CN103245087A - Indirect intermediate-temperature chemical energy storage device for solar heat on basis of chemical-looping combustion - Google Patents
Indirect intermediate-temperature chemical energy storage device for solar heat on basis of chemical-looping combustion Download PDFInfo
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Abstract
The invention discloses an indirect intermediate-temperature chemical energy storage device for solar heat on the basis of chemical-looping combustion. The indirect intermediate-temperature chemical energy storage device comprises parabolic trough condensers, line-focus reinforced heat collecting tubes, a shell and tube heat collecting reactor, a heat collecting fluid regulating valve, a heat collecting fluid standby storage tank, a gas-solid oxidation reactor, a gas distributing board, a gas-solid heat exchange device, a gas-solid separating device and a pressure pump. The line-focus reinforced heat collecting tubes and the shell and tube heat collecting reactor are connected with the pressure pump, the shell and tube heat collecting reactor and a return valve are connected with the gas-solid oxidation reactor, and the gas-solid oxidation reactor, the gas-solid separating device and the gas-solid heat exchange device are connected with the shell and tube heat collecting reactor. When solar energy is unavailable or the irradiation intensity of the solar energy is insufficient, the line-focus reinforced heat collecting tubes, the heat collecting fluid regulating valve, the heat collecting fluid standby storage tank and the shell and tube heat collecting reactor are connected with the pressure pump. The collected solar heat is stored in a metallic solid fuel form by the indirect intermediate-temperature chemical energy storage device, and the indirect intermediate-temperature chemical energy storage device has the advantages of high energy storage density, simple structure, flexibility in regulation and control and the like.
Description
Technical field
The present invention relates to solar thermal utilization and technical field of power generation, relate in particular to a kind of based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains.
Background technology
Current, the solar energy thermal-power-generating that photo-thermal transforms becomes the most attractive heliotechnics of following twenty or thirty year.Yet because low, the time discontinuity of energy of solar energy density and the inequality of spatial distribution, for a comparatively long period of time, solar energy substitutes fossil fuel fully and still can't realize.
The solar heat chemistry is to utilize solar thermal energy to drive endothermic chemical reaction, reaction institute calorific requirement is provided, with the conversion of solar energy of disperseing be the energy density height, can store, fuel forms such as transportable synthesis gas or H2 are used, mode by fuel reservoir has realized energy storage, has solved that the solar energy energy-flux density is low, energy supplies with unstable and problem pockety.
The research of solar heat chemical reactor at present focuses mostly in 800 ℃ of high temperature solar thermochemical reactor fields, mainly contains the cavity type of direct irradiation, optically focused endothermic reaction device repeatedly.They adopt direct heat to transmit form, can realize high-temperature and high-energy conversion efficiency, more efficient use solar energy, and start-up time is short, and system is simple, economical, but the solar energy energy-flux density is inhomogeneous and hot-spot will cause catalysqt deactivation.Directly irradiation cavity type reactor is also needing special consideration aspect the optical property (as absorptivity, emissivity etc.) of reactor material selection and catalyst in addition, and application is restricted.And repeatedly optically focused endothermic reaction device owing at present adopt tower beam condensing units more, and reactor tube is heated inhomogeneously, is unfavorable for the solar heat conversion, transmits, and reaction is brought adverse effect.
Through to the literature search of prior art, still there is not the report of temperature solar heat chemistry energy storage device in realizing 300 ℃～400 ℃ based on burning chemistry chains at present.
Summary of the invention
(1) technical problem that will solve
In view of this, the objective of the invention is to propose a kind of based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, to solve problems such as heat collector cost height, complex structure, material that high temperature solar heat chemistry aspect exists be limited, effective utilization of temperature solar heat in the realization.
(2) technical scheme
For achieving the above object, the invention provides a kind of based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, comprise parabolic slot type condenser 1, line focus is strengthened thermal-collecting tube 2 and shell-and-tube thermal-arrest reactor 12, and thermal-arrest fluid regulation valve 3, thermal-arrest backed up for flow storage tank 4, material returning valve 13, air distribution plate 25, the metal oxide energy storage material, gas-solid separator 20, gas-solid heat-exchanger rig 21, solid flow control valve 22, gas-solid oxidation reactor 17 and compression pump 7, wherein: the outlet that line focus is strengthened thermal-collecting tube 2 is connected with tubulation 26 imports of shell-and-tube thermal-arrest reactor 12, the thermal-arrest fluid flows in pipe, tubulation 26 outlets of shell-and-tube thermal-arrest reactor 12 are connected with the entrance of compression pump 7, the outlet of compression pump 7 is connected with the entrance that line focus is strengthened thermal-collecting tube 2, shell-and-tube thermal-arrest reactor 12 circulating granular discharging openings 10 are connected with the entrance of material returning valve 13, the outlet of material returning valve 13 is connected with the circulating granular charging aperture 14 of gas-solid oxidation reactor 17, the gas-solid mixture of gas-solid oxidation reactor 17 outlet 16 is connected with the entrance of gas-solid separator 20, the outlet of gas-solid separator 20 is connected with the entrance of gas-solid heat-exchanger rig 21, the outlet of gas-solid heat-exchanger rig 21, solid flow control valve 22 is connected with shell-and-tube thermal-arrest reactor 12 circulating granular charging apertures 9.
In the such scheme, be provided with reactor heat exchanging pipe 26, air distribution plate 25 in the described shell-and-tube thermal-arrest reactor 12, on air distribution plate 25, be thick with qi-emitting hole 29, the metal oxide energy storage material is loaded in the shell of shell-and-tube thermal-arrest reactor 12, fuel enters in the shell-and-tube thermal-arrest reactor 12 and metal oxide energy storage material generation chemical reaction by air distribution plate 25, and the thermal-arrest fluid provides institute's calorific requirement by tubulation 26 for reaction; Subsequently under the gravity effect of bed of material potential difference, the air generation oxidation reaction of solid material in material returning valve 13 enters gas-solid oxidation reactor 17 and after gas-solid heat-exchanger rig 21 heat exchange in the shell-and-tube thermal-arrest reactor 12; Oxidation reaction product separates through gas-solid separator 20, and the solid metal oxide energy storage material after the separation enters and participates in new round reaction in the shell-and-tube thermal-arrest reactor 12 by behind gas-solid heat-exchanger rig 21 preheated airs.
In the such scheme, when no solar energy or solar energy irradiation intensity deficiency, chemical reaction institute calorific requirement is provided by thermal-arrest backed up for flow storage tank 4 in the shell-and-tube thermal-arrest reactor 12, the outlet of line focus reinforcement this moment thermal-collecting tube 2 is connected with the import of thermal-arrest fluid regulation valve 3, the outlet of thermal-arrest fluid regulation valve 3 is connected with the entrance of thermal-arrest backed up for flow storage tank 4, the outlet of thermal-arrest backed up for flow storage tank 4 is connected with the import of the tubulation 26 of shell-and-tube thermal-arrest reactor 12, the outlet of the tubulation 26 of shell-and-tube thermal-arrest reactor 12 is connected with the entrance of compression pump 7, and the outlet of compression pump 7 is connected with the import that line focus is strengthened thermal-collecting tube 2.
In the such scheme, when solar energy irradiation was sufficient, tubulation 26, compression pump 7 that described line focus is strengthened in thermal-collecting tube 2, the shell-and-tube thermal-arrest reactor 12 were connected successively, constituted thermal-arrest fluid flowloop.
In the such scheme, under the situation of no solar energy or solar energy irradiation intensity deficiency, tubulation 26, compression pump 7 that line focus is strengthened in thermal-collecting tube 2, thermal-arrest fluid regulation valve 3, thermal-arrest backed up for flow storage tank 4, the shell-and-tube thermal-arrest reactor 12 are connected successively, constitute thermal-arrest fluid flowloop.
In the such scheme, shell-and-tube thermal-arrest reactor 12, material returning valve 13, gas-solid oxidation reactor 17, gas-solid separator 20, gas-solid heat-exchanger rig 21, solid flow control valve 22 are connected successively, constitute the closed circuit of metal oxide energy storage material.
In the such scheme, the fuel in the shell-and-tube thermal-arrest reactor 12 uses alternative fuel such as dimethyl ether, and the carrier of oxygen is metal oxides such as cobalt oxide, iron oxide, nickel oxide.
(3) beneficial effect
From technique scheme as can be seen, the invention has the beneficial effects as follows:
1, provided by the invention based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, solar thermal collector adopts parabolic slot type concentration structure, simple in structure, provide 300 ℃ to the heat of 400 ℃ of temperature ranges, compare with high-temp solar heat collector, manufacturing and operating cost are lower, are conducive to large-scale promotion and application; In addition, this solar thermal collector is the temperature and the needed temperature coupling of reaction of heat energy with conversion of solar energy, has realized the reasonable utilization of middle temperature solar;
2, provided by the invention based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, under the situation of no solar energy or solar irradiation undercapacity, reduction reaction institute calorific requirement among the present invention can be provided by thermal-arrest backed up for flow storage tank, guarantees the continuous operation of the present invention under the condition of no solar energy or solar irradiation undercapacity.
3, provided by the invention based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, solar energy heating stores with metal solid fuel form, have energy storage density height, simple in structure, variable working condition is regulated and control flexibly, can extensive use solar thermal utilization and power field.
Description of drawings
Fig. 1 is the schematic diagram based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains according to the embodiment of the invention;
Fig. 2 is the schematic diagram of shell-and-tube thermal-arrest reactor 12 in the temperature solar heat chemistry energy storage device in the indirect type shown in Figure 1;
Wherein, Reference numeral is as follows:
1, parabolic slot type condenser, 2, line focus is strengthened thermal-collecting tube, 3, thermal-arrest fluid regulation valve, 4, thermal-arrest backed up for flow storage tank, 5, the thermal-arrest fluid intake, 6, the thermal-arrest fluid issuing, 7, compression pump, 8, fuel inlet, 9, shell-and-tube thermal-arrest reactor cycles particulate charge mouth, 10, shell-and-tube thermal-arrest reactor cycles particle discharging opening, 11, the outlet of shell-and-tube thermal-arrest gas reactor, 12, shell-and-tube thermal-arrest reactor, 13, material returning valve, 14, gas-solid oxidation reactor circulating granular charging aperture, 15, air intake, 16, gas-solid oxidation reactor gas-solid mixture outlet, 17, gas-solid oxidation reactor, 18, gas-solid separator gas vent, 19, gas-solid separator solid outlet, 20, gas-solid separator, 21, gas-solid heat-exchanger rig, 22, the solid flow control valve; 23, upper cover, 24, low head, 25, air distribution plate, 26, tubulation, 27, shell, 28, tube sheet, 29, qi-emitting hole.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
Provided by the invention based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, comprise parabolic slot type condenser 1, line focus is strengthened thermal-collecting tube 2 and shell-and-tube thermal-arrest reactor 12, and thermal-arrest fluid regulation valve 3, thermal-arrest backed up for flow storage tank 4, material returning valve 13, air distribution plate 25, the metal oxide energy storage material, gas-solid separator 20, gas-solid heat-exchanger rig 21, solid flow control valve 22, gas-solid oxidation reactor 17 and compression pump 7, carrier of oxygen energy storage particle is CoO in the shell-and-tube thermal-arrest reactor, particle diameter is 1～2mm, fuel is selected dimethyl ether DME for use, reduction reaction temperature is 350 ℃, and dimethyl ether transforms (6CoO+DME → 6Co+2CO fully in the reactor
2+ 3H
2O, Δ H=100kJ/mol-DME), be that the 1mol dimethyl ether transforms need absorption solar heat 100kJ fully, when the dimethyl ether flow is 1kmol/h, the solar heat that reaction absorbs is 100800kWh, namely have the solar heat of 100800kWh to be converted into the chemical energy of metallic particles Co, this moment, metal carrier of oxygen amount of stored heat can reach 100800kWh.Wherein: the outlet that line focus is strengthened thermal-collecting tube 2 is connected with tubulation 26 imports of shell-and-tube thermal-arrest reactor 12, the thermal-arrest fluid flows in pipe, tubulation 26 outlets of shell-and-tube thermal-arrest reactor 12 are connected with the entrance of compression pump 7, the outlet of compression pump 7 is connected with the entrance that line focus is strengthened thermal-collecting tube 2, shell-and-tube thermal-arrest reactor 12 circulating granular discharging openings 10 are connected with the entrance of material returning valve 13, the outlet of material returning valve 13 is connected with the circulating granular charging aperture 14 of gas-solid oxidation reactor 17, the gas-solid mixture of gas-solid oxidation reactor 17 outlet 16 is connected with the entrance of gas-solid separator 20, the outlet of gas-solid separator 20 is connected with the entrance of gas-solid heat-exchanger rig 21, the outlet of gas-solid heat-exchanger rig 21, solid flow control valve 22 is connected with shell-and-tube thermal-arrest reactor 12 circulating granular charging apertures 9.
Wherein, be provided with reactor heat exchanging pipe 26, air distribution plate 25 in the described shell-and-tube thermal-arrest reactor 12, on air distribution plate 25, be thick with qi-emitting hole 29, the metal oxide energy storage material is loaded in the shell of shell-and-tube thermal-arrest reactor 12, fuel enters in the shell-and-tube thermal-arrest reactor 12 and metal oxide energy storage material generation chemical reaction by air distribution plate 25, and the thermal-arrest fluid provides institute's calorific requirement by tubulation 26 for reaction; Subsequently under the gravity effect of bed of material potential difference, the air generation oxidation reaction of solid material in material returning valve 13 enters gas-solid oxidation reactor 17 and after gas-solid heat-exchanger rig 21 heat exchange in the shell-and-tube thermal-arrest reactor 12; Oxidation reaction product separates through gas-solid separator 20, and the solid metal oxide energy storage material after the separation enters and participates in new round reaction in the shell-and-tube thermal-arrest reactor 12 by behind gas-solid heat-exchanger rig 21 preheated airs.
When no solar energy or solar energy irradiation intensity deficiency, chemical reaction institute calorific requirement is provided by thermal-arrest backed up for flow storage tank 4 in the shell-and-tube thermal-arrest reactor 12, the outlet of line focus reinforcement this moment thermal-collecting tube 2 is connected with the import of thermal-arrest fluid regulation valve 3, the outlet of thermal-arrest fluid regulation valve 3 is connected with the entrance of thermal-arrest backed up for flow storage tank 4, the outlet of thermal-arrest backed up for flow storage tank 4 is connected with the import of the tubulation 26 of shell-and-tube thermal-arrest reactor 12, the outlet of the tubulation 26 of shell-and-tube thermal-arrest reactor 12 is connected with the entrance of compression pump 7, and the outlet of compression pump 7 is connected with the import that line focus is strengthened thermal-collecting tube 2.
When solar energy irradiation was sufficient, tubulation 26, compression pump 7 that described line focus is strengthened in thermal-collecting tube 2, the shell-and-tube thermal-arrest reactor 12 were connected successively, constituted thermal-arrest fluid flowloop.
Under the situation of no solar energy or solar energy irradiation intensity deficiency, tubulation 26, compression pump 7 that line focus is strengthened in thermal-collecting tube 2, thermal-arrest fluid regulation valve 3, thermal-arrest backed up for flow storage tank 4, the shell-and-tube thermal-arrest reactor 12 are connected successively, constitute thermal-arrest fluid flowloop.
Shell-and-tube thermal-arrest reactor 12, material returning valve 13, gas-solid oxidation reactor 17, gas-solid separator 20, gas-solid heat-exchanger rig 21, solid flow control valve 22 are connected successively, constitute the closed circuit of metal oxide energy storage material.
Provided by the invention based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, its workflow in two kinds of situation:
First kind of situation, under the situation of solar energy irradiation intensity abundance, the heat that utilizes parabolic slot type condenser and line focus reinforcement thermal-collecting tube to obtain provides reaction heat for chemical reaction in the shell-and-tube thermal-arrest reactor, realizes that solar thermal energy is to the storage of metal oxide energy storage material chemical energy.
Second kind of situation, under the situation of no solar energy or solar irradiation undercapacity, chemical reaction institute calorific requirement is provided by thermal-arrest backed up for flow storage tank in the shell-and-tube thermal-arrest reactor, has guaranteed the continuous operation of system.
Among the present invention, the fuel in the shell-and-tube thermal-arrest reactor 12 uses alternative fuel such as dimethyl ether, and the carrier of oxygen is metal oxides such as cobalt oxide.
When the solar energy irradiation intensity is sufficient, closure set hot fluid stand-by storage, intensification became the high temperature heat transfer fluid after line focus was strengthened the interior 300-400 ℃ of solar heat of thermal-arrest absorption of fluids of thermal-collecting tube, enter in the shell-and-tube thermal-arrest reactor tubulation and provide reaction heat for chemical reaction in the reactor, the metal oxide energy storage material under the gravity effect of bed of material potential difference through shell-and-tube thermal-arrest reactor cycles particle discharging opening, material returning valve enters gas-solid oxidation reactor, with the air generation oxidation reaction after gas-solid heat-exchanger rig preheating, oxidation reaction product separates through gas-solid separator, solid metal oxide energy storage material after the separation enters and participates in new round reaction in the shell-and-tube thermal-arrest reactor by behind the gas-solid heat-exchanger rig preheated air.
Under the situation of no solar energy or solar energy irradiation intensity deficiency, open thermal-arrest fluid regulation valve, start thermal-arrest backed up for flow storage tank, the thermal-arrest fluid enters thermal-arrest backed up for flow storage tank and absorbs to enter in the shell-and-tube thermal-arrest reactor tubulation behind the heat reaction heat is provided, the metal oxide energy storage material under the gravity effect of bed of material potential difference through shell-and-tube thermal-arrest reactor cycles particle discharging opening, material returning valve enters gas-solid oxidation reactor, with the air generation oxidation reaction after gas-solid heat-exchanger rig preheating, oxidation reaction product separates through gas-solid separator, solid metal oxide energy storage material after the separation enters and participates in new round reaction in the shell-and-tube thermal-arrest reactor by behind the gas-solid heat-exchanger rig preheated air.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. one kind based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, comprise parabolic slot type condenser (1), line focus reinforcement thermal-collecting tube (2) and shell-and-tube thermal-arrest reactor (12), and thermal-arrest fluid regulation valve (3), thermal-arrest backed up for flow storage tank (4), material returning valve (13), air distribution plate (25), metal oxide energy storage material, gas-solid separator (20), gas-solid heat-exchanger rig (21), solid flow control valve (22), gas-solid oxidation reactor (17) and compression pump (7), wherein:
The outlet that line focus is strengthened thermal-collecting tube (2) is connected with tubulation (26) import of shell-and-tube thermal-arrest reactor (12), the thermal-arrest fluid flows in pipe, the tubulation outlet of shell-and-tube thermal-arrest reactor (12) is connected with the entrance of compression pump (7), the outlet of compression pump (7) is connected with the entrance that line focus is strengthened thermal-collecting tube (2), shell-and-tube thermal-arrest reactor (12) circulating granular discharging opening (10) is connected with the entrance of material returning valve (13), the outlet of material returning valve (13) is connected with the circulating granular charging aperture (14) of gas-solid oxidation reactor (17), the gas-solid mixture outlet (16) of gas-solid oxidation reactor (17) is connected with the entrance of gas-solid separator (20), the outlet of gas-solid separator (20) is connected with the entrance of gas-solid heat-exchanger rig (21), the outlet of gas-solid heat-exchanger rig (21), solid flow control valve (22) is connected with shell-and-tube thermal-arrest reactor (12) circulating granular charging aperture (9).
2. according to claim 1 based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, it is characterized in that, be provided with reactor heat exchanging pipe (26) in the described shell-and-tube thermal-arrest reactor (12), air distribution plate (25), on air distribution plate (25), be thick with qi-emitting hole (29), the metal oxide energy storage material is loaded in the shell of shell-and-tube thermal-arrest reactor (12), fuel enters in the shell-and-tube thermal-arrest reactor (12) and metal oxide energy storage material generation chemical reaction by air distribution plate (25), and the thermal-arrest fluid provides institute's calorific requirement by tubulation (26) for reaction;
Subsequently under the gravity effect of bed of material potential difference, the air generation oxidation reaction of solid material in material returning valve (13) enters gas-solid oxidation reactor (17) and after gas-solid heat-exchanger rig (21) heat exchange in the shell-and-tube thermal-arrest reactor (12); Oxidation reaction product separates through gas-solid separator (20), and the solid metal oxide energy storage material after the separation enters and participates in new round reaction in the shell-and-tube thermal-arrest reactor (12) by behind gas-solid heat-exchanger rig (21) preheated air.
3. according to claim 2ly it is characterized in that based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains,
When no solar energy or solar energy irradiation intensity deficiency, the interior chemical reaction of shell-and-tube thermal-arrest reactor (12) institute calorific requirement is provided by thermal-arrest backed up for flow storage tank (4), the outlet of line focus reinforcement thermal-collecting tube this moment (2) is connected with the import of thermal-arrest fluid regulation valve (3), the outlet of thermal-arrest fluid regulation valve (3) is connected with the entrance of thermal-arrest backed up for flow storage tank (4), the outlet of thermal-arrest backed up for flow storage tank (4) is connected with the import of the tubulation (26) of shell-and-tube thermal-arrest reactor (12), the outlet of the tubulation (26) of shell-and-tube thermal-arrest reactor (12) is connected with the entrance of compression pump (7), and the outlet of compression pump (7) is connected with the import that line focus is strengthened thermal-collecting tube (2).
4. according to claim 2 based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, it is characterized in that, when solar energy irradiation is sufficient, tubulation (26), compression pump (7) that described line focus is strengthened in thermal-collecting tube (2), the shell-and-tube thermal-arrest reactor (12) are connected successively, constitute thermal-arrest fluid flowloop.
5. according to claim 2 based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, it is characterized in that, under the situation of no solar energy or solar energy irradiation intensity deficiency, tubulation (26), compression pump (7) that line focus is strengthened in thermal-collecting tube (2), thermal-arrest fluid regulation valve (3), thermal-arrest backed up for flow storage tank (4), the shell-and-tube thermal-arrest reactor (12) are connected successively, constitute thermal-arrest fluid flowloop.
6. according to claim 1 based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, it is characterized in that, shell-and-tube thermal-arrest reactor (12), material returning valve (13), gas-solid oxidation reactor (17), gas-solid separator (20), gas-solid heat-exchanger rig (21), solid flow control valve (22) are connected successively, constitute the closed circuit of metal oxide energy storage material.
7. according to claim 1 based on temperature solar heat chemistry energy storage device in the indirect type of burning chemistry chains, it is characterized in that, fuel in the shell-and-tube thermal-arrest reactor (12) uses alternative fuel dimethyl ether, methyl alcohol or ethanol, and the carrier of oxygen is metal oxide cobalt oxide, iron oxide or nickel oxide.
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| CN111747379A (en) * | 2020-06-29 | 2020-10-09 | 东北大学 | Chemical chain continuous oxygen generation system and method based on solar photo-thermal |
| CN111747379B (en) * | 2020-06-29 | 2023-02-24 | 东北大学 | Chemical chain continuous oxygen generation system and method based on solar photo-thermal |
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Application publication date: 20130814 |