CN110186725A - A kind of system and method collecting and surveying flue gas and fly ash granule in high-temperature burner hearth - Google Patents
A kind of system and method collecting and surveying flue gas and fly ash granule in high-temperature burner hearth Download PDFInfo
- Publication number
- CN110186725A CN110186725A CN201910448671.7A CN201910448671A CN110186725A CN 110186725 A CN110186725 A CN 110186725A CN 201910448671 A CN201910448671 A CN 201910448671A CN 110186725 A CN110186725 A CN 110186725A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- fly ash
- burner hearth
- cooling water
- sampling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2211—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with cyclones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
Abstract
The invention belongs to boiler technology fields, in particular to a kind of system and method that flue gas and fly ash granule are collected and surveyed in high-temperature burner hearth, in boiler running process, after extracting the flue gas containing fly ash granule out of high-temperature burner hearth using sampling gun, fly ash granule is separated with flue gas by gas solid separation system, the flue gas after separation is analyzed by flue gas analysis system then, is measured；This method can realize flue gas and fly ash granule while sample, and avoid separately sampled introduced error, and accuracy is high；And this method can be realized strong to the real-time analysis of smoke components and measurement, timeliness.
Description
Technical field
The invention belongs to boiler technology field, in particular to one kind collects and surveys flue gas and fly ash granule in high-temperature burner hearth
System and method.
Background technique
With the proposition that China's minimum discharge requires, country attaches great importance to the discharge of coal-burning power plant NOx, de- for boiler
For nitre, NOx source concentration of emission test particularly significant, is conducive to be adjusted the combustion state of boiler, and then subtract
Few NOx source discharge.Meanwhile facilitating the distribution shape of fly ash granule in understanding burner hearth to Fly ash sampling is carried out along burner hearth different depth
State, meanwhile, each factor can be better understood to NOx source discharge by being sampled to fly ash granule herein and doing analysis test
Influence, to optimize adjustment to the operating status of boiler.And flue gas and solid particle are taken at high operating temperatures
Sample test is a very difficult job, the danger that prevent sampling gun from deforming, rupturing at high operating temperatures, for
This, transform sampling gun as water cooling sampling gun herein, can satisfy job requirement at high operating temperatures.And to total system into
Row transformation realizes flue gas, fly ash granule sampling with flue gas composition and detects the function of carrying out simultaneously.
Summary of the invention
The present invention solves the above-mentioned technical problems in the prior art, provide one kind in high-temperature burner hearth collect flue gas and
The system of fly ash granule.
To solve the above problems, technical scheme is as follows:
The system that the invention discloses a kind of to collect and survey flue gas and fly ash granule in high-temperature burner hearth, including sampling gun, gas-solid
Separation system, flue gas analysis system；The gas solid separation system includes Whirlwind cyclone, deduster and filter cylinder, the flue gas analysis system
System includes flowmeter, thermometer, flue gas analyzer, shut-off valve, regulating valve 1, regulating valve 2, vacuum pump；The sampling gun passes through soft
Pipe connects Whirlwind cyclone, and the Whirlwind cyclone connects filter cylinder, and the filter cylinder connects flowmeter, and the flowmeter connects vacuum pump, described
Vacuum pump connects flue gas analyzer, shut-off valve is equipped between the flowmeter and vacuum pump, between the shut-off valve and vacuum pump
Equipped with regulating valve 1, it is equipped with regulating valve 2 between the vacuum pump and flue gas analyzer, is also set between the flowmeter and shut-off valve
There is thermometer；One end of the Whirlwind cyclone connects deduster.
Further, the sampling gun includes shell, sampling entrance, cooling water inlet, cooling water outlet, the sampling gun
Shell one end be equipped with sampling entrance, it is described sampling gun housing body the other end be equipped with cooling water inlet, cooling water outlet, it is described cold
But water inlet is located at the lower section of cooling water outlet.
Collect in high-temperature burner hearth using above-mentioned system, analyze flue gas and fly ash granule, discloses one kind in high temperature
The method of flue gas and fly ash granule is collected and surveyed in burner hearth, comprising the following steps:
S1, sampling cooling
In boiler combustion process, the sampling entrance of sampling gun is placed in high-temperature burner hearth, it will by the swabbing action of vacuum pump
Sampling sample is extracted out out of high-temperature burner hearth；The cooling of sampling gun inner wall uses water-cooling pattern；The sampling sample is inside burner hearth
Flue gas comprising fly ash granule；
S2, gas solid separation
The subsequent sampling sample enters gas solid separation system, and separates by the thickness that Whirlwind cyclone carries out fly ash granule, then
Gas solid separation is carried out by filter cylinder；
S3, flue gas analysis
The flue gas for having been separated fly ash granule subsequently enters flue gas analysis system, and by flowmeter, thermometer and flue gas analysis
Instrument etc. is made a concrete analysis of and is measured to flue gas flow, temperature and constituent；
Preferably, in the step 1, the sampling gun uses 2520 steel of refractory material；The sampling gun is cooling using normal-temperature water,
23-25 DEG C of water temperature, water speed is determined as the case may be.
Preferably, in the step 1, the cooling water enters from cooling water inlet, flows out from cooling water outlet；It is described cold
But water inlet is located at the lower section of cooling water outlet, to guarantee cooling water full of sampling gun cooling chamber.
Preferably, in the step 2, the gas solid separation system includes Whirlwind cyclone, deduster and filter cylinder；Sampling gun passes through
Hose connects Whirlwind cyclone, and Whirlwind cyclone one end connects filter cylinder, and the other end of Whirlwind cyclone connects deduster.By gravity in Whirlwind cyclone
The thickness for carrying out fly ash granule with centrifugal force separates, and carries out gas solid separation by strainer in filtration cartridges, and the effect of deduster is to receive
Collect coarse granule, filter cylinder has both filtering and collects fine grain effect.
Preferably, in the step 3, the flue gas analysis system includes flowmeter, thermometer, flue gas analyzer, cut-off
Valve, regulating valve and vacuum pump, flowmeter and thermometer can measure the flow and temperature of flue gas, and flue gas analyzer can analyze flue gas group
Point, regulating valve can guarantee that the safe and highly efficient operation of whole system, vacuum pump provide the draft of whole system.
Preferably, in the step 3, vacuum pump is located at before flue gas analyzer, when the draft of vacuum pump can be prevented excessive
Flue gas is directly via vacuum pump emptying and without flue gas analyzer.
Compared with the existing technology, advantages of the present invention is as follows,
(1) this system can be realized and to flue gas and fly ash granule while be sampled at high operating temperatures, and can detect flue gas composition immediately.
(2) this system uses water cooling sampling gun, can be sampled at high operating temperatures to flue gas and fly ash granule.
(3) this system separates into can calculate taken fly ash granule quality fly ash granule by gas solid separation system,
And gas analysis system can recorde taken flue gas flow, can be counted to flue gas concentration of solid particles by this two groups of data
It calculates.
(4) by installing regulating valve additional after vacuum pump, the adjustable gas flow into flue gas analyzer guarantees in cigarette
The suitable operating status of gas analyzer carries out, to realize the function of on-line checking gas component.
Detailed description of the invention
Fig. 1 is the system diagram of the invention that flue gas and fly ash granule are collected in high-temperature burner hearth；
Fig. 2 is the partial enlarged view of sampling gun of the invention；
Wherein, 1, sampling gun, 2, hose, 3, Whirlwind cyclone, 4, deduster, 5, filter cylinder, 6, suspended body flowmeter, 7, thermometer, 8, cut
Only valve, 9, regulating valve 1,10, vacuum pump, 11, regulating valve 2,12, flue gas analyzer, 13, sampling entrance；14, cooling water inlet；
15, cooling water outlet.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention.
Embodiment 1
As shown in Figure 1 and Figure 2, the system that the invention discloses a kind of collects and surveys flue gas and fly ash granule in high-temperature burner hearth, packet
Include sampling gun 1, gas solid separation system, flue gas analysis system；Gas solid separation system includes Whirlwind cyclone 2, deduster 4 and filter cylinder 5, cigarette
Gas analysis system include suspended body flowmeter 6, thermometer 7, flue gas analyzer 12, shut-off valve 8, regulating valve 19, regulating valve 2 11,
Vacuum pump 10；Sampling gun connects Whirlwind cyclone by hose 2, and Whirlwind cyclone connects filter cylinder, and filter cylinder connects flowmeter, and flowmeter connection is true
Sky pump, vacuum pump connect flue gas analyzer, and shut-off valve is equipped between flowmeter and vacuum pump, is equipped between shut-off valve and vacuum pump
Regulating valve 1 is equipped with regulating valve 2, thermometer is additionally provided between flowmeter and shut-off valve between vacuum pump and flue gas analyzer；Whirlwind
One end of son connects deduster.
In the present embodiment, sampling gun includes shell, sampling entrance, cooling water inlet, cooling water outlet, the shell of sampling gun
Body one end is equipped with sampling entrance, and the other end for sampling gun housing body is equipped with cooling water inlet, cooling water outlet, and cooling water inlet is located at
The lower section of cooling water outlet.
Embodiment 2:
Case study on implementation of the present invention provides a kind of method that flue gas and fly ash granule are collected and surveyed in high-temperature burner hearth, using implementation
Flue gas is collected in the high-temperature burner hearth of example 1 and the system of fly ash granule is collected, and is included the following steps:
S1, sampling cooling
As shown in Figure 1, in boiler combustion process, sampling gun 1(sampling gun is made of 2520 steel of refractory material) sampling
Entrance 13 is placed in high-temperature burner hearth, and the sampling gun is cooled down using cooling water, and cooling water temperature is 23-25 DEG C, this implementation
Water velocity is 2-3 m/s in example.Cooling water enters from cooling water inlet 14, flows out from cooling water outlet 15, cooling water inlet
Positioned at the lower section of cooling water outlet, to guarantee that cooling water is full of sampling gun cooling chamber, as shown in Figure 2；Further, by vacuum
Flue gas comprising fly ash granule is taken out and is cooled down from high-temperature burner hearth by the swabbing action of pump 10.
S2, gas solid separation
As shown in Figure 1, sampling sample subsequently enters gas solid separation system, the thickness point including carrying out fly ash granule by Whirlwind cyclone
From be then act through filter cylinder carry out gas solid separation, gas solid separation system includes Whirlwind cyclone, deduster and filter cylinder；Sampling gun passes through soft
Pipe connects Whirlwind cyclone, and Whirlwind cyclone one end connects filter cylinder, and the other end of Whirlwind cyclone connects deduster.Sampling sample subsequently enters whirlwind
Son 3, under the action of gravity and centrifugal force, the coarse granule in flue gas can settle down, into collecting in deduster；Hose 2
Effect is that the position of each instrument is facilitated to put and move；Further, it carries fine grain flue gas to enter in filter cylinder 5, filter cylinder can
Fine grained in filtering flue gas is to achieve the purpose that gas solid separation, and filter cylinder has both and collects fine grain effect.
S3, flue gas analysis
As shown in Figure 1, the flue gas by gas solid separation enters flue gas analysis system, i.e., sequence passes through suspended body flowmeter 6, thermometer
7 and flue gas analyzer 12.Flue gas analysis systematic order includes flowmeter, thermometer, shut-off valve, regulating valve, vacuum pump and flue gas
Analyzer.Wherein, the effect of regulating valve is to adjust flue gas flow, to guarantee the safe and highly efficient operation of whole system；Vacuum pump
Effect is to provide the power of whole system, i.e. suction force.Vacuum pump is located at before flue gas analyzer, can prevent the draft of vacuum pump
Flue gas is directly via vacuum pump emptying and without flue gas analyzer when excessive.The technical means disclosed in the embodiments of the present invention is not only
It is limited to technological means disclosed in above embodiment, further includes technical side consisting of any combination of the above technical features
Case.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, may be used also
To make several improvements and modifications, these modifications and embellishments are also considered to be within the scope of the present invention.
Claims (7)
1. a kind of method for collecting and surveying flue gas and fly ash granule in high-temperature burner hearth, which comprises the following steps:
S1, sampling cooling
In boiler combustion process, the sampling entrance of sampling gun is placed in high-temperature burner hearth, it will by the swabbing action of vacuum pump
Sampling sample is extracted out out of high-temperature burner hearth；Sampling gun is cooled down using normal-temperature water；The sampling sample is in burner hearth comprising flying
The flue gas of ash particle；
S2, gas solid separation
The sampling sample subsequently enters gas solid separation system, including by Whirlwind cyclone carry out fly ash granule thickness separation and with
Gas solid separation is carried out by filter cylinder afterwards；
S3, flue gas analysis
Flue gas by having separated fly ash granule subsequently enters flue gas analysis system, sequentially passes through flowmeter, thermometer and flue gas
Analyzer is made a concrete analysis of and is measured to flue gas flow, temperature and constituent.
2. the method for flue gas and fly ash granule is collected and surveyed in high-temperature burner hearth as described in claim 1, which is characterized in that institute
It states in step 1, sampling gun is made of 2520 steel of refractory material；The cold-zone system of sampling gun use water cooling, 23-25 DEG C of water temperature.
3. the method collected in high-temperature burner hearth as described in claim 1, analyze flue gas and fly ash granule, which is characterized in that
In the step 1, cooling water enters from cooling water inlet, flows out from cooling water outlet；The cooling water inlet is located at cooling water
The lower section of outlet.
4. the method for flue gas and fly ash granule is collected and surveyed in high-temperature burner hearth as described in claim 1, which is characterized in that institute
It states in step 2, gas solid separation system includes Whirlwind cyclone, deduster and filter cylinder；Sampling gun connects Whirlwind cyclone, Whirlwind cyclone by hose
One end connects filter cylinder, and the other end of Whirlwind cyclone connects deduster.
5. the method for flue gas and fly ash granule is collected and surveyed in high-temperature burner hearth as described in claim 1, which is characterized in that institute
It states in step 3, flue gas analysis systematic order includes flowmeter, thermometer, shut-off valve, regulating valve, vacuum pump and flue gas analyzer.
6. a kind of system for collecting and surveying flue gas and fly ash granule in high-temperature burner hearth, it is characterised in that: including sampling gun, gas-solid
Separation system, flue gas analysis system；The gas solid separation system includes Whirlwind cyclone, deduster and filter cylinder, the flue gas analysis system
System includes flowmeter, thermometer, flue gas analyzer, shut-off valve, regulating valve 1, regulating valve 2, vacuum pump；The sampling gun passes through soft
Pipe connects Whirlwind cyclone, and the Whirlwind cyclone connects filter cylinder, and the filter cylinder connects flowmeter, and the flowmeter connects vacuum pump, described
Vacuum pump connects flue gas analyzer, shut-off valve is equipped between the flowmeter and vacuum pump, between the shut-off valve and vacuum pump
Equipped with regulating valve 1, it is equipped with regulating valve 2 between the vacuum pump and flue gas analyzer, is also set between the flowmeter and shut-off valve
There is thermometer；One end of the Whirlwind cyclone connects deduster.
7. a kind of system for collecting and surveying flue gas and fly ash granule in high-temperature burner hearth as claimed in claim 7, feature exist
In: the sampling gun includes shell, sampling entrance, cooling water inlet, cooling water outlet, and shell one end of the sampling gun is equipped with
Entrance is sampled, the other end of the sampling gun housing body is equipped with cooling water inlet, cooling water outlet, and the cooling water inlet is located at cold
But the lower section of water out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448671.7A CN110186725A (en) | 2019-05-28 | 2019-05-28 | A kind of system and method collecting and surveying flue gas and fly ash granule in high-temperature burner hearth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448671.7A CN110186725A (en) | 2019-05-28 | 2019-05-28 | A kind of system and method collecting and surveying flue gas and fly ash granule in high-temperature burner hearth |
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| CN110186725A true CN110186725A (en) | 2019-08-30 |
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| CN201910448671.7A Pending CN110186725A (en) | 2019-05-28 | 2019-05-28 | A kind of system and method collecting and surveying flue gas and fly ash granule in high-temperature burner hearth |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111539656A (en) * | 2020-05-29 | 2020-08-14 | 广东电科院能源技术有限责任公司 | Energy efficiency assessment method for sludge mixed combustion of circulating fluidized bed boiler |
| CN113702566A (en) * | 2021-08-24 | 2021-11-26 | 江苏中烟工业有限责任公司 | Device and method for analyzing sedimentation components in smoke particulate matter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111539656A (en) * | 2020-05-29 | 2020-08-14 | 广东电科院能源技术有限责任公司 | Energy efficiency assessment method for sludge mixed combustion of circulating fluidized bed boiler |
| CN113702566A (en) * | 2021-08-24 | 2021-11-26 | 江苏中烟工业有限责任公司 | Device and method for analyzing sedimentation components in smoke particulate matter |
| CN113702566B (en) * | 2021-08-24 | 2023-10-03 | 江苏中烟工业有限责任公司 | Device and method for analyzing sedimentation component in smoke particulate matters |
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Application publication date: 20190830 |