CN113680282A - Reactor feed nozzle capable of being detached on line - Google Patents

Reactor feed nozzle capable of being detached on line Download PDF

Info

Publication number
CN113680282A
CN113680282A CN202110927374.8A CN202110927374A CN113680282A CN 113680282 A CN113680282 A CN 113680282A CN 202110927374 A CN202110927374 A CN 202110927374A CN 113680282 A CN113680282 A CN 113680282A
Authority
CN
China
Prior art keywords
fixed cylinder
conveying pipe
reactor feed
feed nozzle
nozzle
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.)
Pending
Application number
CN202110927374.8A
Other languages
Chinese (zh)
Inventor
田建锋
陈向平
洪晓煜
陈家岭
夏永胜
张明耀
杨孝林
余成武
马菲
王二虎
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.)
Petrochina Co Ltd
Original Assignee
Petrochina 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 Petrochina Co Ltd filed Critical Petrochina Co Ltd
Priority to CN202110927374.8A priority Critical patent/CN113680282A/en
Publication of CN113680282A publication Critical patent/CN113680282A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J4/00Feed or outlet devices; Feed or outlet control devices
    • B01J4/001Feed or outlet devices as such, e.g. feeding tubes
    • B01J4/002Nozzle-type elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/26Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G29/00Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
    • C10G29/20Organic compounds not containing metal atoms
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G29/00Refining of hydrocarbon oils, in the absence of hydrogen, with other chemicals
    • C10G29/20Organic compounds not containing metal atoms
    • C10G29/205Organic compounds not containing metal atoms by reaction with hydrocarbons added to the hydrocarbon oil
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10GCRACKING 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
    • C10G2400/00Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/02Gasoline

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

The invention relates to the technical field of feeding nozzles, in particular to a reactor feeding nozzle capable of being disassembled on line, which is used for solving the problems that in the prior art, the blocked feeding nozzle can be cleaned only by stopping the operation of a reactor, so that the blocked feeding nozzle is inconvenient to clean, and the maintenance cost is high. The conveying pipe comprises an external connecting body and a conveying pipe, wherein one end of the external connecting body is connected with a fixed cylinder, the conveying pipe sequentially penetrates through the external connecting body and the fixed cylinder, a movable nut is mounted on the conveying pipe, the conveying pipe is connected with the movable nut through threads, a hand wheel is mounted on the movable nut, a moving mechanism is further mounted between the fixed cylinder and the conveying pipe, a nozzle is integrally formed at the front end of the conveying pipe, and a plurality of feeding holes are formed in the nozzle. According to the invention, the conveying pipe can be driven to retreat from the connecting body and the fixed cylinder by rotating the hand wheel, so that the blocked feeding nozzle can be cleaned in a state of no shutdown.

Description

Reactor feed nozzle capable of being detached on line
Technical Field
The invention relates to the technical field of feed nozzles, in particular to the technical field of feed nozzles in petroleum drilling, and more particularly relates to a reactor feed nozzle capable of being disassembled on line.
Background
The ionic liquid reactor of the process adopts a pipeline form, the ionic liquid catalyst and the four carbon raw materials are mixed from bottom to top in the reactor and then undergo full contact reaction with a filler in the reactor to generate the high-octane gasoline with the octane number of more than or equal to 96 (research method), the reactors are divided into two groups and adopt a parallel feeding mode, and the ionic liquid is produced by two reactors in a series mode.
The structure of a raw material ion liquid reactor feeding nozzle is a disc type, carbon four raw materials enter the reactor through a pipeline, an inner circle coil pipe and an outer circle coil pipe are adopted in the reactor, holes with the diameter of 5mm are distributed on the coil pipes, the raw materials are sprayed through the holes with the diameter of 5mm and are contacted with an ion liquid catalyst to react to generate gasoline, the currently adopted carbon four raw material feeding nozzle is a reactor built-in nozzle, the solid slag content of an ion liquid catalyst system is generally high due to the characteristics that the ion liquid has high viscosity and is easy to slag, active components (solid state) injected for maintaining the activity of the ion liquid are low in solubility in the ion liquid, and the like, solid substances in the ion liquid are easy to attach to the surface of the nozzle in the operation process of the device, the small holes of the raw material nozzle are gradually blocked, the device cannot normally feed, the built-in feeding nozzle cannot be cleaned and dredged in the operation process of the device, once the blockage is seriously processed, when the reactor is disassembled, the whole reactor needs to be disassembled in a segmented mode, the disassembling and assembling difficulty is high, the investment is large, the long-period operation of the reactor is seriously influenced, and the investment of manpower, material resources and financial resources is large.
In summary, the feeding nozzle of the conventional ionic liquid reactor has the following problems:
1. ion liquid method technology is in normal production process, along with the continuous contact of four raw materials of carbon and ionic liquid, can block up current disc type feed nozzle because impurity or meeting water that the system material exists generate the salt material, lead to device production load to descend, can only halt production when serious, clear up the nozzle through opening the reactor, if meet four raw materials of carbon machine pump trouble, the maloperation, abnormal phenomena such as raw materials interrupt, ionic liquid catalyst can get into the nozzle rapidly, get into four raw materials of carbon feeding pipeline in, cause nozzle and pipe blockage, lead to four raw materials of carbon can't get into in the reactor.
2. The original structure can not realize the on-line cleaning of the nozzle and the pipeline of the device during the normal operation, the nozzle and the pipeline can not be dredged and cleaned by any means after being blocked, the nozzle and the pipeline can not be cleaned during the operation of the device, the device can only be waited for to stop feeding, and the disassembly and cleaning can be carried out after the production is stopped, thereby forming a great restriction factor for the long-period operation of the device.
3. After the feeding nozzle is blocked in the original structure, the reactor can be opened only by sections, and the nozzle is removed by adopting complex modes such as a crane and the like and then cleaned, so that the cleaning means is complicated, and the input overhaul cost and the labor cost are high.
In order to solve the problems of the feed nozzle of the original ionic liquid reactor in the prior art, the feed nozzle of the reactor, which can be cleaned without stopping the operation of a device after the feed nozzle is blocked, is provided.
Disclosure of Invention
Based on the problems, the invention provides an on-line detachable reactor feeding nozzle, which is used for solving the problems that the blocked feeding nozzle can be cleaned only by stopping the operation of a reactor in the prior art, so that the blocked feeding nozzle is inconvenient to clean, and the maintenance cost is high. According to the invention, the feeding nozzle is changed into an external insertion type, when the feeding nozzle is blocked, the hand wheel can be rotated, the hand wheel drives the moving nut to rotate, the conveying pipe can retreat from the connecting body and the fixed cylinder under the limitation of the moving mechanism, and then the retreated conveying pipe is cleaned, so that the blocked feeding nozzle can be cleaned in a state without shutdown.
The invention specifically adopts the following technical scheme for realizing the purpose:
the utility model provides a reactor feed nozzle that can dismantle on line, includes external connector and conveyer pipe, the one end of external connector is connected with solid fixed cylinder, the conveyer pipe passes external connector and solid fixed cylinder in proper order, install the removal nut on the conveyer pipe, the conveyer pipe passes through threaded connection with the removal nut, install the hand wheel on the removal nut, solid fixed cylinder still installs moving mechanism with the conveyer pipe intervally, the front end integrated into one piece of conveyer pipe has the nozzle, it has a plurality of feed ports to open on the nozzle, the rear end of conveyer pipe is equipped with the hose connector.
The external connector comprises a gate valve, one side of the gate valve is connected with a flange, the other side of the gate valve is connected with a sealing element, and the sealing element is connected with the fixed cylinder.
The sealing element comprises a sealing body connected between the gate valve and the fixed cylinder, a filler is arranged between the sealing body and the conveying pipe, and a gland in contact with the filler is arranged on the sealing body.
The sealing body is provided with a pressure relief opening, and a plug is arranged in the pressure relief opening.
The moving mechanism comprises a guide groove formed in the conveying pipe, the guide groove is formed in the length direction of the conveying pipe, and a fixing piece extending into the guide groove is installed on the fixing cylinder.
The mounting is fixing bolt, fixing bolt installs on the solid fixed cylinder and extends to the guide way in, fixing bolt is last to be installed and to be located the solid fixed cylinder outside and inboard fixation nut.
The depth of the guide groove is equal to the depth of the thread.
The feeding holes on the same longitudinal section are spaced by 120 degrees.
The invention has the following beneficial effects:
(1) according to the invention, the feeding nozzle is changed into an external plug-in type, when the feeding nozzle is blocked, the hand wheel can be rotated, the hand wheel drives the moving nut to rotate, the conveying pipe can retreat from the connecting body and the fixing cylinder under the limitation of the moving mechanism, and then the retreated conveying pipe is cleaned, so that the blocked feeding nozzle can be cleaned under the state of no shutdown, and the blocked feeding nozzle is more conveniently cleaned, so that the maintenance cost and the corresponding labor cost can be reduced, meanwhile, the long-period operation of the device is further ensured, and the concept of safety, stability and benefit of refining production is attached.
(2) The sealing body is provided with the pressure relief port and the packing gland, and the pressure relief port and the packing gland are used for relieving pressure in the dismounting process, so that the ion liquid can be prevented from being sprayed out to hurt people, and the personal safety of workers can be guaranteed.
(3) When the hand wheel drives the movable nut to rotate, the screw rod only moves but does not rotate because the fixed bolt extends into the guide groove, so that the normal operation of the whole device is not influenced.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic side sectional view of a nozzle of the present invention;
FIG. 3 is a schematic side sectional view of a belt guide groove of the conveyor of the present invention;
reference numerals: the device comprises a nozzle 1, a feed hole 2, a delivery pipe 3, a flange 4, a gate valve 5, a sealing body 6, a fixing cylinder 7, a fixing nut 8, a fixing bolt 9, a guide groove 10, a movable nut 11, a hand wheel 12, a gland 13, a filler 14, a plug 15 and a pressure relief opening 16.
Detailed Description
For a better understanding of the present invention by those skilled in the art, the present invention will be described in further detail below with reference to the accompanying drawings and the following examples.
Example 1:
as shown in fig. 1-3, a reactor feeding nozzle capable of being detached on line comprises an external connector and a delivery pipe 3, one end of the external connector is connected with a fixed cylinder 7, the delivery pipe 3 sequentially penetrates through the external connector and the fixed cylinder 7, a movable nut 11 is installed on the delivery pipe 3, the delivery pipe 3 is in threaded connection with the movable nut 11, a hand wheel 12 is installed on the movable nut 11, a moving mechanism is further installed between the fixed cylinder 7 and the delivery pipe 3, a nozzle 1 is integrally formed at the front end of the delivery pipe 3, a plurality of feeding holes 2 are formed in the nozzle 1, and a hose connector is arranged at the rear end of the delivery pipe 3.
Preferably, the external connector includes gate valve 5, one side of gate valve 5 is connected with flange 4, the opposite side is connected with the sealing member, the sealing member is connected with solid fixed cylinder 7, the sealing member is including connecting seal 6 between gate valve 5 and solid fixed cylinder 7, install packing 14 between seal 6 and conveyer pipe 3, install the gland 13 with packing 14 contact on the seal 6, it has pressure release mouth 16 to open on the seal 6, install and block up 15 in the pressure release mouth 16, it has pressure release mouth 16 and is equipped with packing 14 gland 13 to open on the seal 6, be used for dismantling the in-process pressure release, can prevent that the ionic liquid from spouting the injury people, thereby can guarantee staff's personal safety.
The working principle is as follows: the outer wall of a feed inlet of a reactor is connected with a welding flange 4 of a nozzle 1, the rear end of a metal conveying pipe 3 is connected with a raw material hose, when the reactor is used, a raw material valve of a gate valve 5 connected with the metal hose is firstly opened, then a hand wheel 12 is rotated to enable the conveying pipe 3 to enter the reactor along a channel of the gate valve 5, raw materials are sprayed out from a feed hole 2 of the conveying pipe 3 to realize feeding to the reactor, if the feed hole 2 of the nozzle 1 is blocked 15 and can not be fed, when the feeding nozzle 1 needs to be cleaned, the hand wheel 12 can be rotated, the hand wheel 12 drives a movable nut 11 to rotate, because the movable nut 11 is in threaded connection with the conveying pipe 3, the conveying pipe 3 can move while rotating, because the movable mechanism limits the conveying pipe 3, the conveying pipe 3 finally only moves without rotating, the conveying pipe 3 can be outwards withdrawn from the reactor, when the conveying pipe 3 outwards withdraws to the outer side of a flashboard of the gate valve 5, close gate valve 5, carry out the pressure release through pressure release mouth 16, take out the clearance with conveyer pipe 3 after the pressure release is accomplished to can realize clearing up feed nozzle 1 that is blockked up 15 under the state that does not stop up, owing to be convenient for more clear up feed nozzle 1 that is blockked up 15, so can reduce cost of maintenance and corresponding human cost, further ensured the long period running of device simultaneously, the theory of laminating refining production safety, steady, benefit.
Example 2:
as shown in fig. 1-3, on the basis of the above embodiment 1, this embodiment provides a preferable structure of the moving mechanism, the moving mechanism includes a guide groove 10 opened on the conveying pipe 3, the guide groove 10 is disposed along the length direction of the conveying pipe 3, a fixing member extending into the guide groove 10 is mounted on the fixing cylinder 7, the fixing member is a fixing bolt 9, the fixing bolt 9 is mounted on the fixing cylinder 7 and extends into the guide groove 10, fixing nuts 8 located on the outer side and the inner side of the fixing cylinder 7 are mounted on the fixing bolt 9, and the depth of the guide groove 10 is equal to the depth of the thread.
In this embodiment: when the hand wheel 12 drives the movable nut 11 to rotate, because the fixing bolt 9 extends to the guide groove 10, the fixing bolt 9 can move along the length direction of the guide groove 10, so the screw rod can only move without rotating, thereby the normal operation of the whole device can not be influenced, wherein, the fixing bolt 9 is a flat-head bolt, the front end flat head is embedded into the guide groove 10 of the conveying pipe 3, and a certain gap is kept between the front end flat head and the conveying pipe 3.
The feeding holes 2 on the same longitudinal section are arranged at intervals of 120 degrees, so that the reactor can be fed more uniformly.
The above is an embodiment of the present invention. The embodiments and specific parameters in the embodiments are only for the purpose of clearly illustrating the process of verifying the invention, and are not intended to limit the scope of the invention, which is defined by the claims.

Claims (8)

1. An on-line detachable reactor feed nozzle, which is characterized in that: including external connector and conveyer pipe (3), the one end of external connector is connected with solid fixed cylinder (7), conveyer pipe (3) pass external connector and solid fixed cylinder (7) in proper order, install removal nut (11) on conveyer pipe (3), conveyer pipe (3) pass through threaded connection with removal nut (11), install hand wheel (12) on the removal nut (11), still install moving mechanism between solid fixed cylinder (7) and conveyer pipe (3), the front end integrated into one piece of conveyer pipe (3) has nozzle (1), it has a plurality of feed ports (2) to open on nozzle (1), the rear end of conveyer pipe (3) is equipped with the hose connection mouth.
2. An on-line detachable reactor feed nozzle according to claim 1, characterized in that: the external connector comprises a gate valve (5), one side of the gate valve (5) is connected with a flange (4), the other side of the gate valve is connected with a sealing element, and the sealing element is connected with a fixed cylinder (7).
3. An on-line detachable reactor feed nozzle according to claim 2, characterized in that: the sealing element comprises a sealing body (6) connected between a gate valve (5) and a fixed cylinder (7), a packing (14) is installed between the sealing body (6) and the conveying pipe (3), and a gland (13) in contact with the packing (14) is installed on the sealing body (6).
4. An on-line detachable reactor feed nozzle according to claim 3, characterized in that: the sealing body (6) is provided with a pressure relief opening (16), and a plug (15) is arranged in the pressure relief opening (16).
5. An on-line detachable reactor feed nozzle according to claim 1, characterized in that: the moving mechanism comprises a guide groove (10) formed in the conveying pipe (3), the guide groove (10) is arranged along the length direction of the conveying pipe (3), and a fixing piece extending into the guide groove (10) is installed on the fixing barrel (7).
6. An on-line detachable reactor feed nozzle according to claim 5, characterized in that: the mounting is fixing bolt (9), fixing bolt (9) are installed on a fixed cylinder (7) and extend to guide way (10), install on fixing bolt (9) and be located fixed cylinder (7) outside and inboard fixation nut (8).
7. An on-line detachable reactor feed nozzle according to claim 5, characterized in that: the depth of the guide groove (10) is equal to the depth of the thread.
8. An in-line detachable reactor feed nozzle according to any one of claims 1 to 7, characterized in that: a plurality of the feeding holes (2) on the same longitudinal section are spaced by 120 degrees.
CN202110927374.8A 2021-08-12 2021-08-12 Reactor feed nozzle capable of being detached on line Pending CN113680282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110927374.8A CN113680282A (en) 2021-08-12 2021-08-12 Reactor feed nozzle capable of being detached on line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110927374.8A CN113680282A (en) 2021-08-12 2021-08-12 Reactor feed nozzle capable of being detached on line

Publications (1)

Publication Number Publication Date
CN113680282A true CN113680282A (en) 2021-11-23

Family

ID=78579656

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110927374.8A Pending CN113680282A (en) 2021-08-12 2021-08-12 Reactor feed nozzle capable of being detached on line

Country Status (1)

Country Link
CN (1) CN113680282A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580300A (en) * 1969-07-25 1971-05-25 Grace W R & Co Vacuum apparatus and snorkel nozzle
CN101724109A (en) * 2008-10-30 2010-06-09 中国石油化工股份有限公司 Device of catalyst feed pipeline for olefin polymerization process
CN206701559U (en) * 2016-09-28 2017-12-05 洛阳德明石化设备有限公司 A kind of liquid-injection equipment that can be dismantled online
CN108686588A (en) * 2018-06-07 2018-10-23 超达阀门集团股份有限公司 It is a kind of can Hand scarf catalyst injection device
CN208503559U (en) * 2018-06-07 2019-02-15 超达阀门集团股份有限公司 It is a kind of can to pressure system injected media and can on-line maintenance device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580300A (en) * 1969-07-25 1971-05-25 Grace W R & Co Vacuum apparatus and snorkel nozzle
CN101724109A (en) * 2008-10-30 2010-06-09 中国石油化工股份有限公司 Device of catalyst feed pipeline for olefin polymerization process
CN206701559U (en) * 2016-09-28 2017-12-05 洛阳德明石化设备有限公司 A kind of liquid-injection equipment that can be dismantled online
CN108686588A (en) * 2018-06-07 2018-10-23 超达阀门集团股份有限公司 It is a kind of can Hand scarf catalyst injection device
CN208503559U (en) * 2018-06-07 2019-02-15 超达阀门集团股份有限公司 It is a kind of can to pressure system injected media and can on-line maintenance device

Similar Documents

Publication Publication Date Title
CN111701937A (en) Continuous processing device for surface treatment and cutting forming of refined monocrystalline silicon
CN113680282A (en) Reactor feed nozzle capable of being detached on line
CN209324779U (en) A kind of cooling oil cylinder of water
CN103301668A (en) Electroless differential pressure type automatic sewage cleaning filter
CN208493825U (en) A kind of exhaust emission combined removal device peculiar to vessel
CN215429777U (en) Outer wall PE spraying device for processing inner and outer epoxy composite plastic-coated composite steel pipe
CN210252018U (en) Annular spraying device and stirring device comprising same
CN209294476U (en) A kind of three-way valve for preventing from blocking
CN204163693U (en) Paraffin remover filling apparatus
CN108686588B (en) Catalyst injection device capable of being cleaned on line
CN209211933U (en) A kind of equipment of novel environment-friendly building glue injection
CN202202022U (en) Novel down feather processing and discharging device
CN111411974A (en) Rotatable high-pressure water gun structure in soil bin of shield tunneling machine
CN214576918U (en) Device is put in to granular solid corrosion inhibitor ordinary pressure
CN216344089U (en) High-efficient two-core valve
CN219216875U (en) Dustproof belt head sealing cover sprays
CN211676882U (en) Dust suppression device for crusher
CN216063807U (en) Special catalyst feeding governing system
CN219840690U (en) Colliery working face many dust removal points dust fall system
CN203315841U (en) Electroless type differential pressure type automatic sewage removing filter
CN202061911U (en) Spraying pipe assembly of drawing mill
CN208261105U (en) A kind of novel wear resistant jet pipe
CN211517379U (en) Pressurized dismounting tool for through ball indicator
CN215610532U (en) Spray gun device for online maintenance outside desulfurizing tower
CN108906352A (en) A kind of adjustable flow nozzle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination