Equipment for treating soot applied to an industrial exhaust system

Abstract

The present invention relates to equipment (10) for treating soot (FL) applied to an industrial exhaust system (SE), such as boilers, industrial chimneys, charcoal furnaces, coffee dryers, stills, hotel chimneys, sugar and alcohol plants, general manufacturing industries, mining companies, steelworks, inter alia, said equipment (10) for treating soot (FL) comprising a nebulising chamber (12) arranged between the exhaust structure (11) and a settling chamber (13), wherein the nebulising chamber (12) receives, on the rear face (12a2), the assembly of nebulisers (12c) forming a mist (NV) of nano-droplets of nebulising fuel (CB) for encapsulating the macro-particles of smoke containing soot (FL) emitted by the exhaust structure (11), thereby forming encapsulated particles (PE) conveyed to the settling chamber (13) by means of piping (TB3) connected to the funnels (12e).

Description

[0001] "Equipment for treating soot applied in industrial exhaust systems."

[0002] TECHNICAL FIELD

[0003] This patent application relates to equipment for treating soot applied in industrial exhaust systems such as boilers, industrial chimneys, coal furnaces, coffee dryers, stills, hotel chimneys, sugar and alcohol plants, general manufacturing industries, mining operations, steel mills, among others. Notably, this equipment presents innovative characteristics, as it includes a nebulization box whose nebulizers generate a mist of nano-droplets responsible for encapsulating the soot particles. This mist is then conducted by an exhaust structure connected to the box, subsequently sending the encapsulated soot to a settling tank responsible for separating the water and soot, thus restarting the treatment cycle and enabling the reuse of the fuel while simultaneously preventing the emission of soot into the environment.

[0004] HISTORY OF THE TECHNIQUE

[0005] Industrial exhaust systems play a crucial role in treating soot, a common byproduct of various industrial processes involving the combustion of diverse materials such as wood, coal, oil, and others. Soot is composed of extremely fine solid particles, predominantly carbon, and represents significant risks to occupational health and the environment. Currently, the market offers a wide variety of solutions for treating soot from exhaust gases in industrial systems. A practical application example is the control of soot generated by exhaust systems in coffee drying machines. In these systems, exhaust fans are used to conduct the smoke-contaminated air from combustion through pipes to a water tank. Inside the tank, the air moves in the form of bubbles that, upon breaking on the surface, release some of the smoke.In this process, soot particles are partially retained on the surface of the bubbles, although smoke emission control is not yet fully efficient. Another relevant solution for soot treatment is described in document no. 9Brazilian patent BR 10.2023.001567-0 details a settling filter consisting of a structural base that supports a storage reservoir for liquid such as water or other suitable liquid, connected to an exhaust pipe for retaining soot from industrial machines and equipment such as boilers, furnaces or similar. Said settling filter provides a filtering honeycomb aligned orthogonally with the reservoir opening and provided with at least one pair of equidistant divisions inside the honeycomb, forming channels that obtain a bellows effect configured by the path of the smoke with repeated collision with the soot retainers installed in an alternating manner in the divisions, associated with repetitive contact with the liquid in the decanted soot reservoir until the smoke is released through the channel to the exhaust pipe and clean air is released into the atmosphere.

[0006] Another document found from n 9Brazilian patent application PI 0616411-0 presents an oil separator, soot collector, gas scrubber, and air deodorizer for barbecue restaurants, industrial kitchens, restaurants, snack bars, oil and wood / coal boilers, hospital incinerators, and similar applications. This equipment consists of a collection / absorption hood and an upward flow directing tube leading to a mechanical flow diffuser, followed by full cone atomizing nozzles and a honeycomb deflector with cascade-type retention contact cells. Next, it passes through a condenser, which can be controlled by the fan's flow valve, before proceeding to the centrifugal exhaust fan. This fan is composed of: an adaptation motor and booster pump, a pump rotor, an electronic frequency reduction system, an exhaust pipe, and a filter / drip breaker box after exhausting at the fan's discharge.

[0007] The aforementioned soot treatment equipment models are not efficient at retaining all the soot, nor do they offer means for reusing the water used in the process. This differs from the present application, as will be seen later. Although they belong to the same field of application, they do not present any of the characteristics of the improved equipment, thus ensuring that it meets the legal requirements for patentability. OBJECTIVES OF THE INVENTION

[0008] The objective of the present invention is to present equipment for soot treatment applied in various industrial exhaust systems, which integrates a nebulization box equipped with a set of nebulizers that form a mist of nano-droplets that encapsulate the macroparticles of smoke, directing them to a settling tank for treatment and subsequent reuse of the water used and restarting of the treatment cycle.

[0009] Another objective of the invention is to present a soot treatment device whose exhaust structure features a hood positioned over the exhaust pipe outlet at the installation site, and which can eliminate the need for a hood for direct installation on the exhaust pipe of the industrial exhaust system at the location where the equipment is installed.

[0010] Another objective of the invention is to present equipment for treating soot by encapsulating the particles present in the smoke, while simultaneously promoting the recycling of the nebulizing fuel used for said encapsulation.

[0011] Another objective of the invention is to present equipment for treating soot, where the nebulizing fuel used to encapsulate the particles can be comprised of water or another liquid / chemical product such as ARLA - Automotive Liquid Reducing Agent - for treating soot from diesel oil or coal.

[0012] Another objective of the invention is to present equipment for treating soot, whereby residue from boiler soot, wood burning, straw and sawdust, captured in the misting box and sent to the settling tank, can be transformed into plant nutrients / fertilizer for crops, pastures and related environments, bringing a financial return to the rural producer through savings in the purchase of fertilizers to supplement plant nutrition.

[0013] Another objective of the invention is to present equipment for soot treatment applied to industrial exhaust systems that uses low water consumption in the process, as well as low electrical energy consumption. Another objective of the invention is to present equipment for soot treatment applied to industrial exhaust systems that, in addition to gases and smoke particles, reduces the emission of materials such as, for example, dust emissions in mining operations.

[0014] Another objective of the invention is to present equipment for treating soot applied in industrial exhaust systems that represents a 97% capture rate of particles concentrated in the smoke from burning coffee straw for drying coffee beans.

[0015] DESCRIPTION OF THE FIGURES

[0016] To complement the present description in order to obtain a better understanding of the characteristics of the present invention and in accordance with a preferred practical embodiment thereof, a set of drawings is attached to the description, where, in an exemplary, although not limiting, manner, its operation is represented: Figure 1 represents a schematic front view of the soot treatment equipment applied to the smoke exhaust outlet of a conventional exhaust system;

[0017] Figure 2 shows a rear perspective view of the soot treatment equipment;

[0018] Figure 3 shows a front perspective view of the soot treatment equipment;

[0019] Figure 4 illustrates a cross-section of the misting box with shaped mist for encapsulating soot particles;

[0020] Figure 5 represents a longitudinal cross-sectional view AA of the equipment, illustrating the smoke path; and

[0021] Figure 6 shows a schematic longitudinal cross-sectional view of the settling tank.

[0022] DETAILED DESCRIPTION OF THE OBJECT

[0023] This invention patent refers to "EQUIPMENT FOR TREATING SOOT APPLIED IN INDUSTRIAL EXHAUST SYSTEMS", equipment (10) for treating soot (FL) applied in industrial exhaust systems (SE) such as boilers, industrial chimneys, coal furnaces, coffee dryers, stills, hotel chimneys, sugar and alcohol plants, general manufacturing industries, mining, steel mills, among others (not illustrated).

[0024] According to the present invention, said equipment (10) for soot treatment (FL) comprises a nebulization box (12) disposed between the exhaust structure (11) and the settling box (13), the nebulization box (12) receiving on its rear face (12a2) the set of nebulizers (12c) forming a mist (NV) (see figure 4) of nano droplets of nebulizing fuel (CB), preferably water, for encapsulation of the macro particles of smoke with soot (FL) emitted by the exhaust structure (11) connected to the industrial exhaust system (SE) of the installation site (not shown) and directing the encapsulated particles (PE) to the settling box (13) by means of piping (TB3) connected to the funnels (12e) for initiating a new treatment cycle.

[0025] Said exhaust structure (11) is formed by a hood (11a) with a ridge connected to the tubular reel (11b) with the opposite end connected to the fan (11c) driven by a motor (lld) that sucks the smoke with soot (FL) conducting it to the interior of the exhaust pipe (lie) connected to the misting box (12).

[0026] The nebulization box (12), in turn, is formed by a body (12a) with an upper opening (12al) provided with a hinged lid (12b) and a rear face (12a2) receiving a set of nebulizers (12c) connected to the vertical pipes (TB2) receiving the nebulizing fuel (CB) coming from the settling box (13) and pumped by a pump (Bl). Between the longitudinal faces (12a2) / (12a3) of the box (12) there is a set of oblique deflectors (12dl) and deflectors at opposite angles (12d2) whose spacing between them forms a serpentine channel (Cl) (see figure 5) through which the smoke with soot (FL) passes until it is encapsulated by mist (NV) for subsequent conduction to one of the funnels (12e) installed on the lower face (12a4) of the box (12).

[0027] Said settling tank (13) directs the nebulizing fuel (CB) to the nebulizers (12c) by means of the suction pipe (TB1) which carries the fuel to the pump (Bl) and directs it to the pipe assembly (TB2), as well as receives the encapsulated particles (PE) of soot (FL) by means of pipe (TB3).

[0028] During the operation of the equipment (10), the nebulizing fuel (CB) stored in the settling tank (13) is propelled by pump (Bl) to the pipe (TB2) for access by the nebulizers (12c), which form the mist (NV) and simultaneously the exhaust structure (11) directs the smoke with soot (FL) to the nebulizing tank (12) for encapsulation of the soot (FL) which is subsequently directed to the funnels (12e) for return to the settling tank (13) by means of pipe (TB3).

[0029] It is understood that when the present invention is put into practice, modifications may be introduced with regard to certain details of construction and form, without departing from the fundamental principles that are clearly substantiated in the claims, it being understood that the terminology used was not intended to be limiting.

Claims

CLAIMS 1) "EQUIPMENT FOR SOOT TREATMENT APPLIED IN INDUSTRIAL EXHAUST SYSTEM", equipment (10) for soot treatment (FL) applied in industrial exhaust systems (SE) such as boilers, industrial chimneys, coal furnaces, coffee dryers, stills, hotel chain chimneys, sugar and alcohol plants, general manufacturing industries, mining, steel mills, among others, characterized by the equipment (10) for soot treatment (FL) comprising a nebulization box (12) disposed between the exhaust structure (11) and the settling box (13), the nebulization box (12) receiving on its rear face (12a2) the set of nebulizers (12c) forming a mist (NV) of nano droplets of nebulizing fuel (CB) encapsulating the macro particles of smoke with soot (FL) emitted by the exhaust structure (11);and which constitute encapsulated particles (PE) directed to the settling tank (13) by means of piping (TB3) connected to the funnels (12e).; 2) "EQUIPMENT FOR TREATING SOOT APPLIED IN INDUSTRIAL EXHAUST SYSTEMS", according to claim 1, characterized in that the nebulizing fuel (CB) is composed of water or another chemical product suitable for forming the mist (NV). 3) "EQUIPMENT FOR SOOT TREATMENT APPLIED IN INDUSTRIAL EXHAUST SYSTEM", according to claim 1, characterized by the exhaust structure (11) being formed by a hood (11a) with a ridge connected to the tubular reel (11b) with the opposite end connected to the fan (11c) driven by a motor (lld) connected to an exhaust pipe (lie). 4) "EQUIPMENT FOR SOOT TREATMENT APPLIED IN INDUSTRIAL EXHAUST SYSTEM", according to claim 1, characterized by a nebulization box (12) being formed by a body (12a) with an upper opening (12a1) provided with a hinged lid (12b) and a rear face (12a2) receiving a set of nebulizers (12c) connected to the vertical pipes (TB2) receiving the nebulizing fuel (CB) pumped by a pump (B1); between the longitudinal faces (12a2) / (12a3) of the box (12) there is a set of oblique deflectors (12d1) and deflectors at opposite angles (12d2) whose spacing between them forms a serpentine channel (Cl1); the lower face (12a4) of the box (12) has a set of funnels (12e) connected to the pipe (TB3). 5) "EQUIPMENT FOR SOOT TREATMENT APPLIED IN INDUSTRIAL EXHAUST SYSTEM", according to claim 1, characterized by a settling tank (13) directing the nebulizing fuel (CB) to the nebulizers (12c) through the suction pipe (TB1) connected to the pump (Bl) and pipes (TB2), as well as receiving the encapsulated particles (PE) of soot (FL) through pipe (TB3).

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