CN1044115A - Decoking equipment and application method thereof - Google Patents
Decoking equipment and application method thereof Download PDFInfo
- Publication number
- CN1044115A CN1044115A CN 89109838 CN89109838A CN1044115A CN 1044115 A CN1044115 A CN 1044115A CN 89109838 CN89109838 CN 89109838 CN 89109838 A CN89109838 A CN 89109838A CN 1044115 A CN1044115 A CN 1044115A
- Authority
- CN
- China
- Prior art keywords
- decoking
- flexible tubing
- liquid
- parts
- piston
- Prior art date
- 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.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B33/00—Discharging devices; Coke guides
- C10B33/006—Decoking tools, e.g. hydraulic coke removing tools with boring or cutting nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
- B08B9/0936—Cleaning containers, e.g. tanks by the force of jets or sprays using rotating jets
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Coke Industry (AREA)
- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A kind of decoking equipment comprises a hollow flexible tubing 14; One is used for rolling up the reel 3 of scratching this pipe, and it can supply water in this flexible tubing; A decoking instrument 15,16.Have injector 17,21.Its rotation guarantees that by a servo-motor this motor is independent of this current, and for example use is independent of the oil motor of the liquid stream of this decoking liquid.
Description
The present invention relates to usually the hydrocarbon polymer formed by distillatory last running or residue coking field as filler.The invention particularly relates to sedimentation of coke back recycling step in reactor to this coke (decoking).
Coking is a well-known method in the rendering industry, its objective is the use value that improves last running, particularly distillation residue by pyrolysis.
In general, pyrolysis is to carry out in large-scale empty reactor.Cut liquid is discharged from reactor in this reactor, and coking is heated up in a steamer in reactor and deposited, and finishes pyrolysis.
Filler is normally introduced by reactor bottom, therefore at first makes sedimentation of coke at reactor bottom, then, and gradually to the top filling, until reactor is filled up.
At this moment, stop to inject filler and filler is transported in second empty reactor.
After the fs that coke forms, promptly begin the recovery of the coke fraction of subordinate phase.
For this reason, the cleaning of all hydrocarbon residues and with after its cooling in finishing reactor is opened the top of reactor and with suitable instrument boring.These instruments are generally supported by support, or are a kind of boring tower (rig) that can begin portion's boring within it from reactor head.Supporting structure spare is installed in the reactor top, and (each reactor has a support, have two reactors at least), reactor itself is the side of resting on the ground at least then, so that can insert filler, particularly reclaim the coke product of from reactor, discharging, subsequently it is sent to and stores ground or deliver in user's hand by gravity.
The purpose of this invention is to provide a kind of equipment that can avoid support to be positioned at reactor top so that alleviate the weight of entire structure, save investment and make the recovery of coke convenient, economical.Individual hydraulic system, open towards a part of gap between movable piston and piston groove, as the pressure of adding and subtracting auxiliary liquid can cause moving of piston, and this equipment also comprises the reset components of piston in addition, is used for making piston get back to zero position when auxiliary hydraulic pressure power lowers.
3. according to the equipment described in the claim 1, it is characterized in that, above-mentioned (7) has two hydraulic systems, open towards the different sites in gap between movable piston and piston groove, as with the pressure of first recycle system and the relative raising of pressure or the reduction of second recycle system, so, piston just moves in a certain direction, as respectively the pressure of second recycle system pressure with respect to first recycle system being increased or reduces, so, piston with aforementioned opposite direction on move.
4. according to arbitrary described equipment in the claim 1 to 3, it is characterized in that, flexible tubing is made of superimposed layer, comprise at least one sealed plastic shell, the stiffener of pressing at least one is anti-, be entwined by a short pitch coil and have a stiffener stretching resistance and torsion, that be entwined apart from cross coil by at least two meropodiums at least.
5. according to arbitrary described equipment in the claim 1 to 4, wherein, the rigidity of flexible tubing is 50 to 1000daN-m in the time of 20 ℃
2, tensile strength is 10
4To 10
6DaN and antitorque limit are 10
2To 10
4M-daN.
6. according to arbitrary described equipment in the claim 1 to 5, wherein, the part of second parts of decoking instrument has the circular section at least, inserts it in the bigger circular section groove of above-mentioned decoking instrument first parts.
7. according to the application of arbitrary described equipment in the claim 1 to 6, at first on the petroleum coke layer, beat a path, then, coke is removed from wall by almost being edgewise injector by almost being axial injector.
The equipment of realizing this purpose obtains description in France's patent application formerly No. 8706765 and No. 8715141.These equipment used a kind of can be around the flexible tubing on the cylinder and a kind of instrument that is suspended on the flexible tubing.The rotation of this instrument is driven by the reactive force of tangential water-jet.
Equipment of the present invention comprises:
The flexible open tube of (one) one resistance to compression and shearing stress;
(2) one pivot with the wind2 of this flexible tubing of reeling, and it comprises that one provides the feedway of decoking liquid to first end of flexible tubing, and no matter how flexible tubing twines, and it can make aforesaid liquid enter around the property pipe;
(3) one decoking instruments comprise:
(1) first parts that are connected with the second end positiver sealing of above-mentioned flexible tubing makes the decoking liquid in the flexible tubing lead to above-mentioned first parts,
(2) one with first element coaxial and can be around its active second parts, the part that these second parts preferably have the circular section is at least inserted in the groove that first parts have big circular section,
(3) some devices that are independent of the decoking liquid pipeline and make the rotation of second parts,
(4) one be configured in second components interior, along with at least a auxiliary liquid applied pressure changes and along its mobile hollow piston,
(5) somely be used to make decoking liquid to begin first and second parts by instrument from flexible tubing, the device of supplying with to the hollow gap of piston then,
(6) some devices that are used to carry above-mentioned decoking liquid, decoking liquid is transported at least the first injector from hollow gap in turn, its throughput direction almost is axial and opposite with the direction of flexible tubing conveying, perhaps is transported at least the second injector, and its throughput direction almost is edgewise.Above-mentioned injector is installed in second parts,
(7) have at least one that separate from the decoking liquid circulation line, make auxiliary liquid pass the hydraulic system of first and second parts.This system can make auxiliary liquid mobile piston, so that piston delivered to arbitrary position in the position that makes decoking liquid be passed to first or second injector arbitrarily,
(8) some tightness systems that are used to control each circulating pressure.
During use, the flexible tubing that is subjected to rigidity control is begun to send into the reactor from the cylinder in its winding.The free end of flexible tubing (when flexible tubing twines from centre of the drum's line that end farthest) is furnished with downwards the injector with the side water spray, and its decline is subjected to the rotation control of cylinder.The other end of flexible tubing is connected with pressure water source.Water circulates in pipe until entering injector, and sprays to coke layer.The coke briquette that splits away off is discharged from.
Aforesaid device can be used for each reactor, is using as when two or four reactors, is preferably only using an equipment.According to first kind of implementation method, cylinder is active and can be displaced sideways and arrives the top of each reactor in turn.According to another kind of implementation method, cylinder is positioned at the fixed position, but the returning pulley and instrument can be delivered to selected each reactor top of flexible tubing.
Flexible tubing used in the present invention has some characteristics makes it can carry high pressure water safely.In addition, these flexible tubings also have very high stretching resistance and controllable rigidity.At an end of these flexible tubings suitable weight that can also suspend.This specific character can be sent the decoking instrument into inside reactor on the one hand, can avoid waving of flexible tubing on the other hand when using High-Pressure Water.
This operation sequence divides two stages to finish.
When introduce from reactor top the flexible tubing lower end that will have a decoking instrument, at first hole at the longitudinal axis (almost being vertical) of coke upper edge reactor.Water begins from the hole that is configured in this equipment bottom and point to downwards to spray with 100 to 600 crust or bigger pressure, its injection direction or along the tool focus line, or have for example 30 ° of certain obliquitys each other with this medullary ray.In this case, the residing position of hollow piston can make water lead to above-mentioned hole; Again can closed path towards side opening.When this equipment arrives reactor bottom,, that is, make the direction of injection water change side direction since then into and also injection no longer downwards for mobile hollow piston carries out such action to the auxiliary hydraulic pressure recycle system.Jet can be strict with the tool focus line, and perhaps formation and this vertical line are the angle as ± 20 °.
Like this, the hydraulic pressure on side direction just reaches 110 to 600 crust or higher, 150 to 400 crust preferably, and this just penetrates coke and is broken into piece it is flowed out from described bottom, and is drained by water.Use as 150 to 400 crust or higher mausoleum graves, just can obtain bigger relatively coke cutting, avoid forming the meticulous later isolating fine powder that is difficult to.
According to other embodiment, can determine the mid-way of piston, axial and edgewise injector is sprayed water simultaneously.
The flexible tubing that uses among the present invention preferably is made up of superimposed layer, the plastic casing that comprises one or several sealing, this shell have at least one that press in anti-, by for example at least one short pitch coil twine the stiffener of forming and have at least a stretching resistance and torsion, by for example two stiffeners that the winding of pitch cross coils is formed.
These flexible tubings preferably possess following characteristics:
-flexible, be enough to make it on the cylinder between radius 0.5 and 5 meters, to twine;
-inner pressure resistant degree is 100 crust at least, preferably 150 to 1000 crust;
-tensile strength is 10
4To 10
6DaN, preferably 2 * 10
4To 5 * 10
5DaN;
-antitorque limit is 100 to 1000m-daN, and preferably 500 to 5000m-daN;
-rigidity in the time of 20 ℃ is 50 to 1000daN-m
2, preferably 100 to 500daN-m
2
The weight that on flexible tubing, suspends (injector+possible added weight) preferably 10
3To 5 * 10
4N should consider to adapt with tensile strength when selecting this weight.
Such flexible tubing is succeeded in developing by France Petroleum Institute, is just sold by French COFLEXIP company at present.
Fig. 1 is the equipment full figure.
Fig. 2 describes the performance of sprinkler.
Fig. 3 and Fig. 4 describe two embodiment of sprinkler, and this figure is the axial section along vertical plane.
This equipment comprises for example two coking reactors (1) and (2).Reactor (1) is discharging coke, and reactor (2) is forming sedimentation of coke (coking).In order to simplify, do not mark pipeline that receives the hydrocarbon material and the pipeline of discharging volatile matter in the drawings.A rolling wheel or reel (3) are arranged above two reactors, and its turning axle is hollow, is used for supplying water.Water is that what to supply with under pressure by conduit (4) is to supply with by the swivel joint that connects reel and this conduit.Drum shaft is supported by two rigid plate, have only one of them 95) draw in the drawings.The piece plate is bearing on the pedestal (6).Pedestal (6) is furnished with wheel as (7) and (8), said apparatus is gone up at guide rail (9) moved.Said apparatus is supported by a resting support or a reinforcing structure spare of being furnished with I steel beam (10) to (13) especially.The flexible tubing that a kind of physical strength is high (14) is wrapped on the reel, and it connects into the position of reel and all can supply water as changing by web member (not marking) and conduit (4).The other end of pipe (14) is equipped with a kind of decoking instrument, comprises the part (15) that a non-rotating structure (16) and can rotations under the effect of built-in motor.The weight of this instrument is big more stable more.Each injector (17) points to downwards, and each injector (21) is towards the side.Pulley (18) is used for flexible tubing guiding, and, on reel, move back the winding degree regardless of flexible tubing, all make flexible tubing near reactor center line.
As one or several auxiliary flexible tubing (22) of auxiliary hydraulic pressure round-robin, the pistons work of control injector can be made, and the motor operations of drive (15) rotation can be made, be the words of oil motor as this motor.
Working condition can be exemplified below: the top of the initial referred reactors in instrument (15) and (16) (1), open the reactor upper end (19) and lower end (20) that coke is housed, entire tool (14,15,16) is put into reactor by unwinding pipe (14) on reel.The water of supplying with flexible tubing (14) sprays from those injectors (17) that point to downwards under pressure.And along with jet is got a duct on coke layer, described flexible tubing descends in reactor gradually.In case instrument arrives reactor bottom, coke will be transported by its bottom opening (20) discharge and by the coke that known e Foerderanlage will drop on reactor bottom.
Then, can be by a kind of hydraulic pressure circulation means mobile piston, so that can side direction rather than water spray axially.
Coke on the reactor wall comes off, and discharges by opening (20).
Behind this end of processing, instrument is proposed from reactor (1).Go up mobile reel (3) and support thereof at guide rail (9) then, and behind the opening of opening reactor (2), flexible tubing and instrument are sent into reactor (2), make its decoking.Reactor (1) will carry out coking process again.
On Fig. 2, can see instrument.This instrument comprise one with the rigidly connected non-rotating structure of flexible tubing (14) (16) and these two parts of part (15) that can on self longitudinal axes, rotate be by as the bearing of (32) with as the CD-ROM drive motor (35) that is connected of the seal washer of (31,33,34) can be oil motor, under high pressure carry auxiliary liq by conduit (36), under low pressure will assist liquid to see off by conduit (37) then to it.The rotating speed of motor can be by regulating the Flow-rate adjustment of this liquid.These conduits can be by forming pipeline the flexible tubing of part (22) extend and form.Motor (35) drives rotatable portion (15) and rotates, and for example can rotate by the ring gear (39) that a gear driven is rigidly attached on (15).Motor (35) can also be a kind of electric motor.Rotating part (15) comprises a hollow groove (40), and hollow piston (41) can move in this groove.Stopping property is guaranteed as (42) and (43) by piston ring or sealing-ring.By on the piston position shown in Figure 2, communicate with conduit (49), chamber (48) and side spout (21) as space in the conduit of (44).When the pressure of the auxiliary liquid of circulation line (45) descends and/or the pressure of the auxiliary liquid of circulation line (46) when increasing, piston moves down, at this moment conduit (44) is in the position in the face of pipeline (50) and chamber (47), thereby can pass through injector (17) water spray.On the contrary, when the pressure height of the pressure ratio circulation line (46) of circulation line (45), piston will be brought to original position.This functional requirement applies the pressure that is parallel to Lip river plug medullary ray and is engaged in.For example, pressure is applied on the convex shoulder as (51) and (52).
Fig. 3 illustrates another embodiment, in this embodiment, has cancelled circulation line (45).Chamber (53) is by conduit (57) and exterior.Moving of piston controlled by circulation line (46): piston moves when promoting spring (54), makes water can pass through injector (17).After static, piston is got back to its upper position when the pressure of circulation line (46) descends, and at this moment is that injector (21) supplies water.Can use return spring to replace pressure spring, in this case, when making circulation line (46) step-down, arrive high-order on the piston.
According to the embodiment of Fig. 2 and this equipment shown in Figure 3, at the pipeline that need not dispose in the piston as (44).In fact, each posticum can be closed or open to piston itself, as (55) among Fig. 4 and (56); The expression piston is on the mid-way between its two extreme position.
Claims (2)
1, the hydraulic pressure decoking equipment is characterised in that its composition has:
(1) but the hollow flexible tubing of a kind of resistance to compression and shearing stress;
(2) a kind of around the reel device of described flexible tubing of self turning axle, comprise that one provides the device of decoking liquid from an end of flexible tubing, regardless of the winding degree of flexible tubing, all can make aforesaid liquid enter flexible tubing from feedway;
(3) a kind of decoking instrument comprises:
(1) first parts, the other end of described first parts and above-mentioned flexible tubing is connected in the mode of positiver sealing, makes the decoking liquid in the flexible tubing enter first parts,
(2) second parts, described second parts and first element coaxial also rotate around its axle,
(3) some devices that separate with the decoking liquid pipeline and make the rotation of second parts,
(4) hollow piston, it is configured in second components interior, and change its axle of lower edge at least a auxiliary liquid applied pressure and move,
(5) somely begin first and second parts of the instrument that passes, and provide the device of decoking liquid to the hollow gap of piston from flexible tubing,
(6) some devices that are used to carry above-mentioned decoking liquid, in turn decoking liquid is transported at least the first injector along almost being axial direction due from hollow gap, its injection direction almost is axial and opposite with the direction of flexible tubing conveying, perhaps decoking liquid is transferred at least the second injector from hollow gap, its injection direction almost is lateral.Above-mentioned injector is configured on second parts,
(7) have at least one to be different from the hydraulic system that making of decoking liquid circulation line assists liquid to pass first and second parts, this system can make auxiliary liquid mobile piston, so that piston delivered to arbitrarily in the position that makes decoking liquid be passed to first or second injector on arbitrary position
(8) some tightness systems that are used for each circulatory system pressure control.
According to the equipment described in the claim 1, it is characterized in that 2, above-mentioned (7) is had only one
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8817288A FR2640992B1 (en) | 1988-12-26 | 1988-12-26 | |
| FR17288/88 | 1988-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1044115A true CN1044115A (en) | 1990-07-25 |
| CN1027076C CN1027076C (en) | 1994-12-21 |
Family
ID=9373503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89109838 Expired - Fee Related CN1027076C (en) | 1988-12-26 | 1989-12-26 | Decoking equipiment and method of utilization |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP2936418B2 (en) |
| CN (1) | CN1027076C (en) |
| CA (1) | CA2006558C (en) |
| DE (1) | DE3941953C2 (en) |
| FR (1) | FR2640992B1 (en) |
| GB (1) | GB2226389B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073270A (en) * | 2013-03-29 | 2014-10-01 | 上海宝钢化工有限公司 | Decoking device and method thereof for delayed coke coking tower |
| CN105195482A (en) * | 2015-10-10 | 2015-12-30 | 杭州博发机械设备有限公司 | Movable fermentation tank cleaner with rotary spray rod |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5228484A (en) * | 1991-06-20 | 1993-07-20 | Catalyst Technology, Inc. | Air lance reel for catalyst unloading of tubular reactors |
| FR2716458B1 (en) * | 1994-02-22 | 1996-04-12 | Inst Francais Du Petrole | Decoking process and device. |
| EA005338B1 (en) * | 2001-07-23 | 2005-02-24 | Рурпумпен Гмбх | De-coking tool |
| DE50212274D1 (en) * | 2001-07-23 | 2008-06-26 | Ruhrpumpen Gmbh | decoking |
| DE102004020013B3 (en) | 2004-04-21 | 2005-12-22 | Ruhrpumpen Gmbh | Tool for crushing coke |
| DE102007063329B3 (en) * | 2007-12-28 | 2009-06-04 | Ruhrpumpen Gmbh | Tool for crushing coke |
| US8002204B2 (en) | 2007-12-31 | 2011-08-23 | Ruhrpumpen Gmbh | Decoking tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4738399A (en) * | 1985-11-25 | 1988-04-19 | Dresser Industries, Inc. | Decoking tool |
| FR2615198B1 (en) * | 1987-05-13 | 1991-01-11 | Inst Francais Du Petrole | METHOD AND DEVICE FOR HYDRAULIC DECOKING OF OIL COKE |
| IN171582B (en) * | 1987-05-25 | 1992-11-21 | Luoyang Petrochem Eng |
-
1988
- 1988-12-26 FR FR8817288A patent/FR2640992B1/fr not_active Expired - Fee Related
-
1989
- 1989-12-20 DE DE19893941953 patent/DE3941953C2/en not_active Expired - Fee Related
- 1989-12-22 GB GB8929018A patent/GB2226389B/en not_active Expired - Fee Related
- 1989-12-22 CA CA 2006558 patent/CA2006558C/en not_active Expired - Fee Related
- 1989-12-26 JP JP1345029A patent/JP2936418B2/en not_active Expired - Fee Related
- 1989-12-26 CN CN 89109838 patent/CN1027076C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104073270A (en) * | 2013-03-29 | 2014-10-01 | 上海宝钢化工有限公司 | Decoking device and method thereof for delayed coke coking tower |
| CN104073270B (en) * | 2013-03-29 | 2016-06-15 | 上海宝钢化工有限公司 | A kind of coke removing appts. and method thereof postponing burnt coking tower |
| CN105195482A (en) * | 2015-10-10 | 2015-12-30 | 杭州博发机械设备有限公司 | Movable fermentation tank cleaner with rotary spray rod |
| CN105195482B (en) * | 2015-10-10 | 2017-12-12 | 杭州博发机械设备有限公司 | Portable fermentation tank cleaning machine with rotating spray bar |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3941953C2 (en) | 2002-06-20 |
| DE3941953A1 (en) | 1990-07-05 |
| FR2640992B1 (en) | 1993-07-02 |
| GB8929018D0 (en) | 1990-02-28 |
| GB2226389B (en) | 1992-08-26 |
| JPH02227493A (en) | 1990-09-10 |
| CN1027076C (en) | 1994-12-21 |
| GB2226389A (en) | 1990-06-27 |
| CA2006558C (en) | 1999-10-05 |
| CA2006558A1 (en) | 1990-06-26 |
| JP2936418B2 (en) | 1999-08-23 |
| FR2640992A1 (en) | 1990-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1027076C (en) | Decoking equipiment and method of utilization | |
| CN206647620U (en) | The petroleum pipeline clamp system of vibrations can be reduced | |
| CN1257342C (en) | Tunnellers and constructing method thereof | |
| AU672777B2 (en) | Pulling and connecting tool for subsea conduits | |
| CN106838473A (en) | The petroleum pipeline support meanss of size adjustable | |
| CN1150473A (en) | Upper bundle steam generator cleaning system and method | |
| JP2557255B2 (en) | Decoking method and device for delayed coking device using flexible pipe | |
| CN110500125B (en) | Mechanism for driving flexible cable to push resin anchoring agent by multiple motors | |
| CN1435588A (en) | Lubricating system and reforming method thereof | |
| CN110486066B (en) | One-way motor driven automatic resin anchoring agent and anchor cable filling and cutting mechanism | |
| CA2812303C (en) | A single solvent method and machine for separating bitumen from oil sand | |
| CN108356653A (en) | A kind of oil cylinder inner wall polishing and burnishing machine | |
| US4828651A (en) | Decoking process and device | |
| CN210289629U (en) | Perforating machine for coal mine underground water power industry | |
| CN108656537A (en) | A kind of intelligent 3D printing device with the anti-tomography for dredging function | |
| US6702043B2 (en) | Drilling machine with arc-like drill pipe holder | |
| CN1232727A (en) | Tank washing apparatus and method | |
| CN1781778A (en) | Method and device of cleaning stirring drum of concrete agitating truck | |
| CN101837568B (en) | Small steel shot feeding circulator and numerical control metal surface treating machine using the same | |
| EP2441565A1 (en) | Method and apparatus for forming elongated composite tubular | |
| CN2044344U (en) | Automatic producing machine for detonator | |
| CN1071608C (en) | Device for controlling a flow of liquid steel from a ladle to a continuous casting distributor | |
| CN207418571U (en) | Oil-base mud landwaste thermal desorption device | |
| CN1942609A (en) | Process and apparatus for electrogalvanic coating of metal items | |
| JP2552526B2 (en) | Method and apparatus for removing pressurized coke from petroleum coke |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |