Device for purification and complex recycling of smoke fumes

FIELD: agriculture.

SUBSTANCE: suggested invention is related to heat and power engineering and agriculture and may be used to reduce contaminations and greenhouse effect of environment and increased crop capacity when growing vegetables in closed areas. Device comprises zone of treatment connected to transit gas duct 1 via discharge gas duct 2. Zone of treatment includes vertical tubular heat exchanger - absorber 3, which is made of the following components arranged serially by gas in tube space top down air heater 4 and condenser, which is connected by condensate with anionite filter 6, and by gas - with ejector 7, gas duct of working mixture 8 and greenhouse 9, in roof of which there is a deflector 10 arranged. Tube space of air heater 4 is connected to blowing air 11. Tube space of condenser 5 is connected to air duct of ambient air 12 and fan 13.

EFFECT: increased ecological and economical efficiency of purification and recycling of smoke fumes.

1 dwg

 

The present invention relates to a power system and agriculture and can be used in processes for treatment and disposal of flue gases of thermal power plants, thermal power plants to reduce pollution and greenhouse effect the atmosphere and increase yields in vegetable greenhouses.

Known gas installation for climate control in greenhouses, including a firing chamber with a burner for the combustion of the gas distribution manifold, heat exchanger, fan, nozzles for spraying water piping with adjustable dampers, exhaust fans, which due to the heat of the flue gases, the heated air is mixing with the combustion gases to enrich its carbon dioxide before it enters the greenhouse [and. SSSR No. 18451, MCL401G, bull. No. 14, 1966].

The main disadvantage of the known device is the inability to clean it of flue gases from nitrogen oxides and sulfur oxides before feeding them into the greenhouse, the presence of which in the heated air has a negative impact on the development of plants in the greenhouse, which reduces the economic and environmental performance of the installation.

Closer to the proposed invention is a device for cleaning flue gases from harmful impurities of nitrogen oxides and sulfur oxides, comprising a treatment zone in the city is thode placed in her consistently and made in the form of a vertical tubular heat exchangers, heat exchanger and absorber sections with lifting pipe argatoff, separation section, unionicola filter, in which the cooling of flue gases to a temperature below the dew point, condensation of water vapor in a tubular heat exchanger, the saturation of the condensate recirculation of ozone and oxygen, oxidation and absorption of oxides of nitrogen and oxides of sulfur saturated condensation with the formation of acidic condensate, after which the cleaned flue gases are vented to atmosphere, and the condensate is cleaned from the acid components in unionicola filter, which displays in the process of regeneration in the form of an aqueous solution of NaNO3[RF patent №2186612, MCL401D 53/60, BIPM No. 22, 2002].

The disadvantages of the known devices are horizontal layout of equipment, requiring additional manufacturing space for its placement and with considerable aerodynamic drag, low speed oxidation of nitrogen oxides, which cause significant metal content, lack of equipment for cleaning of flue gases from carbon dioxide and its further use, which, ultimately, reduces the environmental and economic efficiency of its work.

The technical object of the present invention is to improve environmental and eco the ohmic efficiency of the device for treatment and comprehensive utilization of flue gases.

The technical result is achieved in a device for cleaning and comprehensive utilization of flue gases, comprising a treatment zone that is connected with the transit duct through the outlet duct, which comprises a vertical tubular heat exchanger, absorber, consisting of a series connected gas in the tube space top-down, heater and condenser, which is connected to a condensate with Uniontown filter, and gas from the ejector, the gas duct of the working mixture and the greenhouse, in the roof where the vent, and annulus heater is connected to the blower duct and the tube space of the condenser is connected to the duct outside air and a fan.

The basis of the proposed device is based on: features of the composition of the flue gases of thermal power units, the main components of which, on the basis of experimental data and calculation of composition of the products of combustion are nitrogen (76-82)% vol., carbon dioxide (7-14)% vol., water vapor (5-17)% vol., concentration of which depends on the type of fuel and method of its burning [Roddatis CYP, Sokolovsky AB Reference boiler plants with low productivity. - M.: Energy, 1975, p.15]; high speed net acid generation under conditions of condensation of the water vapour nitrous gases [Olevsky V.M. Productions is nitric acid in aggregates of large capacity. - M.: Chemistry, 1985, p.42], the use of sodium nitrate as a fertilizer [Posin ON the Technology of mineral fertilizers. - L.: Chemistry, 1983, s.226] and the ability of plants during photosynthesis to absorb carbon dioxide and give off oxygen [com VP, V. Shvedova. Biochemistry. - M.: bustard, 2004, s].

Device for cleaning and comprehensive utilization of flue gases is shown in the drawing.

Device for cleaning and comprehensive utilization of flue gas contains a treatment area that is connected with the transit duct 1 through the outlet duct 2 with a vertical tubular heat exchanger absorber 3, which consists of series connected gas in the tube space top-down, the heater 4 and the capacitor 5, which is connected to a condensate with Uniontown filter 6, and the gas from the ejector 7, the flue mixture 8 and 9 greenhouse, the roof of which is placed the deflector 10 and annulus heater 4 is connected to the blower duct 11, and the tube space of the condenser 5 is connected to the outdoor air duct 12 and the fan 13.

Cleaning of flue gases and comprehensive recycling is carried out in the proposed device, as follows.

Flue gases, the number of which is determined by the performance of the device, from the transit duct 1 under what aparam, created by the exhauster (not shown)through an outlet duct 2 are directed into the tubular heat exchanger-absorber 3, moving from top to bottom, alternately received in the tube space of the vertical heater 4, cooled by blowing air to a temperature of 80-85°C, and then also in the tube space of the condenser 5, the cooled outside air to a temperature of 40-50°C and, consequently, heating of the air, where there is a mixture of gases with ozonopause mixture, cooling with condensation flowing down the walls of pipes, oxidation at high speed due to the presence of ozone, oxides of nitrogen to the highest absorbance their condensate and intensive kislotoobrazovanie in the process of condensation of water vapor. From the condenser 5 cleaned from oxides of nitrogen and cooled flue gases are supplied to the ejector 7, where it is mixed in a predetermined ratio with heated outside air from the condenser 5, supplied by the fan 13 to the duct 12, the obtained air-gas mixture through the gas duct 8 is fed into the greenhouse 9, where the process of photosynthesis, carbon dioxide is absorbed by plants with oxygen, at the same time intensificar their growth, after which the air-gas mixture enriched with oxygen, due to the vacuum generated by the deflector emitted into the atmosphere. The condensate saturated the acid components, from the condenser 5 comes in anonimowy filter 6, where it is cleaned from acid components and routed to the condensate tank (not shown), and then used to feed the boiler unit. After regeneration of the anion unionicola filter 6 with a solution of sodium hydroxide receive an aqueous solution of NaNO3that as fertilizer is used to increase yield in the greenhouse 9.

When this vertical placement (top-down) in the heat exchanger absorber 3 heater 4 and the capacitor 5 can reduce the aerodynamic resistance of the absorber 3 by reducing the number of local resistance and lack of connecting ducts between them, and the installation of the ejector 7 reduces the pressure in the duct after the condenser 5, which, ultimately, allows you to reduce power consumption by the exhauster (not shown)located on the transit duct 1. In addition, the ejector 7 provides a complete mixing of air with the combustion gases prior to submission of the working mixture in the greenhouse 9 that enables even raspreditel CO2throughout the volume of the greenhouse 9. Installation on greenhouse 9 of the deflector 10 allows air circulation in the greenhouse 9 through the use of wind energy, which reduces the load on the fan 13 and the power consumption for its drive.

Thus, the proposed mouth of austo provides increased velocity of flue gases, the utilization of heat for heating of greenhouses and carbon dioxide, which is absorbed by plants with oxygen, which increases environmental and economic efficiency of cleaning and recycling of flue gases, increasing the yield of vegetable crops, as well as reducing the threat of the greenhouse effect of the surrounding atmosphere.

Device for cleaning and comprehensive utilization of flue gases, comprising an absorber for absorbing oxides of nitrogen, the feed ducts, anonimowy filter, fan and greenhouse, characterized in that the transit duct is connected via an outlet duct with a vertical tubular heat exchanger absorber consisting of series connected gas down the air heater and the condenser, which is connected gas from the ejector and the greenhouse, in the roof where the vent.



 

Same patents:

FIELD: technological processes.

SUBSTANCE: method for cleaning of exhaust gases of gas-turbine plant (GTP) includes installation of thermocatalytic neutraliser (TCN) in gas flue of GTP with developed catalytic surface in the form of panels, total area of surfaces of which, located cocurrently to direction of exhaust gases motion, exceeds area of cross section of GTP gas flue, at that TCN is installed in vertical gas flue of GTP, and required total volume of TCN panels is defined using the following expression: vk=Be.g.·τ, where: vk - required total volume of TCN panels, m3; B e.g. - volume flow rate of exhaust gases, m3/s; τ - required time for contact of exhaust gases with developed catalytic surface of TCN based on necessary extent of GTP exhaust gases cleaning, s. Device is suggested for cleaning of gas-turbine plant (GTP) exhaust gases, which includes thermocatalytic neutralizer (TCN), which is arranged with the possibility of installation in GTP gas flue along direction of exhaust gases motion and which represents casing open on top and bottom, inside of which panels of TCN catalytic units are installed as inclined in respect to vertical axis of casing and gas flue of GTP and are serially connected between each other, converging in adjacent top and bottom ends. Panels are made on the basis of highly porous cell materials, at that panels of catalytic units of TCN are formed by frame with wing spars, in which holders are inbuilt with catalytic units.

EFFECT: reduction of hydraulic losses in thermocatalytic neutraliser and required volume of catalyst, increase of extent of exhaust gases cleaning, compactness and manufacturability of layout of device for cleaning of exhaust gases of gas-turbine plant.

12 cl, 3 tbl, 6 dwg

FIELD: chemistry.

SUBSTANCE: processing blasting air and flue gases occurs in the device, which includes a heat exchange and absorptive-heat exchange sections. Water vapour condenses during the cooling of flue gases lower than the dew-point. The cooled flue gases are mixed up with the ozone-air mixture. Oxides of nitrogen and sulfur (NOx and SOx) are oxidized to NO2 and SO3 and absorb the obtained condensate in the plate-type heat exchanger 1st step 27. In the lower block of gas cleaning 28 filled with a crumb of slaked lime, neutralizes NO and NO2. In the upper block of the gas cleaning 29 filled with a crumb of activated coal, adsorbs carbon monoxide and unburned fuel. After the heat exchanger of the 2nd step 11 heated air in the block of regeneration 5 is desorbed from the activated coal CO and the unburned fuel. Enriched gases heated air is directed to the furnace of a boiler.

EFFECT: declared invention provides an increase ecological and economic efficiency of process of cleaning of flue gases.

2 cl, 7 dwg

FIELD: heat power engineering.

SUBSTANCE: nozzle comprises housing (1) with docking units (2). The first stage of cleaning is made of vertical perforates members (3). Each of the members is composed of vertical perforated wall with bottom (4) and vertical perforated detachable side lid (5). Perforated member (3) is made of corrosion-resisting material and is filled with particles of disintegrated slake lime. The second stage of cleaning is made of perforated members (8) filled with activated coal. Perforated members (3) and (8) are mounted inside gas passages (10) that are separated from air passages (11) with vertical baffles. Near the bottom the air passages are connected with sucking slots (12) thus forming a plate heat exchanger. Inclined chutes (13) underlie the heat exchanger and are connected with drain pipeline (15) through valve (16).

EFFECT: reduced sizes and simplified structure.

6 dwg

FIELD: catalyst for improved hydrolysis of carbon oxysulfide (COS) and hydrocyanic acid (HCN) in gaseous mixtures.

SUBSTANCE: invention relates to application of TiO2-based composition as catalyst for COS and/or HCN in gaseous mixture releasing from apparatus for joint energy production, wherein said composition contains H2, CO, H2S and H2O in amounts of 10-40 %; 15-70 %; 200 ppm-3 % and 0.5-25 %, respectively. Moreover abovementioned composition contains at leas 1 mass.%, preferably at least 5 % at least one alkali-earth metal sulfate selected form calcium, barium. Strontium, and magnesium.

EFFECT: high conversion ratio of COS and HCN, irresponsiveness to presence of NH3, decreased production of CO2 and CH4.

8 cl, 5 ex

FIELD: complex cleaning of various industrial gaseous emissions.

SUBSTANCE: proposed method may used for complete entrapping of toxic gases, such as NOx, SO2 and CO from flue gases of fuel burning units and gaseous emissions from production units. Proposed method includes pumping of gas flow to be cleaned through reservoir filled with reaction fluid followed by settling, separation of reaction products in form of sediment and their utilization. Used as reaction fluid is trifluoroacetic acid saturated with oxygen. In the course of cleaning, composition of cleaned gases is monitored continuously. In case of penetration of contaminants, flow of gases being cleaned is directed to second reservoir filled with new portion of trifluoroacetic acid saturated with oxygen. Used trifluoroacetic acid is regenerated by saturating it with oxygen and is directed to re-cycle.

EFFECT: efficiency close to 100%.

1 ex

FIELD: chemical industry; methods of neutralization and a utilization of the aggressive chemical compounds.

SUBSTANCE: the invention is pertaining to the field of neutralization and a utilization of the aggressive chemical compounds, in particular, the saturated with the anhydrides acid-containing compounds and wastes. The neutralization is applied to the smoke mixture containing the sulfuric anhydride and chlorosulfonic acid, or the oxidizing agent of the rocket propellant based on of the nitric acid containing a dimer of the nitrogen dioxide. For neutralization use the hydrolyzed dispersible aluminosilicates based of the natural clays selected from: hydromicaceous Cambrian clay, montmorillonite clay, kaolinite clay or on the basis of their mixtures. At that the hydrolyzed dispersible aluminosilicates, which are taken at least in equal shares with an aggressive chemical compound, are prepared at the following ratio of components (in mass shares): a dry substance - 1.0-2.5, water - 1.0. The invention allows to neutralize the aggressive wastes and to produce the useful product with the sorption activity.

EFFECT: the invention ensures neutralization of the aggressive wastes and production of the useful product with the sorption activity.

3 cl, 2 ex, 6 tbl

FIELD: emission gas treatment.

SUBSTANCE: invention, in particular, relates to cleaning emission gases associated with manufacture of fired building materials to remove injurious impurities. Method according to invention consists in that reductive conditions are created within rotary furnace zone wherein temperature of emission gases is between 850 and 1400°C using burning-out of carbon-containing waste and maintaining air excess factor α = 1.05...1.1, whereas in furnace zone, emission gas temperature is below 800°C, air excess factor α is elevated to 1.2 by feeding hot air.

EFFECT: enabled conversion of nitrogen and sulfur into nitrogen and sulfur and additional removal of CO and simultaneous reclamation of coal production waste.

1 tbl

FIELD: heat-power engineering; cleaning flue gases from toxic admixtures.

SUBSTANCE: proposed method includes cooling of flue gases to temperature below dew point, condensation of water vapor, mixing of cooled flue gases with ozone-and-air mixture, oxidation and absorption of nitrogen oxides and sulfur oxides by condensate thus obtained and discharge of cleaned flue gases and condensate from zone of treatment. Flue gases and acid condensate are cleaned from carbon dioxide in perforated units of cassettes coated with layer of slaked lime [Ca(OH02] for forming calcium nitrite [Ca(NO3)], calcium carbonate (CaCO3) and calcium nitrate [Ca(NO3)]. Device proposed for realization of this method includes zone of treatment in form of box with heat-exchange and absorption-and-heat exchange sections located in this box in way of motion of flue gases. These sections are provided with air and flue gas inlet and outlet branch pipes where heat exchangers-air preheaters of 1st and 2nd stages, horizontal and vertical perforated cassettes units made from rough corrosion-resistant material coated with layer of slaked lime [Ca(OH2)], mixing chamber with perforated distributing tube and air duct with ozonizer are located.

EFFECT: enhanced ecological and economical efficiency and reliability.

3 cl, 1 dwg

The invention relates to a power system and can be used in the purification of flue gases of thermal power plants from oxides of nitrogen and oxides of sulfur

The invention relates to equipment for pollution control

FIELD: agriculture, in particular, growing of plants in protected ground, for example in greenhouses, on neutral substrate with feeding of plants with macro- and micro elements supplied to zone under roots and feeding with carbon dioxide.

SUBSTANCE: method involves growing C3 plants in greenhouses on substrates by feeding nutritive solution under plant roots, feeding of plants with carbon dioxide and also by providing illumination with the use of lamps; hermetically covering plants with transparent film laid over constructions which may be adjusted in vertical plane as plants grow. Carbon dioxide is automatically supplied to zone under film by means of programmer. Nutritive solution is supplied into substrate in accordance with signal generated by moisture content sensor.

EFFECT: reduced consumption of carbon dioxide supplied for feeding of plants, decreased capital and operation costs, reduced consumption of power for heating greenhouses, and increased yield of plants.

2 cl, 1 dwg, 1 tbl

FIELD: agriculture.

SUBSTANCE: greenhouse has vented space, apparatus for removal of carbonic acid gas from atmospheric air and carbonic acid gas generator for generating of carbonic acid gas with low content of carbon 14 isotope. Temperature mode inside greenhouse is reliably maintained by air conditioning and by employment of shock resistant light-transmitting covering tending to retain infrared heat energy. Self-cleaning of light-transmitting covering is provided by means of oxide coating. Sealing capacity of greenhouse is not affected by passage of personnel and equipment therein owing to employment of double door, wherein doors are mutually blocked. Soil air drainage is used for preventing gaseous carbonaceous soil decomposition products from getting into inner atmosphere of greenhouse. Intensified ripening of plants is enabled by addition of ethylene into inner atmosphere of greenhouse.

EFFECT: increased efficiency and simplified construction.

14 cl, 1 ex

The invention relates to agriculture, namely, the feeding of plants in greenhouses
The invention relates to agriculture, in particular the production of vegetables in greenhouses, greenhouses, hydroponic plants

The invention relates to a device for growing plants in artificial conditions and can be used in agriculture

The invention relates to agriculture and can be used in the production of vegetables, berry and mushroom products

The invention relates to agriculture, in particular vegetable greenhouse

FIELD: agriculture.

SUBSTANCE: greenhouse has vented space, apparatus for removal of carbonic acid gas from atmospheric air and carbonic acid gas generator for generating of carbonic acid gas with low content of carbon 14 isotope. Temperature mode inside greenhouse is reliably maintained by air conditioning and by employment of shock resistant light-transmitting covering tending to retain infrared heat energy. Self-cleaning of light-transmitting covering is provided by means of oxide coating. Sealing capacity of greenhouse is not affected by passage of personnel and equipment therein owing to employment of double door, wherein doors are mutually blocked. Soil air drainage is used for preventing gaseous carbonaceous soil decomposition products from getting into inner atmosphere of greenhouse. Intensified ripening of plants is enabled by addition of ethylene into inner atmosphere of greenhouse.

EFFECT: increased efficiency and simplified construction.

14 cl, 1 ex

FIELD: agriculture, in particular, growing of plants in protected ground, for example in greenhouses, on neutral substrate with feeding of plants with macro- and micro elements supplied to zone under roots and feeding with carbon dioxide.

SUBSTANCE: method involves growing C3 plants in greenhouses on substrates by feeding nutritive solution under plant roots, feeding of plants with carbon dioxide and also by providing illumination with the use of lamps; hermetically covering plants with transparent film laid over constructions which may be adjusted in vertical plane as plants grow. Carbon dioxide is automatically supplied to zone under film by means of programmer. Nutritive solution is supplied into substrate in accordance with signal generated by moisture content sensor.

EFFECT: reduced consumption of carbon dioxide supplied for feeding of plants, decreased capital and operation costs, reduced consumption of power for heating greenhouses, and increased yield of plants.

2 cl, 1 dwg, 1 tbl

FIELD: agriculture.

SUBSTANCE: suggested invention is related to heat and power engineering and agriculture and may be used to reduce contaminations and greenhouse effect of environment and increased crop capacity when growing vegetables in closed areas. Device comprises zone of treatment connected to transit gas duct 1 via discharge gas duct 2. Zone of treatment includes vertical tubular heat exchanger - absorber 3, which is made of the following components arranged serially by gas in tube space top down air heater 4 and condenser, which is connected by condensate with anionite filter 6, and by gas - with ejector 7, gas duct of working mixture 8 and greenhouse 9, in roof of which there is a deflector 10 arranged. Tube space of air heater 4 is connected to blowing air 11. Tube space of condenser 5 is connected to air duct of ambient air 12 and fan 13.

EFFECT: increased ecological and economical efficiency of purification and recycling of smoke fumes.

1 dwg

FIELD: agriculture.

SUBSTANCE: device to clean air exhausts of livestock farms using plants comprises reservoirs to grow plants, an air pump, a system of pipelines to discharge polluted air. The pipelines to discharge polluted air are installed under a roof ridge of the livestock farm, at the same time the outlet of the air pump is connected via a heater with pipelines of aeration drainage, installed at the depth from 10 to 25 cm off soil surface and located in a hothouse.

EFFECT: invention ensures biological cleaning of air medium from ammonia, hydrogen sulphide and carbonic acid gas and supply of oxygen-saturated air back into a livestock house.

1 dwg

Up!