FR2583304A1 - Plant for desulphurising gases originating from the hearth of a boiler - Google Patents
Plant for desulphurising gases originating from the hearth of a boiler Download PDFInfo
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- FR2583304A1 FR2583304A1 FR8509217A FR8509217A FR2583304A1 FR 2583304 A1 FR2583304 A1 FR 2583304A1 FR 8509217 A FR8509217 A FR 8509217A FR 8509217 A FR8509217 A FR 8509217A FR 2583304 A1 FR2583304 A1 FR 2583304A1
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- 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
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/38—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it
- B01J8/384—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it being subject to a circulatory movement only
- B01J8/388—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it being subject to a circulatory movement only externally, i.e. the particles leaving the vessel and subsequently re-entering it
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
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- 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
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/32—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with introduction into the fluidised bed of more than one kind of moving particles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/008—Adaptations for flue gas purification in steam generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/005—Fluidised bed combustion apparatus comprising two or more beds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
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- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J7/00—Arrangement of devices for supplying chemicals to fire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/50—Fluidised bed furnace
- F23G2203/501—Fluidised bed furnace with external recirculation of entrained bed material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/60—Sorption with dry devices, e.g. beds
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Biomedical Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
Description
La présente invention concerne la désulfuration des gaz de combustion d'une chaudière. The present invention relates to the desulfurization of combustion gases from a boiler.
Elle concerne plus particulièrement, quoique non limitativement, la désulfuration des gaz sortant d'un foyer à lit fluidisé où la combustion s'effectue avec agglomération des cendres sous forme de mâchefers. Un tel foyer comporte une grille mobile inclinée vers le haut de l'avant vers l'arrière, suivant le sens d'avancement du combustible. It relates more particularly, although not limitatively, the desulfurization of gases leaving a fluidized bed hearth where the combustion takes place with agglomeration of the ash in the form of bottom ash. Such a hearth comprises a movable grid inclined upward from front to rear, in the direction of advancement of the fuel.
Dans le cas de cet exemple particulier, une solution au problème de la déslfuration a eété proposée par la demande de brevet français n0 84/19515 déposée le 20 décembre 1984 au nom de la demanderesse. In the case of this particular example, a solution to the problem of deslfuration was proposed by French patent application No. 84/19515 filed on December 20, 1984 in the name of the applicant.
Cette solution consiste à injecter un agent désulfurant dans les gaz, au niveau de la zone de combustion ou sensiblement au dessus, et à séparer ensuite le circuit des solides (cendres et imbrulés) en provenance du foyer, du circuit de recyclage de l'agent désulfurant et des produits de la réaction de désulfuration. On réalise d'autant plus facilement cette séparation que l'agent désulfurant a une granulométrie plus fine que la granulometrie moyenne des poussières envolées issues du combustible. This solution consists in injecting a desulphurizing agent into the gases, at or near the combustion zone, and then separating the circuit of solids (ash and unburnt) from the hearth, from the agent recycling circuit desulfurizer and desulfurization reaction products. This separation is made all the more easily when the desulphurizing agent has a finer particle size than the average particle size of the flown dust from the fuel.
Une solution de ce genre présente quelques inconvénients lorsque les gaz sont appelés à balayer pendant un temps de séjour court,la zone de température Optimale à la réaction de désulfuration, comprise entre 7500C et 10500C. Il importe donc que, lorsqué la chaudière fonctionne à plein régime, l'agent désulfurant séjourne un temps suffisent dans la zone de température où la désulfuration est la plus efficace. Il est par ailleurs, souhaitable de créer une assez forte concentration des gaz en agent désulfurant. L'installation connue n'est pas adaptée pour répondre à ces exigences. A solution of this kind has some drawbacks when the gases are called upon to sweep, during a short residence time, the zone of temperature Optimal to the desulfurization reaction, comprised between 7500C and 10500C. It is therefore important that, when the boiler is operating at full speed, the desulfurizing agent remains for a sufficient time in the temperature zone where the desulfurization is most effective. It is also desirable to create a fairly high concentration of gases in desulfurizing agent. The known installation is not adapted to meet these requirements.
L'invention a surtout pour but de remédier aux inconvénients précités. The main object of the invention is to remedy the aforementioned drawbacks.
Elle a plus précisément pour objet une installation pour la désulfuration des gaz provenant du foyer d'une chaudière et parcourent une chambre surmontant ledit foyer avant de balayer les tubes d'échange de chaleur par convection de la chaudière, la désulfuration étant effectuée par injection d'un agent désulfurant à un niveau prédéterminé le long du parcours desdits gaz, caractérisée en ce qu'il est prévu, entre la chambre et lesdits tubes de la chaudière, une enceinte distincte de la chambre et communiquant avec celle-ci, ladite enceinte p#s- sédant des dimensions suffisantes pour que la réaction de désulfuration puisse se produire avant que les gaz atteignent lesdits tubes. More specifically, it relates to an installation for the desulfurization of gases from the hearth of a boiler and pass through a chamber surmounting said hearth before sweeping the heat exchange tubes by convection of the boiler, the desulfurization being carried out by injection of '' a desulfurizing agent at a predetermined level along the path of said gases, characterized in that there is provided, between the chamber and said tubes of the boiler, an enclosure separate from the chamber and communicating with the latter, said enclosure p # s- sedating sufficient dimensions for the desulfurization reaction to occur before the gases reach said tubes.
L'enceinte de déslfuration peut être constituée par une conduite rectiligne raccordée à la chambre. The deslfuration enclosure can be constituted by a rectilinear pipe connected to the chamber.
Cette conduite est tapissée par des tubes d'échange de chaleur par rayonnement. En variante, ladite conduite contient au moins un panneau de tubes d'échange de chaleur par rayonnement, le plan dudit panneau étant parallèle au courant des gaz. De toute façon,elle ne saurait comporter de tubes d'échange de chaleur par convection. This pipe is lined with radiant heat exchange tubes. As a variant, said pipe contains at least one panel of radiant heat exchange tubes, the plane of said panel being parallel to the flow of gases. In any case, it cannot include convection heat exchange tubes.
L'enceinte de désulfuration peut être constituée par la branche ascendante d'une conduite en forme de U dont la branche descendante, raccordée à la chambre, forme, à sa partie inférieure, un dépoussiéreur primaire de cendres et dtimbrulés. The desulphurization enclosure can be constituted by the ascending branch of a U-shaped pipe, the descending branch of which, connected to the chamber, forms, at its lower part, a primary dust and ash separator.
L'enceinte de désulfuration est avantageusement réalisée sous la forme d'une chambre de fluidisation d'un réacteur à lit circulant. The desulphurization enclosure is advantageously produced in the form of a fluidization chamber of a circulating bed reactor.
L'installation comporte deux dépoussiéreurs, respectivement primaire pour récupérer les cendres et les imbrulés, et secondaire pour récupérer l'agent désulfurant et les produits de la réaction de désulfuration, ainsi qu'un conduit de recyclage des particules sortant du dépoussiéreur secondaire. The installation comprises two dust collectors, respectively primary for recovering the ash and the unburnt material, and secondary for recovering the desulphurizing agent and the products of the desulphurization reaction, as well as a conduit for recycling the particles leaving the secondary dust collector.
L'invention sera mieux comprise en se référant à la description qui suit, faite en regard des dessins annexés, concernant deux formes particulières de réalisation données à titre d'exemples non limitatifs. The invention will be better understood by referring to the description which follows, given with reference to the appended drawings, relating to two particular embodiments given by way of nonlimiting examples.
La figure 1 représente l'installationdans le cas d'une chaudière a lit fluidisé fonctionnant avec extraction des cendres agglomérées. Figure 1 shows the installation in the case of a fluidized bed boiler operating with extraction of agglomerated ash.
La figure 2 représente une variante de l'installation. Figure 2 shows a variant of the installation.
Sur la figure 1, le repère 1 désigne le lit fluidisé qui est surmonté d'une chambre de combustion 2, laquelle est munie de parois 4 à écrans tubulaires et de tuyères 3 d'injection d'air secondaire. A la sortie de la chambre 2, les gaz traversent successivement une enceinte 5 dont il sera parlé plus explicitement plus loin, un faisceau de tubes à convection 7, un dépoussiéreur primaire 6, des échangeurs de chaudière 22 à convection, et un dépoussiéreur secondaire 8, avant d'être évacués par une cheminée non représentée. In FIG. 1, the reference 1 designates the fluidized bed which is surmounted by a combustion chamber 2, which is provided with walls 4 with tubular screens and nozzles 3 for injecting secondary air. On leaving the chamber 2, the gases pass successively through an enclosure 5 which will be discussed more explicitly below, a bundle of convection tubes 7, a primary dust collector 6, convection boiler exchangers 22, and a secondary dust collector 8 , before being evacuated by a chimney not shown.
Les échangeurs 22 sont éventuellement conçus comme économiseurs ou réchauffeurs d'air par exemple. Le dépoussiéreur 6 est d'un type mécanique usuel, tandis que le dépoussiéreur 8 est un dépoussiéreur électrostatique ou à manche, apte à effectuer une séparation plus fine que le précédent. The exchangers 22 are possibly designed as economizers or air heaters for example. The dust collector 6 is of a usual mechanical type, while the dust collector 8 is an electrostatic dust collector or with a sleeve, capable of performing a finer separation than the previous one.
On a représenté sur la figure par un trait continu S le circuit des solides issus du combustible, et par un trait discontinu D le circuit des solides constitues essentiellement de l'agent désulfurant et des produits de la réaction de désulfuration. There is shown in the figure by a solid line S the circuit of the solids from the fuel, and by a broken line D the circuit of the solids consisting essentially of the desulphurizing agent and of the products of the desulphurization reaction.
Le combustible solide (charbon, schiste, coke de pétrole, combustible végétal ou déchet) est introduit dans le lit fluidisé 1 en 9, au dessus dudit lit. Il pourrait également être introduit au sein même du lit. Solid fuel (coal, shale, petroleum coke, vegetable fuel or waste) is introduced into the fluidized bed 1 in 9, above said bed. It could also be inserted within the bed.
Cette introduction peut se faire par gravité dans une goulotte, ou par une vis, ou pneumatiquement par exemple. This introduction can be done by gravity in a chute, or by a screw, or pneumatically for example.
Une partie des cendres issues du combustible est retenue dans le lit fluidisé 1 puis évacuée en 10 sous forme de mâchefers, par suite du déplacement de la grille mobile constituant, comme cela est connu, un support de fluidisation traversé par l'air de soufflage primaire. Part of the ash from the fuel is retained in the fluidized bed 1 and then discharged at 10 in the form of bottom ash, as a result of the displacement of the movable grid constituting, as is known, a fluidization support traversed by the primary blowing air .
L'autre partie est envolée en il puis est séparée, dans une forte proportion,dans le dépoussiéreur primaire 6 pour être injectée en 12 par exemple, juste au dessus du lit fluidisé 1 ou au sein même du lit.The other part is taken off in it then is separated, in a large proportion, in the primary dust collector 6 to be injected in 12 for example, just above the fluidized bed 1 or within the bed itself.
L'agent désulfurant frais, à base de C03Ca par exemple, est introduit en 13, à la partie supérieure de la chambre 2 par tout moyen usuel. Il est entrainé par les gaz en 14 où commence la réaction de désulfuration. The fresh desulphurizing agent, based on C03Ca for example, is introduced at 13, to the upper part of the chamber 2 by any usual means. It is entrained by the gases at 14 where the desulfurization reaction begins.
L'agent désulfurant et les produits de ladite réaction traversent ensuite le dépoussiéreur 6, le dépoussiéreur 8 et sont évacués en 15 suivant un débit dosé, tandis que le reste est injecté dans la chambre 2 en 16 sensiblement au même niveau que celui de l'introduction en 13 de l'agent désulfurant frais,ou légèrement en aval, puisque le désulfurant réinjecté n'a plus besoin d'être décarbonaté.The desulfurizing agent and the products of said reaction then pass through the dust collector 6, the dust collector 8 and are evacuated by following a metered flow rate, while the remainder is injected into the chamber 2 at 16 substantially at the same level as that of the introduction at 13 of the fresh desulfurizing agent, or slightly downstream, since the re-injected desulfurizer no longer needs to be decarbonated.
L'enceinte 5 est dimensionnée de telle sorte que la réaction de désulfuration puisse se produire avant que les gaz pénètrent dans la zone des tubes à convection 7 de la chaudière. Dans le cas de la figure l'enceinte.5 est réalisée sous la forme d'une conduite exempte de tubes à convection reliant la chambre 2 au faisceau de tubes 7. Cette conduite est tapissée de tubes à échange de chaleur par rayonnement 21, ce qui est favorable à l'augmentation du temps de séjour des gaz dans ladite enceinte. Elle pourrait aussi contenir des panneaux de tubes d'échange de chaleur per rayonnement disposés sur chant, le plan de chaque panneau étant parallèle au courant de gaz.On pourrait aussi prévoir une enceinte plus longue que théoriquement nécessaire pour la désulfuration et ne pas placer de tubes d'échange de chaleur par convection à l'amont du dépoussiéreur 6, mais seulement des tubes d'échange de chaleur par rayonnement. The enclosure 5 is dimensioned so that the desulfurization reaction can take place before the gases enter the zone of the convection tubes 7 of the boiler. In the case of the figure the enclosure. 5 is produced in the form of a pipe free of convection tubes connecting the chamber 2 to the bundle of tubes 7. This pipe is lined with tubes for heat exchange by radiation 21, this which is favorable to increasing the residence time of the gases in said enclosure. It could also contain panels of heat exchange tubes per radiation arranged on edge, the plane of each panel being parallel to the gas flow. We could also provide a longer enclosure than theoretically necessary for the desulfurization and not to place any convection heat exchange tubes upstream of the dust collector 6, but only radiation heat exchange tubes.
Sur la figure 2 on a utilisé les mêmes repères que sur la figure précédente pour représenter les éléments identiques ou équivalents. On se contentera de décrire ci-après les éléments nouveaux ou ceux différemment agencés. In Figure 2 we used the same references as in the previous figure to represent the same or equivalent elements. We will simply describe below the new elements or those differently arranged.
L'enceinte est ici réalisée sous la forme de la branche ascendante Sa d'une conduite en U dont la branche descendante 5b se raccorde à la partie supérieure de la chambre 2. La branche 5b constitue une chambre de décan tation dont la base forme un séparateur analogue au dé poussiéreur primaire 6 de la figure 1. A la base de la branche 5b est aménagée une grille 17 au dessus de laquelle est recyclé l'agent désulfurant. Ceci revient à réaliser un lit circulant ou un lit fluidisé dense disposé en série avec le lit 1 de la chaudière, le matériau fluidisé étant ici essentiellement l'agent désulfurant. On peut alors utiliser un agent désulfurant plus grossier que dans le cas de la figure précédente.Les gaz chargés de particules d'agent désulfurant et des produits de la réaction de désulfuration , et contenant les suies les plus fines issues de la chambre 5b, sortent de enceinte 5a pour balayer les tubes à convection 7 du groupe évaporatoire ou du surchauffeur de vapeur de la chaudière. Le dépoussiéreur 8 sépare de ces gaz les particules précitées pour les recycler au dessus de la grille 17. L'agent désulfurant ayant capté le soufre est purgé sur ce circuit en 15 au niveau de la grille 17. L'agent désulfurant frais est injecté en un point quelconque 13 du circuit, tandis que le combustible frais est injecté en 9. Ces injections sont faites de préférence par voie pneumatique. The enclosure is here produced in the form of the ascending branch Sa of a U-shaped pipe whose descending branch 5b is connected to the upper part of the chamber 2. The branch 5b constitutes a decanting chamber whose base forms a separator similar to the primary dust collector 6 of FIG. 1. At the base of the branch 5b is a grid 17 above which the desulfurizing agent is recycled. This amounts to producing a circulating bed or a dense fluidized bed arranged in series with the bed 1 of the boiler, the fluidized material here being essentially the desulfurizing agent. It is then possible to use a coarser desulfurizing agent than in the case of the preceding figure. The gases laden with particles of desulfurizing agent and products of the desulfurization reaction, and containing the finest soot from chamber 5b, exit. enclosure 5a for sweeping the convection tubes 7 of the evaporator group or of the boiler's steam superheater. The dust collector 8 separates the aforementioned particles from these gases in order to recycle them above the grid 17. The desulfurizing agent having captured the sulfur is purged on this circuit at 15 at the level of the grid 17. The fresh desulfurizing agent is injected in any point 13 of the circuit, while the fresh fuel is injected at 9. These injections are preferably made pneumatically.
Bien que l'invention ait été décrite en référence à deux formes particulières de réalisation, il va de soi qu'elle ne leur est en rien limitée , et que des modifications peuvent lui être apportées s.ns sortir de son domaine. Although the invention has been described with reference to two particular embodiments, it goes without saying that it is in no way limited to them, and that modifications may be made thereto outside its scope.
Il est bien entendu que Invention n'est pas limitée au seul cas des foyers à lits fluidisés, mais s'applique au cas de tout autre type de foyer, que la combustion s'effectue ou non avec agglomération des cendres. It is understood that the invention is not limited to the sole case of fireplaces with fluidized beds, but applies to the case of any other type of hearth, whether or not the combustion takes place with agglomeration of the ashes.
On pourra également remplacer l'un quelconque des moyens décrits par un moyen techniquement équivalent. We can also replace any of the means described by a technically equivalent means.
L'invention couvre donc, outre les exemples repré sentés, leurs différentes variantes de réalisation possibles. The invention therefore covers, in addition to the examples shown, their different possible embodiments.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8509217A FR2583304B1 (en) | 1985-06-18 | 1985-06-18 | INSTALLATION FOR GAS DESULFURIZATION FROM THE FIREPLACE OF A BOILER. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8509217A FR2583304B1 (en) | 1985-06-18 | 1985-06-18 | INSTALLATION FOR GAS DESULFURIZATION FROM THE FIREPLACE OF A BOILER. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2583304A1 true FR2583304A1 (en) | 1986-12-19 |
| FR2583304B1 FR2583304B1 (en) | 1989-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8509217A Expired FR2583304B1 (en) | 1985-06-18 | 1985-06-18 | INSTALLATION FOR GAS DESULFURIZATION FROM THE FIREPLACE OF A BOILER. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2583304B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0388284A1 (en) * | 1989-03-14 | 1990-09-19 | Institut Français du Pétrole | Method and apparatus for burning fuels rich in chlorinated products and/or heavy metals |
| EP2354651A1 (en) * | 2010-01-18 | 2011-08-10 | Alstom Technology Ltd | System for combined flue heat recovery and dust precipitation improvement as retrofit solution for existing coal-fired power stations |
| CN112393264A (en) * | 2020-11-19 | 2021-02-23 | 郑州科技学院 | Boiler waste heat recycling system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2918580A1 (en) * | 1979-05-09 | 1980-11-20 | Pauli Gmbh Waermetechnik | Domestic or industrial refuse incineration - injects powdered lime into one or more feed-hoppers or chutes |
| DE3009366A1 (en) * | 1980-03-12 | 1981-09-24 | Wehrle-Werk Ag, 7830 Emmendingen | Flue gas dry detoxification, esp. desulphurisation plant - with fluidised bed of solid absorbent across gas path after combustion zone |
| EP0044094A1 (en) * | 1980-07-09 | 1982-01-20 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Method for desulfurization with a fluidized bed in a power plant burning pulverized coal, and power plant working according to this method |
| EP0072993A2 (en) * | 1981-08-17 | 1983-03-02 | Ingo Giesinger | Process for the desulfurisation of flue gases |
| EP0080399A1 (en) * | 1981-11-25 | 1983-06-01 | FIVES-CAIL BABCOCK, Société anonyme | Boiler using solid fuels |
| US4465000A (en) * | 1982-02-08 | 1984-08-14 | Conoco Inc. | Method of increasing the efficiency of cyclone-fired boilers using high sodium lignite fuel |
| EP0134040A1 (en) * | 1983-08-26 | 1985-03-13 | STEIN INDUSTRIE Société Anonyme dite: | Method for the injection of a pulverulent material into a combustion chamber of a boiler, and device for carrying out this method |
| EP0137599A1 (en) * | 1983-07-29 | 1985-04-17 | F.L. Smidth & Co. A/S | Treatment of flue gas |
-
1985
- 1985-06-18 FR FR8509217A patent/FR2583304B1/en not_active Expired
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2918580A1 (en) * | 1979-05-09 | 1980-11-20 | Pauli Gmbh Waermetechnik | Domestic or industrial refuse incineration - injects powdered lime into one or more feed-hoppers or chutes |
| DE3009366A1 (en) * | 1980-03-12 | 1981-09-24 | Wehrle-Werk Ag, 7830 Emmendingen | Flue gas dry detoxification, esp. desulphurisation plant - with fluidised bed of solid absorbent across gas path after combustion zone |
| EP0044094A1 (en) * | 1980-07-09 | 1982-01-20 | BBC Aktiengesellschaft Brown, Boveri & Cie. | Method for desulfurization with a fluidized bed in a power plant burning pulverized coal, and power plant working according to this method |
| EP0072993A2 (en) * | 1981-08-17 | 1983-03-02 | Ingo Giesinger | Process for the desulfurisation of flue gases |
| EP0080399A1 (en) * | 1981-11-25 | 1983-06-01 | FIVES-CAIL BABCOCK, Société anonyme | Boiler using solid fuels |
| US4465000A (en) * | 1982-02-08 | 1984-08-14 | Conoco Inc. | Method of increasing the efficiency of cyclone-fired boilers using high sodium lignite fuel |
| EP0137599A1 (en) * | 1983-07-29 | 1985-04-17 | F.L. Smidth & Co. A/S | Treatment of flue gas |
| EP0134040A1 (en) * | 1983-08-26 | 1985-03-13 | STEIN INDUSTRIE Société Anonyme dite: | Method for the injection of a pulverulent material into a combustion chamber of a boiler, and device for carrying out this method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0388284A1 (en) * | 1989-03-14 | 1990-09-19 | Institut Français du Pétrole | Method and apparatus for burning fuels rich in chlorinated products and/or heavy metals |
| FR2644560A1 (en) * | 1989-03-14 | 1990-09-21 | Inst Francais Du Petrole | METHOD AND DEVICE FOR BURNING FUELS RICH IN CHLORINATED PRODUCTS AND / OR IN HEAVY METALS |
| EP2354651A1 (en) * | 2010-01-18 | 2011-08-10 | Alstom Technology Ltd | System for combined flue heat recovery and dust precipitation improvement as retrofit solution for existing coal-fired power stations |
| WO2011086002A3 (en) * | 2010-01-18 | 2012-03-01 | Alstom Technology Ltd | System for combined flue gas heat recovery and dust precipitation improvement as retrofit solution for existing coal-fired power stations |
| AU2011206688B2 (en) * | 2010-01-18 | 2015-09-24 | General Electric Technology Gmbh | System for combined flue gas heat recovery and dust precipitation improvement as retrofit solution for existing coal-fired power stations |
| US10253973B2 (en) | 2010-01-18 | 2019-04-09 | General Electric Technology Gmbh | System for combined flue gas heat recovery and dust precipitation improvement as retrofit solution for existing coal-fired power stations |
| CN112393264A (en) * | 2020-11-19 | 2021-02-23 | 郑州科技学院 | Boiler waste heat recycling system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2583304B1 (en) | 1989-12-22 |
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