40results about How to "Axial temperature difference is small" patented technology

The invention discloses a system for recovering pure hydrogen and liquid HCl through polysilicon tail gas treatment, and the system mainly comprises a tail gas circulated condensing and washing tower, a chlorosilane stripper and a HCl rectifying tower, wherein the tail gas circulated condensing and washing tower is equipped with a polysilicon tail gas inflow pipe, a first chlorosilane solution outflow pipe and a first hydrogen outflow pipe, and the first chlorosilane solution outflow pipe is connected with the chlorosilane stripper; the chlorosilane stripper is equipped with a reboiler, a second chlorosilane solution outflow pipe, a first HCl outflow pipe and a stripping backflow pipe, and the first HCl outflow pipe and the stripping backflow pipe are connected with the HCl rectifying tower; and the HCl rectifying tower is equipped with a condenser, a separator and a second HCl outflow pipe which are connected in turn, and the separator is equipped with a non-condensable gas outflow pipe. The invention also discloses a process for recovering pure hydrogen and liquid HCl through polysilicon tail gas treatment. Through the system and process disclosed by the invention, the polysilicon tail gas is turned into things of value, the resources are saved, and simultaneously the energy consumption during the treatment process is reduced.

The invention provides a suspended bed reactor and a method for realizing liquid phase self circulation by using the same. The reactor comprises a reactor shell and a liquid-phase circulation pipe and an inlet jet distributor which are arranged in the shell; the inlet jet distributor includes an annular boss and a guiding object, the annular boss is arranged on the inner side wall of the shell near a liquid flow inlet, the guiding object is arranged above the liquid flow inlet, the largest outer diameter of the guiding object and the smallest inner diameter of the annular boss are arranged in a relative manner to make the aperture diameter of a liquid inlet channel formed between the guiding object and the annular boss smallest. According to the suspended bed reactor, with use of self pressure energy of inlet materials and pressure energy generated by the difference of the densities of the interior and the exterior of the liquid-phase circulation pipe, liquid phase self circulation in the reactor is formed, not only can the linear speed of a liquid phase be improved to facilitate coke discharging, but also the axial temperature difference of the reactor can be reduced, and the reaction released heat can be used for heating an inlet feed material. At the same time, the interior of the reactor has no flow dead zone, and coking can be effectively reduced or even avoided.

The invention discloses a fixed bed fischer-tropsch synthesis method. A synthesis gas and high-temperature method fischer-tropsch synthesis oil enter a fixed bed fischer-tropsch synthesis reactor, and are subjected to fischer-tropsch synthesis reaction under the action of a catalyst; and effluent of the reactor is separated to obtain the gas, liquid hydrocarbon and water. According to the fixed bed fischer-tropsch synthesis method, the axial temperature difference of the fixed bed fischer-tropsch synthesis reactor is effectively reduced; the temperature distribution of a catalyst bed is more uniform; the selectivity of liquid hydrocarbon products is improved; and the diesel distillate efficiency of the synthesis oil is increased through further chain increase of the high-temperature method fischer-tropsch synthesis oil.

The invention discloses a gas-liquid interlaced cooling high power density motor, and belongs to the field of high power density motors. An armature winding of the motor is wrapped by an insulating bushing, supported by a non-metal T-type support, and fixed through a slot wedge, and an axial cooling medium channel inside a stator core is formed. A space defined by a non-metal airtight cylinder, a housing case inner wall, the stator core, a first annular sealing plate and a second annular sealing plate in an enclosed mode constitutes a stator side airtight cooling cavity. Liquid-state cooling media flow from a liquid inflow guiding tube into the axial cooling medium channel inside the stator core, trickle down onto a rotor through first to Nth trickling holes, flow out from a liquid outflow guiding tube and a second liquid outflow guiding tube, and are cooled through a liquid cooling device. Gas-state cooling media enter from a gas inflow guiding tube and flow out from a gas medium outlet hole. Different cooling channels are combined into an interlaced multi-dimensional space cooling system, working temperature rise of the motor is effectively reduced, stability is improved, and unbalanced thermal stress influences caused by axial temperature difference are reduced.

The invention belongs to the technical field of energy utilization, and provides a method for making an oil product taking methane as a raw material. The method comprises the following steps that (1)the raw material methane serves as virgin gas of reforming reaction after being decontaminated, purified and compressed through a purification compression system; (2) the virgin gas enters into a reforming reaction system and is translated into synthesis gas; (3) the synthesis gas enters a Fischer-Tropsch synthesis system for reaction to generate a Fischer-Tropsch synthesis product; (4) the obtained Fischer-Tropsch synthesis product is subjected to gas-liquid separation in a separation system to obtain a hydrocarbon product, a gas product and synthetic water respectively; (5) the hydrocarbon product enters a hydrocarbon product hydroisomerization system for hydrogenation and quality improvement to obtain the oil product not containing sulfur, nitrogen and arene; and the balance of pressureand material flow between a reforming reactor and a Fischer-Tropsch synthesis reactor is controlled through a pressure flow coupling control system. The method fully develops and utilizes potential value of the methane to achieve that the methane is translated into the oil product.

The invention provides a fine desulfurization process for coke-oven gases. The fine desulfurization process comprises the following steps: treating the coke-oven gas in a deoiling tower and a pre-desulfurizing tower, performing heat exchange with main gas generated after main hydrogen desulfurization, feeding the gas into a pre-hydrogen desulfurization reactor, increasing the temperature through a heater, feeding the gas into a main hydrogen desulfurization reactor, performing heat exchange on a gas obtained after reaction so as to reduce the temperature to 280-360 DEG C, feeding the gas into a medium temperature desulphurization tower to remove H2S and most organic sulfur, further feeding the gas into a medium temperature hydrolysis tower to further convert the organic sulfur such as COS and CS2 into H2S, and finally feeding the gas into a medium temperature fine desulphurization tower in the presence of a medium temperature fine desulfurizing agent. After the coke-oven gases are treated by using the fine desulfurization process, the total sulfur can be reduced to be less than 0.05 mg / Nm<3>, a later synthesis catalyst can be effectively protected, and the service life of the synthesis catalyst can be prolonged.

The invention discloses a motor multipath series-parallel water cooling system. The motor multipath series-parallel water cooling system comprises a water pipe at the tail end of the stator core yoke portion of the linear portion of an electric generator and a motor end winding external cooling waterway, and a water loop is composed of the water pipe at the tail end of the stator core yoke portion of the linear portion of the electric generator and the motor end winding external cooling waterway; the motor end winding external cooling waterway is composed of a cooling water pipe cooling system loop of a lower winding layer and a cooling water pipe cooling system loop of an upper winding layer; the cooling water pipe cooling system loop of the lower winding layer is composed of at least one set of circumferential water pipes which are communicated in the direction from the linear portion to the nose end, and the cooling water pipe cooling system loop of the upper winding layer is composed of at least one set of circumferential water pipes which are communicated in the direction from the linear portion to the nose end; the inner-diameter pipe wall of the cooling water pipe cooling system loop of the end lower winding layer is laid on the outer-layer surface of the lower winding layer; the outer-diameter pipe wall of the cooling water pipe cooling system loop of the end upper winding layer is laid on the inner-layer surface of the upper winding layer.