CN204619935U - Gas-phase fluidized-bed reaction system and dry powder catalyst vibration charging system thereof - Google Patents
Gas-phase fluidized-bed reaction system and dry powder catalyst vibration charging system thereof Download PDFInfo
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- CN204619935U CN204619935U CN201520260796.4U CN201520260796U CN204619935U CN 204619935 U CN204619935 U CN 204619935U CN 201520260796 U CN201520260796 U CN 201520260796U CN 204619935 U CN204619935 U CN 204619935U
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- dry powder
- powder catalyst
- gas
- charging system
- phase fluidized
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- 239000003054 catalyst Substances 0.000 title claims abstract description 145
- 239000000843 powder Substances 0.000 title claims abstract description 100
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 230000009467 reduction Effects 0.000 claims abstract description 13
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 claims description 17
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 11
- 230000015572 biosynthetic process Effects 0.000 abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 239000007789 gas Substances 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003350 kerosene Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000003872 feeding technique Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model discloses a kind of gas-phase fluidized-bed reaction system and dry powder catalyst vibration charging system thereof, and dry powder catalyst vibration charging system comprises: a dry powder catalyst feeder; One weigher, is arranged at this dry powder catalyst feeder bottom and is connected with this dry powder catalyst feeder; One pressure reduction Remote monitoring unit, is connected to this dry powder catalyst feeder; One oscillating unit, is connected to this dry powder catalyst feeder.Gas-phase fluidized-bed reaction system of the present utility model and dry powder catalyst vibration charging system thereof, dry powder catalyst can be solved in blanking process, occur the phenomenons such as bridge formation, spike, cause catalyst blanking to have some setbacks, cause the problem that the actual addition of dry powder catalyst is not inconsistent with plan addition.
Description
Technical field
The utility model relates to a kind of dry powder catalyst vibration charging system, particularly relates to a kind of dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor.
Background technology
At present, the dry powder catalyst charge of gas-phase fluidized-bed reactor adopts metering disc feeder usually, its metering disk comprises movable grinding disc and static cutting disk, dish all there is the pore of some, keep metering disk two-way pressure balance by high pressure nitrogen, when the movable grinding disc of metering disk rotate to be connected with the pore on static cutting disk position time, catalyst is by self gravitation effect, complete blanking process through pore free-falling, then send in reactor via supplying nitrogen.Around here, the dry powder catalyst that mobility is relatively poor, viscosity is relatively large, easily sticks to the blanking hole place of feeder, forms the phenomenons such as bridge formation, spike, causes catalyst blanking to have some setbacks, and causes the actual addition of dry powder catalyst not to be inconsistent with plan addition.There is error in the addition of catalyst, directly can have influence on operating personnel to the judgement of device reaction state and overall control, and then affect the overall operation of device, therefore ensure that the accurate input of catalyst is significant.
Chinese patent CN 102049217 A, for this problem, improves the structure of catalyst feeder, adds nitrogen distributor, conical flow guiding body and loosening gas distributor.Nitrogen distributor is to nitrogen injection in catalyst filling tank, for brushing the catalyst of whereabouts, realize the separation of catalyst dust, loosen gas distributor and pass into high pressure hydrogen, solid catalyst particle is made to have mobility, high pressure hydrogen impacts layer of catalyst particles simultaneously, makes its avalanche, realizes continuous feed.
Chinese patent CN 102993342 A adds pans between catalyst storage tank and reactor, pans entrance composition loop is caused at pans outlet connection pipeline, loop maintains the mobility of catalyst granules by blower fan, the connecting line of pans and rear system is arranged one group of magnetic valve, certain buret is established between two magnetic valves, for accurate charging, and a gas purging pipeline is set before quantity tube, prevents blocking.
Describe in Chinese patent CN 203710987 U, for preventing after the reinforced easily blocking of catalyst and blocking the not problem such as easy to clean, defeated wind pushing nozzle and conveying wind control valve has been arranged in catalyst conveying device, conveying wind size and transporting velocity is controlled by the aperture of conveying wind control valve, conveying wind forms motive force through nozzle to catalyst, prevents blocking with this.
The many mobility being increased catalyst by blast system of above patented technology, for catalyst, at blanking hole place, accumulation has preventive effect to technology in Chinese patent CN 102049217 A, but the blocking caused due to catalyst bonding hole wall at catalyst feeder blanking hole place does not have process effect equally, and prior art there is no effective treating method.
Therefore, how to design a kind of dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor, make it can solve defect existing in existing catalyst feeding technique, namely become those skilled in the art's problem demanding prompt solution.
Utility model content
The purpose of this utility model is to provide a kind of gas-phase fluidized-bed reaction system and dry powder catalyst vibration charging system thereof, solve dry powder catalyst and occur the phenomenons such as bridge formation, spike in blanking process, cause catalyst blanking to have some setbacks, cause the problem that the actual addition of dry powder catalyst is not inconsistent with plan addition.
For achieving the above object, the utility model provides a kind of dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor, comprising:
One dry powder catalyst feeder;
One weigher, is arranged at this dry powder catalyst feeder bottom and is connected with this dry powder catalyst feeder;
One pressure reduction Remote monitoring unit, is connected to this dry powder catalyst feeder;
One oscillating unit, is connected to this dry powder catalyst feeder.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this pressure reduction Remote monitoring unit comprises a pressure difference transmitter and a DCS watch-dog (DCS and dcs, Distributed Control System).
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this dry powder catalyst feeder is connected with this pressure difference transmitter, and this pressure difference transmitter is connected with this DCS watch-dog.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this oscillating unit comprises an oscillator, an oscillator signal Drazin inverse element and a gauge tap.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this dry powder catalyst feeder is connected with this oscillator, this oscillator is connected with this oscillator signal Drazin inverse element, and this oscillator signal Drazin inverse element is connected with this gauge tap.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this oscillating unit is pneumatic control oscillating unit or Electronic control oscillating unit, that is, the vibrational control mode of this oscillating unit comprises pneumatic vibrational control and electronic vibrational control.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this oscillating unit is rule vibration shape oscillating unit or hunting shape oscillating unit, that is, the oscillation form of this oscillating unit comprises rule vibration and hunting.
For achieving the above object, the utility model also provides a kind of gas-phase fluidized-bed reaction system, comprises aforesaid dry powder catalyst vibration charging system.
Below in pneumatic vibrational control mode, the oscillating unit mode of action of the present utility model is described:
When this oscillating unit is pneumatic control oscillating unit, the oscillator of oscillating unit, oscillator signal Drazin inverse element and gauge tap are respectively pneumatic oscillator, level pressure instrument and magnetic valve.
Oscillating unit is opened by solenoid control, instrument wind acts on pneumatic oscillator after level pressure instrument level pressure, and can be regulated instrument wind pressure by level pressure instrument according to specific needs, thus control frequency of oscillation and the vibration dynamics of pneumatic oscillator, can effectively prevent catalyst in blanking process, occur bridge formation, spike phenomenon.Whole system is easy and simple to handle, effective and rapid, and Long-distance Control also can prevent to occur the phenomenons such as valve that stagger during on-the-spot manual operation.
Compared with prior art, details are as follows for the accessible remarkable technique effect of the utility model and principle:
1) dry powder catalyst feeder of the present utility model is with pressure reduction Remote monitoring unit, monitors dry powder catalyst feeder inside and outside differential pressure, observes pressure-difference fluctuation scope, judges that whether dry powder catalyst blanking state is smooth and easy.
2) dry powder catalyst feeder bottom of the present utility model is provided with high-precision measuring scale, carries out timing metering, accurate Calculation dry powder catalyst charge amount to dry powder catalyst feeder.
3) comprehensive above-mentioned 2 points, in conjunction with pressure reduction remote control system and high-precision measuring scale two kinds of monitoring means, the utility model accurately can judge the blanking situation of dry powder catalyst feeder.
4) oscillating unit of the present utility model is controlled to open by gauge tap, vibration power source acts on oscillator after oscillator signal Drazin inverse element regulation, dry powder catalyst feeder is vibrated, prevents catalyst in blanking process, occur bridge formation, spike phenomenon with this.
5) thus, what the utility model can be effective prevents catalyst from blanking process, occurring the phenomenons such as bridge formation, spike, ensures that catalyst blanking is smooth and easy, and precisely, the actual addition of dry powder catalyst conforms to plan addition in metering.
6) simultaneously, it is simple that the utility model also has structure, the advantages such as cost is low, easy to operate.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.
Accompanying drawing explanation
Fig. 1 is the dry powder catalyst vibration charging system schematic diagram of gas-phase fluidized-bed reactor of the present utility model;
Fig. 2 is the oscillating unit schematic diagram of dry powder catalyst vibration charging system when vibrational control mode is pneumatic control of gas-phase fluidized-bed reactor of the present utility model;
Fig. 3 is effect schematic flow sheet of the present utility model;
Wherein, Reference numeral:
1: high pressure gas line
2: pressure reduction Remote monitoring unit
3: pressure difference transmitter
4:DCS watch-dog
5: dry powder catalyst feeder
6: high-precision measuring scale
7: oscillating unit
8: oscillator
9: oscillator signal Drazin inverse element
10: gauge tap
11: instrument wind line
12: catalyst charge line
13: low pressure gas line
14: drop out line
15: catalyst adds stockline
16: catalyst unloads stockline
17: kerosene hermetically sealed can
18: drop out line
19: pressure-reducing valve
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical solution of the utility model is described in detail, but the use that illustrated embodiment only explains, not as the restriction to the utility model protection domain.
Please refer to Fig. 1 to Fig. 3, in blanking process, there is the phenomenons such as bridge formation, spike for solving dry powder catalyst, catalyst blanking is caused to have some setbacks, cause the problem that the actual addition of dry powder catalyst is not inconsistent with plan addition, the utility model provides a kind of dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor, comprising:
One dry powder catalyst feeder 5;
One weigher 6, is arranged at this dry powder catalyst feeder 5 bottom and is connected with this dry powder catalyst feeder 5; And described weigher 6 is high-precision measuring scale;
One pressure reduction Remote monitoring unit 2, is connected to this dry powder catalyst feeder 5;
One oscillating unit 7, is connected to this dry powder catalyst feeder 5.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this pressure reduction Remote monitoring unit 2 comprises pressure difference transmitter 3 and a DCS watch-dog 4.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this dry powder catalyst feeder 5 is connected with this pressure difference transmitter 3, and this pressure difference transmitter 3 is connected with this DCS watch-dog 4.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this oscillating unit 7 comprises oscillator 8, oscillator signal Drazin inverse element 9 and a gauge tap 10.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this dry powder catalyst feeder 5 is connected with this oscillator 8, this oscillator 8 is connected with this oscillator signal Drazin inverse element 9, and this oscillator signal Drazin inverse element 9 is connected with this gauge tap 10.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this oscillating unit 9 is pneumatic control oscillating unit or Electronic control oscillating unit, that is, the vibrational control mode of this oscillating unit 9 comprises pneumatic vibrational control and electronic vibrational control.
Wherein, in dry powder catalyst vibration charging system one better embodiment of gas-phase fluidized-bed reactor of the present utility model, this oscillating unit 9 is rule vibration shape oscillating unit or hunting shape oscillating unit, that is, the oscillation form of this oscillating unit 9 comprises rule vibration and hunting.
The utility model also provides a kind of gas-phase fluidized-bed reaction system, comprises aforesaid dry powder catalyst vibration charging system.
Please refer to Fig. 2, below in pneumatic vibrational control mode, single 7 modes of action of vibration of the present utility model be described:
When this oscillating unit 7 is for pneumatic control oscillating unit, the oscillator 8 of oscillating unit 7, oscillator signal Drazin inverse element 9 and gauge tap 10 are respectively pneumatic oscillator, level pressure instrument and magnetic valve.
Oscillating unit 7 is controlled to open by magnetic valve (gauge tap 10), instrument wind acts on pneumatic oscillator (oscillator 8) after level pressure instrument (oscillator signal Drazin inverse element 9) level pressure, and can be regulated instrument wind pressure by level pressure instrument according to specific needs, thus control frequency of oscillation and the vibration dynamics of pneumatic oscillator, can effectively prevent catalyst in blanking process, occur bridge formation, spike phenomenon.Whole system is easy and simple to handle, effective and rapid, and Long-distance Control also can prevent to occur the phenomenons such as valve that stagger during on-the-spot manual operation.
Refer again to Fig. 3, below in pneumatic vibrational control mode, mass action mode of the present utility model be described:
When this oscillating unit 7 is for pneumatic control oscillating unit, the oscillator 8 of oscillating unit 7, oscillator signal Drazin inverse element 9 and gauge tap 10 are respectively pneumatic oscillator, level pressure instrument and magnetic valve.
Dry powder catalyst feeder 5 before the addition of the catalyst, first by low pressure gas line 13, (pressure of " low pressure gas line " is for being less than 0.7MPa, usually at about 0.6MPa) in dry powder catalyst feeder 5, pass into low pressure purified nitrogen, unload stockline 16 through catalyst, kerosene hermetically sealed can 17, drop out line 18 discharge, carry out force-displacement and flowing displacement, after purity in dry powder catalyst feeder 5 touches the mark requirement, add stockline 15 by catalyst and add catalyst in dry powder catalyst feeder 5, pressurize is stand-by.
Device carries out suitability for industrialized production, when starting to come into operation dry powder catalyst vibration charging system, by high pressure gas line 1, (pressure of " high pressure gas line " is higher than reactor pressure about 0.5MPa, so that by catalyst transport in reactor, and reactor pressure is determined by the product needed of producing, usually be arranged within the scope of 2.3-2.8MPa) introduce high pressure nitrogen, after pressure-reducing valve 19 setting pressure (usual pressure is reactor pressure height 0.3-0.5MPa comparatively), enter dry powder catalyst feeder 5 and catalyst charge line 12 respectively, guarantee dry powder catalyst feeder 5 internal and external pressure balance, catalyst blanking under self gravitation effect, then send in reactor under high pressure nitrogen conveying.Open magnetic valve (gauge tap 10), start controllable oscillatory unit 7, instrument wind is introduced through instrument wind line 11, after level pressure instrument (oscillator signal Drazin inverse element 9) level pressure, act on pneumatic oscillator (oscillator 8), complete the pulsative oscillation to dry powder catalyst feeder.Under the monitoring of high-precision measuring scale 6 (weigher of the present utility model is high-precision measuring scale, and described high-precision measuring scale belongs to a kilogram scale, be accurate to after decimal point 4) and pressure reduction Remote monitoring unit 2, observe the blanking stationarity of catalyst.Depending on the circumstances or the needs of the situation by level pressure instrument regulation meter wind pressure size, control frequency of oscillation and the vibration dynamics of pneumatic oscillator.
After device suitability for industrialized production terminates, dry powder catalyst feeder 5 carries out pressure release through drop out line 14, and treat that Pressure Drop is to 0.6MPa, pressurize is stand-by.As catalyst need change or when draining, pass into low pressure purified nitrogen by low pressure gas line 13 and purge, catalyst is unloaded stockline 16 through catalyst and is blown into kerosene hermetically sealed can 17, sweep gas is through drop out line 18 emptying.After catalyst discharging completes, dry powder catalyst feeder 5 passes into low pressure purified nitrogen by low pressure gas line 13 and carries out purging displacement, or pressurize is stand-by.
Compared with prior art, details are as follows for the accessible remarkable technique effect of the utility model and principle:
1) dry powder catalyst feeder of the present utility model is with pressure reduction Remote monitoring unit, monitors dry powder catalyst feeder inside and outside differential pressure, observes pressure-difference fluctuation scope, judges that whether dry powder catalyst blanking state is smooth and easy.
2) dry powder catalyst feeder bottom of the present utility model is provided with high-precision measuring scale, carries out timing metering, accurate Calculation dry powder catalyst charge amount to dry powder catalyst feeder.
3) comprehensive above-mentioned 2 points, in conjunction with pressure reduction remote control system and high-precision measuring scale two kinds of monitoring means, the utility model accurately can judge the blanking situation of dry powder catalyst feeder.
4) oscillating unit of the present utility model is controlled to open by gauge tap, vibration power source acts on oscillator after oscillator signal Drazin inverse element regulation, dry powder catalyst feeder is vibrated, prevents catalyst in blanking process, occur bridge formation, spike phenomenon with this.
5) thus, what the utility model can be effective prevents catalyst from blanking process, occurring the phenomenons such as bridge formation, spike, ensures that catalyst blanking is smooth and easy, and precisely, the actual addition of dry powder catalyst conforms to plan addition in metering.
6) simultaneously, it is simple that the utility model also has structure, the advantages such as cost is low, easy to operate.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the utility model claim.
Claims (9)
1. a dry powder catalyst vibration charging system for gas-phase fluidized-bed reactor, is characterized in that, comprising:
One dry powder catalyst feeder;
One weigher, is arranged at this dry powder catalyst feeder bottom and is connected with this dry powder catalyst feeder;
One pressure reduction Remote monitoring unit, is connected to this dry powder catalyst feeder; And
One oscillating unit, is connected to this dry powder catalyst feeder.
2. the dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor according to claim 1, it is characterized in that, this pressure reduction Remote monitoring unit comprises a pressure difference transmitter and a DCS watch-dog.
3. the dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor according to claim 2, it is characterized in that, this dry powder catalyst feeder is connected with this pressure difference transmitter, and this pressure difference transmitter is connected with this DCS watch-dog.
4. the dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor according to claim 1, it is characterized in that, this oscillating unit comprises an oscillator, an oscillator signal Drazin inverse element and a gauge tap.
5. the dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor according to claim 4, it is characterized in that, this dry powder catalyst feeder is connected with this oscillator, this oscillator is connected with this oscillator signal Drazin inverse element, and this oscillator signal Drazin inverse element is connected with this gauge tap.
6. the dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor according to claim 1, it is characterized in that, this oscillating unit is pneumatic control oscillating unit or Electronic control oscillating unit.
7. the dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor according to claim 5, it is characterized in that, this oscillating unit is pneumatic control oscillating unit or Electronic control oscillating unit.
8. the dry powder catalyst vibration charging system of gas-phase fluidized-bed reactor according to claim 1, is characterized in that, this oscillating unit is rule vibration shape oscillating unit or hunting shape oscillating unit.
9. a gas-phase fluidized-bed reaction system, is characterized in that, comprises the dry powder catalyst vibration charging system in claim 1-8 described in any one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520260796.4U CN204619935U (en) | 2015-04-27 | 2015-04-27 | Gas-phase fluidized-bed reaction system and dry powder catalyst vibration charging system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520260796.4U CN204619935U (en) | 2015-04-27 | 2015-04-27 | Gas-phase fluidized-bed reaction system and dry powder catalyst vibration charging system thereof |
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| CN204619935U true CN204619935U (en) | 2015-09-09 |
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|---|---|---|---|
| CN201520260796.4U Expired - Fee Related CN204619935U (en) | 2015-04-27 | 2015-04-27 | Gas-phase fluidized-bed reaction system and dry powder catalyst vibration charging system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190100265A (en) * | 2016-12-23 | 2019-08-28 | 차이나 페트로리움 앤드 케미컬 코포레이션 | Pressure drop control system and pressure drop control method for feed distributor in fluidized bed reactor |
-
2015
- 2015-04-27 CN CN201520260796.4U patent/CN204619935U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190100265A (en) * | 2016-12-23 | 2019-08-28 | 차이나 페트로리움 앤드 케미컬 코포레이션 | Pressure drop control system and pressure drop control method for feed distributor in fluidized bed reactor |
| EP3561471A4 (en) * | 2016-12-23 | 2020-07-01 | China Petroleum & Chemical Corporation | Pressure drop control system and control method of feed distributor of a fluidized bed reactor |
| KR102453080B1 (en) * | 2016-12-23 | 2022-10-07 | 차이나 페트로리움 앤드 케미컬 코포레이션 | Pressure drop control system and pressure drop control method for feed distributor of fluidized bed reactor |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 |
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| CF01 | Termination of patent right due to non-payment of annual fee |