WO2010081258A1

WO2010081258A1 - Clean vertical type heat-recovery coking oven

Info

Publication number: WO2010081258A1
Application number: PCT/CN2009/000072
Authority: WO
Inventors: 贺建虎; 贺建红
Original assignee: He Jianhu; He Jianhong
Priority date: 2009-01-13
Filing date: 2009-01-19
Publication date: 2010-07-22
Also published as: CN201395570Y

Abstract

A clean vertical type heat-recovery coking oven,comprises of oven roof system,carbonization chamber coking system,fume flue and chimney system,oven base system,coal-loading fume recovery system and coking oven accessories,which characterized in that:in carbonization chamber coking system,combustion chambers locates on both sides of carbonization chamber, carbonization chamber connects with combustion chambers via the upper smoke-guiding holes set up on the top of both side walls of carbonization chamber,the lower smoke-guiding holes are set up on both sides of mixing chamber located on the bottom of carbonization chamber.It is combustion chamber between upper smoke-guiding hole and lower smoke-guiding hole, combustion chamber consists of many vertical flues,the upper side of which are set up with upper smoke-guiding hole,the lower of opposite side of which are set up with lower smoke-guiding hole,the positions of upper smoke-guiding hole and lower smoke-guiding hole of adjacent vertical flue are interlaced.

Description

Clean vertical heat recovery coke oven

The utility model relates to a coke oven, in particular to a clean vertical heat recovery coke oven.

Background technique

Existing horizontal and vertical heat recovery coke ovens have the following disadvantages to varying degrees:

1. There is only an air inlet hole above the combustion chamber in the top system. The air entering the air and the gas coming from the upper air inlet are mixed at the upper smoke outlet, which is obviously higher than the coal cake in the carbonization chamber. The height, the heat can not be used effectively, the temperature at the top of the coke oven is relatively high. There is no carbonization chamber observation hole and hole cover above the carbonization chamber. The coking condition of the carbonization chamber cannot be observed at any time, and the air intake cannot be adjusted according to the coking condition of each segment of the carbonization chamber.

2. The flame of the combustion chamber in the carbonization chamber coke system is directly in contact with the coal cake in the carbonization chamber, so that the coke in the carbonization chamber is easily burned. The combustion chamber is not separated to form a fire channel, and the positions of the adjacent upper and lower guide ports are not set, and the heat between adjacent carbonization chambers cannot be utilized with each other, resulting in uneven heat. The flow rate of the gas in the mixing chamber 4 to the storage chamber 2 cannot be adjusted, so that the suction force of the carbonization chamber which is different from the chimney is inconsistent.

3. There is no smoke storage room in the smoke storage room of the flue and chimney system. The air conditioning is wide and cannot be matched with air. When the gas volume t is too large, the matching air intake cannot be adjusted. There is no air control valve for the flue of the flue, and the air can not be matched. When the amount of coal gas is too large, the matching air intake cannot be adjusted, so that the gas cannot be fully burned. The opening and closing of the branch sluice gate can only be adjusted manually, and automatic control adjustment cannot be realized. Both the sluice gate and the main sluice gate are reinforced concrete structures. Due to the long-term high temperature of the ram, the service life is very short.

4. The central axis of the heat dissipation channel in the bottom system is parallel to the central axis of the branch flue, and is located below the ground. Only one end is open, and it cannot be naturally ventilated. It can only be forced to draw air, and the heat dissipation effect is not good, especially when the outside air pressure is low. At the same time, the heat dissipation effect is even worse.

5. The recovery pipe in the coal-filled flue gas recovery system is provided with a gate, which is cumbersome to operate. There is only a recovery pipe 26 in the coal-fired flue gas recovery system, and the suction effect is limited when the suction pipe has insufficient suction.

Summary of the invention

The utility model aims to provide a clean type vertical heat recovery coke oven, which solves the problem that the system heat cannot be effectively utilized in the background art, and the intake air amount cannot be adjusted according to the coke formation condition, and the gas cannot be fully ignited. Technical problems such as burning, poor recovery of coal-filled flue gas.

The technical solution of the utility model is as follows:

A clean vertical heat recovery coke oven, comprising a top system, a carbonization chamber coke system, a flue and chimney system, a furnace bottom system, a resistance wall system, a coal charging flue gas recovery system and a coke oven attachment; The carbonization chamber coke formation system comprises a carbonization chamber 7, an upper smoke guide 9, a combustion chamber 5 and a lower smoke outlet 3; the flue and chimney system comprises a smoke storage chamber 2, and a branch flue communicating with the smoke storage chamber 2 20. A branch sluice gate 18 for adjusting the suction of the flue gas in the flue 20 at the exit of the branch flue 20, a main flue of the coke oven 29, and a main flue damper disposed on the main flue 29 of the coke oven The top 30 system includes a top body 10, an air inlet 12, and an air intake regulating valve 13; the coal-filled flue gas recovery system includes a recovery duct 26, one end of the recovery duct 26 The bottom of the coke oven is connected to the main flue 29, and the other end is a coal-filled smoking port 2602. The bottom system includes a bottom body 21, a heat-dissipating horizontal passage 23 disposed at a lower portion of the carbonization chamber 7 and communicating with the atmosphere at both ends, and a heat dissipation chimney 15 in which the heat dissipation horizontal passage 23 communicates; the special feature is that: the carbonization chamber is formed into a coke system Combustion chamber 5 positioned on both sides of the carbonization chamber 7, the carbonization chamber and the combustion chamber 5 through 7 coking chambers on both sides of the upper portion 7 ^':;: the guide opening 9 communicating smoke, a lower portion of the carbonization chamber 7 is provided with a a mixing chamber 4, the lower air guiding ports 3 are respectively disposed at two sides of the mixing chamber 4, and between the upper air guiding port 9 and the lower air guiding port 3 is a combustion chamber 5; the combustion chamber 5 is at least Three vertical fire passages 28 are formed, one upper side of the vertical fire passage 28 is provided; ": the upper smoke guide port 9 is provided, and the lower portion of the opposite side is provided with a lower guide smoke port 3, adjacent to the vertical fire The positions of the upper smoke guides 9 on the track 28 are staggered with each other, and the positions of the lower smoke guides 3 on the adjacent vertical fire paths 28 are also staggered with each other; the central axis of the heat dissipation horizontal passage 23 and the central axis of the branch flue 20 Vertical.

The smoke storage chamber air regulating valve 22 may be respectively disposed below each of the smoke storage chambers 2 of the flue and chimney system, and the flue tail portion of the other end of the flue duct 20 opposite to the flue gas outlet is disposed There is a flue air conditioning valve 1.

An adjustment brick 27 can be provided at the junction of the mixing chamber 4 and the smoke storage chamber 2 described above.

In the above-described furnace top system, a row of combustion chamber observation holes and hole covers 14 may be provided at portions corresponding to the intake holes 12.

A carbonization chamber observation hole and a hole cover 11 may be disposed above the carbonization chamber 7 described above.

A baffle mechanism 2601 may be disposed at the coal charging vent 2602 of the coal-filled flue gas recovery system 26, and the recovery pipe 26 may be connected to the suction pipe 2503 of the movable smoking car 25 via the flap mechanism 2601. The other end of the suction duct 2503 can be connected to the carbonization chamber observation hole and the hole cover 11 on the carbonization chamber 7.

The specific structure of the movable smoking car 25 described above may be: mainly composed of a movable body 2501, a hydraulic system 2502 disposed on the movable body 2501, and a suction duct 2503; the suction duct 2503 It is an "L"-shaped elbow, and the connection end of the flap mechanism 2601 of the recovery duct 26 is provided with a recovery end seal cover 2504, and the connection end of the carbonization chamber observation hole and the hole cover 11 on the carbonization chamber 7 is provided with an observation hole. The end seal cover 2505; the hydraulic cylinder of the hydraulic system 2502 is in push-fit cooperation with the recovery end seal cover 2504 and the observation hole end seal cover 2505.

The branch damper 18 described above may be a ram having a water circulation cooling pipe 1801 therein.

The shutter hoist 17 described above may be an electric hoist or an electric/manual ram hoist for electric and manual use; and the suction damper 20 may be provided with a suction measuring device 19.

The flap mechanism 2601 described above can be disposed obliquely.

The utility model has the following advantages:

1. The furnace top system adds a combustion chamber observation hole and a hole cover, which can further reduce the combustion point of the air in the air inlet and the coal gas in the carbonization chamber, and reduce the distance by about 300~500mra; The height of the section is the same as the height of the coal cake in the carbonized chamber, which effectively improves the efficiency and uniformity of heating the coal cake. The observation hole and the hole cover of the combustion chamber are convenient for observing the combustion condition in the combustion chamber and the graphite coalescence of the upper smoke outlet. When necessary, the graphite and the hole cover can be manually removed through the combustion chamber observation hole and the hole cover to remove the graphite.

2. The carbonization chamber observation hole and the hole cover added above the carbonization chamber make it easy to observe the maturation condition of each section of the carbonization chamber at any time, which is beneficial to adjust the air intake of each section to prevent the formation of coke, excessive coking and uneven coke formation. And so on.

3. The flame of the combustion chamber in the carbonization chamber coke system is not directly in contact with the coal cake 6 of the carbonization chamber, but the coal cake is heated by the heat radiation and heat conduction of the refractory silica brick, which can effectively eliminate the burning loss of the coke in the carbonization chamber.

4. The junction of the mixing chamber of the carbonization chamber into the coke storage system and the storage chamber is provided with regulating bricks for regulating the flow of gas to the storage chamber of the mixing chamber to ensure the entire coke oven, regardless of the distance from the chimney, each carbonization The suction of the room is basically the same.

6. Add a smoke storage chamber air regulating valve below the smoke storage chamber of the flue and chimney system. When the gas volume of a certain smoke storage chamber is too large and the air volume does not match, it can be increased by adjusting the air conditioning valve of the smoke storage chamber. The smoke storage The air intake of the room, that is, the adjustment of the secondary air intake, achieves a reasonable match between the gas and the air, maximizes clean combustion, and reduces the emission of polluting gases. . . .

7. A flue air conditioning valve is added to each flue of the flue and chimney system. When the amount of gas in a branch flue is too large and does not match the amount of air, the air can be adjusted by adjusting the flue. In order to increase the air intake of the flue, the air intake is adjusted three times to ensure that all the gas is fully burned, generating the highest efficiency heat, and providing the maximum heat source for the subsequent heating boiler.

8. The electric/manual sluice hoist in the flue and chimney system can realize the automatic control of the flue suction by the computer, and manually adjust the sluice gate in the emergency such as power failure to effectively ensure the normal suction of the coke oven.

9. Both the flue damper and the main flue ram of the flue and chimney system are dampers with water circulation cooling pipes, which can effectively prevent the ram from being damaged due to overheating and prolong its service life.

10. The bottom heat dissipation channel is perpendicular to the axis of the branch flue, and is located above the ground, and has a heat dissipation chimney that communicates with the heat dissipation channel. It can force the air to dissipate heat, and can also be naturally ventilated to maximize heat dissipation, ensuring that the temperature at the bottom of the coke oven is not Will be too high, effectively extending the life of the coke oven.

11. When the smoke of the furnace door is absorbed, the corresponding flap mechanism is opened, which is easy to operate. At the same time, you can use the wind-: machine and mobile smoking car to force the smoke away.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is a schematic view of the structure of the vertical plane of the present invention.

Figure 2 is a schematic view of the structure of the transverse plane of the present invention.

Figure 3 is a schematic view showing the structure of the flue shutter of the present invention.

4 is a schematic structural view of a combustion chamber, a vertical fire passage, and a smoke guiding port of the present invention.

DESCRIPTION OF REFERENCE NUMERALS: 1-branch air conditioning valve, 2-storage chamber, 3-lower smoke outlet, 4-mixing chamber, 5-combustion chamber, 6-coal cake, 7-carbonization chamber, 8-left Resistance wall, 9-upper smoke outlet, 10-top body, 11-carbonization chamber observation hole and hole cover, 12-inlet hole, 13-intake control valve, 14-combustion chamber observation hole and hole cover, 15 - Cooling chimney, 16-right resistance wall, 17-gate hoist, 18-pipe flutter, 1801-water circulation cooling tube, 19-suction measuring device, 20-pipe flue, 21-bottom body, 22-Accumulator air conditioning valve, 23-heat dissipation horizontal channel, 2301-heating vertical channel, 24-door door frame protection board, 25-movable smoking car, 2501-mobile body, 2502-hydraulic system, 2503 - suction pipe, 2504-recovery end seal, 2505-observation Hole end seal cover, 26 - recovery pipe, 2601 - flap mechanism, 2602 - coal loading vent, 27 - regulating brick, 28 - vertical fire, 29 - coke main flue, 30 - main flue ram, 31- Chimney.

detailed description

The vertical coke oven generally refers to a coke oven in which the cross-sectional dimension of the carbonization chamber of the coke oven is larger than the width dimension. Usually, the ratio of the high direction size to the width direction size is 6 to 20. The clean vertical heat recovery coke oven generally refers to a coke oven that realizes the heat recovery function in the structural characteristics of the vertical coke oven. The process characteristics of the clean vertical heat recovery coke oven are: the gas pressure in the carbonization chamber of the coke oven is lower than the external atmospheric pressure, and it is under negative pressure. The gas, air, combustion gas, exhaust gas, dust, etc. inside the coke oven will not go to the coke oven. The outside escapes, so that the purpose of protecting the environment can be achieved. Since the coke oven does not recycle the chemical components in the gas, the gas is directly mixed with the air in the combustion chamber of the coke oven, and then fully burned to generate heat, and the coal is indirectly heated to become coke, and the exhausted hot exhaust gas can be re-entered into the waste heat. The boiler heats the boiler water, and the subsequent process can be used for urban heating or steam turbine power generation. Therefore, the main features of the clean vertical heat recovery coke oven are: non-polluting gas and polluted wastewater discharge, coke burn rate is very low, hot exhaust gas can be used for heating or power generation, to achieve cascade utilization of resources.

Generally, 30 to 45 carbonization chambers and two resistance walls form a coke oven. Each of the two coke ovens is a group and shares one main flue. A group of coke ovens is a separate system. The number of coke ovens is designed according to the requirements of the production volume. The utility model mainly comprises a furnace top system, a carbonization chamber coke system, a flue and chimney system, a furnace bottom system, a resistance wall system, a coal charging flue gas recovery system and a coke oven accessory.

Referring to Figure 1, the main function of the top system is as the upper top cover of the coke oven, providing external air to the coking system of the carbonization chamber 7, observing the coking condition of the carbonization chamber 7, and supporting the movable smoking car in the flue gas recovery system. Wait. The top system mainly comprises a top body 10, an air inlet 12, an air intake regulating valve 13, a combustion chamber viewing hole and a hole cover 14, a carbonization chamber observation hole and a hole cover 11 and the like. Since the length of the coke oven carbonization chamber 7 is different, the number of the inlet holes 12 is different. Generally, each combustion chamber is provided with 20 to 36 air inlet holes 12, and the number of the combustion chamber observation holes and the hole cover 14 is different. The number of the air holes 12 is equal to or slightly smaller than the number of the air inlet holes 12, and the carbonization chamber observation holes and the hole cover 11 of each carbonization chamber generally have 3 to 6 pieces.

In the furnace top system of the present invention, a row of combustion chamber observation holes and a hole cover 14 are respectively added to the portions corresponding to the air inlet holes 12, and the air inlet holes 12 and the combustion chamber observation holes and the hole cover 14 are separated by refractory material. open. The utility model has the advantages that the air mixing point of the air of the air inlet 12 and the gas of the carbonization chamber 7 can be further reduced, and the distance is reduced. The distance is about 300~500mm; the height of the combustion section in the combustion chamber 5 can be made the same as the height of the coal cake in the carbonization chamber 7, so as to effectively improve the efficiency and uniformity of heating the coal cake. The combustion chamber observation hole and the hole cover 14 are also convenient for observing the combustion condition in the combustion chamber 5 and the graphite coalescence at the upper smoke outlet 9 at any time, and the observation hole and the hole cover 14 can be manually passed through the combustion chamber when necessary. The holes remove the coalesced graphite at the upper smoke outlet 9. The carbonization chamber observation hole and the hole cover 11 are added above the carbonization chamber 7, so that the maturation condition of each section of the carbonization chamber 7 can be observed at any time, which is advantageous for adjusting the amount of air enthalpy in each section, preventing formation of coke or excessive coking and formation. Uneven unevenness and the like occur.

The carbonization chamber coke forming system is the core system of the coke oven. Its main function is to ensure that the coal blending can be normally turned into coke after passing through a dry distillation coke process; and to ensure that the coke burn rate is at a minimum, the gas can be fully used in this system. Combustion, the amount of exhaust gas discharged from the mixing chamber can be adjusted accordingly. Referring to Figures 1 and 2, the carbonization chamber coke forming system comprises: a carbonization chamber 7, an upper smoke guide 9, a combustion chamber 5, a lower smoke guide 3, a mixing chamber 4, an adjustment brick 27, and a furnace door frame protection plate 24 Wait. The carbonization chamber 7 is a core component of the carbonization chamber coke formation system, the combustion chamber 5 is located on both sides of the carbonization chamber 7, and the carbonization chamber 7 and the combustion chamber 5 are separated by refractory silicon bricks, and the two are only connected through the upper guide vent 9 Therefore, the flame of the combustion chamber 5 is not directly in contact with the coal cake 6 of the carbonization chamber 7, but the coal cake 6 is heated by the heat radiation and heat conduction of the refractory silica brick, so that the burning of the coke in the carbonization chamber 7 can be effectively eliminated. . A mixing chamber 4 is provided at a lower portion of the carbonization chamber 7 for mixing the hot gas flow from the combustion chamber 5, and heat is radiated through the refractory silica brick at the top of the mixing chamber 4 to heat the bottom portion of the coal cake 6 in the carbonization chamber 7 again.

Referring to FIG. 4, according to the length of the carbonization chamber 7, 20 to 36 upper smoke guides 9 are respectively disposed on both sides of the upper portion of the carbonization chamber 7, and the lower smoke guides 3 are arranged on both sides of the mixing chamber 4, and the upper smoke outlets 9 are provided. Between the lower guide and the lower guide 3 is a combustion chamber 5. The combustion chamber 5 is composed of a plurality of vertical fire passages 28, and the vertical fire passages 28 are separated from each other and are not connected to each other; an upper portion of one side of each of the vertical fire passages 28 is provided with an upper smoke guide port 9, opposite The lower portion of the other side is provided with a lower smoke guide 3; the positions of the upper smoke guides 9 on the adjacent vertical fire passages 28 are staggered, and the positions of the lower smoke guides 3 on the adjacent vertical fire passages 28 are also interdigitated. . That is, an upper smoke outlet 9 and a lower smoke outlet 3 in each of the vertical fire passages 28 are respectively located above and below the vertical fire passage 28, and are respectively located on both sides of the vertical fire passage 28, and adjacent to each other The upper guide port 9 and the lower guide port 3 of the fire path 28 are alternately arranged. The number of the vertical fire guide 28, the upper guide vent 9 and the lower guide 3 are the same. In the normal coke formation process, the thermal energy in the adjacent vertical fire channels 28 can be utilized by each other to ensure that the coke is cokeed uniformly and the quality is stable. Set at the junction of the mixing chamber 4 and the smoke storage chamber 2 There is a regulating brick 27 for adjusting the gas flow rate of the mixing chamber 4 to the smoke storage chamber 2 to ensure the entire coke oven, and the suction force of each carbonization chamber 7 is substantially the same regardless of the distance from the chimney.

The furnace body of the carbonization chamber coke forming system of the utility model should all be constructed of fire-resistant silicon bricks, and the furnace door, the furnace door frame and the protection plate should be made of heat-resistant cast iron or ductile iron or vermicular cast iron material.

The main function of the flue and chimney system is to mix the hot exhaust gases and transport them to the waste heat boiler. The natural suction of the chimney 31 forms the negative pressure of the coke oven carbonization chamber, and the suction of each of the storage chambers and the branch flue can be adjusted. Referring to Figures 1 and 2, the flue and chimney system is composed of: a smoke storage chamber 2, a branch flue 20, a coke oven main flue 29, a chimney 31, a smoke storage chamber air regulating valve 22, and a flue air regulating valve. 1. A cigarette damper 18, a main flue ram 30, a ram hoist 17, a suction measuring device 19, and the like.

The smoke storage chamber air regulating valve 22 is respectively added under each of the smoke storage chambers 2. When the amount of gas in a certain storage chamber 2 is too large and the amount of air does not match, the air conditioning valve 22 can be increased by adjusting the air storage chamber. The air intake of the smoke storage chamber 2, that is, the adjustment of the secondary air intake amount, achieves a reasonable match between the gas and the air amount, and maximizes clean combustion. A flue gas regulating valve 1 is added to the flue tail of the other end of each of the flue pipes 20 opposite to the flue gas outlet. When the amount of gas in a branch flue 20 is too large and does not match the amount of air, the air intake of the flue 20 can be increased by adjusting the flue air conditioning valve 1, and g卩 adjusts the amount of air entering the chamber, ^ The advantage is to ensure that all gas is fully combusted, producing the most efficient heat and providing the maximum heat source for subsequent heating boilers. At the exit of each branch flue 20 is provided a branch damper 18 for adjusting the suction force in the branch flue 20. The branch damper 18 is connected to the ram hoist 17 . The shutter hoist 17 can be an electric starter or an electric or manual hoist. The electric/manual dual-purpose hoist can adjust the cigarette damper 18 in the event of an emergency such as power failure, effectively ensuring the normal suction of the coke oven. The shutter hoist 17 moves up and down to achieve suction adjustment. A suction measuring device 19 is also provided on each of the flue pipes 20, which is combined with the shutter hoisting machine 17, so that automatic computer detection and automatic suction adjustment can be realized.

Referring to Fig. 3, the branch damper 18 and the main flue ram 30 are both rams with a water circulation cooling pipe 1801 therein. By forced pressurization by the external water pump, the water can be circulated in the water circulation cooling pipe 1801 of the ram, and the branch damper plate 18 and the main flue damper 30 are cooled, thereby effectively preventing the ram from being damaged due to overheating, and prolonging Its service life. The body part of the flue and chimney system of the utility model should be constructed of refractory bricks, and the regulating valve should be made of heat-resistant cast iron to adjust the air volume.

The main function of the hearth system is to support the entire coke oven and provide heat dissipation from the bottom of the coke oven. See Figure 1, The bottom system is composed of a bottom body 21, a heat dissipation horizontal passage 23, a heat dissipation vertical passage 2301, a heat dissipation chimney 15, and the like. The lower portion of each of the carbonization chambers 7 is provided with a heat dissipation horizontal passage 23, and the central axis of the heat dissipation horizontal passage 23 is perpendicular to the central axis of the branch flue 20. The heat dissipation horizontal passage 23 is located above the ground to dissipate heat by natural ventilation. The heat dissipation vertical channel 2301 and the heat dissipation chimney 15 which communicate with the heat dissipation horizontal passage 23 are used for forcibly ventilating and dissipating heat, thereby maximizing heat dissipation, ensuring that the temperature at the bottom of the coke oven is not too high, and effectively prolonging the life of the coke oven. The bottom system should be constructed of clay refractory bricks.

The main function of the resistance wall system is to provide the entire coke oven with resistance to thermal expansion at both ends, to prevent deformation of the coke oven due to thermal expansion, and to fix the longitudinal braces. Referring to Figure 1, the resistance wall system consists of: a left resistance wall 8, and a right resistance wall 16. Each coke oven has a side that resists the wall. The resistant wall should be made of heat-resistant reinforced concrete.

The main function of the coal-filled flue gas recovery system is to pump away a small amount of waste coal gas that escapes from the coal-filling side during coal charging and transport it to the main flue of the coke oven for combustion. Referring to FIG. 2, the structure of the coal-filled flue gas recovery system comprises: a recovery pipe 26, a flap mechanism 2601, a coal charging mouth 2602, a movable smoking car 25., a movable body 2501, a hydraulic system 2502, and a suction pipe 2503. , recovery end sealing cover 2504, observation hole end sealing cover 2505, rail 2506, fan, and the like.

One end of the recovery pipe 26 of the coal-filled flue gas recovery system is in communication with the coke oven main flue 29, the other end of the recovery pipe 26 is a coal-filled smoking port 2602, and a flap mechanism 2601 is provided at the coal-filled smoking port 2602. When the smoke at the door of the furnace is absorbed, the corresponding flap mechanism 2601 is opened, and the flap mechanism 2601 above the other furnace doors is closed. The advantage is that the flap mechanism 2601 is installed obliquely, which is easy to operate and facilitates automatic closing.

The movable smoking car 25 is mainly composed of a movable body 2501 and a hydraulic system 2502 and a suction duct 2503 provided on the movable body 2501. The movable body 2501 is disposed on the rail 2506 at the top of the roof body 10 to facilitate movement in the longitudinal direction of the coke oven. The hydraulic system 2502 is composed of a hydraulic pump station, a hydraulic cylinder, and a control system. The suction pipe 2503 is an "L"-shaped elbow, one end of which can be docked with the flap mechanism 2601 on the recovery pipe 26, and the recovery end is provided with a recovery end seal cover 2504, and the other end of the pipe can be viewed from the carbonization chamber on the carbonization chamber 7. The hole cover 11 is butted, and the observation hole end seal cover 2505 is disposed at the joint. The hydraulic system 2502 performs a push fit on the recovery end seal cover 2504 and the observation hole end seal cover 2505. When it is necessary to suck the dust of the door of a certain carbonization chamber 7, the outlet end of the suction pipe 2503 is docked with the flap mechanism 2601 of the recovery pipe 26, and the inlet end is docked with the observation hole of the carbonization chamber and the hole cover 11, The recovery end seal cover 2504 and the observation hole end seal cover 2505 are respectively pushed by the hydraulic cylinder of the hydraulic system 2502. The flap mechanism 2601 is connected to the carbonization chamber observation hole 11 to perform suction of the exhaust gas.

The coal-fired flue gas recovery system of the utility model can realize three ways of pumping waste gas. 1 Using the natural suction of the main flue and the chimney, the waste gas is sucked away by opening the flap mechanism 2601 above the furnace door. 2 Install an air blower in the middle section of the recovery pipe 26 to forcefully remove the waste gas. 3 Using the movable smoking car 25, through the carbonization chamber observation hole and the hole cover 11 on the top of the furnace, the air is forcibly sucked and the waste gas is sucked away.

The coke oven attachment of the utility model is basically the same as the prior art, and mainly comprises a furnace column, a longitudinal bracing bar, a horizontal bracing bar, etc., for preventing excessive thermal deformation of the coke oven along the longitudinal direction of the carbonization chamber, and ensuring that the thermal deformation is reasonable. Within the scope of control. The furnace column should be made of H-shaped steel, the longitudinal strip should be made of flat steel, and the horizontal strip should be made of round steel. At both ends of each brace, fastening means such as a spring and a corresponding nut are provided. At each end of each carbonization chamber, a furnace column is arranged on both sides of the furnace door, and each of the furnace columns is provided with one lower horizontal pulling strip and two upper horizontal pulling strips, and corresponding springs and nuts. Each coke oven is generally provided with 6 to 10 longitudinal braces and corresponding spring and nut fastening components. The coke oven accessories, coal preparation system, tamping machine, push coke loading car, coke and quenching system, and screen coke system equipped with the utility model are the same as the general vertical production and recovery coke oven.

The working process of the utility model is as follows:

(i) When the coal cake 6 is charged into a carbonization chamber 7 of the coke oven, the coke oven should be in the as-state and the negative pressure state, and the internal pressure of the coke oven is lower than the outside air pressure, internal gas, air, and combustion gas. It will not leak, so it will not cause air pollution.

( ϋ ), the coal cake 6 is charged into the carbonization chamber 7. In the process of loading the coal cake 6 into the carbonization chamber 7 of a certain hole, the coal-filled flue gas recovery system is combined with the loading of coal to maximize the recovery of waste gas, thereby achieving the purpose of environmental protection. After the coal is loaded, close the furnace door.

(ii), since the coke oven is at a high temperature, the coal gas naturally escapes from the coal, enters the combustion chamber 5 through the upper smoke outlet 9 in the upper portion of the carbonization chamber 7, and enters the cold air from the intake hole 12 at the top of the coke oven. After mixing, it burns and descends while burning, and simultaneously heats the wall of the combustion chamber 5, which is also the wall of the carbonization chamber 7. After the wall is heated, the coal cake 6 is heated by heat radiation to dry the coal and slowly turn into coke, as shown in Fig. 1. The airflow is indicated. The combustion gas heat of the adjacent carbonization chambers 7 can be borrowed from each other to ensure that the temperature of the entire coke oven is relatively stable.

(iv) After the hot gas stream passes through the combustion chamber 5, it enters the mixing chamber 4 through the lower guide port 3, and at this time, the bottom portion of the coal cake 6 in the carbonization chamber 7 is heated again through the silica brick at the top of the mixing chamber ⁴ . Hot air flow The smoke storage chamber 2 and the branch flue 20 are sent to the main flue and the boiler room for subsequent power generation or heating processes.

The main regulation and control of the utility model: the air inlet hole 12 entering the top air is a single air inlet, and the air volume can be adjusted according to the amount of gas in each carbonization chamber 7, so as to optimize the gas and air. Match the effect. At the junction of the mixing chamber 4 and the smoke storage chamber 2, a regulating brick 27 is provided, which can adjust the gas flow rate of the mixing chamber 4 to the smoke storage chamber 2, and ensure the entire coke oven, regardless of the distance from the chimney, each carbonization chamber 7 The suction is basically the same. In the lower portion of each of the smoke storage chambers 2, a secondary air inlet is provided. For the smoke storage chamber 2 having a large amount of gas and insufficient combustion, the amount of air intake can be artificially increased by the air storage chamber air regulating valve 22. At the end of each branch flue 20, a flue air conditioning valve 1 is provided, that is, a three-way air inlet, and the intake air amount can be artificially increased for a branch flue having a large amount of gas and insufficient combustion. At the exit of each branch flue 20, a shutter hoist 17 and a branch damper 18 are provided, which can automatically control the suction of the balanced coke oven.

The main observation means of the utility model: a combustion chamber observation hole and a hole cover 14 are arranged at the top of the coke oven, and the combustion condition of the combustion chamber 5 and the graphite coalescence of the upper smoke outlet 9 can be observed at any time, and can be processed as needed. The carbonization chamber observation hole and the hole cover 11 are arranged at the top of the coke oven. The coking condition of the carbonization chamber 7 can be observed at any time, and can be processed when needed to prevent the occurrence of coke formation, excessive coking, uneven focus, etc.

Claims

Claim

1. A clean vertical heat recovery coke oven comprising a top system, a carbonization chamber coke system, a flue and chimney system, a hearth system, a wall system, a coal gas recovery system and a coke oven attachment; The carbonization chamber coking system comprises a carbonization chamber (7), an upper smoke guide (9), a combustion chamber (5) and a lower smoke outlet (3); the flue and chimney system comprises a smoke storage chamber (2) a branch flue (20) connected to the smoke storage chamber (2), and a branch flue plate (18) disposed at the exit of the branch flue (20) to adjust the suction of the flue gas in the flue (20) a main flue (36) of the coke oven, a main flue ram (30) and a chimney (31) disposed on the main flue (29) of the coke oven; the top system comprising a top body (10), The intake hole (12) and the intake regulating valve (13); the coal-filled flue gas recovery system includes a recovery pipe (26), and one end of the recovery pipe (26) is connected to the coke oven main flue (29) The other end is a coal charging mouth (2602); the bottom system includes a bottom body (21), a heat dissipation level disposed at a lower portion of the carbonization chamber (7) and both ends are open to the atmosphere. (23) and a heat dissipation chimney (15) communicating with the heat dissipation horizontal passage (23); characterized in that: the combustion chamber (5) of the carbonization chamber coke formation system is located on both sides of the carbonization chamber (7), and the carbonization The chamber (7) is in communication with the combustion chamber (5) through an upper smoke outlet (9) on both sides of the upper portion of the carbonization chamber (7.), and a lower portion of the carbonization chamber (7) is provided with a mixing chamber (4), The lower guides (3) are respectively disposed on two sides of the mixing chamber (4), and the combustion chamber (5) is between the upper cigarette guide (9) and the lower cigarette guide (3); The chamber (5) is composed of at least three vertical fire passages (28), the upper side of the vertical fire passage (28) is provided with an upper smoke guide (9), and the opposite side of the other side is provided with a lower portion. The position of the upper smoke guide (9) on the smoke outlet (3), adjacent to the vertical fire channel (28) is interlaced, and the positions of the lower smoke guides (3) on the adjacent vertical fire channels (28) are also mutually Interlaced; the central axis of the heat dissipation horizontal passage (23) is perpendicular to the central axis of the branch flue (20).

The clean type vertical heat recovery coke oven according to claim 1, wherein: a smoke storage chamber air regulating valve is disposed below each of the smoke storage chambers (2) of the flue and chimney system ( 22), the flue tail of the other end of each of the branch flue (20) opposite to the flue gas outlet is provided with a branch flue air regulating valve (1).

The clean type vertical heat recovery coke oven according to claim 1 or 2, characterized in that: the adjustment brick (27) is provided at the junction of the mixing chamber (4) and the smoke storage chamber (2).

The clean type vertical heat recovery coke oven according to claim 3, wherein: in the top system, a row of combustion chamber observation holes and a hole cover are arranged at a portion corresponding to the air inlet hole (12). (14).

The clean type vertical heat recovery coke oven according to claim 4, wherein a carbonization chamber observation hole and a hole cover (11) are disposed above the carbonization chamber (7).

The clean type vertical heat recovery coke oven according to claim 5, wherein: the coal charging vent (2602) of the coal-filled flue gas recovery system (26) is provided with a flap mechanism (2601) The recovery pipe (26) may be connected to a suction pipe (2503) of the movable smoking car (25) via a flap mechanism (2601), and the other end of the suction pipe (2503) may be combined with a carbonization chamber (7) The upper carbonization chamber observation hole and the hole cover (11) are matched to each other.

The cleaning type vertical heat recovery coke oven according to claim 6, wherein: the movable smoking car (25) comprises a movable body (2501), and is disposed on the movable body (2501) The hydraulic system (2502) and the suction pipe (2503); the suction pipe (2503) is an "L"-shaped elbow, and the connection end of the upper pipe mechanism (2601) of the recovery pipe (26) A recovery end seal cover (2504) is disposed, and a connection end end sealing cover (2505) is disposed at a connection end of the carbonization chamber observation hole and the hole cover (11) on the carbonization chamber (7); the hydraulic system (2502) The hydraulic cylinder is pushed and engaged with the recovery end seal cover (2504) and the observation hole end seal cover (2505).

The clean type vertical heat recovery coke oven according to claim 7, characterized in that: the branch damper (18) is a ram having a water circulation cooling pipe (1801) therein.

The clean type vertical heat recovery coke oven according to claim 8, wherein: the shutter hoist (17) is an electric hoist or an electric/manual ram of electric and manual. A hoist; the suction duct (20) is provided with a suction measuring device (19).

The clean type vertical heat recovery coke oven according to claim 9, wherein said flap mechanism (2601) is disposed obliquely.