Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/16—Sealings between relatively-moving surfaces
  • F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F27—FURNACES; KILNS; OVENS; RETORTS
  • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
  • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
  • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
  • F27B7/22—Rotary drums; Supports therefor
  • F27B7/24—Seals between rotary and stationary parts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
  • B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
  • B01J8/10—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles or endless belts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/16—Sealings between relatively-moving surfaces
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16J—PISTONS; CYLINDERS; SEALINGS
  • F16J15/00—Sealings
  • F16J15/16—Sealings between relatively-moving surfaces
  • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
  • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
  • F23G5/44—Details; Accessories
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
  • B01J19/0053—Details of the reactor
  • B01J19/0073—Sealings

Definitions

• the present invention is related to thermal expansion self-compensation systems.
• a thermal expansion self-compensation system in rotating cylindrical reactors are related to thermal expansion self-compensation systems.
• the document BR112013008504-5 BI describes a biomass torrefaction system comprising: (i) an inlet to receive the biomass particles; (ii) a drum reactor configured to rotate about an axis of rotation, the drum reactor having a plurality of vanes positioned therein at a plurality of locations along a longitudinal length of the drum reactor, the vanes disposed within the drum at positions and density selected to improve the characteristics of particles resulting from biomass submitted to torrefaction; (iii) a heat source upstream of the drum reactor to heat the gas contained in the system to a temperature sufficient to roast the biomass particles during operation; (iv) a fan device coupled to the system to create, when the system is in operation, a stream of heated gas through the drum reactor sufficient to intermittently transport the biomass particles along the longitudinal length of the drum reactor as the biomass are lifted by the vanes and poured through the heated gas stream, while the drum reactor rotates; (v) and gas ducts coupled to at least the drum reactor, heat source and fan device for re
• US20090007484 A1 describes an apparatus and a process for producing carbonaceous and/or hydrocarbon materials from a biomass composition, the apparatus including: (i) a feed port; (ii) a thermal decomposition assembly including a reactor comprising an inner hollow cylinder, an outer hollow cylinder, one of which is rotatable with respect to the other, both hollow cylinders heated providing heat to the feed composition to convert it to a vapor fraction and a solid residue fraction; (iii) fins mounted to the inner and outer hollow cylinders to move the biomass composition through the thermal decomposition assembly; (iv) at least one steam port for removing the steam fraction containing a hydrocarbon material; (v) and at least one solids port for removing the solid fraction, containing a carbonaceous material.
• a feed port including a feed port; (ii) a thermal decomposition assembly including a reactor comprising an inner hollow cylinder, an outer hollow cylinder, one of which is rotatable with respect to the other, both hollow cylinders heated
• US20030202756 Al discloses a rotating drum for heat treatment with a serrated edge arranged on the housing of the drum and supported at various peripheral points on the drum housing by evenly distributed bridge members.
• Each bridge member includes two clips axially spaced apart and welded to the drum housing, and a cross plate connecting the clips and which is radially spaced from the drum housing.
• Each cross plate is rigidly connected to one clip and slidably connected in the axial direction to the other clip, so that different degrees of thermal expansion and consequent deformation of cross plates and higher stress on cross plates, clips and connection points can be compensated for.
• the document US20030202756 A1 does not address the issue of ensuring gas sealing to prevent entry or exit from the rotating drum.
• Document US5890814 A describes a rotating drum arrangement, in which the drum is mounted on support rings so that the circumferential expansion and contraction of the drum in relation to said support rings does not adversely affect the assembly.
• drum blocks are mounted on the drum and corresponding ring blocks are mounted on the support ring.
• the side surfaces of adjacent drum blocks and ring blocks support the weight of the drum in the ring.
• gaps can be maintained between the drum and the support ring to allow for expansion and contraction of the drum.
• the issue of the airtightness of the rotating drum is not discussed.
• the present invention aims to solve the problems mentioned above, since in the state of the art there is no self-compensating thermal expansion system that is adapted to a rotating cylindrical reactor, which ensures the sealing between the moving and stationary parts of the equipment, and therefore the hermeticity of the reaction medium, with a spectrum wide range of working temperatures, which ends up generating large variations in dilation.
• the main objective of the present invention is to provide a self-compensating thermal expansion sealing system for a rotating cylindrical reactor with a wide temperature spectrum, allowing greater thermal expansions when compared to the state of the art.
• the present invention provides a self-compensating thermal expansion sealing system for a rotating cylindrical reactor comprising (a) a first self-compensating portion positioned at a first end of the rotating cylindrical reactor, the first self-compensating portion comprising (a1) a guide ring fixed to the supporting structure of the rotating cylindrical reactor, (a.2) an axially sliding housing ring adjacent the guide ring, the axially sliding housing ring being sliding with respect to the guide ring in the axial direction , and (a.3) a ring-shaped first bearing race fixed to the rotating cylindrical reactor housing and supported on a first support roller, the first bearing race being sliding in the radial direction with respect to the axially sliding housing ring and attached to it in the axial direction of the rotating cylindrical reactor; and (b) a second self-compensating portion positioned at a second end of the rotating cylindrical reactor, opposite the first, the second self-compensating portion comprising (b.1) a housing ring attached to the supporting structure of
• Figure 1 illustrates a side view of the cylindrical reactor comprising the self-aligning sealing system according to the preferred embodiment of the present invention.
• Figure 2 illustrates a detailed view of a first portion of the self-aligning sealing system according to the preferred embodiment of the present invention.
• Figure 3 illustrates a detailed view of a second portion of the self-aligning sealing system according to the preferred embodiment of the present invention.
• rotating cylindrical reactor 2 is understood to mean a cylindrical rotating body provided with openings at its ends.
• the system of the present invention comprises a first self-compensating portion 8 positioned at a first end of the rotating cylindrical reactor 2, and a second self-compensating portion 9 positioned in a second end of the reactor rotating cylindrical reactor 2, the second end of the rotating cylindrical reactor 2 being opposite to the first.
• the first self-compensating portion 8 further comprises a first ring-shaped bearing track 22 fixed to the rotating cylindrical reactor housing 2 and supported on a first support roller 32 which is responsible for sliding and rotatingly supporting the first end of the rotating cylindrical reactor 2, as shown in figure 1.
• the second self-compensating portion 9 further comprises a first ring-shaped bearing race 23 fixed to the housing of the rotating cylindrical reactor 2 and supported on a first support roller 33 which is responsible for sliding and rotationally supporting the first end of the rotating cylindrical reactor 2.
• the raceways 22 and 23, respectively in the self-compensating portions 8 and 9, have a fundamental distinction: the raceway 23 has a groove represented by the number 23a, in distinction from runway 22 which is smooth. In this said pit 23a of the bearing track 23, the bearing roller 33 is housed. In this way, the axial displacement of the bearing track 23 and the expansion (or contraction) of the rotating cylindrical reactor 2, due to heating (or cooling) is not allowed. ) thereof, is integrally transferred to the self-compensating portion 8, causing the bearing roller 32 to slide axially on the bearing race 22.
• the first self-compensating portion 8 comprises a guide ring 80 fixed to the support structure of the rotating cylindrical reactor 2.
• the guide ring 80 is a stationary ring.
• the first self-compensating portion 8 also comprises an axially sliding housing ring 84 surrounding the guide ring 80, the axially sliding housing ring 84 being axially sliding with respect to the guide ring 80. guide ring 80 and rotationally stationary with respect to the rotating cylindrical reactor.
• the fact that the axially sliding housing ring 84 is movable in the axial direction with respect to the guide ring 80 allows for the compensation of axial expansion of the rotating cylindrical reactor 2.
• the axially sliding housing ring 84 houses a first dancer ring 85, in which at least a first side sealing gasket 86.
• the second self-compensating portion 9 also comprises a housing ring, but this is a fixed housing ring 94, which in turn houses a second dancer ring 85', in which at least a second side sealing gasket 86' is installed. .
• the first bearing race 22 is sliding in the radial direction with respect to the axially sliding housing ring 84 and integral thereto in the axial direction of the rotating cylindrical reactor 2.
• the first bearing race 22 pushes the axially sliding housing ring 84 in the opposite direction to the second self-compensating portion 9.
• a cam roller 88 fixed to the upper portion of the axially sliding housing ring 84 by means of a cam roller support 87 is responsible for solidifying the movement of the first bearing race 22 with that of the axially sliding housing ring 84.
• the first bearing race 22 upon cooling of the rotating cylindrical reactor 2, the first bearing race 22 "pulls" the axially sliding housing ring 84 towards the second self-compensating portion 9 by means of the cam roller 88 and its respective cam roller support 87.
• cam roller 88 contacts a side surface of a recess of first bearing track 22 and predisposes said axially sliding housing ring 84 toward first bearing track 22. Still preferably, a plurality of cam rollers 88 and Camshaft supports 87 are provided along the circumference of the axially sliding housing ring 84.
• the first self-compensating portion 8 further comprises a first dancer ring 85 housed loosely in a lateral cavity of the axially sliding housing ring 84, the first dancer ring 85 being predisposed towards a side face of the first bearing track 22 by means of at least one elastic element. More preferably, at least one first side gasket 86 compressed between the first dancer ring 85 and the side face of the first bearing track 22 is provided.
• the dancer ring 85 is stationary and there is a dimensional gap between it and the side cavity of the axially sliding housing ring 84 where it is inserted.
• the at least one elastic element is at least one first spring pin 83.
• a plurality of first spring pins 83 are provided along the circumference of the axially sliding housing ring 84.
• the first self-compensating portion 8 additionally comprises at least one lower gasket 82 compressed between the axially sliding housing ring 84 and the upper face of the guide ring 80.
• a presser ring 81 is secured to the axially sliding housing ring 84 by screw means are provided to adjust the pressure of the at least one lower gasket 82.
• the second self-compensating portion 9 is positioned at a second end of the rotating cylindrical reactor 2, opposite the first.
• the second self-compensating portion 9 comprises a fixed housing ring 94 to the supporting structure of the rotating cylindrical reactor 2.
• the second self-compensating portion 9 further comprises a second ring-shaped bearing race 23 fixed to the rotating cylindrical reactor housing 2 and supported on a second support roller 33 which is responsible for rotatingly supporting the second end of the rotating cylindrical reactor 2, as shown in figure 1.
• the second bearing track 23 preferably comprises a groove 23a adapted to fit the respective second support roller 33.
• the second support roller 33 works within this groove 23a, so that it prevents the movement of the bearing track 23 in the axial direction to the rotating cylindrical reactor 2. All axial displacement due to the increase in length of the rotating body is directed towards the first self-compensating portion 8. Since in the preferred embodiment of the present invention the first bearing race 22 does not have a equivalent undercut, the first support roller 32 is allowed to slide axially along the first bearing race 22 whenever the rotating body is heated or cooled.
• the second self-compensating portion 9 further comprises a second dancer ring 85' housed loosely in a lateral cavity of the fixed housing ring 94, the second dancer ring 85' being predisposed towards a side face of the second track. bearing 23 by means of at least one second elastic element. More preferably, at least one second side gasket 86' compressed between the second dancer ring 85' and the side face of the second bearing track 23 is provided.
• the second dancer ring 85' is preferably identical to the first dancer ring 85 described above, in order to move and absorb eventual angular misalignments between the axis of the rotating cylindrical reactor 2 and the axis of the support structure thereof.
• the at least one elastic element is at least a second spring pin 83'. Even preferably, a plurality of second spring pins 83' are provided along the circumference of the fixed housing ring 94.
• the first 22 and second 23 bearing races are fixed to the surface of the rotating cylindrical reactor 2 by means of screwing on at least one clamping ring 21 fixed to the surface of the rotating cylindrical reactor 2, according to figures 2 and 3.
• the first 22 and second 23 raceways are attached to the surface of the rotating cylindrical reactor 2 by means of welding to at least one centering clamp ring 21 attached to the surface of the rotating cylindrical reactor 2 (not shown).
• first 22 and second 23 raceways are attached to the surface of the rotating cylindrical reactor 2 by means of direct welding to the surface of the rotating cylindrical reactor 2 (not shown).
• first 22 and second 23 raceways are attached to the surface of the rotating cylindrical reactor 2 by means of direct bolting to the surface of the rotating cylindrical reactor 2 (not shown).
• the rotating cylindrical reactor 2 is driven by a motor 50 whose axis comprises at least one gear (not shown) engaged with a ring-shaped gear 90 fixed to one of the bearing races 22, 23. More preferably, the ring gear 90 is attached to the second bearing race 23.
• the present invention provides a thermal expansion self-compensating sealing system system for a rotating cylindrical reactor with a wide temperature spectrum, allowing greater thermal expansions when compared to the state of the art.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Muffle Furnaces And Rotary Kilns (AREA)
• Sealing Devices (AREA)
• Mechanical Sealing (AREA)
• Mounting Of Bearings Or Others (AREA)
• Accessories Of Cameras (AREA)
• Physical Or Chemical Processes And Apparatus (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

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ID=80844468

Family Applications (1)

Country Status (13)

Cited By (1)

Citations (14)

Family Cites Families (15)

• 2020
  • 2020-09-24 BR BR102020019375-9A patent/BR102020019375B1/pt active IP Right Grant
• 2021
  • 2021-09-17 WO PCT/BR2021/050397 patent/WO2022061434A1/pt not_active Ceased
  • 2021-09-17 EP EP21870615.8A patent/EP4269839B1/en active Active
  • 2021-09-17 JP JP2023518418A patent/JP2023542217A/ja active Pending
  • 2021-09-17 KR KR1020237012579A patent/KR20230073249A/ko active Pending
  • 2021-09-17 CN CN202180064375.2A patent/CN116249850B/zh active Active
  • 2021-09-17 CA CA3192674A patent/CA3192674A1/en active Pending
  • 2021-09-17 US US18/027,957 patent/US12560380B2/en active Active
  • 2021-09-22 PY PY202102183102A patent/PY2183102A/es unknown
  • 2021-09-23 UY UY0001039433A patent/UY39433A/es unknown
  • 2021-09-24 AR ARP210102657A patent/AR123596A1/es active IP Right Grant
• 2023
  • 2023-03-23 CL CL2023000850A patent/CL2023000850A1/es unknown
  • 2023-04-21 ZA ZA2023/04652A patent/ZA202304652B/en unknown

Patent Citations (14)

Non-Patent Citations (1)

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