55results about How to "Improve driving rate" patented technology

The invention relates to a method for recovering tail gas from phosphoric acid production. The process flow is as follows: the fluorine-containing gas enters the Venturi scrubber through the tail gas duct, and performs first-stage downstream spray washing with the washing liquid from the first washing pump, and the washed gas enters the first washing tower and the first washing tower. The washing liquid sent by the washing pump is subjected to the first-stage countercurrent two-layer spray washing again, and the gas after washing enters the second washing tower and the washing liquid sent by the second washing pump is subjected to the second-stage countercurrent two-layer spray washing. After being pumped by the tail gas fan, it enters the defoaming tower for defoaming, and finally discharges into the atmosphere through the chimney; the process water for washing first enters the second washing tower and is preheated and sprayed by the second washing pump, and then overflows from the second washing tower into The first washing tower is sent to the Venturi scrubber and the spraying device of the first washing tower by the first washing pump for spray washing and absorption. The beneficial effects of the present invention are: 1) reduce the gas flow rate, increase the washing and absorption efficiency; 2) preheat the washing liquid through the second washing tower, accelerate the formation of H2SiF6, and further strengthen the washing and absorption effect; 3) reduce the adhesion of the fan impeller, Reduce fan failures and corrosion of related equipment; 4) Strengthen the stability of operating indicators and increase the operating rate.

A driving force control system for a vehicle configured to control a driving force based on the accelerating operation by the driver. The vehicle comprises a drive unit including a prime mover and a transmission, an accelerator device; and a controller. The controller is configured to: calculate an operating amount of the accelerator device; calculate an operating speed of the accelerator device; calculate a target jerk; and control an output torque of the drive unit based on the target jerk, when the operating amount is smaller than a predetermined amount, and the operating speed is slower than a predetermined speed.

An image forming apparatus, a developing agent container and a controlling method of the same that improves a supply rate of developing agent from a developing agent container to a developing device that provides the developing agent to an image carrier.

The invention relates to a granulator capable of preventing central tubular beam from scaling, which comprises a kiln body, a central tubular beam and an ammonia distributor, wherein the central tubular beam is provided with a material bonding-preventing device consisting of a flexible baffle plate and a bracket; the flexible baffle plate is fixed above the central tubular beam by the bracket; and the flexible baffle plate is made in a size big enough to cover the upper part and the two sides of the central tubular beam. When accumulated in a certain weight, the materials falling onto the flexible baffle plate will fall off with the deformation of the baffle plate, the scaling-preventing effect is desirable, the machine-stop cleaning time is prolonged greatly, the normal and stable operation of production is ensured, and the production cost is reduced.

The invention belongs to the field of toluene diisocynate production technology and relates to a dehydration method during the production process of toluene diisocynate. Toluenediamine and phosgene have cold light gasification reaction to obtain a mixture flow of carbamyl chloride, amidogen hydrochloride and hydrogen chloride; the mixture flow flows into a phosgenation reaction tower; carbamyl chloride and amidogen hydrochloride react to produce toluene diisocynate and the by-product hydrogen chloride; at the bottom of a hydrogen chloride rectifying tower, the mixture flow of amidogen and hydrogen chloride is divided into two parts, most of the mixture flow returns to the top of the phosgenation reaction tower and serves as the backflow, and the rest of the mixture flow enters into a drain sump containing activated carbon as the catalyst; water and phosgene in the mixture flow react to produce hydrogen chloride and carbon dioxide to remove water in the mixture flow under the function of the activated carbon catalyst; the dehydrated mixture flow enters into the bottom of the phosgenation reaction tower for further rectification and is discharged from the bottom of the phosgenation reaction tower for next step. The dehydration technology is simple and environmentally friendly, the cost is low, and the dehydration effect is excellent.

A pattern matching method for use in manufacturing a semiconductor memory device increases a pattern matching rate between a GDS image and an SEM image. The pattern matching method includes extracting a scanning electron microscope (SEM) image and a graphic data system (GDS) image to perform a pattern matching; performing a two-dimensional furrier transform (FFT) for the extracted GDS image and analyzing a low spatial frequency; deciding whether or not a pattern is a repeated pattern or non-repeated pattern by using the analyzed low spatial frequency; and limiting an X/Y range for a pattern matching when the decision result is for the repeated pattern, and then performing the pattern matching between the SEM image and the GDS image.

The invention discloses an ammonium phosphate slurry pipeline compound dredge method which includes a first step of installing a dredging device, wherein a flange mounting seat is arranged on an opening of the tail end of a pipeline for producing ammonium phosphate slurries, a flange plate is fixed on the flange mounting seat, and the dredging device is supported on the flange plate, a second step of spraying cleaning media, wherein a portion, located inside the pipeline, of the dredging device can carry out spraying of the cleaning media on the inner wall of the pipeline, and the cleaning media soaked with the dissolving slurries can dissolve scale layers on the inner wall of the pipeline, and a third step of carrying out dredging, pushing a dredging rod in the process of spraying the cleaning media, and enabling a cleaning disc to move to clean the inner wall of the pipeline. Through the method, the pipeline does not need to be dismantled, and workers can carry out on-line dredging on the clogged pipeline, so the ammonium phosphate slurry pipeline compound dredge method can greatly reduce labor intensity of the maintenance workers, improves working efficiency, reduces safety risks in the operation process of the maintenance workers, shortens down time, and improves on-stream rate.

The invention discloses an overhead type multi-nozzle coal-water slurry gasifier. The overhead type multi-nozzle coal-water slurry gasifier comprises a coal-water slurry gasification furnace, a furnace hearth, a cover flange, an ignition work-starting burner nozzle and a plurality of coal-water slurry process burner nozzles, wherein the furnace hearth is nested in the coal-water slurry gasification furnace and forms a combustion chamber for coal-water slurry and oxygen gas; the cover flange covers the coal-water slurry gasification furnace; the ignition work-starting burner nozzle is arranged on the cover flange, and the coal-water slurry process burner nozzles surround the ignition work-starting burner nozzle. The number of the coal-water slurry process burner nozzles is increased, so that the power-on rate and operating flexibility of a gasification system can be effectively improved, and the operation and maintenance costs of the coal-water slurry gasification system are further reduced. The overhead type multi-nozzle coal-water slurry gasifier meets the needs of coal-water slurry gasifiers on large-scale development and has very great economic and social benefits.

The invention relates to a method for recycling the waste product and by-product in sulfuric acid method titanium dioxide production which adopts a forced circulation system which contains a sulfuric acid circulating pump, a cooler and recycle acid pipelines to cool and mix sulfuric acid, and combines the processes of refrigeration, purification and preparation of concentrated sulfuric acid in the sulfuric acid method titanium dioxide production to only one process through filtration, thus greatly simplifying the production process and reducing the production cost and investment. Because the invention adopts big flow forced circulation technology, the temperature of circulating sulfuric acid and the temperature difference are lower so that the demand to the material of the sulfuric acid circulating pump is reduced and the service life is prolonged; besides, the flow velocity on the sulfuric acid side of the cooler in the forced circulation technology is higher so that the scaling forming speed on the sulfuric acid side of the cooler is slower and the operation rate is higher. The invention solves the problems of the sulfuric acid method titanium dioxide production that the flows of refrigeration, purification and preparation of concentrated sulfuric acid are long, the investment is large, the operation rate is low, the production cost and the maintenance cost are high and the like, and the obtained economic benefit is remarkable.

This invention discloses a method for delaying deposition of sieve plate of extraction column, including following steps: applying a condensing liquid generated by the heat exchange of low pressure steam of a phosphoric acid concentration production system, the temperature of the condensing liquid being in the range of 100 to 120 degrees centigrade; applying an extracting agent that will be added into the extraction column to a heat exchanger so as to make it execute the heat exchange with the condensing liquid in the heat exchanger and to improve the extracting agent temperature; sending the extracting agent having higher temperature into the extraction column to realize the extraction to the iodine in the phosphoric acid; controlling the temperature of the extracting agent via adjusting the condensing liquid quantity in the heat exchanger, controlling the temperature difference of the acid temperature before entering and after existing from the column in the range of 5 to 20 degrees centigrade. This invention can reduce the deposition of the sieve plate of the extraction column, improve the system driving rate, thereby improving the running efficiency of the system and realizing the production cost.

The invention discloses an ammonium phosphate flash evaporation chamber improved structure which comprises a flash evaporation chamber (1), a feed pipeline (2), a slurry circulating pump (3), a slurry heater (4) and a discharge pipeline (5). The part, close to a pipe opening on the bottom, in the flash evaporation chamber is provided with a cross-shaped sheath (6). Therefore, compared with the prior art, the ammonium phosphate flash evaporation chamber improved structure is low in cost, simple, and easy to process; the slurry circulating pump maintains the stable feeding velocity through the effect of the cross-shaped sheath, the slurry turbulent flow phenomenon is prevented, and further, the possibility of bonding slurry into blocks is reduced; meanwhile, slurry, which is bonded into blocks, can be prevented from entering the feed pipeline, so that the blocking possibility of the slurry heater is reduced, the driving rate is improved, and further, the production cost is lowered while the production efficiency is improved.

The invention relates to a method for raising the decomposition yield of cumyl hydroperoxide of a phenol-acetone unit.The method includes the steps that 1, first-level decomposition liquid is recycled to a decomposer through a special distributor after being cooled; 2, a concentrated sulfuric acid catalyst is added into a decomposition liquid recycling system from two different points; 3, the concentration of sulfuric acid in the decomposer is lowered; 4, standing time of decomposition liquid in the decomposer is increased, and the reaction temperature of the decomposer is lowered; 5, standing time of the decomposition liquid in a second-level composer is increased; 6, the reaction temperature of second-level decomposition is increased; 7, flash evaporation is conducted on materials discharged through second-level decomposition to recycle energy, total or part of flash evaporation condensate liquid is recycled to the decomposer, and the remaining part is sent to a crude acetone tower on the downstream of the phenol-acetone unit; 8, part of decomposer steam condensate liquid is sent to a fine acetone tower on the downstream of the phenol-acetone unit or fed into a feeding tank.The method mainly solves the problems that by means of an existing phenol acetone production technology, the decomposition yield is low, a great number of tar by-products are generated, and a distilled fed material is high in salt content.

A simple tubular filter comprises a baffle, a filter tube and a flange. The baffle is fixedly connected with the filter tube, and the filter tube is in threaded connection with the flange. The simple tubular filter is applicable to the field of wet-process smelting for treatment of various materials and can greatly decrease the time required by dredging of a blocked position and downtime, ensure production continuity, stabilize control of technical indexes, improve the product quality and reduce the working intensity of workers.