Double-bag dust removal and powder spraying oil removal system

Abstract

The utility model relates to the technical field of double-cloth-bag dust removal and powder spraying oil removal systems, and discloses a double-cloth-bag dust removal and powder spraying oil removal system which comprises a gas storage tank, a first Roots blower is installed below the gas storage tank, and a first dust remover and a second dust remover are installed on the right side of the first Roots blower respectively. Ash hoppers are mounted at the lower ends of the first dust remover and the second dust remover; and vibrating motors and low level gauges are arranged on the left sides and the right sides of the ash hoppers. According to the double-bag dust removal and powder spraying oil removal system disclosed by the utility model, due to the design of the double bags, the dust remover can be used for simultaneously treating two strands of different dust-containing gases, so that the overall dust removal efficiency is improved; the two sets of cloth bag systems can operate independently or simultaneously, the operation mode is adjusted according to actual requirements, and the adaptability and reliability of the equipment are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of double bag dust collection and powder spraying oil removal system, specifically a double bag dust collection and powder spraying oil removal system. Background Technology

[0002] Currently, waste gas treatment systems lack pretreatment processes. After collection, waste gas directly enters the filter box. The large amount of dust in the waste gas will affect the service life of the filter material, and oily substances in the waste gas will adhere to the rotor through the filter, affecting the rotor's life and even causing gas leaks. This, in turn, affects the waste gas treatment process and causes waste gas emissions to fail to meet standards. Therefore, there is an urgent need for a double bag dust collector plus powder spraying and oil removal system to solve the above technical problems. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution:

[0004] A dual-bag dust collection and powder spraying oil removal system includes an air storage tank. A first Roots blower is installed below the air storage tank, and a first dust collector and a second dust collector are installed to the right of the first Roots blower. Both the first and second dust collectors have ash hoppers at their lower ends, and vibrating motors and low-level gauges are installed on the left and right sides of the ash hoppers. A powder spraying chamber is located to the right of the first dust collector, and a first chamber top dust collector is installed on the upper left side of the powder spraying chamber. A negative pressure dust collector is connected to the upper right side of the powder spraying chamber, and one end of the negative pressure dust collector is connected to the second Roots blower. A waste powder chamber is located below the powder spraying chamber, and a second chamber top dust collector is located on the upper left side of the waste powder chamber. Both the first and second dust collectors are equipped with lifting valves.

[0005] Preferably, the first and second dust collectors are designed for online dust removal and offline cleaning. The equipment consists of two chambers and two bag filters, achieving five in use and one in standby.

[0006] Preferably, the dual-bag dust collector and powder spraying oil removal system is equipped with an air chamber structure, which is cylindrical, with multiple pulse valves on each air chamber and a drain valve at the bottom of the air chamber.

[0007] Preferably, the ash hopper is provided with an inspection manhole on its side.

[0008] Preferably, the ash hopper is designed with a level gauge and a hopper wall vibrator for easy ash discharge, and a rotary unloading valve is installed at the bottom of the ash hopper with externally mounted valve bearings for easy replacement. All bearings inside the system should have pre-drilled oil injection holes for pneumatic conveying to achieve powder recycling.

[0009] Preferably, the ash hopper adopts a large radius of curvature elbow.

[0010] Preferably, the bottom of the first dust collector and the second dust collector are designed with a complete maintenance platform.

[0011] Preferably, the exhaust gas treatment system consisting of the first silo top dust collector, the negative pressure dust collector, and the Roots blower has all platform guardrails with a height of not less than 1200mm, guardrail pipe diameter of not less than φ38×3, ladder width of not less than 800mm, and maintenance platform and steps are made of 4mm thick checkered plate.

[0012] Compared with existing technologies, this utility model has the following advantages: The dual-bag dust collector plus powder spraying and oil removal system of this utility model, the dual-bag design allows the dust collector to handle two different dust-laden gases at the same time, improving the overall dust removal efficiency; the two bag systems can operate independently or simultaneously, and the operation mode can be adjusted according to actual needs, improving the adaptability and reliability of the equipment; the quicklime conveying fan adopts the Roots blower type, which has the characteristics of small flow and high pressure, and the quicklime conveying pipeline adopts a large-diameter elbow to reduce the conveying resistance of the pipeline. Attached Figure Description

[0013] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Figure 1 This is a schematic diagram of the overall structure of the double bag dust collector and powder spraying oil removal system of this utility model;

[0015] Figure 2 This is a partial structural diagram of the double bag dust collector with powder spraying and oil removal system of this utility model;

[0016] Figure 3 This is a partial structural diagram of the double bag dust collector with powder spraying and oil removal system of this utility model;

[0017] Figure 4 This is a partial structural diagram of the double bag dust collector with powder spraying and oil removal system of this utility model;

[0018] Figure 5 This is a partial structural diagram of the double bag dust collector with powder spraying and oil removal system of this utility model;

[0019] In the diagram: 1. Air storage tank; 2. First Roots blower; 3. First dust collector; 4. Second dust collector; 5. Vibrating motor; 6. Low level gauge; 7. First silo top dust collector; 8. Negative pressure powder dust collector; 9. Second Roots blower; 10. Waste powder silo; 11. Second silo top dust collector; 12. Ash hopper; 13. Lifting valve; 14. Powder spraying silo. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. In the embodiments of the present utility model, the different types of cross-sectional lines are not labeled according to national standards, nor do they specify material requirements for the components; they are used to distinguish the cross-sectional views of the components in the drawings.

[0021] Please see Figure 1-5 A dual-bag dust collection and powder spraying oil removal system includes an air storage tank 1. A first Roots blower 2 is installed below the air storage tank 1, and a first dust collector 3 and a second dust collector 4 are installed to the right of the first Roots blower 2. A dust hopper 12 is installed at the lower end of both the first dust collector 3 and the second dust collector 4. A vibrating motor 5 and a low level gauge 6 are arranged on the left and right sides of the dust hopper 12. A powder spraying chamber 14 is arranged to the right of the first dust collector 3, and a first chamber top dust collector 7 is installed on the upper left side of the powder spraying chamber 14. A negative pressure powder-raising dust collector 8 is connected to the upper right side of the powder spraying chamber 14. One end of the negative pressure powder-raising dust collector 8 is connected to the second Roots blower 9. A waste powder chamber 10 is arranged below the powder spraying chamber 14, and a second chamber top dust collector 11 is arranged on the upper left side of the waste powder chamber 10. A lifting valve 13 is installed in both the first dust collector 3 and the second dust collector 4.

[0022] Among them, the first dust collector 3 and the second dust collector 4 are designed for online dust removal and offline dust cleaning. The equipment consists of 3 chambers and two bag dust collectors, realizing five in use and one in standby.

[0023] The dual-bag dust collector with powder spraying and oil removal system is equipped with an air bag structure, which is cylindrical. Each air bag is equipped with multiple pulse valves, and a drain valve is installed at the bottom of the air bag.

[0024] Among them, the side of the ash hopper 12 is provided with an inspection manhole.

[0025] The ash hopper 12 is designed to be equipped with a level gauge and a hopper wall vibrator for easy ash discharge. A rotary unloading valve is installed at the bottom of the ash hopper 12, with the valve bearing externally mounted for easy replacement. All bearings inside the system should have pre-reserved oil injection holes to achieve the recycling of powder materials using pneumatic conveying.

[0026] Among them, hopper 12 adopts a large curvature radius elbow.

[0027] The first dust collector 3 and the second dust collector 4 are designed with complete maintenance platforms at the bottom.

[0028] Among them, the exhaust gas treatment system consisting of the first silo top dust collector 7, the negative pressure dust collector 8, and the Roots blower has a platform guardrail height of no less than 1200mm, a guardrail pipe diameter of no less than φ38×3, a ladder width of no less than 800mm, and the maintenance platform and steps are made of 4mm thick checkered plate.

[0029] The working principle and usage process of this utility model are as follows: When the first dust collector 3 and the second dust collector 4 are working, the dust-laden gas enters the ash hopper 12 through the air duct. The coarse dust falls directly into the bottom of the ash hopper 12, and the fine dust enters the middle and lower chambers with the airflow. The dust accumulates on the outer surface of the filter bags of the first dust collector 3 and the second dust collector 4. The filtered gas enters the clean air chamber. When the pressure difference of the dust collector in the chamber reaches the set value, the lifting valve 13 of the chamber is closed, so that the filter bag in the chamber is in a state of no airflow. Then the pulse valve is activated, and compressed air is used to clean the dust by pulse jet. The shut-off valve closing time meets the dust cleaning requirements. The entire dust cleaning system is fully automatically controlled by PLC.

[0030] After the powder spraying system is started, the first Roots blower 2 is started first, with a blower frequency of about 10HZ. At this time, the production line start signal is transmitted to the oil removal system control program. The powder silo pre-powders the filter unit compartments. When the pressure difference between the compartments reaches the set requirements (generally 800-1200Pa), the next compartment is pre-powdered. After the first unit's 3 single-chamber pre-powdering is completed, the pre-powdering continues to the three compartments of the second filter. After all pre-powdering is completed, the compartment flue gas valves can be opened, and the blower frequency is adjusted to normal operation.

[0031] At this point, the flue gas passes through the powdered filter media and mixes and adheres to the slaked lime on the surface of the filter media. After a period of operation, once the slaked lime has been sufficiently mixed and adhered to the surface, the exhaust gas enters the dry filtration equipment.

[0032] After spraying enough oil into the quicklime powder, the inlet and outlet flue gas valves of the compartment are closed. The quicklime mixed and adhered to the surface of the filter material is blown off by the pulse valve, and the pre-powdering process is carried out again. After the powdering is completed, filtration is carried out. Each compartment is processed in sequence. The blown-off quicklime can be returned to the powder silo for reuse. If it cannot be reused, it is directly sent to the waste silo by the Roots blower for unified recycling and treatment.

[0033] The oil components in the exhaust gas are trapped by the quicklime coating layer. The control systems of the first dust collector 3 and the second dust collector 4 automatically perform offline cleaning based on the pressure difference between the inlet and outlet of the detection compartment. After the system filters and removes oil, the oil reaches the inlet of the pulse dust collector. Quicklime is evenly coated on the surface of the filter bag to form a film, which combines with the tar in the exhaust gas to achieve the purpose of oil removal.

[0034] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0035] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A double-bag dust removal and powder injection oil removal system comprising a gas storage tank (1), characterized in that: The lower position of the gas tank (1) is provided with a first Roots blower (2), and the right side of the first Roots blower (2) is provided with a first dust collector (3) and a second dust collector (4), respectively, the lower end position of the first dust collector (3) and the second dust collector (4) is provided with a dust hopper (12), and the left and right sides of the dust hopper (12) are provided with a rapping motor (5) and a low material level meter (6), the right side of the first dust collector (3) is provided with a powder spraying bin (14), and the upper left side of the powder spraying bin (14) is provided with a first bin top dust collector (7), the upper right side of the powder spraying bin (14) is connected with a negative pressure powder feeding dust collector (8), one end of the negative pressure powder feeding dust collector (8) is connected to a second Roots blower (9), the lower side of the powder spraying bin (14) is provided with a waste powder bin (10), and the upper left side of the waste powder bin (10) is provided with a second bin top dust collector (11), the first dust collector (3) and the second dust collector (4) are provided with a lift valve (13).

2. The dual-bag dedusting and powder spraying oil removal system according to claim 1, characterized in that: The first dust collector (3) and the second dust collector (4) are designed as online dust removal and offline ash cleaning, and the equipment is composed of three chambers, two bag dust collectors, and five uses one standby.

3. The dual-bag dedusting and powder spraying oil removing system according to claim 1, characterized in that: The double-bag dust removal and oil removal system is provided with a gas pocket structure, which is cylindrical, each gas pocket is provided with a plurality of pulse valves, and the bottom of the gas pocket is provided with a blowdown valve.

4. The dual-bag dedusting and powder spraying oil removing system according to claim 1, characterized in that: The side of the dust hopper (12) is provided with an inspection manhole.

5. The dual-bag dedusting and powder spraying oil removing system according to claim 1, characterized in that: The dust hopper (12) is designed to install a material level meter and a cabin wall rapping device, which facilitates ash removal, and a rotary unloading valve is installed at the bottom of the dust hopper (12), the valve bearing is external, which facilitates replacement, and all bearings inside the system should be pre-drilled for oil injection.

6. The dual cloth bag dedusting and powder spraying oil removing system according to claim 1, characterized in that: The dust hopper (12) adopts a large curvature radius elbow.

7. The dual-bag dedusting and powder spraying oil removing system according to claim 1, characterized in that: The bottom of the first dust collector (3) and the second dust collector (4) is designed with a complete maintenance platform.

8. The dual-bag dedusting and powder spraying oil removing system according to claim 1, characterized in that: The first bin top dust collector (7), the negative pressure powder feeding dust collector (8) and the Roots blower constitute a waste gas treatment system, the height of all platform guardrails inside the system is not less than 1200mm, the pipe diameter of the guardrail is not less than φ38x3, the width of the ladder is not less than 800mm, and the thickness of the maintenance platform and the steps is selected to be 4mm thick pattern plate.

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