UA75407U - Method for operation of installation for heat deactivation and utilization of heat of furnace gases came from fuel-firing aggregates - Google Patents

Abstract

A method for operation of an installation for heat deactivation and utilization of heat of furnace gases, discharging from fuel-firing aggregates, comprises the removal of furnace gases from fuel-firing aggregate into bottom millstone. The removal of furnace gases from bottom millstone in compartment between fuel-firing aggregate and chimney valve to the circuit for clarification of furnace gases with subsequent amortization of furnace gases. Then the removal of furnace gases from circuit for clarification of furnace gases into chimney flue opposite towards the mentioned bottom millstone is carried out. The negative pressure regulation is carried out in the bottom millstone at the expense of furnace gases supply speed changing from said clarification circuit into chimney flue.

Description

The useful model belongs to the methods of operation of heat treatment and heat recovery units of flue gases, which leave from combustion units, for example, from coke batteries, blast furnaces and blast furnaces, and other combustion units, from which flue gases exit through a chimney into the atmosphere.

There is a well-known installation for thermal neutralization and heat utilization of flue gases emitted from fuel-burning units (see patent of Ukraine Me 40853 Installation for cleaning flue gases emitted from a coke oven", IPC S1OV 45/00, publ. 04.27.2009), which contains: - at least one fuel-burning unit, which is connected to the smoke pipe by means of a bed, which contains a shutter, which is placed in the area of adjacency of the exit of the bed to the smoke pipe, - a circuit for cleaning flue gases, which contains a waste boiler, a smoke extractor with a guide device , while the inlet of the said flue gas cleaning circuit is connected to the couch in the area between the fuel-burning unit and the damper, and the outlet of the flue gas cleaning circuit is adjacent to the smoke pipe.

A constructive feature of the known technical solution is that the shutter, which is placed in the zone of the exit of the lounger to the smoke pipe, is constantly in the closed position, and all smoke gases are removed through the smoke gas cleaning circuit. The couch is a gas duct with a cross-section from 2 x 2 m to 4 x 4 m. The couch is usually located underground, and a damper is installed in the area where the couch connects to the chimney, which is designed to prevent the entry of untreated flue gases from the couch into the chimney. During the operation of the installation, it is impossible to achieve complete tightness of the damper, since the damper has significant leaks and is constantly affected by the rarefaction of the smoke pipe of the order of 350-600 Pa, as a result of which part of the untreated flue gases seep through the damper and enter the chimney, which is an undesirable effect during operation of the installation.

A well-known installation for thermal neutralization and heat utilization of flue gases emitted from fuel-burning units (see patent of Ukraine Me 85778 "Installation for cleaning flue gases emitted from a coke oven", IPC S1OV 45/00, publ. 25.02.2009), which contains: - at least one fuel-burning unit, which is connected to the smoke pipe by means of a bed, which contains a shutter, which is placed in the area of adjacency of the exit of the bed to the smoke pipe, - a circuit for cleaning flue gases, which contains a recovery boiler, a smoke extractor with a guide device, while the inlet of the said flue gas cleaning circuit is connected to the couch in the area between the fuel-ignition unit and the shutter, and the outlet of the flue gas cleaning circuit is adjacent to the smoke pipe.

The design feature of the known technical solution is that the installation contains an additional bypass channel to create recirculation of cleaned flue gases from the cleaning circuit in the sunbed in front of the sliding door, which is in a slightly open position, since according to the operating regulations of the fuel-burning unit, it is provided that in the event of an emergency stop of the smoke cleaning circuit gases (utilizer boiler or smoke extractor), the slightly open state of the damper will not lead to a sharp change in the hydraulic mode of operation of the fuel-burning unit, i.e. the damper is slightly open to ensure shock-free connection of the fuel-burning unit to the smoke pipe in the event of an emergency stop of the cleaning circuit. At the same time, the main part of the flow of gases passing through the bypass channel enters the smoke pipe through the damper of the couch, and part of this flow (1-595 of the total flow of flue gases behind the boiler-utilizer of the flue gas cleaning circuit) goes to recirculation. The rarefaction in the sunbed in front of the gate is established by changing the load of the smoke extractor of the cleaning circuit at a certain rarefaction of the work at the output of the fuel-burning unit. The flow of flue gases through the bypass channel is established by the damper of the bypass channel, when the desired degree of opening of the damper of the couch in front of the smoke pipe is established. Under the conditions of stable operation of the fuel-burning unit, in the event of an emergency shutdown of the cleaning circuit and with a high vacuum drop in the smoke pipe (winter mode), the mode with recirculation of gases in the sleeper will be impossible, while part of the untreated gases will flow to the smoke pipe, in addition to the cleaning circuit.

The task of the useful model is to reduce the flow of untreated flue gases through the damper of the sunbed into the chimney at all possible positions of the damper (closed, slightly open and fully open), which is located in the zone of the adjacency of the sunbed to the chimney by reducing the vacuum at the exit of the sunbed into the smoke pipe and accordingly, the drop of 60 vacuums on the damper is reduced.

Also, the task of the useful model is to maintain and regulate the applied flow of purified flue gases for recirculation at different positions of the damper, which is located in the area where the sunbed adjoins the smoke pipe due to the regulation of the pressure difference on the damper at different positions.

Also, the purpose of the proposed useful model is to expand the arsenal of technical capabilities of heat treatment and waste heat recovery units of flue gases leaving fuel combustion units.

The essence of the useful model is that due to the flue gases leaving the flue gas cleaning circuit, after the damper on the side of the chimney, aerodynamic support is formed by the cleaned flue gases that leave the cleaning circuit into the chimney. As a result of the formation of aerodynamic support, there is a drop in the vacuum difference in the sunbed on the damper, which is located in the area of adjacency of the sunbed to the smoke pipe, while thanks to the regulation of the speed of supply of purified flue gases from the cleaning circuit into the smoke pipe, the difference in vacuum on the damper is maintained and regulated, as well as the flow of purified flue gases, which are supplied for recirculation in the sunbed, is regulated.

The problem is solved by the fact that in the known method of operation of the installation of thermal neutralization and utilization of the heat of flue gases leaving from fuel combustion units, which includes: - removal of flue gases from at least one fuel combustion unit into a couch, the outlet of which is connected to a smoke pipe and contains damper, - removal of the mentioned flue gases from the bed in the area between the combustion unit and the damper into the flue gas cleaning circuit with the subsequent neutralization of the flue gases in the recovery boiler, - the removal of flue gases from the cleaning circuit into the chimney, according to the claimed useful model, - they carry out the removal of flue gases from the flue gas cleaning circuit into the flue pipe opposite the mentioned exit of the sunbed - and also carry out the regulation of the rarefaction in the sunbed after the mentioned damper from the side of the flue pipe, due to the change in the speed of the flow of flue gases from the mentioned circuit

From cleaning to the chimney.

Thanks to the formation after the damper on the side of the smoke pipe of aerodynamic support by flue gases leaving the cleaning circuit, the reduction and regulation of rarefaction after the damper on the side of the smoke pipe in the sunbed occurs. Reducing and adjusting the vacuum after the gate allows you to reduce and adjust the difference in the vacuum at the gate, which

Z5 allows to reduce the flow of untreated flue gases through it, and also allows to regulate the consumption of purified flue gases for recirculation.

Since the combustion unit can be operated at different loads, as a result of which different amounts of flue gases leave it, and since the rarefaction in the flue constantly changes depending on various factors, for example, day-night, winter-spring-summer-autumn, the technological state of the flue pipes, this in its entirety leads to a constant fluctuation of the vacuum in the couch after the damper on the side of the smoke pipe, which in turn affects the vacuum in front of the damper on the side of the fuel-burning unit, which affects the flow of purified flue gases for recirculation. Therefore, adjusting the speed of the supply of flue gases into the flue from the cleaning circuit makes it possible to form an aerodynamic support, reduce rarefaction at the exit of the sunbed into the flue, and also provides regulation and maintenance of the applied flow of purified flue gases for recirculation at different positions of the damper, which is located in the area of adjacent to the sunbed to the chimney.

When considering examples of the implementation of a valid useful model, a narrow terminology is used. However, a valid useful model is not limited to accepted terms and it should be understood that each such term covers all equivalent elements that work in a similar way and are used to solve the same problems.

Fig. 1 - shows the first version of the implementation of the claimed utility model.

Fig. 2 - graphically shows the value of rarefaction after the damper on the side of the smoke pipe.

Fig. C - shows the second version of the application of the claimed useful model.

Fig. 4 - conditionally shows the section of fig. From the smoke pipe in the area adjacent to it, the couch and the flue gas cleaning circuit.

Fig. 5 - a fragment of Fig. 3 is conventionally depicted.

In fig. 1 depicts the first variant of the implementation of a valid useful model, namely, the installation of thermal neutralization and heat utilization of flue gases leaving from fuel combustion units. So in fig. 1 shows: coke battery 1, coke ovens 2,

smoke pipe 3, bed 4, shutter 5, flue gas cleaning circuit, recovery boiler 7, smoke extractor 8 with guide device 9, shut-off valves 101 and 102, gas ducts 11: and 115, rarefaction regulators 121 and 12", which are located along on the sides of the coke battery 1, the control unit 13 and the vacuum sensor 14.

In fig. 2 graphically shows the value of the rarefaction (position P) along the length (position I) of the couch 4 in the case of maintaining the applied rarefaction in front of the gate valve 5 in the range of 400 Pa to ensure the effective operation of the coke battery 1. So in fig. 2 shows the graph of Rroy. - the value of rarefaction according to the closest analogue in the couch 4 after the damper 5 on the side of the smoke pipe 3, Pa.; Rome - the value of rarefaction according to the claimed useful model, in the sunbed 4 after the damper 5 on the side of the smoke pipe, Pa.; Rrira. - the value of rarefaction according to the useful model, which is declared in the sunbed 4 in front of the shutter 5 on the side of the smoke pipe, Pa and Re - the value of rarefaction of the smoke pipe 3, Pa. Also in fig. 2 schematically depicts the AVim rarefaction drop. on shutter 5 when using a valid useful model, Pa.

Fig. 3 shows the second variant of the implementation of a valid useful model, which, in comparison with the first variant (Fig. 1), additionally contains: a speed regulator 15 of the flue gas flow, which is located at the outlet of the flue gas cleaning circuit 6 in the area of its adjacency to the flue pipe 3 , and the couch 4 additionally contains a rarefaction sensor 16, which is located after the damper 5 on the side of the smoke pipe 3, while the rarefaction sensor 16 is connected at the input to an additional control unit 17, which is connected to the speed regulator 15 of the flue gas flow at the output .

In fig. 4 shows a section of fig. From the smoke pipe C in the zone of the opposite location of the exit of the cleaning circuit b to the exit of the couch 4 in the smoke pipe 3, while in fig. 4 shows the speed regulator 15 of flue gases, which is located in the area of adjacency of the flue gas cleaning circuit 6 to the flue pipe 3.

In fig. 5 conventionally depicts a fragment of fig. 3, which schematically shows P: - rarefaction in front of damper 5 on the side of coke battery 1, Pa, P" - rarefaction after damper 5, on the side of smoke pipe 3, Pa and Re - value of rarefaction of smoke pipe 3, Pa.

Option Me1

The installation of heat treatment and utilization of the heat of flue gases leaving the combustion units, which is shown in fig. 1, works as follows.

During the operation of the coke battery 1, flue gases are formed in the coke ovens 2, which go to the bed 4 through the gas ducts 11: and 112, which are located on the sides of the coke battery 1.

The regulation of rarefaction at the outlet of coke battery 1 is carried out with the help of rarefaction regulators 121 and 122. In the area adjacent to the couch 4 to the flue gas cleaning circuit b, flue gases are removed to the cleaning circuit b using a smoke extractor 8 with a guide device 9. At the same time, with the help of a guide device 9, the rarefaction is regulated in the bed 4 in front of the shutter 5 on the side of the coke battery 1. In the cleaning circuit b, the flue gases enter the recovery boiler 7, where they are thermally neutralized and the heat of the flue gases is utilized. After the boiler-utilizer 7, the neutralized (purified) flue gases go into the flue pipe 3, and due to the fact that the outlet of the cleaning circuit 6 is located opposite the exit of the couch 4 into the flue pipe 3, an aerodynamic support is formed in the couch 4 after the damper on the side of the flue pipe Z , due to which there is a drop in rarefaction after the damper 5 on the side of the smoke pipe C (graph Fig. 2), which as a result leads to a decrease in the differential pressure (AVilgu, see Fig. 2) on the damper 5 and thus leads to a decrease in flow untreated flue gases through the shutter 5 of the sunbed 4 into the smoke pipe 3.

With the help of shut-off valves 10: and 1025, the cleaning circuit 6 is disconnected from the smoke pipe C and the couch 4 during the repair of the cleaning circuit 6.

Data on the vacuum value in front of the shutter 5 on the side of the coke battery 1 is registered using the vacuum sensor 14, while the vacuum data is sent to the control unit 13, which compares the current vacuum value with the specified vacuum value and, based on the received data, generates a control command for the guiding device 9 of the smoke extractor 8 to obtain the calculated (set) value of rarefaction in the bed 4 in front of the gate 5.

The opposite location of the outlet of the flue gas cleaning circuit b of the exit of the sunbed 4 into the smoke pipe C creates an aerodynamic support of the exit of the sunbed 4, which leads to a drop in the amount of vacuum at the exit of the sunbed 4 after the damper 5 from the side of the smoke pipe 3, and this allows reducing the differential pressure on the damper 5 , due to which the flow of untreated flue gases from the sunbed 4 through the shutter 5 into the smoke pipe 3 is reduced.

When using the claimed useful model, the value of rarefaction in the sunbed 4 behind the gate 5 (graph Rm.) from the side of the smoke pipe Z is significantly smaller (Fig. 2) of the rarefaction bo (graph Re.) compared to the rarefaction according to the technical solution of the known state of the art .

Option Me2

According to the second version of the implementation of a valid useful model (Fig. 3), the installation of thermal neutralization and heat utilization of flue gases leaving from fuel combustion units works as follows.

During the operation of the coke battery 1, flue gases are formed in the coke ovens 2, which go to the bed 4 through the gas ducts 11: and 112, which are located on the sides of the coke battery 1.

Regulation of rarefaction in coke battery 1 is carried out with the help of rarefaction regulators 12: and 12". In the area between the coke battery 1 and the shutter 5, in the area where the sunbed 4 is adjacent to the flue gas cleaning circuit 6, flue gases are discharged into the cleaning circuit 6 using a smoke extractor 8 with a guide device 9. At the same time, the guide device 9 is used to regulate the rarefaction in the sunbed 4 in front of the gate 5 on the side of the coke battery 1. In the cleaning circuit 6, the flue gases enter the recovery boiler 7, where they are thermally neutralized. After the boiler-utilizer 7, the neutralized (cleaned) flue gases go into the flue pipe 3. At the outlet of the cleaning circuit 6, in the area adjacent to the flue pipe 3, a speed regulator 15 of the flue gas flow is installed, with the help of which the rate of supply of flue gases from of the cleaning circuit 6 into the smoke pipe C to maintain the specified vacuum after the gate valve 5 on the side of the smoke pipe 3.

Due to the fact that the outlet of the cleaning circuit 6 is located opposite the exit of the couch 4 into the smoke pipe 3, an adjustable aerodynamic support is formed in the couch 4 after the damper 5 on the side of the smoke pipe Z, thanks to which the fall and regulation of rarefaction after the damper 5 on the side of the smoke pipe occurs, which as a result, it leads to a decrease in the difference in the differential pressure on the damper 5 and thus leads to a decrease in the flow of untreated flue gases through the damper 5 of the couch 4 into the smoke pipe 3.

With the help of shut-off valves 10: and 1025, the cleaning circuit 6 is disconnected from the smoke pipe Z and the couch 4 during the repair of the cleaning circuit 6.

Data on the vacuum value in front of the gate valve 5 from the side of the coke battery 1 is registered using the vacuum sensor 14, while the vacuum data is sent to the control unit 13, which compares the current vacuum value with the specified vacuum value and, based on the received data, generates a control command for the guide

From the device 9 of the smoke extractor to obtain the calculated value of the vacuum in the sunbed 4 in front of the gate 5, on the side of the coconut battery 1.

Data on the value of rarefaction in the bed 4 after the damper 5 from the side of the smoke pipe C from the rarefaction sensor 16 are sent to the additional control unit 17, which will compare the current value of the rarefaction with the specified value of the rarefaction and carry out the generation of a control command to the flow regulator 15 to form the specified rate of supply of smoke gases gases into the chimney

From the cleaning circuit b, which allows you to maintain the specified value of vacuum in the couch 4 after the shutter 5 on the side of the smoke pipe 3, and thereby regulate the vacuum drop on the shutter 5, which affects the flow of flue gases through the shutter 5.

An example of implementation

Below are the test results in Tables 1-6, according to the version of the implementation of the useful model, which is shown in Fig. 3. At the same time, it should be noted that the difference in the absolute values of rarefaction АВ--|Рг|-|Р:| on shutter 5 (Fig. 5) was determined as for the known level of technology

AVrgo, as well as for the useful model claimed by AVigu.

Table 1

Rarefaction (Rg) in Absolute difference

How many sunbeds (4) after the slide | Rarefaction | rarefaction values

Rozoi QUANTITY. (5), from the side of the chimney | (P) in a sunbed | АВ-|Р2|-|Р:|, on the liquefaction gate | flue gases,

С, : (3), Pa (4), before (5) Pa (Re) in the smokehouse| which depart from b 5: pipe (3), Pa |coke battery technical "boerom ( ).z. technical (1), thousand m3/g | prototype | solution that eye coke | prototype | solution that ' battery (1), Pa) AVroi | declares declares

AVipu 600 | 7125 | 600 | call 400 | 200 | 20

Table Me1 shows that with a constant amount of flue gases leaving the coke battery 1 and different rarefaction in the flue C, the difference in the absolute values of ANim on the damper was 20 Pa when using the claimed useful model, while when using the known of technical solutions, the difference in the absolute values of ARroy pressures on gate 5 was in the range of 100 Pa to 300 Pa.

Table 2

Rarefaction (P») in the sunbed Difference of absolute

Quantity p 2) U U Rarefaction | values of the rarefaction of the imum gases (4) after the slide (5), from the side (P) in the couch | АВ-|Рг|-|Р:|, on the shutter

Rarefaction | MO! "| smoke pipe (3), Pa and U 7 Bi p r (Re) In the smoke pipe that leave (1), in front of (5), Pa - and from the coke. damper (5), with the technical pipe (3), Pa .. -I technical - .batteries (1), the nearest solution, the side of the coke | prototype | decision that thousands of mZ/h analogue r Щ batteries (1), Pa| AVroi | declared declared

AVipu 600 | 7125 | 600 | from 80 | 400 | 200 |YUKH th 600 | 700 | 60 | from 30 | from 50 | 250 | Another 20,600 | 80 | 60 | 280 | from 00 | from 00 | 20 5

Table Me2 shows that with different amounts of flue gases leaving the coke battery 1 and constant rarefaction in the flue C, the difference in the absolute values of AVim. on gate 5 was 20 Pa when using the claimed useful model, while when using known technical solutions, the difference in the absolute values of AVRroi rarefaction on gate 5 was 300 Pa to 400 Pa.

Table C

Number of chimneys. Rarefaction (Pi) in Feed rate . y y Rarefaction (Rg) in flue gases with

The rarefaction of the gases that leave: the bed (4), in front of the bed, and the bed (4) after the cleaning circuit (Re) In the smoke room from the coke room by the shutter (5), on the side. . and sliding door (5), from the side. . (6) flue gases in the pipe (3), Pa | batteries (1), thousand tons of coke battery pipes (1), b ma/h of smoke pipe (3), Pa pa smoke pipe (3), m/s 7600 1771125 | 380 | 77717117400 |7771711249 0

It can be seen from the table MeZ3 that with a constant amount of flue gases leaving the coke battery 1 and different rarefaction in the flue pipe 3, when using the proposed useful model, it is possible to regulate the difference in rarefaction on the damper 5 due to the change in the rate of supply of flue gases from the circuit cleaning 6 into the smoke pipe 3. The absolute difference of vacuums on the shutter 5 when using a valid useful model was obtained much less than the absolute difference of vacuums when using the well-known technical solution of Argo. At the same time, it should be additionally pointed out that using a valid useful model it is possible to maintain and adjust the working range of the absolute difference in rarefaction (ANipll.-) on the shutter 5 when using a valid useful model.

The difference in the absolute values of ANim. on gate 5 was 20 Pa when using the claimed useful model, while when using known technical solutions, the difference in the absolute values of AVRrgoi rarefaction on gate 5 was in the range of 100 Pa to 300 Pa.

Table 4

Number of chimneys. Rarefaction (Pi) in Feed rate . y : Rarefaction (Rg) in flue gases from

Rarefaction of gases, which: couchette (4), before which . and couchette (4) after the cleaning circuit (Re) in the smoke house depart from the shutter (5), from the side. . eat damper (5), from the side and - (6) flue gases in the pipe (3), Pa | coke battery and coke battery (1),

From smoke pipe (3), Pa smoke pipe (3), (1), thousand mz/h Pa m/s 600 | 125 1777717 360777 1777171711880 |. 25 2 sh- 600 | 100 units7777171717117320777771771717171118340 | 273 600 | 80 yuyuyuyuyu| RF 2gvo | 300 17111292 2

It can be seen from table Me4 that with different amounts of flue gases leaving the coke battery 1 and a constant rarefaction in the flue pipe C, when using the proposed useful model, it is possible to regulate the differential pressure on the damper 5, thanks to the change in the rate of supply of flue gases from the circuit cleaning 6 in the smoke pipe 3.

Table 5

The number of cleaned flue gases, which

Rarefaction | The amount of flue gases fed to recirculation in the sunbed (4) . and .| Position With (Re) In the smoke | which depart from coke thousand m3/h. and From the gate (5) - - the prototype is declared 7600 | ...yurururururDrl100 (closed | 50 2 шшЩщ | (BM 24 /:/

NO NNYA lm NENYA OO NNYA open 600 | ..юЮюююрюлуоо 0 |open/ | 40 | 77/24

It can be seen from table Me5 that with different amounts of flue gases leaving the coke battery 1 and constant rarefaction in the flue C when using the claimed useful model, the recirculation of purified flue gases in the bed is ensured. When using a known technical solution, recirculation is ensured in the closed and slightly open position of the shutter 5. In the open position of the shutter 5, the flow of untreated flue gases of 4.0 thousand m3/g into the smoke pipe through the couch occurs.

Table 6

The number of cleaned flue gases, which

Rarefaction | The amount of flue gases fed to recirculation in the sunbed (4) . and -.| The position of Z (Re) in the smoke | which depart from the coke thousand mZ/g. and From the gate (5) - - the prototype is claimed 7600 1777777171717101100 0 slightly open// 30 | -( 24 g Dzh 2 F 7500 |1777717171717171780 0 |open// | 20 | -:( (24 Dzh s

It can be seen from the Mob table that with a different amount of flue gases leaving the coke battery 1 and a different rarefaction in the flue pipe 3, when using the claimed useful model, the given recirculation of purified flue gases in the bed is ensured. When a known technical solution is used, in the open position of the damper 5, a flow of untreated flue gases of 2.0 thousand m3/g into the flue 3 occurs.

It is understood that the two best possible implementations of a valid utility model are set forth above, and those skilled in the art may modify, improve upon the valid utility model, and find additional applications thereof. It is clear that a valid useful model can be applied to ensure shock-free operation of a fuel-burning unit (coke battery) in the open position of the damper in the event of an emergency stop of the flue gas cleaning circuit.

A valid useful model can be successfully implemented in the above-mentioned Ukrainian patent No. 85778 with an additional bypass channel that connects the cleaning circuit with the couch in front of the slide on the side of the fuel-burning unit.

Therefore, it is clear that the claimed utility model is not limited to the specific variants that have been set forth in the actual description and depicted in the drawings.

Technical result

The technical result of the claimed useful model is: - reduction of the flow of untreated flue gases through the sunbed damper into the smoke pipe in all possible positions of the damper (closed, slightly open and fully open), which is located in the area where the sunbed is adjacent to the smoke pipe; - maintenance and regulation of the specified consumption of purified flue gases for recirculation at different positions of the damper (closed, slightly open and fully open), which is located in the area where the sunbed is connected to the smoke pipe.

Claims (1)

15 FORMULA OF THE USEFUL MODEL The method of operation of the installation of thermal neutralization and utilization of the heat of flue gases leaving from fuel-burning units, which includes: the discharge of flue gases from at least one fuel-burning unit into the couch, the outlet 20 of which is connected to the smoke pipe and contains a damper, the removal of the mentioned of flue gases from the bed in the area between the fuel-burning unit and the damper into the flue gas cleaning circuit with subsequent neutralization of flue gases in the boiler-utilizer, the discharge of flue gases from the cleaning circuit into the smoke pipe, which is distinguished by the fact that 25 carries out the discharge of flue gases from the flue cleaning circuit gases into the smoke pipe opposite the mentioned outlet of the sunbed, and also carry out the regulation of rarefaction in the sunbed after the mentioned damper from the side of the smoke pipe by changing the speed of supply of flue gases from the mentioned cleaning circuit to the smoke pipe. And ha! shk 4 I a and NKU z: b KU i Y N Z i; Y. x E Z xx - wai shi shi : ! or | ; 4 - shk va nnnnnnnne nn ty mezh shin ukyumkyutyuoYA NOT thistles and yus sodi i x min! А / тя Я и ha fekah vych zhov vy Z gr Kuzhnzhikyu ZHE 13 y z | t : in Z i YAN i in Zh V - x I Zh X a zeuU / Her she M 1, z Z : ; in with 3 Ki son I "I still how. WITH That, in Y and | gi same ZK b | in, shi I R. gly SHE EE "VE Ii bony KE ri y. and in I voi 0 -550- I ! 550 | ! In all Kk and ! or ! and g: a la ree and; "NK. 125 la and ; in | X and Y - | I shin she ny they she MO I 4 sh ooo Vezelozanui harbor Y Kk iorezayuanooo ee ankavynchnoY o ban, ny shi sh Shk. Ж ше Кк и M му А / Іє жу п и / и / num m Beh pens si 123 Ki 3 / | | 8 | i 43 she shchi Y Z nn nnyi g. Z y shk 15 Y YW y X i Z hy shk y r Uvv km r "ng. 4 Ro me Kak і 4 і: NI Sho і still o I І; and Hooks "Ra. Ian 5