CN105688619A - Noxious substance removing device and method for removing noxious substances in gas flow through noxious substance removing device - Google Patents

Noxious substance removing device and method for removing noxious substances in gas flow through noxious substance removing device Download PDF

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Publication number
CN105688619A
CN105688619A CN201610156494.1A CN201610156494A CN105688619A CN 105688619 A CN105688619 A CN 105688619A CN 201610156494 A CN201610156494 A CN 201610156494A CN 105688619 A CN105688619 A CN 105688619A
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gas
nuisance
solid absorbent
power supply
cylinder
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黄立维
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Priority to CN201610156494.1A priority Critical patent/CN105688619A/en
Publication of CN105688619A publication Critical patent/CN105688619A/en
Priority to CN201710156993.5A priority patent/CN106914111B/en
Pending legal-status Critical Current

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    • 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
    • B01D53/32—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 by electrical effects other than those provided for in group B01D61/00
    • 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
    • B01D53/32—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 by electrical effects other than those provided for in group B01D61/00
    • B01D53/323—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 by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
    • 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
    • B01D53/02—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 by adsorption, e.g. preparative gas chromatography
    • B01D53/06—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 by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • 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
    • B01D53/14—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 by absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10—Inorganic absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/40—Absorbents explicitly excluding the presence of water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/50—Combinations of absorbents
    • B01D2252/504—Mixtures of two or more absorbents
    • 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
    • B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
    • 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
    • B01D2253/112—Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
    • B01D2253/1124—Metal oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/20—Halogens or halogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/818—Employing electrical discharges or the generation of a plasma

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The invention discloses a noxious substance removing device and a method for removing noxious substances in gas flow through the noxious substance removing device. The device is composed of a cylinder and a gas discharging electrode. The cylinder is composed of an upper straight cylinder body and a lower inverted cone, the gas discharging electrode is arranged in the straight cylinder body and connected with a high voltage power supply, and the cylinder body is grounded or connected with a power supply null line. A gas inlet connected with a gas pipeline is formed in the upper portion of the straight cylinder body and is further connected with a solid absorbent inlet, a purified gas outlet is formed in the lower portion of the straight cylinder body, a gas collecting hood is arranged at the lower end of the electrode inside the straight cylinder body and is communicated with the purified gas outlet through a pipeline, and a reacted solid absorbent outlet is formed in the bottom end of the lower inverted cone of the cylinder. By means of the noxious substance removing device and the method, the purpose of purifying gas can be achieved, and the utilization efficiency of energy can be improved.

Description

A kind of method of nuisance in nuisance removal device and removal air-flow thereof
(1) technical field
The present invention relates to a kind of waste gas processing method, particularly to a kind of method of nuisance in device removing nuisance from air-flow and process waste gas, including the gasified harmful substance containing fluorine, chlorine, sulfur or nitrogen element。
(2) background technology
The industrial processes such as chemistry, pharmacy and application produce various harmful gass, such as the gasified harmful substance of fluorine-containing, chlorine, sulfur or nitrogen, including Organic substance and inorganic matter。One of these pollutant are not only harmful to human body, some or carcinogen, and discharge is gone back localized region environment and created serious impact in a large number, or the reason that formed of atmospheric photochemistry mist。But these materials or water solublity are bad, high volatility or steady chemical structure, not degradable feature, bring very big difficulty to purifying。
The additive method processing above-mentioned pollutant has combustion method and absorption method etc.。But said method has the limitation of each self-application, service condition is required higher by combustion method, and general requirement operates above at 600 DEG C, and investment and running cost are high。Absorption method is higher to the pollutant removing efficiency of low concentration, but is unable to reach the purpose of resolving harmful gas, and adsorbent reactivation and aftertreatment systems are complicated。
The nonequilibrium plasma technology produced by pulsed discharge or voltolising (also known as dielectric barrier discharge) etc. is applied to waste gas pollution control and treatment, and its ultimate principle is to utilize corona discharge to produce a large amount of high energy electrons, atom and free radical。These high energy electrons, atom and free radical react with deleterious molecular and make it aoxidize or dissociate, and are eventually converted into harmless object。Present inventor had once reported employing discharge reactor and harmful exhaust had been removed experimental result, and result of study refer to reports such as " colleges and universities' Chemical Engineering journal " (2007, Vol21:689-694) such as yellow vertical dimensions。But, owing to nonequilibrium plasma chemical reaction is difficult to control, it is much reversible reaction, is easily generated new harmful substance when processing the gasified harmful substance such as chloride, fluorine, sulfur and nitrogen especially, such as COCl2With HCN etc.。Therefore, although in external, also this technology of handlebar is applied to commercial Application, but actual effect is unsatisfactory。Mainly nuisance clearance is low, degraded is incomplete and secondary pollution generation is difficult to solve。
(3) summary of the invention
It is an object of the present invention to provide the reaction unit of a kind of gasified harmful substance removing fluorine-containing, chlorine, sulfur or nitrogen from air-flow and process technique, these nuisances contained in air-flow are made to be aoxidized by gas discharge and degrade, from gas reaction, decompose out the solid absorbent absorption that harmful intermediate product is added into, after gas solid separation, reach the purpose of gas purification。
The technical solution used in the present invention is:
The present invention provides a kind of nuisance removal device, described device is made up of cylinder and gas discharge electrode, the top of described cylinder is divided into straight barrel, bottom is divided into reverse taper, the upper part straight barrel of described cylinder is internally provided with gas discharge electrode, described gas discharge electrode is connected with high voltage power supply, cylinder ground connection or connect zero-power line；Described straight barrel top is provided with the gas feed being connected with gas pipeline, described gas feed connects with the import of solid absorbent, the upper part straight barrel bottom of described cylinder is provided with gas outlet after purification, described straight barrel internal discharge electrode lower end is arranged below gas skirt, described gas skirt is connected with gas outlet after purification by pipeline, and after the bottom of described lower shell is provided with reaction, solid absorbent exports。
Further, described gas skirt is opening down, the gas skirt distance from top sparking electrode general 50mm in lower end and more than, cover gas flow velocity generally should be made less than 2.0m/s during the design of cover mouth size, in order to air-flow does not affect in cylinder gas after reaction and separates with solid absorbent。
Further, described barrel diameter 150mm, cylinder height 1300mm, straight tube height 800mm, back taper height 500mm are divided in its middle and upper part。
Further, described gas discharge electrode comprises single or many electrodes, and described many electrodes are linear type electrode wires or ring-shaped electrode line。
The present invention also provides for a kind of utilizing described nuisance removal device to remove the method for nuisance in air-flow, described method is: connected with high voltage power supply by gas discharge electrode, again the gas containing nuisance is imported from gas feed, and solid absorbent is added solid absorbent import by measuring input device, gas residence time is 5-50s, from purify after gas outlet collection process after gas, from solid absorbent outlet collect solid absorbent；The stoichiometric proportion (mol ratio, lower same) of described solid absorbent and absorbed nuisance is 10-30:1。
Further, described solid absorbent is one or more mixing in calcium hydroxide, magnesium hydroxide, calcium oxide, zinc oxide and calcium carbonate。
Further, described solid absorbent particle diameter is 20 μm-1000 μm, it is preferable that 50-400 μm。
Further, the described gas containing nuisance is concentration of harmful substance 50-450mg/m3, oxygen concentration 8% (volume, lower same), moisture concentration 10% (volume, lower same), all the other are nitrogen。
Further, in the described gas containing nuisance, add concentration 0.5%-10% argon (volume, lower same)。
The power supply mode of described high voltage power supply includes pulse power supply and Alternating Current Power Supply, wherein the voltage of pulse power supply is ± 2kV-± 200kV (preferred 40kV), pulse recurrence frequency is 2Hz-2kHz (preferred 50-1000Hz), the voltage of Alternating Current Power Supply is 2kV-200kV (preferred 40kV), and frequency is 10Hz-10kHz (preferred 50-1000Hz)。
Further, the described gas temperature containing nuisance is 20～160 DEG C。
The top of the tube structure of a kind of nuisance removal device of the present invention is divided into straight barrel, bottom is divided into reverse taper, described cylinder is generally cylindrical cross section, can also be cuboid or square, effect is about the same, the major function of described straight barrel part is to provide gas phase and gas-solid phase reaction, and reverse taper part major function is for gathering dust and dedusting。Sparking electrode of the present invention is generally round or barb type, the power supply mode of sparking electrode includes pulse and exchanges, wherein the voltage of pulse power supply is generally ± 2kV-± 200kV, positive voltage is the same with negative voltage effect, pulse recurrence frequency is general 2Hz-2kHz, the voltage of Alternating Current Power Supply is generally 2kV-200kV, and frequency is general 10Hz-10kHz。The treatment effect of different power-supplying forms is about the same, and is directly proportional to the energy of input, and processed in units tolerance energy consumption is about 2-200W h/m3, concrete relevant with the operating parameter such as clearance and gas property。Earthing pole or zero line are generally cylinder, cylinder ground connection during pulse power supply, cylinder connecting to neutral line during Alternating Current Power Supply。Electrode material is generally the conductive materials such as rustless steel, titanium, tungsten or alloy, and cylinder material is generally rustless steel, and the distance between sparking electrode and ground electrode (or zero line) is generally 10-300mm。Single or many electrodes can be arranged in reactor, concrete according to the setting of cylinder size, when general barrel diameter is less than 100mm, single sparking electrode line can be adopted to arrange along axis perpendicular, when barrel diameter is more than 100mm, many linear type electrode wires or ring-shaped electrode line can be adopted, disposed vertically or horizontally or various combination in cylinder, effect is suitable, and the distance of two adjacent sparking electrode lines can design according to operating parameters such as tube structure sizes, without particular/special requirement。
The process technique that device of the present invention removes harmful gas from air-flow is as follows: first solid sorbent particles is added in the air-flow containing harmful gas, the form that solid sorbent particles adds, solid sorbent particles metering input device can be adopted to add, may be used without the forms such as air-flow conveying, then the upper shell of described air-flow gatherer, corona discharge is produced after described gas discharge electrode connects high voltage power supply, what make to contain in air-flow is chloride, fluorine, while the harmful gas of sulfur or nitrogen is decomposed in nonequilibrium plasma reactor, from harmful gas molecule dissociation and generate such as hydrogen chloride, fluohydric acid gas, the solid sorbent particles that the acid product such as sulfur dioxide and hydrogen sulfide or intermediate product are added into absorbs, reacted solid sorbent particles is at gravity, the effect such as airflow entrainment and electrostatic force is lower simultaneously to barrel with move down, discharge finally by the solid absorbent outlet being arranged on bottom cylinder lower part bullet, air-flow after purification is discharged by gas outlet after the purification that is arranged on cylinder part straight barrel bottom。After described purification, gas outlet is made up of gas skirt and connecting tube, gas skirt is opening down, cover mouth top should below sparking electrode lower end, it is generally more than 50mm, cover mouth flow velocity generally should be made less than 2.0m/s during the design of cover mouth size, in order to air-flow does not affect gas and solid sorbent particles after reacting in cylinder and must separate。
Solid sorbent particles of the present invention can be one or its mixture of the alkaline absorbents such as calcium hydroxide, magnesium hydroxide, calcium oxide, zinc oxide and calcium carbonate, wherein it is preferred with calcium hydroxide and magnesium hydroxide, assimilation effect is about the same, is secondly calcium oxide and zinc oxide。Solid absorbent obtains stoichiometric proportion with processed nuisance and is generally 0.5:100, and absorbent granules is Powdered, and particle diameter is generally higher than 5 μm, too thin unfavorable gas solid separation, it is preferable that 50 μm-1000 μm, gas residence time is generally more than 0.5s, preferred 3-50s, the time of staying is long。Gas-solid reaction temperature is typically in room temperature, and maximum temperature is 200 DEG C, and the product after gas-solid absorption reaction easily decomposes when high temperature。
During as added the solid sorbent particles of high concentration in the gas flow, such as 30g/m3Time above, gas discharge can will be produced certain impact, now can add the noble gas of the favourable gas discharges such as argon in the gas flow, enhanced discharge effect can be played and reduce the effect of discharge voltage, and be directly proportional to addition, the concentration (volume, lower same) of the noble gases such as the argon of described addition is generally more than 0.01%。
The invention have the advantage that the present invention proposes a kind of method that nonequilibrium plasma chemical reaction absorbs in conjunction with gas on-site, namely in nonequilibrium plasma chemical reactor, add solid absorbent, synergism is reacted with gas-solid chemical absorbing by nonequilibrium plasma technology, make chloride, fluorine, while the harmful gas of sulfur and nitrogen is decomposed in nonequilibrium plasma reactor, from harmful gas molecule dissociation and generate such as hydrogen chloride, fluohydric acid gas, the acid product such as sulfur dioxide and hydrogen sulfide or intermediate product are absorbed by the solid absorbent in air-flow, removed from air-flow after gas solid separation, thus avoiding dissociation chlorine out, fluorine, sulfur and nitrogen are participated in chemical reaction again and are generated new harmful substance, guide and promote that non-equilibrium plasma chemical reaction carries out towards innoxious direction, reach the purpose of gas purification。
(4) accompanying drawing explanation
Fig. 1 is a kind of apparatus structure schematic diagram (cylinder for cylinder) removing nuisance from air-flow of the present invention, including: 1 gas feed, 2 solid absorbent imports, 3 central electrode lines, 4 cylinders, 5 sparking electrode annulus, gas outlet after 6 purifications, 7 gas skirts, 8 solid absorbent outlets。
Fig. 2 is a kind of type of attachment of the central electrode line in a kind of apparatus structure schematic diagram (Fig. 1) removing nuisance from air-flow of the present invention and sparking electrode annulus, and electric discharge round loop electrode is connected fixing with center lines of electrodes by 4 centripetal electrode wires。
(5) detailed description of the invention
Embodiment 1
Experimental provision structure is as shown in Figure 1。
Nuisance removal device of the present invention is made up of cylinder 4 and gas discharge electrode；The top of described cylinder is divided into cylinder, bottom is divided into inverted cone, described upper shell is internally provided with gas discharge electrode, described gas discharge electrode is made up of central electrode line 3 and sparking electrode annulus 5, described sparking electrode annulus horizontal circle central electrode line, connected fixing by 4 centripetal electrode wires, described gas discharge electrode is connected with high voltage power supply, cylinder ground connection or connect zero-power line (during alternating current)；Described straight barrel top is provided with the gas feed 1 being connected with gas pipeline, described gas feed also connects with solid absorbent import 2, solid sorbent particles adopts metering input device to add, the bottom of described straight barrel is provided with gas outlet 6 after purification, described straight barrel internal electrode lower end is provided with gas skirt 7, described gas skirt distance from top sparking electrode bottom 50mm, described gas skirt is connected with gas outlet after purification by pipeline, and after the bottom of described cylinder lower part reverse taper is provided with reaction, solid absorbent exports 8。
Structural parameters: gas feed and solid absorbent add inlet diameter and be Φ 25mm, barrel diameter Φ 150mm, whole cylinder height 1300mm, straight tube height 800mm is divided in its middle and upper part, lower part back taper height 500mm, purified gas outlet diameter of phi 25mm (gas skirt mouth diameter of phi 70mm), gas skirt distance from top sparking electrode bottom 50m, solid absorbent outlet diameter Φ 40mm。Central electrode line is the stainless steel round bar of diameter 5mm, sparking electrode annulus is the annulus that the stainless steel round bar of diameter 3mm becomes diameter of phi 50mm along central electrode wire-wound, annulus adopts the centripetal pole of 4 diameter 3mm to be connected with central electrode line, two adjacent ring intervals are about 50mm, totally 10, being evenly arranged mutually along axle, cylinder ground connection, cylinder and electrode material are rustless steel。
Process technique: the pending air-flow containing nuisance is imported reactor by gas feed 1, adopt metering input device to add solid absorbent by solid absorbent import 2 simultaneously, gas-solid be sufficiently mixed after air-flow import cylinder 4, apply high voltage to central electrode line 3 simultaneously, formed in cylinder and between sparking electrode annulus 5 and cylinder, produce gas discharge corona, form plasma chemical reaction district, in reaction zone, chloride in air-flow, fluorine, while the harmful gas of sulfur and nitrogen is decomposed, from harmful gas molecule dissociation and generate such as hydrogen chloride, fluohydric acid gas, the acid product such as sulfur dioxide and hydrogen sulfide or intermediate product are absorbed by the solid absorbent in air-flow, air-flow after purification is discharged by gas outlet 6 after purifying, reacted solid absorbent moves to solid absorbent outlet 8 along the lower part cone inwall of cylinder and discharges, thus reaching the purpose of gas purification。
Experiment condition is:
Gas flow: 3m3/ h, gas time of staying in device is about 8s, and gas flow is air, and gas flow temperature is 25 DEG C, relative humidity about 60%。
Absorbent: solid calcium hydroxide granule, particle diameter 50-200 μm, is 20:1 with the nonstoichiometric molar ratio of nuisance。
Power parameter: pulse voltage 40kV, pulse frequency 150Hz, input energy is about 30-40W h/m3。Experimental result is as shown in table 1。
Table 1 nuisance removal effect
After adding 0.5% argon (volume, lower same) in the gas flow, when reaching same removing effect, pulse voltage can be reduced to about 37kV, after adding 10% argon, when reaching same removing effect, pulse voltage can be reduced to about 35kV
Embodiment 2
Experimental provision is with embodiment 1。
Experiment condition is:
Gas flow: about 6-7m3/ h, gas time of staying in device is about 3-4s。
Absorbent: calcium oxide particle, particle diameter is about 200-400 μm, is 30:1 with the nonstoichiometric molar ratio of nuisance。
Power parameter: alternating current, voltage 40kV, frequency 1000Hz。Input energy is about 50-60W h/m3。
Other experiment conditions are with embodiment 1。Experimental result is as shown in table 2。
Table 2 nuisance removal effect
After adding 5% argon in the gas flow, when reaching same removing effect, voltage can be reduced to about 37kV。
Embodiment 3
Experimental provision structure is as shown in Figure 1。The difference is that sparking electrode adopts a central electrode line, discharge off round loop electrode and associated wiring。
Structural parameters: gas feed and solid absorbent add inlet diameter and be Φ 25mm, barrel diameter 80mm, upper part straight barrel height 900mm, lower part back taper height 400mm, purified gas outlet diameter of phi 25mm (gas skirt cover mouth diameter of phi 40mm), gas skirt distance from top sparking electrode bottom 50m, solid absorbent outlet diameter Φ 32mm。Central electrode line is the stainless steel round bar of diameter 3mm, and effective discharge length is about 750mm, cylinder ground connection, and cylinder and electrode material are rustless steel。
Experiment condition is:
Gas flow: 1m3/ h, gas time of staying in device is about 16s, gas flow temperature respectively 120 DEG C
Absorbent: solid calcium hydroxide granule, particle diameter is about 20-200 μm, and the stoichiometric proportion (mole) of addition and nuisance is 10:1。
Power parameter: pulse voltage 40kV, pulse frequency 50Hz, input energy is about 15-35W h/m3。
Other are with embodiment 1。Experimental result is as shown in table 3。
Table 3 nuisance removal effect
Should be noted that above example is merely to illustrate technical scheme, protection scope of the present invention is not limited to this。For a person skilled in the art; all within the spirit and principles in the present invention; technical scheme described in each embodiment is modified, or portion of techniques feature therein is carried out any equivalent replacement, amendment, changes and improvements etc., should be included within protection scope of the present invention。

Claims (10)

1. a nuisance removal device, it is characterized in that described device is made up of cylinder and gas discharge electrode, described cylinder is made up of upper part straight barrel and lower part reverse taper, described straight barrel is internally provided with gas discharge electrode, described gas discharge electrode is connected with high voltage power supply, cylinder ground connection or connect zero-power line；Described straight barrel top is provided with the gas feed being connected with gas pipeline, described gas feed also connects with solid absorbent import, the bottom of described straight barrel is provided with gas outlet after purification, described straight barrel internal electrode lower end is provided with gas skirt, described gas skirt is connected with gas outlet after purification by pipeline, and after the bottom of described cylinder lower part reverse taper is provided with reaction, solid absorbent exports。
2. nuisance removal device as claimed in claim 1, it is characterised in that described gas skirt is opening down, and cover mouth flow velocity is less than 2.0m/s。
3. nuisance removal device as claimed in claim 1, it is characterised in that described barrel diameter 150mm, straight tube height 800mm, back taper height 500mm。
4. nuisance removal device as claimed in claim 1, it is characterised in that described gas discharge electrode comprises single or many electrodes, and described many electrodes are linear type electrode wires or ring-shaped electrode line。
5. one kind utilizes nuisance removal device described in claim 1 to remove the method for nuisance in air-flow, it is characterized in that described method is: connected with high voltage power supply by gas discharge electrode, again the gas containing nuisance is inputted from gas feed, and solid absorbent is joined solid absorbent import, gas residence time is 3-50s, from purify after gas outlet collection process after gas, from solid absorbent outlet collect solid absorbent；The ratio of described solid absorbent and the amount of substance of nuisance is 10-20:1。
6. method as claimed in claim 5, it is characterised in that described solid absorbent is one or more mixing in calcium hydroxide, magnesium hydroxide, calcium oxide, zinc oxide and calcium carbonate。
7. method as claimed in claim 5, it is characterised in that described solid absorbent particle diameter is 20 μm-1000 μm。
8. method as claimed in claim 5, it is characterized in that the power supply mode of described high voltage power supply includes pulse power supply and Alternating Current Power Supply, wherein the voltage of pulse power supply is ± 2kV-± 200kV, pulse recurrence frequency is 2Hz-2kHz, the voltage of Alternating Current Power Supply is 2kV-200kV, and frequency is 10Hz-10kHz。
9. method as claimed in claim 5, it is characterized in that adding volumetric concentration in the described gas containing nuisance is 0.5%-10% argon。
10. method as claimed in claim 5, it is characterised in that the described gas temperature containing nuisance is 20～160 DEG C。
CN201610156494.1A 2016-03-18 2016-03-18 Noxious substance removing device and method for removing noxious substances in gas flow through noxious substance removing device Pending CN105688619A (en)

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CN201610156494.1A CN105688619A (en) 2016-03-18 2016-03-18 Noxious substance removing device and method for removing noxious substances in gas flow through noxious substance removing device
CN201710156993.5A CN106914111B (en) 2016-03-18 2017-03-16 Harmful substance removing device and method for removing harmful substances in airflow

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106914111A (en) * 2016-03-18 2017-07-04 浙江工业大学 A kind of method of nuisance in nuisance removal device and its removal air-flow
CN107051182A (en) * 2016-03-18 2017-08-18 浙江工业大学 A kind of nitrogen oxides removal device and its method for removing nitrogen oxides in air-flow

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CN103463944B (en) * 2013-09-22 2015-09-30 山东大学 A kind of electrostatic works in coordination with method for removing pollutant and device
CN105797571A (en) * 2016-03-18 2016-07-27 浙江工业大学 Nitrogen oxide removing device and method for removing nitrogen oxide in air flow thereof
CN105688650B (en) * 2016-03-18 2018-08-24 浙江工业大学 A kind of method of sulfur dioxide in sulphur dioxide removal device and its removal air-flow
CN105688619A (en) * 2016-03-18 2016-06-22 浙江工业大学 Noxious substance removing device and method for removing noxious substances in gas flow through noxious substance removing device

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Publication number Priority date Publication date Assignee Title
CN106914111A (en) * 2016-03-18 2017-07-04 浙江工业大学 A kind of method of nuisance in nuisance removal device and its removal air-flow
CN107051182A (en) * 2016-03-18 2017-08-18 浙江工业大学 A kind of nitrogen oxides removal device and its method for removing nitrogen oxides in air-flow

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Application publication date: 20160622