Water vapor generation method and device with control of flow quantity

A water vapor generation and flow control technology, applied in chemical instruments and methods, water, inorganic chemistry, etc., can solve the problems of unstable water vapor and low precision of water vapor flow control, and achieve stable generation, improved control accuracy, and high purity high effect

Active Publication Date: 2015-04-08
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the object of the present invention is to provide a water vapor generation method with flow control, wherein through the process steps, especially the oxidation-reduction reaction mechanism of water vapor and its key process parameters, etc. Research and design, compared with the existing technology, can effectively solve the problems of low water vapor flow control accuracy and unstable water vapor generation in the existing water vapor gene

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  • Water vapor generation method and device with control of flow quantity
  • Water vapor generation method and device with control of flow quantity
  • Water vapor generation method and device with control of flow quantity

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Embodiment 1

[0034] figure 1Shown is the structural representation of the present invention based on fluidized bed reactor water vapor generating device, and described fluidized bed reactor is micro fluidized bed reactor, and the diameter of this fluidized bed reactor is 60mm, height 180mm, fluidized bed The use of quartz material for the reactor ensures that the fluidized bed reactor itself does not react with hydrogen and / or water vapor. The air distribution plate 6 in the fluidized bed reactor ensures that the gas passes from bottom to top, and the copper oxide particles 7 will not leak from the reaction chamber 8 to the preheating pipeline 5; the height of the bed of copper oxide particles 7 ensures that the gas is in the bed The residence time of hydrogen is longer than the time required for the complete reaction of hydrogen; the gas-solid separation plate 10 ensures that the gas passes from bottom to top, and the copper oxide particles 7 will not escape from the reaction chamber 8 to...

Embodiment 2

[0038] figure 2 Shown is the structural representation of the water vapor generating device based on the fixed bed reactor of the present invention, the fixed bed reactor is a miniature fixed bed reactor, the diameter of the fixed bed reactor is 60mm, the height is 180mm, and the fixed bed reactor uses quartz material , to ensure that the fixed bed reactor itself does not react with hydrogen and / or water vapor. The air distribution plate 6 in the fixed-bed reactor ensures that the gas passes from top to bottom; the height of the bed of copper oxide particles 7 ensures that the residence time of the gas in the bed is greater than the time required for the complete reaction of hydrogen; the gas-solid separation plate 10 ensures that the gas passes through Pass up and down, and the copper oxide particles 7 will not escape from the reaction chamber 8 to the water vapor output pipe 11 .

[0039] The method for generating 0.001 mol / min water vapor with the above-mentioned device i...

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Abstract

The invention discloses a water vapor generation method and device with control of flow quantity; water vapor is generated by carrying out a reaction of hydrogen with metal oxide particles under a condition of high temperature, wherein the oxidizability of metal cations in the metal oxide particles is stronger than that of hydrogen ions. Because the reaction rate of the hydrogen with the metal oxide particles under the condition of high temperature is quite fast and the reaction belongs to an irreversible reaction, the hydrogen can be completely oxidized, and high-pure water vapor with the concentration of close to 100% can be continuously produced; the flow quantity of the water vapor is completely controlled by the flow quantity of the hydrogen. Because the control precision of the flow quantity of the hydrogen is quite high, compared with a traditional generation method of generating water vapor from liquid water, the method has the control precision of the flow quantity of the water vapor greatly improved; in addition, the molar ratio of the reaction hydrogen to the generated water vapor is 1:1, the gas volume flow quantity is not changed in the reaction process, and the stability of the pressure of the water vapor can be ensured. Therefore, the method and the device have the advantages of stable water vapor output pressure and flow quantity, and high flow quantity control precision.

Description

technical field [0001] The invention belongs to the technical field of steam generation, and more specifically relates to a method and device for controlling flow of steam. Background technique [0002] Water vapor is a common raw material gas in chemical reaction process. To carry out experiments on the reaction of water vapor in the laboratory (such as coal char and steam gasification reaction, ethanol and steam reforming reaction, methane and steam reforming reaction, etc.), it is often necessary to achieve the stability of continuous trace water vapor supply to ensure the precision and accuracy of the experimental results. At present, the traditional water vapor generation method uses water as raw material, which is continuously injected into the heater through a peristaltic pump (or other constant flow water pump such as a syringe pump), and uses the principle of water absorption and evaporation to generate a small amount of water vapor. [0003] But the main problems...

Claims

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Application Information

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IPC IPC(8): C01B5/00
CPCC01B5/00
Inventor 陈超姚洪徐凯张森胡晓炜肖黎罗光前
Owner HUAZHONG UNIV OF SCI & TECH
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