BR102020000881A2 - SYSTEM FOR PRODUCING HOT ASPHALT - Google Patents

Abstract

system for producing hot asphalt the following summary for disclosure refers to the development of a hot asphalt plant mounted on a single fixed chassis (1) with the correct dimensions for transportation in a single marine container (can also be referred to as a shipping container) (8); in this tubular frame chassis, two individual dosing silos attached to the chassis and supported on the dosing mat (s), a rotary dryer, a two-axis pug mil mixer, a closed burner, a fuel pipe, piping bituminous binder, exhaust pipe, bag filter, drag lift and control cabin are arranged.

Description

SYSTEM FOR PRODUCING HOT ASPHALT TECHNICAL FIELD

[001] Disclosure generally refers to the production of asphalt. More particularly, the disclosure generally refers to portable methods and systems for the production of asphalt.

BACKGROUND OF THE INVENTION

[002] Currently, the manufacture of plants basically consists of a mobile semi-trailer, where its demand stems essentially from the need to move the equipment. Since all the systems necessary for the production of bituminous concrete are arranged on a set of wheels, the sets of mobile equipment need various approvals from the inspection bodies for transit on land routes. The change from the transport position to the working position is done with hydraulic cylinders, manually and with the use of a winch truck. However, the practicality of being self-transporting, whether it be a trailer or a self-propelled vehicle, depends on several legal rules so that a wide and long vehicle can travel on the highways.

[003] Therefore, improved mobile systems for the production of hot asphalt are necessary.

SUMMARY OF THE DISCLOSURE

[004] Thus, due to the considerations pertinent to the state of the art previously discussed, it is one of the objectives of the present disclosure described here is to present a hot asphalt plant mounted on a single chassis, which is easy to be transported and does not depend on the legal standards required for the transport of such equipment.

[005] For this purpose, a constructive arrangement was developed in a hot asphalt plant that comprises all components for the manufacture of asphalt mix on a single fixed chassis with dimensions to be transported in a 40-foot marine container (Open Top High Cubes) , that is, it is considered a small plant.

[006] With a production of up to 30 Ton./h it has a constructive disposition aiming to serve countless world markets, facilitating transport and avoiding the homologation of national and international transport legislation.

[007] The following descriptive report for the disclosure refers to the development of a hot asphalt plant mounted on a single fixed chassis with the correct dimensions for transportation in a single transport container; the chassis will be tubular in structure, with two individual dosing silos attached to the chassis and supported on the metering belt (s), a rotary dryer, a two-axis pug mill mixer, a closed burner, a fuel pipe, bituminous binder, exhaust pipe, bag filter, drag lift and a control cabin.

[008] A system for the production of hot asphalt, comprising a hot asphalt plant, is disclosed.

[009] The hot asphalt plant may include a chassis, a first and a second individual dosing silo, dosing belt (s), a rotary dryer, a two-axis pug mill mixer, a drag lift and a control cabin , which can be configured to control the hot mix asphalt plant.

[0010] The first and second individual dosing silos, the dosing conveyor (s), the rotary dryer, a two-axis pug mill mixer, the drag lift and the control cabin can be mounted on the chassis. The hot mix asphalt plant can be configured for transport in, for example, a marine container, that is, having total external dimensions for the entire set, so that the whole set can fit inside a marine container.

[0011] The chassis can have a tubular structure and can be a single fixed chassis.

[0012] The first and second individual dosing silos can be supported on the dosing belt (s) and can be fixed on the chassis. The first and second individual dosing silos can be configured to supply one or more aggregates.

[0013] The rotary dryer can be configured to dry one or more aggregates. The rotary dryer can have a burner, which can be supplied by a fuel line. The burner can be connected to an exhaust pipe, which can have a bag filter.

[0014] The two-axis pug mill mixer can be connected to a bituminous binder pipe, which can inject bitumen into one or more aggregates.

[0015] The drag lift can be placed below the first and second dosing silos. The drag lift can have a synchronizing gear system for one or more mixing axes and the drag lift can be configured to leave hot asphalt.

[0016] In this way, a system for the production of hot mix asphalt comprising a hot asphalt plant designed to fit inside a shipping container is disclosed.

• - a figura 1 é uma modalidade de uma usina dentro de um contêiner;
• - a figura 2 é uma modalidade de uma usina dentro de um contêiner; e
• - a figura 3 é uma modalidade de uma usina dentro de um contêiner, em uma configuração pronta para transportar.

[0017] For a more complete understanding of the nature and objects of the disclosure, reference should be made to the following detailed description, taken in conjunction with the accompanying drawings, in which:

• - figure 1 is a modality of a plant inside a container;
• - figure 2 is a modality of a plant inside a container; and
• - figure 3 is a modality of a plant inside a container, in a configuration ready for transport.

DETAILED DESCRIPTION OF THE DISCLOSURE

[0018] Although the subject claimed is described in terms of certain modalities, other modalities, including modalities that do not provide all the benefits and resources established here, are also within the scope of this disclosure. Various structures, logic, process steps and electronic changes can be made without departing from the scope of the disclosure. Therefore, the scope of the disclosure is defined only by reference to the appended claims.

[0019] The characterization of the present disclosure can be made through representative drawings of a hot asphalt plant mounted on a single fixed chassis for transportation in a single container, so that the product can be fully reproduced using appropriate techniques, allowing characterization of the functionality of the requested object. The container can be a marine container.

[0020] Such drawings are merely illustrative. Other modalities are possible.

[0021] The modalities disclosed here disclose a system for the production of hot mix asphalt, which includes a hot mix asphalt plant, which is sometimes called "plant". With reference to figures 1-3, the plant can include: a chassis with a tubular structure (1), two individual dosing silos (2) and (3) fixed to the chassis (1) supported on a metering belt (s) ( 4), which can also be referred to as a dosing conveyor (s) or conveyor belt (s); a rotary dryer (5), which can also be called an aggregate dryer; a two-axis pug mill mixer, a closed burner (6), fuel pipe, bituminous binder pipe, exhaust pipe (9), bag filter (7), drag lift (12), which can also be called drag lift; a control cabin (11) and compressor (10). Some embodiments may have a conveyor mode (4). Other embodiments may have more than one conveyor mode (4).

[0022] Dosing silos (2, 3) can be responsible for the addition of aggregates that can be used in the preparation of the final product. The dosing silos (2, 3) can be attached to the chassis (1) in the form of an inverted pyramid. The dosing silos (2, 3) can be attached to the chassis (1) supported on dosing mat (s) (4) which can unload the aggregates onto the dosing mat (s), which can then unload the material in the rotary dryer (5).

[0023] The rotary dryer (5) can comprise a cylindrical structure that is supported by rollers that, when in contact with the rotary dryer ring (5), can promote the rotation of the structure.

[0024] The rotary dryer (5) can have a set of fins on the internal surface to promote drying of the aggregates.

[0025] The aggregates can be placed in a drying zone, where they can receive thermal energy from the burner (6). The exhaust of the gases derived from the combustion process of the burner can be carried out by an exhaust fan, through a bag filter (7). The bag filter (7) can be configured in such a way that the exhaust system, for example, emits less than 20 mg / Nm3 of impurities into the environment, thus meeting particle emission standards.

[0026] The mixer works with two axes of rotating blades that are driven through a set of geared motors synchronized through a gearbox. The mixture of aggregates from the dryer (5), the particulate recovered from the bag filter (7) and the bitumen can be incorporated or combined. The asphalt mass can then be directed through an outlet rail to a drag lift (12), where it can be transported to a discharge silo.

[0027] With the previously selected virgin rock material, the asphalt mix production process begins with the dosage of these aggregates. Afterwards, the wet virgin material is directed to the rotary dryer (5), through conveyor belt (s) (4).

[0028] In this type of plant, a burner (6) can be installed in the region opposite the material inlet. The rotary dryer (5), through the drying fins, can add heat transfer to the material.

[0029] After drying and heating the material, it can be directed to a two-axis mixer of the pug mill type. The bitumen injection can be done at this point, resulting from this process the hot asphalt mixture (Hot Mix Asphalt - HMA).

[0030] After this process, the asphalt mix is discharged into trucks or storage silos, through a drag lift (12). The combustion gases of the burner (6), which can be stored inside the rotary dryer (5), together with fine-grained material, and can be directed through an exhaust pipe (9) to the bag filter (7) with the aid of an exhaust fan. The bag filter (7) can serve the purpose of preventing this material from being sent to the atmosphere, so this can be incorporated into the mixer with the aid of a helicoid.

[0031] This whole process takes place on a single chassis (1). The single chassis (1) can be configured to have external dimensions, in order to be transported in, for example, a marine container (8). The plant can be configured in such a way that the control of the whole process can be done via a control cabin (11).

[0032] All control of the asphalt plant can be done in a control cabin (11). The plant that has the external dimensions to be able to be transported in a marine container (8), can also be made through a control cabin (11). The control cabin (11) can have interface software and the control cabin (11) can be acoustically and thermally insulated.

[0033] The steps of the method described in the various embodiments and examples disclosed here are sufficient to carry out the methods of the present invention. Thus, in one embodiment, the method essentially consists of a combination of the steps of the methods disclosed here. In another embodiment, the method consists of such steps.

[0034] Although the present disclosure has been described in relation to one or more particular modalities, it will be understood that other modalities of this disclosure can be made without departing from the scope of this disclosure. Therefore, the present disclosure is considered limited only by the appended claims and the reasonable interpretation of them.

Claims (1)

SYSTEM FOR THE PRODUCTION OF ASPHALT, comprising a plant for the production of asphalt, characterized by:

• a) - a chassis (1) having a tubular structure, where the chassis (1) is a single fixed chassis;
• b) - a first individual dosing silo (2) and a second individual dosing silo (3), in which the first and second individual dosing silos (2, 3) are supported on a dosing mat (s) (4) , where the first and second individual donor silos (2), 3) are attached to the chassis and where the first and second individual dosing silos (2, 3) are configured to provide one or more aggregates;
• c) - a rotary dryer (5) configured to dry one or more aggregates, the rotary dryer (5) having a burner (6) supplied by a fuel pipe, the burner being connected to an exhaust pipe (9) having a bag filter (7);
• d) - a two-axis pug mill mixer connected to a bituminous binder pipe to inject bitumen into one or more aggregates;
• d) - drag elevator (12) disposed below the first and second individual dosing silos (2,3), the drag elevator (12) having a synchronizing gear system for one or more mixing axles, in which the drag elevator (12) is configured to leave hot asphalt; and
• e) - a control cabin (11) configured to control the hot asphalt plant; and where the first and second individual dosing silos (2, 3), the dosing mat (es) (4), the rotary dryer (5), two-axis pug mill mixer, the drag lift (12) and the control cabin (11) are mounted on the chassis (1); and where the hot asphalt plant is configured for transportation in a marine container (8).

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