84 results about "Biodiesel feedstock" patented technology

A method comprising applying controlled flow cavitation apparatuses and holding tanks to a pretreatment process in order to reduce the free fatty acid content of a biodiesel feedstock. A feedstock comprising a high content of free fatty acids can be passed through controlled flow cavitation apparatuses and holding tanks at a velocity capable of generating hydrodynamic cavitation zones and subsequent dwell times where the free fatty acid content can be reduced to below 2%.

The invention relates to an oil-producing yeast strain and a method for preparing biological grease; the oil-producing yeast strain is Trichosporon cutaneum CX1 with the collection No. of CGMCC No. 2527; the method for producing the biological grease by using the oil-producing yeast is as follows: hydrolyzate of stalks is generated after pretreatment and the hydrolysis of crop stalks; a basic inorganic salt component is added in the hydrolyzate, and the oil-producing yeast can utilize sugar and other organic matters in the hydrolyzate for growth and metabolism, thereby generating the grease; the generated grease is stored in cells, and then the biological grease is obtained by extracting the grease in the cells. The invention has the advantages that the composition of the generated grease is similar to vegetable oil, and the grease can be used as the raw material for producing biodiesel; compared with the existing other processes, the invention greatly expands the sources of the grease raw material of the biodiesel and significantly reduces the costs of the raw material grease of the biodiesel.

The process of preparing microbial oil with steam blasted stalk hemicellullose hydrolysate includes the following steps: water soaking steam blasted stalk and filtering to obtain the steam blasted stalk hemicellullose hydrolysate, sterilizing, inoculating oil microbe seed liquid in 1-5 vol%, fermentation at 25-32 deg.c for 5-8 days, filtering to obtain mycelium and stoving, and extracting with organic solvent to obtain the microbial oil. The microbial oil containing high unsaturated fatty acid is applied in producing biodiesel oil. The present invention has best utilization of stalk material and low production cost.

The invention discloses a method for carrying out asexual cuttage propagation on vernicia fordii, belonging to the technical field of asexual propagation of plants. The method comprises the following steps of: (1) branch collecting time; (2) seedbed preparation and cuttage environment; (3) selection of cuttings and treatment of cutting branches; (4) pretreatment of a growth regulator; (5) cuttage; and (6) management after cuttage. The method provided by the invention is simple and feasible, has the advantages of low cost and short cycle and can conduce to realization of effective and rapid asexual propagation of the vernicia fordii. The method has the beneficial effect of solving the problem that the vernicia fordii can not root during cuttage, and has very important effects on and significance for accelerating popularization of excellent clone of the vernicia fordii and promoting construction of biodiesel raw material forests.

The invention discloses a method for producing microbial grease by fermenting inulin serving as a raw material. The method comprises the following steps of: hydrolyzing the inulin raw material by using inulase to prepare an inulin hydrolysate, adding yeast extract, peptone, potassium dihydrogen phosphate and MgSO4.7H2O into the inulin hydrolysate to obtain an inulin hydrolysate fermentation medium, inoculating trichosporon cutaneum seed liquid to the fermentation medium, performing fermentation culture, obtaining microbial grease bacteria by centrifuging after culture, drying the microbial grease bacteria, extracting the grease in the cells of the dried microbial grease bacteria by using an organic solvent chloroform-methanol method, and thus obtaining the microbial grease. By the method for producing the microbial grease by using the inulin, the grease raw material source of biodiesel is greatly expanded, the cost of the grease raw material for the biodiesel is remarkably lowered, and meanwhile, the problem of low value utilization of jerusalem artichoke tubers in the prior art is solved.

Embodiments of the present application provide methods for processing biodiesel from feedstock using a single-step process. The methods can include, for example, use of a gaseous catalyst as part of the esterification/transesterification process. Embodiments of the present application also provide systems for the methods thereof.

The invention relates to a rice bran oil, specifically to a method for producing diesel oil by esterification deacidification of the rice bran oil, and belongs to the technical field of chemical industry. By the adoption of zinc oxide as a catalyst, the rice bran crude oil with high acid value undergoes esterification deacidification and is deacidified into a biodiesel material. The acid value of the rice bran oil can be decreased from 38.14mg/g to 5.17mg/g. Free fatty acid in the rice bran oil can react with glycerin at high temperature under vacuum in the presence of a catalyst to generate triacylglycerol, diacylglyeerol and monoglyceride. According to the chemical principle to design a chemical catalysis method, a lot of free fatty acid in the rice bran crude oil undergoes resterification to generate neutral oil. And simultaneously, the purpose of deacidification is achieved and the pollution of soap stock to the environment is eliminated. Additional loss is greatly reduced. And in the meanwhile, inevitable loss caused by free fatty acid which must be removed during the above chemical alkali refining and physical deacidification refining processes is changed into neutral rice bran grease, so as to raise the refining yield of the grease.

The invention discloses a method for producing biodiesel raw materials from Botryococcus braunii. The method includes the steps of (1), seed culture, (2), seed collection, (3), photoautotrophic culture, (4), microalgae harvest and (5) grease extraction. The method is used for culturing algae cells capable of controlling the oil content and the high-grease quality through introduction of indexes for representing the biodiesel quality, such as a cetane number and a ratio of unsaturated fatty acid to saturated fatty acid in terms of a culture condition and a culture technology of microalgae, and the grease content of the finally obtained algae cells is above 30%, a CN value is stabilized above 50, and the ratio of the unsaturated fatty acid to the saturated fatty acid between 1.5 and 2.5. The method is capable of effectively controlling the output and the quality of biodiesel from source raw materials and meets the application requirements of microalgae biodiesel industrialization.

The invention discloses a gaseous phase circulation production method for biodiesel, which comprises that: firstly, a biodiesel raw material is sent into a reaction kettle, and the biodiesel raw material is heated while a catalyst is added into the reaction kettle; and then, methanol vapor after vaporization is injected into the reaction kettle, and the methanol vapor and the raw material are subjected to ester exchange reaction to generate the biodiesel. The invention also discloses a device for implementing the gaseous phase circulation production method for the biodiesel, which comprises the reaction kettle; a lower part of the reaction kettle is connected with an upper part of a methanol generator; an upper part of the reaction kettle is connected with a cooler which is connected witha methanol recovery tower through a storage tank; the methanol recovery tower is connected with a methanol storage tank through a pump; and the methanol storage tank is connected with a lower part ofthe methanol generator. The gaseous phase circulation production method improves the temperature in the reaction kettle so as to shorten the esterification time, improve the oil rate of the biodiesel,reduce ethanol consumption by 50 percent and greatly improve productivity.

The invention discloses microemulsified biodiesel and a preparation method thereof. The microemulsified biodiesel comprises: by weight, 88 to 92% of biodiesel, 1.0 to 2.0% of an emulsifier EL-12 (castor oil-ethylene oxide condensation product), 1.0 to 2.0% of Span 80 (sorbitan monooleate), and 5 to 10% of water, wherein a use amount ratio of the emulsifier EL-12 to the Span 80 is in a range of 0.9 to 1.1. The preparation method comprises the following steps of uniformly mixing the biodiesel, the emulsifier EL-12 and the Span 80 according to the above ratios, and adding a certain amount of water into the mixture with stirring. The microemulsified biodiesel has wide raw material sources, needs simple preparation processes and has a low cost. After microemulsification, the microemulsified biodiesel has low viscosity, good stability and a high combustion ratio, and can be used widely.

The invention relates to scenedesmus capable of highly yielding oil as well as a culture method and application thereof. An alga variety separated from a eutrophic water region is subjected to 18S rDNA sequence analysis and microstructure morphology identification so that the alga is determined as the member of Scenedesmus sp. and the sequence number is KF999043. The alga strain is named as Scenedesmus quadricauda SDEC-8 and is preserved in China Center for Type Culture Collection on October 8, 2014; and the preservation number is CCTCC NO: M2014448. An oil production culture method comprises the following steps: separating single alga cells of the Scenedesmus quadricauda SDEC-8 and carrying out aeration enlarged cultivation on obtained pure cells under laboratory conditions. The Scenedesmus quadricauda SDEC-8 contains rich high-quality oil; and the oil content can be up to 31.8% of the dry weight of the cells and the content of saturated fatty acids in fatty acids can be up to 80%, so that the Scenedesmus quadricauda SDEC-8 can be used as the raw material of biodiesel. Based on a high cetane number (61.38) and a low iodine number (29.38gI2/100g), the biodiesel prepared by taking the microalga as the raw material has good oxidization stability.

A method is disclosed to form an animal feed from cottonseed. The method provides cottonseed and an extruder, and extrudes the cottonseed using temperatures greater than 260° F. to form an extrudate. The method extracts from the extrudate oil suitable for a biodiesel feedstock, and then forms an animal feed comprising the extrudate.

The invention relates to a spiral-type jatropha curcas crude oil extraction machine, and belongs to the field of biodiesel raw material oil extraction machines. The spiral-type jatropha curcas crude oil extraction machine comprises a machine frame, a squeezing oil extraction device and a power device. The machine frame is composed of bearing supports, plated grillages and a motor rack. The plated grillages are welded to the upper ends of the bearing supports. The plated grillages and the bearing supports form brackets, and the number of the brackets is two. The squeezing oil extraction device is installed on the two plated grillages. The motor rack is installed on the side wall of the bearing support of one of the brackets in a welding mode. The power device is installed on the motor rack. The power device and the squeezing oil extraction device are connected. According to the spiral-type jatropha curcas crude oil extraction machine, power is transmitted to the squeezing oil extraction device through the power device, squeezing oil extraction of jatropha curcas is achieved through the squeezing oil extraction device, oil and residues are separated, and therefore the jatropha curcas crude oil yield is greatly increased, the jatropha curcas crude oil quality is greatly improved, jatropha curcas crude oil extraction efficiency is also improved, and distribution and collection of the oil and the residues are guaranteed; and the structure is simple, operation is easy and convenient, parts can be installed and replaced easily, and the spiral-type jatropha curcas crude oil extraction machine can further be used for squeezing shell cracking oil extraction operation of oil crops with the seed particles and dimensions being similar to those of the jatropha curcas.

The present invention relates to the technical fields of forest product deepening and processing, and renewable energy resources, and a method for preparing rosin methyl ester and a compound biodiesel raw material through pine oleoresin. The method comprises: mixing the pine oleoresin and turpentine oil according to a mass ratio of the pine oleoresin to the turpentine oil of 1:0.4-1.2; heating, melting and filtering; adding the resulting filtrate and methanol to an autoclave according to the mass ratio of the filtrate to the methanol of 1:0.05-0.5, introducing 0-4 MPa of CO2 to the autoclave, wherein the CO2 is adopted as a cosolven to carry out a reaction under a supercritical state or a subcritical state; carrying out standing and demixing for the product after completing the reaction, wherein the upper layer is an alcohol phase, and is subjected to atmospheric distillation to recover the methanol, the lower layer is an oil phase, is subjected to atmospheric distillation to recover the methanol, and then is subjected to a CO2 circulating gas introducing method or a super heating steam method to carry out vacuum distillation and separation to obtain the rosin methyl ester and the compound biodiesel raw material. The method provided by the present invention has advantages of simple production process, environmentally friendly property, no requirement of the catalysts, improvement of the economic feasibility of the biodiesel preparing through the pine oleoresin, and the like.

The invention provides a treatment method of landfill leachate tail water based on an advanced oxidation combination technology. The treatment method comprises the following steps: (1) putting a certain amount of coagulant in the landfill leachate tail water, standing, and realizing separation in a coagulation unit; (2) enabling a supernatant of the coagulation unit to enter a Fenton unit, addingFeSO4 and H2O2, and fully mixing and reacting with the supernatant; (3) enabling effluent of the Fenton unit to enter a microalgae photobioreactor, and carrying out deep treatment. According to the treatment method of the landfill leachate tail water, provided by the invention, a traditional nitrification/denitrification aerated biological filter unit can be replaced, the microalgae photobioreactor is utilized for carrying deep treatment on the effluent treated by the Fenton unit, residual pollutants such as COD (Chemical Oxygen Demand), organic matters, ammonia nitrogen, nitrate nitrogen andphosphorus in water can be removed, and various indexes of the effluent can be comprehensively upgraded; meanwhile, generated microalgae biomass can be used as animal feed or a biological diesel raw material, so that the treatment cost of leachate is reduced.

The invention discloses a kitchen waste treatment equipment system. The kitchen waste treatment equipment system comprises a pretreatment and biochemical degradation system, a waste gas treatment system, a special shed body and an oil-water separator, wherein the pretreatment and biochemical degradation system is used for degrading particle residues generated after pretreatment such as strong crushing and extrusion dehydration of materials in a microbial fermentation manner; the waste gas treatment system is used for treating waste gas generated after degradation and discharging the waste gas after the waste gas reaches the standard; the special shed body is used for meeting the requirement of space sealing during equipment installation; and the oil-water separator is used for performing oil-water separation on oil-containing wastewater after extrusion dehydration and respectively treating wastewater and oil which are separated from each other, the treated wastewater is discharged after reaching the standard, and the oil is taken as a biodiesel raw material. According to the kitchen waste treatment equipment system, a high-temperature aerobic fermentation process is adopted, and the treatment effect of organic waste is improved. The kitchen waste treatment equipment system has the advantages of low energy consumption, low operation cost, small occupied area and the like.

The invention relates to a method for preparing grease raw materials for biodiesel from elaeagnus angustifolia pit. The method includes 1 cleaning, 2 smashing and separating, 3 ultrasonic-assisted Soxhlet extraction, 4 impurity removing and grease separating, 5 grease degumming, 6 grease deacidifying and 7 grease purifying. The method has the advantages that the extraction efficiency can be improved by the aid of smashing and separating and ultrasonic-assisted extraction processes, the grease raw materials can be applied to preparing the biodiesel and can be reasonably utilized as compared with existing discarded elaeagnus angustifolia pit, the method is beneficial to applying natural renewable resources on a large scale, and the problems in the aspect of the requirements of the mankind onenergy sources can be solved by the aid of the method; experiment procedures are simple, biomass resources can be sufficiently effectively utilized, the method has low requirements on equipment, andthe grease raw materials can be industrially produced by the aid of the method.