855 results about "Demister" patented technology

The invention discloses a control method for aerosol in flue gas desulfurization by utilizing an ammonia method and a master desulfurizing tower, and the control method is characterized in that flue gas enters the master desulfurizing tower after being cooled to the relative humidity of 90 to 100% and the temperature of 60 to 80 DEG C through high-pressure waster mist or prewashing temperature reduction; the generation of the aerosol particles in the desulfurization by utilizing the ammonia method is reduced by optimizing desulfurization operating conditions, and the formed aerosol particles are condensed to grow big and are partially washed to be eliminated through a desulfurizing solution; an appropriate amount of steam is injected into the saturated flue gas through desulfurizing and eliminating the partial aerosol particles; the oversaturated water vapor environment required by the secondary condensation and the growth of the aerosol particles is established on the top of the master desulfurizing tower; and the condensed and the grown aerosol particles are eliminated through a high-efficiency demister. The invention combines the formation mechanism of the aerosol in the flue gas desulfurization by utilizing the ammonia method; and the formation of the aerosol is reduced by optimizing the process conditions of the desulfurization operation and the elimination of the formed aerosol is promoted by utilizing a steam phase change principle at the same time so that the exhaust problem of the aerosol in the flue gas desulfurization by utilizing the ammonia method can be effectively solved.

The invention relates to a method and a device for removing fine particles in high-humidity gas fume. The high-humidity gas fume enters a gas fume pipe; saturated steam under normal pressure is injected into the gas fume pipe and is premixed with the high-humidity gas fume; the high-humidity gas fume and the saturated steam under normal pressure enters a bombarding current phase change chamber main body and bombard each other so as to form a highly-turbulent bombardment area with highest concentration of fine particles in the center of the bombarding current phase change chamber main body and promote the saturated steam to be condensed on the surfaces of the fine particles; meanwhile, the fine particles of which the surfaces are condensed with water films collide each other to be coagulated to ensure that the granularity of the fine particles is increased further; and the coagulated and grown fine particles are removed by an efficient demister arranged at the gas fume outlet at the upper end of the bombarding current phase change chamber main body. The device consists of the gas fume pipe, the bombarding current phase change chamber main body, the efficient demister, a demister washing water system, and a washing waste liquor storage tank; a vapor nozzle is arranged in the gas fume pipe; and the efficient demister is arranged at the gas fume outlet at the upper end of the bombarding current phase change chamber main body.

An extremely high water cut oil-gas-water three phase flow water removing device, which includes a mist eliminator (8), a fluid rectifier (7), a liquid collection chamber (2), a fluid directing duct (5), an inlet connection pipe section (10), a gas outlet connection pipe section (9), a mixture liquid exit connection pipe section (4), a free water outlet connection pipe section (1). Its function is to effectively remove most of the free water from the high water cut oil-air-water three phase flow mixture liquid. An extremely high water cut oil-air-water three phase flow measurement apparatus and a measurement method using the water removing device are also disclosed.

The invention discloses a method for recovering CO from a high-pressure acetic acid tail gas produced by carbonylation through a membrane process and a device thereof. The tail gas is treated by three steps, that is, pretreatment, membrane separation and gas compression: the tail gas that passes a gas washing tower, a demister and a combined filter enters a Prisen membrane separator through a heater, the tail gas after the membrane separation enters a compressor, a product gas is recovered and reused, and hydrogen rich gas flows to a torch for burning. In the method, two Prisen membrane systems help control the amount of the feed gas entering a membrane, the product gas and the hydrogen rich gas to reach N2 material balance, ensure the CO recovery rate and achieve the purpose of the long and stable operation of a membrane separation device; and the content of the CO in the final product gas is not less than 91%.

The invention provides a method and a device for synergistically removing fine particles via wet-process flue gas desulfurization, belonging to the technical field of control of fine particulate matters in smoke. The method is characterized by comprising the steps of simply reforming a desulfurization flue in a wet-process desulfurization device, establishing a steam phase change area to ensure that the fine particles condense and grow, establishing a collision condensation area to ensure that the fine particles further condense and grow, effectively capturing the condensed and grown fine particles by using a flue demister and discharging the fine particles out from an outlet of a flue. The device for realizing the method is characterized in that an outlet of an absorption tower is connected with an increasing coupling at the inlet end of the desulfurization flue, the outlet end of the desulfurization flue is connected with a reducing pipe at the outlet of the flue, and a smoke uniform distributor, a steam nozzle, a cleaning process water nozzle, a flue water collection port and the flue demister are arranged in sequence along the flow direction of the smoke. The method and the device have the beneficial effects of saving the equipment investment cost and having good fine particle removal effect through simply reforming the original facility.

The invention discloses a wet desulfurization synergized fine particle and SO3 acid mist removing method and device. The device comprises a flue gas cooling and humidifying device, a wet desulfurization tower, a desulfurization washing solution heat exchanger and a cold water spray layer at the top of the desulfurization tower. The method comprises the following steps: spraying atomized water to the inlet flue duct of the desulfurization tower for cooling and humidifying; performing heat exchange and cooling on the desulfurization washing solution; carrying out once trapping with the desulfurization washing solution when high-humidity flue gas in the desulfurization tower is over saturated in the desulfurization washing process and fine particles and SO3 acid mist are coagulated and grow up; setting a cold water spray layer between the desulfurizing liquid spray layer at the top of the tower and a high-efficient demister, and spraying and cooling with cold water to enable the flue gas to be over saturated once again, coagulating and growing the fine particles and SO3 acid mist once again, and trapping with the high-efficient demister. The method can be used for effectively reinforcing the trapping effect of a wet desulfurization system on fine particles and SO3 acid mist, the desulfurization water consumption can be reduced, and the desulfurization efficiency can be improved. The method and device are suitable for coal-fired boiler with a wet flue gas desulfurization system.

The invention discloses an efficient wet type electrostatic-precipitation desulfurization system and a process thereof. A wet electrostatic precipitator is used for replacing an existing demister in a desulfurization tower. The wet electrostatic precipitator has more powerful capability and higher efficiency in removal of liquid drops and fine dust in flue gas than the demister, so that the wet electrostatic precipitator achieves high environmental protection discharge requirements, guarantees the desulfurization efficiency, and improves the efficiency of a dust removal system of a desulfurization tower, reduces the discharge concentration of dust at an outlet of the desulfurization tower and achieves the latest discharge standard required by the nation. By means of replacing the demister with the wet electrostatic precipitator, the gypsum rain problem is solved, and joint removal of various pollutants is achieved. Further, a water collection disc is added between a desulfurization absorption area and the wet electrostatic precipitator; as the water collection disc collects flushing water of the wet electrostatic precipitator for recycling, the flushing water of the wet electrostatic precipitator is prevented from entering a neutralization oxidation pond of the desulfurization tower directly, and water balance of the whole system is guaranteed.

A marine exhaust gas scrubbing device including an enclosure having a first end and a second end, an exhaust gas inlet, at least one quencher, at least one pre-treater, at least one venturi component including a venturi inlet and a venturi outlet, an impingement basket, at least one demister, an exhaust gas outlet, and a receiver, and a process for scrubbing a marine exhaust gas including cooling the exhaust gas, pre-treating the exhaust gas, washing the exhaust gas, mixing the exhaust gas and exhausting the scrubbed exhaust gas.

The invention relates to a high-efficient demisting device in a wet desulfurization tower, belongs to the technical field of demisters, and aims at solving the problems that an existing demisting device in a wet desulfurization tower is poor in demisting effect and attachments attached to a demister are hard to wash. The demisting device comprises a desulfurization tower body, an alkaline water mixing plant, a spraying device, a folded-plate demister and a spraying drive device; the alkaline water mixing plant is installed on the outer wall of the desulfurization tower body and provides a water source for the spraying device, the spraying device and the folded-plate demister are arranged in the desulfurization tower body from top to bottom, and the folded-plate demister is rotatably installed in the desulfurization tower body. In the high-efficient demisting device in the wet desulfurization tower, 'mist' produced in an absorption tower during wet desulfurization is processed through the spraying device and the folded-plate demister, the demisting process is accelerated, there is no need to arrange a long buffer path for the smoke, and the occupied area of a wet desulfurization system is reduced.

The invention relates to a dedusting and dehumidifying method and equipment thereof for furnace top coal gas of a blast furnace, a converter or a COREX furnace. The method comprises the steps of precooling, self-circulation cooling, re-cooling, demisting and self-circulation heating and rewarming. The equipment comprises a stream guide plate, a precooler, a self-circulation cooler, a first water discharge section, a cooler, a second water discharge section, a demister, a rewarming heater and an outlet stream guide plate which are sequentially arranged between a gas inlet and a gas outlet in a shell. The method and the equipment are used to reduce the emission of dust and the pollution to the air. The heat of gas at the inlet and the cold output of gas at the outlet are recycled so as to repeatedly utilize energy sources and save the energy source consumption; the relative humidity of coal gas treated by the method and the equipment is reduced, thereby the occurrence of condensed water in the process of pipeline conveying is reduced, the corrosion action to the pipeline is reduced and the safety is improved; in addition, the reduction of the relative humidity of the coal gas improves the thermal value of the coal gas.

The invention relates to the technical field of desulfurization and purification treatment for blast furnace gas, and discloses a desulfurization method for blast furnace gas. The desulfurization method comprises the following steps: feeding the blast furnace gas having been subjected to fine dust removal by a bag-type dust remover into a hydrolysis catalytic tower for hydrolysis catalytic desulfurization so as to convert COS in the blast furnace gas into H2S in the hydrolysis catalytic tower under the action of a hydrolysis catalyst; and then allowing the blast furnace gas to pass through a blast furnace gas excess pressure turbine power generation device or a pressure reducing valve, subjecting the blast furnace gas to spraying, cooling and desulfurizing by a desulfurizing and cooling tower, then performing demisting by a demister, conducting purification and then feeding the purified gas into a gas pipe network. The invention also discloses a blast furnace gas desulfurization device. According to the desulfurization method and device for the blast furnace gas, the problem that SO2 of blast furnace gas users, such as a blast furnace hot blast stove, a heating furnace and a heat treatment furnace, exceeds a standard due to high total sulfur content of the blast furnace gas is effectively solved, and cost is low.

The invention relates to a crystallization ammonia process desulfurization and recycling system in an empty tower and a method thereof, which belong to the technical field of environment-friendly equipment. The system comprises a sprinkling desulfurizing tower, a hydrocyclone, a centrifuger, and a vibrating fluidized bed dryer. The method comprises the following steps: hot flue gas enters the middle part of the sprinkling desulfurizing tower, reaches the optimal temperature for ammonia process desulphurization after being cooled by process water sprinkling at the inlet of the tower, and then is subjected to absorption by a sprinkling layer, and finally gets rid of most of free water which is removed by a defogger; clean flue gas is directly sent out by a steel chimney on the top of the sprinkling desulfurizing tower; absorption liquid in a stock tank at the lower part of the tower reaches the state of supersaturation after being subjected to circulating absorption a plurality of times, is forced to be oxidized by oxygen in air and flue gas in the bottom of the tower, and finally produces an ammonium sulphate saturated solution containing a certain amount of solid; the ammonium sulphate saturated solution containing a certain amount of solid is further concentrated by a water cyclone; the concentrated solution forms powder through the centrifuger; and after being dried by the drier, ammonium sulphate products with water content of less than 0.3% can be obtained.

The invention aims to provide an emulsified liquid for processing organic waste gas, a device for processing the organic waste gas and a method for processing the organic waste gas. The emulsified liquid comprises polyoxyethylene sorbitan aliphatic ester or sorbitan aliphatic ester or a mixture of polyoxyethylene sorbitan aliphatic ester and orbitan aliphatic ester according to any ratio. The device for processing the organic waste gas comprises an emulsified liquid packing absorbing tower, a circulating spray system, an oil-water separator, a demister and an induced draft fan, wherein the emulsified liquid packing absorbing tower is successively connected with the circulating spray system and the oil-water separator; the emulsified liquid packing absorbing tower is also successively connected with the demister and the induced draft fan, the emulsified liquid packing absorbing tower and the circulating spray system can form a circulation loop, and the circulating spray system and the oil-water separator can form the circulation loop. The device for processing the organic waste gas provided by the invention has the advantages that the structure is simple, the use is convenient, the efficiency of removing the organic waste gas by the emulsified liquid can achieve 90%-99%, and meanwhile, the dust particulate matter removing efficiency is high.

The invention belongs to the technical field of removal of hydrogen sulfide contained in gases, and particularly relates to a device and a process for removing the hydrogen sulfide contained in an industrial gas, aiming at providing high-efficiency rotating packed bed equipment applicable to occasions with large flux and high treatment requirements. The device comprises a rotating packed bed and a regeneration system, wherein the liquid inlet pipe of the rotating packed bed is connected with a barren solution tank through a barren solution pump, and an air inlet pipe is connected with a sulfurous gas; the liquid discharge pipe of the rotating packed bed is connected with a pregnant solution tank, and an air outlet pipe is connected with a demister. The process comprises the following steps: preparing a desulfurizing solution; respectively introducing the desulfurizing solution and the gas which contains the hydrogen sulfide into the rotating packed bed; introducing a liquid discharged from the rotating packed bed into the regeneration system for recovery. The device and the process which are disclosed by the invention have the advantages of good desulfurization effect, small occupied area, high mass transfer efficiency, small liquid circulating amount, small gas-phase pressure drop, low operation cost and convenience for start and stop. According to the invention, the integral process system can be stable within a few minutes.

The invention relates to a hazardous waste incineration smoke further denitrification purification system. The hazardous waste incineration smoke further denitrification purification system comprisesa rotary kiln, an insulation cavity, a secondary combustion chamber, an urea solution spraying gun, a waste heat boiler system, a smoke quench tower, a deacidification tower, a dust collector, a denitrification reactor, an active carbon fixed bed, a draught fan, a tubular GGH heat exchanger, a desulphurization tower, a demist device, a chimney and a water sealing slag scraper machine for collecting ash; a first smoke inlet of the tubular GGH heat exchanger is communicated with the active carbon fixed bed, a first smoke outlet of the tubular GGH heat exchanger is communicated with a smoke inletof the desulphurization tower, a smoke outlet of the desulphurization tower is communicated with a second smoke inlet of the tubular GGH heat exchanger, and a second smoke outlet of the tubular GGH heat exchanger is communicated with the chimney. By adopting the hazardous waste incineration smoke further denitrification purification system, not only can the lost heat of the rotary kiln be effectively recovered, but also the smoke is ensured enabledto reach the emission standard; and moreover, the ultralow NOx emission can be realized, the system structure is reasonable, the technology is reliable, cleanliness and high efficiency can be realized, and the hazardous waste incineration smoke further denitrification purification system is suitable for being popularized to use in the city withdense population and in the rural garbage recycling industry.

The invention discloses an electric demisting method and device for capturing and collecting fine particulate matters in flue gas generated after wet desulphurization. Flue gas generated after wet desulphurization enters a flue gas activating chamber, surfactant liquid mist is sprayed in the flue gas activating chamber, fine particulate matters in the flue gas collide with the liquid mist and aggregate to become bigger, the aggregated fine particulate matters are electrically charged and moved towards a dust collection polar through an electric field formed by an electric demister, and the fine particulate matters are condensed into a liquid film and attached to the dust collection polar. The electric demisting device for implementing the method comprises an electric demisting device body, wherein an air flow distribution device, an inlet chamber, a demisting chamber, an exhaust chamber, an air outlet and the flue gas activating chamber connected with the air flow distribution device are arranged on the electric demisting device. Compared with the prior art, the method and the device can improve the capturing capability of an electric dedusting device to fine particulate matters, effectively reduces the height of equipment and occupied area, prolongs the service life of the equipment, and lowers the maintenance cost of the equipment.

The present invention discloses a cement plant desulfurization and denitrification waste gas treatment apparatus, which comprises: a cylindrical body with two closed ends; a mist spraying showering part which comprises a mist spraying part and a showering part, wherein the mist spraying part is arranged on the cylinder body, and the showering part is arranged on the mist spraying part; a turbulentflow part which comprises a rotating rod, turbulent flow blades, a demister and a rotating power piece, wherein the rotating rod and the rotating power piece are both arranged on the cylinder body, and the turbulent flow blades and the demister are both arranged on the rotating rod; a preliminary desulfurization part which comprises a gas transmission fixing frame, a gas transmission pipe, a gastransmission nozzle and a waste gas input pipe, wherein the gas transmission fixing frame is arranged on the cylinder body, the gas transmission pipe is arranged on the gas transmission fixing frame,the gas transmission nozzle is arranged on the gas transmission pipe, and the waste gas input pipe is connected with the gas transmission pipe. The cement plant desulfurization and denitrification waste gas treatment apparatus is reasonable in structural design, and can perform multiple different forms of desulfurization treatment on waste gas; and the waste gas is converted into a turbulent flowstate from a laminar flow state, so that the waste gas can be uniformly distributed in the cylinder body, and the desulfurization efficiency can be effectively improved.

The invention relates to the technical field of devices for producing large-grained ammonium sulfate, in particular to an integrated forced circulation crystallizing evaporator for producing large-grained ammonium sulfate and a device. The integrated forced circulation crystallizing evaporator comprises a first evaporator, a second evaporator and a crystallizer, the crystallizer is sequentially connected with a first conical portion, a cylinder portion and a second conical portion from top to bottom, a wire mesh demister is arranged at a joint of the first conical portion and the cylinder portion, the crystallizer is divided into a vaporizing chamber and a crystallizing chamber by the wire mesh demister, the taper of the second conical portion is larger than that of the first conical portion, a first 'Y'-shaped flow guide pipe is arranged in the crystallizer, extends out the top end of the crystallizer and is connected with material outlets of the first evaporator and the second evaporator through two second 'Y'-shaped flow guide pipes, a first rotational flow device and a second rotational flow device are sequentially connected on the outside of the first flow guide pipe below the wire mesh demister from top to bottom, so that the integrated forced circulation crystallizing evaporator for producing the large-grained ammonium sulfate is small in occupied area, and the layering effect of different crystal sizes is good.

The invention discloses an impact flow washing device for purifying raw gas and a purifying process. An impact flow washing tower of the device is internally and sequentially provided with a gas-liquid impact tower, a tower plate, a process condensate water sprayer and a composite board demister from bottom to top. The process includes the steps of equally dividing raw gas containing ash and vapor into two streams, spraying a mixture of washing water and raw gas into a reducing acceleration pipe, forming coaxial impact in the impact tower through atomizing nozzles, conducting primary purification in the impact tower to remove most of ash in the raw gas, and making raw gas directly enter a washing tower after raw gas gets out of the impact tower to be secondarily purified. The impact flow dust removal technology and the washing tower are organically combined, and the dust removal efficiency is effectively improved while washing water consumption is lowered; the impact tower is placed in the washing tower, and the occupied space of the technological process is reduced; dark water in the impact tower and dark water in the washing tower are independent of each other, chilling water and washing water are cleaner, and therefore it is ensured that a gas gasifying system more efficiently and stably runs.

The invention belongs to the field of air pollution control and relates to an internal cooling fiber vibrating wire grid type centrifugal demister Which solves the problems of low demister efficiencyand high investment cost, and further improves the demisting economy and efficiency. A honeycomb structure is formed inside a first cylinder; each demisting unit comprises a first bearing, a second bearing, a first fiber grid impeller, a second fiber grid impeller and a second cylinder; the input end of a cooling water pipe is connected with the output end of a gas distributing pipe; the input endof the gas distributing pipe is communicated with the output end of a gas inlet pipe; the output end of the cooling water pipe is communicated with the input end of a gas collection pipeline; the output end of the gas collection pipeline is communicated with a gas outlet pipe; and fiber grids are arranged on the first fiber grid impeller and the second fiber grid impeller. The grid type centrifugal demister disclosed by the invention is simple in overall structure, reliable in principle, capable of saving energy and reducing emission, low in investment cost and high in demisting efficiency, and has excellent economic benefits and wide market prospects.

A dust treatment device comprises a dust sucking device, a dust removing box and a spraying dust removing tower; the dust sucking device is connected with the dust removing box through an air feeding tube; the dust removing box is connected with the spraying dust removing tower through an air delivery tube; a high-pressure air device is arranged at the upper end of the inside of the dust removing box; an air outlet is formed in the lower end of the high-pressure air device; a settling tank is arranged at the lower end of the high-pressure air device; a water draining tube is arranged at the lower end of the settling tank; the bottom of the dust removing box is supported by a plurality of supporting racks at the left end and the right end of the dust removing box; a demister is arranged at the upper end of the inside of the spraying dust removing tower; a circulating water tank is arranged at the lower end of the inside of the spraying dust removing tower; a spraying device with a plurality of spraying nozzles is arranged at the lower end of the demister, and is connected with the circulating water tank through a circulating water tube; and the circulating water tube is provided with a circulating water pump. The dust treatment device has the advantages of high dust removing efficiency, good purifying effect, simple structure, low manufacturing cost, high continuous operation capability and long service time.

The invention discloses a water-saving and energy-saving ammonia desulphurization ultra-clean discharge system and process capable of preventing ammonia from escaping from aerosol. The system comprises a slurry disturbance system, a cooling concentration crystallization system, a sulfur oxide absorption system, an ammonia capture system, a washing purification system and a crystal particle enlarging system, circulating spray liquid of the desulfurizing tower from bottom to top adopts solutions with different components, and the concentration gradient is decreased progressively so that the desulfurizing efficiency is effectively improved, escape of aerosol and ammonia is avoided, and the phenomena of trailing and falling of ammonia-process desulfurized flue gas are eliminated. Different technologies such as multi-stage cyclone coupling, packing, a demister, an efficient cyclone water film dust collector and a wire mesh demister are combined, optimization of the distribution condition offlue gas in the tower is achieved, the retention reaction time of the flue gas is prolonged, further coagulation of fine particles and trapping of slurry droplets are promoted, the flue gas is washedthrough low-temperature washing liquid of the external cooling tower, cooperative removal of the fine particles is achieved, and ultra-clean emission is achieved.

The invention relates to a device and a method for eliminating colored smoke plume generated during wet desulphurization. The device comprises a wet desulfurization absorption tower, a wash-cooling system and a smoke heat exchange system. By arranging the wash-cooling system between a spray layer of a traditional wet desulfurization absorption tower and a defogger, smoke in the wet desulfurizationabsorption tower is washed and cooled, temperature of clean smoke at an outlet of the wet desulfurization absorption tower is lowered, and humidity of saturated smoke is decreased. By arranging the smoke heat exchange system at an inlet and the outlet of the wet desulfurization absorption tower, clean smoke at the outlet of the wet desulfurization absorption tower is heated by heat of raw smoke generated before desulphurization, temperature of exhaust smoke is enabled to be 10 DEG C higher than a dew point temperature, and no forming of colored smoke plume or gypsum rain is ensured. The device and the method for eliminating the colored smoke plume generated during wet desulphurization have the advantages that desulphurization efficiency is increased, the carried fluid in the smoke is reduced, dedusting efficiency of the wet desulfurization absorption tower is increased, exhaust smoke humidity is decreased, and the exhaust smoke is free from colored smoke plume or gypsum rain.