CN111944982A - Novel energy-saving consumption-reducing continuous type cast tube annealing furnace system - Google Patents
Novel energy-saving consumption-reducing continuous type cast tube annealing furnace system Download PDFInfo
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- CN111944982A CN111944982A CN202010967718.3A CN202010967718A CN111944982A CN 111944982 A CN111944982 A CN 111944982A CN 202010967718 A CN202010967718 A CN 202010967718A CN 111944982 A CN111944982 A CN 111944982A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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Abstract
The invention relates to the technical field of industrial furnaces, and provides a novel energy-saving consumption-reducing continuous type cast tube annealing furnace system, which comprises: the device comprises a furnace body, a combustion system, a coal gas filtering system and a spraying system; the combustion system is arranged at the front part of the furnace body, the front part of the combustion system is a heating section, and the rear part of the combustion system is a heat preservation section; the combustion system includes: the preheating circulation pipeline and the plurality of burners are arranged on the preheating circulation pipeline; the preheating circulation pipeline is arranged on the furnace wall of the furnace body, the heating section burner adopts a heat accumulating type burner, and the heat insulation section burner adopts a common burner; the coal gas filtration system comprises: the coke oven gas filter system comprises a gas filtering system pipeline and a plurality of coke oven gas filters arranged on the gas filtering system pipeline; the output end of the coal gas filtering system pipeline is connected with the combustion system; the plurality of coke oven gas filters are arranged in parallel. The waste heat of the combustion system can be reused, so that energy is saved and consumption is reduced; the spraying system can realize the quick cooling of the cast pipe after the cast pipe is discharged from the furnace, and the quality of the cast pipe is improved.
Description
Technical Field
The invention relates to the technical field of industrial furnaces, in particular to a novel energy-saving consumption-reducing continuous type cast tube annealing furnace system.
Background
The water-cooled cast pipe annealing furnace is used for spheroidizing annealing of cast iron pipes. The spheroidizing annealing of the ductile cast iron pipe is to carry out annealing treatment on the pipe through heating, heat preservation and quick cooling, eliminate cementite and pearlite generated in the casting process of the pipe and convert a matrix into a matrix structure of the ductile cast iron pipe of ferrite. The heating section is used for heating the pipe fitting to the temperature required by the process within a certain time, entering the heat preservation section, keeping the temperature within a stable temperature range for a certain time to finish the transformation of cementite to ferrite in a metallographic structure, then entering the rapid cooling section, rapidly cooling the temperature to a certain temperature, entering the slow cooling section, and finishing the transformation of pearlite to ferrite at a stable cooling speed. After the pipe fitting is subjected to the heat treatment process, a stable metallographic structure is formed, and the required performance is achieved.
The currently used combustion control system has the following problems: firstly, the heating capacity of the furnace is unstable, so that the temperature uniformity in the furnace is unstable. Secondly, the adjustment of the furnace temperature has certain difficulty, so that the combustion heat of the fuel can not be fully exerted, the furnace temperature lifting time is prolonged invisibly, a large amount of fuel is consumed, and the production direction is faced with huge energy consumption and serious environmental pollution. Thirdly, due to the fact that the conventional production is accelerated in rhythm and limited in production space, the length of a cooling chain behind a furnace cannot be randomly lengthened, the cooling time is short, the cooling distance is short, the temperature of a cast pipe cannot be reduced to an ideal temperature through natural cooling at normal temperature, and the heat treatment quality is affected. And fourthly, the modern biochemistry has higher and higher requirements on the maintenance of equipment.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art and provides a novel energy-saving consumption-reducing continuous type cast tube annealing furnace system, the waste heat of a combustion system can be utilized secondarily, and the energy is saved and the consumption is reduced; the spraying system can realize the quick cooling of the cast pipe after the cast pipe is discharged from the furnace, and the quality of the cast pipe is improved.
The invention provides a novel energy-saving consumption-reducing continuous type cast tube annealing furnace system, which comprises: the furnace comprises a furnace body (1), a combustion system (2), a coal gas filtering system (3) and a spraying system (6);
the combustion system (2) is arranged at the front part of the furnace body (1), the front part of the combustion system (2) is a heating section, and the rear part of the combustion system is a heat preservation section; the combustion system (2) comprises: the preheating circulation pipeline (202) and a plurality of burners arranged on the preheating circulation pipeline (202); the preheating circulation pipeline (202) is arranged on the furnace wall of the furnace body (1), a heat accumulating type burner (206) is adopted as a heating section burner, and a common burner (205) is adopted as an insulation section burner;
the gas filtration system (3) comprises: a gas filtering system pipeline (307) and a plurality of coke oven gas filters (301) arranged on the gas filtering system pipeline (307); the input end of the coal gas filtering system pipeline (307) is connected with a gas supply device, and the output end of the coal gas filtering system pipeline (307) is connected with the combustion system (2); a plurality of coke oven gas filters (301) are arranged in parallel;
the spraying system (6) is arranged behind the furnace body (1); the spraying system (6) comprises: the spraying system comprises a spraying system bracket (601), a spray pipe device and a water supply device; the spraying system support (601) is arranged outside the external furnace conveying chain (5), so that the external furnace conveying chain (5) penetrates through the spraying system support (601); a condenser (604) and a spray pipe device are arranged in the spraying system bracket (601), a water inlet of the condenser (604) is connected with a water supply device, and a water outlet of the condenser (604) is connected with the spray pipe device;
the nozzle arrangement comprises: a top spray device, an upper spray device (602), a lower spray device (603) and a side spray device; the top spraying device, the upper spraying device (602), the lower spraying device (603) and the side spraying device (607) are respectively provided with a plurality of pipelines and nozzles.
Preferably, the combustion system (2) further comprises: a combustion system smoke exhaust pipeline (201), a fan (203) and a heat exchanger (204); the fan (203) is connected with a heat exchanger (204), and the heat exchanger (204) is arranged in the furnace body (1); the heat exchanger (204) is connected with the smoke exhaust system (8) through a smoke exhaust pipeline (201) of the combustion system.
Preferably, the input end of the gas filtering system pipeline (307) is respectively provided with a manual sealing butterfly valve (303) and a pressure gauge (306);
the input end of the gas filtering system pipeline (307) and the front and the back of the coke oven gas filter (301) are respectively provided with an electric blind plate valve (302);
the output end of the gas filtering system pipeline (307) is respectively provided with a pneumatic quick-cut valve (304) and an internal throttling device (305).
Preferably, the coke oven gas filter (301) comprises: a filter housing (308);
the bottom of the filter shell (308) is provided with a filter inlet (309) and the top is provided with a filter outlet (310);
a first layer of filter element and a second layer of filter element (313) are sequentially arranged in the filter shell (308) from bottom to top;
the first layer of filter elements comprises: a mesh bracket (311) and a metal scrap piece (312) arranged on the mesh bracket (311);
the second layer of filter element (313) adopts a metal net.
Preferably, the spraying system bracket (601) is provided with a waterproof color steel plate.
Preferably, the water supply device comprises a water pump (608) and a circulating water pool (609);
the water pump (608) is connected with a circulating water pool (609) and is connected with the condenser (604) through a water inlet pipe (610);
the circulating water tank (609) is connected with the spray pipe device through a water return pipe (611).
Preferably, an in-furnace conveying chain (4) for conveying the casting tube from the front end of the furnace body to the rear end of the furnace body is arranged in the furnace body (1).
Preferably, the casting tube output from the furnace body (1) is input to the spraying system (6) through an external conveying chain (5).
Compared with the prior art, the novel energy-saving consumption-reducing continuous type cast tube annealing furnace system provided by the invention has the following advantages:
1. according to the combustion system, the heat accumulating type burner is adopted in the heating section, the common burner is adopted in the heat preservation section, the combustion heat can be recycled for the second time, the energy is saved, the consumption is reduced, the production cost is reduced, and the production environment is protected.
2. The gas filtering system is provided with a plurality of sets of coke oven gas filters, so that online maintenance can be realized without shutdown treatment. The multiple sets of coke oven gas filters can effectively filter dust, tar and other harmful substances in the gas, realize maintenance without shutdown, protect terminal equipment and prolong the service life of rear line equipment. The gas main pipeline filtering system is provided with a built-in throttling device and a pressure gauge, and the flow and the pressure are monitored.
3. The spraying system is provided with the top spraying device, the upper spraying device, the lower spraying device and the side spraying device, and can quickly and effectively cool the cast pipe through omnibearing spraying, so that the temperature of the cast pipe is reduced to an ideal temperature. The spraying system bracket is provided with a waterproof color steel plate, and forms a semi-surrounding structure for the external conveying chain and the cast pipe, thereby effectively preventing water mist and water vapor from dispersing outwards.
4. When the annealing furnace system works, the cast tube is conveyed into the furnace through the conveying chain in the furnace, is heated through the heating section and is insulated through the combustion insulation section; after the cast pipe is output from the heat preservation section, the cast pipe is rapidly cooled through a quenching section, slowly cooled through a slow cooling section, discharged from the furnace and cooled to finish the annealing process; and the product is fully cooled by a spraying system after being discharged and cooled, so that the product quality can be improved, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a novel energy-saving and consumption-reducing continuous cast tube annealing furnace system provided by the invention;
FIG. 2 is a top view of the novel energy-saving and consumption-reducing continuous cast tube annealing furnace system provided by the invention;
FIG. 3 is a schematic structural view of a combustion system provided by the present invention;
FIG. 4 is a schematic structural diagram of a gas filtering system provided by the present invention;
FIG. 5 is a schematic side view of a gas filtration system provided by the present invention;
FIG. 6 is a schematic top view of the gas filtering system provided by the present invention;
FIG. 7 is a schematic structural view of a coke oven gas filter provided by the present invention;
FIG. 8 is a schematic structural view of a sprinkler system provided by the present invention;
fig. 9 is a schematic side view of the spray system of the present invention.
Reference numerals: 1. a furnace body; 2. a combustion system; 3. a gas filtration system; 4. a conveying chain in the furnace; 5. a transport chain outside the furnace; 6. a spray system; 7. overhauling the platform; 8. a smoke exhaust system; 201. a combustion system flue gas duct; 202. preheating a circulating pipeline; 203. a fan; 204. a heat exchanger; 205. a common burner; 206. a regenerative burner; 301. a coke oven gas filter; 302. an electric blind plate valve; 303. manually sealing the butterfly valve; 304. a pneumatic quick-cut valve; 305. an internal throttle device; 306. a pressure gauge; 307. a gas filtration system pipeline; 308. a filter housing; 309. a filter inlet; 310. a filter outlet; 311. a mesh bracket; 312. a metal scrap piece; 313. a second layer of filter elements; 314. an end cap; 601. a spraying system support; 602. an upper spray device; 603. a lower spray device; 604. a condenser; 605. a gas-collecting hood; 606. a fan and an exhaust pipeline; 607. a side spray device; 608. a water pump; 609. a circulating water tank; 610. a water inlet pipe; 611. a water return pipe.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
FIG. 1 is a schematic structural diagram of a novel energy-saving and consumption-reducing continuous cast tube annealing furnace system provided by the invention; FIG. 2 is a top view of the novel energy-saving and consumption-reducing continuous cast tube annealing furnace system provided by the invention. As shown in fig. 1 and 2, the novel energy-saving and consumption-reducing continuous type cast tube annealing furnace system provided by the embodiment of the invention comprises: the furnace comprises a furnace body 1, a combustion system 2, a coal gas filtering system 3 and a spraying system 6.
An in-furnace conveying chain 4 for conveying the cast tubes from the front end of the furnace body to the rear end of the furnace body is arranged in the furnace body 1. The casting tube output from the furnace body 1 is input to a spraying system 6 through an external conveying chain 5. And a plurality of positions outside the furnace body are provided with the maintenance platforms 7, so that equipment maintenance is facilitated.
FIG. 3 is a schematic structural view of a combustion system provided by the present invention; as shown in fig. 3, the combustion system 2 is arranged at the front part of the furnace body 1, the front part of the combustion system 2 is a heating section, and the rear part is a heat preservation section; the combustion system 2 includes: a preheating circulation pipeline 202 and a plurality of burners arranged on the preheating circulation pipeline 202; the preheating circulation pipeline 202 is arranged on the furnace wall of the furnace body 1, the heating section burner adopts a regenerative burner 206, the insulation section burner adopts a common burner 205, and the burners are arranged on two sides of the furnace body 1. The combustion system 2 further comprises: a combustion system smoke exhaust pipeline 201, a fan 203 and a heat exchanger 204; the fan 203 is connected with a heat exchanger 204, and the heat exchanger 204 is arranged in the furnace body 1; the heat exchanger 204 is connected with the smoke exhaust system 8 through the combustion system smoke exhaust pipeline 201.
This embodiment adopts the heat accumulation formula nozzle at the heating section, heats the cast tube, and heat exchanger 204 is collected to the steam that produces in furnace, and one side fan 203 also blows in heat exchanger 204 with the air current simultaneously, through the heat transfer principle, carries out the heat exchange with flue gas in the furnace body 1 and the outer air of furnace body 1 through heat exchanger 204, makes the flue gas cooling, makes the flue gas can not discharge at the workshop at will, can discharge the outer assigned position of factory building through exhaust system 8. Meanwhile, the outside air is heated and participates in the combustion of the heat accumulating type burner 206 and the common burner 205 again through the pipeline, and the combustion system disclosed by the invention can be used for recycling the combustion heat for the second time, so that the fuel is saved, the production cost is reduced, and the production environment is protected.
FIG. 4 is a schematic structural diagram of a gas filtering system provided by the present invention; FIG. 5 is a schematic side view of a gas filtration system provided by the present invention; fig. 6 is a schematic top view of the gas filtering system provided by the present invention. As shown in fig. 4 to 6, the gas filtering system 3 includes: a gas filtering system pipeline 307 and a plurality of coke oven gas filters 301 arranged on the gas filtering system pipeline 307; the input end of the coal gas filtering system pipeline 307 is connected with a gas supply device, the output end of the coal gas filtering system pipeline 307 is connected with the combustion system 2, and the coal gas filtering system 3 filters coal gas and supplies gas for the combustion system 2; the plurality of coke oven gas filters 301 are arranged in parallel. In the present embodiment, the coke oven gas filters 301 are provided in two sets arranged in parallel. The input end of the coal gas filtering system pipeline 307 is respectively provided with a manual sealing butterfly valve 303 (turbine) and a pressure gauge 306, and the pressure gauge 306 is matched with a valve buffer ring and a welding base; the input end of the gas filtering system pipeline 307 and the front and the back of the coke oven gas filter 301 are respectively provided with an electric blind plate valve 302, and the electric blind plate valve 302 adopts an explosion-proof electric blind plate valve; the output end of the gas filtering system pipeline 307 is respectively provided with a pneumatic quick-cut valve 304 and an internal throttling device 305. The pneumatic quick-cutting valve 304 is an explosion-proof pneumatic quick-cutting valve, and the built-in throttling device 305 is a flow meter.
FIG. 7 is a schematic structural diagram of a coke oven gas filter provided by the present invention. As shown in fig. 7, the coke oven gas filter 301 includes: a filter housing 308; the bottom of the filter housing 308 is provided with a filter inlet 309, and the top is provided with a filter outlet 310; a first layer of filter element and a second layer of filter element 313 are sequentially arranged in the filter shell 308 from bottom to top; the first layer of filter elements comprises: the metal scrap piece 312 is a piece formed by metal scraps and is integrated with the net bracket 311; the second layer of filter element 313 is made of metal mesh and a bracket above the metal mesh, and the bracket is provided with a hook convenient to replace. The coal gas enters a first layer of filter element (consisting of a metal debris piece 312 and a net-shaped bracket 311) through a filter inlet 309 to filter harmful substances such as tar and the like; then enters a second layer of filter element 313 to filter impurities and the like; the filtered coal gas is discharged through an outlet. When the first and second layers 313 of cartridges need replacement, the end cap 314 can be opened to allow replacement. The gas filtering system 3 of the embodiment has the advantages of low cost, obvious effect and high cost performance.
In the gas filtering system 3 of the embodiment, the coke oven gas enters the coke oven gas filter 301 through the pipeline, and the electric blind plate valves 302 are arranged at the front and the rear of the coke oven gas filter 301. In a normal production state, only one coke oven gas filter 301 is used, the electric blind plate valves 302 on two sides of the operating coke oven gas filter 301 are in an open state, and the electric blind plate valves 302 on two sides of the operating coke oven gas filter 301 are in a closed state. The gas main pipeline filtering system is provided with an internal throttling device 305 and a pressure gauge 306, so that the flow and the pressure are monitored. The multiple sets of coke oven gas filters 301 can effectively filter dust, tar and other harmful substances in the gas, realize maintenance without shutdown, protect terminal equipment and prolong the service life of rear line equipment.
FIG. 8 is a schematic structural view of a sprinkler system provided by the present invention; fig. 9 is a schematic side view of the spray system of the present invention. As shown in fig. 8 and 9, the spraying system 6 is arranged behind the furnace body 1; the spraying system 6 includes: the spraying system comprises a spraying system bracket 601, a spray pipe device and a water supply device; the spraying system support 601 is arranged outside the external furnace conveying chain 5, so that the external furnace conveying chain 5 passes through the spraying system support 601; wherein, the spraying system bracket 601 is provided with a waterproof color steel plate.
A condenser 604 and a spray pipe device are arranged in the spraying system bracket 601, a water inlet of the condenser 604 is connected with a water supply device, and a water outlet of the condenser 604 is connected with the spray pipe device; wherein the water supply device comprises a water pump 608 and a circulating water pool 609; the water pump 608 is connected with a circulating water pool 609 and is connected with the condenser 604 through a water inlet pipe 610; the circulating water tank 609 is connected with the spray pipe device through a return pipe 611. The circulating water tank 609 is provided with a primary sedimentation tank, a secondary sedimentation tank, a water supplementing system and a clean water tank. The nozzle arrangement comprises: a top spray, an upper spray 602, a lower spray 603, and a side spray 607; the top spray device, the upper spray device 602, the lower spray device 603 and the side spray device 607 are respectively provided with a plurality of pipelines and nozzles. Wherein the top spray device is arranged on the top of the input end of the transport chain 5 outside the furnace; the side spraying device is arranged on the side of the output end of the transport chain 5 outside the furnace.
According to the spraying system 6, the spraying system bracket 601 is used as a supporting framework of the whole rapid water cooling device, is arranged on the two sides and the upper surface of the external furnace conveying chain 5, is provided with the asbestos plate, forms a semi-surrounding structure for the external furnace conveying chain 5 and the casting pipe, and can effectively prevent water mist and water vapor from dispersing outwards. The spray system support 601 can support upper and lower spray pipes, a condenser 604, a gas skirt 605, a fan, and an exhaust duct 606. The spraying system 6 mainly works as follows: the far end is provided with a water supply device, water in a circulating water pool 609 is supplied to a water inlet of a spraying main pipeline through a water pump 608, a branch pipeline is branched from the main pipeline, one way of water is delivered to the top and enters a condenser 604, the condenser 604 is provided with a plurality of rows of nozzles of a top spraying device, the water is sprayed from top to bottom at a furnace outlet, a plurality of ways of precipitation are delivered to the upper part of a cast pipe, the upper spraying device 602 is provided with a plurality of nozzles, and the cast pipe is sprayed downwards at the upper part of a whole external furnace conveying chain 5. There are several water lines to the lower part of the casting pipe, several nozzles are arranged on the lower spray device 603, the casting pipe is sprayed upwards on the lower part of the whole transport chain 5 outside the furnace, and finally several water lines are arranged at the tail part of the rear chain of the furnace, and the water is sprayed to the core of the casting pipe through the side spray device 607. The spraying system 6 of the invention achieves the quick and effective cooling of the casting pipe through omnibearing spraying, thereby achieving the quick and effective cooling of the casting pipe.
According to the novel energy-saving consumption-reducing continuous type cast tube annealing furnace system provided by the invention, a furnace body 1 sequentially comprises a heating section, a heat preservation section, a quenching section and a slow cooling section from front to back. The combustion system is arranged in front of the furnace and covers the heating section and the heat preservation section, the rear part (in the furnace body 1) of the combustion system is a rapid cooling section and a slow cooling section in sequence, and the spraying system 6 is arranged behind the furnace. When the annealing furnace system works, the cast tube is driven into the furnace through the conveying chain 4 in the furnace, heated by the heating section of the combustion system 2 and insulated by the heat preservation section of the combustion system 2; after the cast pipe is output from the heat preservation section, the cast pipe is rapidly cooled through a quenching section, slowly cooled through a slow cooling section, discharged from the furnace and cooled to finish the annealing process; and fully cooling the cooled materials after discharging the materials from the furnace by a spraying system 6. The invention can be configured with a centralized lubricating system, can realize automatic one-key oil injection, saves labor and increases working efficiency.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a novel energy saving and consumption reduction continuous type cast tube annealing furnace system which characterized in that includes: the furnace comprises a furnace body (1), a combustion system (2), a coal gas filtering system (3) and a spraying system (6);
the combustion system (2) is arranged at the front part of the furnace body (1), the front part of the combustion system (2) is a heating section, and the rear part of the combustion system is a heat preservation section; the combustion system (2) comprises: the preheating circulation pipeline (202) and a plurality of burners arranged on the preheating circulation pipeline (202); the preheating circulation pipeline (202) is arranged on the furnace wall of the furnace body (1), a heat accumulating type burner (206) is adopted as a heating section burner, and a common burner (205) is adopted as an insulation section burner;
the gas filtration system (3) comprises: a gas filtering system pipeline (307) and a plurality of coke oven gas filters (301) arranged on the gas filtering system pipeline (307); the input end of the coal gas filtering system pipeline (307) is connected with a gas supply device, and the output end of the coal gas filtering system pipeline (307) is connected with the combustion system (2); a plurality of coke oven gas filters (301) are arranged in parallel;
the spraying system (6) is arranged behind the furnace body (1); the spraying system (6) comprises: the spraying system comprises a spraying system bracket (601), a spray pipe device and a water supply device; the spraying system support (601) is arranged outside the external furnace conveying chain (5), so that the external furnace conveying chain (5) penetrates through the spraying system support (601); a condenser (604) and a spray pipe device are arranged in the spraying system bracket (601), a water inlet of the condenser (604) is connected with a water supply device, and a water outlet of the condenser (604) is connected with the spray pipe device;
the nozzle arrangement comprises: a top spray device, an upper spray device (602), a lower spray device (603) and a side spray device; the top spraying device, the upper spraying device (602), the lower spraying device (603) and the side spraying device (607) are respectively provided with a plurality of pipelines and nozzles.
2. The new energy saving and consumption reduction continuous cast pipe lehr system according to claim 1, wherein the combustion system (2) further comprises: a combustion system smoke exhaust pipeline (201), a fan (203) and a heat exchanger (204); the fan (203) is connected with a heat exchanger (204), and the heat exchanger (204) is arranged in the furnace body (1); the heat exchanger (204) is connected with the smoke exhaust system (8) through a smoke exhaust pipeline (201) of the combustion system.
3. The novel energy-saving consumption-reducing continuous type cast tube annealing furnace system according to claim 1, wherein the input end of the gas filtering system pipeline (307) is respectively provided with a manual sealing butterfly valve (303) and a pressure gauge (306);
the input end of the gas filtering system pipeline (307) and the front and the back of the coke oven gas filter (301) are respectively provided with an electric blind plate valve (302);
the output end of the gas filtering system pipeline (307) is respectively provided with a pneumatic quick-cut valve (304) and an internal throttling device (305).
4. The new energy saving and consumption reduction continuous cast pipe lehr system as claimed in claim 3, wherein the coke oven gas filter (301) comprises: a filter housing (308);
the bottom of the filter shell (308) is provided with a filter inlet (309) and the top is provided with a filter outlet (310);
a first layer of filter element and a second layer of filter element (313) are sequentially arranged in the filter shell (308) from bottom to top;
the first layer of filter elements comprises: a mesh bracket (311) and a metal scrap piece (312) arranged on the mesh bracket (311);
the second layer of filter element (313) adopts a metal net.
5. The novel energy-saving consumption-reducing continuous cast tube annealing furnace system according to claim 1, wherein the spraying system bracket (601) is provided with a waterproof color steel plate.
6. The new energy saving and consumption reduction continuous cast pipe annealing furnace system according to claim 1 or 5, wherein the water supply device comprises a water pump (608) and a circulating water tank (609);
the water pump (608) is connected with a circulating water pool (609) and is connected with the condenser (604) through a water inlet pipe (610);
the circulating water tank (609) is connected with the spray pipe device through a water return pipe (611).
7. The novel energy-saving consumption-reducing continuous type cast tube annealing furnace system according to claim 1, wherein an in-furnace conveying chain (4) for conveying the cast tubes from the front end of the furnace body to the rear end of the furnace body is arranged in the furnace body (1).
8. The new energy-saving consumption-reducing continuous type cast tube annealing furnace system according to claim 1 or 7, characterized in that the cast tubes output from the furnace body (1) are input to the spraying system (6) through the external transport chain (5).
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| CN202010967718.3A CN111944982B (en) | 2020-09-15 | 2020-09-15 | Novel energy-saving consumption-reducing continuous type cast tube annealing furnace system |
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