CN104371757A - Technology for preventing catalyst leakage of continuous reforming apparatus - Google Patents
Technology for preventing catalyst leakage of continuous reforming apparatus Download PDFInfo
- Publication number
- CN104371757A CN104371757A CN201310356554.0A CN201310356554A CN104371757A CN 104371757 A CN104371757 A CN 104371757A CN 201310356554 A CN201310356554 A CN 201310356554A CN 104371757 A CN104371757 A CN 104371757A
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- CN
- China
- Prior art keywords
- catalyst
- filter
- oil gas
- reactor
- reforming
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G35/00—Reforming naphtha
- C10G35/24—Controlling or regulating of reforming operations
Abstract
The invention relates to a technology for preventing catalyst leakage of a continuous reforming apparatus. The technology comprises the following steps: arranging a catalyst filter at the outlet of each of reforming reactors, arranging pressure gauges in front of and behind each of the catalyst filters, calculating the pressure difference, determining the difference between the pressure in front of the catalyst filter at the outlet of each of the reforming reactors and the pressure behind the catalyst filter in order to directly judge that whether the catalyst leakage of each of the reactors occurs or not, and opening the catalyst filter and discharging the above catalyst once the catalyst is leaked. The technology can effectively solve the problem of the entrance of a catalyst-containing oil gas to next apparatuses due to the rupture of members in the reforming reactors, allows the oil gas to go through the filter and then enter heating furnaces and next reactors, and allows the catalyst to be discharged from the bottoms of the filters if the catalyst is leaked. The technology allows whether the filter leaks or not to be determined by determining the difference between the pressure in front the catalyst filters and the pressure behind the catalyst filters, and allows corresponding measures to be timely adopted, so the long term running of the apparatus can be effectively maintained.
Description
Technical field
The present invention relates to a kind of technique preventing continuous reforming plant catalyst from leaking.
Background technology
Catalytic reforming is the significant process of oil secondary processing, is the catalytic reaction process for the purpose of production high octane gasoline component and aromatic hydrocarbons.Continual catalyst transport is the key of CONTINUOUS REFORMER reaction, catalyzer relies on self gravitation to enter reactor, bottom hopper successively to catalyst devator from top hopper, rely on again and promote the top hopper that air lift rises to next reactor, out revivifier is promoted to afterwards from reactor, by once burning, the process such as secondary burns, oxychlorination, roasting, reduction enters reactor and carries out catalyst recirculation, reaches the object of regeneration.Oil gas enters reforming reactor after process furnace heating, and in reforming reactor and catalyst exposure, reacted oil gas enters next reactor after entering the heating of next process furnace.At present before reforming reactor, plate-type heat exchanger entrance has a basket filter, prevents impurity from entering plate-type heat exchanger, blocking plate-type heat exchanger.
Because reforming reactor internals are very complicated, web member is very many, the leakage point that only reactor head is formed just reaches six large class 100 multiple spots, and in the case of a high temperature by temperature, pressure fluctuations, internals and web member are very easily out of shape, ftracture, occur to leak agent phenomenon, cause very big hidden danger to device long-term operation.If reforming reactor pipe core is damaged, distortion, catalyzer generation leakage enters four-in-one stove collecting tubule, and then enter next reactor sector drum, reactor pressure decrease is made to increase, make catalyzer dipleg block time serious, if the 4th reactor, catalyzer enters plate-type heat exchanger with oil gas, heat exchanger plate blocks, and reformer is forced to the serious consequence of stopping work.
Existing reformer reactor oil gas flows out bottom pipe core, can enter four-in-one stove collecting tubule, then enter next stage reactor sector drum, cause reformer to stop work when there is catalyst leakage.
Summary of the invention
For solving the problem, the technical solution used in the present invention is: a kind of technique preventing continuous reforming plant catalyst from leaking, containing multiple reforming reactor, oil gas enters reforming reactor after process furnace heating, in reforming reactor and catalyst exposure, reacted oil gas enters next reactor after entering the heating of next process furnace, oil gas after last reactor reaction enters plate-type heat exchanger heat exchange, it is characterized in that setting up catalyst filter in each reforming reactor outlet, and tensimeter is set before and after catalyst filter, metering pressure reduction, by measuring the front and back pressure drop of reforming reactor outlet catalyst filter, directly judge whether reactor leaks agent, once leakage agent, catalyst filter can be opened and draw off catalyzer.
The present invention prevents catalyzer from bringing oil gas collecting tubule or boiler tube into by setting up catalyst filter, takes even next reactor to; By measuring the front and back pressure drop of reforming reactor outlet catalyst filter, directly judge whether reactor leaks agent, once leakage agent, can opened filter remove in time the inside catalyzer, prevent a large amount of catalyzer from bringing oil gas collecting tubule or boiler tube into, take even next reactor to and cause reaction pressure drop rise, device cannot normally run.
Tensimeter is arranged on before and after the strainer of reactor outlet, and mainly by pressing extent to judge before and after strainer, whether reforming reactor leaks agent.
The present invention will set up a kind of catalyst filter that can prevent catalyzer from entering next equipment at reactor outlet, can be the strainers such as basket filter, but basket filter volume is less, and when catalyst leakage, only have opened filter just can remove the catalyzer of leakage, there is larger security risk.
The present invention also provides a kind of catalyst filter being specially adapted to this process, and catalyst filter structure as shown in Figure 2.
Catalyst filter adopts core structure, and oil and gas import is in the middle part of cylinder, and bottom is taper, and bottom is provided with catalyzer discharge opening, and cylinder upper end is provided with oil gas vent, and filter core is outstanding to be invested in cylinder, and cartridge top connects with oil gas vent.
In catalyst filter of the present invention, filter core preferably adopts Johnson Net, and the inner screen drum that adopts is fixed.
In the present invention the cylinder upper end of catalyst filter preferably flange arrangement be strainer flange, centre has oil gas vent, and stack shell is fixed on strainer flange, and filter core top pin is fixed on strainer flange.
This kind of catalyst filter is installed on the exit end of reforming reactor: the oil gas that autoreactor goes out, enter from catalyst filter side oil and gas import, through Johnson Net filter core, oil gas flows out from catalyst filter top oil gas vent and enters next device, if entrained catalyst in oil gas, be deposited on after filter element filtering bottom catalyst filter, draw off from discharge opening.
Adopt the present invention, there is following effect: can effectively solve because reforming reactor inner member breaks and causes catalyst leakage to enter next equipment with oil gas, process furnace, next reactor is entered through catalyst filter after oil gas goes out reforming reactor, if catalyzer generation leakage can carry out discharging from filter bottom, and by measuring pressure reduction before and after catalyst filter, judge whether reactor leaks, and takes corresponding measure in time, effective attending device long-term operation.
Accompanying drawing explanation
Figure 1 shows that application a kind of process schematic representation preventing continuous reforming plant catalyst from leaking of the present invention.
Figure 2 shows that application a kind of catalyst filter structural representation of the present invention
In accompanying drawing:
1---top hopper 2---process furnace 3---reforming reactor
4---catalyst filter 5---bottom hopper 6---lifter
Surge tank 8---revivifier top, 7---top surge tank 9---locking hopper
10---revivifier 11---differential pressure indicator 12---catalyst filter cylindrical shell
13---oil and gas import 14---oil gas vent 15---catalyzer discharge opening
16---strainer flange 17---Johnson Net 18---screen drum
19---pin
A--reformer feed (oil gas) B-subsequent cell
Embodiment
Use the reforming process shown in Fig. 1, reformer feed (oil gas) A enters plate-type heat exchanger after raw material strainer, oil gas after heat exchange enters process furnace 2, reforming reactor 3 is entered after adding to temperature of reaction, reaction product enters catalyst filter 4, a differential pressure gauge 11 is had before and after strainer, can judge whether reactor leaks, inherent filtration device oil gas out enters process furnace, reactor, enters next unit B (subsequent cell) from last reactor product out after being separated.After lifter 6 promotes, enter the top hopper 1 on reactor top from the catalyzer that revivifier is next, rely on self gravitation, enter reforming reactor 3 through dipleg, in reactor, realize the contact of oil gas and catalyzer.Participate in reacted catalyzer and enter bottom hopper 5 by self gravitation, catalyzer is promoted to the top hopper 5 of next reactor by lifter 6, revivifier top surge tank 8 is promoted to from last lifter 6 catalyzer out, enter locking hopper 9 revivifier 10 by self gravitation, complete the cyclic regeneration of catalyzer.
In the present invention, catalyst filter 4 recommends structure shown in Fig. 2 of selecting: the upper end of catalyst filter is strainer flange, and centre has oil gas vent, and stack shell is fixed on strainer flange.Filter core adopts Johnson Net 17, and the inner screen drum 18 that adopts is fixed; Filter core top pin 19 is fixed on strainer flange, the oil gas that autoreactor goes out, enter from catalyst filter side oil and gas import 13, through Johnson Net filter core 17, oil gas flows out from catalyst filter top oil gas vent 14 and enters next device, if oil gas entrained catalyst, be deposited on after filter element filtering bottom catalyst filter, draw off from catalyzer discharge opening 15.
Claims (4)
1. the technique preventing continuous reforming plant catalyst from leaking, containing multiple reforming reactor, oil gas enters reforming reactor after process furnace heating, in reforming reactor and catalyst exposure, reacted oil gas enters next reactor after entering the heating of next process furnace, oil gas after last reactor reaction enters plate-type heat exchanger heat exchange, it is characterized in that setting up catalyst filter in each reforming reactor outlet, and tensimeter is set before and after catalyst filter, metering pressure reduction, by measuring the front and back pressure drop of reforming reactor outlet catalyst filter, directly judge whether reactor leaks agent, once leakage agent, catalyst filter can be opened and draw off catalyzer.
2. the technique preventing continuous reforming plant catalyst from leaking according to claim 1, it is characterized in that catalyst filter adopts core structure, oil and gas import is in the middle part of cylinder, bottom is taper, bottom is provided with catalyzer discharge opening, cylinder upper end is provided with oil gas vent, and filter core is outstanding to be invested in cylinder, and cartridge top connects with oil gas vent.
3. the technique preventing continuous reforming plant catalyst from leaking according to claim 1 and 2, is characterized in that in catalyst filter, filter core adopts Johnson Net, and the inner screen drum that adopts is fixed.
4. the technique preventing continuous reforming plant catalyst from leaking according to claim 2, the cylinder upper end that it is characterized in that catalyst filter preferably flange arrangement is strainer flange, centre has oil gas vent, stack shell is fixed on strainer flange, and filter core top pin is fixed on strainer flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310356554.0A CN104371757B (en) | 2013-08-15 | 2013-08-15 | A kind of technique preventing continuous reforming plant catalyst from leaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310356554.0A CN104371757B (en) | 2013-08-15 | 2013-08-15 | A kind of technique preventing continuous reforming plant catalyst from leaking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104371757A true CN104371757A (en) | 2015-02-25 |
| CN104371757B CN104371757B (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310356554.0A Active CN104371757B (en) | 2013-08-15 | 2013-08-15 | A kind of technique preventing continuous reforming plant catalyst from leaking |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000303076A (en) * | 1999-04-23 | 2000-10-31 | Idemitsu Kosan Co Ltd | Method for determining operation mode of gasoline production equipment and method for operating the equipment |
| WO2002094967A1 (en) * | 2000-09-22 | 2002-11-28 | Conocophillips Company | Improved catalytic reforming process |
| CN1426445A (en) * | 2000-09-22 | 2003-06-25 | 菲利浦石油公司 | Improved catalytic reforming process |
| CN101376823A (en) * | 2007-08-31 | 2009-03-04 | 中国石油化工股份有限公司 | Benzin naphtha catalytic reforming method |
-
2013
- 2013-08-15 CN CN201310356554.0A patent/CN104371757B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000303076A (en) * | 1999-04-23 | 2000-10-31 | Idemitsu Kosan Co Ltd | Method for determining operation mode of gasoline production equipment and method for operating the equipment |
| WO2002094967A1 (en) * | 2000-09-22 | 2002-11-28 | Conocophillips Company | Improved catalytic reforming process |
| CN1426445A (en) * | 2000-09-22 | 2003-06-25 | 菲利浦石油公司 | Improved catalytic reforming process |
| CN101376823A (en) * | 2007-08-31 | 2009-03-04 | 中国石油化工股份有限公司 | Benzin naphtha catalytic reforming method |
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| CN104371757B (en) | 2016-07-13 |
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