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Method for synthesis and purification of hydrogen from natural gas

A technology for purifying hydrogen and natural gas, applied in chemical instruments and methods, hydrogen, hydrogen separation, etc., to achieve high conversion efficiency and good purification effect

Inactive Publication Date: 2013-01-02
SUZHOU JINHONG GAS CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, the process methods in the prior art are only suitable for small-scale hydrogen production, and there is no known and effective process that can support hydrogen production larger than 1000 m 3 / h to tens of thousands of cubic meters of large-scale hydrogen production

Method used

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  • Method for synthesis and purification of hydrogen from natural gas
  • Method for synthesis and purification of hydrogen from natural gas

Examples

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Embodiment Construction

[0013] Attached below figure 1 Examples further illustrate the method of the present invention.

[0014] The invention uses natural gas as raw material to generate hydrogen through cracking, and the natural gas contains CH 4 : 92.5%, C 2 h 6 : 3.96%, C 3 h 8 : 0.335%, IC 4 h 10 : 0.12%, NC 4 h 10 : 0.08%, IC 5 h 12 : 0.22%, H 2 S: 0.0001%, N 2 : 0.85%, CO 2 : 1.89%, H 2 0: 0.0005%; the expected production capacity of the whole process is 2400Nm 3 / h.

[0015] The natural gas coming from the medium-pressure tanker is stabilized to 2.0MPa by the emergency shut-off valve and the natural gas pressure stabilizing valve, and a small part of it goes to the reformer burner as fuel after reducing the pressure reducing valve, and most of the flow is regulated by the water-carbon ratio flow regulating valve And mix with the circulating hydrogen from the hydrogen return compressor, enter the feed gas preheating coil in the convection section of the steam reformer, preheat ...

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Abstract

The invention discloses a method for synthesis and purification of hydrogen from natural gas. According to the invention, hydrogenation catalysis is used to remove sulfur in natural gas; both CO-MO hydro-conversion and ZnO desulfurization technology are employed for treatment of feed gas; methane reacts with water vapor at a high temperature in the presence of the conversion catalyst NiO to produce mixed gas of H2, CO, CO2, etc.; the mixed gas of H2, CO and CO2 obtained in conversion procedure of water vapor undergoes a water gas reaction in a shifting furnace filled with a high temperature shift catalyst Fe2O3; CO further reacts with water vapor, and the majority of CO is converted into CO2 and H2; two-stage purification at an ordinary hydrogen section and a purification section is carried out. With the method, H2 with a high purity of more than 99.999% can be obtained.

Description

technical field [0001] The invention relates to a method for synthesizing and purifying gas, in particular to a method for synthesizing hydrogen from natural gas and purifying it into high-purity hydrogen. Background technique [0002] Hydrogen is one of the cleanest and eternal energy sources for human beings. The composition of the world's energy has gone through the process from solidification (firewood, coal, nuclear), liquefaction (petroleum), to vaporization (natural gas, hydrogen), and the proportion of carbon and hydrogen in it has dropped all the way: 90% (firewood), 60% (coal) 30% (oil), 20% (natural gas), 0% (hydrogen), the hydrogen content is getting higher and higher, while the carbon content is getting lower and lower. As we all know, carbon dioxide is the culprit that causes pollution to cause the global warming effect, and the reduction of carbon content means clean energy. Due to its special properties, hydrogen is widely used in petrochemical, aviation, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/38C01B3/56
CPCY02P20/52
Inventor 金向华李英辉李荷庆
Owner SUZHOU JINHONG GAS CO LTD
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