12 results about "P-acetaminophenol" patented technology

The utility model discloses an acetaminophen refined mother liquor recovery processing device which comprises a rack, a barrel shell is installed in the rack, filter screens are arranged in the barrel shell at intervals, the filter screens are clamped in a screen ring, a protruding tongue of the screen ring is rotationally connected to the barrel shell through a hinged support, an arc groove is formed in the side wall of one side of the barrel shell in a penetrating mode, and an arc plate is arranged on the outer side of the arc groove. The arc plate is connected to the outer curved surface of the net ring through an arc pad, the arc pad is clamped in the arc groove, a pressing rod mechanism is arranged on the outer side of the arc plate, and a seat plate of the pressing rod mechanism is connected to the outer wall of the barrel shell; the device is simple in structure, reasonable in design and novel and unique in thought, the adsorption layer is placed on the filter screen, the baffle ring limits the adsorption layer (particulate matter, a pad and the like), the adsorption layer adsorbs and filters mother liquor, the arc plate shields the arc groove in the barrel shell, and the arc pad on the inner side of the arc plate seals the arc groove, so that the mother liquor entering the barrel shell is prevented from leaking, and the service life of the mother liquor is prolonged. In addition, the arc plate is pressed and contacted through the pressing rod mechanism, so that the arc plate is prevented from accidentally driving the net ring and the filter net to rotate out.

The utility model relates to the technical field of centrifugal equipment, in particular to a centrifugal machine for separating acetaminophen mother liquor, which comprises a centrifugal machine body, the centrifugal machine body comprises an outer barrel and a centrifugal filter barrel, a cleaning mechanism is arranged at the upper end of the inner side of the outer barrel and comprises a second motor, and the lower end of the second motor is connected with a supporting shaft. Two first mounting holes which are vertically distributed are formed in the supporting shaft, a first supporting rod and a second supporting rod are arranged in the two first mounting holes in a penetrating mode correspondingly, and a first connecting block and a second connecting block are arranged at one end of the first supporting rod and one end of the second supporting rod correspondingly; the cleaning mechanism in the centrifugal machine can be suitable for cleaning various centrifugal filter barrels with different diameters and depths and outer barrels on the outer sides of the centrifugal filter barrels, the application range of the cleaning mechanism is widened, the utilization rate of the cleaning mechanism is increased, and the cleaning efficiency of the centrifugal machine is improved. The limitation of the cleaning mechanism is reduced.

This invention discloses a method for degrading acetaminophen in water using persulfate activated by an axially oxygen-coordinated iron single-atom catalyst. The method uses the axially oxygen-coordinated iron single-atom catalyst as an activator to activate persulfate and degrade acetaminophen in water. The axially oxygen-coordinated iron single-atom catalyst comprises a carbon substrate and iron single atoms, with the iron single atoms anchored in the carbon substrate in a Fe-N4O1 coordination structure. In this invention, the axially oxygen-coordinated iron single-atom catalyst is used to activate persulfate, which can efficiently activate persulfate and achieve highly efficient removal of acetaminophen from water. Complete removal of acetaminophen from water can be achieved within 2 minutes. This method has significant advantages such as simple process, easy operation, high treatment efficiency, good removal effect, wide applicability, and no risk of secondary pollution, demonstrating extremely high practical value and broad application prospects.

The utility model discloses a suction filter for acetaminophen production, which relates to the field of chemical equipment and comprises a suction filtration tank, a suction filtration pipe and a liquid outlet are arranged at the lower end of the suction filtration tank, a material receiving cylinder is arranged on the outer side of the upper end of the suction filtration tank, a discharging device is rotatably connected in the material receiving cylinder, and a radial driving device is arranged on the upper end face of the material receiving cylinder. A cleaning plate device is arranged on the driving device, a liquid collecting tank is fixedly connected in the suction filtration tank and comprises a liquid collecting cylinder, a liquid guide conical cylinder is fixedly connected to the lower end of the liquid collecting cylinder, a filtering device is arranged in the liquid collecting cylinder and comprises a filtering circular plate device and an air cylinder device, and the filtering circular plate device is in sliding sealing connection with the inner wall of the liquid collecting cylinder; the air cylinder device is fixedly installed on the liquid guiding conical barrel, the filtering circular plate device is connected with the air cylinder device through a telescopic rod, the air cylinder device drives the filtering circular plate device to move up and down on the inner wall of the liquid collecting tank through the telescopic rod, the device can automatically clean, discharge and collect filtered and separated medicine residue waste, and the working efficiency of the device is improved.

The invention discloses a persulfate advanced oxidation system, application of the persulfate advanced oxidation system in degradation of acetaminophen and an application method of the persulfate advanced oxidation system. The persulfate advanced oxidation system comprises P-Fe and V2-MXene and PMS. Treating a to-be-treated object containing acetaminophen by adopting a system; the method comprises the following steps: adding the P-Fe and V2-MXene into the p-acetaminophen-containing wastewater, and adding PMS (Polymethyl Sulfonate) for reaction. According to the method, P-Fe and V2-MXene is adopted as a catalyst to activate PMS, Fe and V2-MXene have a strong synergistic effect, PMS can be efficiently activated, metal leaching is reduced through surface phosphorization, secondary pollution is prevented, the method has efficient PMS activation capacity, low energy consumption, low cost and anti-interference capacity, metal leaching is well reduced through surface phosphorization, and the method has a great application prospect in practical application and is suitable for industrial production. The paracetamol can be degraded in a short time, and the treatment requirement of paracetamol-containing sewage is met.

The utility model provides a crushing device for acetaminophen raw material production, and relates to the technical field of acetaminophen raw material production, the crushing device comprises a support and a shell, the upper surface of the shell is provided with a feed hopper, the lower surface of the shell is provided with a discharge port, and the interior of the shell is rotatably connected with a crushing roller A and a crushing roller B. The screening plate is arranged in the shell, raw materials obtained after preliminary smashing can be screened out, the raw materials which do not meet the smashing requirement are screened out, the motor B is started to drive the threaded rod to rotate, the threaded rod is in threaded connection with the moving block, and the moving block is in sliding connection with the sliding rod; the movable block can drive the crushing roller to horizontally move, then raw materials which do not meet the crushing requirement can be crushed again, workers do not need to manually take out the raw materials which are not completely crushed to manually add the raw materials for secondary crushing, manpower is saved, and meanwhile the crushing quality and the flexibility and crushing effect of the device are improved.

This invention discloses a method using a single-clinic phase W 18 O 49 A method for co-catalyzing Fenton degradation of acetaminophen in water, including the use of monoclinic W 18 O 49 A catalyst and a Fenton-like system are added to water containing acetaminophen to catalytically degrade the acetaminophen in the water. The Fenton-like system is composed of hydrogen peroxide and iron ions, where the iron ions are either ferric (Fe3+) or a mixture of ferric (Fe3+) and ferrous (Fe2+) ions. The monoclinic phase W... 18 O 49 The catalyst is prepared by heat treatment of a mixture of tungsten chloride and anhydrous ethanol. The method of this invention has advantages such as simple process, convenient operation, high processing efficiency, high oxidation activity, good reusability, and environmental friendliness.

The invention discloses a preparation method of a photocatalyst ZnxNi (1-x) Fe2O4 (at) BiOBr based on a semiconductor heterojunction and application of the photocatalyst ZnxNi (1-x) Fe2O4 (at) BiOBr in peroxymonosulfate (PMS) activation, and the photocatalyst ZnxNi (1-x) Fe2O4 (at) BiOBr is used for efficiently degrading organic pollutants in water, especially acetaminophen (PAM). The heterojunction photocatalyst is synthesized through a two-step hydrothermal method, and the cation composition, the microstructure and the heterojunction proportion of the heterojunction photocatalyst can be adjusted. The influence of different compositions and conditions on the PAM degradation effect is studied in detail, and the ratio of ZnxNi1-xFe2O4 to BiOBr is optimized, so that the optimal catalytic degradation effect is achieved. Under the optimal condition, the Zn0. 8Ni0. 2Fe2O4 (at) BiOBr photocatalyst can be used for completely removing PAM (Polyacrylamide) within 100 minutes, and the removal rate of 64% is also shown under the dark condition. In addition, the catalyst has good reusability, and still keeps efficient performance after five times of continuous treatment. According to the invention, a new understanding is provided for photo-assisted PMS activation in water environment pollution treatment, and an efficient and recyclable heterogeneous catalyst is provided for degradation of organic pollutants in water.

This invention discloses a micro-etching roughening solution, its preparation method, and its application, relating to the field of printed circuit board manufacturing technology. The micro-etching roughening solution comprises the following components: 60-100 g / L sulfuric acid, 30-50 g / L hydrogen peroxide, 5-40 g / L copper ions, 2-10 g / L photoresist, 1-5 g / L stabilizer, and the balance being deionized water. The photoresist is an aqueous solution prepared from 3-chloro-6-mercaptopyridazine, glutathione, and acetaminophen, with a mass ratio of 2:(1-3):(1-5). The photoresist used in this invention can form a uniform mesh-like chemical film on the copper surface. On the one hand, it can reduce the micro-etching rate of the copper surface; on the other hand, even with low micro-etching amount and shallow micro-etching depth, it can roughen the copper surface into a fine honeycomb structure, ensuring high adhesion between the copper surface and the film.

The invention relates to aromatic liquid crystal polyester resin, a preparation method thereof and a composite liquid crystal polymer material. The aromatic liquid crystal polyester resin is prepared from the following raw materials in parts by mole: 55 to 65 parts of p-hydroxybenzoic acid, 1 to 3 parts of 2-hydroxy-6-naphthoic acid, 14 to 16 parts of diphenol, 17 to 21 parts of phthalic acid and 3 to 5 parts of acetaminophen. The aromatic liquid crystal polyester resin has high mechanical strength, high fluidity, good toughness and high thermal deformation temperature, so that the aromatic liquid crystal polyester resin can be used for manufacturing precise electronic parts such as electronic connectors and the like, and can be well suitable for surface assembly technologies such as reflow soldering and the like.

The utility model discloses an efficient decolorizing kettle for acetaminophen production, which relates to the technical field of decolorizing devices and comprises a decolorizing outer cylinder, a decolorizing inner cylinder fixedly connected in the decolorizing outer cylinder, an upper cover fixedly connected to the upper end of the decolorizing inner cylinder, a feed port and a driving device arranged on the upper cover, and a stirring device rotatably connected to the center of the upper cover. The stirring device is located in the inner decolorizing barrel and is in transmission connection with the driving device, a filtering device is connected to the center of the lower end of the inner decolorizing barrel, an electromagnetic valve is arranged at the upper end of the filtering device, the filtering device comprises a filtering barrel, a cleaning and discharging device is slidably connected into the filtering barrel, and an air cylinder device is connected to the lower end of the cleaning and discharging device; the air cylinder device can drive the cleaning and discharging device to move up and down in the filter cylinder, filtering and discharging are efficiently and rapidly carried out, the filter cylinder is cleaned, the decolorizing kettle can be cleaned while stirring is carried out, filtering and discharging are efficiently and rapidly carried out, and the working efficiency of equipment is improved.

The invention relates to a visible-light-responsive quinoline bond-linked covalent organic framework photocatalyst, a preparation method thereof and application of the visible-light-responsive quinoline bond-linked covalent organic framework photocatalyst to degradation of organic pollutants in water. According to the photocatalyst, 2, 4, 6-tri (4-aminophenyl)-1, 3, 5-triazine, 2, 5-dibromo terephthalaldehyde and a styrene derivative are used as raw materials, a quinoline connection structure is constructed through a one-pot multi-component Bovlov reaction, and conversion from a dynamic imine bond to a stable quinoline unit is achieved. By introducing substituents with different electronic effects, the electronic polarity and the hydrophilic-hydrophobic property of the covalent organic framework are regulated and controlled, so that the photocatalytic performance of the covalent organic framework is optimized. The obtained hydrophilic CN-QN-COF has the degradation efficiency of more than 95% on 10 mg / L acetaminophen solution within 10 minutes under the irradiation of visible light, and has good repeatability and stability. The material disclosed by the invention is suitable for rapid photocatalytic purification of various organic pollutants in a water body, and has a good environmental application prospect.