CN113091052B - A catalytic combustion pilot ignition device and method utilizing thermochemical heat storage - Google Patents
A catalytic combustion pilot ignition device and method utilizing thermochemical heat storage Download PDFInfo
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- 238000005338 heat storage Methods 0.000 title claims abstract description 159
- 238000007084 catalytic combustion reaction Methods 0.000 title claims abstract description 154
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 100
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- 239000000463 material Substances 0.000 claims description 23
- 239000000376 reactant Substances 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 19
- 239000000446 fuel Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 28
- 239000007789 gas Substances 0.000 description 14
- 229910019440 Mg(OH) Inorganic materials 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C13/00—Apparatus in which combustion takes place in the presence of catalytic material
- F23C13/02—Apparatus in which combustion takes place in the presence of catalytic material characterised by arrangements for starting the operation, e.g. for heating the catalytic material to operating temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/003—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using thermochemical reactions
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
Description
技术领域technical field
本发明涉及催化燃烧引燃启动领域,特别是一种利用热化学蓄热的催化燃烧引燃启动装置及方法。The invention relates to the field of catalytic combustion pilot ignition, in particular to a catalytic combustion pilot ignition device and method utilizing thermochemical heat storage.
背景技术Background technique
使用催化剂来提高燃烧效率和减少生成非目标产物的方法,通常被称为催化燃烧。催化燃烧是一种典型的气-固相催化反应,可以显著降低反应物分子的活化能,减少能源消耗,提高反应转化效率。催化燃烧是一种能耗低、效率高、环境友好的有机废弃物治理技术。此外,催化燃烧技术能够有效解决微尺度下气相燃烧不稳定和燃料燃烧不充分等问题。The use of catalysts to improve combustion efficiency and reduce the formation of undesired products is commonly referred to as catalytic combustion. Catalytic combustion is a typical gas-solid phase catalytic reaction, which can significantly reduce the activation energy of reactant molecules, reduce energy consumption, and improve reaction conversion efficiency. Catalytic combustion is an organic waste treatment technology with low energy consumption, high efficiency and environmental friendliness. In addition, catalytic combustion technology can effectively solve the problems of unstable gas phase combustion and insufficient fuel combustion at the microscale.
在催化燃烧装置中,启动催化燃烧反应的引燃方式主要包括高能点火、直接与催化剂反应引燃、预热来流气体引燃等。采用高能点火装置是较常见的引燃方式,但部分燃料催化燃烧的起燃温度较高,直接点火难以实现。此外,燃料中存在着大量易燃成分,遇到明火可能引起爆炸,直接采用高能点火对于气体催化燃烧是具有一定危险性的。直接与催化剂反应引燃是将燃料直接与催化剂进行反应,有时需要设置用于燃烧启动的催化剂。但对于起燃温度较高的燃料,此方法较难实现,而且较低的初始温度会大大延长催化燃烧启动时间。预热来流气体引燃方式通常采用电加热装置把来流气体加热到起燃温度之上,从而实现催化燃烧反应的自启动。但电加热方法通常只能实现小范围加热,不能同时对大量的气体进行加热,这可能会延长催化燃烧启动时间。此外,上述的几种催化燃烧启动方式对于点火源和加热源有较高的要求,而且增加了催化燃烧装置的复杂性,提高了能量的消耗,这就限制了催化燃烧技术的应用场合,降低了催化燃烧装置操作的便利性。因此,有必要开发更便捷、更高效的催化燃烧启动方式。In the catalytic combustion device, the ignition methods for starting the catalytic combustion reaction mainly include high-energy ignition, direct reaction with the catalyst, and preheating the incoming gas. Using a high-energy ignition device is a common ignition method, but the ignition temperature of the catalytic combustion of some fuels is high, and it is difficult to achieve direct ignition. In addition, there are a lot of flammable components in the fuel, which may cause an explosion when encountering an open flame. Directly using high-energy ignition is dangerous for gas catalytic combustion. The direct reaction with the catalyst for ignition is to directly react the fuel with the catalyst, and sometimes a catalyst for combustion initiation is required. However, for fuels with high light-off temperature, this method is difficult to achieve, and the lower initial temperature will greatly prolong the start-up time of catalytic combustion. The preheated incoming gas ignition method usually uses an electric heating device to heat the incoming gas above the light-off temperature, so as to realize the self-starting of the catalytic combustion reaction. However, the electric heating method can usually only achieve a small range of heating, and cannot heat a large amount of gas at the same time, which may prolong the start-up time of catalytic combustion. In addition, the above-mentioned several catalytic combustion starting methods have higher requirements for the ignition source and heating source, and increase the complexity of the catalytic combustion device and increase the energy consumption, which limits the application of catalytic combustion technology. The convenience of the operation of the catalytic combustion device is improved. Therefore, it is necessary to develop a more convenient and efficient catalytic combustion starting method.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于克服现有技术的不足,提供一种利用热化学蓄热的催化燃烧引燃启动装置及方法,不需要额外热源;有效的利用催化燃烧反应放热产生的余热;通过蓄热材料储存催化燃烧释放的部分能量,并将此能量用于下次催化燃烧启动引燃,以提高操作的便利性和能量利用效率。The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a catalytic combustion pilot ignition device and method utilizing thermochemical heat storage, which does not require an additional heat source; effectively utilizes the waste heat generated by the heat release of the catalytic combustion reaction; The material stores part of the energy released by the catalytic combustion, and uses this energy for the next catalytic combustion to start the ignition, so as to improve the convenience of operation and the efficiency of energy utilization.
本发明的目的是通过以下技术方案来实现的:The purpose of this invention is to realize through the following technical solutions:
一种利用热化学蓄热的催化燃烧引燃启动装置,包括热化学蓄热反应系统和催化燃烧化学反应系统,所述热化学蓄热反应系统中进行蓄热材料释放热量的化学反应生成热化学蓄热反应产物,所述催化燃烧化学反应系统吸收热化学蓄热反应系统中蓄热材料释放的热量进行催化燃烧引燃启动,所述催化燃烧化学反应系统中在催化燃烧引燃启动后进行催化燃烧释放热量,所述热化学蓄热反应系统中热化学蓄热反应产物吸收催化燃烧释放的热量重新分解生成蓄热材料从而实现热量的储存。A catalytic combustion ignition starting device utilizing thermochemical heat storage, comprising a thermochemical heat storage reaction system and a catalytic combustion chemical reaction system. The thermal storage reaction product, the catalytic combustion chemical reaction system absorbs the heat released by the thermal storage material in the thermochemical thermal storage reaction system to perform catalytic combustion pilot ignition, and in the catalytic combustion chemical reaction system, catalysis is performed after the catalytic combustion pilot ignition is started. The combustion releases heat, and the thermochemical heat storage reaction product in the thermochemical heat storage reaction system absorbs the heat released by the catalytic combustion and re-decomposes to generate a heat storage material, thereby realizing heat storage.
进一步,所述催化燃烧化学反应系统包括催化燃烧反应腔室,所述催化燃烧反应腔室内设有催化燃烧催化剂层,所述催化燃烧反应腔室设有进气口与出气口,所述进气口与出气口上分别设有进气口阀门与出气口阀门,所述催化燃烧化学反应系统部分或全部被热化学蓄热反应系统包围;Further, the catalytic combustion chemical reaction system includes a catalytic combustion reaction chamber, a catalytic combustion catalyst layer is arranged in the catalytic combustion reaction chamber, an air inlet and an air outlet are arranged in the catalytic combustion reaction chamber, and the air intake The inlet and the outlet are respectively provided with an inlet valve and an outlet valve, and the catalytic combustion chemical reaction system is partially or completely surrounded by a thermochemical heat storage reaction system;
所述热化学蓄热反应系统包括反应物储罐以及与反应物储罐连接的热化学蓄热反应腔室,所述反应物储罐与热化学蓄热反应腔室之间设有热化学蓄热反应工质进出口阀门,所述热化学蓄热反应腔室内设有热化学蓄热材料床层。The thermochemical thermal storage reaction system includes a reactant storage tank and a thermochemical thermal storage reaction chamber connected with the reactant storage tank, and a thermochemical thermal storage reaction chamber is provided between the reactant storage tank and the thermochemical thermal storage reaction chamber. The thermal reaction working medium inlet and outlet valves are provided with a thermochemical thermal storage material bed in the thermochemical thermal storage reaction chamber.
进一步,所述热化学蓄热反应腔室部分或全部包围催化燃烧反应腔室。Further, the thermochemical heat storage reaction chamber partially or completely surrounds the catalytic combustion reaction chamber.
进一步,所述热化学蓄热反应腔室与催化燃烧反应腔室的截面为同心圆结构。Further, the cross sections of the thermochemical heat storage reaction chamber and the catalytic combustion reaction chamber are concentric structures.
进一步,所述热化学蓄热材料床层和催化燃烧催化剂层均通过金属隔板进行固定。Further, both the thermochemical heat storage material bed and the catalytic combustion catalyst layer are fixed by metal separators.
一种利用热化学蓄热的催化燃烧引燃启动方法,包括以下步骤:A catalytic combustion pilot ignition method utilizing thermochemical heat storage, comprising the following steps:
S1:对蓄热材料进行释放热量的化学反应;S1: chemical reaction to release heat on the heat storage material;
S2:将蓄热材料释放的热量用于催化燃烧引燃启动;S2: The heat released by the heat storage material is used for catalytic combustion to start the ignition;
S3:催化燃烧引燃启动后进行催化燃烧释放热量,热化学蓄热反应产物吸收催化燃烧释放的热量重新分解生成蓄热材料从而实现热量的储存。S3: After the catalytic combustion is started, the catalytic combustion is carried out to release heat, and the thermochemical heat storage reaction product absorbs the heat released by the catalytic combustion and re-decomposes to generate a heat storage material to realize heat storage.
进一步,所述步骤S1包括以下子步骤:Further, the step S1 includes the following sub-steps:
S101:在热化学蓄热反应腔室的热化学蓄热材料床层放置蓄热材料;S101: placing a thermal storage material in the thermochemical thermal storage material bed of the thermochemical thermal storage reaction chamber;
S102:打开热化学蓄热反应工质进出口阀门,由反应物储罐向热化学蓄热反应腔室通入与蓄热材料反应的辅助材料,蓄热材料与通入的辅助材料发生合成反应生成热化学蓄热反应产物并释放热量。S102: Open the inlet and outlet valves of the thermochemical heat storage reaction working medium, and introduce the auxiliary material that reacts with the heat storage material from the reactant storage tank to the thermochemical heat storage reaction chamber, and the heat storage material reacts with the auxiliary material introduced into it. A thermochemical heat storage reaction product is generated and heat is released.
进一步,所述步骤S2包括以下子步骤:Further, the step S2 includes the following sub-steps:
S201:打开催化燃烧反应腔室的进气口阀门,通过进气口通入催化燃烧反应的燃料和空气预混气;S201: Open the air inlet valve of the catalytic combustion reaction chamber, and introduce the fuel and air premixed gas for the catalytic combustion reaction through the air inlet;
S202:通过蓄热材料释放的热量为燃料和空气预混气进行加热,为催化燃烧引燃启动进行供热。S202: Heat the fuel and air premixed by the heat released by the heat storage material, and provide heat for the catalytic combustion pilot ignition.
进一步,所述步骤S3包括以下子步骤:Further, the step S3 includes the following sub-steps:
S301:燃料和空气预混气进行催化燃烧反应并释放热量;S301: The fuel and air premixed gas undergoes catalytic combustion reaction and releases heat;
S302:催化燃烧释放的部分热量加热热化学蓄热反应产物重新分解生成蓄热材料从而实现热量的储存;S302: Part of the heat released by the catalytic combustion heats the thermochemical heat storage reaction product and re-decomposes to generate a heat storage material to store heat;
S303:热化学蓄热反应产物重新分解生成蓄热材料时还生成辅助材料,辅助材料回流到反应物储罐内储存,之后关闭热化学蓄热反应工质进出口阀门。S303: When the thermochemical heat storage reaction product is decomposed again to generate the heat storage material, auxiliary materials are also generated, and the auxiliary materials are returned to the reactant storage tank for storage, and then the inlet and outlet valves of the thermochemical heat storage reaction working fluid are closed.
本发明的有益效果是:The beneficial effects of the present invention are:
(1)不需要额外热源,适用于多种场合,使用条件方便快捷;(1) No additional heat source is required, suitable for various occasions, and the conditions of use are convenient and fast;
(2)可以有效的利用催化燃烧反应放热产生的余热;能够简明便捷的进行催化燃烧的引燃启动;(2) The waste heat generated by the exothermic reaction of the catalytic combustion reaction can be effectively utilized; the pilot ignition of the catalytic combustion can be carried out concisely and conveniently;
(3)通过蓄热材料储存催化燃烧释放的部分能量,并将此能量用于下次催化燃烧启动引燃,以提高操作的便利性和能量利用效率。(3) Part of the energy released by the catalytic combustion is stored by the heat storage material, and the energy is used for the next catalytic combustion to start the ignition, so as to improve the convenience of operation and the efficiency of energy utilization.
附图说明Description of drawings
图1为一种利用热化学蓄热的催化燃烧引燃启动装置的结构示意图;Fig. 1 is a kind of structural schematic diagram of the catalytic combustion pilot ignition starting device utilizing thermochemical heat storage;
图2为一种利用热化学蓄热的催化燃烧引燃启动装置的剖面图;2 is a cross-sectional view of a catalytic combustion pilot ignition device utilizing thermochemical heat storage;
图3为一种利用热化学蓄热的催化燃烧引燃启动装置的结构左视图;Fig. 3 is a kind of structural left side view of the catalytic combustion pilot ignition device utilizing thermochemical heat storage;
图4为一种利用热化学蓄热的催化燃烧引燃启动装置的结构右视图;Fig. 4 is a kind of structural right side view of the catalytic combustion pilot ignition starting device utilizing thermochemical heat storage;
图中标号说明:1、反应物储罐;2、热化学蓄热材料床层;3、热化学蓄热反应腔室;301、热化学蓄热反应工质进出口阀门;4、催化燃烧催化剂层;5、催化燃烧反应腔室;501、进气口阀门;502、出气口阀门;6、进气口;7、热化学蓄热反应工质进出口;8、金属隔板;9、出气口。Description of the numbers in the figure: 1. Reactant storage tank; 2. Thermochemical heat storage material bed; 3. Thermochemical heat storage reaction chamber; 301. Thermochemical heat storage reaction working fluid inlet and outlet valve; 4. Catalytic combustion catalyst layer; 5, catalytic combustion reaction chamber; 501, inlet valve; 502, outlet valve; 6, inlet; 7, inlet and outlet of thermochemical regenerative reaction working medium; 8, metal partition; 9, outlet breath.
具体实施方式Detailed ways
以下通过特定的具体实例说明本发明的实施方式,本领域技术人员可由本说明书所揭露的内容轻易地了解本发明的其他优点与功效。本发明还可以通过另外不同的具体实施方式加以实施或应用,本说明书中的各项细节也可以基于不同观点与应用,在没有背离本发明的精神下进行各种修饰或改变。需说明的是,在不冲突的情况下,以下实施例及实施例中的特征可以相互组合。The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict.
需要说明的是,以下实施例中所提供的图示仅以示意方式说明本发明的基本构想,遂图式中仅显示与本发明中有关的组件而非按照实际实施时的组件数目、形状及尺寸绘制,其实际实施时各组件的型态、数量及比例可为一种随意的改变,且其组件布局型态也可能更为复杂。It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic way, so the drawings only show the components related to the present invention rather than the number, shape and number of components in actual implementation. For dimension drawing, the type, quantity and proportion of each component can be changed at will in actual implementation, and the component layout may also be more complicated.
实施例一:Example 1:
如图1至图4所示,一种利用热化学蓄热的催化燃烧引燃启动装置,包括热化学蓄热反应系统和催化燃烧化学反应系统,所述热化学蓄热反应系统中进行蓄热材料释放热量的化学反应生成热化学蓄热反应产物,所述催化燃烧化学反应系统吸收热化学蓄热反应系统中蓄热材料释放的热量进行催化燃烧引燃启动,所述催化燃烧化学反应系统中在催化燃烧引燃启动后进行催化燃烧释放热量,所述热化学蓄热反应系统中热化学蓄热反应产物吸收催化燃烧释放的热量重新分解生成蓄热材料从而实现热量的储存。As shown in FIG. 1 to FIG. 4 , a catalytic combustion pilot ignition device utilizing thermochemical heat storage includes a thermochemical heat storage reaction system and a catalytic combustion chemical reaction system, in which heat storage is performed in the thermochemical heat storage reaction system The chemical reaction of the material releasing heat generates a thermochemical heat storage reaction product, and the catalytic combustion chemical reaction system absorbs the heat released by the heat storage material in the thermochemical heat storage reaction system to perform catalytic combustion pilot ignition. After the catalytic combustion is started, the catalytic combustion is carried out to release heat, and the thermochemical heat storage reaction product in the thermochemical heat storage reaction system absorbs the heat released by the catalytic combustion and decomposes again to generate a heat storage material to realize heat storage.
所述催化燃烧化学反应系统包括催化燃烧反应腔室5,所述催化燃烧反应腔室5内设有催化燃烧催化剂层4,所述催化燃烧反应腔室5设有进气口6与出气口9,所述进气口6与出气口9上分别设有进气口阀门501与出气口阀门502,所述催化燃烧化学反应系统部分或全部被热化学蓄热反应系统包围;The catalytic combustion chemical reaction system includes a catalytic
所述催化燃烧催化剂层4上设有催化剂,催化剂为负载型铂催化剂;The catalytic
所述热化学蓄热反应系统包括反应物储罐1以及通过连接管路与反应物储罐1连接的热化学蓄热反应腔室3,所述反应物储罐1与热化学蓄热反应腔室3之间设有热化学蓄热反应工质进出口阀门301,所述热化学蓄热反应腔室3内设有热化学蓄热材料床层2。The thermochemical thermal storage reaction system includes a reactant storage tank 1 and a thermochemical thermal
热化学蓄热反应腔室3设有热化学蓄热反应工质进出口7,热化学蓄热反应工质进出口7通过连接管路与反应物储罐1连接,热化学蓄热反应工质进出口7设热化学蓄热反应工质进出口阀门301。The thermochemical heat
所述热化学蓄热材料床层2上放置蓄热材料。A thermal storage material is placed on the bed 2 of the thermochemical thermal storage material.
所述反应物储罐1中设有与蓄热材料反应的辅助材料,辅助材料为H2O。The reactant storage tank 1 is provided with an auxiliary material for reacting with the heat storage material, and the auxiliary material is H 2 O.
所述蓄热材料为MgO。The heat storage material is MgO.
所述热化学蓄热反应腔室3以环状结构部分或全部包围催化燃烧反应腔室5。The thermochemical heat
所述热化学蓄热反应腔室3与催化燃烧反应腔室5的截面为同心圆结构。The cross sections of the thermochemical heat
所述热化学蓄热材料床层2和催化燃烧催化剂层4均通过金属隔板8进行固定。Both the thermochemical heat storage material bed layer 2 and the catalytic
一种利用热化学蓄热的催化燃烧引燃启动方法,包括以下步骤:A catalytic combustion pilot ignition method utilizing thermochemical heat storage, comprising the following steps:
S1:对蓄热材料进行释放热量的化学反应;S1: chemical reaction to release heat on the heat storage material;
S101:在热化学蓄热反应腔室3的热化学蓄热材料床层2放置蓄热材料;S101: placing a thermal storage material in the thermochemical thermal storage material bed 2 of the thermochemical thermal
所述蓄热材料为MgO。The heat storage material is MgO.
S102:打开热化学蓄热反应工质进出口阀门301,由反应物储罐1向热化学蓄热反应腔室3通入与蓄热材料反应的辅助材料,蓄热材料与通入的辅助材料发生合成反应生成热化学蓄热反应产物并释放热量;S102: Open the inlet and
辅助材料为气体或蒸气;辅助材料为H2O;The auxiliary material is gas or vapor; the auxiliary material is H 2 O;
利用低温热源加热反应物储罐1内的H2O,使得H2O气化从热化学蓄热反应工质进出口7进入,H2O蒸气与热化学蓄热材料床层2上的蓄热材料MgO充分反应,放出大量的热,并生成热化学蓄热反应产物Mg(OH)2。温度上升至高于乙醇沸点50~80℃,即120~160℃(乙醇沸点约为78.4℃),进行下一步(步骤S2)操作。The H 2 O in the reactant storage tank 1 is heated by a low-temperature heat source, so that the H 2 O gasification enters from the inlet and
S2:将蓄热材料释放的热量用于催化燃烧引燃启动;S2: The heat released by the heat storage material is used for catalytic combustion to start the ignition;
S201:打开催化燃烧反应腔室5的进气口阀门501,通过进气口6通入催化燃烧反应的燃料乙醇和空气预混气;S201: Open the
S202:通过蓄热材料释放的热量为燃料乙醇和空气预混气进行加热,为催化燃烧引燃启动进行供热;S202: heating the fuel ethanol and the air premixed by the heat released by the heat storage material, and supplying heat for the catalytic combustion pilot ignition;
蓄热材料MgO与H2O蒸气反应放出的热量进入催化燃烧反应腔室5,在催化燃烧催化剂层4上将催化燃烧反应温度提升至启动温度,乙醇发生催化燃烧反应;The heat released by the reaction between the heat storage material MgO and the H 2 O vapor enters the catalytic
S3:催化燃烧引燃启动后进行催化燃烧释放热量,热化学蓄热反应产物吸收催化燃烧释放的热量重新分解生成蓄热材料从而实现热量的储存;S3: After the catalytic combustion is started, the catalytic combustion is carried out to release heat, and the thermochemical heat storage reaction product absorbs the heat released by the catalytic combustion and decomposes again to form a heat storage material to realize heat storage;
S301:燃料乙醇和空气预混气在催化燃烧催化剂层4进行催化燃烧反应并释放自身反应热量;S301: The fuel ethanol and the air premixed gas undergo a catalytic combustion reaction in the catalytic
S302:催化燃烧释放的部分热量维持催化燃烧自身反应温度,另一部分热量进入热化学蓄热反应腔室3加热热化学蓄热反应产物重新分解生成蓄热材料从而实现热量的储存。S302: Part of the heat released by the catalytic combustion maintains the reaction temperature of the catalytic combustion itself, and another part of the heat enters the thermochemical heat
S303:热化学蓄热反应产物重新分解生成蓄热材料时还生成辅助材料,辅助材料回流到反应物储罐1内以气态或液态形式储存,之后关闭热化学蓄热反应工质进出口阀门301。S303: When the thermochemical heat storage reaction product is re-decomposed to generate a heat storage material, an auxiliary material is also generated, and the auxiliary material is returned to the reactant storage tank 1 for storage in a gaseous or liquid form, and then the thermochemical heat storage reaction working fluid inlet and
乙醇催化燃烧反应生成的净化气CO2和气态H2O通过出气口9排出。The purified gas CO 2 and gaseous H 2 O generated by the catalytic combustion reaction of ethanol are discharged through the
乙醇催化燃烧反应产生的温度达到350℃及以上时,热量一部分留在催化燃烧反应腔室5保持反应自身的催化燃烧反应温度,另一部分热量重新传递到热化学蓄热反应腔室3中,热化学蓄热反应腔室3中的热化学蓄热反应产物Mg(OH)2反应重新生成蓄热材料MgO和H2O蒸气,Mg(OH)2的分解温度约为350℃,H2O蒸气从热化学蓄热反应工质进出口7排回反应物储罐1内被冷凝储存。When the temperature generated by the catalytic combustion reaction of ethanol reaches 350°C and above, a part of the heat remains in the catalytic
通过蓄热材料MgO的水合反应生成热化学蓄热反应产物Mg(OH)2的热化学反应释放的热量实现乙醇催化燃烧引燃启动,利用乙醇催化燃烧产热使得热化学蓄热反应产物Mg(OH)2发生反应产生蓄热材料MgO进行储热。The hydration reaction of the heat storage material MgO generates the heat released by the thermochemical reaction of the thermochemical heat storage reaction product Mg(OH) 2 to realize the ignition of ethanol catalytic combustion, and the use of the catalytic combustion of ethanol to generate heat makes the thermochemical heat storage reaction product Mg ( OH) 2 reacts to generate heat storage material MgO for heat storage.
MgO/Mg(OH)2热化学蓄热反应系统基于Mg(OH)2的分解反应,具有较高的储热密度,能够达到380kWh/m3的储热密度,Mg(OH)2的分解温度约为350℃。The MgO/Mg(OH) 2 thermochemical heat storage reaction system is based on the decomposition reaction of Mg(OH) 2 and has a high heat storage density, which can reach a heat storage density of 380kWh/m 3 , and the decomposition temperature of Mg(OH) 2 about 350°C.
乙醇沸点约为78.4℃,在负载型铂催化剂作用下,乙醇在温度达到约120℃开始燃烧,最终燃烧稳定温度达到450℃以上。The boiling point of ethanol is about 78.4 °C. Under the action of the supported platinum catalyst, ethanol starts to burn when the temperature reaches about 120 °C, and the final combustion stability temperature reaches above 450 °C.
蓄热材料MgO和H2O蒸汽进行的水合反应能够放出大量的热,这部分热量将乙醇催化燃烧反应腔室5内的温度提升到催化燃烧反应启动温度,达到催化燃烧反应启动的目的。同时乙醇催化燃烧反应产热一部分用于自身催化燃烧反应,另一部分热量进入热化学蓄热反应腔室3,使得Mg(OH)2发生分解反应,吸收足够热量重新得到蓄热材料MgO和气态H2O,达到储能的目的。The hydration reaction of the heat storage material MgO and H 2 O steam can release a lot of heat, and this part of the heat raises the temperature in the ethanol catalytic
一种利用热化学蓄热的催化燃烧引燃启动装置及其方法,不需要额外热源,适用于多种场合,使用条件方便快捷;可以有效的利用催化燃烧反应放热产生的余热;能够简明便捷的进行催化燃烧的引燃启动;直接吸收催化燃烧反应放热,系统由容积式装置组成,在蓄热过程中,热阻小,热量损失小,能量利用率高;通过蓄热材料储存催化燃烧释放的部分能量,并将此能量用于下次催化燃烧启动引燃,以提高操作的便利性和能量利用效率。A catalytic combustion ignition starting device utilizing thermochemical heat storage and a method thereof do not require additional heat sources, are suitable for various occasions, and have convenient and quick use conditions; can effectively utilize the waste heat generated by the exothermic reaction of catalytic combustion; can be concise and convenient The system is composed of volumetric devices. During the heat storage process, the thermal resistance is small, the heat loss is small, and the energy utilization rate is high; the catalytic combustion is stored through the heat storage material. The released part of the energy is used for the next catalytic combustion to start the ignition, so as to improve the convenience of operation and the efficiency of energy utilization.
催化燃烧反应放出大量的热量,通过蓄热材料将部分热量进行储存,在下一次催化燃烧启动时把蓄热材料储存的热量释放出来对燃料和气体进行预热,从而达到催化燃烧引燃启动的目的。The catalytic combustion reaction releases a large amount of heat, and part of the heat is stored by the regenerative material. When the next catalytic combustion starts, the heat stored in the regenerative material is released to preheat the fuel and gas, so as to achieve the purpose of catalytic combustion pilot ignition. .
催化燃烧产热的储存采用气固热化学蓄热技术。热化学蓄热技术基于可逆热化学反应,具有储能密度高和不需要保温等优点。在吸收热量时,发生分解反应,产物分离储存;需要热量时,发生合成反应释放热量,从而达到热能的储存和释放的目的。The storage of heat produced by catalytic combustion adopts gas-solid thermal chemical heat storage technology. Thermochemical heat storage technology is based on reversible thermochemical reactions and has the advantages of high energy storage density and no need for thermal insulation. When heat is absorbed, a decomposition reaction occurs, and the products are separated and stored; when heat is needed, a synthesis reaction occurs to release heat, so as to achieve the purpose of storage and release of heat energy.
以上所述实施例仅表达了本发明的具体实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。The above-mentioned embodiments only represent specific embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention.
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