CN105732434B - The double helix production equipment of urea for vehicle - Google Patents
The double helix production equipment of urea for vehicle Download PDFInfo
- Publication number
- CN105732434B CN105732434B CN201610307291.8A CN201610307291A CN105732434B CN 105732434 B CN105732434 B CN 105732434B CN 201610307291 A CN201610307291 A CN 201610307291A CN 105732434 B CN105732434 B CN 105732434B
- Authority
- CN
- China
- Prior art keywords
- synthesis tank
- tank
- urea
- pump
- crystallization kettle
- 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.)
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000004202 carbamide Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 71
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 71
- 238000002425 crystallisation Methods 0.000 claims abstract description 34
- 230000008025 crystallization Effects 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 230000008676 import Effects 0.000 claims abstract description 5
- 239000004744 fabric Substances 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 26
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 20
- 229910021529 ammonia Inorganic materials 0.000 abstract description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 10
- 239000001569 carbon dioxide Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 16
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000002194 synthesizing effect Effects 0.000 description 4
- 150000003672 ureas Chemical class 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000012295 chemical reaction liquid Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Abstract
The invention discloses a kind of double helix production equipment of urea for vehicle, including synthesis tank, delivery pump, crystallization kettle, vavuum pump, surge tank and circulating pump；Synthesis tank includes inlet, liquid outlet, air inlet and gas outlet；The input port of delivery pump and the liquid outlet of synthesis tank are connected, and the import of the delivery outlet and crystallization kettle of delivery pump is connected；Surge tank, vavuum pump and crystallization kettle are sequentially connected；The input port of circulating pump and the outlet of crystallization kettle are connected, and the delivery outlet of circulating pump is connected with synthesis tank；Two groups of helical baffles and cyclone are additionally provided with synthesis tank；Cyclone is provided with air inlet.The present invention is provided with helical baffle and cyclone in synthesis tank, liquefied ammonia is fully reacted with carbon dioxide, directly use in synthesis tank and react obtained urea synthesis solution, crystallized under vacuum conditions, simplify technological process, production cost is reduced, high-volume, the urea for vehicle of high-purity can be continuously produced.
Description
Technical field
The invention belongs to produce urea for vehicle technical field, it is related to a kind of double helix production equipment of urea for vehicle.
Background technology
According to the regulation of national environmental protection department, the heavy-duty diesel vehicle of sale was intended to reach the row of state IV from 1 day July in 2013
Standard is put, compared with state Ⅲ emission standard, the discharge discharged nitrous oxides of state IV of heavy-duty diesel oil automobile reduce 30% or so,
Grain thing（PM）Discharge reduces more than 80%.In order to reduce nitrogen oxides and particulate matter in exhaust gas from diesel vehicle discharge.At present, Europe
The car manufactures of the country such as U.S. generally use SCR（SCR）Technical finesse exhaust gas from diesel vehicle, makes up to Europe
Vth, the discharge standard of the even more high of Europe VI.
Exhaust gas from diesel vehicle treatment fluid is to coordinate SCR technology, is harmless nitrogen by the conversion of nitrogen oxides in motor exhaust
The reducing agent of gas and water, the primary raw material of exhaust gas from diesel vehicle treatment fluid is urea for vehicle and water, and urea for vehicle is not common agriculture
Industry urea or industrial urea, nor chemical analysis reagent, but it is a kind of there is certain added value, can large-scale industrial production
Specialty chemicals.Urea for vehicle operation principle is that urea for vehicle is added to SCR system, in hot environment（Temperature is higher than 300
℃）, urea resolves into ammonia, along with the effect of catalyst, and the nitrogen oxides in tail gas can generate nitrogen with ammonia reaction rapidly
Gas and water.The delivery temperature of diesel engine is generally 300-500 DEG C, meets the heat required for nitrogen oxides reduction.
At present, to be that ammonia and carbon dioxide react generation urea synthesizing under certain condition anti-for the main flow of urea production
Liquid is answered, urea synthesis reaction liquid obtains solid urea by processes such as flush distillation, double evaporation-cooling, granulations again.However, automobile-used urine
The purity requirement of element is very high, and commercially available industrial or agriculture urea granules are higher due to the magazine content such as biuret, can not be direct
For preparing urea for vehicle solution.
The content of the invention
Simple the invention provides a kind of equipment, floor space is small, and raw material availability is high, the automobile-used urine of good product quality
The double helix production equipment of element.
In order to realize foregoing invention purpose, technical scheme is as follows：
A kind of double helix production equipment of urea for vehicle, including synthesis tank, delivery pump, crystallization kettle, vavuum pump, surge tank and
Circulating pump；Described synthesis tank includes inlet, liquid outlet, air inlet and gas outlet；The top of described synthesis tank be provided with into
Liquid mouthful and gas outlet, the lower section of synthesis tank are provided with liquid outlet and air inlet；The input port of described delivery pump and going out for synthesis tank
Liquid mouthful connection, the import of the delivery outlet and crystallization kettle of delivery pump is connected；Described surge tank, vavuum pump and crystallization kettle connects successively
Connect, make to form vacuum in crystallization kettle；The outlet of the input port of described circulating pump and crystallization kettle is connected, the delivery outlet of circulating pump with
Synthesis tank is connected；Two groups of helical baffles and cyclone are additionally provided with described synthesis tank；Described helical baffle is fixed and is located at conjunction
Into on the inwall of tank；Cyclone is provided with described air inlet.
As a further improvement, above-described cyclone includes cylinder and polylith fin；Described fin is with spiral rank
Terraced mode is arranged in cylinder, and gap is left between adjacent fins.
As a further improvement, the outer end of above-described fin is connected with cylinder, it is inner hanging.
As a further improvement, above-described two groups of helical baffles are set in opposite direction vertically.
During work, raw materials ammonia reacts with carbon dioxide in synthesis tank, and obtained urea synthesis solution passes through conveying
Pump is entered in the crystallization kettle in vacuum state, is crystallized in crystallization kettle；Circulating pump and the valve of synthesis tank UNICOM are opened, will
Unsaturated urea synthesis solution is delivered in synthesis tank to be reacted again；So it is recycled to the urea that fully reaction obtains saturation
After reaction solution, circulating pump and the valve of synthesis tank UNICOM are closed, the outlet of crystallization kettle is opened, obtains the urea product of high-purity.
Compared to prior art, the present invention has the advantage that and had the beneficial effect that：
1st, provided with fixed helical baffle in synthesis tank of the invention, helical baffle has to the gas-liquid reaction of reaction system
The effect for having directed flow and repeatedly mixing, improves the utilization rate of carbon dioxide.
2nd, provided with two groups of helical baffles in synthesis tank of the invention, and set vertically in opposite direction, increase liquefied ammonia exists
Response area in reaction system, and extend the residence time, reaction is abundant, improves production efficiency.
3rd, the cyclone that the present invention is provided with is that the cyclone can in the air inlet of synthesis tank by one group of fin screw arrangement
To be effectively increased the disturbance of gas, play the role of to reacting gas broken and disperse, carbon dioxide is reacted abundant with liquefied ammonia, carry
The utilization rate of high carbon dioxide.
4th, react obtained urea synthesis solution in the present invention directly use synthesis tank to be crystallized, make use of urea synthesis solution
Temperature it is high the characteristics of, without additional heat, reduce the generation of biuret；And in vacuum environment, in urea synthesis solution
High-temperature water can rapid vaporization, therefore have part water and be evaporated from urea synthesis solution, improve the concentration of urea synthesis solution,
Improve the productivity ratio of product, it is ensured that the quality of product.
5th, the present invention is provided with circulating pump, unsaturated urea synthesis solution can be again delivered in urea synthesizing tank and carried out again
Secondary response, saves raw material, reduces production cost.
6th, the present invention it is simple and reasonable, simplify technological process, reduce production cost, can continuously produce high-volume,
The urea for vehicle of high-purity, energy-conserving and environment-protective, with preferable economic benefit and social benefit.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 for the present invention in cyclone structural representation.
Accompanying drawing is identified：
1- synthesis tanks, 2- delivery pumps, 3- crystallization kettles, 4- surge tanks, 5- vavuum pumps, 6- circulating pumps, 11- inlets, 12- goes out
Gas port, 13- helical baffles, 14- air inlets, 15- cyclones, 16- fins, 17- cylinders.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1：
A kind of double helix production equipment of urea for vehicle, including synthesis tank 1, delivery pump 2, crystallization kettle 3, vavuum pump 5, buffering
Tank 4 and circulating pump 6.Described synthesis tank 1 includes inlet 11, liquid outlet, air inlet 16 and gas outlet 12；Described synthesis tank
1 top is provided with inlet 11 and gas outlet 12, and the lower section of synthesis tank 1 is provided with liquid outlet and air inlet 14.Described delivery pump 2
Input port be connected with the liquid outlet of synthesis tank 1, the delivery outlet of delivery pump 2 is connected with the import of crystallization kettle 3.Described surge tank
4th, vavuum pump 5 is sequentially connected with crystallization kettle 3, makes to form vacuum in crystallization kettle 3.The input port of described circulating pump 6 and crystallization kettle 3
Outlet connection, the delivery outlet of circulating pump 6 is connected with synthesis tank 1.
Two groups of helical baffles 13 and cyclone 15 are additionally provided with described synthesis tank 1；Described helical baffle 13 is fixed and set
On the inwall of synthesis tank 1；Cyclone 15 is provided with described air inlet 14.
Described cyclone 15 includes cylinder 17 and polylith fin 16；Described fin 16 is arranged in spiral step mode
In cylinder 17, gap is left between adjacent fins.The outer end of described fin 16 is connected with cylinder 17, inner hanging.
During work, raw materials ammonia is entered in synthesis tank 1 by inlet 11, and liquefied ammonia increases by fixed helical baffle 13
Add response area, and extend the residence time；Carbon dioxide is entered in synthesis tank 1 by air inlet 14, by eddy flow
The processing of device 15, the perturbation of carbon dioxide is strong, is fully reacted with liquefied ammonia, the high urea synthesizing of obtained quality
Liquid；Urea synthesis solution is entered in the crystallization kettle 3 in vacuum state by delivery pump 2, is crystallized in crystallization kettle 3；Opening is followed
Ring pump 6 and the valve of the UNICOM of synthesis tank 1, unsaturated urea synthesis solution is delivered in synthesis tank 1 and reacted again；So
It is recycled to fully reaction to obtain after the urea reaction liquid of saturation, closes circulating pump 6 and the valve of the UNICOM of synthesis tank 1, open crystallization
The outlet of kettle 3, obtains the urea product of high-purity.
Embodiment 2：
A kind of double helix production equipment of urea for vehicle, including synthesis tank 1, delivery pump 2, crystallization kettle 3, vavuum pump 5, buffering
Tank 4 and circulating pump 6.Described synthesis tank 1 includes inlet 11, liquid outlet, air inlet 16 and gas outlet 12；Described synthesis tank
1 top is provided with inlet 11 and gas outlet 12, and the lower section of synthesis tank 1 is provided with liquid outlet and air inlet 14.Described delivery pump 2
Input port be connected with the liquid outlet of synthesis tank 1, the delivery outlet of delivery pump 2 is connected with the import of crystallization kettle 3.Described surge tank
4th, vavuum pump 5 is sequentially connected with crystallization kettle 3, makes to form vacuum in crystallization kettle 3.The input port of described circulating pump 6 and crystallization kettle 3
Outlet connection, the delivery outlet of circulating pump 6 is connected with synthesis tank 1.
Two groups of helical baffles 13 and cyclone 15 are additionally provided with described synthesis tank 1；Described helical baffle 13 is fixed and set
On the inwall of synthesis tank 1, two groups of helical baffles 13 are set in opposite direction vertically.
Cyclone 15 is provided with described air inlet 14.Cyclone 15 includes cylinder 17 and polylith fin 16；The described wing
Piece 16 is arranged in cylinder 17 in spiral step mode, and gap is left between adjacent fins.The outer end of described fin 16 and post
Body 17 is connected, inner hanging.
During work, raw materials ammonia is entered in synthesis tank 1 by inlet 11, and liquefied ammonia increases by fixed helical baffle 13
Add response area, and extend the residence time；Carbon dioxide is entered in synthesis tank 1 by air inlet 14, by eddy flow
The processing of device 15, the perturbation of carbon dioxide is strong, is fully reacted with liquefied ammonia, the high urea synthesizing of obtained quality
Liquid；Urea synthesis solution is entered in the crystallization kettle 3 in vacuum state by delivery pump 2, is crystallized in crystallization kettle 3；Opening is followed
Ring pump 6 and the valve of the UNICOM of synthesis tank 1, unsaturated urea synthesis solution is delivered in synthesis tank 1 and reacted again；So
It is recycled to fully reaction to obtain after the urea reaction liquid of saturation, closes circulating pump 6 and the valve of the UNICOM of synthesis tank 1, open crystallization
The outlet of kettle 3, obtains the urea product of high-purity.
Claims (2)
1. a kind of double helix production equipment of urea for vehicle, it is characterised in that：Including synthesis tank（1）, delivery pump（2）, crystallization kettle
（3）, vavuum pump（5）, surge tank（4）And circulating pump（6）；Described synthesis tank（1）Including inlet（11）, liquid outlet, air inlet
Mouthful（16）And gas outlet（12）；Described synthesis tank（1）Top be provided with inlet（11）And gas outlet（12）, synthesis tank（1）
Lower section be provided with liquid outlet and air inlet（14）；Described delivery pump（2）Input port and synthesis tank（1）Liquid outlet connection,
Delivery pump（2）Delivery outlet and crystallization kettle（3）Import connection；Described surge tank（4）, vavuum pump（5）With crystallization kettle（3）According to
Secondary connection, makes crystallization kettle（3）Interior formation vacuum；Described circulating pump（6）Input port and crystallization kettle（3）Outlet connection, follow
Ring pump（6）Delivery outlet and synthesis tank（1）Connection；Described synthesis tank（1）Inside it is additionally provided with two groups of helical baffles（13）And eddy flow
Device（15）；Described helical baffle（13）Fixation is located at synthesis tank（1）Inwall on；Described air inlet（14）Place is provided with eddy flow
Device（15）；
Described cyclone（15）Including cylinder（17）With polylith fin（16）；Described fin（16）Arranged in spiral step mode
Cloth is in cylinder（17）It is interior, gap is left between adjacent fins；
Two groups of described helical baffles（13）Set vertically in opposite direction.
2. the production consersion unit of urea for vehicle according to claim 1, it is characterised in that：Described fin（16）It is outer
End and cylinder（17）It is connected, it is inner hanging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307291.8A CN105732434B (en) | 2016-05-11 | 2016-05-11 | The double helix production equipment of urea for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610307291.8A CN105732434B (en) | 2016-05-11 | 2016-05-11 | The double helix production equipment of urea for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105732434A CN105732434A (en) | 2016-07-06 |
| CN105732434B true CN105732434B (en) | 2017-09-29 |
Family
ID=56288951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610307291.8A Active CN105732434B (en) | 2016-05-11 | 2016-05-11 | The double helix production equipment of urea for vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN105732434B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231657A (en) * | 1996-07-23 | 1999-10-13 | 西尔特克-尼吉有限公司 | Process for the urea synthesis from ammonia and carbon dioxide and apparatus thereof |
| CN1895744A (en) * | 2006-06-26 | 2007-01-17 | 马春强 | Dusted composite SCR smoke denitration and its denitrating catalytic reactor |
| CN101717652A (en) * | 2009-11-24 | 2010-06-02 | 山东理工大学 | Spiral pyrolysis reactor |
| CN202078887U (en) * | 2011-04-26 | 2011-12-21 | 大连松海石化检修工程有限公司 | Combined type urea synthesizing tower |
| CN204134541U (en) * | 2014-10-11 | 2015-02-04 | 诸城兴贸玉米开发有限公司 | Double helix paddle stirring element |
| CN204566393U (en) * | 2015-04-23 | 2015-08-19 | 汤渭海 | The double-screw type agitator of foaming doors central layer raw materials for production |
| CN105289446A (en) * | 2015-11-11 | 2016-02-03 | 无锡清杨机械制造有限公司 | Chemical reaction vessel apparatus |
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| CN2463044Y (en) * | 2001-02-14 | 2001-12-05 | 宁波市远东塔器工程有限公司 | Parts for use in urea synthetic tower |
| NZ597135A (en) * | 2009-06-05 | 2013-10-25 | Ind Ecosystems Pty Ltd | Method and integrated system for producing electric power and fertiliser |
| CN202063848U (en) * | 2011-05-06 | 2011-12-07 | 安徽帝元生物科技有限公司 | Production device for urea controlled release fertilizer |
| AU2013213700B2 (en) * | 2012-08-31 | 2017-08-17 | China Petroleum & Chemical Corporation | Apparatus for producing aqueous urea solution used in vehicles and method of using the same |
| CN104557617B (en) * | 2013-10-10 | 2017-01-25 | 中国石油化工股份有限公司 | Diesel exhaust fluid production method |
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- 2016-05-11 CN CN201610307291.8A patent/CN105732434B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1231657A (en) * | 1996-07-23 | 1999-10-13 | 西尔特克-尼吉有限公司 | Process for the urea synthesis from ammonia and carbon dioxide and apparatus thereof |
| CN1895744A (en) * | 2006-06-26 | 2007-01-17 | 马春强 | Dusted composite SCR smoke denitration and its denitrating catalytic reactor |
| CN101717652A (en) * | 2009-11-24 | 2010-06-02 | 山东理工大学 | Spiral pyrolysis reactor |
| CN202078887U (en) * | 2011-04-26 | 2011-12-21 | 大连松海石化检修工程有限公司 | Combined type urea synthesizing tower |
| CN204134541U (en) * | 2014-10-11 | 2015-02-04 | 诸城兴贸玉米开发有限公司 | Double helix paddle stirring element |
| CN204566393U (en) * | 2015-04-23 | 2015-08-19 | 汤渭海 | The double-screw type agitator of foaming doors central layer raw materials for production |
| CN105289446A (en) * | 2015-11-11 | 2016-02-03 | 无锡清杨机械制造有限公司 | Chemical reaction vessel apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105732434A (en) | 2016-07-06 |
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Address after: 530000 15th floor, block B, No. 88, Daxue West Road, XiXiangTang District, Nanning City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Xiayang Environmental Protection Technology Co.,Ltd. Address before: 530023 Nanning Road, the Guangxi Zhuang Autonomous Region Qingxiu District building 49-23 No. fifteen north latitude and 28 layer 1521. Patentee before: NANNING XIAYANG CHEMICAL TECHNOLOGY Co.,Ltd. |
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Denomination of invention: Double-helix production equipment of urea for vehicle Effective date of registration: 20200327 Granted publication date: 20170929 Pledgee: Nanning United Innovation Financing Guarantee Co.,Ltd. Pledgor: Guangxi Xiayang Environmental Protection Technology Co.,Ltd. Registration number: Y2020450000012 |
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Date of cancellation: 20210324 Granted publication date: 20170929 Pledgee: Nanning United Innovation Financing Guarantee Co.,Ltd. Pledgor: Guangxi Xiayang Environmental Protection Technology Co.,Ltd. Registration number: Y2020450000012 |
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Denomination of invention: Double screw production equipment for vehicle urea Effective date of registration: 20210330 Granted publication date: 20170929 Pledgee: Nanning United Innovation Financing Guarantee Co.,Ltd. Pledgor: Guangxi Xiayang Environmental Protection Technology Co.,Ltd. Registration number: Y2021450000009 |
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Denomination of invention: Double screw production equipment for vehicle urea Effective date of registration: 20220609 Granted publication date: 20170929 Pledgee: Guangxi Guihui Financing Guarantee Co.,Ltd. Pledgor: Guangxi Xiayang Environmental Protection Technology Co.,Ltd. Registration number: Y2022450000082 |
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