70 results about "Gas inhalation" patented technology

A fan unit which in use forms part of a gases supply unit, the gases supply unit suitable for use as part of a system for providing heated humidified gases to a user, the fan unit having a casing that has an inlet aperture and an outlet passage, the outlet passage including an exit aperture, the fan unit also including a fan which is located inside the casing and which is adapted for connection to a motor to drive rotation of the fan in use, the fan drawing gases into the casing via the inlet aperture, and forcing these gases out of the casing via the outlet passage as a gases stream, the outlet passage further including at least one bypass vent hole independent of the exit aperture and arranged at an angle to the path of the gases stream through the outlet passage.

Some embodiments provide a centripetal air or gas cleaning apparatus for removing particulates from air or gas. The apparatus comprises an inlet, housing, impeller, a clean air outlet, and a particulate outlet. The housing has an inner conical surface. The impeller's rotation creates negative pressure towards the inlet that intakes particulate-pervaded air or gas into the housing. The rotation also induces an accelerating force that throws the particulate-pervaded air or gas against the outer walls of the housing. Here, the particulates separate from the air or gas, penetrate a high-pressure zone, and are ejected through the particulate outlet located in the high-pressure zone. The air or gas, having less inertia, deflects away from the high-pressure zone where it is then subjected to a centripetal force that drives the air or gas towards the center of the housing behind the impeller where it is ejected through the clean air outlet.

Provided is a vertical annealing furnace, in which a heating zone and a soaking zone are communicated with each other in the upper part of the furnace, in which a part of the furnace other than the communicated parts is separated by a dividing wall, in which part of the furnace gas is suctioned into a refiner having a deoxidation device and a dehumidification device which is placed outside the furnace to decrease the dew point of the gas by removing oxygen and moisture from the gas and such that the resultant gas having a decreased dew point is returned into the furnace, in which a gas suction port into the refiner is located in the lower part of the connection part between the soaking zone and the cooling zone and in which one or more gas suction ports are located in the parts of the heating zone and / or the soaking zone outside of an area within 6 m in the vertical direction and 3 m in the longitudinal direction of the furnace from the steel strip entrance in the lower part of the heating zone.

The invention relates to a medical nitric oxide gas supply system and a medical nitric oxide air supply method, belongs to the technical field of medical instruments and solves the problems in an existing nitric oxide gas supply system that feedback regulation and control on output of a nitric oxide gas supply system are difficult to realize by taking the concentration of nitric oxide required tobe inhaled by a user as a target and the treatment cost is high. The medical nitric oxide gas supply system comprises a nitric oxide gas generation subsystem and a gas concentration monitoring subsystem, wherein the two subsystems are communicated with a gas inhalation pipeline; the nitric oxide gas generation subsystem is used for producing nitric oxide gas; the gas concentration monitoring subsystem is used for monitoring the concentration of the nitric oxide and nitrogen dioxide which are actually inhaled by the user and feeding back and controlling the concentration of the nitric oxide gasoutput by the nitric oxide generation subsystem by taking the monitoring value as a target. The invention also provides a medical nitric oxide gas supply method. The medical nitric oxide gas supply system disclosed by the invention can be combined with various oxygen uptake equipment and mechanical ventilation equipment for use, the concentration of the nitric oxide actually inhaled by the user can be monitored and regulated in real time, reaching a set target range.

The invention discloses a high-pressure and low-frequency autooscillation pulse gas-liquid jet nozzle capable of being applied to the fields of jet cutting, crushing, washing, mixing, pipeline delivery and the like. As an upper nozzle and a lower nozzle in the invention are both in high-precision clearance fit with a cavity body, defects, such as low coaxiality, caused by cavity length adjustment during the spiral transmission of a traditional method are avoided. In work, a connecting base capable of rotating drives the cavity body and the lower nozzle to rotate, thereby realizing continuous cavity length adjustment. When cavity length reaches a preset value, the connecting base can be fixed through tightening a cylindrical screw. At the same time, low-frequency modulation is realized on high-pressure jet through automatic gas inhalation, and accurate control over jet oscillation frequency is further finished in a low-frequency range through the combined action of gas flow and cavity length. The modulation scheme is much better than a traditional mechanical jet modulation method and can greatly improve jet impact and effective acting range.

The invention discloses a method and a device for detecting a gas concentration. The method comprises the following steps: S1, a to-be-detected workpiece is placed in sealed space; S2, a plurality of gas suction points are distributed outside the to-be-detected workpiece, and each gas suction point is numbered to mark the gas suction point position; S3, vacuum pumping is carried out on the sealed space, and the vacuum pressure can be larger than 100 Pa; S4, a tracing gas is filled inside the to-be-detected workpiece; S5, a gas sensor arranged outside the sealed space carries out gas concentration detection on the suction gas via the gas suction points; and S6, when the gas sensor detects the concentration of the tracing gas at a certain gas suction point reaches a preset leakage value, the leakage position of the to-be-detected workpiece is determined according to the number of the gas suction point. By adopting the above technical scheme of the invention, detection on the gas concentration and the gas leakage can be quickly realized at a low cost, automatic detection is also realized, manual intervention is not needed, and the leakage point can be basically positioned.

The invention provides a portable disaster-preventing emergent escape oxygen supply protective system. The portable disaster-preventing emergent escape oxygen supply protective system is mainly composed of a quick oxygen preparing portion, a flow control and conveying connection portion and a mask. When the system is used, clean oxygen required by people for survival can be provided, toxic and harmful gas in an environment is isolated, and a respiratory system and a visual system of the people are protected. Accordingly, when the emergency situation occurs, thought and action retardance caused by oxygen deficit or toxic and harmful gas inhalation and / or toxic smog and dust inhalation and the like is avoided, and asphyxia coma or death is avoided. The system has the advantages of being stable in performance, safe in storage, suitable for storage, convenient to carry, simple in operation and convenient to use when being not used. In addition, the system has the advantages of being unique in design, convenient to process, simple in structure, low in cost, and easy to popularize, can be arranged in a place where potential safety hazards of fire disasters and the toxic and harmful gas exist and can remarkably improve survival probability of the people under the situation of disaster occurrence.

The invention relates to an oxygenation device, which comprises: a flow guide cover, wherein a water flow channel is arranged in the flow guide cover, a water inlet and a water outlet forming fluid communication with the water flow channel are formed in the flow guide cover, the water inlet is located on the upstream of the water outlet along a water flow path, and the water flow channel is gradually shrunk along the water flow path; a gas guide pipe vertically arranged and fixed relative to the flow guide cover, wherein the upper end of the gas guide pipe has a gas inlet, and a gas outlet isformed at the lower end of the gas guide pipe; and a mixing channel positioned at the downstream of the flow guide cover along the water flow, wherein the upstream port of the mixing channel is connected with the water outlet of the flow guide cover and is in fluid communication with the water outlet of the flow guide cover, the mixing channel is communicated with the gas outlet of the gas guide pipe to suck gas in the gas guide pipe into the mixing channel, and the mixing channel is further provided with a spraying nozzle for spraying out water mixed with the gas inside the mixing channel. Compared with the oxygenation device in the prior art, the oxygenation device of the invention does not require a water pump, a motor and other additional power sources in an oxygenation process so as to save energy and cost.

The invention discloses an application of a dry curcumin nano-powder inhalant in treatment of acute lung injury. The dry curcumin nano-powder inhalant is prepared from a curcumin nanometer administration system. The dosage form of the curcumin nanometer administration system is selected from a liposome, a nano-particle, a nano-emulsion and a micro-emulsion. The curcumin nanometer administration system with or without auxiliary materials is dried to form a solid powder, and the solid powder is mixed with a carrier to obtain the dry curcumin nano-powder inhalant. The dry curcumin nano-powder inhalant has the advantages of stable drugs, easy entrance of the deep portion of lung tissues, targeted positioning, carrying and use convenience, and benefiting for the treatment of the acute lung injury. The dry curcumin nano-powder inhalant is used for treating acute lung injury caused by infection, shock, smoking, wounds, poisoning, irritating gas inhalation, radiation, high oxygen and low oxygen. Irritating gases comprise phosgene, diphosgene, triphosgene, chlorine, nitrogen oxide, formaldehyde, dimethyl sulfate, hydrogen chloride, hydrogen bromide, hydrogen fluoride, ammonia, ozone and sulfur dioxide.

The invention discloses an outburst pre-warning device and method of a coal mine driving face based on infrared ray. The outburst pre-warning device comprises a coal roadway left wall and a coal roadway right wall, an infrared transmitter (1) is installed on the coal roadway left wall, an infrared receiver (2) is installed on the coal roadway right wall, and the infrared transmitter (1) and the infrared receiver (2) are oppositely installed; the power supply ends of the infrared transmitter (1) and the infrared receiver (2) are connected with the power supply output end of an explosion-proof storage battery device (5) through an explosion-proof cable (9); and the infrared receiver (2) is connected with the control end of an explosion-proof acoustooptic alarm device (6). According to the outburst warming device, a series of accidents caused by coal (rock) burying, gas-inhalation suffocating and outburst due to short reaction time and insufficient evacuation time when outburst occurs inan existing technology driving face are solved; and the technical problem that workers in roadways are timely informed to reduce reaction time, and thus more evacuation time is strived for is solved.

The invention discloses a refrigerator, including the compressor, condenser, evaporator and the capillary, from the refrigerator evaporator connected to the compressor and the compressor is installed on the entrance-Direct Connect and gas separation of liquid refrigerant and refrigerant state support gas-liquid separator, not the evaporator evaporation of liquid refrigerant through the evaporator connected with the connection of auxiliary gas-liquid separator into the upper temporary auxiliary gas-liquid separator filled with the internal, liquid state to prevent the refrigerant in the compressor to inhalation and to prevent the inflow of connecting state refrigerant in the compressor gas inhalation of high-speed mobile force, which prevent the flow of refrigerant-noise, and prevent the refrigerant cycle refrigerators stopped operating when the large number of liquid refrigerant in the compressor driven compressor, to be inhaled, it can prevent compressor efficiency decreased.

The invention provides a combustible gas detection alarm. The combustible gas detection alarm comprises a gas suction pipeline, a combustible gas detection alarm host, a dustproof filter screen and aharmful gas absorption film, wherein the dustproof filter screen and the harmful gas absorption film are sequentially arranged in the gas suction pipeline, and sucked gas sequentially passes through the dustproof filter screen and the harmful gas absorption film and enters the combustible gas detection alarm host to be detected. By arranging the harmful gas absorption film, corrosive harmful gas can be absorbed, and corrosion damage of detection elements of the detector and catalyst poisoning are avoided, and therefore, the service life of the combustible gas detector is prolonged.

The invention discloses a filtering and sterilizing structure for a pedestal pan and squatting pan deodorizing device. The filtering and sterilizing structure comprises a machine shell, a first draught fan, a second draught fan and a filter element. An inner cavity of the machine shell comprises an air inlet exchange cavity, a front filtering cavity, a first mounting cavity, a rear filtering cavity and an air outlet exchange cavity which are sequentially communicated. The air inlet exchange cavity is provided with an air inlet, the air outlet exchange cavity is provided with an air outlet, andthe first fan is mounted in the air inlet exchange cavity, so that gas is sucked into the air inlet exchange cavity from the air inlet and is discharged to the front filtering cavity; the second fanis arranged in the air outlet exchange cavity and is used for sucking the gas in the rear filtering cavity into the air outlet exchange cavity and exhausting the air from the air outlet; the filter element is mounted in the first mounting cavity and is used for deodorizing and sterilizing gas flowing through the front filtering cavity and the rear filtering cavity. The water tank is used for filtering odor generated during toileting, and meanwhile, air and water in the water tank are subjected to double-bacterium disinfection.

The embodiment of the invention provides a hair drier. The air drier comprises a main body with a gas flow channel; a fan assembly used for outputting power for sucking gas into the gas flow channel; and a heating assembly used for heating airflow in the gas flow channel; wherein the gas flow channel comprises a first circulation section and a second circulation section which are changed in a stepped mode, and a drainage section is arranged between the first circulation section and the second circulation section, so that gas flow flows from the first circulation section to the second circulation section along a drainage path provided by the drainage section. By adopting the technical scheme provided by the embodiment of the invention, an airflow flowing path in the airflow channel is smoother, turbulent flow generated due to the fact that airflow impacts a plane is reduced, and noise reduction is facilitated; and meanwhile, the air volume can be increased.

The invention provides a pediatric atomizer. The pediatric atomizer comprises a connecting valve, a flow speed control mechanism, a mask butt joint mechanism and an air pipe butt joint mechanism. The pediatric atomizer can solve the following problems existing when the pediatric atomizer is used: a, when the atomizer is used, one end of the air pipe needs to be communicated with the atomizer, the other end of the air pipe needs to be communicated with the mask, so that atomized air flows into the mouth and nose of a child, and the air pipe and the mask often need to be used repeatedly and need to be detached for cleaning and disinfection, the two ends of the air pipe are only simply connected, so that the air pipe is disconnected from the mask or the atomizer when the child pokes the air pipe carelessly, atomized gas is lost, and medicine waste is caused; and b, children and babies of different ages have different gas inhalation efficiencies, and the flowing speed of atomized gas cannot be controlled, so that when the inhalation efficiency of the children is low, a large amount of atomized gas is wasted, and the treatment effect is poor.

The invention discloses an ultrasonic multifunctional gas monitoring instrument capable of being held by a hand for inhaling gas for a test. The instrument comprises a shell. A gas inhaler and a sensor shell is arranged at the top of the shell. An ultrasonic sensor is arranged in the inner cavity of the sensor shell. A circuit board is arranged in a gas test cavity. A pre-amplifying circuit, a band pass filter, a secondary amplifying circuit, a frequency mixer and a power drive circuit are sequentially arranged on the circuit board. The pre-amplifying circuit is electrically connected with the ultrasonic sensor. One side of the shell is provided with a headphone interface which is electrically connected with the power drive circuit. An auxiliary handlebar is arranged at the bottom of the shell. A hanging rope is arranged at the bottom of the auxiliary handlebar. The ultrasonic multifunctional gas monitoring instrument is convenient to use, high in sensitivity, convenient to carry and to be placed in hands for the operation, more precise in gas test, and therefore the work efficiency is increased.

The invention discloses a shaft repair device under complex stress conditions. The shaft repair device under complex stress conditions includes a shaft, and further comprises a base, a device housing,a screw transmission rod, an air pump, a first telescopic gas rod, an air jet nozzle, a first motor and the like. The shaft repair device under complex stress conditions has reasonable and simple structure, low production cost and convenient installation. The shaft is placed in a clamp, a supporting tailstock holds up the shaft. The other end is locked through a regulating valve. A lever table does calibration. A second motor drives a sliding block on a screw rod to the specified position. A first air cylinder drives a laser transmitter to move down for cladding processing. A second air cylinder drives a dust collection grinding wheel to grind to the specified size. So the operation is convenient and efficient. Smoke and gas generated during laser cladding are inhaled into a filter box bya first suction fan in a suspended hood provided, adsorbed by an internal filter net and diluted with water injected from a top injector. The shaft repair device prevents environmental pollution by gas emission, while solves the problem that a large amount of harmful smoke and gas produced by laser cladding have bad effect on the health of workers.

The invention provides a handheld expiratory gas collection multi-parameter classification collection mechanism which comprises a gas inhalation section, a gas detection section, a rotary valve and agas collection section which are connected in sequence; an exhaled gas passage can be formed between the gas detection section and the rotary valve, a sensor for detecting state parameters of exhaledgas is arranged on the gas detection section, the main processor is also arranged and used for controlling the rotary valve to rotate on the basis of the state parameters of the exhaled gas so as to change the on-off state of the gas passage, and when the gas passage is smooth, the exhaled gas is collected; and when the gas passage is blocked, the inhaled gas is not collected. According to the invention, the sensor transmits the state parameters of the detected inhaled gas to the main processor for judgment; compared with existing electromagnetic valve control, the mechanism has the advantagesthat the overall weight is light, miniaturization and modularization are enough, and the gas sampling device is suitable for being widely popularized in the technical field of gas sampling.

There is described herein a system for determining the interaction between a test atmosphere and a simulated respiratory tract, said system comprising: (a) a first pump comprising: (i) a chamber configured for containing a first volume of gas comprising a test atmosphere; (ii) a first port adapted for receiving and outputting gas and comprising a valve for regulating the flow of gas through the first port, said valve being moveable between open and closed positions, wherein in the open position said valve is openable towards a test atmosphere or surrounding air; (iii) a second port adapted for outputting and receiving gas and comprising a valve for regulating the flow of gas through the second port, said valve being moveable between open and closed positions; (iv) a piston plate in the chamber, said piston plate comprising one or more apertures for the uptake or inflow of gas into the chamber wherein one or more, or each, of the apertures include a valve that is movable between open and closed positions and is capable of regulating the uptake or inflow of gas; (b) a second pump comprising: (i) a chamber configured for containing a second volume of gas, wherein the first and second volumes of gas are different; (ii) a port adapted for receiving and outputting gas; and (iii) a motor for controlling the operation of the second pump; (c) a connecting structure operable to transmit the gas from the first pump into the second pump; and (d) one or more openings in the first pump or the second pump or the walls of the connecting structure or a combination of two or more thereof, said openings being capable of receiving a module for containing a cell culture medium or for monitoring conditions in the chamber or for gas sampling or for gas characterisation.

The invention relates to the technical field of internal mixers, in particular to an internal mixer for EPDM rubber processing. The internal mixer for the EPDM rubber processing comprises a body, a feeding hopper is fixedly connected to the top of the body, a dust suction port is formed in the left side of the feeding hopper, an air suction fan is fixedly connected to the left side of the dust suction port, and a cyclone separator is fixedly connected to the left side of the air suction fan. According to the internal mixer for the EPDM rubber processing, the dust suction port is formed in theleft side of the feeding hopper, dust generated in the feeding hopper and gas with peculiar smell are sucked into the cyclone separator through the air suction fan, dust particles settle into a collecting groove through the cyclone separator, harm of the dust to the human body is reduced, the gas with the peculiar smell upwards enters a filter and is filtered and adsorbed by a coarse filter screen, a fine filter screen and activated carbon in the filter, so that the peculiar smell in the gas is removed, the peculiar smell is prevented from drifting into the external environment, and environmental protection is facilitated.

The invention discloses an epidemic prevention respirator with a waste gas purification function. The epidemic prevention respirator comprises device sliding wheels and a gas guiding pipe, wherein thetop parts of the sliding wheels are provided with a respirator bracket; the right upper side of the respirator bracket is provided with an air inlet; the left side of the air inlet is connected witha waste gas purifier; in addition, the top of the waste gas purifier is connected with an air cylinder; the top of the air cylinder is connected with an adjustable pressure reducing valve; in addition, the top of the adjustable pressure reducing valve is connected with an air storage bag; and the left side in the air storage bag is provided with a monitoring and alarming system. Due to the arrangement of the waste gas purifier, while external gases are sucked in, the device carries out purification processing on gases which are sucked in, a coarse filtering net and a fine filtering net are installed in the waste gas purifier, an efficient catalytic activity carbon core and a HEPA (High Efficiency Particulate Air) filtering core can purify the gases which are sucked in step by step, the purified gases can meet the requirements of a patient, and injuries to patients since gases contain harmful substances can be avoided.

The invention provides a gas suction device, which comprises a cover body and a drainage assembly, the cover body is bent to form a containing cavity, the drainage assembly is contained in the containing cavity, the drainage assembly comprises a main body, a mouth inhalation part and a snuffing part, the mouth inhalation part and the snuffing part are communicated with the main body, the mouth inhalation part can stretch out and draw back and / or bend relative to the main body, the snuffing part can stretch out and draw back and / or bend relative to the main body, and two air outlet parts communicated with the snuffing part are arranged on the snuffing part; when a user wears and uses the gas suction device, the position of the mouth inhalation part is adjusted to enable the mouth inhalation part to be located near the mouth or in the mouth, the position of the snuffing part is adjusted to enable the two gas outlet parts to be located below the two nares or in the two nares respectively, gas provided by an external machine is directly inhaled by the user through the mouth inhalation part and the gas outlet parts, and the concentration of the gas cannot be reduced.

The invention provides preparation of a tea tree essential oil inclusion compound and a gasified inhalation type administration method of the tea tree essential oil inclusion compound. Tea tree essential oil has good broad-spectrum bactericidal bacteriostatic and health care actions and is considered as an important substitute of local antimicrobial agents of antibiotics. According to the preparation and the gasified inhalation type administration method, the tea tree essential oil is included with pure gelatin, administration is carried out by using an electronic heater, the tea tree essential oil inclusion compound can be gasified when a heating temperature exceeds boiling points of compounds in the tea tree essential oil, a sufferer inhales gas into an oral cavity in a smoking manner, the gas enters a respiratory tract, thus, bacteriostatic and bactericidal effects of the tea tree essential oil are exerted, and the tea tree essential oil inclusion compound can be applied to adjuvanttherapy of diseases of respiratory tract infection.

The invention provides a using method of an air respirator. The using method comprises the steps that a user wears the air respirator; in the expiration process, a gas firstly expired by the user every time is introduced into the gas storage chamber to be stored, and the gas later expired by the user every time is exhausted to the atmospheric environment; the first exhaled gas refers to the gas inhaled by the user last time and stored in the trachea and / or oral cavity of the user, and the later exhaled gas refers to the gas inhaled by the user last time and subjected to gas exchange through the lung of the user; and in the inspiration process, the gas exhaled by the user last time and stored in the gas storage chamber is inhaled into the lung for reuse. After the scheme is adopted, the effective use time of an existing common air supply bottle filled with fresh air can be prolonged, and the comfort in the use process is good.

A premixing apparatus for mixing air with a fuel gas in order to supply a burner with an air-fuel mixture through a fan, wherein a downstream end of a gas supply passage is connected to a gas suction part disposed in a portion, on an upstream side of the fan, of an air supply passage. The gas supply passage has interposed therein a zero governor for adjusting a secondary gas pressure to an atmospheric pressure. Even if the calorific value of the fuel gas may fluctuate, excess air ratio of the air-fuel mixture is arranged to be maintained at a constant value. The premixing apparatus is provided with: an excess air ratio detection device for detecting an excess air ratio of the air-fuel mixture; and a flow control valve interposed in a portion, on a downstream side of the zero governor, of the gas supply passage. The flow control valve is controlled such that the excess air ratio of the air-fuel mixture detected by the excess air ratio detection device becomes constant.

A method of beautification using hydrogen inhalation capable of promoting improvement of skin condition by regular intake of a high-concentration hydrogen-containing gas air into a body by oral or nasal inhalation under spontaneous breathing, and a high-concentration hydrogen inhalation device appropriate for use in the method of beautification using hydrogen inhalation are provided. According to the method of beautification using hydrogen inhalation, regular oral or nasal inhalation of a high-concentration hydrogen-containing gas generated from hydrogen generating means can non-therapeutically promote improvement of skin condition. In addition, the high-concentration hydrogen inhalation device for use in the method of beautification using hydrogen inhalation includes: hydrogen generating means that generates and releases hydrogen; and hydrogen transporting means that guides the high-concentration hydrogen-containing gas to the nose and mouth of a human body, the high-concentration hydrogen-containing gas being a mixture of hydrogen released from the hydrogen generating means and environmental air.

The invention discloses a gas flowing mixing device, comprising a pipeline sleeving shell, a main gas inlet pipeline and an auxiliary gas inlet pipeline with an auxiliary gas inlet hole in the center. According to the invention, aerodynamics is utilized; that is, the higher a flowing speed is in an area, the lower the air pressure nearby the area is; main air is rapidly discharged, so the air pressure of the main air nearby a discharging part is reduced, auxiliary gas can flow into the discharging part of main gas under the action of atmospheric pressure, and the auxiliary gas and the main gas can be mixed; due to the fact that aerodynamics is utilized by the device, the auxiliary gas does not need other extra energy sources for driving emission, the degree of the requirement for equipment during emission is reduced, and working equipment is simplified; and in addition, by changing the spatial form of the main gas in an ejection area, mixing of external useless gas can be reduced, so more negative pressure acts on the sucked auxiliary gas, the effective utilization rate of the sucked auxiliary gas is improved, the efficiency of the auxiliary gas is improved, and controllability is achieved.

The invention discloses a fluorine-containing waste gas recycling device of a chemical reaction kettle, and relates to the technical field of chemical waste gas. The device comprises a bottom plate, the top of the bottom plate is fixedly connected with a filter box, the device is provided with a first air pump, a cooling sleeve and a spiral pipe, and the air suction end of the first air pump sucksin external air; then the air outlet end of the first air pump discharges outside air into the spiral pipe, then the cold conduction liquid cools the air in the spiral pipe, the air suction end of the second air pump sucks in the air in the spiral pipe, and then the air outlet end of the second air pump discharges the air into the communicating box; gas in the communicating box enters the coolingsleeve through the gas outlet pipe to cool the interior of the ammoniation box, so that heat released during ammoniation reaction of absorption liquid and ammonia water is cooled, the reaction temperature is controlled to be 45 DEG C or below, and the reacted white carbon black is good.