CN105842386B - Eliminate the two-phase seperation formula pilot system of coal contaminants discharge - Google Patents
Eliminate the two-phase seperation formula pilot system of coal contaminants discharge Download PDFInfo
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- CN105842386B CN105842386B CN201610378333.7A CN201610378333A CN105842386B CN 105842386 B CN105842386 B CN 105842386B CN 201610378333 A CN201610378333 A CN 201610378333A CN 105842386 B CN105842386 B CN 105842386B
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
Abstract
The present invention relates to the two-phase seperation formula pilot system for eliminating coal contaminants discharge.Reactor connection insertion body of heater of the present invention, in pyrolysis reactor insertion pyrolysis oven, furnace body support connection pyrolysis oven, distribution steel connection mass flowmenter, the mixed gas tank of connection, machine supplying powder is connected, connects pyrolysis oven, connects pyrolysis oven solid particle collection device, corrosion chamber is connected again, mouth connection filter after testing, connects flue gas analyzer, reconnects computer.Instant invention overcomes various defects existing for the experimental rigs such as Muffle furnace, one-dimensional horizontal pipe furnace, one-dimensional sedimentation furnace.The present invention explores the transformation mechanism of nitrogen and element sulphur in coal dust/burnt combustion process, is combined with the trial furnace of not same-action, analyze volatile matter/N by combining two reaction subsystems2/O2, volatile matter/CO2/O2Influence factor (temperature, coal, particle diameter, atmosphere etc.) in the experimentation such as burning, volatile matter/coal char combustion, volatile matter/coal dust, volatile matter/carbon dust, reduce pollutant emission.
Description
Technical field
In terms of the present invention relates to coal dust, biomass combustion experimental study, the two of coal contaminants discharge is more particularly to eliminated
Section separate type pilot system.
Background technology
A large amount of NOx, SOx and other dusty gas that coal discharges in combustion make environmental problem become increasingly to dash forward
Go out, coal combustion pollutant emission study hotspot is concentrated mainly in the migration mechanism of nitrogen and element sulphur, and experimental study can be given real
Border coal-burned industrial boiler reduces nitrogen, the discharge of sulphur provides Important Theoretic Foundation, therefore, for laboratory research combustion burning of coal examination
Check system, which seems, to be even more important.
Before the present invention makes, the experimental rig such as existing Muffle furnace, one-dimensional horizontal pipe furnace, one-dimensional sedimentation furnace is opened
Hair, can be that pyrolysis, the burning of laboratory research coal dust provide good test method, such pilot system pulverized coal pyrolysis with
Widely applied in combustion mechanism research, but its exclusive use is only capable of carrying out some pyrolysis or simple combustion experiment, very
The difficult alternative mechanism to volatile matter/coal tar in process of coal combustion is studied.Research meanses are carried out using these pilot systems
It is single, it is difficult to further investigate the transformation mechanism of some important elements (such as nitrogen and sulphur) in coal, especially some complicated transforming machines
The conversion of fuel bound nitrogen in such as coal is managed, including they are discharged into the homogeneous reaction occurred in flue gas and stay in coal tar table in gaseous form
Out-phase reaction that face occurs etc., it is difficult to obtain more comprehensive transformation mechanism in traditional experiment system and studies, the fuel in coal
The response situation of nitrogen and sulphur in flame mechanism is also difficult to explore.
The content of the invention
The purpose of the present invention, which is that, overcomes drawbacks described above, develops the two-phase seperation formula of studying coal-fired pollutant emission rule
Pilot system.
The technical scheme is that：
The two-phase seperation formula pilot system of coal contaminants discharge is eliminated, it is mainly characterized by the supervisor of reactor
Insert in body of heater, the support on supervisor is on body of heater, and in pyrolysis reactor insertion pyrolysis oven, its support is on pyrolysis oven, body of heater
Support connects pyrolysis oven, distribution steel connection mass flowmenter, the mixed gas tank of mass flowmenter connection, mixes gas tank connection machine supplying powder, gives
Powder machine connects pyrolysis oven, pyrolysis oven outlet pyrolysis oven solid particle collection device, then connects corrosion chamber, combustion test
Mouth connection filter, filter connection flue gas analyzer, flue gas analyzer connect computer to device after testing.
The corrosion chamber connects combustion furnace solid particle collection device.
The combustion furnace solid particle collection device connects flue gas processing device.
Advantages of the present invention and effect in can pollutant emission characteristic effectively in Study on Coal, promote fire coal energy-saving emission-reducing
Research, by combining two reaction subsystems, machine can be interacted between volatile matter and coal dust/Jiao in studying coal powder combustion process
Reason, so as to further investigate the transformation mechanism of nitrogen and element sulphur in coal dust/burnt combustion process, to develop new low NOx, SOx burning
Technology provides theoretical foundation.Its technological break-through is the trial furnace for being preferably combined with not same-action, the pyrolysis of coal dust, burning with
And the burning of volatile matter and coal tar can independently be carried out in the system of the present invention, can be separated with volatile matter/coal tar again after simultaneously
Interact, furthermore reactor manifold carries stream quartz glass tube, can study along the flame mechanism in supervisor direction
Coal dust/Jiao etc. along journey characteristic.The present invention carries out experimental study, is converted with obtaining important element in more deep and comprehensive coal
Mechanism, analyze volatile matter/N2/O2, volatile matter/CO2/O2Burning, volatile matter/coal char combustion, volatile matter/coal dust, volatile matter/carbon
Influence factor (temperature, coal, particle diameter, atmosphere etc.) in the experimentations such as powder, inquires into which kind of factor can influence experimentation
Middle NOx, SOx discharge, and its transformation mechanism is analyzed, explore the influence factor of NOx, SOx minimum emissions, and actual coal-fired work
Industry application compares, and reduces the pollutant emission in the case of practical application in industry.
Other specific effects of the present invention will be gone on to say below.
Brief description of the drawings
Fig. 1 --- corrosion chamber schematic diagram of the present invention.
Fig. 2 --- tubular type pyrolysis oven structural representation of the present invention.
Fig. 3 --- principle schematic diagram of the present invention.
Component names corresponding to each label expression are as follows：
Reactor 1, body of heater 2, pyrolysis reactor 3, tubular type pyrolysis oven 4, furnace body support 5, with gas cylinder 6, quality stream measuring device
7th, gas tank 8, machine supplying powder 9, pyrolysis oven 10, pyrolysis oven solid particle collection device 11, microdose heparin machine 12, corrosion chamber are mixed
13rd, filter 14, flue gas analyzer 15, computer 16, combustion furnace solid particle collection device 17, flue gas processing device 18.
Briefly explain each critical piece：
(manifold carries stream quartz glass tube) reactor 1, is 30~100mm supervisor and 4~10 by an internal diameter
The internal diameter for being axially distributed and communicating therewith along supervisor~8mm branch pipes composition.Upper end is responsible for be provided with for fixed support.Supervisor makees
For combustion reaction space, branch pipe is as detection mouth or air inlet, each detection mouth spacing a certain distance (100~350mm), instead
Answer device constant temperature zone overall length ＞ 1500mm.The design of the reactor uses quartz glass material, is resistant to 1400K high temperature above.Reaction
The easy dust stratification of inwall in device, branch pipe and supervisor connection are that 15mm connects tube transitions using internal diameter, to prevent coal/ash etc. from blocking
Branch pipe, while also allow for cleaning junction.A series of this axially aligned branch pipe can use as Secondary Air air distribution outlet, again
It can detect aflame along journey flue gas characteristic.
Body of heater 2 belongs to openable electric furnace body, is designed using the hemihedrism dissection type of left and right two, the heating unit of two halves body of heater
Part is separate, and body of heater 2 can be opened easily to load and unload combustion reactor, and it is scattered to reduce that flame-proof thermal insulation material is laid in opening and closing place
Heat.Body of heater 2 is divided into the independent temperature control heating section in upper, middle and lower three on the whole, constant temperature zone ＞ 1500mm, reactant can be allowed to exist
Stay longer in body of heater 2, reaction are abundant.Heating element heater can use Elema or resistance to hot water radiation wire, maximum temperature in body of heater 2
＞ 1573K.
Pyrolysis reactor 3, using quartz glass material, it is installed in pyrolysis oven, quartz glass tube top, which is provided with, to be used for admittedly
Fixed support.
Pyrolysis oven 4, using unitary design, overall length 1200mm, maximum temperature can ＜ 1400K.
Furnace body support 5, the support support whole body of heater by the support shaft in the middle part of body of heater, and support shaft has and can fasten/put
The king-bolt of pine, body of heater can surround support axis rotation, the angle of inclination for allowing body of heater be horizontal, vertical or require.
After two main experiment subsystems design, effective connection is very important.Fig. 3 is the burning examination of two-phase seperation formula
Check system figure, now each device connection composition and purposes are made as described below：
With gas cylinder 6, for the storage of experiment high-purity gas and to gas, equipped with safety-valve.
Quality stream measuring device 7, for measuring and controlling to tolerance, because experiment condition distribution required precision is high, height need to be used
The mass flowmenter of precision.
Mixed gas tank 8, is sufficiently mixed the gas of a variety of distributions, even into reactor.
Machine supplying powder 9, type micro fine powder machine supplying powder is also known as submerged, it is lasting, steady to powder for experiment sample microdose heparin
Fixed, accuracy height, powder-feeding amount meet requirement of experiment.
Pyrolysis oven 10, it, which is designed, refers to that above, for pulverized coal pyrolysis, coal tar and pyrolysis gas can be made.
Pyrolysis oven solid particle collection device 11, the cylinder being fabricated to using high-quality stainless steel material, for solid after pyrolysis
The collection of residue such as coal ash, coal tar.
Microdose heparin machine 12, for experiment sample microdose heparin, to powder it is lasting, stably, accuracy it is high, powder-feeding amount meets
Requirement of experiment.
Corrosion chamber 13, i.e., vertical to open carrying stream corrosion chamber, it, which is designed, refers to above, for coal
The combustion experiment of powder/Jiao, provided with 4~10 detection mouths, for detecting the flue gas characteristic in coal dust/burnt flame mechanism.
Filter 14, for filtering the dust and steam of the carrying in flue gas, prevent pollution, jam detection instrument.
Flue gas analyzer 15, detect the gas componant and content of extraction, and data storage.
Computer 16, arranges the data of flue gas analyzer storage, and carries out data analysis.
Combustion furnace solid particle collection device 17, the cylinder being fabricated to using high-quality stainless steel material, for solid after burning
The collection of residue such as coal ash, coal tar.
Flue gas processing device 18, for filtering the dust carried in flue gas and absorbing poisonous and hazardous tail gas, to prevent dirt
Contaminate environment.
Embodiment
The present invention technical thought be：
It is contemplated that traditional tubular type combustion test system is broken through, by combining two kinds of combustion test systems and improvement
Combustion reactor, decoupling/coupling combustion that can be to volatile matter and coal tar contrast, and disclose nitrogen and sulphur in coal dust/burnt combustion process
Homogeneous/heterogeneous conversion process of element and emission equivalent, it is intended to solve important element transforming machine in traditional combustion pilot system coal
The limitation of research is managed, develops new combustion test system, is converted with obtaining important element in more deep and comprehensive coal
Mechanism, reduce the disposals of pollutants such as nitrogen, sulphur for actual coal-burning boiler and most important theories and foundation are provided.
The present invention is specifically described below.
：
The composition explanation of two sections of two-phase seperation formula pilot system of the present invention, first paragraph pilot system are configured to match somebody with somebody gas cylinder 6,
Quality stream measuring device 7, mix gas tank 8, machine supplying powder 9, pyrolysis oven 10, pyrolysis oven solid particle collection device 11, combustion furnace solid particle receipts
Storage 17, flue gas processing device 18, filter 14, flue gas analyzer 15, computer 16.Second segment pilot system is configured to distribution
Steel cylinder 6, quality stream measuring device 7, mixed gas tank 8, microdose heparin machine 12, corrosion chamber 13, combustion furnace solid particle collection device 17,
Flue gas processing device 18, filter 14, flue gas analyzer 15, computer 16.
The present invention is mainly made up of two experiment subsystems and improved combustion reactor.Wherein, vertical open is taken
Band stream combustion test subsystem mainly carries stream quartz glass tube reactor 1 by openable electric furnace body 2 and manifold and formed,
Body of heater 2 can conveniently change reactor 1, while bringing-up section and soaking zone are longer, and heating and thermal insulation performance is good, it is possible to provide foot
The enough reaction time.Reactor 1 is designed as manifold and carries stream quartz glass tube reactor, quartz glass material resistance to elevated temperatures
It is good, easy processing, and there is good reactionlessness, do not reacted with coal dust and its product.The reactor is by an internal diameter
Supervisor and 4~10 branch pipe compositions for being axially distributed and communicating therewith along supervisor for 30~100mm, can detect coal dust firing
Flue gas in process is along journey emission performance.Another experiment subsystem is pyrolysis oven 10, the furnace body support 5 in body of heater medium design,
It can allow the horizontal or vertical fixation of body of heater, static and dynamic coal dust pyrolysis situation can be simulated；In body of heater vertical state, Ke Yifang
Just coal tar and pyrolysis gas are produced with rapid, high volume.The pyrolysis reactor 3 of the body of heater uses quartz glass material.By pyrolysis reactor
3 lower part outlets are connected with the upper entrance of reactor 1, and the pulverized coal pyrolysis gas (volatile matter of coal) for making to produce in pyrolysis oven 10 leads to
Enter in reactor 1, by the configuration in the sample of reactor 1 and atmosphere, volatile matter and different atmosphere and solid constituent can be achieved
Decoupling/coupling combustion, such as pure volatile combustion, volatile matter/N2/O2, volatile matter/CO2/O2Burning, volatile matter/coal char combustion,
The experimentations such as volatile matter/coal dust, volatile matter/carbon dust, it can effectively explore the discharge rule of coal dust/burnt burning and exhausting nitrogen and element sulphur
Rule, it can especially protrude the reciprocation between homogeneous-out-phase reaction.
In the supervisor's insertion body of heater 2 of reactor 1, its support being responsible for is positioned over the upper end of body of heater 2.Pyrolysis reactor 3 inserts
In pyrolysis oven 4, its support is positioned over the upper end of pyrolysis oven 4.The upper end of furnace body support 5 connects with the middle part of pyrolysis oven 4 with fixing bolt.Match somebody with somebody
The upper end of gas cylinder 6 and the lower end of mass flowmenter 7, the upper end of mass flowmenter 7 are connected with the mixed lower end of device tank 8 with metal tube.It is mixed
The upper end of device tank 8 is connected with powder mouth upper end under machine supplying powder with rubber tube, and mixing gas tank 8 in addition has a by-pass line to connect with the powder cabin of machine supplying powder 9
Connect to balance air pressure in the storehouse of machine supplying powder 9, reactor upper end uses rubber tube in the lower tube cell lower end of machine supplying powder 9 and pyrolysis oven 10
Connection, the lower end of pyrolysis oven 10 outlet connected with the upper end of pyrolysis oven solid particle collection device 11, and with 12 times powder mouths of microdose heparin machine
It is connected with the reactor intermediate connections of corrosion chamber 13 using rubber tube.The lower end of corrosion chamber 13 and combustion furnace solid
The upper end of particle collector 17 connects, and 17 left sides connect with the upper end of flue gas processing device 18.The right side of corrosion chamber 13 is provided with number
Individual detection mouth, detection mouth are connected with the upper end of filter 14, and detection mouth 14 is connected with the flue gas analyzer 15 on right side using rubber tube,
Flue gas analyzer 15 is connected with computer 16 by data wire.The position relationship of each structure is as shown in Figure 3.
Application process explanation of the present invention：
Specific experiment process is to use the process class exemplified by coal tar, tested using unclassified stores in combustion reactor
Seemingly.After the combustion test system building is good, system testing is first carried out, detecting system air-tightness, with gas cylinder 6, mass flowmenter
7th, the main device such as machine supplying powder 9, pyrolysis oven 10, corrosion chamber 13, flue gas analyzer 15 whether normal use.Make experiment
With coal tar, the pyrolysis furnace system 10 that can be used alone makes burnt sample, demarcates machine supplying powder 9, using high pure nitrogen operating mode to gas, reach pre-
After fixed char-making temperature, making needs the coal tar of dosage to be used for microdose heparin machine 12, and demarcates good to be used.Combustion test is filled
Put 13 and be heated to operating condition design temperature, open pyrolysis furnace system 10, be pyrolyzed volatile matter gas caused by coal tar and be passed through burning
Experimental rig 13, microdose heparin machine 12 is opened, allow volatile matter in corrosion chamber 13 and coal tar carries out combustion reaction.Open
Flue gas analyzer 15, detection mouth is extracted out from corrosion chamber 13 smoke components and its content are detected successively.Utilize calculating
Machine 16 obtains data, and carries out data processing and analysis.
Will in invention two experiment subsystems according to specific experiment need it is combined use simultaneously, also can be used alone.This
Outside, the various operating modes such as the operating mode of designed, designed difference distribution, examination temperature, coal, particle diameter, atmosphere, can more diversified exploration coal
The characteristic of burning and exhausting pollutant.
Claims (1)
1. eliminate the two-phase seperation formula pilot system of coal contaminants discharge, it is characterised in that the supervisor of reactor inserts body of heater
In, the support on supervisor is on body of heater, and in pyrolysis reactor inserting pipe-type pyrolysis oven, its support is on pyrolysis oven, furnace body support
Tubular type pyrolysis oven is connected, distribution steel connection mass flowmenter, the mixed gas tank of mass flowmenter connection, gas tank connection machine supplying powder is mixed, gives
Powder machine connects pyrolysis oven, pyrolysis oven outlet pyrolysis oven solid particle collection device, then connects corrosion chamber, combustion test
Mouth connection filter, filter connection flue gas analyzer, flue gas analyzer connect computer, the combustion test to device after testing
Device connects combustion furnace solid particle collection device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106554788A (en) * | 2016-11-28 | 2017-04-05 | 新奥泛能网络科技股份有限公司 | A kind of coal tar preparation system and coal tar preparation method |
| CN107202331B (en) * | 2017-07-14 | 2023-10-03 | 中国环境科学研究院 | Pollutant gas-phase combustion temperature control device |
| CN109030707A (en) * | 2018-07-13 | 2018-12-18 | 哈尔滨锅炉厂有限责任公司 | Micro coal dust firing volatile matter release and nitrogen distribution character controllable high-temperature reaction system |
| CN114689789B (en) * | 2022-04-11 | 2023-08-15 | 国网浙江省电力有限公司电力科学研究院 | Flexibility reforms transform unit oxygen boosting burning and hydrogen energy storage safety utilization experimental system |
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