32results about How to "Guaranteed distillation effect" patented technology

The invention relates to a calcium metal production process, comprising: S1, calcium chloride mother liquor prepared by adding calcium chloride mother liquor after adding calcium carbide mud slurry and hydrochloric acid waste liquid in the process of producing polyvinyl chloride by chlor-alkali acetylene method as raw materials; The mother liquor is dried and granulated to become anhydrous calcium chloride; S3, adding the anhydrous calcium chloride to potassium chloride and electrolytic copper for electrolysis in an electrolytic cell to obtain copper-calcium alloy and chlorine gas, and the chlorine gas is returned to step S1 to be mixed with The calcium carbide mud slurry is reacted to generate calcium chloride mother liquor; S4, adding the obtained copper-calcium alloy to a vacuum distillation furnace for distillation under heat preservation, and purifying metallic calcium under the protection of an inert gas. The invention relates to a calcium metal production process using waste calcium carbide mud slurry in the chlor-alkali industry as a raw material to produce calcium metal, which saves energy and reduces consumption, and the calcium metal has higher purity.

The invention belongs to the technical field of solvent recycling, and more specifically discloses a waste solvent recycling device. The waste solvent recycling device comprises a raw material feedingunit, a distillation unit, and a condensation unit; the distillation unit comprises a pedestal, a rotating cylinder, a spiral barrel, and a differential mechanism; the side wall of the rotating cylinder and the side wall of the spiral barrel are provided with sandwich layers; the spiral barrel is rotatingly arranged in the rotating cylinder; the sandwich layer on one end of the rotating cylinderis communicated with the sandwich layer of the spiral barrel; the rotating cylinder is rotatingly arranged on the pedestal; one end of the rotating cylinder is designed to be tapered, and the other end is designed to be cylindrical; the external wall of the spiral barrel is provided with spiral blades; one end of the spiral barrel is connected with a feed pipe; a doctor blade is arranged in the spiral barrel in a sliding manner; a pressure valve is arranged on the doctor blade; the spiral barrel and the doctor blade are connected via a spring; the spiral barrel is provided with a discharge hole; one end of the rotating cylinder is provided with a solid output pipe, and the other end is provided with a gas liquid outlet pipe. The waste solvent recycling device is used for recycling waste solvent; in distillation treatment, adhesion of colloid materials onto the internal wall of the distillation unit is avoided, and influences on normal operation of distillation are avoided.

The invention discloses a liquid distilling and cooling all-in-one machine. The liquid distilling and cooling all-in-one machine comprises a plurality of coolers sequentially arranged from top to bottom. Heat exchange pipes are arranged in the coolers. The positions, close to the tops, of the side faces of the coolers are provided with cooling liquid inlet pipes and liquid inlet pipes connected with the heat exchange pipes respectively. The positions, close to the bottoms, of the side faces of the coolers are provided with cooling liquid outlet pipes and liquid outlet pipes respectively. The liquid outlet pipes of the previous coolers are connected with the liquid inlet pipes of the next coolers, and the cooling liquid outlet pipes of the previous coolers are connected with the cooling liquid inlet pipes of the next coolers. Water inlet pipes are arranged in the middles of the side faces of the coolers. The liquid distilling and cooling all-in-one machine can carry out distillation conveniently, and cooling efficiency can be improved.

The invention belongs to the technical field of solvent recycling, and particularly discloses a method for recycling an automobile industry waste solvent. The method comprises the following steps: (1)simple distillation: distilling the waste solvent by adopting a distilling apparatus, and obtaining liquid comprising xylene and n-butyl acetate; (2) magnetization: pumping the liquid obtained in step (1) into a closed magnetizing tube to be circularly magnetized; (3) extraction rectification: extracting the liquid treated in the step (2) by using N-methyl pyrrolidone as an extraction agent by virtue of an extraction rectification tower with 40 to 80 theoretical tower plates, and obtaining an xylene solution and a residual solution; and (4) intermittent rectification: treating the residual solution in an intermittent rectification manner, wherein the rectification parameters are set as follows: the consumption of cooling circulating water: 48 to 60 m<3> / h; the steam pressure: 0.5 to 0.7 MPa; the steam consumption: 0.3 to 0.5 t / h; and power load of the apparatus: 45 to 50 KW. By adopting the method, the waste solvent can be distilled for multiple times, and the waste solvent can be effectively recycled.

The present invention discloses a compact double-pipe type filled tower. It possesses the successively-connected fractionation tower body lower internal core and fractionation tower body upper internal core, on the fractionation tower body upper internal core a condenser is set, the exterior of said fractionation tower body upper internal core and condenser is equipped with a fractionation tower body external cover, on the side surface of said fractionation tower body external cover are fixed a condenser outlet tube and a condenser inlet tube which are respectively close to lower end and upper end of said fractionation tower body upper internal core, the upper end of said fractionation tower body external cover is equipped with gas outlet tube, its lower end is equipped with a gas-liquid separator, and the cavity enclosed with the fractionation tower body upper internal core and lower internal core, external cover of fractionation tower body and top end of gas-liquid separator is filled with filling material.

The invention relates to a plant essential oil distillation method, which comprises a base plate, a distillation device and a cooling device. The base plate has a rectangular structure, and installation holes are evenly arranged on the base plate, a distillation device is installed in the middle of the upper end of the base plate, and a distillation device is installed on the upper end of the distillation device. cooling unit. The present invention can solve the problem that the existing equipment cannot turn over the plant raw materials when distilling the plant essential oils. The raw materials are usually piled up together, and it is difficult for the hot steam to completely contact the raw materials, resulting in the essential oil distillation effect in the raw materials. Poor, low extraction efficiency, and the existing equipment cannot quickly cool the hot steam when condensing the plant essential oil, which makes the condensation effect of the mixed steam poor, resulting in the essential oil being easily lost with the water vapor, which is easy to cause the plant essential oil Problems such as waste occur.

The invention discloses a preparation method for alkyl alcohol amine. The preparation method comprises the following steps: (1) feeding alkyl amine and a reaction promoter alkanolamine into a reaction kettle for stirring and mixing; (2) adding epoxy alkane for synthesis, wherein the feeding molar ratio of epoxy alkane for synthesis to alkyl amine is higher than the theoretical reaction molar ratio; (3) after the feeding is finished, carrying out heating and pressurization; (4) carrying out heat preservation conversion rate to obtain a crude product; (5) conducting continuous distillation on the crude product to separate out alkyl alcohol amine. During the preparation, alkanolamine is primary alkanolamine or secondary alkanolamine. Compared with the prior art, the preparation method provided by the invention adopts the technical scheme that alkanolamine is taken as the reaction promoter instead of water as a catalyst, so that the conversion rate of alkyl amine can reach 99.0% in general, the highest conversion rate can reach 99.9%, and the highest recovery rate of alkyl alcohol amine can reach 99.8%. Therefore, the preparation method provided by the invention has the advantages of being high in raw material conversion rate and recovery rate.

The invention discloses a system for preparing isopropanol through propylene hydration reaction. The reactor communicates with a gas-liquid separator through a pipeline A, the gas-liquid separator communicates with a dehydration tower through a pipeline B, and the gas-liquid separator communicates with a propylene supply through a pipeline C. The air pipe is connected, the dehydration tower is connected with the purification tower through the pipeline D, the dehydration tower is connected with the pure water supply pipe through the pipeline E, the purification tower is connected with the heat exchanger through the pipeline F, and the pipeline G of the heat exchanger is connected with the pipeline D through the pipeline H, The purification tower communicates with the extraction tank through a pipeline I, the extraction tank is connected with a pipeline J, the extraction tank is connected with a pipeline K, and the pipeline K is connected with the purification tower, and each pipeline is provided with its own valve. It can be seen from the above structure that in the system for preparing isopropanol by propylene hydration reaction of the present invention, the mixed gas after the reaction is condensed by a condenser, the propylene in the mixed gas is separated, and the pure water in the condensed mixture is separated by a dehydration tower, and finally The isopropanol in the mixture is purified and collected through a purification tower.