Nozzle for cleaning flue gases

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

 

The invention relates to a power system and can be used for cleaning flue gases from harmful impurities sources of heating systems residential heating.

A device for cleaning the flue gases containing the treatment area in the duct (the duct) placed in heat transfer section, made in the form of a vertical tubular heat exchanger, absorption section, made in the form of a vertical tubular heat exchanger with a tray and placed them in coaxial lifting pipe airlift separation section, made in the form of a vertical tubular heat exchanger, and the bottom of the pan pipe connected to Uniontown filter, in which the flue gases are cleaned from impurities together with their utilization [1].

The disadvantages of the known device is a bulky device, which does not allow to use it in systems residential heating.

The closest to the technical essence of the present invention is a device for purification and recycling of flue gases containing box placed in it in the direction of the flue gas heat exchanger section, which includes a heat exchanger and reported through the window with absorber-heat exchanger section, a tray which contains the bottom-up block horizontal perforated tape, made of rough corrosion-resistant material, covered by a layer of slaked lime (CA(Oh)2), a hollow mixing chamber, block vertical perforated tape, a similar design to the horizontal tapes, separating plate [2].

The main disadvantages of the known devices include the inability of flue gas carbon monoxide (CO), and the complexity and bulkiness designs that reduce the efficiency of cleaning and do not allow it to be used in systems residential heating.

The technical task to be solved by the invention is to provide flue gas not only from nitrogen oxides, and carbon monoxide (CO) and carbon dioxide (CO2), reducing the size and simplifying the design of the device, which increases the efficiency of flue gas cleaning from impurities and reliability of the device in the room heating system.

The technical result is achieved by the fact that the proposed cap for flue gas contains a box with connecting nodes, in which in the direction of flue gases placed first cleaning stage comprising a vertical perforated tape, each of which consists of a flanged vertical perforated wall with the bottom and inserted the it vertical perforated removable side cover, made of corrosion resisting material and filled with crushed particles of slaked lime (CA(Oh)2), and the second purification stage, in which is placed a perforated tape, similar in design to the tapes of the first stage of purification, but filled with particles of activated carbon, and cassettes of the first and second cleaning stages are located inside the gas channels, separated by vertical partitions from the air channels connected in its lower part with intake slits, forming a heat exchanger, and which is arranged inclined trays, communicating with a reservoir pocket, the bottom of which, in turn, is connected with the drain pipe through a water lock.

The proposed cap for flue gas, presented in figure 1-6, consists of a body 1 with connecting nodes 2, in which in the direction of flue gases placed first cleaning stage comprising a vertical perforated tape 3, each of which consists of a flanged vertical perforated wall with a bottom 4 and inserted in her removable vertical perforated side cover 5 with holes 6, filled with crushed particles of slaked lime (CA(Oh)2) 7, and the second purification stage, in which is placed a perforated tape 8, a similar design to the cassettes 3 : size and the United particles of activated carbon 9, and between the cassettes 3 and 8 are gas channels 10 and the air duct 11 connected in its lower part with intake slits 12, forming a plate heat exchanger, which is arranged inclined trays 13, United with the assembled pocket 14, the bottom of which, in turn, is connected with the drain pipe 15 with the trap 16.

Nozzle for cleaning the flue gases is as follows. Pre-nozzle is connected via connecting node 2 to the output section of the flue hot water unit and, if necessary, with the chimney or outer atmosphere. Flue gases for gas channels 10 are moving upwards, being cooled to a temperature below the condensation temperature due to heat transfer through the wall to the outside air, moving air channels 11 and coming from the intake slits 12, and simultaneously in contact through holes 6 vertical perforated tape 1-th stage of purification 3 with particles of slaked lime (CA(Oh)2) 7, with which the flow of the reaction mixture of NO and NO2with CA(Oh)2with the formation of calcium nitrite (Ca(NO2)2) and calcium nitrate (CA(NO3)2) [3, s], carbon dioxide (CO2), which is a significant number (10%) in flue gases with CA(Oh)2with the formation of calcium carbonate (CA(CO)3) [4, s], which, in turn, EOI is modestum to carry out the drops of condensate, containing traces of nitric acid generated due to the absorption of nitrogen dioxide (NO2) with the formation of calcium nitrate (CA(NO3)2) [3, s, 6, s], and then peeled from most of the harmful impurities (NOx, SOx) flue gases get into the punched tape of the 2nd stage of purification 8 filled with particles of activated carbon 9, where the flue gases are cleaned from carbon monoxide (CO) and carbon dioxide (CO2), which are adsorbed by activated carbon [7, p.289], after which the flue gases, finally peeled, removed from the nozzle. Condensate saturated acid components flowing in the form of a film on the walls of the gas channels of the 1st stage of purification, then the trays 13 flows into a collecting pocket 14, where through the drain pipe 15 with the trap 16 is discharged into the sewer.

Upon completion of the active cycle of the cassettes 3 and 8, which can be identified by increased leakage of harmful impurities in the atmosphere, waste cassette 3 and 8 replace. The regeneration process is that used cassettes 3 and 8 removed from boxes 1, released from the particles 5, consisting of a mixture of calcium carbonate (caso3), calcium nitrite (Ca(NO2)2), calcium nitrate (CA(NO3)2and from particles 9 consisting of activated carbon saturated with carbon monoxide (CO) and carbon dioxide (CO2 ), and again fill with crushed hydrated lime (CA(Oh)2and fresh particles of activated carbon, and then re-used for cleaning flue gases in the proposed device.

Thus, the proposed nozzle allows cleaning of flue gases in the system room heating not only from nitrogen and sulfur oxides (NOxand SOx), but also from carbon dioxide (CO2) and carbon monoxide (CO), which increases the environmental effectiveness of the cleaning process and the reliability of the device.

Bibliography

1. RF patent № 2186612, M CL4, 01D 53/60, 2000.

2. RF patent № 2254161, M CL4, 01D 53/14, 2005.

3. Nenitzescu K. General chemistry. - M.: Mir, 1968, 816 S.

4. Abramov NN. and other Water. - M.: Gastrolyzer, 1960, 579 S.

5. Posin ON the Technology of mineral fertilizers. - L.: Chemistry, 1983, 360 S.

6. Kutepov A.M. and other General chemical technology. - M.: Vysshaya SHKOLA, 1985, 448 S.

7. A.I. Boldyrev Physical and colloid chemistry. - M.: Higher school, 1983, 406 S.

Nozzle for cleaning the flue gases, comprising a box with connecting nodes, hosts plate heat exchanger and in the direction of flue gases - vertical perforated tape, made of corrosion-resistant material and slaked lime (CA(Oh)2), characterized in that each perforated CAS is ETA consists of a flanged vertical perforated wall with a bottom and inserted in it a vertical perforated removable side cover, the space between them filled with crushed hydrated lime (CA(Oh)2), in a box built the second purification stage, in which is placed a perforated tape, similar in design to the tapes of the first stage of purification, filled with particles of activated carbon, and cassettes of the first and second cleaning stages are located inside the gas channels, separated by vertical partitions from the air channels connected in its lower part with intake slits, forming a plate heat exchanger, which is arranged inclined trays, communicating with a reservoir pocket, the bottom of which, in turn, is connected with the drain pipe through a water lock.



 

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