91results about How to "Easy to distill" patented technology

An energy-efficient extractive distillation process for producing anhydrous ethanol from aqueous/ethanol feeds containing any range of ethanol employs an extractive distillation column (EDC) that operates under no or greatly reduced liquid reflux conditions. The EDC can be incorporated into an integrated process for producing anhydrous ethanol used for gasoline blending from fermentation broth. By using a high-boiling extractive distillation solvent, no solvent is entrained by the vapor phase to the EDC overhead stream, even under no liquid reflux conditions. The energy requirement and severity of the EDC can be further improved by limiting ethanol recovery in the EDC. In this partial ethanol recovery design, ethanol which remains in the aqueous stream from the EDC is recovered in a post-distillation column or the aqueous stream is recycled to a front-end pre-distillation column where the ethanol is readily recovered since the VLE curve for ethanol/water is extremely favorable for distillation.

The present invention relates to improved methods for the production, isolation and purification of epothilone B. These methods include, for example, a fermentation process for the production of epothilone B, isolation via adsorption onto a resin, and subsequent purification.

The invention discloses a vacuum bulking manufacturing technique of traditional Chinese medicine, which is characterized by the following: adopting vacuum bulking technique to control and select the shape, size and moisture content of the traditional Chinese medicine to generate many pores at the cell wall of the traditional Chinese medicine; lixiviating and distilling the cell content to improve the extracting quantity of effective component or ingredient; fitting for extracting volatile oil component in the traditional Chinese medicine; opening a new path for drug value.

This invention relates to a method for extracting nervonic acid from Acer truncatum oil by molecular distillation. The method solves the problems of complex procedures, easy emulsification, high product acid value and low product purity faced by present technique. The method comprises: (1) preparing Acer truncatum oil; (2) performing deacidification treatment on Acer truncatum oil, removing oil foot, washing with water, and dehydrating; (3) mixing Acer truncatum oil, absolute ethanol and alkaline catalyst, esterifying, washing with water, and separating to obtain ethyl nervonate; (4) performing molecular distillation in different vacuum conditions and temperatures, and collecting the product.

The invention discloses a method for recovering sulfur from atmospheric-pressure oxygen-rich leached residues of lead-zinc ores, and particularly relates to the recovery of sulfur in lead-zinc ore leached residues through vacuum distillation, belonging to the field of reclamation and reuse of solid waste resources. The method comprises the following steps of: placing atmospheric-pressure oxygen-rich leached residues, subjected to drying, milling and screening pretreatment, of lead-zinc ores into a vacuum distillation furnace, heating the residues to 200-400 DEG C, and controlling the pressure of the inside of the furnace to 600-10000 Pa, so that sulfur in the leached residues is sublimated and volatilized; pumping sulfur-containing vapor out of the distillation furnace by a vacuum pump; and cooling the sulfur-containing vapor so as to obtain a sulfur product. After the distillation is completed and the sulfur is completely volatilized, high-boiling-point residues are discharged out of the distillation furnace in a solid powder form. In the whole process, the furnace is internally sealed, thereby avoiding the oxidation and environmental pollution of elemental sulfur. The method is simple in technological process and equipment, high in sulfur recovery rate and product quality, low in energy consumption, strong in adaptability to raw materials and pollution-free, so that the method disclosed by the invention is an economic and efficient sulfur extraction method and can realize the zero discharge of waste smelting residues in a lead-zinc wet process, thus the method has broad application prospects.

The invention relates to a catalyst and a method for preparing ethanol by hydrogenating acetic ester and mainly solves the problems that in the prior art, the ratio of hydrogen to ester is too high, the conversion rate of raw materials is low and the selectivity of ethanol is poor. The catalyst is composed of the following components in parts by weight: (a) 5-80 part of metallic copper or copper oxide, (b) 0.05-60 parts of catalyst promoter and (c) 5-90 parts of silicon dioxide carrier, wherein the catalyst promoter is selected from at least one of transitional metal or oxide of the transitional metal; the specific area of the catalyst is 150-500 m<2> per gram; the total pore volume is 0.1-3.0 ml/gram; the pore volume of the diameter less than 20nm is 40-90% of the total pore volume; the pore volume of the diameter less than 50nm and larger than 20nm is 5-75% of the total pore volume; and the pore volume of the diameter larger than 50nm is 5-75% of the total pore volume. By adopting the technical scheme, the problems are well solved; and the catalyst can be used for industrial production of ethanol by hydrogenating acetic ester.

The invention relates to a sponge titanium reduction distillation reactor which is formed by connecting a tank body and a large cover through a flange rubber cushion and a bolt set, wherein the tank body comprises a bottom plate, a sieve plate, a magnesium chloride discharge casing, a tank body flange and a waist-type cylinder; the large cover comprises a magnesium chloride discharge pipe, a thermal insulation layer, an internal heating device, a large cover upper flange, a large cover lower flange, a central pipe, a charging casing 1, a short cylinder and a charging casing 2; the integral reactor is in a stereoscopic waist circular structure; and the bottom plate is a sloping plate positioned on the lowest part of the whole reactor, and is matched with the waist-type cylinder to form an open stereoscopic waist-type tank body. The integral effective width of the reactor is 1.2-1.5 meters, the height is 1.5-2.5 times of the width, and the length is 2-3 times of the width. The reactor for producing sponge titanium can change the sponge titanium structure, solve the problem of compactness, greatly enhance the overall charging rate, simplify the distillation process and greatly shorten the period.

The invention discloses a production method of synchronously extracting tea-seed oil and tea saponin from tea seed cakes. The production method comprises the following steps: multi-stage impulse countercurrent extraction: feeding the tea seed cakes to an extractor and carrying out N-stage spraying and soaking extraction by using an extracting agent containing tea-seed oil and tea saponin to obtain a mixed solution and a mixed solid, wherein the mass fraction of the tea-seed oil in the extracting agent used in the Mth-stage spraying and soaking extraction is higher than that of tea-seed oil in the extracting agent used in the (M-1)th-stage spraying and soaking extraction, and M is greater than or equal to 2 but less than or equal to N; skimming and separating: filtering and skimming the mixed solution to obtain the first mixed solution containing tea-seed oil and a second mixed solution containing saponin; extracting the tea-seed oil: evaporating and steam-stripping the first mixed solution to obtain the tea-seed oil; extracting the saponin: evaporating, distilling and drying the second mixed solution to obtain tea saponin crude powder. The production method disclosed by the invention is suitable for industrial production on a large scale, solves the problem that the yield of tea saponin is low and the input of the extracting agent is great, and is energy-saving and consumption-reducing, and particularly free of environmental pollution.

The invention discloses a distilling production method for sandalwood essential oil.The method comprises the specific steps that 1, a sandalwood plant raw material is smashed into fragments with the thickness of 1 millimeter to 6 millimeters, and the fragments are placed in a distilling cabinet; 2, steam generated by a steam boiler is led into the distilling cabinet, and the sandalwood fragments are distilled; 3, tail gas of the steam boiler is processed through a first-level dust remover and a second-level dust remover before being discharged out of a chimney; 4, the steam discharged from the distilling cabinet passes through a first-level condenser and a second-level condenser before entering a receiving tank and an excessive receiving tank, and distillate is obtained; 5, the pressure in the receiving tank is kept between 0.01 Mpa and 0.3 Mpa; 6, the distillate in the excessive receiving tank passes through a third-level condenser before being discharged into a fractionation barrel; 7, the distillate is discharged out of an essential oil outlet of the fractionation barrel, and then the sandalwood essential oil is obtained.The method is simple, the oil is discharged quickly, time is short, the obtained sandalwood essential oil is high in quality, and adopted equipment is easy to operate.

The invention discloses a solar seawater desalination system, comprising a solar heating device, a steam-water separator, a condensation device, a water supplementing device and a warming and heat-storing device, wherein a header is vertically arranged, a water supplementing outlet of the water supplementing device is communicated with a water inlet of the header, the steam-water separator is arranged between and connected with an upper end opening of the header and the condensation device, a steam separating opening of the steam-water separator is communicated with a steam inlet of the condensation device, and a water supplementing inlet of the water supplementing device is connected with the warming and heat-storing device. The solar seawater desalination system provided by the invention is used for solar seawater desalination and has the characteristics of a fast water circulation speed, rapid heat transfer, long duration of continuous distillation, little influence by weather, good adaptability, etc. Moreover, in the operation process of the system, integral power consumption and energy dissipation are small, operation cost is low, latent heat of cooling of steam is effectively used, and a high utilization rate of solar energy is realized.

The invention relates to a preparation method of solid vanadyl sulfate. The preparation method comprises the following steps: roasting and leaching steelmaking converter vanadium slag to obtain a vanadium-containing solution; carrying out targeted iron removal and vanadium valence conversion, carrying out impurity removal and purification by using a solvent extraction method, and carrying out mixed acid back extraction to obtain a high-purity vanadyl sulfate solution; and finally, carrying out direct negative pressure distillation crystallization to obtain the solid vanadyl sulfate. The methodis simple in technological process and low in cost, and large-scale industrial preparation can be achieved. A tetravalent vanadium solution is purified by adopting a solvent extraction method for impurity removal and purification, and impurity elements such as iron, manganese, chromium, zinc, calcium and magnesium can be effectively removed by controlling proper technical parameter conditions.

The present invention discloses an adamantyl ester monomer composition characterized by containing at least an adamantyl ester monomer having at least one polymerizable unsaturated bond in the molecule, and a compound represented by the following general formula (1):

(in the formula, R¹ is an alkyl group of 1 to 5 carbon atoms, R² is an alkyl group of 1 to 5 carbon atoms, R³ is a hydrogen atom or an alkyl group of 1 to 5 carbon atoms, and R⁴ is a hydrogen atom or a methyl group). The composition has high storage stability and, by subjecting it to distillation, an adamantyl ester monomer of high purity can be obtained easily.

The invention relates to the technical field of purification and distillation equipment, in particular to a distillation device based on a sedimentation impurity removal mechanism. The device comprises a distillation structure used for heating and condensing an object to remove impurities of the object, and the distillation structure is connected with a settling structure used for settling the impurities of the object; the distillation structure comprises a feeding body for controlling an object to enter and exit, the bottom of the feeding body is connected with a storage body for temporarily storing the object, the storage body is internally connected with a connecting pipe, the connecting pipe is connected with a distillation body for distillation, and the distillation body is connected with a condensation body for condensing a gas object and a sedimentation pipe; the settling structure comprises a pretreatment body for pretreating the solid-liquid mixture, and the pretreatment body is connected with a sedimentation treatment body for carrying out sedimentation treatment on the solid-liquid mixture. The invention mainly provides the distillation device for removing impurities in a sedimentation mode.

Apparatus and process for removal of volatile degradation products from the absorbent circuit of a CO2 separation process are provided. The CO2 separation process may use the absorbent circuit in an absorption process and a desorption process. Condensate is withdrawn from a condensation process connected downstream of the desorption process, and purified to substantially free such condensate of degradation products. The purified condensate is recycled back to the absorbent circuit.

The invention discloses an extraction device for medicinal material distillation, which is beneficial to ensuring full utilization. The device comprises a crushing barrel, a first motor, a second motor, a heating plate, a refrigerator and a water pump, wherein the first motor is arranged at the top of the right side of the crushing barrel; a material accumulation hopper is connected to the lower part of the crushing barrel; a movable door is arranged on the right side of a herbal medicine frame, a supporting rod is arranged at the top of a distillation barrel, a ceramic heat preservation layeris arranged on the outer side of the distillation barrel, a condensation pipe is arranged in the condensation barrel, a protective shell is connected to the outer side of the bottom of the material accumulation hopper, and supports are connected to the lower portions of the crushing barrel, the distillation barrel and the condensation barrel. According to the extraction device for medicinal material distillation beneficial to ensuring full utilization, medicinal materials are conveniently crushed and collected, heating distillation treatment of the medicinal materials is facilitated, used medicinal material residues are conveniently discharged, new medicinal materials are conveniently added, distillation is facilitated, distilled heat can be recycled, and energy is conveniently saved.

The invention discloses a waste organic solvent recycling device which comprises a solvent recycling device, a pressurizing atomization device, a power system and an RTO, wherein a solvent liquid outlet end of the solvent recycling device is communicated with the pressurizing atomization device, and the pressurizing atomization device is communicated with a combustion chamber of the RTO through the power system. By the adoption of the waste organic solvent recycling device, a regenerated solvent is used as fuel to replace natural gas after a series of treatments are carried out on the regenerated solvent, so that the operation cost is greatly reduced, the regenerated solvent is recycled, the utilization rate of the regenerated solvent is improved, and the effects of energy conservation andemission reduction are achieved.

Belonging to the field of fine chemicals, the invention discloses a production method of 4-hydroxy-2-butanone, and solves the problem of low yield of existing synthetic methods. The method provided bythe invention includes the steps of: adding 1, 3-butanediol, a catalyst, an assistant, water and a water-carrying agent into a reaction kettle, and performing heating to 55-60DEGC; adding hydrogen peroxide dropwise into the mixed solution, and conducting reduced pressure distillation of water; stopping adding hydrogen peroxide, and further performing stirring for 1-1.5h to distill the water-carrying agent out; controlling the temperature of the system not higher than 60DEGC, and conducting reduced pressure rectification to obtain the final product 4-hydroxy-2-butanone. By adding the assistant, 1, 3-butanediol can better participate in the reaction, and the conversion rate can be improved. The chemical reaction carried out in the invention is carried out under a negative pressure condition, and the temperature is controlled not higher than 60DEG C, thus avoiding the generation of methyl vinyl ketone; and in a negative pressure system, the reaction can be fully carried out under a low temperature condition, the product is easier to distill, and impurities are not easily produced.