The reactor purification of waste gases
(57) Abstract:The reactor purification of waste gases relates to equipment for post-combustion of waste gases photocatalysis method. The reactor contains a camera placed in her sources of ultraviolet and infrared radiation, having a catalytically active coating, the latter is in the form of a pack of corrugated plates, combs are placed not parallel to the camera axis and the ridges of adjacent plates have holes in the ridges on one side of each plate for placement of the ridges without holes of adjacent plates with the formation of intersecting channels. Solved technical problem: increasing the efficiency of gas purification. 1 C.p. f-crystals, 5 Il. The invention relates to equipment for afterburning of waste gases termofotoforeticheskii method and can be used in industrial ecology.Known reactor purification of waste gases containing installed in the camera sources of ultraviolet and infrared radiation, the latter of which have a helical shape and a catalytically active surface (RU patent 2041426, CL F 23 G 7/06, 1995).The disadvantage of this reactor is the low efficiency of gas purification.This allows to increase the efficiency of gas purification due to the intensification of the mixing gas emissions in the zone of contact with the catalyst.In a preferred variant embodiment of the present invention the profile of the holes does not match the profile of the ridges.This further improves the efficiency of gas purification due to the intensification of the mixing gas emissions.In Fig. 1 shows a diagram of the proposed reactor of Fig. 2 shows the front view of the plates of the radiation source of Fig. 3 - section a-a of Fig. 2; Fig. 4 and 5 presents the options of the connection zone of the ridges of the plates.Reactor cleaning waste ha the s of which are catalytically active surface in the form of corrugated plates packages 3, ridges 4 are placed not parallel to the axis of the camera 1 and the ridges 4 of the adjacent plates 3 and have holes 5 on one side of each plate 3 for placement of the ridges 4 holes of adjacent plates 3 with the formation of intersecting channels. In a preferred embodiment, the profile of the hole 5 does not coincide with the profile of the ridges 4, that is, between them there are structurally defined gaps 6 of arbitrary shape.When the reactor gaseous emission served in the camera 1, where the flow is alternately passes the 2 sources of ultraviolet radiation through the channels formed by the plates 3 sources of infrared radiation with catalytically active surfaces. Contained in the toxic substances are activated by ultraviolet and infrared radiation and are oxidized to harmless substances in contact with the catalyst. The probability of contact of activated toxic substances from the catalyst is increased due to the turbulence in jets of gas emissions in the area of each intersection of the channels between the plates 3 and each of the gap 6, which creates a gas flow structure with one surface of the plate 3 on the other. The thus treated gas emissions at the output of the camera 1 is not with what it can increase the efficiency of gas purification. 1. The reactor purification of waste gases containing installed in the camera sources of ultraviolet and infrared radiation, the latter of which are catalytically active surface, wherein the source of infrared radiation in the form of packages of corrugated plates, combs are placed not parallel to the camera axis and the ridges of adjacent plates have holes on one side of each plate for placement of the ridges without holes of adjacent plates with the formation of intersecting channels.2. The reactor under item 1, characterized in that the profile of the holes does not match the profile of the ridges.
FIELD: heat power engineering.
SUBSTANCE: method comprises supplying fuel to the burner with simultaneous supplying of the primary air, burning fuel in the mixture with the primary air in the flue pipe of the combustion chamber, supplying the secondary air to the flue pipe downstream, afterburning the unburned fuel in the furnace gases in the afterburning chamber, supplying air to the flow of the hot gases outflowing from the afterburning chamber, and discharging heated air to supply it to the consumer. The burning and afterburning processes are carried out in three stages. In the first stage, the mixture of fuel with the primary air is burnt out for the low excess of the primary air. In the second stage, the burning fuel-air mixture is distributed over the periphery of the flue pipe, is swirled, and mixed with a portion of the secondary air that is supplied to the flue pipe at least in two zones. The mixture with high air excess coefficient is intensively burnt out. In the third stage, the remaining portion of the secondary air is supplied to the flue pipe and, being cooled and enriched with oxygen, the flue gases are supplied to the afterburning chamber and unburned fuel in the flue gases is burnt out in the chamber. The air heater comprises burner (1) with fan of the primary air, combustion chamber with external casing (2) and flue pipe (3) provided with ports (4) and (5) for supplying the secondary air and arranged in outer housing (2) to define ring passage (6) between flue pipe (3) and outer housing (2), and afterburning chamber (7) for unburned fuel in the flue gases. Fan (9) for blowing the secondary air is connected with the space of outer housing (2) of the combustion chamber. Swirler (10) made of a hollow conical mixer is mounted in flue pipe (3) and separates it into the primary A and secondary B chambers. The primary flue chamber A is interposed between burner (1) and swirler (10). The second chamber B is interposed between swirler (10) and afterburning chamber (7). Openings (4) and (5) for supplying secondary air to flue pipe (3) are arranged in at lest two zones of the secondary flue chamber B first of which is closer to swirler (10) , and the second chamber with openings (5) is closer to afterburning chamber (7). Ring passage (6) between flue pipe (3) and outer housing (2) is closed from the side of afterburning chamber (7).
EFFECT: expanded functional capabilities and enhanced completeness of burning.
5 cl, 1 dwg