CN109054913B - Methanol diesel oil additive based on yeast grease and methanol diesel oil prepared by same - Google Patents
Methanol diesel oil additive based on yeast grease and methanol diesel oil prepared by same Download PDFInfo
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- CN109054913B CN109054913B CN201811038146.XA CN201811038146A CN109054913B CN 109054913 B CN109054913 B CN 109054913B CN 201811038146 A CN201811038146 A CN 201811038146A CN 109054913 B CN109054913 B CN 109054913B
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Abstract
The invention relates to a methanol diesel oil additive based on yeast grease and methanol diesel oil prepared by the methanol diesel oil additive. The yeast grease is obtained by microbial fermentation of waste oil, starch factory wastewater and waste molasses as culture media of substrates; preparing a methanol diesel oil additive by using the yeast grease as a main material, wherein the additive contains a layering-prevention solubilizing component, an anticorrosion swelling-prevention component, a carbon deposition-removing clear colloid component, a flash point-improving and pour point-reducing component and a power-improving and combustion-promoting component in percentage by volume unit, and the functional components are uniformly stirred at normal temperature to obtain the methanol diesel oil additive; 10-30% of anhydrous methanol or multi-carbon alcohol, 70-90% of diesel oil and 0.1-0.5% of the above-mentioned additive are used to prepare the methanol diesel oil with high cetane number, strong dynamic property, high flash point and low solidifying point. The invention solves the problem of discharge pollution of waste oil, starch factory waste water and waste molasses, and also solves the problems of shortage of domestic product oil, excessive methanol yield, ineffective utilization and the like.
Description
Technical Field
The invention relates to the field of alcohol alternative fuels, in particular to a methanol diesel oil additive based on yeast grease and methanol diesel oil prepared by the methanol diesel oil additive.
Background
Alcohol fuel is regarded as the most promising vehicle fuel in the field of alternative fuels as a clean, cheap and efficient alternative to petrochemical fuel, and the low cost and abundant sources of the alcohol fuel are increasingly emphasized. Long-term research shows that the methanol economy is used as a substitute fuel, so that people can no longer depend on increasingly reduced petroleum and natural gas resources, and the situation is particularly in line with the increasingly short supply of petrochemical resources in China. The oxygen content of the methanol accounts for 50 percent, the ignition limit of the methanol is wider than that of diesel oil, the combustion speed is high, and the emission of particulate matters is favorably reduced; the boiling point of the methanol is lower than that of the diesel oil, and the mixed gas is formed quickly and uniformly, so that complete combustion is facilitated; the theoretical air-fuel ratio of the methanol is lower than that of diesel oil, the combustion in an engine is more complete, and the emission of greenhouse effect gases can be effectively reduced; however, methanol as an alternative fuel for diesel engines has the following disadvantages: (1) because the methanol contains hydroxyl and is a polar substance, the methanol and the diesel oil are very difficult to mix, and the phenomenon of layering is very easy to occur, so the storage stability is poor; (2) the flash point of the methanol is only 12 ℃ and is much lower than the flash point of the diesel oil which is 55 ℃, that is to say, after the methanol is mixed in the diesel oil, the flash point of the mixed fuel can be rapidly reduced to be close to the flash point (12 ℃) of the methanol, so that the mixed fuel becomes extremely unstable and can explode when meeting open fire, and serious transportation and storage risks exist; (3) the latent heat of vaporization of the methanol is large, and the cooling effect generated by the high latent heat of vaporization can generate adverse effect on the working conditions of the engine at low speed and low load; (4) the methanol has low viscosity and poor lubricity, and when an original fuel injection system of a diesel engine is directly used, faults such as system abrasion and even blockage can be caused, so that the reliability and the durability of the engine are influenced; (5) the ignition point of the methanol is much higher than that of the diesel oil (more than 200 ℃), so that the methanol is difficult to ignite and has poor spontaneous ignition capability; (6) the saturated vapor pressure of the methanol is higher than that of the diesel oil, so the phenomenon of high-temperature air resistance is easy to occur; (7) the calorific value of methanol is only 43.6% of that of diesel oil, so the introduction of methanol inevitably reduces the calorific value of fuel, thereby remarkably reducing the power and torque of the engine; (8) methanol has a lower cetane number than diesel fuel and a higher latent heat of vaporization than diesel fuel, which directly reduces the thermal efficiency and economy of co-combustion of methanol at low engine loads. Therefore, the problems of poor mutual solubility, high gas resistance, low flash point, low heat value, serious corrosion, poor economy and the like of the methanol are key factors for restricting the development of the methanol diesel.
In order to solve the above problems of the methanol fuel, many new patent technologies have been developed in recent years. The patent No. CN102161922A discloses a methanol diesel oil additive and methanol diesel oil, which use acetone and toluene with toxicity and very low flash point, and the dosage of the additive>10%, the dosage is very large, and the cost is very high; the patent number is CN102229820A, which discloses a 'denatured methanol diesel oil and a blending process thereof', which uses polymethoxy methyl acetal, namely a polymer of methylal, and belongs to a substance prohibited from being added into diesel oil by Ming dynasty; the patent number is CN1948443A, which discloses a 'fuel replacing diesel oil and a preparation method and application thereof', wherein the antifreeze agent preferably selects sodium hydroxide, the sodium hydroxide is inorganic strong base and has very strong corrosivity to metal, and simultaneously is strong acid, strong alkali salt and very good conductivity, thereby greatly increasing the conductivity of oil products and accelerating the electrochemical corrosion of an oil circuit system; the patent number is CN101955814A, which discloses a dimethyl ether methanol diesel oil mixed fuel and a preparation method thereof, wherein dimethyl ether with high cost, low flash point, easy inhalation and poisoning, complex preparation process and dangerous normal temperature storage is used as a main raw material for improving power; patent No. CN101709234A discloses a methanol diesel oil compound additive and a preparation method thereof, but the patent does not mention the flash point temperature of the embodiment in the content, and the problem of low flash point of methanol diesel oil is not solved at all; the patent No. CN103911191A discloses an additive for diesel oil and a preparation method thereof, wherein in the described embodiment, the dosage of the additive is up to 17%, but the freezing point and the cold filter plugging point are more conventional 0#Compared with diesel oil, the diesel oil is not reduced but slightly improved, so that the cost is high and the effect is slight; patent number CN107099345A, disclose a "biological alcohol group fuel oil aid solutizer", the patent number is CN106947555A, disclose a "biological alcohol group fuel oil power heat value agent", the patent number is CN106906014A, disclose a "biological alcohol group light fuel flash point improver", the patent number is CN107338114A, disclose a "biological alcohol group light fuel pour point depressing rheological agent", the above-mentioned four patents are thorough to various problems analysis of alcohol group fuel, the principle is explained in detail, the solution is clear, but it is complicated to make the process with the yeast fatty acid, and can't utilize precious resources such as various factory waste water, waste oil, waste sugar solution, etc. to change waste into wealth effectively, therefore there are high technological costs, the defect of low utilization factor of industrial waste; the patent No. CN107739632A discloses a method for preparing a methanol gasoline additive by using a microorganism fermentation waste oil product as a main body and an application thereof, wherein the components of n-pentane, cyclohexane, methyl formate, ethyl acetate, dimethyl carbonate and the like in the embodiment belong to low-flash-point components, and the patent cannot refer to the special requirement (not lower than 55 ℃) for flash point of diesel oil, and the flash point of the finished oil follows the 'flash point minimum principle'. Therefore, the research and development of a novel environment-friendly methanol diesel additive which is less in dosage, low in cost, good in effect, biodegradable, free of harmful components and electrolytes and free of secondary pollution to the environment is urgent.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the methanol diesel additive has the effects of preventing layering and dissolving, preventing corrosion and swelling, removing carbon deposition and colloid, improving flash point and condensation point, improving power and promoting combustion and the like, and effectively solves various technical problems in the preparation, storage, popularization and use processes of the methanol diesel; the invention aims to solve another technical problem that: provides the methanol diesel oil with high cetane number, strong dynamic property, high flash point and low condensation point.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a methanol diesel oil additive based on yeast grease is obtained by the following method:
will laboratory for a long timeCulturing an domesticated strain HT-925 dermic trichosporium on an YPD culture medium at constant temperature, wherein the preservation number of the dermic trichosporium is as follows: CGMCC 14875; the cultured cells were eluted with physiological saline to obtain a concentration of 107～108Bacterial suspension per ml; inoculating the bacterial suspension into a seed culture medium consisting of glucose, yeast powder and urea, and carrying out enrichment culture to obtain a seed solution; inoculating the seed liquid into a fermentation culture medium which takes waste oil, starch factory wastewater and waste molasses as main bodies, and performing fermentation culture for 5-7 days at 25-32 ℃ under dissolved oxygen of 20-60% to obtain yeast grease;
the methanol diesel additive based on the yeast grease comprises the following functional components in percentage by volume: 20-30% of anti-layering solubilizing component, 5-10% of anti-corrosion anti-swelling component, 5-10% of carbon deposition removing clear colloid component, 20-30% of flash point improving and pour point reducing component and 30-40% of power improving and combustion promoting component;
the anti-layering solubilizing component comprises the following components in percentage by volume: 10-15% of yeast oil, 1% of isooctyl alcohol or n-octyl alcohol and n-dodecyl alcohol: 2, epoxy fatty acid methyl ester or fatty acid methyl ester and epoxy fatty acid methyl ester 1: 4-9% of the mixture of 1;
the anti-corrosion and anti-swelling component comprises the following components in percentage by volume: 1-2% of yeast oil, 1% of alpha-methylnaphthalene or tributyl phthalate and trioctyl phthalate: 1, 2-4% of cyclohexanone or cyclohexanone and alkyl salicylic acid 1: 2-4% of the mixture of 1;
the carbon deposit removing colloid component consists of the following components in percentage by volume: 1-2% of yeast grease, 1-2% of ethylene glycol or ethylene glycol and polyethylene glycol: 2-4% of a mixture of n-butanol or sec-butanol and hexanediol 1: 2-4% of the mixture of 1;
the flash point increasing and pour point reducing component comprises the following components in percentage by volume unit: 10-15% of yeast oil, 1% of palm oil and cottonseed oil: 1 or butyl caproate with fatty acid glycerides 1: 1, copolymer of maleic ester and fumaric ester or EVA and WHP 1: 4-9% of the mixture of 1;
the power-promoting combustion-promoting component consists of the following components in percentage by volume unit: 5-10% of yeast grease, 1% of cyclohexyl nitrate and isooctyl nitrate: 1 or cyclododecyl nitrate with 3-methyl-3-nitro-2-butyl nitrate 1: 3, 10-15% of a mixture of 2-nitropropane and nitrobutane 2: 1 or di-tert-butyl peroxide with heptane peroxide 1: 3, 15-20% of the mixture.
The methanol diesel containing the methanol diesel additive comprises the following components in percentage by volume: 10-30% of anhydrous methanol and higher alcohols, 70-90% of diesel oil and 0.1-0.5% of methanol diesel oil additive; the anhydrous methanol, the multi-carbon alcohol, the diesel oil and the methanol diesel oil additive component are added into a stirring container and are uniformly stirred at normal temperature, and the methanol diesel oil is obtained.
The technical scheme is designed based on the following principle:
(1) the design direction of the methanol diesel additive is as follows: the effect of preventing layering and mutual dissolution of various components is good; no corrosion and swelling problems exist; the oil solubility is good; the additives do not generate antagonism; the carbon cleaning agent has the performances of dispersing colloid and cleaning carbon deposition; the flash point is obviously improved, the condensation point is reduced, and the power is improved;
(2) the design principle of the methanol diesel additive is as follows: the biodegradable plastic has biodegradability and can not cause secondary pollution to the environment; the density is proper, and the principle of the density is close to that of methanol, so that the methanol is conveniently modified; has certain universality; enough energy value is required to make up the problem of insufficient heat value of the methanol; the film forming property is good, and secondary deposition of carbon deposition of an oil tank and an oil circuit system can be effectively inhibited; the preparation process is simple, the dosage is less, no harmful components and electrolyte are contained, and the cost is low;
(3) the design mechanism of the methanol diesel additive is as follows: by utilizing the special synergistic action between various compounds and yeast grease, an interfacial film with very high flexibility is formed among various molecules, and various components in the oil product are stabilized by intermolecular acting force and the microencapsulation principle; by establishing the micro-emulsification system and applying a micro-explosion theory, the combustion reaction of the mixed fuel is accelerated, so that the tail gas emission is improved, and the environment-friendly effect is achieved; the establishment of the micro-emulsification system also helps to increase the acting force among fuel molecules, improve the boiling point of the fuel, improve the relative density of the fuel and reduce the saturated vapor pressure of the fuel, thereby playing a role in improving the flash point; in addition, the establishment of a micro-emulsification system destroys the molecular structure of wax crystals and increases the dispersity of the wax crystals, thereby obviously reducing the condensation point and the cold filter plugging point and having no rebound problem.
Compared with the prior art, the invention adopting the technical scheme has the beneficial effects that:
(1) the invention selects the substances of the waste oil, the waste water of the starch factory and the waste molasses as the fermentation sources of the yeast grease, changes waste into valuable and utilizes the waste as energy, effectively solves the problem of emission pollution and opens up a new way for developing and utilizing the industrial waste of the grease;
(2) compared with the prior art, the methanol diesel additive has the advantages of small dosage, low cost, good effect, biodegradability, no harmful components and electrolyte and no secondary pollution to the environment.
(3) The methanol diesel additive has transparent and clear appearance and aromatic smell, and is easy to accept by people.
(4) The methanol diesel oil has high cetane number, strong dynamic property, high flash point and low condensation point, and has extremely high popularization value and wide market prospect.
(5) The invention has simple preparation and convenient use, has the effects of preventing layering and dissolving, preventing corrosion and swelling, removing carbon deposition and colloid, improving flash point and condensation point, improving power and promoting combustion and the like, opens up a new way for solving the technical problems encountered in the preparation, storage, popularization and use processes of the methanol diesel oil, and has wide popularization value.
Detailed Description
The present invention will be described in detail with reference to examples, but the present invention is not limited thereto.
The yeast oil used in the following examples was obtained by the following procedure:
(1) strain: the strain is a yeast grease high-yield strain obtained by screening a compound fermentation culture medium of waste oil, starch factory wastewater and waste molasses in a laboratory for a long time, the grease yield is up to 50 percent, and the strain is numbered HT-925, and is preserved in the general microbiological center of China Committee for culture Collection of microorganisms (address: Beijing city Shangyang district Beichen Xilu No.1, No. 3) in 2017, 11 months and 13 days, and the preservation number is as follows: CGMCC NO.14875, classified and named as dermoan spore (Trichosporon dermatis);
(2) activating strains: inoculating dermal spore bacteria to YPD slant culture medium composed of glucose, peptone, yeast powder and agar, and culturing at constant temperature to obtain activated strain;
(3) preparing a bacterial suspension: eluting the activated strain with normal saline to obtain a concentration of 107～108Bacterial suspension per ml;
(4) preparing a seed solution: inoculating the bacterial suspension into a liquid culture medium consisting of glucose, yeast powder and urea according to the volume unit of 3-5%, carrying out shake culture at 25-32 ℃ for 24h, and carrying out enrichment culture to obtain a seed solution;
(5) fermentation culture: inoculating the seed liquid into a fermentation medium which takes waste oil, starch factory wastewater and waste molasses as main bodies according to the volume unit of 10-15%, and performing fermentation culture for 5-7 days at the temperature of 25-32 ℃ with dissolved oxygen of 20-60% to obtain a fermentation liquid;
(6) obtaining yeast grease: after fermentation, collecting fermentation liquor, performing centrifugal precipitation treatment, collecting fermentation liquor residue for secondary use, and performing crushing, purification and other technical processes on the separated and collected thalli and metabolites to obtain the yeast grease.
Example 1:
1. the methanol diesel additive comprises the following functional components in percentage by volume: 20% of anti-layering fluxing component, 9% of anti-corrosion and anti-swelling component, 6% of carbon deposition removing colloidal component, 30% of flash point improving and pour point reducing component and 35% of power improving and combustion promoting component; all the components are added into a container and stirred uniformly at normal temperature to obtain a transparent and clear methanol diesel additive finished product.
Wherein, the anti-layering solubilizing component comprises 11% of yeast grease, 1% of n-octanol and n-dodecanol: 2, 4% of a mixture, 5% of epoxidized fatty acid methyl ester; the anticorrosive and anti-swelling component comprises 2% of yeast grease, 4% of alpha-methylnaphthalene, 1% of cyclohexanone and alkyl salicylic acid: 3% of the mixture of 1; the carbon deposition removing clear colloid component comprises 1% of yeast grease, 1% of ethylene glycol and polyethylene glycol: 2, 3% of mixture and 2% of n-butyl alcohol; the flash point and pour point improving component comprises 13% of yeast grease, palm oil and cottonseed oil, 1: 1, 8% of a mixture of maleic and fumaric acid esters, 9% of a copolymer of maleic and fumaric acid esters; the power-enhancing combustion-promoting component comprises 5% of yeast grease, 1% of cyclohexyl nitrate and isooctyl nitrate: 1, mixture of 2-nitropropane and nitrobutane 2: 1, 17% of the mixture.
2. The methanol diesel consists of the following components in percentage by volume: 4 percent of anhydrous methanol, 16 percent of polyhydric alcohol, 80 percent of diesel oil and 0.2 percent of methanol diesel oil additive, and all the components are added into a stirring container and stirred uniformly at normal temperature to obtain the methanol diesel oil finished product oil.
Example 2:
1. the methanol diesel additive comprises the following functional components in percentage by volume: 25% of anti-layering solubilizing component, 6% of anti-corrosion anti-swelling component, 9% of carbon deposition removing clear colloid component, 28% of flash point improving and pour point reducing component and 32% of power promoting and combustion promoting component, wherein all the components are added into a container and stirred uniformly at normal temperature to obtain a transparent and clear methanol diesel additive finished product.
Wherein, the anti-layering solubilizing component comprises 12% of yeast grease, 1% of n-octanol and n-dodecanol: 2, fatty acid methyl ester and epoxidized fatty acid methyl ester 1: 6% of mixture of 1; the anticorrosive and antiswelling component comprises 1% of yeast grease, 1% of tributyl phthalate and 1% of trioctyl phthalate: 1, mixture 2% of cyclohexanone and alkylsalicylic acid 1: 3% of the mixture of 1; the carbon deposition removing clear colloid component comprises 2% of yeast grease, 3% of ethylene glycol, 1% of sec-butyl alcohol and hexanediol: 1, 4% of the mixture; the flash point extracting and pour point reducing component comprises 11% of yeast grease, butyl caproate and 1% of fatty glyceride: 1, 9% of a mixture of maleic and fumaric acid ester copolymers, 8%; the power-enhancing combustion-promoting component comprises 6% of yeast grease, 1% of cyclohexyl nitrate and isooctyl nitrate: 1, mixture of di-tert-butyl peroxide and heptane peroxide 1: 3, 15% of the mixture.
2. The methanol diesel consists of the following components in percentage by volume: 2 percent of anhydrous methanol, 10 percent of higher alcohols, 88 percent of diesel oil and 0.1 percent of methanol diesel oil additive, and all the components are added into a stirring container and stirred uniformly at normal temperature to obtain the methanol diesel oil finished product oil.
Example 3:
1. the methanol diesel additive comprises the following functional components in percentage by volume: 30% of an anti-layering fluxing component, 6% of an anti-corrosion and anti-swelling component, 6% of a carbon deposition removing colloidal component, 22% of a flash point improving and pour point reducing component and 36% of a power improving and combustion promoting component; all the components are added into a container and stirred uniformly at normal temperature to obtain a transparent and clear methanol diesel additive finished product.
Wherein, the anti-layering solubilizing component comprises 15% of yeast grease, 1% of n-octanol and n-dodecanol: 2, 9% of a mixture, 6% of epoxidized fatty acid methyl ester; the anticorrosive and antiswelling component comprises 1% of yeast grease, 1% of tributyl phthalate and 1% of trioctyl phthalate: 1, mixture 3% of cyclohexanone and alkylsalicylic acid 1: 2% of the mixture of 1; the carbon deposition removing clear colloid component comprises 1% of yeast grease, 1% of ethylene glycol and polyethylene glycol: 2, 2% of a mixture and 3% of n-butanol; the flash point and pour point improving component comprises 10% of yeast grease, 1% of palm oil and cottonseed oil: 1, EVA with WHP 1: 1, 7% of the mixture; the power-enhancing combustion-promoting component comprises 6% of yeast grease, cyclododecyl nitrate and 3-methyl-3-nitro-2-butyl nitrate 1: 3, mixture of 2-nitropropane and nitrobutane 2: 1, 16%.
2. The methanol diesel consists of the following components in percentage by volume: 6 percent of anhydrous methanol, 18 percent of polyhydric alcohol, 76 percent of diesel oil and 0.3 percent of methanol diesel oil additive, and all the components are added into a stirring container and stirred uniformly at normal temperature to obtain the methanol diesel oil finished product oil.
Example 4:
1. the methanol diesel additive comprises the following functional components in percentage by volume: 24% of anti-layering fluxing component, 9% of anti-corrosion and anti-swelling component, 8% of carbon deposition removing colloidal component, 21% of flash point improving and pour point reducing component and 38% of power improving and combustion promoting component; all the components are added into a container and stirred uniformly at normal temperature to obtain a transparent and clear methanol diesel additive finished product.
Wherein, the anti-layering solubilizing component comprises 10% of yeast grease, 5% of isooctanol, 1% of fatty acid methyl ester and epoxy fatty acid methyl ester: 9% of mixture of 1; the anticorrosive and anti-swelling component comprises 2% of yeast grease, 4% of alpha-methylnaphthalene, 1% of cyclohexanone and alkyl salicylic acid: 3% of the mixture of 1; the carbon deposition removing clear colloid component comprises 1% of yeast grease, 1% of ethylene glycol and polyethylene glycol: 2, mixture 3% of sec-butanol with hexanediol 1: 1, 4% of the mixture; the flash point and pour point improving component comprises 10% of yeast grease, 1% of palm oil and cottonseed oil: 1, EVA with WHP 1: 1, 4% of the mixture; the power-enhancing combustion-promoting component comprises 8% of yeast grease, cyclododecyl nitrate and 3-methyl-3-nitro-2-butyl nitrate 1: 3, mixture of di-tert-butyl peroxide and heptane peroxide 1: 3, 18% of the mixture.
2. The methanol diesel consists of the following components in percentage by volume: 10 percent of anhydrous methanol, 20 percent of higher alcohols, 70 percent of diesel oil and 0.5 percent of methanol diesel oil additive are added into a stirring container and are uniformly stirred at normal temperature to obtain the methanol diesel oil finished product oil.
Example 5:
1. the methanol diesel additive comprises the following functional components in percentage by volume: 20% of an anti-layering fluxing component, 9% of an anti-corrosion anti-swelling component, 9% of a carbon deposition removing colloidal component, 28% of a flash point improving and pour point reducing component and 34% of a power improving and combustion promoting component; all the components are added into a container and stirred uniformly at normal temperature to obtain a transparent and clear methanol diesel additive finished product.
Wherein, the anti-layering solubilizing component comprises 12% of yeast grease, 1% of n-octanol and n-dodecanol: 2, mixture of fatty acid methyl esters and epoxidized fatty acid methyl esters 1: 1, 4% of the mixture; the anticorrosive and antiswelling component comprises 2% of yeast grease, 1% of tributyl phthalate and trioctyl phthalate: 1, mixture 3% of cyclohexanone and alkylsalicylic acid 1: 1, 4% of the mixture; the carbon deposition removing clear colloid component comprises 2% of yeast grease, 1% of ethylene glycol and polyethylene glycol: 2, 4% of mixture and 3% of n-butyl alcohol; the flash point extracting and pour point reducing component comprises 12% of yeast grease, butyl caproate and 1% of fatty glyceride: 1, mixture 8% EVA with WHP 1: 1, 8% of the mixture; the power-enhancing combustion-promoting component comprises 5% of yeast grease, cyclododecyl nitrate and 3-methyl-3-nitro-2-butyl nitrate 1: 3, mixture 11% of 2-nitropropane and nitrobutane 2: 1, 18% of the mixture.
2. The methanol diesel consists of the following components in percentage by volume: 8 percent of anhydrous methanol, 22 percent of polyhydric alcohol, 70 percent of diesel oil and 0.4 percent of methanol diesel oil additive, and all the components are added into a stirring container and stirred uniformly at normal temperature to obtain the methanol diesel oil finished product oil.
Determination of the main test indices (20 ℃) after application of the methanol diesel additive described herein:
the above examples are only used for illustrating the present invention, wherein there are many combinations of different combinations of the components of the additive in different proportions, and different amounts of the additive in the finished oil, and these combinations are not described in detail; it will be appreciated that those skilled in the art can make modifications or changes to the embodiments described above, and all such modifications and changes are intended to fall within the scope of the appended claims.
Claims (2)
1. A methanol diesel oil additive based on yeast grease is obtained by the following method:
culturing a laboratory long-term domesticated strain HT-925 dermic trichosporium on an YPD culture medium at constant temperature, wherein the preservation number of the dermic trichosporium is as follows: CGMCC 14875; after the cultureThe bacteria were eluted with normal saline to obtain a concentration of 107～108Bacterial suspension per ml; inoculating the bacterial suspension into a seed culture medium consisting of glucose, yeast powder and urea, and carrying out enrichment culture to obtain a seed solution; inoculating the seed liquid into a fermentation culture medium which takes waste oil, starch factory wastewater and waste molasses as main bodies, and performing fermentation culture for 5-7 days at 25-32 ℃ under dissolved oxygen of 20-60% to obtain yeast grease;
the methanol diesel additive based on the yeast grease comprises the following functional components in percentage by volume: 20-30% of anti-layering solubilizing component, 5-10% of anti-corrosion anti-swelling component, 5-10% of carbon deposition removing clear colloid component, 20-30% of flash point improving and pour point reducing component and 30-40% of power improving and combustion promoting component;
the method is characterized in that:
the anti-layering solubilizing component comprises the following components in percentage by volume: 10-15% of yeast oil, 1% of isooctyl alcohol or n-octyl alcohol and n-dodecyl alcohol: 2, epoxy fatty acid methyl ester or fatty acid methyl ester and epoxy fatty acid methyl ester 1: 4-9% of the mixture of 1;
the anti-corrosion and anti-swelling component comprises the following components in percentage by volume: 1-2% of yeast oil, 1% of alpha-methylnaphthalene or tributyl phthalate and trioctyl phthalate: 1, 2-4% of cyclohexanone or cyclohexanone and alkyl salicylic acid 1: 2-4% of the mixture of 1;
the carbon deposit removing colloid component consists of the following components in percentage by volume: 1-2% of yeast grease, 1-2% of ethylene glycol or ethylene glycol and polyethylene glycol: 2-4% of a mixture of n-butanol or sec-butanol and hexanediol 1: 2-4% of the mixture of 1;
the flash point increasing and pour point reducing component comprises the following components in percentage by volume unit: 10-15% of yeast oil, 1% of palm oil and cottonseed oil: 1 or butyl caproate with fatty acid glycerides 1: 1, copolymer of maleic ester and fumaric ester or EVA and WHP 1: 4-9% of the mixture of 1;
the power-promoting combustion-promoting component consists of the following components in percentage by volume unit: 5-10% of yeast grease, 1% of cyclohexyl nitrate and isooctyl nitrate: 1 or cyclododecyl nitrate with 3-methyl-3-nitro-2-butyl nitrate 1: 3, 10-15% of a mixture of 2-nitropropane and nitrobutane 2: 1 or di-tert-butyl peroxide with heptane peroxide 1: 3, 15-20% of the mixture.
2. A methanol diesel fuel containing the methanol diesel fuel additive of claim 1, which is characterized by comprising the following components in percentage by volume: 10-30% of anhydrous methanol and higher alcohols, 70-90% of diesel oil and 0.1-0.5% of methanol diesel oil additive; the anhydrous methanol, the multi-carbon alcohol, the diesel oil and the methanol diesel oil additive component are added into a stirring container and are uniformly stirred at normal temperature, and the methanol diesel oil is obtained.
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