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Process for preparing CO and synthetic gas and methanol by steam combination conversion of hydrocarbons

A technology for transforming gas and synthesis gas, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve problems such as hydrogen and carbon imbalance, and achieve the goal of reducing flue gas emissions and fuel natural gas consumption. Effect

Active Publication Date: 2005-11-30
庞玉学
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Problems solved by technology

[0007] The main purpose of the present invention is to make full use of natural gas resources, to combine methanol production and methanol carbonylation acetic acid production, fundamentally solve the problem of hydrogen and carbon imbalance, and realize resource recycling, reduce fuel gas consumption, save energy and reduce energy consumption. consumption, reduce investment and shorten construction period

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  • Process for preparing CO and synthetic gas and methanol by steam combination conversion of hydrocarbons
  • Process for preparing CO and synthetic gas and methanol by steam combination conversion of hydrocarbons
  • Process for preparing CO and synthetic gas and methanol by steam combination conversion of hydrocarbons

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Embodiment Construction

[0042] see figure 1 , the feed gas is passed through line 1a (or the H 2 After mixing, the raw material gas preheating coil entering the convection section of the externally heated primary reformer 9a is preheated to 250-430°C, and then enters the hydrodesulfurization reactor 6a through the pipeline 5a to remove harmful sulfur, the reactor is equipped with a catalyst. The desulfurized gas flows out from the pipeline 7a and is mixed with the process steam (pressure 0.3-4.5MPa) from the pipeline 23, which is the process raw material gas, and enters the natural gas / steam preheating plate in the convection section of the externally heated primary reformer 9a tube, the temperature rises to 400-600°C, the pressure is 0.2-4Mpa, and enters the reforming tubes of the externally heated primary reforming furnace 9a and the heat-exchanging primary reforming furnace 10a respectively through the pipeline 8a, and these reforming tubes are equipped with catalyst. In the heat-exchanging pri...

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Abstract

The invention relates to a method of built-up hydrocarbon steam conversion to produce CO, synthetic gas and methanol. The invention adopts two series. In one of the series, second reformed gas is separated with part CO and residue gas is mixed with second reformed gas generated in the other series to produce synthetic gas. Said CO is used to compound acetate by carbonylation of methanol and synthetic gas is used in methanol synthesis. High-heat second reformed gas from second converter is used to heat logistics in heat-exchanger type first converter tube, so the invention saves consumption of fuel gas greatly. The invention can realize cogeneration of methanol and acetic acid and cycle natural gas sauce to be used.

Description

technical field [0001] The invention relates to a method for preparing CO, synthesis gas and methanol through combined conversion of hydrocarbon steam. Background technique [0002] Using gaseous hydrocarbons as raw materials to prepare raw material gas for ammonia synthesis, the earliest industrialized process is partial oxidation at atmospheric pressure. With the development of metallurgical technology, the processing and production of high-temperature resistant alloy conversion tubes (such as HK-40, HP-Nb) has been obtained. Solved, the gaseous hydrocarbon pressurized steam reforming process has replaced the atmospheric pressure partial oxidation process. So far, the conversion pressure has been increased from normal pressure to 3.0-4.3MPa, and the production scale is becoming larger and larger. The largest single-series synthetic ammonia in the world today is 1700MTPD, and the largest single-series methanol is above 2540MTPD. The traditional synthesis gas preparation pr...

Claims

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Application Information

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IPC IPC(8): C01B3/36
Inventor 庞玉学刘武烈万蓉张学仲王志坚庞彪曾竹萍
Owner 庞玉学
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