CN205042132U - New Spray Dryer - Google Patents

Abstract

The utility model discloses a novel spray dryer, which comprises a feeding system, an air supply system, a drying tower, a cyclone separator, an induced draft fan and a water curtain dust collector; The air inlet of the heat exchange chamber is connected with the air inlet of the heat exchange chamber through the pipeline, and the air outlet of the heat exchange chamber is connected with the induced draft fan and the water curtain dust collector in turn. Middle bend through. The new spray dryer of the utility model uses the high-temperature exhaust gas after cyclone separation to preliminarily heat the material, so that the material already has a certain temperature when it is sprayed out, which can shorten the drying time of the material, help heat-sensitive materials maintain quality, and reduce energy consumption. . After heat exchange, the exhaust gas is dedusted by the water curtain and then discharged, which can reduce air pollution.

Description

New Spray Dryer

technical field

The utility model relates to a novel spray dryer, which belongs to the technical field of drying equipment.

Background technique

The spray dryer is a kind of continuous atmospheric pressure dryer. The atomizer is used to disperse the material liquid into mist droplets, and the hot gas is used to dry the mist droplets to obtain the product. The main working process is: fresh air from the outside passes through the air filter, blower , into the air heater to increase the air temperature to about 160°C-230°C, and then send it into the drying tower. Before entering the drying tower, the hot air passes through the air uniform plate to distribute the hot air evenly, prevent the vortex, avoid the occurrence of coke powder, and ensure the drying effect. The material liquid to be dried is pumped to the atomizer by the pressure pump, the material liquid is sprayed out in the form of mist and mixed with hot air, the material particles absorb heat, the water evaporates instantly, and the powder is formed and falls downward. After a period of constant speed drying, The moisture is further evaporated, and the coarse particles fall into the conical bottom of the drying tower and are discharged. The mixture of dried material fine powder and low-temperature humid air is separated by a cyclone separator, the waste air is discharged by an exhaust fan, and the dry fine powder product falls and is continuously discharged by an unloader.

The air after the cyclone separation of the spray dryer still has a high temperature and contains a lot of heat. Direct discharge will not only cause a waste of energy, but also aggravate the global greenhouse effect. Therefore, it is necessary to recycle the heat energy in the separated air.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a new type of spray dryer which reduces energy consumption and saves energy.

The technical solution adopted by the utility model is: a new spray dryer, including a feeding system, an air supply system, a drying tower, a cyclone separator, an induced draft fan and a water curtain dust collector;

The feeding system includes a material tank, a filter, a feeding pump and an atomizer connected in sequence through a material pipeline, and the atomizer is arranged in a drying tower;

The air supply system includes a primary air filter, a blower, a secondary air filter, and a heating device connected in sequence through pipelines, and the heating device is connected to the air inlet pipe of the drying tower;

The drying tower also includes an air outlet pipe arranged on the side, and the air outlet pipe is connected to the air inlet of the cyclone separator through a pipeline;

It also includes a heat exchange chamber, the exhaust port of the cyclone separator is connected with the air inlet of the heat exchange chamber through a pipeline, the air outlet of the heat exchange chamber is connected with the induced draft fan and the water curtain dust collector in sequence, and the feed system The material pipeline between the feed pump and the atomizer bends through the heat exchange chamber.

Preferably, it also includes a cleaning system for the heat exchange chamber. The cleaning system for the heat exchange chamber includes a water tank, a water pump, and a high-pressure water nozzle connected in sequence. the bottom of the heat exchange chamber.

The new spray dryer of the utility model uses the high-temperature exhaust gas after cyclone separation to preliminarily heat the material, so that the material already has a certain temperature when it is sprayed out, which can shorten the drying time of the material, help heat-sensitive materials maintain quality, and reduce energy consumption. . After heat exchange, the exhaust gas is dedusted by the water curtain and then discharged, which can reduce air pollution. Since the material pipe bends through the heat exchange chamber, it is easy to accumulate dust, so a flushing device is installed on the top of the heat exchange chamber to flush the heat exchange chamber and the material pipe when necessary.

Description of drawings

Fig. 1 is the structural representation of the novel spray drier of the present utility model.

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

detailed description

Example 1

As shown in Figure 1, the new spray dryer includes a feeding system, an air supply system, a drying tower, a cyclone separator, an induced draft fan and a water curtain dust collector;

The feeding system includes a material tank 1, a filter 2, a feeding pump 3 and an atomizer 4 connected in sequence through a material pipeline, and the atomizer 4 is arranged in a drying tower 5;

The air supply system includes a primary air filter 6, a blower 7, a secondary air filter 8, and a heating device 9 connected in sequence through pipelines, and the heating device is connected to the air inlet pipe of the drying tower 5;

Described drying tower 5 also comprises the air outlet pipe that is arranged on the side, and described air outlet pipe connects the air inlet of cyclone separator 10 by pipeline;

Also includes a heat exchange chamber 11, the exhaust port of the cyclone separator 10 is connected to the air inlet of the heat exchange chamber 11 through a pipeline, and the air outlet of the heat exchange chamber 11 is connected with the induced draft fan 12 and the water curtain dust collector 13 in turn , the material pipeline 14 between the feed pump 3 and the atomizer 4 of the feed system bends through the heat exchange chamber 11;

It also includes a heat exchange chamber cleaning system, which includes a water tank 15, a water pump 16, and a high-pressure water nozzle 17 connected in sequence, and the high-pressure water nozzle 17 is arranged on the top of the heat exchange chamber 11, and also includes a drain 18, It is arranged at the bottom of the heat exchange chamber 11.

When working, the material is filtered and sprayed into the atomizer. The heated air enters the drying tower and mixes with the mist material. The water in the material particles evaporates, and the large particles fall into the bottom of the drying tower. The exhaust gas is discharged into the cyclone separator for material separation, and the exhaust gas containing a small amount of material particles enters the heat exchange chamber to heat the material in the curved material pipe, resulting in a certain temperature for the material ejected from the atomizer. The exhaust gas discharged from the heat exchange chamber enters the water curtain dust collector under the action of the induced draft fan, and is discharged after dust removal.

Claims (2)

1. a novel atomizing drying machine, comprises feed system, supply air system, drying tower, cyclone separator, air-introduced machine and screen collector;

Described feed system comprises the hopper, filter, feeding engine and the atomizer that are connected successively by material pipe, and described atomizer is arranged in drying tower;

Described supply air system comprises the primary air filter, air blast, after air filter, the heater that are connected successively by pipeline, and described heater is connected with the blast pipe of drying tower;

Described drying tower also comprises the discharge pipe being arranged on side, and described discharge pipe connects the air inlet of cyclone separator by pipeline;

It is characterized in that: also comprise heat-exchanging chamber, the exhaust outlet of described cyclone separator is connected with the air inlet of heat-exchanging chamber by pipeline, the air outlet of described heat-exchanging chamber is connected with air-introduced machine, screen collector successively, and the material pipe between the feeding engine of described feed system and atomizer curves through from heat-exchanging chamber.

2. novel atomizing drying machine according to claim 1, it is characterized in that: also comprise heat-exchanging chamber purging system, described heat-exchanging chamber purging system comprises the water tank, water pump, the high-pressure water nozzle that connect successively, described high-pressure water nozzle is located at heat-exchanging chamber top, also comprise discharge outlet, be arranged at the bottom of described heat-exchanging chamber.