WO2000061499A1 - Adjustment of the conditioning of feed water of boilers, heating systems and steam generators - Google Patents

Adjustment of the conditioning of feed water of boilers, heating systems and steam generators Download PDF

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Publication number
WO2000061499A1
WO2000061499A1 PCT/FR2000/000856 FR0000856W WO0061499A1 WO 2000061499 A1 WO2000061499 A1 WO 2000061499A1 FR 0000856 W FR0000856 W FR 0000856W WO 0061499 A1 WO0061499 A1 WO 0061499A1
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WIPO (PCT)
Prior art keywords
circuit
measurement
oxygen
conditioning
boilers
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PCT/FR2000/000856
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French (fr)
Inventor
Gilbert Brelet
Luc Joyau
Original Assignee
Bwt France
JOYAU, Isabelle
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bwt France, JOYAU, Isabelle filed Critical Bwt France
Priority to AU38242/00A priority Critical patent/AU3824200A/en
Priority to EP00917126A priority patent/EP1169266A1/en
Publication of WO2000061499A1 publication Critical patent/WO2000061499A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D11/00—Feed-water supply not provided for in other main groups
    • F22D11/006—Arrangements of feedwater cleaning with a boiler

Definitions

  • the present invention relates to a method for regulating the treatment and conditioning of boiler feed water, hot circuits, as well as steam generator water, and circuits working at low, medium and high pressure, etc. ..
  • Oxygen and carbon dioxide are responsible for serious corrosion phenomena in the supply circuit, the boiler and the steam network.
  • Mineral salts and organic matter will precipitate in the form of scale and concentration in the form of scale and sludge which impede good heat exchange, which reduce yields, increase fuel consumption and create local overheating which can cause equipment to burst and / or destroy.
  • boilers and circuits therefore necessitates the incorporation in the drinking water of the steam generators and in the water of the generators with a corrosion inhibiting agent of the type in particular simple or combined oxygen reducer (mineral or organic) or associated with one or other agents (phosphating, basifying, dispersing or other ...) in order to create protective conditions.
  • a corrosion inhibiting agent of the type in particular simple or combined oxygen reducer (mineral or organic) or associated with one or other agents (phosphating, basifying, dispersing or other ...) in order to create protective conditions.
  • a first method consists of injecting additives into the cold make-up water using a metering pump , this dosage being a function of the flow rate;
  • a second method also resides in injecting additives into the drinking water of the steam generator, as a function of an evaluation of the average temperature of the water in the circuit, resulting from knowledge of the additions and returns condensate.
  • Document EP 0 203 782 discloses a control method which requires, to produce an output signal which makes it possible to control a metering pump, at least two measurements, one of which is a temperature measurement or a dissolved oxygen measurement, the other being a flow measurement.
  • the injection of the inhibitor product is therefore done by taking a safety margin necessary to maintain the quantities of excess inhibitor and generally this margin is calculated for the most unfavorable case (lowest temperature of the installation or circuit) , these excess injections lead on the one hand undoubtedly to overconsumption and additional costs in products and on the other hand to a deterioration of the environment and an additional cost of energy linked to the need to increase the deconcentration purges.
  • the present invention therefore aims to overcome these drawbacks by proposing a process for regulating the treatment and conditioning of boiler feed water and boiler water which applies to all the operating conditions of the installation (temperature variations , operating, flow, etc.).
  • the process for regulating the treatment and conditioning of the water supplying boilers or steam generators and any hot circuit is characterized in that it consists in carrying out a single measurement of the temperature of the circuit, then convert the measurement of this temperature using a calculation algorithm into a value representative of the quantity of oxygen, then according to the chemical equation making it possible to determine the quantity of agents ensuring the reduction or the inhibition of the quantity of oxygen, to carry out the dosage and the injection of the inhibitor agent (s) in the circuit.
  • FIG. 1 is an abacus giving for various temperature values the amount of dissolved oxygen at a given pressure
  • FIG. 2 is a diagram of an installation which can be equipped with the regulation method which is the subject of the invention.
  • this consists in providing for a measurement of a physicochemical parameter, at any place on the circuit of the installation, located in particular at the level of the steam generator supply pipe or at any other point deemed suitable for giving a significant value of the physico-chemical state of the boiler's drinking water.
  • This measurement can consist, for example, of a temperature measurement.
  • This determination of the quantity of oxygen dissolved in the medium can be obtained by means of an abacus (for example cf. figure 1) which provides, for different temperature values, the concentration of dissolved oxygen.
  • abacus for example cf. figure 1
  • Other charts take into account other parameters such as the pressure parameter, etc.
  • a dosage of the corrosion inhibitor product (essentially an oxygen reducer) to be injected into the circuit is developed as a function of the stoichiometry of the chemical reaction, taking into account the actual concentration of dissolved oxygen in the medium.
  • This determination of the precise need for a corrosion inhibitor can be effectively carried out using a regulator which integrates within its circuits the different values of the parameters necessary for this determination (measurement of temperature, pressure, calculation of the concentration).
  • the control of the dosage of the inhibitor product is carried out in particular as a function of the temperature of the water circulating in the supply circuit of the steam generator.
  • the injection of the inhibitor product can be carried out at any point in the food circuit or at any other point deemed capable of giving a significant value for the physico-chemical state of the food water from the boiler or the circuit.
  • FIG. 2 represents the diagram of a typical installation which may include the regulation process which is the subject of the invention.
  • the reference 1 represents the food cover into which the make-up water circuit 2 opens, as well as the water from the condensate returns 3.
  • the water from the food tank 1 is introduced into a steam generator 4 via a food pump 5 disposed on the food water circuit 6. From this steam production enclosure 4, a steam start circuit is connected 7. This steam can be lost 8 or recovered 9 after use depending on the process.
  • This recovered steam (in the form of condensate) is conveyed to the food cover 1 via a condensate return circuit 3.
  • the measurement of the physico-chemical parameter can be carried out on any point of the circuit located between 1 and 4, in particular at the level of the aspiration or the delivery of the food pump 5.
  • the measurement of the physico-chemical parameter can be the result of several measurements carried out at various places in the circuit (for example, at the top and back, in different intermediate tarpaulins, etc.).
  • the process which is the subject of the invention offers multiple advantages because it applies to all the operating conditions of the installation (variations in temperature, operation, flow rate, etc.).
  • the injection is carried out strictly according to the precise application requirements of the selected inhibitor product (s), which necessarily leads to savings, in the pre-treatment, treatment, fuel consumption, while contributing to environmental protection by reducing the volume of purges.
  • this process will allow the user to comply with the physico-chemical water / steam instructions based on those requested by the manufacturer, including in particular the values of pH, of TA, TAC, Si02, excess of phosphates, excess of reducing agent, excess of dispersant, total salinity, ratio of Si02 / TAC, as well as optimizing the operating conditions.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

The invention concerns a method for regulating the treatment and conditioning of feed water of boilers or steam generators and any type of heating system. The invention is characterised in that it consists in measuring a characteristic parameter of the content of dissolved oxygen in the system, then in converting the measurement of said parameter using a computational algorithm into a value representing the amount of oxygen, then on the basis of the chemical equation for determining the amount of agents reducing or inhibiting the amount of oxygen, in measuring out and injecting the inhibiting agent(s) into the system.

Description

REGULATION DU CONDITIONNEMENT DES EAUX ALIMENTAIRES DES CHAUDIERES, DES CIRCUITS CHAUDS OU DES GENERATEURS DE VAPEURREGULATION OF THE CONDITIONING OF THE FOOD WATER OF BOILERS, HOT CIRCUITS OR STEAM GENERATORS
10 La présente invention est relative à un procédé de régulation du traitement et du conditionnement des eaux d'alimentation des chaudières, des circuits chauds, ainsi que des eaux de générateurs de vapeur, et des circuits travaillant à basse, moyenne et haute pression etc...The present invention relates to a method for regulating the treatment and conditioning of boiler feed water, hot circuits, as well as steam generator water, and circuits working at low, medium and high pressure, etc. ..
1515
Il est bien connu que les eaux naturelles sont impropres notamment à l'alimentation des chaudières travaillant à basse, moyenne et haute pression.It is well known that natural waters are unsuitable in particular for supplying boilers working at low, medium and high pressure.
0 L'oxygène et le gaz carbonique sont responsables de graves phénomènes de corrosion dans le circuit d'alimentation, la chaudière et le réseau de vapeur.0 Oxygen and carbon dioxide are responsible for serious corrosion phenomena in the supply circuit, the boiler and the steam network.
Les sels minéraux et les matières organiques vont, sous 5 l'effet de la température et de la concentration, précipiter sous forme de tartres et de boues qui nuisent aux bons échanges thermiques, qui diminuent les rendements, augmentent la consommation de combustible et créent des surchauffes locales pouvant entraîner l'éclatement et/ou la 0 destruction des matériels.Mineral salts and organic matter will precipitate in the form of scale and concentration in the form of scale and sludge which impede good heat exchange, which reduce yields, increase fuel consumption and create local overheating which can cause equipment to burst and / or destroy.
Les risques de corrosion sont encore accélérés par le pH atteint dans la chaudière, lorsqu'il est trop haut ou trop bas. Le gaz carbonique provenant de la décomposition des 5 bicarbonates et des carbonates se dissout dans l'eau condensée dès que la température descend au dessous de 90°C. Cette dissolution correspond à la formation d'acide carbonique qui est responsable des corrosions et des piqûres dans les réseaux de condensats.The risk of corrosion is further accelerated by the pH reached in the boiler, when it is too high or too low. The carbon dioxide from the decomposition of the bicarbonates and carbonates dissolves in the condensed water as soon as the temperature drops below 90 ° C. This dissolution corresponds to the formation of acid carbonic acid which is responsible for corrosions and pitting in condensate networks.
La protection des chaudières et des circuits impose donc l'incorporation dans l'eau alimentaire des générateurs de vapeur et dans 1 ' eau des générateurs d •un agent inhibiteur de corrosion du type notamment réducteur d'oxygène simple ou combiné (minéral ou organique) ou associé avec un ou d'autres agents (phosphatant, alcalinisant, dispersant ou autre...) afin de créer des conditions protectrices.The protection of boilers and circuits therefore necessitates the incorporation in the drinking water of the steam generators and in the water of the generators with a corrosion inhibiting agent of the type in particular simple or combined oxygen reducer (mineral or organic) or associated with one or other agents (phosphating, basifying, dispersing or other ...) in order to create protective conditions.
Ces additifs permettent de réaliser un traitement complet qui assure la réduction de l'oxygène, le maintien du pH, le maintien des sels minéraux (sous une forme dispersée non adhérente, facile à évacuer par une ou des purges) , la protection des surfaces métalliques ainsi que la neutralisation du gaz carbonique.These additives make it possible to carry out a complete treatment which ensures the reduction of oxygen, the maintenance of the pH, the maintenance of the mineral salts (in a dispersed nonadherent form, easy to evacuate by one or more purges), the protection of metal surfaces as well as the neutralization of carbon dioxide.
Les procédés connus de dosage de la quantité d'additifs à incorporer dans l'eau sont principalement de deux types : un premier procédé consiste en une injection d'additifs dans l'eau froide d'appoint à l'aide d'une pompe doseuse, ce dosage étant fonction du débit ;The known methods for dosing the amount of additives to be incorporated into water are mainly of two types: a first method consists of injecting additives into the cold make-up water using a metering pump , this dosage being a function of the flow rate;
- un second procédé réside également dans une injection d'additifs dans l'eau alimentaire du générateur de vapeur, en fonction d'une évaluation de la température moyenne de l'eau dans le circuit, découlant d'une connaissance des appoints et des retours de condensats.- a second method also resides in injecting additives into the drinking water of the steam generator, as a function of an evaluation of the average temperature of the water in the circuit, resulting from knowledge of the additions and returns condensate.
Néanmoins, ces types de procédés conduisent à :However, these types of processes lead to:
- des problèmes d' inertie ;- inertia problems;
- des problèmes d'hétérogénéité ; des problèmes liés à la fluctuation de la température au niveau de la bâche alimentaire.- problems of heterogeneity; problems with fluctuating temperatures in the food basket.
On connaît par le document EP 0 203 782 un procédé de régulation qui nécessite, pour produire un signal de sortie qui permette de piloter une pompe doseuse, au moins deux mesures, l'une d'entre elles étant une mesure de température ou une mesure d'oxygène dissous, l'autre étant une mesure de débit.Document EP 0 203 782 discloses a control method which requires, to produce an output signal which makes it possible to control a metering pump, at least two measurements, one of which is a temperature measurement or a dissolved oxygen measurement, the other being a flow measurement.
Les principaux inconvénients des procédés connus de l'art antérieur résident dans le fait qu'ils sont empiriques, qu'ils ne tiennent pas compte de la réalité : les générateurs de vapeur étant rarement utilisés, en régime permanent autour d'une plage de consigne déterminée, du fait d'arrêts nocturnes ou diurnes, arrêts de fin de semaine, utilisation de divers process, etc..The main drawbacks of the known methods of the prior art reside in the fact that they are empirical, that they do not take reality into account: steam generators being rarely used, in steady state around a set range determined, due to night or day stops, weekend stops, use of various processes, etc.
L'injection du produit inhibiteur se fait donc en prenant une marge de sécurité nécessaire au maintien des quantités d'inhibiteur en excès et généralement cette marge est calculée pour le cas le plus défavorable (température de l'installation ou du circuit la plus basse), ces injections en excès conduisent d'une part indubitablement à des surconsommations et des surcoûts en produits et d'autre part à une détérioration de l'environnement et un surcoût en énergie lié à la nécessité d'augmenter les purges de déconcentration.The injection of the inhibitor product is therefore done by taking a safety margin necessary to maintain the quantities of excess inhibitor and generally this margin is calculated for the most unfavorable case (lowest temperature of the installation or circuit) , these excess injections lead on the one hand undoubtedly to overconsumption and additional costs in products and on the other hand to a deterioration of the environment and an additional cost of energy linked to the need to increase the deconcentration purges.
La présente invention vise donc à pallier ces inconvénients en proposant un procédé de régulation du traitement et du conditionnement des eaux d • alimentation des chaudières et des eaux de chaudières qui s'applique à toutes les conditions de fonctionnement de l'installation (variations de température, de fonctionnement, de débit, etc...).The present invention therefore aims to overcome these drawbacks by proposing a process for regulating the treatment and conditioning of boiler feed water and boiler water which applies to all the operating conditions of the installation (temperature variations , operating, flow, etc.).
A cet effet, le procédé de régulation du traitement et du conditionnement des eaux d'alimentation des chaudières ou des générateurs de vapeur ainsi que tout circuit chaud, se caractérise en ce qu'il consiste à effectuer une mesure unique de la température du circuit, puis à convertir la mesure de cette température à l'aide d'un algorithme de calcul en une valeur représentative de la quantité d'oxygène, puis en fonction de l'équation chimique permettant de déterminer la quantité d'agents assurant la réduction ou l'inhibition de la quantité d'oxygène, à effectuer le dosage et l'injection du ou des agents inhibiteurs dans le circuit.To this end, the process for regulating the treatment and conditioning of the water supplying boilers or steam generators and any hot circuit is characterized in that it consists in carrying out a single measurement of the temperature of the circuit, then convert the measurement of this temperature using a calculation algorithm into a value representative of the quantity of oxygen, then according to the chemical equation making it possible to determine the quantity of agents ensuring the reduction or the inhibition of the quantity of oxygen, to carry out the dosage and the injection of the inhibitor agent (s) in the circuit.
D'autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-après, en référence aux dessins annexés qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif. Sur les figures :Other characteristics and advantages of the present invention will emerge from the description given below, with reference to the appended drawings which illustrate an embodiment thereof devoid of any limiting character. In the figures:
- la figure 1 est un abaque donnant pour diverses valeurs de température la quantité d' oxygène dissous à une pression donnée ;- Figure 1 is an abacus giving for various temperature values the amount of dissolved oxygen at a given pressure;
(selon un autre mode de fonctionnement, non représentés sur les figures, le procédé intégrera également la notion de pression de circuit) . la figure 2 est un schéma d'une installation pouvant être équipée du procédé de régulation objet de l'invention.(according to another operating mode, not shown in the figures, the method will also integrate the concept of circuit pressure). FIG. 2 is a diagram of an installation which can be equipped with the regulation method which is the subject of the invention.
Selon un mode préféré d'une installation permettant la mise en oeuvre du procédé objet de l'invention, celle-ci consiste à prévoir une prise de mesure d'un paramètre physico-chimique, à un endroit quelconque du circuit de l'installation, situé notamment au niveau de la canalisation d'alimentation du générateur de vapeur ou en tout autre point jugé apte à donner une valeur significative de l'état physico-chimique de l'eau alimentaire de la chaudière. Cette mesure peut consister par exemple en une mesure de température.According to a preferred mode of an installation allowing the implementation of the process which is the subject of the invention, this consists in providing for a measurement of a physicochemical parameter, at any place on the circuit of the installation, located in particular at the level of the steam generator supply pipe or at any other point deemed suitable for giving a significant value of the physico-chemical state of the boiler's drinking water. This measurement can consist, for example, of a temperature measurement.
En fonction de cette mesure du paramètre physico-chimique choisi, et notamment dans notre cas de la mesure de la température, on peut déterminer la concentration ou la solubilité en oxygène dissous dans le milieu.Depending on this measurement of the chosen physico-chemical parameter, and in particular in our case of the temperature measurement, we can determine the concentration or solubility of dissolved oxygen in the medium.
Cette détermination de la quantité d'oxygène dissoute dans le milieu peut être obtenue grâce à un abaque (par exemple cf. figure 1) qui fournit pour différentes valeurs de températures, la concentration en oxygène dissous. D'autres abaques tiennent compte d'autres paramètres comme le paramètre pression, etc...This determination of the quantity of oxygen dissolved in the medium can be obtained by means of an abacus (for example cf. figure 1) which provides, for different temperature values, the concentration of dissolved oxygen. Other charts take into account other parameters such as the pressure parameter, etc.
Bien entendu, les valeurs de ces abaques peuvent être tabulées ou élaborées à la suite d'un calcul mathématique résultant de la mise en équation de courbes obtenues expérimentalement.Of course, the values of these charts can be tabulated or worked out following a mathematical calculation resulting from the equation of curves obtained experimentally.
Puis, on élabore un dosage du produit inhibiteur de corrosion (essentiellement un réducteur d'oxygène) à injecter dans le circuit en fonction de la stoechiométrie de la réaction chimique en prenant en compte la concentration réelle d'oxygène dissous dans le milieu.Then, a dosage of the corrosion inhibitor product (essentially an oxygen reducer) to be injected into the circuit is developed as a function of the stoichiometry of the chemical reaction, taking into account the actual concentration of dissolved oxygen in the medium.
Cette détermination du besoin précis en inhibiteur de corrosion peut être efficacement effectué à l'aide d'un régulateur qui intègre au sein de ses circuits les différentes valeurs des paramètres nécessaires à cette détermination (mesure de la température, de la pression, calcul de la concentration...). L'asservissement du dosage du produit inhibiteur s'effectue notamment en fonction de la température de 1 'eau circulant dans le circuit d'alimentation du générateur de vapeur.This determination of the precise need for a corrosion inhibitor can be effectively carried out using a regulator which integrates within its circuits the different values of the parameters necessary for this determination (measurement of temperature, pressure, calculation of the concentration...). The control of the dosage of the inhibitor product is carried out in particular as a function of the temperature of the water circulating in the supply circuit of the steam generator.
L'injection du produit inhibiteur peut être effectué en un point quelconque du circuit alimentaire ou en tout autre point jugé apte à donner une valeur significative de l'état physico-chimique de l'eau alimentaire de la chaudière ou du circuit.The injection of the inhibitor product can be carried out at any point in the food circuit or at any other point deemed capable of giving a significant value for the physico-chemical state of the food water from the boiler or the circuit.
On pourra se reporter à la figure 2 qui représente le schéma d'une installation type pouvant comporter le procédé de régulation faisant l'objet de l'invention.Reference may be made to FIG. 2 which represents the diagram of a typical installation which may include the regulation process which is the subject of the invention.
Le repère 1 représente la bâche alimentaire dans laquelle débouche le circuit d'eau d'appoint 2, ainsi que l'eau des retours de condensats 3. L'eau de la bâche alimentaire 1 est introduite dans un générateur de vapeur 4 par l'intermédiaire d'une pompe alimentaire 5 disposée sur le circuit d'eau alimentaire 6. De cette enceinte de production de vapeur 4, est connecté un circuit de départ vapeur 7. Cette vapeur peut être perdue 8 ou récupérée 9 après utilisation en fonction du process.The reference 1 represents the food cover into which the make-up water circuit 2 opens, as well as the water from the condensate returns 3. The water from the food tank 1 is introduced into a steam generator 4 via a food pump 5 disposed on the food water circuit 6. From this steam production enclosure 4, a steam start circuit is connected 7. This steam can be lost 8 or recovered 9 after use depending on the process.
Cette vapeur récupérée (sous forme de condensats) est véhiculée jusqu'à la bâche alimentaire 1 par l'intermédiaire d'un circuit retour de condensats 3.This recovered steam (in the form of condensate) is conveyed to the food cover 1 via a condensate return circuit 3.
La mesure du paramètre physico-chimique peut s'effectuer sur un point quelconque du circuit situé entre 1 et 4, notamment au niveau de 1 ' aspiration ou du refoulement de la pompe alimentaire 5.The measurement of the physico-chemical parameter can be carried out on any point of the circuit located between 1 and 4, in particular at the level of the aspiration or the delivery of the food pump 5.
Dans un autre cas de figure, la mesure du paramètre physico-chimique peut être le résultat de plusieurs mesures effectuées à divers endroits du circuit (par exemple, à l'appoint et au retour, dans différentes bâches intermédiaires, etc... ) .In another case, the measurement of the physico-chemical parameter can be the result of several measurements carried out at various places in the circuit (for example, at the top and back, in different intermediate tarpaulins, etc.).
Le procédé objet de l'invention offre de multiples avantages car il s'applique à toutes les conditions de fonctionnement de l'installation (variations de température, de fonctionnement, de débit, etc...). De plus, l'injection est réalisée strictement en fonction des exigences précises d'application du ou des produits inhibiteurs choisis, ce qui conduit nécessairement à une économie, dans le pré-traitement, le traitement, la consommation en combustible, tout en contribuant à la protection de l'environnement par une réduction du volume des purges.The process which is the subject of the invention offers multiple advantages because it applies to all the operating conditions of the installation (variations in temperature, operation, flow rate, etc.). In addition, the injection is carried out strictly according to the precise application requirements of the selected inhibitor product (s), which necessarily leads to savings, in the pre-treatment, treatment, fuel consumption, while contributing to environmental protection by reducing the volume of purges.
Parallèlement, ce procédé permettra à l'utilisateur de respecter les consignes physico-chimiques eau/vapeur en fonction de celles demandées par le constructeur, dont notamment les valeurs de pH, de TA, TAC, Si02, excès de phosphates, excès de réducteur, excès de dispersant, salinité totale, rapport de Si02/TAC, ainsi que d'optimiser les conditions de fonctionnement.At the same time, this process will allow the user to comply with the physico-chemical water / steam instructions based on those requested by the manufacturer, including in particular the values of pH, of TA, TAC, Si02, excess of phosphates, excess of reducing agent, excess of dispersant, total salinity, ratio of Si02 / TAC, as well as optimizing the operating conditions.
Ainsi, par exemple pour le cas d'une chaudière alimentant une buanderie d'hôpital :Thus, for example in the case of a boiler supplying a hospital laundry:
- en fin de semaine, arrêt de l'installation, donc pas d'injection de produit inhibiteur ; - le lundi, démarrage de l'installation, injection maximum, puis progressive en fonction de la température, jusqu'à l'obtention du régime permanent ;- at the end of the week, shutdown of the installation, therefore no injection of inhibitor product; - on Monday, start of the installation, maximum injection, then gradual depending on the temperature, until the steady state is obtained;
- du mardi au vendredi, injection du produit en fonction des fluctuations nocturnes et diurnes ; - le vendredi, augmentation de l'injection pour compenser l'arrêt de la fin de semaine, prise en compte de la baisse importante de température durant le week-end.- from Tuesday to Friday, injection of the product according to night and day fluctuations; - on Friday, increased injection to compensate for the weekend shutdown, taking into account the significant drop in temperature during the weekend.
Il demeure bien entendu que la présente invention n'est pas limitée aux exemples de réalisation décrits et représentés ci-dessus, mais qu'elle en englobe toutes les variantes. It remains to be understood that the present invention is not limited to the exemplary embodiments described and shown above, but that it encompasses all variants thereof.

Claims

REVENDICATIONS
1 - Procédé de régulation du traitement et du conditionnement des eaux d'alimentation des chaudières ou des générateurs de vapeur ainsi que tout circuit chaud, caractérisé en ce qu'il consiste à effectuer une mesure unique de la température du circuit, puis à convertir la mesure de cette température à l'aide d'un algorithme de calcul en une valeur représentative de la quantité d'oxygène, puis en fonction de l'équation chimique permettant de déterminer la quantité d'agents assurant la réduction ou l'inhibition de la quantité d'oxygène, à effectuer le dosage et l'injection du ou des agents inhibiteurs dans le circuit.1 - Process for regulating the treatment and conditioning of the water supplying boilers or steam generators as well as any hot circuit, characterized in that it consists in carrying out a single measurement of the temperature of the circuit, then in converting the measurement of this temperature using a calculation algorithm into a value representative of the quantity of oxygen, then according to the chemical equation making it possible to determine the quantity of agents ensuring the reduction or the inhibition of the quantity of oxygen, to carry out the dosage and the injection of the inhibitor agent (s) in the circuit.
2 - Procédé selon la revendication 1, caractérisé en ce que l'injection du ou des produits inhibiteurs est effectué en un point quelconque jugé apte à donner une valeur significative de l'état physico-chimique de l'eau alimentaire de la chaudière ou du circuit.2 - Process according to claim 1, characterized in that the injection of the inhibitor product (s) is carried out at any point deemed capable of giving a significant value of the physico-chemical state of the drinking water of the boiler or of the circuit.
3 - Procédé selon l'une quelconque des revendications 1 ou 2 , caractérisé en ce que la mesure du paramètre caractéristique de la teneur en oxygène dissous dans le circuit est élaboré suite au résultat de plusieurs mesures effectuées à divers endroits du circuit 3 - Method according to any one of claims 1 or 2, characterized in that the measurement of the characteristic parameter of the dissolved oxygen content in the circuit is developed following the result of several measurements carried out at various places in the circuit
PCT/FR2000/000856 1999-04-08 2000-04-05 Adjustment of the conditioning of feed water of boilers, heating systems and steam generators WO2000061499A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU38242/00A AU3824200A (en) 1999-04-08 2000-04-05 Adjustment of the conditioning of feed water of boilers, heating systems and steam generators
EP00917126A EP1169266A1 (en) 1999-04-08 2000-04-05 Adjustment of the conditioning of feed water of boilers, heating systems and steam generators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR99/04413 1999-04-08
FR9904413A FR2791972B1 (en) 1999-04-08 1999-04-08 PROCESS FOR REGULATING THE TREATMENT AND CONDITIONING OF FOOD WATER FROM BOILERS, HOT CIRCUITS OR STEAM GENERATORS

Publications (1)

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WO2000061499A1 true WO2000061499A1 (en) 2000-10-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2000/000856 WO2000061499A1 (en) 1999-04-08 2000-04-05 Adjustment of the conditioning of feed water of boilers, heating systems and steam generators

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EP (1) EP1169266A1 (en)
AU (1) AU3824200A (en)
FR (1) FR2791972B1 (en)
WO (1) WO2000061499A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572253A (en) * 1947-12-24 1951-10-23 Bailey Meter Co Flow and temperature responsive fluid conditioning system
EP0203782A2 (en) * 1985-05-31 1986-12-03 W.R. Grace & Co.-Conn. Method of and apparatus for dosing a material
JPH11156342A (en) * 1997-11-25 1999-06-15 Samson Co Ltd Membrane degasifier using deaeration with chemical according to feed water temperature

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572253A (en) * 1947-12-24 1951-10-23 Bailey Meter Co Flow and temperature responsive fluid conditioning system
EP0203782A2 (en) * 1985-05-31 1986-12-03 W.R. Grace & Co.-Conn. Method of and apparatus for dosing a material
JPH11156342A (en) * 1997-11-25 1999-06-15 Samson Co Ltd Membrane degasifier using deaeration with chemical according to feed water temperature

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 9934, Derwent World Patents Index; Class D15, AN 398702, XP002125620 *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30) *

Also Published As

Publication number Publication date
EP1169266A1 (en) 2002-01-09
AU3824200A (en) 2000-11-14
FR2791972A1 (en) 2000-10-13
FR2791972B1 (en) 2001-06-22

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