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Fluidized-bed reactor for powder material

A technology of powder material and reaction device, which is applied in the direction of heating to dry solid materials, hearth furnace, drying solid materials, etc., can solve the problems such as chemical reaction can not be carried out, powder materials are easy to stick, and drying time is prolonged.

Inactive Publication Date: 2007-11-21
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] As shown in Figure 1, the ebullated bed apparatus for this chemical reaction mainly includes 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 polytetrafluoroethylene r...

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 is concerned with the boiling bed reaction equipment for the powder material, includes: the glass main reactor (-), the combination tie-in, the gas heating system, the heating constant temperature system (-), the shaking equipment (-), the combination tie-in sealing glass main reactor (-), the heating constant temperature system (-) provides the constant temperature reaction environment for the glass main reactor (-), the shaking equipment (-) sets at the bottom of the heating constant temperature system (-). The equipment is easy for observing the reaction process, realizing felt of the powder material in order to adjust the reaction temperature, improve the molecular weight of the production and the intensity of the 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 Applications(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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