CN115178200B - Laser heating microreactor and heating method - Google Patents
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 49
- 238000004093 laser heating Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000012530 fluid Substances 0.000 claims abstract description 58
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 239000011159 matrix material Substances 0.000 claims abstract description 15
- -1 rare earth ions Chemical class 0.000 claims abstract description 10
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 4
- 229910001428 transition metal ion Inorganic materials 0.000 claims abstract description 4
- 239000002223 garnet Substances 0.000 claims description 25
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 14
- 229910052733 gallium Inorganic materials 0.000 claims description 14
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 claims description 10
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 claims description 10
- 229910052771 Terbium Inorganic materials 0.000 claims description 7
- FNCIDSNKNZQJTJ-UHFFFAOYSA-N alumane;terbium Chemical compound [AlH3].[Tb] FNCIDSNKNZQJTJ-UHFFFAOYSA-N 0.000 claims description 7
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 7
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 claims description 7
- 229910001195 gallium oxide Inorganic materials 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052596 spinel Inorganic materials 0.000 claims description 7
- 239000011029 spinel Substances 0.000 claims description 7
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 claims description 7
- 229910052727 yttrium Inorganic materials 0.000 claims description 7
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 7
- 239000011224 oxide ceramic Substances 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000002086 nanomaterial Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 2
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 2
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0093—Microreactors, e.g. miniaturised or microfabricated reactors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00139—Controlling the temperature using electromagnetic heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00788—Three-dimensional assemblies, i.e. the reactor comprising a form other than a stack of plates
- B01J2219/00792—One or more tube-shaped elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00819—Materials of construction
- B01J2219/00824—Ceramic
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00873—Heat exchange
- B01J2219/00882—Electromagnetic heating
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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Abstract
Description
技术领域Technical Field
本发明属于微反应器技术领域，尤其涉及一种激光加热微反应器及加热方法。The invention belongs to the technical field of microreactors, and in particular relates to a laser heating microreactor and a heating method.
背景技术Background technique
微反应器具有丰富的微米尺寸通道，其应用于化工合成，具有设备微型化，过程集成化、安全性高、生产灵活的特点。目前微反应器的材质主要有玻璃、碳化硅陶瓷和不锈钢，玻璃具有良好的透明性但是其耐腐蚀性能较差，碳化硅陶瓷具有强耐腐蚀性能但是其不具有透明性，无法全方位的观察反应过程，不锈钢材料不透明且耐腐蚀性能差。综上，现有的微反应器基材不能承受1000℃以上高温，对于例如化工合成纳米材料等工艺无法实现高温精准加热。Microreactors have abundant micron-sized channels. They are used in chemical synthesis and have the characteristics of equipment miniaturization, process integration, high safety, and flexible production. At present, the materials of microreactors are mainly glass, silicon carbide ceramics and stainless steel. Glass has good transparency but poor corrosion resistance. Silicon carbide ceramics have strong corrosion resistance but are not transparent and cannot fully observe the reaction process. Stainless steel is opaque and has poor corrosion resistance. In summary, the existing microreactor substrates cannot withstand temperatures above 1000°C, and high-temperature precision heating cannot be achieved for processes such as chemical synthesis of nanomaterials.
发明内容Summary of the invention
本发明目的在于提供一种激光加热微反应器及加热方法，以解决上述的技术问题。The present invention aims to provide a laser-heated microreactor and a heating method to solve the above-mentioned technical problems.
为解决上述技术问题，本发明的一种激光加热微反应器及加热方法的具体技术方案如下：In order to solve the above technical problems, the specific technical solutions of a laser heating microreactor and a heating method of the present invention are as follows:
一种激光加热微反应器，包括基体，基体内具有微通道，基体两侧分别具有流体入口和流体出口，微通道与流体入口和流体出口相连，流体通过流体入口进入微通道，通过流体出口流出，所述基体由透明陶瓷材料制成，所述微反应器包括激光加热系统，所述激光加热系统包括激光器，所述激光器发射激光到微反应器内，对加热位点的流体进行加热，所述加热位点为中空球形结构。A laser heating microreactor comprises a substrate, a microchannel is provided in the substrate, a fluid inlet and a fluid outlet are respectively provided on both sides of the substrate, the microchannel is connected to the fluid inlet and the fluid outlet, the fluid enters the microchannel through the fluid inlet and flows out through the fluid outlet, the substrate is made of a transparent ceramic material, the microreactor comprises a laser heating system, the laser heating system comprises a laser, the laser emits laser into the microreactor to heat the fluid at the heating site, the heating site is a hollow spherical structure.
进一步的，所述中空球形结构的直径为微通道平均管径的2-5倍。Furthermore, the diameter of the hollow spherical structure is 2-5 times the average diameter of the microchannel.
进一步的，所述激光器发射激光直接作用在微通道上的加热位点对微通道内的流体进行加热。Furthermore, the laser emits laser light to directly act on a heating point on the microchannel to heat the fluid in the microchannel.
进一步的，所述激光器发射的激光激发透明陶瓷微反应器基体，基体中掺杂的稀土离子或过渡金属离子吸收激光后产生热量，通过热传导对微通道内加热位点的流体进行加热。Furthermore, the laser emitted by the laser excites the transparent ceramic microreactor matrix, and the rare earth ions or transition metal ions doped in the matrix absorb the laser to generate heat, thereby heating the fluid at the heating point in the microchannel through heat conduction.
进一步的，所述透明陶瓷材料为钇铝石榴石、钇镓石榴石、铽铝石榴石、铽镓石榴石、镁铝尖晶石、氧化铝、氧化钇、氧化镓陶瓷中的一种或两种。Furthermore, the transparent ceramic material is one or two of yttrium aluminum garnet, yttrium gallium garnet, terbium aluminum garnet, terbium gallium garnet, magnesium aluminum spinel, aluminum oxide, yttrium oxide, and gallium oxide ceramics.
进一步的，所述激光器位置可调。Furthermore, the position of the laser is adjustable.
一种激光加热微反应器的激光加热方法，包括如下步骤：A laser heating method for a laser-heated microreactor comprises the following steps:
步骤1：选取钇铝石榴石、钇镓石榴石、铽铝石榴石、铽镓石榴石、镁铝尖晶石、氧化铝、氧化钇、氧化镓陶瓷中的一种或两种，作为微反应器的基体材料，制备微反应器；Step 1: selecting one or two of yttrium aluminum garnet, yttrium gallium garnet, terbium aluminum garnet, terbium gallium garnet, magnesium aluminum spinel, aluminum oxide, yttrium oxide, and gallium oxide ceramics as the base material of the microreactor to prepare the microreactor;
步骤2：激光器采用980nm的150mW半导体激光器；Step 2: The laser uses a 150mW semiconductor laser at 980nm;
步骤3：激光被微通道内加热位点处的流体所吸收，直接加热流体。Step 3: The laser is absorbed by the fluid at the heating site in the microchannel, directly heating the fluid.
一种激光加热微反应器的激光加热方法，包括如下步骤：A laser heating method for a laser-heated microreactor comprises the following steps:
步骤1：选取钇铝石榴石、钇镓石榴石、铽铝石榴石、铽镓石榴石、镁铝尖晶石、氧化铝、氧化钇、氧化镓陶瓷中的一种或两种，并在选取的陶瓷材料内部掺杂铈离子，作为微反应器的基体材料，制备铈掺杂微反应器；步骤2：激光器采用450nm的150mW半导体激光器；Step 1: Select one or two of yttrium aluminum garnet, yttrium gallium garnet, terbium aluminum garnet, terbium gallium garnet, magnesium aluminum spinel, aluminum oxide, yttrium oxide, and gallium oxide ceramics, and dope cerium ions inside the selected ceramic material as the matrix material of the microreactor to prepare a cerium-doped microreactor; Step 2: The laser adopts a 450nm 150mW semiconductor laser;
步骤3：铈掺杂镥铝石榴石微反应器吸收450nm的激光，并将450nm的激光转换为530nm的荧光，同时转换过程中的能量亏损以热能形式释放并以最短路径传导至加热位点，530nm荧光与热能传导路径一致到达加热位点，被流体所吸收，光能转换为热能，实现加热。Step 3: The cerium-doped lutetium aluminum garnet microreactor absorbs 450nm laser light and converts the 450nm laser light into 530nm fluorescence. At the same time, the energy loss in the conversion process is released in the form of heat energy and conducted to the heating site via the shortest path. The 530nm fluorescence reaches the heating site in the same way as the heat energy conduction path and is absorbed by the fluid. The light energy is converted into heat energy to achieve heating.
本发明的一种激光加热微反应器及加热方法具有以下优点：A laser heating microreactor and a heating method of the present invention have the following advantages:
1）本发明的激光加热微反应器，采用透明陶瓷作为微反应器的基体材料，透明陶瓷具有高的透过率以及耐腐蚀性能好，可满足高温高压以及腐蚀条件下的纳米材料化工合成。1) The laser heating microreactor of the present invention adopts transparent ceramic as the base material of the microreactor. Transparent ceramic has high transmittance and good corrosion resistance, and can meet the requirements of chemical synthesis of nanomaterials under high temperature, high pressure and corrosion conditions.
2）本发明的激光加热微反应器的激光加热方法可实现对微反应器内流体的瞬间升温以及加热温度可达1000℃以上，同时光斑小的激光可实现对微反应器内特定流体精准控温。2) The laser heating method of the laser-heated microreactor of the present invention can achieve instantaneous heating of the fluid in the microreactor and the heating temperature can reach above 1000°C. At the same time, the laser with a small spot can achieve precise temperature control of a specific fluid in the microreactor.
3）本发明的激光加热微反应器用于化工合成，其原料用量少，成本低，安全性能高，可用于模拟有毒有害物质的化工合成过程。3) The laser heating microreactor of the present invention is used for chemical synthesis, with small amount of raw materials, low cost and high safety performance, and can be used to simulate the chemical synthesis process of toxic and harmful substances.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明的激光加热微反应器结构示意图；FIG1 is a schematic diagram of the structure of a laser-heated microreactor according to the present invention;
图2为本发明的激光加热微反应器的微通道中空球形结构示意图；FIG2 is a schematic diagram of a hollow spherical structure of a microchannel of a laser-heated microreactor of the present invention;
图中标记说明：11、流体入口；12、透明陶瓷基体；13、微通道；14、流体出口；15、激光器；16、加热位点；17、激光。Explanation of the markings in the figure: 11, fluid inlet; 12, transparent ceramic substrate; 13, microchannel; 14, fluid outlet; 15, laser; 16, heating site; 17, laser.
具体实施方式Detailed ways
为了更好地了解本发明的目的、结构及功能，下面结合附图，对本发明一种激光加热微反应器及加热方法做进一步详细的描述。In order to better understand the purpose, structure and function of the present invention, a laser heating microreactor and a heating method of the present invention are further described in detail below in conjunction with the accompanying drawings.
如图1所示，本发明的一种激光加热微反应器，包括基体12，基体12由透明陶瓷材料制成，透明陶瓷材料为钇铝石榴石、钇镓石榴石、铽铝石榴石、铽镓石榴石、镁铝尖晶石、氧化铝、氧化钇、氧化镓等陶瓷中的一种或两种。基体12内具有微通道13，基体12两侧分别具有流体入口11和流体出口14，微通道13与流体入口11和流体出口14相连，流体通过流体入口11进入微通道13，通过流体出口14流出。本发明的激光加热微反应器搭载激光加热系统，激光加热系统包括激光器15，透明陶瓷基体不吸收可见光与近红外光，激光器15发射激光17直接作用在微通道13上的加热位点16对微反应器的特定位置进行精准加热，实现瞬间升温。激光器15位置可调，可实现对于微反应器中的微通道13的不同位置进行加热。本发明的激光加热反应器整体为透明，可从任意角度全方位观察反应物的合成过程。且透明陶瓷基体具有高的热导率以及抗热冲击性能，耐酸碱腐蚀，耐冷热循环，可承受温度范围为-40℃—1500℃。可应用于高温高压条件下的纳米材料合成，微反应器在制备纳米材料时可采用超声振动，防止纳米材料黏附在微反应器通道上，堵塞反应通道。使用完可通过酸碱或丙酮浸泡与超声清洗以及高温灼烧等方法进行回收清洁与再利用。As shown in FIG1 , a laser heating microreactor of the present invention comprises a substrate 12, which is made of a transparent ceramic material, and the transparent ceramic material is one or two of ceramics such as yttrium aluminum garnet, yttrium gallium garnet, terbium aluminum garnet, terbium gallium garnet, magnesium aluminum spinel, aluminum oxide, yttrium oxide, and gallium oxide. A microchannel 13 is provided in the substrate 12, and a fluid inlet 11 and a fluid outlet 14 are provided on both sides of the substrate 12, respectively. The microchannel 13 is connected to the fluid inlet 11 and the fluid outlet 14, and the fluid enters the microchannel 13 through the fluid inlet 11 and flows out through the fluid outlet 14. The laser heating microreactor of the present invention is equipped with a laser heating system, and the laser heating system comprises a laser 15. The transparent ceramic substrate does not absorb visible light and near-infrared light. The laser 15 emits a laser 17 to directly act on the heating site 16 on the microchannel 13 to precisely heat the specific position of the microreactor, thereby achieving instantaneous heating. The position of the laser 15 is adjustable, and heating of different positions of the microchannel 13 in the microreactor can be achieved. The laser heating reactor of the present invention is transparent as a whole, and the synthesis process of the reactants can be observed from any angle. The transparent ceramic matrix has high thermal conductivity and thermal shock resistance, acid and alkali corrosion resistance, and cold and hot cycle resistance, and can withstand a temperature range of -40°C to 1500°C. It can be applied to the synthesis of nanomaterials under high temperature and high pressure conditions. The microreactor can use ultrasonic vibration when preparing nanomaterials to prevent nanomaterials from adhering to the microreactor channel and blocking the reaction channel. After use, it can be recycled, cleaned and reused by acid, alkali or acetone soaking, ultrasonic cleaning, and high-temperature burning.
本发明激光加热方法具有两种加热模式：第一、激光透过透明陶瓷微反应器基体直接作用于微反应器的微通道内流体，流体吸收激光后实现加热；第二、激光激发透明陶瓷微反应器基体，基体中掺杂的稀土离子或过渡金属离子吸收激光后产生热量，热传导加热微通道内特定位置的流体。激光激发加热过程中，两种加热模式可选择一种或者两种加热模式组合使用。The laser heating method of the present invention has two heating modes: first, the laser directly acts on the fluid in the microchannel of the microreactor through the transparent ceramic microreactor matrix, and the fluid is heated after absorbing the laser; second, the laser excites the transparent ceramic microreactor matrix, and the rare earth ions or transition metal ions doped in the matrix absorb the laser to generate heat, and the heat conduction heats the fluid at a specific position in the microchannel. During the laser excitation heating process, one of the two heating modes can be selected or the two heating modes can be used in combination.
下面通过实施例介绍本发明的微流控激光加热方法。The microfluidic laser heating method of the present invention is described below by way of examples.
实施例1：Embodiment 1:
步骤1：采用钇铝石榴石透明陶瓷作为微反应器基体材料，制备钇铝石榴石微反应器；Step 1: using yttrium aluminum garnet transparent ceramic as a microreactor matrix material to prepare a yttrium aluminum garnet microreactor;
步骤2：激光器15采用980nm的150mW半导体激光器；Step 2: The laser 15 uses a 150mW semiconductor laser at 980nm;
步骤3：因钇铝石榴石透明陶瓷不吸收980nm的激光，激光16被微通道13内加热位点16处的流体所吸收，直接加热流体。因微通道13内加热位点16的流体气化会产生瞬时压力，为了流体气化产生的瞬时压力与微通道13可承受压力值进行匹配，如图2所示，我们将微通道13的光加热位点16设计为中空球形结构，中空球形结构使得加热流体气化过程中能够有效泄压，保障微反应器的压力安全。经计算，中空球形结构的直径为微通道13平均管径的2-5倍。Step 3: Since yttrium aluminum garnet transparent ceramic does not absorb 980nm laser, laser 16 is absorbed by the fluid at the heating site 16 in the microchannel 13, and the fluid is directly heated. Since the fluid vaporization at the heating site 16 in the microchannel 13 will generate instantaneous pressure, in order to match the instantaneous pressure generated by the fluid vaporization with the pressure value that the microchannel 13 can withstand, as shown in FIG2 , we design the optical heating site 16 of the microchannel 13 as a hollow spherical structure. The hollow spherical structure enables effective pressure relief during the vaporization process of the heated fluid, ensuring the pressure safety of the microreactor. According to calculations, the diameter of the hollow spherical structure is 2-5 times the average diameter of the microchannel 13.
实施例2：Embodiment 2:
步骤1：采用铈掺杂镥铝石榴石透明陶瓷作为微反应器基体材料，制备铈掺杂镥铝石榴石微反应器；Step 1: using cerium-doped lutetium aluminum garnet transparent ceramic as a microreactor matrix material to prepare a cerium-doped lutetium aluminum garnet microreactor;
步骤2：激光器15采用450nm的150mW半导体激光器；Step 2: The laser 15 uses a 150mW semiconductor laser with a wavelength of 450nm;
步骤3：因流体不吸收450nm激光，而铈掺杂镥铝石榴石微反应器吸收450nm的激光，并将450nm的激光转换为530nm的荧光，同时转换过程中的能量亏损以热能形式释放并以最短路径传导至加热位点16，530nm荧光与热能传导路径一致到达加热位点16，被流体所吸收，光能转换为热能，实现加热。为了流体气化产生的瞬时压力与微通道13可承受压力值进行匹配，微通道内中空球形结构的设计与实施例1相同。Step 3: Since the fluid does not absorb the 450nm laser, the cerium-doped lutetium aluminum garnet microreactor absorbs the 450nm laser and converts the 450nm laser into 530nm fluorescence. At the same time, the energy loss in the conversion process is released in the form of heat energy and conducted to the heating site 16 in the shortest path. The 530nm fluorescence reaches the heating site 16 in the same way as the heat energy conduction path, is absorbed by the fluid, and the light energy is converted into heat energy to achieve heating. In order to match the instantaneous pressure generated by the gasification of the fluid with the pressure value that the microchannel 13 can withstand, the design of the hollow spherical structure in the microchannel is the same as that in Example 1.
本发明可以根据实际需要灵活选择透明陶瓷基体材料，选择不同的激光加热方式，应用于不同的微流控合成工艺，具有加热精准、快速，耐高温的优点。The present invention can flexibly select transparent ceramic matrix materials according to actual needs, select different laser heating methods, and be applied to different microfluidic synthesis processes, and has the advantages of precise and rapid heating and high temperature resistance.
可以理解，本发明是通过一些实施例进行描述的，本领域技术人员知悉的，在不脱离本发明的精神和范围的情况下，可以对这些特征和实施例进行各种改变或等效替换。另外，在本发明的教导下，可以对这些特征和实施例进行修改以适应具体的情况及材料而不会脱离本发明的精神和范围。因此，本发明不受此处所公开的具体实施例的限制，所有落入本申请的权利要求范围内的实施例都属于本发明所保护的范围内。It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.
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