CN205740907U - Calorifics equipment with coaxial heat exchanger - Google Patents
Calorifics equipment with coaxial heat exchanger Download PDFInfo
- Publication number
- CN205740907U CN205740907U CN201620110038.9U CN201620110038U CN205740907U CN 205740907 U CN205740907 U CN 205740907U CN 201620110038 U CN201620110038 U CN 201620110038U CN 205740907 U CN205740907 U CN 205740907U
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- CN
- China
- Prior art keywords
- calorifics
- equipment
- heat exchanger
- labyrinth
- pipe fitting
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/74—Construction of shells or jackets
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
This utility model relates to a kind of calorifics equipment with coaxial heat exchanger, this calorifics equipment with at decking flanges can a pressure shield closing hermetically of pressure with coaxial, an internal heat exchanger, this heat exchanger surrounds an inner space and forms an annular space relative to this pressure shield.The purpose that this utility model is based on provides a kind of structural solution, so that configuration this heat exchanger and transmission pressure, annular gap between appts wall (this appts wall has the long use time) in the region of this decking flanges realize in the following way, at this decking flanges with at heat exchanger, annular gap between centered above the pipe fitting arranged provides a labyrinth that can load with purge gas body.
Description
Technical field
This utility model relates to a kind of calorifics equipment, this calorifics equipment with one can the pressure shield closed hermetically of pressure with coaxial, an internal heat exchanger, this heat exchanger surrounds an inner space, is bearing in a device bottom and forms an annular space relative to this pressure shield.
Background technology
One this type of calorifics equipment has a pressure shield with closable decking flanges mostly, and this decking flanges medially arranges relative to equipment axis and has a relevant inside diameter.Additionally, this heat exchanger has the pipe fitting on a top at it towards the end of this decking flanges, the pipe fitting on this top has this type of a outer dia, and this outer dia is less than the inside diameter of this decking flanges.The pipe fitting on this top extends in this decking flanges vertically.Overvoltage can be constructed with one purging gas relative to this reaction compartment in this annular space.
Being frequently present of following problem when seal pressure space, parts adjacent to each other at sealing station differently expand due to different temperature or different materials and therefore cause calorifics causes, the relative motion of sealing member partner (Dichtungspartner).Despite the presence of relative motion, the problem of sealing is still aggravated along with the increase of pressure and temperature.
One typical application scenarios of the calorifics equipment of affiliated type is the gasification reactor for producing synthesis gas, and this gasification reactor has the pressure shield of outside and is arranged to a cooling screen of heat exchanger in this pressure shield.This cooling screen surrounds an inner space of this gasification reactor.In this inner space (this inner space is referred to as reaction compartment under this application scenarios), the temperature of up to 2000 DEG C and the pressure of up to 100 bars account for leading.Protect for the calorifics of the reactor wall of bearing pressure at the cooling screen within this gasification reactor.This cooling screen is usually formed as the coil pipe (Rohrwicklung) flowed through with cooling water; wherein these pipe pressures are welded to one another and are formed an annular space relative to this reactor wall hermetically; for protecteding from (vagabundierenden) reacting gas corrosion, spuious, purge this annular space by a kind of noble gas.Here, the pressure in the reaction compartment that surrounds only slight beyond this cooling screen of this inert gas pressure.
In order to make gas purging realize its purpose, this annular space between cooling screen and reactor wall must separate with this reaction compartment as fully as possible.Multiple problem occurs at this.
This cooling screen is typically supported on this reactor bottom, i.e. form fixing carrying there.Due to the high running temperature in this reaction zone, the temperature of the coolant in these coil pipes of this cooling screen is at most 250 DEG C.Being positioned at the reactor wall heating below of this cooling screen the most less, in general the inner side at this reactor wall is also equipped with a fire-resistant lining (Feuerfestausmauerung).
Therefore during this reactor is heated to running temperature or the disconnected period that is in operation causes the different expansion in this reactor wall and in this cooling screen.A sealing member between cooling screen and reactor wall must compensate for this relative motion.
Gasification reactor is typically cylindrical and has a decking flanges, and what the solid flange sleeve pipe of this decking flanges was sealing member installs the precondition providing good.Therefore implementing following cooling screen make recently, these cooling screen makes upwards have one and reach narrowing this lip diameter, taper.
In the past, people also have been attempted with different devices to be sealed in annular gap between decking flanges and cooling screen, consequent.
In a simple variant, only purge with high inert gas flow and there is no remaining annular gap of additional seal device (DD 237 318 A1).It is shown in which, enters the inert gas flow in this reaction compartment in the case of maintaining reaction compartment temperature, cause the shortcoming on energy, and inevitably, reacting gas may invade in this annular space between cooling screen and reactor wall.
The second variant provides an elastic sealing member (such as with the shape of sealing strip) between cooling screen and decking flanges.Operating experience shows, these sealing part abrasions obtain quickly or pile up due to slag and lose its function.
Sliding seal belongs to the third variant.To this end, this cooling screen by an air seal the pipe fitting that welds upwards extend in this decking flanges and this sliding seal is arranged in this decking flanges.This seal type also comprises a lot of problem.If using hard sliding seal material, then the form variations of the pipe fitting after foozle, especially welding causes non-hermetic, and this non-hermetic is unable to be compensated owing to encapsulant lacks flexibility.According to DE 20 2,007 011 109 U1 or DE 20 2,007 018 720 U1, in the case of using soft sliding seal (these soft sliding seals and stuffing box (Stopfbuchsen) comparability ground realize by compression its sealing function), the accumulation of these inevitable, stone slags or the high temperature of reactor relevant to corrosive reacting gas at this seal clearance cause this encapsulant Fast Wearing.
In the 4th kind of variant, by installing bellow-type expansion part (these bellow-type expansion parts close the gap between cooling screen and decking flanges) at this pipe fitting, entirely eliminated the sliding motion (such as EP 0 254 830 A2, US 4.202.672 A, DE 10 2,007 045 321 A1) between these sealing members partner.Owing to compensating part must be compensated for axial relative motion according to function, these compensating parts by thin-walled, fold metal tube make, but these metal tubes are corroded and break-through rapidly by gasification reactor in corrosive atmosphere.
Utility model content
Therefore from the shortcoming described in known prior art, the purpose that this utility model is based on is, there is provided a kind of structural solution, in order to configuration is at this cooling screen and transmission pressure, annular gap between appts wall (this appts wall has the long use time) in the region of this decking flanges.
According to this utility model, this purpose is realized by following calorifics equipment, in the annular gap being arranged between this decking flanges and this pipe fitting of a labyrinth that wherein can load with purge gas body.
According to one embodiment of the present invention, this calorifics equipment can the pressure shield closed hermetically of pressure with coaxial, an internal heat exchanger with one, this heat exchanger surrounds an inner space, is bearing in a device bottom and is formed an annular space relative to this pressure shield, wherein
-this pressure shield has a closable decking flanges, and this decking flanges medially arranges relative to equipment axis and has an inside diameter Di,
-this heat exchanger has the pipe fitting on a top at it towards the end of this decking flanges, and the pipe fitting on this top has an outer dia Da < Di, and the pipe fitting on this top extends in this decking flanges vertically,
-overvoltage can be gone out with one purging gas relative to this internal space construction in this annular space,
It is characterized in that, it is possible in the annular gap being arranged between this decking flanges and this pipe fitting with a kind of labyrinth purging gas-loaded.
Labyrinth is the classical shaft seal in steam or combustion gas turbine, rotary compressor or aeroengine.Here, this medium to be sealed is awfully hot and axle rotating speed is the highest.
This relates to the throttle type sealing member for gas, say, that gas leakage to a certain extent is inevitable.Labyrinth is generally configured to and reliable by spacer ring and choke block.In technical literature, describe in detail essential structure form and the calculating for concrete application scenarios thereof, such as, can find in " www.fachwissen-dichtungstechnik.de ".Therefore at this, solution in principle should only be described.
According to this utility model, initially the seal type for the parts development rotated is used for sealing the reactor parts of static state relative to thermal response gas.Although limiting sealing function owing to lacking rotary motion, but it is desirable to (such as from this annular space between heat exchanger and pressure shield to this reaction compartment) less volumetric flow of gas is entirely used for cooling down these restricting orifices.
In order to avoid the reacting gas of heat refluxes in this annular space after this cooling screen, a positive pressure differential must be there is at the sealing station between annular space and reaction compartment at overflow position.The most sufficiently, the flow behavior of labyrinth and the calculating of pressure differential are described exactly.Must pay attention to especially is, it should be noted that the clearance height of minimum needs and the best ratio of minor air cell's height and gap length and the ratio of gap width.The calculating of the actual pressure loss on labyrinth is being carried out in the case of seal clearance change (owing to thermal expansion is different) in view of admissible manufacturing tolerance.
Preferably, during this labyrinth is arranged at a cross section extension of this decking flanges.
Preferably, this labyrinth is formed as having labyrinth multiple seal clearance, open at this pipe fitting.
This labyrinth is preferably made of stainless steel.
These seal clearances can be purged with the purging gas from this annular space.
The cooling screen that this calorifics equipment is an air-flowing type gasification furnace and this heat exchanger is the calorifics protection for this pressure shield.
Relative to known solution, this utility model has multiple advantage:
This utility model avoids the surface of the abrasion of sealing member partner to be capable of enough seal degrees in the case of contacting at the same time.Under correct erection sequence, the definite location that these sealing member parts are required relative to each other may be realized.Being advantageously present big seal clearance when installing when cold, but material due to sealing member partner and the radial direction of restrictor ring expands when heating, seal clearance becomes less and sealing function and thus improves.In order to produce this labyrinth, can select from the variant on a large scale of anti abrasive material, rustless steel is preferably used.The actual conditions being configured to make sealing adapt to simply in different calorifics equipment of the modular of this labyrinth.
Accompanying drawing explanation
Should explain as a example by gasification reactor below according to calorifics equipment of the present utility model.Affiliated accompanying drawing is shown in which:
Fig. 1: show the cross section diagram of the top section of a gasification reactor
Fig. 2: show the schematic diagram of a labyrinth in this decking flanges
Detailed description of the invention
In the top section of a cylindrical gasification reactor figure 1 illustrates (this gasification reactor have can the pressure shield 1 closed hermetically of pressure), an inside, be arranged to coaxial close to the heat exchanger 2 (being referred to as cooling screen in the case of gasification reactor) of wall.This cooling screen is bearing on a device bottom (not shown) and is formed an annular space 4 relative to this pressure shield 1, wherein this pressure shield 1 has a closable decking flanges 5, and this decking flanges medially arranges relative to equipment axis and has an inside diameter Di (Fig. 2).
This decking flanges 5 (this decking flanges is typically also used for receiving the holder of gasification combustion chamber) is closed hermetically with flange cap (without reference to a symbol) pressure.
As the cross section from Fig. 2 illustrates appreciable, coolant channel that this heat exchanger 2 connects with having multiple air seal (symbolically being illustrated by the cooling tube 6 on a top at this) and have one axial extension of 7 configurations in top tube of outer dia Da < Di, the pipe fitting on this top is soldered on the cooling tube 6 on this top and upwards expands until in this decking flanges 5.
Overvoltage can be constructed with a kind of purging gas 8 that can carry from outside relative to this inner space 3 (reaction compartment) this heat exchanger in this annular space 4.
Can be arranged in the annular gap between this decking flanges 5 and the pipe fitting 7 centered in this decking flanges with the axial labyrinth 9 that purge gas body 8 loads.
This labyrinth 9 can be assembled by a compact bag (Paket), and this compact bag is made up of throttle point multiple, that expand around this pipe fitting 7 ringwise, and these throttle point work as seal clearance 11.These throttle point such as can be realized by the choke block of annular, these choke blocks are spaced apart from each other by the spacer ring being correspondingly located between two choke blocks, in order to form multiple minor air cell 12 the most side by side between these choke blocks and on these spacer rings.Alternatively, labyrinth other, comparable embodiment be also feasible.As shown in figure 2, it is also possible to be made up of a section.Between these inner planes and this pipe fitting 7 of choke block, formed in the range of 1/10th millimeters for purging the throttle clearance of gas 9.Two choke blocks distance to each other is about in the range of 15-20mm.About ten times of the height that the degree of depth is these throttle clearance of the minor air cell 12 between these choke blocks diametrically.Sealing function depends on the quantity of throttle clearance, and this quantity can be correspondingly adapted to the requirement of correspondence.Forming multiple eddy current in these minor air cells 12 after the throttle point that each edge is sharp-pointed, these eddy current cause the corresponding pressure loss in flow of purge gas and further reduce gas stream by each throttle point.
Due to other relative to this seal type of the configuration of the labyrinth seal as open labyrinth, known variant produces less throttling action, such as one toothed labyrinth (at this pipe fitting 7 and the choke block of the opposite side of this decking flanges 5) or a stage labyrinth (the stair-stepping stepped diameter on pipe fitting 7 and decking flanges 5), the structure form shown is for being installed in a gasification reactor most preferably be suitable for, this is due to higher purge gas flow with to the cooling of the thus higher intensity of this sealing member and due to little manufacturing cost.
In the purposes described by the labyrinth for the annular space 4 being sealed between cooling screen and pressure shield 1, it is possible to use noble gas purges this annular space 4 between these two parts.This purging gas 8 is generally introduced in the bottom of this annular space 4 (not shown) and flows up in this annular space.In the top of this cooling screen, this purging gas 8 is transferred in the inner space 3 of this gasification reactor by the penetrating part provided for this.This such as can be realized by one or more overflow ducts (not shown), and these overflow ducts lead in the gap above the labyrinth 9 of the upper edge of this pipe fitting 7.
In order to fix this labyrinth 9 vertically, this labyrinth is supported in the dimple of a machining of this decking flanges 5.The cross section extension of required radial direction can produce by backing out decking flanges 5 before being welded in this pressure shield 1 in a straightforward manner.
The extension of the tubulose of this cooling screen of mating member (pipe fitting 7) is mechanically processed at excircle, in order to reduce form variations (being schematically shown in fig. 2) by less wall thickness.
In order to install this labyrinth 9, on the coil pipe on the top first pipe fitting 7 of this cylinder being placed into this cooling screen.Afterwards, this labyrinth 9 is pushed in the dimple that should provide for this of this decking flanges 5.This labyrinth 9 makes this pipe fitting 7 be on this cooling tube 6 at the outer surface level of its machining to center.Weld to cooling tube 6 air seal on the pipe fitting 7 finally this centered and the top of this cooling screen.
Those skilled in the art can the most advantageously combine before in different configuration of the present utility model realize feature.
Reference numerals list
1 pressure shield
2 heat exchangers
3 inner spaces
4 annular spaces
5 decking flanges
6 coolant channels
7 pipe fittings
8 purging gases
9 labyrinths
10 cross section extensions
11 seal clearances
12 minor air cells
Claims (6)
1. calorifics equipment, this calorifics equipment can the pressure shield (1) closed hermetically of pressure with coaxial, an internal heat exchanger (2) with one, this heat exchanger surrounds an inner space (3), is bearing in a device bottom and is formed an annular space relative to this pressure shield (1) (4), wherein
-this pressure shield (1) has a closable decking flanges (5), and this decking flanges medially arranges relative to equipment axis and has an inside diameter Di,
-this heat exchanger (2) has the pipe fitting (7) on a top at it towards the end of this decking flanges (5), the pipe fitting on this top has an outer dia Da < Di, the pipe fitting on this top extends in this decking flanges (5) vertically
-overvoltage can be constructed with a kind of purging gas (8) relative to this inner space (3) in this annular space (4),
It is characterized in that, it is possible to the labyrinth (9) loaded with a kind of purging gas (8) is arranged in an annular gap between this decking flanges (5) and this pipe fitting (7).
Calorifics equipment the most according to claim 1, it is characterised in that this labyrinth (9) is arranged in a cross section extension (10) of this decking flanges (5).
Calorifics equipment the most according to claim 2, it is characterised in that this labyrinth (9) is formed as having labyrinth multiple seal clearance (11), open at this pipe fitting (7) place.
Calorifics equipment the most according to claim 2, it is characterised in that this labyrinth (9) is made of stainless steel.
5. according to the calorifics equipment described in claim 3 or 4, it is characterised in that these seal clearances (11) can be purged with the purging gas (8) from this annular space (4).
Calorifics equipment the most according to claim 1 and 2, it is characterised in that the cooling screen that this calorifics equipment is an air-flowing type gasification furnace and this heat exchanger (2) is the calorifics protection for this pressure shield (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015119685.9 | 2015-11-13 | ||
| DE102015119685 | 2015-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205740907U true CN205740907U (en) | 2016-11-30 |
Family
ID=57373974
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620110038.9U Active CN205740907U (en) | 2015-11-13 | 2016-02-03 | Calorifics equipment with coaxial heat exchanger |
| CN201610076240.9A Pending CN106701195A (en) | 2015-11-13 | 2016-02-03 | Calorific equipment equipped with coaxial heat exchanger |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610076240.9A Pending CN106701195A (en) | 2015-11-13 | 2016-02-03 | Calorific equipment equipped with coaxial heat exchanger |
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| Country | Link |
|---|---|
| CN (2) | CN205740907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701195A (en) * | 2015-11-13 | 2017-05-24 | 科林工业技术有限责任公司 | Calorific equipment equipped with coaxial heat exchanger |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202007018721U1 (en) * | 2007-09-21 | 2009-04-23 | Siemens Aktiengesellschaft | Air flow carburettor with cooling screen and corrugated tube compensator |
| DE202007018720U1 (en) * | 2007-09-21 | 2009-03-05 | Siemens Aktiengesellschaft | Air flow carburetor with cooling screen and sliding seal |
| DE202007018723U1 (en) * | 2007-10-25 | 2009-05-14 | Siemens Aktiengesellschaft | Air flow carburettor with cooling screen and inner water jacket |
| CN205740907U (en) * | 2015-11-13 | 2016-11-30 | 科林工业技术有限责任公司 | Calorifics equipment with coaxial heat exchanger |
-
2016
- 2016-02-03 CN CN201620110038.9U patent/CN205740907U/en active Active
- 2016-02-03 CN CN201610076240.9A patent/CN106701195A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701195A (en) * | 2015-11-13 | 2017-05-24 | 科林工业技术有限责任公司 | Calorific equipment equipped with coaxial heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106701195A (en) | 2017-05-24 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |