CN104772092B - A kind of reactor with compound lining structure - Google Patents

A kind of reactor with compound lining structure Download PDF

Info

Publication number
CN104772092B
CN104772092B CN201510143448.3A CN201510143448A CN104772092B CN 104772092 B CN104772092 B CN 104772092B CN 201510143448 A CN201510143448 A CN 201510143448A CN 104772092 B CN104772092 B CN 104772092B
Authority
CN
China
Prior art keywords
lining
compound
reactor
housing
bitch
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.)
Active
Application number
CN201510143448.3A
Other languages
Chinese (zh)
Other versions
CN104772092A (en
Inventor
陈孙艺
卢学培
刘恒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maoming Gravity Petrochemical Equipment Co Ltd
Original Assignee
Maoming Gravity Petrochemical Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maoming Gravity Petrochemical Equipment Co Ltd filed Critical Maoming Gravity Petrochemical Equipment Co Ltd
Priority to CN201510143448.3A priority Critical patent/CN104772092B/en
Publication of CN104772092A publication Critical patent/CN104772092A/en
Application granted granted Critical
Publication of CN104772092B publication Critical patent/CN104772092B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

A kind of reactor with compound lining structure of the application, include housing and be arranged at the lining of the inwall of the housing, wherein, the lining is compound lining, the compound lining includes at least two lining individual layer, is anchored on the inwall of the housing between each lining individual layer by combining bitch.Compared with prior art, the inwall of housing is connected between each lining individual layer in the compound lining of the application by combining bitch, this structure can be taken into account simultaneously and bear fluid high-speed and wash away, and the plastic deformation better function of compound lining, overall energy compatible deformation expand with heat and contract with cold without ftractureing with housing, also there is simple structure simultaneously, easy to install and easy regulation, protection reactor shell wall and equipment safety operation, the effect in extension reactor life-span, the compound lining is applied to high-temp combustion in shell, reaction, the chemical engineering processes such as heat exchange, the heat-insulation layer being also suitable on housing exterior walls.

Description

A kind of reactor with compound lining structure
Technical field
The application relates to each in petroleum refining and chemical industry, Coal Chemical Industry, chemical fertilizer industry and other various chemical equipments High-temperature high-voltage reaction device technical field, the hydrogenation reactor for more particularly to being reacted or desulfurization reactor skill is planted by catalyst A kind of reactor with compound lining structure in art field.
Background technology
The basic structure of chemical reactor is as shown in figure 1, include cylinder, the end socket for being arranged at cylinder two ends and turnover Material opening, the opening and supporting structure of personnel's detection, cylinder are made up of steel plate or forging.Usually, refine oil hydrogen reactor, take off Reaction of Salmon-Saxl device and petrochemical reactors or Coal Chemical Industry reactor are required for being smoothed out by catalyst guarantee reaction, in order to Ensure the uniformity of reaction, reactor mostly based on vertical installation, multiple in the case of need to set on chemical reactor inwall Put backing layer.
First, because chemical reaction is produced in substantial amounts of heat, or chemical reactor to cause in chemical reactor With maintain chemical reaction to need by the burning of fuel and produce substantial amounts of heat, or in order to cause and tie up in chemical reactor Holding chemical reaction needs to introduce high-temperature medium and contain substantial amounts of heat, damages in order to avoid reactor shell is subject to high temperature action Wound, is needed to arrange heat shield liner nexine on chemical reactor inwall, the heat of high temperature in housing is kept apart with housing.
Secondly, if chemical reactor is imported and exported or its internal air-flow that there is fierceness, in order to prevent air-flow to housing Cause erosive wear, it is also desirable to which wear-resisting lining nexine is set on chemical reactor inwall.Conventional art is spread in reactor wall If hexsteel, hexsteel is welded on inwall, refills Wear-resistant heat insulation lining on the mesh of hexsteel.
Additionally, in order to prevent medium or impurity in chemical reactor from causing to corrode to housing, it is also desirable in chemical reaction Corrosion resistant lining layer is set on device inwall.
Sometimes, the backing layer on chemical reactor inwall need to be provided simultaneously with above two or three kinds of functions, but deposit sometimes Above-mentioned several functions cannot be provided simultaneously with the rigid structure of contradiction, traditional single-layer lining and backing layer.For example, heat-insulated effect Really the rigid strong but poor toughness of good lining, easily produces micro-crack under the effect of housing pressure medium, and medium osmosis crackle is reached Inner walls cause corrosion.Press GB/T 5988-2007《Refractory material heating permanent line change test method》The pottery of detection is fine The heating permanent line change of class heat-barrier material is typically all not more than -3%, and light fire brick is then up to 0.6%, that is to say, that under high temperature not Dilation physical property difference with heat-barrier material is larger, some expansions, some contractions.And 3 meters of chrome molybdenum steel diameter plus Hydrogen reactor 350 DEG C run when, shell inwall girth increment up to 40 millimeters, if the insulated lining such as hexsteel do not have enough Elasticity, it is impossible to meet corresponding deformation, will be failed by drawing crack.
With the exhausted and its in poor quality of crude resources, the corrosion-resistant requirement of petrochemical plant is more and more severeer, with The large-scale development of petrochemical plant and the development of deep processing, worst hot case are increasingly projected, above-mentioned lining effect and housing The aggravation of contradictions of Strength Safety, it is to be looked for novelty that the Conventional countermeasures based on lining material performance and lining construction quality are difficult satisfaction Require.
Therefore, research and develop a kind of there is multifunctional novel lining structure, can take into account simultaneously washed away by fluid high-speed, high temperature Heat-insulated and corrosion resistant reactor linings structure, is applied to include petrochemical industry, Coal Chemical Industry and other various chemical fields Reactor, keeps the safety in production to energy field and economic benefit has important engineering significance.
Content of the invention
The purpose of the application is to avoid weak point of the prior art and provide one kind and can bear stream while taking into account Body washes away at a high speed, plastic deformation better function and with housing expand with heat and contract with cold overall can compatible deformation without ftractureing, while structure is simple The reactor with compound lining structure of single, easy to install and easy regulation.
The purpose of the application is achieved through the following technical solutions:
A kind of reactor with compound lining structure is provided, housing is included and is arranged at the inwall of the housing Lining, wherein, the lining is compound lining, and the compound lining includes at least two lining individual layer, each lining The inwall of the housing is anchored between individual layer by combining bitch.
Wherein, the quantity that single bitch is arranged in the combination bitch is corresponding with the quantity that the lining individual layer is arranged, And described combination bitch in each bitch along the housing direction from inwall to the center line of the housing descending according to The adjustable setting of secondary socket.
Wherein, the single bitch includes bitch head, and the bitch is embedded in which by the bitch head and serves as a contrast accordingly In in individual layer.
Wherein, the compound lining is the composite construction being made up of the lining individual layer of multiple non-metallic materials.
Wherein, the lining individual layer of the non-metallic material includes castable lining individual layer and fiber material lining individual layer, described Castable lining individual layer includes the installed under prestressing precast module type of the element size for being suitable for the housing and is suitable for existing The powder bulk cargo of field cast, the fiber material lining individual layer include the Prefabricated block of the element size for being suitable for the housing Formula and be suitable for scene laying plate.
Wherein, the compound lining is the multi-layer compound structure being made up of the lining individual layer of different materials.
Wherein, thermal insulation layer of the lining individual layer for the surface wear-resistant layer and/or high flexibility of high rigidity.
Wherein, connected by slidably joint between the modules in the lining individual layer.
Wherein, the slidably joint connection includes the wedge structure of interfix and rotatable hinge formula structure.
Wherein, the overall structure of the compound lining includes that the interlayer intermittent configuration of concentric circles and the interlayer of spiral winding connect Any one in continuous structure.
The beneficial effect of the application:A kind of reactor with compound lining structure of the application, includes housing and sets The lining of the inwall of the housing is placed in, wherein, the lining is compound lining, and the compound lining includes at least two Lining individual layer, be anchored on the inwall of the housing by combining bitch between each lining individual layer.Compared with prior art, originally The inwall of housing is connected between each lining individual layer in the compound lining of application by combining bitch, and this structure can be simultaneously Take into account and bear fluid high-speed and wash away, and the plastic deformation better function of compound lining, expand with heat and contract with cold with housing and overall can coordinate change Shape is without ftractureing, while also there is simple structure, regulation easy to install and easy, protection reactor shell wall and equipment safety operation, The effect in extension reactor life-span, the compound lining are applied to the chemical engineering process such as high-temp combustion, reaction, heat exchange in shell, The heat-insulation layer being suitable on housing exterior walls.
Description of the drawings
The application is described further using accompanying drawing, but the embodiment in accompanying drawing does not constitute any limit to the application System, for one of ordinary skill in the art, on the premise of not paying creative work, can be being obtained according to the following drawings Other accompanying drawings.
Fig. 1 is the basic structure schematic diagram of chemical reactor in prior art.
Fig. 2 is a kind of structural representation of the first lining of reactor with compound lining structure of the application.
Fig. 3 is a kind of structural representation of second lining of reactor with compound lining structure of the application.
Fig. 4 is a kind of structural representation of the third lining of reactor with compound lining structure of the application.
Fig. 5 is a kind of structural representation of the 4th kind of lining of reactor with compound lining structure of the application.
Fig. 6 is a kind of structural representation of the 5th kind of lining of reactor with compound lining structure of the application.
Fig. 7 is a kind of structural representation of the one of which heat-insulation layer of reactor with compound lining structure of the application Figure.
Include in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7:
Housing 1, cone 2, end socket 3, large opening 4, flange 5, flange 6, reverse end socket 7, skirt 8,
Inwall 9, lining nexine 10, lining surface layer 11,
Flexible liners 12, wear resistance lining 13 and wear resistance lining 14,
Hinge head backing layer 16, hinge head backing layer 17, hinge head backing layer 18,
Hinge head heat-insulation layer 19, hinge head heat-insulation layer 20,
Spiral winding lining inner end 21, spiral winding lining outer end 22,
Big section 23 of bitch, weld seam 24, bitch stage casing 25, bitch segment 26, bitch head 27.
Specific embodiment
With the following Examples the application is described in further detail.
A kind of specific embodiment of reactor with compound lining structure of the application, shown in Figure 1, its structure Include housing 1 and be arranged at the lining of the inwall 9 of the housing 1, in addition, also include that other shown in Fig. 1 are existing Technical characteristic.
The application is theed improvement is that:The lining is compound lining, and the compound lining includes at least two Lining individual layer, be anchored on the inwall of the housing by combining bitch between each lining individual layer.Compared with prior art, originally The inwall 9 of housing is connected between each lining individual layer in the compound lining of application by combining bitch, and this structure can be same When take into account and bear fluid high-speed and wash away, and the plastic deformation better function of compound lining is expanded with heat and contract with cold with housing and overall can be coordinated Deformation is without ftractureing, while also having simple structure, regulation easy to install and easy, protection reactor shell wall and equipment safety fortune OK, the effect in extension reactor life-span, the compound lining are applied to the chemical engineering process such as high-temp combustion, reaction, heat exchange in shell, The heat-insulation layer being also suitable on housing exterior walls.
Specifically, the quantity that single bitch is arranged in the combination bitch is relative with the quantity that the lining individual layer is arranged Should, and described combination bitch in each bitch along the housing center line from inwall 9 to the housing direction by greatly to The little adjustable setting being socketed successively.The single bitch includes bitch head 27, and the bitch passes through the bitch head 27 It is embedded in its corresponding lining individual layer.Referring specifically to shown in Fig. 6, combination bitch is made up of three bitch, specially large, medium and small Three sections, be fastenedly connected by weld seam 24 between big section 23 of shell wall 9 and bitch, in the middle of big section 23 of the insertion of bitch stage casing 25 bitch and Can elastic telescopic, in the middle of the insertion of bitch segment 26 bitch stage casing 25 and can elastic telescopic, the theory of mechanics of this telescoping mechanism Similar to the handle of Folding umbrella, every bitch all passes through bitch head 27 and buries in corresponding lining individual layer, with corresponding lining Individual layer can be moved with microdisplacement together.It also is provided with thermal insulation layer between bitch is large, medium and small three sections, or the stage casing of bitch and little The nonmetallic manufactures of Duan Caiyong, both bottoms are closing blind holes, to reduce the heat for being delivered to shell wall 9 by bitch.
Specifically, the compound lining is the composite construction being made up of the lining individual layer of multiple non-metallic materials.The non-gold The lining individual layer of category material includes that castable lining individual layer and fiber material lining individual layer, the castable lining individual layer include being suitable for In the element size of the housing installed under prestressing precast module type and be suitable for the powder bulk cargo of cast-in-site, described Fiber material lining individual layer includes the precast module type of the element size for being suitable for the housing and is suitable for the plate of scene laying Material.As shown in figure 4, its structure includes hinge head backing layer 16, hinge head backing layer 17, hinge head backing layer 18.Precast module type can lead to Cross size surplus and realize installed under prestressing, make the prestressing force produced during installation offset the operational stresses induced caused during operation, if to need Installed under prestressing is wanted to depend on the thermal expansion amount of its housing when reactor operates operation, prestressed size is by circumferential decrement To embody, calculated by design and determined.Installed under prestressing module can be in multilayer lining in one or more layers, the prestressing force of each layer Size can be with unequal.
Specifically, the multi-layer compound structure that the compound lining is made up of the lining individual layer of commaterial, such as Fig. 2 institutes Show, on shell wall 9, be provided with the lining nexine 10 for being close to shell wall, lining surface layer 11 is set on nexine again.
Specifically, the compound lining is the multi-layer compound structure being made up of the lining individual layer of different materials.Wherein, described The complex form of lining is the sandwich construction form of different materials, and the laying of different material layer includes one after the other coversion material If if sandwich construction, and if middle the third material paving of dried layer of dried layer second material paving of the first material shop fixtures dried layer Sandwich construction.As shown in figure 3, its structure includes flexible liners 12, wear-resisting wedge head lining 13 and wear-resisting wedge head lining 14.
Specifically, thermal insulation layer of the lining individual layer for the surface wear-resistant layer and/or high flexibility of high rigidity.
Specifically, connected by slidably joint between the modules in the lining individual layer.This slidably joint connect Connect wedge structure and the rotatable hinge formula structure including interfix.Wedge structure is more suitable for along the flexible of the long straight wall face of housing. As shown in figure 3, wear resistance lining 13 and wear resistance lining 14 by tapered end formed can relatively micro straight-line displacement up and down elasticity Structure, while two tapered ends are close to mutually under the effect of reactor internal pressure, extends heat leak to the path of shell wall.And Hinge formula structure is more suitable for the rotation along housing curved wall.As shown in fig. 7, hinge head heat-insulation layer 19 and hinge head heat-insulation layer 20 pass through Hinge formula structure connects.
Specifically, the overall structure of the compound lining includes, the interlayer intermittent configuration of concentric circles as shown in Figure 4 and such as The interlayer continuous structure of any one in the interlayer continuous structure of the spiral winding shown in Fig. 5, wherein spiral winding, in housing 1 Inwall 9 on be close to spiral winding lining inner end 21, by gradually spiral winding until the required lining number of plies or thickness.
The method for designing of the compound lining of reactor includes:
(1) first according to the surface wear-resistant layer and the thermal insulation layer of the inside of mixture condition initial option lining;Secondly, it is by logical Normal analysis of Heat Transfer design wearing layer and the thickness of thermal insulation layer, complete Preliminary design.
(2)Again, according to diameter increment during effect of heat insulation calculating reactor enclosure thermal expansion and girth increment, according to Whether the girth increment of the girth increment multilevel iudge thermal insulation layer of housing can be consensus therewith, otherwise, should reselect heat-insulated Layer material is set up the heat-insulated number of plies and is recalculated, until both girth increments consensus.
(3)Whether the girth increment for calculating wearing layer in the same manner can be consensus with the girth increment of thermal insulation layer, otherwise, Ying Chong Newly select wear-resisting layer material or set up the wear-resisting number of plies to recalculate, until both girth increments are consensus, complete to optimize Design.
(4)Lining bitch is designed according to the number of plies and thickness of wearing layer and thermal insulation layer, is mainly to determine that suitable bitch is high Degree, makes bitch head 27 fall in corresponding backing layer.When should be taken into account during THICKNESS CALCULATION that reactor runs, displacement deformation causes Thickness change.
(5)Can be carried out including including temperature and pressure and weight load to optimizing structure by two dimensional finite element stress analysis Numerical Validation analysis, confirm optimization design reliability.
Finally it should be noted that above example is only in order to illustrating the technical scheme of the application, rather than the application is protected The restriction of shield scope, although having made to explain to the application with reference to preferred embodiment, one of ordinary skill in the art should Work as understanding, the technical scheme of the application can be modified or equivalent, without deviating from the reality of technical scheme Matter and scope.

Claims (9)

1. a kind of reactor with compound lining structure, includes housing and is arranged at the lining of the inwall of the housing, its It is characterised by:The lining is compound lining, and the compound lining includes at least two lining individual layer, each lining list The inwall of the housing is anchored on by combining bitch between layer, in the combination bitch quantity of single bitch setting with described Lining individual layer arrange quantity corresponding, and described combination bitch in each bitch along the housing inwall to the housing Center line the descending adjustable setting being socketed successively in direction.
2. a kind of reactor with compound lining structure according to claim 1, it is characterised in that:The single bitch Bitch head is included, and the bitch is embedded in its corresponding lining individual layer by the bitch head.
3. a kind of reactor with compound lining structure according to claim 1, it is characterised in that:The compound lining It is the composite construction being made up of the lining individual layer of multiple non-metallic materials.
4. a kind of reactor with compound lining structure according to claim 3, it is characterised in that:The non-metallic material The lining individual layer of matter includes that castable lining individual layer and fiber material lining individual layer, the castable lining individual layer include being suitable for institute The installed under prestressing precast module type for stating the element size of housing and the powder bulk cargo for being suitable for cast-in-site, the fiber Material lining individual layer includes the precast module type of the element size for being suitable for the housing and is suitable for the plate of scene laying.
5. a kind of reactor with compound lining structure according to claim 1, it is characterised in that:The compound lining It is the multi-layer compound structure being made up of the lining individual layer of different materials.
6. a kind of reactor with compound lining structure according to claim 1, it is characterised in that:The lining individual layer Thermal insulation layer for the surface wear-resistant layer and/or high flexibility of high rigidity.
7. a kind of reactor with compound lining structure according to claim 1, it is characterised in that:The lining individual layer In modules between by slidably joint connect.
8. a kind of reactor with compound lining structure according to claim 7, it is characterised in that:Described slidably connect Head connection includes the wedge structure of interfix and rotatable hinge formula structure.
9. a kind of reactor with compound lining structure according to claim 1, it is characterised in that:The compound lining Overall structure include in the interlayer intermittent configuration of concentric circles and the interlayer continuous structure of spiral winding any one.
CN201510143448.3A 2015-03-30 2015-03-30 A kind of reactor with compound lining structure Active CN104772092B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510143448.3A CN104772092B (en) 2015-03-30 2015-03-30 A kind of reactor with compound lining structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510143448.3A CN104772092B (en) 2015-03-30 2015-03-30 A kind of reactor with compound lining structure

Publications (2)

Publication Number Publication Date
CN104772092A CN104772092A (en) 2015-07-15
CN104772092B true CN104772092B (en) 2017-03-15

Family

ID=53614043

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510143448.3A Active CN104772092B (en) 2015-03-30 2015-03-30 A kind of reactor with compound lining structure

Country Status (1)

Country Link
CN (1) CN104772092B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017062356A1 (en) * 2015-10-05 2017-04-13 Sunedison, Inc. Isostatic graphite liner for fluidized bed reactors
CN105664813A (en) * 2016-04-14 2016-06-15 广西柳州中嘉知识产权服务有限公司 Reaction still lining
CN105924712A (en) * 2016-04-14 2016-09-07 广西柳州中嘉知识产权服务有限公司 Corrosion resistant reactor
CN106051781B (en) * 2016-07-25 2018-06-15 宜兴市中环耐火材料有限公司 A kind of refuse-incinerated waste heat boiler suspension hook watt brick

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103769024A (en) * 2014-02-21 2014-05-07 胡光雄 Pneumatic or hydraulic agitating compounded anti-corrosion, wear-resisting and high-temperature-resisting reaction kettle
CN204122108U (en) * 2014-10-22 2015-01-28 深圳市威仕环保科技有限公司 A kind of energy-saving heat preserving composite coating overlaying on high-temperature high-pressure reaction kettle
CN204165029U (en) * 2014-08-25 2015-02-18 骏马石油装备制造有限公司 A kind of high pressure injection steam boiler radiant section complex heat-preservation device
CN204602167U (en) * 2015-03-30 2015-09-02 茂名重力石化机械制造有限公司 A kind of reactor with compound lining structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10197161A (en) * 1997-01-13 1998-07-31 Toshiba Ceramics Co Ltd Veneering of lining refractory material and work execution method therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103769024A (en) * 2014-02-21 2014-05-07 胡光雄 Pneumatic or hydraulic agitating compounded anti-corrosion, wear-resisting and high-temperature-resisting reaction kettle
CN204165029U (en) * 2014-08-25 2015-02-18 骏马石油装备制造有限公司 A kind of high pressure injection steam boiler radiant section complex heat-preservation device
CN204122108U (en) * 2014-10-22 2015-01-28 深圳市威仕环保科技有限公司 A kind of energy-saving heat preserving composite coating overlaying on high-temperature high-pressure reaction kettle
CN204602167U (en) * 2015-03-30 2015-09-02 茂名重力石化机械制造有限公司 A kind of reactor with compound lining structure

Also Published As

Publication number Publication date
CN104772092A (en) 2015-07-15

Similar Documents

Publication Publication Date Title
CN104772092B (en) A kind of reactor with compound lining structure
CN204174222U (en) The repair structure of iron-making heat wind furnace hot air duct and repairing mould thereof
CN201273563Y (en) Steam-cooling center barrel
CN204602167U (en) A kind of reactor with compound lining structure
CN204939514U (en) Blast funnace hot blast stove hot air duct masonry construction
WO2013139172A1 (en) Heat exchanger
CN109058635A (en) Prefabricated thermal insulation bilayer bend pipe and preparation method thereof
RU2670221C1 (en) Heat protective coating and superhigh-temperature cold-wall suspension layer hydrogenation reactor therewith
CN101709819A (en) Non-metallic expansion joint with stainless steel full-floating composite deflector
CN208373355U (en) High-temperature and high-pressure wearable insulated lining efficient cyclone separator for coal gasification furnace
CN218459531U (en) Series-tube reactor with jacket flexible closing-in
CN205361309U (en) Reactor with build -up welding lining structure
CN213208719U (en) Sleeve type heat exchanger for recovering waste heat of ascending pipe of coke oven
CN113842865A (en) Series-tube reactor with jacket flexible closing-in
CN103409573B (en) Masonry structure of refractory material in hot-blast stove warm-air pipe ripple compensator
CN201439996U (en) Flue gas producer
CN201258722Y (en) Vehicle-mounted steam-filling boiler with 18t/h evaporation
CN101353287B (en) Sealing method of petrifaction ethylene pyrolysis furnace tube and furnace roof liner portion
CN113028148A (en) Internal sliding pipe support system and manufacturing method thereof
CN105478066B (en) A kind of reactor with accumulated weld inside structure
CN101408097B (en) Stationary type steam injecting boiler with evaporation of 30 ton / hour
CN212804731U (en) Hot-blast surrounding pipe with heat-resistant core pipe
CN212156092U (en) High-wear-resistant lining pipe section segmented joint structure of flexible coking gas conveying pipeline
CN216715560U (en) Wear-resistant and high-temperature-resistant metal expansion joint for inclined tube or vertical tube of catalytic reverse recycling system
CN108775451A (en) A kind of two-layer compound internal lining pipe

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: 525024 Guangdong City, Maoming Province Ring West Road, No. 91

Applicant after: Maoming gravity Petrochemical Equipment Co Ltd

Address before: 525024 Maoming City, Guangdong Province West Road, Maoming City, the gravity of the Petrochemical Machinery Manufacturing Co., Ltd.,

Applicant before: The Challenge Petrochemical Machinery Corporation

COR Change of bibliographic data
C14 Grant of patent or utility model
GR01 Patent grant