Reduction method of methanol synthesis catalyst

A methanol synthesis and catalyst technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of high system operating costs and waste costs

Inactive Publication Date: 2015-08-26
LINHUAN COKING
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  • Claims
  • Application Information

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Problems solved by technology

However, this scheme requires the normal and stable operation of auxiliary systems such as the air separation system, synthesis gas compressor, crude desulfurization, fine desulfurization, conversion system, and heating furnace to supply the gas required f

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  • Reduction method of methanol synthesis catalyst
  • Reduction method of methanol synthesis catalyst

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specific Embodiment approach

[0017] figure 1 Show the specific embodiment of the reduction method of a kind of methanol synthesis catalyst of the present invention: the reduction method of this methanol synthesis catalyst comprises the following steps:

[0018] (1) Transport hydrogen from the gas storage tank 1 of the hydrogen drainage and irrigation vehicle to the hydrogen pressure reducing valve group 2 of the hydrogen drainage and irrigation vehicle for decompression;

[0019] (2) The hydrogen after decompression treatment is transported to the syngas compressor 4 through the hydrogen supply main pipe 3 to boost the pressure;

[0020] (3) Transport the synthesis cycle gas containing hydrogen and nitrogen to the nitrogen inlet 5 of the synthesis gas compressor 4 to mix with the boosted hydrogen. The volume percentage ratio of each component in the synthesis cycle gas is: hydrogen: 0.3 -0.5%, nitrogen 99.5-99.7%.

[0021] (4) The mixed gas is transported to the catalyst bed layer of the methanol synthe...

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Abstract

The invention discloses a reduction method of methanol synthesis catalyst. The reduction method comprises the following steps: conveying hydrogen from a gas storage tank of a hydrogen drainage and irrigation vehicle to a hydrogen depressurizing valve of the hydrogen drainage and irrigation vehicle to depressurize; conveying hydrogen after the depressurizing treatment to a synthesis gas compressor through a general hydrogen supplementing pipe to boost; conveying the synthesis circular gas containing hydrogen and nitrogen to a nitrogen inlet of the synthesis gas compressor so as to mix with the hydrogen after the boosting treatment, wherein the volume percent of every component in the synthesis circular gas is: 0.3-0.5% of hydrogen and 99.5-99.7% of nitrogen; conveying the mixed gas to a catalyst bed layer of a methanol synthesis reactor through a gas conveying pipe to participate in the reduction reaction. By adopting the technical scheme of the invention, the reduction reaction speed is accelerated, the reaction time is saved, and working efficiency is improved; the system is completely and stably ran without a series of assistant systems and the gas required by reduction is supplied, and thus cost is saved.

Description

technical field [0001] The invention relates to the technical field of industrial catalyst reduction, in particular to a method for reducing methanol synthesis catalysts. Background technique [0002] In the traditional process, the newly loaded methanol synthesis catalyst must be heated and reduced for 80 hours after the system is running before it can be used. This affects the efficiency of industrial production, delays the work process, and prolongs the working time. [0003] According to the original design plan, the industrial reduction of the methanol synthesis catalyst adopts the plan of reducing by the system's self-produced reformed gas after reforming and feeding oxygen. However, this scheme requires the normal and stable operation of auxiliary systems such as the air separation system, synthesis gas compressor, crude desulfurization, fine desulfurization, conversion system, and heating furnace to supply the gas required for methanol catalyst reduction. The amount...

Claims

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Application Information

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IPC IPC(8): B01J37/18
Inventor 朱磊李伟孟影子朱海金
Owner LINHUAN COKING
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