Continuous flash-evaporation type fluidized drying bed for drying chlorinated polyethylene

A technology of chlorinated polyethylene and boiling drying bed, which is applied in drying solid materials, drying gas arrangement, heating to dry solid materials, etc., can solve the problems of high labor intensity, long production cycle, inconvenient operation, etc., and achieve low labor intensity. , the production cycle is short, the effect of prolonging the drying time

Inactive Publication Date: 2012-08-15
威海金泓高分子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process of chlorinated polyethylene, the current drying process mainly adopts airflow drying and intermittent fluidized bed drying. Specifically, the centrifuged material enters the airflow drying pipe through the feeder, and the air is heated by steam through the heat exchanger. Then it enters the bottom of the airflow drying tube, the high-speed hot airflow accelerates the added powdery wet material and suspends it dispersedly in the airflow, and completes the drying of the surface moisture of the wet material during the process of airflow acceleration and transportation, and the surface moisture is partially removed The dropped material enters the fluidized bed dryer, the air is heated by the steam through the heat exchanger, and then sent to the bottom of the fluidized bed through the distribution plate to contact with the solid material to form a fluidized state and achieve the heat and mass exchange of the gas-solid phase; Although this way of drying chlorinated polyethylene can meet the product requirements, because the powdered chlorinated polyethylene is easy to soften and agglomerate when it exceeds 65°C, it is very easy to cause the bed to agglomerate and cause the bed to die. It is necessary to continuously adjust the chlorinated polyethylene during production. The fluidized bed drying temperature of ethylene, so the production cycle is long, the labor intensity is high, the energy consumption is high, and the operation is inconvenient

Method used

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  • Continuous flash-evaporation type fluidized drying bed for drying chlorinated polyethylene
  • Continuous flash-evaporation type fluidized drying bed for drying chlorinated polyethylene
  • Continuous flash-evaporation type fluidized drying bed for drying chlorinated polyethylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1, a kind of dry chlorinated polyethylene uses continuous flashing type fluidized drying bed, with reference to figure 1 , figure 2 , image 3 Shown, comprise flash drying device 1 and continuous type fluidized bed 2, it is characterized in that, the bottom of continuous type fluidized bed is provided with four drying chambers 3 that pass into different temperature air respectively, in each drying chamber, air It enters the drying chamber through four distributors 4 and a drying bed orifice 5 .

[0013] Above the fluidized bed, partitions 6 interspersed at intervals are arranged, and the material flows through the drying chamber along an S-shaped line on the bed.

[0014] The four drying chambers, according to the order from the closest to the farthest from the flash drying device, the air temperatures that are fed in order are 120°C, 140°C, 130°C, and 40°C.

[0015] During the production process, the chlorinated polyethylene material first enters the fla...

Embodiment 2

[0016] Example 2, a continuous flashing fluidized drying bed for drying chlorinated polyethylene, is similar to Example 1, the difference is that the four drying chambers are sequentially fed into The air temperature is 110°C, 135°C, 125°C, 45°C, and the mass fraction of water in the dried product is about 0.28%.

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Abstract

The invention provides a continuous flash-evaporation type fluidized drying bed for drying chlorinated polyethylene, which can effectively prevent the softening and caking of the chlorinated polyethylene, has short production period, low labor intensity and low energy consumption, and easily realizes automatic operation.

Description

technical field [0001] The invention relates to a drying equipment for chlorinated polyethylene. Background technique [0002] In the production process of chlorinated polyethylene, the current drying process mainly adopts airflow drying and intermittent fluidized bed drying. Specifically, the centrifuged material enters the airflow drying pipe through the feeder, and the air is heated by steam through the heat exchanger. Then it enters the bottom of the airflow drying tube, the high-speed hot airflow accelerates the added powdery wet material and suspends it dispersedly in the airflow, and completes the drying of the surface moisture of the wet material during the process of airflow acceleration and transportation, and the surface moisture is partially removed The dropped material enters the fluidized bed dryer, the air is heated by the steam through the heat exchanger, and then sent to the bottom of the fluidized bed through the distribution plate to contact with the solid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/02C08F8/20F26B3/08F26B21/00
Inventor 徐东国程福志丛兵日
Owner 威海金泓高分子有限公司
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