11results about How to "Facilitate desorption" patented technology

The application belongs to the technical field of ship exhaust purification, and particularly relates to a catalyst for decomposing N2O in the exhaust of a ship ammonia internal combustion engine and a preparation method thereof. 3+ By replacing Co ions in the Co3O4 spinel lattice into the lattice, the doping behavior can effectively reduce the number of hydroxyl groups on the surface of the catalyst, significantly weaken the adsorption and combination ability of water molecules, and thus improve the stability of the catalyst in a high-humidity exhaust environment. As an additive, CeO2 uses its oxygen storage capacity to promote the migration and desorption of oxygen species in the reaction, preventing the deactivation of active sites due to oxygen poisoning. The molecular sieve carrier not only provides a highly dispersed surface for the active component to prevent sintering, but also optimizes the adsorption and activation path of N2O and alleviates the poisoning effect of nitrogen-containing intermediate species or impurities in the exhaust on the Co active center during the reaction.

The application belongs to the technical field of solid oxide fuel cell anode catalyst, and particularly relates to a preparation of a multi-doped layered perovskite anode and application thereof in ammonia solid oxide fuel cells. x Ba 1–x Mn 1–y TM y O 3–δ (0.4<=x<=0.6, 0<=y<=0.3, TM=Co, Fe, Cu), the precursor is phase changed under a reducing atmosphere to form a PrBaMn2O 5+δ layered perovskite with rich oxygen vacancies, and the doped transition metal is precipitated in the form of an alloy and anchored on the surface of the layered perovskite. The anode catalyst has a simple synthesis method, low cost, rich and flexible adjustable element composition. The obtained anode catalyst is made into a slurry and then assembled into a solid oxide fuel cell single cell sheet. The solid oxide fuel cell prepared by the application has good power output, electrical conductivity and stability at medium and high temperatures.

This invention belongs to the field of automotive interior material testing technology and discloses a VOC release detection device for automotive interior materials. The device includes: a rotating support frame; a detection chamber assembly rotatably mounted on the rotating support frame, the detection chamber assembly including a main housing and a sealing cover mechanism, which cooperate to form a sealed detection chamber; and a suspension clamping assembly disposed within the detection chamber for clamping the sheet-like test material and physically dividing the detection chamber into a first chamber and a second chamber. This invention constructs a breathing circulation system through an oil-free pump suction mechanism combined with a bellows buffer mechanism, driving gas to reciprocate through the test material. Combined with a rotating inverted structure, gravity is used to accumulate the excitation medium on the material surface. Under the action of alternating airflow, cyclic excitation of fluidized suspension and compaction contact is generated, thereby effectively destroying the gas boundary layer under microscopic hammering and friction, significantly improving the deep VOC desorption rate and detection accuracy.

The application discloses a kind of adsorption tower adsorbate quick desorption and regeneration device, it is related to adsorbate desorption and regeneration technical field;Specifically including bottom plate, the outer wall of the top of bottom plate is fixed with pedestal by bolt, and the outer wall of the top of pedestal is respectively fixed with fixed seat one and fixed seat two by bolt, and the side of fixed seat one is provided with mounting hole, vertically attached mechanism is arranged in mounting hole, the lifting end of vertically attached mechanism is rotatably connected with attached plate, and attached plate and guide strip form sliding fit, the outer wall of both sides of fixed seat one is fixedly connected with slide strip, slide strip side is slidably connected with sliding block, and sliding block is integrally formed with attached plate, the outer wall of the top of pedestal is provided with positioning mechanism, and adsorbent is clamped between two positioning mechanisms.The distance between high-low adjusting heating plate and adsorbent is adjusted, more uniform heat conduction is realized, the phenomenon of local overheating or overcooling is avoided, so as to improve desorption efficiency.

The application discloses a variable-flow type purification device of a hydrogen purification adsorption tower and belongs to the technical field of hydrogen purification. The variable-flow type purification device of the hydrogen purification adsorption tower comprises a tower body, vacuum extraction pipes and gas inlet pipes are connected to the lower outer side of the tower body, an exhaust pipe is connected to the top of the tower body, first and second positioning screens are fixedly arranged on the inner side of the tower body, a fixing seat is fixedly installed on the upper inner side of the tower body, an elastic lifting connection is formed between the upper part of the fixing seat and a movable seat, a sealing plate is also fixedly installed on the upper inner side of the tower body, a rubber cylinder body for adjusting air pressure is fixedly connected between the movable seat and the sealing plate, and a flushing pipe is connected to the outer side of the upper part of the tower body. The variable-flow type purification device of the hydrogen purification adsorption tower can realize real-time regulation and control of the gas flow rate according to the purity of hydrogen purification, ensures the purification efficiency and the purity, and can realize efficient desorption in a combined manner, so that effective adsorption and purification of the adsorption tower are ensured.

This invention relates to the field of coal seam permeability enhancement technology, and discloses a method and apparatus for multiple fracturing of low-permeability coal seams using a combination of electrical pulses and supersaturated ammonium carbonate solution. The method includes: Step 1, drilling a single-hole long borehole in the coal seam, and then arranging an integrated discharge device within the borehole; Step 2, injecting a high-pressure supersaturated ammonium carbonate ion solution into the borehole, using a data monitoring and control center system to monitor the data within the borehole and control the integrated discharge device to release electrical pulses into the high-temperature, high-pressure conductive medium filling the borehole, thereby fracturing the coal seam and releasing gas; Step 3, after the electrical pulses are repeated 6-8 times, the discharge is stopped, the electrolyte solution is drained, and the integrated discharge device is removed. The single-hole long borehole is then connected to a gas extraction pipeline for gas extraction. This invention is safe, highly efficient, and has wider applicability, possessing urgent practical significance and important technical value.

The application discloses a bifunctional electrocatalyst of N and P co-doped porous carbon nanosheet loaded FeCo hollow nanospheres and a preparation method and application thereof. The preparation method is as follows: nitrogen-doped carbon materials are prepared through grinding and mixing and high-temperature pyrolysis. Pluronic F-127, the nitrogen-doped carbon materials, iron nitrate, cobalt nitrate, melamine and o-phenylenediamine are added into an ethanol solution to be mixed, ultrasonically treated and stirred, and after reaction, the solution is evaporated, high-temperature pyrolysis and sodium hypophosphite phosphorization are carried out, and finally the bifunctional electrocatalyst of N and P co-doped porous carbon nanosheet loaded FeCo hollow nanospheres is obtained. The catalyst can exhibit excellent catalytic activity in electrocatalytic oxygen reduction reaction and oxygen evolution reaction, and can be applied in a liquid zinc-air battery.

The present invention relates to an exhaust aftertreatment device for an internal combustion engine (1), having an exhaust pipe configured to deliver exhaust gas blown from the internal combustion engine (1) to at least one component for exhaust aftertreatment, wherein at least an adsorber (3) for temporarily storing hydrocarbons contained in the exhaust gas, a catalytic converter (5) for catalytic aftertreatment of the exhaust gas, an electrically heated catalytic converter (4), and a cracking catalytic converter (2) for cracking long-chain hydrocarbons into short-chain hydrocarbons are arranged in the exhaust pipe.

The application discloses a treatment method for oil-containing copper scrap oil removal and oxidation prevention, and belongs to the technical field of resource treatment of oil-containing metal solid waste, and comprises the following steps: mixing the oil-containing copper scrap and an organic solvent at 180-200 DEG C and under inert atmosphere to obtain a solvent-copper scrap mixed solution, wherein the organic solvent used can generate reducing hydrogen in the mixing process; and distilling the solvent-copper scrap mixed solution under the conditions of inert atmosphere and a vacuum degree of less than or equal to 10 kPa to obtain solid copper scrap. The treatment method utilizes the full effect of the organic solvent on the copper-oil interface under heating and inert pressurized atmosphere, passivates fatty acids and pyrolysis intermediates, so that the oil-containing copper scrap containing synthetic oil can be efficiently deoiled, and the oxidation of the copper scrap can be inhibited.

The application provides a heating and cleaning method for low-grade scheelite rough concentrate, which comprises the following steps: concentrating the scheelite rough concentrate to 50-70wt%, pumping it into a stirring barrel and inputting steam for heating; heating the scheelite rough concentrate to 85-95 DEG C, adding sodium hydroxide, water glass and molecular sieve activated powder in sequence under stirring condition, continuing to heat and stir for 25-45 min, and removing the collector on the surface of calcium-containing gangue minerals; after the removing process is completed, adding normal-temperature water to dilute the scheelite rough concentrate to 20-30wt% and then feeding it into a flotation system, and obtaining scheelite concentrate through one-time roughing, two-time cleaning and three-time scavenging processes; wherein the roughing and cleaning processes adopt a flotation column, and the scavenging process adopts an aerated agitation type flotation machine. The heating and cleaning method for low-grade scheelite rough concentrate provided by the application can ensure the grade of the scheelite concentrate, can take into account the recovery rate of the scheelite ore, and can reduce the production cost.