CN109098822A - A kind of ammonia electric-controlling injection system - Google Patents

A kind of ammonia electric-controlling injection system Download PDF

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Publication number
CN109098822A
CN109098822A CN201811315115.4A CN201811315115A CN109098822A CN 109098822 A CN109098822 A CN 109098822A CN 201811315115 A CN201811315115 A CN 201811315115A CN 109098822 A CN109098822 A CN 109098822A
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CN
China
Prior art keywords
ammonia
output
storage tank
pressure
injection system
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
CN201811315115.4A
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Chinese (zh)
Inventor
郝赫
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.)
Kelin Lantai Environmental Technology (Changchun) Co.,Ltd.
Original Assignee
Changchun Faw Tengda Grease Chemical 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 Changchun Faw Tengda Grease Chemical Co Ltd filed Critical Changchun Faw Tengda Grease Chemical Co Ltd
Priority to CN201811315115.4A priority Critical patent/CN109098822A/en
Publication of CN109098822A publication Critical patent/CN109098822A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066Selective catalytic reduction [SCR]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066Selective catalytic reduction [SCR]
    • F01N3/208Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N9/00Electrical control of exhaust gas treating apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00Adding substances to exhaust gases
    • F01N2610/02Adding substances to exhaust gases the substance being ammonia or urea
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00Adding substances to exhaust gases
    • F01N2610/14Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • F01N2610/146Control thereof, e.g. control of injectors or injection valves
    • 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
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/40Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

The invention discloses a kind of ammonia electric-controlling injection systems, comprising: ammonia storage tank, for storing and discharging ammonia;Flow harvester is connected to ammonia storage tank and ammonia output pipe, and flow harvester is for measuring the ammonia amount passed through;Pressure-regulating valve is set on the pipeline between ammonia storage tank and flow harvester, for controlling the ammonia air pressure exported from ammonia storage tank.Flow harvester is set on the output pipe of ammonia storage tank, to obtain the spray volume of ammonia, achieve the purpose that export precision, and in the structure of the output end of ammonia storage tank setting pressure-regulating valve, the gas pressure for exporting ammonia storage tank is controlled by the design, by the pressure control of gas output in default range, to achieve the effect that stablize output, subsequent output has been effectively ensured in the process to the accuracy of control and the metering of ammonia output quantity, to guarantee the actual demand of the flux matched tail gas clean-up of ammonia exported, avoids waste from leaking or purify and be not thorough.

Description

A kind of ammonia electric-controlling injection system
Technical field
The present invention relates to purifying vehicle exhaust technical fields, more specifically to a kind of ammonia electric-controlling injection system.
Background technique
The exhaust gas processing device of automobile is mainly purified tail gas under the effect of the catalyst, to mitigate to environment The device of pollution.Vehicle exhaust is the exhaust gas generated when automobile use, contains hundreds of different compound, pollutant therein There are solid aerosol, carbon monoxide, carbon dioxide, hydrocarbon, oxynitrides, lead and oxygen sulfur compound etc..
Currently, the exhaust gas purification equipment of mainstream is realized by the way of catalyst, the vehicle exhaust of high temperature passes through purification When device, the cleanser in catalyst converter will enhance the activity of CO, HC and NOx gas, it is promoted to carry out certain redox Reaction is learned, to make pernicious gas become innocuous gas, vehicle exhaust is made to be purified.
However there is also certain defects for this existing catalyst cleaning mode, are mainly manifested in nitrogen oxides removal not Thoroughly, clarifier is difficult to adapt to the different adaptability for working condition work of vehicle, and long-time is easy miscellaneous using rear catalyst converter position Matter contamination and plugging, causes clean-up effect to decline.
To cope with this problem, inventor it has been investigated that: using lasting ammonia for giving the hair of the nitrogen oxides in tail gas Biochemical reaction also efficiently can thoroughly remove the nitrogen oxides in tail gas, such as adopt this tail gas clean-up design and require energy Enough onboard storage tanks that can store a large amount of ammonias, and be that one kind is preferably set using the storage ammonia medium that can absorb ammonia Meter.
In this design basis, how the ammonia efficiently and accurately stored in storage tank come into operation that there is also certain to ask Topic, is particularly due to ammonia storage tank in different environments, and the rate for discharging ammonia is different, leads to exported instability of flow, The quantitative ejection of ammonia below is impacted, the ammonia amount of ejection is difficult to match the demand of tail gas clean-up.
In conclusion it is unstable how to efficiently solve current ammonia output design discharge, ammonia output is caused to be difficult to essence The technical problem of trueization etc. is current those skilled in the art's urgent problem.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of ammonia electric-controlling injection system, the ammonia electric-controlling injection system Structure design can efficiently solve that current ammonia output design discharge is unstable, cause ammonia output to be difficult to refine etc. Technical problem.
In order to achieve the above object, the invention provides the following technical scheme:
A kind of ammonia electric-controlling injection system, comprising:
Ammonia storage tank, for storing and discharging ammonia;
Flow harvester is connected to the ammonia storage tank, and the other end is connected to ammonia output pipe, the flow harvester For measuring the ammonia amount passed through;
Pressure-regulating valve is set on the pipeline between ammonia storage tank and flow harvester, defeated from ammonia storage tank for controlling Ammonia air pressure out.
Preferably, in above-mentioned ammonia electric-controlling injection system, it is provided with output control valve on the ammonia output pipe, is used for Control the quantitative output of ammonia.
Preferably, in above-mentioned ammonia electric-controlling injection system, the ammonia electric-controlling injection system further includes master control set, described Master control set and the control of the flow harvester and output control valve connect, for controlling the output of ammonia.
Preferably, in above-mentioned ammonia electric-controlling injection system, the pressure-regulating valve is specially mechanical relief valve, is used for from institute State the ammonia that ammonia storage tank output pressure is constant preset value.
Preferably, in above-mentioned ammonia electric-controlling injection system, the pressure-regulating valve is specially to input solenoid valve, the input Solenoid valve and master control set control connect, and master control set controls institute according to the detection data that the flow harvester obtains State the opening and closing of input solenoid valve.
Preferably, in above-mentioned ammonia electric-controlling injection system, the flow harvester is connected with pressure detecting module, described Master control set controls the opening and closing of the input solenoid valve according to the pressure data that the pressure detecting module obtains.
Ammonia electric-controlling injection system provided by the invention, comprising: ammonia storage tank, for storing and discharging ammonia;Flow collection Device is connected to the ammonia storage tank, and the other end is connected to ammonia output pipe, and the flow harvester is for measuring the ammonia passed through Tolerance;Pressure-regulating valve is set on the pipeline between ammonia storage tank and flow harvester, for controlling from ammonia storage tank output Ammonia air pressure.The system design of ammonia output, is arranged flow harvester on the output pipe of ammonia storage tank, to obtain ammonia Spray volume, achieve the purpose that export precision set to solve the problems, such as that it is unstable that ammonia storage tank exports in the output end of ammonia storage tank The structure for setting pressure-regulating valve is controlled the gas pressure for exporting ammonia storage tank by the design, the pressure that gas is exported It controls in default range, to achieve the effect that stablize output, has been effectively ensured during subsequent output to ammonia output quantity Control and metering accuracy, thus guarantee output the flux matched tail gas clean-up of ammonia actual demand, avoid waste leak Or purification is not thorough, it is unstable to efficiently solve current ammonia output design discharge, and ammonia output is caused to be difficult to refine The technical issues of.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is the system structure diagram of ammonia electric-controlling injection system provided in an embodiment of the present invention;
Fig. 2 is the system structure diagram of another ammonia electric-controlling injection system provided in an embodiment of the present invention.
It is marked in attached drawing as follows:
Ammonia storage tank 1, flow harvester 2, pressure-regulating valve 3, master control set 4, output control valve 5.
Specific embodiment
The embodiment of the invention discloses a kind of ammonia electric-controlling injection systems, unstable to solve current ammonia output design discharge It is fixed, cause ammonia output to be difficult to the technical issues of refining.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is the system structure diagram of ammonia electric-controlling injection system provided in an embodiment of the present invention.
The ammonia electric-controlling injection system that the embodiment of the present invention provides, comprising: ammonia storage tank 1, for storing and discharging ammonia, Wherein ammonia storage tank 1 ammonia release have many influence factors, including in temperature, the absorption situation of adsorbent, tank gas it is close Degree etc., therefore only be difficult to control ammonia output stabilization with the structure of ammonia storage tank 1;It further include flow harvester 2, with storage Ammonia tank 1 is connected to, and the other end is connected to ammonia output pipe, and flow harvester 2 is for measuring the ammonia amount passed through;Pressure-regulating valve 3, it is set on the pipeline between ammonia storage tank 1 and flow harvester 2, for controlling the ammonia air pressure exported from ammonia storage tank 1.
The system design of ammonia output, is arranged flow harvester 2, on the output pipe of ammonia storage tank 1 to obtain ammonia The spray volume of gas achievees the purpose that export precision, to solve the problems, such as that it is unstable that ammonia storage tank 1 exports, in the output of ammonia storage tank 1 The gas pressure for exporting ammonia storage tank 1 is controlled by the design, gas is exported by the structure of end setting pressure-regulating valve 3 Pressure control in default range, to achieve the effect that stablize output, be effectively ensured during subsequent output to ammonia The accuracy of control and the metering of output quantity avoids wave to guarantee the actual demand of the flux matched tail gas clean-up of ammonia of output Expense leakage or purification are not thorough, and it is unstable to solve currently used ammonia output design discharge, cause ammonia output difficult The technical issues of to refine.
It is accurately controlled to reach the ammonia ejection of output end, output control valve 5 is provided on ammonia output pipe, for controlling The quantitative output of ammonia processed;Ammonia electric-controlling injection system further includes master control set 4, master control set 4 and flow harvester 2 and defeated The control of control valve 5 connection out, for controlling the output of ammonia.
This design provided in this embodiment by the way that output control valve 5 is arranged on ammonia output pipe, and is filled with master control The opening and closing work for setting 4 control valves, ammonia output end output pressure substantially in a certain range when, can be realized ammonia injection Amount accurately controls, and enables to the accuracy of control and the metering of ammonia output quantity during exporting, to guarantee the ammonia of output The actual demand of flux matched tail gas clean-up avoids waste from leaking or purify and is not thorough.
For the specific design for optimizing pressure-regulating valve 3 in above-mentioned ammonia electric-controlling injection system, the present embodiment technical side is proposed Case: pressure-regulating valve 3 is specially mechanical relief valve, for being the ammonia of constant preset value from 1 output pressure of ammonia storage tank.Wherein machine Tool pressure reducing valve refers to by adjusting, and inlet pressure is reduced to the exit pressure levels of a certain needs, and by the energy of medium itself Amount makes outlet pressure automatically keep stable valve, and mechanical relief valve is only to be designed by own institutions, does not need automatically controlled, gas Other external connection powers such as control can reach such valve of the effect, can be preferably real by the design of mechanical relief valve The stabilization of existing ammonia output pressure, and have structure simple, implement easy to operate, the lower advantage of design cost.
Referring to Fig. 2, Fig. 2 is the system structure signal of another ammonia electric-controlling injection system provided in an embodiment of the present invention Figure.
It is similar with above-described embodiment principle, the design of another pressure-regulating valve 3 is present embodiments provided, pressure is adjusted Valve 3 is specially to input solenoid valve, and input solenoid valve and the control of master control set 4 connect, and master control set 4 is according to flow harvester 2 The opening and closing of the detection data control input solenoid valve of acquisition.
The mechanical relief valve in above-described embodiment is replaced using the design that master control set 4 controls solenoid valve in the present embodiment, The effect of stable output pressure can be equally obtained, in addition to this can accomplish to adapt to by pipeline by solenoid valve control ammonia Property control effect, that is, be more suitable the ammonia release conditions of current ammonia storage tank 1 and the ammonia Expenditure Levels of output end.
The present embodiment design is to make further extension, flow collection on the basis of above-described embodiment technical solution Device 2 is connected with pressure detecting module, the pressure data control input solenoid valve that master control set 4 is obtained according to pressure detecting module Opening and closing.
Because having pressure detecting module on flow harvester 2, master control set 4 can be to flowing through flow harvester 2 Gas pressure be monitored, the folding of solenoid valve is controlled according to gas pressure with this, to control pressure, It enables and subsequent purification consumption is more suitable for by the ammonia amount of flow harvester 2, can adapt to ammonia storage tank 1 with season ammonia release Actual conditions.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one The widest scope of cause.

Claims (6)

1. a kind of ammonia electric-controlling injection system characterized by comprising
Ammonia storage tank, for storing and discharging ammonia;
Flow harvester is connected to the ammonia storage tank, and the other end is connected to ammonia output pipe, and the flow harvester is used for Measure the ammonia amount passed through;
Pressure-regulating valve is set on the pipeline between ammonia storage tank and flow harvester, for controlling from ammonia storage tank output Ammonia air pressure.
2. ammonia electric-controlling injection system according to claim 1, which is characterized in that be provided on the ammonia output pipe Output control valve, for controlling the quantitative output of ammonia.
3. ammonia electric-controlling injection system according to claim 2, which is characterized in that the ammonia electric-controlling injection system also wraps It includes master control set, the master control set and the flow harvester and output control valve control connects, for controlling ammonia Output.
4. ammonia electric-controlling injection system according to claim 3, which is characterized in that the pressure-regulating valve is specially machinery Pressure reducing valve, for being the ammonia of constant preset value from the ammonia storage tank output pressure.
5. ammonia electric-controlling injection system according to claim 3, which is characterized in that the pressure-regulating valve is specially to input Solenoid valve, the input solenoid valve and master control set control connect, and master control set is obtained according to the flow harvester Detection data control it is described input solenoid valve opening and closing.
6. ammonia electric-controlling injection system according to claim 5, which is characterized in that the flow harvester is connected with pressure Power detection module, the master control set control the input solenoid valve according to the pressure data that the pressure detecting module obtains Opening and closing.
CN201811315115.4A 2018-11-06 2018-11-06 A kind of ammonia electric-controlling injection system Pending CN109098822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811315115.4A CN109098822A (en) 2018-11-06 2018-11-06 A kind of ammonia electric-controlling injection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811315115.4A CN109098822A (en) 2018-11-06 2018-11-06 A kind of ammonia electric-controlling injection system

Publications (1)

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CN109098822A true CN109098822A (en) 2018-12-28

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206338105U (en) * 2016-12-19 2017-07-18 吉林省众鑫汽车装备有限公司 A kind of solid-state SCR system reducer feeding device
CN107781001A (en) * 2017-08-16 2018-03-09 吉林省众鑫汽车装备有限公司 Vehicle and its exhaust treatment system
CN108278144A (en) * 2018-03-06 2018-07-13 中国第汽车股份有限公司 Ammonia spraying system and its control method
CN209053665U (en) * 2018-11-06 2019-07-02 长春一汽四环腾达油脂化工有限公司 A kind of ammonia electric-controlling injection system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206338105U (en) * 2016-12-19 2017-07-18 吉林省众鑫汽车装备有限公司 A kind of solid-state SCR system reducer feeding device
CN107781001A (en) * 2017-08-16 2018-03-09 吉林省众鑫汽车装备有限公司 Vehicle and its exhaust treatment system
CN108278144A (en) * 2018-03-06 2018-07-13 中国第汽车股份有限公司 Ammonia spraying system and its control method
CN209053665U (en) * 2018-11-06 2019-07-02 长春一汽四环腾达油脂化工有限公司 A kind of ammonia electric-controlling injection system

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Effective date of registration: 20200909

Address after: 136000 No. 1, Pioneer Street, Gongzhuling Economic Development Zone, Siping City, Jilin Province

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Address after: Room 5128, Huada Tianshi innovation and service center, intersection of Xinxiu street and Dashun Road, Kuancheng District, Changchun City, Jilin Province

Applicant after: Kelin Lantai Environmental Technology (Changchun) Co.,Ltd.

Address before: 136000 No.1 Chuangye street, Gongzhuling Economic Development Zone, Siping City, Jilin Province

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