CN202643579U - Device for recovering dust in urea particles - Google Patents

Abstract

The utility model belongs to the technical field of urea production, and particularly relates to a device for recovering dust in urea particles. The device comprises a material collector, a feeder, a fluidized bed separation device, a fluidized bed blower, an air duct and a cyclone dust collector, wherein the material collector is arranged at the tail end of an urea particle conveying belt; the feeder is arranged between the material collector and the fluidized bed separation device; the fluidized bed separation device is provided with a closed space and used for ensuring the urea particles fed by the feeder to flow to a bed layer through a bed layer to be output; the fluidized bed blower is connected with the lower part of the bed layer of the fluidized bed separation device and is used for blowing air onto the bed layer of the fluidized bed separation device from bottom to top; the air duct is arranged above the bed layer of the fluidized bed separation device; and the cyclone dust collector is arranged at the tail end of the air duct and comprises a separator and an induced draft fan. The utility model can effectively solve the problems of high dust content of the urea particles formed by a granulation tower and high blanking temperature.

Description

A kind of device that reclaims dust in the urea granules

Technical field

The utility model belongs to the Technology for Urea Production field, is specifically related to a kind of device that reclaims dust in the urea granules.

Background technology

Urea is the highest solid fertilizer of nitrogen content, and prilling tower is the key equipment of producing urea.The urea granules of at present urea prilling tower formation, the problems such as ubiquity particle blanking temperature is high, dust content is large, granularity is less than normal, not only dust content is too high in the prilling tower cat head emptying gas, have a strong impact on peripheral ecotope, and dust is more in the urea granules, has reduced Urea Quality.

Summary of the invention

The purpose of this utility model provides a kind of device that reclaims dust in the urea granules, and is high with the urea granules dust content that solves prilling tower formation, the problem that blanking temperature is high.

For addressing the above problem, the technical solution of the utility model is: a kind of device that reclaims dust in the urea granules, and this device comprises:

A loading head is installed in the end of urea granules conveying belt, is used for collecting from the urea granules of prilling tower;

A feeder is installed between loading head and the fluidized-bed tripping device, is used for the urea granules that loading head is collected is transported to the fluidized-bed tripping device;

Fluidized-bed tripping device with enclosed space, the urea granules that feeder is sent into flow to tailstock output by bed;

A fluidized-bed gas blower is connected with the bed bottom of fluidized-bed tripping device, and air blast on the bed of fluidized-bed tripping device from bottom to top blows afloat the dust in the urea granules that flows on the bed, separates with urea granules;

An air channel is installed in above the bed of fluidized-bed tripping device, is used for collecting the dust that blows out from urea granules;

Tornado dust collector are installed in the end in air channel, comprise separator and induced draft fan, and its induced draft fan makes and produces negative pressure in the separator, will the dust in the air channel suck to collect in the separator to reclaim.

After prilling tower is produced urea granules, by the urea granules conveying belt urea granules is sent to loading head, loading head is transported to product the fluidized-bed tripping device with enclosed space by feeder, urea granules moves at the fluidized-bed tripping device, flow to tailstock output by bed, directly pack; The fluidized-bed gas blower of while fluidized-bed tripping device below, from bottom to top to the air blast of fluidized-bed tripping device bed, make urea granules and dust separation, the dust after the separation is by the air channel of fluidized-bed tripping device top and the tornado dust collector centralized collection of air channel end.

The beneficial effects of the utility model: reduced the temperature of the urea granules of prilling tower production, so that urea granules is packaged into bag; Improved the quality of urea product; Reduce the content of dust in the emptying gas, reduced atmospheric pollution; The dust that reclaims simultaneously can carry out second stage employ, has reduced waste.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Embodiment

As shown in Figure 1, a kind of device that reclaims dust in the urea granules, comprise a loading head 1 that is installed in urea granules conveying belt end, fluidized-bed tripping device 2 with enclosed space, fluidized-bed tripping device 2 is connected by feeder 3 with loading head 1, and fluidized-bed tripping device 2 tops are provided with air channel 3, and the bottom is provided with fluidized-bed gas blower 4, the end in air channel 3 is equipped with tornado dust collector, and tornado dust collector comprise separator 51 and induced draft fan 52.

During use, the urea granules that the urea granules tape transport contains a large amount of dust enters loading head, urea granules in the loading head enters the fluidized-bed tripping device by feeder, contain the urea product of dust under the effect of the fluidized-bed gas blower below the fluidized-bed tripping device, urea granules and dust separation; Urea granules is packaged into bag after separating along with fluidized-bed is transported, and dust is then processed by the tornado dust collector centralized collection of air channel and air channel end.

Claims (1)

1. device that reclaims dust in the urea granules is characterized in that described device comprises:

A loading head is installed in the end of urea granules conveying belt, is used for collecting from the urea granules of prilling tower;

A feeder is installed between loading head and the fluidized-bed tripping device, is used for the urea granules that loading head is collected is transported to the fluidized-bed tripping device;

Fluidized-bed tripping device with enclosed space, the urea granules that feeder is sent into flow to tailstock output by bed;

A fluidized-bed gas blower is connected with the bed bottom of fluidized-bed tripping device, and air blast on the bed of fluidized-bed tripping device from bottom to top blows afloat the dust in the urea granules that flows on the bed, separates with urea granules;

An air channel is installed in above the bed of fluidized-bed tripping device, is used for collecting the dust that blows out from urea granules;

Tornado dust collector are installed in the end in air channel, comprise separator and induced draft fan, and its induced draft fan makes and produces negative pressure in the separator, will the dust in the air channel suck to collect in the separator to reclaim.

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