27 results about "Biodiesel production" patented technology

The utility model relates to the technical field of biodiesel production, in particular to a catalyst separation and recovery device for converting waste oil and fat into biodiesel, which comprises a separation tank. A feed pipe is fixedly connected to the rear position at the upper end of the separation tank, a waste discharge pipe is fixedly connected to the middle position at the lower end of the separation tank, two observation windows are fixedly connected to the front surface of the separation tank, and two adjusting components are arranged at the front position at the upper end of the separation tank. The adjusting components include a positioning sleeve, a connecting seat, a threaded sleeve, a first bevel gear, a second bevel gear, an electric motor, a threaded pipe, a connecting block, a positioning block, a discharge pipe, a first suction pipe, a second suction pipe, a positioning rod and a limiting block; the threaded pipe is driven to lift through the adjusting components, so as to adjust the heights of the first suction pipe and the second suction pipe, so that the floating oil and esterified glycerol can be accurately sucked, the separation quality of the esterified glycerol is effectively improved, the purity of the catalyst recovery is further improved, and the waste of the esterified glycerol is avoided.

The invention relates to a method for removing free fatty acids and optionally water from the oils and fats used for the production of biodiesel and from the crude esters produced during the production of biodiesel by extracting the free fatty acids with a mixture of basic organic nitrogen compounds and water as an extraction agent.

The invention discloses an efficient recovery and regeneration method of a p-toluene sulfonic acid catalyst in biodiesel esterification reaction, and particularly relates to the technical field of biodiesel production, and the method comprises the following steps: S1, hot water dissolution and layering, S2, methanol recovery through reduced pressure distillation, S3, dynamic adsorption and impurity removal through a composite adsorbent, and S4, two-stage regeneration treatment on a concentrated solution after adsorption purification. Through hot water dissolution, reduced pressure distillation, composite adsorption impurity removal and two-stage regeneration processes, efficient recovery and cyclic utilization of the p-toluene sulfonic acid catalyst are realized, the catalyst cost and the loss of raw materials such as methanol are greatly reduced, the economic benefit is remarkably improved, the discharge of acidic wastewater can be reduced, the corrosion rate of equipment is reduced, and the method is suitable for industrial production. Meanwhile, the high activity of the catalyst in recycling is guaranteed, the production continuity is ensured, and the method has the multiple advantages of economy, environmental protection and stable production.

The present application relates to the technical field of biodiesel preparation, and particularly relates to an integrated heat and power comprehensive biodiesel preparation system, which comprises a solar drying system, a zeolite activation system, a catalyst preparation system and a biodiesel preparation system. The solar drying system is used for cleaning eggshells, drying the cleaned eggshells and conveying the eggshells to the catalyst preparation system. The zeolite activation system is used for activating zeolite, improving the adsorption performance and ion exchange performance of the zeolite, recycling waste heat and conveying the activated zeolite to the catalyst preparation system. The catalyst preparation system is used for preparing calcium methoxide solid base catalyst. The solar drying system and the zeolite activation system are connected to the catalyst preparation system. The biodiesel preparation system is used for preparing biodiesel. The catalyst preparation system and the biodiesel preparation system are connected. The catalyst is prepared by using waste eggshells and methanol. Two wastes are recycled and utilized. High-temperature calcination and soaking are combined, so that the activation process of the zeolite is sufficient and thorough.

Recombinant yeasts bioengineered to overexpress genes for utilization of cellulosic and hemicellulosic fibers and / or produce lipid, and methods of use thereof. The yeasts are modified to express, constitutively express, or overexpress an exo-cellobiohydrolase I, an exo-cellobiohydrolase II, an endoglucanase, an endoxylanase, or any combination thereof. The yeasts may also be modified to express, constitutively express, or overexpress a lytic polysaccharide monooxygenase, an arabionofuranosidase, a xylanases, an acetylxylan esterase, or any combination thereof. The methods include cultivating the recombinant yeasts to convert low value organic stillage byproducts such as cellulose and hemicellulose into lipids suitable for biodiesel production and other higher value uses.

The invention belongs to biodiesel production equipment, particularly relates to the field of bio-enzyme catalytic reaction, and discloses a bio-enzyme catalytic reaction device and method for pure biodiesel. The bio-enzyme catalytic reaction device comprises a base, a second storage box is fixed to the other side of the top of a reaction kettle, and a first pre-storage barrel is fixed to the bottom of the second storage box; a second pre-storage cylinder is slidably connected into the first pre-storage cylinder, a third electric valve is fixed at the bottom of the second pre-storage cylinder, and the third electric valve extends into the reaction kettle. According to the bio-enzyme catalytic reaction device for the pure biodiesel, a second sliding rail and a third piston can be moved left and right before the device is used, the overall cross sectional area of the second piston and the third piston can be conveniently adjusted, and therefore the unit oil pumping amount of an oil cylinder is adjusted, and the larger the left moving distance of the third piston is, the shorter the linkage downward moving distance of a second pre-storage barrel is; the smaller the overall pre-storage capacity of the first pre-storage cylinder and the second pre-storage cylinder is, the telescopic amount of the electric telescopic rod can be adjusted according to the matching requirement.

The invention relates to the technical field of catalysts, and particularly discloses a liquid catalyst, a preparation method and a method for producing second-generation biodiesel, the liquid catalyst comprises a transition metal component, a functional element auxiliary agent and a compound surfactant; wherein transition metal in the transition metal component is at least two of iron, nickel, cobalt and molybdenum, and the concentration of the transition metal is 0.5-5 wt%; functional elements in the functional element additive comprise lanthanum and ruthenium, and the concentration of the functional elements is 0.1-5 wt%; the molar ratio of lanthanum to ruthenium is (1.5-2): 1; the concentration of the compound surfactant is 0.05 to 0.5 weight percent; the liquid catalyst is used for biodiesel production in a continuous suspended bed reactor. The catalytic activity and stability of the liquid catalyst in the second-generation biodiesel preparation can be improved, and the problem that the liquid catalyst is difficult to recover can be solved.

This utility model discloses a material mixing device for crude ester desulfurization in biodiesel production: the crude ester desulfurization material mixer is vertically arranged, with upper and lower large flanges connected to the upper and lower ends of its barrel, respectively. A conical collection hopper is connected to the other side of the lower large flange. Three sets of nitrogen aeration discs, each consisting of two pairs of small flanges connecting half a nitrogen aeration disc, are installed inside the barrel and fixed to an aeration disc support. A nitrogen inlet pipe is fixed to the nitrogen aeration disc. The top of the aeration disc support is welded to the upper large flange. The upper large flange connects to three material pipelines: a nitrogen inlet pipeline with a valve, a desulfurizing agent pipeline with a pump and valve, and a crude ester pipeline. The outlet pipe of the conical collection hopper is connected in sequence to a ball valve at the bottom of the mixer, a crude ester discharge pump, and a ball valve at the crude ester settling tank inlet, before being connected to the top of the crude ester settling tank. This utility model achieves good mixing of various materials, uniform and stable desulfurization effect, low desulfurization cost, and convenient and efficient operation during crude ester desulfurization in biodiesel production.

The application relates to the field of bio-diesel, and discloses a bio-diesel production device. In the application, the bio-diesel production device comprises a filter barrel, a filter screen is slidably connected in the filter barrel, a side extension rod is fixedly connected to the top end of the filter screen, a supporting ring is fixedly installed at the top end of the side extension rod, a lifting rod is fixedly connected to the side end of the supporting ring, a hydraulic rod is installed at the top end of the lifting rod, a support is fixedly installed at the side end of the hydraulic rod, a pressing barrel is fixedly connected to the top side end of the support, an oil outlet pipe is fixedly connected to the lower end of the pressing barrel and located in the filter barrel, a liquid discharge pipe is fixedly connected to the bottom side end of the filter barrel, and a catalytic reaction barrel is fixedly installed at the other end of the liquid discharge pipe away from the filter barrel. The device can automatically press and extract oil liquid from bio-raw materials before reaction, filter the oil liquid, conveniently recycle and process the filtered tissue materials, reduce impurities of the raw materials, and improve product quality.

The application provides a precise regulation method for rapid growth of high-fat acid microalgae biomass in Xinjiang special environment. Through red light / blue light alternate irradiation, dynamic nitrogen supply and salinity-low temperature combined stress, the daily average growth rate of microalgae biomass is greater than or equal to 120 mg / L, and the total fat content is greater than or equal to 35%. The method breaks through the contradiction between growth and lipid accumulation in traditional culture, and the light energy utilization rate is increased by 25%, which is suitable for large-scale development of desert microalgae resources and biodiesel production.

The utility model discloses a glycerol residue demulsification and sedimentation device in biodiesel production, which comprises a stainless steel stirring tank with a jacket, a dial thermometer and a magnetic flap liquid level meter, a stirrer, an observation sight glass and a feeding pipe on the top of the tank, a hydrophobic valve on the side of the upper part of the tank, a steam inlet valve on the lower part of the tank, a glass liquid level meter on a stainless steel feeding tank, an outlet pipeline connected to the top of the stainless steel stirring tank, a glycerol buffer bag and a pneumatic valve connected to the outlet pipeline of the stainless steel stirring tank, a glycerol storage tank connected to the other end of the outlet pipeline, a gear pump connected to the outlet pipeline of the glycerol storage tank, a sampling ball valve arranged in front of the gear pump, and an outlet pipeline of the gear pump connected to the feeding pipeline of the stainless steel stirring tank and a glycerol recovery pipeline. The utility model has the advantages of high efficiency and reliability in the glycerol residue demulsification and sedimentation treatment in biodiesel production, which can greatly improve the raw material utilization rate and the product yield in biodiesel production and reduce the difficulty in subsequent processing of the by-product crude glycerol.

The application provides a treatment method of waste oil and fat biodiesel acid water, and the method can separate waste sulfuric acid, methanol and organic impurities in the biodiesel acid water and recycle the waste sulfuric acid after concentration, avoids pollution caused by direct discharge of the biodiesel acid water to the environment, realizes recycling of the sulfuric acid, and greatly reduces the chemical oxygen demand (COD) of the biodiesel acid water, effectively reduces the difficulty of waste water treatment, and saves the production cost of enterprises.

The invention provides application of lipoprotein lipase tolerant to an organic reagent in biodiesel preparation, and belongs to the technical field of enzyme engineering. The invention provides an application of lipoprotein lipase expressed by a recombinant pseudomonas aeruginosa strain PAO1-pBBR1MCS-5-LPL in the production of biodiesel by catalyzing oil and fat. The lipoprotein lipase has good tolerance to one or more than two conditions in organic reagents, high temperature and acidic and alkaline environments. According to the method, the lipoprotein lipase produced by the pseudomonas aeruginosa is used for catalyzing the waste edible oil and fat, so that the biodiesel can be efficiently synthesized. The lipoprotein lipase has wide application prospects in industrial diesel oil production in the future, the scheme is high in feasibility, and remarkable environmental benefits can be brought.

The invention relates to ultra-low-sulfur pure biodiesel production equipment and method, and belongs to the technical field of pure biodiesel production.The ultra-low-sulfur pure biodiesel production equipment comprises a modular support, a pretreatment barrel is arranged at the top of the modular support, a feeding opening is formed in the top of the pretreatment barrel, and a cyclone centrifugal machine is arranged at an outlet of the pretreatment barrel; the outer wall of the cyclone centrifugal machine is fixedly connected with a material conveying pipe through a connecting pump, and one end of the material conveying pipe is fixedly connected with a main dehydration and desulfurization tower. The first conversion plate and the second conversion plate can switch the use states of the main dehydration and desulfurization tower and the auxiliary dehydration and desulfurization tower according to the service life of an adsorbent in the main dehydration and desulfurization tower when raw materials are conveyed into the main dehydration and desulfurization tower through the material conveying pipe, so that the problem that the adsorbent in a single dehydration and desulfurization tower is damaged when being disassembled, assembled and replaced is prevented; the continuity of raw material production treatment is influenced, and the efficiency of raw material production treatment is reduced.

The utility model relates to the technical field of biodiesel production, and particularly discloses a biodiesel conveying device which is characterized in that a cylinder body is rotatably mounted in a pump shell, coil seats are uniformly and fixedly mounted in the cylinder body, electromagnetic coils used for generating a magnetic field are fixedly mounted on the coil seats, and the electromagnetic coils are fixedly mounted in the cylinder body. An iron core is fixedly installed in the coil base, conductive ball bases used for conducting electricity to the electromagnetic coil are symmetrically and fixedly installed at the side end of the coil base, conductive balls used for conducting electricity to the conductive ball bases are rotatably installed in the conductive ball bases, and rubber diaphragms are evenly installed on the cylinder body. A magnetic suction sheet is fixedly mounted on the rubber diaphragm; the electromagnetic coil is powered on to generate magnetic force, the magnetic attraction piece is attracted to enable the rubber diaphragm to pump diesel oil, an original piston is replaced, and therefore lubricating oil is not needed to solve the problems of smooth sliding and sealing performance, and the effect that pollution cannot be caused when biodiesel is transported is achieved.

This invention relates to a method for preparing acrylic acid from glycerol. The method includes steps such as dehydration, oxidation, and purification. This method offers significant advantages in terms of a short process flow and safe, reliable operation. The acrylic acid prepared by this invention is a bio-based product with excellent environmental characteristics, aligning with the current trend of green chemistry. Compared to traditional petroleum-based acrylic acid preparation methods, this invention uses glycerol as a raw material. Glycerol can be obtained in large quantities from byproducts of biodiesel production, making it widely available and renewable, effectively reducing dependence on petroleum resources and alleviating the pressure caused by petroleum resource shortages. The yield of acrylic acid prepared from glycerol in this invention reaches over 70%.

The invention relates to the field of safety monitoring, in particular to a safety and environmental protection management system based on biodiesel production, which is characterized in that a multi-dimensional acquisition module, a construction module, a tendency analysis module and a safety analysis module are arranged for cooperative work, and audio information and vibration information are acquired based on the multi-dimensional acquisition module; the construction module obtains a pipeline topology network and calculates multi-dimensional feature masking parameters, the tendency analysis module determines the multi-dimensional feature masking tendency of a pipeline section, the safety analysis module adopts different strategies to judge whether the pipeline section is abnormal or not based on the multi-dimensional feature masking tendency, and the safety analysis module judges whether the pipeline section is abnormal or not for the multi-dimensional feature high masking tendency. According to the method, whether the pipeline section is abnormal or not is judged in combination with multi-dimensional data, the low covering tendency of multi-dimensional features is achieved, audio information and vibration information are converted to a frequency domain, whether the pipeline section is abnormal or not is judged based on the frequency domain amplitude of each frequency domain section, and therefore the monitoring comprehensiveness and reliability of the system are improved, and meanwhile the monitoring efficiency is improved.

The utility model relates to the technical field of biodiesel production, and particularly discloses a biodiesel byproduct glycerol recovery device, which is characterized in that an electromagnetic coil for generating a high-frequency alternating magnetic field is fixedly arranged in a recovery separation barrel, and heating rods for heating mixed liquid are uniformly and fixedly arranged in the recovery separation barrel; a waste liquid condensation cone used for cooling high-temperature gas is fixedly installed in the condensation box. After the electromagnetic coil is electrified, a changing magnetic field is formed in the recycling and separating barrel, at the moment, a plurality of heating rods can generate eddy current in the magnetic field, due to the fact that the heating rods have certain resistance, the heating rods can rapidly emit heat under the action of the eddy current, the heating rods can heat mixed liquid located on the periphery, and the heating effect of the heating rods is improved. And the uniformly distributed heating rods directly heat in the mixed liquid, so that the heating speed is increased, the heating is more uniform, and the effect of improving the recovery efficiency is achieved.

The application discloses a solid alkali magnetic catalyst and a preparation method and application thereof, and belongs to the technical field of biomass liquid fuel production, and the solid alkali magnetic catalyst comprises nickel clusters and active components, and the nickel clusters are dispersed on the surfaces of the active components; wherein the nickel clusters are core-shell structures with graphite carbon as a shell layer and nickel particles as a core layer; and the active components are metal oxides. That is to say, the graphite coating of nickel is realized through a simple gelation and calcination method, nickel clusters are formed, and then potassium oxide is loaded to form a composite catalyst which is strong in magnetism, high in stability and excellent in catalytic activity. Compared with traditional catalysts, the catalyst prepared by the application has the characteristics of efficient recovery and recycling, and the environmental influence and economic cost of biodiesel production are significantly reduced.

The invention discloses a biodiesel synthesis reaction kettle with multi-stage stirring and temperature control in the technical field of biodiesel production, which comprises a reaction kettle and a main shaft, the main shaft is provided with at least two groups of stirring components, and the main shaft is used for driving the stirring components to stir; the connecting assemblies correspond to the stirring assemblies in number and are used for the main shaft and the stirring assemblies; the stirring assemblies are vertically and slidably connected with the corresponding connecting assemblies, the connecting assemblies are provided with adjusting units, and the adjusting units are used for adjusting the vertical heights of the stirring assemblies on the connecting assemblies; the stirring assembly and the main shaft do not need to be desoldered, adjustment can be achieved only by operating the adjusting unit or disassembling and assembling the limiting plate, repeated adjustment is supported, different raw materials and technologies are adapted, shutdown time is shortened, and operation and equipment maintenance cost is reduced; meanwhile, the distance can be accurately adjusted, excessive stirring energy consumption and waste are avoided, high-temperature impact is avoided through mechanical clamping and sliding adjustment, the main shaft and the stirring assembly are protected, the service life of equipment is prolonged, and energy consumption and loss expenditure are reduced.

A process for producing fatty acid C1-C4-alkyl esters, useful as biofuel. from an organic oil source is provided, wherein the oil source contains a triglyceride and a free fatty acid in an amount of at least 0.1 wt %, based on the total weight of the organic oil source. the process comprising a) reacting the organic oil source with a C1-C4-alkanol in the presence of an alkaline catalyst to form an ester phase and a glycerol phase: and b) isolating the fatty acid C1-C4-alkyl esters from the ester phase: wherein the alkaline catalyst is a mixture of metal alkoxides.

The present invention is related to the use of nitrates of ethers of glycerol and ethanol as diesel cetane improvers, and the production process of the same, aiming at producing an additive from glycerol from biodiesel production and bringing to the additive market an option more economical and efficient to facilitate the ignition of diesel and improve the cetane number of said fuel.

The invention discloses a device for recovering methyl ester contained in asphalt during biodiesel production, the device comprises a raw material tank, a getter pump and a water-sealed tank, the top surface of the raw material tank is fixedly connected with a protective cover, a threaded heating rod is installed in the raw material tank, the getter pump is communicated with a gas suction pipe, and the gas suction pipe is communicated with the water-sealed tank. One end of the air suction pipe is communicated with the raw material tank, and the other end of the air suction pipe is communicated with the water-sealed tank. Through layered work of a first defoaming part and a second defoaming part in the defoaming assembly, surface bubbles and deep bubbles in the water-sealed tank can be subjected to comprehensive defoaming treatment, it is ensured that the bubbles at different positions can be eliminated, when the methyl ester flow is increased, the rotating speed of a first rotating plate and the rotating speed of a second rotating plate are synchronously increased, and the rotating speed of the first rotating plate and the rotating speed of the second rotating plate are increased. And the generated strong centrifugal force drives the expansion plate to overcome the tension of the spring and slide out along the radial direction of the groove, so that the effective action area of the two rotating plates is enlarged, and a bubble generation area expanded due to increase of air flow can be quickly covered.

This invention discloses a palm kernel oil hydrodeoxygenation catalyst and its preparation method, belonging to the field of bioenergy catalysis technology. The catalyst includes a support and an active component loaded on the support; the support is modified alumina, obtained by rare earth element doping modification of alumina; the active component is a nickel-molybdenum composite active component, with nickel loading of 3%-8%, molybdenum loading of 5%-12%, and rare earth element doping of 0.5%-3% based on 100% of the total catalyst mass. This invention, through a fully innovative chain design of "rare earth doping modified support - precise ratio of nickel and molybdenum active components - phosphorus-co-catalytic synergy - stepwise controllable preparation - mild application conditions," forms a highly efficient catalytic system suitable for palm kernel oil hydrodeoxygenation to biodiesel production, possessing four core advantages: superior performance, strong stability, economical process, and industrial adaptability.

The invention relates to an oil-water separation device and method for pure biodiesel production, and belongs to the technical field of biodiesel oil-water separation, the oil-water separation device comprises a pretreatment tank, a liquid conveying pipe is arranged at the bottom of the pretreatment tank, one end of the liquid conveying pipe is fixedly connected with a separator tank, and the outer wall of the separator tank is fixedly connected with a main separation tank through a connecting pipe. According to the present invention, with the main aeration roller and the auxiliary aeration roller, when the mixed liquid is input into the pretreatment tank for pretreatment, in order to improve the sufficient mixing effect of the demulsification liquid and the mixed liquid, the liquid drives the turbine blade to rotate, the first gear is driven to rotate under the connection of the rotating shaft, and the first gear rotates through the rotation of the second gear so as to improve the demulsification effect; the main aeration roller and the auxiliary aeration roller are respectively driven to continuously rotate, and gas is conveyed into the aeration rollers and flows out of the aeration holes under the connection of the gas supply pump and the rotary joint, so that the effect of conveniently damaging the demulsification liquid is achieved, and the mixing sufficiency of the mixed liquid and the demulsification liquid is improved.

The invention discloses a high-catalytic-efficiency lipase-mediated biodiesel production method, and belongs to the technical field of biodiesel preparation, and the method comprises the following steps: S1, taking waste animal and vegetable oil as a raw material, filtering the raw material to remove impurities, washing the raw material to remove phospholipid and inorganic acid, and adjusting the pH value to 5-5.5 to obtain pretreated waste animal and vegetable oil; s2, preparing a slow-release emulsifier, mixing the slow-release emulsifier with the pretreated waste animal and plant grease, uniformly stirring, sequentially adding water and liquid lipase, and continuously stirring to obtain a uniform oil-water interface reaction system; s3, methanol is added into the oil-water interface reaction system by a metering pump at 40 DEG C for reaction, after the reaction is finished, standing and settling are carried out, a heavy phase is discharged, a light phase is obtained, the light phase is heated to 70-80 DEG C, methanol is evaporated, and the biodiesel is obtained. The invention solves the problem of low enzymatic reaction efficiency caused by unstable oil-water interface in the existing reaction process.