CN115161063A - Distributing equipment - Google Patents
Distributing equipment Download PDFInfo
- Publication number
- CN115161063A CN115161063A CN202210291393.0A CN202210291393A CN115161063A CN 115161063 A CN115161063 A CN 115161063A CN 202210291393 A CN202210291393 A CN 202210291393A CN 115161063 A CN115161063 A CN 115161063A
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- Prior art keywords
- pipe
- branch
- branch pipe
- rectangular
- distribution
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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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- 238000009826 distribution Methods 0.000 claims abstract description 72
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 14
- 241000270708 Testudinidae Species 0.000 claims abstract description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000004523 catalytic cracking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- 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
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The invention discloses a distribution device. The distribution equipment comprises branch pipes, nozzles, branch pipes, a tortoise shell net, a lining and a main pipe; the branch pipe is rectangular and is formed by welding steel plates, and in order to increase the flow area in the branch pipe, holes are formed below the lower semicircular pipe in a staggered mode according to the required spacing of nozzle arrangement; the branch pipe can be a circular pipe or a rectangular pipe, and nozzles are arranged at the bottom of the branch pipe according to the required spacing of nozzle arrangement for uniform medium distribution; will rectangle lateral pipe welds the branch pipe of place according to required interval on, paints high wear-resisting lining after branch pipe and lateral pipe surface welding tortoise shell net or anchor nail, prevents that the medium from wearing out the distribution equipment fast, through adopting rectangle branch pipe and lateral pipe, can increase the distribution equipment outer medium and pass through distribution equipment flow area, the medium reduces and the distribution equipment outer table high wear-resisting lining wearing and tearing reduce through distribution equipment pressure drop.
Description
Technical Field
The invention belongs to the field of petroleum processing, and relates to a gas mixing distribution system for a reactor, in particular to distribution equipment.
Background
At present, in a catalytic cracking device of petrochemical industry, media of a plurality of reactors, regenerators and containers need to be uniformly distributed, the media need to be distributed more uniformly through media distribution equipment, and the branch-shaped distribution equipment is a common distribution equipment type.
The existing branch distribution equipment mainly comprises a circular branch pipe and a circular branch pipe.
The branch pipe applied to the petrochemical industry is formed by processing a round seamless steel pipe, nozzles are welded on the branch pipe according to a certain distance, but the longitudinal cutting area and the transverse cutting area of the seamless steel pipe with a certain length are fixed, and the larger the flow area in the branch pipe is when the total amount of a medium is fixed, the more the nozzles can be arranged. If the diameter of the branched pipe seamless steel pipe is increased, the ratio of the whole distribution equipment to the cross section area of the equipment is higher, the flow area in the pipe is increased, but the medium passing area outside the pipe is reduced, so that the pressure drop of the medium passing through the distribution equipment is large, the medium outside the distribution equipment has high flow velocity through the distribution equipment, the wear of a high-wear-resistant lining on the surface of the distribution equipment is serious, the energy consumption and the normal operation of the device are directly influenced, and the production is stopped for repairing when the wear is serious.
Patent CN202023081011.7 provides a main air distributing pipe for catalytic cracker regenerator, is provided with the branch pipe on main air pipe, branch pipe, bleeder and the nozzle main air pipe, and four branch pipes evenly set up along the main air pipe, and the left and right sides symmetry of branch pipe is provided with the bleeder, and the left and right sides of bleeder evenly is provided with a plurality of nozzles. However, the scheme can only realize that the nozzles are uniformly distributed along the bed layer, and because the areas of the branch pipes and the branch pipes cannot be accurately adjusted, the flow through all the nozzles can not be basically kept the same, and the uniform distribution of media along the bed layer can not be realized actually, the medium throughput of some nozzles is large, the medium throughput of some nozzles is small, and even external media can return to the interior of the branch pipes through the nozzles to block the branch pipes; although the connecting plates are arranged between the branch pipes on each side of the branch pipes, the circular branch pipes and the branch pipes have limited ability to resist vibration in the medium flow due to the bending resistance and rigidity limitations of the circular branch pipes and the branch pipes, and the steel distribution pipes are worn through by the catalyst quickly after the surface lining is broken off by vibration. If the diameter of the dense phase of the distribution pipe is small, and the air flow is large, the distribution pipe occupies a large dense phase area, and the medium passes through the distribution pipe at a high speed, so that the pressure drop of a bed layer is large, the distribution pipe is seriously abraded, the distribution pipe is seriously vibrated, the long-period stable operation of the device is difficult to realize, and even the device cannot operate.
Disclosure of Invention
The invention provides distribution equipment, aiming at solving the problems that the distribution of a medium is not uniform through the distribution equipment, the pressure drop of the medium through the distribution equipment is large, the flow velocity of the medium outside the distribution equipment through the distribution equipment is high, so that the wear of a high-wear-resistant lining on the surface of the distribution equipment is serious, the bending resistance and the rigidity of a branch pipe are insufficient, the branch pipe is easy to vibrate and damage, and the like.
The invention provides a distribution device, which comprises branch pipes, nozzles, branch pipes, a tortoise shell net and a lining; the branch pipe is rectangular and is formed by welding steel plates, and in order to increase the flow area in the branch pipe, the nozzles are drilled and welded in a staggered mode at intervals required by nozzle arrangement below the lower semicircular pipe; the branch pipe can be a round pipe or a rectangular pipe, and nozzles are arranged at the bottom of the branch pipe according to the required spacing of nozzle arrangement for uniform medium distribution; and welding the rectangular branch pipes to the branch pipes at required intervals, welding a tortoise-shell net or anchoring nails on the outer surfaces of the branch pipes and the outer surfaces of the branch pipes, and then coating a high-wear-resistant lining to prevent the medium from quickly wearing the distribution equipment.
In an improved mode, the rectangular branch pipe is formed by punching a steel plate.
As a further improved scheme, the rectangular branch pipe is a shaped rectangular pipe.
As a further improvement, the ratio of the height to the width of the rectangular branch pipe is not more than 3
As a further improvement, the branch pipe is a rectangular pipe formed by welding steel plates, and the ratio of the length to the width is not more than 2.5.
As a further improved scheme, the branch pipe is a round pipe formed by rolling a steel plate.
As further improved scheme, distribution equipment is still including being responsible for set up the connecting plate between the bleeder, every branch pipe below sets up the stay tube, makes the branch pipe end with be responsible for the UNICOM, can support the branch pipe and to the terminal more media of carrying of branch pipe, the effect that prevents the vibration of distribution pipe that can be better played of branch pipe after the stay tube reinforcement.
The invention is applied to process equipment of various devices including but not limited to petrochemical industry catalytic cracking, coal chemical industry methanol-to-olefin and the like for medium distribution.
The working principle of the distribution equipment provided by the invention is as follows:
the medium is uniformly distributed through the main pipe, the branch pipe and the nozzle and then uniformly contacts with the catalyst in the bed layer, so that the requirements of medium reaction or catalyst regeneration and the like are met. The distribution pipe branch pipe, the branch pipe are uniformly distributed by the medium in the distribution equipment, so that the process production requirement is better met.
The invention has the following beneficial effects:
1) By adopting the rectangular branch pipe and the branch pipe, the cross section area of the branch pipe can be adjusted by changing the height of the rectangular pipe, so that the flow area in the branch pipe can be adjusted, the medium flow of a single nozzle of the rectangular branch pipe can be adjusted to be close to the same, and the medium distribution of the distribution equipment is more uniform;
2) By adopting the rectangular branch pipes and the branch pipes, the flow area of the medium outside the distribution equipment passing through the distribution equipment can be increased, the pressure drop of the medium passing through the distribution equipment is reduced, and the wear of the high-wear-resistant lining on the outer surface of the distribution equipment is reduced;
3) The branch pipes and the branch pipes are changed into rectangles, so that the bending resistance and rigidity of the branch pipes and the branch pipes can be increased, the vibration amplitude of the branch pipes is reduced, the lining is prevented from cracking and falling off, the service life of distribution equipment is prolonged, and a connecting plate is arranged between the branch pipes to achieve a better effect.
4) The supporting pipe is arranged below each branch pipe, so that the main pipe is communicated with the tail end of each branch pipe, the branch pipes can be supported, more media can be conveyed to the tail ends of the branch pipes, the branch pipes can better prevent the vibration of the distribution pipes after being reinforced by the supporting pipes, and the service life of the distribution equipment is further prolonged.
Drawings
FIG. 1 is a schematic diagram of a distribution apparatus of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2;
fig. 4 is a schematic view of the long pipe structure in fig. 3.
In the figure: 1-branch pipe, 2-nozzle, 3-branch pipe, 4-tortoise shell net, 5-lining, 6-support pipe, 7-connecting plate and 8-main pipe.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the distribution apparatus comprises a lateral pipe 1, a nozzle 2, a lateral pipe 3, a tortoise-shell net 4, a lining 5; the branch pipe 1 is rectangular, the rectangular branch pipe is formed by welding steel plates, the ratio of the height to the width of the rectangular pipe is not more than 3, and in order to increase the flow area in the branch pipe, the lower semicircular pipe is provided with staggered opening welding nozzles according to the distance required by nozzle arrangement; the branch pipe 3 can be a round pipe or a rectangular pipe, and nozzles are arranged at the bottom of the branch pipe according to the distance required by the arrangement of the nozzles for uniform medium distribution; and welding the rectangular branch pipes to the branch pipes at required intervals, and coating a high-wear-resistant lining after welding a tortoise-shell net or an anchoring nail on the outer surfaces of the branch pipes and the branch pipes in order to increase the bending resistance and rigidity of the distribution equipment, so as to prevent the distribution equipment from being worn out quickly by a medium.
The rectangular branch pipe can be formed by punching a steel plate or can be a shaped rectangular pipe; the branch pipe can be a round pipe formed by rolling a steel plate or a rectangular pipe welded by the steel plate, and the ratio of the length to the width is not more than 2.5; set up connecting plate 7 between the bleeder, set up stay tube 6 under every branch pipe, make and be responsible for 8 and the terminal UNICOM of branch pipe 3, can play the support branch pipe and carry more media to the branch pipe end, branch pipe can be better after the stay tube reinforcement prevent the vibrating action of distribution pipe.
The flow area inside the rectangular branch pipe is increased, so that the number of arranged nozzles is increased; under the condition of guaranteeing that flow area is the same with seamless steel pipe in the lateral conduit, multiplicable distribution equipment outer medium passes through distribution equipment flow area, the medium reduces and the high wear-resisting lining wearing and tearing of distribution equipment surface reduce through distribution equipment pressure drop, increase the bending resistance and the rigidity of lateral conduit, it can make the effect better to set up the connecting plate between the cooperation lateral conduit, reduce lateral conduit vibration amplitude, it bursts and drops to reduce the lining, set up stay tube 6 under every branch pipe, make and be responsible for 8 and 3 terminal UNICOMs of branch pipe, can play support branch pipe 3 and to 3 terminal transport more media of branch pipe, branch pipe 3 can be better prevent the vibration effect of distribution pipe after the stay tube reinforcement, thereby make distribution equipment life increase, reduce the number of times of parking and overhaul, make the long period steady operation of device.
The foregoing is illustrative of the present invention and is not to be construed as limiting thereof in any way. Any person skilled in the art, having the benefit of the present disclosure, will recognize equivalent examples of changes and modifications as may be made without departing from the scope of the invention. Any equivalent changes made to the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention, unless departing from the content of the technical solution of the present invention.
Claims (7)
1. A distribution apparatus, characterized by: the distribution equipment comprises branch pipes, nozzles, branch pipes, a tortoise shell net and a lining; the branch pipe is rectangular and is formed by welding steel plates, and the nozzles are drilled and welded below the lower semicircular pipe in a staggered mode according to the required nozzle arrangement intervals; the branch pipe is a circular pipe or a rectangular pipe, and nozzles are arranged at the bottom of the branch pipe according to the required spacing of nozzle arrangement; welding the rectangular branch pipes to the branch pipes at required intervals, welding a tortoise-shell net or anchoring nails on the outer surfaces of the branch pipes and the outer surfaces of the branch pipes, and then coating a high-wear-resistant lining.
2. The distribution apparatus according to claim 1, wherein: the rectangular branch pipe is formed by punching and molding a steel plate.
3. The distribution apparatus according to claim 1, wherein: the rectangular branch pipe is a shaped rectangular pipe.
4. The distribution apparatus according to claim 1, wherein: the ratio of the height to the width of the rectangular branch pipe is not more than 3.
5. The distribution apparatus according to claim 1, wherein: the branch pipe is a rectangular pipe formed by welding steel plates, and the ratio of the length to the width of the branch pipe is not more than 2.5.
6. The distribution apparatus according to claim 1, wherein: the branch pipe is a circular pipe formed by rolling a steel plate.
7. The distribution apparatus according to claim 1, wherein: the distribution equipment further comprises a main pipe, a connecting plate is arranged between the branch pipes, a supporting pipe is arranged under each branch pipe, the main pipe is communicated with the tail ends of the branch pipes, the branch pipes can be supported, more media can be conveyed to the tail ends of the branch pipes, and the vibration of the distribution pipes can be better prevented by the branch pipes after the supporting pipes are reinforced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210291393.0A CN115161063A (en) | 2022-03-23 | 2022-03-23 | Distributing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210291393.0A CN115161063A (en) | 2022-03-23 | 2022-03-23 | Distributing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115161063A true CN115161063A (en) | 2022-10-11 |
Family
ID=83482905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210291393.0A Pending CN115161063A (en) | 2022-03-23 | 2022-03-23 | Distributing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115161063A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4159627A (en) * | 1976-06-09 | 1979-07-03 | Motoren-Werk Mannheim Ag Vorm. Benz Abt. Stat. Motorenbau | Exhaust pipe for an internal combustion engine |
| US6149136A (en) * | 1998-01-20 | 2000-11-21 | Air Products And Chemicals, Inc. | Distributor for packed liquid-vapor contact column |
| US20050206696A1 (en) * | 2004-03-22 | 2005-09-22 | Fuji Photo Film Co., Ltd. | Liquid supply device and image forming apparatus |
| CN201154303Y (en) * | 2008-02-01 | 2008-11-26 | 中国石化集团洛阳石油化工工程公司 | Gas feed distributor |
| CN201337876Y (en) * | 2008-12-19 | 2009-11-04 | 宁波金远东工业科技有限公司 | Gas-liquid distributor |
| RU2009111944A (en) * | 2009-03-31 | 2010-10-10 | Александр Владимирович Трошкин (RU) | DISTRIBUTOR OF VARIOUS DENSITY OF PHASES IN THE CROSS-SECTION OF FLOW-FLOWING COLUMNS AND METHOD FOR ITS MANUFACTURE |
| CN205275699U (en) * | 2015-12-09 | 2016-06-01 | 北京七星华创电子股份有限公司 | Gas distributor |
| CN109772236A (en) * | 2017-11-14 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of fluid distributor, reaction unit and its application |
| CN210097416U (en) * | 2019-05-29 | 2020-02-21 | 北京万信同和能源科技有限公司 | Gas mixing distributor |
-
2022
- 2022-03-23 CN CN202210291393.0A patent/CN115161063A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4159627A (en) * | 1976-06-09 | 1979-07-03 | Motoren-Werk Mannheim Ag Vorm. Benz Abt. Stat. Motorenbau | Exhaust pipe for an internal combustion engine |
| US6149136A (en) * | 1998-01-20 | 2000-11-21 | Air Products And Chemicals, Inc. | Distributor for packed liquid-vapor contact column |
| US20050206696A1 (en) * | 2004-03-22 | 2005-09-22 | Fuji Photo Film Co., Ltd. | Liquid supply device and image forming apparatus |
| CN201154303Y (en) * | 2008-02-01 | 2008-11-26 | 中国石化集团洛阳石油化工工程公司 | Gas feed distributor |
| CN201337876Y (en) * | 2008-12-19 | 2009-11-04 | 宁波金远东工业科技有限公司 | Gas-liquid distributor |
| RU2009111944A (en) * | 2009-03-31 | 2010-10-10 | Александр Владимирович Трошкин (RU) | DISTRIBUTOR OF VARIOUS DENSITY OF PHASES IN THE CROSS-SECTION OF FLOW-FLOWING COLUMNS AND METHOD FOR ITS MANUFACTURE |
| CN205275699U (en) * | 2015-12-09 | 2016-06-01 | 北京七星华创电子股份有限公司 | Gas distributor |
| CN109772236A (en) * | 2017-11-14 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of fluid distributor, reaction unit and its application |
| CN210097416U (en) * | 2019-05-29 | 2020-02-21 | 北京万信同和能源科技有限公司 | Gas mixing distributor |
Non-Patent Citations (1)
| Title |
|---|
| 万古军;魏耀东;时铭显;: "催化裂化再生器树枝状主风分布管磨损的气相流场分析", 炼油技术与工程, vol. 36, no. 03, pages 371 - 372 * |
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|---|---|---|---|
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20221011 |
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| WD01 | Invention patent application deemed withdrawn after publication |