83results about How to "Reduce liquid to gas ratio" patented technology

The grating type pneumatic triphase fluidizing comprehensive absorption tower includes one housing, one gas inlet channel and gas outlet channel in the top of the tower, one rotary defogging and dewatering unit, one stuffing assembly comprising support boards, hold-down boards and stuffing, one coaxial tubular grating member, one liquid distributor with ring sprinkler pipe, one large caliber reverse sprayer inside the gas inlet channel, and one absorbing slurry pond in the bottom of the tower. It features the special grating structure, the regularly arranged stuffing for cyclic fluidizing, the combined foam absorption and stuffing absorption, etc, and has high absorption efficiency, great gas treating amount and other advantages.

The invention relates to a desulfurization process of flue gas or waste gas by using an external regenerative cycle magnesium sulfate method. The flue gas or the waste gas containing sulfur dioxide is continuously introduced into an absorbing tower, the sulfur dioxide in the flue gas or the waste gas is absorbed by circularly spraying magnesium sulfite absorbing liquid, the magnesium sulfite in the absorbing liquid is transformed into magnesium bisulfite, the sulfur dioxide in the flue gas or the waste gas is removed, the absorbing liquid at the bottom of the absorbing tower is partially or fully shunted to enter in a regeneration system outside the tower and reacts with magnesium oxide slurry for regeneration, the obtained regenerative liquid is filtered, the magnesium sulfite solid is recovered, the filtrate is returned backed to the absorbing tower for cycle absorption and the sulfur dioxide in the flue gas or the waste gas is continuously removed. Due to the adoption of the regeneration process of the absorbing liquid, the pH value of the regeneration reaction end point and the transformation ratio of the agent are increased, the temperature of the absorbing liquid is reduced, the absorbing liquid has the characteristics of high pH value (7.2-8.5), low temperature (38-48 DEG C) and high absorbing capacity and the absorbent activity of the absorbing liquid is effectively improved.

The invention relates to a gas purifying device, which is a vertical drum-type equipment, on the top thereof are arrange a gas collection chamber and a gas outlet, and a liquid collection chamber and a liquid outlet are arranged on the bottom of the gas purifying device, a main chamber is provided between the gas collection chamber and the liquid collection chamber, on the upper part of the main chamber is arranged a mist eliminator, a gas tangential inlet is arranged on the lower part of the main chamber near to the liquid chamber, and an absorption liquid inlet is provided below the mist eliminator. In the main chamber, a group of fluid directors are coaxially arranged in a certain space. The leakage between the fluid directors and the tower inner wall can be reduced maximally via the outer rings on the fluid directors. After the gas to be treated enters the tower via the gas inlet, it rotates and runs up simultaneously. The absorption liquid injected via the liquid inlet has a contact with the rising rotary gas flow, and the absorption liquid can form liquid film, liquid silk, and liquid drop to under turbulent shearing action of swirling flow field, which makes gas and liquid have a sufficient contact; and because of the fast gas-liquid relative velocity and great turbulent degree, the invention is provided with high gas-liquid mass transfer rate and good absorption effect.

The invention relates to a device and a method for depriving sulfur dioxide in flue gas by using ammonia water. The device comprises an absorption tower, wherein the absorption tower comprises a tower bottom pulp chest, spraying layers, packing layers and defrosters from bottom to top; the middle part of the absorption tower is arranged below the spraying layer, a flue gas inlet is arranged above the of the tower bottom pulp chest, and the top of the absorption tower is provided with a flue gas outlet; the tower bottom pulp chest of the absorption tower is internally provided with an aeration pipe; the absorption tower is externally provided with circulating pumps, the number of the circulating pumps accords with the number of layers for the spraying layers, an outlet of each circulating pump is respectively connected with spray throwers in the spraying layer in one layer, the defrosters are arranged in the upper part of the absorption tower and an inlet of each circulating is connected with the tower bottom pulp chest of the absorption tower; and the tower is externally provided with an in-line filter, and filtered unsaturated ammonium sulfate solution is taken as absorption liquids of the packing layers to thoroughly eliminate the possibility of filler scaling block. The method of the invention has the advantages of high deprivation efficiency, low liquid-air ratio, difficult scaling block, low content of ammonium sulfate particles and liquid drops contained in the flue gas from the outlets, good quality of secondary products and the like.

The invention discloses a high efficiency wet-type desulfurization method through ammonia recovery method for oxidation and concentration outside a tower, and a device thereof. The method comprises the following steps: (1) feeding flue gas into the top part of a concentrating tower after dust removal, cooling down and humidifying the flue gas, then feeding the flue gas into a first level venturi section of a desulfurization absorption system to contact atomized ammonia water so as to have the first level absorption reaction, performing the second level and the third level desulfurizations, and discharging the flue gas after the purification; (2) oxidizing the ammonium sulfite solution generated in a desulfurizing tower and then overflowing the ammonium sulfite solution into a mother liquor tank from the top part of an oxidation tank; and (3) pumping the ammonium sulfate solution in the mother liquor tank to the top part of the concentrating tower through a mother liquor pump to perform heat exchange with the high temperature flue gas after atomization so as to form a supersaturated solution containing 3 to 5 percent of crystal, wherein the supersaturated solution flows out of the bottom of the concentrating tower and is pumped into a hydraulic cyclone through a slurry pump to perform the first level solid-liquid separation, and then the clear solution automatically flows into the mother liquor tank; the crystal-liquid mixed solution flowing out of the bottom of the concentrating tower automatically flows into a centrifugal machine to perform the second level solid-liquid separation, and then the clear solution automatically flows into the mother liquor tank; and solid ammonia sulfate is fed into an automatic packaging machine to be packaged and put into storage. The method has simple processes, greatly reduces investment, and can reclaim agricultural level ammonia sulfate and industrial level ammonia sulfate.

The invention relates to a turbine typed turbocharged accelerating flue gas desulfurization dust abatement tower, belonging to the field of gas purification technique, which includes a spray pump tower body, a slurry pump that is arranged on the tower from bottom to top and is connected with a slurry outlet at the bottom of the tower, a roots blower that is connected with a fall trachea and is arranged in a liquid storage district at the bottom in the tower, a spray pump pipe arranged over the liquid storage district, a circulating pump that is connected with and arranged in a circulating pipeline communicated with the spray pump pipe, and a demister arranged on the spray pump pipe; a flue gas inlet, a flue gas outlet and a slurry outlet are arranged on the lateral wall, on the top and at the bottom of the lower part of the spray pump tower body; a disturbance pump and a turbine typed turbocharged accelerating flue gas desulfurization dust abatement system are also included, wherein, the disturbance pump is connected with and arranged in the circulating pipeline communicated with the liquid storage district at the bottom of the tower, and the desulfurization dust abatement apparatus is arranged under the spray pump pipe in the tower and over the flue gas inlet. The invention has the advantages that sufficient connection of gas and liquid can be realized and high speed mass transfer can be carried out within the shortest time, in the smallest space and with the minimum liquid-gas ratio, thus improving high dust abatement and desulfurization efficiency with minimum energy consumption.

The invention discloses a single-tower and double-circulation desulfurization and dust removal device and technology. The device comprises an absorption tower, wherein a tray orifice plate, coarse desulfurization sprayers, a gas redistribution and liquid collection layer, fine desulfurization sprayers and a cyclone demister are arranged in the adsorption tower and located above a flue gas inlet from bottom to top in sequence, the coarse desulfurization sprayers are communicated with a column bottom through a circulating pump, and the fine desulfurization sprayers are externally connected with a slurry feed pump; the gas redistribution and liquid collection layer comprises a liquid collection part and a gas redistribution part, the liquid collection part is fixed on the wall of the adsorption tower and covers a cross section of the adsorption tower completely, the gas redistribution part is located below the liquid collection part, the mounting height of the gas redistribution part is adjustable, the liquid collection part is communicated with an external pipeline, the gas redistribution part comprises a plurality of round pipes which are parallel to each other and are arranged horizontally, and a gas channel is formed by a gap between every two adjacent round pipes. The technology comprises a coarse desulfurization and dust removal stage and a fine desulfurization and dust removal stage, wherein by means of a Venturi bar layer at the fine desulfurization and dust removal stage, liquid-gas contact area can be increased and gas-liquid mass transfer rate is increased.

The invention discloses a porous partition spray equipped desulfurization tower. The lower part in the tower body is a first order absorption zone, the upper part in the tower body is a second order absorption zone, and a porous air flow distribution plate is disposed between the first order absorption zone and the second order absorption zone. The porous air flow distribution plate includes a plate body, the plate body is provided with liquid leakage holes, the plate body is also provided with upward ventilation columns, each ventilation column is equipped with an air cap, the tower body is externally provided with a tower outside slurry pool of the second order absorption zone, and the tower outside slurry pool is connected to the liquid leakage holes through a seal pipeline. According to the porous partition spray equipped desulfurization tower provided by the invention, the first order spray operates at a low Ph value, the second order spray operates at a high Ph value, the energy consumption of a circulating pump is greatly reduced, the porous air flow distribution plate is used for separating the two order absorption systems, the rising flue gas and falling slurry can pass separately, thus ensuring smooth flue gas rising and uniform flue gas distribution. The desulfurization tower is especially suitable for high sulfur coal flue gas desulfurization, can lower the investment and operation cost, and is applicable to current ultra-clean emission reconstruction of power plants.

The invention discloses a synergistic treatment device for dust removing and desulphurization. The synergistic treatment device adopts the structure that a primary smoke dust removing and desulphurization area, a secondary smoke dust removing and desulphurization area and a defogging device are sequentially arranged in a tower body in the smoke flowing direction; a porous distribution plate of the primary smoke dust removing and desulphurization area is arranged in the tower body above a smoke inlet; primary spraying layers are arranged in the tower body above the porous distribution plate; a synergistic ring I is arranged between two adjacent primary spraying layers; a liquid collection disc of the secondary smoke dust removing and desulphurization area is positioned in the center of the tower body above the primary spraying layer; a ring-shaped plate is arranged in the tower body above the liquid collection disc; the inner diameter of the ring-shaped plate is smaller than the outer diameter of the liquid collection disc; secondary spraying layers are fixed above the ring-shaped plate in the tower body; a synergistic ring II is arranged between two adjacent secondary spraying layers. The synergistic treatment device has the advantages that dust removing and desulphurization are subjected to hierarchical and synergistic treatment, and a desulphurization spraying tower can be used for achieving efficient dust removing and desulphurization simultaneously, so that the investment and the operation cost can be reduced.

The invention discloses a semi-dry method-wet method series SO2 flue gas desulfurization process and device. The process includes the following steps: low-dust flue gas from a electrostatic precipitator enters a semi-dry desulfurization tower, SO2 flue gas is purified by a bag filter after first-stage desulfurization by a semi-dry desulfurization tower, the flue gas from the bag filter is pressurized by a booster fan and then sent into a wet spray desulfurization tower, the flue gas is rectified by a distributor in the tower and in countercurrent contact with spray slurry for secondary desulfurization, and the purified flue gas is discharged from a chimney after defogging; and desulfurization ash collected at the bottom of the semi-dry desulfurization tower and the bag filter is used as araw material of a desulfurization agent of the wet desulfurization tower. The series process of semi-dry and wet desulfurization towers has the advantages of being low in liquid-gas ratio, low in water consumption and energy saving, a desulfurization by-product gypsum product has high purity, and the discharge of solid waste is reduced.

The invention provides a combined flue gas cleaning system. The combined flue gas cleaning system comprises a spraying washing tower, and an upstream injection pipe arranged vertically, wherein an inlet of the upstream injection pipe is communicated with a waste flue gas discharge hole, while an outlet of the upstream injection pipe is communicated with the spraying washing tower, and the position at which the outlet of the upstream injection pipe is communicated with the spraying washing tower is located between an upper spraying layer and a lower spraying liquid tank of the spraying washing tower, wherein an upstream spraying layer is arranged inside the upstream injection pipe and the spraying direction of the upstream spraying layer is opposite to the flowing direction of the flue gas. The invention also provides a flue gas cleaning method. Due to the adopted combined flue gas cleaning system, the operation pressure drop, the sewage discharge quantity and the equipment investment can be reduced.

The invention provides an intra-tower crystallized ammonia-process desulfurization tower. The intra-tower crystallized ammonia-process desulfurization tower comprises a tower body, an oxidized air pipe, an ammonia water replenishing pipe, a circulating absorption pump, a discharge pump, and a segmenting structure, wherein a tower pool is formed in the internal space of the tower body; the oxidized air pipe is communicated with the internal space of the tower body and can be used for providing air; the ammonia water replenishing pipe provides ammonia water for the tower pool of the tower body; the circulating absorption pump is communicated with the tower pool, pumps out absorption liquid in the tower pool, circularly leads the pumped absorption liquid into the internal space of the tower body, and absorbs sulfur dioxide contained in smoke; the discharge pump is communicated with the bottom of the tower pool; the segmenting structure is positioned in the tower pool and is used for segmenting the tower pool into an oxidization zone and an non-oxidization zone, and the absorption liquid with absorbed sulfur dioxide contained in the smoke flows in the oxidization zone and the non-oxidization zone; and the ammonia water replenishing pipe consists of a first ammonia water replenishing pipe communicated with the oxidization zone, and a second ammonia water replenishing pipe communicated with the non-oxidization zone; the air provided by the oxidized air pipe is led to the oxidization zone; an inlet of the discharge pump is communicated with the oxidization zone; and an inlet of the circulating absorption pump is communicated with the non-oxidization zone. The intra-tower crystallized ammonia-process desulfurization tower can improve the capability of absorbing the sulfur dioxide.

The invention provides a single-circulation double-turbulence double-spray ultra-clean desulphurization dedusting tower, and belongs to the technical field of boiler flue gas purifying. The lower side wall, the top part, and the bottom part of a tower body of the single-circulation double-turbulence double-spray ultra-clean desulphurization dedusting tower are provided with a flue gas inlet, a flue gas outlet, and a thick liquid outlet; the tower bottom is provided with a thick liquid discharge pump connected with the thick liquid outlet; a liquid storage zone is arranged at the internal bottom part of the tower body; an aeration oxygen-increasing device and a disturbance tube are arranged in the liquid storage zone; the disturbance tube is communicated with the liquid storage zone via a thick liquid disturbance pump so as to form a circulation loop; a flue gas inlet gas flue is provided with jet device which is connected with the liquid storage zone via a pipeline provided with a jet pump; a first rotational flow device, a first spray zone, a second rotational flow device, a second spray zone, and a multi-layer demister are arranged in the tower body above the flue gas inlet gas flue from bottom to top; spray pipes of different layers in the first spray zone and the second spray zone are connected with corresponding circulating pumps respectively; and the circulating pumps are communicated with the liquid storage zone respectively. The single-circulation double-turbulence double-spray ultra-clean desulphurization dedusting tower is small in occupied land area, is capable of reducing cost, and is high in efficiency.

The invention relates to a dedusting and deep purification apparatus with high efficiency and low energy consumption for flue gas in a metallurgical slag treatment process. The apparatus comprises a tower for spraying, sprinkling and washing and a downstream type gas-liquid tower for deep purification, dehydration and demisting with foam suspension and pneumatic swirling flow; an outlet at the upper end of the tower for spraying, sprinkling and washing and an inlet at the upper end of the downstream type gas-liquid tower for deep purification, dehydration and demisting with foam suspension and pneumatic swirling flow are connected by a connection flue; a sidewall at the lower end of the tower for spraying, sprinkling and washing is provided with a flue gas inlet pipeline; a sidewall of the downstream type gas-liquid tower for deep purification, dehydration and demisting with foam suspension and pneumatic swirling flow is provided with a flue gas outlet pipeline; the tower for spraying, sprinkling and washing employs a wet type multilayer gas-liquid countercurrent contact mode, and the downstream type gas-liquid tower for deep purification, dehydration and demisting with foam suspension and pneumatic swirling flow employs a gas-liquid current contact mode. The dedusting and deep purification apparatus with high efficiency and low energy consumption for flue gas in the metallurgical slag treatment process is adapted to characteristics of high temperature, high moisture and high viscosity flue gas, and realizes ultra-low flue dust emission concentration in a low energy consumption condition, in order to satisfy more strict environmental protection emission requirements of pollution treatment.

The present invention discloses a limestone-gypsum wet flue gas desulfurization synergist, which comprises, by weight, 70-90 parts of an organic acid salt, 5-20 parts of an organic anhydride, and 5-15 parts of a surfactant. According to the present invention, the type of the component of the desulfurization synergist is simplified while the obtained synergetic desulfurization effect is good; due to the excellent and stable desulfurization effect, under the same conditions, the used raw materials are less, the production cost of the enterprise is low, and the performance price ratio is high; and the sodium diacetate accounting for the absolute proportion in the desulfurization synergist components is the internationally-recognized efficient, safe and inexpensive food additive, and has characteristics of good safety and good environmental protection during the production process, the storage and transportation process, the use process and other processes.

An acidic oxidizing process for removing dust, sulfur and nitrogen from the fume of coal-burning furnace features that the fume is cooled and dusted by showering water and the SO2 and NO are dissolved in water, the oxygen is aerated in the water to increase its acidity, and in acidic condition, the metallic oxides in fume are dissolved in water and decomposed into ions to adsorb, dissolve and complex the SO2 and NO in fume, so removing dust, sulfur and nitrogen.

The invention relates to a liquid phase redistributor for spray towers. The liquid phase redistributor comprises a distribution plate 3 and a support 4 for supporting the distribution plate 3, wherein the distribution plate 3 is annular, and is annularly arranged along the tower wall 1 of a spray tower; the tower wall 1 is provided with a reinforcing plate 2; an annular outer ring of the distribution plate 3 is welded on the tower wall 1 through the reinforcing plate 2; an annular inner ring of the distribution plate 3 is inclined two the lower part of the tower wall 1; and the lower part of the distribution plate 3 is provided with the support 4 which is fixedly connected with the reinforcing plate 2. The liquid phase redistributor can improve the distribution condition that sprayed slurry is dense in the middle and thin at the periphery in the tower, improves the gas absorption efficiency near the tower wall, improves the slurry utilization rate, reduces operating cost of equipment such as a circulating pump, has the advantages of simple manufacturing process, no blockage and entrainment, convenience of installation and simple operation and maintenance, and can be widely applied to various spray towers.

The invention relates to a single-tower and dual-cycle desulfurizing system which comprises a desulfurizing tower and an oxidizing tower, wherein the tower body of the desulfurizing tower is providedwith a flue gas inlet, a flue gas outlet, a first limestone slurry inlet, a first oxidized air inlet, a gypsum slurry discharge port and a first limestone slurry outlet; a first-level spray layer, a tray, a second-level spray layer and a demister are arranged in the desulfurizing tower from bottom to top; the first limestone slurry outlet is connected with the first-level spray layer through a pipeline and a first limestone slurry circulating pump; the demister is provided with a demister flushing water system; the tray is connected with the oxidizing tower through a pipeline; the oxidizing tower is also provided with a second limestone slurry inlet, a second oxidized air inlet and a second limestone slurry outlet; the second limestone slurry outlet is connected with the second-level spraylayer through a pipeline and a second limestone slurry circulating pump. The desulfurizing system provided by the invention realizes a higher desulfurizing efficiency and also can obtain gypsum withperfect quality.

The invention discloses an elastic needle wire packing for air purification and an engineering use method thereof, and relates to mass transfer purification products and technologies in the field of environment friendliness. A plastic elastic wire is alternately stranded on a central rope, elastic needle wire packing monomers in uniform radiation is prepared, and one end or two ends of the packing monomer center rope are fixedly hung on towers, structures or hanging rods in a frame, so that elastic wires are stereoscopically and uniformly spread and filled in an effective area like a forest, the packing is wetted or a water flow is formed by virtue of spray of a spraying device, air blows to the packing forest from any direction, air and liquid can intensively collide and cut on the packing and fully contact to realize high-efficiency mass transfer, particulate matters are washed, soluble matters are absorbed by the liquid, biodegradable organics are dissolved in the absorbing liquid and form biological films on the packing to be degraded, and air is purified. The invention provides widened application of elastic space packing for wastewater treatment, which is just like that a medicine sildenafil for treating cardiovascular diseases is invented by accident to be used for treating male erectil dysfunction.