60results about How to "Improve oxygen removal efficiency" patented technology

The invention provides refrigeration and freezing equipment, comprising a box body, a door body, and a gas regulating membrane assembly, wherein a storage space is limited in the box body; a storage container is arranged in the storage space; a fresh-keeping space is limited in the storage container; the door body is arranged on the front surface of the box body so as to seal the storage space; the gas regulating membrane assembly is installed on the storage container and the surrounding space of the gas regulating membrane assembly communicates with the fresh-keeping space; the gas regulatingmembrane assembly comprises a proton exchange membrane and a hydrogen production device; the gas regulating membrane assembly is configured to make hydrogen generated by the hydrogen production device flow to the proton exchange membrane and react with oxygen in the fresh-keeping space after being decomposed into hydrogen ions and electrons so as to reduce the oxygen concentration in the fresh-keeping space, and the hydrogen production device generates hydrogen by electrolyzing a potassium hydroxide solution. The refrigeration and freezing equipment provided by the invention can effectively reduce the whole energy consumption of the deoxidization process, rapidly reduce the oxygen concentration in the fresh-keeping space, and greatly improve the deoxidization efficiency.

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 invention belongs to the technical field of additive manufacturing equipment, and relates to a selective laser melting system. The selective laser melting system comprises selective laser meltingequipment, a protective gas output device and a gas circulating device, wherein the selective laser melting equipment comprises a forming cavity, a pressure meter and an oxygen transmitter; the gas circulating device comprises a shell, a vacuumizing assembly and a gas circulating filtering assembly; the forming cavity and the gas circulating filtering assembly forms a first gas path, the protective gas output device, the forming cavity and the vacuumizing assembly form a second gas path, the protective gas output device and the gas circulating filter assembly form a third gas path, each gas path comprises a plurality of connecting pieces, and the first gas path, the second gas path and the third gas path are interconnected through a common part of the connecting pieces. According to the selective laser melting system, the oxygen removal efficiency in the forming material inside the forming cavity can be improved, and the overall oxygen removal speed is accelerated; in addition, the invention further provides a gas circulating device and a printing method applied to the system

The invention relates to a sewage deoxidizing process and polymer injection method for enhancing tertiary oil recovery effect and improving the viscosity of polymer solution made up by oil sewage. Low-temperature desorptive deoxygenization process is adopted in reinjection deoxygenization, which comprises cycling deoxygenization water tank, deoxygenization water pump and desorptive deoxygenization in turn. The polymer injection process for improving the polymer solution made up by oil rejecting water comprises sewage deoxygenization process, polymer dissolution, mixed preparing sewage and injecting process of high-pressure water pump. PAM is applied in polymer solution made up by sewage. PAM is added from drug solution tank by metering pump. After mixed the polymer reinjecting solution is prepared, which is injected into stratum for oil recovery by high-pressure water pump. The test result shows that the desorptive deoxygenization technology treat the oil water, the serious degradation of polymer generated by oxygen active substance in sewage is eliminated, the viscosity of jetting solution is improved and the oil recovery effect of polymer is enhanced. The method is provided with simple operation and big practical applicable value. It is especially suitable for reinjection after the treatment for waste water with high oxygen content in oil. The running cost is low and the equipment is simple. There is no secondary pollution.

The invention provides a refrigerator. The refrigerator comprises an inner container, an air supply fan, a storage container and an oxygen removal assembly; a storage chamber as well as an evaporator cavity and an air supply duct which are located on the back side of the storage chamber and used for containing an evaporator is formed in the inner container; the air supply fan is arranged in the air supply duct and is configured to promote formation of air flow circulating among the evaporator cavity, the air supply duct and the evaporator cavity; the storage container is arranged in the storage chamber; the oxygen removal assembly is arranged above the storage container and is provided with an electrolysis part which faces the outside of the storage container and is used for electrolyzing water vapor outside the storage container through electrochemical reaction and an oxygen consumption part which faces the inside of the storage container and is used for consuming oxygen through electrochemical reaction; and the air supply fan is further configured to continuously operate at the first preset rotating speed after a refrigeration system of the refrigerator completes refrigeration to supplement the storage chamber with the water vapor, so that enough water vapor can be provided for the oxygen removal assembly to serve as a reactant, and the electrolytic oxygen removal efficiency can be improved.

The invention discloses a silicon powder surface deoxidizing method, and belongs to technical field of powder surface treatment. The silicon powder surface deoxidizing method is characterized by improving silicon powder surface wetting ability by adding a neutral solvent of absolute ethyl alcohol into hydrofluoric acid and controlling the proportion and the concentration of the absolute ethyl alcohol, and promoting H+, HF2- and H2F2 and the like to rapidly diffuse towards silicon atoms. The silicon powder deoxidizing technology includes: preparing needed deoxidizing liquid by using hydrogen fluoride (HF), the absolute ethyl alcohol and deionized water according to a proportion, placing the deoxidizing liquid in a water bath with a constant temperature from 25 DEG C to 60 DEG C, fetching out a proper amount of silicon powder to be processed, then placing the silicon powder into the deoxidizing liquid, ceaselessly stirring for 15-60 minutes, using deionized water to wash and filter the silicon powder for 3-8 times through a vacuum filter, drying the silicon powder at a temperature of 25-70 DEG C in a vacuum, and immediately sealing the silicon powder for preservation in the vacuum. The silicon powder surface deoxidizing method has the advantages of being high in deoxidizing efficiency, and simultaneously the deoxidizing liquid contains no hazardous substance such as sulfuric acid, causes no damage on a silicon substrate, and furthermore the powder after being processed is good in uniformity and dispersibility, simple in technology and easy to control.

The invention discloses a method for removing oxygen in chlorination reaction gas. The specific technological process includes that the chlorination reaction gas and second matter enter a reactor, the oxygen in the chlorination reaction gas and the second matter spontaneously react or a reaction happens under the outer field initiating condition to generate third matter, and third matter plays no role on a chlorination reaction or the generated role is not as remarkable as the role on the oxygen. The second matter is gas containing any one or two or more of sulfur dioxide, nitric oxide, hydrogen sulfide and the like; and the second matter can also be composed of any one or two or more of iron, sodium sulfite, an oxime type deoxidant, an amine type deoxidant, quinoline compounds, erythorbic acid and sodium salt thereof, and the like. The method for removing the oxygen in the chlorination reaction gas has the beneficial effects of being simple in technological process, high in deoxidizing efficiency, good in deoxidizing effect and the like, and is especially suitable for removing oxygen in chlorination reaction gas in the process of preparing chlorinated high polymer resin through a gas-solid phase method.

The invention provides a refrigerator, which comprises an inner container, a storage compartment is formed in the inner container, and an air supply duct is formed on the rear side of the storage compartment; a storage container arranged in the storage compartment; an oxygen removal assembly arranged on the storage container and provided with an oxygen consumption part facing the interior of the storage container and used for consuming oxygen through an electrochemical reaction and an electrolysis part facing the exterior of the storage container and used for electrolyzing water vapor outside the storage container through the electrochemical reaction; a moisture-permeable assembly arranged on the storage container, the moisture-permeable assembly and the deoxidizing assembly are arranged at an interval, and the moisture-permeable assembly is configured to allow the water vapor in the storage container to seep out; and an air inducing opening for supplying air to the moisture-permeable assembly is arranged on the air supply duct, and the air inducing opening is configured to allow airflow in the air supply duct to enter the storage compartment and flow through the face, back to the interior of the storage container, of the moisture-permeable assembly in a moisture-permeable mode, so that a dry environment is formed outside the storage container, and the moisture-permeable efficiency of the moisture-permeable assembly is improved. and therefore, the phenomenon of condensation or water dripping in the storage container is reduced or avoided.

The invention discloses a cement kiln pure lowtemperature waste heat generator.One end of a preheater is provided with a rotary kiln, one end of the rotary kiln is provided with a cooling machine, oneend of the cooling machine is fixedly connected with a waste gas pipe of a pit head, the middle of the waste gas pipe of the pit head is provided with a settling box, and inclined blocks are arrangedon both sides of the bottom end of the settling box. Bafflesare installed on both sides of the top of the inclined block, and a cellar tail exhaust pipe is fixedly connected with one end of a cellarhead exhaust pipe, and a mixed exhaust pipe is fixedly connected with one end of the cellar tail exhaust pipe, and a generator body is installed at one end of the mixed exhaust pipe. The top of the generator body is provided with a tank body, the inside of the tank body is provided with a steam generating chamber, and the bottom of the tank body is equipped with a dust exhausting bucket. Accordingto the a cement kiln pure lowtemperature waste heat generator, the bottom end of the bafflesareprovided with a plurality of elastic bumpswhich play a certain buffering role and can weaken the impactof waste gas from the pit head containing clinker particles on the baffles in the flow process, is simple and practical, service life of the baffles are prolonged, and later maintenance cost is reduced.

The invention discloses a system and a method for realizing the high-flow water replenishing and the high-efficiency deoxidizing of an industrial heat supply unit. The system comprises a boiler, a high pressure cylinder, an intermediate pressure cylinder, a low pressure cylinder and an external deoxidization device, wherein boiler exhaust steam is connected with an inlet of the high pressure cylinder; an inlet of the external deoxidization device is connected with a supplementary water booster pump; an inlet of the supplementary water booster pump is connected with a desalting water tank; an outlet of the external deoxidization device is connected with the booster pump; and an outlet of the booster pump is divided into two paths: one path is connected to an outlet of a second low pressureheater through a first valve group, and the other path is connected to an outlet of a third low pressure heater through a second valve group. According to the system and the method for realizing the high-flow water replenishing and the high-efficiency deoxidizing of the industrial heat supply unit provided by the invention, the external deoxidization device adopts an integrated structure, so thatthe requirements on water replenishing and deoxidizing after the high-flow industrial steam supply of a coal-fired generating unit are met; a host computer can keep high deoxidizing efficiency in a wide load change range section; and the condensation water temperature is increased, an inlet of one class low pressure heater can be flexibly accessed, and the gradient high-efficiency utilization of energy is realized.

The invention discloses a multi-stage heat exchange structure for a deaerator, and belongs to the field of thermal power generation. The multi-stage heat exchange structure comprises a water distributor, the water distributor comprises a water partition plate, wherein water distribution holes are densely distributed in the surface of the water partition plate, the cross section of each water distribution hole is in a two-curve shape, an inverted-cone-shaped gas collecting cover surrounding the water distribution holes is arranged at the bottom of each water distribution hole, each gas collecting cover is matched with the lower part of the corresponding water distribution hole to form a gas gathering cavity, a gas jet assembly is arranged in each gas gathering cavity and comprises a first gas jet disc and a second gas jet disc arranged on the first gas jet disc through a connecting rod, and an upward semi-annular steam flow along each water distribution hole is formed by using the corresponding gas jet disc, so that heating is conducted on deoxidized water entering each water distribution hole. The core of the multi-stage heat exchange structure is the water distribution holes in the water partition plate in a water distribution tank and the gas jet assembly arranged in each water distribution hole, and the special structure of each gas jet assembly is matched with the shape andstructure of the corresponding water distribution hole to form multiple heating and deaeration of the deoxidized water in the water distribution tank, so that the deaeration efficiency and the deaeration effect are improved.

The invention discloses a towerless deaerator. The towerless deaerator comprises a deoxidization water tank; a water inlet, a vapor inlet and an oxygen exhaustion port are formed in the top of the deoxidization water tank; a water inlet pipe is mounted at the water inlet; a water inlet nozzle is mounted in the water inlet pipe in the deoxidization water tank; a vapor distribution mechanism is mounted in the deoxidization water tank; a height adjustment mechanism of the vapor distribution mechanism is arranged at the top of the deoxidization water tank; the vapor distribution mechanism comprises a vapor inlet pipe connected with the vapor inlet in a sealing manner; a vapor distribution pipe is fixed at the bottom end of the vapor inlet pipe; vapor branch pipes are mounted on the steam distribution pipe; and a rotation spray head is mounted at the outer end of each vapor branch pipe. According to the towerless deaerator, the height adjustment mechanism can be used for adjusting the height of the whole vapor distribution mechanism according to water level condition in the deoxidization water tank, so that vapor can be reasonably distributed to everywhere in the deoxidization water tank; the rotation spray head can be used for driving the water in the deoxidization water tank to move circularly while spraying out vapor, so that the deoxidization effect of the water at everywhere isimproved, the generation of incrustation can be avoided and the deoxidization effect is high.