CN106731944A - A kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction - Google Patents
A kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction Download PDFInfo
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- CN106731944A CN106731944A CN201611246025.5A CN201611246025A CN106731944A CN 106731944 A CN106731944 A CN 106731944A CN 201611246025 A CN201611246025 A CN 201611246025A CN 106731944 A CN106731944 A CN 106731944A
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- Prior art keywords
- adsorbent
- coal
- feeder
- feed bin
- hopper
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/80—Falling particle mixers, e.g. with repeated agitation along a vertical axis
- B01F25/90—Falling particle mixers, e.g. with repeated agitation along a vertical axis with moving or vibrating means, e.g. stirrers, for enhancing the mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/60—Mixing solids with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7173—Feed mechanisms characterised by the means for feeding the components to the mixer using gravity, e.g. from a hopper
- B01F35/71731—Feed mechanisms characterised by the means for feeding the components to the mixer using gravity, e.g. from a hopper using a hopper
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/10—Treating solid fuels to improve their combustion by using additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/501—Mixing combustion ingredients, e.g. gases, for burners or combustion chambers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/02—Absorbents, e.g. in the absence of an actual absorbent column or scavenger
Abstract
The invention belongs to pollution that caused by coal burning thing control field, it is related to a kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction, coal conveyer belt top is co-located at coal breakage bucket, including at least a set of feeder unit and a hopper, feeder unit includes adsorbent feed bin, the solid float in adsorbent feed bin and the star-like feeder installed in adsorbent feed bin lower end exit, the discharge gate of star-like feeder is located at hopper top, and hopper is located at coal conveyer belt top；Additionally, device is further equipped with contamination detection, including low pressure ram sampling apparatus and flue gas analyzer, for detecting the coal fire discharged thing such as particulate matter and oxysulfide, nitrogen oxides.The arrangement achieves to the accurate adjustable continuous uniform supply of high-volume adsorbent, the emission reduction effect to pollutants such as particulate matter and SOx, NOx is realized.
Description
Technical field
The invention belongs to pollution that caused by coal burning thing control field, more particularly, to a kind of suction for Particulates from Coal Combustion emission reduction
Attached dose of add-on system.
Background technology
China is faced with serious fine particle (PM2.5) pollution problem, and coal-fired power station boiler is arranged as important PM2.5
One of source is put, the emission request of its flue dust and particulate matter (PM) is increasingly strict.According to revised《Thermal power plant atmosphere pollution row
Put standard》(GB13223-2011), from 1 day January in 2015, newly-built and existing coal unit soot emissions all need to perform
20mg/m3Limit value.It is higher or further tight in the future in coal-fired ash content according to the coal unit soot emissions situation grasped
In the case of lattice discharge standard, there is certain discharge beyond standards risk in unit.
At present, for soot emissions problem, domestic power plant is assembled with special cleaner, such as electrostatic precipitator, cloth
Bag dust collector and electric-bag complex dust collector etc., but influenceed by cleaner working characteristics, most of cleaner is to ultra-fine grain
The removal efficiency of thing is not high, causes a large amount of superfine particulate matters to be discharged into air, causes serious atmosphere pollution, harmful to human
Health.Addition adsorbent is a kind of measure of effective control Particulates from Coal Combustion discharge in stove, can effectively reduce ultra-fine
The growing amount of grain thing, makes up the deduster defect not high to superfine particulate matter removal efficiency.Adsorbent is added in coal-burning power plant
The adsorbent add-on system for needing design special, and the destruction to power plant's existing structure is avoided as far as possible.In view of power plant system is answered
The stability and security requirement of polygamy and system operation, the device should possess continuously, the ability of stable supplying adsorbent, together
When should transform or build simple, system independence, and the features such as do not influence the currently running system in coal-burning power plant.
A kind of adsorbent material adding set is provided in CN201520371809.5.The device includes raw material cabin, blowing
Pipe, regulation flashboard and support etc., control to open and close regulation flashboard by electric pushrod, and regulation flashboard is arranged on vomit pipe
The mouth of pipe, vomit pipe is arranged on the bottom of raw material cabin.The vibration bin in support rod, the vibration are provided with below vomit pipe
The discharging opening lower section in storehouse is provided with stirring tank body.The adding set can realize the addition of adsorbent, but have that part is more, be
System is complicated, and is only suitable for the problem of a small amount of adsorbent addition.Therefore, an adsorbent add-on system how is designed, can
The accurate adjustable continuous supply of high-volume adsorbent is realized in the case where the normal operation of equipment safety and unit is not influenceed is
The problem to be solved at present.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of for Particulates from Coal Combustion emission reduction
Adsorbent add-on system, realizes high-volume solid absorbent accurately adjustable by feeder unit and pollutant emission detection unit
Continuous addition, realize the emission reduction effect of flue dust and PM2.5.
To achieve the above object, it is proposed, according to the invention, add system there is provided a kind of adsorbent for Particulates from Coal Combustion emission reduction
System, coal conveyer belt top, including at least a set of feeder unit and a hopper are co-located at coal breakage bucket, and feeder unit includes
Adsorbent feed bin, the solid float in adsorbent feed bin and the star-like feed installed in adsorbent feed bin lower end exit
Device, the discharge gate of star-like feeder is located at hopper top, and hopper is located at coal conveyer belt top；
Additionally, device is further equipped with contamination detection, including low pressure ram sampling apparatus and flue gas analyzer, use
In the detection coal fire discharged thing such as particulate matter and oxysulfide, nitrogen oxides.
Adsorbent is filled in adsorbent feed bin, adsorbent is discharged to hopper by star-like feeder control delivery rate, under
Be discharged to adsorbent on coal conveyer belt by hopper, then adsorbent and the coal charge blending transportation discharged by coal breakage bucket on coal conveyer belt
To coal-fired furnace cavity, realize that adsorbent mixes with the uniform of coal charge, and then realize the purpose of particulate matter emission reduction；Contamination detection
The pollutants such as the fine particle to boiler emission after addition adsorbent carry out on-line testing, specifically, by low pressure ram
(LPI) the sampling apparatus particle size range that gradation footpath section collects discharge before and after adsorbent addition respectively is 0.01 μm~10 μm thin
Particulate matter, the situation of change for obtaining Particulates from Coal Combustion growing amount after adsorbent is added is calculated by subtractive, while flue gas analyzer
Change in concentration situation for testing SOx, NOx in the front and rear flue gas of adsorbent addition, so, on the one hand contamination detection is
On-line control sorbent feed rates provide data supporting, on the other hand can in real time measure the emission reduction situation of pollutant, to dirt
Dye thing emission reduction effect makes evaluation, if not up to expected require, adjusts the delivery rate of star-like feeder to realize adsorbent
With the different Blend proportions of coal charge, and then change pollutant emission reduction situation, this process is repeated several times up to standard to pollutant emission
Or filter out optimal emission reduction effect.
Preferably, mixer is installed in adsorbent feed bin.Purpose is using mixer stirring and adsorbing agent incessantly
Solid powder, the normal work for preventing adsorbent bridging caking influence star-like feeder.
Preferably, device is equipped with two sets of symmetrically arranged feeder units, adsorbent feed bin that two sets of feeder units are used,
The model difference of solid float and star-like feeder is consistent with each other, and the discharge gate of the star-like feeder in two sets of feeder units is equal
Positioned at hopper top.Made as a result of two sets of feeder units and to its concrete arrangement and further study and set
Meter, so one side, because repowering space is limited, using a set of feeder unit, wherein adsorbent feed bin floor space with
And vertical height can be excessive, it is unfavorable for the carrying out of transformation；On the other hand, two adsorbent feed bins are transported side by side in normal conditions
OK, when certain adsorbent feed bin breaks down, single adsorbent feed bin operation can be switched to ensure the uninterrupted of feed,
And ensure the constant of overall delivery rate by 2 times that adjust that the speed of star-like feeder is original speed, so as to ensure electricity
The normal operation of all machines of factory.
Preferably, solid float is arranged at the height of adsorbent feed bin inside 1/5.When adsorbent surplus is less than 1/5,
Solid float exposes solid adsorbent surfaces, points out to need to feed again.
Preferably, solid float is the solid float of metal material, and rub resistance can be with the use of long period.
In general, by the contemplated above technical scheme of the present invention compared with prior art, can obtain following has
Beneficial effect：
(1) the system simple structure, independence, can be installed, no on the basis of power plant's original system, equipment are constant
The normal operation of influence equipment safety and unit, it is easy to promoted in coal-burning power plant, possess preferable practical value.
(2) the system can realize that, to the accurate adjustable continuous supply of high-volume adsorbent, adsorbent and coal are realized in completion
The uniform mixing of material, and then realize the emission reduction effect to pollutants such as particulate matter and SOx, NOx.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram of the system.
Wherein, 1- adsorbents feed bin, 2- star-like feeders, 3- hoppers, 4- coal breakage buckets, 5- coal conveyer belts.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as additionally, technical characteristic involved in invention described below each implementation method
Not constituting conflict each other can just be mutually combined.
Embodiment 1
The adsorbent add-on system is used in domestic certain coal unit of 300MW, specific flow and relevant parameter
It is as follows：
Standby adsorbent storage adds according to unit to coal speed and pre-determined adsorbent first in the coal yard of power plant
Plus ratio is calculated every time the quantity of sorbent that upper coal needs, need that enough adsorbents first are added into two adsorbents before upper coal
In feed bin.After starting upper coal, the adsorbent in adsorbent feed bin 1 is unloaded to hopper 3 by star-like feeder 2 by the speed of setting
In, subsequent adsorbent is fallen on coal conveyer belt 5 from hopper 3, and it is uniform with the coal charge in coal breakage bucket 4 mix after, deliver to fire coal
Burner hearth is burnt.Be to ensure 300MW units lower operation 6h at full capacity, set coal parameter as：Upper coal continues 2h, upper coal speed
400t/h；Calculated by the adsorbent adding proportion 3% of setting, need quantity of sorbent for 24t altogether, carried respectively in two adsorbent feed bins
Preceding addition 12t adsorbents, the delivery rate of each adsorbent feed bin is 2t/h.Unit can be normally continuously full by this adding rate
Load operation.
Coordinate pollutant emission detection unit low pressure ram (LPI) sampling apparatus and flue gas analyzer, it was demonstrated that pollutant
(particulate matter, SOx and NOx etc.) discharge value has a certain degree of decline, by changing the delivery rate of star-like feeder, can be with
Obtain different pollution reduction effects.
Embodiment 2
The adsorbent add-on system is used in domestic certain coal unit of 600MW, specific flow and relevant parameter
It is as follows：
Standby adsorbent storage adds according to unit to coal speed and pre-determined adsorbent first in the coal yard of power plant
Plus ratio is calculated every time the quantity of sorbent that upper coal needs, need that enough adsorbents first are added into two adsorbents before upper coal
In feed bin.After starting upper coal, the adsorbent in adsorbent feed bin 1 is unloaded to hopper 3 by star-like feeder 2 by the speed of setting
In, subsequent adsorbent is fallen on coal conveyer belt 5 from hopper 3, and it is uniform with the coal charge in coal breakage bucket 4 mix after, deliver to fire coal
Burner hearth is burnt.Be to ensure 600MW units lower operation 6h at full capacity, set coal parameter as：Upper coal continues 2h, upper coal speed
1000t/h；Calculated by the adsorbent adding proportion 3% of setting：Quantity of sorbent is needed altogether for 60t, in two adsorbent feed bins respectively
30t adsorbents are added in advance, and the delivery rate of each adsorbent feed bin is 5t/h.Unit is pressed can be normally continuous by this adding rate
Oepration at full load.
Coordinate pollutant emission detection unit low pressure ram (LPI) sampling apparatus and flue gas analyzer, it was demonstrated that pollutant
(particulate matter, SOx, NOx etc.) discharge value has a certain degree of decline, by changing the delivery rate of star-like feeder, can be with
Obtain different pollution reduction effects.
Embodiment 3
The adsorbent add-on system is used in domestic certain coal unit of 1000MW, specific flow and relevant parameter
It is as follows：
Standby adsorbent storage adds according to unit to coal speed and pre-determined adsorbent first in the coal yard of power plant
Plus ratio is calculated every time the quantity of sorbent that upper coal needs, need that enough adsorbents first are added into two adsorbents before upper coal
In feed bin.After starting upper coal, the adsorbent in adsorbent feed bin 1 is unloaded to hopper 3 by star-like feeder 2 by the speed of setting
In, subsequent adsorbent is fallen on coal conveyer belt 5 from hopper 3, and it is uniform with the coal charge in coal breakage bucket 4 mix after, deliver to burner hearth
Burnt.Be to ensure 1000MW units lower operation 6h at full capacity, set coal parameter as：Upper coal continues 2h, upper coal speed
1500t/h；Calculated by the adsorbent adding proportion 3% of setting：Quantity of sorbent is needed altogether for 90t, in two adsorbent feed bins respectively
45t adsorbents are added in advance, and the delivery rate of each adsorbent feed bin is 7.5t/h.Unit can normally connect by by this adding rate
Continuous oepration at full load.
Coordinate pollutant emission detection unit low pressure ram (LPI) sampling apparatus and flue gas analyzer, it was demonstrated that pollutant
(particulate matter, SOx, NOx etc.) discharge value has a certain degree of decline, by changing the delivery rate of star-like feeder, can be with
Obtain different pollution reduction effects.
Device of the invention is installed on the basis of power plant's original system, equipment are constant, does not influence equipment safety
With the normal operation of unit, adjustable continuous uniform accurate to high-volume adsorbent supply is realized, make adsorbent equal with coal charge
Even mixing, and then realize the emission reduction effect to pollutants such as particulate matter and SOx, NOx.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, it is not used to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should include
Within protection scope of the present invention.
Claims (5)
1. a kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction, is co-located on coal conveyer belt (5) with coal breakage bucket (4)
Side, it is characterised in that：
Described device includes at least a set of feeder unit and a hopper (3), and the feeder unit includes adsorbent feed bin
(1) solid float, in the adsorbent feed bin (1) and installed in adsorbent feed bin (1) the lower end exit
Star-like feeder (2), the discharge gate of the star-like feeder (2) is located at the hopper (3) top, hopper (3) position
In the coal conveyer belt (5) top；
Additionally, described device is further equipped with contamination detection, including low pressure ram sampling apparatus and flue gas analyzer, use
In the detection coal fire discharged thing such as particulate matter and oxysulfide, nitrogen oxides.
2. adsorbent add-on system as claimed in claim 1, it is characterised in that：Stirring is installed in the adsorbent feed bin
Machine.
3. adsorbent add-on system as claimed in claim 1 or 2, it is characterised in that：Described device symmetrically sets equipped with two sets
The feeder unit put, two sets of models point of the adsorbent feed bin (1), solid float and star-like feeder (2) of feeder unit use
It is not consistent with each other, and the discharge gate of the star-like feeder (2) in two sets of feeder units is respectively positioned on the hopper (3) top.
4. adsorbent add-on system as claimed in claim 1 or 2, it is characterised in that：The solid float is arranged on the suction
At the attached dose of height of feed bin inside 1/5.
5. adsorbent add-on system as claimed in claim 1 or 2, it is characterised in that：The solid float is metal material
Solid float.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246025.5A CN106731944B (en) | 2016-12-29 | 2016-12-29 | A kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246025.5A CN106731944B (en) | 2016-12-29 | 2016-12-29 | A kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106731944A true CN106731944A (en) | 2017-05-31 |
| CN106731944B CN106731944B (en) | 2019-10-08 |
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ID=58928864
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611246025.5A Active CN106731944B (en) | 2016-12-29 | 2016-12-29 | A kind of adsorbent add-on system for Particulates from Coal Combustion emission reduction |
Country Status (1)
| Country | Link |
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| CN (1) | CN106731944B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5586510A (en) * | 1994-03-16 | 1996-12-24 | Cement Industry Environment Consortium | Method and system for controlling pollutant emissions in combustion operations |
| CN104266179A (en) * | 2014-10-11 | 2015-01-07 | 中国电力工程顾问集团西南电力设计院 | Limestone two-stage adding system for CFB (Circulating Fluid Bed) boiler |
-
2016
- 2016-12-29 CN CN201611246025.5A patent/CN106731944B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5586510A (en) * | 1994-03-16 | 1996-12-24 | Cement Industry Environment Consortium | Method and system for controlling pollutant emissions in combustion operations |
| CN104266179A (en) * | 2014-10-11 | 2015-01-07 | 中国电力工程顾问集团西南电力设计院 | Limestone two-stage adding system for CFB (Circulating Fluid Bed) boiler |
Non-Patent Citations (1)
| Title |
|---|
| 何相助等: "《企业合理用能诊断》", 30 April 2007, 湖南科学技术出版社 * |
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| CN106731944B (en) | 2019-10-08 |
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