US20130168044A1 - Device for cleaning a heat exchanger - Google Patents

Device for cleaning a heat exchanger Download PDF

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Publication number
US20130168044A1
US20130168044A1 US13/813,389 US201013813389A US2013168044A1 US 20130168044 A1 US20130168044 A1 US 20130168044A1 US 201013813389 A US201013813389 A US 201013813389A US 2013168044 A1 US2013168044 A1 US 2013168044A1
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United States
Prior art keywords
cleaning
heat transmitter
spiral
transmitter
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/813,389
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English (en)
Inventor
Erwin Schiefer
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Individual
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Individual
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Publication date
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Publication of US20130168044A1 publication Critical patent/US20130168044A1/en
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/10—Rotary appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G3/00—Rotary appliances
    • F28G3/08—Rotary appliances having coiled wire tools, i.e. basket type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage

Definitions

  • the invention relates to a heat transmitter, in particular a tube heat transmitter, for contaminated media such as, e.g., waste gas, having a gas entry opening and a gas exit opening with an entry opening for the tempering medium and an exit opening for the tempering medium as well as a cleaning device.
  • contaminated media such as, e.g., waste gas
  • Modern solid fuel boilers in general have devices for the regular cleaning of the heat exchanger surfaces.
  • the appropriate cleaning spirals are activated by the control of the plants in regular intervals and remove carbon black and dust deposits from the surfaces of the heat exchanger in order to keep the efficiency of the plants over the period of utilization as constant as possible.
  • cleaning spirals which are provided with the appropriate cleaning knives, which remove carbon black and dust that is deposited there during the operation of the plant from the surfaces of the heat exchanger.
  • the systems based on this principle show the disadvantage that the cleaning knives are attached rigidly at the cleaning spiral.
  • a cleaning spiral for solid fuel boilers which bears at least one cleaning knife that extends across the length of the heat exchanger surface to be cleaned and that is inserted at least in the centre and at the lower end thereof loosely in the respective guides at discs of the cleaning spindle.
  • the discs which are attached at the cleaning spindle and are arranged transversely to the flow direction of the waste gas, not only offer a guide for the cleaning knives that are loosely inserted therein in guiding grooves but rather swirl the hot air within the heat exchanger.
  • the cleaning knives thereby project beyond the guiding grooves in parallel to the surface of the heat exchanger.
  • the cleaning knives are each supported by respective wedge-like support bearings, which are situated in the bottom of the guiding groove of the central disc, against the surface of the heat exchanger.
  • This embodiment is disadvantageous insofar, however, as the cleaning knives are arranged at their two free ends slightly movably in regard to the circulating cleaning spindle and as such are able to compensate for unevenness at the surface of the heat exchanger, which is situated respectively on the level of its both end sections.
  • the wedge-like support bearings by means of which the cleaning knives are supported in the centre of the longitudinal sides thereof against the central disc of the cleaning spindle, unevenness of the heat exchanger surface cannot be compensated for along the central section of the cleaning knives, which at least in this central section continues to lead to the formation of undesired depositions at the heat exchanger surface.
  • a further disadvantage is that the cleaning knives are configured rigid over their overall length.
  • the cleaning knives according to this embodiment will not achieve a desired uniform as well as thorough cleaning effect across the entire heat exchanger surface passed in order to remove depositions.
  • the discs shown in DE 10 2004 031 220 A1 further act at the cleaning spindle due to their transversal arrangement to the longitudinal axis direction of the cleaning spindle or to the flow direction of the gas flow, respectively, like baffles.
  • the rather desired effects of an improved swirling of the gas flow, which result in improved heat transition are accompanied, however, disadvantageously by a high flow loss due to a significantly reduced free cross-sectional area of the tubular heat exchanger caused by the discs.
  • the high flow or pressure loss, respectively thus has to be compensated for by appropriately efficient gas feed pumps, leading at least to increased operational costs if such a cleaning spindle having transversely arranged discs is used.
  • the cleaning device is to be suitable especially for the use in a tubular heat transmitter, in which significantly contaminated media such as, e.g., waste gas originating in the gasification of wood, is passed through.
  • a heat transmitter according to the invention in particular a tube heat transmitter, for contaminated media such as, e.g., waste gas, advantageously comprises a gas entry opening and a gas exit opening, an entry opening for the tempering medium and an exit opening for the tempering medium as well as a cleaning device, wherein in a circular gap of the heat transmitter, in which the contaminated waste gas passes through, there is arranged a rotatable cleaning spiral of the cleaning device, the external edge of which cleaning spiral contacts at least in one section the external transmitter surface thereof.
  • the rotatable cleaning spiral is thereby put or maintained, respectively, in rotation during the operation of the heat transmitter.
  • the external edge of the cleaning spiral thus contacts the external transmitter surface.
  • Undesired depositions such as sticky combustion residues, carbon black, dust etc., which would deteriorate, because of their poor heat conductivity, the heat passage through the transmitter surface and, hence, the entire efficiency of the heat transmitter, are continuously collected at the external edge by the cleaning spiral, they are loosened up and then removed from the external transmitter surface.
  • the loosened deposition particles are dragged along with the gas flow and, for example, separated from the gas flow in proper separation devices.
  • the contaminated medium for example a waste gas flow charged with dirt particles
  • the heat exchanger is given a twist when it passes through the heat exchanger according to the invention.
  • the dirt particles are thereby fed in the direction of the external transmitter surface due to the centrifugal forces present.
  • the gas flow is put into a spiral-like rotational movement, comparable to passing a cyclone, and is in this way at least partly cleaned from dirt particles, leaving the heat exchanger advantageously having an at least lower load of contamination.
  • the free flow cross-section of the circular gap is not or only slightly, at the most, reduced by the rotatable cleaning spiral.
  • the flow resistance of the contaminated medium in the circular gap of the heat transmitter according to the invention is advantageously only rather slightly enlarged in this way.
  • the heat transmitter according to the invention may also be used for tempering contaminated liquid media, this is cooling as well as heating thereof, or for tempering gas-liquid mixtures contaminated by solids.
  • the internal edge of the cleaning spiral contacts at least in a section the internal transmitter surface.
  • Heat transmitters to which a tempering medium is applied only at the internal transmitter surface or at the external transmitter surface of the circular gap, this is, in which not the entire available transmitter surface is used for the transmission of heat, are also comprised by the invention.
  • the cleaning spiral is motion-coupled with a drive, which is arranged at the external surface of the heat transmitter.
  • the cleaning spiral in a heat transmitter according to the invention is connected via a drive shaft with the drive.
  • a preferred exemplary embodiment of a heat transmitter is characterized by a hermetically sealing through-passage of the drive shaft through the housing of the heat transmitter.
  • the cleaning spiral is usefully made of a spiral-like coiled strip-like material.
  • the cleaning spiral Due to the spiral-like coiled strip-like configuration, the cleaning spiral obtains high flexibility for adapting to the contours of the external or internal, respectively, transmitter surfaces. Smooth adjustment of the two edges of the cleaning spiral to the contours of the external or internal, respectively, transmitter surfaces is not given. Blocking of the cleaning device due to contact with the transmitter surfaces, as may be the case in cleaning knives known from prior art due to the heat expansion of the heat transmitter, is not given in the embodiment according to the invention.
  • the selected configuration of the stripe-like or spiral-like, respectively, coiled cleaning spiral is further advantageous in regard to the configuration of other common feed screws, in which the spiral is fixed to a core tube or welded thereto, respectively.
  • the coating surface of the core tube in a common feed screw has a large surface that is motionless in regard to the spiral, at which contaminations may deposit and, hence, the free cross-sectional area in the circular gap is reduced.
  • a cleaning spiral which is coiled like a spiral spring, may be used as a cleaning device according to the invention.
  • the cleaning spiral is made of a material having high mechanical strength, preferably metal.
  • the cleaning spiral is especially advantageously provided at its internal edge and/or at its external edge with a cleaning edge.
  • the heat transmitter may especially advantageously be adjusted to the most diverse states of operation.
  • the cleaning edge may then be configured to be exchangeable, and it may be replaced as a piece of wear following a certain time of operation.
  • There may also be used selectively various cleaning edges having different mechanical strengths.
  • the cleaning spiral hence, may especially economically be made of a material having less mechanical strength.
  • a sump container for receiving contaminations below the level of the cleaning spiral.
  • the depositions which are taken off the external or internal, respectively, transmitter surface by the cleaning spiral in operation and which are dragged along with the gas flow, reach the sump container, which is arranged underneath the cleaning spiral. Also other contaminations, which are introduced by the gas flow entering the heat transmitter, at least in part reach the sump container and are thus advantageously separated from the gas flow.
  • the revision opening which is usefully arranged in the proximity of the sump container, enables for simple and fast maintenance of the heat transmitter according to the invention in the case of a failure or defect.
  • Another advantageous feature of a heat transmitter according to the invention is characterized in that there is provided within the circular gap at least one distributor device for filling in the cleaning medium.
  • the distributor device may comprise, for example, several nozzles for filling in the cleaning medium, which are arranged at the same or at different levels of the internal and/or external transmitter surface.
  • the desired and advantageous washing effect of the waste gas is obtained in a section of the circular gap, which is situated downstream of the distributor device, observed in the flow direction of the waste gas.
  • the cleaning medium may, for example, also be conveyed upwards within the standing coating of the internal transmitter surface.
  • the top section of the internal transmitter surface may thus be configured as a distributor section conically tapering towards the top and having a horizontally circumferential tear-off edge, so that the cleaning medium conveyed across the tear-off edge flows down uniformly at the side of the internal transmitter surface that faces the gas flow in the conical distributor section as a uniform thin film distributed across the entire perimeter of the internal transmitter surface at this covering surface. Due to the large surface between the thin film of the cleaning medium and the gas flow, there is obtained an especially good washing effect, and the contaminated waste gas is appropriately freed of contaminations.
  • the distributor device is usefully arranged between the gas entry opening and the gas exit opening.
  • the distributor device is, e.g., arranged approximately centrally between the gas entry opening and the gas exit opening.
  • the gas flow is dry-cleaned by the centrifugal force in the section between the gas entry opening and the distributor device, comparable to cleaning in a cyclone, and in the section between the distributor device and the gas exit opening, the gas flow is, in addition to the mechanical cleaning, also washed.
  • Cleaning media to be used in the heat transmitter according to the invention may be, depending on the composition of the waste gas to be cleaned/purified, water or the cleaning media commonly used in the purification of flue gas.
  • the invention is limited to embodiments of standing heat transmitters having a vertically arranged circular gap but rather also comprises analogously all variants of positioning.
  • the invention also comprises heat transmitters that are horizontally positioned having a circular gap that is horizontally passed through, or also heat transmitters positioned obliquely.
  • FIG. 1 shows in a schematic lateral section from the side a first embodiment variant of a heat transmitter according to the invention having a cleaning device;
  • FIG. 1 a shows in a schematic sectional view from the top details of the first embodiment variant of a heat transmitter according to the invention shown in FIG. 1 ;
  • FIG. 2 shows in a schematic lateral section details of a second embodiment variant of a heat transmitter according to the invention having two tubular sections with cleaning devices;
  • FIG. 3 shows in a schematic sectional view details of a third embodiment variant of a heat transmitter according to the invention having two tubular sections with cleaning devices.
  • FIG. 1 there is illustrated in a sectional view a heat transmitter 1 according to the invention having a tubular heat transmitter section 2 .
  • a cleaning device 3 comprises a cleaning spiral 4 , which is made of a spiral-like coiled metal strip that is similar to a spiral spring and which is provided at the external edge 5 and at the internal edge 6 thereof respectively with a cleaning edge 7 having high mechanical strength.
  • the cleaning spiral 4 is situated within the circular gap 8 , which is positioned between an external transmitter surface 9 that is formed by an external tube coating and an internal transmitter surface 11 that is formed by an internal tube coating concentric to the external tube coating.
  • the rotatable cleaning spiral 4 aims at cleaning, during the operation of the heat transmitter 1 , a section 10 of the external transmitter surface 9 or a section 12 of internal transmitter surface 12 , respectively, which is as large as possible. Thereby, the cleaning edges 7 of the turning or rotating, respectively, cleaning spirals 4 contact the surfaces 9 or 11 , respectively, along the corresponding sections 10 or 12 , respectively.
  • the fixed internal tube coating of the internal transmitter surface 11 is closed at the upper end thereof by way of an appropriate cover. During operation, hence, there is guaranteed that the biomass to be gasified reaches the circular gap 8 exclusively from the top and is then heated therein.
  • the cleaning shaft 4 is motion-coupled by a drive shaft 14 with its own drive 13 including the associated gearbox, and it is driven by the drive shaft 14 in the direction of rotation 17 .
  • the rotatable drive shaft 14 is provided at the upper end thereof with an adapter 16 for attachment of the cleaning spiral 4 .
  • the housing 18 of the heat transmitter 1 has a hermetically sealing through-passage 19 for the drive shaft 14 at its top side.
  • the housing 18 In order to cool or temper, respectively, the waste gas, the housing 18 is laterally provided with a gas entry opening 20 as well as with a gas exit opening 21 situated further underneath the level of the gas entry opening 20 .
  • the waste gas 22 flowing through the gas entry opening reaches the tubular heat transmitter section 2 and is then guided through the circular gap 8 , in which the rotating cleaning spiral 4 causes a swirl to the gas flow, to the gas exit opening 21 , where it leaves the heat transmitter 1 as waste gas 23 flowing out.
  • the secondary circuit there is transported a tempering medium through the heat transmitter 1 , wherein the peripheral pipelines, fittings and aggregates that are required and situated outside the heat transmitter 1 are not depicted in the figures.
  • the housing 18 is provided with an entry opening 24 for the tempering medium as well as an exit opening 25 for the tempering medium, wherein the tempering medium moves in the direction of the arrow 26 into the heat transmitter, flows along the respective back side of the external transmitter surface 9 that is oriented opposite to the gas flow and/or of the internal transmitter surface 11 and then leaves the heat transmitter 1 in the direction of the arrow 27 through the exit opening 25 for the tempering medium.
  • tempering medium there is used, e.g., cooling water in order to cool the hot waste gas in the assembly shown in FIG. 1 in an operation in the same direction.
  • a revision flange 28 which is arranged underneath the level of the cleaning spiral 4 .
  • the heat transmitter 1 may be simply cleaned upon opening of the revision flange 28 .
  • the sump container 29 in which the deposited contaminations are collected, is further well accessible via the opening of the revision flange 28 .
  • the sump container 29 also has an appropriate release valve for the slurry for the continuous disposal of the contaminations, which is known from prior art and, hence, not depicted in greater detail in FIG. 1 .
  • FIG. 1 a shows in a top view details of the heat transmitter 1 illustrated in FIG. 1 .
  • a horizontal sectional plane approximately centrally of the height of the entry opening 24 for the tempering medium shown in FIG. 1 .
  • the cleaning spiral 4 is provided at the external edge 5 thereof as well as the internal edge 6 thereof respectively with a cleaning edge 7 .
  • the cleaning spiral 4 contacts during the operation of the cleaning device 3 , this is if the cleaning spiral 4 is then set in rotation, the external transmitter surface 9 as well as the internal transmitter surface 11 and thereby also cleans the transmitter surfaces. Heat transition in the circular gap 8 thus is not impaired by the significantly contaminated waste gas; and depositions at the transmitter surfaces are continuously removed by the rotating cleaning spiral 4 .
  • FIG. 2 there are illustrated details of a second embodiment variant of a heat transmitter 1 according to the invention in a schematic sectional view.
  • the heat transmitter 1 is provided with two tubular heat transmitter sections 2 that are arranged adjacently and in parallel to each other with cleaning devices 3 , which each comprise a cleaning spiral 4 .
  • the heat transmitter 1 shown in FIG. 2 is used in an operation in the same direction.
  • the hot waste gas 22 passes through the gas entry opening 20 arranged at the top of the housing 18 into the circular gap 8 and is then put into swirl movement by the spiral-like rotating cleaning spiral 4 .
  • the rotational movement of this swirl movement corresponds to the axial direction of the drive shaft 14 .
  • contamination particles are transported from the waste gas flow in the direction of the external transmitter surface 9 , which then possibly will adhere thereto.
  • the cooled waste gas leaves the heat transmitter 1 at the lower section thereof in the direction of the arrow 23 through the gas exit opening 21 .
  • the required connection pipe lines as well as the aggregates and fittings that are commonly used therefore, which are situated outside of the heat transmitter 1 are not illustrated in the FIGS. 1 to 3 .
  • the tempering medium herein, e.g., cooling water—is transported through the entry opening 24 for the tempering medium in the direction of the arrow 26 into the heat transmitter 1 and leaves the heat transmitter 1 in the direction of the arrow 27 through the exit opening for the tempering medium, which is situated above.
  • the external transmitter surface 9 as well as the internal transmitter surface 11 are used as transmittance surfaces and the tempering medium is applied respectively at the back sides thereof that are in the opposite direction of the gas flow.
  • a distributor device 31 for filling a cleaning medium 32 .
  • the cleaning medium 32 is transported from the outside through a feed line 30 into the heat transmitter 1 and is then further transported within the fixed coating of the internal transmitter surface 11 further up to the level of the distributor device 31 .
  • the cylindrical coating of the internal transmitter surface 11 is closed at the top side thereof.
  • the distributor device 31 comprises, for example, several nozzle-like openings, through which the cleaning medium, e.g., water, is introduced in the hot waste gas flow.
  • FIG. 3 in a schematic sectional view, details of a third embodiment variant of a heat transmitter 1 according to the invention having two tubular heat transmitter sections 2 that are arranged adjacently and in parallel to each other, each having cleaning devices 3 .
  • the heat transmitter 1 illustrated herein is also provided with a feed line 30 for a cleaning medium 32 .
  • the distributor device 31 for the supply of the cleaning medium 32 into the circular gap 8 passed through by the waste gas is configured in another way than the variant shown herein in FIG. 2 .
  • the fixed cylindrical coating of the internal transmitter surface 11 is configured along the top section thereof as a conically tapering distributor section 33 , which has an overflow opening at its top point as an outlet for the cleaning medium 32 .
  • the cleaning medium 32 is distributed as a thin film uniformly across the entire periphery of the internal transmitter surface 11 and flows further downward in the circular gap 8 as a film alongside the cylindrical coating of the internal transmitter surface 11 until the excessive cleaning medium finally reaches the sump container 29 and is collected therein.
  • the huge surface of the internal transmitter surface 11 which is wetted by the film of the cleaning medium 32 , achieves a very efficient and effective gas washing.
  • the contaminations of the waste gas flow that are collected by the film of the cleaning medium 32 flowing downwards are separated as slurry in the sump container 29 and from there, they are removed from the heat transmitter 1 according to the invention.
  • the length of the section 35 for washing the waste gas is expanded in regard to the variant shown in FIG. 2 .
  • the section 34 in which there is performed a dry cleaning of the waste gas, is correspondingly reduced in the variant shown in FIG. 3 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cleaning In General (AREA)
US13/813,389 2009-08-04 2010-07-19 Device for cleaning a heat exchanger Abandoned US20130168044A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ATA1229/2009 2009-08-04
AT0122909A AT508157B1 (de) 2009-08-04 2009-08-04 Vorrichtung zum abreinigen eines wärmetauschers
PCT/EP2010/060430 WO2011015448A2 (de) 2009-08-04 2010-07-19 Vorrichtung zum abreinigen eines waermetauschers

Publications (1)

Publication Number Publication Date
US20130168044A1 true US20130168044A1 (en) 2013-07-04

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ID=43038174

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Application Number Title Priority Date Filing Date
US13/813,389 Abandoned US20130168044A1 (en) 2009-08-04 2010-07-19 Device for cleaning a heat exchanger

Country Status (5)

Country Link
US (1) US20130168044A1 (de)
EP (1) EP2462380A2 (de)
AT (1) AT508157B1 (de)
CA (1) CA2806297A1 (de)
WO (1) WO2011015448A2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU181461U1 (ru) * 2018-03-21 2018-07-16 Павел Евгеньевич Портнов Устройство для очистки трубки теплообменного аппарата
CN111878842A (zh) * 2020-08-07 2020-11-03 东营市正能石油科技有限公司 一种具有防堵塞结构的原油加热装置
CN112611253A (zh) * 2020-12-01 2021-04-06 内蒙古金石镁业有限公司 一种冷却器自动清扫装置及其清扫控制方法
CN114413325A (zh) * 2021-12-30 2022-04-29 浙江阳帆节能开发有限公司 一种空气能智能变频空调
CN114777535A (zh) * 2022-05-13 2022-07-22 江西黑猫炭黑股份有限公司 一种提高炭黑油余热综合利用的装置

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AT517955B1 (de) * 2016-05-18 2017-06-15 Ökofen Forschungs- Und Entw M B H Heizeinrichtung
AT15025U3 (de) * 2016-05-18 2017-05-15 Ökofen Forschungs- Und Entw M B H Heizeinrichtung
CN110262635B (zh) * 2019-06-19 2020-12-18 四川蜀天信息技术有限公司 一种防尘效果好可靠性高的软件测试设备
CN115095866B (zh) * 2022-06-21 2025-06-10 江苏鼎新环保科技有限公司 一种风电叶片废弃物热解焚烧炉及其使用方法
CN116878333B (zh) * 2023-09-05 2023-11-07 山东瑞多节能环保科技有限公司 一种污水换热器在线清洗装置及清洗方法

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US4315541A (en) * 1978-09-06 1982-02-16 Mitsui Toatsu Chemicals Incorporated Device for scraping off deposits from internal surfaces of elongated tubes
US5228503A (en) * 1991-05-17 1993-07-20 Smith Douglas W P High viscous fluid heat exchanger
US5759498A (en) * 1996-12-12 1998-06-02 United Microelectronics Corp. Gas exhaust apparatus
WO2008022412A1 (en) * 2006-08-25 2008-02-28 Severel Paskov Parvanov Heating boiler

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FR2439630A1 (fr) * 1978-10-23 1980-05-23 Montage Cie Indle Dispositif de nettoyage de tubes conduisant des gaz charges d'impuretes et d'epuration des gaz
GB2323312B (en) * 1997-03-21 2001-08-08 Korea M A T Co Ltd Gas scrubber and methods of disposing a gas using the same
DE19828767A1 (de) * 1997-06-27 1999-01-28 Robert Bloos Heizkessel für die Verbrennung von festem Brennstoff
DE102004031220B4 (de) 2004-06-28 2008-07-17 Bernd Dipl.-Ing. Langer Reinigungsspindel für Feststoffbrennkessel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4315541A (en) * 1978-09-06 1982-02-16 Mitsui Toatsu Chemicals Incorporated Device for scraping off deposits from internal surfaces of elongated tubes
US5228503A (en) * 1991-05-17 1993-07-20 Smith Douglas W P High viscous fluid heat exchanger
US5759498A (en) * 1996-12-12 1998-06-02 United Microelectronics Corp. Gas exhaust apparatus
WO2008022412A1 (en) * 2006-08-25 2008-02-28 Severel Paskov Parvanov Heating boiler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU181461U1 (ru) * 2018-03-21 2018-07-16 Павел Евгеньевич Портнов Устройство для очистки трубки теплообменного аппарата
CN111878842A (zh) * 2020-08-07 2020-11-03 东营市正能石油科技有限公司 一种具有防堵塞结构的原油加热装置
CN112611253A (zh) * 2020-12-01 2021-04-06 内蒙古金石镁业有限公司 一种冷却器自动清扫装置及其清扫控制方法
CN114413325A (zh) * 2021-12-30 2022-04-29 浙江阳帆节能开发有限公司 一种空气能智能变频空调
CN114777535A (zh) * 2022-05-13 2022-07-22 江西黑猫炭黑股份有限公司 一种提高炭黑油余热综合利用的装置

Also Published As

Publication number Publication date
AT508157B1 (de) 2010-11-15
EP2462380A2 (de) 2012-06-13
AT508157A4 (de) 2010-11-15
WO2011015448A2 (de) 2011-02-10
CA2806297A1 (en) 2011-02-10
WO2011015448A3 (de) 2011-07-28

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