CN109689117B - Odor conversion method - Google Patents
Odor conversion method Download PDFInfo
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- CN109689117B CN109689117B CN201780047097.3A CN201780047097A CN109689117B CN 109689117 B CN109689117 B CN 109689117B CN 201780047097 A CN201780047097 A CN 201780047097A CN 109689117 B CN109689117 B CN 109689117B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/01—Deodorant compositions
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/16—Ethers
- C10M129/20—Cyclic ethers having 4 or more ring atoms, e.g. furans, dioxolanes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/26—Carboxylic acids; Salts thereof
- C10M129/48—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring
- C10M129/54—Carboxylic acids; Salts thereof having carboxyl groups bound to a carbon atom of a six-membered aromatic ring containing hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/20—Thiols; Sulfides; Polysulfides
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- Animal Behavior & Ethology (AREA)
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- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Lubricants (AREA)
Abstract
The invention provides an odor conversion method, which can convert unpleasant odor generated when a sanitary vehicle sucks and discharges excrement from a toilet into different odors and easily reduce harm caused by the odor. The invention provides an odor conversion method, which is characterized by comprising the following steps: a step of depressurizing a feces-urine tank of a sanitary vehicle by a vacuum pump and sucking excrement from a hose connected to the feces-urine tank; and/or a step of pressurizing the aforementioned feces-urine tank by means of a vacuum pump and discharging excrement from a hose connected to the aforementioned feces-urine tank, wherein the lubricating oil used in the aforementioned vacuum pump contains an odor conversion oil agent.
Description
Technical Field
The invention relates to an odor conversion method.
Background
At present, the bad smell generated when the excrement is extracted from the toilet by using the sanitary vehicle (vacuum vehicle) becomes a problem. Generally, when excrement is sucked by a sanitary vehicle, the pressure in a tank for excrement is reduced by a vacuum pump, and the excrement is sucked into the tank for excrement from a hose connected to the tank for excrement. When discharging excrement, the vacuum pump pressurizes the excrement tank, and the excrement is discharged from the excrement tank through a hose connected to the excrement tank.
When the excrement is sucked or discharged, the air containing the malodor in the excrement tank is discharged to the outside, and an unpleasant feeling is given to an operator and neighboring residents, which is problematic.
In particular, when the excrement is sucked, the air containing the offensive odor in the excrement tank needs to be sucked by the vacuum pump from the upper part of the excrement tank to be decompressed and then exhausted to the outside through the vacuum pump. In the exhaust, deodorization is performed by a deodorizer (filter) disposed at the exhaust port of the feces-urine tank, but there is a problem that the reduction of the offensive odor is insufficient.
As a means for reducing the above-mentioned offensive odor, there has been proposed a vacuum vehicle deodorization device including a water replenishing tank for storing circulating water mixed with a deodorizer in a circulation line of a vacuum pump when the vacuum pump provided in a piping system leading from a feces tank of the vacuum vehicle to the atmosphere is operated to pump the feces and urine, and a deodorization method using caustic soda or sodium hypochlorite as the deodorizer (for example, see patent document 1).
However, there are problems as follows: it is difficult to completely eliminate the offensive odor of excrement such as feces and urine, and the method using the deodorizing agent as described above cannot sufficiently deodorize the offensive odor.
Further, the above-mentioned deodorizing method requires a water replenishing tank for storing circulating water mixed with a deodorizing agent or circulating equipment for circulating the circulating water, and thus has a problem that a large-scale apparatus is required.
Therefore, it is desired to develop a means for easily reducing unpleasant odor generated when excreta is sucked and discharged from a toilet by a sanitary vehicle.
Documents of the prior art
Patent document
Patent document 1: japanese examined patent publication (Kokoku) No. 4-2229
Disclosure of Invention
Technical problem to be solved by the invention
An object of the present invention is to provide an odor conversion method capable of converting unpleasant odor generated when excreta are sucked and discharged from a toilet using a sanitary vehicle into different odors, thereby easily reducing harm caused by the odors.
Means for solving the problems
As a result of extensive and intensive studies, the inventors of the present invention have found that, if a lubricating oil used in a vacuum pump for performing pressure reduction and pressurization in a septic tank of a sanitary vehicle is configured to contain an odor conversion oil agent, by passing air through the vacuum pump, the odor can be converted into a different odor by the action of the odor conversion oil agent in the lubricating oil, and the odor can be converted into another odor that is not unpleasant, and the unpleasant feeling due to the odor of excrement can be sufficiently reduced, thereby completing the present invention.
That is, the present invention relates to the following odor conversion method.
1. A method of odor conversion, comprising: a step of depressurizing a feces-urine tank of a sanitary vehicle by a vacuum pump and sucking excrement from a hose connected to the feces-urine tank; and/or a step of pressurizing the excrement tank by a vacuum pump and discharging excrement from a hose connected to the excrement tank,
the lubricating oil for the vacuum pump contains an odor conversion oil agent.
2. The odor conversion method according to item 1, wherein the odor conversion oil agent contains an odor conversion component and an oil agent component.
3. The odor conversion method according to item 2, wherein the odor conversion component contains at least one oxygen-containing heterocyclic compound selected from the group consisting of furan compounds and pyran compounds.
4. The odor conversion method according to item 3, wherein the odor is converted into 100% by mass, and the content of the oxygen-containing heterocyclic compound is 1 to 20% by mass.
5. The odor conversion method according to item 3 or 4, wherein the furan compound is a compound selected from the group consisting of dimethylhydroxyfuranone (Furanol), furfural, 5-methylfurfural, furfuryl thiol, furfuryl alcohol, 2-propionyl furan, 2-ethyl furan, menthofuran, 2-methyl-3-furanthiol, 2-methyl-3-tetrahydrofuranethiol, 2-methyl-4, 5-dihydro-3-furanthiol, 2-methylfuran, 2-methyltetrahydrofuran, 2-hexanoyl furan, 2-pentyl furan, 2-propyl furan, 2- (3-phenylpropyl) tetrahydrofuran, 2, 3-dihydrobenzofuran, 2, 4-dimethyl-4-phenyltetrahydrofuran, 2-furfuryl-5-methylfuran, 2-heptyl furan, 2-methylbenzofuran, 2-methyl-5-propionyl furan, 2- (5-vinyl-5-methyltetrahydrofuran-2-yl) -propionaldehyde, and 2- (5-vinyl-5-methyltetrahydrofuran-2-yl) -propionaldehyde, 3- { [ 2-methyl- (2 or 4), 5-dihydro-3-furanyl ] thio } -2-methyltetrahydrofuran-3-thiol, 2-vinyl-5-isopropenyl-2-methyltetrahydrofuran, 5-methyl-2-furanmethanethiol, 6-methyl-2, 3-dihydrothieno [2, 3-c ] furan, 2, 5-dimethoxytetrahydrofuran, 3-acetyl-2, 5-dimethylfuran, 2-acetyl-5-methylfuran, 2-acetylfuran, 2-butylfuran, 2, 5-diethyltetrahydrofuran, difurfuryl disulfide, difurfuryl ether, difurfuryl sulfide and 2, 5-dimethyl-3-furanthiol.
6. The odor conversion method according to any one of items 3 to 5, wherein the odor is converted to 100% by mass, and the content of the furan compound is 0.1 to 10% by mass.
7. The odor conversion method according to any one of items 3 to 6, wherein the pyran compound is selected from the group consisting of Maltol (Maltol), ethyl Maltol, 4-acetoxy-3-pentyltetrahydropyran, 3, 5-dihydroxy-6-methyl-2, 3-dihydro-4 (4H) -pyrone, 6-vinyl-2, 2, 6-trimethyltetrahydropyran, 5-methyl-3-butyltetrahydropyran-4-ylacetate, octahydro-2H-1-benzopyran-2-one, 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran, theaspirane, grapospirane (ispirane), (2S,4aR,8aS) -2, 5,5,8 a-tetramethyl-3, 4,4a,5,6,8 a-hexahydro-2H-1-benzopyran, 6-vinyl-2, 2, 6-trimethyltetrahydro-3 (4H) -pyrone, At least 1 of 6-hydroxy dihydrotheaspirane, 6-acetoxy dihydrotheaspirane and 2, 6-diethyl-5-isopropyl-2-methyltetrahydro-2H-pyran.
8. The odor conversion method according to any one of items 3 to 7, wherein the odor is converted to 100% by mass, and the pyran compound is contained in an amount of 1 to 10% by mass.
9. The odor converting method according to any one of items 3 to 8, wherein the odor converting component further contains a vanillin-based compound.
10. The method for converting odor according to item 9, wherein the vanillin-based compound is at least one compound selected from the group consisting of vanillin, ethyl vanillin, acetaldehyde ethyl vanillin acetal (acetaldehydyl vanillin acetate), vanillin acetate, ethyl vanillin isobutyrate, vanilla ethanone (acetovanillone), ethyl vanillyl acid ester, ethyl vanillin propylene glycol acetal, methyl vanillin oxalate, vanillic acid, vanillin isobutyrate, butyl vanillin oxalate, vanillin 2, 3-butanediol acetal, and vanillin lactate.
11. The method of changing odor according to item 9 or 10, wherein the odor is changed to 100% by mass, and the content of the vanillin-based compound is 5 to 25% by mass.
12. The odor conversion method according to any one of items 2 to 11, wherein the oil component contains a nonionic surfactant.
13. The odor conversion method according to any one of items 2 to 11, wherein the oil component contains at least one fatty acid ester nonionic surfactant selected from the group consisting of a glycerin fatty acid ester nonionic surfactant, a sorbitan fatty acid ester nonionic surfactant, a polyoxyethylene sorbitan fatty acid ester nonionic surfactant, and a polyoxysorbitol fatty acid ester nonionic surfactant.
14. The odor converting method according to any one of claims 2 to 11, wherein the oil component contains at least one selected from the group consisting of glycerol monooleate, sorbitan monolaurate, sorbitan monooleate, sorbitan trioleate, sorbitan sesquioleate, polyoxyethylene sorbitan monooleate and polyoxyethylene sorbitan trioleate.
15. The odor conversion method according to any one of items 2 to 14, wherein the HLB of the oil component is 11.0 or less.
16. The odor conversion method according to any one of items 2 to 15, wherein the odor is converted into 100 parts by mass, and the content of the oil component is 10 to 400 parts by mass.
17. The odor conversion method according to any one of claims 1 to 16, wherein a content of the oil agent for odor conversion in the lubricating oil is 0.01 to 99 vol%.
Effects of the invention
The odor conversion method of the present invention can convert unpleasant odor generated when excreta are sucked and discharged from a toilet by a sanitary vehicle into different odors so that other odors that are not unpleasant are felt and the unpleasant feeling caused by the offensive odor of the excreta is easily reduced.
Detailed Description
The method for converting odor of the present invention will be described in detail below.
The odor conversion method of the present invention comprises: a step of depressurizing a feces-urine tank of a sanitary vehicle by a vacuum pump and sucking excrement from a hose connected to the feces-urine tank; and/or a step of pressurizing the aforementioned feces-urine tank by means of a vacuum pump and discharging excrement from a hose connected to the aforementioned feces-urine tank, wherein the lubricating oil used in the aforementioned vacuum pump contains an odor conversion oil agent.
The sanitary vehicle is not particularly limited, and a conventionally known sanitary vehicle can be used. Such sanitary vehicles are usually provided with a tank for receiving the sucked excrement, to which a hose for sucking and discharging the excrement is connected. The sanitary vehicle is also provided with a vacuum pump for depressurizing and pressurizing the tank for containing the excrement and urine.
The excrement is sucked from a toilet or the like by a step of depressurizing a excrement tank of the sanitary car by a vacuum pump to suck the excrement from a hose connected to the excrement tank. At this time, the pressure reduction causes the foul air in the tank to be sucked from a position where it is difficult to suck the excrement, such as the upper part of the tank. The air passes through the vacuum pump via a pipe and is exhausted from the exhaust port. A deodorizer is generally provided at the front end of the exhaust port, and the air containing malodor is discharged to the outside through the deodorizer.
The vacuum pump is not particularly limited as long as it is a vacuum pump using a lubricating oil for operation, and examples thereof include a vane pump and the like. When the vacuum pump is operated, the air containing the odor contacts with the lubricating oil in the vacuum pump when passing through the vacuum pump. In the odor conversion method of the present invention, since the lubricating oil contains the odor conversion oil agent, unpleasant odor of excrement and urine is converted into different odor upon contact with the lubricating oil, and the risk due to the odor is easily reduced.
The odor conversion method of the present invention may comprise: and pressurizing the excrement tank by a vacuum pump, and discharging excrement from a hose connected to the excrement tank. In the above-described process, normally, air is sent from the vacuum pump into the excrement tank and the excrement tank is pressurized, but when the air flows backward, the air containing malodor passes from the excrement tank through the vacuum pump and contacts the lubricating oil. In the odor conversion method of the present invention, even when the air containing malodor is discharged from the exhaust port by the vacuum pump in reverse flow in the above-described step, the lubricating oil contains the odor conversion oil agent, and the unpleasant odor of feces and urine is converted into a different odor upon contact with the lubricating oil, thereby easily reducing the risk due to the odor.
The odor conversion method of the present invention may include at least one of a step of depressurizing a feces-urine tank of the sanitary vehicle by a vacuum pump to suck excrement from a hose connected to the feces-urine tank and a step of pressurizing the feces-urine tank by the vacuum pump to discharge excrement from the hose connected to the feces-urine tank. In the odor conversion method of the present invention, since air in the human waste tank is discharged to the outside in order to reduce the pressure in the human waste tank by the vacuum pump, when the human waste tank of the sanitary vehicle is reduced in pressure by the vacuum pump and excrement is sucked by the hose connected to the human waste tank, the effect of reducing the harmful effect due to the offensive odor of the excrement is particularly remarkable.
(lubricating oil)
In the odor conversion method of the present invention, the lubricating oil for use in the vacuum pump contains an odor conversion oil agent. The components other than the odor converting oil agent in the lubricating oil are not particularly limited, and conventionally known components of lubricating oil used in a vacuum pump, such as mineral oil, can be used. The odor conversion oil described later may be mixed with a commercially available lubricating oil generally used for vacuum pumps.
The content of the odor conversion oil agent in the lubricating oil is not particularly limited, but is preferably 0.01 to 99 vol%, more preferably 0.1 to 50 vol%, further preferably 0.1 to 10 vol%, and particularly preferably 0.5 to 1.5 vol%. By setting the content of the odor converting oil agent in the lubricating oil to the above range, the occurrence of a failure in the vacuum pump is suppressed without impairing the function as the lubricating oil, and the odor of the odor converting oil agent is not excessively intensified, and the lubricating oil can exhibit a sufficient odor converting effect and is excellent in liquid stability.
When the lubricating oil containing the odor conversion oil is charged into a vacuum pump, the odor conversion oil and the lubricating oil may be stirred and mixed to prepare a lubricating oil containing the odor conversion oil, and then the lubricating oil may be charged into a vacuum pump and used. Alternatively, the odor conversion oil and the lubricating oil may be mixed in the vacuum pump by filling the vacuum pump with the odor conversion oil and the lubricating oil separately and then operating the vacuum pump, and the mixture may be used as the lubricating oil containing the odor conversion oil.
(oil for odor conversion)
The odor conversion oil agent includes an odor conversion oil agent containing an odor conversion component and an oil agent component. The odor converting oil agent will be described below by way of example.
(odor converting component)
The odor converting component preferably contains at least one oxygen-containing heterocyclic compound selected from furan compounds and pyran compounds.
(Furan Compound)
The furan compound is an oxygen-containing heterocyclic compound, and is not particularly limited as long as it has a furan skeleton having a 5-membered ring formed of 4 carbon atoms and 1 oxygen atom. Examples of the furan compound include: dimethylhydroxyfuranone, furfural, 5-methylfurfural, furfuryl mercaptan, furfuryl alcohol, 2-propionylfuran, 2-ethylfuran, menthofuran, 2-methyl-3-furanthiol, 2-methyl-3-tetrahydrofuranethiol, 2-methyl-4, 5-dihydro-3-furanthiol, 2-methylfuran, 2-methyltetrahydrofuran, 2-hexanoylfuran, 2-pentylfuran, 2-propylfuran, 2- (3-phenylpropyl) tetrahydrofuran, 2, 3-dihydrobenzofuran, 2, 4-dimethyl-4-phenyltetrahydrofuran, 2-furfuryl-5-methylfuran, 2-heptylfuran, 2-methylbenzofuran, 2-methyl-5-propionylfuran, 2- (5-vinyl-5-methyltetrahydrofuran-2-yl) -propionaldehyde, 3- { [ 2-methyl- (2 or 4), 5-dihydro-3-furanyl ] thio } -2-methyltetrahydrofuran-3-thiol, 2-methyltetrahydrofuran-3-thiol, 2-vinyl-5-isopropenyl-2-methyltetrahydrofuran, 5-methyl-2-furanmethanethiol, 6-methyl-2, 3-dihydrothieno [2, 3-c ] furan, 2, 5-dimethoxytetrahydrofuran, 3-acetyl-2, 5-dimethylfuran, 2-acetyl-5-methylfuran, 2-acetylfuran, 2-butylfuran, 2, 5-diethyltetrahydrofuran, difurfuryl disulfide, difurfuryl ether, difurfuryl sulfide, and 2, 5-dimethyl-3-furanthiol, and the like. Among these compounds, dimethylhydroxyfuranone, 5-methylfurfural and furfuryl mercaptan are preferable.
The amount of the furan compound is preferably 0.1 to 10% by mass, more preferably 0.4 to 10% by mass, even more preferably 0.4 to 3% by mass, particularly preferably 0.4 to 1.5% by mass, and most preferably 0.5 to 1.2% by mass, based on 100% by mass of the odor. By setting the content of the furan compound to the above range, unpleasant malodors of excrement can be more sufficiently converted into different odors, and unpleasant feelings due to the malodors of excrement can be more sufficiently reduced by the odor conversion method of the present invention.
The furan compound may be used alone or in combination of two or more.
(pyran compound)
The pyran compound is an oxygen-containing heterocyclic compound, and is not particularly limited as long as it has a pyran skeleton having as a skeleton a 6-membered ring ether compound formed of 5 carbon atoms and 1 oxygen atom. Examples of the pyran compound include: maltol, ethyl maltol, 4-acetoxy-3-pentyltetrahydropyran, 3, 5-dihydroxy-6-methyl-2, 3-dihydro-4 (4H) -pyrone, 6-vinyl-2, 2, 6-trimethyltetrahydropyran, 5-methyl-3-butyltetrahydropyran-4-ylacetate, octahydro-2H-1-benzopyran-2-one, 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran, theaspirane, graprospirane, (2S,4aR,8aS) -2, 5,5,8 a-tetramethyl-3, 4,4a,5,6,8 a-hexahydro-2H-1-benzopyran, 6-vinyl-2, 2, 6-trimethyltetrahydro-3 (4H) -pyrone, 6-hydroxydihydrotheaspirane, 6-acetoxydihydrotheaspirane, and 2, 6-diethyl-5-isopropyl-2-methyltetrahydro-2H-pyran. Among these compounds, maltol and ethyl maltol are preferable.
The amount of the pyran compound is preferably 1 to 10% by mass, more preferably 1 to 8% by mass, even more preferably 1 to 5% by mass, and particularly preferably 2 to 5% by mass, based on 100% by mass of the odor. By setting the content of the pyran compound to the above range, unpleasant malodors of excrement can be more sufficiently converted into different malodors, and the unpleasant feeling due to the malodors of excrement can be more sufficiently reduced by the odor conversion method of the present invention.
The pyran compounds may be used singly or in combination of two or more.
The odor is converted to 100% by mass, and the total content of the oxygen-containing heterocyclic compound in the odor converting agent component, that is, the furan compound and the pyran compound, is preferably 1 to 20% by mass, more preferably 1 to 10% by mass, even more preferably 1 to 5% by mass, and particularly preferably 2 to 5% by mass. By setting the content of the oxygen-containing heterocyclic compound in the above range, unpleasant malodors of excrement can be more sufficiently converted into different malodors, and the unpleasant feeling due to the malodors of excrement can be more sufficiently reduced by the odor conversion method of the present invention.
The ratio of the furan compound to the pyran compound in the odor conversion component is preferably 1: 2 to 1: 5, and more preferably 1: 3 to 1: 4, in terms of a mass ratio. By setting the ratio of the furan compound to the pyran compound to the above range, unpleasant odor of excrement can be more sufficiently converted into different odors, and the unpleasant feeling due to the odor of excrement can be more sufficiently reduced by the odor conversion method of the present invention.
(Vanillin-series compound)
The odor conversion component preferably further comprises a vanillin-based compound. By containing the vanillin-based compound as the odor conversion component, unpleasant odor of excrement can be converted into different odors more sufficiently, and the unpleasant feeling due to the odor of excrement can be reduced more sufficiently by the odor conversion method of the present invention.
The vanillin-based compound is not particularly limited as long as it has a vanillin skeleton. Examples of the vanillin-based compound include: vanillin, ethyl vanillin, acetaldehyde ethyl vanillin acetal, vanillin acetate, ethyl vanillin isobutyrate, vanilla ethanone, ethyl vanillyl oxalate, ethyl vanillin propylene glycol acetal, methyl vanillyl oxalate, vanillic acid, vanillin isobutyrate, butyl vanillyl oxalate, vanillin 2, 3-butanediol acetal, vanillin lactate, and the like. Of these compounds, vanillin is preferred.
The content of the vanillin-based compound is preferably 5 to 25% by mass, more preferably 5 to 20% by mass, even more preferably 10 to 20% by mass, and particularly preferably 10 to 15% by mass, based on 100% by mass of the odor. By setting the content of the vanillin-based compound to the above range, unpleasant odor of excrement can be more sufficiently converted into different odors, and unpleasant feeling due to the odor of excrement can be more sufficiently reduced by the odor conversion method of the present invention.
The above vanillin compounds can be used singly or in combination.
(pyridines)
The odor conversion component preferably further contains pyridine. The odor conversion component contains pyridine, so that unpleasant odor of excrement can be converted into different odors more sufficiently, and the unpleasant feeling caused by the odor of excrement can be reduced more sufficiently by the odor conversion method of the present invention.
The pyridine is a nitrogen-containing heterocyclic aromatic compound, and is not particularly limited as long as it contains a pyridine skeleton having a 6-membered ring structure composed of 5 carbon atoms and 1 nitrogen atom as a skeleton. Examples of the pyridines include: 2-acetylpyridine, 3-acetylpyridine, 4-acetylpyridine, 2-acetyl-1, 4,5, 6-tetrahydropyridine, 2-acetyl-4-isopropenylpyridine, 4-acetyl-2-isopropenylpyridine, 2-acetyl-4-isopropylpyridine, 3, 5-dimethyl-4, 5,6, 7-tetrahydrothieno [3, 2-c ] pyridine, 2-acetyl-3, 4,5, 6-tetrahydropyridine and the like. Of these compounds, 2-acetylpyridine is preferred.
The odor is converted to 100% by mass, and the content of the pyridine is preferably 0.01 to 0.3% by mass, more preferably 0.05 to 0.2% by mass, and still more preferably 0.09 to 0.11% by mass. By setting the pyridine content to the above range, the odor conversion oil agent can more easily convert the odor generated in the living environment in daily life or in the industry into a different odor, and can sufficiently reduce the unpleasant feeling due to the odor.
The pyridine may be used alone or in combination of two or more.
(pyrazines)
The odor conversion component preferably further contains pyrazines. By containing pyrazines as the odor conversion component, for example, unpleasant malodors of excrement can be converted into different odors more sufficiently, and the unpleasant feeling due to the malodors of excrement can be reduced more sufficiently by the odor conversion method of the present invention.
The pyrazine is a nitrogen-containing heterocyclic aromatic compound, and is not particularly limited as long as it has a pyrazine skeleton having a 6-membered ring structure formed of 4 carbon atoms and 2 nitrogen atoms. Examples of pyrazines include: 2-methylthio-3-methylpyrazine, 2-methoxy-3-methylpyrazine, 2-ethyl-3 (5/6) dimethylpyrazine, 2-ethyl-3-methylpyrazine, 2-methoxy-5-methylpyrazine, 2-acetyl-3 (5/6) -dimethylpyrazine, 2-acetyl-3-ethylpyrazine, 2-acetyl-3-methylpyrazine, acetylpyrazine, 2- (furfurylthio) - (3/5/6) -methylpyrazine, 2-methyl- (5/6) - (methylthio) pyrazine, 2-ethyl-3- (methylthio) pyrazine, 2-isopropyl-3- (methylthio) pyrazine, 2-sec-butyl-3-methoxypyrazine, 2-ethoxy- (3/5/6) -methylpyrazine, 2-ethoxy-3-ethylpyrazine, 2-ethoxy-3-isopropylpyrazine, 2-ethyl-3-methoxypyrazine, 2-hexyl-3-methoxypyrazine, 2-isobutyl-3-methoxypyrazine, 2-isopropoxy-3-methylpyrazine, 2-isopropyl- (3/5/6) -methoxypyrazine, 2-methoxy- (5/6) -methylpyrazine, 2-methoxy-3, 5-dimethylpyrazine, 2-isopropyl-3-methoxypyrazine, 2-methyl-6-propoxypyrazine, 2-ethoxy- (5/6) -methylpyrazine, 2- (hydroxymethyl) -5-methylpyrazine, and the like. Among these compounds, 2-methylthio-3-methylpyrazine, 2-methoxy-3-methylpyrazine, 2-ethyl-3 (5/6) dimethylpyrazine, and 2-ethyl-3-methylpyrazine are preferable.
The odor is converted to 100% by mass, and the content of pyrazines is preferably 0.01 to 0.5% by mass, more preferably 0.05 to 0.5% by mass, even more preferably 0.05 to 0.3% by mass, and particularly preferably 0.1 to 0.3% by mass. By setting the content of pyrazines in the above range, unpleasant malodors of excrement can be more sufficiently converted into different malodors, and the unpleasant feeling due to the malodors of excrement can be more sufficiently reduced by the odor conversion method of the present invention.
The above pyrazines may be used singly or in combination of two or more.
The odor converting component may contain other additives as long as the effect of the present invention is not hindered. Examples of other additives include: terpene alcohol-based compounds, ester-based compounds, aldehyde-based compounds, ketone-based compounds, and the like, other than the furan compounds, pyran compounds, vanillin-based compounds, pyridines, and pyrazines described above.
The odor conversion component is divided into 100 mass%, and the total content of the other additives in the odor conversion component is preferably 30 mass% or less, more preferably 20 mass% or less, still more preferably 10 mass% or less, and particularly preferably 5 mass% or less. By setting the total content of the other additives to the above range, the odor conversion oil agent can more easily convert the odor generated in the living environment or industry in daily life into a different odor, and sufficiently reduce the unpleasant feeling due to the odor.
(solvent)
Among the odor converting components, the above-mentioned components are preferably dispersed in a solvent. By dispersing each component in the solvent, each component can be uniformly dispersed in the odor conversion oil agent, the odor conversion oil agent has excellent liquid stability, and the odor conversion effect can be more effectively exhibited.
As the solvent, water or a solvent can be used, and a solvent is preferable in view of excellent compatibility with the oil component. The solvent is not particularly limited, and examples thereof include alcohols, ethers, ketones, and esters. Among them, alcohols and esters are preferable from the viewpoint of particularly excellent compatibility with the oil component.
The alcohol is not particularly limited, and examples thereof include a monohydric alcohol, and polyhydric alcohols such as dihydric alcohol and trihydric alcohol. As the alcohol, an alcohol having 2 to 4 carbon atoms can be preferably used. The number of carbon atoms of the alcohol is more preferably 2 to 3.
Specific examples of the alcohol include ethanol, propylene glycol, glycerin, and 2-2 (ethoxyethoxy) ethanol, and when an odor converting oil agent is used, ethanol, 2-2 (ethoxyethoxy) ethanol, and propylene glycol are preferable from the viewpoint of low toxicity.
The ester is not particularly limited, and esters among specified additives specified by the minister of health and welfare ministerial can be preferably used in article 10 of the food sanitation act. Specifically, in "specified additives" included in the food hygiene law enforcement rules accompanying table 1, compounds classified into esters can be preferably used. Among these compounds, benzyl benzoate, triethyl citrate, and isopropyl myristate are more preferable because they have a relatively weak odor and do not interfere with the flavor of other components.
The above solvents may be used alone or in combination of two or more.
The odor is converted to 100% by mass, and the content of the solvent is preferably 20 to 90% by mass, more preferably 30 to 90% by mass, even more preferably 40 to 85% by mass, and particularly preferably 50 to 85% by mass. By setting the solvent content to the above range, the respective components can be uniformly dispersed in the odor conversion oil agent, the odor conversion oil agent has excellent liquid stability, and the odor conversion effect can be more effectively exhibited.
(oil component)
The oil component is not particularly limited as long as it is an oil containing a component different from the component used in the odor conversion component. As the oil component, an oil component having excellent compatibility with the odor conversion component and excellent compatibility with a lubricating oil for a vacuum pump is preferably used. Examples of such oil components include oil components containing nonionic surfactants.
The nonionic surfactant is not particularly limited, and for example, a fatty acid ester nonionic surfactant or the like can be used. Examples of the fatty acid ester-based nonionic surfactant include: and glycerin fatty acid ester-based nonionic surfactants, sorbitan fatty acid ester-based nonionic surfactants, polyoxyethylene sorbitan fatty acid ester-based nonionic surfactants, and polyoxyethylene sorbitan fatty acid ester-based nonionic surfactants, among which glycerin fatty acid ester-based nonionic surfactants, sorbitan fatty acid ester-based nonionic surfactants, and polyoxyethylene sorbitan fatty acid ester-based nonionic surfactants are preferable in terms of more excellent compatibility with lubricating oils used in machinery.
More specifically, the nonionic surfactant may be preferably used in that it is more compatible with lubricating oil used for a vacuum pump, such as glycerol monooleate, sorbitan monolaurate, sorbitan monooleate, sorbitan trioleate, sorbitan sesquioleate, polyoxyethylene sorbitan monooleate, and polyoxyethylene sorbitan trioleate.
The oil component may be used alone or in combination of two or more.
The HLB of the oil component is preferably 11.0 or less, more preferably 10.0 or less, further preferably 9.0 or less, and particularly preferably 5.0 or less. The HLB of the oil component is preferably 2.5 or more. By setting the HLB of the oil component to the above range, the compatibility in the lubricating oil for a vacuum pump is further improved.
The HLB (Hydrophilie-Lipophile Balance) is a hydrophilic-lipophilic Balance value. In the present specification, the HLB is a value calculated by the griffin method based on the following formula. When two or more oil components are mixed and used, the average value of the HLB values is obtained.
[ HLB ] ═ 20X (proportion (mass%) of hydrophilic group in oil component.)
The odor is converted into 100 parts by mass, and the content of the oil component in the odor conversion oil is preferably 10 to 400 parts by mass, and more preferably 50 to 150 parts by mass. By setting the content of the oil component in the above range, the odor conversion oil can exhibit more excellent odor conversion properties, and the compatibility in the lubricating oil for a vacuum pump is further improved.
The oil component may contain other oils in addition to the nonionic surfactant as long as the effects of the present invention are not impaired.
The odor converting oil agent may contain other additives in addition to the odor converting component and the oil agent component as long as the effects of the present invention are not hindered.
Examples
The present invention will be specifically described below with reference to examples and comparative examples. However, the present invention is not limited to the examples.
Example 1
(preparation of odor converting component)
The raw materials of the odor conversion components shown in table 1 were charged into a mixing tank, mixed, and stirred to prepare odor conversion components. Specifically, a solvent was charged into a mixing tank equipped with a heating device according to the mixing method shown in table 1, and then other raw materials were sequentially added thereto, followed by stirring at 20 ℃ for 30 minutes to prepare an odor conversion component.
(preparation of oil for odor conversion)
Sorbitan monooleate (HLB of 4.3) was prepared as an oil component, and the odor conversion component prepared as described above and sorbitan monooleate were mixed at room temperature in a mixing tank so that the mass ratio was 1: 1, to prepare an odor conversion oil.
(preparation of lubricating oil)
The odor converting oil agent 50cc and the lubricating oil 4950cc prepared as described above were charged in a vacuum pump of a sanitary vehicle (vacuum vehicle), respectively. By operating the vacuum pump, the odor converting oil agent and the lubricating oil were mixed to prepare 5L of the lubricating oil containing 1 vol% of the odor converting oil agent. The following odor conversion test was performed using this lubricating oil, and evaluation was performed.
(odor transition test)
The extraction was performed at the extraction site using a sanitary vehicle equipped with a vacuum pump filled with the lubricating oil containing the odor conversion oil agent obtained as described above, and the odor was evaluated by the operator according to the following evaluation criteria. Among them, in the following evaluation, if 3 or more, it can be evaluated that the odor conversion effect is obtained.
5: the odor of the feces and urine was not sensed at all, and the odor was very good
4: almost no smell of feces and urine was sensed, and a good smell was felt
3: the smell of feces and urine was slightly felt, but not unpleasant
2: the smell of feces and urine was felt, and good smell was not felt
1: the odor of feces and urine is strongly felt, and the odor is considered to be unpleasant
The above evaluation was performed 2 times. The first results are shown in table 2, and the second results are shown in table 3.
[ Table 1]
[ Table 2]
[ Table 3]
Claims (15)
1. A method of odor conversion, comprising:
a step of depressurizing a feces-urine tank of a sanitary vehicle by a vacuum pump and sucking excrement from a hose connected to the feces-urine tank; and/or a step of pressurizing the feces-urine tank by a vacuum pump and discharging excrement from a hose connected to the feces-urine tank,
the lubricating oil for the vacuum pump contains an odor conversion oil agent,
the odor conversion oil agent contains an odor conversion component and an oil agent component,
the odor conversion component contains at least one oxygen-containing heterocyclic compound selected from furan compounds and pyran compounds.
2. The odor conversion method as set forth in claim 1, wherein:
the odor is converted into 100% by mass, and the content of the oxygen-containing heterocyclic compound is 1-20% by mass.
3. The odor conversion method according to claim 1 or 2, characterized by:
the furan compound is selected from the group consisting of dimethylhydroxyfuranone, furfural, 5-methylfurfural, furfuryl mercaptan, furfuryl alcohol, 2-propionylfuran, 2-ethylfuran, menthofuran, 2-methyl-3-furanthiol, 2-methyl-3-tetrahydrofuranthiol, 2-methyl-4, 5-dihydro-3-furanthiol, 2-methylfuran, 2-methyltetrahydrofuran, 2-hexanoylfuran, 2-pentylfuran, 2-propylfuran, 2- (3-phenylpropyl) tetrahydrofuran, 2, 3-dihydrobenzofuran, 2, 4-dimethyl-4-phenyltetrahydrofuran, 2-furfuryl-5-methylfuran, 2-heptylfuran, 2-methylbenzofuran, 2-methyl-5-propionylfuran, 2- (5-vinyl-5-methyltetrahydrofuran-2-yl) -propionaldehyde, 3- { [ 2-methyl- (2 or 4), 5-dihydro-3-furanyl ] thio } -2-methyltetrahydrofuran-3-thiol, 2-vinyl-5-isopropenyl-2-methyltetrahydrofuran, 5-methyl-2-furanmethanethiol, 6-methyl-2, 3-dihydrothieno [2, 3-c ] furan, 2, 5-dimethoxytetrahydrofuran, 3-acetyl-2, 5-dimethylfuran, 2-acetyl-5-methylfuran, 2-acetylfuran, 2-butylfuran, 2, 5-diethyltetrahydrofuran, difurfuryl disulfide, difurfuryl ether, difurfuryl sulfide, and 2, 5-dimethyl-3-furanthiol.
4. The odor conversion method according to claim 1 or 2, characterized by:
the odor is converted into a furan compound with a content of 0.1-10% by mass, wherein the content is 100% by mass.
5. The odor conversion method according to claim 1 or 2, characterized by:
the pyran compound is selected from maltol, ethyl maltol, 4-acetoxy-3-pentyltetrahydropyran, 3, 5-dihydroxy-6-methyl-2, 3-dihydro-4 (4H) -pyrone, 6-vinyl-2, 2, 6-trimethyltetrahydropyran, 5-methyl-3-butyltetrahydropyran-4-ylacetate, octahydro-2H-1-benzopyran-2-one, 4-methyl-2- (2-methyl-1-propenyl) tetrahydropyran, theaspirane, grapospirane, (2S,4aR,8aS) -2, 5,5,8 a-tetramethyl-3, 4,4a,5,6,8 a-hexahydro-2H-1-benzopyran, 6-vinyl-2, 2, 6-trimethyltetrahydro-3 (4H) -pyrone, 6-hydroxydihydrotheaspirane, 6-acetoxydihydrospirane and 2, at least 1 of 6-diethyl-5-isopropyl-2-methyltetrahydro-2H-pyran.
6. The odor conversion method according to claim 1 or 2, characterized by:
the odor is converted into 100% by mass, and the content of the pyran compound is 1-10% by mass.
7. The odor conversion method according to claim 1 or 2, characterized by:
the odor conversion component further comprises a vanillin compound.
8. The odor conversion method as set forth in claim 7, wherein:
the vanillin compound is at least one selected from vanillin, ethyl vanillin, acetaldehyde ethyl vanillin acetal, vanillin acetate, ethyl vanillin isobutyrate, vanilla acetone, ethyl vanillin oxalate, ethyl vanillin propylene glycol acetal, methyl vanillin oxalate, vanillic acid, vanillin isobutyrate, butyl vanillin oxalate, vanillin 2, 3-butanediol acetal and vanillin lactate.
9. The odor conversion method as set forth in claim 7, wherein:
the amount of the vanillin-based compound is 5 to 25% by mass based on 100% by mass of the odor.
10. The odor conversion method according to claim 1 or 2, characterized by:
the oil component contains a nonionic surfactant.
11. The odor conversion method according to claim 1 or 2, characterized by:
the oil component contains at least one fatty acid ester nonionic surfactant selected from the group consisting of a glycerin fatty acid ester nonionic surfactant, a sorbitan fatty acid ester nonionic surfactant, a polyoxyethylene sorbitan fatty acid ester nonionic surfactant, and a polyoxysorbitol fatty acid ester nonionic surfactant.
12. The odor conversion method according to claim 1 or 2, characterized by:
the oil component contains at least one selected from glycerol monooleate, sorbitan monolaurate, sorbitan monooleate, sorbitan trioleate, sorbitan sesquioleate, polyoxyethylene sorbitan monooleate and polyoxyethylene sorbitan trioleate.
13. The odor conversion method according to claim 1 or 2, characterized by:
the HLB of the oil component is 11.0 or less.
14. The odor conversion method according to claim 1 or 2, characterized by:
the odor is converted into 100 parts by mass, and the content of the oil agent component is 10-400 parts by mass.
15. The odor conversion method according to claim 1 or 2, characterized by:
the content of the odor conversion oil agent in the lubricating oil is 0.01-99 vol%.
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| JP2016150153A JP6853524B2 (en) | 2016-07-29 | 2016-07-29 | Odor modulation method |
| PCT/JP2017/027478 WO2018021541A1 (en) | 2016-07-29 | 2017-07-28 | Odor modulation method |
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| JP7158192B2 (en) * | 2018-07-17 | 2022-10-21 | 花王株式会社 | Methyl mercaptan odor inhibitor |
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| JPS59185813A (en) * | 1983-04-08 | 1984-10-22 | Honda Motor Co Ltd | Lubricating oil for two-cycle engine |
| JPH042229Y2 (en) * | 1987-07-15 | 1992-01-24 | ||
| JPH0623456B2 (en) * | 1989-05-18 | 1994-03-30 | 中野 富雄 | Lubricating oil feeder for vacuum pump for vacuum car |
| JPH07220531A (en) * | 1994-02-07 | 1995-08-18 | Hitachi Cable Ltd | Self-lubricating, self-welding enameled wire |
| BR9814311A (en) * | 1997-12-17 | 2000-10-10 | Hercules Inc | "hydrophobically modified polysaccharides in household preparations" |
| CN100376292C (en) * | 2002-10-28 | 2008-03-26 | 高砂香料工业株式会社 | Deodorant composition |
| US20110117156A1 (en) * | 2004-05-27 | 2011-05-19 | Arizona Chemical Company | Compositions and articles containing an active liquid in a polymeric matrix and methods of making and using the same |
| EP1884555A2 (en) * | 2006-08-01 | 2008-02-06 | Symrise GmbH & Co. KG | Masking mineral oil smell and scenting of mineral oils |
| CN201036628Y (en) * | 2007-05-30 | 2008-03-19 | 北京三辰环卫机械有限公司 | Deodorizing device for vacuum dung-suction vehicle |
| US8022024B2 (en) * | 2007-06-28 | 2011-09-20 | Chevron U.S.A. Inc. | Functional fluid compositions |
| JP5379361B2 (en) * | 2007-08-08 | 2013-12-25 | 出光興産株式会社 | Antiwear agent, additive composition for lubricant and lubricating oil composition |
| CN101445763A (en) * | 2007-11-26 | 2009-06-03 | 赵登利 | Method for producing diesel oil from waste engine oil |
| CN201143312Y (en) * | 2007-12-26 | 2008-11-05 | 北京市清洁机械厂 | Deodorization device of vacuum dung sucking cart |
| EP2133102B1 (en) * | 2008-03-19 | 2014-12-03 | Symrise AG | Odor reducers |
| US8257975B2 (en) * | 2008-03-25 | 2012-09-04 | The Lubrizol Corporation | Marker dyes for petroleum products |
| KR101808867B1 (en) * | 2009-06-22 | 2018-01-18 | 세게티스, 인코포레이티드. | Ketal compounds and uses thereof |
| CN101869523B (en) * | 2010-06-08 | 2012-06-27 | 浙江耐特科技有限公司 | Nursing device for paralyzed patients |
| JP5692844B2 (en) * | 2010-09-24 | 2015-04-01 | 高砂香料工業株式会社 | Deodorant composition for sulfides |
| CN104955928B (en) * | 2012-12-07 | 2018-02-09 | 路博润公司 | Pyrans dispersant |
| EP2962678A1 (en) * | 2014-06-30 | 2016-01-06 | Symrise AG | Flavour and fragrance compositions comprising acetophenone derivatives |
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