CN1279121A - Efficient clarifier for dust fume - Google Patents
Efficient clarifier for dust fume Download PDFInfo
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- CN1279121A CN1279121A CN 99109300 CN99109300A CN1279121A CN 1279121 A CN1279121 A CN 1279121A CN 99109300 CN99109300 CN 99109300 CN 99109300 A CN99109300 A CN 99109300A CN 1279121 A CN1279121 A CN 1279121A
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Abstract
An efficient clarifier for dust fume features use of cyclone-type gravitational dusting technique, catalytic adsorption technique with catalyzing bed and catalyst, corona dusting technique, catalytic dusting technique and ozone-ionizing dusting technique to treat the pollution generated by coal burning equipment. It can reduce the pollutants in dust fume, such as SO2, CO, NOx, hydrocarbons and excess CO2, and to clarify the treated tail gas.
Description
A kind of efficient clarifier for dust fume of the present invention belongs to the atmospheric environment protection class and administers the product that pollutes.Particularly at the various burners of making fuel with coal; The pollutants such as smoke exhaust that produced, the purifier that carries out the comprehensive regulation.
In recent years, along with the high speed development of China's modernization of industry process, make national economy that huge variation has taken place really on the one hand.But the environment of also depending on for existence to us has caused serious destruction on the other hand, we can say that we are at the cost of the environment, exchange very limited economic development for.If we let alone this way, so otherwise what year, we will lose the earth atmosphere environment that we depend on for existence.Believe that nobody is ready to see this day.According to incompletely statistics, China every year is discharged into harmful flue dust in the atmosphere up to 2,800 ten thousand tons because of coal-fired, accounts for 78% of flue dust total release, sulfur dioxide SO
2Discharge capacity up to 1,400 ten thousand tons, account for sulfur dioxide SO
285% of total release.Add carbon monoxide CO, nitrogen oxide NO
x, noxious pollutant such as hydro carbons a large amount of dischargings.Now caused global compound air environmental pollution.The smog episode of world-famous early stage London, the photochemical fog incident of U.S. network Shan Ji, and occur in Japanese asthma accidents on the four etc. in recent years, all use coal to make fuel in a large number, and the atmosphere pollution that causes have necessary relation with industrialized production.Because the industry of countries in the world and life are mostly used as the first-selected energy in a large number with fire coal, therefore more and more outstanding to the destructiveness of atmospheric environment, the consequence that causes is also more and more serious.The particularly frequent in recent years Ai Erninuo phenomenon that occurs and the La Nina phenomenon and the greenhouse effects that just occur recently, artificial destructive factors such as ozone hole appear on a large scale in the South Pole, to develop into global weather disaster.China is one of more serious country of atmosphere pollution, and natural ecological environment is relatively fragile again, if therefore environmental pollution can not get control.So, we just can not have the prerequisite of sustained economic development.The result shows according to correlation study, and atmosphere pollution appears in the city of China more than 90 percent, also all as the energy necessary relation is arranged with fire coal.Only manage in recent years, though taked some control measures, its aggregate level also lags far behind the high level of people to the environment an urgent demand." green grass or young crops is bright and beautiful on the mountain " remains the tidemark of our control atmosphere pollution.At present, for the air contaminant treatment method that coal-burning installation produced, be divided into moisture film wet dedusting spray cleaning method substantially on the market, high-pressure electrostatic precipitation method and gravity depositing dust method.There is following shortcoming in above-mentioned pollution control method when administering pollution that caused by coal burning: when 1. the water wet method is worked, need to use a large amount of water, this is concerning the country that our such water resource lacks relatively, and practicality is restricted, and finally also can cause secondary pollution.2. water wet dedusting equipment inefficiency, the removing exhaust gas effect is lower, and service life of equipment is shorter.3. high-pressure electrostatic precipitation method power consumption is too big, and the operating efficiency instability, and the waste gas in the flue dust is felt simply helpless.4. gravity depositing dust method efficiency of dust collection is very limited, and general for the soot dust granule less than 100nm, gravity depositing dust method is helpless, and gravity depositing dust method is hopeless for the waste gas pollution control and treatment in the flue dust.The method that above-mentioned improvement is polluted does not fundamentally solve sulfur dioxide SO in the smoke exhaust
2, carbon monoxide CO, nitrogen oxide NO
x, multiple pernicious gas such as hydro carbons is to the pollution that atmospheric environment caused, thereby impel the harmful exhaust of a great deal of just all to enter in the atmosphere without purification treatment, therefore the pollution to atmospheric environment is very serious.
The objective of the invention is to provide a kind of efficient clarifier for dust fume to utilize cyclone type gravitational dust collection technology, catalytic bed catalyst adsorption and purification technology, corona udst separation technology, catalysis udst separation technology and ionization ozone udst separation technology etc. are carried out the omnibearing comprehensive regulation to the coal-burning installation produced pollution.This device can be effectively to the sulfur dioxide SO in the smoke exhaust
2, carbon monoxide CO, nitrogen oxide NO
x, hydrocarbon compound, and excess carbon dioxide CO
2Nuisance Deng atmosphere pollution carries out omnibearing purification treatment, and can make the tail gas behind the purification treatment, reaches nuisanceless discharging.
The object of the present invention is achieved like this: at first at the discharging mouth place of a coal-burning boiler 1, install a flue abutted flange 2, smoke evacuation tube 3 is connected with preceding effect clarifier 4, before installing a cylinder type, the outer top of preceding effect clarifier imitates catalytic cleaner 5 then, and catalytic cleaner is connected with middle effect clarifier 7 by smoke evacuation tube 6 again, and then be connected with ionization ozone generator 9 with aftereffect cylinder type catalytic cleaner by smoke evacuation tube 8.Connect air-introduced machine 10 at last again and ultimate smoke evacuation chimney 11 promptly assembles whole clarifier for dust fume.When coal-burning boiler 1 is started working, at first to connect the working power of a complete set of purifier and start air-introduced machine 10, at this moment whole purifier just begins to carry out work.At this moment, whole purifier is owing to be subjected to the effect of air-introduced machine 10 attractions, after before smoke exhaust is introduced smoke exhaust by the smoke evacuation tube 3 on the abutted flange 2, imitating in the clarifier 4, imitate the cyclone type gravitational dust collection district in the clarifier before being arranged on, catalytic bed catalysis adsorption cleaning district and corona udst separation district carry out purified treatment with regard to beginning to the smoke exhaust of high concentration, remove the bigger sulfur dioxide SO of particle bigger in the flue dust and concentration
2, carbon monoxide CO, nitrogen oxide NO
x, noxious pollutant such as hydro carbons.Before can entering, smoke exhaust after preceding effect clarifier 4 is handled imitates the catalytic decomposition purified treatment of carrying out smoke exhaust in the catalytic cleaner 5.Since very high from the temperature of boiler, will impel the multiple noxious pollutant in the waste gas to be catalyzed into carbon dioxide CO by the active material in the catalyst
2, water H
2O and nitrogen.Smoke exhaust after preceding effect catalytic cleaner 5 is handled is imitated in the clarifier 7 in also can being introduced by smoke evacuation tube 6, carries out and preceding effect clarifier 4 identical smoke eliminations, dedusting, purified treatment.Impel the concentration of smoke exhaust to be reduced within the lower scope.Before smoke exhaust is carried out, imitate, after the middle effect purified treatment, owing to continue to be subjected to the attraction force acts of air-introduced machine, smoke evacuation tube 8 is introduced smoke exhaust in aftereffect catalytic cleaner and the ionization ozone generator 9 again, carry out the purified treatment of waste gas once more, utilize the effect of catalyst purification and the oxidation of ozone energy, decomposition, the multiple harmful exhaust of neutralization, with small flue dust, harmful tail gas of low content reaches the purpose of nuisanceless discharging behind purification treatment.Tail gas after will being purified by air-introduced machine 10 is more at last introduced in the ultimate smoke evacuation chimney 11, and realizes nuisanceless discharging.Its whole purifying step is: coal-burning installation → gravity depositing dust → catalysis absorption → electric precipitation → catalysis → gravity depositing dust → catalysis absorption → electric precipitation → catalysis → ionization → air inducing → exhaust.
Technical characterictic of the present invention is: this a kind of efficient clarifier for dust fume mainly is by preceding effect clarifier , preceding effect catalytic cleaner
, middle effect clarifier 20 and aftereffect catalytic cleaner 22 and aftereffect ionization ozone generator
Five purification portion branch compositions.And be respectively arranged with cyclone type gravity depositing dust district, catalytic bed 15 and corona dust removing purifier 16 in preceding effect clarifier and the middle effect clarifier 20.In addition, preceding effect catalytic cleaner
With aftereffect catalytic cleaner 22, basic identical on the structure, but the purposes of inner ceramic honeycomb catalyst piece is different.The preceding catalytic cleaner of imitating
Interior ceramic honeycomb catalyst piece is a high temperature catalyst, and the ceramic honeycomb catalyst pieces in the aftereffect catalytic cleaner 22 are middle low temperature catalyst.The corona dust removing purifier 16 of .20 before above-mentioned, in the middle effect clarifier, employed operating voltage are 220V and the corona output voltage is 3-5 ten thousand V.Aftereffect ionization ozone generator
Employed operating voltage is 220V, and output voltage is 3-5 ten thousand V.
The present invention has following advantage compared with prior art: 1. this efficient clarifier for dust fume, volume is little, in light weight, rational in infrastructure have multiple functions such as smoke elimination, dedusting, desulfurizing and purifying and also clean-up effect obvious, do not produce secondary pollution.2. this efficient clarifier for dust fume collection cyclone type gravity depositing dust method, the multiple methods of purification such as catalytic bed catalysis absorption method, corona udst separation method, catalytic purification method, ionization ozone purification method, therefore clean-up effect is secure, but and long time continuous working, it is moderate to purify cost.3. this clarifier for dust fume is reasonable in design, and is easy to install, just change easy to maintenance, processing ease, practical.4. this clarifier for dust fume gets final product effective purified treatment; In the flue dust greater than various metals or the nonmetallic particle of 100nm, and effectively in the purified treatment flue dust less than the soot dust granule thing of 100nm.Simultaneously can also be to the sulfur dioxide SO of smoke exhaust middle and high concentration
2, carbon monoxide CO, nitrogen oxide NO
x, pernicious gas pollutant such as hydro carbons, implement the more efficiently comprehensive comprehensive regulation, and make the tail gas behind the purification treatment can reach nuisanceless discharging.
Below in conjunction with Figure of description of the present invention and embodiment, a kind of efficient clarifier for dust fume of the present invention is done further detailed description.
Figure of description (one) is the purification job step schematic diagram of a kind of efficient clarifier for dust fume of the present invention.
Figure of description (two) is the horizontal layout work schematic diagram of purifier of the present invention.
Figure of description (three) is the facade dissection work schematic diagram of purifier of the present invention.
Figure of description (four) is the facade dissection work schematic diagram of the preceding effect clarifier of purifier of the present invention.
Figure of description (five)
It is the preceding effect catalytic cleaner of purifier of the present invention
Facade dissection work schematic diagram.
Figure of description (six)
It is the aftereffect ionization ozone generator of purifier of the present invention
Facade dissection work schematic diagram.
Figure of description (one) is the purification job step of purifier of the present invention Rapid signal, its whole purifying step is followed successively by: coal-burning installation → gravity depositing dust → catalytic adsorption → electric precipitation → catalysis → gravity depositing dust → catalytic adsorption → electricity Dedusting → catalysis → ionization → air inducing → exhaust. Above-mentioned purifying step is in reality Can be regarded as coal-burning installation during work is that coal-burning boiler → gravity depositing dust is for executing wind Formula gravity depositing dust → catalytic adsorption is catalytic bed catalytic adsorption purifying and dedusting → electricity Dedusting is that corona purifying and dedusting → catalysis is that the catalysis of ceramic honeycomb catalyst piece is clean Change → ionization is that ionization ozone purification → air inducing is that air-introduced machine air inducing → exhaust is Ultimate discharging.
In the Figure of description (two) 1 is coal-burning installation, the 2nd, and chimney pair Acting flange, the 3rd, smoke evacuation tube, the 4th, front effect clarifier, the 5th, front effect catalysis Clarifier, the 6th, the smoke evacuation tube, the 7th, middle effect clarifier, the 8th, the smoke evacuation tube, The 9th, aftereffect catalytic cleaner and ionization ozone generator, 1O is air-introduced machine, The 11st, ultimate chimney.
In the Figure of description (three) 12 is coal-burning boilers, the 13rd, and the smoke evacuation tube, is front effect clarifier, the 15th, catalytic bed, the 16th, the corona dust removing purifier,
Front effect catalytic cleaner, the 18th, abutted flange, the 19th, the smoke evacuation tube, the 20th, middle effect clarifier, the 21st, the smoke evacuation tube, the 22nd, the aftereffect catalytic cleaner,
Aftereffect ionization ozone generator, the 24th, go out the dirt tube, the 25th, the smoke evacuation tube, The 26th, air-introduced machine, the 27th, ultimate chimney.
Among Figure of description (four) 28 is abutted flanges, the 29th, and electricity The high-field electrode anode of dizzy dust removing purifier, the 30th, the corona dust removing purifier Electrode cathode, the 31st, the smoke evacuation tube, the 32nd, the spheric catalyst on the catalytic bed, The 33rd, the stainless steel wide-meshed screen base plate of catalytic bed, the 34th, wind deflector, the 35th, advance The cigarette chimney, the 36th, the metal shell of front effect clarifier, the 37th, clarifier bottom Infundibulate deposit ash place. The 38th, emit grey switch. The 39th, the ash discharge tube.
Figure of description (five)
In the catalytic cleaner 40 is smoke evacuation tubes, The 41st, abutted flange, the 42nd, flue gas surge chamber, the 43rd, the gold of catalytic cleaner Belong to shell, the 44th, ceramic honeycomb catalyst piece, the 45th, flue gas surge chamber, 46 Abutted flange, the 47th, smoke-input tube.
Figure of description (six)
In the ionization ozone generator 48 is flues, the 49th, and abutted flange, the 50th, flue gas surge chamber, the 51st, the positive pole of ionization ozone generator high voltage source lead.The 52nd, the high pressure positive electricity electrode of ionization ozone generator, the 53rd, the high pressure negative electricity electrode of ionization ozone generator, the 54th, the metal shell of ionization ozone generator, the 55th, the negative pole of the high voltage source lead of ionization ozone generator, the 56th, abutted flange, the 57th, smoke-input tube.
By Figure of description (), (two), (three), (four) , (five)
, (six)
As can be known, whole fume and exhaust gas purifying step is substantially: coal-burning installation → gravity depositing dust → catalysis absorption → electric precipitation → catalysis → gravity depositing dust → catalysis absorption → electric precipitation → catalysis → ionization → air inducing → exhaust.Promptly arrange a whole set of purifier according to purifying step, installation abutted flange 2. at first is set at the outlet flue place of coal-burning installation 1.12 docks smoke evacuation tube 3.13 again with preceding effect clarifier 4. , and then on the top of preceding effect clarifier by abutted flange 18, imitate catalytic cleaner 5. before installing
With smoke evacuation tube 6.19; And link with middle effect clarifier 7.20 again.Afterwards, 8.21 smoke evacuation tubes connect by abutted flange and middle effect clarifier 7.20 and aftereffect catalytic cleaner 9.22.At last again with aftereffect ionization ozone generator
Realize and an aftereffect catalytic cleaner 22 and smoke evacuation 25 docks by two abutted flanges up and down.Again air-introduced machine 1O.26 and smoke evacuation tins 25 are connected with ultimate smoke evacuation cigarette 11.27 simultaneously and connect the power line of all consuming parts; Promptly finish the layout and the installation of whole purifier, at this moment a whole set of purifier just can carry out the purified treatment of smoke exhaust.Before being introduced by 3.1 3 smoke evacuation tubes, the smoke exhaust that is produced from coal-burning installation 1.12 imitates in clarifier 4. , when carrying out the purification of smoke exhaust, because suction from air-introduced machine 10.26, the primary air of smoke exhaust can be along the inner round wall of preceding effect clarifier 4. , do the cyclone type motion, and make on the interior centre of its clarifier, form a vortex relatively stably, impel particle bigger in the flue dust to assemble at this, last under the effect of own wt, fall in the ash fall district, bottom that sinks to clarifier.Meanwhile, the part smoke exhaust is owing to continue to be subjected to the suction of air-introduced machine, carries out catalysis absorption smoke abatement and dust control purified treatment and enter in the catalytic bed 5 on clarifier top, further removes part particle in the flue dust and catalysis and falls sulfur dioxide SO in the waste gas
2, carbon monoxide CO, nitrogen oxide NO
x, harmful exhaust such as hydro carbons.Simultaneously, be arranged on the corona dust removing purifier 16 of clarifier 4. inner tops, owing to be subjected to the effect of high voltage electric field, also begin smoke exhaust is carried out purified treatment, impel less metal of some volume weights or non-metallic particle thing, can become trapped in the corona field district becomes the bigger particle of volume weight gradually on the collecting plate, last depositing dust again is in the ash fall district of clarifier 4. bottoms.After most of smoke exhaust before entering in the effect clarifier is carried out the smoke abatement and dust control purified treatment, can continue to be subjected to the suction of air-introduced machine again, enter catalytic cleaner 5.
In carry out smoke exhaust catalytic purification handle, the catalyst block in this catalytic cleaner is the ceramic honey comb structure, surface area is about 20 square metres, the various active component in the catalyst can be effectively to the sulfur dioxide SO in the flue dust
2, carbon monoxide CO, nitrogen oxide NO
x, pernicious gas such as hydro carbons carries out catalysis, oxidation, decomposition, neutralization reaction, makes that the waste gas after the catalysis changes into carbon dioxide Co
2, water H
2O and nitrogen.The smoke exhaust that cross through preceding effect clarifier 4. and preceding effect catalytic cleaner purified treatment this moment, reduction and the minimizing greatly of its concentration.In order further to improve clean-up effect, the smoke exhaust that has not purified also can continue to be subjected to the effect of air-introduced machine suction, imitates in the clarifier 7.20 in entering and carries out the identical smoke abatement and dust control purified treatment with preceding effect clarifier 4. .Be that cyclone type gravity depositing dust purifies catalytic bed catalysis adsorption cleaning and corona udst separation.The ash fall district that forces lighter relatively minute metallic of volume weight in the flue dust and non-metallic particle to become trapped in clarifier, and make the multiple content of harmful gas concentration in the flue gas more still less low.Last again that concentration is lighter smoke exhaust is introduced aftereffect catalytic cleaner 9.22 and aftereffect ionization ozone generator by the effect of air-introduced machine
In carry out once more that catalytic purification is handled and ionization ozone oxidation, decomposition, neutralisation treatment, force flue dust and sulfur dioxide SO in the tail gas
2, carbon monoxide CO, nitrogen oxide NO
x, noxious pollutant such as hydro carbons content reduce to minimum limit, reach the purpose that purifies smoke exhaust.Tail gas after purified treatment is sent into by air-introduced machine 10.26 and is realized nuisanceless discharging in the ultimate smoke evacuation chimney 11.27.The employed working power of corona dust removing purifier in preceding effect clarifier Figure of description (four) in this a kind of efficient clarifier for dust fume is 220V and the corona output voltage is ten thousand volts of high-tension electricities of 3-5 in addition.Wherein the distance of the workplace between the electrode cathode 30 of the high-field electrode anode 29 of corona dust removing purifier and corona dust removing purifier is 10-15Cm, and anode should be installed in, negative electrode is installed in down, and must make corona anode, negative electrode and clarifier do the insulation processing, eliminates leaky.Moreover the ball shape catalyst in the clarifier catalytic bed 32 is alveolate texture, and the ball-type diameter is 10-15Cm, and lay thickness is two layers of about 20-30Cm.The preparation method of its ball-type honeycombed catalyst is: earlier with the weighing and proportioning according to a certain percentage of the active constituent Ca-ma-mn-Ti-Ox in the catalyst, i.e. and the CaO of 60-80%, the mgO of 5-10%, the mnO of 5-15%, the TiO of 10-15%
2, again with 30% AI of above-mentioned each component weight sum
2O
3Or 30% Fe
2O
3Mix, send in the agitator and stir fully.After material to be mixed stirs, add the water of 5-10% again, and stir fully once more.Then with the compound that stirs, send in the mould again and be pressed.The semi-finished product that suppress are sent in the drying oven and are dried.In sending into sintering furnace, carry out activated sintering at last.Sintering temperature should be controlled at 1000 ℃.Obtain finished product ball-type honeycombed catalyst 32 after about three hours immediately.In addition, the catalytic cleaner (five) in this a kind of efficient clarifier for dust fume
In catalyst be the ceramic honeycomb catalyst piece.Active constituent in the catalyst is La-Cu-Co-Ni-Zr-Ce-Ti-Mg-Ca-Ox.The preparation method of its ceramic honeycomb catalyst piece is such: at first with Ai
2O
3With the ceramic raw material for preparing be Ai by weight ratio
2O
370-85%, ceramic raw material 15-30%, and the raw material of working good stirred fully, add the water of 5-15% then, stir once more.The raw material that stirs is sent in the mould again, carries out punch forming.Making ceramic honeycomb catalyst piece after the punch forming be diameter is 50-70cm, the cylindrical structural body of long 60-80cm, and it all is provided with 400-500 the straight hole that diameter is 1.5-2.5cm that connects on two circular flats up and down.And then the ceramic honeycomb catalyst piece semi-finished product after the moulding are sent into carry out drying and shaping in the drying plant, the dried semi-finished product of finalizing the design just can be sent into and carry out high temperature sintering in the sintering furnace.Sintering temperature should be controlled at 11OO ℃-1300 ℃, and sintering time should be controlled in 2.5-5 hour and finish, and the ceramic honey comb that sinters promptly becomes the carrier of catalyst.The raw material that to make catalyst then is a La-Cu-Co-Ni-Zr-Ce-Ti-Mg-Ca-Ox weighing and proportioning by weight, is followed successively by La
2O
31-2%, CuO5-10%, CoO0.5-1.5%, NiO5-10%, ZrO
22-3%, CeO
21-3%, TiO
23-5%, MgO1-2%, CaO1-2%.The Ai that adds 60-80% again
2O
3, and it will be stirred after mixing fully, and then add a certain amount of aqueous solution, stir fully once more simultaneously, make the solution after the stirring have certain viscosity.The carrier for ceramic honeycomb catalyst that at this moment will prepare again immerses in the above-mentioned catalyst solution that modulates and carries out immersion plating, make liquid catalyst evenly firm attached on the carrier for ceramic honeycomb catalyst, and then ceramic honeycomb catalyst piece that will immersion plating is good is sent in the drying plant and is dried.Dried ceramic honeycomb catalyst piece just can be sent into and carry out sintering in the sintering furnace, and sintering temperature should be controlled at 700-1100 ℃, and sintering time should be controlled in 2-4% hour and finish, and whole sintering process is oxygenation activated sintering.Should cool off the back after sintering is ceased fire naturally takes out.So promptly obtain ceramic honeycomb catalyst piece finished product.Need only during use it is installed in catalytic cleaner
Interior getting final product.The preceding catalytic cleaner of imitating
Identical with aftereffect catalytic cleaner 22 its structures, different is preceding effect catalytic cleaner
Be the high-temperature catalytic clarifier, and aftereffect catalytic cleaner 22 be in low-temperature catalyzed clarifier, its catalyst activity component is also different.The catalyst activity component of aftereffect catalytic cleaner 22 is Ce-Cu-La-Ca-Ni-Mg-Ox.Proportioning weight is followed successively by CeO
22-3%, CuO 5-10%, La
2O
31-3%, CaO 3-5%, NiO 5-10%, Mgo 2-4%, its surplus is Ai
2O
3Or Fe
2O
3Preparation method and above-mentioned preceding ceramic honeycomb catalyst piece of imitating in the catalytic cleaner are identical.Figure of description (six)
Its work input voltage of ionization device in the ionization ozone generator is 220V, and output voltage is 3-5 ten thousand V high pressure.End in the ionization ozone generator is the high pressure positive electricity electrode 52 of ionization ozone generator, and the other end is the high pressure negative electricity electrode 53 of ionization ozone generator, all is coated with precious metal palladium Pd, platinum Pt, rhodium Rh on the positive and negative electrode.Spacing between the positive and negative electrode is 1.5-2.5cm.Efficiency purification apparatus is carrying out can producing a lot of steam and water in the decontamination process in before considering to smoke exhaust; therefore when the positive and negative electrode of ionization ozone generator is installed; must note insulation protection, prevent the generation of strong induced-current and leaky.The ionization ozone generator
Positive and negative electrode power lead 51.55 be ten thousand volts of high pressure resistant power leads of 5-10.Conductor length should reduce the loss of avoiding power as far as possible, and all electricity consumptions and non-electric device all must be provided with earth connection.Guarantee the equipment security of operation.
Embodiment
Select 4 tons of coal-burning boilers of a tame chemical enterprise, carry out the smoke exhaust comprehensive regulation.And this boiler present situation pollution condition monitored sulfur monoxide SO wherein on the spot
2Per hour discharge capacity is higher than 85 percentage points of national standards, and carbon monoxide CO discharge capacity hourly is higher than 79 percentage points of national standards.Carbon dioxide CO
2Per hour discharge capacity is higher than 60 percentage points of national standards.Nitrogen oxide NO
x(be converted into NO
2) per hour discharge capacity be higher than 42 percentage points of national standards.Flue dust discharge capacity hourly is higher than 86 percentage points of national standards, and maximum lingemann blackness is 3 grades.Maximum dust concentration is up to 3000mg/m
3More than the N.A kind of efficient clarifier for dust fume be will invent then, smoke evacuation tube 13, preceding effect clarifier , catalytic bed 15, corona dust removing purifier 16, preceding effect catalytic cleaner installed successively according to designing requirement
Abutted flange 18, smoke evacuation tube 19, middle effect clarifier 20, smoke evacuation tube 21, aftereffect catalytic cleaner 22, ionization ozone generator
, smoke evacuation tube 25, the ultimate smoke evacuation chimney 27 of air-introduced machine 26 and 30 meters high is connected the high-field electrode lead of corona dust removing purifier 16, ionization ozone generator at last again
The high-tension electricity lead and the power line of air-introduced machine.And connect power supply and can start whole purifier, and make it enter duty.When this purifier operate as normal after a few hours, this boiler smoke toxic emission is monitored on the spot, wherein sulfur dioxide SO
2Discharge capacity hourly has reduced to 1.5Kg, and purifying rate is 98%, and carbon monoxide CO is discharge capacity≤1.3kg per hour, and purifying rate is 98%, nitrogen oxide NO
x(be converted into NO
2) discharge capacity≤1kg hourly, purifying rate is 97%, and flue dust discharge capacity≤3kg hourly, purifying rate are 98%, and lingemann blackness is 0 grade, and dust concentration is 60mg/m
3N, clean-up effect are very obvious.After this purifier work to 1000 hour, this is installed every decontamination index monitor on the spot once more.The result proves, its clean-up effect is basic identical during with installment work just.Shutdown inspection does not have discovering device to have to leak out, leak dirt, leaky yet.When checking catalytic cleaner, do not find that catalyst block has damaged situation yet.A complete set of purifier is in normal operating conditions basically.
Claims (5)
- A kind of efficient clarifier for dust fume of the present invention is characterised in that: 1. this a kind of efficient clarifier for dust fume mainly is by preceding effect clarifier , preceding effect catalytic cleaner , middle effect clarifier 20 and aftereffect catalytic cleaner 22 and aftereffect ionization ozone generator Five purification portion branch compositions.And be respectively arranged with cyclone type gravity depositing dust district, catalytic bed 15 and corona dust removing purifier 16 in preceding effect clarifier and the middle effect clarifier 20.In addition, preceding effect catalytic cleanerWith aftereffect catalytic cleaner 22, basic identical on the structure, but the purposes of inner ceramic honeycomb catalyst piece is different.The preceding catalytic cleaner of imitating
Interior ceramic honeycomb catalyst piece is a high temperature catalyst, and the ceramic honeycomb catalyst pieces in the aftereffect catalytic cleaner 22 are middle low temperature catalyst.The corona dust removing purifier 16 of .20 before above-mentioned, in the middle effect clarifier, employed operating voltage are 220V and the corona output voltage is 3-5 ten thousand V.Aftereffect ionization ozone generator Employed operating voltage is 220V, and output voltage is 3-5 ten thousand V.
- 2. it is characterized in that according to a kind of efficient clarifier for dust fume described in claims 1: clarifier is imitated in front and back, and the catalyst 32 in the 20 interior catalytic beds is the ball-type alveolate texture, and ball-type diameter 10-15cm, lay thickness are two layers of about 20-30cm.The preparation method of its ball-type honeycombed catalyst is: earlier with the weighing and proportioning according to a certain percentage of the active constituent Ca-ma-mn-Ti-Ox in the catalyst, i.e. and the CaO of 60-80%, the mgO of 5-10%, the mnO of 5-15%, the TiO of 10-15% 2, again with 30% Al of above-mentioned each component weight sum 2O 3Or 30% Fe 2O 3Mix, send in the agitator and stir fully.After material to be mixed stirs, add the water of 5-10% again, and stir fully once more.Then with the compound that stirs, send in the mould again and be pressed.The semi-finished product that suppress are sent into to dry by the fire in stove again and are dried.In sending into sintering furnace, carry out activated sintering at last.Sintering temperature should be controlled at 1000 ℃.After about three hours, promptly obtain finished product ball-type honeycombed catalyst 32.
- 3. it is characterized in that according to a kind of efficient clarifier for dust fume described in claims 1,2: the honeycomb catalyst piece diameter in the catalytic cleaner 17,22 is 50-70cm, the cylindrical structural body of long 60-80cm, it all is provided with 400-500 the straight hole that diameter is 1.5-2.5cm that connects on two circular flats up and down.Catalyst activity component in its ceramic honeycomb catalyst piece is La-Cu-Co-Ni-Zr-Ce-Ti-mg-Ca-Ox.
- 4. it is characterized in that according to a kind of efficient smoke exhaust device described in claims 1,2,3; The corona dust removing purifier 16 employed operating voltages that imitate in the clarifier 14,20 front and back are 220V, and the corona output voltage is ten thousand volts of 3-5, and the spacing between the positive and negative electrode is 10-15cm.Corona positive electricity electrode is last, and the negative electricity electrode is following.
- 5. it is characterized in that according to a kind of efficient smoke exhaust device described in claims 1,2,3,4: the work input voltage of ionization ozone generator 23 is 220V, and output voltage is 3-5 ten thousand V high pressure.End in the ionization ozone generator is the high pressure positive electricity electrode 52 of ionization ozone generator, and the other end is the high pressure negative electricity electrode 53 of ionization ozone generator, all is coated with precious metal palladium Pd, platinum Pt, rhodium Rh on the positive and negative electrode.Spacing between the positive and negative electrode is 1.5-2.5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99109300 CN1279121A (en) | 1999-06-28 | 1999-06-28 | Efficient clarifier for dust fume |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99109300 CN1279121A (en) | 1999-06-28 | 1999-06-28 | Efficient clarifier for dust fume |
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| Publication Number | Publication Date |
|---|---|
| CN1279121A true CN1279121A (en) | 2001-01-10 |
Family
ID=5273803
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|---|---|---|---|
| CN 99109300 Pending CN1279121A (en) | 1999-06-28 | 1999-06-28 | Efficient clarifier for dust fume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1279121A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ302348B6 (en) * | 2001-06-27 | 2011-03-23 | Rockwool International A/S | Process and apparatus for producing mineral fibers |
| CN106582252A (en) * | 2016-12-21 | 2017-04-26 | 贵州大学 | Novel flue gas desulfurization and demercuration agent and preparation method thereof |
-
1999
- 1999-06-28 CN CN 99109300 patent/CN1279121A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ302348B6 (en) * | 2001-06-27 | 2011-03-23 | Rockwool International A/S | Process and apparatus for producing mineral fibers |
| CN106582252A (en) * | 2016-12-21 | 2017-04-26 | 贵州大学 | Novel flue gas desulfurization and demercuration agent and preparation method thereof |
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