Continuous colloid mixer and its application

A mixer and colloid technology, applied in mixers, applications, mixers with rotary stirring devices, etc., can solve the problem of not realizing the continuous preparation process of catalysts, not suitable for continuous online mixing to prepare colloids, and not continuous automatic production of cracking catalysts process and other problems, to achieve the effect of reducing production cost and labor intensity, reducing dust loss and improving production environment

Active Publication Date: 2007-06-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese patent CN1541758A discloses a fluid continuous mixer. This technology can continuously mix colloids and colloids online, but it is not suitable for the process of continuously mixing solid powder and liquid on-line to prepare colloids.
However, in fact, only the preparation of silica sol and the mixing of several colloids were carried out locally in the rapid stirring mixing tank, and the continuous preparation process of the entire catalyst was not realized.
[0010] Chinese patents CN1580195A and CN1579725A disclose a continuous preparation method of cracking catalyst and kaolin colloid, which is actually limited to the preparation of kaolin colloid and pseudoboehmite colloid, not the continuous automatic production process of the entire cracking catalyst preparation

Method used

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  • Continuous colloid mixer and its application
  • Continuous colloid mixer and its application
  • Continuous colloid mixer and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0050] In this embodiment, the mixer provided by the present invention is used to uniformly mix the solid powder and the liquid to prepare a colloid.

[0051] The structure of the mixer is shown in Figure 1: the inner diameter of the mixer shell is 200mm, the height of the shell is 350mm, the tooth height of the stator 3 and rotor 4 of the mixer is 10mm, both the stator 3 and the rotor 4 are composed of three layers of teeth, each layer There are 16 teeth, the gap between the stator teeth 6 and the rotor teeth 7 from the center of the shaft t1 = 4mm, t2 = 3.5mm, t3 = 3mm, t4 = 2.5mm, t5 = 2.4mm, scraper 14 from the device The distance between the walls is d1=d2=d3=2mm, the installation angle of the scraper 14 is α=20°, and the power of the motor is 2.5KW. In this embodiment, kaolin is mixed with deionized water. Kaolin is imported from solid feed pipe 1, and deionized water is imported from liquid feed pipe 2. The colloid treatment capacity is 300kg / h, and the production collo...

Embodiment 2

[0056] In this embodiment, the mixer provided by the present invention is used to uniformly mix two colloids with relatively high viscosity to prepare a colloid.

[0057] The size of the mixer shell remains unchanged, and the internal stator 3 and rotor 4 are replaced. Both the stator 3 and the rotor 4 are composed of two layers of teeth. The stator teeth 6 and the rotor teeth 7 each have 12 teeth, and the tooth height is 10mm. The gap between the teeth 6 and the rotor teeth 7 is t1=4mm, t2=3.5mm, t3=3mm, the distance between the scraper 14 and the wall is d1=d2=d3=2mm, and the installation angle of the scraper 14 is α=20 °; 45% of solid content kaolin colloid and 14% of solid content of pseudoboehmite colloid are mixed with 10:15 to prepare colloid, the stirring motor power is 3.8KW, the production colloid 400kg, the colloid solid content is 26.4%, the colloid The particle size is 0.5-4μm, the average particle size of the colloid is 1.6μm, requires 2-3 people to operate the s...

Embodiment 3

[0062] This example is a specific implementation method of applying the continuous colloid mixer provided by the present invention to the continuous production of cracking catalysts.

[0063] The specific steps of continuous production of cracking catalyst are as follows:

[0064] a) Kaolin, pseudo-boehmite, and molecular sieve DASY2.0 powder raw materials are mechanically crushed into fine powders with an average particle size of less than 200 μm; the solid powder is accurately measured online and continuously transported to the facility described in Example 1 with a screw conveyor in the mixer;

[0065] b) Kaolin powder, deionized water, and aluminum sol are quickly mixed to produce kaolin colloid (colloid 1), with a solid content of 40%;

[0066] Pseudo-boehmite powder is quickly mixed with deionized water and hydrochloric acid to produce pseudo-boehmite colloid (colloid 2), with a solid content of 15%;

[0067] Molecular sieve DASY2.0 and deionized water are quickly mixe...

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Abstract

The continuous colloid mixer includes the following members: solid feeding pipe, liquid feeding pipe, stator, rotor, pedestal, discharge port, rotating shaft and driving shaft. The continuous colloid mixer can mix solid powder and liquid to prepare colloid continuously in high production efficiency, and is used in the continuous production of cracking catalyst. Compared with available intermittent mixer, the present invention has lowered manufacture cost, continuous and stable production and improved product quality.

Description

technical field [0001] The invention relates to a mixer with a rotating stirring device in a fixed container, in particular, it is a continuous mixing and gelling equipment for mixing solid powder and liquid, colloid and colloid to prepare colloid. [0002] The invention also relates to a preparation method of the cracking catalyst, specifically, a fully automatic and continuous production method of the cracking catalyst. Background technique [0003] In the chemical industry, metallurgy, building materials and other industries, it is often encountered that solid powder and liquid are mixed, kneaded, and humidified to prepare colloids. The colloid preparation process basically adopts the batch operation method of stirring reactors. Intermittent operation has the disadvantages of small processing capacity, long stirring time, high labor intensity, and low colloidal solid content; it will cause dust to fly and pollute the environment when feeding; whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C7/08B02C7/175B01F7/16
Inventor 田志鸿周健龙军吕庐峰何鸣元张占柱李学锋王骞
Owner CHINA PETROLEUM & CHEM CORP
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