CN106369630A - Safe energy-saving combustion control system and method applied to torch system - Google Patents
Safe energy-saving combustion control system and method applied to torch system Download PDFInfo
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- CN106369630A CN106369630A CN201610769530.1A CN201610769530A CN106369630A CN 106369630 A CN106369630 A CN 106369630A CN 201610769530 A CN201610769530 A CN 201610769530A CN 106369630 A CN106369630 A CN 106369630A
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- gas
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2227/00—Ignition or checking
- F23N2227/18—Applying test signals, e.g. periodic
Abstract
The invention discloses a safe energy-saving combustion control system applied to a torch system. The safe energy-saving combustion control system comprises a diffuse gas detecting system for detecting whether the torch system emits diffuse gas or not and detecting concentration of diffuse gas, an ever-burning lamp fuel gas control system for lighting an ever-burning lamp after detecting a diffuse gas signal, a nitrogen gas blowing-sweeping control system for carrying out blowing-sweeping after detecting the diffuse gas signal and a computing control unit. The invention further discloses a control method which comprises the following steps of: controlling an igniter to start ignition after the computing control unit receives a diffuse gas emission signal, starting a flame-transfer fuel gas cut-off valve, and lighting the ever-burning lamp; and opening a nitrogen gas quick cut-off valve, switching off an ever-lighting lamp unit in a delayed manner when the computing control unit receives a signal that diffuse signal emission is ended, and closing a nitrogen gas quick cut-off valve. In case of ensuring safe emission of the torch system, fuel energy is saved to the greatest extent for users, operation cost is reduced, resource waste is reduced, and the service life of the safe energy-saving combustion control system is prolonged.
Description
Technical field
The present invention relates to a kind of flare system Combustion System technique, especially a kind of energy-saving safe being applied to flare system
Combustion control system and method.
Background technology
Coal chemical engineering equipment, petrochemical plant and oil refining apparatus all inevitably discharge in normal production and accident
Considerable amount of flammable and explosive substance or toxic and harmful, in order to prevent fire, the generation of explosion accident and avoid exhaust emission,
Guarantee equipment and personal safety, require the chemical plant installations such as Coal Chemical Industry, petrochemical industry, oil refining supporting setting flare system afterwards, use
To process these the inflammable and explosive or toxic and harmfuls giving off.
Existing flare system operational mode be altar lamp sustained combustion, nitrogen purging persistently purging, sour gas/ammonia/
Low heat value torch continues combustion gas and mixes burning operational mode, and this pattern there is the serious wasting of resources and automaticity is low asks
Topic.Taking the altar lamp wasting of resources as a example, altar lamp fuel gas consumption selects 4nm by national standard requirement3/ h, generally single flare tip is long
Bright lamp is not less than 3, so calculates existing flare system operational mode 1 year air consumption of list torch altar lamp which burns day and night unit and is:
Q=4nm3/ h*3*24h/ days * 365 days=105120nm3
And actually used flare system only cutting off the water, have a power failure or discharged in finite time section during driving and parking, and hold
The continuous time is only a few hours or several days, thus can have the seriousness of altar lamp sustained combustion operational mode energy waste.
Equally, nitrogen purging is also such, and the original nitrogen purge mode of flare system is to continue purge mode, Ci Zhongmo
Formula system has or not to diffuse nitrogen and be all continuously flare system and is purged, and the space division system that this is accomplished by full factory continues work
Make, virtually cause a series of energy waste.
The exotic fuels gas of sour gas/ammonia/low heat value torch mix burning waste problem more very, for sour gas/ammonia/
For low heat value torch, determine, this kind of gas utilizes torch by the characteristic of gas self-supporting burning capacity itself, heat storage capacity difference
It is necessary to provide pre-burning cylinder to carry out high heating value gas-preheating or the burning of high heating value gas mixing during discharge.Existing burning pattern of mixing is
Often with burning pattern, exotic fuels blast expense poor to the adaptive ability of discharge tolerance be serious and cannot ensure combustion during little tolerance
Burn stability, safety.
Content of the invention
It is an object of the invention to provide a kind of energy-saving safe combustion control system being applied to flare system and method, operation
Simplicity, control accuracy is high, it is possible to increase fuel availability, reduces the wasting of resources, improves the service life of system.
For achieving the above object, the present invention adopts following technical proposals:
A kind of energy-saving safe combustion control system being applied to flare system, has or not diffused gas including detection flare system
Discharge and diffused gas concentration diffused gas detecting system, the altar lamp fuel that diffused gas signal lights altar lamp is detected
Gas control system, the nitrogen purging control system that diffused gas signal purged and Operations Analysis is detected,
Described diffused gas detecting system includes being located at respectively flare system diffused gas discharge pipe line upper liquid separating tank and water
Pressure-detecting device between sealed cans and flow detector, the input detection diffused gas discharge pipe line of pressure-detecting device
The pressure value of interior diffused gas, the outfan of pressure-detecting device is connected with the pressure signal input end of Operations Analysis, stream
The input of amount detecting device detects the flow value of diffused gas in diffused gas discharge pipe line, the outfan of flow detector
It is connected with the flow signal input of Operations Analysis；
Altar lamp fuel gas control system includes the biography being switched on and off fuel gas on altar lamp fuelgas pipeline
Flame gas cut off valve, the control end of described biography flame gas cut off valve is connected with the combustion gas make-and-break signal outfan of Operations Analysis
Connect；Nitrogen purging control system includes the nitrogen repid cut-off valve being switched on and off nitrogen on nitrogen delivery pipe line, nitrogen
The control end of gas repid cut-off valve is connected with the nitrogen make-and-break signal outfan of Operations Analysis.
Further, described altar lamp fuelgas pipeline along along fuel gas transmission direction pass flame gas cut off valve front also
It is connected with fuel gas and mixes burning pipeline, fuel gas is mixed and is provided with fuel gas and mixes burning regulating valve on burning pipeline, and fuel gas mixes burning regulating valve
The burning gas make-and-break signal outfan of mixing of control end and Operations Analysis be connected.
Further, altar lamp fuelgas pipeline is connected with the flare tip of flare system, in the accumulation of heat body of described flare tip
It is provided with temperature-detecting device, the outfan of temperature-detecting device is connected with the temperature signal input of Operations Analysis.
A kind of energy-saving safe method for controlling combustion being applied to flare system, using the above-mentioned safety being applied to flare system
Energy-saving combustion control system carries out Combustion System, comprises the following steps:
Step is lighted and closed to a, altar lamp, and the pressure signal input end of Operations Analysis is examined with flow signal input
When measuring effective diffused gas discharge signal, the lighter starting ignition of flare tip, the combustion gas break-make letter of Operations Analysis
Signal is connected in the output combustion gas of number outfan, passes flame gas cut off valve and turns supply on fuel gas, altar lamp is lighted；Operations Analysis
Pressure signal input end and flow signal input detect when there is no effective diffused gas discharge signal, operation control list
Combustion gas make-and-break signal outfan output fuel gas shutoff signal after first time delay for a period of time, passes flame gas cut off valve and closes, altar lamp
Close；
B, nitrogen purging open and close step, the pressure signal input end of Operations Analysis and flow signal input
When effective diffused gas discharge signal is detected, the nitrogen make-and-break signal outfan output nitrogen of Operations Analysis connects letter
Number, nitrogen repid cut-off valve is opened, and starts nitrogen purging；The pressure signal input end of Operations Analysis is inputted with flow signal
End detects when not having effective diffused gas discharge signal, and after Operations Analysis time delay for a period of time, nitrogen make-and-break signal is defeated
Go out end output nitrogen shutdown signal, nitrogen repid cut-off valve cuts out, and stops nitrogen purging；
C, fuel gas mix burning step, and the pressure signal input end of Operations Analysis has been detected with flow signal input
During the diffused gas discharge signal imitated, burning gas connection letter is mixed in the burning gas make-and-break signal outfan output of mixing of Operations Analysis
Number, fuel gas is mixed burning regulating valve and is opened, and realizes mixing burning gas switching；Device for detecting temperature detects the temperature in flare tip accumulation of heat body
Degree, and according to mixing burning gas characteristic, Operations Analysis control flare tip heat storage for mixing burning air stripping for combustion decomposition temperature
In the range of degree, the pressure signal input end of Operations Analysis and flow signal input detect does not have effective diffused gas
During discharge signal, burning gas shutdown signal is mixed in the burning gas make-and-break signal outfan output of mixing of Operations Analysis, and fuel gas is mixed
Burn regulating valve to close, mix burning gas excision.
Further, Operations Analysis receive pressure-detecting device outfan and flow detector output end signal,
Judge whether diffused gas flow velocity reaches flare tip extra exit flow velocity, diffused gas flow velocity reaches permissible velocity, operation control
The nitrogen make-and-break signal outfan output nitrogen shutdown signal of unit, nitrogen repid cut-off valve cuts out, and stops nitrogen purging, diffuses
When gas flow rate is less than safe operation setting value, the nitrogen make-and-break signal outfan output nitrogen of Operations Analysis connects letter
Number, nitrogen repid cut-off valve is opened, and starts nitrogen purging.
The invention has the beneficial effects as follows,
1st, the present invention diffuses throughput and pressure with flare system and inputs for system, with automatic valve, lighter for execution
The closed-loop control system of unit, greatly improves control accuracy and the capacity of resisting disturbance of system.By discharging in flare system
From the pressure detecting in past, setting flow detector and pressure-detecting device on pipeline, to judge that dispersing gas discharge is changed into simultaneously
Carry out flow detection and pressure detecting, it is to avoid there is gas in pipeline but do not flow and also judge dispersing gas discharge signal, logical
Inflow-rate of water turbine detects, can accurately judge dispersing gas discharge signal, after Operations Analysis receive dispersing gas discharge signal, controls
Lighter starting ignition, altar lamp and biography flame gas cut off valve are opened to supply fuel gas, thus successful ignition is long within the several seconds
Bright lamp；At the end of Operations Analysis receive dispersing gas discharge, Operations Analysis time-delay closing altar lamp unit.Torch
Altar lamp operational mode is self-starting and compatibility operation pattern kept burning day and night by Mode change kept burning day and night before, thus ensureing torch system
Save fuel energy, reduce operating cost for user to greatest extent in the case of system safety dumping；Further, since altar lamp exists
System is in holding state in the case of no discharging, and during this, altar lamp avoids lasting high temperature ablation, thus in certain journey
The service life of altar lamp unit is improved on degree, reduces cost of equipment maintenance.
2nd, nitrogen purge mode of the present invention is switched to start purge mode as needed by lasting purge mode, detects and diffuses
Signal, nitrogen repid cut-off valve is opened, and starts nitrogen purging；Detect and do not diffuse signal, nitrogen repid cut-off valve cuts out, close
Close nitrogen purging.Open and close automatically nitrogen purging, reducing energy consumption as needed.Additionally, computing detector unit is according to diffusing
Whether gas velocity automatic decision diffused gas flow velocity reaches flare tip extra exit flow velocity, reaches permissible velocity, nitrogen is quickly cut
Disconnected valve cuts out, and stops nitrogen purging, and when diffused gas flow velocity is less than safe operation setting value, nitrogen repid cut-off valve is opened, and opens
Dynamic nitrogen purging.Avoid micro dispersing gas to cause flame front to be tempered, micro dispersing gas is detected, air-flow is diffused in nitrogen purging increase
Speed, it is to avoid tempering.
3rd, Operations Analysis detect diffused gas discharge signal, and automatic switching mixes burning gas, and device for detecting temperature is examined
Survey the temperature in flare tip accumulation of heat body, and according to mixing burning gas characteristic, Operations Analysis by flare tip heat storage control for
Mix burning air stripping to supply in combustion decomposition temperature range, thus realizing ensureing that diffusion system is pacified with minimum high heating value gas consumption
Entirely, environmental protection burning and exhausting is processed.
Brief description
Fig. 1 is present configuration schematic diagram；
Fig. 2 is line construction schematic diagram of the present invention；
Fig. 3 is that altar lamp lights and cuts out block diagram；
Fig. 4 is that nitrogen purging opens and closes block diagram；
Fig. 5 is that fuel gas mixes burning step.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of energy-saving safe combustion control system being applied to flare system, including detection torch system
System have or not diffused gas discharge and diffused gas concentration diffused gas detecting system, detect diffused gas signal light kept burning day and night
The altar lamp fuel gas control system of lamp, the nitrogen purging control system that diffused gas signal purged and computing control is detected
Unit processed, Operations Analysis adopt plc.
Described diffused gas detecting system includes being located at respectively flare system diffused gas discharge pipe line upper liquid separating tank and water
Pressure transmitter between sealed cans and effusion meter, diffused gas in the input detection diffused gas discharge pipe line of pressure transmitter
Pressure value, the outfan of pressure transmitter is connected with the pressure signal input end of plc, the input detection dispersing gas of effusion meter
The flow value of diffused gas in body discharge pipe line, the outfan of effusion meter is connected with the flow signal input of plc.
The fuelgas pipeline of offer exotic fuels gas includes altar lamp fuelgas pipeline and fuel gas mixes burning pipeline；Kept burning day and night
Lamp fuel gas control system includes the biography flame gas cut off valve being switched on and off fuel gas on altar lamp fuelgas pipeline,
The described control end passing flame gas cut off valve is connected with the combustion gas make-and-break signal outfan of plc；Described altar lamp fuelgas pipeline
It is also associated with fuel gas in the front passing flame gas cut off valve along along fuel gas transmission direction and mixes burning pipeline, fuel gas is mixed on burning pipeline
It is provided with fuel gas and mixes burning regulating valve, fuel gas mixes the control end burning regulating valve and mixing of plc burns gas make-and-break signal outfan
Connect.
Nitrogen purging control system includes the nitrogen fast shut-off being switched on and off nitrogen on nitrogen delivery pipe line
Valve, the control end of nitrogen repid cut-off valve is connected with the nitrogen make-and-break signal outfan of plc.
Altar lamp fuelgas pipeline is connected with the flare tip of flare system, is provided with temperature in the accumulation of heat body of described flare tip
Detection means, the outfan of temperature-detecting device is connected with the temperature signal input of plc.
A kind of energy-saving safe method for controlling combustion being applied to flare system, using the above-mentioned safety being applied to flare system
Energy-saving combustion control system carries out Combustion System, comprises the following steps:
As shown in figure 3, altar lamp lights and cut out step, the pressure signal input end of plc is examined with flow signal input
When measuring effective diffused gas discharge signal, the lighter starting ignition of flare tip, the combustion gas make-and-break signal outfan of plc is defeated
Go out combustion gas and connect signal, pass flame gas cut off valve and turn supply on fuel gas, altar lamp is lighted；The pressure signal input end of plc with
Flow signal input detects when not having effective diffused gas discharge signal, combustion gas break-make letter after plc time delay for a period of time
Number outfan output fuel gas shutoff signal, passes flame gas cut off valve and closes, altar lamp cuts out.
As shown in figure 4, nitrogen purging opens and closes step, the pressure signal input end of plc and flow signal input
When effective diffused gas discharge signal is detected, the nitrogen make-and-break signal outfan output nitrogen of plc connects signal, and nitrogen is fast
Fast stop valve is opened, and starts nitrogen purging；The pressure signal input end of plc and flow signal input detect not effectively
During diffused gas discharge signal, nitrogen make-and-break signal outfan output nitrogen shutdown signal after plc time delay for a period of time, nitrogen is fast
Fast stop valve cuts out, and stops nitrogen purging；Plc receives pressure transmitter outfan and effusion meter output end signal, judges to diffuse
Whether gas flow rate reaches flare tip extra exit flow velocity, and diffused gas flow velocity reaches permissible velocity, the nitrogen make-and-break signal of plc
Outfan exports nitrogen shutdown signal, and nitrogen repid cut-off valve cuts out, and stops nitrogen purging, and diffused gas flow velocity is less than safety and transports
During row setting value, the nitrogen make-and-break signal outfan output nitrogen of plc connects signal, and nitrogen repid cut-off valve is opened, and starts nitrogen
Air-blowing is swept.
As shown in figure 5, fuel gas mixes burning step, the pressure signal input end of plc has been detected with flow signal input
During the diffused gas discharge signal imitated, burning gas connection signal, fuel gas are mixed in the burning gas make-and-break signal outfan output of mixing of plc
Mix burning regulating valve to open, realize mixing burning gas switching；Device for detecting temperature detects the temperature in flare tip accumulation of heat body, and according to mixing
Burn gas characteristic, flare tip heat storage is controlled supplying in combustion decomposition temperature range for mixing burning air stripping by plc, and the pressure of plc is believed
Number input and flow signal input detect when not having effective diffused gas discharge signal, and plc mixes burning gas break-make
Burning gas shutdown signal is mixed in signal output part output, and fuel gas is mixed burning regulating valve and closed, and mixes burning gas excision.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not model is protected to the present invention
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay the various modifications that creative work can make or deformation still within protection scope of the present invention.
Claims (5)
1. a kind of energy-saving safe combustion control system being applied to flare system has it is characterised in that including detection flare system
No the diffused gas detecting system of diffused gas discharge and diffused gas concentration, diffused gas signal is detected and light altar lamp
Altar lamp fuel gas control system, the nitrogen purging control system that diffused gas signal purged and operation control list is detected
Unit,
Described diffused gas detecting system includes being located at respectively flare system diffused gas discharge pipe line upper liquid separating tank and water sealed tank
Between pressure-detecting device and flow detector, pressure-detecting device input detection diffused gas discharge pipe line in puts
The pressure value of scattered gas, the outfan of pressure-detecting device is connected with the pressure signal input end of Operations Analysis, and flow is examined
The input surveying device detects flow value, the outfan of flow detector and the fortune of diffused gas in diffused gas discharge pipe line
The flow signal input calculating control unit connects；
Altar lamp fuel gas control system includes the biography flame combustion being switched on and off fuel gas on altar lamp fuelgas pipeline
Gas stop valve, the control end of described biography flame gas cut off valve is connected with the combustion gas make-and-break signal outfan of Operations Analysis；Nitrogen
The nitrogen repid cut-off valve being switched on and off nitrogen that control system includes on nitrogen delivery pipe line is swept in air-blowing, and nitrogen is quick
The control end of stop valve is connected with the nitrogen make-and-break signal outfan of Operations Analysis.
2. as claimed in claim 1 a kind of energy-saving safe combustion control system being applied to flare system it is characterised in that institute
State altar lamp fuelgas pipeline along along fuel gas transmission direction pass flame gas cut off valve front be also associated with fuel gas mix burning pipe
Line, fuel gas is mixed and is provided with fuel gas and mixes burning regulating valve on burning pipeline, and fuel gas mixes the control end burning regulating valve and operation control
The burning gas make-and-break signal outfan of mixing of unit connects.
3. as claimed in claim 2 a kind of energy-saving safe combustion control system being applied to flare system it is characterised in that long
Bright lamp fuelgas pipeline is connected with the flare tip of flare system, is provided with temperature-detecting device in the accumulation of heat body of described flare tip,
The outfan of temperature-detecting device is connected with the temperature signal input of Operations Analysis.
4. a kind of energy-saving safe method for controlling combustion being applied to flare system, using claims 1 to 3 any one claim
A kind of described energy-saving safe combustion control system being applied to flare system carry out Combustion System it is characterised in that include with
Lower step:
Step is lighted and closed to a, altar lamp, and the pressure signal input end of Operations Analysis is detected with flow signal input
Effectively during diffused gas discharge signal, the lighter starting ignition of flare tip, the combustion gas make-and-break signal of Operations Analysis is defeated
Go out end output combustion gas and connect signal, pass flame gas cut off valve and turn supply on fuel gas, altar lamp is lighted；The pressure of Operations Analysis
Force signal input and flow signal input detect when not having effective diffused gas discharge signal, and Operations Analysis prolong
When for a period of time after combustion gas make-and-break signal outfan output fuel gas shutoff signal, pass flame gas cut off valve close, altar lamp close；
B, nitrogen purging open and close step, and the pressure signal input end of Operations Analysis is detected with flow signal input
During to effective diffused gas discharge signal, the nitrogen make-and-break signal outfan output nitrogen of Operations Analysis connects signal,
Nitrogen repid cut-off valve is opened, and starts nitrogen purging；The pressure signal input end of Operations Analysis and flow signal input
Detect when there is no effective diffused gas discharge signal, nitrogen make-and-break signal output after Operations Analysis time delay for a period of time
End output nitrogen shutdown signal, nitrogen repid cut-off valve cuts out, and stops nitrogen purging；
C, fuel gas mix burning step, and the pressure signal input end of Operations Analysis and flow signal input detect effectively
During diffused gas discharge signal, burning gas connection signal is mixed in the burning gas make-and-break signal outfan output of mixing of Operations Analysis,
Fuel gas is mixed burning regulating valve and is opened, and realizes mixing burning gas switching；Device for detecting temperature detects the temperature in flare tip accumulation of heat body, and
According to mixing burning gas characteristic, Operations Analysis control flare tip heat storage for mixing burning air stripping for combustion decomposition temperature range
Interior, the pressure signal input end of Operations Analysis and flow signal input detect does not have effective diffused gas discharge letter
Number when, Operations Analysis mix burning gas make-and-break signal outfan output mix burning gas shutdown signal, fuel gas mix burning adjust
Valve cuts out, and mixes burning gas excision.
5. as claimed in claim 4 a kind of energy-saving safe method for controlling combustion being applied to flare system it is characterised in that fortune
Calculate control unit and receive pressure-detecting device outfan and flow detector output end signal, whether judge diffused gas flow velocity
Reach flare tip extra exit flow velocity, diffused gas flow velocity reaches permissible velocity, the nitrogen make-and-break signal of Operations Analysis is defeated
Go out end output nitrogen shutdown signal, nitrogen repid cut-off valve cuts out, and stops nitrogen purging, and diffused gas flow velocity is less than safe operation
During setting value, the nitrogen make-and-break signal outfan output nitrogen of Operations Analysis connects signal, and nitrogen repid cut-off valve is opened,
Start nitrogen purging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769530.1A CN106369630A (en) | 2016-08-30 | 2016-08-30 | Safe energy-saving combustion control system and method applied to torch system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610769530.1A CN106369630A (en) | 2016-08-30 | 2016-08-30 | Safe energy-saving combustion control system and method applied to torch system |
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| Publication Number | Publication Date |
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| CN106369630A true CN106369630A (en) | 2017-02-01 |
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ID=57901873
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610769530.1A Pending CN106369630A (en) | 2016-08-30 | 2016-08-30 | Safe energy-saving combustion control system and method applied to torch system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112413640A (en) * | 2020-11-23 | 2021-02-26 | 上海轻叶能源股份有限公司 | Intelligent gas burner ignition system |
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| CB02 | Change of applicant information |
Address after: The Jiyang County of Ji'nan City, Shandong province 251400 East Street, Taixing Economic Development Zone No. 6 Applicant after: Shandong innovation energy Polytron Technologies Inc Address before: The Jiyang County of Ji'nan City, Shandong province 251400 East Street, Taixing Economic Development Zone No. 6 Applicant before: Ji'nan Tongzhi Innovation Energy Technology Co., Ltd. |
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Application publication date: 20170201 |
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