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

THe invention provides a method for separating acetic acid and water by complexation, extraction and rectification process. Said invention utilizes the acting force between organic alkali and acetic acid, which is stronger than that of water, and greatly raises the relative volatilities of acetic acid and water so as to separate them. In the fractionating recrtifying tower with 10-50 theoretical plates it adopts tertiary amine organic alkali as complexation extracting agent, under the condition of normal pressure (or reduced pressure), its solvent ratio is 0.5-5 and refluxing ratio is 0-5, the water whose mass fraction is greater than 99.7% can be obtained from tower top, and in the solvent recovering tower with 5-40 the oretical plates, under the condition of reduced pressure and refluxing ratio of 0.5-5 the acetic acid whose mass fraction is greater than 95.0% can be obtained.

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%.

The invention discloses an axial grading combustion chamber of a gas turbine and a control method of the axial grading combustion chamber. The axial grading combustion chamber comprises a combustion chamber structural assembly, a first-stage premixed jet nozzle assembly, a first-stage on-duty nozzle assembly and a second-stage premixed jet nozzle assembly. A head baffle of a first-stage combustionchamber and a front wall of a combustion chamber case form a head part of the combustion chamber, and the first-stage on-duty nozzle assembly is arranged in the center of the head part of the combustion chamber; the first-stage premixed jet nozzle assembly is arranged on a circumference of the head part of the combustion chamber by taking the center of the head part of the combustion chamber as acircle center; and the second-stage premixed jet nozzle assembly is positioned on a circumference of a head baffle of a second-stage combustion chamber by taking an axis of a flame tube of the first-stage combustion chamber as a circle center. According to the axial grading combustion chamber provided by the invention, through grading injection of fuel, residence time of the fuel in a high-temperature region is shortened while combustion efficiency is ensured, and two-stage soft combustion is realized, so that emission of nitrogen oxide by the combustion chamber of the gas turbine is greatlyreduced, and an outlet temperature of the combustion chamber can be further improved.

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.

A jet nozzle of a mild combustion chamber of a gas turbine comprises a fuel inside nozzle, a fuel outside spray hole, multiple rotational flow groove channels, an outside pipeline and an inside pipeline. The mixing uniformity of fuel and air at a jet nozzle outlet is improved, the outside fuel-air equivalence ratio is relatively low, flame root lifting is facilitated, too-early ignition does not occur easily, jets of the jet nozzle belong to weak rotational flows, the overall pressure loss is relatively low, the axial speed is not prone to attenuation, and increase of the smoke reflux ratio ofthe combustion chamber is facilitated.

The invention discloses a powder conveying device and an application thereof, belonging to the field of pneumatic conveying. The powder conveying device comprises a lifting pipeline, a feeding pipeline and a purging pipeline, wherein the lifting pipeline sequentially comprises a lower flange, a lower straight section, a lower contraction section, an expansion section, a middle straight section, anupper contraction section, an upper straight section and an upper flange from bottom to top; the feeding pipeline is arranged on the expansion section and is connected to the lifting pipeline; the axis of the feeding pipeline is perpendicular to the axis of the lifting pipeline; the purging pipeline is arranged on the expansion pipeline and is connected to the lifting pipeline; and the purging pipeline is located right above the feeding pipeline. The powder conveying device solves the technical problems of the powder conveying device in the prior art that a material dropping phenomenon easilyoccurs, and the pressure drop is large. The powder conveying device is capable of fully mixing powder and gas, has small pressure drop in a conveying process, is simple and operates stably and reliably.

The invention discloses an ejector and a fuel cell system comprising the same. The ejector is used in the fuel cell system and comprises a shell, a first cavity and a second cavity which are spaced from each other are arranged in the shell, and a backflow gas inlet for backflow gas to enter and a gas outlet for mixed gas to flow out are formed in the shell; the backflow gas inlet is communicated with the first cavity, and the gas outlet is communicated with the second cavity; the ejector further comprises a plurality of ejection assemblies, all the ejection assemblies are arranged in the shell and are used for ejecting the backflow gas in the first cavity, and one end of each ejection assembly extends into the second cavity and is communicated with the second cavity. The multiple injection assemblies are arranged in the shell, so that the flow and pressure of an injection gas of the whole injector are increased, meanwhile, the reflux ratio of the reflux gas is increased, and then the flow of the mixed gas of the injection gas and the reflux gas is increased. In addition, the length of the single ejection assembly can be reduced, and therefore the size of the ejector can be reduced.

The invention discloses an urban sewage oxidation treatment technology which comprises the following steps of: incoming water, coarse-screen filtration, fine-screen filtration, sedimentation in a grit chamber, sedimentation in a primary sedimentation tank, oxidation treatment in an A2/C oxidation ditch, secondary sedimentation treatment, disinfection treatment and effluent, wherein the oxidation ditch in the oxidation treatment in an A2/C oxidation ditch comprises an anaerobic zone, anoxic zone and an oxidation ditch zone; the phosphorus absorption staying time in the anoxic zone is 30-55min; the mixed liquid staying time in the anaerobic zone is 1-1.8h; an underwater stirrer is arranged in the anaerobic zone; and a surface aerator is arranged in the oxidation ditch. By adopting the oxidation treatment technology disclosed by the invention, the outer reflux ratio and the maximum mixed-liquid reflux ratio can be increased so as to improve the phosphorous removal and nitrate return efficiency and quality.

LD type wet desulfurization dedicated dedusting and water removal unit, applied to the outlet at the center of the top of the desulfurization tower, including water stop and water collection ring, plastic suction port, flue gas transition flue, inlet flange, outer ring, inner ring, gas and water capture The tank, the flushing water pipeline, the return pipe in the return tower area and the outlet flange, the air flow is discharged through the outlet of the desulfurization tower into the shaping suction port, and the air flow is integrated. During this process, a mushroom-shaped inlet flue gas isokinetic line will be formed at the shaping suction port. The flue gas enters a flat rectangular "S" channel, and the channel is divided into double-layer or multi-layer "S" channels with "S"-shaped partitions. Each channel is divided into a positive semicircle (210°) and an anti-semicircle. (150°). It has the advantages of simple structure and not easy to block, and is compatible with the original folding plate demister. The above structure shows that the efficiency of suctioning concentrated wet airflow is significantly higher than that of simply recovering liquid.

The invention provides an external cooling type low pure oxygen air separation system and method. The external cooling type low pure oxygen air separation system comprises a lower tower, a condensing evaporator, an oxygen inlet, an oxygen heat exchanger, a nitrogen heat exchanger, a throttle valve and a delivery pipeline; the condensing evaporator is arranged at the top of the lower tower; the throttle valve is arranged on an outer side of the lower tower; liquid oxygen is fed into the condensing evaporator through the oxygen inlet; raw material air is precooled by the heat exchanger to reach a saturation temperature before going into the bottom of the lower tower, and nitrogen in the raw material air rises to the top of the lower tower and goes into the condensing evaporator; one part of the nitrogen exchanges heat with the liquid oxygen in the condensing evaporator and thus is condensed into liquid nitrogen for flowing black, while the other part of the nitrogen is discharged out of the condensing evaporator and reheated by the nitrogen heat exchanger to reach a normal temperature before being recovered; the liquid oxygen is transformed into oxygen that is discharged out of the condensing evaporator and reheated by the oxygen heat exchanger to reach the normal temperature before being recovered; the liquid oxygen staying at the bottom of the lower tower is discharged out of the lower tower and delivered into the condensing evaporator at the top of the lower tower through the delivery pipeline with the throttle valve to serve as a cold source taking part in the heat exchange process.

The invention relates to a sewage treatment reactor and a treatment method thereof. The reactor comprises a box body, a water inlet pipe and a water outlet pipe, the water inlet pipe is installed at the bottom of the box body, the water outlet pipe is installed at the top of the box body, and an upper-layer aeration assembly, a flow guide assembly and a lower-layer aeration assembly are sequentially arranged in the box body from top to bottom; and the area where the upper-layer aeration assembly is located and the upper part are aerobic areas, and the area where the lower-layer aeration assembly is located is an anoxic area or an anaerobic area. Through the arrangement of a double-layer aeration assembly and a flow guide assembly, mixed liquid in the upper area and the lower area of the reactor can flow back and reach an extremely high reflux ratio, nitrification, denitrification and synchronous nitrification and denitrification reactions can occur in the reactor, accurate regulation and control of dissolved oxygen are assisted, and short-cut nitrification and denitrification, synchronous short-cut nitrification and denitrification and anaerobic phosphorus removal reaction can occur in the reactor, so that the sewage treatment efficiency is greatly improved.

The invention provides a method and a device for removing nitrate nitrogen pollutants by intensifying iron-carbon micro-electrolysis through a low-intensity magnetic field, and belongs to the technical field of denitrification. Under the action of a low-intensity magnetic field, microorganisms are inoculated on an iron-carbon carrier, nitrate-nitrogen-containing inlet water is introduced, iron-carbon micro-electrolysis corrosion hydrogen evolution and iron-carbon micro-electrolysis autotrophic denitrification are carried out, and nitrate-nitrogen-removed outlet water is obtained. Iron-carbon micro-electrolysis autotrophic denitrification is carried out under the condition of a low-intensity magnetic field, the activity of microorganisms and related enzymes can be improved, the corrosion potential of an iron-carbon carrier can be reduced, the iron-carbon micro-electrolysis corrosion hydrogen evolution rate is increased, the precipitation position and the precipitate attribute can be changed through the Lorentz force and the magnetic field gradient force effect, therefore, the formation of an iron-carbon carrier passivation film is relieved, and the nitrate nitrogen removal effect of microorganisms is effectively improved.

The invention discloses a special dust and water removal unit for LD-type wet desulphurization. The device is applied to a central outlet in the top of a desulfurizing tower. The device comprises a water stop and water collection ring, a shaping suction port, a flue gas transition flue, an inlet flange, an outer ring, an inner ring, a gas-water trapping tank, a flushing water pipeline, a tower return area return pipe and an outlet flange. The airflow is discharged from the outlet of the desulfurizing tower and enters the shaping suction port to undergo shaping. In the process, a mushroom-shaped inlet smoke constant-speed line is formed at the shaping suction port, smoke enters a flat rectangular S-shaped channel, the interior of the channel is divided into two layers or multiple layers ofoverlapped S-shaped channels through S-shaped partition plates, and each layer of channel is divided into a positive semicircle (210 degrees) and a negative semicircle (150 degrees). The device has the advantages of being simple in structure and not prone to being blocked, meanwhile, the device is compatible with an original folded plate demister, and it can be seen through the structure that thetreatment efficiency of pumping and concentrating wet airflow is obviously improved compared with pure liquid recovery.

The invention discloses an ABR (anaerobic baffled reactor) system to degrade high-concentration perchlorate wastewater, comprising: a reactor; and a plurality of baffles vertically arranged in the reactor. The baffles divide the reactor into multiple serial cells; each cell includes a lower flow chamber and an upper flow chamber; the cells are divided into a heterotrophic zone and an autotrophic zone along a flow propelling direction; the upper flow chambers of the heterotrophic zone are each filled with a sludge bed, the lower flow chambers are each provided with an inflow pipe, and a segmented inflow structure is formed; the upper flow chambers of the autotrophic zone are each filled with sulfur particles and quartz sand to form a double-layer filler. The ABR system herein has significant advantage in the treatment of perchlorate wastewater with inharmonious carbon-chlorine ratio.

The invention belongs to the technical field of design environmental protection, and particularly relates to a dust and water removal unit special for LD type wet desulphurization, and the following scheme is provided: the dust and water removal unit comprises a water stopping and collecting ring, the inner wall of the water stopping and collecting ring is fixedly connected with a shaping suction port, the outer wall of the shaping suction port is fixedly connected with a connecting ring, and the inner wall of the connecting ring is fixedly connected with an inlet flange; an inlet flue gas constant-speed line is arranged on the inner wall of the water stopping and collecting ring, a flue gas transition flue is arranged on the inner wall of the inlet flange, an outer ring is installed on the inner wall of the flue gas transition flue, and an inner ring is arranged in the outer ring. By arranging the flue gas transition flue, the treatment frame, the flow guide cover and the bent activated carbon adsorption plates, after flue gas enters the flue gas transition flue, the flue gas enters the treatment frame through the flow guide cover, and under the sealing and guiding action of the sealing plate, the flue gas can only pass through all the bent activated carbon adsorption plates; and the bent activated carbon adsorption plate prolongs the time that the flue gas is located in the treatment frame, and the flue gas adsorption treatment effect is improved.