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Method and device for regenerating fluidized particles in fluidized bed separator

A fluidized bed and separator technology, applied in the field of separation, can solve problems such as incomplete backwashing, short operation period, and large investment in equipment, and achieve the effects of low operating cost, convenient operation, and simple process

Active Publication Date: 2019-10-08
SHANGHAI HUACHANG ENVIRONMENT PROTECTION
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0009] The present disclosure provides a novel method and device for regenerating boiling particles in a fluidized bed separator, thereby effectively solving the problems of short operation period, incomplete backwashing, large investment in equipment and high energy consumption of the device in the existing precision filtration method

Method used

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  • Method and device for regenerating fluidized particles in fluidized bed separator
  • Method and device for regenerating fluidized particles in fluidized bed separator
  • Method and device for regenerating fluidized particles in fluidized bed separator

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Embodiment 1

[0078] In a 1.8 million tons / year methanol-to-olefins process, according to the method of the present invention, an ebullating bed separator is used to filter and purify quenched water containing solid catalysts to remove residual spent catalyst particles. The specific operation process and The effect is described as follows:

[0079] 1. Material properties and related parameters

[0080] The quenching water for methanol to olefins is a liquid-solid two-phase mixture, and the water contains solid catalyst particles and oil, wherein water is the continuous phase, and oil and solid catalyst are the dispersed phase medium. The quenching water treatment capacity is 250t / h, and the density is 915.4kg / m in the liquid phase operation state 3 , the viscosity is 0.255cP, the operating temperature is 120°C, the spent catalyst content is 500mg / L, the average particle size is 2.5μm, and the oil content is 15mg / L.

[0081] 2. Fluidized bed separator device

[0082] The diameter of the d...

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Abstract

The invention discloses a boiling particles regeneration method in a boiling bed separator and an apparatus thereof. and provides the boiling particles regeneration method in the boiling bed separator. The method comprises the following steps: A) a particle boiling bed layer is broken; B) the medium particles are bumped to remove a catalyst on the surface; C) a polyphase mixture is introduced into a three-phase separator for high-speed rotation of the particles, and the desorption of the attachments on the surface is accelerated; and D) regeneration is realized through particles ordering and settlement. The invention also provides a boiling particle regeneration apparatus in the boiling bed separator.

Description

technical field [0001] The disclosure belongs to the field of separation and environmental protection, relates to a fluidized bed separator, and provides a method for regenerating medium particles in the fluidized bed by boiling and rotating, so as to realize the long-term, high-efficiency, and low-cost operation of the fluidized bed separator. In particular, the present disclosure relates to methods and apparatus for regeneration of ebullating particles in ebullating bed separators. Background technique [0002] Methanol to Olefin, referred to as MTO (Methanol to Olefin), refers to the process of preparing light olefins through catalytic reaction using methanol as raw material. In MTO industrial production, the reaction gas produced from the reactor carries worn catalyst particles and oily substances. After being separated by a three-stage cyclone separator, a part of the catalyst and oily substances will be entrained in the reaction gas and enter the quenching tower, The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D24/46B01D24/36
Inventor 方乙琳黄渊郭丹时代陈建琦吕文杰吴文峰汪华林
Owner SHANGHAI HUACHANG ENVIRONMENT PROTECTION
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