CN106645548B - The analogy method of properties of catalyst - Google Patents
The analogy method of properties of catalyst Download PDFInfo
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- CN106645548B CN106645548B CN201510725590.9A CN201510725590A CN106645548B CN 106645548 B CN106645548 B CN 106645548B CN 201510725590 A CN201510725590 A CN 201510725590A CN 106645548 B CN106645548 B CN 106645548B
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/10—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using catalysis
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Abstract
The analogy method of the properties of catalyst of embodiment has: the process (101) of at least one in wind speed near the volume of odour component concentration, room, the rate of ventilation per unit time in room in the room before selecting the coating selected from photochemical catalyst, the steam vapour amount in room, the temperature in room, the illumination of coated face of photochemical catalyst and the coated face of photochemical catalyst as the environmental condition in the room of coating photocatalyst；The environmental condition in the room based on selection sets the process (102) of application conditions of at least one in the spreading area of coated face density and photochemical catalyst selected from photochemical catalyst as photochemical catalyst into room；And the process (103) of the odour component concentration in the room after the coating of the application conditions calculating photochemical catalyst of the environmental condition and photochemical catalyst of the basic performance, room based on photochemical catalyst.
Description
Technical field
Embodiments of the present invention are related to the analogy method of properties of catalyst.
Background technique
It has been known that there is photochemical catalyst in an atmosphere the light of equal irradiation specific wavelength when, in Surface Creation OH-Or O+Deng freedom
Base has the performance for decomposing the odour component for being present in periphery.Currently, the photochemical catalyst for playing performance when irradiating ultraviolet light is
Mainstream.In recent years, the functionization that the photochemical catalyst of the responsive to visible light type of performance is played when irradiating visible light is carrying out.It tastes
Examination, which has, will be seen that the photochemical catalyst of light response type is coated on the wall in room or every curtain etc. using the performance, in exposure cell when light
It will be present in indoor odour component and decompose removing.In turn, it is increased, will be had by the care to people's health or living environment
There is decomposition to result from indoor volatile organic compounds (Volatile Organic Compounds；VOC) or life is smelly
The built-in technology that the photochemical catalyst of the effect of reason substance is suitable for room is concerned.
About the performance evaluation of responsive to visible light type photochemical catalyst, such as in JIS R1751-2, JIS R1751-3, JIS
It is prescribed in R1751-4, JIS R1751-5 etc..It is standardized using the performance evaluation use of JIS (Japanese Industrial Specifications)
Small containers, carried out using the gas of the high concentration a good distance away with the actual indoor environment such as living space.Another party
Face, indoors when space coating photocatalyst big as space, the variation of illumination, indoor temperature or wind speed etc. is mainly former
Because existing.Therefore, photochemical catalyst is coated in indoor situation based on the evaluation result using JIS, being easy to produce can not obtain
To odour component desired decomposability or in order to obtain sufficient decomposability photochemical catalyst is excessively coated with and
As problem at high cost.In order to verify the properties of catalyst under actual indoor environment, need to be arranged and the ring to be coated with
The identical space in border verifies most suitable application conditions, needs very big cost and time.
Existing technical literature
Patent document
Patent document 1: special open 2007-333688 bulletin
Summary of the invention
The problem to be solved by the present invention is to provide can not spend cost and time and estimate actual indoor environment etc.
In photochemical catalyst performance properties of catalyst analogy method.
The analogy method of the properties of catalyst of embodiment is the room after photochemical catalyst is coated in room by presumption
The method of interior odour component concentration.The analogy method of embodiment has: selection is before by the coating of photochemical catalyst
Odour component concentration C b (unit in room；g/m3), the volume V (unit: m in room3), the ventilation per unit time in room
Steam vapour amount W (unit g/m in frequency n (unit: secondary/h), room3), temperature T in room (unit: DEG C), photochemical catalyst
Coated face the group that constitutes of illumination I (unit: lx) and wind speed S (unit: m/s) near the coated face of photochemical catalyst in
Process of at least one as the environmental condition in the room of coating photocatalyst；The environmental condition in the room based on selection, setting choosing
Coated face density Ad (the unit: g/m of free photochemical catalyst2) and photochemical catalyst spreading area Aa (unit: m2) constitute group in
Application conditions of at least one as process from photochemical catalyst to room；And the basic performance based on photochemical catalyst, room
Environmental condition and photochemical catalyst the odour component concentration C a that calculates in the room after the coating of photochemical catalyst of application conditions it is (single
Position: g/m3) process.
Detailed description of the invention
Fig. 1 is the figure for indicating the analogy method of properties of catalyst of embodiment.
Specific embodiment
Hereinafter, being illustrated to the mode of the analogy method of properties of catalyst for carrying out the present invention.Embodiment
Properties of catalyst analogy method be using such as photochemical catalyst coating before room in odour component concentration, room
Volume, room rate of ventilation per unit time, the steam vapour amount in room, the temperature in room, photochemical catalyst painting
The environmental condition in the rooms of coating photocatalysts such as the wind speed near the illumination of cloth cover, the coated face of photochemical catalyst, photochemical catalyst
Coated face density, photochemical catalyst the photochemical catalyst into room such as spreading area application conditions and photochemical catalyst cause
The photochemical catalysts such as the decomposition rate of odour component basic performance, be coated with the state model in the room of photochemical catalyst,
Thus the method for the odour component concentration in room after estimating the coating of photochemical catalyst.
Currently, having carried out being coated with the amount proportional to indoor spreading area based on the basic performance of photochemical catalyst
Photochemical catalyst etc. construction, but lead to the problem of and be unable to get target capabilities.In addition, low precision is determined in the calculation due to coating weight,
Therefore, the effective coating weight difficulty for determining photochemical catalyst to actual indoor environment is calculated.Therefore, in order to confirm that photochemical catalyst causes
Odour component discomposing effect (deodorizing effect), currently, carrying out implementing photocatalysis in a part of room of building
The tentative coating (construction) of agent judges the presence or absence of construction to building entirety and execution conditions etc. on this basis.But
For the actual environment of coating photocatalyst, the experimental enviroment of basic performance substantially is used to play properties of catalyst
The different situation of the illumination of condition, such as light.In turn, since in general interior, there are windows or door, accordingly, there exist the streams of air
It is dynamic.Flowing for air, it is contemplated that the spacious degree in room also affects.Even if by identical photochemical catalyst in certain condition
In the case where lower coating, since each room of the environment being coated with is different, it is thus impossible to uniformly play the effect of photochemical catalyst
Fruit.
The inventors of the present invention's discovery: in order in the actual indoor coating photocatalyst such as living space, obtain the effect of target,
It needs the indoor environment according to coating and different respective conditions is made to reflect and simulate in the performance of the photochemical catalyst of standard
Properties of catalyst.In the analogy method of the properties of catalyst of embodiment, the ring in the room based on coating photocatalyst
Border condition, to the application conditions of the photochemical catalyst in room and the basic performance of photochemical catalyst, after the coating for calculating photochemical catalyst
Therefore odour component concentration in room can precisely be imagined in the practically indoor environment of coating photocatalyst
Properties of catalyst (decomposability of odour component).
It therefore, can be by the properties of catalyst in actual indoor environment not against large-scale experimental facilities and empirical method
Then verify.Thus, it is possible to be appropriately setting for being set as the light of the odorousness of target in the room by coating photocatalyst
The application conditions of catalyst can not spend cost and time and effectively implement the coating of photochemical catalyst.In addition, to room
In the painting work of interior photochemical catalyst, therefore it can also can cut down light by coating photocatalyst under most suitable application conditions
The coating weight of catalyst and seek cost to reduce.In turn, by using the analogy method of embodiment as the built-in of photochemical catalyst
The promotional tools such as construction use, and can show smell reducing effect caused by photochemical catalyst to customer in advance, can include determining that
Whether there is or not implementing, photochemical catalyst is painted on interior and determines implementation content rapidly and successfully.
For the analogy method of the properties of catalyst of embodiment, it is described in detail referring to Fig.1.Firstly, selection is selected from light
Odour component concentration C b (unit: g/m in room before the coating of catalyst3), the volume V (unit: m in room3), room
Steam vapour amount W (unit: g/m in rate of ventilation n (unit: secondary/h) per unit time, room3), the temperature T in room
The illumination I (unit: 1x) of the coated face of (unit: DEG C), photochemical catalyst and wind speed S near the coated face of photochemical catalyst are (single
Position: m/s) at least one as coating photocatalyst room environmental condition (Fig. 1-101).The environment item in these rooms
Part as detailed in the following, is affected to the decomposition rate of the odour component in room, it is therefore preferable that selection is all
Above-mentioned each condition.Imagine the room of these environmental conditions practically coating photocatalyst, respectively the specific value of selection.
Odour component concentration C b in room before the coating of photochemical catalyst is when causing decomposition reaction using photochemical catalyst
Room in odour component concentration.It as the odour component in room, can enumerate: acetaldehyde, formaldehyde, toluene, dimethylbenzene, benzene
Deng volatile organic compounds (VOC) or ammonia, acetic acid, isovaleric acid (3 Methylbutanoic acid), nonenyl aldehyde, hydrogen sulfide etc. life
Smelly reason substance.The concentration of these substances is low, even if also treating as odour component in the case where not by human perception.?
In the highly concentrated situation of odour component, contacted with photochemical catalyst and frequency that odour component is decomposed increases, therefore, smell at
The decomposition rate divided is accelerated.In the case where the concentration of odour component is low, contacted with photochemical catalyst and what odour component was decomposed
Frequencies go lower, therefore, the decomposition rate of odour component are slack-off.
The volume V in room refers to the volume in the room of coating photocatalyst.Even if from the odour component of smell generating source
Rate of release it is identical, in the case that the volume V in room is big, odour component concentration is lower, in the small situation of the volume V in room
Under, odour component concentration increases.Therefore, odour component concentration C b changes, so, to point of odour component caused by photochemical catalyst
Solution speed affects.
The rate of ventilation n in room per unit time refers to until when the air inside room is all replaced required
Between inverse.It is identical even if from the rate of release of the odour component of smell generating source, in the case where more than the rate of ventilation n, gas
Taste constituent concentration is lower, and in the case where rate of ventilation n is few, odour component concentration is increased.Therefore, odour component concentration C b becomes
Change, so, it is affected to the decomposition rate of odour component caused by photochemical catalyst.
Steam vapour amount W in room is affected to the decomposability of odour component caused by photochemical catalyst.In the room
Steam vapour amount W it is few in the case where, the absorption property of photochemical catalyst increases, and the frequency that odour component is decomposed increases, therefore, gas
The decomposition rate of taste ingredient is accelerated.In the case that steam vapour amount W in the room is more, the absorption property of photochemical catalyst is reduced, gas
The frequencies go lower that taste ingredient is decomposed, therefore, the decomposition rate of odour component are slack-off.
Temperature T in room is affected to the decomposability of odour component caused by photochemical catalyst.Temperature in the room
In the case that degree T is low, the absorption property of photochemical catalyst increases, and the frequency that odour component is decomposed increases, therefore, odour component
Decomposition rate is accelerated.In the case where temperature T high in the room, the absorption property of photochemical catalyst is reduced, and odour component is decomposed
Frequencies go lower, therefore, the decomposition rate of odour component is slack-off.
The illumination I of the coated face of photochemical catalyst is affected to the decomposability of odour component caused by photochemical catalyst.?
In the case where the illumination I high of the coated face of photochemical catalyst, in the surface of photochemical catalyst OH generated-Or O+The amount of equal free radicals
Become more, the frequency that odour component is decomposed increases, and therefore, the decomposition rate of odour component is accelerated.In the coated face of photochemical catalyst
Illumination I it is low in the case where, OH-Or O+The quantitative change of equal free radicals is few, the frequencies go lower that odour component is decomposed, therefore, smell at
The decomposition rate divided is slack-off.
Wind speed S near the coated face of photochemical catalyst brings shadow to the decomposability of odour component caused by photochemical catalyst
It rings.In the case that wind speed S near the coated face of photochemical catalyst is fast, contacted with photochemical catalyst and frequency that odour component is decomposed
Rate increases, and therefore, the decomposition rate of odour component is accelerated.In the case that wind speed S near the coated face of photochemical catalyst is slow, with
Photochemical catalyst contact and frequencies go lower that odour component is decomposed, therefore, the decomposition rate of odour component is slack-off.
Odour component concentration of the analogy method of the properties of catalyst of embodiment in the room of coating photocatalyst
Cb is 0.01~200000 μ g/m3Range in the case where be effective, and then for 0.1~50000 μ g/m3Range feelings
It is more effective under condition.No matter odour component excessive concentration in room or too low, the presumption precision of properties of catalyst is all
There is the possibility of reduction.Similarly, the volume V in the room of coating photocatalyst is preferably 0.5~5000m3Range, more preferably
1~1000m3Range.
Then, the environmental condition in the room based on selection and its specific value (selective value), setting is selected from photochemical catalyst
Coated face density Ad (unit: g/m2) and photochemical catalyst spreading area Aa (unit: m2) at least one as photochemical catalyst
Application conditions (Fig. 1-102).The application conditions of these photochemical catalysts as detailed in the following, give the smell in room
The decomposition rate of ingredient affects, it is therefore preferable that the whole above-mentioned each conditions of selection.Room of these application conditions based on selection
Between environmental condition, the specific value of selection respectively.
The coated face density Ad of photochemical catalyst refers to the coating weight to the wall in room and the per unit area every curtain etc..
Even if coating weight is identical, in the case where coated face density Ad is low, contacted with photochemical catalyst and frequency that odour component is decomposed
It increases, therefore, the decomposition rate of odour component is accelerated, and in the case where coated face density Ad high, contacts and gas with photochemical catalyst
The frequencies go lower that taste ingredient is decomposed, therefore, the decomposition rate of odour component are slack-off.
The spreading area Aa of photochemical catalyst refers to the conjunction to the wall in room and the area every coating photocatalysts such as curtains
It counts (gross area).In the case where spreading area Aa is big, contacted with photochemical catalyst and frequency that odour component is decomposed increases, because
This, the decomposition rate of odour component is accelerated.In the case where spreading area Aa is small, contacted with photochemical catalyst and odour component is divided
The frequencies go lower of solution, therefore, the decomposition rate of odour component are slack-off.
In the analogy method of embodiment, as long as photochemical catalyst is the substance with photocatalyst activity, without spy
It does not limit, it is however preferred to have the photochemical catalyst substance of responding to visible light.As such photochemical catalyst substance, can enumerate containing
The substance of the metal oxides such as tungsten oxide, titanium oxide, zinc oxide, tin oxide, the more preferably substance containing tungsten oxide particle.It is right
Divided for photochemical catalyst, such as using photocatalyst particles are scattered in the aqueous dispersion of water representative or organic system
Dispersion liquid and the photocatalyst dispersion liquid formed or use are in photocatalyst dispersion liquid added with inorganic bond or organic viscous
The photocatalyst coating of adhesive ingredients as mixture, the wall being coated in room and every curtain etc..But photochemical catalyst
It's not limited to that for coating, can use various rubbing methods.
Then, the basic performance based on photochemical catalyst, in the environmental condition and process 102 in the room selected in process 101
The application conditions of the photochemical catalyst of setting, the odour component concentration C a (unit: g/ in the room after calculating the coating of photochemical catalyst
m3) (Fig. 1-103).Specifically, the environmental condition of basic performance, room based on photochemical catalyst and the coating of photochemical catalyst
Condition calculates the decomposition rate D (unit: g/h) (Fig. 1-103A) of odour component caused by photochemical catalyst, by the smell that calculates at
The environmental condition of the decomposition rate D and room that divide calculate the odour component concentration C a (Fig. 1-103B) after the coating of photochemical catalyst.
In the process 103B of the analogy method of embodiment, odour component concentration C a after the coating of photochemical catalyst can be with
It is calculated by following formulas (1).
Ca=Cb-D/ (V × n) ... (1)
In formula (1), Cb, D, V and n are all as described above, and Cb is that the odour component in the room before the coating of photochemical catalyst is dense
Degree, D are the decomposition rate of odour component caused by photochemical catalyst, and V is the volume in room, and n is the changing per unit time in room
Gas number.
Odour component concentration C a after the coating of photochemical catalyst according to from odour component generating source release effect, from room
The equilibrium state of the interior decomposition to odour component caused by outdoor gas exchange action and photochemical catalyst and determine.Here, light
The release speed of odour component before and after the coating of catalyst is indicated by following formula.
The air exchanging rate Eb before release speed Pb=coating before coating
Decomposition rate D caused by the air exchanging rate Ea+ photochemical catalyst after release speed Pa=coating after coating
When release speed before and after the coating of photochemical catalyst is set as certain (Pb=Pa), following formula is set up.
Eb=Ea+D
In the relationship of air exchanging rate and smell constituent concentration, following formulas is set up.
The odour component concentration C b × room volume V before air exchanging rate Eb=coating before coating × per unit time
The rate of ventilation n in room
The odour component concentration C a × room volume v after air exchanging rate Ea=coating after coating × per unit time
The rate of ventilation n in room
Cb × V × n=Ca × V × n+D
Odour component concentration C a by above-mentioned relation, after the coating of photochemical catalyst is found out by formula (1).
Ca=(Cb × V × n-D)/(V × n)
=Cb-D/ (V × n) ... (1)
In the process 103A of the analogy method of embodiment, the decomposition rate D of odour component caused by photochemical catalyst is
Correction factor p related with coated face density Ad, correction factor q related with spreading area Aa, have with odour component concentration C b
It is the correction factor r of pass, correction factor s related with steam vapour amount W, correction factor t related with temperature T, related with illumination I
The function of correction factor u and correction factor w related with wind speed S are indicated by following formulas (2).
D=f (p, q, r, s, t, u, w) ... (2)
The decomposition rate D of odour component caused by photochemical catalyst by odour component Standard Decomposition speed D0 (unit: g/h)
It is found out with the correction factor of above-mentioned each parameter, specifically, can be calculated by following formulas (3).
D=D0 × p × q × r × s × t × u × w... (3)
The Standard Decomposition speed D0 of odour component refers to: setting coated face density Ad, spreading area Aa, odour component concentration
The standard conditions of each parameter of Cb, steam vapour amount W, temperature T, illumination I, wind speed S, and the experiment based on these standard conditions
The Standard Decomposition speed of obtained odour component.In the decomposition rate D for imagining odour component caused by the photochemical catalyst under environment
Coated face density Ad, spreading area Aa, odour component concentration C b, steam vapour amount W, temperature T, illumination I and wind speed S can be given
Properties of catalyst bring influences to find out as coefficient, by correcting the Standard Decomposition speed D0 of odour component.
The correction factor of above-mentioned each parameter is found out as follows.Firstly, in the Standard Decomposition speed of odour component in order to obtain
D0 and under the standard conditions of each parameter that use, only make the Parameters variation for finding out correction factor and the decomposition speed that measures odour component
Degree obtains the decomposition rate of odour component and finds out the relational expression of the parameter of correction factor.Amendment is found out by relational expression calculating
The setting value of the parameter of coefficient or the decomposition rate Dn of the odour component in selective value, according to the decomposition rate Dn of odour component and
The ratio of Standard Decomposition speed D0 determines correction factor.Specific correction factor to find out method as described below.
Correction factor p related with coated face density Ad indicates gas caused by photochemical catalyst when changing coated face density
Ratio of the decomposition rate D1 of taste ingredient relative to Standard Decomposition speed D0 is calculated by following formulas (4).The decomposition of odour component
Speed D1 specifically finds out the decomposition rate of odour component and the pass of coated face density by the experiment for changing coated face density
It is formula, is calculated by the relational expression as the value in the setting value of coated face density Ad.
P=D1/D0... (4)
Correction factor q related with spreading area Aa indicate smell caused by photochemical catalyst when changing spreading area at
Ratio of the decomposition rate D2 divided relative to Standard Decomposition speed D0, is calculated by following formulas (5).The decomposition rate of odour component
D2 specifically finds out the decomposition rate of odour component and the relational expression of spreading area by the experiment for changing spreading area, by this
Relational expression is calculated as the value in the setting value of spreading area Aa.
Q=D2/D0... (5)
Correction factor r related with odour component concentration C b indicates that photochemical catalyst when changing odour component concentration causes
Odour component ratio of the decomposition rate D3 relative to Standard Decomposition speed D0, calculated by following formulas (6).Odour component
Decomposition rate D3 is specifically found out the decomposition rate and odour component of odour component by the experiment for changing odour component concentration
The relational expression of concentration is calculated by the relational expression as the value in the setting value of odour component concentration C b.
R=D3/D0... (6)
Correction factor s related with steam vapour amount W indicate smell caused by photochemical catalyst when changing steam vapour amount at
Ratio of the decomposition rate D4 divided relative to Standard Decomposition speed D0, is calculated by following formulas (7).The decomposition rate of odour component
D4 specifically finds out the decomposition rate of odour component and the relational expression of steam vapour amount by the experiment for changing steam vapour amount, by this
Relational expression is calculated as the value in the setting value of vapor volume W.
S=D4/D0... (7)
Correction factor t related with temperature T indicates the decomposition of odour component caused by photochemical catalyst when making temperature change
Ratio of the speed D5 relative to Standard Decomposition speed D0 is calculated by following formulas (8).The decomposition rate D5 of odour component it is specific and
Speech is by making the experiment of temperature change find out the decomposition rate of odour component and the relational expression of temperature, by the relational expression as temperature T
Setting value in value calculate.
T=D5/D0... (8)
Correction factor u related with illumination I indicates the decomposition of odour component caused by photochemical catalyst when making illumination change
Ratio of the speed D6 relative to Standard Decomposition speed D0 is calculated by following formulas (9).The decomposition rate D6 of odour component it is specific and
Speech is by making the experiment of illumination change find out the decomposition rate of odour component and the relational expression of illumination, by the relational expression as illumination I
Setting value in value calculate.
U=D6/D0... (9)
Correction factor w related with wind speed S indicates the decomposition of odour component caused by photochemical catalyst when changing wind speed
Ratio of the speed D7 relative to Standard Decomposition speed D0 is calculated by following formulas (10).The decomposition rate D7 of odour component is specific
For by make wind speed change experiment find out the decomposition rate of odour component and the relational expression of wind speed, by the relational expression as wind speed
Value in the setting value of S calculates.
W=D7/D0... (10)
As described above, the environmental condition of basic performance, room based on photochemical catalyst and the application conditions of photochemical catalyst,
As formula (2) calculate photochemical catalyst caused by odour component decomposition rate D, the decomposition rate D of the odour component based on calculating and
The environmental condition in room, the odour component concentration C a after the coating of photochemical catalyst is calculated by formula (1).The odour component of calculating is dense
Ca is spent compared with a reference value of odour component concentration, determines the quality (Fig. 1-104) of the application conditions of photochemical catalyst.If calculated
Odour component concentration C a be lower than odour component concentration a reference value, then may determine that the application conditions and room for photochemical catalyst
Environmental condition it is corresponding.Therefore, by such a situa-tion in actual room coating photocatalyst, odour component is good
It ground and carries out being decomposed into possibility with suitable cost.
Embodiment
Then, embodiment and its evaluation result are described.
(embodiment 1)
It is 160 μ g/m in the acetaldehyde concentration as odour component concentration C b3, room volume V be 24.3m3(long 3.6m ×
Wide 2.7m × high 2.5m), the rate of ventilation n per unit time in room be 0.5 time/h, the steam vapour amount W in room is
9000mg/m3, the temperature T in room be 20 DEG C, the illumination I of metope (coated face of photochemical catalyst) is 1000lx, near metope
Wind speed S be 0.20m/s in the environment of, by photochemical catalyst coated face density Ad be 0.3g/m2, spreading area Aa be 31.5m2
Under conditions of when being coated on the inner wall in room, whether simulation can be set as acetaldehyde concentration the index value 55 of Japanese hygienic Ministry of Labour
μg/m3Below.
Firstly, as the infrastest for exporting Standard Decomposition speed D0, in glass substrate (long 50mm × wide 100mm
× thickness 0.01mm) on the solid content of per unit area become 15g/m2Mode be coated with the oxidation as photochemical catalyst
Tungsten particle 75mg and make sample, be set to internal volume be 3L sealing container in.Then, one side irradiation light uses fan on one side
Make the air circulation in container.The illumination on sample at this time is 6000lx, wind speed 0.10m/s.In addition, the temperature in container
It is 18 DEG C, steam vapour amount 1000mg/m3.18160 μ g/m are become with concentration into the container3Mode put into acetaldehyde, measurement mark
Quasi- decomposition rate D0.As a result, Standard Decomposition speed D0 is 3512 μ g/h.
Then, in the parameter set by above-mentioned infrastest, in 0~30g/m2In the range of change photochemical catalyst
Coated face density, measure the decomposition rate of respective acetaldehyde.By the experiment, obtain it is following shown in acetaldehyde decomposition rate
The relational expression of the coated face density X of D and photochemical catalyst.Calculating coated face density Ad by following relational expressions is 0.3g/m2When
Decomposition rate D1.Decomposition rate D1 is 72.1 μ g/h.By these decomposition rates D1 and Standard Decomposition speed D0, above-mentioned formula is utilized
(4) export correction factor p is 0.021.
D=-2.76X2+241.1X
In the parameter set by above-mentioned infrastest, the spreading area of photochemical catalyst is only made to change and measure and decompose
Speed, operation similar to the above obtain the relational expression of decomposition rate and spreading area.Spreading area Aa is calculated by the relational expression
For 31.5m2When decomposition rate D2, and then be 6312.8 by above-mentioned formula (5) export correction factor q.
In the parameter set by above-mentioned infrastest, the initial concentration of acetaldehyde is only made to change and measure and decompose speed
Degree, operation similar to the above obtain the relational expression of decomposition rate and initial concentration.Calculating initial concentration Cb by the relational expression is
160μg/m3When decomposition rate D3, and then be 0.020 by above-mentioned formula (6) export correction factor r.
In the parameter set by above-mentioned infrastest, steam vapour amount is only made to change and measure decomposition rate, and it is upper
Same operation is stated, the relational expression of decomposition rate and steam vapour amount is obtained.Calculating steam vapour amount W by the relational expression is 9000mg/
m3When decomposition rate D4, and then be 0.794 by above-mentioned formula (7) export correction factor s.
In the parameter set by above-mentioned infrastest, only makes temperature change and measure decomposition rate, and it is above-mentioned same
The operation of sample obtains the relational expression of decomposition rate and temperature.Decomposition rate D5 when temperature T is 20 DEG C is calculated by the relational expression,
And then exporting correction factor t by above-mentioned formula (8) is 0.999.
In the parameter set by above-mentioned infrastest, only makes illumination change and measure decomposition rate, and it is above-mentioned same
The operation of sample obtains the relational expression of decomposition rate and illumination.Decomposition rate when illumination I is 1000lx is calculated by the relational expression
D6, and then be 0.169 by above-mentioned formula (9) export correction factor u.
In the parameter set by above-mentioned infrastest, changes the rotation speed of fan, only make the wind speed on sample
Change and measure decomposition rate, operation similar to the above obtains the relational expression of decomposition rate and wind speed.It is calculated by the relational expression
Decomposition rate D7 when wind speed S is 0.20m/s, and then be 1.025 by above-mentioned formula (10) export correction factor w.
Correction factor and Standard Decomposition speed D0 by each parameter obtained in this way calculate acetaldehyde using above-mentioned formula (2)
Decomposition rate D.As a result, the decomposition rate D of the acetaldehyde under selecting environment and imposing a condition is 1279 μ g/h.By point of acetaldehyde
Solve the volume V (24.3m of speed D (1279 μ g/h), room3) and room rate of ventilation n (0.5 time/h) per unit time,
The odour component concentration C a in room after calculating the coating of photochemical catalyst using above-mentioned formula (1).As a result, photochemical catalyst
Odour component concentration C a after coating is 54.7 μ g/m3.It is possible thereby to simulate: if light of constructing under this application conditions is urged
The index value of hygienic Ministry of Labour then may be implemented in agent.
Then, in above-mentioned indoor environment, measurement is under above-mentioned application conditions after practical coating photocatalyst
Acetaldehyde concentration.As a result, the acetaldehyde concentration in actual indoor environment is 53.9 μ g/m3.The result of the measurement result and simulation
It is sufficiently consistent, demonstrate the properness of the analogy method of embodiment.
(embodiment 2)
In total volatile organic compounds (the Total Volatile Organic as odour component concentration C b
Compounds:TVOC concentration) is 440 μ g/m3, room volume V be 44.3m3, room rate of ventilation per unit time
N is 0.3 time/h, the steam vapour amount W in room is 10690mg/m3, the temperature T in room be 21 DEG C, metope (photochemical catalyst
Coated face) illumination I be 500lx, in the environment of the wind speed S near metope is 0.15m/s, simulation is by photochemical catalyst in coated face
Density Ad is 0.2g/m2, spreading area Aa be 63m2Under conditions of the case where being coated on room interior.
Firstly, as the infrastest for exporting Standard Decomposition speed D0, in glass substrate (long 50mm × wide 100mm
× thickness 1mm) on the solid content of per unit area become 15g/m2Mode be coated with the tungsten oxide as photochemical catalyst
Particle 75mg and make sample, be set to internal volume be 3L sealing container in.Then, one side irradiation light is made with fan on one side
Air circulation in container.The illumination on sample at this time is 6000lx, wind speed 0.10m/s.In addition, the temperature in container is
18 DEG C, steam vapour amount 1000mg/m3.42000 μ g/m are become with concentration into the container3Mode put into TVOC, measure standard
Decomposition rate D0.As a result, Standard Decomposition speed D0 is 3210 μ g/h.
Then, in the parameter that above-mentioned infrastest is set, in 0~30g/m2In the range of change photochemical catalyst painting
Cloth surface density measures the decomposition rate of respective TVOC.By the experiment, obtain it is following shown in TVOC decomposition rate D and
The relational expression of the coated face density X of photochemical catalyst.Calculating coated face density Ad by following relational expressions is 0.2g/m2When decomposition
Speed D1.Decomposition rate D1 is 47.6 μ g/h.By decomposition rate D1 and Standard Decomposition speed D0, led using above-mentioned formula (4)
Correction factor p is 0.015 out.
D=-2.71X2+238.4X
In the parameter that above-mentioned infrastest is set, the spreading area of photochemical catalyst is only made to change and measure and decompose speed
Degree, operation similar to the above obtain the relational expression of decomposition rate and spreading area.Calculating spreading area Aa by the relational expression is
63m2When decomposition rate D2, and then be 12625.6 by above-mentioned formula (5) export correction factor q.
In the parameter that above-mentioned infrastest is set, the initial concentration of TVOC is only made to change and measure decomposition rate, with
Above-mentioned same operation, obtains the relational expression of decomposition rate and initial concentration.Calculating initial concentration Cb by the relational expression is 440 μ
g/m3When decomposition rate D3, and then be 0.023 by above-mentioned formula (6) export correction factor r.
In the parameter that above-mentioned infrastest is set, steam vapour amount is only made to change and measure decomposition rate, and it is above-mentioned same
The operation of sample obtains the relational expression of decomposition rate and steam vapour amount.Calculating steam vapour amount W by the relational expression is 10690mg/m3When
Decomposition rate D4, and then be 0.730 by above-mentioned formula (7) export correction factor s.
In the parameter that above-mentioned infrastest is set, only makes temperature change and measure decomposition rate, it is similar to the above
Operation, obtains the relational expression of decomposition rate and temperature.Decomposition rate D5 when temperature T is 21 DEG C is calculated by the relational expression, in turn
It is 0.999 by above-mentioned formula (8) export correction factor t.
In the parameter that above-mentioned infrastest is set, only makes illumination change and measure decomposition rate, it is similar to the above
Operation, obtains the relational expression of decomposition rate and illumination.Decomposition rate D6 when illumination I is 500lx is calculated by the relational expression, in turn
It is 0.085 by above-mentioned formula (9) export correction factor u.
In the parameter that above-mentioned infrastest is set, changes the rotation speed of fan, only change the wind speed on sample
And decomposition rate is measured, operation similar to the above obtains the relational expression of decomposition rate and wind speed.Wind speed is calculated by the relational expression
Decomposition rate D7 when S is 0.15m/s, and then be 1.014 by above-mentioned formula (10) export correction factor w.
Correction factor and Standard Decomposition speed D0 by each parameter obtained in this way calculate TVOC using above-mentioned formula (2)
Decomposition rate D.As a result, the decomposition rate D of the TVOC under selecting environment and imposing a condition is 879 μ g/h.By point of TVOC
Solve the volume V (44.3m of speed D (879 μ g/h), room3) and room rate of ventilation n (0.3 time/h) per unit time, benefit
The odour component concentration C a in room after calculating the coating of photochemical catalyst with above-mentioned formula (1).As a result, the painting of photochemical catalyst
Odour component concentration C a after cloth is 374 μ g/m3.It is the coating of photochemical catalyst by the odour component concentration C a that the simulation obtains
Preceding odour component concentration C b (440 μ g/m3) about 82%.
Then, it in above-mentioned indoor environment, measures after the above-mentioned practical coating photocatalyst of application conditions
TVOC concentration.As a result, the TVOC concentration under actual indoor environment is 360 μ g/m3, for the smell before the coating of photochemical catalyst
About the 82% of constituent concentration.The measurement result and the result of simulation are sufficiently consistent, demonstrate the appropriate of the analogy method of embodiment
Property.
(comparative example 1)
Environmental condition (acetaldehyde concentration=160 μ g/m in room same as Example 13, room volume=24.3m3、
Rate of ventilation=0.5 time per unit time/the h in room, illumination=1000lx of metope, wind speed=0.2m/ near metope
S, temperature=20 DEG C in room, steam vapour amount=9000mg/m in room3) under, acetaldehyde concentration is set as 55 μ g/m3With
For the purpose of lower, do not simulated in advance, in 4 metope (areas=31.5m2) on coated face density 0.1g/m2It is coated with photocatalysis
Agent.The acetaldehyde concentration after coating photocatalyst is measured, result is 128 μ g/m3, do not reach target value.
It is explained, several embodiments of the invention are described, but these embodiments carry out as an example
Prompt has no intent to the range for limiting invention.These new embodiments can be implemented in a manner of various other various kinds, can be with
Various omissions, displacement, change are carried out without departing from the spirit of the invention.These embodiments or its deformation are included in invention
Scope and spirit in, while being included in the invention described in the claims and its equivalent range.
Claims (9)
1. the analogy method of properties of catalyst estimates the gas in the room after photochemical catalyst is coated in room
Taste constituent concentration, has:
It is the volume V of odour component concentration C b, the room in the room before selecting the coating of the photochemical catalyst, described
Rate of ventilation n per unit time, the steam vapour amount W in the room, the temperature T in the room, the light in room are urged
Wind speed S near the illumination I of the coated face of agent and the coated face of the photochemical catalyst is as the institute for being coated with the photochemical catalyst
The process for stating the environmental condition in room, the unit of the odour component concentration C b are g/m3, the unit of the volume V is m3, described
The unit of rate of ventilation n is secondary/h, and the unit of the steam vapour amount W is g/m3, the unit of the temperature T is DEG C the illumination I
Unit be lx and the unit of the wind speed S is m/s；
The environmental condition in the room based on selection sets the coated face density Ad and the photochemical catalyst of the photochemical catalyst
Application conditions of the spreading area Aa as process from the photochemical catalyst to the room, the list of the coated face density Ad
Position is g/m2And the unit of the spreading area Aa is m2；
The environmental condition of basic performance, the room based on the photochemical catalyst and the application conditions of the photochemical catalyst are calculated
The process of the decomposition rate D of the odour component caused by the photochemical catalyst out, the unit of the decomposition rate D are g/h, with
And
After the environmental condition of decomposition rate D and the room based on the odour component calculate the coating of the photochemical catalyst
The process of odour component concentration C a in the room, the unit of the odour component concentration C a are g/m3。
2. analogy method according to claim 1 has following process: by the gas in the room of the calculating
Taste constituent concentration Ca determines the institute of the photochemical catalyst compared with a reference value of the odour component concentration in the room
State the good no of the coated face density Ad and spreading area Aa.
3. analogy method according to claim 1, wherein calculate the coating of the photochemical catalyst based on following formulas (1)
Odour component concentration C a in the room afterwards,
Ca=Cb-D/ (V × n) ... (1)
In formula (1), Cb is the odour component concentration in the room before the coating of the photochemical catalyst, and D is the photocatalysis
The decomposition rate of the odour component caused by agent, V are the volume in the room, and n is the changing per unit time in the room
Gas number.
4. analogy method according to claim 3, wherein calculated caused by the photochemical catalyst based on following formulas (2)
The decomposition rate D of the odour component,
D=f (p, q, r, s, t, u, w) ... (2)
In formula (2), p is correction factor related with the coated face density Ad, and q is amendment related with the spreading area Aa
Coefficient, r are correction factor related with the odour component concentration C b, and s is correction factor related with the steam vapour amount W, t
For correction factor related with the temperature T, u is correction factor related with the illumination I, and w is related with the wind speed S
Correction factor.
5. analogy method according to claim 3, wherein calculated caused by the photochemical catalyst based on following formulas (3)
The decomposition rate D of the odour component,
D=D0 × p × q × r × s × t × u × w... (3)
In formula (3), D0 is the Standard Decomposition speed of the odour component caused by the photochemical catalyst, and p is and the coated face
The related correction factor of density Ad, q are correction factor related with the spreading area Aa, and r is and the odour component concentration
The related correction factor of Cb, s are correction factor related with the steam vapour amount W, and t is amendment related with temperature T system
Number, u are correction factor related with the illumination I, and w is correction factor related with the wind speed S.
6. analogy method according to claim 5, wherein calculate the correction factor p based on following formulas (4), be based on
Following formulas (5) calculates the correction factor q, the correction factor r is calculated based on following formulas (6), based on following formulas (7)
Calculate the correction factor s, the correction factor t calculated based on following formula (8), based on following formulas (9) calculate described in repair
Positive coefficient u, and the correction factor w is calculated based on following formulas (10),
P=D1/D0... (4)
In formula (4), the decomposition rate of the calculated odour component and described when D1 is by changing the coated face density
The decomposition rate of the odour component under the setting value for the coated face density Ad that the relational expression of coated face density calculates,
Q=D2/D0... (5)
In formula (5), the decomposition rate of odour component D2 calculated when being by making spreading area variation and the painting
The decomposition rate of the odour component under the setting value for the spreading area Aa that the relational expression of cloth area calculates,
R=D3/D0... (6)
In formula (6), D3 is by the decomposition rate for the odour component for keeping the odour component concentration calculated when changing and institute
State the decomposition speed of the odour component of the selective value of the odour component concentration C b of the relational expression calculating of odour component concentration
Degree,
S=D4/D0... (7)
In formula (7), D4 is the decomposition rate and the water of the odour component by keeping the steam vapour amount calculated when changing
The decomposition rate of the odour component under the selective value for the steam vapour amount W that the relational expression of vapor volume calculates,
T=D5/D0... (8)
In formula (8), the decomposition rate of the calculated odour component and the temperature when D5 is by making the temperature change
The decomposition rate of the odour component under the selective value for the temperature T that relational expression calculates,
U=D6/D0... (9)
In formula (9), the decomposition rate of the calculated odour component and the illumination when D6 is by making the illumination change
The decomposition rate of the odour component under the selective value for the illumination I that relational expression calculates,
W=D7/D0... (10)
In formula (10), D7 is the decomposition rate and the wind speed of the odour component by keeping the wind speed calculated when changing
The decomposition rate of the odour component under the selective value for the wind speed S that relational expression calculates.
7. analogy method according to claim 1, wherein the odour component be selected from by volatile organic compounds and
Smelly causer texture of living at group in it is at least one kind of.
8. analogy method according to claim 1, wherein the odour component concentration before the coating of the photochemical catalyst
Cb is 0.01 μ g/m3Above and 200000 μ g/m3Below.
9. analogy method according to claim 1, wherein the volume V in the room is 0.5m3Above and 5000m3Below.
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