CN106066046A - Desulphurization denitration dust collection method for the liquefied gas of burning - Google Patents

Desulphurization denitration dust collection method for the liquefied gas of burning Download PDF

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Publication number
CN106066046A
CN106066046A CN201610348375.6A CN201610348375A CN106066046A CN 106066046 A CN106066046 A CN 106066046A CN 201610348375 A CN201610348375 A CN 201610348375A CN 106066046 A CN106066046 A CN 106066046A
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ammonia
burning
liquefied gas
bubble
cap
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CN106066046B (en
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赵军政
赵倩
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Ningbo High-Tech Zone Shidai Energy Technology Co Ltd
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Ningbo High-Tech Zone Shidai Energy Technology Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/007—Supplying oxygen or oxygen-enriched air
    • 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
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
    • 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
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • 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
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • 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
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • 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
    • F23J2215/10—Nitrogen; 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 
    • F23J2215/00—Preventing emissions
    • F23J2215/20—Sulfur; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/07005—Injecting pure oxygen or oxygen enriched air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Treating Waste Gases (AREA)

Abstract

nullA kind of desulphurization denitration dust collection method of the liquefied gas for burning，Before the liquefied gas of burning does not do burning, desulfurization processes，Liquefied gas uses excess pure oxygen combustion-supporting during burner combustion，Air is replaced with excess pure oxygen，Utilize temperature sensor one、Control centre one、Flow control valve one，Control liquefied gas supply flow rate，Burner combustion temperature stabilization is controlled between 850～1100 DEG C，Excess liquefied ammonia is sprayed to combustion tail gas in denitrator，Utilize combustion tail gas waste heat，Heating pure oxygen，Utilize temperature sensor two、Control centre two、Flow control valve two，Control oxygen supply flow rate，Spray excessive ammonia in the tail gas of 300～380 DEG C in devulcanizer temperature，By intelligence bubble column，Utilize control centre three、Ammonia display instrument、Water flow control valve three，Adjust the flow absorbing water，Use and absorb ammonia and the water diluent ammonia that escape ammonia produces，Produce the ammonia in sweetening process；The invention have the advantage that energy-conservation, desulphurization and denitration, dedusting, reduction of discharging, environmental protection.

Description

Desulphurization denitration dust collection method for the liquefied gas of burning
Technical field
The present invention relates to desulfuration of liquefied gas denitration dust collecting field.
Background technology
In prior art, the desulphurization denitration of liquefied gas is all to carry out desulphurization denitration, either physics before liquefied gas burns Method or chemical method, be all to process before liquefied gas burns, not only to spend sizable equipment and operating cost Expense, and desulfurized effect is poor, side-product environment to be polluted, and still more in liquefied gas combustion process, takes sky Gas is combustion-supporting, and owing in air, oxygen concentration only has about 21%, in reaction, oxygen concentration is little, and burning velocity is low, and result causes liquid Activating QI burning is insufficient, produces the dust such as a large amount of carbon granule, carbon monoxide, Hydrocarbon, Long carbon chain larger molecular organics dirty Contaminate the acidic oxides such as thing, and nitrogen oxides, sulfide, sulfur dioxide, cause greatly pollution to environment after emptying, seriously endanger Victimization class, animal and plant living safety.
Summary of the invention
There is provided a kind of desulphurization denitration dust collection method of liquefied gas for burning for above-mentioned common problem, to Liquefied gas in burning takes following method: the first step, before the liquefied gas of burning does not do burning, desulfurization processes, and liquefied gas is in combustion Burner combustion process uses excess pure oxygen combustion-supporting, replaces air, excess pure oxygen burning with excess pure oxygen, make fuel instantaneous effectively Ground combustion rate reaches Up limit, and excess pure oxygen refers to: supply 1.1～1.3 times of theoretical pure oxygen amounts；Thoroughly reduce discharging carbon granule, The pollutant such as carbon monoxide, Hydrocarbon, Long carbon chain larger molecular organics, reach dust collection target；Owing to pure oxygen not having nitrogen Gas, just entirely without the nitrogen oxides produced by nitrogen, the nitrogen oxides that in liquefied gas, very small amount nitrogen produces, combustion gas in tail gas Body total amount reduces 70～80%, and the heat that tail gas is taken away reduces 70～80%, energy-saving and emission-reduction；Second step, controls liquefied gas supply Flow so that burner combustion temperature stabilization control 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, between 850～1100 DEG C, when When ignition temperature is less than 850 DEG C or higher than 1100 DEG C, during in burner, temperature sensor one passes to signal to control immediately The heart one, control centre one is signaled to liquefied gas flow control valve one immediately, adjusts liquefied gas supply flow rate, until burner Ignition temperature return to 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, between 850～1100 DEG C after, keep stable liquefied gas Flow supplies, maintain stable ignition temperature 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, between 850～1100 DEG C, in denitration Device is given temperature 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, combustion tail gas sprays excess liquefied ammonia, institute between 850～1100 DEG C The excessive liquefied ammonia stated refers to 1.1～1.3 times of theoretical liquefied ammonia, utilizes oxygen sufficient in combustion process so that produce in combustion process Raw very small amount nitrogen oxides is reduced to the metastable nitrogen of character, reaches out of stock target；3rd step, profit in heat exchanger Use combustion tail gas waste heat, heat pure oxygen, reduce exhaust temperature, improve energy in oxygen, utilize temperature sensor two and oxygen flow Control valve two, control centre two, control exhaust temperature at 330 DEG C, 350 DEG C, 300～380 DEG C, if exhaust temperature is higher than 380 DEG C or less than 300 DEG C, in heat exchanger, two signals of temperature sensor pass to control centre two, and control centre two is immediately Be signaled to oxygen flux control valve two, adjust oxygen flow so that exhaust temperature stability contorting 330 DEG C, 350 DEG C, 300 ～380 DEG C, give in devulcanizer temperature 330 DEG C, 350 DEG C, the tail gas of 300～380 DEG C sprays excessive ammonia, utilize in tail gas Sufficient oxygen, ammonia make oxysulfide react generation ammonium sulfate completely, reach the target of complete desulfurization, described excess ammonia Water refers to: supply 1.1～1.3 times of theoretical ammonia vol of complete desulfurization, due to supply excess liquefied ammonia and ammonia, although in tail gas Reaching the target of complete desulphurization denitration, always some ammonia is escaped in tail gas；4th step, utilizes intelligence bubble column, passes through Ammonia in water and tail gas counter-current absorption tail gas, owing to ammonia is highly soluble in water, utilize control centre three, ammonia detection display instrument, Water flow control valve three, adjusts the flow absorbing water, reaches the ammonia target fully absorbing in tail gas, described intelligent bubble column In bubble-cap connection on column plate be the most rotatable, described bubble-cap contains dynamic rotating axle, described dynamic rotary One end of axle is fixing to be connected or is detachably connected on below column plate, and the other end of dynamic rotating axle passes bubble-cap, is then passed through Miniature lightweight spherical bearing above bubble-cap, is then passed through pad, is topmost dismountable being axially located by connecting on lid or bubble-cap Face is directly dismountable lid that is axially located by connecting；Bubble-cap gas passage from all directions is helical form curved surface passage, all spiral shells The curvature of the curved surface of rotation shape curved surface passage is identical, and the direction of curved surface is identical, when gas enters through curved surface passage When entering liquid, the opposition of generation promotes bubble-cap to rotate, and bubble-cap rotational agitation liquid motion improves the biography of gas and liquid Matter and heat-transfer capability, improve mass-and heat-transfer ability between liquid diverse location simultaneously, promote diverse location liquid mass transfer concentration and The uniformity of heat transfer temperature, has the bubble-cap of projection to rotate location cylinder, positions cylinder, bubble-cap, dynamically revolves in bubble-cap above column plate Rotating shaft three axle is coaxial, positions cylinder entirety connected or same with column plate or removably connects, and the height of location cylinder is more than The axial string momentum of bubble-cap；Overflow pipe has rotatable turbine, enters the process of next column plate at liquid through overflow pipe In, liquid flows in overflow pipe, drives turbine rotary motion, agitation liquid motion to mix, different in promoting liquid further Mixing transmission between concentration and temperature, improves mass transfer, heat-transfer capability；The turbine wheel outline of described turbine is circular arc Shape, circular arc size matches with overflow pipe circular arc.5th step, utilizes intelligence bubble column to absorb in ammonia dilution tuner and escapes The ammonia of ammonia generation and water diluent ammonia, produce the ammonia of the suitable concn needed in sweetening process, be finally reached whole mistake Journey recycles, it is to avoid pollute environment.The advantage of this technology is: desulfurization, out of stock, dedusting, cost-effective, and energy-saving and emission-reduction are without dirt Dye.
The concrete technical scheme solving problem:
A kind of desulphurization denitration dust collection method of the liquefied gas for burning:
The first step, before the liquefied gas of burning does not do burning, desulfurization processes, and makes in liquefied gas combustion process in the burner With excess pure oxygen combustion-supporting, replacing air with excess pure oxygen, burning gases total amount reduces 70～80%, and the heat that tail gas is taken away reduces 70～80%, excess pure oxygen burning, make the instantaneous rate that is effectively burned of fuel reach Up limit；Described excessive pure oxygen is Refer to: supply 1.1～1.3 times of theoretical pure oxygen amounts.
Second step, utilizes temperature sensor one, control centre one, flow control valve one in the burner, controls liquefied gas Supply flow rate so that in burner, ignition temperature stability contorting is at 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, 850～1100 DEG C Between；Give temperature 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, 850～1100 DEG C of combustion tail gas sprinkling excess in denitrator Liquefied ammonia, utilizes oxygen sufficient in combustion process so that the very small amount nitrogen oxides produced in combustion process is reduced to character phase To stable nitrogen；Described excessive liquefied ammonia refers to: supply the theoretical liquefied ammonia amount of 1.1～1.3 times.
3rd step, utilizes combustion tail gas waste heat in heat exchanger, heats pure oxygen, utilizes heat exchange temperature sensor two, control Center two processed, flow control valve two, control oxygen supply flow rate so that exhaust temperature stability contorting 330 DEG C, 350 DEG C, 300 ～380 DEG C, give in devulcanizer temperature 330 DEG C, 350 DEG C, 300～380 DEG C of tail gas spray excessive ammonia, utilize in tail gas The oxygen of abundance, ammonia so that the oxysulfide in tail gas generates ammonium sulfate completely, and described excessive ammonia refers to: for giving 1.1～1.3 times of the theoretical ammonia vol of full desulfurization.
4th step, by intelligence bubble column, utilizes control centre three, ammonia detection display instrument, Water flow control valve three, adjusts The flow of whole absorption water, reaches the ammonia target fully absorbing in tail gas；The described bubble-cap in intelligent bubble column is on column plate Connection be the most rotatable, described bubble-cap contains dynamic rotating axle, and one end of described dynamic rotating axle is fixing to be connected Or be detachably connected on below column plate, the other end of dynamic rotating axle pass bubble-cap, be then passed through above bubble-cap miniature gently Matter spherical bearing, is then passed through pad, is topmost dismountable to be axially located by connecting lid or bubble-cap is dismountable immediately above Axially be located by connecting lid；Bubble-cap gas passage from all directions is helical form curved surface passage, the song of all helical form curved surface passages The curvature in face is identical, and the direction of curved surface is identical, when gas enters liquid through curved surface passage, and generation anti- Bubble-cap is promoted to rotate to active force, bubble-cap rotational agitation liquid motion, improves gas and the mass transfer of liquid and heat-transfer capability, simultaneously Improve mass-and heat-transfer ability between liquid diverse location, promote diverse location liquid mass transfer concentration and the uniformity of heat transfer temperature, The bubble-cap having projection above column plate in bubble-cap rotates location cylinder, and location cylinder, bubble-cap, dynamic rotating axle three axle are coaxial, location Cylinder and column plate are connected or same entirety or removably connect, and the height of location cylinder is more than the axial string momentum of bubble-cap； Having rotatable turbine in overflow pipe, at liquid during overflow pipe enters next column plate, liquid is in overflow pipe Flowing, drive turbine rotary motion, agitation liquid motion mixing, promote mixing between variable concentrations and temperature in liquid further Close transmission, improve mass transfer, heat-transfer capability；The turbine wheel outline of described turbine is circular shape, circular arc size and overflow pipe Circular arc matches.
5th step, uses intelligence bubble column to absorb ammonia and the water dilution of the generation of escape ammonia in ammonia dilution tuner Liquefied ammonia, produces the ammonia of the suitable concn needed in sweetening process.
The invention have the advantage that energy-conservation, desulphurization and denitration, dedusting, reduction of discharging, cost-effective, protection environmental nonpollution.
Detailed description of the invention
A kind of desulphurization denitration dust collection method of liquefied gas for burning: the liquefied gas for burning does not do before burning at desulfurization Reason, uses excess pure oxygen combustion-supporting in liquefied gas combustion process in the burner, replace air, burning gases total amount with excess pure oxygen Minimizing 70～80%, excess pure oxygen burning, make the instantaneous rate that is effectively burned of fuel reach Up limit.
Described excessive pure oxygen refers to: supply 1.1～1.3 times of theoretical pure oxygen amounts.
Utilize temperature sensor one, control centre one, flow control valve one in the burner, control liquefied gas supply stream Amount so that ignition temperature stability contorting 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, between 850～1100 DEG C.
Give temperature 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, combustion tail gas spray between 850～1100 DEG C in denitrator Spill excess liquefied ammonia, utilize oxygen sufficient in combustion process so that the very small amount nitrogen oxides produced in combustion process is reduced to The metastable nitrogen of character.
Described excessive liquefied ammonia refers to: supply the theoretical liquefied ammonia amount of 1.1～1.3 times.
In heat exchanger, utilize combustion tail gas waste heat, heat pure oxygen, utilize temperature sensor two, control centre in heat exchanger Two, flow control valve two, control oxygen supply flow rate so that exhaust temperature stability contorting 330 DEG C, 350 DEG C, 300～380 ℃。
Devulcanizer is given temperature 330 DEG C, 350 DEG C, the tail gas of 300～380 DEG C sprays excessive ammonia, described mistake Amount ammonia refers to: supply 1.1～1.3 times of theoretical ammonia vol of complete desulfurization.
By intelligence bubble column, utilize control centre three, ammonia detection display instrument, Water flow control valve three, adjust and absorb The flow of water, reaches the ammonia target fully absorbing in tail gas；The connection on column plate of the described bubble-cap in intelligent bubble column Being the most rotatable, described bubble-cap contains dynamic rotating axle, and one end of described dynamic rotating axle is fixing to be connected or can Dismounting is connected to below column plate, and the other end of dynamic rotating axle passes bubble-cap, is then passed through the miniature lightweight over glaze above bubble-cap Hold, be then passed through pad, be topmost dismountable to be axially located by connecting lid or bubble-cap is dismountable the most fixed immediately above Position connects lid；Bubble-cap gas passage from all directions is helical form curved surface passage, the song of the curved surface of all helical form curved surface passages Rate is identical, and the direction of curved surface is identical, when gas enters liquid through curved surface passage, and the back action of generation Try hard to recommend dynamic bubble-cap to rotate, bubble-cap rotational agitation liquid motion, improve gas and the mass transfer of liquid and heat-transfer capability, improve liquid simultaneously Mass-and heat-transfer ability between body diverse location, promotes diverse location liquid mass transfer concentration and the uniformity of heat transfer temperature, on column plate The bubble-cap having projection in papula cover rotates location cylinder, and location cylinder, bubble-cap, dynamic rotating axle three axle are coaxial, location cylinder with Column plate is connected or same entirety or removably connect, and the height of location cylinder is more than the axial string momentum of bubble-cap；Overflow pipe In have rotatable turbine, at liquid during overflow pipe enters next column plate, liquid flow in overflow pipe, carries Moving turbine rotary motion, agitation liquid motion mixing, in further promotion liquid, the mixing between variable concentrations and temperature is transmitted, Improve mass transfer, heat-transfer capability；The turbine wheel outline of described turbine is circular shape, circular arc size and overflow pipe circular arc kissing Close.
Intelligence bubble column is used to absorb ammonia and the water diluent ammonia that escape ammonia produces in ammonia dilution tuner, raw Produce the ammonia of the suitable concn needed in sweetening process.

Claims (10)

1. a desulphurization denitration dust collection method for the liquefied gas for burning, is characterized in that: the liquefied gas for burning does not do and burns Front desulfurization processes, and uses excess pure oxygen combustion-supporting in liquefied gas combustion process in the burner, replaces air, burning with excess pure oxygen Gas gross minimizing 70～80%, excess pure oxygen burning, make the instantaneous rate that is effectively burned of fuel reach Up limit.
The desulphurization denitration dust collection method of the liquefied gas for burning the most according to claim 1, is characterized in that: described mistake Amount pure oxygen refers to: supply 1.1～1.3 times of theoretical pure oxygen amounts.
The desulphurization denitration dust collection method of the liquefied gas for burning the most according to claim 1, is characterized in that: at burner In utilize temperature sensor one, control centre one, flow control valve one, control liquefied gas supply flow rate so that ignition temperature is steady Fixed control 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, between 850～1100 DEG C.
The desulphurization denitration dust collection method of the liquefied gas for burning the most according to claim 1, is characterized in that: at denitrator In give temperature 880 DEG C, 950 DEG C, 1000 DEG C, 1050 DEG C, combustion tail gas between 850～1100 DEG C spray excess liquefied ammonia, profit With oxygen sufficient in combustion process so that it is metastable that the very small amount nitrogen oxides produced in combustion process is reduced to character Nitrogen.
The desulphurization denitration dust collection method of the liquefied gas for burning the most according to claim 1, is characterized in that: described mistake Amount liquefied ammonia refers to: supply the theoretical liquefied ammonia amount of 1.1～1.3 times.
The desulphurization denitration dust collection method of the liquefied gas for burning the most according to claim 1, is characterized in that: at heat exchanger In utilize combustion tail gas waste heat, heat pure oxygen, utilize temperature sensor two, control centre two, flow control valve two, control oxygen Supply flow rate so that exhaust temperature stability contorting is at 330 DEG C, 350 DEG C, 300～380 DEG C.
The desulphurization denitration dust collection method of the liquefied gas for burning the most according to claim 1, is characterized in that: at devulcanizer In give temperature 330 DEG C, 350 DEG C, the tail gas of 300～380 DEG C sprays excessive ammonia, described excessive ammonia refers to: supply 1.1～1.3 times of the theoretical ammonia vol of desulfurization completely.
The desulphurization denitration dust collection method of the liquefied gas for burning the most according to claim 1, is characterized in that: by intelligence Bubble column, utilizes control centre three, ammonia detection display instrument, Water flow control valve three, adjusts the flow absorbing water, reach complete Absorb the ammonia target in tail gas.
The desulphurization denitration dust collection method of the liquefied gas for burning the most according to claim 1, is characterized in that: dilute at ammonia Release tuner uses and intelligence bubble column absorbs ammonia and the water diluent ammonia that escape ammonia produces, produce in sweetening process and need The ammonia of the suitable concn wanted.
The desulphurization denitration dust collection method of the liquefied gas for burning the most according to claim 8, is characterized in that: described The connection on column plate of the bubble-cap in intelligence bubble column is the most rotatable, and described bubble-cap contains dynamic rotating axle, described One end of dynamic rotating axle fixing connect or be detachably connected on below column plate, the other end of dynamic rotating axle is through bubble Cover, is then passed through the miniature lightweight spherical bearing above bubble-cap, is then passed through pad, be topmost dismountable be axially located by connecting lid or Person's bubble-cap is dismountable lid that is axially located by connecting immediately above；Bubble-cap gas passage from all directions is that helical form curved surface leads to Road, the curvature of the curved surface of all helical form curved surface passages is identical, and the direction of curved surface is identical, bubble-cap above column plate The bubble-cap inside having projection rotates location cylinder, and location cylinder, bubble-cap, dynamic rotating axle three axle are coaxial, and location cylinder is solid with column plate Even or same entirety or removably connect, the height of location cylinder is more than the axial string momentum of bubble-cap；Having in overflow pipe can The turbine rotated, the turbine wheel outline of described turbine is circular shape, and circular arc size matches with overflow pipe circular arc.
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Citations (4)

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CN102759119A (en) * 2012-06-25 2012-10-31 赵军政 Efficient, energy-saving and environment-friendly boiler
CN103432876A (en) * 2013-08-21 2013-12-11 潘广松 Method for treating tail gases from kilns

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1116648A (en) * 1964-09-18 1968-06-12 Chemokomplex Vegyipari Gep Es Bubble-cap plate towers
CN102705114A (en) * 2012-06-22 2012-10-03 葛文宇 Novel method for saving energy and reducing emission by using liquid oxygen
CN102759119A (en) * 2012-06-25 2012-10-31 赵军政 Efficient, energy-saving and environment-friendly boiler
CN103432876A (en) * 2013-08-21 2013-12-11 潘广松 Method for treating tail gases from kilns

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