31results about How to "Changing the relative volatility" patented technology

The present invention is a gaming machine for providing a display and paying out award, including a storage device which stores a game data to implement at least two games of the same type, an extended device which adds a game element to the two games and a game device which implements the two games of the same type, wherein the extended device works independently of the game device.

The invention relates to a method for refining epoxypropane and is mainly used for solving the problems of high cost of an extraction agent and poor quality of a product caused by introduction of an outside-of-system medium existing in the prior art. The method for refining epoxypropane disclosed by the invention comprises the following steps of: by virtue of an extraction agent, extracting the crude epoxypropane solution obtained by reacting hydrogen peroxide ethylbenzene with propylene and containing epoxypropane, water, acetaldehyde, propionaldehyde, methanol, acetone and C3-C7 hydrocarbon impurities and distilling. The problem is well solved by the technical scheme that ethylbenzene is adopted as the extraction agent; the method can be used in the industrial production of refining epoxypropane.

The invention relates to an epoxypropane purifying method. The problems of high extractant cost and bad product quality due to the introduction of a system outside medium in the prior art are mainly solved. The epoxypropane purifying method is characterized in that a crude epoxypropane solution containing epoxypropane, water, acetaldehyde, propionaldehyde, methanol, acetone and C5C7 hydrocarbon impurities and obtained after a reaction of cumene hydroperoxide and propylene is extracted and distilled by an extractant, wherein the extractant is isopropyl benzene. The epoxypropane purifying method well solves the problems, and can be used in the industrial production of epoxypropane purification.

The invention relates to a method for separating an acetonitrile and triethylamine azeotropic mixture by extractive distillation. An extractive distillation column and a solvent recovery tower adopt negative pressure operation; the acetonitrile and triethylamine mixture are introduced from the upper middle part of the extractive distillation column; ethylene glycol as an extractant is introduced from the upper part of the column; after the extractive distillation column, acetonitrile is extracted from the top of the extractive distillation column; the extractant and triethylamine are extracted from the bottom of the extractive distillation column and introduced from the upper middle part of the recovery tower; the triethylamine is extracted from the top of the solvent recovery tower; and the extractant ethylene glycol is extracted from the bottom of the recovery tower for recycling. The negative pressure operation adopted by the invention can reduce the heat load of the reboiler, and reduce the energy consumption for operation; the extractant ethylene glycol can significantly improve the relative volatility of acetonitrile and triethylamine; and the recovery rate is as high as 99.9%.

The invention discloses a method for preparing cyclopentene and cyclopentene of high purity by using coarse pentadiene got from petroleum cracking ethylene by-product carbon five separation. Feeding the coarse pentadiene into extraction tower in existence of polymerization inhibitor, getting mixing material of cyclopentene and cyclopentane in the tower top, extracting agent and pentadiene being in the tower still; feeding the material got in tower top to the first fractionating tower, stipping light component in tower top, getting mixing material of cyclopentene and cyclopentane in the tower still; feeding the material got from the first fractionating tower still into the second fractionating tower, getting cyclopentene of above 99% in tower top, and cyclopentane in tower still; feeding the material got from the second fractionating tower still into the third fractionating tower, steeping the heavy component in the tower still and getting the cyclopentane product in tower top. The invention employs extractive distillation method and is characterized by the high extraction accuracy, stable product quality and easy for industrial production.

The invention provides an extraction agent for extracting, rectifying and separating methanol and dimethyl carbonate azeotrope, application of the extraction agent, and a treatment method. The extraction agent is a mixed extraction agent containing ionic liquid. A system for extracting, rectifying and separating methanol and dimethyl carbonate azeotrope comprises a reaction rectifying tower, an extraction rectifying tower and an extraction agent regeneration tower which are sequentially connected, wherein the extraction rectifying tower uses the extraction agent to perform extraction and rectification. The extraction agent has the advantages that the extraction agent can effectively change the relative volatility of methanol and dimethyl carbonate azeotrope, increase the separation effectof the methanol and dimethyl carbonate azeotrope, the purity of obtained dimethyl carbonate can reach 99.8wt% or above, and the circulating loss rate of the extraction agent can be lowered to 0.01% orbelow; the extraction agent can guarantee the conversion rate of ethylene carbonate and lower the concentration of circulating methanol, and accordingly thermal load is reduced, and separation energyconsumption is reduced.

The invention discloses a distillation separation method of ethyl alcohol and tertiary butanol contained in wastewater, and belongs to the field of multi-component azeotrope separation. According to the distillation separation method of the ethyl alcohol, the tertiary butanol and water, the investment is less, energy consumption is low, emission of three wastes is avoided, and the yield is high. The distillation separation method is characterized in that the wastewater containing the ethyl alcohol, the tertiary butanol and the water is subjected to predewatering treatment, azeotropic treatment, steam stripping treatment and extractive distillation treatment, then the ethyl alcohol and the tertiary butanol are separated, and the products, namely the ethyl alcohol and the tertiary butanol are obtained; and at the azeotropic treatment stage, an entrainer is added to remove the water in surplus materials. The wastewater difficult to treat is removed to eliminate pollution to the environment, and meanwhile the products with the high additional value are recovered.

The invention relates to a separation method of propylene oxidation products epoxypropane, acrolein and acetone, and belongs to the technical field of propylene oxidation product separation. Materialsto be separated enter an epoxypropane separation tower from the middle section of a tower section for rectification separation, epoxypropane is extracted from the top of the tower, and acrolein and acetone extracted from the bottom of the tower enter an extractive distillation tower; a mixture of the to-be-separated materials acrolein and acetone and an extraction agent are divided into two pathsto enter the extractive distillation tower for extractive distillation separation, and acetone is extracted from the top of the tower; the acrolein and the extraction agent distilled from the tower kettle enter a solvent recovery tower to be subjected to rectification separation, the acrolein is extracted from the tower top, and the extraction agent is extracted from the tower kettle; and the extraction agent is recycled back to the extractive distillation tower for use. The method is scientific and reasonable in design, high-purity and high-recovery-rate separation of the materials is achieved, more economical separation is achieved on the basis of comprehensively considering process cost such as energy consumption and material consumption, and the method has a large application prospectin industry.

The invention discloses a method for purifying hydrogen fluoride in trifluoromethanesulfonyl fluoride, which comprises the following steps: firstly, pumping negative pressure in a mixing kettle, then introducing a crude trifluoromethanesulfonyl fluoride liquid, and adding an extracting agent to obtain a mixture; introducing nitrogen into the mixing kettle, transferring the mixture into a rectifying tower for rectifying, discharging heavy component impurities, and distilling out a light component trifluoromethanesulfonyl fluoride; and then introducing the evaporated light component trifluoromethanesulfonyl fluoride into an adsorption tower, adsorbing by adopting an adsorbent to obtain a refined trifluoromethanesulfonyl fluoride gas, and condensing into liquid in a refined tank. According to the invention, the extraction agent is adopted, and the action between the hydrogen fluoride and the extraction agent is utilized, so that the relative volatility between the hydrogen fluoride and the trifluoromethanesulfonyl fluoride is changed, and the vast majority of hydrogen fluoride can be removed; after the rectification process, the content of hydrogen fluoride in trifluoromethanesulfonyl fluoride is low, and the hydrogen fluoride is removed by using the adsorbent, so that the collapse of the adsorbent is avoided.