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460 results about "Process integration" patented technology

Process integration is a term in chemical engineering which has two possible meanings.

Hot forming tool of titanium alloy thin-wall part and machining method of hot forming tool

ActiveCN102500675AViscoplastic deformation facilitatesAvoid lostShaping toolsTemperature controlProcess integration
The invention provides a hot forming tool of a titanium alloy thin-wall part, comprising five parts, namely stretching equipment, a mould device, a blank, a power supply system and a temperature control system, wherein the mould device is arranged on a central worktable of the stretching equipment; the blank passes through a side wall crack of the mould device; an insulating and heat-insulation cushion layer is used for insulating the blank, a clamp of the stretching equipment, the surface of a mould and a tool of the mould; the power supply system is switched on to electrify an electrode clamping plate and generate a current in the blank; the blank is heated and the temperature of the blank is measured and controlled by the temperature control system; and after the temperature of the blank reaches a target temperature, the part is formed on the surface on the mould by the blank in an adhered manner through carrying out hot forming processes successively including stretching, covering, stretching, heat preservation and creep deformation and the like on the stretching equipment. A machining method of the hot forming tool of the titanium alloy thin-wall part comprises eight steps. According to the invention, the heating efficiency, the process integration, the material formation and the formation precision of the titanium alloy thin-wall part in manufacture are greatly improved, so that the hot forming tool of the titanium alloy thin-wall part and the machining method of the hot forming tool have a practical value and a popularization value.
Owner:BEIHANG UNIV

Method for producing petrol and diesel oil by recycling waste lubricant oil

The invention relates to a method for producing gasoline and diesel fuel through resource utilization of waste lubricant oil, which belongs to the technical field of environmental protection and energy resources. The method comprises: integrally performing the vapor phase catalytic cracking process on molecular sieve / alumina catalyst of the waste lubricant oil and the fractionation and separation process of reaction products in a reaction fractionator; injecting crude waste oil into a distillation kettle, and adopting waste residue and fuel gas generated during conversion of the waste lubricant oil for heating, wherein the temperature of the distillation kettle is controlled to be between 250 and 500 DEG C; making distilled oil gas enter the reaction fractionator which is filled with the molecular sieve / alumina catalyst for reaction and rectification when the distillation kettle is heated to 250 DEG C, wherein the ratio of the catalyst to oil is controlled to be between 1 and 20; and cutting the oil into the gasoline and the diesel fuel according to the distilled temperature, wherein fuel gas generated by reaction and residual cinder can be used for heating the distillation kettle, and generated fuel gas can be used for heating the distillation kettle. The method has the advantages of wide range of raw materials, normal-pressure reaction and separation, simple technological flow, high conversion and selectivity of products, long service life of the catalyst, comprehensive utilization of the fuel gas and the cinder, no secondary pollution, large operating flexibility of a production apparatus, and small investment.
Owner:DALIAN UNIV OF TECH

Heavy metal waste acid and wastewater resource recycling method and device

The invention discloses a heavy metal waste acid and wastewater resource recycling method and device. According to the method, acids in waste acid can be well separated through selection of anionic and cationic membranes in the electrodialysis process, heavy metal ions still remain in a waste acid solution, and the separated acid enters a concentration basin, has the acidity of over 8 percent and can be used for a sulfuric acid preparation process; the acidity of the treated waste acid is reduced to a pH value of over 3, valuable heavy metals in heavy metal-containing low-acidity waste liquor can be rapidly recovered by utilizing a hydrogen sulfide and jet process integration technology, and the recovery rate of the heavy metal ions is over 95 percent; the residual low-acidity low-salt wastewater can be recycled for a spraying system. According to the method, the heavy metal waste acid and wastewater can be treated at high efficiency, the phenomena that neutralization residues which are difficultly treated are generated and secondary pollution is caused in the process of neutralizing by adopting alkalis are avoided, high-quality sulfuric acid and heavy metals can be recovered, and more important, the adopted equipment and device are simple, convenient to operate and good in treatment effect.
Owner:CENT SOUTH UNIV +1
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