41results about How to "Increase the reflux ratio" patented technology

The invention relates to a method for continuously separating alpha-pinene and beta-pinene from turpentine. The method comprises the following steps: raw materials are subjected to a preheating treatment; a packed tower vacuum rectification process is carried out; alpha-pinene is collected with a reflux ratio of 8:1-10:1; a middle fraction is slowly collected with a reflux ratio of 20:1-30:1; beta-pinene is collected with a reflux ratio of 8:1-15:1; and when distillation is finished, while the rectification tower is not cooled and the vacuum state is not relieved, discharge is realized through the pressure difference between a tower kettle and a residual liquid tank. Therefore, intermittent distillation continuous operation is realized. With the method provided by the invention, the content of obtained alpha-pinene can be 98%, and the content of obtained beta-pinene can be 95%.

A method and apparatus for treating sewage features that its bioreacting apparatus uses active sludge-biologic filter pool internal reflux, and the aeration and the non-aeration are flexibly applied to the active sludge segment and biologic filter pool segment for optimizing the treating effect.

The invention discloses a method for optimizing the operation of a solvent dehydration system during the production process of aromatic acid. The aromatic hydrocarbon corresponding to the aromatic acid to be prepared is taken as the azeotropic agent; then the aromatic hydrocarbon is subjected to azeotropic distillation in a solvent dehydration tower; acetic acid can be extracted from the tower bottoms; the condensed liquid from the tower top is separated, the oil phase and water phase go through a azeotropic agent refining tower and a methyl acetate recycling tower to separate methyl acetate and then flow back to the solvent dehydration tower; the top part of the solvent dehydration tower is provided with an oil phase reflux device, the upper part and the lower part of the solvent dehydration tower are both provided with a water phase reflux device; through adjusting the water phase reflux amount of the water phase reflux device arranged on the upper part of the solvent dehydration tower, the oil phase reflux amount can be reduced, thus the energy consumption of the solvent dehydration tower is reduced; the water phase reflux device arranged on the lower part of the solvent dehydration tower can bring the azeotropic agent in the lower part of the solvent dehydration tower to the upper part, and thus the phenomenon that the azeotropic agent is mixed with the condensed acetic acid in the tower kettle of the solvent dehydration tower is avoided, so the content of acetic acid that is returned to the oxidation system is stable.

The invention relates to a mild combustion chamber of a gas turbine. The mild combustion chamber comprises a premixed mild combustor, a first guide shell, a second guide shell, a secondary combustionchamber and a mild combustor on duty. Through array-type distribution of the mild combustors, the space of the mild combustion chamber of the gas turbine is fully utilized, the flue gas reflux ratio is increased, a partial mild combustion condition is easier to establish, and full-zone mild combustion of a combustion zone is realized; by means of radial staging, the requirement of regulation within a wide operating condition range is met; and as the mild combustor on duty, the premixed mild combustor and micro-mixing nozzles are different in axial position, axial staging of combustion is realized; the load regulation requirement is met; the uniformity of outlet temperature of the mild combustion chamber of the gas turbine is increased; pressure loss is reduced; full-zone high flue gas reflux ratio of mild combustion is realized; and the requirements of low emission within the wide operating condition range and efficient and stable operation are met.