CN107099338A - Pulverized coal conveying device, coal gasification system and its fine coal carrying method - Google Patents
Pulverized coal conveying device, coal gasification system and its fine coal carrying method Download PDFInfo
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- CN107099338A CN107099338A CN201710322111.8A CN201710322111A CN107099338A CN 107099338 A CN107099338 A CN 107099338A CN 201710322111 A CN201710322111 A CN 201710322111A CN 107099338 A CN107099338 A CN 107099338A
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- Prior art keywords
- pressure
- lock hopper
- gas
- pressure release
- separator
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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
- C10J3/50—Fuel charging devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
-
- 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
-
- 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
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention provides a kind of pulverized coal conveying device, coal gasification system and its fine coal carrying method.The device includes：Lock hopper, separator and heat riser；Wherein, the pressure relief opening of lock hopper is connected with the material inlet of separator, and separator is used to receive the first pressure release gas in lock hopper, and isolates fine coal from the first pressure release gas；The solid outlet of separator is connected with the feedback outlet of lock hopper, and solid outlet is used to the fine coal isolated being delivered to lock hopper；The gas vent of separator is connected with the entrance of heat riser, and heat riser is used to receive the first pressure release gas after separation, and the first pressure release gas is heated up；The outlet of heat riser is used to export the first pressure release gas after heating.The present invention enables to the first pressure release gas to keep certain temperature, it is therefore prevented that the first pressure release gas causes to condense because pressure drop produces low temperature blocks pipeline, it is ensured that the normal operation of fine coal conveying.
Description
Technical field
The present invention relates to pressurized delivered technical field, in particular to a kind of pulverized coal conveying device, coal gasification system
And its fine coal carrying method.
Background technology
With the increasingly scarcity of petroleum and natural gas resource, the utilization that cleans of coal is increasingly valued by people,
Develop the key that large-scale Coal Gasification Technology is clean utilization coal resources.Among large-scale Coal Gasification Technology, air-flow bed coal-gasification
Technology gets most of the attention.Wherein, air flow bed is powdered coal pressuring gasified because coal adaptability is wide, has obtained wide the advantages of high conversion rate
General application.
Fine coal pressurized delivered is the core technology of fine coal gasification process, the most key, and whether fine coal charging stablizes, and enters
The stability of material directly influences gasification efficiency and system safety.At present, the flow of fine coal pressurized delivered technique is：From coal-grinding
And the fine coal of drying section is boosted with carrier gas in pressurization lock hopper, fine coal is transported to high pressure workshop section after boosting is finished,
Lock hopper of pressurizeing carries out pressure discharge operations, then the carrier gas pressurizeed in lock hopper is carried out in low pressure sack cleaner, to the powder carried in carrier gas
Coal is filtered, and the fine coal after filtering is delivered in pressurization lock hopper again by low pressure storage tank, is so circulated.But, plus
Press lock hopper in pressure leak process, high pressure carrier gas can be discharged, because carrier gas is carbon dioxide, so carrier gas can be because of strong throttling effect
Stronger temperature drop should be caused, causes carbon dioxide and fine coal to occur the phenomenon that decompression condenses in course of conveying, easily blocks defeated
Pipeline is sent, and then influences fine coal conveying.
The content of the invention
In consideration of it, the present invention proposes a kind of pulverized coal conveying device, it is intended to solve pressurization lock hopper of the prior art and letting out
Decompression condensation, which easily occurs, in carrier gas during pressure causes the problem of conveyance conduit is blocked.The invention also provides a kind of coal gasification system
A kind of system, it is also proposed that fine coal carrying method.
On one side, the present invention proposes a kind of pulverized coal conveying device, and the device includes：Lock hopper, separator and heating dress
Put；Wherein, the pressure relief opening of lock hopper is connected with the material inlet of separator, and separator is used to receive the first pressure release in lock hopper
Gas, and isolate fine coal from the first pressure release gas；The solid outlet of separator is connected with the feedback outlet of lock hopper, and solid outlet is used
In the fine coal isolated is delivered into lock hopper；The gas vent of separator is connected with the entrance of heat riser, and heat riser is used
The first pressure release gas after reception separation, and the first pressure release gas is heated up；The outlet of heat riser is used to export after heating
The first pressure release gas.
Further, in above-mentioned pulverized coal conveying device, heat riser is blender；Wherein, the first entrance of blender is led to
Cross the first pipeline with the gas vent of separator to be connected, the first entrance of blender is used to receive the first pressure release gas；Blender
Second entrance be used to receive the first supplement gas with preset temperature, the outlet of blender is used for the first pressure release gas and first
Supplement the mixed gaseous mixture output of gas.
Further, above-mentioned pulverized coal conveying device also includes：Second pipe；Wherein, separator is used to receive in lock hopper
Second pressure release gas, and isolate fine coal from the second pressure release gas；Second pipe is connected with the first pipeline, and second pipe is used to connect
Receive and export the second pressure release gas.
Further, in above-mentioned pulverized coal conveying device, separator is placed in the top of lock hopper.
Further, in above-mentioned pulverized coal conveying device, the solid outlet of separator passes through tremie pipe and the feedback outlet of lock hopper
It is connected；The side wall of tremie pipe offers air inlet, and air inlet is used for the input into tremie pipe and drives the fine coal in tremie pipe to return
It is back to the gas in lock hopper.
Further, above-mentioned pulverized coal conveying device also includes：First bypass duct, the first valve and the second valve；Wherein,
The pressure relief opening of lock hopper is connected by the first valve with the material inlet of separator；The pressure relief opening of lock hopper also passes sequentially through the second valve
Door, the first bypass duct are connected with the first pipeline, by the pipeline and the second valve and first where the first valve and separator
Pipeline where the pipeline of road is parallel pipeline.
Further, above-mentioned pulverized coal conveying device also includes：Pressure regulator；Wherein, the pressure regulation of the opening and lock hopper of pressure regulator
Mouth is connected, and pressure regulator is used to adjust the pressure in lock hopper.
Further, in above-mentioned pulverized coal conveying device, pressure regulator includes：Housing；Wherein, housing offer the first opening and
Second opening, the first opening is connected with the pressure modulating opening of lock hopper；First is open for when lock hopper pressure is more than preset pressure, connecing
Receive the pressurization gas in lock hopper；Second is open for pressurization gas to be exported；Second opening is additionally operable to be less than default pressure in lock hopper pressure
During power, receive second and supplement gas；First opening is also delivered in lock hopper with by the second supplement gas.
Further, in above-mentioned pulverized coal conveying device, pressure regulator also includes：Filtering bodies；Wherein, filtering bodies are connected to housing
Inwall.
Further, above-mentioned pulverized coal conveying device also includes：Second bypass duct, the 3rd valve and the 4th valve；Wherein,
The pressure modulating opening of lock hopper passes through the 3rd valve and the opening in communication of pressure regulator；The pressure modulating opening of lock hopper by the 4th valve and second by
Road pipeline is connected, and the pipeline where pipeline and the 4th valve and the second bypass duct where the 3rd valve and pressure regulator is simultaneously
Union road.
In the present invention, fine coal is isolated from the first pressure release gas by separator, the first pressure release gas is delivered to heat riser
It is middle to be heated up so that the first pressure release gas can keep certain temperature, it is therefore prevented that the first pressure release gas is led because pressure drop produces low temperature
Cause to condense and block pipeline, it is ensured that the normal operation of fine coal conveying, solve pressurization lock hopper of the prior art in pressure leak process
Decompression condensation, which easily occurs, in middle carrier gas causes the problem of conveyance conduit is blocked.
On the other hand, the invention also provides a kind of coal gasification system, the system includes：Above-mentioned fine coal pressurized delivered
Device.
Because pulverized coal conveying device has the effect above, so the coal gasification system with the pulverized coal conveying device also has
There is corresponding technique effect.
Another further aspect, the invention also provides a kind of fine coal carrying method, this method comprises the following steps：Separating step,
Pressure release gas in lock hopper is delivered in separator, separator is separated the fine coal that pressure release gas and pressure release gas are carried；Heating
The pressure release gas isolated is delivered in heat riser and heated up by step, separator；Step is exported, after heat riser will heat up
Pressure release gas output
Further, in above-mentioned fine coal carrying method, in heating step, heat riser is blender, defeated into blender
Enter the supplement gas with preset temperature, and supplement gas is mixed with pressure release gas.
Further, in above-mentioned fine coal carrying method, in separating step, the fine coal isolated is delivered to lock by separator
Bucket.
In the present invention, fine coal is isolated from pressure release gas by separator, pressure release gas is heated up in heat riser, made
Certain temperature can be kept by obtaining pressure release gas, it is therefore prevented that pressure release gas causes to condense because pressure drop produces low temperature blocks pipeline, it is ensured that
The normal operation of fine coal conveying.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 provides the structural representation of pulverized coal conveying device for the embodiment of the present invention；
Fig. 2 provides the another structural representation of pulverized coal conveying device for the embodiment of the present invention；
Fig. 3 provides the flow chart of fine coal carrying method for the embodiment of the present invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.It should be noted that in the case where not conflicting, embodiment in the present invention and
Feature in embodiment can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Pulverized coal conveying device
Referring to Fig. 1, Fig. 1 provides the structural representation of pulverized coal conveying device for the embodiment of the present invention.As illustrated, fine coal is defeated
Device is sent to include：Lock hopper 1, separator 2, blender 4 and heat riser 16.Wherein, separator 2 offers material inlet 21 and solid
Body outlet 23.The pressure relief opening 110 of lock hopper 1 is connected with the material inlet 21 of separator 2, and separator 2 is used to receive in lock hopper 1
First pressure release gas, and isolate fine coal from the first pressure release gas.The solid outlet 23 of separator 2 and the phase of feedback outlet 120 of lock hopper 1
Connection, solid outlet 23 is used to the fine coal isolated being delivered in lock hopper 1.Specifically, the solid outlet 23 of separator 2 can be with
It is opened in the bottom of separator 2 (for Fig. 1).Separator 2 can be cyclone separator, or others separation
Device, the present embodiment is not intended to be limited in any to this.
Separator 2 is further opened with gas vent 22, the gas vent 22 of separator 2 and the phase of entrance 161 of heat riser 16
Connection, heat riser 16, which is used to receive, isolates the first pressure release gas after fine coal, and the first pressure release gas is heated up, so that the
One pressure release gas reaches preset temperature, and the outlet 162 of heat riser 16 is used to export the first pressure release gas after heating.Specific implementation
When, heat riser 16 can be heater, it is of course also possible to be other devices, as long as can carry out the first pressure release gas
Heating, the present embodiment does not do any limitation to this.
It should be noted that it should be appreciated by those skilled in the art that lock hopper 1 offers pressurization gas input port 150, fine coal enters
Material mouth 130 and fine coal discharging opening 140, fine coal are delivered in lock hopper 1 by fine coal charging aperture 130, and pressurization gas is by pressurization gas input port
150 are delivered in lock hopper 1, wherein, pressurization gas has default pressed temperature and preset pressure.In lock hopper 1, pressurization gas is to fine coal
Pressurizeed so that the pressure rise of fine coal.When fine coal is forced into preset pressure, by the fine coal after pressurization by fine coal discharging opening
140 export to follow-up system.Lock hopper 1 is further opened with pressure relief opening 110 and feedback outlet 120, after the fine coal output lock hopper 1 after pressurization,
Pressurization gas in lock hopper 1 is pressure release gas, and pressure release gas is exported by pressure relief opening 110.Pressure release gas is often taken during output
With fine coal, it is back to again by feedback outlet 120 in lock hopper 1 after fine coal is isolated in pressure release gas.
It should be appreciated by those skilled in the art that pipeline should be connected with the fine coal discharging opening 140 of lock hopper 1.Can be with pipeline
Baiting valve is provided with, when lock hopper 1 is pressurizeed, baiting valve is closed.Baiting valve can also be not provided with pipeline, then lock hopper 1 exists
In boost process, follow-up system also boosts therewith, to maintain the pressure in lock hopper 1.
The course of work is：Fine coal is delivered in lock hopper 1 by fine coal charging aperture 130, when the fine coal in lock hopper 1 reaches specified material
During position, stop adding fine coal.Pressurization gas with default pressed temperature and preset pressure is delivered to lock by pressurization gas input port 150
In bucket 1.In lock hopper 1, pressurization gas pressurizes to fine coal so that the pressure rise of fine coal.When fine coal is forced into preset pressure
When, the fine coal after pressurization is exported by fine coal discharging opening 140.Pressurization gas in lock hopper 1 is pressure release gas, because lock hopper 1 will add
After fine coal output after pressure, the pressure in lock hopper 1 is higher, so, the higher pressure release gas of pressure in lock hopper 1 is designated as the first pressure release
Gas.First pressure release gas is exported into separator 2 by pressure relief opening 110, what 2 pair of first pressure release gas of separator and the first pressure release gas were carried
Fine coal is separated, and the fine coal isolated is delivered in lock hopper 1 by the solid outlet 23 of separator 2, to be carried out to fine coal
Later use.The the first pressure release gas isolated is exported to heat riser 16,16 pairs of heat riser by the gas vent 22 of separator 2
First pressure release gas is heated up, so that the first pressure release gas reaches preset temperature.Then, it is up to the first pressure release gas of preset temperature
Exported by the outlet 162 of heat riser 16.When it is implemented, can be recycled to the first pressure release gas after heating.
When it is implemented, pressurization gas can be carbon dioxide, it is of course also possible to be other inert gases, the present embodiment
Any limitation is not done to this.Pressurize gas default pressed temperature and preset pressure can be determined according to actual conditions, this implementation
Example is not intended to be limited in any to this.In the present embodiment, pressurization gas is carbon dioxide, and the temperature of pressurization gas is 100 DEG C~140 DEG C,
Pressure is 8.1MPa~8.5MPa.It is preferred that, the temperature of pressurization gas is 100 DEG C, and pressure is 8.2MPa.It is pre- that fine coal pressurization reaches
If pressure can determine that the present embodiment does not do any limitation to this according to actual conditions.
As can be seen that in the present embodiment, fine coal is isolated from the first pressure release gas by separator 2, the first pressure release gas is defeated
Deliver to and heated up in heat riser 16 so that the first pressure release gas can keep certain temperature, it is therefore prevented that the first pressure release gas because
Pressure drop, which produces low temperature, to be caused to condense blocking pipeline, it is ensured that the normal operation of fine coal conveying, solves pressurization of the prior art
Decompression condensation, which easily occurs, in lock hopper carrier gas in pressure leak process causes the problem of conveyance conduit is blocked.
Referring to Fig. 2, Fig. 2 provides the another structural representation of pulverized coal conveying device for the embodiment of the present invention.Above-described embodiment
In, heat riser 16 can be blender 4, and the first entrance 41 of blender 4 is gone out by the gas of the first pipeline 5 and separator 2
Mouth 22 is connected, and the first entrance 41 of blender 4 is used to receive the first pressure release gas.The second entrance 42 of blender 4 is used to receive
The first supplement gas with preset temperature.Blender 4 is used to be mixed in the first pressure release gas and the first supplement gas, forms mixing
Gas, so that the temperature of gaseous mixture reaches preset temperature.The outlet 43 of blender 4 is used to mix the first pressure release gas with the first supplement gas
Gaseous mixture output after conjunction.Specifically, the gas vent 22 of separator 2 is used to that the first clean pressure release after fine coal will to be isolated
Gas is delivered to the first pipeline 5, and the first pressure release gas is delivered in blender 4 by the first pipeline 5 again.When it is implemented, the first supplement
The preset temperature of gas can determine that such as preset temperature is more than 100 DEG C, and the present embodiment does not do any limit to this according to actual conditions
System.The tolerance of first supplement gas is determined according to the tolerance of the first pressure release gas, and preset temperature is reached with the temperature for ensureing gaseous mixture,
In the present embodiment, it is ensured that the temperature of gaseous mixture reaches more than 80 DEG C.
When it is implemented, first supplement gas can be carbon dioxide, or other gases, the present embodiment to this not
Do any limitation.In the present embodiment, because pressurization gas is carbon dioxide, so, the first pressure release gas is carbon dioxide, and first mends
Inflation is also carbon dioxide, is effectively guaranteed the purity of carbon dioxide, is easy to recycle.
As can be seen that in the present embodiment, heat riser 16 is blender 4, by blender 4 by the first pressure release gas with
The first supplement gas with preset temperature is mixed, and the temperature of the first supplement gas passes to the first pressure release gas so that first mends
Inflation and the first mixed gaseous mixture of pressure release gas can reach preset temperature, prevent the first pressure release gas from being led because pressure drop produces low temperature
Cause to condense the phenomenon for blocking pipeline, it is ensured that the normal operation of fine coal conveying.
With continued reference to Fig. 2, in the various embodiments described above, the pulverized coal conveying device can also include：Second pipe 6.Wherein, divide
It is used to receive the second pressure release gas in lock hopper 1 from device 2, and fine coal is isolated from the second pressure release gas.Second pipe 6 and first is managed
Road 5 is connected, and second pipe 6 is used to receive and export the second pressure release gas.Specifically, with lock hopper 1 continuous output pressure compared with
Pressure in the first high pressure release gas, lock hopper 1 is gradually reduced, then the pressure of pressure release gas is relatively low in lock hopper 1, is let out pressure is relatively low
Calm the anger and be designated as the second pressure release gas, the second pressure release gas is delivered in separator 2 by lock hopper 1.One end of second pipe 6 is (shown in Fig. 2
Right-hand member) it is connected with the first pipeline 5, the other end (left end shown in Fig. 2) of second pipe 6 is used for clean by what is isolated
Second pressure release gas is exported.When it is implemented, the second pressure release gas can be delivered in follow-up system by second pipe 6, reclaimed
Utilize.
Valve can be provided with second pipe 6, the valve is used for the break-make for controlling second pipe 6.First pipeline 5 with
The connectivity part of second pipe 6 and it is placed in after second pipe 6 and can be provided with valve, the valve is used to control the first pipeline 5 to exist
The break-make of part after second pipe 6, so as to better assure that the second pressure release gas is delivered in second pipe 6, first lets out
Calm the anger and be delivered in the first pipeline 5.Because the pressure of the second pressure release gas is relatively low, so without setting heating dress on second pipe 6
Put, also with regard to without carrying out mending temperature to the second pressure release gas.
When it is implemented, the pressure of the first pressure release gas can be able to be for the gas higher than more than 4MPa, the second pressure release gas
Gas less than 4MPa.
As can be seen that in the present embodiment, by setting second pipe 6, enabling to the first pressure release gas and the second pressure release gas
Conveyed respectively by different pipelines, also, the pressure of the second pressure release gas is relatively low, and, can be directly defeated without carrying out mending temperature
Deliver in follow-up system, save the consumption of the energy.
With continued reference to Fig. 2, present embodiment illustrates the mode that a kind of fine coal is delivered to lock hopper.Separator 2 is placed in lock hopper 1
Top (for Fig. 2), so, the fine coal that separator 2 is isolated can be back in lock hopper 1 under gravity,
It is simple and convenient, it is easy to operate, without using other actuating units, save the energy.When it is implemented, separator 2 can be put
In the surface of lock hopper 1, the oblique upper of lock hopper 1 can also be placed in, as long as enabling to the fine coal isolated in separator 2 in weight
It is back under power effect in lock hopper 1, the present embodiment is not intended to be limited in any to this.It is preferred that, the solid outlet 23 of separator 2
The axis of axis and the feedback outlet 120 of lock hopper 1 coincide, that is to say, that the solid outlet 23 of separator 2 is just placed in lock hopper
The surface of 1 feedback outlet 120 (for Fig. 2) so that fine coal is preferably delivered in lock hopper 1.
With continued reference to Fig. 2, present embodiment illustrates the mode that another fine coal is delivered to lock hopper.The solid of separator 2
Outlet 23 is connected by tremie pipe 3 with the feedback outlet 120 of lock hopper 1, and specifically, the first end of tremie pipe 3 is (upper shown in Fig. 2
End) it is connected with the solid outlet 23 of separator 2, the second end (lower end shown in Fig. 2) of tremie pipe 3 and the feedback outlet of lock hopper 1
120 are connected.
The side wall of tremie pipe 3 offers air inlet 31, and air inlet 31 is used for the input into tremie pipe 3 and driven in tremie pipe 3
Fine coal be back to gas in lock hopper 1, that is to say, that air inlet 31 is used to input gas into tremie pipe 3, and the gas is used for
The fine coal in tremie pipe 3 is driven to be back in lock hopper 1.It is preferred that, air inlet 31 is set close to the feedback outlet 120 of lock hopper 1.
When it is implemented, the gas that air inlet 31 is inputted can be carbon dioxide, or other gases, this implementation
Example is not intended to be limited in any to this.In the present embodiment, because pressurization gas is carbon dioxide, in order to keep the purity of carbon dioxide,
So the gas is also carbon dioxide.The gas has preset temperature and preset pressure, when it is implemented, the preset temperature and pre-
If pressure can determine that the present embodiment is not intended to be limited in any to this according to actual conditions.In the present embodiment, the temperature of the gas
Spend for 100 DEG C~140 DEG C, pressure is 8.1MPa~8.5MPa.It is preferred that, the temperature of the gas is 100 DEG C, and pressure is
8.2MPa。
As can be seen that in the present embodiment, by conveying gas into tremie pipe 3, so, gas can drive tremie pipe 3
In fine coal be back in lock hopper 1, it is to avoid fine coal compacting causes the blocking of pipeline, accelerates the speed of fine coal backflow, simply
It is convenient.
With continued reference to Fig. 2, present embodiment illustrates the mode that another fine coal is delivered to lock hopper.Separator 2 is placed in lock
The top of bucket 1, also, the side wall of tremie pipe 3 offers air inlet 31, and air inlet 31 is used for into tremie pipe 3 under input drive
Fine coal in expects pipe 3 is back to the gas in lock hopper 1.So, the fine coal in separator 2 and tremie pipe 3 is in gravity and strength
It is back under double action in lock hopper 1, accelerates the speed of fine coal backflow, efficiently avoid fine coal compacting causes the stifled of pipeline
Plug, it is ensured that the normal reflow of fine coal.
With continued reference to Fig. 2, in the various embodiments described above, pulverized coal conveying device can also include：First bypass duct 7, first
The valve 9 of valve 8 and second.Wherein, the pressure relief opening 110 of lock hopper 1 is connected by the first valve 8 with the material inlet 21 of separator 2
It is logical.The pressure relief opening 110 of lock hopper 1 also passes sequentially through the second valve 9, the first bypass duct 7 and is connected with the first pipeline 5, the first valve
The pipeline where pipeline and the second valve 9 and the first bypass duct 7 where door 8 and separator 2 is parallel pipeline.Specifically,
The pressure relief opening 110 of lock hopper 1 is connected by relief pipeline 14 with the material inlet 21 of separator 2, and the pipeline is provided with the first valve
Door 8, the first valve 8 is used for the break-make for controlling relief pipeline 14.The pressure relief opening 110 of lock hopper 1 also passes through the first bypass duct 7 and
One pipeline 5 is connected, and the first bypass duct 7 is provided with the second valve 9, and the second valve 9 is used to control the logical of the first bypass duct 7
Disconnected, then the bypass duct 7 of relief pipeline 14 and first is parallel pipeline.When it is implemented, first end (Fig. 2 of the first bypass duct 7
Shown bottom righthand side) it is connected with relief pipeline 14, the second end (Fig. 2 lower-left end) and the first pipeline 5 of the first bypass duct 7
It is connected.First valve 8 is arranged at relief pipeline 14 and is placed in after the tie point of the first bypass duct 7 and relief pipeline 14.
As can be seen that in the present embodiment, by setting the first bypass duct 7, also, the first valve 8 and the place of separator 2
Pipeline and the second valve 9 and the first bypass duct 7 where pipeline be parallel pipeline, so, blocked at separator 2
When, the first pressure release gas or the second pressure release gas can be delivered in the first pipeline 5 by the first bypass duct 7, be easy to follow-up to the
The processing of one pressure release gas and the second pressure release gas, effectively ensures the normal pressure release of lock hopper 1, and then ensure that fine coal conveying just
Often operation.
With continued reference to Fig. 2, in the various embodiments described above, pulverized coal conveying device can also include：Pressure regulator 10.Wherein, lock hopper 1
Pressure modulating opening 160 is offered, the opening of pressure regulator 10 is connected with the pressure modulating opening 160 of lock hopper 1, pressure regulator 10 is used to adjust lock hopper 1
Interior pressure.During the fine coal in lock hopper 1 is pressurizeed, pressure regulator 10 can adjust the pressure in lock hopper 1, so that lock
Fine coal is forced into preset pressure in bucket 1, it is ensured that the normal pressurization of fine coal.
With continued reference to Fig. 2, in above-described embodiment, pressure regulator 10 can include：Housing 101.Wherein, housing 101 is offered
First opening 1011 and the second opening 1012, the first opening 1011 are connected with the pressure modulating opening 160 of lock hopper 1.First opening 1011
When being more than preset pressure for the pressure in lock hopper 1, the pressurization gas in lock hopper 1 is received, the second opening 1012 is used for will pressurization
Gas is exported.That is, fine coal is delivered in lock hopper 1 with pressurization gas, the pressure of fine coal gradually rises, when the pressure of fine coal is more than
During preset pressure, part pressurization gas is delivered to the housing of pressure regulator 10 by the opening of pressure modulating opening 160 and first 1011 by lock hopper 1
In 101, pressure regulator 10 is again exported pressurization gas by the second opening 1012.When it is implemented, the first opening 1011 and lock hopper 1
Pressure-regulating pipe 15 is provided between pressure modulating opening 160, the pressure-regulating pipe 15 is provided with valve.
When the pressure that second opening 1012 is additionally operable in lock hopper 1 is less than preset pressure, receives second and supplement gas, first opens
Mouth 1011 is additionally operable to the second supplement gas being delivered in lock hopper 1.That is, when the pressure of fine coal in lock hopper 1 is less than default pressure
During power, the second supplement gas is delivered in the housing 101 of pressure regulator 10 by the second opening 1012, and pressure regulator 10 is again by the second supplement
Gas passes sequentially through the first opening 1011 and pressure modulating opening 160 is delivered in lock hopper 1, the second supplement gas and pressurization gas collective effect, makes
Obtain fine coal and reach preset pressure.Specifically, the second supplement gas can be carbon dioxide, or other gases, this implementation
Example is not intended to be limited in any to this.In the present embodiment, because pressurization gas is carbon dioxide, in order to keep the purity of carbon dioxide,
So the second supplement gas is also carbon dioxide.Second supplement gas has preset temperature and preset pressure, when it is implemented, this is default
Temperature and preset pressure can determine that the present embodiment is not intended to be limited in any to this according to actual conditions.In the present embodiment,
The temperature of second supplement gas is 140 DEG C, and pressure is 8.2MPa.
As can be seen that in the present embodiment, pressure regulator 10 from the interior release pressurization gas of lock hopper 1 by reducing the pressure in lock hopper 1
Power, or gas is supplemented to improve the pressure in lock hopper 1 by conveying second into lock hopper 1, enable to the pressure in lock hopper 1 to adjust
Save to preset pressure, it is ensured that the normal pressurization of fine coal, it is simple to operate, it is easy to implement；In addition, the second supplement gas has default temperature
Degree, can preferably improve the temperature of fine coal, it is ensured that the fine coal after pressurization has certain temperature.
With continued reference to Fig. 2, in above-described embodiment, pressure regulator 10 can also include：Filtering bodies 102.Wherein, filtering bodies 102
It is placed in housing 101, filtering bodies 102 are connected to the inwall of housing 101, also, filtering bodies 102 are placed in the first opening 1011 and
Between two openings 1012.The filtering bodies 102 are used to filter pressurization gas or the second supplement gas are filtered, and play and remove
The effect of dirt, it is ensured that pressurization gas and the second supplement gas are clean, particularly avoid pressurization gas and carry fine coal.
With continued reference to Fig. 1, in above-described embodiment, pressure regulator 10 can also include：Second bypass duct 11, the 3rd valve 12
With the 4th valve 13.Wherein, the pressure modulating opening 160 of lock hopper 1 passes through the 3rd valve 12 and the opening in communication of pressure regulator 10, lock hopper 1
Pressure modulating opening 160 be also connected by the 4th valve 13 with the second bypass duct 11, where the 3rd valve 12 and pressure regulator 10
Pipeline where pipeline and the 4th valve 13 and the second bypass duct 11 is parallel pipeline.Specifically, the pressure modulating opening 160 of lock hopper 1
It is connected by pressure-regulating pipe 15 with the first opening 1011 of pressure regulator 10, pressure-regulating pipe 15 is provided with the 3rd valve 12, the 3rd
Valve 12 is used for the break-make for controlling pressure-regulating pipe.The one end of the pressure modulating opening 160 of lock hopper 1 also with the second bypass duct 11 is connected,
The other end of second bypass duct 11 can also can be connected with openend with other equipment, be set on the second bypass duct 11
The 4th valve 13 is equipped with, the 4th valve 13 is used for the break-make for controlling the second bypass duct 11.When pressure regulator 10 is blocked, and
And, when the pressure in lock hopper 1 is more than preset pressure, the second bypass duct 11 is used to export in the pressurization gas in lock hopper 1.
When it is implemented, one end (lower end shown in Fig. 2) of the second bypass duct 11 can be connected with pressure-regulating pipe 15,
3rd valve 12 is arranged at pressure-regulating pipe 15 and is placed in after the tie point of the second bypass duct 11 and pressure-regulating pipe 15, the 4th valve
Door 13 is arranged at the second bypass duct 11.
As can be seen that in the present embodiment, by setting the second bypass duct 11, also, the 3rd valve 12 and pressure regulator 10
Pipeline where the pipeline at place and the 4th valve 13 and the second bypass duct 11 is parallel pipeline, so, at pressure regulator 10
Block, also, the pressure in lock hopper 1 be more than preset pressure when, the second bypass duct 11 can be by the pressurization gas in lock hopper 1
Output, maintains the preset pressure in lock hopper 1, and then ensure that the normal operation of fine coal conveying.
In summary, in the present embodiment, fine coal, the conveying of the first pressure release gas are isolated from the first pressure release gas by separator
Heated up into heat riser so that the first pressure release gas can keep certain temperature, it is therefore prevented that the first pressure release gas is because of pressure drop
Producing low temperature causes to condense blocking pipeline, it is ensured that the normal operation of fine coal conveying, solves pressurization lock hopper of the prior art
Decompression condensation, which easily occurs, in carrier gas in pressure leak process causes the problem of conveyance conduit is blocked.
Coal gasification system
The invention also provides a kind of coal gasification system.The coal gasification system can include above-mentioned fine coal conveying dress
Put.Wherein, the specific implementation process of the pulverized coal conveying device is referring to described above, and the present embodiment will not be repeated here.
Because pulverized coal conveying device has the effect above, so the coal gasification system with the pulverized coal conveying device also has
There is corresponding technique effect.
Fine coal carrying method
The invention also provides a kind of fine coal carrying method.Referring to Fig. 3, Fig. 3 provides fine coal conveying for the embodiment of the present invention
The flow chart of method.As illustrated, the fine coal carrying method may include steps of：
Separating step S1, the pressure release gas in lock hopper is delivered in separator, and separator carries pressure release gas and pressure release gas
Fine coal separated.
Specifically, referring to Fig. 1, the pressure relief opening 110 of lock hopper 1 is connected with the material inlet 21 of separator 2.Fine coal is by lock hopper
1 fine coal charging aperture 130 is delivered in lock hopper 1, when the fine coal in lock hopper 1 reaches specified material position, stops adding fine coal.Have
The pressurization gas of default pressed temperature and preset pressure is delivered in lock hopper 1 by the pressurization gas input port 150 of lock hopper 1, in lock hopper 1
Interior, pressurization gas pressurizes to fine coal so that the pressure rise of fine coal.When fine coal is forced into preset pressure, after pressurization
Fine coal is exported by fine coal discharging opening 140.Pressurization gas in lock hopper 1 is pressure release gas, and pressure release gas is exported to separation by pressure relief opening 110
In device 2, the fine coal that separator 2 is carried to pressure release gas and pressure release gas is separated.
The pressure release gas isolated is delivered in heat riser and heated up by heating step S2, separator.
Specifically, referring to Fig. 1, the gas vent 22 of separator 2 is connected with the entrance of heat riser 16, gas vent 22
Pressure release gas for separator 2 to be isolated is delivered in heat riser 16.Heat riser 16 heats up to pressure release gas, so that
Pressure release gas reaches preset temperature.When it is implemented, heat riser 16 makes the mode of pressure release gas lift temperature have a lot, the present embodiment is to this
It is not intended to be limited in any.The preset temperature that pressure release gas reaches can determine that the present embodiment is not made any to this according to actual conditions
Limitation.
Step S3 is exported, the pressure release gas after heat riser will heat up is exported.
Specifically, the pressure release gas after heat riser 16 will heat up is exported by the outlet 162 of heat riser 16.
As can be seen that in the present embodiment, isolating fine coal from pressure release gas by separator 2, pressure release gas is in heat riser
It is middle to be heated up so that pressure release gas can keep certain temperature, it is therefore prevented that pressure release gas causes to condense stifled because pressure drop produces low temperature
Fill in pipeline, it is ensured that the normal operation of fine coal conveying.
In above-described embodiment, in heating step S2, heat riser is blender, and into blender, input has preset temperature
Supplement gas, and by supplement gas mixed with the pressure release gas isolated.
Specifically, referring to Fig. 2, blender 4 makes the mode of pressure release gas lift temperature have a lot, in the present embodiment, by mixed
Supplement gas of the input with preset temperature in clutch 4, supplement gas is mixed with pressure release gas, to improve the temperature of pressure release gas.
The gas vent 22 of separator 2 is connected with the first entrance 41 of blender 4, and gas vent 22 is used to isolate separator 2
Pressure release gas be delivered to by first entrance 41 in blender 4.The second entrance 42 of blender 4, which is used to receive, has preset temperature
Supplement gas, blender 4 by pressure release gas with supplement gas mixed so that the temperature of gaseous mixture reaches preset temperature, gaseous mixture
Exported by the outlet 43 of blender 4.
As can be seen that in the present embodiment, heat riser 16 is blender 4, there is default temperature by being conveyed into blender 4
The supplement gas of degree carries out mending temperature to pressure release gas, simple and convenient, it is easy to operate.
In above-described embodiment, in separating step S1, the fine coal isolated is delivered to lock hopper by separator.
Specifically, the solid outlet 23 of separator 2 is connected by tremie pipe 3 with the feedback outlet 120 of lock hopper 1, separator 2
The fine coal isolated is delivered in lock hopper 1 by tremie pipe 3.
As can be seen that in the present embodiment, the fine coal isolated is fed directly in lock hopper 1 by tremie pipe 3, reduces powder
Coal circulating path, substantially reduces technological process, reduces abrasion of the fine coal in course of conveying to pipeline, extends making for pipeline
With the life-span, the efficiency of fine coal pressurized delivered is improved.
It should be noted that pulverized coal conveying device, coal gasification system and fine coal carrying method principle phase in the present invention
Together, related part can be with cross-referenced.
In summary, in the present embodiment, fine coal is isolated from pressure release gas by separator, pressure release gas is in heat riser
Heated up so that pressure release gas can keep certain temperature, it is therefore prevented that pressure release gas causes to condense because pressure drop produces low temperature to be blocked
Pipeline, it is ensured that the normal operation of fine coal conveying.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (14)
1. a kind of pulverized coal conveying device, it is characterised in that including：Lock hopper (1), separator (2) and heat riser (16)；Wherein,
The pressure relief opening (110) of the lock hopper (1) is connected with the material inlet (21) of the separator (2), the separator (2)
Fine coal is isolated for receiving the first pressure release gas in the lock hopper (1), and from the first pressure release gas；
The solid outlet (23) of the separator (2) is connected with the feedback outlet (120) of the lock hopper (1), the solid outlet
(23) it is used to the fine coal isolated being delivered to the lock hopper (1)；
The gas vent (22) of the separator (2) is connected with the entrance (161) of the heat riser (16), the heating dress
Put (16) be used for receive separate after the first pressure release gas, and the first pressure release gas is heated up；The heat riser
(16) outlet (162) is used to export the first pressure release gas after heating.
2. pulverized coal conveying device according to claim 1, it is characterised in that the heat riser is blender (4)；Its
In,
Gas vent (22) phase that the first entrance (41) of the blender (4) passes through the first pipeline (5) and the separator (2)
Connection, the first entrance (41) of the blender (4) is used to receive the first pressure release gas；The second of the blender (4) enters
Mouthful (42) are used to receive the first supplement gas with preset temperature, and the outlet (43) of the blender (4) is used for described first
Pressure release gas is exported with the described first mixed gaseous mixture of supplement gas.
3. pulverized coal conveying device according to claim 1, it is characterised in that also include：Second pipe (6)；Wherein,
The separator (2) is used to receive the second pressure release gas in the lock hopper (1), and is isolated from the second pressure release gas
Fine coal；
The second pipe (6) is connected with first pipeline (5), and the second pipe (6) is used to receiving and exporting described
Second pressure release gas.
4. pulverized coal conveying device according to claim 1, it is characterised in that the separator (2) is placed in the lock hopper (1)
Top.
5. the pulverized coal conveying device according to claim 1 or 4, it is characterised in that
The solid outlet (23) of the separator (2) is connected by tremie pipe (3) with the feedback outlet (120) of the lock hopper (1)；
The side wall of the tremie pipe (3) offers air inlet (31), and the air inlet (31) is used for defeated into the tremie pipe (3)
The gas for entering to drive the fine coal in the tremie pipe (3) to be back in the lock hopper (1).
6. pulverized coal conveying device according to claim 1, it is characterised in that also include：First bypass duct (7), first
Valve (8) and the second valve (9)；Wherein,
The pressure relief opening (110) of the lock hopper (1) passes through first valve (8) and the material inlet (21) of the separator (2)
It is connected；
The pressure relief opening (110) of the lock hopper (1) also passes sequentially through second valve (9), first bypass duct (7) and institute
State the first pipeline (5) to be connected, the pipeline where first valve (8) and the separator (2) and second valve (9)
It is parallel pipeline with the pipeline where first bypass duct (7).
7. pulverized coal conveying device according to claim 1, it is characterised in that also include：Pressure regulator (10)；Wherein,
The opening of the pressure regulator (10) is connected with the pressure modulating opening (160) of the lock hopper (1), and the pressure regulator (10) is used to adjust
Save the pressure in the lock hopper (1).
8. pulverized coal conveying device according to claim 7, it is characterised in that the pressure regulator (10) includes：Housing
(101)；Wherein,
The housing (101) offers the first opening (1011) and the second opening (1012), first opening (1011) and institute
The pressure modulating opening (160) for stating lock hopper (1) is connected；
First opening (1011) is used to, when the lock hopper (1) pressure is more than preset pressure, receive in the lock hopper (1)
Pressurize gas；Second opening (1012) is used for the pressurization gas output；
Second opening (1012) is additionally operable to, when the lock hopper (1) pressure is less than preset pressure, receive second and supplement gas；Institute
The first opening (1011) is stated also to be delivered in the lock hopper (1) with by the described second supplement gas.
9. pulverized coal conveying device according to claim 7, it is characterised in that the pressure regulator (10) also includes：Filtering bodies
(102)；Wherein,
The filtering bodies (102) are connected to the inwall of the housing (101).
10. pulverized coal conveying device according to claim 7, it is characterised in that also include：Second bypass duct (11),
Three valves (12) and the 4th valve (13)；Wherein,
The pressure modulating opening (160) of the lock hopper (1) passes through the 3rd valve (12) and the opening in communication of the pressure regulator (10)；
The pressure modulating opening (160) of the lock hopper (1) is connected by the 4th valve (13) with second bypass duct (11),
Pipeline and the 4th valve (13) and second shunt valve where 3rd valve (12) and the pressure regulator (10)
Pipeline where road (11) is parallel pipeline.
11. a kind of coal gasification system, it is characterised in that including：Fine coal pressurization as any one of claim 1 to 10
Conveying device.
12. a kind of fine coal carrying method, it is characterised in that comprise the following steps：
Separating step, the pressure release gas in lock hopper is delivered in separator, and the separator is by the pressure release gas and the pressure release
The fine coal that gas is carried is separated；
The pressure release gas isolated is delivered in heat riser and heated up by heating step, the separator；
Step is exported, the pressure release gas after the heat riser will heat up is exported.
13. fine coal carrying method according to claim 12, it is characterised in that in the heating step, the heating dress
Blender is set to, supplement gas of the input with preset temperature into the blender, and supplement gas and the pressure release gas by described
Mixed.
14. fine coal carrying method according to claim 12, it is characterised in that in the separating step, the separator
The fine coal isolated is delivered to lock hopper.
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