the present invention and methane reforming；
Fig. 2 is the workflow schematic diagram of startup stage Methane decarbonization reforming system；
Fig. 3 is the workflow schematic diagram of stable operation stage Methane decarbonization reforming system.
In figure:
1, coupling device；101, storing section；102, decarbonization section；103, preliminary heating zone；104, transfer section；105, reforming sections；
1051, reaction channel；1052, heat donor passage；
2, a vapor supply unit；
3, secondary vapor supply unit；
4, marsh gas purifying unit.
Specific embodiment
To enable the purpose of the present invention, feature, advantage more obvious and understandable, implement below in conjunction with the present invention
Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that reality disclosed below
Applying example is only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it is to be understood that, when a component is considered as " connection " another component, it can
To be directly to another component or may be simultaneously present the component being centrally located.When a component is considered as " setting
Set " another component, it, which can be, is set up directly on another component or may be simultaneously present the component being centrally located.
In addition, the indicating positions such as term " length " " short " "inner" "outside" or positional relationship for the orientation that is shown based on attached drawing or
Person's positional relationship is merely for convenience of the description present invention, rather than the device or original part of indication or suggestion meaning must have this
Specific orientation is operated with specific orientation construction, should not be understood as limitation of the invention with this.
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
As shown in FIG. 1 to 3, the present embodiment provides a kind of Methane decarbonization reforming systems comprising Methane decarbonization and methane
1, vapor supply unit 2 of coupling device, secondary vapor supply unit 3 and the marsh gas purifying unit 4 of reformation.
Wherein, as shown in Figure 1, the coupling device 1 of Methane decarbonization and methane reforming successively includes storing section from top to bottom
101, decarbonization section 102, transfer section 104 and reforming sections 105.The storing section 101 is for storing biogas and vapor.With the storage
The decarbonization section 102 that material section 101 is connected to is used to store the decarburizer of removing carbon dioxide；The storing section 101 and decarbonization section 102
Outside be coated with preliminary heating zone 103.The transfer section 104 being connected to the decarbonization section 102 is for storing from decarbonization section 102
Methane and vapor.The reforming sections 105 include reaction channel 1051 and heat donor passage 1052.The reaction channel 1051
Upper end is connected to the transfer section 104, and the lower end of the reaction channel 1051 is connected to the exterior space of the reforming sections 105；
The reaction channel 1051 is for catalyst needed for storing reforming reaction.The reaction channel 1051 is located at the heat donor passage
In 1052 and the reaction channel 1051 is not connected to the heat donor passage 1052；The hot air intake of the heat donor passage 1052 is used
It is connected in the high-temperature exhaust air mouth with SOFC, the hot air intake of the heat outlet of the heat donor passage 1052 and the preliminary heating zone 103
Connection.
Preferably, the decarburizer is calcium oxide.Specifically, calcium oxide decarburization effect is preferable.
Preferably, the radius of the one end of the transfer section 104 close to decarbonization section 102 is less than the transfer section 104 close to weight
The radius of whole section 105 one end.Specifically, it is arranged such and advantageously reduces the pressure drop in transfer section 104 and increase reforming sections 105
Heat exchange area.
Preferably, the reforming sections 105 are in shell-and-tube heat exchanger structure, the tube side space of the shell-and-tube heat exchanger structure
For the reaction channel 1051, the shell side space of the shell-and-tube heat exchanger structure is the heat donor passage 1052.Further,
Heat-storing material is filled in the heat donor passage 1052 and preliminary heating zone 103.Specifically, heat can be improved in setting heat-storing material
Utilization efficiency, achieve the effect that environmental protection and energy saving.
In this present embodiment: the steam outlet of a vapor supply unit 2 and the water of the storing section 101 steam
The hot air intake of gas inlet communication, a vapor supply unit 2 is connected to the heat outlet of the preliminary heating zone 103.Institute
The steam outlet of secondary vapor supply unit 3 and the vapor inlet communication of the transfer section 104 are stated, the secondary water is steamed
The hot air intake of gas supply unit 3 is connected to the heat outlet of a vapor.Marsh gas purifying unit 4, the marsh gas purifying list
Member 4 methane outlet and the storing section 101 biogas inlet communication, the hot air intake of the marsh gas purifying unit 4 with it is described
The heat outlet of secondary vapor supply unit 3 is connected to.Preferably, the heat outlet of the reforming sections 105 passes through triple valve point
It is not connected to the hot air intake of the preliminary heating zone 103 and the hot air intake of a vapor supply unit 2.
Since reforming reaction and decarburizing reaction are to carry out under high temperature, it is therefore desirable to by after room temperature to reaction temperature again
It is passed through reaction gas to be reacted, the heat flow chart of heating startup stage and stable operation stage is different, the heat needed
Amount is by 1000 DEG C of -1100 DEG C of offers of SOFC high-temperature exhaust air.Below in conjunction with specific example to the work of this Methane decarbonization reforming system
It is illustrated as process:
(1) as shown in Fig. 2, startup stage:
1. SOFC high-temperature exhaust air, which is realized, enters reforming sections 105, heat exchange is mainly used for catalyst, reactor and accumulation of heat
The heating of body, for the final temperature of reforming sections 105 at 600-800 DEG C, the heat of absorption is Q1。
2. triple valve to be switched to the hot air intake of the heat outlet and preliminary heating zone 103 of connection reforming sections 105；By reforming sections
The flue gas of 105 discharges heats storing section 101 and decarbonization section 102, and the heat that storing section 101 and decarbonization section 102 absorb is
Q2And it is finally warming up to 600-800 DEG C.
3. the high-temperature exhaust air being discharged by preliminary heating zone 103 exchanges heat with a vapor supply unit 2, vapor
H2CO in the amount and biogas of O2Ratio H2O:CO2=1:1~1:1.5, the vapor of a vapor supply unit 2 supply
For temperature at 500-700 DEG C, the heat which absorbs is Q3。
4. the high-temperature exhaust air for leaving a vapor supply unit 2 enters secondary vapor supply unit 3, a vapor
Following provisions are followed with secondary vapor supply: (CH in biogas4+CO2) amount and total vapor amount ratio (CH4+
CO2):H2O≤1:3.The pressure drop that secondary vapor can reduce decarburization unit, the consumption for reducing power loss and energy are supplied, is supplied
Secondary vapor is answered to also help the regulation reacted for realizing reforming sections 105 and decarbonization section 102 respectively.Secondary vapor supply is single
It is Q that member 3, which absorbs heat,4, final temperature reaches 500-700 DEG C.
5. the high-temperature exhaust air for leaving secondary vapor supply unit 3 enters marsh gas purifying unit 4, pre- for carrying out to biogas
Heat.The caloric receptivity of biogas is Q5, final temperature reaches 400-600 DEG C.
6. the high-temperature exhaust air for leaving marsh gas purifying unit 4 carries heat Q6, processing can be drained or enter next step
Cleaning procedure.
(2) as shown in figure 3, stable operation stage:
1. the reaction due to decarbonization section 102 is exothermic reaction, do not need to be carried out by high-temperature flue gas again after reaching stable operation
Heat exchange processing.Switching three-way valve connects the hot air intake of the heat outlet and a vapor supply unit 2 of heat donor passage 1052
It is logical.
2. the high-temperature exhaust air being discharged by reforming sections 105 directly successively supplies a vapor supply unit 2, secondary vapor
Unit 3 and marsh gas purifying unit 4 is answered to exchange heat, corresponding absorbed heat is respectively Q7、Q8And Q9, final low-temperature flue gas
Carry heat Q6, processing can be drained or enter the cleaning procedure of next step.
In the present embodiment using CaO as decarburizer and CO2It chemically reacts, has the advantages that 1. the reaction is
The heat of strong exothermal reaction, releasing can be the heat supply of methane in sewage gas reforming reaction, to realize energy conservation；2. natural pond can be removed
CO in gas2, emission reduction is realized, and can simplify the technique of hydrogen preparation unit；3. reaction product calcium carbonate is a kind of quilt
Widely applied Inorganic Chemicals realizes the comprehensive utilization of resource.
Methane decarbonization reforming system provided in this embodiment has the advantages that 1. decarburizing reaction is strong exothermal reaction, is put
Heat out can be the heat supply of methane in sewage gas reforming reaction, to realize energy conservation；2. using the method for decoupling by decarbonization section
102 carry out in two reactors respectively with reforming sections 105, reform when avoiding CaO and catalyst in a reactor anti-
It should be with the caloic problem of management of two reaction rates of decarburizing reaction complexity caused by inconsistent；3. the CO in biogas can be removed2,
Emission reduction is realized, and can simplify technique；4. reaction product calcium carbonate is a kind of Inorganic Chemicals being widely used, real
The comprehensive utilization of resource is showed；5. decarbonizing process reaction release heat and preparation methane enter directly into reforming reaction from
And the direct inner couplings unit of substance and energy between constituting decarburization and reforming；6. decarbonization section 102 and reforming sections 105
Manifold type whole design can simplify decarburization and reforming process, realize the efficient coupling of substance and energy.Therefore, the present embodiment
Energy-saving and emission-reduction, comprehensive utilization of resources and the process for simplifying technique may be implemented in the Methane decarbonization reforming system of offer.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
1. the coupling device of a kind of Methane decarbonization and methane reforming characterized by comprising
Storing section (101), the storing section (101) is for storing biogas and vapor；
Decarbonization section (102), the decarbonization section (102) being connected to the storing section (101) are used to store the de- of removing carbon dioxide
Carbon agent；
Preliminary heating zone (103), the preliminary heating zone (103) are coated on the outside of the storing section (101) and decarbonization section (102)；
Transfer section (104), the transfer section (104) being connected to the decarbonization section (102) is for storing from decarbonization section (102)
Methane and vapor；
Reforming sections (105), the reforming sections (105) include:
Reaction channel (1051), the upper end of the reaction channel (1051) are connected to the transfer section (104), the reaction channel
(1051) lower end is connected to the exterior space of the reforming sections (105)；The reaction channel (1051) is reformed instead for storing
Answer required catalyst；
Heat donor passage (1052), the reaction channel (1051) is located in the heat donor passage (1052) and the reaction channel
(1051) it is not connected to the heat donor passage (1052)；The hot air intake of the heat donor passage (1052) is for the high temperature with SOFC
Exhaust outlet connection, the heat outlet of the heat donor passage (1052) are connected to the hot air intake of the preliminary heating zone (103).
2. the coupling device of Methane decarbonization according to claim 1 and methane reforming, which is characterized in that the decarburizer is
Calcium oxide.
3. the coupling device of Methane decarbonization according to claim 1 and methane reforming, which is characterized in that the transfer section
(104) radius close to the one end of decarbonization section (102) is less than the half of one end of the transfer section (104) close reforming sections (105)
Diameter.
4. the coupling device of Methane decarbonization according to claim 1 and methane reforming, which is characterized in that the reforming sections
It (105) is in shell-and-tube heat exchanger structure, the tube side space of the shell-and-tube heat exchanger structure is the reaction channel (1051), institute
The shell side space for stating shell-and-tube heat exchanger structure is the heat donor passage (1052).
5. the coupling device of Methane decarbonization according to claim 4 and methane reforming, which is characterized in that the heat donor passage
(1052) heat-storing material is filled in.
6. the coupling device of Methane decarbonization according to claim 5 and methane reforming, which is characterized in that the preliminary heating zone
(103) heat-storing material is filled in.
7. a kind of Methane decarbonization reforming system, the coupling including claim 1~6 described in any item Methane decarbonizations and methane reforming
It attaches together and sets (1), which is characterized in that further include:
Vapor supply unit (2), the steam outlet of a vapor supply unit (2) and the storing section
(101) vapor inlet communication, hot air intake and the preliminary heating zone (103) of a vapor supply unit (2)
Heat outlet connection；
Secondary vapor supply unit (3), the steam outlet of the secondary vapor supply unit (3) and the transfer section
(104) vapor inlet communication, the hot air intake of the secondary vapor supply unit (3) and the hot gas of a vapor go out
Mouth connection；
Marsh gas purifying unit (4), the biogas import of the methane outlet of the marsh gas purifying unit (4) and the storing section (101)
Connection, the hot air intake of the marsh gas purifying unit (4) are connected to the heat outlet of the secondary vapor supply unit (3).
8. Methane decarbonization reforming system according to claim 7, which is characterized in that the hot gas of the reforming sections (105) goes out
Mouthful by triple valve respectively with the hot gas of the hot air intake of the preliminary heating zone (103) and a vapor supply unit (2) into
Mouth connection.
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