82results about How to "High gas velocity" patented technology

A scrubber system is provided which enables a substantially horizontal flow path for the gas which is being subjected to scrubbing. Among other advantages, this permits operation of the absorber with a differential pressure of zero or less. Scrubber composition spray means are positioned in the horizontal gas flow path for spraying an aqueous scrubber composition in a direction which is generally cocurrent with said gas flow. The system is free of means which spray the scrubber composition in directions countercurrent to said gas flow.

Apparatus (1) for injecting a liquid in an area of a thermal spray gun (100). The apparatus (1) includes an injector cleaning device (10) having an inlet connectable (19) to at least one feedstock supply line (18), an inlet connectable (17) to at least one gas supply line (16), and an inlet connectable (21) to at least one liquid medium supply line (20). An injector (30) orifice is coupled to the injector cleaning device (10) and is adapted to at least one of inject a liquid jet into a hot stream created in the area of the thermal spray gun (100) and receive feedstock, gas and liquid passing into the inlets.

The invention discloses a gas phase combustion reactor for preparing nanometer particles and the industrial application method. By changing the nozzle structure of the reactor in the prior art, the reactor enables the reaction material and the combustion gas to be evenly mixed to form ultrahigh speed jet flame, overcomes the defects of uneven temperature field and concentration field and liability to scab of nozzle, and enables continuous production for long period. The gas phase combustion reactor can be used for industrial and continuous preparation of various oxide nanometer particles such as nanometer titanium dioxide, silicon dioxide, aluminum oxide, and antimony doped tin dioxide.

The auxiliarily combustion reactor of the present invention has improved nozzle structure, and the vapor process of preparing nano SiO2 is superior to available process, which has non-homogeneous temperature field and concentration field in combustion reactor, uneven retention time of material in the combustion reaction area, and easy scaling in the nozzle outlet and other demerits. The present invention has raised nano SiO2 product quality.

The present invention relates to a methane and oxygen pre-mix device, mainly consists of a casing, a gas distributed system, a heat exchange system and a multiorifice gas distribution plate; the gas distributed system adopts the rotational flow or the circular flow gas distributed system; the rotational flow gas distributed system consists of a methane air intake system, an oxygen air intake system, an upper distributor and a lower distributor; the circular flow gas distributed system consists of center feed pipes, cross feed pipes and ring gas distributor of the methane and the oxygen; the heat exchange system consists of an upper separator, a lower separator, a centre internal pipe, an external pipe, a metal fin, a heat exchange medium inlet pipe and a heat exchange medium outlet pipe; via the gas distributed system, the methane and the oxygen have a preliminary mixture in a smaller space, then by the stimulant fluidized bed consisting of the centre internal pipe, the external pipe and the metal fin, circuitously flowing upwards, achieving a molecular level mixture at the exit. The present invention effectively increases the pre-mix effect and guarantees the inflaming retarding and explosion prevention of the pre-mix chamber, having a good function in the industry of methane partial oxidation to syngas.

The invention discloses a synthetic craft of petrol co generating aromatic hydrocarbons with synthesis gas, which comprises the following steps: mixing methanol synthesis and methanol-watering activator; loading into plasm-stating bed reactor; loading ZSM-5 activator into fixed bed reactor at normal pressure; leading into diluting hydrogen gas (H2/N2); proceeding programmed temperature deacidize for activator in plasm-stating bed; getting tail gas; proceeding preheat for fixed bed activator with the tail gas; leading synthesis gas with H2/CO at 1-5 : 1 into plasm-stating bed after finishing reduction under 3.0-7.0MPa; controlling reacting temperature at 260-300 deg.c and gas space velocity at 30000-120000h-1; making the reacting product enter into fixed bed with equal pressure; setting the reacting temperature at 300-400 deg.c and gas space velocity at 10000-40000h-1; proceeding synthetic reacting. This invention possesses merits of big gas speed, good heat diffusion and minor equipment investment.

The invention discloses an apparatus for continuously preparing thin-layer grapheme or a hybrid combining the thin-layer grapheme with thin-walled carbon nanotube and a preparation method of the thin-layer grapheme or the hybrid combining the thin-layer grapheme with the thin-walled carbon nanotube by utilizing the apparatus, which belongs to the field of multiphase flow reactor technology and carbon nanomaterial preparation. The apparatus provided by the invention comprises a downer, a riser and a heating system wrapped on the outside of the riser for heating up. According to the method, the heating system is started; reaction gas and a template are led through the entrance of a gas-solid mixture of the downer to grow thin-layer grapheme, or the reaction gas and a catalyst are led to grow hybrid of thin-layer grapheme and thin-walled carbon nanotube; and then the reaction gas is led through the a gas inlet of the riser; all gas-solid mixture moves forward, passes through a member area, gets out of the riser and enters a subsequent gas-solid separation section and a cooling and storage section. The apparatus provided by the invention has the advantages of simplicity in structure and low cost of equipment. The method provided by the invention has low environmental pollution and the obtained product has high quality.

The invention discloses an industrial method for preparing ultra-clean high-purity reagent-grade hydrochloric acid from industrial hydrochloric acid through purification. The method comprises the following steps: filtering the industrial hydrochloric acid, dechlorinating activated carbon fibers, performing ion exchange through an anion exchange resin column, heating and evaporating; removing high-boiling-point substances out of gas-phase fractions through a super-pure polytetrafluoroethylene-dipped graphite packing tower, washing the gas-phase fractions in a stannous mono-sulfate solution, washing with high-purity water, then absorbing the high-purity water , thus obtaining the ultra-clean high-purity hydrochloric acid product. The method also can comprise a step of second distillation. The aim of realizing high-quality high-efficiency industrial batch production of ultra-clean high-purity reagent hydrochloric acid is reached.

A device and method are provided to allow the flowpaths in a fuel cell stack to be reconfigured dependent on reactant gas throughput in order to maintain appropriate pressure drop, sufficient velocities, and reactant concentrations of each cell of a fuel cell stack.

The invention discloses a high efficiency wet-type desulfurization method through ammonia recovery method for oxidation and concentration outside a tower, and a device thereof. The method comprises the following steps: (1) feeding flue gas into the top part of a concentrating tower after dust removal, cooling down and humidifying the flue gas, then feeding the flue gas into a first level venturi section of a desulfurization absorption system to contact atomized ammonia water so as to have the first level absorption reaction, performing the second level and the third level desulfurizations, and discharging the flue gas after the purification; (2) oxidizing the ammonium sulfite solution generated in a desulfurizing tower and then overflowing the ammonium sulfite solution into a mother liquor tank from the top part of an oxidation tank; and (3) pumping the ammonium sulfate solution in the mother liquor tank to the top part of the concentrating tower through a mother liquor pump to perform heat exchange with the high temperature flue gas after atomization so as to form a supersaturated solution containing 3 to 5 percent of crystal, wherein the supersaturated solution flows out of the bottom of the concentrating tower and is pumped into a hydraulic cyclone through a slurry pump to perform the first level solid-liquid separation, and then the clear solution automatically flows into the mother liquor tank; the crystal-liquid mixed solution flowing out of the bottom of the concentrating tower automatically flows into a centrifugal machine to perform the second level solid-liquid separation, and then the clear solution automatically flows into the mother liquor tank; and solid ammonia sulfate is fed into an automatic packaging machine to be packaged and put into storage. The method has simple processes, greatly reduces investment, and can reclaim agricultural level ammonia sulfate and industrial level ammonia sulfate.

When a fuel-cell electric vehicle is running at idle, and a predetermined period of time has elapsed since the vehicle comes into the idle state, forthcoming stopping of an operation of the vehicle is predicted, and the operation mode of a fuel cell is shifted to a residual water reduction mode in which residual water remaining inside the fuel cell is reduced. In the residual water reduction mode, for example, the amount of humidification for air to be supplied to the fuel cell is reduced, so that the air with reduced humidity passes through the fuel cell, to thereby increase the amount of residual water removed by the air. Accordingly, the residual water inside the fuel cell can be reduced before the actual stopping of the operation of the vehicle.

The invention discloses an efficient tubular plate vertical current wet-type electrostatic dust collector. The efficient tubular plate vertical current wet-type electrostatic dust collector comprises a shell (1), wherein an anode dust collecting mechanism (2) arranged vertically is arranged in the shell (1) and adopts a tubular plate structure formed by dust collecting boards; a vertically arranged cathode wire (31) with discharge points is arranged between the tubular plates of the anode dust collecting mechanism (2); the upper end of the cathode wire (31) is fixed on a cathode girder (32) above the cathode wire (31); the lower end of the cathode wire (31) is fixed on a tension frame (33) blow the cathode wire (31); the cathode girder (32) is connected with a high voltage power supply system (4) through conductive wires; a cathode system is formed by the cathode girder (32), the cathode wire (31) and the tension frame (33). As an electrostatic field formed by the tubular plate anode dust collecting mechanism and the cathode wires, effectively solves the problem of difficult removing of PM2.5 tiny particles, acid mist, liquid drops, aerosol, heavy metals and the like from the smoke, and the efficient tubular plate vertical current wet-type electrostatic dust collector is widely used.

The invention discloses an internal-circulation biological fluidized bed system used for VOCs and malodorous gas treatments. The internal-circulation biological fluidized bed system used for the VOCs and malodorous gas treatments comprises a biological fluidized bed reactor which adopts a structure comprising an inner sleeve and an outer sleeve; the inner sleeve is used for forming an up-flow area of fluidized fillers, and the outer sleeve is used as a down-flow area of fluidized fillers, and the fillers are high-molecular light fillers; the air inlet of the biological fluidized bed reactor is located at the bottom, and is connected with a humidifying unit; the fillers in the reactor are in fluidized state; microorganisms attach on the surfaces of the fillers, so that the VOCs and the malodorous gas are removed by mass transfer and degradation processes when the VOCs and the malodorous gas pass through the reactor; and moisture and nutrients are uniformly transported into the gas by the humidifying unit. The fillers have the characteristics of light weight and easy fluidization property; the internal-circulation sleeve reactor structure is capable of ensuring fluidization of the fillers at a relatively low gas velocity; and the pressure drop of the reactor is relatively low. The internal-circulation biological fluidized bed system used for VOCs and malodorous gas treatment overcomes disadvantages of traditional biological waste-gas purification devices, namely low mass transfer efficiency and uneven microbial distribution, and can be used for purifying the VOCs and the malodorous gas in the fields of industry, municipal administration, agriculture and the like.

A composition for manufacturing the inner liners and inner tubes of tires, and a method of preparing the same. The composition includes the following two phases: A) a continuous phase of a composition of graphene oxide/rubber including graphene oxide, a reactive rubber, and a solid rubber; and B) a dispersion phase of an epoxy natural rubber or a thermoplastic resin. In the composition of graphene oxide/rubber, the graphene oxide leads to low gas permeability and remarkably reinforces the rubber composition. The epoxy natural rubber or thermoplastic resin is dispersed in the composition of graphene oxide/rubber and forms an islands-in-the-sea structure. The composition has low gas permeability, excellent mechanical properties, and flexibility, and is adhesive to adjacent rubber.

The invention relates to the technical field of coal gasification, in particular to a fluidized bed gasifier, a coal gasification system and a method, can satisfy the heat requirement of overall reaction in the furnace, have no need for introducing oxygen burning coal to provide heat, lower the risk of easy slagging in the gasifier due to introduction of oxygen, at the same time can promote forward overall reaction in the furnace, have no need for returning substantial synthesis gas to the furnace to increase the methane yield, and lower the risk of inhibition on overall reaction in the furnace caused by return of synthesis gas to the furnace. According to the fluidized bed gasifier, the bottom is a gas distribution plate area, a fluidized bed reaction area is disposed above the gas distribution plate area, a variable diameter section with a gradually enlarging inner diameter from the bottom up is disposed between the fluidized bed reaction area and the gas distribution plate area, thebottom of the fluidized bed gasifier is equipped with deslagging port, the side wall of the fluidized bed gasifier corresponding to the fluidized bed reaction area is equipped with coal inlets, and the lower part of the variable diameter section is equipped with a carbon carrier inlet.

The present invention discloses an inverted cone-shaped flow baffling demister, which comprises a plurality of demisting assemblies, wherein each demisting assembly comprises a gas rising pipe and an inverted cone cylinder, the inverted cone cylinder is arranged on the outer side of the gas rising pipe and is at the same axis line as the gas rising pipe, the gas rising pipe is fixed on a tower disk, the top portion of the gas rising pipe is provided with a sealing cover plate, the circumference of the gas rising pipe is provided with a plurality of seams, and the gas rising pipe circumference close to each seam is provided with tangential diversion wings. According to the inverted cone-shaped flow baffling demister, the separation of the liquid droplet and the gas is achieved through the multiple flow baffling during the fluid flowing process; and the inverted cone-shaped flow baffling demister has characteristics of simple structure, easy installation and effective gas-liquid separation achieving, and is suitable for the gas-liquid separation process in the fields of chemical industry, environmental protection, and the like.

The invention relates to a device and a method for producing crystalline bodies by directional solidification. The device comprises a melting furnace (11) having a heating chamber (12) in which at least one supporting surface (13) for a crucible (8) and at least one gas purging device arranged above the supporting surface (13) and having a gas outlet facing the supporting surface (13) are defined. An embodiment of the device is characterized in that the gas outlet is defined by one or more openings in a lower plunger surface of a plunger-shaped element (2) which has a geometry adapted to the inner shape of the crucible (8), said shape allowing an at least partial insertion of the plunger-shaped body (2) into the crucible (8). The gas purging device and/or the supporting surface (13) comprise an adjusting mechanism or are designed to be adjustable in such a manner that they allow an adjustment of a perpendicular distance between the supporting surface (13) and the plunger-shaped body (2). The device and the corresponding method allow carbon- and oxygen-containing materials to be discharged from the melt more efficiently and in a controlled manner. The device and the method thus allow—within certain limits—a specific adjustment of the carbon and oxygen content of the crystalline bodies.