CN208791581U - Pressurization of dry pulverized coal dense-phase transporting system - Google Patents
Pressurization of dry pulverized coal dense-phase transporting system Download PDFInfo
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- CN208791581U CN208791581U CN201821058182.8U CN201821058182U CN208791581U CN 208791581 U CN208791581 U CN 208791581U CN 201821058182 U CN201821058182 U CN 201821058182U CN 208791581 U CN208791581 U CN 208791581U
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- 239000003245 coal Substances 0.000 title claims abstract description 90
- 239000002817 coal dust Substances 0.000 claims abstract description 99
- 230000001276 controlling effect Effects 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 24
- 238000005276 aerator Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- 238000005243 fluidization Methods 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 2
- 230000002045 lasting effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 25
- 238000002309 gasification Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 238000001514 detection method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a kind of pressurization of dry pulverized coal dense-phase transporting system, including normal pressure pulverized coal repository, feedstock vessel and the feed-line for realizing the system operation, the normal pressure pulverized coal repository feed opening is connect with the feedstock vessel feed inlet, and the system also includes weight detecting components, flow is adjustable conveying device and control system；The weight detecting component is arranged on the feedstock vessel, for detecting coal dust weight in the feedstock vessel；The adjustable conveying device of flow, is arranged in the discharge port of the feedstock vessel, for the coal dust of the feedstock vessel to be quantitatively discharged；The control system, input terminal are connect with the weight detecting component, and output end is connect with the adjustable conveying device of the flow, for regulating and controlling the coal dust output speed of the adjustable conveying equipment of the flow.The pressurization of dry pulverized coal dense-phase transporting system can be realized the stable and accurate lasting conveying of coal dust.
Description
Technical field
The utility model belongs to the mass flow technique field of powder material, in particular to a kind of to be suitable for entrained flow gasification
Pressurization of dry pulverized coal dense-phase transporting system.
Background technique
Dry coal powder airflow bed gasification is because coal adaptability is wide, gasification efficiency is high, effective Gas content is high and meets enlargement
It is required that the features such as, development is very fast in recent years.Pressurization of dry pulverized coal two-phase transportation is the raw material supply source of dry method entrained flow gasification, is
Influence one of the key technology of dry coal powder pressure gasifying continuous and steady operation.
Pressurization of dry pulverized coal two-phase transportation generallys use the semi continuous coal of the boosting of coal dust interruption and the lower continuous-feeding that pressurizes
Technique, feed coal are milled into satisfactory coal dust through ball mill, are introduced into normal pressure feed bin, then enter pressurization by normal pressure feed bin
Hopper travels further into the work hopper that pressure is slightly above gasification furnace, is thus blowed by inert gas to gasification furnace after pressurization.
Chinese patent, CN102260535A discloses a kind of GSP gasification furnace coal dust feed-line and feeding method, coal dust are defeated
It send device to be arranged vertically, from top to bottom respectively coal bunker, lock hopper, feeding warehouse, then send by coal dust feed-line to gasification furnace
Burner.The coal dust conveying technique is detected and is adjusted to the coal dust delivery situation of every coal dust feed-line by detecting meter,
When the coal dust delivery situation in pipeline is unstable, needing to continue detection just can be to GSP gas until delivery situation is stablized
Change and feeds intake in furnace.
The prior art can be realized the stable operation of coal dust conveying to a certain extent, still, the prior art has at least the following problems:
Firstly, detection process is complex and the duration is longer；Unstable situation is conveyed secondly there are the coal dust of late coming, this
When need to stop again feeding intake, again carry out coal dust conveying adjusting, cannot achieve the defeated of coal dust continuous-stable to a certain extent
It send.Finally, pulverized coal conveying device is very huge, especially vertical height is usually more than 50 meters, and construction cost is high.
Utility model content
To solve the above-mentioned problems, the utility model provides pressurization of dry pulverized coal dense-phase transporting system, can be realized coal dust
Stable and accurate lasting conveying.
To achieve the goals above, the utility model uses following technical scheme:
A kind of pressurization of dry pulverized coal dense-phase transporting system, including normal pressure pulverized coal repository, feedstock vessel and the realization system
The feed-line of operation, the normal pressure pulverized coal repository feed opening are connect with the feedstock vessel feed inlet, the system also includes
Weight detecting component, flow are adjustable conveying device and control system；
The weight detecting component is arranged on the feedstock vessel, for detecting coal dust weight in the feedstock vessel；
The adjustable conveying device of flow, is arranged in the discharge port of the feedstock vessel, for the feedstock vessel to be quantitatively discharged
Coal dust；
The control system, input terminal are connect with the weight detecting component, and output end and the adjustable conveying of the flow fill
Connection is set, for regulating and controlling the coal dust output speed of the adjustable conveying device of the flow.
Further, further include pressure-equalizing pipe, one end is connect with the adjustable conveying device of the flow, the other end with it is described
Feedstock vessel connection, for balancing the interior environmental pressure between the two.
It further, further include triple valve, input port is connect with the material outlet of the adjustable conveying device of the flow, the
One delivery outlet is connect with gasifier nozzle, and the second delivery outlet is connect with the normal pressure pulverized coal repository.
Further, the second delivery outlet of the triple valve is connect by back pressure pipe with the normal pressure pulverized coal repository.
Further, the normal pressure pulverized coal repository includes one or more feed openings, respectively to the different feedstock vessels
Feed；The feedstock vessel includes at least two, and structure is identical.
Further, further includes:
Relief tube, one end are connect with the feedstock vessel, and the other end is connect with the normal pressure pulverized coal repository；The relief tube
On be provided with relief valve；
Bag filter is set to the top of the normal pressure pulverized coal repository.
Further, the weight detecting component is weighing sensor, and the weighing sensor is located at the feedstock vessel
Top, outside portion or bottom.
Further, the adjustable conveying device of the flow is rotary feeder, and the control system and the rotation are fed
The variable-frequency motor of machine connects, and the control system controls the rotary feeder by controlling the revolving speed of the variable-frequency motor
Coal dust output speed；
Conveying wind aerator is provided at the material outlet of the rotary feeder, to convey the rotation using conveying gas
Turn the coal dust of batcher discharge.
Further, further include powder fluidized device, the powder fluidized device be respectively provided at normal pressure pulverized coal repository with
And the lower part of the feedstock vessel, for keeping the fluidized state of coal dust inside the two；The normal pressure pulverized coal repository and described
The lower part of feedstock vessel is cone bucket.
Further, high pressure tank, three branch lines of outlet setting, respectively fluidisation air pipe are used for described
The conveying air pipe of the pressurising pipeline of feedstock vessel inflation and the coal dust for conveying the rotary feeder discharge, the fluidized gas
Pipeline is connect with the powder fluidized device of the lower part of the feedstock vessel；
Low pressure gasholder, two branch lines of outlet setting, a branch line is connect with the bag filter, another
A branch line is connect with the powder fluidized device of normal pressure pulverized coal repository lower part.
Technical solution provided by the utility model has the benefit that
1) by the weight detecting component installed on feedstock vessel, can in real-time detection to feedstock vessel coal dust weight, from
And the coal dust weight change in feedstock vessel can be calculated in real time, it prepares for duration stable material-supplying.
2) the coal dust weight that control system is detected according to weight detecting component, the coal dust weight calculated in feedstock vessel in real time become
Change, and then the coal dust output quantity of the adjustable conveying device of regulating flow, realizes the accurate feeding of the stabilization of transportation system.
3) coal powder metering is accurate, easy to operate, and operating cost is low.
4) vertical height that can significantly reduce pulverized coal conveying device, reduces equipment construction expense, reduces investment.
Detailed description of the invention
Fig. 1: for a kind of schematic diagram of embodiment of pressurization of dry pulverized coal dense-phase transporting system provided by the utility model.
Description of symbols:
1- normal pressure pulverized coal repository, 11- bag filter, 2- feedstock vessel, 21- weighing sensor, 3- rotary feeder,
31- variable-frequency motor, 4- triple valve, 5- back pressure pipe.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
A kind of preferred embodiment of pressurization of dry pulverized coal dense-phase transporting system provided by the utility model, as shown in Figure 1,
Including normal pressure pulverized coal repository 1, high pressure feedstock vessel 2 and the feed-line for realizing transportation system operation, normal pressure pulverized coal repository 1
Feed opening is connect with 2 feed inlet of feedstock vessel, supplies coal dust to feedstock vessel 2.Feedstock vessel 2 is equipped with for detecting its interior coal dust weight
Weight detecting component, which measures coal dust weight in feedstock vessel 2 in real time or according to predetermined period, and passes through
The pulverized coal mass flow i.e. coal dust output speed of current feedstock vessel 2 is calculated in residual quantity.The discharge port of feedstock vessel 2 is equipped with flow
Adjustable conveying device, control system are at least connect with weight detecting component and the adjustable conveying device of flow, which receives
Coal dust weight information, that is, the residual quantity or pulverized coal mass flow of weight detecting component detection, and by the residual quantity or pulverized coal mass flow with
Preset value comparison in control system, according to the coal dust output quantity of the adjustable conveying device of comparing result regulating flow, and then guarantees
The stabilization of transportation system accurately conveys.
Specifically, weight detecting component obtains the coal dust weight in the two neighboring period in feedstock vessel 2, pass through residual quantity meter
It calculates and obtains the mass flow of discharge coal dust, and the pulverized coal mass flow information being calculated is sent to control system, control system
System compares it with preset value, which can be the weight loss of coal dust in special time period feedstock vessel 2, or coal dust
Mass flow, if the mass flow of coal dust is excessive, control system will reduce the revolving speed of the adjustable conveying device of flow, conversely, such as
The mass flow of fruit coal dust is too small, and control system will increase the revolving speed of the adjustable conveying device of flow, so that coal dust discharge rate be made to protect
It holds in a certain range.
In order to eliminate the influence that pressure difference is fed transportation system, can feedstock vessel 2 and the adjustable conveying device 2 of flow it
Between pressure-equalizing pipe is set, one end of the pressure-equalizing pipe is connect with the adjustable conveying device of flow, the other end and feedstock vessel 2
Upper end connection, pressure-equalizing pipe is equipped with balanced valve, when system is run, opens balanced valve, realizes that feedstock vessel 2 and flow are adjustable defeated
The pressure balance between device is sent, guarantees the smooth of material conveying.
According to different gas circuit demands, matches in this system and be arranged with high pressure tank and low pressure gasholder, high pressure therein
The gas circuit outlet of air accumulator is set there are three branch line, respectively fluidisation air pipe, pressurising pipeline and conveying air pipe, feedstock vessel
It is respectively arranged below with the adjustable conveying device of flow, powder fluidized device and conveying wind aerator, fluidisation air pipe and coal therein
The connection of powder fluidizer, pressurising pipeline are connected to feedstock vessel, conveying air pipe and the material that the adjustable conveying device of flow is arranged in
The conveying wind aerator of equipped at outlet port is connected to.The gas circuit outlet of low pressure gasholder therein is set there are two branch line, and one point
Bye-pass is connect with the bag filter at the top of normal pressure pulverized coal repository, another branch line and normal pressure pulverized coal repository lower part
Powder fluidized device connection.
High pressure tank therein is also referred to as high-pressure buffering pot, and principal security conveys the pressure stabilization and stability of flow of gas.It is high
Pressure air accumulator is mainly used for as conveying wind and the coal dust of feedstock vessel discharge outlet being allowed to be in fluidisation shape to feedstock vessel pressurising
State, pressure will be determined according to the pressure demand of upstream device.If pressure needed for upstream device is 10 kilograms, it is contemplated that conveying
The pressure loss of process, high pressure tank may need 20 kilograms of pressure；If the pressure demand of upstream device is 20 kilograms,
High pressure tank may need 30 kilograms of pressure.Occurrence needs to be calculated by detailed.High pressure tank be relative to
For low pressure gasholder, the gas in low pressure gasholder is mainly used for normal pressure pulverized coal repository gas-flow closure and guarantees under it
Coal dust at material mouth is in fluidized state, bag filter purging is used, and pressure does not need too high pressure in general low pressure gasholder
Power is less than 4 kilograms.
Since in two-phase transportation, coal dust needs higher external pressure force feed, therefore, under the adjustable conveying device of flow
Material mouth (i.e. material outlet) is first filled the gas in high pressure tank by pressurising pipeline with conveying wind aerator is arranged with
Enter in feedstock vessel, after being fed pressure tank and being charged to certain pressure (assuming that 10 kilograms), starts powder fluidized device, output stream at this time
Change wind for the powder fluidized near the feed opening of feedstock vessel or normal pressure pulverized coal repository, make it easier to flow, then opens conveying
Wind aerator, starts rotary feeder, and the conveying wind of conveying wind aerator output takes away coal dust and flows to gasification burner burner position.
External high pressure tank supply high-pressure blast is conveyed in wind aerator by conveying tracheae road direction is filled with high-pressure blast, defeated
Air-supply aerator inputs coal dust conveying wind into coal dust feed-line, the coal through feedstock vessel 2 and the adjustable conveying device output of flow
Powder passes through coal dust feed-line under the promotion of coal dust conveying wind, into gasifier nozzle.
Triple valve 4, the connection gasifier nozzle all the way of triple valve 4 are equipped on coal dust feed-line, another way passes through
Feed-line equipped with back pressure pipe 5 is connected to normal pressure pulverized coal repository 1.Under system normal operation, coal dust passes through triple valve 4
Into gasifier nozzle, when system emergency parking or failure, coal dust can return to normal pressure along the feed-line for being equipped with back pressure pipe 5
Pulverized coal warehouse prevents the blocking caused by transportation system of emergency stop or failure.
Normal pressure pulverized coal repository 1 may include one or more feed openings, be fed to feedstock vessel 2.In order to guarantee delivery system
That unites steadily continues feeding, and feedstock vessel 2 includes at least two, is illustrated by taking feedstock vessel there are two the system contains as an example below,
The structure of two feedstock vessels 2 is identical, is mounted on weight detecting component on each feedstock vessel 2, discharge port is mounted on flow
Adjustable conveying device, two feedstock vessels 2 can simultaneously to gasification burner pulverized coal conveying, or respectively to gasification burner pulverized coal conveying (i.e.
Alternately continuously to gasification burner pulverized coal conveying).
It should be noted that feedstock vessel 2 can be only under the premise of being not necessary to guaranty that conveying material is successional for a long time
Setting one stops coal dust conveying, then to 2 pressure release of feedstock vessel, passes through normal pressure after coal dust conveying in the feedstock vessel 2
The charging of coal dust repository, pressurising conveys material again again after charging.If the downstream of feedstock vessel correspond to multiple users (such as
Multiple gasification burners), at this point it is possible to be fed simultaneously using multiple feedstock vessels, accordingly, normal pressure pulverized coal repository be equipped with it is multiple under
Material mouth passes through the feeding into multiple feedstock vessels respectively of multiple feed openings.
When the continuity to conveying material requires, when needing to consider spare, need at least to use 2 feedstock vessels.Two
A feedstock vessel conveys material in turn, guarantees the continuous-stable of material conveying.Or three feedstock vessels can be used, two of them are given
Batch can feeding simultaneously, another feedstock vessel is spare, when the coal dust weight in one of feedstock vessel is less than setting value, opens standby
Use feedstock vessel.
Usual situation, in order to guarantee the lasting feed of transportation system, using two feedstock vessels, in two feedstock vessels 2, wherein
One feedstock vessel 2 is spare as another feedstock vessel 2, at this time it is considered that being filled with coal dust in spare feedstock vessel 2, and
It is pressurized to working pressure conditions.When coal dust weight is less than setting value in a running feedstock vessel 2 (i.e. the first feedstock vessel),
Control system gradually turns down the motor speed of the adjustable conveying device of flow thereon, and then turns down coal dust output quantity, meanwhile, it opens standby
With the material output valve on storage tank (i.e. the second feedstock vessel), it is upper that control system regulation is gradually increased spare feedstock vessel 2
The motor speed of adjustable conveying device is measured, its coal dust output quantity is also just turned up, until being adjusted to the stream on an aforementioned feedstock vessel 2
The motor speed of amount control equipment is zero, and the motor speed of the flow-control equipment on spare feedstock vessel 2 reaches stationary value, also
It is that coal dust output quantity reaches stationary value.In two feedstock vessel alternation procedures, wherein the drop of the coal dust output quantity of the first feedstock vessel
Low velocity is identical as increasing speed for the coal dust output quantity of another feedstock vessel, to guarantee total coal dust output speed of the two output
Identical, when the motor speed of the adjustable conveying device of flow below the first feedstock vessel is zero, the coal dust of the second feedstock vessel is exported
Coal dust output speed needed for rate should reach user.
Setting value therein and a minimum material position value, when the coal dust in feedstock vessel is lower than this material position, fluidized gas meeting
Excessively fluidisation, causes coal dust blanking uneven, which can be obtained by test or theoretical calculation.Therefore, need to use it is spare to
When batch can, when the coal dust weight in the feedstock vessel being currently running be less than the setting value, i.e., just need to enable spare feedstock vessel.
And the regulation process can be automatically controlled completely by control system and be completed, it can also be complete manually by operating personnel
At.The regulation process realizes the continuous-stable supply that coal dust is supplied in transportation system, guarantees the pressurized gasification of entrained flow gasification
Continuous and steady operation.
During realizing automatic control by control system, since the motor speed of the adjustable conveying device of flow is got over
Fastly, the coal dust amount exported in the flow adjustable conveying device unit time is more, conversely, motor speed is slower, coal in the unit time
The output quantity of powder is fewer, can obtain the relationship between motor speed and coal dust output quantity by test, then in switching, lead to
The revolving speed that PLC program controls two batchers is crossed, to guarantee that output doses is certain.
In the presence of spare feedstock vessel 2 is as a high pressure hollow tank, before connecting operation with transportation system, it is necessary first to
To 2 pressure release of feedstock vessel, opening and the valve on 1 connecting line of normal pressure pulverized coal repository, add to feedstock vessel 2 after pressure release to normal pressure
Coal.After coal, valve is closed, operating pressure is pressurized into feedstock vessel 2, opens spare 2 upper pressure balance pipe of feedstock vessel
Valve, for use.
In 2 pressure release of feedstock vessel exhaust, the pressure release gas exhaust piping of feedstock vessel 2 and the gas exhaust piping of normal pressure pulverized coal repository 1
Connection, the top of normal pressure pulverized coal repository 1 are equipped with bag filter 11, are filtered to from the gas of inside discharge, later
It is discharged into atmosphere again, avoids environmental pollution.
It should be noted that weight detecting component used in above system is preferably weighing sensor 21, which is passed
Sensor 21 can be located at the top, outside portion or bottom of feedstock vessel 2.It can also select and can automatically detect weight of material and can
Carry out other detection devices or weighing-appliance that detection signal carries out on-line normalization.
In order to improve operation convenience and feeding accuracy, the adjustable conveying device of flow therein is preferably by variable-frequency motor
The rotary feeder 3 of 31 drivings, control system control the coal dust of rotary feeder 3 by controlling the revolving speed of variable-frequency motor 31
Output quantity.Control system therein can be realized by PLC control panel or single-chip microcontroller.
In order to guarantee that coal dust persistently keeps fluidized state in normal pressure pulverized coal repository 1 and feedstock vessel 2, increases the stream of coal dust
Dynamic property, avoids coal dust from occurring accumulating or block in feed opening or discharge port, can be in normal pressure pulverized coal repository and feedstock vessel 2
Lower part is installed by powder fluidized device respectively.Wherein, the powder fluidized device in feedstock vessel 2 uses high pressure fluidizing gas, by outside
High pressure tank provide, the powder fluidized device inside normal pressure pulverized coal repository 1 uses low pressure fluidizing gas, by the low of outside
Air accumulator is pressed to provide.
High pressure gas used in system is provided by external high pressure tank, and low-pressure gas is by external low pressure gas storage
Tank provides.Wherein, the high pressure gas in high pressure tank is preferably high pressure nitrogen or high-pressure carbon dioxide；In low pressure gasholder
Low-pressure gas is preferably low-pressure nitrogen or low pressure CO 2.
Embodiment
In following embodiment, weight detecting component selects weighing sensor 21, and conveying device that flow is adjustable selects rotation to give
Material machine 3, control system is realized by PLC control panel.
The pressurization of dry pulverized coal dense-phase transporting system of the present embodiment, as shown in Figure 1, its main structure is followed successively by often from top to bottom
Coal dust repository 1, feedstock vessel 2 and rotary feeder 3 are pressed, the top of normal pressure pulverized coal repository 1 is equipped with coal powder entrance and cloth bag removes
Dirt device 11, it is ground and be dried to certain partial size and the coal dust of water content enters normal pressure pulverized coal warehouse, usual grain when normal operation
Diameter is 500 microns of coal dusts below.Feed opening is equipped with powder fluidized blowing device；The feed opening of normal pressure pulverized coal repository 1 passes through
Hose is connected to the feed inlet of feedstock vessel 2, and hose is equipped with valve.Feedstock vessel 2 includes two, on normal pressure pulverized coal repository 1
If there are two feed opening, the coal into two feedstock vessels 2 respectively.
The outside of feedstock vessel 2 is equipped with weighing sensor 21, and discharge end is equipped with powder fluidized blowing device, discharge port installation
There is rotary feeder 3, enters rotary feeder 3, rotary feeder 3 and feedstock vessel 2 by the coal dust of powder fluidized blowing device
Between pass through pressure-equalizing pipe be connected to.
PLC control panel is equipped with outside feedstock vessel 2, weighing sensor 21 is according to predetermined period to the coal dust in feedstock vessel 2
It weighs, and weight information is sent to PLC control panel, obtain the difference of front and back weight according to pre-set programs therein,
The pulverized coal flow of feedstock vessel 2 is obtained, by the pulverized coal flow compared with setting value, if it is greater than setting value, PLC control system will
Reduce the revolving speed of rotary feeder 3；, whereas if being less than setting value, PLC control system just will increase turning for rotary feeder 3
Speed, so that it is guaranteed that the output coal dust that coal dust charging gear can be accurate, stable.
The structure of two feedstock vessels 2 is identical, only gived in attached drawing 1 feedstock vessel A high pressure gas delivery pipe line chart and
Balance pipe connection figure, feedstock vessel B's does not provide.PLC control system therein be represented by dashed line respectively with weighing sensor 21, rotation
Turn the communication connection of batcher 3.
It is respectively equipped with triple valve 4 on the coal dust feed-line of two 2 lower sections of feedstock vessel, one be connected to gasifier nozzle
It crosses, another is connected to by being equipped with the coal dust pipeloop of back pressure pipe 5 with normal pressure pulverized coal repository 1 respectively.
Feedstock vessel 2 is communicated with high pressure tank, for high pressure gas needed for providing feedstock vessel 2, is fed after meeting coal
The demand of wind is conveyed in the operating pressure pressurising of tank 2, fluidized gas supply and coal dust feed-line.
It is communicated with low pressure gasholder with normal pressure pulverized coal repository 1, for supplying the fluidized gas needs of its feed opening and right
In the blowback air of bag filter 11, to prevent bag filter 11 from blocking.
The operating method of two 2 unsynchronized revolutions of feedstock vessel (alternately continuous operation) is as follows:
When above-mentioned two feedstock vessel 2 works, when feedstock vessel A is in operating status, feedstock vessel B is in high pressure hollow tank shape
State, what coal dust feed flow at this time was realized by adjusting 3 revolving speed of rotary feeder to control the weight loss of feedstock vessel A.
When preparing that system operation for feedstock vessel B is added, need that normal pressure pulverized coal storage first is opened in feedstock vessel B pressure release to normal pressure
Valve between storehouse and feedstock vessel B, to feedstock vessel B coal, after close valve.Pass through high pressure tank later to feedstock vessel
B is pressurized to operating pressure, opens the valve on the balance pipe of feedstock vessel B, and feedstock vessel B is stand-by.
When coal dust weight is less than certain value in feedstock vessel A, the revolving speed of feedstock vessel A rotary feeder 3 is gradually turned down, together
The rotary feeder 3 of Shi Kaiqi feedstock vessel B, and it is gradually increased the revolving speed of rotary feeder 3, until the rotation of feedstock vessel A is fed
3 revolving speed of machine is zero, and coal dust feed flow at this time controls feedstock vessel 2A and feedstock vessel 2B by adjusting 3 revolving speed of rotary feeder
The weight loss of the two and realize.
By feedstock vessel A and feedstock vessel B alternate run, and control rotation feed when feedstock vessel A and feedstock vessel B switches
3 revolving speed of machine, the stabilization that coal dust may be implemented accurately persistently convey.
As known by the technical knowledge, the utility model can pass through other essence without departing from its spirit or the reality of essential feature
Scheme is applied to realize.Therefore, embodiment disclosed above, in all respects are merely illustrative, and are not only
's.All changes that come within the scope of the invention or equivalents of the invention are by the utility model packet
Contain.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description the utility model rather than requires the utility model that must be constructed and operated in a specific orientation, therefore
It should not be understood as limiting the present invention.Term used in the utility model " connected ", " connection ", " setting " should be done extensively
Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected；It can be directly connected, middle part can also be passed through
Part is indirectly connected；It can be wired electrical connection, radio connection, be also possible to wireless communication signals connection and be also possible to channel radio
Believe signal connection, for the ordinary skill in the art, can understand specifically containing for above-mentioned term as the case may be
Justice.
Claims (11)
1. a kind of pressurization of dry pulverized coal dense-phase transporting system, including normal pressure pulverized coal repository, feedstock vessel and the realization system fortune
Capable feed-line, the normal pressure pulverized coal repository feed opening are connect with the feedstock vessel feed inlet, which is characterized in that the system
System further includes weight detecting component, flow is adjustable conveying device and control system；
The weight detecting component is arranged on the feedstock vessel, for detecting coal dust weight in the feedstock vessel；
The adjustable conveying device of flow, is arranged in the discharge port of the feedstock vessel, for the coal of the feedstock vessel to be quantitatively discharged
Powder；
The control system, input terminal are connect with the weight detecting component, and output end and the adjustable conveying device of the flow connect
It connects, for regulating and controlling the coal dust output speed of the adjustable conveying device of the flow.
2. transportation system according to claim 1, which is characterized in that
It further include pressure-equalizing pipe, one end is connect with the adjustable conveying device of the flow, and the other end is connect with the feedstock vessel, is used
Interior environmental pressure between balancing the two.
3. transportation system according to claim 1 or 2, which is characterized in that
It further include triple valve, input port is connect with the material outlet of the adjustable conveying device of the flow, the first delivery outlet and gas
Change the connection of furnace burner, the second delivery outlet is connect with the normal pressure pulverized coal repository.
4. transportation system according to claim 3, which is characterized in that
Second delivery outlet of the triple valve is connect by back pressure pipe with the normal pressure pulverized coal repository.
5. transportation system according to claim 1, which is characterized in that
The normal pressure pulverized coal repository includes one or more feed openings, is fed respectively to the different feedstock vessels；The feed
Tank includes at least two, and structure is identical.
6. transportation system according to claim 5, which is characterized in that
Further include: relief tube, one end are connect with the feedstock vessel, and the other end is connect with the normal pressure pulverized coal repository, described to let out
Relief valve is provided in pressure pipe；
Bag filter is set to the top of the normal pressure pulverized coal repository.
7. transportation system according to claim 5, which is characterized in that
The weight detecting component is weighing sensor, the weighing sensor be located at the top of the feedstock vessel, outside portion or
Bottom.
8. transportation system according to claim 5, which is characterized in that
The adjustable conveying device of flow is rotary feeder, the variable-frequency motor company of the control system and the rotary feeder
It connects, the coal dust that the control system controls the rotary feeder by controlling the revolving speed of the variable-frequency motor exports speed
Rate；
It is provided with conveying wind aerator at the material outlet of the rotary feeder, is given with conveying the rotation using conveying gas
The coal dust of material machine discharge.
9. transportation system according to claim 5, which is characterized in that
It further include powder fluidized device, the powder fluidized device is respectively provided at normal pressure pulverized coal repository and the feedstock vessel
Lower part, for keeping the fluidized state of coal dust inside the two；The lower part of the normal pressure pulverized coal repository and the feedstock vessel is
Cone bucket.
10. transportation system according to claim 5, which is characterized in that further include:
Relief tube, one end are connect with the feedstock vessel, and the other end is connect with the normal pressure pulverized coal repository, are set on the relief tube
It is equipped with relief valve；
Bag filter is set to the top of the normal pressure pulverized coal repository；
The adjustable conveying device of flow is rotary feeder, the variable-frequency motor company of the control system and the rotary feeder
It connects, the coal dust that the control system controls the rotary feeder by controlling the revolving speed of the variable-frequency motor exports speed
Rate；
It is provided with conveying wind aerator at the material outlet of the rotary feeder, is given with conveying the rotation using conveying gas
The coal dust of material machine discharge.
11. transportation system according to claim 10, which is characterized in that further include:
High pressure tank, three branch lines of outlet setting, respectively fluidisation air pipe are filled for what is inflated to the feedstock vessel
The conveying air pipe on pressure pipe road and the coal dust for conveying the rotary feeder discharge, the fluidisation air pipe and the feed
The powder fluidized device of the lower part of tank connects；
Low pressure gasholder, two branch lines of outlet setting, a branch line are connect with the bag filter, another point
Bye-pass is connect with the powder fluidized device of normal pressure pulverized coal repository lower part.
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| Publication number | Priority date | Publication date | Assignee | Title |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108795503A (en) * | 2018-07-04 | 2018-11-13 | 安泰环境工程技术有限公司 | Pressurization of dry pulverized coal dense-phase transporting system and method |
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