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A system and method for catalyst particle recovery

A technology of catalyst particles and recovery devices, which is applied in the direction of separating sediments by centrifugal force, can solve problems such as restricting process development, achieve the effects of ensuring accuracy, improving efficiency, and solving adverse effects

Active Publication Date: 2015-09-23
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are still technical problems of separation and classification that restrict the development of the process

Method used

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  • A system and method for catalyst particle recovery
  • A system and method for catalyst particle recovery
  • A system and method for catalyst particle recovery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Recovery System

[0039] see figure 1 , figure 2, Figure 3a , Figure 3b , Figure 5 , The catalyst particle recovery system includes a cylindrical recovery device 1, 38 swirl tubes 2 are vertically arranged in the recovery device 1, and the shell diameter of the recovery device 1 is 800mm and the height is 1500mm. The top of the recovery device is provided with a clear liquid outlet 3, the bottom is provided with a catalyst recovery liquid outlet 4, and the side wall is provided with a filtrate inlet 5.

[0040] 38 swirl tubes 2 are vertically arranged in the recovery device, distributed in an even array, and the side wall is provided with a filtrate inlet 5, which is 350mm away from the bottom of the recovery device 1. After the filtrate enters, the liquid level rises to the position of the swirl tube inlet 6, And enter the swirl tube 2. The diameter of the swirl tube distribution area is 740 mm. The feed inlet 6 of the swirl tube 2 is a tangential...

Embodiment 2

[0043] Example 2: Recovery system

[0044] The system for recovering catalyst particles includes a cylindrical recovery device in which 18 swirl tubes are vertically arranged. The shell diameter of the recovery device 1 is 500mm and the height is 1200mm. The top of the recovery device is provided with a clear liquid outlet, the bottom is provided with a catalyst recovery liquid outlet, and the side wall is provided with a filtrate inlet.

[0045] There are 18 swirl tubes installed vertically in the recovery device, which are evenly distributed in an array. There is a filtrate inlet on the side wall. The filtrate inlet is 300mm away from the bottom of the recovery device. . The diameter of the swirl tube distribution area is 450mm. The feed inlet of the swirl tube is a tangential inlet, and the feed inlets are all arranged on the same horizontal plane. The recovery device is made of 316L stainless steel, and the inner surface is sprayed with 4 layers of epoxy resin (Xi'an Ti...

Embodiment 3

[0048] Example 3: Recovery of Catalyst Particles

[0049] Sinopec Catalyst Qilu Branch Catalytic Cracking Catalyst Production Workshop (Catalyst No. 2 Workshop), the catalyst particles are transported out of the reactor with washing water, filtered through a bag filter, and the filtrate flow rate is 30m 3 / h. see Figure 5 , The recovery system is provided with two recovery devices 1, and the structure of the recovery device 1 is as in embodiment 1. Each processing capacity is 15m 3 / h. Five batches of filtrate were processed and analyzed for particle size, in which the catalyst particle distribution is shown in Table 1. In Table 1, "1-in" means the first batch of filtrate, "1-turbidity" means the first batch of filtrate passed through the recovery device, and the turbid liquid from the catalyst recovery liquid outlet, and so on.

[0050] Table 1: Particle distribution of recovery unit inlet and turbid liquid outlet

[0051]

[0052] The filtrate passes through the li...

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Abstract

The invention belongs to the field of petrochemical industry, and provides a system for recovering a catalyst particle. The system comprises a cylindrical recovering device in which a plurality of swirl pipes are vertically arranged; the recovering device is characterized in that a clean liquid outlet is formed in the top part, a catalyst recovery liquid outlet is formed in the bottom part, and a filtrate inlet is formed in the sidewall. According to the device and a method provided by the invention, the particles can be recovered with high precision, so that the recovery efficiency can be improved; in addition, the wear is reduced, the service lives of the swirl pipes are prolonged, and equipment can be operated for a long term; a high-performance inner component material is provided, so that the swirl pipes have high mechanical processing performance, strength, wear resistance, corrosion resistance and other performances.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a device and method for removing water in a mixture of catalyst particles. Background technique [0002] With the increase of catalyst production, the recovery of catalyst particles contained in the filtrate is not only a need to reduce costs and increase benefits, but also an important part of energy conservation and emission reduction for enterprises. Catalysts, especially NaY-type catalysts, are the main source of active components in catalytic cracking catalysts. The current industrial production method of this type of catalysts basically adopts the guiding agent method (US369009, US3671191) proposed by Grace Company of the United States, that is, the soluble silicon source, The aluminum source forms a reaction mixture with grains smaller than 0.1 microns as a guiding agent according to a certain processing sequence, and then crystallizes at 100°C. The mothe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D21/26
Inventor 杜陕君周岩杨凌周先桃尹喆张磊贾惠
Owner CHINA PETROLEUM & CHEM CORP
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