CN202610147U

CN202610147U - Continuous flash fluidized drying bed for drying chlorinated polyethylene

Info

Publication number: CN202610147U
Application number: CN 201220115201
Authority: CN
Inventors: 徐东国; 程福志; 丛兵日
Original assignee: WEIHAI JINHONG POLYMER CO Ltd
Current assignee: WEIHAI JINHONG POLYMER CO Ltd
Priority date: 2012-03-26
Filing date: 2012-03-26
Publication date: 2012-12-19
Anticipated expiration: 2022-03-26

Abstract

The utility model provides a continuous flash fluidized drying bed for drying chlorinated polyethylene, comprising a flash drying device and a continuous fluidized bed. The continuous flash fluidized drying bed for drying chlorinated polyethylene is characterized in that four drying chambers which are respectively imported with air with different temperatures are arranged at the bottom of the continuous fluidized bed; and in each drying chamber, the air enters into the drying chamber through four distributors and a drying bed pore plate. Through the continuous fluidized bed, the softening and caking of chlorinated polyethylene can be effectively prevented, the production period is short, the labor intensity is low, the energy consumption is low and the realization of automatic operation is easy.

Description

Dry chlorinatedpolyethylene is with successive flash vaporization formula boiling-bed drying

Technical field

The present invention relates to a kind of chlorinatedpolyethylene drying plant.

Background technology

In the production process of chlorinatedpolyethylene; Present drying process mainly adopts air stream drying to add the intermittent type fluidised bed drying; Be specially, the material after centrifugal gets in the airflow drying tube through feeder, and air gets into the bottom of airflow drying tube after by steam heating through interchanger; The high speed hot gas flow quickens the powder shape wet stock of adding and is suspended in the air-flow dispersedly; Air-flow quicken and the process of carrying in accomplish drying to the wet stock surface-moisture, the material that surface-moisture partly is removed gets in the fluidized bed dryer, air is sent into the fluidized-bed bottom through interchanger after by steam heating and is contacted with solid materials through grid distributor; Form fluidized, the caloic that reaches the gas-solid phase exchanges; Though adopt the dry chlorinatedpolyethylene of this kind mode can reach product requirement; But because the powdery chlorinatedpolyethylene is prone to softening the caking when surpassing 65 ℃, very easily make the bed caking and dead bed, need the fluidised bed drying temperature of continuous adjustment chlorinatedpolyethylene during production; So the production cycle is long; Labour intensity is big, and energy consumption is high, operation inconvenience.

Summary of the invention

To the deficiency that prior art exists, the present invention provide a kind of effectively prevent the softening caking of chlorinatedpolyethylene, with short production cycle, labour intensity is little, energy consumption is low and the dry chlorinatedpolyethylene that easily is automated operation with successive flash vaporization formula boiling-bed drying.

For accomplishing above-mentioned task; Technical solution of the present invention is achieved in that a kind of dry chlorinatedpolyethylene is with successive flash vaporization formula boiling-bed drying; Comprise expansion drying device and continuous fluidized bed, it is characterized in that continuous fluidized bed bottom is provided with four kilns that feed the differing temps air respectively; In each kiln, air all gets into kiln via four dividers and drying bed orifice plate.

Fluidized-bed layer top is provided with the dividing plate that intercalation at interval distributes, material in the bed upper edge S shape line flows through kiln.

Four kilns, according to apart from expansion drying device order from the close-by examples to those far off, the AT that feeds successively is 110 ℃-130 ℃, 130 ℃-150 ℃, 120 ℃-140 ℃, 30 ℃-60 ℃.

Among the present invention, continuous fluidized bedly be divided into four kilns, get into the air of differing temps respectively, eliminated the condition of the softening caking of powdery chlorinatedpolyethylene, avoid the bed caking and cause dead bed; Air gets into fluidising chamber through corresponding divider and fluidized-bed orifice plate; Contact with chlorinatedpolyethylene material on resting on orifice plate at this, form fluidized, moisture is evaporated rapidly; Material is S-shaped four kilns of flowing through on bed; Effectively prolonged the time of drying of material, the massfraction of water meets the chlorinatedpolyethylene moisture requirement less than 0.3% in the product of dry back; The employing continous way is produced, and is with short production cycle, labour intensity is little, energy consumption is low, easily is automated operation.

Description of drawings

Fig. 1 is the structural representation vertical view of the utility model.

Fig. 2 is the A-A face sectional view of Fig. 1.

Fig. 3 is among the present invention, material in the bed upper edge S shape line flows through the conspectus of kiln.

Embodiment

Below in conjunction with accompanying drawing the utility model is done further detailed explanation.

Embodiment 1; A kind of dry chlorinatedpolyethylene with reference to Fig. 1, Fig. 2, shown in Figure 3, comprises expansion drying device 1 and continuous fluidized bed 2 with successive flash vaporization formula boiling-bed drying; It is characterized in that; Continuous fluidized bed bottom is provided with four kilns 3 that feed the differing temps air respectively, and in each kiln, air all gets into kiln via four dividers 4 and drying bed orifice plate 5.

Fluidized-bed layer top is provided with the dividing plate 6 that intercalation at interval distributes, material in the bed upper edge S shape line flows through kiln.

Four kilns, according to apart from expansion drying device order from the close-by examples to those far off, the AT that feeds successively is 120 ℃, 140 ℃, 130 ℃, 40 ℃.

In the production process, the chlorinatedpolyethylene material at first gets into expansion drying device 1, and the material that is dried to is to a certain degree taken out of from expansion drying device top outlet by air-flow, gets into continuous fluidized bed 2 then; Simultaneously; Extraneous air is sent into steam heater separately by gas blower; And be heated to preset temperature; Get into corresponding kiln 3 through corresponding divider 4 and drying bed orifice plate 5, contact with chlorinatedpolyethylene material on resting on orifice plate 5 at this, mixture formation fluidized is evaporated moisture rapidly; Material is S-shaped four kilns of flowing through successively on bed, discharge fluidized-bed by discharge gate 7 at last, and the tail gas that produces in the process is collected by the retrieving arrangement 8 at fluidized-bed top; The massfraction of water is about 0.25% in the product of dry back, meets the chlorinatedpolyethylene moisture requirement.

Embodiment 2, and a kind of dry chlorinatedpolyethylene is with successive flash vaporization formula boiling-bed drying, and is similar with embodiment 1; Difference is, four kilns are according to apart from expansion drying device order from the close-by examples to those far off; The AT that feeds successively is 110 ℃, 135 ℃, and 125 ℃; 45 ℃, the massfraction of water is about 0.28% in the product of dry back.

Claims

1. a dry chlorinatedpolyethylene is with successive flash vaporization formula boiling-bed drying; Comprise expansion drying device (1) and continuous fluidized bed (2); It is characterized in that: continuous fluidized bed bottom is provided with four kilns (3) that feed the differing temps air respectively; In each kiln, air all gets into kiln via four dividers (4) and drying bed orifice plate (5).

2. a kind of dry chlorinatedpolyethylene according to claim 1 is characterized in that with successive flash vaporization formula boiling-bed drying: fluidized-bed layer top is provided with the dividing plate (6) that intercalation at interval distributes, material in the bed upper edge S shape line flows through kiln.

3. a kind of dry chlorinatedpolyethylene according to claim 1 is with successive flash vaporization formula boiling-bed drying; It is characterized in that: four kilns; According to apart from expansion drying device order from the close-by examples to those far off, the AT that feeds successively is 110 ℃-130 ℃, 130 ℃-150 ℃; 120 ℃-140 ℃, 30 ℃-60 ℃.