CN106582363A - Double-stirring device of thermal cracking reaction kettle - Google Patents

Double-stirring device of thermal cracking reaction kettle Download PDF

Info

Publication number
CN106582363A
CN106582363A CN201710080569.7A CN201710080569A CN106582363A CN 106582363 A CN106582363 A CN 106582363A CN 201710080569 A CN201710080569 A CN 201710080569A CN 106582363 A CN106582363 A CN 106582363A
Authority
CN
China
Prior art keywords
reaction kettle
shaft
double
stirring device
stirring
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
CN201710080569.7A
Other languages
Chinese (zh)
Inventor
刘波
孔建益
强敏
王黎
邹光明
吴宗武
王兴东
徐福军
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.)
Wuxi City Riel Precision Optical Machinery Co Ltd
Wuhan University of Science and Engineering WUSE
Wuhan University of Science and Technology WHUST
Original Assignee
Wuxi City Riel Precision Optical Machinery Co Ltd
Wuhan University of Science and Engineering WUSE
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 Wuxi City Riel Precision Optical Machinery Co Ltd, Wuhan University of Science and Engineering WUSE filed Critical Wuxi City Riel Precision Optical Machinery Co Ltd
Priority to CN201710080569.7A priority Critical patent/CN106582363A/en
Publication of CN106582363A publication Critical patent/CN106582363A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/11Stirrers characterised by the configuration of the stirrers
    • B01F27/19Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05Stirrers
    • B01F27/11Stirrers characterised by the configuration of the stirrers
    • B01F27/19Stirrers with two or more mixing elements mounted in sequence on the same axis
    • B01F27/192Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
    • B01F27/1921Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements comprising helical elements and paddles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10Maintenance of mixers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50Mixing receptacles
    • B01F35/51Mixing receptacles characterised by their material
    • 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
    • B01J19/18Stationary reactors having moving elements inside
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/07Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of solid raw materials consisting of synthetic polymeric materials, e.g. tyres
    • 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
    • C10G1/00Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C10G1/10Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/141Feedstock
    • Y02P20/143Feedstock the feedstock being recycled material, e.g. plastics

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The invention provides a double-stirring device of a thermal cracking reaction kettle. The double-stirring device comprises a driving motor, a coupling, a stirring shaft, a blade group, and a stirring shaft support device. The double-stirring device is used for performing a material stirring work in the thermal cracking reaction kettle, is simple to operate and easy to use, can effectively improve the material stirring efficiency, enables materials to be mixed uniformly and heated uniformly, greatly reduces the heating time of the materials, and ensures full cracking of the materials, thereby improving the heating efficiency and the product yield of the reaction kettle, and saving energy resources. Moreover, the double-stirring device can discharge solid and liquid materials in the reaction kettle through a discharge port to the maximum extent, and can effectively prevent the problems of blockage, sintering blocks and the like due to accumulation of materials at the bottom of the reaction kettle, thereby greatly improving the discharging efficiency.

Description

A kind of Double stirring device of heat scission reaction kettle
Technical field
The present invention relates to agitating device, it is specifically related to a kind of Double stirring device of heat scission reaction kettle.
Background technology
The large quantity of exhaust gas of junked tire causes environmental pollution, the mode of junked tire is processed at present and mainly has four kinds:Renovation, Ground rubber, burning and thermal cracking.Undoubtedly, thermal cracking has treating capacity big, and high efficiency pollutes little, energy resource journey High advantage is spent, is the optimal path that scrap rubber is recycled, it is considered to be process the most suitable mode of junked tire.
Reactor is one of relatively conventional production equipment of chemical production field, using very in junked tire thermal cracking Generally.Reactor is typically made up of the part such as kettle, kettle cover, transmission device, shaft end moving seal device, support meanss.
At present reactor mixing effect existing on the market is less desirable, mostly all without agitating device, even With agitating device, but due to agitating device unreasonable structure, not enough optimization, cause production cost higher, it is impossible to reach most Mixing effect needed for good production status, is present such as:Can not be sufficiently mixed between each raw material during stirring, cause cracking not filled Point, affect product yield;Exist in reactor bottom during stirring and stir dead angle and produce feed blocking, cannot discharge in time To the greatest extent, cause mixing effect poor, stirring efficiency is not high, the problems such as time-consuming.Based on this, a kind of the dual of heat scission reaction kettle is designed Agitating device still has market application foreground very much.
The content of the invention
It is an object of the invention to solve the problems, such as prior art, there is provided a kind of Double stirring of heat scission reaction kettle Device, including motor, shaft coupling, shaft, blade group, shaft support meanss.Pyrolysis are carried out using the present invention Material stirring work in kettle is answered, it is simple to operate, easy to use, material stirring efficiency can be effectively improved so that material is well mixed, Heating is abundant, greatly reduces the material heat time, it is ensured that material is fully cracked, so as to improve the efficiency of heating surface and product of reactor Income, save energy.Additionally, the device to greatest extent can be discharged the solid-state in reactor, liquid material by discharging opening, The generation of the problems such as can also effectively preventing the blocking because material is caused in reactor bottom accumulation, sinter blocking, greatly improves Discharging efficiency and product yield.
In order to reach above-mentioned technical purpose, the present invention is employed the following technical solutions:
A kind of Double stirring device of heat scission reaction kettle, including motor, shaft coupling, shaft, blade group, stirring Axle support meanss, it is characterised in that the motor is transmitted as power source by belt wheel, then through decelerator and stirring Axle connects, and by regulation motor power mixing speed is controlled;Shaft middle part, bottom are respectively equipped with one group of stirring vane group;Stir Axle middle and upper part is mixed equipped with shaft support meanss. shaft bottommost fixedly mounts one group of stirring vane, by three spherical crown shapes Blade is welded, and middle part fixedly mounts one group of stirring vane, is welded by the square blade of two panels;Top is installed with one Individual support meanss.Support meanss are by sliding bearing, support bar group into support bar is connected by rocker bar bearing with reactor inwall Connect.Manhole is provided with reactor bottom, for the response situation in time observation kettle, and in accidental solid accumulation, stifled When plug discharging opening, manhole can be quickly opened, be aided in dredging feed blocking in time with manual type.
Because with said structure, the present invention has compared to existing technology advantages below:
The agent structure of the present invention is formed using 316L is stainless steel welded, simple structure, and can meet HTHP work Intensity requirement, every three months will once be hung kettle inspection and carrying out flaw detection in real work, be cracked with excluding kettle Deng dangerous;Reactor top is provided with exhaust outlet, and the products such as high-temperature oil gas effectively can be reclaimed after cooling;Side is provided with maintenance Hole, can in time observe the actual conditions in whole course of reaction in cracking still;Agitating device can effectively improve material stirring effect Rate so that material is well mixed, heating is abundant, greatly reduces the material heat time, it is ensured that material is fully cracked, anti-so as to improve Answer the efficiency of heating surface and product income of kettle, save energy.
During present invention work, drawing mechanism, manhole are turned off, and junked tire is cut into the block material of 3CM*3CM by feeding Mouth enters cracking still, when filling volume reaches the 2/3 of reactor volume, charging aperture is closed, in the pneumatic layer positioned at Heat preservation Electric heater unit starts to heat it, and heating technique is carried out according to following curve:First it is heated to according to the speed of 120 DEG C/h 320 DEG C of temperature, are internally incubated 20 minutes;500 DEG C of temperature are heated to according still further to the speed of 180 DEG C/h, 30 points are internally incubated Clock;Stop heating when being heated to 650 DEG C according still further to the speed of 200 DEG C/h;Stirred with 50 revs/min of speed all the time in heating process Mix, make material reaction;The products such as the oil under the gas, the condition of high temperature that generate in course of reaction are all discharged into gas by exhaust outlet Body collection device;After the completion of reaction, opening the pneumatic quickly cooling device of water pipe of reactor outside cloth makes the temperature drop of kettle, then Discharge gate is opened, while keeping motor work to drive bottom screw material is all smoothly arranged from bottom discharge mouth as far as possible Go out.
Therefore, the present invention not only can ensure that material is fully cracked, so as to the efficiency of heating surface and product that improve reactor are received, and And to greatest extent can discharge the solid-state in reactor, liquid material by discharging opening, moreover it is possible to effectively prevention is because material is anti- The blocking answering bottom portion to pile up and cause, generation the problems such as sinter blocking, greatly improve discharging efficiency and product yield.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also To obtain other accompanying drawings according to these accompanying drawings.
A kind of structural representation of the embodiment of the Double stirring device of heat scission reaction kettle that Fig. 1 is provided for the present invention;
Fig. 2 is the partial enlarged drawing in Fig. 1 at 18.
Specific embodiment
Below in conjunction with the accompanying drawing of the present invention, technical scheme is clearly and completely described, it is clear that institute The embodiment of description is only a part of embodiment of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, this The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to the present invention The scope of protection.
As shown in figure 1, a kind of Double stirring device of heat scission reaction kettle, including motor, shaft coupling, shaft, Blade group, shaft support meanss.Reactor main body by shell 1, discharging opening 2, Heat preservation layer 3, agitating device 4, top cover 5, The composition such as 7, charging aperture 11 at catalyst storage;
Heat scission reaction kettle shell 1 is Q235 materials, and thick 10mm, inwall welds 8 identical ear mounts 15, reactor inwall It is heat-insulation layer between 17 and shell 1, arranges resistive heater, Heat preservation layer 3 is ceramic fibre, and top cover 5 passes through spiral shell with shell 1 Tether and connect, 7, charging aperture 11 at catalyst storage is welded with top cover 5;Cracking still center position is equipped with shaft 4, shaft Upper top belt wheel 9 is housed, equipped with lock wind component 6, the lower end of shaft 4 is equipped with screw 18 to the lower end of belt wheel 9, in screw 18 Top is equipped with flat paddle 16;The lower end of screw 18 is 25mm with the distance of the bottom of inner core 11, and screw 12 is with the distance of flat paddle 10 600mm;Cracking still barrel bottom is provided with discharging opening 2, and discharging opening is also made maintenance and used with observation simultaneously.
The material of reactor inwall 1 is 316L materials, and thickness is 10mm;Inner diameter of steel flue is 1000mm, is highly 1170mm;Top Lid 5 and inside drum cover 8 are Q235 materials, and top cover thickness is 10mm, and inside drum cover thickness is 6~8mm;Heat preservation layer 3 is resistance to height Warm ceramic fibre, thickness is 250mm;The length of flat paddle 10 and screw 12 is the 2/3~4/5 of the inwall radius of inner core 11, and The bottom outline of screw 12 is and the inwall bottom profile identical arc of inner core 17.
A kind of operation principle of Double stirring device of heat scission reaction kettle that the present invention is provided is:
Drawing mechanism, manhole are turned off, and junked tire is cut into the block material of 3CM*3CM and enters cracking still by charging aperture, When filling volume reaches the 2/3 of reactor volume, charging aperture is closed, the electric heater unit in the pneumatic layer positioned at Heat preservation starts It is heated, heating technique is carried out according to following curve:First 320 DEG C of temperature are heated to according to the speed of 120 DEG C/h, including Portion is incubated 20 minutes;500 DEG C of temperature are heated to according to the speed of 180 DEG C/h according still further to elder generation, internally 30 minutes is incubated;According still further to The speed of 200 DEG C/h is heated to stop heating when 650 DEG C;All the time material is made with 50 revs/min of speed stirring in heating process Reaction;The products such as the oil under the gas, the condition of high temperature that generate in course of reaction are all discharged into gas collection dress by exhaust outlet Put;After the completion of reaction, opening the pneumatic quickly cooling device of water pipe of reactor outside cloth makes the temperature drop of kettle, then opens discharging Mouthful, while keeping motor work to drive bottom screw material is all smoothly discharged from bottom discharge mouth as far as possible.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be with the scope of the claims.

Claims (4)

1. a kind of Double stirring device of heat scission reaction kettle, including motor, shaft coupling, shaft, blade group, shaft Support meanss, it is characterised in that the reactor uses motor as power source, and power is delivered to stirring by belt Axle, regulation motor power controllable mixing speed;Shaft middle part is equipped with screw equipped with flat slurry, bottom;Shaft middle and upper part It is installed with shaft support meanss;Shaft bottom installs one group of stirring vane additional, by the blade welding of three spherical crown shapes Into;One group of stirring vane of shaft middle part fixed installation, is welded by the square blade of two panels;Shaft top is installed with One support means.
2. a kind of Double stirring device of heat scission reaction kettle according to claim 1, it is characterised in that the support dress Put by sliding bearing, support bar group into.
3. a kind of Double stirring device of heat scission reaction kettle according to claim 1, it is characterised in that the support bar It is connected with reactor inwall by rocker bar bearing.
4. the Double stirring device of a kind of heat scission reaction kettle according to claim 1, it is characterised in that at reactor bottom Portion is provided with manhole, for the response situation in time observation kettle, and accidental solid accumulation, blocking discharging opening when Wait, can quickly open manhole, aided in dredging feed blocking in time with manual type.
CN201710080569.7A 2017-02-10 2017-02-10 Double-stirring device of thermal cracking reaction kettle Pending CN106582363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710080569.7A CN106582363A (en) 2017-02-10 2017-02-10 Double-stirring device of thermal cracking reaction kettle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710080569.7A CN106582363A (en) 2017-02-10 2017-02-10 Double-stirring device of thermal cracking reaction kettle

Publications (1)

Publication Number Publication Date
CN106582363A true CN106582363A (en) 2017-04-26

Family

ID=58587518

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710080569.7A Pending CN106582363A (en) 2017-02-10 2017-02-10 Double-stirring device of thermal cracking reaction kettle

Country Status (1)

Country Link
CN (1) CN106582363A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107286967A (en) * 2017-08-14 2017-10-24 山东艾欧特投资集团有限公司 One kind circulation pyrolysis furnace
CN111451244A (en) * 2020-04-09 2020-07-28 程南南 Plastic bag hot melting recycling method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2070195U (en) * 1990-07-19 1991-01-30 湖南省洪江市三化工厂 Cracking reactor for soap elements
CN201241093Y (en) * 2008-07-02 2009-05-20 欧阳林 Novel environment protection waste old rubber plastic thermal cracking kettle
CN204208570U (en) * 2014-09-26 2015-03-18 中煤科工集团淮北爆破技术研究院有限公司 A kind of mixing of materials reactor device
CN205413027U (en) * 2016-03-23 2016-08-03 四川迈克生物科技股份有限公司 Agitating unit and adopt this agitating unit's reation kettle
CN207119288U (en) * 2017-02-10 2018-03-20 武汉科技大学 The Double stirring mechanism of heat scission reaction kettle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2070195U (en) * 1990-07-19 1991-01-30 湖南省洪江市三化工厂 Cracking reactor for soap elements
CN201241093Y (en) * 2008-07-02 2009-05-20 欧阳林 Novel environment protection waste old rubber plastic thermal cracking kettle
CN204208570U (en) * 2014-09-26 2015-03-18 中煤科工集团淮北爆破技术研究院有限公司 A kind of mixing of materials reactor device
CN205413027U (en) * 2016-03-23 2016-08-03 四川迈克生物科技股份有限公司 Agitating unit and adopt this agitating unit's reation kettle
CN207119288U (en) * 2017-02-10 2018-03-20 武汉科技大学 The Double stirring mechanism of heat scission reaction kettle

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘道诚: "《职业安全与卫生常识》", 30 September 1991, 湖南科学技术出版社 *
唐尔均等: "《化工设备机械基础》", 31 October 1985, 中国广播电视大学出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107286967A (en) * 2017-08-14 2017-10-24 山东艾欧特投资集团有限公司 One kind circulation pyrolysis furnace
CN107286967B (en) * 2017-08-14 2024-01-12 山东锂想新能源科技有限公司 Circulation pyrolysis furnace
CN111451244A (en) * 2020-04-09 2020-07-28 程南南 Plastic bag hot melting recycling method

Similar Documents

Publication Publication Date Title
CN210357403U (en) Stirring type ball mill
CN106582363A (en) Double-stirring device of thermal cracking reaction kettle
CN106635116B (en) A kind of waste tire micelle cracker
CN207128068U (en) A kind of build concrete agitating device
CN207119288U (en) The Double stirring mechanism of heat scission reaction kettle
CN206424961U (en) A kind of graphite intercalation reactor
CN108251159A (en) A kind of refuse pyrolysis gasification process integral box
CN2707686Y (en) Conveying appliance for tar sinter
CN106516604A (en) Heating spiral type material conveying device
CN206143585U (en) Stirring of road maintenance vehicle mixture and waste recycling system
CN206426267U (en) A kind of joint sealing material agitating device
CN211420064U (en) Clay refining plant for petroleum product
CN205933784U (en) Automatic control by temperature change fermentation cylinder of formula of can wasing
CN204491361U (en) A kind of road maintenance asphalt tank
CN212523935U (en) Solid water glass melting device
CN115075089A (en) Regeneration treatment device for asphalt concrete waste
CN212040356U (en) Recycling system of maleic anhydride powder
CN209696892U (en) A kind of Horizontal chemical engineering solid material reaction kettle
CN209772055U (en) Wax melting and stirring combined device for rubber protective wax
CN208213155U (en) A kind of waterborne polyurethane resin highly effective reaction kettle
CN107057743B (en) A kind of waste tire micelle stirs cracking still
CN206218690U (en) A kind of heating coil formula device for transporting objects
CN219559364U (en) Slurry mixing device for preparing melt-process compound fertilizer
CN207130318U (en) Rub grey machine with the hands
CN205556696U (en) Enzyme retort

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
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170426