CN112961686A - Exchange transmission system and method capable of remotely switching types of coke oven heating gas - Google Patents
Exchange transmission system and method capable of remotely switching types of coke oven heating gas Download PDFInfo
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- CN112961686A CN112961686A CN202110301719.9A CN202110301719A CN112961686A CN 112961686 A CN112961686 A CN 112961686A CN 202110301719 A CN202110301719 A CN 202110301719A CN 112961686 A CN112961686 A CN 112961686A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/06—Heating of coke ovens with combustible gases in coke ovens suitable for the use of lean gas or rich gas
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
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Abstract
The invention relates to an exchange transmission system and method capable of remotely switching types of coke oven heating gas. Comprises a lean gas exchange transmission device, a rich gas exchange transmission device, an air exchange transmission device and an exhaust gas exchange transmission device. The exchange transmission system realizes the timing exchange and the opening and closing of the heating airflow of the coke oven through the opening and closing of equipment such as a driving oil cylinder, an exchange cock, an air inlet box, a coal gas inlet box, a waste gas disc and the like which are matched with the exchange transmission system. The lean gas exchange transmission device realizes the timing exchange and the opening and closing of the lean gas by controlling the opening and closing of the lean gas exchange cock; the rich gas exchange transmission device realizes the timed exchange and opening and closing of the rich gas by controlling the opening and closing of the rich gas exchange cock; the transmission devices are independent from each other, the mutual influence is avoided, the structure and the operation are simple, the mutual remote switching of rich gas heating and lean gas heating can be realized, and the automatic timing reversing of the gas flow direction of ascending gas flow and descending gas flow in a duplex flue of the coke oven can be realized every 20-30 minutes.
Description
Technical Field
The invention belongs to the technical field of coke ovens, and particularly relates to an exchange transmission system and method capable of remotely switching the type of coke oven heating gas.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The coke oven heating mainly uses coal gas and air to carry out combustion heat supply in a coke oven combustion chamber, and the heating coal gas can adopt rich coal gas such as coke oven gas with high calorific value, and can also adopt lean coal gas such as blast furnace gas, producer gas and the like with low calorific value. In consideration of the high quality and the multifunctionality of the coke oven gas, the coke oven of a general combined iron and steel enterprise mostly adopts the blast furnace gas for heating, but the blast furnace has the conditions of damping down or failure and the like, and the coke oven needs to be switched to the coke oven gas for heating at the moment, so the modern coke oven mostly adopts two sets of heating systems of lean gas and rich gas, and the type of the heating gas is switched according to the production requirement.
When lean gas such as blast furnace gas is used for heating, the blast furnace gas enters a heat storage chamber of a coke oven through a waste gas shutter for preheating, enters an ascending gas flow combustion chamber vertical flame path through a chute, enters an ascending gas flow combustion chamber vertical flame path through the waste gas shutter, the heat storage chamber and the chute, and is converged and combusted in the combustion chamber vertical flame path, and generated waste gas enters a descending gas flow vertical flame path through a cross hole at the top of the vertical flame path, then enters a flue through the chute, the heat storage chamber and the waste gas shutter and is discharged through a chimney.
When rich gas such as coke oven gas is used for heating, the coke oven gas does not need to be preheated and directly enters the vertical flame path of the combustion chamber through the brick gas path, and is converged and combusted with air entering through the waste gas shutter, the heat storage chamber and the chute in the vertical flame path of the combustion chamber, and the discharge path of the generated waste gas is the same as that of the generated gas during the combustion of blast furnace gas.
The components and the heat productivity of the rich gas and the lean gas are greatly different, the flow rates of the rich gas and the lean gas and the air quantity matched with the rich gas and the lean gas are greatly different when the coke oven is heated, the rich gas of a traditional coke oven exchange transmission system is controlled by an exchange cock, the lean gas is controlled by a waste gas lump in a waste gas shutter, and the air quantity is controlled by a gas heat storage chamber air door and an air heat storage chamber air door in the waste gas shutter.
When the rich gas is used for heating, the gas regenerator air door and the air regenerator air door of the waste gas shutter are all opened to admit air, and when the lean gas is used for heating, the gas regenerator air door of the waste gas shutter is closed and the air regenerator air door is opened to admit air. Meanwhile, the air quantity required by rich gas heating and lean gas heating is different, and when the two different gas heating are switched, the area of an air inlet of an air heat accumulating chamber air door of the waste gas shutter needs to be adjusted. Therefore, when two kinds of coal gas are actually switched, the adjustment of the linkage of the opening and closing of the coal gas regenerator air door and the air regenerator air door on the waste gas shutter needs to be realized, the area of an air inlet of the air regenerator air door of the waste gas shutter needs to be adjusted, the replacement workload is large, and the operation is time-consuming and labor-consuming.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide an exchange transmission system and method capable of remotely switching the type of coke oven heating gas.
In order to solve the technical problems, the technical scheme of the invention is as follows:
in a first aspect, an exchange transmission system capable of remotely switching the type of coke oven heating gas comprises a lean gas exchange transmission device, a rich gas exchange transmission device, an air exchange transmission device and an exhaust gas exchange transmission device. The exchange transmission system realizes the timing exchange and the opening and closing of the heating airflow of the coke oven through the opening and closing of equipment such as a driving oil cylinder, an exchange cock, an air inlet box, a coal gas inlet box, a waste gas disc and the like which are matched with the exchange transmission system. A driving oil cylinder corresponds to a pull rod and a balance weight, the driving oil cylinder is connected with the balance weight through the pull rod, and the lean gas exchange transmission device realizes the timing exchange (ascending and descending) and the opening and closing of lean gas by controlling the opening and closing of a lean gas exchange cock; the rich gas exchange transmission device realizes the timed exchange (ascending and descending) and the opening and closing of the rich gas by controlling the opening and closing of the rich gas exchange cock; the air exchange transmission device realizes the timing exchange (ascending and descending) and the opening and closing of the air through the opening and closing of the air inlet box; the exhaust gas exchange transmission device realizes the timing exchange (ascending and descending) and the opening and closing of the exhaust gas by controlling the opening and closing of the exhaust gas disc.
The lean gas exchange transmission device, the rich gas exchange transmission device, the air exchange transmission device and the waste gas exchange transmission device respectively realize independent control transmission. One driving oil cylinder corresponds to one pull rod and one balance weight, and each exchange transmission brace is mutually independent, simple in structure and convenient to operate.
In a second aspect, the method for remotely switching the heating gas types by using the exchange transmission system comprises the following specific steps:
according to the requirements of the types of the heating coal gas, selecting rich coal gas or lean coal gas to heat;
rich gas heating: one driving oil cylinder piston rod contracts to control half of the number of the rich gas exchange cocks of the whole furnace to be opened, and the other driving oil cylinder loosens to control the other half of the number of the rich gas exchange cocks of the whole furnace to be closed;
meanwhile, in the air exchange transmission device, one driving oil cylinder controls half of the air (coal gas) inlet boxes to be opened, air is introduced into the heat storage chamber, and the other half of the air (coal gas) inlet boxes are controlled to be closed;
heating lean gas: one driving oil cylinder piston rod contracts to control half of the lean gas exchange cocks of the whole furnace to be opened, and the other driving oil cylinder loosens to control the other half of the lean gas exchange cocks of the whole furnace to be closed;
meanwhile, the air exchange transmission device drives the air pull rods corresponding to the air heat storage chambers to open the air inlet boxes of the air heat storage chambers and close the other half of the air inlet boxes;
when heating, the waste gas exchange transmission device drives the corresponding pull rod, opens the corresponding waste gas disc, and discharges waste gas.
One or more technical schemes of the invention have the following beneficial effects:
the exchange transmission system controls the whole-furnace gas flow, the air flow and the waste gas flow to flow according to the heating requirement of the coke oven through the matching action of the pull rod, the balance weight and the oil cylinder, so that the requirement of gas flow between adjacent vertical flues is met, and the automatic timing reversing of ascending gas flow and descending gas flow according to the gas flow direction of 20-30 minutes is met.
The transmission devices are mutually independent, the structure and the operation are simple, the air transmission, the lean gas transmission, the rich gas transmission and the waste gas transmission are mutually independently controlled and are not restricted, and the discontinuity of the work of the whole system caused by mutual correlation and mutual influence in the operation process is avoided. Meanwhile, the remote automatic switching of heating of rich gas and lean gas can be realized;
the manual operation required when the coke oven heating gas type is changed is greatly saved, the automation level is improved, the labor intensity is reduced, the labor efficiency is improved, and the safety is good.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.
FIG. 1 is a block diagram of an exchange drive system for remotely switching the type of coke oven heating gas;
the device comprises a combustion chamber 1, a combustion chamber 2, a vertical flame path 3, a gas regenerator 4, an air regenerator 5, a waste gas disc 6, a driving oil cylinder 7, a pull rod 8, a balance weight 9, a lean gas exchange cock 10, a rich gas exchange cock 11, a gas channel 12, a carrying rod 13, an air inlet box 14 and a gas inlet box;
the drawing comprises a driving oil cylinder C1, a driving oil cylinder C2, a driving oil cylinder C3, a driving oil cylinder C4, a driving oil cylinder C5, a driving oil cylinder C6, a driving oil cylinder C7, a driving oil cylinder C8, a driving oil cylinder C9 and a driving oil cylinder C10.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In a first aspect, an exchange transmission system capable of remotely switching the type of coke oven heating gas comprises a lean gas exchange transmission device, a rich gas exchange transmission device, an air exchange transmission device and an exhaust gas exchange transmission device. The exchange transmission system realizes the timing exchange and the opening and closing of the heating airflow of the coke oven through the opening and closing of equipment such as a driving oil cylinder, an exchange cock, an air inlet box, a coal gas inlet box, a waste gas disc and the like which are matched with the exchange transmission system;
the lean gas exchange transmission device realizes the timing exchange (ascending and descending) and the opening and closing of the lean gas by controlling the opening and closing of the lean gas exchange cock; the rich gas exchange transmission device realizes the timed exchange (ascending and descending) and the opening and closing of the rich gas by controlling the opening and closing of the rich gas exchange cock; the air exchange transmission device realizes the timing exchange (ascending and descending) and the opening and closing of the air through the opening and closing of the air inlet box; the exhaust gas exchange transmission device realizes the timing exchange (ascending and descending) and the opening and closing of the exhaust gas by controlling the opening and closing of the exhaust gas disc.
In some embodiments of the invention, the lean gas exchange train comprises two exchange tie rods (typically distinguished by red and green), a spanner, a counterweight, etc. The tail end of the pull rod is connected with a balance weight, the initial end of the pull rod is connected with a driving oil cylinder, the pull rod is connected with each lean gas exchange cock through each moving rod, and the opening and closing of each exchange cock are realized through the interaction of the oil cylinder and the balance weight, so that the timed exchange and opening and closing of the lean gas ascending airflow and the lean gas descending airflow are controlled.
In some embodiments of the invention, an air inlet box and a gas inlet box are respectively arranged at the inlets of the gas regenerator and the air regenerator, the air inlet box and the gas inlet box are both connected with an air exchange transmission device, when rich gas is heated, the gas regenerator and the air regenerator both carry air, and the air exchange transmission device controls the gas inlet box and the air inlet box to be opened and closed at regular time so as to realize the exchange of air flow; when the lean gas is heated, the lean gas flows through the gas heat storage chamber, the air flows through the air heat storage chamber, and the air exchange transmission device only controls the opening and closing of the air inlet box to realize the exchange of air flows.
In some embodiments of the present invention, a plurality of vertical flues are disposed inside the combustion chamber, each two adjacent vertical flues form a pair of duplex flues, the tops of the duplex flues are communicated with each other through crossing holes, and the bottoms of the duplex flues are communicated with each other through circulation holes.
In some embodiments of the invention, each riser in the combustion chamber communicates with each lower regenerator through a chute, wherein a single riser communicates with one pair of regenerators (an air regenerator and a gas regenerator forming a pair), and a double riser communicates with the other adjacent pair; meanwhile, each pair of regenerators is respectively communicated with the two combustion chambers at the upper part.
In some embodiments of the invention, the rich gas exchange drive comprises two exchange rods (typically distinguished by red and green), a carrier rod, a counterweight, etc. The tail end of the pull rod is connected with a balance weight, the starting end of the pull rod is connected with a driving oil cylinder, the pull rod is connected with the rich gas exchange cocks through the moving rods, the on-off of the exchange cocks is realized through the interaction of the oil cylinder and the balance weight, and the timed exchange and the on-off of the rich gas ascending air flow and the rich gas descending air flow are further controlled.
In some embodiments of the invention, the rich gas exchange drive is connected to a vertical flue that is connected to a plurality of combustion chambers.
In some embodiments of the invention, the air exchange drive includes four exchange rods (two red and two green), chains, counterweights, etc. The tail end of each pull rod is connected with a balance weight, and the starting end of each pull rod is connected with a driving oil cylinder. Wherein, two pull rods are a set of and are used when being matched with rich gas for heating. When the rich gas is heated, the gas heat accumulation chamber and the air heat accumulation chamber all move air, so that the two pull rods are connected with the gas inlet box air door and the air inlet box air door through the chains and control the opening and the closing of the gas inlet box air door and the air inlet box air door, and the timed exchange of air flow when the rich gas is heated is realized. The other two pull rods are in a group and are matched with lean gas for heating, and the pull rods are connected with the air doors of the air inlet boxes through chains and control the opening and closing of the air doors of the air inlet boxes, so that the timed exchange of air flow during the heating of the lean gas is realized.
In some embodiments of the invention, the exhaust gas exchange actuator comprises two exchange rods (distinguished by red and green), chains, counterweights, etc.; the tail end of the pull rod is connected with the balance weight, the starting end of the pull rod is connected with the driving oil cylinder, the pull rod is connected with each exhaust disc through a chain, and the opening and the closing of each exhaust disc are realized through the interaction of the oil cylinder and the balance weight.
In some embodiments of the invention, the weight of the counterweight is proportional to the number of chambers.
In a second aspect, the method for remotely switching the heating gas types by using the exchange transmission system comprises the following specific steps:
according to the requirements of the types of the heating coal gas, selecting rich coal gas or lean coal gas to heat;
rich gas heating: one driving oil cylinder piston rod contracts to control half of the number of the rich gas exchange cocks of the whole furnace to be opened, and the other driving oil cylinder loosens to control the other half of the number of the rich gas exchange cocks of the whole furnace to be closed;
meanwhile, in the air exchange transmission device, one driving oil cylinder controls half of the air (coal gas) inlet boxes to be opened, air is introduced into the heat storage chamber, and the other half of the air (coal gas) inlet boxes are controlled to be closed;
heating lean gas: one driving oil cylinder piston rod contracts to control half of the lean gas exchange cocks of the whole furnace to be opened, and the other driving oil cylinder loosens to control the other half of the lean gas exchange cocks of the whole furnace to be closed;
meanwhile, the air exchange transmission device drives the air pull rods corresponding to the air heat storage chambers to open the air inlet boxes of the air heat storage chambers and close the other half of the air inlet boxes;
when heating, the waste gas exchange transmission device drives the corresponding pull rod, opens the corresponding waste gas disc, and discharges waste gas.
Description of the overall structure of the exchange drive system:
the exchange transmission system comprises a lean gas exchange transmission device, a rich gas exchange transmission device, an air exchange transmission device and an exhaust gas exchange transmission system which are mutually independent, wherein the lean gas exchange transmission device is used for controlling the input or the closing of lean gas, the rich gas exchange transmission device is used for controlling the input or the closing of rich gas, the air exchange transmission device is used for inputting or closing air, and the exhaust gas exchange transmission device is used for controlling the exhaust or the closing of exhaust gas.
The inside of combustion chamber sets up a plurality of vertical flame paths 2, and every two adjacent vertical flame paths constitute a pair of fire paths, and 2 tops of pair fire paths communicate each other through strideing the hole, and 2 bottoms of pair fire paths communicate each other through the circulation hole, and one is found the flame path 2 and is for the air current that descends when being updraft, and coal gas and air burn in updraft found the flame path, and the waste gas gets into downdraft through strideing the hole and found the flame path after the burning. Meanwhile, a small amount of waste gas enters the updraft vertical flue through the circulation holes, so that the flame stretching effect is achieved, and the high-direction heating uniformity is improved. And exchanging the ascending air flow and the descending air flow in the duplex flame path every 20-30 minutes.
Each vertical flame path 2 in the combustion chamber is communicated with each heat accumulation chamber at the lower part through a chute 11, wherein a single vertical flame path is communicated with one pair of heat accumulation chambers (an air heat accumulation chamber and a coal gas heat accumulation chamber form a pair), and a double vertical flame path is communicated with the other adjacent pair of heat accumulation chambers. Meanwhile, each pair of regenerators is respectively communicated with the two combustion chambers at the upper part.
Namely, as described above, the replacement and setting of the ascending and descending airflows of the adjacent double-coupled flues 2 are achieved. And lean gas, rich gas, air and waste gas are independently controlled.
The lean gas exchange transmission device, the rich gas exchange transmission device, the air exchange transmission device and the waste gas exchange transmission device respectively comprise a plurality of driving oil cylinders 6, a plurality of pull rods 7, a plurality of balance weights 8 and the like, the driving oil cylinders 6 are connected with the balance weights through the pull rods, and each transmission device is mainly used for controlling the opening and closing of air flow through the matching of the driving oil cylinders and the balance weights so as to realize air inlet and closing.
The inlets of the gas regenerator 3 and the air regenerator 4 are respectively provided with an air inlet box 13 and a gas inlet box 14, the air inlet boxes are connected with an air exchange transmission device, and the gas inlet boxes are connected with a lean gas exchange transmission device. The gas enters the inlet box and then enters the regenerator.
When one group of the adjacent heat storage chambers is used for air intake, the other group of the adjacent heat storage chambers is used for air exhaust, so that the waste gas exchange transmission device is controlled to selectively open the plug valve for air exhaust.
The weight of the counterweight is proportional to the number of regenerators provided. When the number of the combustion chambers is different, different weights of the balance weights need to be set, so that the air inlet or the closing of the plurality of the regenerative chambers can be controlled simultaneously.
Each vertical flue is respectively provided with an air inlet at the lower part and the upper part, and each air inlet is respectively connected with an air regenerator. The air inlets are provided at the upper and lower portions to prevent the upper portion from burning an insufficient amount of air.
In the following, in particular, each structure of the switching transmission system performs the operation process in the method of switching gas:
the lean gas exchange transmission device mainly comprises two exchange pull rods (distinguished by red and green), a moving rod, a counterweight and the like. The tail end of the pull rod is connected with a balance weight, the initial end of the pull rod is connected with a driving oil cylinder, and the pull rod is connected with each lean gas exchange cock through each moving rod and controls the opening and closing of each exchange cock. The two pull rods are independent from each other and are respectively connected with a driving oil cylinder (C1 and C2). When the piston rod of the driving oil cylinder C1 contracts to pull up the red exchange pull rod, the pull rod controls half of lean gas exchange cocks 9 of the whole furnace to open through each moving rod; meanwhile, the driving oil cylinder C2 is loosened, and the green pull rod connected with the driving oil cylinder C2 drives the other half of the lean gas exchange cocks 9 of the whole furnace to close under the pull force of the balance weight; therefore, the lean gas exchange transmission device can adjust the opening and closing and the timing exchange of each lean gas exchange cock according to production requirements.
The rich gas exchange transmission device mainly comprises two exchange pull rods (distinguished by red and green), a moving rod, a counterweight and the like. The tail end of the pull rod is connected with a balance weight, the initial end of the pull rod is connected with a driving oil cylinder, and the pull rod is connected with the rich gas exchange cocks through the moving rods and controls the on-off of the exchange cocks. The two pull rods are independent from each other and are respectively connected with a driving oil cylinder (C3 and C4). When the piston rod of the driving oil cylinder C3 contracts to pull up the red exchange pull rod, the pull rod controls half of the rich gas exchange cocks 10 of the whole furnace to open through each moving rod; meanwhile, the driving oil cylinder C4 is loosened, and the green pull rod connected with the driving oil cylinder C4 drives the other half of the lean gas exchange cocks 9 of the whole furnace to close under the pull force of the balance weight; therefore, the rich gas exchange transmission device can adjust the opening and closing of each rich gas exchange cock and the timed exchange according to production needs.
The air exchange transmission device matched with the rich gas heating is mainly used for the rich gas heating and comprises two exchange pull rods (distinguished by red and green), a chain, a counterweight and the like. The tail end of the pull rod is connected with a balance weight, and the initial end of the pull rod is connected with a driving oil cylinder. When rich gas is heated, the gas heat accumulation chamber and the air heat accumulation chamber are all filled with air, so that the pull rod is connected with the gas inlet box air door and the air inlet box air door through the chain and controls the opening and the closing of the gas inlet box air door and the air inlet box air door. The two pull rods are independent from each other and are respectively connected with a driving oil cylinder (C5 and C6). When a piston rod of the driving oil cylinder C5 contracts to pull up the red exchange pull rod, the pull rod controls half of the gas inlet box air doors and air inlet box air doors of the whole furnace to be opened simultaneously through a chain; meanwhile, the driving oil cylinder C6 is loosened, and the green pull rod connected with the driving oil cylinder C6 is pulled by the balance weight to drive the other half of the gas inlet box air doors and the air inlet box air doors of the whole furnace to be closed simultaneously; therefore, the air exchange transmission device matched with the rich gas heating can adjust the opening and closing and the timing exchange of the air doors of the gas inlet box and the air inlet box according to production requirements.
The air exchange transmission device matched with the lean gas heating is mainly used for the lean gas heating and comprises two exchange pull rods (distinguished by red and green), a chain, a counterweight and the like. The tail end of the pull rod is connected with a balance weight, the starting end of the pull rod is connected with a driving oil cylinder, and the pull rod is connected with each air inlet box air door through a chain and controls the air inlet box air door to be opened and closed. The two pull rods are independent from each other and are respectively connected with a driving oil cylinder (C7 and C8). When a piston rod of the driving oil cylinder C7 contracts to pull up the red exchange pull rod, the pull rod controls half of the air inlet box air doors of the whole furnace to be opened through a chain; meanwhile, the driving oil cylinder C8 is loosened, and the green pull rod connected with the driving oil cylinder C8 is pulled by the balance weight to drive the air doors of the other half number of air inlet boxes of the whole furnace to be closed; therefore, the air exchange transmission device matched with the lean gas heating can adjust the opening and closing of the air doors of the air inlet boxes and exchange the air doors at regular time according to production needs.
The waste gas exchange transmission device mainly comprises a red exchange pull rod and a green exchange pull rod (distinguished by red and green), a chain, a counterweight and the like. The tail end of the pull rod is connected with a balance weight, the starting end of the pull rod is connected with a driving oil cylinder, and the pull rod is connected with each waste gas disc through a chain and controls the opening and closing of each waste gas disc. The two pull rods are independent from each other and are respectively connected with a driving oil cylinder (C9 and C10). When a piston rod of the driving oil cylinder C9 contracts to pull up the red exchange pull rod, the pull rod controls half of the waste gas discs of the whole furnace to open through each chain; meanwhile, the driving oil cylinder C10 is loosened, and the green pull rod connected with the driving oil cylinder C10 is driven by the pulling force of the balance weight to close the other half number of waste gas discs 5 in the whole furnace; therefore, the waste gas exchange transmission device can adjust the opening and closing and the timing exchange of each waste gas plate according to production requirements.
The following drive devices and states are used for heating gas:
(1) when rich gas heating is used, the rich gas exchange transmission device, the air exchange transmission device matched with the rich gas heating and the waste gas exchange transmission device work, and red and green heating states are shown in table 1;
(2) when the lean gas is used for heating, the lean gas exchange transmission device, the air exchange transmission device matched with the lean gas heating and the waste gas exchange transmission device work, and the red and green heating states are shown in table 2;
(3) when the coke oven is in a rich gas green heating state and needs to be switched to a rich gas red heating state, the procedure steps shown in the table 3 are carried out;
(4) when the coke oven is in a rich gas red heating state and needs to be switched to a rich gas green heating state, the procedure steps shown in the table 4 are carried out;
(5) when the coke oven is in a green heating state of the lean gas and needs to be switched to a red heating state of the lean gas, the procedure steps shown in the table 5 are carried out;
(6) when the coke oven is in a red heating state of the lean gas and needs to be switched to a green heating state of the lean gas, the procedure steps shown in the table 6 are carried out;
(7) when the coke oven is in a rich gas green heating state and needs to be switched to a lean gas red heating state, the procedure steps shown in the table 7 are carried out;
(8) when the coke oven is in a rich gas red heating state and needs to be switched to a lean gas green heating state, the procedure steps shown in the table 8 are carried out;
(9) when the coke oven is in a green heating state of lean gas and needs to be switched to a red heating state of rich gas, the procedure steps shown in the table 9 are carried out;
(10) when the coke oven is in a lean gas red heating state and needs to be switched to a rich gas green heating state, the procedure steps shown in the table 10 are carried out.
TABLE 1 heating status of rich gas
TABLE 2 lean gas heating regime
TABLE 3 heating State switching
TABLE 4 heating State switching
TABLE 5 heating State switching
TABLE 6 heating State switching
TABLE 7 heating State switching
TABLE 8 heating State switching
TABLE 9 heating State switching
TABLE 10 heating State switching
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An exchange transmission system capable of remotely switching the type of coke oven heating gas is characterized in that:
comprises a lean gas exchange transmission device, a rich gas exchange transmission device, an air exchange transmission device and a waste gas exchange transmission system; the exchange transmission system realizes the timing exchange and the opening and closing of the heating airflow of the coke oven through the opening and closing of a driving oil cylinder, an exchange cock, an air inlet box, a coal gas inlet box and a waste gas disc which are matched with the exchange transmission system;
the lean gas exchange transmission device realizes the timing exchange and the opening and closing of the lean gas by controlling the opening and closing of the lean gas exchange cock; the rich gas exchange transmission device realizes the timed exchange and opening and closing of the rich gas by controlling the opening and closing of the rich gas exchange cock; the air exchange transmission device realizes the timing exchange and the opening and closing of air through the opening and closing of the air inlet box; the waste gas exchange transmission device realizes the timing exchange and the opening and closing of waste gas by controlling the opening and closing of the waste gas disc.
2. The switching transmission system for remotely switching the type of coke oven heating gas according to claim 1, wherein: the lean gas exchange transmission device comprises two exchange pull rods, a moving rod and a balance weight; the tail end of the pull rod is connected with a balance weight, the initial end of the pull rod is connected with a driving oil cylinder, the pull rod is connected with each lean gas exchange cock through each moving rod, and the opening and closing of each exchange cock are realized through the interaction of the oil cylinder and the balance weight, so that the timed exchange and opening and closing of the lean gas ascending airflow and the lean gas descending airflow are controlled.
3. The switching transmission system for remotely switching the type of coke oven heating gas according to claim 1, wherein: the coal gas regenerator and the air regenerator are respectively provided with an air inlet box and a coal gas inlet box at the inlets, the air inlet box and the coal gas inlet box are both connected with an air exchange transmission device, when rich gas is heated, the coal gas regenerator and the air regenerator both take air away, and the air exchange transmission device controls the coal gas inlet box and the air inlet box to be opened and closed at regular time so as to realize the exchange of air flow; when the lean gas is heated, the lean gas flows through the gas heat storage chamber, the air flows through the air heat storage chamber, and the air exchange transmission device only controls the opening and closing of the air inlet box to realize the exchange of air flows.
4. The switching transmission system for remotely switching the type of coke oven heating gas according to claim 1, wherein: the combustion chamber is internally provided with a plurality of vertical flues, every two adjacent vertical flues form a pair of duplex flues, the tops of the duplex flues are mutually communicated through crossing holes, and the bottoms of the duplex flues are mutually communicated through circulating holes.
5. The switching transmission system for remotely switching the type of coke oven heating gas according to claim 4, wherein: each vertical flame path in the combustion chamber is communicated with each heat storage chamber at the lower part through a chute, wherein a single vertical flame path is communicated with one pair of heat storage chambers, and a double vertical flame path is communicated with the other adjacent pair of heat storage chambers; meanwhile, each pair of regenerators is respectively communicated with the two combustion chambers at the upper part.
6. The switching transmission system for remotely switching the type of coke oven heating gas according to claim 1, wherein: the rich gas exchange transmission device comprises two exchange pull rods, a moving rod and a balance weight; the tail end of the pull rod is connected with a balance weight, the starting end of the pull rod is connected with a driving oil cylinder, the pull rod is connected with the rich gas exchange cocks through the moving rods, the on-off of the exchange cocks is realized through the interaction of the oil cylinder and the balance weight, and the timed exchange and the on-off of the rich gas ascending air flow and the rich gas descending air flow are further controlled.
7. The switching transmission system for remotely switching the type of coke oven heating gas according to claim 1, wherein: the air exchange transmission device comprises four exchange pull rods, a chain and a balance weight; the tail end of each pull rod is connected with a balance weight, and the initial end of each pull rod is connected with a driving oil cylinder; wherein, two pull rods are a group and are matched with rich gas for heating;
the other two pull rods are in a group and are matched with lean gas for heating, and the pull rods are connected with the air doors of the air inlet boxes through chains and control the opening and closing of the air doors of the air inlet boxes, so that the timed exchange of air flow during the heating of the lean gas is realized.
8. The switching transmission system for remotely switching the type of coke oven heating gas according to claim 5, wherein: the waste gas exchange transmission device comprises two exchange pull rods, a chain and a balance weight; the tail end of the pull rod is connected with the balance weight, the starting end of the pull rod is connected with the driving oil cylinder, the pull rod is connected with each exhaust disc through a chain, and the opening and the closing of each exhaust disc are realized through the interaction of the oil cylinder and the balance weight.
9. The switching transmission system for remotely switching the type of coke oven heating gas according to claim 8, wherein: the weight of the balance weight is in direct proportion to the number of the carbonization chambers.
10. Method for the remote switching of the heating gas type by means of the exchange transmission system according to any one of claims 1 to 9, characterized in that: the method comprises the following specific steps:
according to the requirements of the types of the heating coal gas, selecting rich coal gas or lean coal gas to heat;
according to the requirements of the types of the heating coal gas, selecting rich coal gas or lean coal gas to heat;
rich gas heating: one driving oil cylinder piston rod contracts to control half of the number of the rich gas exchange cocks of the whole furnace to be opened, and the other driving oil cylinder loosens to control the other half of the number of the rich gas exchange cocks of the whole furnace to be closed;
meanwhile, in the air exchange transmission device, one driving oil cylinder controls half of the air (coal gas) inlet boxes to be opened, air is introduced into the heat storage chamber, and the other half of the air (coal gas) inlet boxes are controlled to be closed;
heating lean gas: one driving oil cylinder piston rod contracts to control half of the lean gas exchange cocks of the whole furnace to be opened, and the other driving oil cylinder loosens to control the other half of the lean gas exchange cocks of the whole furnace to be closed;
meanwhile, the air exchange transmission device drives the air pull rods corresponding to the air heat storage chambers to open the air inlet boxes of the air heat storage chambers and close the other half of the air inlet boxes;
when heating, the waste gas exchange transmission device drives the corresponding pull rod, opens the corresponding waste gas disc, and discharges waste gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110301719.9A CN112961686A (en) | 2021-03-22 | 2021-03-22 | Exchange transmission system and method capable of remotely switching types of coke oven heating gas |
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| CN202110301719.9A CN112961686A (en) | 2021-03-22 | 2021-03-22 | Exchange transmission system and method capable of remotely switching types of coke oven heating gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115895688A (en) * | 2023-01-06 | 2023-04-04 | 中化二建集团有限公司 | Exchange transmission device and exchange transmission method capable of switching waste gas and air in linkage manner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115895688A (en) * | 2023-01-06 | 2023-04-04 | 中化二建集团有限公司 | Exchange transmission device and exchange transmission method capable of switching waste gas and air in linkage manner |
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