CN101306310B - Waste gas decomposition device and method using jet and infrared resonance - Google Patents

Abstract

The invention relates to a device and a method for decomposing waste gas by using jet flow and infrared resonance. The device of the invention comprises a gas inlet, through which the waste gas is flowed in; a metal cavity, which is used for receiving the waste gas flowing through the gas inlet; a gas outlet, which is used the waste gas to flow out after being processed; and at least one reflux circulating gas pipe, of which one end is arranged between the metal cavity and the gas outlet, and the other end is connected to a gas hole arranged on the metal cavity; wherein, a jet pipe is arranged in the gas inlet, the jet pipe is inserted in the metal cavity; a receiving cavity is arranged in the metal cavity for receiving the waste gas which is jetted from the jet pipe and generating the negative pressure effect; a sound eliminator is arranged in the gas outlet for blocking the excessive fast emission of the waste gas from the gas outlet and playing the role of sound eliminating; and the material of the metal cavity has the thermal radiation infrared spectrum Omega which can be matched with the natural frequency spectrum Omega Omicron of the waste gas molecules in the cavity for resonance. The device has high decomposition speed of the waste gas, high processing efficiency, great processing capacity and low cost.

Description

Device and method with jet and infrared resonance waste gas decomposition

Technical field

The present invention relates to the exhaust-gas treatment field, especially relate to a kind of device and method with jet and infrared resonance waste gas decomposition.

Background technology

At present, industrial waste gas, automobile exhaust gas etc. are serious day by day to the pollution of global environment, and energy-saving and emission-reducing becomes the important topic of current era protection environment, also is the important leverage that human society is able to sustainable development.For the exhaust-gas treatment problem, commonly used is thermocatalytic method, photocatalysis method both at home and abroad, has started the method for the method of microbial degradation, the degraded of ultrasound-enhanced efficient oxidation etc. at the beginning of 21 century again.But, these methods the amount of treatable pollutant much smaller than the discharge capacity or the generation of pollutant, the speed that its speed of handling pollutant also produces much smaller than pollutant, its processing cost is also very high.Therefore, still remain to be researched and developed new equipment and the new method that the exhaust-gas treatment amount is bigger, treatment effeciency is higher, processing cost is lower.

Summary of the invention

The object of the present invention is to provide a kind of device with jet and infrared resonance waste gas decomposition, this Design of device principle is novel, and fast to the decomposition rate of waste gas, treatment effeciency is higher, and treating capacity is bigger, and application cost is lower.

Device with jet and infrared resonance waste gas decomposition of the present invention comprises: air inlet is forced into P >=0.5Mpa and flows into through this air inlet with the waste gas of heating to T >=500 ℃; Wire chamber is used to receive the waste gas that gets into through air inlet; Exhaust outlet, the waste gas after supplying to handle flows out; And at least one reflux cycle tracheae, the one of which end is arranged between said wire chamber and the said exhaust outlet, and the other end is connected to the pore that said wire chamber is provided with; Wherein, in the described air inlet jet pipe is housed, this jet pipe inserts in the described wire chamber; In the described wire chamber reception cavity is housed, receives through said jet pipe and spray the waste gas that gets into and produce underbalance effect; In the described exhaust outlet silencer is housed, to stop that waste gas is from too fast discharge of exhaust outlet and noise elimination effect; The material of said wire chamber has the heat radiation infrared spectrum ω that can mate resonance with emission molecule eigenfrequency spectrum ω o in the chamber.

The present invention also provides a kind of method with jet and infrared resonance waste gas decomposition.

A kind of method with jet and infrared resonance waste gas decomposition of the present invention may further comprise the steps:

A. pending waste gas is forced into P >=0.5Mpa, and is heated to T >=500 ℃;

B. above-mentioned waste gas is got into a wire chamber from air inlet through jet pipe; Produce underbalance effect; The wire chamber wall receives thermal excitation and the radiated infrared ripple of waste gas, the material of said wire chamber have can with the heat radiation infrared spectrum ω of emission molecule eigenfrequency spectrum ω o coupling resonance in the chamber;

When C. above-mentioned waste gas flows to exhaust outlet; Be obstructed in the place at silencer; Under the jet flow negative pressure guiding, get into the reflux cycle tracheae; Be back to said wire chamber through this pipe, with the waste gas impinging jet that spray to get into said wire chamber and form turbulent flow, this turbulent flow impacts is excited the emission molecule of resonance and makes its unidirectional decomposition.

Device and method with jet and infrared resonance waste gas decomposition of the present invention is based on that following principle designs:

The firstth, the jet flow negative pressure effect, this device utilizes the fluid ejector principle in wire chamber, to obtain vacuum, in this device, two fluid streams of different pressures is arranged; Higher one of pressure is called working fluid; It penetrates the reception cavity that gets into injector with very high speed from nozzle; And siphon away the lower fluid media (medium) of pressure at reception cavity, the fluid that is siphoned away is called driving fluid, and this two fluid streams is mixed each other; Be accompanied by energy exchange, to form the fluid-mixing that one has new pressure.

The secondth, infra-red radiation excites the principle with infrared resonance waste gas decomposition molecule; It has determined the ringing of the design of infrared resonance chamber, working fluid and driving fluid; The coupling resonance of wire chamber wall material intrinsic frequency ω and emission molecule intrinsic frequency ω 0 makes vibrational energy surpass molecule constraint bond energy, thereby realizes the decomposition of emission molecule; In circulation impact, increased the probability that decomposes, reduced gas molecule and decomposed the compound possibility in back.

Therefore, the present invention utilizes the formed jet of waste gas self, not only produces negative pressure, and causes the air-flow circulation, and this high temp jet also causes infra-red radiation, is the source of infrared resonance.Particularly, will have the waste gas of certain pressure and temperature (for example P >=0.5Mpa and T >=500 ℃), or waste gas is forced into P >=0.5Mpa and heats to T >=500 ℃; Spray into through fluidic device then and produce underbalance effect in the wire chamber, the chamber wall receives the thermal excitation more than 500 ℃, the radiated infrared ripple; Emission molecule eigenfrequency spectrum ω o coupling just can realize the resonant excitation state in design chamber material heat radiation infrared spectrum ω and the chamber, is excited waste gas formation circulating reflux under the negative pressure promotion in the chamber; Jet with incident collides again; Turbulent circulation impact occurs, destroy the molecular bond energy of the loose combination of excitation state, emission molecule decomposition and impossible reverse compound; Thereby a large amount of waste gas decompositions become harmless gas or simple substance and discharge.

Therefore, the device and method with jet and infrared resonance waste gas decomposition of the present invention, fast for the decomposition rate of waste gas, treatment effeciency is higher, and treating capacity is bigger, and application cost is lower.

Device and method of the present invention can be used for decomposing industrial waste gas, for example is installed in the waste gas outlet of Industrial Boiler, also can be used for decomposing automobile exhaust, for example is installed in the vehicle exhaust outlet, can also be used for focusing on of waste gas separately.

Description of drawings

Fig. 1 is the schematic representation of apparatus with jet and infrared resonance waste gas decomposition of the present invention, and arrow is depicted as the direction of exhaust-gas flow among the figure.

The specific embodiment

Device with jet and infrared resonance waste gas decomposition of the present invention, as shown in Figure 1, comprising: air inlet 1 is forced into P >=0.5Mpa and flows into through this air inlet 1 with the waste gas of heating to T >=500 ℃; Wire chamber 2 is used to receive the waste gas that gets into through air inlet 1; Exhaust outlet 3, the waste gas after supplying to handle flows out; And at least one reflux cycle tracheae 4 (be shown as two among the figure, be respectively bCD reflux cycle tracheae and bHE reflux cycle tracheae), the one of which end is arranged between said wire chamber 2 and the said exhaust outlet 3, and the other end is connected to the pore that said wire chamber 2 is provided with; Wherein, in the described air inlet 1 jet pipe 5 is housed, this jet pipe 5 inserts in the described wire chamber 2; In the described wire chamber 2 reception cavity 6 is housed, receives through said jet pipe 5 and spray the waste gas that gets into and produce underbalance effect; In the described exhaust outlet 3 silencer 7 is housed, to stop that waste gas is from exhaust outlet 3 too fast discharges and noise elimination effect; The material of said wire chamber 2 has the heat radiation infrared spectrum ω that can mate resonance with emission molecule eigenfrequency spectrum ω o in the chamber.

A kind of method of the present invention with jet and infrared resonance waste gas decomposition, as shown in Figure 1, the direction of the exhaust-gas flow shown in the arrow in figure, this method may further comprise the steps:

A. pending waste gas is forced into P >=0.5Mpa, and is heated to T >=500 ℃;

B. above-mentioned waste gas is got into a wire chamber 2 from air inlet 1 through jet pipe 5; Produce underbalance effect; The wire chamber wall receives thermal excitation and the radiated infrared ripple of waste gas, the material of said wire chamber 2 have can with the heat radiation infrared spectrum ω of emission molecule eigenfrequency spectrum ω o coupling resonance in the chamber;

When c. above-mentioned waste gas flows to exhaust outlet 3; Be obstructed in 7 places at silencer; Under the jet flow negative pressure guiding, get into reflux cycle tracheae 4; Be back to said wire chamber 2 through this pipe, with the waste gas impinging jet that spray to get into said wire chamber 2 and form turbulent flow, this turbulent flow impacts is excited the emission molecule of resonance and makes its unidirectional decomposition.

Those skilled in the art know, and mainly contain NO in the waste gas ₂, SO ₂With CO gas.Below selecting common vehicle exhaust is example, and wire chamber is selected stainless steel, this stainless steel metal chamber have with vehicle exhaust in NO ₂, SO ₂Heat radiation infrared spectrum ω with CO gas molecule eigenfrequency spectrum ω o coupling resonance at length analyzes.

Waste gas with pressure P, temperature T is injected in the wire chamber 2 through jet pipe 5 from air inlet 1, and the speed of this waste gas can be from the Bai Nuli equation estimation:

If P=5kg/cm ²=0.5Mpa; $V=\sqrt{\frac{2p}{\mathrm{\ρ}}}=500m/s$

This speed is enough to produce the jet flow negative pressure effect.Exhaust outlet 3 is because of being equipped with silencer, airflow obstruction, under negative pressure promoted, exit flow was shunted, in promptly scheming along path bCD and bHE about two reflux cycle tracheaes 4 return wire chamber 2, form turbulent flow with the impinging jet of incident cavity.At this moment the chamber wall is by waste gas jet heating, the chamber wall molecule excited vibrational that is heated, and the secondary radiation electricity is grown ripple and is full of cavity.With the cavity material is that stainless steel is an example, and the molecular vibrational frequency ω of secondary radiation can be according to structure of matter theoretical calculation, and emission molecule intrinsic frequency ω O also can estimate equally, shown in table one:

Table one: vehicle exhaust gets into the spectrum distribution of stainless steel cavity

Infrared waves and the emission molecule intrinsic frequency ω of thermal excitation ω in the present analysis cavity ₀Resonant condition: the stainless steel metal chamber is under 500 ℃ thermal excitation, and molecular dipole vibration all can take place C γ-0 key → Fe-O key, and the corresponding wavelength of the frequency of vibration is shown in table one, and the infrared waves of radiation have electric field

Be full of whole wire chamber, be full of emission molecule in the chamber, satisfy the Maxwell equation as the field medium:

$\▿\×\stackrel{\→}{E}=-\stackrel{\stackrel{\backslash }{\→}}{B}-------------\left(1\right)$

$\▿\×\stackrel{\→}{H}=\mathrm{\ϵ\μ}\stackrel{\→}{E}-------------\left(2\right)$

The dipole forced vibration takes place in emission molecule under above-mentioned effect, satisfy kinetic equation:

$\stackrel{\stackrel{\backslash \backslash }{\→}}{X}+\mathrm{\γ}\stackrel{\stackrel{\backslash }{\→}}{\mathrm{\χ}}+{{\mathrm{\ω}}_o}^2\stackrel{\→}{\mathrm{\χ}}=\frac{e}{m}{\stackrel{\→}{E}}_0{e}^{-\mathrm{i\ωt}}----------------\left(3\right)$

Solve equation (3) and get dipole vibration displacement vector

$\stackrel{\→}{X}=\frac{e}{m}\frac{1}{({{\mathrm{\ω}}_o}^2-{\mathrm{\ω}}^2)-\mathrm{i\ω\γ}}\stackrel{\→}{E}----------------\left(4\right)$

Corresponding polarization vector

$\stackrel{\→}{P}=N_e\stackrel{\→}{\mathrm{\χ}}=\frac{{\mathrm{Ne}}^2}{m[({{\mathrm{\ω}}_o}^2-{\mathrm{\ω}}^2)-\mathrm{i\ω\γ}]}\stackrel{\→}{E}----------------\left(5\right)$

Can find out that from formula (4), (5) this is a resonance state when ω=ω o, to have peak swing

and

.From the Wavelength distribution of table one, can clearly find out, the thermal-radiating wavelength X in stainless steel metal chamber, the emission molecule natural wavelength λ o that coincides, this resonant condition can realize.Emission molecule under resonance state, it is loose that its bond energy links, and when they are back to cavity, suffers the bump repeatedly of jet, turbulent flow, must break away from the constraint of bond energy, resolves into simpler molecule, this also can come out from following theoretical calculation:

NO for example ₂, N-0 bond energy:

NO ₂Under the excitation of chamber wall infra-red radiation, the kinetic energy of its forced vibration

Wherein:

m _NO2Be NO ₂Molecular mass, can calculate from the gram-molecular weight theory:

${\mathrm{\ω}}_o=2\mathrm{\πf}=\frac{2\mathrm{\πe}}{\mathrm{\λo}}=\frac{2\mathrm{\π}\×3\×{10}^{10}}{6\×{10}^{-4}}=\mathrm{\π}\×{10}^{14}$

$=5.4\left(\mathrm{ev}\right)$

Therefore, this vibrational energy E _KGreater than molecule constraint bond energy.

Conclusion: in infrared resonance, the constraint bond energy of emission molecule can be overcome by resonance, and under the impact of jet turbulent flow, emission molecule decomposes voluntarily and can not be compound.

In like manner can calculate waste gas SO ₂In wire chamber, be excited the reason of decomposing with CO:

For example: SO ₂Waste gas, each molecule have two S-O keys, each S-O bond energy

Waste gas SO ₂The kinetic energy of excited vibration in wire chamber

$E_K=\frac{1}{2}{m}_{{\mathrm{so}}_2}{\left(\stackrel{\stackrel{\backslash }{\→}}{\mathrm{\χ}}\right)}^2$

Wherein: m _SO2Be SO ₂GMW

Be SO ₂The molecular vibration velocity of displacement

$\left|\stackrel{\stackrel{\backslash }{\→}}{\mathrm{\χ}}\right|={\mathrm{\ω}}_o\left|\stackrel{\→}{\mathrm{\χ}}\right|{=\mathrm{\ω}}_o{\mathrm{\χ}}_o$

${\mathrm{\ω}}_o=\frac{2\mathrm{\πe}}{\mathrm{\λo}}=\frac{2\mathrm{\π}\×3\×{10}^{10}}{5.55\×{10}^{-4}}=1.08\mathrm{\π}\×{10}^{14}$

So $E_K=\frac{1}{2}\×1.06\×{10}^{-23}\×{(1.08\mathrm{\π}\×{10}^{14})}^2{(0.16\×{10}^{-8})}^2$

$=11\left(\mathrm{ev}\right)$

It is thus clear that SO ₂Molecule is at wire chamber excited vibration kinetic energy E _KMuch larger than molecule constraint bond energy, following of the impact of turbulent flow maybe unidirectional decomposition in the chamber.

Again for example: its C-O bond energy of waste gas CO

The kinetic energy of waste gas CO excited vibration in wire chamber

$E_K=\frac{1}{2}{m}_{{\mathrm{co}}_2}{\left(\stackrel{\stackrel{\backslash }{\→}}{\mathrm{\χ}}\right)}^2$

The molecular mass of CO

wherein

The molecular vibration speed of CO $\left|\stackrel{\stackrel{\backslash }{\→}}{\mathrm{\χ}}\right|={\mathrm{\ω}}_o\left|\stackrel{\→}{\mathrm{\χ}}\right|={\mathrm{\ω}}_o{\mathrm{\χ}}_o$

∴ $E_K=\frac{1}{2}(4.65\×{10}^{-23}){(0.6\mathrm{\π}\×{10}^{14})}^2{(0.5\×{10}^8)}^2$

$=12.4\left(\mathrm{ev}\right)$

CO waste gas is at the kinetic energy E of excited vibration _KGreater than the molecular link binding energy,, must unidirectionally decompose in turbulent flow under impacting.

Claims (2)

1. the device with jet and infrared resonance waste gas decomposition is characterized in that: comprise

Air inlet is forced into P >=0.5Mpa and flows into through this air inlet with the waste gas of heating to T >=500 ℃;

Wire chamber is used to receive the waste gas that gets into through air inlet;

Exhaust outlet, the waste gas after supplying to handle flows out; And

At least one reflux cycle tracheae, one of which end are arranged between said wire chamber and the said exhaust outlet, and the other end is connected to the pore that said wire chamber is provided with;

Wherein, in the described air inlet jet pipe is housed, this jet pipe inserts in the described wire chamber;

In the described wire chamber reception cavity is housed, receives through said jet pipe and spray the waste gas that gets into and produce underbalance effect;

In the described exhaust outlet silencer is housed, to stop that waste gas is from too fast discharge of exhaust outlet and noise elimination effect;

The material of said wire chamber has the heat radiation infrared spectrum ω that can mate resonance with emission molecule eigenfrequency spectrum ω o in the chamber.

2. the method with jet and infrared resonance waste gas decomposition is characterized in that, may further comprise the steps:

A. pending waste gas is forced into P >=0.5Mpa, and is heated to T >=500 ℃;

B. above-mentioned waste gas is got into a wire chamber from air inlet through jet pipe; Produce underbalance effect; The wire chamber wall receives thermal excitation and the radiated infrared ripple of waste gas, the material of said wire chamber have can with the heat radiation infrared spectrum ω of emission molecule eigenfrequency spectrum ω o coupling resonance in the chamber;

When C. above-mentioned waste gas flows to exhaust outlet; Be obstructed in the place at silencer; Under the jet flow negative pressure guiding, get into the reflux cycle tracheae; Be back to said wire chamber through this pipe, with the waste gas impinging jet that spray to get into said wire chamber and form turbulent flow, this turbulent flow impacts is excited the emission molecule of resonance and makes its unidirectional decomposition.

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