CN108226670A - A kind of method using each electric field trapping coal/biomass multifuel combustion ash of carbon isotope instruction electric precipitator - Google Patents
A kind of method using each electric field trapping coal/biomass multifuel combustion ash of carbon isotope instruction electric precipitator Download PDFInfo
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- CN108226670A CN108226670A CN201711303026.3A CN201711303026A CN108226670A CN 108226670 A CN108226670 A CN 108226670A CN 201711303026 A CN201711303026 A CN 201711303026A CN 108226670 A CN108226670 A CN 108226670A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
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Abstract
The invention belongs to safety and clean energy resource to utilize field, and in particular to a kind of method using each electric field trapping coal/biomass multifuel combustion ash of carbon isotope instruction electric precipitator.Naturally radioactive carbon isotope14C is measured using accelerator mass spectrometry (AMS) in coal/biomass multifuel combustion ash as biological source tracer14C, can be as difference biomass ash and the characteristic indication object of coal ash.Therefore it for coal/biomass mixed with power generation system, is measured using carbon isotope technique14C and12The ratio of C indicates each electric field of electric precipitator respectively to the arresting efficiency of coal ash, biomass ash in multifuel combustion ash.The present invention has good directive function for popularization and application of the electric precipitator in biomass/coal multifuel combustion utilizes.
Description
Technical field
The invention belongs to safety and clean energy resource to utilize field, and in particular to a kind of to be removed using carbon isotope technique research electricity
The method of coal/biomass multifuel combustion ash arresting efficiency in dirt device electric field.
Background technology
Carbon in nature there is12C,13C,14Tri- kinds of isotopes of C.Wherein12C、13C is stable nuclide,14C has radiation
Property.Wherein14The source of C is14N is generated under the action of cosmic radiation by capturing neutron and release proton14C,14C is
Half-life period is the radioactivity β nucleic of 5730.Tellurian plant and animal absorbs in growth course14C so that fresh
Contain in animals and plants body14The isotope of C.And be imbedded in after animals and plants death in stratum, photosynthesis and metabolism stop,
In its body14C can pass through β decays and be gradually converted into14N, by very long geologic change,14Gradually decay causes C isotopes
It is almost equal to zero.Therefore, it is theoretically free from these fossil fuels such as ancient coal, oil, natural gas14C isotopes or
Person is that this content is negligible compared with fresh bio.Therefore, we can utilize14C、12C respectively as biomass and
The indicator of coal.
In China, coal/biomass mixed with power generation is a kind of more novel generation mode, generally mixes burning rate (based on calorific value
Calculate) 20% hereinafter, multifuel combustion can not directly be carried out by the way that boiler and its auxiliary device is transformed.Therefore, for generally using
The station boiler of electric precipitator uses coal/biomass fuel combination instead, will can face grey efficient removal problem after multifuel combustion.Biology
Matter and coal are in the physicochemical characteristic of raw material, combustion process and into all there is difference, coal to be mixed into stove with biomass in grey mechanism
Thorax, after the course that experienced identical ignition temperature-burning time, multifuel combustion ash, can be in physical property compared with burned-coal fly ash
Feature, chemical composition, morphosis etc. show difference, cause the coal ash and biomass ash in multifuel combustion ash to be in the electric field
Existing different characteristic, so as to influence particle stressing conditions in the electric field and to pole plate drive into behavior so that each electric field is to coal
The trapping ability of ash and biomass ash shows difference.The present invention provides coal/biomass multifuel combustion ash using carbon isotope technique
The method of the arresting efficiency research of middle biomass ash, coal ash in each electric field of electric precipitator, for electric precipitator be applied to coal/
Beneficial help is provided in the transformation boiler of biomass multifuel combustion.
Invention content
1. a kind of method using each electric field trapping coal/biomass multifuel combustion ash of carbon isotope instruction electric precipitator, feature
It is, including the following contents：The carbon isotope in coal/biomass multifuel combustion ash is detected using accelerator mass spectrometry (AMS), according to obtaining
14C/12C, the mass content and trapping for calculating biomass ash and coal ash in the multifuel combustion ash of each electric field trapping in electric precipitator are imitated
Rate.
2. a kind of each electric field trapping coal/biomass of utilization carbon isotope instruction electric precipitator according to claim 1
The method of multifuel combustion ash, which is characterized in that the multifuel combustion ash sample of each electric field trapping pre-processes to electric precipitator, using Zn-Fe
Method synthetic graphite measures contemporary carbon ratio (PMC) in multifuel combustion ash sample using AMS, according to14The mass conservation law of C is established public
The mass content of coal ash, biomass ash respectively in each electric field multifuel combustion ash of electric precipitator is calculated and determined in formula.
3. a kind of each electric field trapping coal/biomass of utilization carbon isotope instruction electric precipitator according to claim 1
The method of multifuel combustion ash, which is characterized in that the acquisition electric precipitator not multifuel combustion ash sample in same electric field detects carbon isotope by AMS,
It obtains14C/12The ratio of C calculates the same electric fields on biological matter ash of electric precipitator, coal ash respectively in conjunction with efficiency of dust collection formula
Classification arresting efficiency.
4. a kind of each electric field trapping coal/biomass of utilization carbon isotope instruction electric precipitator according to claim 1
The method of multifuel combustion ash, which is characterized in that the acquisition electric precipitator not multifuel combustion ash sample in same electric field detects carbon isotope by AMS,
It obtains14C/12The ratio of C calculates electric precipitator in conjunction with efficiency of dust collection formula and the trapping of biomass ash, coal ash is imitated respectively
Rate.
Advantageous effect：
The present invention has following innovative point and advantage：
1. using coal/biomass multifuel combustion ash sample in carbon isotope detection technique analysis Electric Field in ESP, according to acquisition14C/12C calculates each electric field of electric precipitator to the arresting efficiency of biomass ash and coal ash in multifuel combustion ash.
2. the popularization and application for coal/biomass mixing power generation technology provide beneficial help.
Description of the drawings
Fig. 1 is that carbon isotope indicates that each electric field of electric precipitator traps the method schematic of coal/biomass multifuel combustion ash.In figure,
1- air pumps；2- gives powder device；3- high voltage power supplies；4- corona wires；5- insulation boards；6- is grounded.
Specific implementation process：
1. fire coal/biomass multifuel combustion ash in different multifuel combustion ratios；
2. at ambient temperature, the multifuel combustion ash fired and sieved is sent into in powder device, adjust high-voltage DC power supply to
20kV or so (being more than discharge inception voltage, less than breakdown voltage), opens air pump and opens and give powder device, the flow control of ash sample exists
Between 0.8m/s~1.5m/s, particulate matter after being mixed with air under certain wind speed, into use for laboratory electric dust removal system
In；
After 3. multifuel combustion ash is waited for all to be trapped by Electric Field in ESP, air pump and power supply are closed.It is each from electric precipitator successively
The ash being captured is collected on electric field dust collector pole and is sealed；
4. choosing representative multifuel combustion ash ash sample, sample is pre-processed, using Zn-Fe method synthetic graphites；
5. using the ratio that mass spectrograph AMS is accelerated to measure carbon isotope in graphite, modern times carbon content PMC is determined, analysis is simultaneously
Calculate the classification arresting efficiency and gross efficiency of each electric fields on biological matter ash of electric precipitator, coal ash.
Claims (4)
- A kind of 1. method using each electric field trapping coal/biomass multifuel combustion ash of carbon isotope instruction electric precipitator, which is characterized in that Including the following contents：The carbon isotope in coal/biomass multifuel combustion ash is detected using accelerator mass spectrometry (AMS), according to acquisition14C /12C calculates the mass content and arresting efficiency of biomass ash and coal ash in the multifuel combustion ash that each electric field traps in electric precipitator.
- 2. a kind of each electric field trapping coal/biomass multifuel combustion of utilization carbon isotope instruction electric precipitator according to claim 1 The method of ash, which is characterized in that the multifuel combustion ash sample of each electric field trapping pre-processes to electric precipitator, is closed using Zn-Fe methods Into graphite, contemporary carbon ratio (PMC) in multifuel combustion ash sample is measured using AMS, according to14The mass conservation law of C establishes formula meter It calculates and determines coal ash, the biomass ash mass content in each electric field multifuel combustion ash of electric precipitator respectively.
- 3. a kind of each electric field trapping coal/biomass multifuel combustion of utilization carbon isotope instruction electric precipitator according to claim 1 The method of ash, which is characterized in that the acquisition electric precipitator not multifuel combustion ash sample in same electric field detects carbon isotope by AMS, obtains 14C/12It is grey, coal ash to calculate the same electric fields on biological matter of electric precipitator respectively in conjunction with efficiency of dust collection formula for the ratio of C It is classified arresting efficiency.
- 4. a kind of each electric field trapping coal/biomass multifuel combustion of utilization carbon isotope instruction electric precipitator according to claim 1 The method of ash, which is characterized in that the acquisition electric precipitator not multifuel combustion ash sample in same electric field detects carbon isotope by AMS, obtains 14C/12The ratio of C calculates arresting efficiency of the electric precipitator to biomass ash, coal ash respectively in conjunction with efficiency of dust collection formula.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711303026.3A CN108226670A (en) | 2017-12-04 | 2017-12-04 | A kind of method using each electric field trapping coal/biomass multifuel combustion ash of carbon isotope instruction electric precipitator |
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| CN201711303026.3A CN108226670A (en) | 2017-12-04 | 2017-12-04 | A kind of method using each electric field trapping coal/biomass multifuel combustion ash of carbon isotope instruction electric precipitator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132095A (en) * | 2017-06-20 | 2017-09-05 | 苏州热工研究院有限公司 | A kind of source system processed measured for carbon 14 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706479A (en) * | 2013-12-26 | 2014-04-09 | 中冶长天国际工程有限责任公司 | Discharging control method and system for nose electrical precipitator for reducing air leakage rate of sintering system |
| CN107219325A (en) * | 2017-04-28 | 2017-09-29 | 华电电力科学研究院 | A kind of boiler uses the test method of discrimination of high sodium coal and its mixed coal contamination |
-
2017
- 2017-12-04 CN CN201711303026.3A patent/CN108226670A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103706479A (en) * | 2013-12-26 | 2014-04-09 | 中冶长天国际工程有限责任公司 | Discharging control method and system for nose electrical precipitator for reducing air leakage rate of sintering system |
| CN107219325A (en) * | 2017-04-28 | 2017-09-29 | 华电电力科学研究院 | A kind of boiler uses the test method of discrimination of high sodium coal and its mixed coal contamination |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132095A (en) * | 2017-06-20 | 2017-09-05 | 苏州热工研究院有限公司 | A kind of source system processed measured for carbon 14 |
| CN107132095B (en) * | 2017-06-20 | 2020-03-06 | 苏州热工研究院有限公司 | Source manufacturing system for carbon-14 measurement |
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Application publication date: 20180629 |