CN203569049U - Pulverized coal pressurized dense phase transportation system suitable for dry pulverized coal gasification - Google Patents
Pulverized coal pressurized dense phase transportation system suitable for dry pulverized coal gasification Download PDFInfo
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- CN203569049U CN203569049U CN201320714693.1U CN201320714693U CN203569049U CN 203569049 U CN203569049 U CN 203569049U CN 201320714693 U CN201320714693 U CN 201320714693U CN 203569049 U CN203569049 U CN 203569049U
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- 239000003245 coal Substances 0.000 title claims abstract description 118
- 238000002309 gasification Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims description 54
- 239000002817 coal dust Substances 0.000 claims description 42
- 238000010926 purge Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 230000006837 decompression Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 7
- 241000273930 Brevoortia tyrannus Species 0.000 description 55
- 239000007789 gas Substances 0.000 description 38
- 238000000034 method Methods 0.000 description 12
- 238000007600 charging Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model provides a pulverized coal pressurized dense phase transportation system suitable for dry pulverized coal gasification. The pulverized coal pressurized dense phase transportation system comprises a coal bunker, locking hoppers and a dispatching tank, wherein the mounting positions of the three parts are declined; the lower part of the coal bunker comprises 1-6 first compartments; each first compartment is respectively connected with one locking hopper through a first coal discharging pipeline; a control valve is arranged on the first coal discharging pipeline; the lower part of the locking hopper and the upper part of the dispatching tank are connected through a second coal discharging pipeline; a control valve is arranged on the second coal discharging pipeline; the locking hoppers are respectively communicated with pressurization pipelines and pressure relief pipelines; the lower part of the dispatching tank comprises 1-10 second compartments; the second compartments are connected with a final pulverized coal conveying pipeline. The system provided by the utility model is simple in structure, high in pulverized coal conveying stability and safe, and long-period normal operation of the system is promoted.
Description
Technical field
The utility model relates to the dense-phase transporting system of powder material.
Background technology
Pressurization dry coal powder airflow bed gasification technology has the advantages such as coal optimum range is wide, higher than low, the effective gas productive rate of oxygen consumption, start-stop car is convenient, has been subject to Coal Chemical Industry industry and has paid close attention to greatly.Practice shows, in extensive coal dust pressurized gasification process, the charging process of dry pulverized coal and the device adopting directly affect life-span and the security of system of operational stability, vapourizing furnace.At present, published charging process and device are a lot, but these technology are really adopted and few in Coal Chemical Industry industry, and its major cause is that some technique is more complicated on the one hand, be while being used in extensive coal gasification on the other hand, it carries stability still uncertain.
Patent CN1376761A and CN1793290A need to adopt rotatory feeder valve control feeding coal, the key distinction is that the course of conveying of the latter's coal dust is to rely on rotatory feeder valve and carrier gas combination to work in coordination with, this e Foerderanlage with mechanical gyro units such as valve and screw feeders, is unfavorable for that the powder continous-stable under high pressure operating mode is carried; Patent CN201962257U coal dust sending cans are simple in structure, and discharge method is top discharge, but are only single tube discharging, meet multipath discharging, must build many cover delivery systems, make system very complicated, and cost is high; Patent CN2808837Y is multiple branch circuit top discharge mode, but is provided with the equipment such as loosening device, powder snubber and powder distributor in the bottom in pressurization storehouse, and technique is very complicated; The coal-feeding device of GSP pressurized air flow bed technique is multiple branch circuit top discharge mode, system architecture is more simple in structure than patent CN2808837Y's, but needs to add an agitator in its bottom, in actual motion, agitator easily breaks down, and affects the long-period stable operation of device.
Utility model content
The purpose of this utility model is to provide the pressurization of dry pulverized coal delivery system that a kind of technique is simple, carry the multitube discharging of good stability.
For achieving the above object, the utility model has been taked following technical scheme:
The coal dust pressurization dense-phase transporting system that is applicable to dry coal powder gasification that the utility model provides comprises coal bunker, lock hopper and issuance of materials tank, the installation site of described coal bunker is higher than the installation site of described lock hopper, and the installation site of described lock hopper is higher than the installation site of described issuance of materials tank.The bottom of described coal bunker comprises 1-6 the first compartment (for example 5 the first compartments), described in each, the first compartment is connected by the first coal unloading tube road with a described lock hopper respectively, and described the first coal unloading tube road is provided with controls the first control valve that described the first compartment is communicated with described lock hopper and disconnect.Between described lock hopper bottom and described issuance of materials tank top, by the second coal unloading tube road, be connected, described the second coal unloading tube road is provided with controls the second control valve that described lock hopper is communicated with described issuance of materials tank and disconnect, described lock hopper is communicated with pressurising pipeline and relief pipeline respectively, and described relief pipeline is connected to described coal bunker.Described issuance of materials tank bottom comprises 1-10 the second compartment (for example 2,3,4,5,6,7,8 or 9 the second compartments), and described the second compartment is connected with whole power transportation pipe.
Preferably, at described top of coal bunker, be provided with the strainer for the gas that flows out described coal bunker is filtered, described strainer connects purging pipeline, and described purging pipeline is for purging described strainer.After filtering by strainer, can obviously reduce to discharge dust from coal bunker, reduce environmental pollution; In addition, before coal dust pressurization dense-phase transporting system of the present utility model is driven, need coal bunker to carry out nitrogen replacement, the gas displacing is also discharged by strainer.
Preferably, described coal dust pressurization dense-phase transporting system comprises for the depressurized system to gas decompression, described relief pipeline comprises initial relief pipeline and final relief pipeline, described initial relief pipeline is connected by described depressurized system described lock hopper with described coal bunker, described final relief pipeline is connected described lock hopper with described coal bunker.
Preferably, described pressurising pipeline comprises pressurized gas pipeline and lower pressurized gas pipeline, and described upper pressurized gas pipeline is connected to the top of described lock hopper, and described lower pressurized gas pipeline is connected to the bottom of described lock hopper.From lock hopper upper and lower, pass into respectively pressurized gas necessary, if only set out on a journey gas, coal dust can be compressed, make lock hopper blanking not smooth, very trouble; If Jin Youxia road gas, can make coal dust fly upward, detect to lock hopper material level and bring impact.In actually operating, technician need to, for different lock hoppers and the concrete analysis of coal dust situation, design the rational ratio of the gas of road up and down passing into, and makes it possible to obtain a desirable balance in the problem of above-mentioned two kinds of angles.
Further preferably, described upper pressurized gas pipeline and described lower pressurized gas pipeline are divided into 2-5 branch road, for example 3 or 4 branch roads.In actual applications, because device volume is larger, establish several branch roads more and can make the fluid effect of coal dust better.
Preferably, the top of described coal bunker is connected respectively coal bunker upper air pipeline and coal bunker lower inlet duct road with described the first compartment place.The coal bunker lower inlet duct road that described the first compartment place connects can make coal dust in fluidized state, and the coal bunker upper air pipeline that top connects can, in the consideration for security standpoint, pass into rare gas element in the time of need to carrying out gas displacement to described coal bunker.
Preferably, the quantity of described the first control valve arranging on described the first coal unloading tube road is 2-4 (for example 3), mode of connection is series connection, and the quantity of described the second control valve arranging on described the second coal unloading tube road is 2-4 (for example 3), and mode of connection is series connection.
Preferably, between described lock hopper top and described issuance of materials tank top, be provided with pressure-equalizing passageway, described pressure-equalizing passageway is provided with the 3rd control valve.Because lock hopper need to just can move closer to the pressure in issuance of materials tank through pressurization, the 3rd control valve of now opening on pressure-equalizing passageway makes lock hopper equate with the pressure in issuance of materials tank, and the coal dust in lock hopper could rely on gravity to slip in issuance of materials tank along the second coal unloading tube road like this.After the coal dust in lock hopper is all fallen into issuance of materials tank, the 3rd control valve on pressure-equalizing passageway to be closed, cut-out lock hopper is connected with issuance of materials tank, so that follow-up, only lock hopper is carried out to pressure release.
Preferably, described coal bunker bottom is provided with 2,3 or 4 described the first compartments, and the top of described issuance of materials tank and described the second compartment place are connected with respectively issuance of materials tank upper air pipeline and issuance of materials tank lower inlet duct road.The rare gas element passing into from issuance of materials tank upper air pipeline, for to issuance of materials tank pressurization, maintains tank internal pressure, and the rare gas element passing into from issuance of materials tank lower inlet duct road is for carrying out fluidisation to coal dust, and the coal dust that makes to flow into whole power transportation pipe is even, carries stable.
Preferably, on described coal bunker, lock hopper, issuance of materials tank, be respectively equipped with level gage, and described level gage is respectively equipped with 2-5 on the vertical direction of described coal bunker, lock hopper and issuance of materials tank, for example 3 or 4, can more accurately monitor like this coal dust amount in coal bunker, lock hopper and issuance of materials tank.
Coal dust pressurization dense-phase transporting system of the present utility model need to be by moving equipment such as screw feeder, transferpump, loosening device, agitators, only depend on the design of apparatus and process just to realize on a large scale, have more material operation, have the advantages such as technique is simple, pulverized coal conveying good stability, safety, the long period that is conducive to system is normally moved.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of coal dust pressurization dense-phase transporting system of the present utility model.
Reference numeral in Fig. 1 is: purge pipeline 1.; 2. strainer; 3. coal bunker; 4. level gage; 5. the first compartment; 6. coal bunker upper air pipeline; 7. coal bunker lower inlet duct road; 8. the final relief pipeline of other lock hoppers; 9. final relief pipeline; 10. control valve on coal bunker; Control valve under 11. coal bunkers; 12. connect the coal unloading tube road of other lock hoppers; 13. initial relief pipelines; 14. issuance of materials tank upper air pipelines; 15. pressure-equalizing passagewaies; 16. issuance of materials tank lower inlet duct roads; 17. lock hoppers; Control valve in 18. lock hoppers; Control valve under 19. lock hoppers; 20. other lock hopper coal unloading tube roads; 21. issuance of materials tanks; 22. second compartments; 23. whole power transportation pipes.
Embodiment
Below in conjunction with accompanying drawing, a preferred embodiment of the present utility model is described in detail.
Coal dust pressurization dense-phase transporting system adopts bottom discharge mode, coal bunker 3, lock hopper 17 and issuance of materials tank 21 positions are from high to low, coal bunker 3 bottoms are provided with 4 the first compartments 5, the bottom of each the first compartment 5 is connected with the top of a lock hopper 17 by the first coal unloading tube road respectively, on the second coal unloading tube road between the first compartment 5 and lock hopper 17, series connection arranges on coal bunker control valve 11 under control valve 10 and coal bunker, lock hopper 17 bottoms are connected with issuance of materials tank 21 tops by the second coal unloading tube road, connect control valve 19 under control valve 18 and lock hopper is set in lock hopper on the second coal unloading tube road.Issuance of materials tank 21 bottoms are provided with three the second compartments 22, and each the second compartment 22 connects a whole power transportation pipe 23, and the coal dust that processing treatment is good is sent to gasifier nozzle.
In Fig. 1
represent to pass into rare gas element, as nitrogen.On coal bunker 3 tops, be provided with strainer 2, strainer 2 is dual flow filter, and when clean rare gas element flows into from purging pipeline 1, rare gas element can purge strainer 2, prevents that strainer 2 from stopping up; When flowing into coal bunker 3 from the post-decompression gas of lock hopper 17, the unnecessary gas in coal bunker 3 can flow out coal bunker 3 after filter 2 filters, and has prevented that like this coal dust is excessive, has reduced pollution, has maintained the normal pressure in coal bunker 3 simultaneously.
Rare gas element flows into respectively top and first compartment 5 places of coal bunker 3 through coal bunker upper air pipeline 6 and coal bunker lower inlet duct road 7.The top of coal bunker 3 is provided with 2 level gages 4 in vertical direction, is provided with a level gage 4 on the first compartment 5, for monitoring the coal charge content in coal bunker 3.
Issuance of materials tank upper air pipeline 14 and issuance of materials tank lower inlet duct road 16 are established in top and the second compartment 22 punishment at issuance of materials tank 21, and wherein issuance of materials tank lower inlet duct road 16 is divided into 3 branch roads.Set temperature meter, pressure warning unit and level gage in issuance of materials tank 21.
The final relief pipeline that the final relief pipeline 8 of other lock hoppers refers to unshowned multiple lock hoppers 17 are connected in Fig. 1, the second coal unloading tube road that other lock hopper coal unloading tube roads 20 refer to unshowned multiple lock hoppers 17 are connected in Fig. 1.
The working method of coal dust pressurization dense-phase transporting system of the present utility model is as follows: the coal dust (certain particle size distribution, moisture content and temperature) of making applicable coal for gasification through coal-grinding unit is transported to coal bunker 3, as level gage 4 shows that coal bunker 3 material levels are full, stop to coal bunker 3 chargings, now as an example of a circulation example, describe.(1) lock hopper 17 is normal pressure, open all valves on final relief pipeline 9, make from coal bunker 3, during lock hopper 17 chargings, keeping connected state between coal bunker 3 and lock hopper 17, then first open control valve 11 under coal bunker, after open other control valve that on coal bunker, control valve 10(is connected with lock hopper 17 in closing condition), coal dust in coal bunker 3 enters into lock hopper 17 by coal unloading tube road under action of gravity, when lock hopper 17 material levels show completely, stop charging, all connections of closing between coal bunker 3 and lock hopper 17 (are first closed control valve 10 on coal bunker, after close control valve 11 under coal bunker, final relief pipeline 9 also needs to close).(2) upper pressurized gas pipeline and the lower pressurized gas pipeline of opening lock hopper 17 carry out pressurising to lock hopper 17, during pressurising, control upper and lower road gas flow, make to the coal dust pressurization in lock hopper 17, still to guarantee that again coal dust, in fluidized state, is unlikely to press too tightly.(3) when lock hopper 17 pressure reach with issuance of materials tank 21 pressure when identical, open the control valve on the pressure-equalizing passageway 15 that lock hopper 17 is connected with issuance of materials tank 21, first open control valve 19 under lock hopper, open again control valve 18 in lock hopper, after the coal dust in lock hopper 17 enters issuance of materials tank 21 completely, the control valve on pressurized gas pipeline and lower pressurized gas pipeline is closed in pass, closes all connections of lock hopper 17 and issuance of materials tank 21.(4) first open initial relief pipeline 13 lock hopper 17 is carried out to initial pressure release, when approaching normal pressure, lock hopper 17 internal pressures close initial relief pipeline 13, open final relief pipeline 9 lock hopper 17 is carried out to final pressure release, when lock hopper 17 pressure releases finish, lock hopper 17, in waiting for the operating mode that connects material, so far completes a cyclical operation.Coal dust in issuance of materials tank 21 is sent to gasifier nozzle along whole power transportation pipe 23 and carries out subsequent disposal.
Above-described embodiment is only for illustration of the utility model; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; in the situation that not departing from the utility model spirit and scope; can also make a variety of changes and modification; therefore all technical schemes that are equal to also should belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (10)
1. one kind is applicable to the coal dust pressurization dense-phase transporting system of dry coal powder gasification, it is characterized in that, described coal dust pressurization dense-phase transporting system comprises coal bunker, lock hopper and issuance of materials tank, the installation site of described coal bunker is higher than the installation site of described lock hopper, and the installation site of described lock hopper is higher than the installation site of described issuance of materials tank;
The bottom of described coal bunker comprises 1-6 the first compartment, described in each, the first compartment is connected by the first coal unloading tube road with a described lock hopper respectively, and described the first coal unloading tube road is provided with controls the first control valve that described the first compartment is communicated with described lock hopper and disconnect;
Between described lock hopper bottom and described issuance of materials tank top, by the second coal unloading tube road, be connected, described the second coal unloading tube road is provided with controls the second control valve that described lock hopper is communicated with described issuance of materials tank and disconnect, described lock hopper is communicated with pressurising pipeline and relief pipeline respectively, and described relief pipeline is connected to described coal bunker;
Described issuance of materials tank bottom comprises 1-10 the second compartment, and described the second compartment is connected with whole power transportation pipe.
2. coal dust pressurization dense-phase transporting system according to claim 1, it is characterized in that, at described top of coal bunker, be provided with the strainer for the gas that flows out described coal bunker is filtered, described strainer connects purging pipeline, and described purging pipeline is for purging described strainer.
3. coal dust pressurization dense-phase transporting system according to claim 1 and 2, it is characterized in that, described coal dust pressurization dense-phase transporting system comprises for the depressurized system to gas decompression, described relief pipeline comprises initial relief pipeline and final relief pipeline, described initial relief pipeline is connected by described depressurized system described lock hopper with described coal bunker, described final relief pipeline is connected described lock hopper with described coal bunker.
4. coal dust pressurization dense-phase transporting system according to claim 1, it is characterized in that, described pressurising pipeline comprises pressurized gas pipeline and lower pressurized gas pipeline, and described upper pressurized gas pipeline is connected to the top of described lock hopper, and described lower pressurized gas pipeline is connected to the bottom of described lock hopper.
5. coal dust pressurization dense-phase transporting system according to claim 4, is characterized in that, described upper pressurized gas pipeline and described lower pressurized gas pipeline are divided into 2-5 branch road.
6. according to the coal dust pressurization dense-phase transporting system described in claim 4 or 5, it is characterized in that, the top of described coal bunker is connected respectively coal bunker upper air pipeline and coal bunker lower inlet duct road with described the first compartment place.
7. coal dust pressurization dense-phase transporting system according to claim 1, it is characterized in that, the quantity of described the first control valve arranging on described the first coal unloading tube road is 2-4, mode of connection is series connection, the quantity of described the second control valve arranging on described the second coal unloading tube road is 2-4, and mode of connection is series connection.
8. according to the coal dust pressurization dense-phase transporting system described in claim 1 or 7, it is characterized in that, between described lock hopper top and described issuance of materials tank top, be provided with pressure-equalizing passageway, described pressure-equalizing passageway is provided with the 3rd control valve.
9. coal dust pressurization dense-phase transporting system according to claim 1, it is characterized in that, described coal bunker bottom is provided with 2,3 or 4 described the first compartments, and the top of described issuance of materials tank and described the second compartment place are connected with respectively issuance of materials tank upper air pipeline and issuance of materials tank lower inlet duct road.
10. coal dust pressurization dense-phase transporting system according to claim 1, it is characterized in that, on described coal bunker, lock hopper, issuance of materials tank, be respectively equipped with level gage, and described level gage is respectively equipped with 2-5 on the vertical direction of described coal bunker, lock hopper and issuance of materials tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320714693.1U CN203569049U (en) | 2013-11-14 | 2013-11-14 | Pulverized coal pressurized dense phase transportation system suitable for dry pulverized coal gasification |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320714693.1U CN203569049U (en) | 2013-11-14 | 2013-11-14 | Pulverized coal pressurized dense phase transportation system suitable for dry pulverized coal gasification |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690687A (en) * | 2012-06-18 | 2012-09-26 | 天津渤海化工有限责任公司天津碱厂 | Improved coal dust conveying method |
| CN104194839A (en) * | 2014-09-01 | 2014-12-10 | 中科合成油工程有限公司 | Method for delivering powdered coal to pressurized gasification furnace in pressurized manner |
| CN105042614A (en) * | 2015-07-31 | 2015-11-11 | 北京神雾环境能源科技集团股份有限公司 | Feeding device and furnace atmosphere isolating method thereof |
| CN107284883A (en) * | 2017-07-19 | 2017-10-24 | 陕西延长石油（集团）有限责任公司 | A kind of batch (-type) lock hopper pressurization pulverized coal conveying device and carrying method |
| CN115466634A (en) * | 2022-10-19 | 2022-12-13 | 国家能源集团宁夏煤业有限责任公司 | Coal powder lock hopper |
-
2013
- 2013-11-14 CN CN201320714693.1U patent/CN203569049U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690687A (en) * | 2012-06-18 | 2012-09-26 | 天津渤海化工有限责任公司天津碱厂 | Improved coal dust conveying method |
| CN102690687B (en) * | 2012-06-18 | 2016-12-21 | 天津渤海化工有限责任公司天津碱厂 | A kind of coal dust carrying method of improvement |
| CN104194839A (en) * | 2014-09-01 | 2014-12-10 | 中科合成油工程有限公司 | Method for delivering powdered coal to pressurized gasification furnace in pressurized manner |
| CN105042614A (en) * | 2015-07-31 | 2015-11-11 | 北京神雾环境能源科技集团股份有限公司 | Feeding device and furnace atmosphere isolating method thereof |
| CN105042614B (en) * | 2015-07-31 | 2018-04-20 | 神雾科技集团股份有限公司 | Feeding device and its method for completely cutting off furnace atmosphere |
| CN107284883A (en) * | 2017-07-19 | 2017-10-24 | 陕西延长石油（集团）有限责任公司 | A kind of batch (-type) lock hopper pressurization pulverized coal conveying device and carrying method |
| CN107284883B (en) * | 2017-07-19 | 2024-01-23 | 陕西延长石油（集团）有限责任公司 | Intermittent lock hopper pressurized pulverized coal conveying device and conveying method |
| CN115466634A (en) * | 2022-10-19 | 2022-12-13 | 国家能源集团宁夏煤业有限责任公司 | Coal powder lock hopper |
| CN115466634B (en) * | 2022-10-19 | 2024-02-27 | 国家能源集团宁夏煤业有限责任公司 | Pulverized coal lock bucket |
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