CN109539257A - A kind of thermal desorption production line denitrating system - Google Patents
A kind of thermal desorption production line denitrating system Download PDFInfo
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- CN109539257A CN109539257A CN201811629385.2A CN201811629385A CN109539257A CN 109539257 A CN109539257 A CN 109539257A CN 201811629385 A CN201811629385 A CN 201811629385A CN 109539257 A CN109539257 A CN 109539257A
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- China
- Prior art keywords
- flue gas
- combustion
- gas
- combustion air
- production line
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/007—Mixing tubes, air supply regulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
Abstract
The invention discloses a kind of thermal desorption production line denitrating system, which includes ultralow NOx type burner, and the ultralow NOx type burner includes circulating flue gas entrance, combustion air inlet and gas inlet；Circulating flue gas fills mechanism, and circulating flue gas filling mechanism includes flue gas blower；Combustion air fills mechanism, and combustion air filling mechanism includes combustion fan, and the combustion fan is connected by pipeline with the combustion air inlet.Thermal desorption production line denitrating system provided by the present application, it is simple and reasonable, it is easy to install and use.The burner that former rotary kiln is replaced using ultralow NOx type burner mixes combustion gas quickly, uniformly with air and flue gas using injection mode, advantageously reduces NOx generation.High speed ejection is caused inner flue gas of the stove to recycle by combustion gas and air, is reduced NOx and is generated.Flue gas recirculation blower fan mixes flue gas in original system smoke pipe and combustion air, reduces oxygen concentration in combustion air, reduces NOx output.
Description
Technical field
The present invention relates to denitration device technical fields, more particularly to a kind of thermal desorption production line denitrating system.
Background technique
Rotary kiln refers to rotary calcining kiln (being commonly called as rotary kiln), belongs to building equipment class.Rotary kiln can by processing material difference
It is divided into cement kiln, chemical metallurgy kiln and limekiln.Cement kiln is mainly used for calcination of cement clinker, divides dry production cement kiln and wet
Method produces cement kiln two major classes.Chemical metallurgy kiln is then mainly used for the poor iron ore magnetic roasting of metallurgy industry steel plant；Chromium, josephinite
Oxidizing roasting；Refractory factory roasts high-aluminium vanadine mine and aluminium manufacturer roasts clinker, aluminium hydroxide；Chemical plant roasts chrome ore and chromium
The classes mineral such as miberal powder.Limekiln (i.e. active lime kiln) is used to roast steel plant, the active lime of ferroalloy works and light-burned white
Marble.
The rotary kiln of thermal desorption line configuration, by 1 neat gas burner heat supply, traditional burner NOx emission is dense
Degree is higher, can produce bigger effect to ambient enviroment.As it can be seen that the discharge amount for how reducing rotary furnace NOx is those skilled in the art
Member's technical problem urgently to be solved.
Summary of the invention
The present invention provides a kind of thermal desorption production line denitrating systems.
The present invention provides following schemes:
A kind of thermal desorption production line denitrating system, comprising:
Ultralow NOx type burner, the ultralow NOx type burner include circulating flue gas entrance, combustion air inlet and natural
Gas entrance；
Circulating flue gas fills mechanism, and circulating flue gas filling mechanism includes flue gas blower, flue gas blower one end and flue gas
Main pipe rail is connected, and the other end is connected by pipeline with circulating flue gas entrance；
Combustion air fills mechanism, and combustion air filling mechanism includes combustion fan, the combustion fan by pipeline with
The combustion air inlet is connected；
Natural gas fills mechanism, and the natural gas filling mechanism is connected by the first gas pipeline with the gas inlet, institute
It states and is provided with the first solenoid valve on the first gas pipeline；
Ignition mechanism, the ignition mechanism are used for the natural gas igniting at the gas inlet；
Combustion controller, the flue gas blower, combustion fan and the first solenoid valve are electrically connected with the combustion controller respectively.
Preferred: the ignition mechanism includes igniter burner, ignited natural gas filling mechanism and igniting air charging machine
Structure, the ignited natural gas filling mechanism are connected by the second gas pipeline with the igniter burner, second gas pipeline
On be provided with second solenoid valve；Igniting air filling mechanism includes igniting blower, the igniting blower and pipeline and institute
Igniter burner is stated to be connected；The second solenoid valve and the igniting blower are connected with the combustion controller respectively.
Preferred: the igniter burner includes the high-tension transformer for generating electric spark.
Preferred: the igniter burner includes flame controller, and the flame controller is used for monitors ignition situation, institute
Combustion controller is stated to be electrically connected with the flame controller；The combustion controller is used for according to the ignition conditions control monitored
The folding condition of the second solenoid valve.
Preferred: oxygen content is 2.5-3.5% in the flue gas of circulating flue gas filling mechanism filling.
Preferred: oxygen content is not less than 18% in the combustion air of combustion air filling mechanism filling.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
By the invention it is possible to realize a kind of thermal desorption production line denitrating system, in an implementation mode, which be can wrap
Ultralow NOx type burner is included, the ultralow NOx type burner includes circulating flue gas entrance, combustion air inlet and natural gas
Entrance；Circulating flue gas fills mechanism, and circulating flue gas filling mechanism includes flue gas blower, flue gas blower one end and flue gas
Main pipe rail is connected, and the other end is connected by pipeline with circulating flue gas entrance；Combustion air fills mechanism, the combustion air filling
Mechanism includes combustion fan, and the combustion fan is connected by pipeline with the combustion air inlet；Natural gas fills mechanism, institute
It states natural gas filling mechanism to be connected by the first gas pipeline with the gas inlet, be provided on first gas pipeline
First solenoid valve；Ignition mechanism, the ignition mechanism are used for the natural gas igniting at the gas inlet；Combustion System
Device, the flue gas blower, combustion fan and the first solenoid valve are electrically connected with the combustion controller respectively.It is provided by the present application
Thermal desorption production line denitrating system, it is simple and reasonable, it is easy to install and use.Former revolution is replaced using ultralow NOx type burner
The burner of kiln mixes combustion gas quickly, uniformly with air and flue gas, it is raw to be advantageously reduced NOx using injection mode
At.High speed ejection is caused inner flue gas of the stove to recycle by combustion gas and air, is reduced NOx and is generated.Flue gas recirculation blower fan, by original system cigarette
Flue gas and combustion air mixing, reduce oxygen concentration in combustion air, reduce NOx output in pipe.
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of connection block diagram of thermal desorption production line denitrating system provided in an embodiment of the present invention;
Fig. 2 is the structural schematic diagram of ultralow NOx type burner provided in an embodiment of the present invention.
In figure: ultralow NOx type burner 1, circulating flue gas entrance 101, combustion air inlet 102, gas inlet 103,
Flue gas blower 2, flue gas main pipe rail 3, combustion fan 4, the first gas pipeline 5, the first solenoid valve 6, combustion controller 701, second
Gas pipeline 702, second solenoid valve 703, igniting blower 704, high-tension transformer 705, combustion controller 8.
Specific embodiment
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, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
Embodiment
It is a kind of thermal desorption production line denitrating system provided in an embodiment of the present invention, institute as shown in Figure 1, Figure 2 referring to Fig. 1, Fig. 2
Show, which includes ultralow NOx type burner 1, and the ultralow NOx type burner 1 includes circulating flue gas entrance 101, combustion-supporting sky
Gas entrance 102 and gas inlet 103；
Circulating flue gas fills mechanism, and circulating flue gas filling mechanism includes flue gas blower 2, described 2 one end of flue gas blower and cigarette
Gas main pipe rail 3 is connected, and the other end is connected by pipeline with circulating flue gas entrance 101；
Combustion air fills mechanism, and combustion air filling mechanism includes combustion fan 4, and the combustion fan 4 passes through pipeline
It is connected with the combustion air inlet 102；
Natural gas fills mechanism, and natural gas filling mechanism passes through the first gas pipeline 5 and 103 phase of gas inlet
Even, the first solenoid valve 6 is provided on first gas pipeline 5；
Ignition mechanism, the ignition mechanism are used for the natural gas igniting at the gas inlet 103；
Combustion controller 8, the flue gas blower 2, combustion fan 4 and the first solenoid valve 6 are electric with the combustion controller 8 respectively
Connection.
Further, the ignition mechanism includes that igniter burner 701, ignited natural gas filling mechanism and igniting air add
Mechanism is infused, ignited natural gas filling mechanism is connected by the second gas pipeline 702 with the igniter burner 701, and described the
Second solenoid valve 703 is provided on two gas pipelines 702；Igniting air filling mechanism includes igniting blower 704, the point
Windburn machine 704 is connected by pipeline with the igniter burner 701；The second solenoid valve 703 and the igniting blower 704 divide
It is not connected with the combustion controller 8.The igniter burner includes the high-tension transformer 705 for generating electric spark.The point
Burning mouth includes flame controller, and the flame controller is used for monitors ignition situation, the combustion controller and the flame
Controller electrical connection；The combustion controller is used to control the folding shape of the second solenoid valve according to the ignition conditions monitored
State.
Oxygen content is 2.5-3.5% in the flue gas of circulating flue gas filling mechanism filling.The combustion air charging machine
Oxygen content is not less than 18% in the combustion air of structure filling.
System burner provided by the present application uses fractional combustion, is divided into igniting air, primary air and auxiliary air, drop
Low flame combustion temperature.
Flue gas blower and combustion fan can be filled flue gas and combustion gas in a manner of injection, will make combustion gas and air and cigarette
Gas quickly, uniformly mixes, and advantageously reduces NOx generation.
High speed ejection is caused inner flue gas of the stove to recycle by combustion gas and air, is reduced NOx and is generated.
The multi-feed mode of Gas Exploitation, avoids flame zone temperature excessively high, reduces NOx generation amount.
Igniter burner and plasma torch detection are set, the requirement of combustion completion is met.
System configuration flue gas recirculation blower fan mixes flue gas in original system smoke pipe and combustion air, reduces in combustion air
Oxygen concentration reduces NOx output.
By the application of the above measure, NOx content in rotary kiln flue gas is reduced to 90mg/Nm3 or less.
Burner shape meets installation requirement, can be fixed on vehicle frame and enter in kiln.
Flue will take flue gas from the smoke pipe of original system, for reducing combustion air oxygen content, and and combustion air
Enter burner after mixing and participates in burning.Necessary valve and detection device are equipped on air.
Burner is lighted a fire using special ignition burner, by high-tension transformer, generates electric spark, igniter burner is lighted,
Flame controller monitors ignition conditions simultaneously, if loss of ignition, the solenoid valve of gas header pipe is automatically closed.Transformation is used in igniting
Device, flame controller, main gas solenoid valve, igniting solenoid valve and igniting blower reuse.
Inserting-type flowmeter (debugging is interim to be used) is installed on main combustible pipe road, detects fuel gas conduit gas discharge, simultaneously
Gaseous-pressure before detection burner；Then the residual oxygen content for detecting combustion product gases is obtained by Control for Oxygen Content in flue gas 3% or so
To suitable air-fuel ratio, while air pressure before burner is detected, and detects air mass flow with inserting-type flowmeter.
In actual use, the pressure before burner is adjusted to suitable number can guarantee air-fuel ratio.
By the suction of blower, flue gas takes out from (smoke pipe near kiln) in smoke explorer, pacifies in smoke explorer
Adjustment tries out inserting-type flowmeter and detects flue gas flow to desired value, guarantees that burner combustion-supporting gas oxygen content is not less than 18%, together
When measurement burner before flue gas pressures.
In actual use, by the pressure of smoke pipe before burner be adjusted to suitable number can flue gas recirculation amount, the cigarette
Throughput.
In short, thermal desorption production line denitrating system provided by the present application, simple and reasonable, it is easy to install and use.Using
Ultralow NOx type burner replaces the burner of former rotary kiln, using injection mode, will make combustion gas and air and flue gas quickly,
Even mixing advantageously reduces NOx generation.High speed ejection is caused inner flue gas of the stove to recycle by combustion gas and air, is reduced NOx and is generated.
Flue gas recirculation blower fan mixes flue gas in original system smoke pipe and combustion air, reduces oxygen concentration in combustion air, and it is raw to reduce NOx
Yield.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (6)
1. a kind of thermal desorption production line denitrating system characterized by comprising
Ultralow NOx type burner, the ultralow NOx type burner include circulating flue gas entrance, combustion air inlet and natural
Gas entrance；
Circulating flue gas fills mechanism, and circulating flue gas filling mechanism includes flue gas blower, flue gas blower one end and flue gas
Main pipe rail is connected, and the other end is connected by pipeline with circulating flue gas entrance；
Combustion air fills mechanism, and combustion air filling mechanism includes combustion fan, the combustion fan by pipeline with
The combustion air inlet is connected；
Natural gas fills mechanism, and the natural gas filling mechanism is connected by the first gas pipeline with the gas inlet, institute
It states and is provided with the first solenoid valve on the first gas pipeline；
Ignition mechanism, the ignition mechanism are used for the natural gas igniting at the gas inlet；
Combustion controller, the flue gas blower, combustion fan and the first solenoid valve are electrically connected with the combustion controller respectively.
2. thermal desorption production line denitrating system according to claim 1, which is characterized in that the ignition mechanism includes igniting
Burner, ignited natural gas filling mechanism and igniting air fill mechanism, and the ignited natural gas filling mechanism passes through the second combustion
Feed channel is connected with the igniter burner, is provided with second solenoid valve on second gas pipeline；The igniting air filling
Mechanism includes igniting blower, and the igniting blower and pipeline is connected with the igniter burner；The second solenoid valve and institute
Igniting blower is stated to be connected with the combustion controller respectively.
3. thermal desorption production line denitrating system according to claim 2, which is characterized in that the igniter burner includes being used for
Generate the high-tension transformer of electric spark.
4. thermal desorption production line denitrating system according to claim 3, which is characterized in that the igniter burner includes flame
Controller, the flame controller are used for monitors ignition situation, and the combustion controller is electrically connected with the flame controller；Institute
Combustion controller is stated for controlling the folding condition of the second solenoid valve according to the ignition conditions that monitor.
5. thermal desorption production line denitrating system according to claim 1, which is characterized in that the circulating flue gas fills mechanism
Oxygen content is 2.5-3.5% in the flue gas of filling.
6. thermal desorption production line denitrating system according to claim 1, which is characterized in that the combustion air fills mechanism
Oxygen content is not less than 18% in the combustion air of filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629385.2A CN109539257A (en) | 2018-12-29 | 2018-12-29 | A kind of thermal desorption production line denitrating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629385.2A CN109539257A (en) | 2018-12-29 | 2018-12-29 | A kind of thermal desorption production line denitrating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109539257A true CN109539257A (en) | 2019-03-29 |
Family
ID=65830985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811629385.2A Pending CN109539257A (en) | 2018-12-29 | 2018-12-29 | A kind of thermal desorption production line denitrating system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080928A (en) * | 2011-02-14 | 2011-06-01 | 潜江方圆钛白有限公司 | Method and device for utilizing heat energy of flue gas produced by calcining in rotary kiln in process of producing titanium dioxide by sulfuric acid method |
| CN102853654A (en) * | 2012-10-22 | 2013-01-02 | 徐州燃控科技股份有限公司 | Air distribution process and air distribution system for rotary kiln |
| CN103672904A (en) * | 2013-12-19 | 2014-03-26 | 江阴江顺铝型材成套设备制造有限公司 | Gas line of combustor |
| CN106322368A (en) * | 2016-10-13 | 2017-01-11 | 王立臣 | Ultra-low nitrogen combustor and combustion method thereof |
| CN207527571U (en) * | 2017-11-21 | 2018-06-22 | 湖南安普诺环保科技有限公司 | A kind of natural gas boiler low nitrogen burning system |
| CN209639001U (en) * | 2018-12-29 | 2019-11-15 | 北京首华科技发展有限公司 | A kind of thermal desorption production line denitrating system |
-
2018
- 2018-12-29 CN CN201811629385.2A patent/CN109539257A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080928A (en) * | 2011-02-14 | 2011-06-01 | 潜江方圆钛白有限公司 | Method and device for utilizing heat energy of flue gas produced by calcining in rotary kiln in process of producing titanium dioxide by sulfuric acid method |
| CN102853654A (en) * | 2012-10-22 | 2013-01-02 | 徐州燃控科技股份有限公司 | Air distribution process and air distribution system for rotary kiln |
| CN103672904A (en) * | 2013-12-19 | 2014-03-26 | 江阴江顺铝型材成套设备制造有限公司 | Gas line of combustor |
| CN106322368A (en) * | 2016-10-13 | 2017-01-11 | 王立臣 | Ultra-low nitrogen combustor and combustion method thereof |
| CN207527571U (en) * | 2017-11-21 | 2018-06-22 | 湖南安普诺环保科技有限公司 | A kind of natural gas boiler low nitrogen burning system |
| CN209639001U (en) * | 2018-12-29 | 2019-11-15 | 北京首华科技发展有限公司 | A kind of thermal desorption production line denitrating system |
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