Fluidized-bed reactor for powder material

A powder material and reaction device technology, which is applied in the direction of heating to dry solid materials, hearth furnaces, and dry solid materials, etc., can solve the problems of easy bonding of powder materials, inconspicuous bonding, and prolonged drying time

Inactive Publication Date: 2009-09-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Powder materials are particularly easy to bond. If the fluidized bed is only used to dry powder, the bonding will not be obvious due to the low temperature, but the drying time will be prolonged.
But if the fluidized bed is used for chemical reaction of powder materials at high temperature, sticking will become a more serious problem
Because the powder bonding may make the chemical reaction impossible

Method used

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  • Fluidized-bed reactor for powder material

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Such as figure 1 As shown, the ebullating bed apparatus for this chemical reaction mainly consists of a glass main reactor. A set of PTFE joints, a gas heating system, a heating constant temperature system, and a vibration device.

[0019] The height of the reactor is 50 cm, the inner diameter is 6 cm, and the outer diameter is 7 cm. If the mass and gas flow rate of the materials participating in the reaction change greatly, the diameter and height of the reactor can be changed accordingly.

[0020] The polytetrafluoroethylene combined joint mainly includes an upper polytetrafluoroethylene ring 21, a lower polytetrafluoroethylene ring 22, a polytetrafluoroethylene top cover 23, a polytetrafluoroethylene base 24, a polytetrafluoroethylene screen 27, polytetrafluoroethylene Fluoroethylene collar 25, polytetrafluoroethylene funnel type air guide port 26, last polytetrafluoroethylene ring 21, following polytetrafluoroethylene ring 22 two parts are the same polytetrafluoro...

Embodiment 2

[0025] The fluidized bed chemical reaction device performs solid-phase polycondensation of polyethylene terephthalate, a powder material with a particle size of 300 mesh after crushing. Nitrogen flow is controlled at 1.2m 3 / g.h, the nitrogen temperature is controlled at 210°C, the oven temperature is controlled at 210°C, and the reaction time is 2 hours. After the reaction finished, the viscosity of sampling analysis was 0.988dL / g.

Embodiment 3

[0027]The fluidized bed chemical reaction device performs solid-state polycondensation on the powder material polyethylene terephthalate with a particle size of 200 mesh after crushing. Nitrogen flow is controlled at 1.2m 3 / g.h, the nitrogen temperature is controlled at 220°C, the oven temperature is controlled at 220°C, and the reaction time is 2 hours. After the reaction finished, its viscosity of sampling analysis was 1.187dL / g.

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Abstract

The invention discloses a fluidized bed reaction device for powder materials, which comprises a glass main reactor (1), a combination joint, a gas heating system, a heating constant temperature system (4), a vibration device (5), The combined joint seals the glass main reactor (1), the heating constant temperature system (4) provides a constant temperature reaction environment for the glass main reactor (1), and the vibrating device (5) is installed at the bottom of the thermal constant temperature system (4). The device is convenient for observing the reaction process, and can know the bonding situation of the powder material in time, adjust the reaction temperature, increase the molecular weight of the product, and enhance the strength of the finished product.

Description

technical field [0001] The invention relates to a fluidized bed reaction device, in particular to a fluidized bed reaction device for powder materials. Background technique [0002] Some chemical reactions require the removal of reaction by-product small molecules out of the reaction zone in order for the reaction to continue. For example, condensation reaction, polymer polycondensation reaction and polymer solid-state polycondensation. [0003] Most of the fluidized bed devices currently on the market are industrially used for drying treatment of powder materials. These powder materials do not react chemically during the drying process, and only need to remove the water in them, that is, it can be completed at a temperature of about 100 ° C, and the chemical reactions of powder materials are carried out at higher temperatures. For example, the raw materials and products of polymer solid-state polycondensation are powder materials. These powder materials undergo chemical r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/24F26B3/08
Inventor 胡群华邱高严治仁周鸿颖
Owner DONGHUA UNIV
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