A wet dust dedusting system

Abstract

The utility model relates to coal dust filter equipment technical field, especially in a kind of humid dust dust removal system, including gas pipeline, the dust remover is communicated and is equipped with in the gas pipeline, the upstream of the dust remover is equipped with temperature rising device, the downstream of the dust remover is communicated and is equipped with heat exchanger, dust gas flow channel and purification gas flow channel are equipped in the heat exchanger, the outlet end of the dust gas flow channel is communicated with the import end of the temperature rising device, the inlet of the purification gas flow channel is communicated with the gas outlet of the dust remover, dust gas and purification gas can carry out heat exchange in heat exchanger. Through the setting of heat exchanger and temperature rising device, the high-temperature purification gas filtered after dust remover is preheated to low-temperature humid dust gas, reduces the overall system energy consumption, can also cool down and discharge high-temperature purification gas, reduces the pollution to environment and the waste of resources.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal dust filter equipment technical field, especially a kind of humid dust dust removal system. BACKGROUND

[0002] At present, a large amount of dust is generated when the dust-containing objects such as coal fall due to the height difference between devices during conveying, and these dusts need to be treated by a dust removal device to reduce pollution and resource waste. In actual use, when facing humid dust gas, the dust is easy to adhere to the surface of the filter material when the dust collector filters the humid dust gas, which blocks the filter holes, resulting in a decrease in the filtering efficiency of the dust collector. Therefore, the filter material needs to be frequently maintained or replaced, which increases the operating cost and downtime. In the prior art, when facing humid dust, hot gas is introduced into the dust collector to dry the dust gas and improve the dust removal efficiency. However, the purified gas is still in a high-temperature state, which directly leads to environmental pollution and resource waste. SUMMARY

[0003] The utility model aims to provide a humid dust dust removal system, which can use the high-temperature purified gas filtered by the dust collector to preheat the low-temperature humid dust gas, reduce the overall system energy consumption, and at the same time, can cool and discharge the high-temperature purified gas to reduce environmental pollution and resource waste.

[0004] To solve the above technical problems, the embodiment of the utility model provides a technical scheme as follows:

[0005] A humid dust dust removal system includes a gas pipeline, the gas pipeline is connected with a dust collector, an upstream of the dust collector is provided with a temperature rising device, a downstream of the dust collector is connected with a heat exchanger, the heat exchanger is internally provided with a dust gas flow channel and a purified gas flow channel, an outlet end of the dust gas flow channel is connected with an inlet end of the temperature rising device, an inlet of the purified gas flow channel is connected with a gas outlet of the dust collector, and the dust gas and the purified gas can exchange heat in the heat exchanger.

[0006] Further, a dust collector is arranged below the dust collector and the temperature rising device.

[0007] Further, the temperature rising device is one of an electric heater, an infrared heater, and a waste heat recovery device.

[0008] Further, temperature sensors are arranged on the upstream and downstream pipelines of the temperature rising device.

[0009] Further, the heat exchanger is a tube-shell heat exchanger or a plate heat exchanger.

[0010] The utility model provides a kind of humid dust dust removal system, relative to prior art, by the setting of temperature rising device, humid dust gas can be dried and heated, can greatly reduce the probability that dust adheres to the surface layer of filter material, block filter hole, improve filter efficiency of dust collector, reduce the frequency of dust collector maintenance and replacement filter material, by the setting of heat exchanger, the heat of high-temperature purifier gas generated after dust gas is filtered by dust collector can be recycled, low-temperature humid dust gas is preheated, it is favorable to reduce the energy consumption of overall system, high-temperature purification gas can be cooled and discharged simultaneously, reduce pollution to environment and waste of resources. BRIEF DESCRIPTION OF DRAWINGS

[0011] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, these illustrative examples do not limit the embodiments, and elements specifically shown in the figures represent like elements, unless otherwise specifically indicated, figures in the drawings do not constitute proportion limit.

[0012] Figure 1 It is a kind of humid dust dust removal system structure schematic diagram in the utility model embodiment;

[0013] Mark explanation:10, heat exchanger;20, temperature rising device;30, dust collector;40, dust collector;50, gas pipeline;51, preheating gas pipe;52, secondary heating gas pipe;53, high-temperature purification gas pipe;11, purification gas flow channel;12, dust gas flow channel. DETAILED DESCRIPTION

[0014] To make the purpose, technical scheme and advantages of the utility model more clear, the various embodiments of the utility model will be described in detail below in conjunction with the drawings.Ordinary skilled in the art can understand that, in the various embodiments of the utility model, many technical details are proposed to make the reader better understand the present application.However, even without these technical details and based on the various changes and modifications of each embodiment, the technical scheme claimed in each claim of the present application can be realized.

[0015] As Figure 1The utility model discloses a kind of humid dust dust removal systems, as shown in an embodiment of the utility model relates to a kind of humid dust dust removal systems, including gas pipeline 50, the gas pipeline 50 is connected with heating device 20 and dust collector 30, humid dust gas is transported by gas pipeline 50, the humid dust gas is heated and dried by heating device 20, then enters dust collector 30 and is filtered and discharged.In a preferred embodiment, the gas pipeline 50 is connected with dust collector 30, the upstream of the dust collector 30 is equipped with heating device 20, and the dust collector 30 and heating device 20 are communicated by secondary heating gas pipe 52, the downstream of the dust collector 30 is connected with heat exchanger 10, the heat exchanger 10 and the dust collector 30 are communicated by high-temperature purification gas pipe 53, the heat exchanger 10 and the heating device 20 are communicated by preheating gas pipe 51, the heat exchanger 10 is equipped with dust gas flow channel 12 and purification gas flow channel 11, the outlet end of the dust gas flow channel 12 and the inlet end of the heating device 20 are communicated by preheating gas pipe 51, the inlet of the purification gas flow channel 11 and the gas outlet of the dust collector 30 are communicated, and the dust gas and purification gas can exchange heat in heat exchanger 10.By the arrangement of heat exchanger 10, the heat of high-temperature purifier gas generated after the dust gas is filtered by dust collector 30 can be recycled, the low-temperature humid dust gas is preheated, which is conducive to reducing the energy consumption of the overall system, and the high-temperature purification gas can be cooled and discharged, reducing environmental pollution and resource waste.

[0016] In an embodiment, a kind of humid dust dust removal systems are related to, the dust collector 30 and heating device 20 below are equipped with dust collector 40, when dust gas passes through heating device 20 and dust collector 30, high-efficiency recovery is carried out to large particle solid in dust by dust collector 40, so as to recycle and improve the utilization rate of resources.

[0017] In an embodiment, a kind of humid dust dust removal systems are related to, wherein heating device 20 uses electric heater, of course, in combination with actual situation, in some embodiments, infrared heating or using waste heat recovery device can also be used as heating device 20.Preferably, temperature sensor 60 is arranged on the upstream and downstream pipe of the heating device 20, by the arrangement of temperature sensor 60, the temperature of dust gas can be monitored in real time, and the consistency of dust gas heating temperature is ensured by timely power adjustment of heating device 20, so that the temperature of dust gas entering dust collector 30 is stable, to prevent the instability or damage of dust collector 30 due to temperature change, which is conducive to increasing the service life of filter material in dust collector 30 and reducing the maintenance frequency of dust collector 30.

[0018] In one embodiment, the heat exchanger 10 is a shell-and-tube heat exchanger 10 or a plate heat exchanger 10, and the heat exchanger 10 can realize heat exchange between the low-temperature moist dust gas and the high-temperature purified gas, realize effective utilization of the high-temperature purified gas resource, and after heat exchange, the temperature of the low-temperature moist dust gas is increased and the temperature of the high-temperature purified gas is reduced, so that the energy consumption of the whole system is reduced, the energy consumption of the heating device 20 is reduced, the high-temperature purified gas can be cooled and discharged, and the pollution to the environment and the waste of resources are reduced.

[0019] In use, the low-temperature moist dust gas enters the heat exchanger 10 from the inlet of the dust gas flow channel 12, and after heat exchange with the high-temperature purified gas, enters the heating device 20 through the preheating gas pipe 51, and after secondary heating of the dust gas by the heating device 20, the relative humidity of the dust gas is reduced, the influence of the condensed water on the dust collector 30 is reduced, and the high-temperature purified gas generated after the dust gas is filtered by the dust collector 30 enters the heat exchanger 10 through the inlet of the purified gas flow channel 11, exchanges heat with the low-temperature dust gas in the moist dust gas flow channel 12, so that the temperature of the high-temperature purified gas is reduced to below 50℃, and is discharged to the natural environment.

[0020] The moist dust dusting system provided by the utility model can dry and heat the moist dust gas through the setting of the heating device, can greatly reduce the probability of dust adhering to the surface layer of the filter material and blocking the filter hole, improve the filtering efficiency of the dust collector, reduce the frequency of maintenance and replacement of the filter material of the dust collector, can recycle the heat of the high-temperature purified gas generated after the dust gas is filtered by the dust collector through the setting of the heat exchanger, preheat the low-temperature moist dust gas, is favorable for reducing the energy consumption of the whole system, can cool and discharge the high-temperature purified gas, and reduces the pollution to the environment and the waste of resources.

[0021] Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the utility model, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the utility model.

Claims

1. A wet dust removal system, characterized in that, The system includes a gas pipeline (50) connected to a dust collector (30), a heating device (20) upstream of the dust collector (30), and a heat exchanger (10) downstream of the dust collector (30). The heat exchanger (10) has a dust gas flow channel (12) and a purified gas flow channel (11) inside. The outlet of the dust gas flow channel (12) is connected to the inlet of the heating device (20), and the inlet of the purified gas flow channel (11) is connected to the gas outlet of the dust collector (30). The dust gas and the purified gas can exchange heat in the heat exchanger (10).

2. The wet dust removal system according to claim 1, characterized in that, A dust collector (40) is provided below the dust collector (30) and the heating device (20).

3. The wet dust removal system according to claim 1, characterized in that, The heating device (20) is one of an electric heater, an infrared heater, or a waste heat recovery device.

4. A wet dust removal system according to claim 1, characterized in that, Temperature sensors (60) are installed on the upstream and downstream pipes of the heating device (20).

5. A wet dust removal system according to claim 1, characterized in that, The heat exchanger (10) is a shell-and-tube heat exchanger (10) or a plate heat exchanger (10).

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