CN107344067A - A kind of coal-fired high-temperature flue gas demercuration method and device - Google Patents
A kind of coal-fired high-temperature flue gas demercuration method and device Download PDFInfo
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- CN107344067A CN107344067A CN201710510998.3A CN201710510998A CN107344067A CN 107344067 A CN107344067 A CN 107344067A CN 201710510998 A CN201710510998 A CN 201710510998A CN 107344067 A CN107344067 A CN 107344067A
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- demercuration
- flue gas
- reactor
- airway tube
- temperature flue
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 239000003546 flue gas Substances 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 49
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 41
- 239000003463 adsorbent Substances 0.000 claims abstract description 36
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 230000007423 decrease Effects 0.000 claims abstract description 5
- 239000000919 ceramic Substances 0.000 claims description 20
- 238000011068 loading method Methods 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 4
- 239000002808 molecular sieve Substances 0.000 claims description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- -1 and flux diminishes Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000007800 oxidant agent Substances 0.000 abstract description 4
- 230000001590 oxidative effect Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 7
- 230000001079 digestive effect Effects 0.000 description 5
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012417 linear regression Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910000474 mercury oxide Inorganic materials 0.000 description 1
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(ii) oxide Chemical compound [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/60—Heavy metals; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
Abstract
The invention discloses a kind of coal-fired high-temperature flue gas to take off tribute mercury method and device,This method uses to be realized uniformly to enter to expect in demercuration reactor by flue gas demercuration agent by electronic rotation valve Valve controlling,High-temperature flue gas enters demercuration reactor by air inlet gas operated device,The high-temperature flue gas forms convection current with flue gas demercuration agent in demercuration reactor,Vibrator is set on the outside of demercuration reactor,Vibrator is intermittent control shaking,Main purpose is to allow flue gas demercuration oxidant layer shape uniformly to decline,The demercuration adsorbent on air inlet gas operated device and annulus air-out apparatus can also be shaked off,And realize that high-temperature flue gas fully reacts with flue gas demercuration agent,Flue gas after demercuration is drawn by annulus air-out apparatus,Realize the purpose that demercuration is carried out to high-temperature flue gas,Apparatus of the present invention realize continuous absorption,Realization spares to gas and layered adsorbent reaction,Adapt to 500 degree of high temperature above,Air inlet and outlet air guide are uniform,Deviate from mercury efficiency high,Mercury removal agent service efficiency is high.
Description
Technical field
The present invention relates to dedusting demercuration technical field, especially a kind of coal-fired high-temperature flue gas demercuration method and device.
Background technology
Mercury is extremely toxic substance, and environment and human body are had a strong impact on.In human activity the coal-fired mercury that can make in coal because by
Heat is volatilized and is present in the form of mercury vapour in flue gas.China is coal reserves big country and consumption big country, and fire coal makes mercury emissions
Measure huge, easily cause environmental pollution, it is necessary to try every possible means to solve.
Research shows that demercuration effect is poor before combustion for coal, flue gas demercuration after more concern burnings.At present, it is domestic universal
Two class methods, which are adsorbed, using traditional dust collecting process and equipment and adsorbent carries out flue gas demercuration.
Electrostatic precipitator and sack cleaner are the widely used cleaners in coal-burning power plant.With to particulate matter in flue gas
Control, also have certain removal effect to mercury.U.S.'s DianKeYuan is to increasing a wet electrical dust precipitator after dry electric precipitation device
Technique carry out small-scale test discovery, 1 electric field therein can remove 95% PM2.5 and about 50% mercury oxide.
Flue gas desulfurization device operating temperature is relatively low, is advantageous to Hg0Oxidation and Hg2+Absorption.USDOE
Test result is shown, is 10%~84% to the removal efficiency of total mercury with the wet desulphurisation system of lime masonry absorbent.Wet
In method desulphurization system, cleaning solution makes oxidation state mercury be reduced into element mercury sometimes, causes the secondary pollution of mercury.
Adsorption technology is using the material to mercury with good adsorption properties, in flue gas in the form of injection, fixed bed etc.
Mercury carry out adsorption treatment, strengthen the removal effect of mercury.Polytype demercuration adsorbent is now had now been developed, it is main active
Charcoal, flying dust, Ca-base adsorbent, mineral substance adsorbent and noble metal adsorbent etc..Various adsorbents are still in laboratory research rank
Section, is not promoted use.
The content of the invention
The technical problems to be solved by the invention are：A kind of coal-fired high-temperature flue gas demercuration method and device are provided, to overcome
The deficiencies in the prior art.
What the present invention was realized in：
A kind of coal-fired high-temperature flue gas demercuration method, this method use flue gas demercuration agent is real by electronic rotation valve Valve controlling
Now uniformly enter to expect in demercuration reactor, high-temperature flue gas enters demercuration reactor by air inlet gas operated device, the high-temperature flue gas with
Flue gas demercuration agent forms convection current in demercuration reactor, and vibrator is set on the outside of demercuration reactor, and vibrator is intermittent control shaking, main
Syllabus is to allow flue gas demercuration oxidant layer shape uniformly to decline, moreover it is possible to which the demercuration shaked off on air inlet gas operated device and annulus air-out apparatus is inhaled
Attached dose, and realize that high-temperature flue gas fully reacts with flue gas demercuration agent, the flue gas after demercuration is drawn by annulus air-out apparatus, real
The purpose of demercuration is now carried out to high-temperature flue gas.
In a kind of foregoing coal-fired high-temperature flue gas demercuration method, the flue gas demercuration agent is graininess or powdered, and is adopted
Silver-colored 4A zeolite molecular sieves demercuration material is carried with magnetic, such as activated carbon or special high-temperature flue gas demercuration agent, preferably magnetic carries silver-colored 4A boilings
Stone molecular sieve demercuration material.This adsorbent has magnetic, while area load has silver ion, advantages of good adsorption effect.
In a kind of foregoing coal-fired high-temperature flue gas demercuration method, flue gas demercuration agent pours into demercuration reactor using loading hopper
Interior, the loading hopper is pyramidal structure, and taper is not more than the angle of friction of flue gas demercuration agent.
In a kind of foregoing coal-fired high-temperature flue gas demercuration method, the air inlet gas operated device is located at demercuration reactor bottom,
The air inlet gas operated device includes at least 2 triangular pipes being parallel to each other and formed, and demercuration reactor is stretched out in the triangular pipe one end, humanoid
Airway tube is parallel to each other and is evenly distributed in the plane that the triangular pipe is formed, and the humanoid airway tube is mutually perpendicular to triangular pipe
And connect, aperture is opened up in the rectangular surfaces of humanoid airway tube bottom surface, is easy to gas uniformly to export without being sealed by demercuration adsorbent
It is stifled, it is easy to demercuration adsorbent to pass through from top to down again.
In a kind of foregoing coal-fired high-temperature flue gas demercuration method, the annulus air-out apparatus is included on demercuration reactor
Collection balloon in portion, the airway tube the inner for being symmetrically distributed in collection balloon both sides connect with collection balloon, and demercuration reactor is stretched out in outer end
Outside, the arc-shaped airway tube one outside demercuration reactor connects with airway tube outer end respectively, on arc-shaped airway tube one
Venthole is set, and at least 2 ceramic filter tubes radially distribute in collection balloon surrounding, and the ceramic filter tube is located at demercuration reaction
Misplace in device and with airway tube, be evacuated by the air exhauster of gas outlet, airway tube one is formed certain vacuum, after demercuration
Flue gas enters collection balloon by ceramic filter tube, so as to be discharged, so reaches efficiently separating for adsorbent and flue gas, air exhauster
Inverted ventilation can be inverted, after ceramic filter tube is clogging by dust, when flux diminishes, air exhauster is carried out pumping air guide mechanism
Blowback.
A kind of coal-fired high-temperature flue gas mercury removal device, including demercuration reactor, the demercuration reactor are circular configuration, the circle
Structure be advantageous to flue gas uniformly pour into stratiform uniform adsorption, be more convenient for ash and flue gas and adsorbent between fully contact,
Loading hopper is set in demercuration reactor head, electronic rotation valve is set in loading hopper and demercuration reactor connectivity part, de-
Mercury reactor bottom sets discharging opening and sets electronic rotation valve in discharge outlet, sets annulus to go out in demercuration reactor top
Device of air, the annulus air-out apparatus outlet side are sequentially connected blower fan and chimney, and air inlet air guide is set in demercuration reactor lower part
Device, the inlet end of the air inlet gas operated device are sequentially connected deduster and boiler.
In a kind of foregoing coal-fired high-temperature flue gas mercury removal device, the loading hopper is pyramidal structure, and taper is not more than
The angle of friction of flue gas demercuration agent, its general taper is 30 °~50 ° scopes, is easy to flue gas demercuration agent to drop to electricity with minimum drag
Dynamic rotary valve.
In a kind of foregoing coal-fired high-temperature flue gas mercury removal device, the electronic rotation valve drives its rotation by asynchronous motor
Turning, rotary speed controls the amount of feeding of mercury removal agent and the translational speed in demercuration reactor by variable-frequency governor speed governing, from
And reach uniform discharge, seal the purpose of regeneration gas.
In a kind of foregoing coal-fired high-temperature flue gas mercury removal device, on the outside of demercuration reactor set can intermittent control shaking vibration
Device, main purpose is to allow flue gas demercuration oxidant layer shape uniformly to decline, and is shaked off on air inlet gas operated device and annulus air-out apparatus
Demercuration adsorbent, while realize that high-temperature flue gas fully reacts with demercuration adsorbent.
In a kind of foregoing coal-fired high-temperature flue gas mercury removal device, the air inlet gas operated device is located at demercuration reactor bottom,
The air inlet gas operated device includes at least 2 triangular pipes being parallel to each other and formed, and demercuration reactor is stretched out in the triangular pipe one end, humanoid
Airway tube is parallel to each other and is evenly distributed in the plane that the triangular pipe is formed, and the humanoid airway tube is mutually perpendicular to triangular pipe
And connect, aperture is opened up in the rectangular surfaces of humanoid airway tube bottom surface, said structure is easy to gas uniformly to export without by demercuration
Adsorbent blocks, and is easy to demercuration adsorbent to pass through from top to down again.
In a kind of foregoing coal-fired high-temperature flue gas mercury removal device, the annulus air-out apparatus is included on demercuration reactor
Collection balloon in portion, the airway tube the inner for being symmetrically distributed in collection balloon both sides connect with collection balloon, and demercuration reactor is stretched out in outer end
Outside, the arc-shaped airway tube outside demercuration reactor connects with airway tube outer end respectively, is set on arc-shaped airway tube
Venthole, at least 2 ceramic filter tubes radially distribute to be located in demercuration reactor in collection balloon surrounding, the ceramic filter tube
And misplaced with airway tube, in the course of work, it is evacuated by the air exhauster of gas outlet, airway tube is formed certain vacuum, taken off
Flue gas after mercury enters collection balloon by 8 ceramic filter tubes, so as to be discharged.So reach effective point of adsorbent and flue gas
From.Air exhauster can invert inverted ventilation, and when ceramic filter tube blocks flux by dust to diminish, air exhauster is to being evacuated air guide machine
Structure carries out blowback.
Its concrete operating principle is：When device works, flue gas demercuration agent pours into loading hopper by lifting device, opens rotation
Rotary valve door, flue gas demercuration agent enter demercuration reactor, when flue gas demercuration agent has 4/5ths capacity in absorber, open cigarette
Gas air-introduced machine, high-temperature flue gas out, are introduced into conductance device of air, then after deduster in coal-burning boiler by air-introduced machine
Stratiform uniformly comes out in the gas port of gas operated device, and flue gas demercuration adsorbent carries out solid and gas mixing and produces suction-operated,
Mercuryvapour and mercurous gaseous matter are adsorbed by demercuration adsorbent, under then importing smokestack by annulus air extractor or import
One flue gas processing device.
After certain removing time, open the rotary electric valve of absorber lower end, the velocity of rotation of control valve, make flue gas and
Demercuration adsorbent forms a kind of dynamic continuous adsorption process.
By adopting the above-described technical solution, compared with prior art, apparatus of the present invention realize continuous absorption, realize uniform
Reacted to gas and layered adsorbent, adapt to 500 DEG C of high temperature above, air inlet and outlet air guide are uniform, deviate from mercury efficiency high, and demercuration is inhaled
Attached dose of service efficiency height.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present invention；
Accompanying drawing 2 is the structural representation of electronic rotation valve in the present invention；
Accompanying drawing 3 is the structural representation of air inlet gas operated device in the present invention；
Accompanying drawing 4 is the structural representation of annulus air-out apparatus in the present invention；
Accompanying drawing 5 is mercury standard curve schematic diagram of the present invention.
Embodiment
Embodiments of the invention：A kind of coal-fired high-temperature flue gas demercuration method, this method use by flue gas demercuration adsorbent by
Electronic rotation valve Valve controlling realize uniformly enter to expect in demercuration reactor, high-temperature flue gas enters demercuration by air inlet gas operated device
Reactor, the high-temperature flue gas form convection current in demercuration reactor with flue gas demercuration agent, vibrator are set on the outside of demercuration reactor,
Vibrator is intermittent control shaking, and main purpose is to allow flue gas demercuration oxidant layer shape uniformly to decline, moreover it is possible to shakes off air inlet gas operated device and circle
Demercuration adsorbent on ring air-out apparatus, and realize that high-temperature flue gas fully reacts with flue gas demercuration agent, the flue gas after demercuration leads to
The extraction of annulus air-out apparatus is crossed, realizes the purpose that demercuration is carried out to high-temperature flue gas.
Wherein the flue gas demercuration agent is graininess or powdered, and carries silver-colored 4A zeolite molecular sieves demercuration material using magnetic,
The flue gas demercuration agent is poured into demercuration reactor using loading hopper, and the loading hopper is pyramidal structure, and the taper size is not
More than the angle of friction of flue gas demercuration agent, the air inlet gas operated device is located at demercuration reactor bottom, and the air inlet gas operated device is included extremely
Few 2 triangular pipes being parallel to each other are formed, and demercuration reactor is stretched out in the triangular pipe one end, and humanoid airway tube is parallel to each other and uniformly
It is distributed in the plane that the triangular pipe is formed, the humanoid airway tube is mutually perpendicular to and connected with triangular pipe, in humanoid airway tube
Aperture is opened up in the rectangular surfaces of bottom surface, is easy to gas uniformly to export without being blocked by demercuration adsorbent, is easy to demercuration adsorbent again
From top to down by the way that the annulus air-out apparatus includes the collection balloon in demercuration reactor top, is symmetrically distributed in collection balloon
The airway tube of both sides is inner to be connected with collection balloon, and outer end is stretched out outside demercuration reactor, the arc-shaped outside demercuration reactor
Airway tube connects with airway tube outer end respectively, venthole is set on arc-shaped airway tube, at least 2 ceramic filter tubes are in radiation
Shape is distributed in collection balloon surrounding, and the ceramic filter tube is located in demercuration reactor and misplaced with airway tube, passes through taking out for gas outlet
Exhaust fan, airway tube is set to form certain vacuum, the flue gas after demercuration enters collection balloon by ceramic filter tube, so as to quilt
Discharge, so reach efficiently separating for adsorbent and flue gas, exhausting function reversion inverted ventilation, when ceramic filter tube is clogging by dust
Afterwards, when flux diminishes, air exhauster carries out blowback to pumping air guide mechanism.
A kind of coal-fired high-temperature flue gas mercury removal device formed according to the above method, as shown in drawings, including demercuration reaction
Device 1, the demercuration reactor 1 are circular configuration, loading hopper 2 are set at the top of demercuration reactor 1, in loading hopper 2 and demercuration
The connectivity part of reactor 1 sets electronic rotation valve 3, and discharging opening 4 is set in the bottom of demercuration reactor 1 and electricity is set at discharging opening 4
Dynamic rotary valve 1, sets annulus air-out apparatus 6, the outlet side of annulus air-out apparatus 6 connects successively in the top of demercuration reactor 1
Give a dinner for a visitor from afar machine 7 and chimney 8, air inlet gas operated device 9 be set in the bottom of demercuration reactor 1, the inlet end of the air inlet gas operated device 9 according to
Secondary connection deduster 10 and boiler 11.
Wherein the loading hopper 2 is pyramidal structure, and taper is not more than the angle of friction of flue gas demercuration agent, in demercuration reactor
1 outside set can intermittent control shaking vibrator 12, the air inlet gas operated device 9 be located at the bottom of demercuration reactor 1, and the air inlet air guide fills
Put 9 to form including at least 2 triangular pipes 13 being parallel to each other, demercuration reactor 1, humanoid airway tube are stretched out in the one end of triangular pipe 13
14 are parallel to each other and are evenly distributed in the plane that the triangular pipe 13 is formed, and the humanoid airway tube 14 mutually hangs down with triangular pipe 13
Straight and connection, aperture 15 is opened up in the rectangular surfaces of the humanoid bottom surface of airway tube 14, and the ring air-out apparatus 6 includes reacting positioned at demercuration
Collection balloon 16 in the top of device 1, the inner of airway tube 17 for being symmetrically distributed in collection balloon 16 both sides are connected with collection balloon 16, and outer end is stretched
Going out outside demercuration reactor 1, the arc-shaped airway tube 18 outside demercuration reactor 1 connects with the outer end of airway tube 17 respectively,
Venthole 19 is set on arc-shaped airway tube 18, and at least 2 ceramic filter tubes 20 radially distribute in the collection surrounding of balloon 16, should
Ceramic filter tube 20 is located in demercuration reactor 1 and misplaced with airway tube 17.
To investigate adsorbent to the adsorption capacity of mercury, using the present embodiment, adsorption test has been carried out.Determine adsorbent pair
The adsorption rate of mercury.
After adsorption reaction, adsorbent is added in 40mL chloroazotic acid, 20h is digested at 60 DEG C of water-bath, digestive juice is fixed
Liquid constant volume is measured to digestive juice mercury content using QM 201H types mercury vapourmeters to 1L, first has to determine mercury standard curve.
Mercury standard solution is measured using QM 201H type mercury vapourmeters, as a result as shown in table 1.
The peak value of each concentration standard liquid of table 1
Using matlab softwares using the content of mercury as ordinate, the standard of mercury is drawn out using the peak value measured as abscissa
Curve y=ax+b.
Linear regression is carried out using matlab softwares and obtains mercury standard curve, and regression effect is shown in Fig. 5.
As seen from Figure 5, each point of linear regression all intersects with line, and the notable property coefficient of linear regression is 0.9801, effect
Fruit is fine, and mercury standard curve is：
Y=0.0158 χ -1.8689
The digestive juice after 5mL constant volumes is taken to measure, the peak value of measurement is 2765, brings mercury calibration curve formula into, is calculated
It is 41.8181ng to go out 5mL digestive juices mercury content, and therefore, the total mercury content of digestive juice is 8.3636 μ g, so, adsorbent is to mercury
Adsorption rate be 13.5927 μ g/g.It wants small by one relative to activated carbon to the adsorption capacity (adsorption rate is more than 100 μ g/g) of mercury
A bit, but it is larger than the adsorption capacity of remaining adsorbent (for example, flying dust adsorbent to the adsorption rate of mercury 0.2-2 μ g/g it
Between).
The description of such scheme is the invention for being understood that and using for ease of those skilled in the art, is familiar with
The personnel of art technology obviously can easily make various modifications to embodiment, and therefore, the invention is not restricted to above-mentioned reality
Scheme, those skilled in the art's the method according to the invention, does not depart from improvement that scope made and modification all should
Within protection scope of the present invention.
Claims (10)
- A kind of 1. coal-fired high-temperature flue gas demercuration method, it is characterised in that：This method is used flue gas demercuration agent by electronic rotation valve Valve controlling realize uniformly enter to expect in demercuration reactor, high-temperature flue gas enters demercuration reactor by air inlet gas operated device, this High-temperature flue gas forms convection current with flue gas demercuration agent in demercuration reactor, vibrator is set on the outside of demercuration reactor, vibrator is Intermittent control shaking, allow flue gas demercuration agent uniformly to decline in stratiform, and shake off the demercuration on air inlet gas operated device and annulus air-out apparatus Agent, realize that high-temperature flue gas fully reacts with flue gas demercuration agent, the flue gas after demercuration is drawn by annulus air-out apparatus, is realized to height Warm flue gas carries out the purpose of demercuration.
- A kind of 2. coal-fired high-temperature flue gas demercuration method according to claim 1, it is characterised in that：The flue gas demercuration agent is Graininess is powdered, and carries silver-colored 4A zeolite molecular sieves demercuration material using magnetic.
- A kind of 3. coal-fired high-temperature flue gas demercuration method according to claim 1, it is characterised in that：The flue gas demercuration agent uses Loading hopper is poured into demercuration reactor, and the loading hopper is pyramidal structure, and the taper size is no more than flue gas demercuration agent Angle of friction.
- A kind of 4. coal-fired high-temperature flue gas demercuration method according to claim 1, it is characterised in that：The air inlet gas operated device Positioned at demercuration reactor bottom, the air inlet gas operated device is made up of at least 2 triangular pipes being parallel to each other, and triangular pipe one end is stretched out Demercuration reactor, humanoid airway tube are parallel to each other and are evenly distributed in the plane that the triangular pipe is formed, the humanoid airway tube Be mutually perpendicular to and connect with triangular pipe, aperture is opened up in the rectangular surfaces of humanoid airway tube bottom surface, be easy to gas uniformly export and Do not blocked by demercuration adsorbent, be easy to demercuration adsorbent to pass through from top to down again.
- A kind of 5. coal-fired high-temperature flue gas demercuration method according to claim 1, it is characterised in that：The annulus air-out apparatus Including the collection balloon in demercuration reactor top, the airway tube for being symmetrically distributed in collection balloon both sides is inner with collecting balloon company Logical, outer end is stretched out outside demercuration reactor, and the arc-shaped airway tube outside demercuration reactor connects with airway tube outer end respectively, Venthole is set on arc-shaped airway tube, and at least 2 ceramic filter tubes radially distribute in collection balloon surrounding, the ceramic mistake Chimney filter is located in demercuration reactor and misplaced with airway tube, is evacuated by the air exhauster of gas outlet, forms airway tube certain Vacuum, the flue gas after demercuration enters collection balloon by ceramic filter tube, so as to be discharged, so reaches adsorbent and flue gas Efficiently separate, exhausting function reversion inverted ventilation, when ceramic filter tube is blocked by dust, and flux diminishes, air exhauster is to pumping Air guide mechanism carries out blowback.
- 6. a kind of coal-fired high-temperature flue gas mercury removal device, including demercuration reactor (1), it is characterised in that：The demercuration reactor (1) is Circular configuration, loading hopper (2) is set at the top of demercuration reactor (1), connected in loading hopper (2) with demercuration reactor (1) Place sets electronic rotation valve (3), and discharging opening (4) is set in demercuration reactor (1) bottom and sets electronic rotation at discharging opening (4) place Rotary valve (5), annulus air-out apparatus (6) is set in demercuration reactor (1) top, and annulus air-out apparatus (6) outlet side is successively Connecting fan (7) and chimney (8), air inlet gas operated device (9), the air inlet gas operated device are set in demercuration reactor (1) bottom (9) inlet end is sequentially connected deduster (10) and boiler (11).
- A kind of 7. coal-fired high-temperature flue gas mercury removal device according to claim 6, it is characterised in that：The loading hopper (2) For pyramidal structure, and taper is not more than the angle of friction of flue gas demercuration agent.
- A kind of 8. coal-fired high-temperature flue gas mercury removal device according to claim 6, it is characterised in that：In demercuration reactor (1) Outside set can intermittent control shaking vibrator (12).
- A kind of 9. coal-fired high-temperature flue gas mercury removal device according to claim 6, it is characterised in that：The air inlet gas operated device (9) it is located at demercuration reactor (1) bottom, the air inlet gas operated device (9) includes at least 2 triangular pipe (13) structures being parallel to each other Demercuration reactor (1) is stretched out into, triangular pipe (13) one end, and humanoid airway tube (14) is parallel to each other and is evenly distributed on the triangle In the plane that pipe (13) is formed, the humanoid airway tube (14) is mutually perpendicular to and connected with triangular pipe (13), in humanoid airway tube (14) aperture (15) is opened up in the rectangular surfaces of bottom surface.
- A kind of 10. coal-fired high-temperature flue gas mercury removal device according to claim 6, it is characterised in that：The annulus outlet dress Putting (6) includes the collection balloon (16) in demercuration reactor (1) top, is symmetrically distributed in the airway tube of collection balloon (16) both sides (17) inner to be connected with collection balloon (16), demercuration reactor (1) is stretched out outside in outer end, the circular arc outside positioned at demercuration reactor (1) Shape airway tube (18) connects with airway tube (17) outer end respectively, the setting venthole (19) on arc-shaped airway tube (18), and at least 2 Root ceramic filter tube (20) radially distributes is located at demercuration reactor in collection balloon (16) surrounding, the ceramic filter tube (20) (1) misplaced in and with airway tube (17).
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