CA2093389A1 - Process for maintaining a high temperature reactor with continuous charging - Google Patents
Process for maintaining a high temperature reactor with continuous chargingInfo
- Publication number
- CA2093389A1 CA2093389A1 CA002093389A CA2093389A CA2093389A1 CA 2093389 A1 CA2093389 A1 CA 2093389A1 CA 002093389 A CA002093389 A CA 002093389A CA 2093389 A CA2093389 A CA 2093389A CA 2093389 A1 CA2093389 A1 CA 2093389A1
- Authority
- CA
- Canada
- Prior art keywords
- high temperature
- temperature reactor
- lower hearth
- reactor
- hearth part
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/085—High-temperature heating means, e.g. plasma, for partly melting the waste
-
- 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/12—Working chambers or casings; Supports therefor
- F27B2003/125—Hearths
-
- 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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D2001/0046—Means to facilitate repair or replacement or prevent quick wearing
- F27D2001/005—Removable part or structure with replaceable elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
A B S T R A C T
A process for maintaining a high temperature reactor is described, in which the lower hearth part which has become damaged as a result of mechanical, chemical and/or thermal stressing and which forms a construc-tional unit with the molten bath hearth is replaced by a reserve unit. For this purpose the high temperature reactor charging is interrupted and in the lower hearth part the molten liquid is drained off from the molten bath. The combined burners passed by means of cooling jackets through the hearth wall are removed and the connecting elements between the upper and hearth parts are released. The hot lower part is then removed from its operating position. The previously preheated reserve unit is brought into the operating position and the combined burners with the oxygen supplies are introduced into the cooling jackets of the reserve unit.
A process for maintaining a high temperature reactor is described, in which the lower hearth part which has become damaged as a result of mechanical, chemical and/or thermal stressing and which forms a construc-tional unit with the molten bath hearth is replaced by a reserve unit. For this purpose the high temperature reactor charging is interrupted and in the lower hearth part the molten liquid is drained off from the molten bath. The combined burners passed by means of cooling jackets through the hearth wall are removed and the connecting elements between the upper and hearth parts are released. The hot lower part is then removed from its operating position. The previously preheated reserve unit is brought into the operating position and the combined burners with the oxygen supplies are introduced into the cooling jackets of the reserve unit.
Description
~0933~9 PROCESS FOR ~AINTAINING A HIGH TEMPERATURE REACTOR
WITH CONTINUOUS CHARGING
The invention relates to a process for maintaining a high temperature reactor in which the carbon obtained by the thermsl transformation of organic refuse consti-tuants or other continuously supplied disposal products is gasified by msans of o~ygen and the inorganic con-stituents of said disposal proclucts are melted.
High temperature reactor maintenance processes are labour-intensive and ex-tremely time-consuming corre-sponding to the maintenance and repair processes for blast furnaces, rotary hi].ns, etc. The high opera-tin~
temperatures in such reactors make it necessary to haYe a thich-walled lining Oe the furnace with appropriate refractory material, which can be formed from a ramming material, but in the case of multiple linings is usually partly formed from prefabricaied refractory bricks. Cast or rammed linings, as well as refractory brick furnace linings must be temp~red for a long period prior to putting into use. On ~topping a reactor requiring repair it is necessary to wait for a long time to enable the furnace to cool to a suitable temperature, For e.~ample, rotary kilns used for refuse incineration purposes have to be stopped or shut down twice yearly for in eac~ case 6 weeks, so that the necessary repairs can be made to the damaged lining.
The situation is similar in the case of. blast furnaces, in which molten metal is produced or metallurgical processes take place. In order to reduce the down-repair times for metal smelting furnaces made necessary due to the long cooling and reheating periods, in a process for melting metal scrap and in particular scrap iron or similar high-melting charges in a cokeless-operat~d shaft furnace, it is ~lready hnown to lo~er by moans of a hydraulic device the detachably fitted furnace underhearth following corresponding wear and 2~9~38~
repair it separately from the furnace shaft ~DE 37 42 3~9 Cl~. Such shaft furnaces are charged discontin-uously, i.e. the material is charged by means of a gas-tight closure into the top area of the furnace shaft.
Reference is also made in this connection to a metal smelting furnace with a vertical furnace shaft and flanged underhearth, in which the rin~ flange plane is radially drawn in, so that there is a particularly easily handlable flanged connection (US patent 4 291 634)-In the present case it is a question of maintaining thelower part of a high temperature reactor, in which the carbon obtained~through the thermal trsnsformation o~
organic refuse constituents is gasified by the metered addition of pure oxygen and the inorganic constituents are melted and tapped in molten form. The disposal products are preferably supplied continuously and not discontinuously by means of a pretreatment zone, such as a degassing duct, to the reactor underhearth which is subject to elevated thermal, as well as mechanical and chemical stresses and loads.
The disposal products of interest here are continuously subjected to this thermal pretreatment in unsorted, untreated and in part as liquid components and for this purpose are forced through the duct receiving same in the compressed state and in a t~pe of "caking process"
both the liquid and the volatile consti.tuents are evaporated, The thus pretreated domestic, special or industrial refuse and waste undergoes the high tempera-ture treatment in the high temperature reactor in lumpy state. This avoids the disadvantages of the hitherto known refuse incineration processes or corresponding pyrolysis processes, such as are adequately described in the literature.
- 3 - 2~ 3~9 The ~dvantages are in particular closed and therefora non-environmentally prejudicial procsss engineering, whilst avoiding the high air flow rat~s necessarily existing in the case of conventional incineration plants. In the known melting procasses for previousl~
pyrolyzed disposal products within a high temperature reactor, in which introduction takes place in the form of a packed bed, it has been ~ound that it is not possible to ensure an ad~quate gas permeability within the packed bed, so that despite high energy costs there is an inadequate production of gas and vary long residsnce times in the reactor occur.
The lump-form, continuous introduction of the mat~rial to be melted into the high temperature reactor reliably obviates this problem. The hi~h temperature reactor on which the maintenance procsss according to the invan-tion is used has a two-part construction, namely an upper part and a lower part detachable therefrom, i.e.
an upper stabilizing zone for the gas fractions obtained and the actual ~urnace hearth to which is con-tinuously supplied the lumpy prstreated molten material The upper snd lower parts are firmly inter-connected by means of gas and pressure-tight flange connections. The high temperaturs reactor is lined with refractory material in per se known manner, the lining being such that it is possible for there to be temperatures within the reactor batween 1600 and 2000C. Into the furnace area below the loose b~d formed issue preferably several oxygen lanc~s passed through the hearth lining and which are integrated into the combined burner and which are received by cooling j~ckets, which are in turn firmly connected to the he~rth lining. As a result of the cooling jackets for the oxygen lances passed radially fro~ the outside to the inside through the refractory ~aterial, in the contact area on the inner surface of ths lining a 2993~9 ~, temperature gradieQt is formed, which brin~s about an at least partial retrograde condensation of the material evapor~ted or liquefied by the oxygen burner, so that the most variad, uncontrolled chemical reactions and fusion processes occur. After only operating the high temperature reactor for a short time the cooling jackets of the comb:ined burner with the oxygen supplies are so intenselY fused with the refractory lining surrounding them that it is no longer possible to e~tract the same without destroyin~ the lining. As the cooling jackets only have one coolant supply line and one coolant drain line, no problems occur in connection with thair coupling and uncoupling to the reactor for repair purposes, whilst the oxygen lances, i.e. the actual combined burner, which are displaceable within the cooling jackets, are connected to 8 plurality of control connections, monitoring members, at least one auxiliary gas line, etc., so -that their replace~ent would be relatively complicated.
By means of the supply of pure oxygen or oxYgen-enriched air to the gasification or meltin~ area of the high temperature reactor, in the vicinity of the com-bined b~rner plane the lumpy bed, to the extent that it is constituted by carbon fraotions, is gasified by oxi-dation, whilst the mineral and metallic constituents are meltad, in order to directly thereafter flow in molten form into the homogenizing reactor, which is preferabl~ lined with a lining corresponding to the gasification area. The homogenizing reactor construc-tionally forms a unit with the lower part of the high temperature reactor. Within the homogenizing reactor there is a cl~rification of the melt, so that there is a completely homogeneous molten bath of mineral and/or metallic components. As a result of the particularly aggressive chel~ical and mechanical actions, as well as the high temperature ~alues prevailin~ in the _ 5 _ 2093Q3~9 gasification area of the high temperature reactor and the homoganizing reactor, the linings of the walls in the said areas with refractory material leads -to particularly hi~h levels of wear, so that the period durin~ which the high temperature reactor can be used is limited by the necessary rep~irs or at least maintenance work.
The high reactor idle times necessarily caused in accordance with the prior Rrt for repairing the linings of blast furnaces and high temperature reactors may be acceptable in the case of intermittently charged cupola furnaces or the like, but this is not the case where the supply of the material to be melted or evaporated takes place continuously as a result of the pretreat-ment thereof. In refuse treatment plants the refuse is supplied continuously. The storage of refuse compon-ents decomposing by rotting or the like, e.~. during the hot summer period in the plant supply area while the necessary si~-wae~ repair work is being carried out is impossible. The logistics on whlch such problem plants are based must e~clude such idle times. It is necessary to have alternative disposal means, which can be used durin~ the many-week repair periods.
The problem of the invention is to provide a mainten-ance process for high temperature reactors, which are in particular subject to the aforementioned problems.
which restores to the necessary operating state the strcngly loaded parts after wear has occurred much more rapidly than has hitherto been possible, so that the plant idle iimes can be considerably reduced. The long maintenance and replir costs must be independent of the given idle times for the plant.
This problem is sol~ed by the features of the claim.
It is essential to the invention that for such a high temperature reactor with a continuous reactor material - 6 - 2 ~ 9 ~
supply, there is a subdivision into a fixed reactor part and a part which is detachablc and removable therefrom, so that the replacement of this displaceable reactor part is possible in a short time and is in-dependent of the actual maintanance or repair work, The charging of such a reactor only has to be interrupted during the replacemlent of th~ dctachable reactor part and the detachment and removal of this or similar parts and their replacement by new or repaired, identical parts requires a period of time which is independent of the actual maint~3nance and/or repair.
As soon as reactor charging is interrupted for the planned replacement ~nd the solids still present in the lower hearth part are melted or gasified and the remaining molten bath has been discharged, it is possible to start the detachment of the flanges between the upper and lower parts of the high temperature reactor, whilst simultaneously or possibly shortly before or afterwards the oxygen lances can be ~ithdrawn from their cooling jackets. without it being necessary to interrupt the various connections thereof to control, checking, supply and removal units. The high temperature reactor underhearth. which forms a con-structional unit with the molten bath container, is only lo~ered by a few ~illimetres compared with the fi~ed-installed upper part of the reactor and is drawn out of its operating position. Time-synchronized with this process a corresponding reserve unit can be moved up to the high temperature reactor and the emplacement thereof for ~langing to the upper part of the high temperature reactor can take place. A sufficient time beforehand it is necessary to haat the reserve unit to a high temperature close to the operating temperature, e.g. 800C. This makes it possible, directly following the production of the pressure-tight connection between the lower and upper parts, to resume th re~ctor - 7 - ~ ~93.~8~
charging briefly interruPted for the replacsment repair operation During the flangin~ procass simultaneously the oxygen supplies are introduced into the cooling jackets of the reserve unit, so that their operation can be resumed immediately thereafter.
The lower reactor part to be repaired and which is still at the hot operating temperature can now be cooled independently of the return to op~ration of the plant and on reaching a temperature acceptable for the repairs it can again be restored to a perfect operating condition. Only when a further repair proves necessary is the intact reserve unit heated, so that it is ready to operate at the time of the ne~t rapid rcplacement.
The idle and repair times lasting several weeks necessary for high temperature reactors or comparable combustion or melting furnaces are reduced to a few hours as a result of the replacement procsss according to the invention, which guarantees the quasi-continuous operation of the complete plant, increases product-ivity, improves the operating safety and e~cludes ha~ards to the environment and risks to the operating personnel.
WITH CONTINUOUS CHARGING
The invention relates to a process for maintaining a high temperature reactor in which the carbon obtained by the thermsl transformation of organic refuse consti-tuants or other continuously supplied disposal products is gasified by msans of o~ygen and the inorganic con-stituents of said disposal proclucts are melted.
High temperature reactor maintenance processes are labour-intensive and ex-tremely time-consuming corre-sponding to the maintenance and repair processes for blast furnaces, rotary hi].ns, etc. The high opera-tin~
temperatures in such reactors make it necessary to haYe a thich-walled lining Oe the furnace with appropriate refractory material, which can be formed from a ramming material, but in the case of multiple linings is usually partly formed from prefabricaied refractory bricks. Cast or rammed linings, as well as refractory brick furnace linings must be temp~red for a long period prior to putting into use. On ~topping a reactor requiring repair it is necessary to wait for a long time to enable the furnace to cool to a suitable temperature, For e.~ample, rotary kilns used for refuse incineration purposes have to be stopped or shut down twice yearly for in eac~ case 6 weeks, so that the necessary repairs can be made to the damaged lining.
The situation is similar in the case of. blast furnaces, in which molten metal is produced or metallurgical processes take place. In order to reduce the down-repair times for metal smelting furnaces made necessary due to the long cooling and reheating periods, in a process for melting metal scrap and in particular scrap iron or similar high-melting charges in a cokeless-operat~d shaft furnace, it is ~lready hnown to lo~er by moans of a hydraulic device the detachably fitted furnace underhearth following corresponding wear and 2~9~38~
repair it separately from the furnace shaft ~DE 37 42 3~9 Cl~. Such shaft furnaces are charged discontin-uously, i.e. the material is charged by means of a gas-tight closure into the top area of the furnace shaft.
Reference is also made in this connection to a metal smelting furnace with a vertical furnace shaft and flanged underhearth, in which the rin~ flange plane is radially drawn in, so that there is a particularly easily handlable flanged connection (US patent 4 291 634)-In the present case it is a question of maintaining thelower part of a high temperature reactor, in which the carbon obtained~through the thermal trsnsformation o~
organic refuse constituents is gasified by the metered addition of pure oxygen and the inorganic constituents are melted and tapped in molten form. The disposal products are preferably supplied continuously and not discontinuously by means of a pretreatment zone, such as a degassing duct, to the reactor underhearth which is subject to elevated thermal, as well as mechanical and chemical stresses and loads.
The disposal products of interest here are continuously subjected to this thermal pretreatment in unsorted, untreated and in part as liquid components and for this purpose are forced through the duct receiving same in the compressed state and in a t~pe of "caking process"
both the liquid and the volatile consti.tuents are evaporated, The thus pretreated domestic, special or industrial refuse and waste undergoes the high tempera-ture treatment in the high temperature reactor in lumpy state. This avoids the disadvantages of the hitherto known refuse incineration processes or corresponding pyrolysis processes, such as are adequately described in the literature.
- 3 - 2~ 3~9 The ~dvantages are in particular closed and therefora non-environmentally prejudicial procsss engineering, whilst avoiding the high air flow rat~s necessarily existing in the case of conventional incineration plants. In the known melting procasses for previousl~
pyrolyzed disposal products within a high temperature reactor, in which introduction takes place in the form of a packed bed, it has been ~ound that it is not possible to ensure an ad~quate gas permeability within the packed bed, so that despite high energy costs there is an inadequate production of gas and vary long residsnce times in the reactor occur.
The lump-form, continuous introduction of the mat~rial to be melted into the high temperature reactor reliably obviates this problem. The hi~h temperature reactor on which the maintenance procsss according to the invan-tion is used has a two-part construction, namely an upper part and a lower part detachable therefrom, i.e.
an upper stabilizing zone for the gas fractions obtained and the actual ~urnace hearth to which is con-tinuously supplied the lumpy prstreated molten material The upper snd lower parts are firmly inter-connected by means of gas and pressure-tight flange connections. The high temperaturs reactor is lined with refractory material in per se known manner, the lining being such that it is possible for there to be temperatures within the reactor batween 1600 and 2000C. Into the furnace area below the loose b~d formed issue preferably several oxygen lanc~s passed through the hearth lining and which are integrated into the combined burner and which are received by cooling j~ckets, which are in turn firmly connected to the he~rth lining. As a result of the cooling jackets for the oxygen lances passed radially fro~ the outside to the inside through the refractory ~aterial, in the contact area on the inner surface of ths lining a 2993~9 ~, temperature gradieQt is formed, which brin~s about an at least partial retrograde condensation of the material evapor~ted or liquefied by the oxygen burner, so that the most variad, uncontrolled chemical reactions and fusion processes occur. After only operating the high temperature reactor for a short time the cooling jackets of the comb:ined burner with the oxygen supplies are so intenselY fused with the refractory lining surrounding them that it is no longer possible to e~tract the same without destroyin~ the lining. As the cooling jackets only have one coolant supply line and one coolant drain line, no problems occur in connection with thair coupling and uncoupling to the reactor for repair purposes, whilst the oxygen lances, i.e. the actual combined burner, which are displaceable within the cooling jackets, are connected to 8 plurality of control connections, monitoring members, at least one auxiliary gas line, etc., so -that their replace~ent would be relatively complicated.
By means of the supply of pure oxygen or oxYgen-enriched air to the gasification or meltin~ area of the high temperature reactor, in the vicinity of the com-bined b~rner plane the lumpy bed, to the extent that it is constituted by carbon fraotions, is gasified by oxi-dation, whilst the mineral and metallic constituents are meltad, in order to directly thereafter flow in molten form into the homogenizing reactor, which is preferabl~ lined with a lining corresponding to the gasification area. The homogenizing reactor construc-tionally forms a unit with the lower part of the high temperature reactor. Within the homogenizing reactor there is a cl~rification of the melt, so that there is a completely homogeneous molten bath of mineral and/or metallic components. As a result of the particularly aggressive chel~ical and mechanical actions, as well as the high temperature ~alues prevailin~ in the _ 5 _ 2093Q3~9 gasification area of the high temperature reactor and the homoganizing reactor, the linings of the walls in the said areas with refractory material leads -to particularly hi~h levels of wear, so that the period durin~ which the high temperature reactor can be used is limited by the necessary rep~irs or at least maintenance work.
The high reactor idle times necessarily caused in accordance with the prior Rrt for repairing the linings of blast furnaces and high temperature reactors may be acceptable in the case of intermittently charged cupola furnaces or the like, but this is not the case where the supply of the material to be melted or evaporated takes place continuously as a result of the pretreat-ment thereof. In refuse treatment plants the refuse is supplied continuously. The storage of refuse compon-ents decomposing by rotting or the like, e.~. during the hot summer period in the plant supply area while the necessary si~-wae~ repair work is being carried out is impossible. The logistics on whlch such problem plants are based must e~clude such idle times. It is necessary to have alternative disposal means, which can be used durin~ the many-week repair periods.
The problem of the invention is to provide a mainten-ance process for high temperature reactors, which are in particular subject to the aforementioned problems.
which restores to the necessary operating state the strcngly loaded parts after wear has occurred much more rapidly than has hitherto been possible, so that the plant idle iimes can be considerably reduced. The long maintenance and replir costs must be independent of the given idle times for the plant.
This problem is sol~ed by the features of the claim.
It is essential to the invention that for such a high temperature reactor with a continuous reactor material - 6 - 2 ~ 9 ~
supply, there is a subdivision into a fixed reactor part and a part which is detachablc and removable therefrom, so that the replacement of this displaceable reactor part is possible in a short time and is in-dependent of the actual maintanance or repair work, The charging of such a reactor only has to be interrupted during the replacemlent of th~ dctachable reactor part and the detachment and removal of this or similar parts and their replacement by new or repaired, identical parts requires a period of time which is independent of the actual maint~3nance and/or repair.
As soon as reactor charging is interrupted for the planned replacement ~nd the solids still present in the lower hearth part are melted or gasified and the remaining molten bath has been discharged, it is possible to start the detachment of the flanges between the upper and lower parts of the high temperature reactor, whilst simultaneously or possibly shortly before or afterwards the oxygen lances can be ~ithdrawn from their cooling jackets. without it being necessary to interrupt the various connections thereof to control, checking, supply and removal units. The high temperature reactor underhearth. which forms a con-structional unit with the molten bath container, is only lo~ered by a few ~illimetres compared with the fi~ed-installed upper part of the reactor and is drawn out of its operating position. Time-synchronized with this process a corresponding reserve unit can be moved up to the high temperature reactor and the emplacement thereof for ~langing to the upper part of the high temperature reactor can take place. A sufficient time beforehand it is necessary to haat the reserve unit to a high temperature close to the operating temperature, e.g. 800C. This makes it possible, directly following the production of the pressure-tight connection between the lower and upper parts, to resume th re~ctor - 7 - ~ ~93.~8~
charging briefly interruPted for the replacsment repair operation During the flangin~ procass simultaneously the oxygen supplies are introduced into the cooling jackets of the reserve unit, so that their operation can be resumed immediately thereafter.
The lower reactor part to be repaired and which is still at the hot operating temperature can now be cooled independently of the return to op~ration of the plant and on reaching a temperature acceptable for the repairs it can again be restored to a perfect operating condition. Only when a further repair proves necessary is the intact reserve unit heated, so that it is ready to operate at the time of the ne~t rapid rcplacement.
The idle and repair times lasting several weeks necessary for high temperature reactors or comparable combustion or melting furnaces are reduced to a few hours as a result of the replacement procsss according to the invention, which guarantees the quasi-continuous operation of the complete plant, increases product-ivity, improves the operating safety and e~cludes ha~ards to the environment and risks to the operating personnel.
Claims
THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
l)Process for maintaining a high temperature reactor, in which the carbon obtained by the thermal transformation organic refuse constituents or other continuously supplied disposal products is gasified by means of oxygen and the inorganic constituents of these disposal products are melted, by the replacement of the lower hearth part which has become damaged by mechanical chemical and/or thermal stressing, which is flanged to the fixed upper part of the high temperature reactor operated as a melting and homogenizing reactor and forming a constructional unit with a molten bath hearth by a reserve unit corresponding thereto, the replace-ment taking place in the following process steps a) the charging of the high temperature reactor is exclusively interrupted during the replacement of the lower hearth part, b) the solids still present in the lower hearth part at the start of the charging interruption are com-pletely gasified and melted by means of combined burners and the molten liquid is drained off from the molten bath, c) the combined burners with the oxygen supplies provided with cooling jackets and guided through the wall of the lower hearth part are removed from the cooling jackets, d) the connecting elements between the upper part and the lower hearth part of the high temperature reactor are released and the lower hearth part is slightly lowered, e) the hot, lower hearth part is now removed from its operating position, f) the reserve lower hearth part previously pre-heated for the immediate putting into operation of the high temperature reactor is brought into the operating position and connected in pressure tight manner to the upper part of the high temperature reactor, g) the combined burners with the oxygen supplies are introduced into the cooling jackets of the reserve unit of the lower hearth part and put into operation, h) high temperature reactor charging is resumed, i) the maintenance of the lower hearth part to be overhauled and which has been removed from the operat-ing position takes place following adequate cooling, said lower hearth part again being available as a reserve part after maintenance has taken place.
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
l)Process for maintaining a high temperature reactor, in which the carbon obtained by the thermal transformation organic refuse constituents or other continuously supplied disposal products is gasified by means of oxygen and the inorganic constituents of these disposal products are melted, by the replacement of the lower hearth part which has become damaged by mechanical chemical and/or thermal stressing, which is flanged to the fixed upper part of the high temperature reactor operated as a melting and homogenizing reactor and forming a constructional unit with a molten bath hearth by a reserve unit corresponding thereto, the replace-ment taking place in the following process steps a) the charging of the high temperature reactor is exclusively interrupted during the replacement of the lower hearth part, b) the solids still present in the lower hearth part at the start of the charging interruption are com-pletely gasified and melted by means of combined burners and the molten liquid is drained off from the molten bath, c) the combined burners with the oxygen supplies provided with cooling jackets and guided through the wall of the lower hearth part are removed from the cooling jackets, d) the connecting elements between the upper part and the lower hearth part of the high temperature reactor are released and the lower hearth part is slightly lowered, e) the hot, lower hearth part is now removed from its operating position, f) the reserve lower hearth part previously pre-heated for the immediate putting into operation of the high temperature reactor is brought into the operating position and connected in pressure tight manner to the upper part of the high temperature reactor, g) the combined burners with the oxygen supplies are introduced into the cooling jackets of the reserve unit of the lower hearth part and put into operation, h) high temperature reactor charging is resumed, i) the maintenance of the lower hearth part to be overhauled and which has been removed from the operat-ing position takes place following adequate cooling, said lower hearth part again being available as a reserve part after maintenance has taken place.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4211514.0 | 1992-04-06 | ||
| DE4211514A DE4211514C1 (en) | 1992-04-06 | 1992-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2093389A1 true CA2093389A1 (en) | 1993-10-07 |
Family
ID=6456208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002093389A Abandoned CA2093389A1 (en) | 1992-04-06 | 1993-04-05 | Process for maintaining a high temperature reactor with continuous charging |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0564963B1 (en) |
| JP (1) | JP3084168B2 (en) |
| KR (1) | KR100246506B1 (en) |
| CN (1) | CN1080391A (en) |
| AT (1) | ATE140077T1 (en) |
| AU (1) | AU657850B2 (en) |
| CA (1) | CA2093389A1 (en) |
| DE (2) | DE4211514C1 (en) |
| DK (1) | DK0564963T3 (en) |
| ES (1) | ES2089621T3 (en) |
| TW (1) | TW213972B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103960754B (en) * | 2014-04-25 | 2016-06-01 | 新疆农业科学院农业机械化研究所 | Disc type recirculating air drying plant and method |
| KR101934511B1 (en) | 2018-05-14 | 2019-01-02 | 김창성 | Coupler for clamping polishing disk |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3482533A (en) * | 1968-06-28 | 1969-12-09 | Borge Richard Ankersen | Incinerators |
| GB1410099A (en) * | 1973-06-11 | 1975-10-15 | Electricity Council | Cupolas or shaft furnaces |
| US4291634A (en) * | 1980-05-29 | 1981-09-29 | Union Carbide Corporation | Solid refuse disposal apparatus |
| DE3529740C1 (en) * | 1985-08-20 | 1987-01-08 | Greul Artur Richard | Process and equipment for gasifying carbonaceous wastes, if appropriate with addition of toxic and highly toxic wastes, to give synthesis gas |
| FR2591725B1 (en) * | 1985-12-13 | 1989-11-24 | Clecim Sa | METHOD AND INSTALLATION FOR MAINTAINING THE COATING OF AN OVEN TANK |
| US4848250A (en) * | 1988-08-25 | 1989-07-18 | Wunderley John M | Refuse converter |
| DE59108437D1 (en) * | 1991-06-18 | 1997-02-06 | Thermoselect Ag | Process for the utilization of waste, in which waste is thermally treated and completely converted |
-
1992
- 1992-04-06 DE DE4211514A patent/DE4211514C1/de not_active Expired - Fee Related
-
1993
- 1993-03-24 KR KR1019930004608A patent/KR100246506B1/en not_active IP Right Cessation
- 1993-03-30 EP EP93105283A patent/EP0564963B1/en not_active Expired - Lifetime
- 1993-03-30 DK DK93105283.1T patent/DK0564963T3/en active
- 1993-03-30 AT AT93105283T patent/ATE140077T1/en active
- 1993-03-30 ES ES93105283T patent/ES2089621T3/en not_active Expired - Lifetime
- 1993-03-30 DE DE59303104T patent/DE59303104D1/en not_active Expired - Fee Related
- 1993-04-05 CN CN93105440A patent/CN1080391A/en active Pending
- 1993-04-05 JP JP05078152A patent/JP3084168B2/en not_active Expired - Lifetime
- 1993-04-05 AU AU36706/93A patent/AU657850B2/en not_active Ceased
- 1993-04-05 CA CA002093389A patent/CA2093389A1/en not_active Abandoned
- 1993-04-14 TW TW082102838A patent/TW213972B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2089621T3 (en) | 1996-10-01 |
| DE59303104D1 (en) | 1996-08-08 |
| AU3670693A (en) | 1993-10-14 |
| EP0564963A2 (en) | 1993-10-13 |
| DK0564963T3 (en) | 1996-07-29 |
| KR100246506B1 (en) | 2000-04-01 |
| JPH0626631A (en) | 1994-02-04 |
| KR930022043A (en) | 1993-11-23 |
| JP3084168B2 (en) | 2000-09-04 |
| AU657850B2 (en) | 1995-03-23 |
| EP0564963B1 (en) | 1996-07-03 |
| TW213972B (en) | 1993-10-01 |
| DE4211514C1 (en) | 1993-06-17 |
| ATE140077T1 (en) | 1996-07-15 |
| EP0564963A3 (en) | 1994-02-02 |
| CN1080391A (en) | 1994-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20020405 |