CN104826569A - Multi-stage injection-type line focus solar absorption reactor - Google Patents
Multi-stage injection-type line focus solar absorption reactor Download PDFInfo
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- CN104826569A CN104826569A CN201510169683.8A CN201510169683A CN104826569A CN 104826569 A CN104826569 A CN 104826569A CN 201510169683 A CN201510169683 A CN 201510169683A CN 104826569 A CN104826569 A CN 104826569A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a multi-stage injection-type line focus solar absorption reactor for middle and low temperature solar thermochemistry. The reactor includes a line focus reflective mirror array, variable diameter absorption reaction tubes and an injection pipe. The variable diameter absorption reaction tubes are arranged in a plurality of mirrors among the reflective mirror array; part of the reactant enters the absorption reaction tubes from the inlets on the ends of the reaction tubes, and the remaining reactant is injected into the absorption reaction tubes in a multi-stage way through the injection pipe along the tube; after entrance into the reaction tubes, the reactant is heated by the solar focused by the line focus reflective mirror array, and generates endothermic reaction under the catalyst condition, so as to convert solar energy into chemical energy of the resultant and improve response reactant grade. The invention improves the chemical processes and apparatus, so that the structure reasonably matches the parameters such as specific reaction characteristics and working fluid status in the absorption reaction tubes. The reactor achieves the efficient energy transfer and transformation, improves the overall reaction efficiency and reduces the overall energy consumption.
Description
Technical field
The present invention relates to the middle low-temperature solar chemical utilization technical field of 300 DEG C ~ 500 DEG C, especially a kind of multistage pouring-in line-focusing solar absorption reactor thermally.
Background technology
Because social development increases day by day for energy demand, fossil energy increasingly sharpening for problem of environmental pollution in addition, greatly developing regenerative resource has become the current active demand of China.
Solar energy becomes one of effective way solving the problem such as energy shortage, environmental pollution and greenhouse effects developing fossil energy and bring with the spatter property of the unlimitedness of its reserves, exploitation.Solar heat chemistry achieves the chemical energy storage of solar energy, solves solar energy intermittence, discontinuity, inherent shortcoming that energy-flux density is low.
Solar heat chemistry mainly utilizes endothermic chemical reaction process, the solar energy of gathering is converted into the chemical energy of hydrocarbon fuel.The heat chemistry energy conversion system of solar energy and the fossil fuel complementation action edge that can carry out in the place that solar energy resources is abundant going forward side by side circulate, also can convert solar energy into secondary fuel and be transported to other places.Mainly concentrate within the scope of high-temperature about solar heat chemistry at present, have that solar conversion efficiency is low, the high scientific and technical difficult problem of cost of investment.Golden red light research team proposes middle low-temperature solar energy converting fuel method and launches correlative study.Middle low-temperature solar energy thermochemical process is easy to realize, and utilizes parabolic trough type solar thermal collector, and solar radiation being focused on the thermal source becoming 300 ~ 500 DEG C, is that fuel or heating steam are utilized by steam turbine power generation by thermochemical study.
At present, parabolic trough type is temperature solar heat utilization technology in the one of maturation the most, and be applied to middle low-temperature solar chemical field, its focus version belongs to line focus.This technology is used for heat chemistry field, and relate to the reformation on beds of alcohols or alkanes and pyrolytic reaction, producing synthesis gas, converts solar energy into the chemical energy of fossil fuel more.But due to the carrying out along with chemical reaction, reactant reduces gradually along tube side, partial pressure reduces, and causes reaction to ease up problem; Meanwhile, chemical reaction institute calorific requirement reduces, and the latent heat of vaporization that the solar energy major part of convergence is converted into forming gas makes the temperature of catalytic bed raise, and catalyst at high temperature easily produces sintering inefficacy, causes reaction efficiency to reduce further.
Given this, the present invention proposes a kind of multistage pouring-in line-focusing solar absorption reactor thermally, and extends to middle low-temperature solar Chemical activator field.
Summary of the invention
(1) technical problem that will solve
In view of this, main purpose of the present invention is to provide a kind of multistage pouring-in line-focusing solar absorption reactor thermally, to solve the problem that in current line-focusing solar heat chemistry device, reaction rate reduces along tube side gradually because reactant partial pressure power reduces.
(2) technical scheme
For achieving the above object, the invention provides a kind of multistage pouring-in line-focusing solar absorption reactor thermally, for middle low-temperature solar energy heat chemistry, comprise line focus mirror array, reducing absorption reaction pipe 3 and flow in pipes 4, wherein, reducing absorption reaction pipe 3 is arranged among multiple reflective mirrors of line focus mirror array, and partial reaction thing enters absorption reaction pipe 3 by the end inlet of absorption reaction pipe 3, and remaining reaction thing passes through flow in pipes 4 along tube side multistage injection absorption reaction pipe 3; After reactant enters absorption reaction pipe 3, by the solar energy heating that line focus mirror array focuses on, under catalysts conditions, there is the endothermic reaction, convert solar energy into the chemical energy of product, promote reactant grade.
In such scheme, described line focus mirror array is made up of multiple linear Fresnel reflective mirror 1, or is made up of multiple parabolic trough type reflective mirror 2.The axis of described reducing absorption reaction pipe 3 overlaps with the focal line of linear Fresnel reflective mirror 1 each in line focus mirror array or parabolic trough type reflective mirror 2.
In such scheme, the caliber of described reducing absorption reaction pipe 3 increases gradually along tube side, and to ensure reactant not because multistage injection causes increasing gradually along tube side gas flow rate, resistance increases thereupon, and the reaction time reduces thereupon.
In such scheme, described partial reaction thing enters absorption reaction pipe 3 by the end inlet of absorption reaction pipe 3, remaining reaction thing passes through flow in pipes 4 along tube side multistage injection absorption reaction pipe 3, in order to ensure reactant not because relative partial pressure power causes reaction rate to reduce along tube side reduction thereupon.
(3) beneficial effect
As can be seen from technique scheme, the present invention has following beneficial effect:
1, multistage pouring-in line-focusing solar absorption reactor thermally provided by the invention, reactant classification is injected in absorption reaction pipe, reactant is kept significantly not reduce along journey relative partial pressure power, and then reaction rate does not significantly reduce, realize absorption reaction pipe flow process and kinetics feature matches, can W-response efficiency be improved.
2, multistage pouring-in line-focusing solar absorption reactor thermally provided by the invention, absorption reaction pipe caliber increases along tube side, gas flow rate is kept significantly not raise along tube side, and then the reaction time does not significantly reduce, realize absorption reaction tubular construction and working fluid mechanics feature matches, can energy ezpenditure be reduced.
3, multistage pouring-in line-focusing solar absorption reactor thermally provided by the invention; by the multistage injection rate of synergic adjustment reactant; can control to carry out degree along tube side molecular balance forward; thus controls local reaction heat (being provided by focused solar energy); and then control along tube side reaction temperature; catalyst failure and the distortion of absorption reaction pipe when avoiding reaction temperature too high, can available protecting catalyst, the extension fixture life-span.
4, multistage pouring-in line-focusing solar absorption reactor thermally provided by the invention, by the classification injection rate of synergic adjustment reactant, can regulate reaction temperature, reduces temperature rise, realizes the distribution of catalytic bed homogeneous temperature, extends absorption reaction tube lifetime.
Accompanying drawing explanation
Fig. 1 is the structural representation of the multistage pouring-in line-focusing solar absorption reactor thermally according to first embodiment of the invention, and wherein, each parts and respective markers are: 1-linear Fresnel reflective mirror; 3-reducing absorption reaction pipe; 4-flow in pipes.
Fig. 2 is the structural representation of the multistage pouring-in line-focusing solar absorption reactor thermally according to second embodiment of the invention, and wherein, each parts and respective markers are: 2-parabolic trough type reflective mirror; 3-reducing absorption reaction pipe; 4-flow in pipes.
Fig. 3 is the schematic diagram of the multistage pouring-in linear fresnel solar alcohol reforming system according to third embodiment of the invention, and wherein, each parts and respective markers are: 1-linear Fresnel reflective mirror; 2-reducing absorption reaction pipe; 3-flow in pipes; 4-regenerator; 5-condenser; 6-cooling tower; 7-gas-liquid separator; 8-circulating pump; 9-evaporimeter.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Multistage pouring-in line-focusing solar absorption reactor thermally provided by the invention, for middle low-temperature solar energy heat chemistry, comprise: line focus mirror array, reducing absorption reaction pipe 3 and flow in pipes 4, wherein, line focus mirror array is made up of multiple linear Fresnel reflective mirror 1, or is made up of multiple parabolic trough type reflective mirror 2.Reducing absorption reaction pipe 3 is arranged among line focus mirror array, and the axis of reducing absorption reaction pipe 3 overlaps with the focal line of linear Fresnel reflective mirror 1 each in line focus mirror array or parabolic trough type reflective mirror 2.Partial reaction thing enters absorption reaction pipe 3 by the end inlet of absorption reaction pipe 3, and remaining reaction thing passes through flow in pipes 4 along tube side multistage injection absorption reaction pipe 3, to ensure reactant not because relative partial pressure power causes reaction rate to reduce along tube side reduction thereupon.After reactant enters absorption reaction pipe 3, by the solar energy heating that line focus mirror array focuses on, under catalysts conditions, there is the endothermic reaction, convert solar energy into the chemical energy of product, promote reactant grade.The caliber of reducing absorption reaction pipe 3 increases gradually along tube side, and to ensure reactant not because multistage injection causes increasing gradually along tube side gas flow rate, resistance increases thereupon, and the reaction time reduces thereupon.
Fig. 1 is the structural representation of the multistage pouring-in line-focusing solar absorption reactor thermally according to first embodiment of the invention, this multistage pouring-in line-focusing solar absorption reactor thermally is used for middle low-temperature solar energy heat chemistry, comprise line focus mirror array, reducing absorption reaction pipe 3 and flow in pipes 4, wherein line focus mirror array is made up of multiple linear Fresnel reflective mirror 1.
With reference to Fig. 1, the axis of reducing absorption reaction pipe 3 overlaps with the focal line of linear Fresnel reflective mirror 1.Reactant enters absorption reaction pipe 3, under the solar energy heating focused on and catalysts conditions, the endothermic reaction occurs by linear Fresnel reflective mirror 1, converts solar energy into the chemical energy of product, promotes reactant grade.Reactant part enters absorption reaction pipe 3 by end inlet, and all the other pass through flow in pipes 4 along tube side multistage injection absorption reaction pipe 3, to ensure reactant not because relative partial pressure power causes reaction rate to reduce along tube side reduction thereupon.The caliber of reducing absorption reaction pipe 3 increases gradually along tube side, and to ensure reactant not because multistage injection causes increasing gradually along tube side gas flow rate, resistance increases thereupon, and the reaction time reduces thereupon.
Fig. 2 is the structural representation of the multistage pouring-in line-focusing solar absorption reactor thermally according to second embodiment of the invention, this multistage pouring-in line-focusing solar absorption reactor thermally is used for middle low-temperature solar energy heat chemistry, comprise line focus mirror array, reducing absorption reaction pipe 3 and flow in pipes 4, wherein line focus mirror array is made up of multiple parabolic trough type reflective mirror 2.
With reference to Fig. 2, the axis of reducing absorption reaction pipe 3 overlaps with the focal line of parabolic trough type reflective mirror 2.Reactant enters absorption reaction pipe 3, under the solar energy heating that polished object trough reflectors 2 focuses on and catalysts conditions, the endothermic reaction occurs, converts solar energy into the chemical energy of product, promote reactant grade.Reactant part enters absorption reaction pipe 3 by end inlet, and all the other pass through flow in pipes 4 along tube side multistage injection absorption reaction pipe 3, to ensure reactant not because relative partial pressure power causes reaction rate to reduce along tube side reduction thereupon.The caliber of reducing absorption reaction pipe 3 increases gradually along tube side, and to ensure reactant not because multistage injection causes increasing gradually along tube side gas flow rate, resistance increases thereupon, and the reaction time reduces thereupon.
Fig. 3 is the schematic diagram of the multistage pouring-in linear fresnel solar alcohol reforming system according to third embodiment of the invention, comprise line focus mirror array, reducing absorption reaction pipe 2, flow in pipes 3, regenerator 4, condenser 5, cooling tower 6, gas-liquid separator 7, circulating pump 8 and evaporimeter 9, wherein line focus mirror array is made up of multiple linear Fresnel reflective mirror 1.
With reference to Fig. 3, alcohols liquid material is after evaporator 9 and regenerator 4 are heated as vapor of alcohols, and part enters reducing absorption reaction pipe 2 by end inlet, and all the other inject reducing absorption reaction pipe 2 step by step by flow in pipes 3.Vapor of alcohols focused solar energy heating and catalyst (as Cu/ZnO/Al
2o
3) there is reforming reaction under the condition that participates in, produce synthesis gas (as H
2/ CO
2/ H
2o).Finally, synthesis gas and unreacted leave reducing absorption reaction pipe 2 together with vapor of alcohols completely and enter condenser 5.Vapor of alcohols is condensed into liquid alcohols, mixes after gas-liquid separator 7 is separated with alcohols liquid material, reenters circulation participate in reaction through circulating pump 8.In system, the cooling water in condenser 5 is provided by cooling tower 6.Export as product through the isolated synthesis gas of gas-liquid separator 7, store further or directly use.
In process shown in Fig. 3, because gas reactant injects reducing absorption reaction pipe 2 step by step by flow in pipes 3, and reducing absorption reaction pipe 2 caliber increases along tube side, thus ensure that higher along tube side reaction rate with less along tube side flow resistance, improve reaction efficiency on the whole, reduce energy ezpenditure.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a multistage pouring-in line-focusing solar absorption reactor thermally, for middle low-temperature solar energy heat chemistry, it is characterized in that, comprise line focus mirror array, reducing absorption reaction pipe (3) and flow in pipes (4), wherein, reducing absorption reaction pipe (3) is arranged among multiple reflective mirrors of line focus mirror array, partial reaction thing enters absorption reaction pipe (3) by the end inlet of absorption reaction pipe (3), and remaining reaction thing passes through flow in pipes (4) along tube side multistage injection absorption reaction pipe (3); After reactant enters absorption reaction pipe (3), by the solar energy heating that line focus mirror array focuses on, under catalysts conditions, there is the endothermic reaction, convert solar energy into the chemical energy of product, promote reactant grade.
2. multistage pouring-in line-focusing solar absorption reactor thermally according to claim 1, it is characterized in that, described line focus mirror array is made up of multiple linear Fresnel reflective mirror (1), or is made up of multiple parabolic trough type reflective mirror (2).
3. multistage pouring-in line-focusing solar absorption reactor thermally according to claim 2, it is characterized in that, the axis of described reducing absorption reaction pipe (3) overlaps with the focal line of linear Fresnel reflective mirror (1) each in line focus mirror array or parabolic trough type reflective mirror (2).
4. multistage pouring-in line-focusing solar absorption reactor thermally according to claim 1, it is characterized in that, the caliber of described reducing absorption reaction pipe (3) increases gradually along tube side, to ensure reactant not because multistage injection causes increasing gradually along tube side gas flow rate, resistance increases thereupon, and the reaction time reduces thereupon.
5. multistage pouring-in line-focusing solar absorption reactor thermally according to claim 1, it is characterized in that, described partial reaction thing enters absorption reaction pipe (3) by the end inlet of absorption reaction pipe (3), remaining reaction thing passes through flow in pipes (4) along tube side multistage injection absorption reaction pipe (3), in order to ensure reactant not because relative partial pressure power causes reaction rate to reduce along tube side reduction thereupon.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018006444A1 (en) * | 2016-07-06 | 2018-01-11 | 江南大学 | Array-type induced electric field fluid reaction system and application thereof |
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| US20070227533A1 (en) * | 2006-03-31 | 2007-10-04 | Butler Barry L | Interchangeable Modular Solar Thermal Collector Builing Block System |
| DE102011004264A1 (en) * | 2011-02-17 | 2012-08-23 | Siemens Aktiengesellschaft | Solar-thermal steam generator for solar-thermal power plant, has solar-heatable parallelly arranged pipes for guiding working medium, and mixing location arranged between two stages, where pipes are brought together at mixing location |
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2015
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Patent Citations (4)
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| US20070227533A1 (en) * | 2006-03-31 | 2007-10-04 | Butler Barry L | Interchangeable Modular Solar Thermal Collector Builing Block System |
| DE102011004264A1 (en) * | 2011-02-17 | 2012-08-23 | Siemens Aktiengesellschaft | Solar-thermal steam generator for solar-thermal power plant, has solar-heatable parallelly arranged pipes for guiding working medium, and mixing location arranged between two stages, where pipes are brought together at mixing location |
| CN104110898A (en) * | 2013-04-19 | 2014-10-22 | 中国科学院工程热物理研究所 | Variable-irradiation and active-control groove-type solar light condensing and heat collecting device and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018006444A1 (en) * | 2016-07-06 | 2018-01-11 | 江南大学 | Array-type induced electric field fluid reaction system and application thereof |
| US20190118153A1 (en) * | 2016-07-06 | 2019-04-25 | Jiangnan University | Array Induced Electric Field Fluid Reaction System and Applications Thereof |
| US10695736B2 (en) * | 2016-07-06 | 2020-06-30 | Jiangnan University | Array induced electric field fluid reaction system and applications thereof |
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| CN104826569B (en) | 2016-08-17 |
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