79results about How to "Increase product yield" patented technology

The invention is a producing method of anti-gas yeilding additive of transformer oil. At first, it uses petroleum distillation, boiling point 250-500 deg.C, as raw material, adopts any one or more of the hydrogenation catalyzer; Co-Mo, Ni-Mo, W-Ni and Mo-Co-Ni to make hydrogenation process; secondly, and at constant pressure distils the produced oil after the hydrogenation process to get the distillation, boiling point 280-360 deg.C, so as to get the additive; the usage: adding the additive to common transformer oil, concocting to get super-high transformer oil.

The invention discloses a method for preparing monopotassium phosphate through feed-grade calcium hydrophosphate. The method comprises steps of carrying out conversion reaction on the raw material feed-grade calcium hydrophosphate and phosphoric acid solution, then carrying out extraction reaction with sulfuric acid, filtering so as to obtain filtrate, regulating pH of the filtrate to be 7.1-8.5 with industrial-grade phosphoric acid, then adding potassium carbonate and potassium hydroxide solution into the filtrate for neutralizing, after finishing the reaction, regulating pH to be 8.5-9.5, filtering so as to obtain filtrate, continuously regulating pH of the filtrate to be 4-4.5 through industrial-grade phosphoric acid, regulating the density of the reaction liquor, and after completely dissolving out the crystal, centrifugally drying so as to obtain monopotassium phosphate. The method is simple; the product can meet the requirement of first-grade goods of national industrial standard, the content of monopotassium phosphate is over 98%, and the yield of the product monopotassium phosphate is high, so that the method is applicable to large-scale industrial application; the method lowers the cost of the product by adopting low-cost feed-grade calcium hydrophosphate and returning the dehydration mother liquor back to a reaction kettle for cycle use, and avoids strong corrosion to equipment in the technological process.

A method for manufacturing a capacitor of a semiconductor device includes forming a lower metal layer over a substrate, forming a dielectric layer over the lower metal layer, forming an upper metal layer over the dielectric layer, forming an upper electrode and a dielectric layer pattern by performing a reactive ion etching process with respect to the upper metal layer using the dielectric layer as an etch stop layer, and exposing a top surface of the lower metal layer, and performing a chemical down-stream etch (CDE) process to remove a by-product of a sidewall of the upper electrode.

A multi-functional upper expanding device for producing antimony trioxide comprises an inlet pipe, an abdomen pipe, and an air exhausting pipe, wherein the inlet pipe, the abdomen pipe and the air exhausting pipe are orderly connected and communicate with each other; the inner diameter of the abdomen pipe is larger than those of the inlet pipe and the air exhausting pipe; the inlet end of the inlet pipe is arranged on the outlet end of the antimony trioxide reaction chamber, and the outlet end of the air exhausting pipe is connected to the inlet end of the antimony trioxide crystallization device. The multi-functional upper expanding device can adjust the particle size of antimony trioxide product at will, effectively controls the antimony trioxide product quality, timely recycles the agglomerated oxides generated during the antimony trioxide production process, and improves economic and technical indexes such as product yield, and the like.

Method and system for controlling the density to a predetermined level of an edible aerated foodstuff product during the preparation thereof A density measurement is acquired on the aerated product at a location sufficiently downstream of a shearing unit used to form the aerated material such that the product is in an equilibrated state. Consequently an adjustment can be made in the introduction rate of aeration gas at a location upstream of the shearing unit which is calculated to reduce any difference between the predetermined and measured product densities in a precise and reliable manner. Also, injection gas of reduced solubility may be used so that product density can reach equilibrium sooner. Upstream disturbances in the density of a formulation starter material also may be monitored and countered by adjustments made in the gas flow rate to assist in maintaining a desired product density.

The invention discloses a method for preparing monopotassium phosphate through feed-grade calcium hydrophosphate. The method comprises steps of carrying out conversion reaction on the raw material feed-grade calcium hydrophosphate and phosphoric acid solution, then carrying out extraction reaction with sulfuric acid, filtering so as to obtain filtrate, regulating pH of the filtrate to be 7.1-8.5 with industrial-grade phosphoric acid, then adding potassium carbonate and potassium hydroxide solution into the filtrate for neutralizing, after finishing the reaction, regulating pH to be 8.5-9.5, filtering so as to obtain filtrate, continuously regulating pH of the filtrate to be 4-4.5 through industrial-grade phosphoric acid, regulating the density of the reaction liquor, and after completely dissolving out the crystal, centrifugally drying so as to obtain monopotassium phosphate. The method is simple; the product can meet the requirement of first-grade goods of national industrial standard, the content of monopotassium phosphate is over 98%, and the yield of the product monopotassium phosphate is high, so that the method is applicable to large-scale industrial application; the method lowers the cost of the product by adopting low-cost feed-grade calcium hydrophosphate and returning the dehydration mother liquor back to a reaction kettle for cycle use, and avoids strong corrosion to equipment in the technological process.

The production method of the transformer oil anti-gassing additive of the present invention is as follows: firstly, the petroleum distillate with a boiling point of 250 to 500° C. is used as a raw material, and cobalt-molybdenum, nickel-molybdenum, tungsten-nickel, molybdenum-cobalt-nickel hydrogenation catalysts are used. Any one or more than one catalyst is subjected to a hydrotreating process; secondly, the resulting oil after the hydrotreating process is distilled at normal pressure to distill a fraction with a boiling point of 280 to 360°C to obtain a transformer oil anti-gassing additive; The method of use is as follows: the anti-gassing additive of transformer oil is added to ordinary transformer oil for blending to obtain ultra-high transformer oil; the invention has the following advantages: the pollution to the environment is reduced, and the blended ultra-high transformer oil makes dehydration easier Easy, so that the product output and quality have been greatly improved.