Factory asphalt mixture mixing plant dust collection device
By introducing inertial dust removal, bag dust removal and flue gas purification mechanisms into the dust collection device of the asphalt mixture mixing building, the air pollution problem caused by direct flue gas emission in the prior art is solved, and effective dust removal and purification of flue gas is achieved.
Patent Information
- Application Number
- CN202323565775.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The dust collection device of the existing asphalt mixture mixing building discharges the dust-removed flue gas directly into the atmosphere, resulting in air pollution.
A dust collection device for the asphalt mixture mixing building of the factory was designed, including flue gas collection pipeline, inertial dust removal mechanism, bag dust removal mechanism and flue gas purification mechanism. The flue gas purification mechanism consists of a flue gas condensation unit, a flue gas adsorption unit and a photolysis purification unit. These mechanisms are used to dust and purify the flue gas.
Through the use of this device, the flue gas can be purified while dust removal, so that the flue gas emitted to the atmosphere will no longer be polluted, effectively reducing the harm to the environment.
Smart Images
Figure CN222489456U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of asphalt mixing, and in particular to a dust collecting device for an asphalt mixture mixing plant in a factory. Background Art
[0002] Asphalt mixture mixing station is a complete set of equipment for producing asphalt mixture, with an overall height of more than 20 meters. The main body includes cold material bin, feeding belt, drying drum, hot aggregate elevator, vibrating screen, hot material extension bin, hot material bin, mixing tank, dust removal system, powder extension bin, powder recovery bin, control system, etc. In the production process of asphalt mixture, asphalt needs to be heated to 150-170℃, and the temperature of the mixed asphalt mixture is usually 140-160℃. In the production process, the asphalt mixture mixing station will produce a large amount of asphalt fume and dust; asphalt fume contains a variety of organic substances, such as benzopyrene, benzanthracene, carbazole and other polycyclic aromatic hydrocarbons, and most of them are carcinogenic or strong carcinogenic substances; at the same time, dust is easily inhaled into the lungs by operators, which is very harmful to the human body.
[0003] As the asphalt mixing plant will generate a lot of dust during operation, in order to reduce the pollution of dust to the environment and recycle the dust, the asphalt mixing plant is equipped with a dust collection device for dust recovery.
[0004] However, the dust collecting device of the existing asphalt mixing plant generally discharges the dust-removed flue gas directly into the atmosphere, thus causing air pollution. Utility Model Content
[0005] The present application provides a dust collecting device for an asphalt mixture mixing plant in a factory, which is used to solve the problem that the dust collecting device of the existing asphalt mixture mixing plant generally discharges the dust-removed flue gas directly into the atmosphere, thereby causing air pollution.
[0006] The present application discloses a dust collecting device for an asphalt mixture mixing plant in a factory, comprising:
[0007] A smoke collection pipeline, wherein the air inlet of the smoke collection pipeline is connected to the mixing building;
[0008] An inertial dust removal mechanism, wherein the air inlet of the inertial dust removal mechanism is connected to the air outlet of the flue gas collection pipeline;
[0009] A bag dust removal mechanism, wherein the air inlet of the bag dust removal mechanism is connected to the air outlet of the inertial dust removal mechanism;
[0010] A flue gas purification mechanism, wherein the air inlet of the flue gas purification mechanism is connected to the air outlet of the bag dust removal mechanism, and the flue gas purification mechanism comprises a flue gas condensation unit, a flue gas adsorption unit and a photolysis purification unit which are connected in sequence;
[0011] The air suction and exhaust mechanism comprises an induced draft fan, and the air inlet of the induced draft fan is connected to the air outlet of the fume purification mechanism.
[0012] In a feasible implementation manner, the smoke collection pipeline includes a plurality of smoke collection branch pipes.
[0013] In a feasible implementation manner, the flue gas condensation unit comprises a first shell, in which a condenser is arranged.
[0014] In a feasible implementation, an oil collecting tank is provided at the lower end of the flue gas condensation unit, an oil inlet of the oil collecting tank is connected to the inner cavity of the flue gas condensation unit, and a valve is provided at the oil outlet of the oil collecting tank.
[0015] In a feasible implementation manner, the flue gas adsorption unit includes a second shell, and a plurality of activated carbon filter layers are arranged in the second shell.
[0016] In a feasible implementation manner, the photolysis purification unit includes a third shell, and a plurality of ultraviolet lamp tubes are arranged in the third shell.
[0017] In a feasible implementation, the air suction and exhaust mechanism further includes a smoke exhaust pipe, which is vertically installed at the air outlet of the induced draft fan, and the upper end side wall of the smoke exhaust pipe has a plurality of smoke exhaust ports.
[0018] In a feasible implementation manner, the flue gas condensation unit, the flue gas adsorption unit and the photolysis purification unit are all provided with inspection doors.
[0019] In a feasible implementation manner, the inertial dust removal mechanism, the bag dust removal mechanism, the fume purification mechanism and the air suction and exhaust mechanism are installed on a frame.
[0020] In a feasible implementation manner, the dust outlets of the inertial dust removal mechanism and the bag dust removal mechanism are both connected to a screw conveyor, the screw conveyor is mounted on the frame, and the dust outlet of the screw conveyor is suspended on the frame.
[0021] Compared with the prior art, this application has the following beneficial effects:
[0022] The present application provides a dust collection device for a factory asphalt mixture mixing plant. By setting an inertial dust removal mechanism, a bag dust removal mechanism and a flue gas purification mechanism, and using a combination of multiple flue gas treatment mechanisms, the device can not only remove the dust from the flue gas generated by the asphalt mixture mixing plant, but also purify the flue gas after dust removal, so that the flue gas discharged into the atmosphere will not cause air pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work. Among them:
[0024] Figure 1 A schematic structural diagram of a dust collection device for an asphalt mixing plant in a factory provided in an embodiment of the present application.
[0025] Among them, 1 is the induced draft fan, 2 is the exhaust pipe, 3 is the photolysis purification unit, 4 is the flue gas adsorption unit, 5 is the flue gas condensation unit, 6 is the bag dust removal mechanism, 7 is the inertial dust removal mechanism, 8 is the flue gas collection pipeline, 9 is the screw conveyor, 10 is the oil collecting tank, 11 is the inspection door, and 12 is the rack.
[0026] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.
[0028] It should be noted that in the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical terms or scientific terms used in this application should be understood by people with general skills in the field to which this application belongs. The words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "include" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances. Terms indicating directions or positional relationships such as "up", "down", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the drawings and are merely for the convenience of description. They do not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.
[0029] Figure 1 This is a schematic diagram of the structure of the intelligent dust collection device of the asphalt mixing plant in the factory shown in some embodiments of the present application. Figure 1 The intelligent dust collection device for the asphalt mixing plant in the factory involved in this application is introduced. It should be noted that: Figure 1 This is only an example and does not limit the specific shape and structure of the intelligent dust collection device of the asphalt mixing plant in the factory.
[0030] In some embodiments, see Figure 1 A dust collecting device for an asphalt mixture mixing plant in a factory comprises a smoke collecting pipeline 8, an inertial dust removal mechanism 7, a bag dust removal mechanism 6, a smoke purification mechanism, and an air suction and exhaust mechanism; the air inlet of the smoke collecting pipeline 8 is connected to the mixing plant; the air inlet of the inertial dust removal mechanism 7 is connected to the air outlet of the smoke collecting pipeline 8; the air inlet of the bag dust removal mechanism 6 is connected to the air outlet of the inertial dust removal mechanism 7; the air inlet of the smoke purification mechanism is connected to the air outlet of the bag dust removal mechanism 6, and the smoke purification mechanism comprises a smoke condensation unit 5, a smoke adsorption unit 4 and a photolysis purification unit 3 which are connected in sequence; the air suction and exhaust mechanism comprises an induced draft fan 1, and the air inlet of the induced draft fan 1 is connected to the air outlet of the smoke purification mechanism.
[0031] In this embodiment, by providing an inertial dust removal mechanism 7, a bag dust removal mechanism 6 and a flue gas purification mechanism, a plurality of flue gas treatment mechanisms are used in combination, so that the flue gas generated by the asphalt mixture mixing plant can be dust-removed and the flue gas after dust removal can be purified, so that the flue gas discharged into the atmosphere will not cause air pollution.
[0032] Specifically, the inertial dust removal mechanism 7 is a dust removal device that makes the dust-containing gas collide with the baffle or sharply change the direction of the airflow, and uses the inertial force to separate and capture dust. An inertial dust collector is also called an inertial dust collector. Since the dust particles and gas in the moving airflow have different inertial forces, when the dust-containing gas makes a sharp turn or collides with a certain obstacle, the movement trajectory of the dust particles will be separated, and the device that purifies the gas is called an inertial dust collector or an inertial dust collector. Inertial dust collectors are divided into two types: collision type and rotary type. The former is to install one or more baffles along the direction of the airflow, and the dust-containing gas collides with the baffle to separate the dust particles from the gas. Obviously, the higher the speed of the gas before it hits the baffle, the lower it is after the collision, the less dust it carries, and the higher the dust removal efficiency. The latter is to make the dust-containing gas change direction multiple times and separate the dust during the turning process. The smaller the radius of curvature of the gas turning. The more the turning speed, the higher the dust removal efficiency.
[0033] Specifically, the bag dust removal mechanism 6 is a dry dust removal device, which is suitable for capturing fine, dry non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt, and uses the filtering effect of fiber fabric to filter the dust-containing gas. When the dust-containing gas enters the bag dust collector, the dust with large particles and high specific gravity settles down due to gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, so that the gas is purified.
[0034] Preferably, the smoke collection pipeline 8 includes a plurality of smoke collection branch pipes.
[0035] By setting up multiple smoke collection branches, smoke can be collected from multiple locations where smoke is generated in the asphalt mixture mixing plant, such as the material receiving channel of the main building of the asphalt mixture mixing plant, the air vent of the asphalt tank of the asphalt mixture mixing plant, and other locations.
[0036] Preferably, the flue gas condensation unit 5 comprises a first shell, in which a condenser is arranged.
[0037] Among them, the oily components in the flue gas can be condensed by the condenser, thereby removing the oil and gas components in the flue gas.
[0038] Preferably, an oil collecting tank 10 is provided at the lower end of the flue gas condensation unit 5 , the oil inlet of the oil collecting tank 10 is connected to the inner cavity of the flue gas condensation unit 5 , and a valve is provided at the oil outlet of the oil collecting tank 10 .
[0039] The oil collecting tank 10 can recover the asphalt oil condensed by the condenser, thereby facilitating the recycling of the collected asphalt oil.
[0040] Preferably, the flue gas adsorption unit 4 comprises a second shell, and a plurality of activated carbon filter layers are arranged in the second shell.
[0041] Among them, some harmful gases in the flue gas can be adsorbed by the activated carbon filter layer to purify the harmful gases.
[0042] Preferably, the photolysis purification unit 3 includes a third shell, and a plurality of ultraviolet lamp tubes are arranged in the third shell.
[0043] Among them, ultraviolet lamps are used to utilize the principle of ultraviolet decomposition, ultraviolet rays are used to stimulate the oxidation of gases, and light radiation is combined to treat flue gas. Specifically, high-energy ultraviolet light beams irradiate organic waste gas, quickly crack the molecular bonds of the waste gas, instantly open and change its molecular structure, and produce a series of photolysis and fission reactions, which degrade the organic waste gas into low-molecular chemicals, such as carbon dioxide and water molecules.
[0044] Preferably, the air suction and exhaust mechanism further comprises a smoke exhaust pipe 2 , which is vertically installed at the air outlet of the induced draft fan 1 , and the upper side wall of the smoke exhaust pipe 2 has a plurality of smoke exhaust ports.
[0045] Among them, by providing the smoke exhaust pipe 2, it is convenient to guide the purified smoke to be discharged into the atmosphere.
[0046] Specifically, a cover is provided at the top of the smoke exhaust pipe 2 to protect the smoke exhaust pipe.
[0047] Preferably, the flue gas condensation unit 5 , the flue gas adsorption unit 4 and the photolysis purification unit 3 are all provided with an inspection door 11 .
[0048] Among them, by arranging the inspection door 11 on the flue gas condensation unit 5, the flue gas adsorption unit 4 and the photolysis purification unit 3, the inspection door 11 can facilitate the later maintenance personnel to inspect and maintain the flue gas condensation unit 5, the flue gas adsorption unit 4 and the photolysis purification unit 3.
[0049] Preferably, the inertial dust removal mechanism 7 , the bag dust removal mechanism 6 , the fume purification mechanism and the air suction and exhaust mechanism are installed on the frame 12 .
[0050] Among them, the inertial dust removal mechanism 7, the bag dust removal mechanism 6, the flue gas purification mechanism and the air suction and exhaust mechanism can be installed centrally through the frame 12, so that the dust collecting device has an integrated structure, which is convenient for the deployment and movement of the dust collecting device.
[0051] Preferably, the dust outlets of the inertial dust removal mechanism 7 and the bag dust removal mechanism 6 are both connected to the screw conveyor 9 , the screw conveyor 9 is mounted on the frame 12 , and the dust outlet of the screw conveyor 9 is suspended on the frame 12 .
[0052] Among them, the dust collected by the inertial dust removal mechanism 7 and the bag dust removal mechanism 6 can be conveniently transported through the spiral conveyor 9, so that the dust collected by the inertial dust removal mechanism 7 and the bag dust removal mechanism 6 can be discharged in time and processed uniformly.
[0053] Specifically, the screw conveyor 9 is a machine that uses a motor to drive the screw to rotate and push the material to achieve the purpose of conveying. It has the advantages of simple structure, small cross-sectional area, good sealing, convenient operation, easy maintenance, and convenient closed transportation.
[0054] Specifically, a transfer vehicle may be placed below the dust outlet of the screw conveyor 9 to transfer the output dust.
[0055] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.
[0056] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.
Claims
1. A dust collecting device for an asphalt mixing plant in a factory, characterized in that: include: A smoke collection pipeline, wherein the air inlet of the smoke collection pipeline is connected to the mixing building; An inertial dust removal mechanism, wherein the air inlet of the inertial dust removal mechanism is connected to the air outlet of the flue gas collection pipeline; A bag dust removal mechanism, wherein the air inlet of the bag dust removal mechanism is connected to the air outlet of the inertial dust removal mechanism; A flue gas purification mechanism, wherein the air inlet of the flue gas purification mechanism is connected to the air outlet of the bag dust removal mechanism, and the flue gas purification mechanism comprises a flue gas condensation unit, a flue gas adsorption unit and a photolysis purification unit which are connected in sequence; The air suction and exhaust mechanism comprises an induced draft fan, and the air inlet of the induced draft fan is connected to the air outlet of the fume purification mechanism.
2. A dust collecting device for an asphalt mixing plant in a factory according to claim 1, characterized in that: The smoke collection pipeline includes a plurality of smoke collection branch pipes.
3. The dust collecting device for an asphalt mixing plant in a factory according to claim 1, characterized in that: The flue gas condensation unit comprises a first shell, in which a condenser is arranged.
4. A dust collecting device for an asphalt mixing plant in a factory according to claim 3, characterized in that: An oil collecting box is provided at the lower end of the flue gas condensation unit, an oil inlet of the oil collecting box is connected to the inner cavity of the flue gas condensation unit, and a valve is provided at the oil outlet of the oil collecting box.
5. The dust collecting device for an asphalt mixing plant in a factory according to claim 1, characterized in that: The smoke adsorption unit comprises a second shell, in which a plurality of activated carbon filter layers are arranged.
6. The dust collecting device for an asphalt mixing plant in a factory according to claim 1, characterized in that: The photolysis purification unit shown comprises a third shell, in which a plurality of ultraviolet lamp tubes are arranged.
7. The dust collecting device for an asphalt mixing plant in a factory according to claim 1, characterized in that: The air suction and exhaust mechanism also includes a smoke exhaust pipe, which is vertically installed at the air outlet of the induced draft fan, and a plurality of smoke exhaust ports are arranged on the side wall of the upper end of the smoke exhaust pipe.
8. The dust collecting device for an asphalt mixing plant in a factory according to claim 1, characterized in that: The flue gas condensation unit, the flue gas adsorption unit and the photolysis purification unit are all provided with inspection doors.
9. The dust collecting device for an asphalt mixing plant in a factory according to claim 1, characterized in that: The inertial dust removal mechanism, the bag dust removal mechanism, the fume purification mechanism and the air suction and exhaust mechanism are installed on the frame.
10. A dust collecting device for an asphalt mixing plant in a factory according to claim 9, characterized in that: The dust outlets of the inertial dust removal mechanism and the bag dust removal mechanism are both connected to a screw conveyor, the screw conveyor is installed on the frame, and the dust outlet of the screw conveyor is suspended on the frame.