CN105461361B - Multichannel evaporates urea prilling system - Google Patents
Multichannel evaporates urea prilling system Download PDFInfo
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- CN105461361B CN105461361B CN201510992074.2A CN201510992074A CN105461361B CN 105461361 B CN105461361 B CN 105461361B CN 201510992074 A CN201510992074 A CN 201510992074A CN 105461361 B CN105461361 B CN 105461361B
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/005—Post-treatment
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Abstract
The present invention provides a kind of multichannels to evaporate urea prilling system, belong to urea granulation plant field, solving urea granulator in the prior art needs frequent shutdown to overhaul, it can not adapt to the demand of mass production product in a short time, the problems such as can not being produced using existing equipment, it provides one kind and can not stop production and carry out repair and maintenance, it being capable of mass production product in a short time, and the multichannel evaporation urea prilling system of original production equipment can be efficiently used, the system includes multiple vapo(u)rization systems and multiple pelletizers, it further include transferring pipeline, two-way pump, valve, the pipeline that transfers is between two molten urea solution pipes, the two-way pump, which is located at, to be transferred on pipeline, the valve, which is located at, to be transferred on pipeline.Vapo(u)rization system of the present invention and granulating system can realize by transferring pipeline with the switching closed, reach do not stop production can repair apparatus, existing equipment can be efficiently used and the purpose of mass production product in a short time may be implemented, be suitable for promoting and applying.
Description
Technical field
Urea granulation plant field of the present invention is more particularly to a kind of multichannel evaporation urea prilling system.
Background technique
Urea granulator mainly uses the product structure of following several companies in the prior art:
1. the bed granulator of Norsk Hydro A.S (Norsk Hydro) is rectangular apparatus, as shown in Figure 1, by upper
Room, lower room, multihole distributor and wash nozzle composition, if upper chamber is divided into stem portion with plate washer, the effect of plate washer is to prevent urea
Particle back-mixing；Multihole distributor plays the role of evenly distributing fluidization air；Wash nozzle is located above multihole distributor, has
Certain altitude, and certain distance is kept with wall, prevent urine deposition of droplets on wall.95%~96% be added with formaldehyde
Urine the mist area that a back taper is formed in fluidized bed is sprayed onto after nozzle is by low-pressure air atomizing, to avoid nozzle stifled
Plug, atomization low-pressure air need to be first to heat to the crystallization temperature of slightly above urine；The particulate urea of returning charge is fluidized air and blows afloat
Vigorous agitation forms a boiling section in fluidized bed；2 regions intermesh, and urine mist is sprayed on urea particle,
Through cooling and desiccation, become a biggish particle.During fluidized bed agitation, and it is spray coated to generate another
Journey, increasing biggish particle constantly becomes granular urea, and granular urea is deposited to bottom porous point due to gravity
On fabric swatch, next room is entered in the horizontal thrust that porous plate bellmouth generates by means of fluidization air.It is wanted according to required partial size
Ask, can in several indoor successively sprayings, successively sedimentation pusher is to next room, the partial size until reaching requirement, then from nodulizer
Interior discharge.The advantages of Norway's Hydro technology is that the history of release is permanent, and construction device achievement is more, technology maturation, the disadvantage is that throwing
Money is high, and energy consumption is high.Suitable for creating large-scale plant.
2. the injection bed granulator that Japanese Toyo Engineering Corporation (TEC) is developed by spouted bed, porous plate, fluidized bed,
Nozzle, air distribution and gas chamber composition.Spouted bed is surround by the fluidized bed on porous plate, and a spouted bed has a spray
Mouth can arrange that multiple spouted beds, spouted bed are formed by injection air according to each device production scale in nodulizer, can make to urinate
Plain particle is sufficiently mixed with urine, makes shape of product more rounding, uniform in size, and the suitable space of spouted bed will not make
Burl block；Fluidized bed is formed by fluidization air, and the optimum organization of spouted bed and fluidized bed can not only generate particle effective cold
But it acts on, and since urine with pressure is directly through nozzle spray on spouted bed, the energy that atomizing air heating needs can be reduced.
The energy consumption of TEC technology is slightly below Hydro technology, but industrial achievement is few, and investment is high, and input-output ratio is not reasonable.
3. Beijingn Dalike Science And Technology Co., Ltd and Qingdao Yongzheng Chemical Mechine Co., Ltd. began from 1998, joint Tsing-Hua University
Domestic famous university, university develops double rotary drum fluidization bed granular urea prilling with independent intellectual property rights, and has obtained
Chinese invention patent (ZL99122286.5, ZL98250394.6, ZL99121906.6), the patent are made in Tsinghua University
The proving test of grain rotary drum.2001, in Dongting Lake, nitrogen fertilizer plant built up 1.2 ten thousand tons/year of experimental rigs of nominal, reached substantially after driving
To expected design purpose, the comprehensive verification science of the reasonability of patent process and two patent equipments.What the technology had
Outstanding feature is: fluidized bed in conjunction with rotary drum, it is air-cooled in conjunction with water cooling, process is simple, device efficiency is high, low energy consumption, small investment.
Double rotating drum fluid technology is applied in modernizing and expanding the existing factory, and has unrivaled superiority compared with other production methods；In the construction of new factory,
Also there is very strong competitiveness in terms of investment, energy consumption.
Urea is as a kind of chemical fertilizer, and production is that have periodically, and there are dull seasons and busy season for sale, carry out in the dull season
It is a large amount of in actual production operation although producing in enormous quantities so that the busy season sells and use is theoretically feasible method
The accumulation of urea fertilizer stores, avoids agglomeration etc. of volatilizing, keep away from moisture, and is all to be difficult to solve the problems, such as, moreover, mass production
Chemical fertilizer storage, will also result in fund deposits stagnant waste, thus how the busy season high-volume quickly produced, be the prior art urgently
Technical problem to be solved, with the development of agricultural, because needing to plant fertilising, demand of the urea product in the busy season in quickly within ploughing season
Have the characteristics that short-term requirments are big, in order to solve this problem only by increasing equipment amount, more new equipment is inadequate.It is granulated
Machine is in the production process of urea, inevitably because the reasons such as agglomeration cause equipment to need inside pelletizer in granulation process
Frequently maintenance, moreover, equipment stop transport, heat dissipation, opened after maintenance, preheat, be granulated, etc. process, need the time long, cause
The delay of production.In addition, if carrying out equipment update, existing urea production equipment is scrapped or given up, and to money
It causes greatly to waste in source.
Summary of the invention
Frequently maintenance is needed in order to solve urea granulator in the prior art, mass production product in a short time can not be adapted to
Demand can not stop production the present invention provides one kind the problems such as can not be produced using existing equipment and carry out repair and maintenance, energy
Enough mass production products in a short time, and the multichannel evaporation urea prilling system of original production equipment can be efficiently used.
The technical solution adopted in the present invention is as follows: multichannel evaporate urea prilling system, including urine slot, vapo(u)rization system,
Pipeline, pelletizer, fluid pump；The pipeline is divided into perfusion tube, molten urea solution pipe；The vapo(u)rization system is located at urine slot and granulation
It between machine, is connected respectively at urine slot with pelletizer by pipeline, fluid pump is located on pipeline, is located at urine slot and vapo(u)rization system
Between pipeline be perfusion tube, pipeline between vapo(u)rization system and pelletizer is molten urea solution pipe；The vapo(u)rization system is N
A, the pelletizer is X, and the N is more than or equal to 2, and it further includes transferring pipeline, two-way pump, valve that the X, which is more than or equal to 2,
Between two molten urea solution pipes, the two-way pump is located to be transferred on pipeline the pipeline that transfers, and the valve, which is located at, to be transferred
On pipeline.
The vapo(u)rization system be it is N number of, the pelletizer is X, and preferably N is identical as X quantity.
An optimal technical scheme of the invention is that the vapo(u)rization system is two, is divided into the first vapo(u)rization system and second and steams
Hair system, the pelletizer are two, are divided into the first pelletizer and the second pelletizer；First vapo(u)rization system and the first pelletizer it
Between by the first molten urea solution pipe connect, between the second vapo(u)rization system and the second pelletizer by the second molten urea solution pipe connect,
Pipeline is transferred between the first molten urea solution pipe and the second molten urea solution pipe.
It include granulation chamber, nozzle in the pelletizer, the nozzle is located in granulation chamber；The nozzle includes nozzle master
Body, nozzle head, blast tube, jet hole, gasket seal, urine passageway, emulsification air duct, mixing chamber；The nozzle body with
Nozzle head is fixedly connected, and blast tube is located on nozzle head, is hollow tubular, and internal void is divided into taper type, close to nozzle master
Body one end diameter is big, small far from nozzle body one end diameter；Jet hole is located at nozzle head outlet end, and gasket seal is located at nozzle head
Between nozzle body；It emulsifies air duct and runs through nozzle body, be connected with the mixing chamber being located in nozzle head, and face is sprayed
Mouth tube hub line；The urine passageway runs through nozzle body, is connected with the mixing chamber both ends being located in nozzle head.
The shape of the gasket seal is ring-type.
The jet hole is located at nozzle head outlet end, is hollow tubular, and internal void is divided into taper type, close to nozzle head
One end diameter is small, big far from nozzle head one end diameter.
The vapo(u)rization system includes 1 or more evaporation unit and control valve, and evaporation unit is connect with control valve；Institute
State the heating tube that evaporation unit includes multiple parallel arrangeds.
The beneficial effects of the present invention are: the present invention is equipped with multiple vapo(u)rization systems and pelletizer, and by transferring pipeline phase
Connection can use original Granulation Equipments as a part in new equipment, avoid the waste of resource and leaving unused for equipment,
The connection of vapo(u)rization system and pelletizer can be changed in operational process by transferring pipeline, such as by transferring the evaporation of pipeline first system
System or can be connected simultaneously with the one the second pelletizers with the second pelletizer, be easier the vapo(u)rization system of blocking in this way
A progress Maintenance and Repair can be shut down at any time, without cutting off whole equipment, avoided because when shutting down and restarting bring
Between and the energy on huge waste, can be with continuous production when the busy season, yield was big.
Unlike the prior art, vapo(u)rization system includes 1 or more evaporation unit and control to vaporization chamber of the invention
Valve, evaporation unit are connect with control valve, and certain control valve can connect the list for realizing each evaporation unit with single evaporation unit
Solely control, can also be connect with all evapn unit with a master control valve, be respectively controlled evaporation unit by control valve
Working condition, by adjusting control valve realize vapo(u)rization system it is synchronous with the efficiency of pelletizer, avoid liquid in vaporization chamber because
Evaporation excessively causes the Biuret Content of molten urea solution excessively high, is reached by control valve and is precisely controlled to vaporization chamber, to reach
To the control to product quality.
Nozzle is transformed in pelletizer of the present invention, increases gasket, so that nozzle body connects more with nozzle head
Add tight seal, avoid leakage, avoid leak liquid from being blown to inside pelletizer by back-blowing causes agglomeration to be made without atomization
Forming apparatus can not work normally.It is simultaneously that diameter gradually contracts in blast tube by using the through-hole of two opposite taper types
Small shape is that diameter gradually amplifies in jet hole, is to reach pressurization in blast tube, liquid is forced quick and precisely to spray
Purpose, reach the taper type that diameter after jet hole is gradually increased and be granulated convenient for gas-liquid mixture discharge, through the invention nozzle
The change of mouth structure, jet hole caking phenomenon reduce obviously, and working time ratio original structure at least extends one times.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is existing urea granulator structure schematic diagram in background technique；
Fig. 2 is that 1 multichannel of the embodiment of the present invention evaporates urea prilling system structural schematic diagram；
2 nozzle arrangements schematic diagram of Fig. 3 embodiment of the present invention；
Fig. 4 is 3 nozzle arrangements schematic diagram of embodiment；
Fig. 5 is to be granulated workflow schematic diagram；
Fig. 6 is 4 structural schematic diagram of embodiment.
Specific embodiment
Detailed description of the present invention embodiment with reference to the accompanying drawings.
Embodiment 1
As shown in Fig. 2, the embodiment of the present invention multichannel evaporate urea prilling system, including urine slot 1, vapo(u)rization system 2,
Pipeline 4, pelletizer 3, fluid pump 5；The pipeline 4 divides for perfusion tube 6, molten urea solution pipe 7；The vapo(u)rization system 2 is located at urine
Between slot 1 and pelletizer 3, connected by pipeline 4 respectively at urine slot 1 and pelletizer 3, fluid pump 5 is located on pipeline 4, is located at
Pipeline 4 between urine slot 1 and vapo(u)rization system 2 is perfusion tube 6, and the pipeline 4 between vapo(u)rization system 2 and pelletizer 3 is molten
Melt catheter 7；The vapo(u)rization system 2 is two, is divided into the first vapo(u)rization system 21 and the second vapo(u)rization system 22, the pelletizer 3
It is two, is divided into the first pelletizer 31 and the second pelletizer 32；By the between first vapo(u)rization system 21 and the first pelletizer 31
The connection of one molten urea solution pipe 71, is connected between the second vapo(u)rization system 22 and the second pelletizer 32 by the second molten urea solution pipe 72,
Pipeline 8 is transferred between the first molten urea solution pipe 71 and the second molten urea solution pipe 72.The two-way pump 9, which is located at, transfers pipeline 8
On, the valve 10, which is located at, to be transferred on pipeline 8.
The production capacity of former chemical fertilizer plant is to produce 520000 tons per year, and urea production capacity reaches 780,000 tons of annual output after volume increase 50%；And
The vapo(u)rization system of original device, granulating system are not transformed, according to structure of the invention, increase a set of vapo(u)rization system and
Eddy flow granulating system is as the second vapo(u)rization system 22 and the second pelletizer 32；Original vapo(u)rization system and granulating system are steamed as first
Hair system 21 and the first pelletizer 31；Second vapo(u)rization system 22 can provide molten urea solution, daily output for the first pelletizer 31
1800 tons of urea；Molten urea solution can also be supplied to the second pelletizer 32 by the first vapo(u)rization system 21；Pass through the first vapo(u)rization system 21
Pipeline 8 is transferred between the second vapo(u)rization system 22, is provided by the first vapo(u)rization system 21 and the second vapo(u)rization system 22 for pelletizer
Melting spraying urine, can by the switch of pipeline, realize each vapo(u)rization system and pelletizer can independent stop production to overhaul, and
It is worked by other equipment, do not stopped work production and maintenance.By commissioning test, acquisition the result is that the urea product of output contracts
Two ureas are qualified, and reduce energy consumption, and biuret is minimum, and up to 0.7% or so, mean values are lower than 0.85%, comply fully with top grade
Product requirement.Yield is significantly increased, and production efficiency greatly improves.
Embodiment 2
As shown in figure 3, including granulation chamber 11, nozzle 12 in the pelletizer 3, the nozzle is located in granulation chamber；It is described
Nozzle includes nozzle body 121, nozzle head 122, blast tube 123, jet hole 124, gasket seal 125, urine passageway 126, cream
Change air duct 127, mixing chamber 128；The nozzle body 121 is fixedly connected with nozzle head 122, and blast tube 123 is located at nozzle
It is hollow tubular on first 122, internal void is divided into taper type, and it is big close to 121 one end diameter of nozzle body, far from nozzle master
121 one end diameter of body is small；Jet hole 124 is located at 122 outlet end of nozzle head, and gasket seal 125 is located at nozzle head 122 and nozzle master
Between body 121；It emulsifies air duct 127 and runs through nozzle body 121, be connected with the mixing chamber 128 being located in nozzle head 122,
And 123 center line of face blast tube；The urine passageway 126 runs through nozzle body 121, with the mixing being located in nozzle head 122
128 both ends of chamber are connected.
The shape of the gasket seal 125 is ring-type.
Nozzle body 121, nozzle head 122 are separate structure, are fixedly connected using engagement thread, are conducive to nozzle head 122
Maintenance and cleaning and replacement nozzle body 121 and nozzle head further strengthened by the increase of gasket seal 125
Sealing between 122 avoids leakage, and avoid leak liquid from being blown to inside pelletizer by back-blowing causes to agglomerate without atomization
Equipment is caused to can not work normally.
Embodiment 3
As shown in figure 4, the jet hole 124 is located at 122 outlet end of nozzle head, it is hollow tubular, internal void is divided into
Taper type, it is small close to 122 one end diameter of nozzle head, it is big far from 122 one end diameter of nozzle head.Remaining is the same as embodiment 2.Using this reality
Apply the structure of example, injection is stronger when granulation, sprays more smooth, avoids crystallizing viscous glutinous plug nozzle in 122 outlet portion of nozzle head
Mouth 124.
Embodiment 4
As shown in 2 and Fig. 5, first vapo(u)rization system includes 3 evaporation units 2.11 and control valve 2.12, rapid steamer
Group 2.11 is connect with control valve 2.12；The evaporation unit includes the heating tube of multiple parallel arrangeds, also includes existing skill certainly
The designing points of the components such as the blower in art, these components and non-present invention, therefore, not repeat them here.First vapo(u)rization system is by turning
Defeated pipeline 8 connect and works with the second pelletizer 3.2；Remaining is the same as embodiment 1.
Crystal seed moves forward under the action of fluidized wind in pelletizer internal rotating, and fusing urea passes through spray head and atomization
Air is strengthened in the urea seed particles that the spray of pelletizer side is rolled in suspension after mixing in nozzle with droplet, forward with crystal seed
Movement, the partial size of crystal seed are gradually grown up, and bulky grain product is formed.
The urea granules of granulation tower output are sent to feed bin by conveyer belt and are collected as crystal seed.Two parallel connections are given by feed bin
The pelletizer feeding of operation.Two pelletizers are essentially identical, work independently mutually.
The fusing urea sent by the second vapo(u)rization system 2.2, send through regulating valve to the general pipeline of fusing urea nozzle, by total
Pipe is distributed to every stage nozzle, is sprayed in pelletizer after mixing with emulsification air.To guarantee that molten urea solution is not sent out at nozzle position
Raw crystallization is provided chamber where 140 DEG C of air heated nozzle by back blowing machine.
To ensure the spraying of the urea granules in pelletizer uniformly, urea granules need to be allowed to keep fluidized state.Product pellet by
It takes out glassware and send into fluidized bed cooler cooling.
It is exceeded often to will appear biuret for urea production equipment in the prior art, is all larger than 1.0%, highest is more than 2.0%.
For biuret excessive problem, the relationship that the present invention analyzes the heat exchange area of heater and is granulated between speed,
And tested by many experiments, it finds residence time of the thin urine in vapo(u)rization system, the content of biuret can be caused
It influences, to design the heating element with adjustability, heat exchange area can be adjusted according to granulation efficiency, adjust thin urine
Heat exchange area and residence time in evaporation heater, avoid excessive evaporation, reduce the generation of biuret.Present device examination
Production, product biuret value see the table below:
Linkage trial run finished product biuret situation table
As seen from the above table, the biuret excessive problem as caused by Equipment is addressed, it is sufficient to meet storey increase design
It is required that and good finished product can be obtained.
Certainly, the above is a preferred embodiment of the present invention, it is noted that for the ordinary skill of the art
For personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of multichannel evaporates urea prilling system, including urine slot, vapo(u)rization system, pipeline, pelletizer, fluid pump；The pipe
Road is divided into perfusion tube, molten urea solution pipe；The vapo(u)rization system between urine slot and pelletizer, by pipeline respectively with urine
Slot is connected with pelletizer, and fluid pump is located on pipeline, and the pipeline between urine slot and vapo(u)rization system is perfusion tube, is located at and is steamed
Pipeline between hair system and pelletizer is molten urea solution pipe；It is characterized by: the vapo(u)rization system is N number of, the pelletizer
It is X, the N is more than or equal to 2, and the X is more than or equal to 2；It further include transferring pipeline, two-way pump, valve, it is described to transfer pipeline position
Between two molten urea solution pipes, the two-way pump, which is located at, to be transferred on pipeline, and the valve, which is located at, to be transferred on pipeline.
2. multichannel as described in claim 1 evaporates urea prilling system, it is characterised in that: N is identical as X quantity.
3. multichannel as claimed in claim 2 evaporates urea prilling system, it is characterised in that: the vapo(u)rization system is two, point
For the first vapo(u)rization system and the second vapo(u)rization system, the pelletizer is two, is divided into the first pelletizer and the second pelletizer；First
It is connected between vapo(u)rization system and the first pelletizer by the first molten urea solution pipe, is led between the second vapo(u)rization system and the second pelletizer
The connection of the second molten urea solution pipe is crossed, transfers pipeline between the first molten urea solution pipe and the second molten urea solution pipe.
4. multichannel as described in claim 1 evaporates urea prilling system, it is characterised in that: include being granulated in the pelletizer
Room, nozzle, the nozzle are located in granulation chamber；The nozzle includes nozzle body, nozzle head, blast tube, jet hole, gasket
Piece, urine passageway, emulsification air duct, mixing chamber；The nozzle body is fixedly connected with nozzle head, and blast tube is located at nozzle head
On, it is hollow tubular, internal void is divided into taper type, and it is big close to nozzle body one end diameter, it is straight far from nozzle body one end
Diameter is small；Jet hole is located at nozzle head outlet end, and gasket seal is between nozzle head and nozzle body；Emulsification air duct runs through
Nozzle body is connected with the mixing chamber being located in nozzle head, and face nozzle tube hub line；The urine passageway runs through nozzle
Main body is connected with the mixing chamber both ends being located in nozzle head.
5. multichannel as claimed in claim 4 evaporates urea prilling system, it is characterised in that: the shape of the gasket seal is ring
Shape.
6. multichannel as claimed in claim 4 evaporates urea prilling system, it is characterised in that: the jet hole goes out positioned at nozzle head
Mouth end, is hollow tubular, and internal void is divided into taper type, small close to nozzle head one end diameter, far from nozzle head one end diameter
Greatly.
7. multichannel as described in claim 1 evaporates urea prilling system, it is characterised in that: the vapo(u)rization system include 1 and
Above evaporation unit and control valve, evaporation unit are connect with control valve；The evaporation unit includes multiple parallel arrangeds
Heating tube.
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| CN201510992074.2A CN105461361B (en) | 2015-12-25 | 2015-12-25 | Multichannel evaporates urea prilling system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4613697A (en) * | 1982-06-08 | 1986-09-23 | Montedison S.P.A. | Process for the displacement to the gaseous phase of the excess of NH3 |
| CN1400206A (en) * | 2001-08-01 | 2003-03-05 | 中国石油化工股份有限公司巴陵分公司 | Method for raising production capacity of evaporation system of urea equipment |
| CN201659045U (en) * | 2010-03-27 | 2010-12-01 | 山西丰喜化工设备有限公司 | Atomization spray head |
| CN102176977A (en) * | 2008-10-16 | 2011-09-07 | 卡萨尔尿素公司 | Spraying method and nozzle for atomization of a liquid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3667418B2 (en) * | 1996-02-01 | 2005-07-06 | 東洋エンジニアリング株式会社 | Method for producing granular urea |
-
2015
- 2015-12-25 CN CN201510992074.2A patent/CN105461361B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4613697A (en) * | 1982-06-08 | 1986-09-23 | Montedison S.P.A. | Process for the displacement to the gaseous phase of the excess of NH3 |
| CN1400206A (en) * | 2001-08-01 | 2003-03-05 | 中国石油化工股份有限公司巴陵分公司 | Method for raising production capacity of evaporation system of urea equipment |
| CN102176977A (en) * | 2008-10-16 | 2011-09-07 | 卡萨尔尿素公司 | Spraying method and nozzle for atomization of a liquid |
| CN201659045U (en) * | 2010-03-27 | 2010-12-01 | 山西丰喜化工设备有限公司 | Atomization spray head |
Non-Patent Citations (1)
| Title |
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| 尿素造粒塔并联使用的技改总结;庄永法;《氮肥技术》;20131231;第34卷(第6期);第25-26页 |
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Effective date of registration: 20180315 Address after: 124021 Hongqi Street, Shuangtaizi District, Panjin, Liaoning Applicant after: Northern Huajin Formosan Union Chemical Corporation Address before: 124021 Hongqi Street, Shuangtaizi District, Liaoning, China, No. 482, No. Applicant before: North Hua Jin Chemical Industry Group Co., Ltd |
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