78results about How to "Reduce holdup" patented technology

A reactor comprises a reaction zone, optionally containing a catalyst bed, and heat exchange means inoperative contact with the reaction zone, e.g. embedded in a catalyst bed, and arranged so as to received reactants for heat exchange purposes, wherein the heat exchange means is formed from a plurality of superposed metal plates wherein fluid flow channels have been formed, according t a pre-determined pattern, the channel-bearing plates being aligned during superposition to define discrete heat exchange pathways respectively for reactant and working fluids, and the said plates are diffusion bonded together.

A filter comprising a filter cartridge and a housing having at least one fitting and defining a chamber, the filter cartridge being disposed in the chamber, wherein the housing includes a fluid conduit which extends axially from the fitting along the periphery of the filter cartridge, the fluid conduit being isolated from the filter cartridge chamber along a substantial portion of the length of the fluid conduit.

The invention discloses a material bin and a bin leveling and unloading device thereof. The material bin is characterized in that the bin leveling and unloading device is assembled in a bin chamber; a lifting mechanism for driving a movable bracket to move up and down is arranged on a bridge type crane of the bin leveling and unloading device; a horizontal chain or belt transmission type bin leveling and unloading scraper plate conveying mechanism is assembled on the movable bracket and is provided with an upper scraper plate rotating to the upper side and a lower scraper plate rotating to the lower side; an outward extension part extending out of the lower side of the movable bracket is arranged on the lower side of the lower scraper plate. According to the material bin, the bin leveling operation of the bin chamber is smoothly finished through traveling and lifting of the bin leveling and unloading scraper plate conveying mechanism in the bin chamber, and the bin unloading amount of materials in the bin unloading operation is increased.

The invention relates to an integrated high propagation method of water planting of virus-free potato seeds and seedlings. The method comprises the steps that a multiplication technology of the water-planting virus-free seedlings and a water planting production technology of the seedlings and the seeds are integrated, and the concentration of nutrient solution components, the light quality of a supplementary light source, hormone components, seedling cutting times and the like are optimized at the same time. According to the method, the stability and security are high, operation and daily management are simple and convenient, the maintenance and production costs are low, the sound seedling index of water-planting potato plants are significantly improved, the yield and quality of the seedlings and mini-potato are improved, the plant propagation coefficient is enlarged, the production cycle of the mini-potato is shortened, and the method is of great importance in breeding of the potato seeds and seedlings.

The invention discloses an automatic control system preventing hydropexis deterioration of chamber water and a method thereof. A computer for hotel room register is connected with a computer for computing through the OPC protocol, the computer for computing extracts water consumption information to determine water demand through computing, a pressure transmitter, a residual chlorine detector, a water quality detector, a liquid level probe, a highest and lowest liquid level warning device, and an electric valve controlling water input and output of a water tank are all connected with a PLC automatic control system, signals of the pressure transmitter and the residual chlorine detector are taken as input end signals of a PID module, and signal output is achieved after a driving circuit drives a water pump and an automatic chlorinator. Manual control and automatic control can be combined, dynamic supervision is implemented, operability is high, economical efficiency is high, secondary pollution caused by hydropexis deterioration of water in the water tank due to long-time retention can be prevented, and water quality safety is guaranteed.

The invention provides an industrial robot. Cables go through an arm equipped with a wrist and arranged on one side of the industrial robot, so that an unfavorable condition that cables are scattered along with movement of the robot is avoided. An opening part (11a) which allows a cable (7a) to go through is disposed in one end side (11) of a hollow part (12). One end side of the cables (7a) is connected with relay parts (26, 27) on the base of the arm. The cables are provided with a bending part (7a) which bends between the relay parts and the opening part, a restraint member (31) which restrains the cable (7a) of the bending part, and the other end part (7b) which goes through the hollow part towards the wrist (15). The restraint member is larger than the opening of the opening part and can be pressed against the opening part or movably separated from the opening part. The length from the restraint member to the other end part is longer than the necessary length of the cable needed for the motion of the wrist. The restraint member can be detached and assembled in the way of clamping the cable. A guiding member (29) which guides the restraint member is provided so as to allow the central axes of the restraint member and the opening part to be consistent.

The invention relates to a centrifugal extracting wastewater dephenolization technology. A high-speed centrifuge is used as an extraction device to perform centrifugal extraction separation. The technology comprises the steps as follows: phenol wastewater and an extraction agent enter the centrifuge simultaneously for centrifugal extraction separation, an extract phase phenol solvent and extract phase wastewater are produced after separation, the extract phase phenol solvent enters a solvent recovery tower for rectification separation, and a solvent and crude phenol are recovered; the extraction agent extracted at the top of the tower enters the centrifuge again to be recycled, and the crude phenol is recovered at the bottom of the tower. Compared with the prior art, the technology has the benefits as follows: the technology is low in investment, small in occupied area, simple and reliable in technological process, high in dephenolization efficiency and capable of realizing recovery of the industrial crude phenol.

A flow-through conductivity sensor assembly comprises a housing (4) having a flow passage with an inlet end and an outlet end. The cross section of at least a section of the flow passage extension between the inlet and outlet ends is divided into a conductivity measuring channel (2) and a parallel by-pass channel (3) of larger cross-sectional area than the measuring channel (2).

Embodiments of the present invention provide valves that provide for uniform holdup volume. An embodiment of the present invention provides a valve comprising a valve body (e.g., one or more pieces) that defines a valve chamber having a valve seat, an inlet flow passage, an outlet flow passage and a diaphragm control flow passage intersecting the valve seat. The valve seat is shaped so that the valve has a fixed holdup volume when at least a threshold vacuum is applied to the diaphragm control flow passage. The valve further comprises a diaphragm movable towards and away from the valve seat. According to one embodiment of the present invention, the valve seat can have a semi-hemispherical shape to which the diaphragm conforms when a minimum vacuum is applied to the diaphragm control flow passage.

A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the well having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter within the well; a bed of sorbent particles within the well below the first filter; and a second filter having a diameter smaller than the first filter within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.

The invention relates to a liquid-liquid extraction mixer-settler and an extraction method and an application thereof. The mixer-settler comprises a mixing chamber and a clarifying chamber, wherein the side in the clarifying chamber near the mixing chamber is provided with a guide pipe which extends to the tail end of the clarifying chamber from an outlet of the mixing chamber; and at least the upper part or the lower part of the guide pipe in the clarifying chamber is transversely and fixedly provided with a wedge-shaped body. As the upper part and/or the lower part of the guide pipe in the clarifying chamber is fixedly provided with the wedge-shaped body, not only is the storage amount of organic phases in the settling chamber reduced, but also a large light-heavy two-phase settling area is provided so that the clarifying phase-splitting time is prolonged, and the clarifying separation effect is remarkable for an easily-emulsifying system or a system with larger viscosity; and the mixer-settler provided by the invention can be used for single-stage continuous extraction operation or multi-stage series-connected countercurrent continuous extraction operation.

The invention discloses a cooling spiral conveyor for powdery explosives, and belongs to a powdery explosive production device. The cooling spiral conveyor comprises a spiral body, a spiral groove, a power device, a transmission device, a combined water seal device, a feed device, a discharge device, a sealing cover plate and the like. Spiral blades of the cooling spiral conveyor are designed to be interlayers. A mandrel is in the form of a steel pipe. The spiral groove is also designed to be an interlayer. Inner cavities of the interlayer spiral blades, an inner cavity of the mandrel and an inner cavity of the interlayer spiral groove are communicated to form a cooling liquid circulation channel. When the explosives are conveyed, circulating cooling is conducted by leading in cooling liquid. A spiral is installed at a certain inclination angle. In this way, the explosives are effectively cooled while being conveyed to an inlet of a bundling press, low-temperature explosive charging is achieved, the hygroscopicity of the explosives is greatly reduced, the product quality is improved, and the storage period of the explosives is prolonged.

The invention relates to a method of extracting indium from a solution by adopting an impinging stream-rotating packed bed extractor, and belongs to the technical field of indium smelting. The method comprises the following steps: impinging and mutually mixing an indium-containing solution with an extracting agent in the impinging stream-rotating packed bed extractor to obtain an indium-loaded organic phase in an extracting process; carrying out reverse extraction on the indium-loaded organic phase in the impinging stream-rotating packed bed extractor to obtain an indium product and a no-load organic phase; and returning the load organic phase to the extracting process to be used as an extracting agent. The method can be used for lowering the consumption of the extracting agent in an indium extracting process, improving the production efficiency and the separating efficiency.

The present invention provides a drying device of high drying efficiency by effectively using the whole heat transfer face without retention and biting of a dried object. In this drying device (1), a rotary winding blade (5) composed of a plurality of base blades (5a) is installed rotatably around a rotating shaft (5b) in a drying tank (4) formed with a heat transfer face (2). Each base blade (5a) has a flat face (8) of elongate shape extending obliquely upward from one end part (18) toward the other end part (19) in a reverse direction to a rotating direction R, and a clearance U is formed between an outer peripheral end 10a and the heat transfer face (2). The clearance U is formed to be gradually larger in the reverse direction to the rotating direction. One end part (18) of the flat face (8) is continuous with a scraping plate (20), and a projecting part (21) is provided in the rotating direction R from the outermost end part of the scraping plate (20).

The invention discloses a multi-pipe reaction device for producing epoxidized soybean oil. The device comprises a pipe reactor unit or at least two pipe reactor units which are sequentially connectedin series and a feed pipe, wherein the pipe reactor unit comprises one or at least two enhanced heat transfer mixing reactor units sequentially connected in series, each enhanced heat transfer mixingreactor unit comprises one or at least two enhanced heat transfer mixing reactors sequentially connected in series, and a cooling water inlet and a cooling water outlet are formed in the enhanced heattransfer mixing reactor; a first feed port for introducing soybean oil, a second feed port for introducing mixed acid and a third feed port for introducing hydrogen peroxide are formed in the feed pipe in the axial direction, and the tail end of the feed pipe is communicated with the enhanced heat transfer mixing reactor. The invention further discloses a method of the multi-pipe reaction devicefor producing epoxidized soybean oil.

The invention discloses a high-adhesive-force and low-temperature refinishing paint composition and a preparation method thereof. The refinishing paint composition is prepared from a curing componentand a diluting component, wherein the curing component is prepared from the following components: a rheological auxiliary agent, acrylic resin, amino resin, a first solvent, a CAB (Cellulose Acetate Butyrate) solution and a leveling agent; the diluting component is prepared from the following components: a second solvent, a third solvent, a fourth solvent, a leveling agent, first isocyanate and second isocyanate. The preparation method of the refinishing paint composition comprises preparation of the curing component and preparation of the diluting component. After refinishing paint provided by the invention is subjected to color mixing, requirements on various refinishing paint in the market can be met. In a construction process, the surface of a coated part does not need to be subjectedto polishing treatment in a refinishing or coating process and the refinishing paint is directly sprayed, so that a refinishing procedure is accelerated and the time of a refinishing process is shortened; meanwhile, manual polishing is reduced and the refinishing cost is saved.

The invention discloses an anti-leakage aseptic cold filling system for a plant extraction concentrated solution. The anti-leakage aseptic cold filling system comprises a box body, bases, a feeding cylinder and a shell, the bases are fixedly connected to the four corners of the bottom end of the box body, a feeding pipe is fixedly connected to the top end of the box body, the feeding cylinder communicates with the box body, the shell communicates with the left side of the box body, and a jacking push rod is installed on the lower portion of the inner cavity of the box body. A placing plate isfixed to the upper end of the jacking push rod, and a filtering mechanism is mounted at the bottom end of the feeding cylinder. Bottle bodies needing to be filled are placed on the placing plate, theplacing plate is lifted through the jacking push rod, a drain pipe can fill the bottle bodies, after filling is completed, a sliding sleeve resets under the action of an extrusion spring, the slidingsleeve moves to drive a jacking column and a piston to integrally move, when the piston moves, the internal space of a cylinder liner changes, so that concentrated solution accumulated in the drain pipe flows back into the cylinder liner through a second connecting pipe, the retention amount of the concentrated solution in the drain pipe is reduced, the concentrated solution is prevented from accumulating drops, and the situation that the filling system is polluted due to leaking of the concentrated solution is avoided.