ES2286394T3 - CLEANING PROCEDURE ON THE OVEN THERMAL EXCHANGE SURFACES. - Google Patents
CLEANING PROCEDURE ON THE OVEN THERMAL EXCHANGE SURFACES. Download PDFInfo
- Publication number
- ES2286394T3 ES2286394T3 ES03292721T ES03292721T ES2286394T3 ES 2286394 T3 ES2286394 T3 ES 2286394T3 ES 03292721 T ES03292721 T ES 03292721T ES 03292721 T ES03292721 T ES 03292721T ES 2286394 T3 ES2286394 T3 ES 2286394T3
- Authority
- ES
- Spain
- Prior art keywords
- particles
- formulation
- cleaned
- oven
- jet
- 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.)
- Expired - Lifetime
Links
- 238000004140 cleaning Methods 0.000 title claims description 7
- 239000002245 particle Substances 0.000 claims abstract description 37
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000004202 carbamide Substances 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 11
- 238000009472 formulation Methods 0.000 claims description 17
- 235000013877 carbamide Nutrition 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 6
- 159000000003 magnesium salts Chemical class 0.000 claims description 5
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 3
- 239000001095 magnesium carbonate Substances 0.000 claims description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 3
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000391 magnesium silicate Substances 0.000 claims description 2
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 2
- 235000019792 magnesium silicate Nutrition 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000000779 smoke Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000003303 reheating Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002925 chemical effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
- F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits
-
- 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
- F23J3/023—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the fireside of watertubes in boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
-
- 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
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Treating Waste Gases (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
Procedimiento de limpieza en marcha de las superficies de intercambio térmico de hornos.Cleaning procedure in progress of furnace heat exchange surfaces.
La invención se refiere a un procedimiento de limpieza en marcha de las superficies de hornos, en particular de las superficies metálicas de intercambio térmico del lado de los gases del humo de hornos industriales, tales como los hornos de refinado de petróleo y de petroquímica, así como de calderas industriales.The invention relates to a method of cleaning in progress of furnace surfaces, in particular of the metal heat exchange surfaces on the side of the smoke gases from industrial furnaces, such as furnaces oil and petrochemical refining, as well as boilers Industrial
Tales hornos utilizan a menudo fuel pesado como combustible por razones económicas. O, siendo incompleta la combustión del fuel pesado, se forman depósitos sobre las superficies de los intercambios térmicos. Estos depósitos normalmente están constituidos por fracciones pesadas de hidrocarburos, de sílice, de metales pesados y de compuestos estables que conservan un estado sólido en el interior del horno, también a elevada temperatura. Problemas similares igualmente se pueden constatar con otros combustibles líquidos o gaseosos.Such ovens often use heavy fuel as fuel for economic reasons. Or, being incomplete the heavy fuel combustion, deposits are formed on the surfaces of thermal exchanges. These deposits normally they consist of heavy fractions of hydrocarbons, silica, heavy metals and compounds stable that retain a solid state inside the oven, also at high temperature. Similar problems are also they can verify with other liquid or gaseous fuels.
Estos depósitos reducen considerablemente los intercambios térmicos entre los gases de la combustión y el fluido que se tiene que calentar, lo que genera una pérdida de rendimiento del horno.These deposits considerably reduce thermal exchanges between combustion gases and fluid that has to be heated, which results in a loss of performance from the oven.
Se conocen ya diversas técnicas que permiten limpiar las superficies de los intercambios térmicos del horno, manteniendo activo el horno. En particular el documento EP-A-0 410 867 divulga la realización de las etapas siguientes:Various techniques are already known that allow clean the surfaces of the oven's heat exchanges, keeping the oven active. In particular the document EP-A-0 410 867 discloses the completion of the following stages:
- generar un chorro de gas que se dirija hacia las superficies que se tienen que limpiar,- generate a jet of gas that is directed towards the surfaces to be cleaned,
- integrar partículas en estado sólido al chorro de fluido, proyectar las partículas a una velocidad tal que las partículas se desintegren al entrar en contacto con dichas superficies que se tienen que limpiar,- integrate particles in solid state to the jet of fluid, project the particles at a speed such that particles disintegrate upon contact with said surfaces that have to be cleaned,
- desplazar el chorro de fluido y de las partículas a lo largo de las superficies que se tienen que limpiar.- move the fluid stream and the particles along the surfaces that have to clean.
Las partículas eliminan el depósito por un efecto químico oxidante y por un efecto mecánico debido a la velocidad de las partículas que no se subliman hasta que entran en contacto con las superficies que se tienen que limpiar.The particles remove the deposit by a oxidizing chemical effect and by a mechanical effect due to the velocity of particles that do not sublimate until they enter contact with surfaces to be cleaned.
Sin embargo, este procedimiento presenta grandes problemas de seguridad por el aprovisionamiento del agente oxidante en la medida en la que el más satisfactorio está constituido por nitrato de amonio el cual con otros productos puede formar un poderoso explosivo.However, this procedure has large security problems due to the provision of the oxidizing agent to the extent that the most satisfactory is constituted by ammonium nitrate which with other products can form a powerful explosive
Un procedimiento similar que utiliza partículas sólidas de formaldehído de urea es conocido a partir del documento US 6186869 B.A similar procedure that uses particles Urea formaldehyde solids is known from the document US 6186869 B.
La invención contempla por consiguiente proponer una solución que resuelva estos problemas, que sea barata y que conserve una buena eficacia para eliminar el depósito.The invention therefore contemplates proposing a solution that solves these problems, that is cheap and that keep good efficiency to eliminate the deposit.
Para hacer eso, según la invención, se utilizan partículas en las que la formulación está constituida mayoritariamente (en más de 50% en peso) por carbamida.To do that, according to the invention, they are used particles in which the formulation is constituted mostly (in more than 50% by weight) per carbamide.
La carbamida (de urea) es barata y se obtiene sin mayor dificultad bajo la forma de bolas sólidas. Por otra parte, aunque la carbamida no sea un oxidante, se ha revelado más eficaz para eliminar los depósitos que los productos anteriormente utilizados y globalmente menos contaminante.Carbamide (from urea) is cheap and is obtained without major difficulty in the form of solid balls. For other part, although carbamide is not an oxidant, more has been revealed effective to eliminate deposits that products previously used and globally less polluting.
Finalmente, la presencia en mayor cantidad de la carbamida en la formulación permite obtener una temperatura de fusión de la formulación suficientemente elevada para que las partículas no se sublimen antes de que entren en contacto con las superficies que se tienen que limpiar, pero igualmente suficientemente baja como para neutralizar los compuestos ácidos del depósito, para fragilizar por acción química la estructura física del depósito, para después sublimarse o vaporizarse totalmente bajo el calor de los gases de la combustión.Finally, the presence in greater quantity of the carbamide in the formulation allows to obtain a temperature of fusion of the formulation sufficiently high so that the particles do not sublimate before they come into contact with surfaces that have to be cleaned, but equally low enough to neutralize acidic compounds of the deposit, to embrittle the structure by chemical action tank physics, then sublimate or vaporize totally under the heat of combustion gases.
Teniendo en cuenta las ventajas proporcionadas por la carbamida, según la invención, se introduce por lo menos un 95% de carbamida (en peso) en la formulación de las partículas.Taking into account the advantages provided by carbamide, according to the invention, at least one 95% carbamide (by weight) in the formulation of the particles.
Sólo algunos aditivos serán también añadidos en reducidas cantidades para una acción dirigida.Only some additives will also be added in reduced amounts for a targeted action.
En particular, según la invención, se añade una sal de magnesio, ventajosamente de carbonato de magnesio o de silicato de magnesio a la formulación de las partículas.In particular, according to the invention, a magnesium salt, advantageously magnesium carbonate or Magnesium silicate to the formulation of the particles.
Siendo higroscópica la carbamida, la sal de magnesio permite absorber la humedad y evitar la aglomeración de partículas y la obturación del dispositivo que genera el chorro de gas. Además, el magnesio capta el vanadio que a menudo está presente en los depósitos y que provoca la corrosión de las superficies de intercambio térmico. Por otra parte, permite aumentar ligeramente la temperatura de fusión de las partículas, lo que mejora más aún la eficacia de la limpieza.Carbamide being hygroscopic, the salt of Magnesium can absorb moisture and prevent the agglomeration of particles and the sealing of the device that generates the jet of gas. In addition, magnesium captures vanadium that is often present in the tanks and that causes the corrosion of the heat exchange surfaces. Moreover, it allows slightly increase the melting temperature of the particles, what which further improves the efficiency of cleaning.
Ventajosamente, se añade entre el 0,5% y el 5% de sal de magnesio al peso de la formulación de las partículas.Advantageously, between 0.5% and 5% is added of magnesium salt to the weight of the particle formulation.
Esta proporción permite obtener un rendimiento satisfactorio sin generar más que una mínima cantidad de residuos sólidos. En efecto, una parte de la sal de magnesio no se vaporiza y cae sobre la solera del horno con una parte de los depósitos desprendidos de las superficies limpiadas.This proportion allows to obtain a yield satisfactory without generating more than a minimum amount of waste solid. Indeed, a part of the magnesium salt does not vaporize and falls on the hearth of the oven with a part of the deposits detached from cleaned surfaces.
Según otra característica ventajosa de la invención para obtener un buen rendimiento de la formulación, se ajusta el horno de forma que la temperatura de dichas superficies que se tienen que limpiar sea superior a 250ºC.According to another advantageous feature of the invention to obtain a good formulation performance, it adjust the oven so that the temperature of these surfaces that have to be cleaned exceeds 250 ° C.
Así, la formulación, y en particular la carbamida, cambia de estado al entrar en contacto con las superficies que se tienen que limpiar, lo que la hace mucho más potente para reaccionar con los componentes del depósito.Thus, the formulation, and in particular the carbamide, changes state when coming into contact with surfaces that have to be cleaned, which makes it much more powerful to react with the components of the tank.
Por otra parte, ventajosamente se proyectan las partículas para el contacto con las superficies que se tienen que limpiar a una velocidad de por lo menos 50 m/s.On the other hand, advantageously the particles for contact with surfaces that have to be clean at a speed of at least 50 m / s.
Se obtiene también una desintegración satisfactoria de las partículas sólidas de la formulación, lo que mejora todavía su eficacia y asegura una limpieza todavía mejor de dichas superficies por efecto mecánico y químico.Disintegration is also obtained. satisfactory solid particles of the formulation, which it still improves its efficiency and ensures an even better cleaning of said surfaces by mechanical and chemical effect.
La figura adjunta representa esquemáticamente un procedimiento de limpieza de tubos 2 de un horno cilíndrico 1 de una unidad de refinado de petróleo.The attached figure schematically represents a tube cleaning procedure 2 of a cylindrical oven 1 of An oil refining unit.
El horno 1 se mantiene en funcionamiento, calentado por un quemador (no representado). Los tubos 2 se extienden en el interior del horno entre un primer extremo 2a y un segundo extremo 2b. Los hidrocarburos que circulan por el interior de dichos tubos 2 son calentados entre estos dos extremos por el intercambio de calor con el gas de la combustión.The oven 1 is kept running, heated by a burner (not shown). The tubes 2 are extend inside the oven between a first end 2a and a second end 2b. The hydrocarbons that circulate inside of said tubes 2 are heated between these two ends by the heat exchange with combustion gas.
La presencia de un depósito sobre el exterior de los tubos 2 aísla térmicamente el fluido que se tiene que recalentar (aquí los hidrocarburos) de los gases de combustión, lo que necesita aumentar la potencia suministrada por el quemador para mantener el mismo intercambio térmico.The presence of a deposit on the outside of the tubes 2 thermally isolates the fluid that has to be reheat (here hydrocarbons) of flue gases, what you need to increase the power supplied by the burner to Maintain the same heat exchange.
Para desprenderse este depósito, se hace pasar una caña de inyección 4 a través de una abertura 8 practicada en la pared 10 del horno. Esta caña proyecta partículas sólidas 6 contra uno de los tubos. Esta caña 4 está alimentada 4 con aire comprimido a una presión de aproximadamente 5 a 10 bar y con partículas sólidas 6 por un dispositivo provisto a este efecto.To detach this deposit, it is passed an injection rod 4 through an opening 8 made in the wall 10 of the oven. This rod projects solid particles 6 against One of the tubes. This rod 4 is powered 4 with compressed air at a pressure of approximately 5 to 10 bar and with solid particles 6 for a device provided for this purpose.
Las partículas 6 son sensiblemente esféricas y tienen una dimensión comprendida entre 1 y 5 mm, ventajosamente entre 2 y 4 mm. Alcanzan el tubo 2 a una velocidad de por lo menos 50 m/s, ventajosamente entre 100 m/s y 200 m/s. La formulación de las partículas contiene de preferencia alrededor del 98% de carbamida -(NH_{2})_{2}CO -y aproximadamente un 2% de carbonato de magnesio, en peso. Al entrar en contacto con el tubo 2 en el que la temperatura es de por lo menos 250º, las partículas 6 desprenden una parte del depósito, toda la carbamida contenida en las partículas se vaporiza y sólo una cantidad muy reducida de residuos sólidos cae sobre la solera del horno.The particles 6 are substantially spherical and they have a dimension between 1 and 5 mm, advantageously between 2 and 4 mm. They reach tube 2 at a speed of at least 50 m / s, advantageously between 100 m / s and 200 m / s. The formulation of the particles preferably contain about 98% of carbamide - (NH 2) 2 CO -and about 2% of magnesium carbonate, by weight. Upon contact with tube 2 in which the temperature is at least 250 °, the particles 6 they give off a part of the tank, all the carbamide contained in the particles vaporize and only a very small amount of Solid waste falls on the oven floor.
Los derivados ácidos del depósito son neutralizados por los gases emitidos por la descomposición de la formulación, lo que genera un desprendimiento de óxido de azufre, nitrógeno y vapor de agua. El utilizador desplaza entonces la caña de inyección, tal como se ilustra mediante la flecha 12, entre el primer extremo 2a y el segundo extremo 2b del tubo 2, a fin de retirar el depósito sobre el conjunto del tubo. En caso de necesidad, hace pasar la caña por otras aberturas existentes o especialmente creadas en las paredes del horno y procede de manera análoga con los otros tubos 2.The acid derivatives of the deposit are neutralized by the gases emitted by the decomposition of the formulation, which generates a release of sulfur oxide, nitrogen and water vapor. The user then moves the rod injection, as illustrated by arrow 12, between the first end 2a and the second end 2b of the tube 2, in order to remove the tank on the tube assembly. In case of need, passes the rod through other existing openings or specially created in the oven walls and proceed in a manner analogous with the other tubes 2.
Claims (9)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03292721A EP1528318B1 (en) | 2003-10-30 | 2003-10-30 | Method of cleaning heat exchange surfaces in operating furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2286394T3 true ES2286394T3 (en) | 2007-12-01 |
Family
ID=34400590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES03292721T Expired - Lifetime ES2286394T3 (en) | 2003-10-30 | 2003-10-30 | CLEANING PROCEDURE ON THE OVEN THERMAL EXCHANGE SURFACES. |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1528318B1 (en) |
| AT (1) | ATE363631T1 (en) |
| DE (1) | DE60314147T2 (en) |
| ES (1) | ES2286394T3 (en) |
| WO (1) | WO2005045315A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005032818B4 (en) * | 2005-07-12 | 2007-07-19 | BRÜNDERMANN, Georg | Process for cleaning power plant boilers |
| JP5079465B2 (en) * | 2007-11-21 | 2012-11-21 | 新日鉄エンジニアリング株式会社 | Shot cleaning device and shot ball collecting method of shot cleaning device |
| KR101748802B1 (en) | 2016-10-18 | 2017-06-19 | 주식회사 지스코 | Soot blower and method for cleaning tubular heat exchanger using thereof |
| CN110925958B (en) * | 2018-09-20 | 2021-07-27 | 青岛海尔智能技术研发有限公司 | Air conditioner and cleaning control method |
| RU2707512C1 (en) * | 2019-07-11 | 2019-11-27 | Общество с ограниченной ответственностью "ЛУКОЙЛ-Нижегородниинефтепроект" | Apparatus for cleaning furnace and boilers heat exchange surfaces by blasting method |
| CN110793051A (en) * | 2019-11-19 | 2020-02-14 | 云南永昌硅业股份有限公司 | Method for cleaning deposited ash in ascending flue of submerged arc furnace |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL132465C (en) * | 1967-11-24 | |||
| FR2650384B1 (en) * | 1989-07-28 | 1994-07-22 | Petroles Cie Techniques | PROCESS FOR CLEANING HOT OVEN SURFACES, AS WELL AS A PLANT AND GRANULES FOR IMPLEMENTING SAME |
| US6186869B1 (en) * | 1999-02-12 | 2001-02-13 | Cetek Limited | Cleaning using welding lances and blasting media |
-
2003
- 2003-10-30 ES ES03292721T patent/ES2286394T3/en not_active Expired - Lifetime
- 2003-10-30 DE DE60314147T patent/DE60314147T2/en not_active Expired - Lifetime
- 2003-10-30 EP EP03292721A patent/EP1528318B1/en not_active Expired - Lifetime
- 2003-10-30 AT AT03292721T patent/ATE363631T1/en not_active IP Right Cessation
-
2004
- 2004-10-26 WO PCT/FR2004/002747 patent/WO2005045315A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP1528318A1 (en) | 2005-05-04 |
| WO2005045315A1 (en) | 2005-05-19 |
| ATE363631T1 (en) | 2007-06-15 |
| DE60314147D1 (en) | 2007-07-12 |
| EP1528318B1 (en) | 2007-05-30 |
| DE60314147T2 (en) | 2008-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101647117B1 (en) | Method of generating electricity by burning waste and waste burning facility | |
| EP2578298B1 (en) | Exhaust gas processing method | |
| ES2277817T3 (en) | PROCEDURE TO ELIMINATE NOX AND SOX FROM AN EXHAUST GAS. | |
| JP6045653B2 (en) | CO2 absorption liquid scattering control method | |
| JP5165386B2 (en) | Duct injection with targets for SO3 control | |
| ES2286394T3 (en) | CLEANING PROCEDURE ON THE OVEN THERMAL EXCHANGE SURFACES. | |
| US20130136680A1 (en) | Air pollution control system and method | |
| KR101572562B1 (en) | process of manufacturing | |
| KR101333651B1 (en) | Chemicals for improvement of coal burning | |
| WO2015005066A1 (en) | Exhaust gas treatment method, and exhaust gas treatment device | |
| US5220875A (en) | Method of reducing sulfur dioxide content in flue gases | |
| ES2561405T3 (en) | NOx emission reduction method using a reactive agent, and corresponding boiler | |
| KR20100103766A (en) | Condensing boiler has scrubber for reducing the carbon and the nitrogen oxide | |
| ES2806950T3 (en) | Boiler, corresponding device and boiler cleaning procedure | |
| JP6178141B2 (en) | Exhaust gas treatment method and exhaust gas treatment apparatus | |
| KR20090094562A (en) | Carbon dioxide gas removal equipment of flue duct have waste heat recovery function | |
| Tsvetkov et al. | HCl Neutralization by Alkaline Sorbents in the Gasification of Chloride-Containing Fuel in the Filtration Combustion Mode | |
| KR102464835B1 (en) | Apparatus and method for spraying urea by using thermal energy of incinerator | |
| RU2655437C1 (en) | Method of chemical protection of boiler equipment | |
| JP2009270754A (en) | Combustion method and combustion device of waste fluid | |
| WO2018185688A1 (en) | Composition and process for the treatment of combustion gases containing sulphur oxides | |
| CN223448398U (en) | A barrel waste gas incineration treatment system | |
| ES2401711T3 (en) | Procedure and installation of purification of fumes containing acid contaminants | |
| JPH09874A (en) | Boiler equipment | |
| WO2017115844A1 (en) | Boiler and corrosion suppression method |