15 results about "Membrane feeding" patented technology

The invention relates to the technical field of aromatic hydrocarbon separation and purification, in particular to a system and process flow for removing C8 non-aromatic hydrocarbon in xylene through membrane separation, and the system comprises a membrane separation unit, a feeding unit, a permeation side system, an interception side system, an adsorption tower feeding buffer tank outlet line and a crossover line; the membrane separation unit is provided with a membrane feeding pipeline, one end of the membrane separation unit is connected to an outlet of the membrane separation feeding buffer tank, and the other end of the membrane separation unit is connected to an inlet side pipe orifice of the separation pipeline; a membrane feeding booster pump is arranged on the membrane feeding pipeline; a spiral-wound membrane assembly is arranged in the separation pipeline; the feeding unit is provided with a xylene redistillation tower top outlet line which is connected to an inlet of the membrane separation feeding buffer tank from the xylene redistillation tower top. According to the membrane separation process adopted by the method, the non-aromatic hydrocarbon removal rate can be more than 98% under the operation conditions that the feeding pressure is 1.68 MPa, the permeation side is 20 kPa and the interception side is 1.6 MPa, and the method has definite industrial feasibility and technical advantages.

Processes and systems are provided for treating the tail gas stream of a sulfur recovery plant. The process comprising the steps of treating the compressed tail gas stream in a pre-treatment unit to remove the impurities; separating the dry stream in a first stage membrane unit, the first stage membrane unit comprises a membrane selective to carbon dioxide and hydrogen; reducing a temperature of the cryogenic feed in a cryogenic cooler to produce a cryogenic stream; separating the cryogenic feed in a knock-drum to produce a liquid carbon dioxide and membrane feed; separating the membrane feed in a second stage membrane unit to produce a rubbery membrane permeate and a rubbery membrane retentate, where the second stage membrane unit comprises a membrane selective to carbon dioxide over hydrogen; and treating the rubbery membrane retentate in a hydrogen recovery process to produce a hydrogen product stream and a carbon dioxide lean stream.

The invention belongs to the technical field of traditional Chinese medicine separation and purification, and discloses a method for separating caulis sinomenii alkaloid by a microfiltration-ultrafiltration-nanofiltration-electrodialysis integrated membrane technology. An ultrafiltration membrane electrodialysis device is adopted, the ultrafiltration membrane electrodialysis device comprises an anode plate, a cathode plate and a membrane stack arranged between the anode plate and the cathode plate, and the membrane stack is formed by connecting n groups of electrodialysis units in series, the device sequentially comprises an anode, an anode chamber, [a cation exchange membrane, an acid chamber, an anion exchange membrane, a feeding chamber, an ultrafiltration membrane and a product chamber] n, a cation exchange membrane, a cathode chamber and a cathode from the anode to the cathode. According to the method, the maximum recovery rate of sinomenine hydrochloride can reach 84.1%, the recovery rate of magnoflorine can reach 68.2%, the method is a simple and efficient multi-membrane integrated separation method with low energy consumption and small pollution, and a new thought is provided for separation and purification in the field of traditional Chinese medicine alkaloids.

The utility model provides a diaphragm stacking device, and belongs to the technical field of voice diaphragm assembling equipment, and the device comprises a frame feeding assembly which comprises a conveying belt, a containing groove is correspondingly formed in the tail end of the conveying belt in the conveying direction, a rotary table is concentrically arranged in the containing groove, a suction cup is arranged at the top of the rotary table, and a telescopic positioning pin is arranged on one side of the rotary table; the limiting block is used for limiting a notch of the basin stand; the membrane feeding assembly is arranged on one side of the conveying belt and comprises a membrane temporary storage barrel, a strip-shaped groove is vertically formed in one side of the membrane temporary storage barrel, a supporting table is arranged at the bottom of the membrane temporary storage barrel, a lifting column is arranged in the supporting table and used for pushing out a membrane upwards, and a cross beam is arranged over the direction of the connecting line of the center of a containing groove and the center of the membrane temporary storage barrel in a striding mode. A vertically telescopic clamping jaw is movably arranged in the length direction of the cross beam and used for clamping the pushed-out membrane. By using the scheme provided by the invention, manual assembly can be replaced, the automation degree is improved, the placement position of the diaphragm does not need to be adjusted for the second time, and the efficiency is high.

Processes and systems arc provided for treating the tail gas stream of a sulfur recovery plant. The process comprising the steps of treating the compressed tail gas stream in a pre-treatment unit to remove the impurities; separating the dry stream in a first stage membrane unit, the first stage membrane unit comprises a membrane selective to carbon dioxide and hydrogen; reducing a temperature of the cryogenic feed in a cryogenic cooler to produce a cryogenic stream; separating the cryogenic feed in a knock-drum to produce a liquid carbon dioxide and membrane feed; separating the membrane feed in a second stage membrane unit to produce a rubbery membrane permeate and a rubbery membrane retentate, where the second stage membrane unit comprises a membrane selective to carbon dioxide over hydrogen; and treating the rubbery membrane retentate in a hydrogen recovery process to produce a hydrogen product stream and a carbon dioxide lean stream.

A water treatment system includes a source of inlet water, a prefiltration unit, a feeder, a pump, and a membrane element. The prefiltration unit is in fluid communication with the source and provides a prefiltered water to a prefiltered water line. The feeder is in fluid communication with the prefiltered water line and is positioned downstream of the prefiltration unit. The feeder is designed to deliver a chemical additive to the prefiltered water. The pump is in fluid communication with the prefiltered water line and a permeate flush line, and the pump is designed to increase a flow rate of water in a membrane feed line. The membrane element includes an inlet that is in fluid communication with the pump via the membrane feed line. The membrane element produces a permeate imparted with a first concentration of solutes and a retentate imparted with a second concentration of solutes.

The utility model discloses a tool and membrane conveying device which comprises a first conveying mechanism, a second conveying mechanism and a detection mechanism, the first conveying mechanism comprises two first conveying belts, and the two first conveying belts jointly bear tools and convey the jointly borne tools to a tool feeding station; the second conveying mechanism comprises two second conveying belts arranged in a spaced mode, the two second conveying belts jointly bear the membranes and convey the jointly-borne membranes to the membrane feeding station, and the tool feeding station is located over the membrane feeding station. The detection mechanism is arranged below the membrane feeding station, and after the membranes are conveyed to the membrane feeding station, the detection mechanism is configured to penetrate through the gap between the two second conveying belts from bottom to top to detect the membranes on the membrane feeding station. According to the conveying device, the membrane is detected through the gap between the two second conveying belts from bottom to top through the detection mechanism, and whether the membrane is located at the preset position of the membrane feeding station or not is automatically detected.

The application belongs to the technical field of tick feeding, and particularly relates to a double-control-temperature tick in-vitro membrane feeding system, which comprises a blood bin used for storing blood sources and having a composite film as a bottom surface; a tick breeding chamber used for accommodating ticks and installed at the bottom of the blood bin, wherein the tick breeding chamber covers the composite film; a double-control-temperature system comprising a heating module and a temperature sensor installed at the side of the blood bin, and a heating module and a temperature sensor inside the tick breeding chamber, wherein the double-control-temperature system adjusts the temperature difference between the blood source in the blood bin and the environment temperature in the tick breeding chamber to be 10 DEG - 12 DEG; and a constant-humidity spraying device connected to the tick breeding chamber and used for adjusting the humidity of the environment in the tick breeding chamber. The application meets the temperature difference between two sides of membrane feeding and humidity adjustment, simulates a real environment, and utilizes gravity to simulate a host blood pressure difference, thereby facilitating tick blood sucking.

The invention provides a mixed pentane separation membrane performance test system and a mixed pentane separation membrane performance test method. The performance test system for the mixed pentane separation membrane comprises a feeding unit, a vaporization unit, a membrane test unit and a component detection unit which are communicated in sequence, and can effectively ensure that a feed liquid state at a membrane feeding side is a steam state, so that the damage of an unvaporized liquid pentane feed liquid to the structure of the separation membrane is avoided.

Provided herein are systems and methods for treating a wastewater stream. In one embodiment, a wastewater stream is treated using a settling tank, a membrane feed tank, and at least one filtration unit.

The utility model relates to the technical field of membrane feeding devices, discloses a membrane feeding device in a flexible circuit board pressing process, and solves the problems that the pressing quality of a membrane is influenced and the use effect is poor during pressing due to the fact that the conventional membrane feeding device cannot clean dust on the surface of the membrane during feeding. The device comprises a supporting table, supporting legs are fixedly installed at the four corners of the bottom of the supporting table, a mounting frame is fixedly installed at one end of the top of the supporting table, two driving rollers are installed in the mounting frame, a mounting frame is fixedly installed at the other end of the top of the supporting table, and a placing rod is rotatably installed on the upper portion of one side of the mounting frame; two supporting rods are fixedly installed on one side of the top of the supporting table, a supporting plate is fixedly installed between the tops of the two supporting rods, and an air cylinder is fixedly installed on one side of the supporting plate; according to the membrane feeding device, dust attached to the surface of a membrane can be effectively cleaned during feeding, and the situation that the pressing quality of the membrane is affected by the dust during pressing is avoided.

The invention provides a system for improving the integration efficiency of membrane protein in artificially synthesized cells. The system comprises a DNA template for coding target membrane protein, amphiphilic molecules combined with a phospholipid membrane and a 3'untranslated region of an mRNA sequence, and an in-vitro transcription translation synthesis system, wherein the DNA template for coding the target membrane protein comprises a positioning sequence region template, the positioning sequence region template is transcribed to obtain a positioning sequence, the positioning sequence is located in a 3'untranslated region of an mRNA sequence obtained by transcription of the DNA template for coding the target membrane protein, and the positioning sequence is specifically combined with the amphiphilic molecule. The invention also provides a method for improving the integration efficiency of the membrane protein in the artificially synthesized cell. The method comprises the step of preparing the artificially synthesized cell by using the system disclosed by the invention through a reverse emulsification method. According to the system and the method, efficient membrane protein synthesis and membrane protein integrated membrane feeding can be realized, and the stability and the functionality of the membrane protein in the artificially synthesized cell are improved.

The invention discloses an immersed membrane biological system process for reinjection treatment of produced water of an ultra-low permeable layer, relates to the field of technologies, and solves the problems that the membrane flux attenuation is fast, the treatment cost is high and the water quality cannot stably reach the standard in the prior art. A water outlet pipeline of the natural settling tank (1) is connected with the compound microorganism reaction tank (2); a water outlet pipeline of the biological reaction tank is in lifting connection with a rotational flow air flotation device (4) through an air flotation booster pump (3); a water outlet pipeline of the rotational flow air flotation device is connected to a membrane front circulating water tank (6); a water outlet line of the circulating water tank is connected with an immersed membrane component device (8) through a membrane feeding pump (7); a water production pipeline of the immersed membrane component device is connected with an external conveying and backwashing water tank (10) through a suction pump (9), and an external water conveying pipeline of the external conveying and backwashing water tank is connected with an external conveying pump. According to the system, a composite microorganism and membrane coupling treatment technology and a membrane pollution control technology are utilized, and a high-efficiency and low-cost immersed membrane biological system process is developed.

A membrane system (1) for separating a feed gas stream (F) at low pressure into a retentate gas stream (R) and a permeate (P) stream, the system (1) comprising a housing (2) and a plurality of membrane cartridges (3) having a first end (3a) and an opposite second end (3b), wherein the housing (2) comprises a first intermediate wall (4) and a second intermediate wall (5) dividing an inner space of the housing (2) into a feed subspace (21), a retentate subspace (22) and a permeate subspace (23), wherein the membrane system (1) comprises in an outer wall of the housing (2) a feed gas stream inlet (11) fluidly connected to the feed subspace (21), a retentate gas stream outlet (12) fluidly connected to the retentate subspace (22), and a permeate gas stream outlet (13) fluidly connected to the permeate subspace (23); wherein each membrane cartridge (3) comprises a cartridge housing (30), a gas selective membrane, a feed inlet (31), a retentate outlet (32) and a permeate outlet (33), wherein each membrane cartridge (3) of the plurality of membrane cartridges (3) is releasably insertable into a mounted position between the first intermediate wall (4) and the second intermediate wall (5) such that the feed inlet (31) of each membrane cartridge (3) opens towards the feed subspace (21), the permeate outlet (33) of each membrane cartridge (3) opens towards the permeate subspace (22) and the retentate outlet (32) of each membrane cartridge (3) opens towards the retentate subspace (23), wherein the first end (3a) of each of the plurality of membrane cartridges (3) is arranged at the first intermediate wall (4) and the second end (3b) of each of the plurality of membrane cartridges (3) is arranged at the second intermediate wall (5); wherein the volume of the feed subspace (21) is at least one third of the total volume of the housing (2).

This invention relates to the field of sampling and detection equipment technology, specifically a slice-type automatic aerosol radiation dose rate detector. The detector includes a frame on which a slitting and conveying device, a filter cartridge storage device, and a detection device are mounted. A sealing device is also mounted on the frame, positioned between the filter cartridge storage device and the detection device along the filter membrane detection path. The sealing device includes a membrane feeding device and a sample pressing device. The membrane feeding device holds several membranes, and the slitting and conveying device transports at least one membrane and places it on the sample to be sealed, forming a sample to be pressed. The sample pressing device includes a pressing mechanism; the slitting and conveying device transports the sample to be pressed to the pressing mechanism, where it is pressed to form a sealed sample. The slitting and conveying device then transports the sealed sample to the detection device for testing. This invention enables automatic membrane sealing and pressing of the filter membrane contained in the filter cartridge, facilitating separation of the pressing head from the filter membrane, reducing adhesion, lowering labor costs, and improving work efficiency.