36 results about "Glycerol product" patented technology

The present invention discloses an integration technics with anti-penetration and distillation to recycle a glycerin in low-concentration sweet water. The steps for the present invention are as follows: (1) the pH value for the low-concentration sweet water is adjusted to litmusless by using of a neutralization agent, and then a flocculating agent is added into the sweet water; after being deposited, the mixture is to be filtered; (2) the filter liquid is condensed into a condensing liquid through an anti-penetration film component in the pressure of 1-8MPa; the condensing liquid is vaporized with multi-aspects to get rid of water and part of salt; and then a coarse glycerin; (3) the coarse glycerin is decompressed, distilled, ion-exchanged with resin refining in a mixing bed, and decolored with an active carbon to create the glycerin product with the purity more than 98.5 percent. The present invention can be used in medicine industry and foodstuff industry and so on. The technics has the advantages of low resource consumption, large treatment quantity and low cost and so on. The present invention can not only bring much better economical benefit by changing uselessness into usefulness, but also has greater environmental and social benefit.

A method for making fatty acid esters by reacting triglycerides with an excess of alcohol in a pressurized environment, where the unreacted alcohol component is separated from the reaction product by a flash purification techniques. In this manner, the pressure of the product stream is significantly reduced to vaporize unreacted alcohol, which is then condensed for later reuse. The invention provides a cost-effective and convenient mechanism to simultaneously recycle excess alcohol and to purify ester product and / or glycerol product streams.

The invention discloses a treatment method of glycerol as a by-product of biodiesel. The treatment method includes the following steps: 1) acidifying the glycerol as the a by-product of the biodiesel, allowing the by-product glycerol to stand for layering, and obtaining a subnatant; 2) adding organic alcohol to the subnatant, uniformly mixing the liquid, and performing solid-liquid separation to obtain a glycerol clear liquid; 3) adding water to the glycerol clear liquid to dilute the glycerol clear liquid, performing electrodialysis desalination, and then rectifying the liquid and collecting a bottom residue which is the product. The glycerol product can be used for microorganism fermentation. The treatment method is simple in process and is easy to achieve industrial application.

The invention discloses a treatment method for biodiesel by-product glycerol. The method includes the following contents: (1) acidifying the biodiesel by-product glycerin, standing for stratification, and taking the lower clear liquid; (2) adding organic alcohol to the lower clear liquid obtained in step (1), mixing evenly, and solidifying After liquid separation, glycerin clear liquid is obtained; (3) The glycerin clear liquid obtained in step (2) is added for dilution, electrodialysis is performed for desalination, and then rectification, and the residue is collected as the product. The glycerin product obtained by the method can be used for microbial fermentation, has a simple process and is easy to realize industrial application.

The invention discloses an improved glycerol production technology. Grease is subjected to pyrohydrolysis to obtain a crude glycerol solution and fatty acid; the improved glycerol production technology is characterized in that crude glycerol solution purification comprises the following steps of 1 pretreatment, wherein an adsorbing agent is put into the crude glycerol solution, and reacting under stirring is performed to remove grease impurities in the crude glycerol solution; 2 resin adsorption, wherein filtrate obtained in the step 1 is adsorbed through a macroporous resin adsorption column, and a pure glycerol solution is obtained; 3 glycerol concentration, wherein a glycerol solution obtained in the step 2 is subjected to reduced pressure distillation and concentration and high-temperature evaporation or thin-film evaporation to obtain a glycerol product, and condensate is directly drained or drained after being subjected to biochemical treatment. Eluant obtained after the waste adsorbing agent and the macroporous adsorption resin are regenerated flows back to a hydrolysis kettle to continuously produce glycerol and fatty acid through pyrohydrolysis. According to the improved glycerol production technology, by adopting the macroporous adsorption resin to purify and prepare glycerol, not only is the problem that in a traditional technology, residual calcium blocks pipeline equipment due to the fact that CaO is adopted to neutralize and purify glycerol avoided, but also three wastes generated in a reclamation recycling technology can achieve full utilization of resources.

A green treatment process for dephenolization of chlorophenyl glycerol, the crude product of chlorophenyl glycerol is dissolved in a hot alkaline solution with a mass of 3 to 5 times, the temperature is 60 to 80 DEG C, the stirring speed is 100 to 300 r / min, and the mixture is stirred with The liquid level height ratio is 0.3 to 1, and the cooling time is 2 to 5 hours. When the temperature of the material drops to room temperature, the product is precipitated. The constant precipitation temperature is 25 ℃ for 1 to 3 hours, and it is allowed to stand for 0.5 hours. Pressure vacuum filtration, using 1 to 3 times the amount of filter cake to deionize at room temperature, so that the treatment is completed, the phenolic content of the product is below 100ppm, the product is processed again according to the above steps, the phenolic content of the product can be achieved. The loss rate does not exceed 3%. The invention simplifies the treatment process for removing phenol from the chlorophenyl glycerol product, improves the efficiency of removing phenol, is green and safe, the waste liquid is easy to treat, reduces the treatment cost, and creates conditions for its industrial application. The process realizes high dephenolization efficiency, green safety, no flammable, non-toxic solvent, low energy consumption, less waste liquid, and easy disposal.

A method for purifying chlorophenyl glycerol, comprising the following steps: after the reaction is completed, a crude product of chlorophenyl glycerol is obtained, under the protection of nitrogen, heating with an electric heating mantle, a distillation flask, and a Y-shaped distillation head with a glass packing ring under a vacuum degree of 0.095 Mpa or more , collect 216-218 ℃ fraction products, reuse the front fraction, and treat the residue harmlessly. The distillate product is dissolved in a certain amount of lye solution, crystallized by cooling, filtered, and the amount of the mother liquor is about 3-4 times that of the product, and the filter cake is heated and dried in a vacuum step to obtain a product with a content of more than 99.8%. The content of p-chlorophenol is There is no test result, and the product yield is 70%. The process of the invention simplifies the refining process of the chlorophenyl glycerol product, shortens the time, improves the efficiency, reduces the amount of waste liquid, the waste liquid is easy to handle, reduces the processing cost, is green and safe, and has little environmental harm, and is created for its industrial application. condition.

The invention discloses a lever-type detection and transfer device for glycerin products. It includes a seat for containing glycerin products, a first guide wheel for guiding the seat to rotate, a second guide wheel for guiding the seat to move, and a driving part for driving the second guide wheel , the first guide wheel is rotatably connected to the bottom of the seat, the drive part is movably connected to the seat, the second guide wheel is rotatably connected to the bottom of the drive part, and the drive part has A first position for driving the base to move and a second position for the base to rotate. In the first position, the driving part drives the second guide wheel to touch the ground. The first The guide wheel is suspended in the air, and in the second position, the driving part drives the second guide wheel to be suspended in the air, and the first guide wheel touches the ground. The invention can solve the very difficult problem in carrying operation.

The invention discloses a preparation method of pale rosin glyceryl ester. The preparation method comprises the following steps: under the protection of inert gas, heating to dissolve rosin, adding glycerol, a catalyst and a water-carrying agent, adding a C4+ olefin solution into the reaction kettle, stirring uniformly, and gradually heating to react; and stopping introducing the inert gas, filtering to remove the catalyst, removing the impurity liquid, and collecting the product. The rosin glycerol product has the advantages of light color, high softening point and favorable crystallization resistance.

The present invention discloses an integration technics with anti-penetration and distillation to recycle a glycerin in low-concentration sweet water. The steps for the present invention are as follows: (1) the pH value for the low-concentration sweet water is adjusted to litmusless by using of a neutralization agent, and then a flocculating agent is added into the sweet water; after being deposited, the mixture is to be filtered; (2) the filter liquid is condensed into a condensing liquid through an anti-penetration film component in the pressure of 1-8MPa; the condensing liquid is vaporized with multi-aspects to get rid of water and part of salt; and then a coarse glycerin; (3) the coarse glycerin is decompressed, distilled, ion-exchanged with resin refining in a mixing bed, and decolored with an active carbon to create the glycerin product with the purity more than 98.5 percent. The present invention can be used in medicine industry and foodstuff industry and so on. The technics has the advantages of low resource consumption, large treatment quantity and low cost and so on. The present invention can not only bring much better economical benefit by changing uselessness into usefulness, but also has greater environmental and social benefit.

A method for purifying glycerin from the by-products of biodiesel production. First, dilute with methanol, remove part of the inorganic salts, add alkali to neutralize, and then add glycerin insoluble or slightly soluble but miscible with organic acids and other organic impurities. Organic solvents, extraction, removal of organic acids, some pigments and other organic impurities; followed by distillation to remove methanol; diluted with water, followed by purification by acidic cation exchange resin and basic anion exchange resin, and then evaporated, dehydrated, and dehydrated Light components, to obtain high-purity glycerin products. The method of the present invention adopts inorganic acid pretreatment before ion exchange, while neutralizing excess alkali in the feed liquid and removing part of the organic matter, it can also effectively remove the salt therein; the organic solvent extracts the organic acid in the crude glycerin , some pigments and other organic impurities; the above treatments can effectively reduce the burden of desalination in the subsequent ion exchange process and reduce the pollution to the resin. The purity of the glycerin purified by the invention is above 99.5%, the loss of glycerin is small, and the purification yield can reach above 95%.

The invention provides a method for determining glycidol in an glycerine enema raw material. The glycidol in the glycerine enema raw material is determined mainly through a gas chromatography method; methanol is adopted as a solvent for a sample; and therefore, safety and high applicability can be realized; a sample treatment method is convenient and rapid; an analysis method is simple, convenient and rapid; the separation capacity is high; a quantitative result is accurate; the recovery rate is high; the detection limit is 0.32 ng which is equivalent to 0.00008% of test concentration; the quantification limit is 0.79 ng which is equivalent to 0.00020% of test concentration; the detection requirement that the limit of glycidol in ICH M7 is 0.002% is met; a glycerine enema raw material quality control standard is improved; and the safety of glycerine enema products (containing glycerol) is improved.