Device for preparing olefins from methanol

Abstract

The application of the invention provides a device for preparing olefins from methanol. The device for preparing olefins from methanol comprises a reactor, a regenerator, a heater and catalyst storageequipment, wherein the regenerator is communicated with the reactor through a first catalyst pipeline, a catalyst in the reactor enters the regenerator through the first catalyst pipeline; the heateris communicated with the regenerator through a second catalyst pipeline, the catalyst in the heater enters the regenerator through the second catalyst pipeline; the catalyst storage equipment is communicated with the first catalyst pipeline and / or second catalyst pipeline, and the catalyst in the catalyst storage equipment is conveyed to the first catalyst pipeline and / or the second catalyst pipeline. The device for preparing olefins from methanol avoids the problems that the catalyst directly enters the regenerator and is damaged, the damage of the catalyst caused by the high temperature iseffectively reduced, the loss of the catalyst is avoided, the use level of the catalyst is reduced, the economic loss is reduced, and in addition, the device for preparing olefins from methanol also avoids the problem that the catalyst causes the exceeding of dust discharge.

Description

technical field [0001] This application relates to the field of methanol-to-olefins, in particular, to a methanol-to-olefins device. Background technique [0002] With the continuous and rapid development of my country's industrial and agricultural economy, the market demand for basic organic raw materials such as ethylene and propylene is increasing. In my country, ethylene and most of propylene are mainly produced by steam cracking using naphtha and light diesel oil as raw materials, and part of propylene is obtained through rectification of liquefied petroleum gas, a by-product of catalytic cracking. [0003] However, due to the shortage of petroleum resources and insufficient steam cracking capacity, my country's ethylene and propylene production has been in short supply for a long time, so chemicals produced from ethylene and propylene (such as polyethylene, polypropylene, ethylene glycol, etc.) The number of imports has remained high. [0004] In order to reduce the i...

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Problems solved by technology

[0010] The main purpose of this application is to provide a methanol-to-olefins device to solve the problem of serious catalyst loss in the methanol-to-olefins device in the prior art

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