CN207175879U - Gasification system - Google Patents
Gasification system Download PDFInfo
- Publication number
- CN207175879U CN207175879U CN201720671628.3U CN201720671628U CN207175879U CN 207175879 U CN207175879 U CN 207175879U CN 201720671628 U CN201720671628 U CN 201720671628U CN 207175879 U CN207175879 U CN 207175879U
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- China
- Prior art keywords
- synthesis gas
- unit
- blast pipe
- forecooler
- gasification system
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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
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
-
- 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
- C10J3/82—Gas withdrawal means
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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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
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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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0943—Coke
-
- 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
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
Abstract
The utility model provides a kind of gasification system for solid carbon charging of gasifying, and the gasification system includes：For partly aoxidizing carbon-containing feeding at the reaction temperatures to produce the gasification reactor of synthesis gas；It is arranged on the syngas outlet on gasification reactor top；The blast pipe generally upwardly extended from syngas outlet；The forecooler unit for being arranged in blast pipe or being connected thereto, it is used for precooling synthesis gas；Forecooler unit downstream connection to blast pipe connecting tube；With syngas cooler unit, it is used to receive synthesis gas from connecting tube and synthesis gas is cooled to below threshold temperature, to make synthesis gas be adapted to further processing.
Description
Technical field
This disclosure relates to a kind of gasification system by making carbon-containing feeding part burning next life production of synthetic gas.The disclosure also relates to
And the gasification process using the system.
Background technology
Carbon-containing feeding may for instance comprise coal dust, biomass, the solid carbon charging of petroleum coke or any other type or
Its mixture.Especially, carbon-containing feeding is provided in the form of solid dry feedstock.
Generally, carbon-containing feeding is supplied to the one of gasification reactor together with oxygen flow and (alternatively) moderator gas
Individual or multiple burners.In the reactor, charging is partially oxidized to provide synthesis gas.Synthesis gas is then in quenching Duan Zhongleng
But.The synthesis gas of cooling is typically processed, for example to remove ash content and other pollutants.
Synthesis gas or forming gas as used herein are to include hydrogen and the gas of carbon monoxide and some carbon dioxide
Body mixture.(through processing) synthesis gas can (such as) be used as fuel, or as intermediate product, or as other chemical processes
Raw material, the intermediate product are used to generate synthetic natural gas (SNG) or for producing ammonia, methanol, hydrogen, wax, the hydrocarbon fuel synthesized
Or oil product.
Synthesis gas can further be handled in downstream process path, to convert synthesis gas into selected hydrocarbon product.
Downstream process path can include fischer-tropsch reactor, to convert the synthesis gas and to make it possible to from a series of hydrocarbon products
(including but is not limited to methanol and wax) selected product of production.
Fischer-Tropsch process is usually directed to the series of chemical that can produce various hydrocarbon, and the hydrocarbon ideally has chemical formula
(CnH(2n+2)).Above all water gas shift reaction herein, it provides hydrogen source by consuming carbon monoxide：
H2O+CO→H2+CO2
Fischer-Tropsch process can produce such as alkane as the following formula：
(2n+1)H2+nCO→CnH(2n+2)+nH2O
N is generally in the range of 10 to 20 in formula.The formation of methane (n=1) is undesirable.Most of alkane of production
Straight chain is intended to, is suitable as diesel fuel.In addition to alkane is formed, competitive reaction can provide alkene, and alcohol
With other oxygen-containing hydrocarbons.
WO-2004/005438 discloses the gasification installation of description, the gasification installation include gasification reactor, connecting tube and
Syngas cooler.Gasification reactor includes the elongate pressure container being vertically oriented, cooling duct and quenching gas supply unit
In the elongate pressure container.Gasifier unit is supplied with carbon-containing feeding, such as coal dust.Quenching gas feed unit is fed with
It is quenched gas.The hot product gas being quenched flows in the cooling duct part in quenching gas feed unit downstream.Cooling duct
Provided with cooling surface.Preferably, these cooling surfaces are tube banks, and cooling water is flowed by restraining.Then, synthesis gas is directed into
Syngas cooler, the syngas cooler include three heat exchangers and heat surfaces, when being seen on the flow direction in hot gas
When examining, they one it is in place on the other side.
In WO-2004/005438 system, the flying dust that syngas cooler entrance can be sintered blocks, and this may lead
The performance of pressure drop and first heat exchanger beam of the cause on syngas cooler is bad.
In order to prevent the blocking of syngas cooler (SGC) entrance, hardware change (such as US9267744 has been had taken up
Disclosed in flying dust blaster) and operation optimization.
US4950308 discloses a kind of dress for being used to during high-pressure gasified produce generation gas from fine granularity carbonaceous material
Put.The device includes：Vertical gasification and radiation cooling device；Vertical convection current cooling duct, it is cold by the vertical convection current
But passage produces the flowing from top to bottom；And in the head of convection cooling device and gasification and the head of radiation cooling device
Connecting tube between portion.Gasification includes tubulose axle, bottom slag outlet and the upper cone for connecting tube with radiation cooling device
Shape connecting portion.The tubulose axle is configured to constant speed flow channel, and it is not equipped with being used to supply other types of cooling, but is set
Count into and solidified by the adjoint clinker for radiating cooling to be advanced together with product gas.
In practice, the solid in synthesis gas still can be deposited on the intake section of syngas cooler unit (it includes
The entrance of the first heat exchanger of topmost) on.The solid of deposition can grow and finally bridge into bulk.Once these blocks is big
It is small to exceed certain threshold value, just they can not be removed by blowback (i.e. reverse pressure pulse).This needs the behaviour of closing system
Make, to remove these flying dust blocks from first heat exchanger.
Utility model content
One purpose of the disclosure is to provide a kind of improved gasification system and method, is used to clear up or safeguard to limit
System downtime.
This application provides a kind of gasification system for solid carbon charging of gasifying, the gasification system includes：
- gasification reactor, the gasification reactor be used for partly aoxidize at the reaction temperatures the carbon-containing feeding so as to
Produce synthesis gas；
- syngas outlet, the syngas outlet are arranged on the top of the gasification reactor；
- blast pipe, the blast pipe upwardly extend substantially from the syngas outlet；
- forecooler unit, the forecooler unit are arranged in the blast pipe or are connected to blast pipe, for precooling institute
State synthesis gas；
- connecting tube, the connecting tube the forecooler unit downstream connection to the blast pipe；With
- syngas cooler unit, the syngas cooler unit are used to receive the synthesis gas from the connecting tube,
And for the synthesis gas to be cooled to below threshold temperature, to make the synthesis gas be adapted to further processing.
In one embodiment, the blast pipe is included in the row between the syngas outlet and the forecooler unit
Tracheae hypomere, the length of the blast pipe hypomere are enough for the synthesis gas to be cooled to the first temperature reduced relative to reaction temperature
Degree, at a first temperature of the reduction, the pollutant in the synthesis gas starts to solidify.
In another embodiment, the blast pipe is included between the forecooler unit and the entrance of the connecting tube
The blast pipe epimere of extension, the connecting tube have downward sensing.
In another embodiment, the blast pipe epimere extends beyond the entrance of the connecting tube.
The design of the disclosure enables the synthesis gas full of flying dust to flow upwards through the first cooler beam, and (it can be described as
Forecooler unit), it is rather than directly to the lower first heat exchanger for flowing into syngas cooler unit.Here, it is attached to precooling
The flying dust of device unit bottom can (such as) relatively easily removed by periodically tapping.Precooling is flowed through from top to bottom in synthesis gas
After device, temperature will be downward through syngas cooler unit and by the heat exchanger of synthesis gas cooling unit in the synthesis gas
Drop to before in " safe range ".
In one embodiment, syngas cooler unit can be provided with superheater heat exchanger.Here, superheated steam
Temperature can be ensured, without block all know the top heat exchanger bundles easily to go wrong.Therefore, the blocking quilt of heat exchanger
Reduce, the uptime between maintenance can be longer, so as to reduce overall operation expenditure.
In a beneficial embodiment, forecooler unit is provided with multiple heat exchange surfaces, each heat exchange surface tool
There is the lower end towards gasification reactor, the lower end and the lower end of adjacent heat exchange surface are staggered.
In one embodiment, the lower end of the heat exchange surface of forecooler unit is provided with the solid group for removing deposition
The knocking device of block.
According on the other hand, present disclose provides a kind of method for solid carbon charging of gasifying.
Brief description of the drawings
These and other features, aspect and the advantage of the disclosure will become aobvious from the detailed description below with reference to accompanying drawing
And be clear to, the identical character representation identical part in whole accompanying drawings, wherein：
Fig. 1 shows the profile of the gasification system of prior art；
Fig. 2 shows the profile of the gasification system of the disclosure；
Fig. 3 shows the profile of one embodiment of the gasification system of the disclosure；
Fig. 4 shows the profile of one embodiment of the forecooler unit of the disclosure；
Fig. 5 shows the perspective view of one embodiment of the forecooler unit of the disclosure；And
Fig. 6 shows the profile of the thin portion of one embodiment of the top section of syngas cooler unit.
Embodiment
This disclosure relates to a kind of system and method for gasification of carbonaceous charging.In a preferred embodiment, it is carbon containing enter
Material comprises at least dry pulverized coal.
Hereinafter, make similar feature is presented with like reference characters.
Fig. 1 schematically shows the gasification system 100 for producing synthesis gas with profile, and the wherein system is included extremely
A few gasification reactor 101, carbon raw material are partially oxidized in the gasification reactor and produce synthesis gas.
Gasification reactor 101 is generally arranged at the inside of pressure vessel or pressure vessel 110.In a preferred embodiment,
Gasification reactor 101 be cooled wall 112 (such as membrane wall) encirclement.Gasification reactor 101 is supplied with carbon-containing feeding, such as coal
Powder.
The top of reactor 101 includes syngas outlet 106.Syngas outlet is open to flue 107.Blast pipe 107
Suitable for hot product gas is booted up and is directed to connecting tube 103.For institute's production of synthetic gas acclivitous connecting tube or
Discharge section 103 is open to the top section of heat exchange unit 104, and institute's production of synthetic gas is cooled in the heat exchange unit.Quenching
There may also be in discharge section 103 for device (being typically water sprinkler).
Heat exchange unit 104 includes the cylindrical outer wall 2 of closing, and the cylindrical outer wall forms pressure vessel and big envelope at least one
Individual heat-exchange device 1.Heat exchange unit 104 can include pipe 3, the pipe (such as) form cylindrical inner channel wall.Heat exchange list
Member 104 can include the heat-exchange device of one or more series connection.Heat exchanger 1 (as shown in Figure 1) by be the series connection heat
The first heat exchanger of switch.
The delivery pipe 103 of gasifier unit is open to the entrance of flow channel 3.Synthesis gas flows in the direction of arrow A.Example
Such as, the top of heat exchange unit 104 is entered upwardly through discharge section 103, is arrived by flow channel 3 in the lower end of flow channel 3
The outlet at place.
For the more detailed description of exemplary gasification system, with reference to (such as) WO-2004/005438 or
US20140223823.The more detailed exemplary description of heat-exchange device 1 for example provides in US9267744.
It will be appreciated that Fig. 1 is schematic diagram.For the sake of clarity, many details are not shown, for example, burner, oxygen,
Fuel, clinker, the supply of cooling fluid and discharge pipe line, chilling apparatus etc..
Fig. 2 shows one embodiment of the gasification system 200 according to the disclosure.The gasification system includes gasifier
101 and single syngas cooler unit 2.Syngas cooler 2 can be provided with series connection (such as) three heat exchange lists
First 201A to 201C.The heat exchanger 201 of any suitable number can be used.
Blast pipe 207 upwardly extends substantially from the syngas outlet 106 of reactor 101.The row of being arranged on of forecooler unit 220
In tracheae 207 or it is connected on blast pipe 207.Here blast pipe 207 is long.Blast pipe 207 includes going out between synthesis gas
Hypomere 222 between mouth 106 and forecooler 220, the hypomere are suitable with the blast pipe 107 of Fig. 1 embodiment in length.Exhaust
The epimere 224 of pipe extends between forecooler and the entrance of downwardly directed connecting tube 203.
The epimere 224 of blast pipe is connected to the connecting tube 203 tilted down by first connecting portion 230 with acute angle.Second connects
The opposed end of connecting tube 203 is connected to syngas cooler pipe 3 by socket part 232.Preferably, connecting portion 232 is provided with smooth
And the wall of cavetto, substantially free from interruption.Therefore, connecting portion 232 is provided from connecting tube 203 to syngas cooler 2 for synthesis gas
Seamlessly transit.In a preferred embodiment, connecting portion 232 is into obtuse angle.
Cooler tube 3 may extend through at least one heat-exchange device 201.In another embodiment, cool down
Each section of device pipe 3 can interconnect follow-up heat exchanger 201.Alternatively, at least one heat exchanger 201 can be arranged
In the inside of cooler tube 3.
In the system of the disclosure, the overall height H 1 of gasification reactor section generally can be substantially equal to or be gas-cooled less than synthesis
But the overall height H 2 of device unit 2.The limited height of syngas cooler also allows for limiting the height of whole system.Forecooler
220 make it possible to reduce the total height of gasification system 200 and/or reduce the height H2 of syngas cooler.
Fig. 3 is shown according to gasification system 300 of the present utility model.Herein, the syngas outlet of gasification reactor 101
106 are provided with chilling apparatus 240.Chilling apparatus can include quenching ring or multiple quenching nozzles, for cooling fluid to be sprayed
Or it is fed to the synthesis gas at or near outlet 106.(such as) describe in US4859213 and US9234147 it is suitable
It is quenched ring.In addition, the height H1 of gasification reactor section is approximately equal to the height H2 of syngas cooler unit 2.
Fig. 4 shows one embodiment of forecooler heat-exchange device 220.Heat exchanger 220 can be arranged in blast pipe
207 inside is connected to blast pipe 207.The blast pipe has central axis R as shown.The wall of blast pipe 207 can
So that including parallel cooling liquid pipe, cooling liquid pipe can be interconnected to form airtight tubulose membrane wall.The cooling of such as water
Medium can flow through the pipe of membrane wall, to provide the cooling wall of blast pipe 207.
The syngas outlet 106 of gasification reactor 101 is open to the entrance of flow channel 207.Synthesis gas is along arrow A's
Direction (referring further to Fig. 1) flows upwardly into blast pipe 207 and by forecooler unit 220 from syngas outlet 106.
In one embodiment, the membrane wall of blast pipe 207 surrounds forecooler 220.Forecooler 220 include one group it is nested
Coaxial heat exchange surface 5a~5e.The described group of heat exchange surface that can include any suitable number.In an exemplary implementation
In example, described group includes four to six nested heat exchange surfaces, such as five surfaces 5a, 5b, 5c, 5d and 5e.In practice,
Two or more heat exchange surfaces, such as heat exchange surface 5a and 5b can be used.
Heat exchange surface 5a to 5e can include the pipe for cooling fluid, to form corresponding membrane wall.Therefore, one
Individual or multiple heat exchange surface 5a~5e may include corresponding membrane wall, and the membrane wall can be by cold in the pipe of the membrane wall
But fluid stream cools down.For example, the pipe or pipeline of heat exchange surface 5a to 5e membrane wall can (such as) in a spiral form or
It is arranged parallel to each other.
Heat exchange surface 5a to 5e membrane wall provides the flow path for cooling fluid.Cooling fluid can be via one
Individual or multiple cooling agent supply lines 11 are supplied, and cooling agent supply line can divide via one or more manifolds or distributor 12
From into single cooling agent supply line 13.Supply line 13 can be with the membrane wall for corresponding heat exchange surface 5a~5e
The pipe fluid connection of cooling fluid.Heat-exchange device 220 can include separated cryogen discharge pipeline 14, and it can be via one
Individual or multiple manifolds or collector 15 are combined into the cryogen discharge pipeline 16 of one or more combinations.The flow direction of cooling fluid
And the arrangement of supply line and discharge pipe line (as shown in Figure 4) can also overturn.
Supporting construction 20 can be set to support heat exchange surface 5a to 5e.Supporting construction can have any suitable
Form.A kind of example of supporting construction is disclosed in WO2011/003889.Supporting construction can include what is extended radially outwardly
Three, four or more support arms.Support arm can be attached to (such as) wall of blast pipe 207.
Most interior heat exchange surface 5e can be provided with the shutoff valve that can be moved between open and closed positions
17.Shutoff valve 17 can open or close the flow path for synthesis gas, be enable to adjust the flowing of synthesis gas.
In a preferred embodiment, each heat exchange surface 5b~5e lower end respectively extends beyond adjacent outside heat
The lower end of exchange surface.So, each individually heat exchange surface can be cleared up individually, such as by using Rapper device
250a~250d (shown in Fig. 5) mechanism is cleared up.Rapper device 250 can (such as) periodically to heat exchange table
The lower end in face provides mechanical pulsing, can so discharge dust and/or ash deposited thereon.From the dirt of heat exchange surface release
The agglomerate of soil and/or ash can decline due to gravity and by blast pipe 207 and enter gasification reactor 101.
Fig. 6 shows connecting portion 232, and it provides seamlessly transitting from connecting tube 203 to the pipe 3 of syngas cooler 2.Even
Socket part 232 provides smooth flow path.Flow path at connecting portion is generally without barrier, to limit the heavy of solid
Product.Connecting tube tilts down.Connecting portion 232 provides smooth curve.The internal diameter of connecting tube 203 is essentially equal to the upper end of pipe 3
Internal diameter.
In use, carbon-containing feeding gasifies in reactor 101, produces reaction product (being usually synthesis gas).Produce conjunction
Generally moved upwards into gas, reactor is left by outlet 106.Unburned solid (such as clinker) in reaction product can be downward
Fall into water-bath.A part for unburned solid including flying dust can be moved upwards with synthesis gas.
Alternatively, outlet can be provided with quenching ring, and gas is sprayed into will pass through to spray cooling fluid or will be quenched liquid
Carry out precooling hot product gas.Generally, water is sprayed into synthesis gas.
Synthesis gas moves upward to forecooler heat exchanger 220 by pipe 207.Forecooler heat exchanger is by synthesis gas precooling
But to predetermined low temperature.Thermograde between forecooler heat exchanger may be at about 200 to 600 DEG C of magnitude.
The flying dust and a part for other solids that may be included in synthesis gas can be deposited on forecooler heat exchanger 220
On heat exchange surface.Compared with the temperature of the synthesis gas of the porch of the first heat exchanger 201A in syngas cooler,
The temperature of synthesis gas at forecooler heat exchanger 220 is higher.As a result, the dust and ash being deposited in block are handed in forecooler heat
Quickly carried out at parallel operation.But it is different from heat exchanger 201A, forecooler heat exchanger is provided with cleaning plant, such as Fig. 5
Shown knocker.The cleaning plant regularly operates, so that what is deposited from the release of the heat-exchanger surface of forecooler 220 consolidates
Body block.The solid of release is fallen back into due to gravity in reactor 101, and in the reactor, solid will be burned or enter one
Step drops downward into water-bath.
After being cooled down by forecooler 220, synthesis gas continues up, and turns into pipe 203.In a preferred embodiment (Fig. 3)
In, pipe 224 extends upwardly beyond the entrance of connecting tube 203.Due to the density variation between solid and synthesis gas, in forecooler
A part of solid remained on after 220 in synthesis gas will be continued up due to Coriolis force more than the entrance,
And lighter synthesis gas will enter connecting tube.These solids finally will be fallen into forecooler, and are further returned in reactor.
Therefore, it might even be possible to more solids are removed from synthesis gas, prevents these solids from entering syngas cooler 2 and is blocked in conjunction
Into the heat exchanger 201 in Gas Cooler 2.
By the connecting tube 203 tilted down, synthesis gas will move to synthesis air cooling via smooth connecting portion 232 now
But device 2 and by one or more heat exchangers 201, to be cooled further to predetermined low temperature.
Using the system of the disclosure, by installing forecooler heat exchanger (such as a branch of circle in the outlet of gasifier
Cylinder) and significantly increase cooling effect.Forecooler can be arranged in the top of outlet.Forecooler heat exchanger can be arranged in
The top of outlet.Forecooler can be arranged in initial spray and be quenched after section.
In one embodiment, forecooler 220 is arranged in the top of outlet 207.Therefore, synthesis gas (such as) due to
Water sprinkler is quenched and/or has obtained some coolings due to the distance through pipe 207.Due to the temperature of reduction, in synthesis gas
Fly ash granule be cured.In addition, hot synthesis gas have mixed well with relatively cool quenching gas (such as vapor).
Connecting tube 203 will be installed downwards, be directly connected to syngas cooler 2.By this change, in connecting tube
And/or can be reduced in the amount for leading to the protectiveness refractory material at or near the connecting portion 232 of syngas cooler, in pipe
Some positions can even exempt.Compared with the design of prior art, cooling will be enhanced.
Forecooler design can be prevented in such as fouling because of solid of the porch of syngas cooler heat exchanger 201.In advance
The bottom of cooler heat exchanger can (such as) relatively easily cleared up by knocker.When needed, knocker can be from precooling
The entrance (being typically bottom) of device heat exchanger removes flying dust.Benefit is that the percussion at forecooler heat exchanger will be than closing
It is more effective at into Gas Cooler heat exchanger, because flying dust will easily be fallen.
The total height of system can be significantly reduced using the system of the disclosure.For example, water cooling, reactor, outlet and forecooler
The total height of heat exchanger can be substantially less than the height of the prior art systems shown in Fig. 1.The total height of the latter may be at 40
The magnitude of rice.System of the present utility model can have the height reduced, and it lower than the system of prior art about 10% to 30%.
The height of reduction helps to reduce cost, saves equipment and material.It can also be easier maintenance.
The embodiment that the disclosure is not limited to the described above, wherein within the scope of the appended claims it is contemplated that many changes
Type.The feature of each embodiment can (such as) combine.
Claims (13)
1. a kind of be used for the gasification system that solid carbon is fed that gasifies, it is characterised in that the gasification system includes：
- gasification reactor, the gasification reactor are used to partly aoxidize the carbon-containing feeding at the reaction temperatures to produce
Synthesis gas；
- syngas outlet, the syngas outlet are arranged on the top of the gasification reactor；
- blast pipe, the blast pipe upwardly extend substantially from the syngas outlet；
- forecooler unit, the forecooler unit are arranged in the blast pipe or are connected to blast pipe, for conjunction described in precooling
Into gas；
- connecting tube, the connecting tube the forecooler unit downstream connection to the blast pipe；With
- syngas cooler unit, the syngas cooler unit are used to receive the synthesis gas from the connecting tube, are used in combination
It is cooled in by the synthesis gas below threshold temperature, to make the synthesis gas be adapted to further processing.
2. gasification system as claimed in claim 1, it is characterised in that the blast pipe is included in the syngas outlet and institute
State the blast pipe hypomere between forecooler unit, the length of the blast pipe hypomere be enough by the synthesis gas be cooled to relative to
The first temperature that reaction temperature reduces, at a first temperature of the reduction, the pollutant in the synthesis gas starts to solidify.
3. gasification system as claimed in claim 1, it is characterised in that the blast pipe is included in the forecooler unit and institute
The blast pipe epimere extended between the entrance of connecting tube is stated, the connecting tube has downward sensing.
4. gasification system as claimed in claim 3, it is characterised in that the blast pipe epimere extends beyond the connecting tube
Entrance.
5. gasification system as claimed in claim 4, it is characterised in that first connecting portion by the blast pipe epimere at an acute anglely
There is downwardly directed connecting tube described in being connected to.
6. gasification system as claimed in claim 1, it is characterised in that the connecting tube is connected to synthesis gas by second connecting portion
Cooler tube, the second connecting portion are provided with smooth wall.
7. gasification system as claimed in claim 1, it is characterised in that the gasification system goes out including being arranged in the synthesis gas
Quenching unit between mouth and the heat exchanger of the forecooler unit, quenching is provided for the synthesis gas into the blast pipe
Fluid or quenching liquid.
8. gasification system as claimed in claim 7, it is characterised in that the quenching unit is suitable to water spraying into the synthesis
Gas.
A series of 9. gasification system as claimed in claim 1, it is characterised in that the syngas cooler unit is provided with heat
Crosspoint.
10. gasification system as claimed in claim 9, it is characterised in that the syngas cooler unit includes three heat and handed over
Change unit.
11. gasification system as claimed in claim 1, it is characterised in that total height (H1) of the gasification reactor part etc.
In or less than the syngas cooler unit total height (H2).
12. gasification system as claimed in claim 1, it is characterised in that the forecooler unit includes multiple heat exchange surfaces,
Each heat exchange surface has wrong towards the lower end of the gasification reactor, the lower end and the lower end of adjacent heat exchange surface
Open.
13. gasification system as claimed in claim 12, it is characterised in that the lower end of the heat exchange surface of the forecooler unit
It is provided with the knocking device for removing deposited solid mass.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNPCT/CN2016/085427 | 2016-06-12 | ||
| CN2016085427 | 2016-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207175879U true CN207175879U (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720671628.3U Active CN207175879U (en) | 2016-06-12 | 2017-06-09 | Gasification system |
| CN201710430390.XA Pending CN107488469A (en) | 2016-06-12 | 2017-06-09 | Gasification system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710430390.XA Pending CN107488469A (en) | 2016-06-12 | 2017-06-09 | Gasification system |
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| US4859214A (en) * | 1988-06-30 | 1989-08-22 | Shell Oil Company | Process for treating syngas using a gas reversing chamber |
| US20060076272A1 (en) * | 2002-07-02 | 2006-04-13 | Stil Jacob H | Method for gasification of a solid carbonaceous feed and a reactor for use in such a method |
| CN101432400B (en) * | 2006-05-01 | 2012-11-14 | 国际壳牌研究有限公司 | Gasification reactor and its use |
| AU2011298482B2 (en) * | 2010-08-30 | 2014-09-18 | Air Products And Chemicals, Inc. | Gasification reactor |
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