89results about How to "Reduce the cycle rate" patented technology

Process for producing a copper-containing aqueous solution, in which a copper mass is dissolved in the presence of air in an aqueous leach liquor containing monoethanolamine and an acid, wherein the amount of acid equivalents is between 0.05 and about 0.7 times the equivalents of monoethanolamine, and wherein the rate of copper dissolution into the aqueous leach liquor is greater than about 4.3 grams of copper per liter of leach liquor per hour until a product having at least about 80 grams per liter is obtained.

A gas regulator block can be configured to mount to a barrel of a firearm. A gas regulator can be disposed substantially within the gas regulator block and can be configured to adjustably vary an amount of gas flow through the gas regulator block. A cover configured to cover a portion of the gas regulator block to inhibit inadvertent adjustment of the amount of gas flow and configured to uncover the portion of the gas regulator block to facilitate intentional adjustment of the amount of gas flow. A gas passage can be formed in the gas regulator block in a forward location and the gas port can be configured to communicate gas from the barrel to the gas regulator.

An absorber (110) in a gas treatment plant (100) produces a rich solvent (116) that is flashed to produce flashed rich solvent (134D) and recycle gas (132D), wherein the recycle gas (132D) is not mixed with the absorber feed gas (112) as commonly practiced, but mixed with the rich solvent (116). Such configurations exhibit superior rich solvent loading, thereby reducing solvent circulation. Further contemplated gas treatment plants (100)may also include a regenerator (150) in which carbon dioxide from atmospheric flashed vapor (142) of the rich solvent (144) is employed as a stripping gas in a regenerator (150) to strip hydrogen sulfide from the rich solvent (144), and wherein sweet gas (114) is employed to strip the carbon dioxide from the rich solvent (144).

In a cooling system for cooling a heating element mounted in a vehicle, a radiator is located at a position higher than a heat sink, which absorbs heat from the heating element. When the amount of heat generated from the heating element, which is detected by a sensor, is greater than a predetermined first value, a blower is operated. Further, when the detected amount of heat is greater than a predetermined second value that is higher than the predetermined first value, a pump is operated. When the detected amount of heat is equal to or less than the predetermined first value, the pump is stopped and the cooling water is circulated by a principle of heat siphon. Accordingly, power consumption of the pump is reduced. Further, power consumption of the cooling system is reduced or an increase in power consumption of the cooling system is restricted.

A bottom hole assembly is configured with a drill bit section connected to a pulse generation section. The pulse generation section includes a relatively long external housing, the particular housing length being selected for the particular drilling location. The long external housing is positioned closely adjacent to the borehole sidewalls to thereby create a high speed flow course between the external walls of the housing and the borehole sidewalls. The long external housing includes a valve cartridge assembly and optionally a shock sub decoupler. While in operation, the valve cartridge assembly continuously cycles and uses downhole pressure to thereby generate seismic signal pulses that propagate to geophones or other similar sensors on the surface. The amount of bypass allowed through the valve assembly is selectable in combination with the long external housing length and width to achieve the desired pulse characteristics. The bottom hole assembly optionally includes an acoustic baffle to attenuate wave propagation going up the drill string.

The invention discloses a multifunctional energy system based on the appropriate conversion of chemical energy of fossil fuel, which comprises a synthetic gas preparation and afterheat recovery subsystem for appropriately converting coal and natural gas into high temperature synthetic gas respectively through a partial gasification and reforming unit, cooling and then conveying the high temperature synthetic gas to a chemical product synthesizing and refining subsystem, and simultaneously conveying the generated high temperature steam to a power generation subsystem; a chemical product synthesizing and refining subsystem for pressurizing and conveying the received high temperature synthetic gas to a chemical product synthesis reactor for synthesizing the chemical product, and then obtaining the refined chemical product through a refining unit; and a power generation subsystem for converting the unconverted synthetic gas in the chemical product synthesizing and refining subsystem and the high temperature steam from the afterheat recovery subsystem into electric energy. According to the invention, the problems that complete gasification of coal and total reforming of natural gas canlead to large irreversible loss, the equipment is large and the cost is high are solved, the efficiency of the system is enhanced and the investment on system equipment is lowered.

An improved process for the catalytic gasification of a carbonaceous feedstock in a dual fluidized bed reactor for producing synthesis gas is disclosed. The disclosure uses γ-alumina as a catalyst support iand heat carrier in the gasification zone (102). The gasification zone (102) is operated at 700 - 750 °C to prevent substantial conversion of γ-alumina to α-alumina, which would manifest in the enablement of high catalyst loading and high recyclability. The catalyst is an alkali metal, preferably K2CO3, so that conversion proportional to total K2CO3 to solid carbon ratio is achieved with as high K2CO3 loading as 50 wt% on the solid support. The combustion zone (140) is operated at 800° - 840° C, to prevent any conversion of the γ-alumina to a-alumina, so that catalyst recyclability of up to 98% is achieved between two successive cycles.

An improved chemical looping combustion (CLC) process and system includes a hopper containing oxygen carrier particles, e.g., metal oxides, that are gravity fed at a controlled rate of flow from the hopper into (a) a generally vertical downflow reactor where they are mixed with all of the hydrocarbon fuel feed to the system and (b) into one or more standpipes that are in communication with a plurality of staged fluidized reactor beds, the amount of the oxygen carrier particles introduced into the system being stoichiometrically predetermined to produce a syngas mixture of H₂ and CO₂; or to complete combustion of the fuel to CO₂ and water vapor, thereby permitting capture of a majority of the CO₂ produced in an essentially pure form.

A reaction mixture for a polymerase chain reaction (PCR) includes water, DNA polymerase, deoxyribonucleoside triphosphates (dNTPs), tris(hydroxymethyl)aminomethane hydrochloride (Tris-HCl), potassium chloride, magnesium chloride, dithiothreitol (DDT), and an additive agent. The reaction mixture is capable of enhancing the sensitivity and specificity of PCR and increasing the yield of correct nucleic acid sequence copies when being used in PCR.

The invention relates to a cumyl hydroperoxide and propylene epoxidation method, which mainly solves the problems of high reaction temperature and high molar ratio of propylene and cumyl hydroperoxide to keep high reaction efficiency in the prior art. The method is as below: introducing the materials of cumyl hydroperoxide and liquid phase propylene into a reaction zone, and contacting the materials with a Ti-silica catalyst to conduct an epoxidation reaction under the conditions of epoxidation reaction temperature of 15-160 DEG C, pressure of 1.0-12.0 MPa and molar ratio of propylene and cumyl hydroperoxide of 2-30, so as to generate epoxypropane, wherein part of the epoxidation reaction products containing epoxypropane recycles to a reaction zone entrance. The technical scheme can well solve the above problems, and can be used in industrial production of epoxypropane from epoxidation of cumyl hydroperoxide and the propylene.

A short-length, belt fed machine gun for convenient use includes: (A) a receiver having a length in the range of about 17.75 inches to about 20.3 inches, (B) a barrel assembly, and (C) a gas cycling assembly. A gas port of the barrel assembly has a width of between about 0.063 inches and 0.200 inches. The distance between a center of the gas port and the breach of the barrel is between about 7.605 inches and about 9.395 inches. The gas cycling assembly features a unique polymer kinetic energy dampener assembly located longitudinally rearward of the operating rod, which is useful in achieving a desired cycle rate of the gun (e.g., about 600 rounds per minute (RPM)) and in minimizing muzzle climb. A unique mounting bushing selectively, removably mounts to the gas cylinder in order to achieve a shortened gun with many of the advantages of conventional longer weapons.

The invention relates to a recirculating prawn aquaculture method in combination with a nitrification-assimilation effect and belongs to the technical field of aquaculture. A culture system used in the method comprises a culture pond, a microfilter, a water circulating pump, a biofilter, an ultraviolet sterilization device and a Roots blower; when the culture system is utilized for culture, browngranulated sugar 40-50% of the bait feeding amount or molasses 50-60% of the bait feeding amount is added into the culture pond every day to promote growth of heterotrophic bacteria, and part of metabolic waste is removed by utilizing the bacterial assimilation effect. According to the method, in the circulating water culture system with nitrification as a water treatment core, a carbon source iscontinuously increased in the culture process, growth of the rhodobacteriaceae bacteria in a culture water body is promoted, the bacterial assimilation effect is strengthened, meanwhile, the nitrification effect of nitrification bacteria is not inhibited, the assimilation effect and the nitrification effect jointly purify the water body, the microbial water treatment efficiency is improved, the load of a water treatment system is reduced, and a culture water environment is improved.

Gas sweetening solutions are described that are capable of removing hydrogen sulfide from gas streams. These gas sweetening solutions increase the size of produced sulfur particles and thereby improve efficiency of their separation, while simultaneously reducing corrosive effects of the sweetening solutions.

The gas sweetening solutions comprise at least one chelating agent, cationic iron and a mixture of nitrite salt and phosphate species.

The invention relates to a method for producing propylene oxide. The method is mainly used for solving the problem of relatively high reaction temperature rise and the problem that a relatively high molar ratio of propylene to cumyl hydroperoxide is needed for keeping relatively high reaction efficiency in the prior art. The method comprises the following steps: enabling raw materials namely cumyl hydroperoxide and a propylene liquid phase to enter a multi-section adiabatic reaction area with at least two sections, and performing contact reaction on the raw materials and a Ti-silicon dioxide catalyst to prepare propylene oxide under the conditions that the epoxidation reaction temperature is 15-160 DEG C, the pressure is 1.0-12.0MPa and a total molar ratio of propylene to cumyl hydroperoxide is 2-30, wherein the raw material namely cumyl hydroperoxide enters each catalyst bed layer of the multi-section adiabatic reaction area in a sectional mode; and an epoxidation reaction product containing propylene oxide, obtained from an outlet of the multi-section adiabatic reaction area, is partially circulated to an inlet of each catalyst bed layer of the multi-section adiabatic reaction area. By adopting such a technical scheme, the problem of relatively high reaction temperature rise and the problem that the relatively high molar ratio of propylene to cumyl hydroperoxide is needed for keeping relatively high reaction efficiency can be relatively well solved; and the method disclosed by the invention can be applied to the industrial production of preparing propylene oxide from cumyl hydroperoxide and propylene by virtue of epoxidation.

The invention relates to an Undok pulverized coal gasification furnace, in particular relates to an Undok pulverized coal gasification furnace with a nitrogen, water vapor and synthesis gas-driven material return mechanism, and aims at solving the problems of high combustible matter content in fly ashes generated by an existing Undok pulverized coal gasification furnace and caused high specific coal consumption and low carbon conversion efficiency. The Undok pulverized coal gasification furnace comprises a gasification furnace body, a pipeline, a cyclone separator, a vertical feeding channel of cyclone separator outlet, a working gas flow control valve, a working gas pipeline and a horizontal feeding channel. The Undok pulverized coal gasification furnace is applied to the field of coal chemical industry.

The invention provides a rotator compressor. The rotator compressor comprises a crank shaft (1), a lower flange (2), a cylinder (3), a shell (4), and an oil pool (5) arranged at the inner bottom of the shell (4), wherein an oil blocking structure is arranged between the lower flange (2) and the bottom of the shell (4); and the oil blocking structure extends from the central axis position of the crank shaft (1) to the position near the side wall of the shell (4). According to the rotator compressor, the oil blocking structure is arranged between the lower flange and the bottom of the shell, so that the situation that the oil level in the position near the inner wall of the shell rises due to a centrifugal action generated through rotation driving of the crank shaft can be effectively prevented, the situation that the central oil level sinks too much due to the centrifugal action is effectively prevented, the central oil level is prevented from dropping too low, the purpose that the crank shaft can always suck oil from the oil pool is guaranteed, and the technical problem that lubricating, sealing and cooling functions of the compressor are decreased due to the fact that the crank shaft is short and stirs the oil is overcome.

A system and method of controlling the input and output speed of a continuous sheet of stock material is provided. More specifically, the present invention relates to a system and method used to perform an operation on a continuous sheet of stock material in a high speed manufacturing system. The continuous sheet of stock material may subsequently be received by a second system that performs a different operation on the stock material. In one embodiment, the second system forms the stock material into tabs for container end closures. The system includes an infeed accumulation device and an outfeed accumulation device. The infeed and outfeed accumulation devices enable the system to operate at a variable rate and out of phase with a high speed, coil fed manufacturing system to which the system may be removably integrated.

The invention relates to a silencer for reducing the oil circulation rate of a compressor. An outlet of the silencer is arranged under a motor stator coil, a cold medium discharged from the silencer is directly sprayed on the coil, and oil carrying in the cold medium falls back into an oil tank through the filtration by the coil, so the oil circulation rate is decreased. Compared with the prior art, the invention has the advantages of capability of reducing the oil circulation rate and noise of the compressor and the like.