154results about How to "Improve oxygen removal effect" patented technology

Multilayered plastic bottles are disclosed having oxygen scavenging capacity sufficient to maintain substantially zero or near zero (depending on product requirements) presence of oxygen in the bottle cavity for the planned shelf life of the bottled product under specified storage conditions. The bottles feature a layer comprised of oxygen scavenger copolyester and may be used for bottling beer and other products requiring nearly total absence of oxygen for the duration of the target product shelf life.

A novel water treatment method for boiler feedwater of the invention comprises the following steps: sterilization, that is adding liquid chlorine, sodium hypochlorite or stabilized chlorine dioxide into a raw water tank, controlling the residual chlorine amount in water to be 0.2-0.5 mg/L; filtration, that is adding a polyaluminium chloride coagulant before a multimedium filter with an amount of 10-20 mg/L, controlling the water turbidity of the ultrafiltration feedwater to be not more than 0.1 NTU and the SDI to be not more than 3; adding a reducing agent of sodium bisulfite before ultrafiltration with an adding amount of 3-5 mg/L; reverse osmosis, that is performing desalination treatment by a reverse osmosis membrane device, continuously adding a PTP-0100 scale inhibitor before a security filter with an adding amount of 3-5 mg/L; continuously adding a Micro Treat BIO bactericide with an adding amount of 3-5 mg/L; additionally adding cleaning agents of Dimamite and High Flux once a month with an amount of 3-5% of the water amount to be produced; desalination, that is performing desalination by an electrical desalination system (EDI); deoxygenation, that is performing deoxygenation by a vacuum deoxygenator, adding 10-20 microgram/L of deoxidants, controlling the agent residual amount to be 5-20 microgram/L, adding a corrosion-inhibiting pH regulator to control the pH value to be 8.8-9.3.

The invention discloses a denitration catalyst regeneration solution and a preparation method thereof as well as a catalyst regeneration method. The denitration catalyst regeneration solution comprises the following raw material ingredients in parts by weight: 4-6 parts of vanadyl oxalate, 0.08-0.10 part of cerium nitrate, 0.11-0.13 part of lanthanum nitrate, 0.05-0.07 part of copper nitrate, 0.4-0.6 part of silica sol ST-O and 95 parts of deionized water. The catalyst regeneration method comprises the following steps of firstly, evenly mixing vanadyl oxalate and the deionized water; then, feeding cerium nitrate, lanthanum nitrate and copper nitrate into mixed solution, and fully stirring until the mixture is completely dissolved; finally, feeding silica sol ST-O, and continuing to stir until homogeneous phase is obtained; and sequentially carrying out strong scavenging and ultrasonic cleaning on an inactivated denitration catalyst module, soaking the module in cleaning solution for 18-25 minutes, continuing soaking the module in the regeneration solution for 25-40 minutes, taking out the denitration catalyst module and drying. After the denitration catalyst regeneration solution and the catalyst regeneration method are adopted, the activity of the inactivated denitration catalyst can be efficiently recovered, and the temperature range of the catalyst activity is widened.

The invention discloses a novel method for utilizing hydrogen plasma electric arc melting technology to prepare a high-purity rare earth gadolinium elementary substance. The novel method comprises the following steps: firstly, taking high-purity argon gas as a plasma source, smelting a metal sample in a plasma electric arc melting furnace into a regular shape, and removing impurities adhered to the surface of the metal sample; secondly, replacing the argon gas atmosphere, injecting a proper amount of hydrogen into a cavity, generating electric arcs through argon gas and hydrogen both as plasma sources, repeatedly turning over and smelting, and effectively removing oxygen element in elemental gadolinium by utilizing the extremely-strong reducibility of hydrogen atoms at high temperature so as to obtain the high-purity oxygen-free gadolinium finally. The novel method is simple in process, high in preparation speed and remarkable in cleaning effect, can be widely used for preparing high-purity or superhigh-purity rare earth function materials and has a vital application value.

The invention discloses a method for recovering hydrogen from tail gas of chlorate electrolysis. The method comprises the following steps of: removing chlorine and carbon dioxide; removing vapour; removing oxygen, namely, conveying the defoamed gas into a first oxygen remover, enabling hydrogen with oxygen to react to remove most of oxygen, conveying a high-temperature gas at 360-420 DEG C after oxygen removal into a heat exchanger to cool, conveying a cooled gas into a third water-cooling tower, conveying 70% (V/V) hydrogen into a heat exchanger tube to exchange heat with an inter-tube gas, increasing the temperature of the gas to a temperature of greater than 200 DEG C, conveying the gas into a second oxygen remover, reducing the content of oxygen in hydrogen to be less than 0.1%, and finally cooling to a temperature of lower than 30 DEG C via a fourth water-cooling tower and conveying hydrogen in a gas cabinet; and compressing and bottling the qualified hydrogen after being treated. The method disclosed by the invention is simple to operate during startup and shutdown, strong in adaptability, reasonable in process design, high in purity of the recovered hydrogen, higher in quality of hydrogen via secondary oxygen removal, and wider in the application of hydrogen and has an oxygen removal effect.

A viscosity stabilizing agent used for polymer flooding is characterized by comprising components in percentage by mass as follows: 5%-8% of 2-mercapto benzimidazole, 2%-3% of hydroquinone, 10%-15% of sodium thiosulfate, 10%-15% of isothiazolinone, 5%-10% of glutaraldehyde, 6%-10% of isopropanol, 1%-2% of EDTA (ethylene diamine tetraacetic acid), and the balance of water. The viscosity stabilizing agent used for polymer flooding can improve viscosity stability of a polymer flooding system, the viscosity maintaining time is long, so that on the condition of oilfield wastewater preparation, the viscosity of the polymer flooding system maintains stable and is improved in a certain range, the field application effect of the polymer flooding is improved, the effect is remarkable, and the viscosity stabilizing agent is suitable for popularization and application.

The invention discloses a polymer solution sealed deoxygenation device and a method. The polymer solution sealed deoxygenation device comprises a sealed container used for accommodating a polymer solution, wherein the upper part of the sealed container comprises at least two connecting ports including a first connection port and a second connecting port, the lower part is provided with a liquid outlet, and the first connection port is connected with an insert gas generator; a vacuumizing mechanism which is connected with the second connection port, and is used for vacuumizing and deoxidizing of the sealed container and the polymer solution in the sealed container; an oxygen measuring mechanism which is connected with the liquid outlet, and is used for detecting oxygen content of the polymer solution in the sealed container. The polymer solution sealed deoxygenation device can be used for removing oxygen in the polymer solution preferably, measuring oxygen content of the polymer solution accurately, and realizing accurate, convenient, and high efficiency evaluation on the long-term stability of the polymer solution.

The invention provides a refrigerator, which comprises an inner container, and a storage compartment is formed inside; a storage container arranged in the storage compartment; a first oxygen removal assembly arranged on the storage container and provided with a first oxygen consumption part which faces the interior of the storage container and is used for consuming oxygen in the storage container through an electrochemical reaction, and a first electrolysis part which faces the exterior of the storage container and is used for electrolyzing water vapor outside the storage container; and a water supplementing device arranged close to the storage container and used for providing the water vapor required by the electrochemical reaction for the first electrolysis part. The water supplementing device is arranged on the rear side of the first oxygen removal assembly, so that the water supplementing device provides the water vapor required by the electrochemical reaction for the first electrolysis part, the electrochemical reaction rate of the first oxygen removal assembly can be increased, and the oxygen removal rate is increased; and the water supplementing device is arranged in the storage compartment, the structure is simple, and operation is easy.

The present invention provides a polymer viscosity stabilizer, which comprises, by mass, 40-50% of thiourea, 20-30% of sulfite, 5-10% of EDTA, and the balance of water, wherein the sulfite is sodium sulfite, potassium sulfite or ammonium sulfite, and the polymer viscosity stabilizer is prepared by using a mixing stirring process, and is applied in the polymer flooding tertiary oil recovery process. With the polymer viscosity stabilizer, viscosity stability of the sewage polymer solution can be improved, the viscosity stabilizing time is long, the seepage resistance of the sewage polymer solution can be increased, the rheology control capability of the sewage polymer solution can be improved, and the polymer flooding oil increase effect can be increased.

The invention provides a composite boiler water treatment agent composition integrating corrosion inhibition, scale inhibition, deoxygenization and condensed water corrosion inhibition. The composite boiler water treatment agent composition is prepared from, by mass, an organic reductant 4-30%, polyphosphate 2-15%, amine 5-50%, a catalyst 0.01-2% and deionized water 50-80%. The composite boiler water treatment agent composition can be used for the boiler of any pressure system, has the effects of corrosion inhibition, scale inhibition, deoxygenization and condensed water corrosion inhibition and does not affect the quality of steam.

The invention includes a exhaust device, a sparge pipeline, a deflector and a deaerator set in the exhaust device. The deaerator comprises a heating steam passage, a upper sprinkling screen, a lower sprinkling screen, a stuffing layer disposed between the upper sprinkling screen and the lower sprinkling screen and a condensation water pipeline. The water jet of the condensation water pipeline is set above the upper sprinkling screen. The air jet of the heating steam passage is set below the lower sprinkling screen.

The invention discloses an SPE (Solid Polymer Electrolyte) electrolysis system used for tritium concentration. The electrolysis system comprises an electrolytic tank system, a tritiated water supply system, a gas-liquid separator, a tritiated water collection system, a hydrogen drying system, an oxygen drying system, a hydrogen collection system, a product oxygen collection and storage tank, a condensation system and a detection and control system. The invention further provides a realization method for the SPE electrolysis system used for tritium concentration. The electrolysis system can meet all process demands of aqueous phase tritium concentration, wherein the processes include a tritiated water circulating concentration process, a hydrogen leakage emergency power-off process, a molecular sieve drying bed continuous treatment process and the like. Meanwhile, due to the tritiated water circulating concentration, the tritiated water concentration can be quantitatively controlled, so that the tritium concentration efficiency is greatly improved and a large amount of tritium-poor hydrogen is obtained.

The invention discloses an internal type headless high-pressure deaerator. The internal type headless high-pressure deaerator comprises a barrel body, wherein an internal barrel body, a water-spraying inner barrel, a re-boiler, a steam mixing outer barrel, a heating steam tube, a re-boiling heating tube and a deaerated water outlet are mounted inside the barrel body; a water feeding tube, a water return tube and a gas exhaust tube are arranged on a barrel body surrounded by the internal barrel body; and a spraying device and a filler layer are further arranged inside the internal barrel body from top to bottom. The invention further provides a deaeration method which separates oxygen in water through a tertiary device. Compared with a conventional system with a deaeration head, the internal type headless high-pressure deaerator has the beneficial effects of reducing equipment height, greatly reducing civil engineering cost, reducing lift of a water inlet pump, achieving the energy-saving effect, being more complete in deaeration, and being capable of achieving effect of 0.05 ppm, and being applicable when a steam temperature ranges from 104 DEG C to 190 DEG C. The internal type headless high-pressure deaerator is simple and compact in structure, and is convenient to mount and maintain.

The purpose of the present invention is to provide a two-part curable oxygen-absorbable resin composition which has all of oxygen absorbability, adhesion properties and a cohesive force. The present invention provides a two-part curable oxygen-absorbable resin composition comprising: a main component which comprises a polyester polyol containing tetrahydrophthalic acid or a derivative thereof or tetrahydrophthalic acid anhydride or a derivative thereof as a raw material; and an aliphatic and/or alicyclic isocyanate curing agent component.

The invention belongs to the field of pharmaceutical preparations, and relates to a phloroglucinol injection and a preparation method thereof. The phloroglucinol injection comprises the following mainactive pharmaceutical ingredients: phloroglucinol, trimethylphloroglucinol, an osmotic pressure regulator sodium chloride and water for injection. The preparation method is mainly characterized in that carbon dioxide is used as a stabilizer, so that the use of an antioxidant is avoided, the pH value of the solution is reduced, the stability of the solution is improved, the prescription process issimplified, and the phloroglucinol injection with stable content, slow impurity growth and long validity period is obtained.

The invention provides a novel thermodynamic vacuum deaeration system. The novel thermodynamic vacuum deaeration system comprises a softened water tank (10), a softened water pump (20), a coal economizer (40), a deaerator water feeding pump (30), a deaerator (50) and a vacuum ejector (60); a vacuum ejection pipeline for carrying out pressure reduction on the deaerator is connected to the softenedwater tank (10), the softened water pump (20), the vacuum ejector (60) and the deaerator (50); and a water injection pipeline for injecting water into the deaerator is connected to the softened watertank (10), the deaerator water feeding pump (30), the coal economizer (40) and the deaerator (50). The thermodynamic vacuum deaeration system has the advantages of being good in energy saving performance, high in working efficiency, good in waste heat recovery function and the like.

The invention relates to the field of crude oil recovery, and discloses a polymer having a surface activity function, and a preparation method and application thereof. The polymer contains a structural unit A, a structural unit B and a structural unit C, wherein the structural unit A is a structural unit having a structure shown in Formula (1); the structural unit B is a structural unit having a structure shown in Formula (2); and the structural unit C is a structural unit having a structure shown in Formula (3). According to the invention, a polymerizable monomer having surface activity is introduced onto a macromolecular chain, and the ether chain structure determines that the synthesized copolymer has high hydrolysis resistance and thermal stability, thereby improving the aging resistance of the polymer; and meanwhile, the surface tension and interfacial tension of the polymer solution are greatly reduced, so that the polymer has favorable surface activity and fine compatibilization, emulsification and oil washing capabilities, thereby improving the crude oil recovery factor. The Formula (1), the Formula (2) and the Formula (3) are shown in the specification.