CN106701195A - Calorific equipment equipped with coaxial heat exchanger - Google Patents
Calorific equipment equipped with coaxial heat exchanger Download PDFInfo
- Publication number
- CN106701195A CN106701195A CN201610076240.9A CN201610076240A CN106701195A CN 106701195 A CN106701195 A CN 106701195A CN 201610076240 A CN201610076240 A CN 201610076240A CN 106701195 A CN106701195 A CN 106701195A
- Authority
- CN
- China
- Prior art keywords
- calorifics
- heat exchanger
- labyrinth
- equipment
- pipe fitting
- 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.)
- Pending
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Classifications
-
- 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
The invention relates to calorific equipment equipped with a coaxial heat exchanger. The calorific equipment is provided with a pressure shield which is pressureably closed at the flange of a cover plate and is provided with a coaxial, internal heat exchanger which surrounds an internal space and forms an annular space relative to the pressure shield. The object of the present invention is based on the provision of a structural solution for configuring an annular gap between the heat exchanger and the equipment wall (which has a long use time) for transmitting pressure and located in the area of the flange of the cover plate. The object is achieved by providing a maze-type sealed part for loading a purge gas in the annular gap between flange of the cover plate and a tube located at the center of the upper part of the heat exchanger.
Description
Technical field
The present invention relates to a kind of calorifics equipment, the calorifics equipment is with a pressure shield that can close to pressure seal and band
There is a coaxial, internal heat exchanger, the heat exchanger surrounds an inner space, is supported in a device bottom simultaneously
And form an annular space relative to the pressure shield.
Background technology
One such calorifics equipment has a pressure shield with closable decking flanges, the decking flanges mostly
Arranged with centering relative to equipment axis and with an inside diameter for correlation.Additionally, the heat exchanger is in its direction
The pipe fitting that the end of the decking flanges has the pipe fitting on top, the top has such outer dia, and this is outer
Inside diameter of portion's diameter less than the decking flanges.The pipe fitting on the top is vertically extended in the decking flanges.In the annular
Can be with a kind of purge gas relative to the reaction compartment tectonic overpressure in space.
At seal pressure space, often there are the following problems, and part adjacent to each other is due to different at sealing station
Temperature or different materials and differently expand and therefore cause that calorifics causes, seal partner
(Dichtungspartner) relative motion.Despite the presence of relative motion, the problem of sealing is still with the increasing of pressure and temperature
Plus and aggravate.
The typical application scenarios of of the calorifics equipment of affiliated type are the gasification reactors for producing synthesis gas, should
Gasification reactor has the pressure shield of outside and a cooling screen of heat exchanger is arranged in the pressure shield.The cooling screen
Surround an inner space of the gasification reactor.In the inner space, (inner space is referred to as instead under the application scenarios
Answer space) in, the pressure of up to 2000 DEG C of temperature and up to 100 bars accounts for leading.It is cold inside the gasification reactor
But the calorifics protection of the reactor wall for carrying pressure is shielded.The cooling screen is usually formed as the coil pipe flowed through with cooling water
(Rohrwicklung), wherein these pipe pressures are hermetically welded to one another and form a ring relative to the reactor wall
Shape space, to protected from corrosion, spuious (vagabundierenden) reacting gas, comes by a kind of inert gas
Purge the annular space.Here, the pressure in the reaction compartment that is surrounded only slight beyond the cooling screen of the inert gas pressure.
In order that gas purging realizes its purpose, the annular space between cooling screen and reactor wall must as far as possible
Fully separated with the reaction compartment.Occur multiple problems herein.
The cooling screen is typically supported on the reactor bottom, i.e. form fixed carrying there.Due in the reaction zone
In running temperature high, the temperature of the cooling agent in these coil pipes of the cooling screen is at most 250 DEG C.After the cooling screen
The reactor wall heating in face is substantially less, and a fire resisting lining is in general also equipped with the inside of the reactor wall
(Feuerfestausmauerung)。
Therefore cause in the reactor wall during breaking during the reactor is heated into running temperature or in operation
The expansion different with the cooling screen.A seal between cooling screen and reactor wall must compensate for the phase
To motion.
Gasification reactor be typically cylinder and with a decking flanges, the solid flange sleeve of the decking flanges
Manage as the installation of seal provides good precondition.Therefore following cooling screen make, these cooling screens are implemented recently
Make has one and reaches the lip diameter, taper narrowing upwards.
Past, people also have been attempted with different devices be sealed in it is between decking flanges and cooling screen, thus produce
Raw annular gap.
In a simple variant, remaining of no additional seal device is only purged with inert gas flow high
Annular gap (A1 of DD 237 318).It is shown in which, into the inert gas flow in the reaction compartment in maintenance reaction
Cause the shortcoming on energy in the case of space temperature, and inevitably, reacting gas may invade in cooling screen and
In the annular space between reactor wall.
Second variant provides a seal for elasticity (such as with the shape of sealing strip between cooling screen and decking flanges
Shape).Operating experience shows that these sealing part abrasions are obtained quickly or lose its function because slag is piled up.
Sliding seal belongs to the third variant.Therefore, the pipe fitting that is welded by an air seal of the cooling screen to
On extend in the decking flanges and the sliding seal is arranged in the decking flanges.The seal type is also comprising a lot
Problem.If using hard sliding seal material, foozle, especially weld after pipe fitting form variations cause it is non-close
Feng Xing, the non-hermetic is unable to be compensated because encapsulant lacks flexibility.According to the U1 of DE 20 2,007 011 109 or
The U1 of DE 20 2,007 018 720, are using soft sliding seal (these soft sliding seals and stuffing box
(Stopfbuchsen) its sealing function is realized by compression comparablely) in the case of, at the seal clearance these not
Evitable, stone slag is piled up or the high temperature of reactor related to corrosive reacting gas causes the encapsulant
Fast Wearing.
In the 4th kind of variant, by the installation bellow-type expansion part at the pipe fitting, (these bellow-type expansion parts are closed and existed
Gap between cooling screen and decking flanges), entirely eliminated sliding motion (such as EP 0 between these seals partner
254 830 A2、US 4.202.672 A、DE 10 2007 045 321 A1).Because compensating part must be compensated for axle according to function
To relative motion, these compensating parts by thin-walled, fold metal tube be made, but these metal tubes are corrosive
Rapidly corroded and break-through by gasification reactor in atmosphere.
The content of the invention
Therefore from the shortcoming described in known prior art, the purpose that the present invention is based on is, there is provided a kind of
Structural solution, so that configuration is in the cooling screen and transmission pressure, appts wall in region in the decking flanges
Annular gap between (appts wall has use time long).
According to the present invention, the purpose is realized by following calorifics equipment, wherein the fan that can be loaded with purge gas
Palace formula seal is arranged in an annular gap between the decking flanges and the pipe fitting.Advantageous embodiment is subordinate
Claimed subject matter.
Labyrinth is that the classical axle in steam or combustion gas turbine, rotary compressor or aeroengine is close
Sealing.Here, the medium to be sealed is awfully hot and rotating speed is very high.
This is related to the throttle type seal for gas, that is to say, that gas leakage to a certain extent is to keep away
Exempt from.Labyrinth is generally configured to and reliable by spacer ring and choke block.Retouched in detail in technical literature
Essential structure form and its calculating for concrete application situation have been stated, for example can be in " www.fachwissen-
Found in dichtungstechnik.de ".Therefore solution in principle should only be described herein.
According to the present invention, initially the seal type for the parts development for rotating be used for relative to thermal response gas come
Seal static reactor parts.Although limiting sealing function due to lacking rotary motion, but it is desirable to (such as being handed over from heat
The annular space between parallel operation and pressure shield is in the reaction compartment) less volumetric flow of gas is entirely used for cooling down this
A little restricting orifices.
In order to avoid the reacting gas of heat flows back in the annular space after the cooling screen, must at overflow position
There is a positive pressure differential at sealing station that must be between annular space and reaction compartment.In the literature sufficiently, accurately
Describe labyrinth flow behavior and pressure differential calculating.What must especially be paid attention to is, it should be noted that minimum to need
Clearance height and minor air cell's height best ratio and gap length and the ratio of gap width.On labyrinth
The calculating of actual pressure loss change (because thermal expansion is different) in view of admissible manufacturing tolerance and seal clearance
In the case of carry out.
Relative to known solution, the present invention has multiple advantages：
It is enough close that the present invention avoids the surface of the abrasion of seal partner from being realized in the case of contacting at the same time
Envelope degree.Under correct erection sequence, these seal parts definite positioning required relative to each other may be realized.
Big seal clearance is advantageously present when being installed in the state of cold, but in heating due to seal partner and restrictor ring
The material expand of radial direction, seal clearance becomes smaller and sealing function and thus improves.In order to produce the labyrinth, can
Selected with from the variant on a large scale of anti abrasive material, preferably use stainless steel.The structure of the modular of the labyrinth
Making can make sealing simply adapt to the actual conditions in different calorifics equipment.
Brief description of the drawings
Calorifics equipment of the invention should be explained by taking gasification reactor as an example below.Affiliated accompanying drawing is shown in which：
Fig. 1：Show a section diagram for the top section of gasification reactor
Fig. 2：Show a schematic diagram for labyrinth in the decking flanges
Specific embodiment
Figure 1 illustrates a gasification reactor for cylinder (gasification reactor have one can pressure seal ground
The pressure shield 1 of closing) top section in, inside, close to wall heat exchanger 2 (in the case of gasification reactor
Be referred to as cooling screen) be arranged to it is coaxial.The cooling screen is supported on a device bottom (not shown) and forms one
Relative to the annular space 4 of the pressure shield 1, the wherein pressure shield 1 has a closable decking flanges 5, the decking flanges
Arranged with centering relative to equipment axis and with an inside diameter Di (Fig. 2).
The decking flanges 5 (decking flanges are typically also used for receiving the holder of gasification combustion chamber) are with a flange cap
(without reference to symbol) pressure seal ground is closed.
As what be can be seen from the section diagram in Fig. 2, the heat exchanger 2 has the cooling of multiple air seals ground connection
Agent passage (symbolically being shown by a cooling tube on top 6 herein) and with outer dia Da<Di in upper tube
One extension of axial direction of the configuration of part 7, the pipe fitting on the top is soldered on the cooling tube 6 on the top and expands upwards straight
To in the decking flanges 5.
Can be with a kind of purge gas 8 that can be conveyed from outside relative in the heat exchanger in the annular space 4
Inner space 3 (reaction compartment) tectonic overpressure.
The labyrinth for axial direction 9 that can be loaded with purge gas 8 is arranged at the decking flanges 5 and at this
In annular gap between the pipe fitting 7 centered in decking flanges.
The labyrinth 9 can be assembled by a compact bag (Paket), and the compact bag is by multiple, in a ring
Ground is constituted around the throttle point of the pipe fitting 7 expansion, and these throttle points work as seal clearance 11.These throttle points for example can
Enough choke blocks by annular realize that these choke blocks are spaced by the spacer ring being correspondingly located between two choke blocks
Open, to form multiple minor air cells 12 in the axial direction each other side by side between these choke blocks and on these spacer rings.Replace
For property ground, other, the comparable implementation method of labyrinth is also feasible.As shown in figure 2, also may be used
Can be made up of a section.Between these inner planes and the pipe fitting 7 of choke block, for the throttle clearance of purge gas 9
Formed in the range of 1/10th millimeters.Two choke blocks distance to each other is about in the range of 15-20mm.Radially
On the depth of minor air cell 12 between these choke blocks be about ten times of height of these throttle clearances.Sealing function depends on
In the quantity of throttle clearance, the quantity can be correspondingly adapted to corresponding requirement.After the sharp throttle point in each edge
Multiple vortex are formed in these minor air cells 12, these vortex cause in flow of purge gas the corresponding pressure loss and by
Each throttle point further reduces gas stream.
Because the configuration of the labyrinth seal as open labyrinth is other, known relative to the seal type
Variant produce smaller throttling action, such as one toothed labyrinth is (in the opposite side of the pipe fitting 7 and the decking flanges 5
Choke block) or a stage labyrinth (the stair-stepping stepped diameter on pipe fitting 7 and decking flanges 5), the structure for being shown
Appearance shape is most preferably applicable for being installed in a gasification reactor, and this is due to purge gas flow higher and right
The cooling of the thus higher intensity of the seal and due to small manufacturing cost.
In the use described by the labyrinth for the annular space 4 being sealed between cooling screen and pressure shield 1
In way, it is possible to use inert gas purges the annular space 4 between these two parts.The purge gas 8 are generally at this
The bottom of the (not shown) of annular space 4 is introduced into and is flowed up in the annular space.In the top of the cooling screen, should
Purge gas 8 are transferred in the inner space 3 of the gasification reactor by the penetrating part provided for this.This can for example pass through
One or more overflow ducts (not shown) realize that these overflow ducts lead to the labyrinth type of the upper edge in the pipe fitting 7
In the gap of the top of seal 9.
In order to vertically fix the labyrinth 9, the labyrinth is supported in of the decking flanges 5
In the dimple of machining.The cross section extension of required radial direction can in a straightforward manner by being welded to the pressure
Backed out decking flanges 5 to produce before in cover 1.
Mating member --- extension of the tubulose of the cooling screen (pipe fitting 7) --- is mechanically processed at excircle, with
Just form variations (being schematically shown by less wall thickness in fig. 2) are reduced.
In order to install the labyrinth 9, the cylindrical pipe fitting 7 is placed into the disk on the top of the cooling screen first
Guan Shang.Afterwards, the labyrinth 9 is pushed into the dimple that should be provided for this of the decking flanges 5.The labyrinth sealing
Part 9 makes the pipe fitting 7 be centered on the cooling tube 6 at the outer surface level that it is machined.The pipe fitting 7 that finally this is centered
Welded with the air seal of cooling tube 6 on the top of the cooling screen.
Those skilled in the art can advantageously combine in other implementations before of the invention different
The feature realized in configuration.
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 purge gas
9 labyrinths
10 cross sections extension
11 seal clearances
12 minor air cells.
Claims (6)
1. calorifics equipment, the calorifics equipment with one can the pressure shield (1) closed of pressure seal ground and with one it is coaxial,
Internal heat exchanger (2), the heat exchanger surrounds an inner space (3), is supported in a device bottom and is formed
One annular space (4) relative to the pressure shield (1), wherein
- the pressure shield (1) centers ground with a closable decking flanges (5), the decking flanges relative to equipment axis
Arrange and with an inside diameter Di,
- the heat exchanger (2) has the pipe fitting (7) on top at it towards the end of the decking flanges (5), the top
Pipe fitting has an outer dia Da<Di, the pipe fitting on the top is vertically extended in the decking flanges (5),
- in the annular space (4) can with a kind of purge gas (8) relative to reaction compartment (3) tectonic overpressure,
Characterized in that, it is convex to be arranged at the cover plate with an a kind of labyrinth (9) of purge gas (8) loading
In an annular gap between edge (5) and the pipe fitting (7).
2. calorifics equipment according to claim 1, it is characterised in that the labyrinth (9) is arranged at the cover plate
In one cross section extension (10) of flange (5).
3. calorifics equipment according to claim 2, it is characterised in that the labyrinth (9) is formed as in the pipe fitting
(7) place has multiple seal clearances (11), open labyrinth.
4. calorifics equipment according to claim 2, it is characterised in that the labyrinth (9) is to be made of stainless steel
's.
5. the calorifics equipment according to claim 3 or 4, it is characterised in that the purging from the annular space (4) can be used
Gas (8) purges these seal clearances (11).
6. calorifics equipment according to claim 1 and 2, it is characterised in that the calorifics equipment is an air-flowing type gasification furnace
And the heat exchanger (2) is a cooling screen of the calorifics protection for the 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 |
|---|---|
| CN106701195A true CN106701195A (en) | 2017-05-24 |
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 Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620110038.9U Active CN205740907U (en) | 2015-11-13 | 2016-02-03 | Calorifics equipment with coaxial heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN205740907U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392190A (en) * | 2007-09-21 | 2009-03-25 | 西门子公司 | Entrained-flow gasifier with cooling screen and bellows compensator |
| US20090077885A1 (en) * | 2007-09-21 | 2009-03-26 | Siemens Aktiengesellschaft | Entrained-flow gasifier with cooling screen and sliding seal |
| CN101835879A (en) * | 2007-10-25 | 2010-09-15 | 西门子公司 | Flow gasifier with water jacket of cooling cowl and inside |
| 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
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392190A (en) * | 2007-09-21 | 2009-03-25 | 西门子公司 | Entrained-flow gasifier with cooling screen and bellows compensator |
| US20090077885A1 (en) * | 2007-09-21 | 2009-03-26 | Siemens Aktiengesellschaft | Entrained-flow gasifier with cooling screen and sliding seal |
| CN101835879A (en) * | 2007-10-25 | 2010-09-15 | 西门子公司 | Flow gasifier with water jacket of cooling cowl and inside |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 卜炎等: "《机械传动装置设计手册（下册）》", 30 April 1999, 机械工业出版社 * |
| 西安交通大学动力机械系压缩机教研室: "《活塞式压缩机》", 31 August 1972, 西安交通大学印刷厂 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205740907U (en) | 2016-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
| RJ01 | Rejection of invention patent application after publication |