CN101791531B - Method for processing kitchen waste and equipment thereof - Google Patents
Method for processing kitchen waste and equipment thereof Download PDFInfo
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- CN101791531B CN101791531B CN2010101288018A CN201010128801A CN101791531B CN 101791531 B CN101791531 B CN 101791531B CN 2010101288018 A CN2010101288018 A CN 2010101288018A CN 201010128801 A CN201010128801 A CN 201010128801A CN 101791531 B CN101791531 B CN 101791531B
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Abstract
The invention discloses equipment for processing kitchen waste. In the equipment, a shell consists of a cover assembly, a front casing, a left side plate, a right side plate, a rear cover plate, a feeding cover and a base; a stirring vessel and a stirring motor are arranged in the shell; a stirring shaft driven by the motor is inserted into the center of the stirring vessel; a stirring rod is fixedly arranged on the stirring shaft; a sealing strip is arranged between the stirring vessel and the feeding cover for sealing; a photocatalyst assembly which is communicated with a gas outlet in the middle-upper part of the inner chamber of the stirring vessel by a first elbow pipe is arranged in the shell; the other end of the photocatalyst assembly is sequentially connected in series with a second elbow pipe, a first catalyst tank, a third elbow pipe and a second catalyst tank which are arranged in the shell in a communication way; and the other end of the second catalyst tank is provided with a fourth elbow pipe which is connected with a second air blower. The invention also discloses a method for processing the kitchen waste. The method comprises the steps of placing the kitchen waste and digestive bacteria into the stirring vessel; starting the stirring motor and heating the stirred materials to the temperature of about 50 DEG C; and allowing gases to enter a gas processing system through negative pressure of the first air blower, and then exhausting the gases.
Description
Technical field:
The present invention relates to the to live processing method and the plant equipment thereof of rubbish from cooking belong to the field of domestic rubbish disposal.
Background technology:
Present mixing plant is of a great variety, and structure is different.The daily house refuse mixing plant that generally uses can produce more gas in whipping process, these gases mainly by toxic gas (like CO, HC and NO
XDeng) and foul smell form, directly be discharged into these toxic gases in the air, not only the health to people causes very big harm, also causes simultaneously the pollution of environment.The house refuse mixing plant that occurs on the market at present; Especially do not have relevant structure to handle the gas that is produced in the rubbish from cooking mixing plant, existing rubbish from cooking mixing plant all is directly directly to discharge the gas that in whipping process, produces all in the air.
Because exist many defectives in the prior art, to the situation of above-mentioned prior art, the applicant is devoted to the structural improvement of house refuse mixing plant and exploitation, especially in the research of rubbish from cooking mixing plant always.In constantly putting into practice and studying, a kind of fairly perfect rubbish from cooking mixing plant has been researched and developed out in the test of thousands of times on the process finally, solves the weak point of existing mixing plant; Mixing plant after the improvement can decompose toxic gas, discharges the gas of cleaning, tasteless, odorless, has also improved the stirring efficiency and the service life that has prolonged mixing plant of mixing plant simultaneously, has reduced cost, more environmental protection and energy saving.
Summary of the invention:
The objective of the invention is to overcome the deficiency of prior art; A kind of method for processing kitchen waste and equipment thereof are provided; This rubbish from cooking treatment facility can be decomposed into the toxic gas that rubbish from cooking produces the tasteless gas of cleaning in whipping process; Have easy and simple to handle, easily, stirring efficiency is high, cost is low, advantage such as safe and reliable.
The technical scheme that the present invention solves prior art rubbish from cooking treatment facility is:
A kind of rubbish from cooking treatment facility; Constitute a housing by cap assemblies, fore shell, left plate, right plate, back shroud, feeding cover and base; Agitator and stirring motor are installed in the housing; The centre of running through agitator is equipped with by motor-driven shaft; Be mounted with stirring rod on the shaft, with the sealing strip sealing, be provided with the photocatalyst assembly that is communicated with agitator inner chamber middle and upper part gas outlet with first bend pipe in its middle shell between agitator and the feeding cover; The other end of photocatalyst assembly is connected successively and is communicated in second bend pipe, first catalyzing tank, the 3rd bend pipe and second catalyzing tank in the housing, and the other end of second catalyzing tank is provided with the 4th bend pipe and is connected with second blower fan.
As further design to aforementioned rubbish from cooking treatment facility: aforesaid photocatalyst assembly by two ends all be communicated with bend pipe the photocatalyst bucket, run through the uviol lamp (UV-C) that photocatalyst bucket one end is provided with, the photocatalyst of in the photocatalyst bucket, filling is formed; The surface of described photocatalyst is covered with titanium dioxide TiO
2Heat-generating pipe and catalyst (Al are installed in described first catalyzing tank
2O
3, MnO
2Deng); In described second catalyzing tank catalyst (Al is installed
2O
3, MnO
2Deng).These catalyzing tank spaced apart one by one, wherein heat-generating pipe is equipped with in the bottom of first catalyzing tank, through the heat-generating pipe heatable catalyst, improves activity of such catalysts.Foul smell and tail gas that the rubbish from cooking treatment facility produces in the process that stirs the kitchen excess enter in the photocatalyst assembly from first bend pipe; Residual exhaust and foul smell come out from the bottom of photocatalyst assembly after treatment; Through second bend pipe between the photocatalyst assembly and first catalyzing tank; From top to bottom through first catalyzing tank of heat-generating pipe and catalyzing tank is housed; From top to bottom through second catalyzing tank of low temperature (normal temperature) catalyst is housed, (main component is H to the gas that comes out from first catalyzing tank when foul smell through the 3rd bend pipe
2When S) passing through the Catalytic Layer of first catalyzing tank, heat-generating pipe energising heating is heated to 200～300 ℃ with catalyst, forms typical catalytic combustion, with all H that accumulate in the catalyst
2S is transformed into H through catalysis
2SO
4, wherein CO at high temperature is oxidized to colourless, nontoxic carbon dioxide (CO
2) gas.The HC compound at high temperature is oxidized to steam (H
2O) and carbon dioxide (CO
2).Remaining pernicious gas such as CO, HC and NO
xWhen second catalyzing tank of low temperature (normal temperature) catalyst is housed, strengthened the activity of these three kinds of gases, carry out the OR chemical reaction, be oxidized to colourless, nontoxic carbon dioxide (CO
2) gas, steam (H
2O) and be reduced into nitrogen (N
2) and oxygen (O
2).Pernicious gas becomes harmless, odorless gas, the air communication of handling are crossed the effect of second blower fan and are discharged.So, constantly the gas in the agitator is handled and sterilized, so that discharge nontoxic, tasteless clean air.
Uviol lamp of the present invention (UV-C) is the low-pressure mercury discharge tube of highly purified quartz glass system.UV/O has just in time been satisfied in the ultraviolet ray that the high-purity quartz glass system of employing low-pressure mercury discharge tube can send 253.7nm and 184.9nm (can produce ozone) wavelength
3And the needs of usefulness.
Because (50 about degree) activity is the highest at a certain temperature for the digestion bacterium, so the bottom of agitator all needs heat tracing, promptly is provided with the heating sheet that is used for heat tracing stirring thing in the agitator bottom; Cooperate the stirring of stirring rod, order average more stir the thing stirring, stirs thing and be heated even more.
In order to make the rubbish from cooking treatment facility when working; The stressed minimizing of stirring rod; Reduce the consumed power of motor; Avoid the rubbish from cooking treatment facility stuck situation to occur, being designed to of rubbish from cooking treatment facility of the present invention: shaft is provided with many stirring rod, and the plane that forms is intersected in shaft axle center and stirring rod axle center and the stirring paddle board of stirring rod is in also two planar shaped a in an acute angle of Different Plane.The angle preferred range of this acute angle a is 10 °-25 °, and the best angle of acute angle a is 15 °.In addition, the stirring paddle board of each stirring rod forms a spiral around stirring rod, and the hand of spiral is identical with the rotation direction of shaft.
The stirring paddle board of stirring rod forms a guide effect when rotating the stirring rubbish from cooking like this; Can reduce to greatest extent and stir the stressed of paddle board, improve the rubbish from cooking treatment facility stirring efficiency, reduce stir paddle board when rotating by the big stuck chance of not changeing of rubbish from cooking.
In addition; The present invention also relates to method for processing kitchen waste simultaneously; Its solution is: a kind of method for processing kitchen waste, at first rubbish from cooking and digestion bacterium are put into agitator, and the startup stirring motor stirs rubbish from cooking and while heated and stirred thing rises to about 50 ℃ its temperature; Rubbish from cooking is discharged behind the negative pressure entering gas handling system of the gas that produces under the effect of digestion bacterium through first blower fan.Put into agitator to digestion bacterium and organic kitchen excess, shaft rotates around the axle center under the drive of motor; Drive stirring rod and stir the paddle board rotation, can evenly stir in order to make the stirring thing, the distance that stirs paddle board and agitator wall is very little; Because (50 about degree) activity is the highest at a certain temperature for the digestion bacterium, so the bottom of agitator all needs heat tracing, the stirring of cooperation stirring rod; Order average more stir the thing stirring, stirs thing and be heated even more.Organic kitchen excess becomes carbon dioxide, steam and tail gas (like H through the effect of digestion bacterium
2S, CO, HC and NO
XDeng) etc. gas, through the suction function of first blower fan, carbon dioxide, steam and tail gas etc. enter into gas handling system and handle, and discharge cleaning, clean, tasteless gas.
As the further design to the aforementioned techniques scheme: the concrete treatment step of aforesaid gas handling system is: rubbish from cooking the effect of digestion bacterium down carbon dioxide, steam and the tail gas of generation (like H
2S, CO, HC and NO
XDeng) in the suction function processing of process photocatalyst assembly down of first blower fan; First catalyzing tank of tail gas that produces through being connected with the photocatalyst assembly; Carry out the redox chemistry reaction by the tail gas after the processing of first catalyzing tank through second catalyzing tank; Produce innocuous gas such as water, carbon dioxide, nitrogen and oxygen, discharge innocuous gas then.At first tail gas utilizes the function of photocatalyst assembly through the photocatalyst assembly, the deodorization and sterilization flavor.So-called photocatalyst is exactly light-catalysed synonym, and the photocatalyst object plays catalysis, promotes the effect of reaction, do not go and itself do not participate in the reaction.
As optimal design to the treatment step of aforementioned gas handling system:
1. aforesaid rubbish from cooking the effect of digestion bacterium down carbon dioxide, steam and the tail gas of generation through the photocatalyst assembly uviol lamp (UV-C) and be covered with titanium dioxide TiO
2Photocatalyst, produce superoxide ion (O
2 -) and hydroxyl ion (OH
-), the foul smell in the tail gas (organic molecule) oxidation Decomposition is become gas molecules such as carbon dioxide.Adopting uviol lamp (UV-C) to send far ultraviolet shines and is covered with titanium dioxide TiO
2Photocatalyst material on; Because the ultraviolet range can be divided into following wavelength domain: UV-A:315～400nm, UV-B:280～315nm, UV-C:100～280nm according to International Commission on Illumination (CIE) and International Electrotechnical Commission (IEC); According to photon energy E=h/ λ formula (h constant; The λ optical wavelength), the short more photon energy of wavelength is high more.The UV-A that energy is lower has photochemical effect, so also claim chemical lines.UV-A is used for the fields such as UV curing of organic synthetic, coating or solid.UV-B is big to the action effect of biology, can cause erythema effect and pigmentation etc., so also claim biology line.UV-C is a far ultraviolet, because the short energy of wavelength is big, has bactericidal action, can decompose the combination of molecule.The light of pollutant is handled in the surface of solids and air, have only UV-C to have strong action effect.What the present invention adopted can produce ozone (O exactly
3) UV-C, ultraviolet ray shines and is covered with titanium dioxide TiO
2Behind the material Deng photocatalyst, titanium dioxide absorbs ultraviolet photon energy, produces free electron (e) and positive hole (h).Oxygen (O in free electron (e) absorbed air
2Thereby) generation superoxide ion (O
2 -); Hydrone in the absorbed air of positive hole (h) makes hydrone lose electronics, produces hydroxyl ion (OH
-).Superoxide ion (the O that produces
2 -) and hydroxyl ion (OH
-) have extremely strong oxidability, airborne stink (mainly being organic molecule) oxidation Decomposition is become gas molecules such as carbon dioxide, thereby reach the purpose of air cleaning.The utilization ultraviolet ray adds ozone and with reaching the effect that multiplies each other, what the present invention adopted is that the following short wavelength ultraviolet (UV-C) of wavelength 200nm just can have effect spread in a vacuum, so also claim vacuum ultraviolet, can decompose O
2Molecule, the single oxygen atom (O) and the O of generation
2In conjunction with producing ozone O
3Ozone O
3Has strong oxidation.In light cleaning, photooxidation, air cleaning etc. are handled, because UV and O
3And with the synergism that can produce both, so than UV or O
3The treatment effect of independent use much better.
2. the residue foul smell that comes out from the photocatalyst assembly (is mainly H
2S) and tail gas (be mainly CO, HC and NO
X) get into first catalyzing tank and carry out high temperature catalytic combustion, with the active catalyst (Al in first catalyzing tank
2O
3, MnO
2Deng) be heated to 200 ℃-300 ℃, form typical catalytic combustion, all H
2S catalysis is transformed into H
2SO
4, wherein CO at high temperature is oxidized to colourless, nontoxic carbon dioxide (CO
2) gas.The HC compound at high temperature is oxidized to steam (H
2O) and carbon dioxide (CO
2).Catalytic combustion is typical gas-solid-phase catalytic reaction, and it has reduced the activation energy of reaction by catalyst, makes it under 200～300 ℃ of lower initiation temperatures, carry out flameless combustion, and the organic substance oxidation occurs in solid catalyst surface, produce CO simultaneously
2And H
2O, and emit great amount of heat, because of its oxidizing reaction temperature is low, so suppressed airborne N widely
2Form high temperature NO
xAnd because the catalytic action of selection of catalysts property, the oxidizing process of nitrogen-containing compound (RNH) in the possible fuel limitation makes its most dinitrogen (N that form
2).The essence of catalytic combustion is, airborne oxygen by the activation of the institute of the active component in the catalyst transmission of energy has been taken place when active oxygen contacts with reactant molecule, and reactant molecule is activated thereupon, thereby has accelerated the reaction rate of oxidation reaction.Compare with traditional flame combustion, catalytic combustion has very big advantage: at first, its initiation temperature low (transforming 10% o'clock temperature), less energy consumption, burning is prone to reach stable, even need not extraneous the heat transfer behind the initiation temperature and just can accomplish oxidation reaction; Secondly, its purification efficiency is high, pollutant such as NO
xAnd the emission level of imperfect combustion product etc. is lower.
3. remaining tail gas is (like CO, HC and NO
x) come out from first catalyzing tank, through low temperature (normal temperature) catalyst (Al is housed
2O
3, MnO
2Deng) second catalyzing tank carry out the OR chemical reaction, produce innocuous gas such as steam, carbon dioxide, nitrogen and oxygen, discharge innocuous gas by second blower fan then.Remaining pernicious gas such as CO, HC and NO
xDuring through the catalyst in low temperature (normal temperature) catalytic reactor, strengthen the activity of three kinds of gases, carried out the OR chemical reaction.Wherein CO is oxidized to colourless, nontoxic carbon dioxide (CO at normal temperatures
2) gas.The HC compound is oxidized to water (H at normal temperatures
2O) and carbon dioxide (CO
2).NO
xBe reduced into nitrogen (N
2) and oxygen (O
2).
Rubbish from cooking treatment facility features simple structure of the present invention, easy and simple to handle is compared with the refuse treatment plant of prior art, and treatment facility of the present invention has following advantage:
1. the present invention adopts special high efficiency digestion bacterium, and digestive efficiency is high.
2. the present invention adopts novel stirring technique, stirs the stressed little of paddle board, avoids producing stall or stirs and wear agitator.Can improve the reliability of complete machine, reduce consumed power, more environmental protection and energy saving.Resistance is little during stirring, and stirring rod is not easy fracture, long service life.Stir more evenly, it is average to be heated, and digestive efficiency is higher.
The present invention adopt ozone+ultraviolet ray kill or decomposition chamber in odor pollutants such as microorganism (comprising bacteriums such as staphylococcus aureus, Escherichia coli, influenza virus), methyl mercaptan, hydrogen sulfide, dimethyl sulfide, discharge cleaning, tasteless, no odour.
4. the present invention adopts the effective resolving harmful gas of multiple catalyzing device (like H
2S, CO, HC and NO
x, formaldehyde, benzene, ammonia), make pernicious gas and gas with foreign flavor become harmless, odorless gas.
5. the present invention is provided with simply, and easy to maintenance, operating cost is low, and is safe and reliable.
Description of drawings:
Fig. 1 is the sketch map of the rubbish from cooking treatment facility of the embodiment of the invention.
Fig. 2 is the sketch map at the A-A place among Fig. 1.
Fig. 3 is the sketch map at the B-B place among Fig. 1.
Fig. 4 is the sketch map of the shaft of present embodiment.
Fig. 5 is the rearview of Fig. 4.
Reference numeral is: 1. cap assemblies; 2. middle seat; 3. uviol lamp (UV-C); 5. photocatalyst assembly; 6. left plate; 7. second bend pipe; 8. first bend pipe; 9.UV lamp connector; 10. rectifier; 11. the 3rd bend pipe; 12. first catalyzing tank; 13. second catalyzing tank; 14. chain gearing; 15. the 4th bend pipe; 16. second blower fan; 17. right plate; 18. feeding cover; 19. control computer plate; 20. host computer plate; 21. flange; 22. fore shell; 23. motor; 24. base; 25. sealing strip; 26. spring; 27. axle gripper shoe; 28. middle seat back shroud; 29. back shroud; 30. catalyzing tank fixed head; 33. screen pack; 34. shaft; 35. stirring rod; 36. rubber mat; 37. agitator; 38. hold-down screw; 39. stirring paddle board; 40. photocatalyst bucket; 41. heat-generating pipe; 42. heating sheet.
The specific embodiment:
Provide most preferred embodiment of the present invention below in conjunction with accompanying drawing.
Embodiments of the invention relate to a kind of method for processing kitchen waste and equipment thereof; The concrete structure of its equipment is: a kind of rubbish from cooking treatment facility; Like Fig. 1, shown in Figure 2, constitute a housing by cap assemblies 1, fore shell 22, left plate 6, right plate 17, back shroud 29 and base 24; Cap assemblies bottom is provided with feeding cover 18, and cap assemblies is articulated in back shroud with the pin that is with spring 26, pins and the axle gripper shoe 27 be located on the back shroud is fixed.Agitator 37 is installed in the housing, seat 2 in being provided with between agitator and the feeding cover, middle seat is fixed on the back shroud with middle seat back shroud 28, and the bottom margin of feeding cover is equipped with sealing strip 25 and middle seat corresponding matching, seals with sealing strip between agitator and the feeding cover.Fore shell is provided with control computer plate 19 and host computer plate 20; The bottom of housing is provided with rubber mat 36.
As shown in Figure 1, agitator is equipped with stirring motor 23 outward, and the centre of running through agitator is equipped with by motor-driven shaft 34, is mounted with stirring rod 35 on the shaft, and the agitator bottom is equipped with and is used for the heating sheet 42 that heat tracing stirs thing.Like Fig. 2, shown in Figure 3, the driven end of shaft is socketed with a flange 21, and the drive end of motor power output is connected with flange through chain gearing 14, realizes the rotation of shaft.Like Fig. 4, shown in Figure 5, four stirring rod are fixed on the shaft with hold-down screw 38, and the plane of formation is intersected in shaft axle center and stirring rod axle center and the stirring paddle board 39 of stirring rod is in Different Plane and 15 ° of acute angle a of two planes formation; The stirring paddle board of each stirring rod forms a spiral around stirring rod, and the hand of spiral is identical with the rotation direction of shaft.
As shown in Figure 2; Be provided with gas handling system outside the agitator in housing; Gas handling system is positioned at the postmedian of housing, and gas handling system is: the other end that is communicated with photocatalyst assembly 5, the photocatalyst assembly of agitator inner chamber middle and upper part gas outlets with first bend pipe 8 is connected successively and is communicated in second bend pipe 7 in the housing, first catalyzing tank 12, the 3rd bend pipe 11 and second catalyzing tank 13; The inlet end of first bend pipe is provided with screen pack 33 and is provided with first blower fan and blasts gas in the photocatalyst assembly, and the other end of second catalyzing tank is provided with the 4th bend pipe 15 and is connected with second blower fan 16.
The photocatalyst assembly is made up of photocatalyst bucket 40, the uviol lamp (UV-C) 3 that runs through the setting of photocatalyst bucket one end, the photocatalyst of in the photocatalyst bucket, filling; The surface of photocatalyst is covered with titanium dioxide TiO
2Uviol lamp (UV-C) is the low-pressure mercury discharge tube of highly purified quartz glass system.Heat-generating pipe 41 and catalyst (Al are installed in first catalyzing tank
2O
3, MnO
2Deng); Catalyst (Al is installed in second catalyzing tank
2O
3, MnO
2Deng).These catalyzing tank spaced apart one by one is fixed with catalyzing tank fixed head 30 between second catalyzing tank and the housing base and is used for fixing catalyzing tank, and wherein heat-generating pipe is equipped with in the bottom of first catalyzing tank, through the heat-generating pipe heatable catalyst, improves activity of such catalysts.Also be provided with the rectifier 10 of UV-C lamp connector 9 and control entire process device current in the housing.Foul smell and tail gas that the rubbish from cooking treatment facility produces in the process that stirs the kitchen excess enter in the photocatalyst assembly from first bend pipe 8; Wherethrough reason back residual exhaust and foul smell come out from the bottom of photocatalyst assembly; Through second bend pipe 7 between the photocatalyst assembly and first catalyzing tank; From top to bottom through first catalyzing tank of heat-generating pipe and catalyzing tank is housed; From top to bottom through second catalyzing tank of low temperature (normal temperature) catalyst is housed, (main component is H to the gas that comes out from first catalyzing tank when foul smell through the 3rd bend pipe 11
2When S) passing through the Catalytic Layer of first catalyzing tank, heat-generating pipe energising heating is heated to 200～300 ℃ with catalyst, forms typical catalytic combustion, with all H that accumulate in the catalyst
2S is transformed into H through catalysis
2SO
4, wherein CO at high temperature is oxidized to colourless, nontoxic carbon dioxide (CO
2) gas, the HC compound at high temperature is oxidized to steam (H
2O) and carbon dioxide (CO
2).Remaining pernicious gas such as CO, HC and NO
xWhen second catalyzing tank of low temperature (normal temperature) catalyst is housed, strengthened the activity of these three kinds of gases, carry out the OR chemical reaction, be oxidized to colourless, nontoxic carbon dioxide (CO
2) gas, water (H
2O) and be reduced into nitrogen (N
2) and oxygen (O
2).Pernicious gas becomes harmless, odorless gas, the air communication of handling are crossed the effect of second blower fan and are discharged.With this, processing and sterilization that the gas in the agitator is constantly circulated are so that discharge nontoxic, tasteless clean air.
Method for processing kitchen waste of the present invention is: at first rubbish from cooking and digestion bacterium are put into agitator in the lump, the startup stirring motor stirs rubbish from cooking and while heated and stirred thing rises to about 50 ℃ its temperature; Rubbish from cooking is discharged behind the negative pressure entering gas filter system of the gas that produces under the effect of digestion bacterium through first blower fan.Put into agitator to digestion bacterium and organic kitchen excess, shaft rotates around the axle center under the drive of motor; The drive stirring rod is rotated, and can evenly stir in order to stir thing, and the distance that stirs paddle board and agitator wall is very little; Because (50 about degree) activity is the highest at a certain temperature for the digestion bacterium, so the bottom of agitator all needs heat tracing, the stirring of cooperation stirring rod; Order average more stir the thing stirring, stirs thing and be heated even more.Organic kitchen excess becomes carbon dioxide, steam and tail gas (like H through the effect of digestion bacterium
2S, CO, HC and NO
xDeng) etc. gas, through the suction function of first blower fan, carbon dioxide, steam and tail gas etc. enter into gas handling system and handle, and discharge cleaning, clean, tasteless gas.
The concrete treatment step of gas handling system is:
1. aforesaid rubbish from cooking the effect of digestion bacterium down carbon dioxide, steam and the tail gas of generation through the photocatalyst assembly uviol lamp (UV-C) and be covered with titanium dioxide TiO
2Deng photocatalyst, produce superoxide ion (O
2 -) and hydroxyl ion (OH
-), the foul smell in the tail gas (organic molecule) oxidation Decomposition is become gas molecules such as carbon dioxide.Adopting uviol lamp (UV-C) to send far ultraviolet shines and is covered with titanium dioxide TiO
2Photocatalyst material on.What present embodiment adopted is to produce ozone (O
3) UV-C, ultraviolet ray shines and is covered with titanium dioxide TiO
2Behind the material of photocatalyst, titanium dioxide absorbs ultraviolet photon energy, produces free electron (e) and positive hole (h).Oxygen O in free electron (e) absorbed air
2Thereby produce superoxide ion (O
2 -); Hydrone in the absorbed air of positive hole (h) makes hydrone lose electronics, produces hydroxyl ion (OH
-).Superoxide ion (the O that produces
2 -) and hydroxyl ion (OH
-) have extremely strong oxidability, airborne stink (mainly being organic molecule) oxidation Decomposition is become gas molecules such as carbon dioxide, thereby reach the purpose of air cleaning.
2. the residue foul smell that comes out from the photocatalyst assembly (is mainly H
2S) and tail gas (be mainly CO, HC and NO
x) get into first catalyzing tank and carry out high temperature catalytic combustion, with the active catalyst (Al in first catalyzing tank
2O
3, MnO
2Deng) be heated to 200 ℃-300 ℃, form typical catalytic combustion, all H
2S catalysis is transformed into H
2SO
4, wherein CO at high temperature is oxidized to colourless, nontoxic carbon dioxide (CO
2) gas.The HC compound at high temperature is oxidized to water (H
2O) and carbon dioxide (CO
2).Catalytic combustion is typical gas-solid-phase catalytic reaction, and it has reduced the activation energy of reaction by catalyst, makes it under 200～300 ℃ of lower initiation temperatures, carry out flameless combustion, and the organic substance oxidation occurs in solid catalyst surface, produce CO simultaneously
2And H
2O, and emit great amount of heat, because of its oxidizing reaction temperature is low, so suppressed airborne N widely
2Form high temperature NO
xAnd because the catalytic action of selection of catalysts property, the oxidizing process of nitrogen-containing compound (RNH) in the possible fuel limitation makes its most dinitrogen (N that form
2).The essence of catalytic combustion is, airborne oxygen by the activation of the institute of the active component in the catalyst transmission of energy has been taken place when active oxygen contacts with reactant molecule, and reactant molecule is activated thereupon, thereby has accelerated the reaction rate of oxidation reaction.
3. remaining tail gas is (like CO, HC and NO
x) come out from first catalyzing tank, through low temperature (normal temperature) catalyst (Al is housed
2O
3, MnO
2Deng) second catalyzing tank carry out the OR chemical reaction, produce innocuous gas such as water, carbon dioxide, nitrogen and oxygen, discharge innocuous gas by second blower fan then.Remaining pernicious gas such as CO, HC and NO
xDuring through the catalyst in low temperature (normal temperature) catalytic reactor, strengthen the activity of three kinds of gases, carried out the OR chemical reaction.Wherein CO is oxidized to colourless, nontoxic carbon dioxide (CO at normal temperatures
2) gas.The HC compound is oxidized to steam (H at normal temperatures
2O) and carbon dioxide (CO
2).NO
xBe reduced into nitrogen (N
2) and oxygen (O
2).
The above only is preferred embodiment of the present invention, is not structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (7)
1. rubbish from cooking treatment facility; Constitute a housing by cap assemblies (1), fore shell (22), left plate (6), right plate (17), back shroud (29), feeding cover (18) and base (24); Agitator (37) and stirring motor (23) are installed in the housing; The centre of running through agitator is equipped with by motor-driven shaft (34); Be mounted with stirring rod (35) on the shaft; Seal with sealing strip (25) between agitator and the feeding cover; It is characterized in that: be provided with the photocatalyst assembly (5) that is communicated with agitator inner chamber middle and upper part gas outlet with first bend pipe (8) in the described housing, the other end of photocatalyst assembly is connected successively and is communicated in second bend pipe (7), first catalyzing tank (12), the 3rd bend pipe (11) and second catalyzing tank (13) in the housing, and the other end of second catalyzing tank is provided with the 4th bend pipe (15) and is connected with second blower fan (16).
2. equipment according to claim 1 is characterized in that: described photocatalyst assembly is made up of photocatalyst bucket (40), the uviol lamp (3) that runs through the setting of photocatalyst bucket one end, the photocatalyst of in the photocatalyst bucket, filling; The surface of described photocatalyst is covered with titanium dioxide TiO
2Heat-generating pipe (41) and catalyst A l are installed in described first catalyzing tank
2O
3, MnO
2In described second catalyzing tank catalyst A l is installed
2O
3, MnO
2
3. according to any described equipment of claim 1-2, it is characterized in that: described agitator bottom is provided with and is used for the heating sheet (42) that heat tracing stirs thing.
4. equipment according to claim 3 is characterized in that: the plane of formation is intersected in shaft axle center and stirring rod axle center and the stirring paddle board (39) of stirring rod is in Different Plane and two planar shaped a in an acute angle.
5. equipment according to claim 4 is characterized in that: the angular range of described acute angle a is 10 °-25 °.
6. method for processing kitchen waste is characterized in that: rubbish from cooking and digestion bacterium are put into agitator, start stirring motor stir rubbish from cooking and simultaneously the heated and stirred thing make its temperature rise to 50 ℃; Rubbish from cooking is discharged behind the negative pressure entering gas handling system of the gas that produces under the effect of digestion bacterium through first blower fan; The concrete treatment step of described gas handling system is: the gas that rubbish from cooking produces under the effect of digestion bacterium: the processing of carbon dioxide, steam and tail gas process photocatalyst assembly under the suction function of first blower fan; First catalyzing tank of tail gas that produces through being connected with the photocatalyst assembly; Carry out the redox chemistry reaction by the tail gas after the processing of first catalyzing tank through second catalyzing tank; Produce steam, carbon dioxide, nitrogen and these innocuous gas of oxygen, discharge outside the housing then.
7. processing method according to claim 6 is characterized in that: described rubbish from cooking the effect of digestion bacterium down carbon dioxide, steam and the tail gas of generation through the photocatalyst assembly uviol lamp and be covered with titanium dioxide TiO
2Photocatalyst, produce superoxide ion O
2 -With hydroxyl ion OH
-, the foul smell oxidation Decomposition in the tail gas is become carbon dioxide; Residue foul smell that comes out from the photocatalyst assembly and tail gas get into first catalyzing tank and carry out high temperature catalytic combustion, with the active catalyst Al in first catalyzing tank
2O
3, MnO
2Be heated to 200 ℃-300 ℃, form typical catalytic combustion, all H
2S catalysis is transformed into H
2SO
4, wherein CO at high temperature is oxidized to colourless, nontoxic carbon dioxide CO
2Gas, the HC compound at high temperature is oxidized to water H
2O and carbon dioxide CO
2Remaining tail gas comes out from first catalyzing tank, through constant temperature catalyzing agent Al is housed
2O
3, MnO
2Second catalyzing tank carry out redox chemistry reaction, produce steam, carbon dioxide, nitrogen and oxygen, discharge innocuous gas by second blower fan then.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI410361B (en) * | 2010-11-18 | 2013-10-01 | Tsung Chieh Wang | Apparatus for treating kitchen waste and the decomposer thereof |
| CN106040723A (en) * | 2016-07-19 | 2016-10-26 | 苏州鸿本机械制造有限公司 | Deodorizing system of kitchen garbage treating machine |
| CN106215618B (en) * | 2016-09-21 | 2019-02-05 | 安徽江航爱唯科环境科技有限公司 | A kind of exhaust gas purifying method of rubbish from cooking |
| CN106215617B (en) * | 2016-09-21 | 2019-05-31 | 安徽江航爱唯科环境科技有限公司 | A kind of waste gas purification apparatus of rubbish from cooking |
| CN106825003A (en) * | 2017-03-24 | 2017-06-13 | 南京科维奥环境科技有限公司 | Kitchen garbage microorganism recycling treatment all-in-one on the spot |
| CN109675364B (en) * | 2019-01-09 | 2021-06-08 | 河北尚德环境工程有限公司 | Kitchen waste treatment equipment |
| CN110193278A (en) * | 2019-06-27 | 2019-09-03 | 标优美生态工程股份有限公司 | The exhaust treatment system and household kitchen leftover treating apparatus of household kitchen leftover treating apparatus |
| CN113719953B (en) * | 2021-10-08 | 2023-02-10 | 杭州科技职业技术学院 | Dehumidification and photo-thermal catalysis synergistic air purification system |
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| CN2649589Y (en) * | 2003-07-25 | 2004-10-20 | 黄志鸿 | Kitchen residual treating machine |
| CN2710779Y (en) * | 2004-08-06 | 2005-07-20 | 北京厨房设备集团公司 | Biological treating machine for treating kitchen garbage |
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