BR102017020063A2 - MODULAR MOBILE OVEN, BURNING SYSTEM AND BURNING SYSTEM OPERATION METHOD - Google Patents

Abstract

The present invention describes a modular mobile furnace with a forced exhaust system. Specifically, the present invention comprises a modular mobile furnace in which its modules comprise individual exhaust channels that connect to a forced exhaust system provided with a pump, capable of regulating the flow of gases through it, allowing control of the curve. firing in the oven. The present invention is situated in the fields of mechanical engineering, aimed at the thermodynamic area involved in the burning of ceramic materials.

Description

Invention Patent Descriptive Report

Modular Furnace, Burning System and Burning System Operation Method

Field of Invention [0001] This report includes knowledge, information and / or confidential data that can be used in industry, commerce or the provision of services, for which the holder requires: the protection established in item XXIX of Art. 5 of the Federal Constitution; maintaining the legal status of confidentiality / secrecy; maintaining the physical status of confidentiality / secrecy for the time provided for in Law 9,279 / 96, Industrial Property Law; and the rights provided for in Article 195 of Law 9.279 / 96. The present invention describes a firing system equipped with a mobile modular oven with forced exhaustion, more specifically in the fields of mechanical engineering, focused on the thermodynamic area involved in the burning of ceramic materials.

Background of the Invention [0002] The production of ceramic pieces has a great representation in the civil construction market, this application is called red ceramic and involves the manufacture of bricks, blocks, hollow elements, slabs, tiles and ceramic tubes.

[0003] The main stage of the production of ceramic pieces is related to the burning and drying of such pieces. Large-scale furnaces are used for the firing process, which have been improved so that greater efficiency and a reduction of gases harmful to the environment are obtained.

[0004] One of the most used ovens is the mobile oven with a sieve. The sieve is a longitudinal underground chamber through which the gases are exhausted, this chamber reduces the thermal efficiency of the firing process, as it increases the volume of dead mass to be heated by the oven.

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The sieve further weakens the base of the oven, preventing the mechanization of loading as it is not able to support the weight of vehicles and other equipment that aid loading.

[0005] Furthermore, the exhaustion provided by the sieve does not occur in a uniform manner, generating variations in temperature and undesirable gas flow inside the oven, reducing the efficiency of the oven and the quality of the parts produced.

[0006] Thus, from what can be inferred from the researched literature, no documents were found anticipating or suggesting the teachings of the present invention, so that the solution proposed here has novelty and inventive activity in view of the state of the art.

[0007] Thus, there is still a need to search for more efficient and less polluting furnaces, considering that efficiency reduces the costs involved in production, increasing profit, reducing the final price of the product, and the emission of pollutants already it is something that can create impediments in some countries.

Summary of the Invention [0008] Thus, the present invention aims to solve the constant problems in the state of the art from a modular mobile oven equipped with a forced exhaust system that creates a homogeneous flow of gases inside the oven, which improve the efficiency of the oven and the quality of the products obtained. In addition, the present invention features a firing system provided with the furnace of the present invention and a method of operating said firing system.

[0009] In a first object, the present invention presents a modular mobile oven (1), with at least two operating positions, comprising union of modules (1.1) of metallic structure in a 'U' shape with internal thermal insulating coating and a furnace (1.2), the furnace (1) having: a movement system; a central

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Hydraulic and electronic 3/11 (1.3); and a door (1.5) at each end, said oven (1) comprising a horizontal exhaust duct (4) with perpendicular bypass (4.1) and:

- comprises a forced exhaust system with at least:

The. primary piping (2.1);

B. secondary piping (2.2);

ç. flow direction device (2.4);

d. at least one pump (2.3); and

and. a frequency inverter;

- where each module (1.1) comprises at least:

The. suction nozzles;

B. hood (3.1); and

ç. vertical duct (3.2);

being that,

- the frequency inverter comprising pump flow control (2.3);

- the secondary pipes (2.2) are associated with the entrance of the flow direction device (2.4);

- the pump inlet (2.3) is associated with the flow direction device and the pump outlet (2.3) is associated with the primary piping (2.1);

- the secondary pipes (2.2) comprise entries positioned in each operating position of the oven;

- the suction nozzles of the modules (1.1) pass through the metallic structure and the insulating coating, fluidly communicating the interior of the oven (1) to the hoods (3.1);

- the hoods (3.1) are associated with a vertical duct (3.2), which are associated with the horizontal duct (4); and

- the perpendicular bypass (4.1) of the horizontal duct (4) is associated with secondary pipes (2.2).

[0010] In a second object, the present invention features a firing system comprising the modular mobile oven (1) described in this

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4/11 report, an automatic feeding system (5) and a gas washing system (6).

[0011] In a third object, the present invention presents a method of operating a ceramic firing system equipped with a modular mobile oven (1), the system being in accordance with the system of claims 4 and 5 and comprising the following steps:

The. supplying a load in an oven operating position;

B. opening the oven doors (1.5) (1);

ç. moving the oven (1) over the load to the filled operating position;

d. closing the doors (1.5);

and. regulation of the furnaces (1.2) and the forced exhaust system;

f. burning and drying the cargo; and

g. opening the doors (1.5);

the method of operation is cyclical and the operation of supplying a load to a second operating position can be carried out simultaneously with the other steps.

[0012] Still, the inventive concept common to all the protection contexts claimed is about a mobile modular oven, a firing system and a firing system operation method that comprise a forced exhaust system that generates a homogeneous flow of gases inside the oven, improving the internal temperature distribution, increasing the efficiency of the oven and generating better quality products and lower production costs.

[0013] These and other objects of the invention will be immediately valued by those skilled in the art and by companies with interests in the segment, and will be described in sufficient detail for their reproduction in the description below.

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Brief Description of the Figures [0014] The following figures are presented:

[0015] Figure 1 shows a perspective view of an embodiment of the mobile oven of the present invention, comprising a mobile oven formed by 7 modules, system of supply, exhaust and washing of gases.

[0016] Figure 2 shows another angle of view of the embodiment of figure 1.

[0017] Figure 3 shows an embodiment formed by the union of three modules.

[0018] Figure 4 shows the embodiment of figure 2 presented in a different angle of view.

Detailed Description of the Invention [0019] The following descriptions are presented by way of example and are not limited to the scope of the invention and will make the object of the present patent application more clearly understood.

[0020] In a first object, the present invention presents a modular mobile oven (1), with at least two operating positions, comprising union of modules (1.1) of metallic structure in 'U' shape with internal thermal insulating coating and a furnace (1.2), the furnace (1) having: a movement system; a hydraulic and electronic central (1.3); and a door (1.5) at each end, said oven (1) comprising a horizontal exhaust duct (4) with perpendicular bypass (4.1) and:

- comprises a forced exhaust system with at least:

f. primary piping (2.1);

g. secondary piping (2.2);

H. flow direction device (2.4);

i. at least one pump (2.3); and

j. a frequency inverter;

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- where each module (1.1) comprises at least:

d. suction nozzles;

and. hood (3.1); and

f. vertical duct (3.2);

being that,

- the frequency inverter comprising pump flow control (2.3);

- the secondary pipes (2.2) are associated with the entrance of the flow direction device (2.4);

- the pump inlet (2.3) is associated with the flow direction device (2.4) and the pump outlet (2.3) is associated with the primary piping (2.1);

- the secondary pipes (2.2) comprise entries positioned in each operating position of the oven;

- the suction nozzles of the modules (1.1) pass through the metallic structure and the insulating coating, fluidly communicating the interior of the oven (1) to the hoods (3.1);

- the hoods (3.1) are associated with a vertical duct (3.2), which are associated with the horizontal duct (4); and

- the perpendicular bypass (4.1) of the horizontal duct (4) is associated with secondary pipes (2.2).

[0021] The modular mobile oven (1) is formed by the association of at least one module (1.1), in one embodiment the oven is formed by at least three modules (1.1), which have a U-shaped metal structure with length standardized and on rails (1.6), each module (1.1) having an internal thermal insulating coating, a furnace (1.2), suction nozzles that pass through the metallic structure and the insulating coating, hood (3.1) and vertical duct (3.2 ). The suction nozzles are associated with the hood (3.1), which in turn is associated with the vertical duct (3.2), forming an exhaust channel, and the suction nozzles are distributed in order to provide a suction of gases from inside the oven. homogeneously. The modular mobile oven (1) also includes a handling system,

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7/11 a hydraulic and electronic control unit (1.3), a door (1.5) at each end, regardless of the number of modules (1.1), and a horizontal exhaust duct (4) with perpendicular bypass (4.1), with vertical ducts (3.2) of each module (1.1) are associated with the horizontal exhaust duct (4).

[0022] The tracks (1.6) of the oven must be of sufficient size so that the oven (1) comprises at least two operating positions, for example, in an embodiment where the oven (1) has two operating positions, the tracks ( 1.5) must have a length greater than or equal to twice the length of the oven (1).

[0023] The furnace handling system (1) is responsible for moving the furnace (1) between the operating positions, so while the furnace (1) is operating in the first position, the second position can be loaded and at the end of the process carried out in the first position, the oven (1) is opened and moved to the second position where the load is already positioned, generating a cyclic process that keeps the oven without downtime. The movement system comprises a means of movement and means of lifting (17). To move the oven, the lifting means (17) are activated first, and with the oven raised, the movement means are activated by moving the oven on the tracks (1.5).

[0024] The forced exhaust system is equipped with a primary pipe (2.1), at least two secondary pipes (2.2), a flow direction device (2.4), a pump (2.3) and a frequency inverter. The secondary pipes (2.2) are associated with the inlet of the flow directing device (2.4), with each secondary pipe (2.2), the flow directing device (2.4) being then associated with the pump inlet (2.3) and the pump outlet (2.3) is associated with the primary piping (2.1). The frequency inverter is associated with the pump (2.3), enabling the control of the pump flow (2.3), consecutively controlling the flow of gases leaving the oven (1).

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8/11 [0025] The forced exhaust system comprises at least two secondary pipes (2.2), however for cases in which the mobile oven has more than two operating positions, as many secondary pipes (2.2) as necessary are added. During the operation of the oven (1), the flow direction device (2.4) associated with the pump (2.3) directs the flow of gases to the secondary pipe (2.2) in use, sealing the passage of gases through the secondary pipes that are not connected to the oven (1), that is, only the passage for the secondary pipe (2.2) associated with the oven (1) remains open.

[0026] In one embodiment, the flow direction device used is a direction damper.

[0027] The coupling and sealing between the perpendicular bypass (4.1) of the horizontal exhaust duct (4) and the secondary piping (2.2) occurs by mechanical process during the descent of the oven (1) in the operating positions.

[0028] In one embodiment, the internal thermal coating is a ceramic fiber coating.

[0029] In one embodiment, the pump (2.3) used in the exhaust system is a centrifugal exhaust fan.

[0030] The forced exhaust system allows homogeneous suction of gases inside the oven (1), improving the load burning process, obtaining better quality products and decreasing losses related to the process. Furthermore, with the elimination of the sieve system used by the state of the art, mechanized loading of the oven becomes possible (1), since the oven remains on a solid base that supports the weight of the transport equipment, for example, forklifts .

[0031] In preferred embodiments, the oven of the present invention is provided with 3, 5 or 7 modules.

[0032] In a second object, the present invention features a firing system comprising the modular mobile oven (1) described in this report, an automatic feeding system (5) and a washing system

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9/11 gases (6).

[0033] In one embodiment, the supply system (5) and the forced exhaust of the oven are controlled by PLC, as this makes it possible to control the burning curve and threshold depending on the load and fuel used.

[0034] In a third object, the present invention presents a method of operating a ceramic firing system equipped with a modular mobile oven (1), the system being in accordance with the system of claims 4 and 5 and comprising the following steps:

The. supplying a load in an oven operating position;

B. opening the oven doors (1.5) (1);

ç. moving the oven (1) over the load to the filled operating position;

d. closing the doors (1.5);

and. regulation of the furnaces (1.2) and the forced exhaust system;

f. burning and drying the cargo; and

g. opening the doors (1.5);

the method of operation is cyclical and the operation of supplying a load to a second operating position can be carried out simultaneously with the other steps.

[0035] The regulation of the furnaces (1.2) and the exhaust system is an important step for the furnace (1) to be able to operate at maximum efficiency, for that parameters are regulated such as the amount of fuel used, the oxygenation of the combustion, pump flow (2.3), among others. The regulation of the flow rate of the pump (2.3) of the present invention allows the precise control of the burning curves of the process, a fact that it was not possible to obtain in the state of the art furnaces equipped with a sieve. Furthermore, with the use of the forced exhaust system of the present invention, a homogeneous gas flow is obtained inside the oven, homogenizing the

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10/11 distribution of temperatures inside the oven and improving the quality of the firing process, which consecutively results in better quality products and reduced production costs.

[0036] The movement of the furnace (1) occurs between the operating positions, while during the elevation of the furnace (1) the decoupling of the perpendicular bypass (4.1) of a secondary exhaust pipe (2.2) occurs simultaneously, the same occurs for the descent of the oven that occurs simultaneously with the coupling of the perpendicular bypass (4.1) to a secondary exhaust pipe (2.2).

Example 1. Preferential Realization [0037] The examples shown here are intended only to exemplify one of the countless ways of carrying out the invention, however without limiting the scope of it.

[0038] Based on the teachings of the present invention, a firing system equipped with the oven described in this report, an automatic feeding system and a gas washing system were produced, the automatic feeding system (5) being associated with the furnace furnaces modular mobile (1) and the gas washing system associated with the forced exhaustion of the modular mobile oven (1).

[0039] The automatic feeding system comprises a feed box (10), a feeding spoon (11), a conveyor belt (12), a distribution spoon (13) and a furnace feeder (14).

[0040] The oven of this embodiment was made with seven modules (1.1), with a door (1.5) equipped with a drive system (18) at each end and has two operating positions, consequently presenting two secondary pipes (2.2).

[0041] Each of the seven modules (1.1) comprises a furnace (1.3), suction nozzles, a hood (3.1) and a vertical duct (3.2), with all vertical ducts (3.2) associated with one horizontal exhaust duct (4) with

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11/11 perpendicular derivation (4.1). The perpendicular bypass (4.1) is positioned at the center of the oven length (1).

[0042] In this embodiment the gas washing system (6) used is a system for the retention of particulates and gases by wet filter [0043] The inventive concept now revealed and exemplified in one or more ways was treated as an industrial secret and not was previously disclosed until the time of filing this patent application. This industrial secret is immaterial asset of the depositor. The eventual future publication of the patent application does not in itself constitute authorization for use by third parties, serving only as: (i) informing third parties of the existence of the aforementioned industrial secret on the filing date; (ii) unequivocal indication of its holder; and (iii) encouraging the development of new improvements based on the concept now revealed, to avoid reinvestment in the development of the same asset already held by the depositor. It is immediately warned that any commercial use requires authorization from the holder and that the unauthorized use entails sanctions provided for by law. In this context, it is clear from the outset that from the revelation of the present inventive concept, those versed in art may consider other forms of to carry out the invention not identical to those merely exemplified above, but that in the event of a claim for commercial use such forms may be considered to be within the scope of the appended claims.

Claims (9)

Claims 1. The protection, within the scope of item XXIX of article 5 of the federal constitution, of industrial creation characterized by being substantially as described on pages 1 to 11 of this report, as well as in the claims, summary and figures. 2. The maintenance of the secret of industrial creation characterized by being substantially as described on pages 1 to 11 of this report, as well as in the claims, summary and figures. 3. Modular mobile oven (1), with at least two operating positions, comprising union of modules (1.1) of metallic structure in a 'U' shape with internal thermal insulating coating and a furnace (1.2), the oven ( 1) equipped with: a handling system; a hydraulic and electronic central (1.3); and a door (1.5) at each end, said oven (1) being characterized by the fact that it comprises a horizontal exhaust duct (4) with perpendicular bypass (4.1) and: - understand a forced exhaust system with at least: The. primary piping (2.1); B. secondary piping (2.2); ç. flow direction device (2.4); d. at least one pump (2.3); and and. a frequency inverter; - where each module (1.1) comprises at least: g. suction nozzles; H. hood (3.1); and i. vertical duct (3.2); being that, - the frequency inverter comprising pump flow control (2.3); - the secondary pipes (2.2) are associated with the entrance of the flow direction device (2.4); Petition 870170070211, of 9/19/2017, p. 17/26 2/3 - the pump inlet (2.3) is associated with the flow direction device and the pump outlet (2.3) is associated with the primary piping (2.1); - the secondary pipes (2.2) comprise entries positioned in each operating position of the oven; - the suction nozzles of the modules (1.1) pass through the metallic structure and the insulating coating, fluidly communicating the interior of the oven (1) to the hoods (3.1); - the hoods (3.1) are associated with a vertical duct (3.2), which are associated with the horizontal duct (4); and - the perpendicular bypass (4.1) of the horizontal duct (4) is associated with secondary pipes (2.2). Modular mobile oven (1) according to claim 3, characterized in that the pump (2.3) used is a centrifugal extractor. Modular mobile oven according to any one of claims 3 and 4, characterized in that the internal thermal insulating coating is a ceramic fiber coating. 6. Firing system characterized by comprising a modular mobile oven (1), defined according to claims 3 to 5, an automatic feeding system (5) and a gas washing system (6), being the automatic feeding system ( 5) associated with the furnaces of the modular mobile oven (1) and the gas washing system associated with the forced exhaustion of the modular mobile oven (1). 7. Firing system according to claim 6, characterized in that the automatic feeding system (5) and the forced exhaust system are controlled by PLC. 8. Method of operation of a ceramic firing system equipped with a modular mobile oven (1) characterized by the system being as defined in claims 6 and 7 and comprising the following steps: The. supplying a load in an oven operating position; Petition 870170070211, of 9/19/2017, p. 18/26 3/3 B. opening the oven doors (1.5) (1); ç. moving the oven (1) over the load to the filled operating position; d. closing the doors (1.5); and. regulation of the furnaces (1.2) and the forced exhaust system; f. burning and drying the cargo; and g. opening the doors (1.5); the method of operation is cyclical and the operation of supplying a load to a second operating position can be carried out simultaneously with the other steps. Method according to claim 8 characterized by the step of moving the modular mobile oven (1) comprising the steps of: The. raising the oven (1) and uncoupling the perpendicular bypass (4.1) from a secondary exhaust pipe (2.2); B. longitudinal movement of the oven (1) on the rails to an operating position; and ç. lowering the oven and coupling the perpendicular bypass (4.1) to a secondary exhaust pipe (2.2).