WO2007060708A1 - Regenerateur thermique a ecoulement continu - Google Patents

Regenerateur thermique a ecoulement continu Download PDF

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Publication number
WO2007060708A1
WO2007060708A1 PCT/IT2006/000822 IT2006000822W WO2007060708A1 WO 2007060708 A1 WO2007060708 A1 WO 2007060708A1 IT 2006000822 W IT2006000822 W IT 2006000822W WO 2007060708 A1 WO2007060708 A1 WO 2007060708A1
Authority
WO
WIPO (PCT)
Prior art keywords
accumulator
air
thermal
transport
loose material
Prior art date
Application number
PCT/IT2006/000822
Other languages
English (en)
Inventor
Mario Amelio
Pietropaolo Morrone
Original Assignee
Universita' Della Calabria
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 Universita' Della Calabria filed Critical Universita' Della Calabria
Publication of WO2007060708A1 publication Critical patent/WO2007060708A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
    • F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81—Solid phase processes
    • B01D53/83—Solid phase processes with moving reactants
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/14—Gaseous waste or fumes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • the invention concerns Regenerative (RTO) or Catalytic (CTO) Thermal Oxydizers, devices projected for reducing, by means of thermal oxydation, of volatile organic composits (VOC) released in the air, for example, by varnishing devices and chemical or petrolchemical industries.
  • RTO Regenerative
  • CTO Catalytic
  • VOC volatile organic composits
  • the RTO technology uses the regenerators constituted by inert material (majorly, ceramic one) preheated to deliver heat to the polluted air to treat, which, with reference to the fig. 1 enters into the device by means of a duct (1).
  • the washing valve (10') of the same regenerator is opened and cleaned air or discharged gas (washed air) is blown in.
  • the washed air pushes the uncombusted gas from the regenerator (3) into the combustion chamber (6) in which the complete oxidation of the gas arriving from the regenerator (4) occurs.
  • the oxidated gases pass from the regenerator (5), which in this phase acts as an accumulator, giving the combustion heat, and are activated in the descharge duct (7) through the descharge valve (9'"), which in this phase is open.
  • the polluted air (1) will enter into the hot regenerator (5) through the immission valve (8'") and will heat that which have realized the washing phase (3) while the regenerator (4) will go through the washing phase and so on for the following cycles.
  • Fig. 1 Device scheme of an RTO in which the represented flows illustrate the operations of pre-heating of the polluted air in the bed (3) and the heat recovery in the bed (4).
  • the bed (5) is in stand-by.
  • Fig. 2 Device scheme of an RTO in which the represented flows illustrate the operations of pre-heating of the polluted air in the bed (4) and the heat recovery in the bed (5).
  • the bed (3) is in stand-by.
  • Fig. 3 Scheme of innovative device characterized by two regenerators (3 and 4), by one combustion chamber (6) which is obteined inside the duct which links them. The inert loose material is shifted with continuity by means of screw conveyors (16) from one regenerator to another.
  • Fig. 4 Scheme of the innovative device characterized by two regenerators (3 and 4), by one combustion chamber (6) described according to another innovative solution in which the two regenerators are placed one above the other.
  • Fig. 5 The regenerator structure.
  • the bottom is a grill (19) which substains the inert material and permits an easy air passage. Description of some embodiments of the invention
  • the present invention consists of two thermal regenerators constituted by two bins containing inert loose material casually packed.
  • One works as a preheater of polluted air to treat and another works as an accumulator of energy released after the oxidation process, as a combustion chamber and as two transport systems of inert loose material.
  • the principle of functioning can be described making reference to figures 3 and 4, which show two possible embodiments of the invention.
  • the examples described here concern the RTO devices, but the application may also concern the Catalytic Regenerative Oxydizers (CRO).
  • CRO Catalytic Regenerative Oxydizers
  • the setting will take place after a transitory phase which is realized as follows.
  • the polluted air just went out of the combustion chamber (6) enters into the accumulator (4) which initially has the environment temperature.
  • the systems of loose material (11) transport are activated in order to transport the granular material from the zone of the accumulator in which the just combusted air enters (the part of the accumulator with higher temperature) to the zone of the preheater (3) from which the polluted air goes out in order to go subsequently in the combustion chamber.
  • the correspondent quantity of cold particles is taken out by means of the other transport system (11), from the zone of entrance of polluted air in the preheater (3).
  • the preheater (3) will be able to guarantee the permanent air heating, so, without the necessity to invert the flow, thanks to the continuous integration of hot particles which come from the most hot zone of the accumulator (4).
  • the same accumulator (4) on the other side will maintain its function of accumulation of thermal energy thanks to the continuous integration of cold particles which come from the coldest zone of the preheater (3).
  • a driver (12) manages the engines (16) which feed the transport systems (11) which move the material.
  • the driver (12) acts in a way to maintain constant, at a predefined value, the temperature of exit of the cleaned air from the accumulator. It, by means of a temperature sensor (13), will maintain the temperature of exit of the cleaned air from the accumulator inside a pre-chosen band of error, regulating the velocity, and consequently the flow rate, of the inert material exchanged between the two regenerators. It determines a less usage of material and, in fact, reduces the space requirement of the traditional systems.
  • the Figure 4 shows another constructive solution, in which the regenerators are positioned one above the other. Nevertheless the space requirements in vertical are major, the combustion chamber can be realized in a more easy way.
  • Figure 5 shows one possible form of the bins which contain the loose material.
  • the peculiar elements are the inclination assigned to the bottom of the regenerator, such to guarantee a uniform flow of particles through the exit duct (18) and the grill (19) with which the same bottom is constituted, suitable to guarantee a uniform flow of air inside the regenerator.
  • the proposed device does not use "flowed beds". Moreover, the velocity of gases passing must be such to avoid the fluidisation. In fact, it would lead to a uniformity of the temperatures of the inert material and to a drastic reduction of the recovery efficiency.
  • the peculiar characteristics of the invention are the following: • the circulation of the inert material between the regenerators, realized in a way to make stationary the profiles of temperature in the same material inside the regenerator as well as, consequently, those of the gases;
  • the invention certainly, is not limited, to the representation of the figures, but can receive perfections and modifications from men skilled in the art, without going out of the patent frames.
  • Present invention permits numerous advantages and, particularly, allows to overcome the difficulties that could not be superated using the systems that are actually in commerce.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)

Abstract

L'invention concerne deux régénérateurs thermiques: le premier (3) travaille comme préchauffeur et le deuxième (4) travaille comme accumulateur d'énergie thermique dans lequel les températures des matériaux sont stationnaires. Pour éviter que le préchauffeur se refroidisse progressivement au cours du temps, il est doté au moyen d'un système approprié (11) de déplacement d'un matériau en vrac (par exemple un transporteur à vis) de particules chaudes qui proviennent de la zone d'entrée de l'accumulateur dont la température, dans cette position, est toujours proche de la température de combustion (l'accumulateur reçoit l'air qui vient de sortir de la chambre de combustion (6)). De la même manière, il faut obtenir une quantité correspondante de particules froides de la zone d'entrée de l'air pollué dans le préchauffeur, qui a toujours une température proche de celle de l'environnement, et les intégrer dans la zone de sortie d'air épuré qui sort de l'accumulateur, et qui sinon aurait tendance à s'échauffer de manière excessive à cause du passage constant de gaz chaud qui sort de la chambre de combustion. De cette manière, grâce à un écoulement continu de particules, il n'est pas nécessaire de prévoir un système de distribution par clapets et on peut obtenir un écoulement continu de l'air à traiter. Par conséquent, il faut uniquement deux régénérateurs.
PCT/IT2006/000822 2005-11-28 2006-11-27 Regenerateur thermique a ecoulement continu WO2007060708A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000018A ITCZ20050018A1 (it) 2005-11-28 2005-11-28 Rigeneratori termici a flusso continuo
ITCZ2005A000018 2005-11-28

Publications (1)

Publication Number Publication Date
WO2007060708A1 true WO2007060708A1 (fr) 2007-05-31

Family

ID=37820559

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2006/000822 WO2007060708A1 (fr) 2005-11-28 2006-11-27 Regenerateur thermique a ecoulement continu

Country Status (2)

Country Link
IT (1) ITCZ20050018A1 (fr)
WO (1) WO2007060708A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107366923A (zh) * 2017-09-11 2017-11-21 山东保蓝环保工程有限公司 一种催化燃烧床及其催化燃烧方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2132797A1 (de) * 1971-07-01 1973-01-18 Zenkner Kurt Dr Ing Verfahren zum thermischen nachverbrennen von abluft aus industrieanlagen, wie trockenkammern od.dgl. und vorrichtung zur durchfuehrung dieses verfahrens
WO1997041946A1 (fr) * 1996-05-07 1997-11-13 Megtec Systems Inc. Systeme et procede de derivation destines a des dispositifs d'oxydation thermique a recuperation de chaleur
EP0990848A1 (fr) * 1998-09-29 2000-04-05 Entreprise Generale De Chauffage Industriel Pillard Procédé d'épuration thermique de gaz et incinérateur thermique régénératif
EP1304526A2 (fr) * 2001-10-09 2003-04-23 Herhof Umwelttechnik Gmbh Méthode et appareillage pour la purification des gaz de combustion
US20040076556A1 (en) * 2002-10-17 2004-04-22 Industrial Technology Research Institute Granular moving-bed apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2132797A1 (de) * 1971-07-01 1973-01-18 Zenkner Kurt Dr Ing Verfahren zum thermischen nachverbrennen von abluft aus industrieanlagen, wie trockenkammern od.dgl. und vorrichtung zur durchfuehrung dieses verfahrens
WO1997041946A1 (fr) * 1996-05-07 1997-11-13 Megtec Systems Inc. Systeme et procede de derivation destines a des dispositifs d'oxydation thermique a recuperation de chaleur
EP0990848A1 (fr) * 1998-09-29 2000-04-05 Entreprise Generale De Chauffage Industriel Pillard Procédé d'épuration thermique de gaz et incinérateur thermique régénératif
EP1304526A2 (fr) * 2001-10-09 2003-04-23 Herhof Umwelttechnik Gmbh Méthode et appareillage pour la purification des gaz de combustion
US20040076556A1 (en) * 2002-10-17 2004-04-22 Industrial Technology Research Institute Granular moving-bed apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107366923A (zh) * 2017-09-11 2017-11-21 山东保蓝环保工程有限公司 一种催化燃烧床及其催化燃烧方法
CN107366923B (zh) * 2017-09-11 2019-07-05 山东保蓝环保工程有限公司 一种催化燃烧床及其催化燃烧方法

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Publication number Publication date
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