CN106586570B - Face the system and method that dust is unloaded under hydrogen environment - Google Patents
Face the system and method that dust is unloaded under hydrogen environment Download PDFInfo
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- CN106586570B CN106586570B CN201510661815.9A CN201510661815A CN106586570B CN 106586570 B CN106586570 B CN 106586570B CN 201510661815 A CN201510661815 A CN 201510661815A CN 106586570 B CN106586570 B CN 106586570B
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Abstract
The present invention relates to oil refining production fields, disclose a kind of system faced and unload dust under hydrogen environment, including dust collector (1), the system further include: nitrogen feedway (2)；Dust surge tank (3) is connect with the dust collector (1) and the nitrogen feedway (2)；Controller, the gas in the dust surge tank (3) is replaced for controlling nitrogen feedway (2) the offer nitrogen to the dust surge tank (3) and control dust surge tank (3) the discharge gas, and the control dust collector (1) unloads dust to dust surge tank (3).The present invention can unload dust in the case where dust collector is not stopped transport, and reduce field operation risk, reduce the fluctuation of elutriation throughput, and enhancing catalyst regeneration system pressure steadily controls, and reduce labor intensity.
Description
Technical field
The present invention relates to oil refining to produce, and in particular, to a kind of to face the system that dust is unloaded under hydrogen environment and one kind faces hydrogen ring
The method of dust is unloaded under border.
Background technique
Continuous reformer is modern refineries agent set, former mainly for the production of high grade clean gasoline and chemical industry
Material, continuous reformer is as modern aromatics production faucet device, and each main oil plant has construction at home；CONTINUOUS REFORMER work
Skill uninterruptedly promoted, recycled, being burnt by catalyst, reducing/regenerating, and reforming catalyst activity is made to be maintained at a preferable water
It is flat, achieve the purpose that improve reaction depth.Reforming catalyst has a small amount of dust and broken particle to generate during circular regeneration,
Continual collection is needed, and is periodically produced.Catalyst dust collection system is high-temperature hydrogen environment in reforming process, normally
Operation temperature is 170 DEG C, pressure 0.40MPa, and hydrogen and dust are all inflammable and explosive media.
Original design there are two large-scale dust collector, normal one come into operation one it is spare, when daily production, need weekly
Switching is primary, and dust collector must first stop transport and cut out, and draws off dust after nitrogen displacement, then again with ability after nitrogen displaced air
It can come into operation.
Since dust collector is very high to filtering accuracy requirement, dust collector is equipped with blowback system, loosening system etc.,
It is various to pass in and out pipeline, switching comes into operation, and operation process is complicated, workload is huge；In addition disengaging valve is various, when cutting out isolation, warp
Be commonly present valves leakage, hydrogen displacement is not thorough, and processing temperature is high, and operating risk is caused to rise, unload dust it is serious when can
Hydrogen and catalyst dust can be caused to burn.Furthermore all operations of original design need manual switch valve, increase operation difficulty
And operating risk, working efficiency are low.
Summary of the invention
The object of the present invention is to provide a kind of system and method faced under hydrogen environment and unload dust, which can be
Dust collector unloads dust in the case where not stopping transport, and reduces field operation risk, reduces the fluctuation of elutriation throughput, enhancing catalysis
Agent regenerative system pressure steadily controls, and reduces labor intensity.
To achieve the goals above, the present invention provides a kind of system faced and unload dust under hydrogen environment, including dust collector,
The system further include: nitrogen feedway；Dust surge tank is connect with the dust collector and the nitrogen feedway；
Controller provides nitrogen to the dust surge tank and the control dust surge tank row for controlling the nitrogen feedway
Gas replaces the gas in the dust surge tank out, and the control dust collector unloads dust to dust surge tank.
It include: with the gas in nitrogen displacement dust surge tank the present invention also provides a kind of method for unloading dust of facing under hydrogen environment
Body；And dust is unloaded to the dust surge tank from dust collector.
Through the above technical solutions, being provided with using the system and method provided by the invention faced under hydrogen environment and unload dust
Dust surge tank, using dust is discharged into dust surge tank after the gas in nitrogen displacement dust surge tank and replaces powder again
Gas in dirt surge tank, then the dust in dust surge tank is discharged into dust bucket.It above can be automatic by control valve
Control is completed, and dust can be unloaded in the case where dust collector is not stopped transport, and reduce field operation risk, reduces elutriation air-flow
Amount fluctuation, enhancing catalyst regeneration system pressure steadily control, and reduce labor intensity.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram provided by the invention for facing and unloading the system of dust under hydrogen environment；
Fig. 2 is that an embodiment provided by the invention faces the structural schematic diagram that the system of dust is unloaded under hydrogen environment；
Fig. 3 is the flow chart provided by the invention for facing and unloading the method for dust under hydrogen environment；
Fig. 4 is provided by the invention faces under hydrogen environment with the flow chart of the gas in nitrogen displacement dust surge tank.
Description of symbols
1 dust collector, 2 nitrogen feedway
3 dust surge tank, 51 first control valve
52 second control valve, 53 third control valve
6 filter, 7 pressure detector
8 temperature detectors
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is the structural schematic diagram provided by the invention for facing and unloading the system of dust under hydrogen environment.As shown in Figure 1, one kind is faced
The system that dust is unloaded under hydrogen environment, including dust collector 1, the system further include: nitrogen feedway 2；Dust surge tank 3,
It is connect with the dust collector 1 and the nitrogen feedway 2；Controller is provided for controlling the nitrogen feedway 2
Gas is discharged to the dust surge tank 3 and the control dust surge tank 3 to replace the gas in the dust surge tank 3 in nitrogen
Body, and the control dust collector 1 unload dust to dust surge tank 3.
Since hydrogen and dust are all inflammable and explosive media, in view of needing nitrogen guarantee to be made when unloading dust
With danger is prevented, in the present invention, controller can use PLC controller, act on and providing for control nitrogen feedway 2
Nitrogen, and control the discharge gas of dust surge tank 3 then dust is controlled with the gas being sufficiently displaced from dust surge tank 3 as far as possible
Collector 1 starts to unload dust to dust surge tank 3, and after dust is unsnatched, repeatedly substitution gas step guarantees safety again, finally
Control dust surge tank 3 unloads dust to dust bucket.
The device connected due to dust collector 1 and 1 periphery of dust collector and connection type etc. are the prior arts,
Details are not described herein.The temperature-detecting device and pressure-detecting device connecting with dust collector 1 can be set in the present invention, convenient
Monitor the temperature and pressure of dust collector 1.
Below will by introduce a kind of more detailed embodiment be better described it is provided by the invention face under hydrogen environment unload
The system of dust.
Fig. 2 is that an embodiment provided by the invention faces the structural schematic diagram that the system of dust is unloaded under hydrogen environment.Such as Fig. 2
It is shown, the system further include: the first control valve 51 is used between the nitrogen feedway 2 and the dust surge tank 3
In the opening when needing to provide nitrogen to the dust surge tank 3；Second control valve 52 is located at the dust surge tank 3 and is vented
On pipeline, for the opening when needing to be discharged the gas in the dust surge tank 3；Third control valve 53 is located at the dust
Between collector 1 and the dust surge tank 3, for the opening when the dust collector 1 unloads dust to dust surge tank 3.
When this system is equipped with valve, control device can transfer control valve, such as control the first control valve 51
It is opened and closed to control the supplement of nitrogen, controls the opening and closing of the second control valve 52 to control the discharge of the gas in dust surge tank 3, control
The start and stop of dust are unloaded in the opening and closing of third control valve 53 to control.It is controlled by valve, entire control process can be made simpler
It is single and reasonable.
More accurately to replace the gas in dust surge tank 3, the present invention can also be to supplement nitrogen and discharge gas
Opportunity is defined, therefore the system can also include pressure detector 7, connect with the dust surge tank 3, for detecting powder
Gas pressure in dirt surge tank 3.Pressure detector 7 can be divided into site pressure detector and remote pressure detector.Care for name
Think justice, site pressure detector can check the gas pressure in dust surge tank 3 for Field Force, and remote pressure detector
The pressure in dust surge tank 3 can be understood from other channels for off-site personnel.
When controlling the offer of nitrogen feedway 2 nitrogen, when the pressure in dust surge tank 3 rises to first pressure threshold
When value, stop supplement nitrogen.In the present invention, first pressure threshold value is 0.2-0.4MPa, preferably 0.3MPa.
When controlling the discharge of dust surge tank 3 gas, when the pressure in dust surge tank 3 is down to second pressure threshold value
When, stop discharge gas.In the present invention, second pressure threshold value is 0.02-0.04MPa, preferably 0.03MPa.
The system further includes temperature detector 8, is connect with the dust surge tank 3, for detecting 3 medium temperature of dust surge tank
Degree.It acts as, although having completed substitution gas step, still it is still needed to again when the temperature of dust surge tank 3 is excessively high
The step of carrying out substitution gas can just start to unload dust until the temperature of dust surge tank 3 is normal.It as a result, could be thoroughly complete
It is converted at from high temperature and pressure hydrogen environment to low-temp low-pressure nitrogen environment.
In addition, due to that may further include with the dust unloaded, the system when gas is discharged in dust surge tank 3
Filter 6 is located on 3 exhaust pipe of dust surge tank, for blocking the dust being discharged with gas.There is filter 6
In the case of, filter 6, can be in filtering as shown in the figure because often having the generation of the case where blocking using overlong time
The right (i.e. outgassing direction) of device 6 is arranged another nitrogen feedway (not drawing) and carries out blowback, will block the powder of filter 6
Dirt blows back dust surge tank 3.It, will not be to the gas in dust surge tank 6 since the gas for blowback is still nitrogen
It impacts.
It is one or many that the controller executes the step of gas in nitrogen displacement dust surge tank, until powder
Until when temperature and pressure in dirt surge tank 3 is normal.
The controller is also used to: continuing pre- timing from dust collector unloading dust to the dust surge tank described
Between after, the gas that control is discharged in the dust surge tank is until the pressure of the dust surge tank is down to second pressure threshold
Value, replaces the gas in the dust surge tank again with nitrogen.
Fig. 3 is the flow chart provided by the invention for facing and unloading the method for dust under hydrogen environment.As shown in figure 3, one kind faces hydrogen ring
The method that dust is unloaded under border includes: with the gas in nitrogen displacement dust surge tank；And from dust collector unload dust to
The dust surge tank.
Fig. 4 is provided by the invention faces under hydrogen environment with the flow chart of the gas in nitrogen displacement dust surge tank.Such as Fig. 4
It is shown, face in the method for unloading dust under hydrogen environment, includes: supplement nitrogen with the step of gas in nitrogen displacement dust surge tank
Stop supplement nitrogen when the pressure in the dust surge tank rises to first pressure threshold value to the dust surge tank；Discharge
Gas in the dust surge tank stops discharge gas when the pressure in the dust surge tank is down to second pressure threshold value
Body；The step of executing the gas in nitrogen displacement dust surge tank is one or many.
In addition, in order to guarantee to replace thorough and more preferably safety, therefore dust is unloaded from dust collector described
After to the dust surge tank predetermined hold-time, the gas in the dust surge tank is discharged until the dust surge tank
Pressure be down to second pressure threshold value, the gas in the dust surge tank is replaced with nitrogen again.
Face the method entirety detailed step that dust is unloaded under hydrogen environment are as follows:
Start to supplement nitrogen to the dust surge tank；When the pressure in the dust surge tank rises to first pressure threshold value
When, stop supplement nitrogen, otherwise continues to supplement；The gas in the dust surge tank is discharged；When in the dust surge tank
When pressure is down to second pressure threshold value, stops discharge gas, otherwise continue to be discharged；Repeat the above gas displacement step repeatedly (this
Invention preferably 4 times)；Dust is unloaded to the dust surge tank predetermined hold-time；The gas in the dust surge tank is discharged
When the pressure of the dust surge tank is down to second pressure threshold value, stops discharge gas, otherwise continue to be discharged；Start to supplement
Nitrogen is to the dust surge tank；When the pressure in the dust surge tank rises to first pressure threshold value, stop supplement nitrogen,
Otherwise continue to supplement；The gas in the dust surge tank is discharged；When the pressure in the dust surge tank is down to second pressure
When threshold value, stops discharge gas, otherwise continue to be discharged；Repeat the above gas displacement step repeatedly (present invention is preferably 4 times)；It unloads
Dust is to dust bucket.
If controlled using control valve in above-mentioned steps, nitrogen, each time discharge dust buffering are supplemented each time
After gas in tank and while unloading dust to dust surge tank close control valve, it is both needed to check whether control valve closes for the sake of insurance
In place, due to being apparent common knowledge, details are not described herein again.
Through the above technical solutions, being provided with using the system and method provided by the invention faced under hydrogen environment and unload dust
Dust surge tank, using dust is discharged into dust surge tank after the gas in nitrogen displacement dust surge tank and replaces powder again
Gas in dirt surge tank, then the dust in dust surge tank is discharged into dust bucket.It above can be automatic by control valve
Control is completed, and dust can be unloaded in the case where dust collector is not stopped transport, and reduce field operation risk, reduces elutriation air-flow
Amount fluctuation, enhancing catalyst regeneration system pressure steadily control, and reduce labor intensity.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (10)
1. a kind of face the system for unloading dust under hydrogen environment, including dust collector (1), which is characterized in that the system further include:
Nitrogen feedway (2)；
Dust surge tank (3) is connect with the dust collector (1) and the nitrogen feedway (2)；
Dust bucket is connect with the dust surge tank；
Pressure detector (7) is connect, for detecting the gas pressure in dust surge tank (3) with the dust surge tank (3)；
Temperature detector (8) is connect, for detecting the temperature in dust surge tank (3) with the dust surge tank (3)；
Controller is used for:
According to the gas pressure control the nitrogen feedway (2) provide nitrogen to the dust surge tank (3) and according to
The gas pressure controls dust surge tank (3) the discharge gas to replace the gas in the dust surge tank (3)；
The dust collector (1), which is controlled, according to the temperature unloads dust to dust surge tank (3)；
Again according to the gas pressure control the nitrogen feedway (2) provide nitrogen to the dust surge tank (3) and
Dust surge tank (3) the discharge gas is controlled according to the gas pressure to replace the gas in the dust surge tank (3)；
It controls the dust surge tank (3) and unloads dust to dust bucket.
2. according to claim 1 face the system for unloading dust under hydrogen environment, which is characterized in that the system further include:
First control valve (51), between the nitrogen feedway (2) and the dust surge tank (3), for when needs
It is opened when nitrogen to dust surge tank (3) are provided；
Second control valve (52) is located on dust surge tank (3) exhaust pipe, needs to be discharged the dust buffering for working as
It is opened when gas in tank (3)；
Third control valve (53), between the dust collector (1) and the dust surge tank (3), for working as the powder
Dirt collector (1) is opened when unloading dust to dust surge tank (3).
3. according to claim 1 face the system for unloading dust under hydrogen environment, which is characterized in that the system further includes filter
(6), it is located on dust surge tank (3) exhaust pipe, for blocking the dust being discharged with gas.
4. according to claim 1 face the system for unloading dust under hydrogen environment, which is characterized in that control the nitrogen supply dress
It sets (2) and nitrogen is provided and controls dust surge tank (3) the discharge gas and include:
When the pressure in dust surge tank (3) rises to first pressure threshold value, stop supplement nitrogen；And
When the pressure in dust surge tank (3) is down to second pressure threshold value, stop discharge gas.
5. according to claim 1 face the system for unloading dust under hydrogen environment, which is characterized in that described in the controller executes
The step of with gas in nitrogen displacement dust surge tank, is one or many.
6. according to claim 1 face the system for unloading dust under hydrogen environment, which is characterized in that the controller is also used to:
After the unloading dust to the dust surge tank predetermined hold-time from dust collector, the powder is discharged in control
Gas in dirt surge tank is down to second pressure threshold value until the pressure of the dust surge tank, replaces the powder again with nitrogen
Gas in dirt surge tank.
7. a kind of face the method for unloading dust under hydrogen environment, which is characterized in that this method using dust collector, dust surge tank and
Dust bucket, this method comprises:
Detect the temperature and gas pressure in the dust surge tank；
The gas in the dust surge tank is replaced with nitrogen according to the gas pressure；
Dust is unloaded to the dust surge tank from dust collector according to the temperature；
The gas in the dust surge tank is replaced with nitrogen again according to the gas pressure；And
It controls the dust surge tank and unloads dust to the dust bucket.
8. according to claim 7 face the method for unloading dust under hydrogen environment, which is characterized in that buffered with nitrogen displacement dust
The step of gas in tank includes:
It supplements nitrogen and stops to the dust surge tank when the pressure in the dust surge tank rises to first pressure threshold value
Supplement nitrogen；And
The gas in the dust surge tank is discharged, when the pressure in the dust surge tank is down to second pressure threshold value, stops
Gas is only discharged.
9. according to claim 7 face the method for unloading dust under hydrogen environment, which is characterized in that execution is described to be replaced with nitrogen
The step of gas in dust surge tank, is one or many.
10. according to claim 7 face the method for unloading dust under hydrogen environment, which is characterized in that
After the unloading dust to the dust surge tank predetermined hold-time from dust collector, it is slow that the dust is discharged
The gas rushed in tank is down to second pressure threshold value until the pressure of the dust surge tank, and it is slow to replace the dust again with nitrogen
Rush the gas in tank.
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| CN201510661815.9A CN106586570B (en) | 2015-10-14 | 2015-10-14 | Face the system and method that dust is unloaded under hydrogen environment |
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| CN201510661815.9A CN106586570B (en) | 2015-10-14 | 2015-10-14 | Face the system and method that dust is unloaded under hydrogen environment |
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| CN108946176A (en) * | 2017-05-19 | 2018-12-07 | 中国石化工程建设有限公司 | A kind of devices and methods therefor of catalyst safe transport between mutual exclusion environment |
| CN111170822A (en) * | 2019-08-26 | 2020-05-19 | 浙江卫星能源有限公司 | Process for preparing propylene by propane dehydrogenation in superimposed on-line switchable fluid bed |
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| US5372653A (en) * | 1993-05-28 | 1994-12-13 | Courtaulds Fibres (Holdings) Limited | Cleaning of filters |
| CN103816742B (en) * | 2012-06-29 | 2015-11-25 | 邹岳明 | The phosphorus steam dust removing device of the dust in energy filtering phosphorus steam and method of work thereof |
| CN102886182B (en) * | 2012-10-17 | 2014-05-21 | 宿玉华 | Protection device and protection method for filter bag of bag-type dust remover |
| CN103332458B (en) * | 2013-06-28 | 2015-09-02 | 中冶南方工程技术有限公司 | The thin grey air-transport system of a kind of dry dedusting of converter |
| CN203737016U (en) * | 2013-12-12 | 2014-07-30 | 中国石油化工股份有限公司 | Coal gas blowback device for PSA analytical gas |
| CN103736339B (en) * | 2014-01-21 | 2015-11-18 | 内蒙古大唐国际锡林浩特褐煤综合开发有限责任公司 | The method of coal powder collection |
| CN203998911U (en) * | 2014-07-24 | 2014-12-10 | 湖北博凯医药科技有限公司 | The special-purpose filling apparatus of a kind of acyl chloride compound |
| CN104623990B (en) * | 2015-02-15 | 2017-03-22 | 北京烨晶科技有限公司 | High-temperature gas-solid filtering separation device |
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