Variable temperature methanol synthesis reaction system

Abstract

The invention relates to a variable temperature methanol synthesis reaction system, which includes an isothermal shift furnace, a steam drum and a heat exchanger. The isothermal shift furnace includes a furnace body, a catalyst frame and a synthesis gas collection pipe arranged in the furnace body; the furnace body is provided with raw materials Gas inlet, synthesis gas outlet and feed gas channel, the side wall of the catalyst frame is provided with multiple air holes; the catalyst bed is provided with a number of heat exchange tubes connected to the steam drum; the side wall of the synthesis gas collection pipe is provided with inlet Stomata, the outlet of the synthesis gas collection pipe is connected to the outlet of the synthesis gas; it is characterized in that there are multiple raw material gas preheating pipes in the catalyst bed, and the inlets of each raw material gas preheating pipe are connected to the first raw material gas delivery pipeline, and each raw material The outlet of the gas preheating pipe is connected to the raw gas channel; the second raw gas delivery pipeline is connected to the raw material gas inlet through a heat exchanger; the first raw material gas delivery pipeline and the second raw material gas delivery pipeline are respectively provided with a first valve and a second valve .

Description

Technical field [0001] The present invention relates to chemical equipment, and more particularly to a variable diethylene glycol synthesis reaction system. Background technique [0002] Methanol synthesis is a reversible exothermic reaction process. For copper-based methanol synthesis catalysts, the reaction temperature needs to be maintained between 220 ° C to 280 ° C, the temperature is too low, and the temperature is too high, affecting the life and product quality of the catalyst. In order to make the methanol synthesis can be carried out in a suitable temperature range, the reaction heat released during the catalyst reaction bed is generally buried in the catalyst reaction bed, and the reaction heat of methanol synthesis is transferred through the gasification of the boiler water in the heat exchanger. The type of reaction is removed. The instrument is called an isothermal methanol synthesis reactor. [0003] Based on extended methanol synthesis catalyst life, the initial r...

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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a variable temperature methanol synthesis reaction system in view of the status quo of the prior art, which can better solve the boiler water gasification temperature and pressure while satisfying the reaction temperature range of the initial and final stages of the methanol synthesis reaction catalyst. Fluctuation problem, and then can realize the reduction of engineering investment and the optimization of the steam pipe network system of the whole plant, and meet the large-scale and energy-saving development requirements of the methanol synthesis unit

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