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Photo-thermal composite catalytic multifunctional reaction system and operation method and application thereof

A reaction system, multifunctional technology, applied in chemical instruments and methods, chemical/physical/physical chemical processes of energy application, energy input, etc., can solve the problems of sudden system shutdown, reduced conversion rate, single function, etc. The effect of controlling the dispersion of the light source and improving the accuracy

Pending Publication Date: 2022-07-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, most laboratory photothermal composite catalytic reaction system innovations usually only focus on specific fuel conversion. Existing systems often have fixed structures and single functions, and few can meet the needs of synthesis, testing and analysis of multiple carbon-based fuel systems at the same time. Integrated comprehensive reaction system platform
In the prior art, in order to solve the problems in the solar methanol reforming hydrogen production reaction system due to the intermittent fluctuation of solar radiation, the conversion rate of the thermochemical reactor is reduced, the catalyst is sintered and deactivated at high temperature, and the system is suddenly shut down. Crystalline nitrate transforms the tubular reactor (Ma Chao et al. Tsinghua University Journal. 2021, 25, 002); CN105220172A discloses a tubular structure that directly converts a mixture of carbon dioxide and water vapor into methane-rich gas and its The preparation method and application, so as to realize the two processes of high-temperature carbon dioxide and water vapor co-electrolysis and low-temperature methanation catalysis in one system; At present, many designs have been carried out in order to improve the performance of the reactor in the solar methane dry reforming reaction, the most common one is Cavity reactors, membrane reactors, rotary reactors, fluidized bed reactors and some other novel reactors can better match the solar flux distribution and reduce heat loss (Liu Yanshuo et al. Progress in Chemical Industry. 2019, 38, 12)
Obviously, these modifications have the limitation that they can only solve specific photothermal catalytic conversion problems, and whether they are generally applicable to more reaction systems remains to be discussed.

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  • Photo-thermal composite catalytic multifunctional reaction system and operation method and application thereof
  • Photo-thermal composite catalytic multifunctional reaction system and operation method and application thereof
  • Photo-thermal composite catalytic multifunctional reaction system and operation method and application thereof

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Effect test

Embodiment 1

[0025] like figure 1 Described is a photothermal composite catalytic multi-functional reaction system provided by the present invention, including a feeding gas path module (gas cylinder, safety valve, pressure gauge, pressure regulating valve, mass flow meter, ball valve, gas mixing tank, high precision Sampling pump, steam generator), photothermal coupling reaction module (simulated solar light source, reactor), reaction product detection module (back pressure valve, water cooling cycle, condensing tank, condensing gas path, heat tracing pipeline, exhaust gas treatment tank, Gas chromatograph I, gas chromatograph II, data acquisition and analysis PC terminal), system integrated control module (gas circuit control unit, protection control unit); wherein, the reaction kettle chamber is a hollow kettle body structure, and the reaction kettle chamber The bottom is provided with a quartz-made porous catalyst placement platform, the top of the reactor chamber is provided with a qu...

Embodiment 2

[0027] The photothermal composite catalytic multifunctional reaction system provided by the present invention is used in CO 2 The application steps in the hydrogenation to methane reaction are as follows:

[0028] (1) Before the test, lay a layer of quartz wool on the porous quartz catalytic bed to prevent the catalyst from leaking from the pores. figure 2 The 75mg Ni / CeO 2 The catalyst is evenly spread on the quartz wool;

[0029] (2) Place the light source directly above the reactor. The light source used is a high-uniformity xenon lamp with a total optical power of 50W and a spectral range of 320-800nm. The light intensity on the catalyst surface ranges from 2.43 to 5.25 W / cm 2 .

[0030] Tighten the flange of the reactor, pass Ar from the inlet of the reaction gas, the flow rate is 20ml / min, and detect the actual flow rate of the gas from the gas outlet of the gas chromatograph II (18). If the system is normal, raise the temperature of the reactor to 160°C, switch th...

Embodiment 3

[0035] The application steps of the photothermal composite catalytic multifunctional reaction system provided by the present invention in the dry reforming of methane are as follows:

[0036] (1) Before the activity test, use 10% H 2 / N 2 The calcined sample is reduced at high temperature by the mixed gas to expose the active sites of the catalyst. Due to good dispersion, the nano-active metal sites are evenly distributed on the surface of the catalyst, thereby enhancing the light absorption capacity of the catalyst, and a large amount of The active site provides a basis for the improvement of catalytic activity;

[0037] (2) Lay a layer of quartz wool on the porous quartz catalytic bed to prevent the catalyst from leaking out of the pores. image 3 The 5mg NiCo@C / Al 2 O 3 The catalyst is evenly spread on the quartz wool;

[0038] (3) Replace the air in the reactor with Ar, and then switch to CH 4 / CO 2 / Ar(set CH 4 The flow is 12ml / min, CO 2 The mixed gas with the fl...

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Abstract

The invention discloses a photo-thermal composite catalytic multifunctional reaction system which comprises a feeding gas circuit module, a photo-thermal coupling reaction module, a reaction product detection module and a system integrated control module. The air inlet design and the air outlet design can meet the requirements of different reaction systems; the adopted light source is a high-uniformity simulated solar light source and is provided with a travel-adjustable movable support, uniform light spots are output, the adopted detection equipment is a series gas chromatograph system, the detection sensitivity is improved, and the control device comprises a gas circuit control unit and a protection control unit. And online control and data synchronization of influence factors such as fluid speed, reaction temperature and pressure are realized. Different from the design of most systems only aiming at single reaction at present, a multifunctional reaction test platform which can integrate different solar energy to drive a hydrocarbon fuel conversion reaction system, realize efficient and ordered conversion of energy and monitor the conversion efficiency and performance in real time so as to meet experimental and production requirements is constructed.

Description

technical field [0001] The invention belongs to the technical field of renewable energy and energy storage, and in particular relates to a new technology of organically combining solar photothermal utilization and thermochemistry. More specifically, it relates to a photothermal composite catalytic multifunctional reaction system, a method and application thereof, which can meet the needs of different scenarios in production and life and realize the efficient and orderly conversion and utilization of solar energy by driving the conversion of hydrocarbon fuels by solar energy. Background technique [0002] At present, according to the country's strategic deployment of "carbon peaking and carbon neutralization", the use of clean, high-efficiency and low-carbon advanced energy technologies can improve the conversion and utilization efficiency of renewable energy such as solar energy and wind energy, and meet various production and life application scenarios. Construct a multi-en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00B01J19/12B01J4/00B01J4/02B01J8/00B01J8/02C01B3/26C07C1/12C07C9/04G01D21/02
CPCB01J19/127B01J19/0013B01J19/0006B01J4/02B01J4/008B01J8/02B01J8/001B01J8/0278G01D21/02C01B3/26C07C1/12C07C9/04Y02P20/133
Inventor 张凯许翠萍
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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