CN209584012U - A kind of limekiln in PVC Production Process - Google Patents

A kind of limekiln in PVC Production Process Download PDF

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Publication number
CN209584012U
CN209584012U CN201920078639.XU CN201920078639U CN209584012U CN 209584012 U CN209584012 U CN 209584012U CN 201920078639 U CN201920078639 U CN 201920078639U CN 209584012 U CN209584012 U CN 209584012U
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China
Prior art keywords
cooling tube
burning
gas outlet
cooling
air inlet
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CN201920078639.XU
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郝博
聂开斌
吴文庆
徐宏军
邱尉育
侯波
祁瑞峰
祁少华
李山虎
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China National Salt Industry Corp Jilantai Chlorine And Alkali Chemical Co Ltd
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China National Salt Industry Corp Jilantai Chlorine And Alkali Chemical Co Ltd
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Abstract

The utility model discloses the limekilns in a kind of PVC Production Process, including kiln body, kiln body top is equipped with feed inlet, bottom end is equipped with discharge port, preheating zone is equipped with inside kiln body from top to bottom, burning zone and cooling zone, preheating zone top is equipped with upper suction beam, burning zone top is equipped with upper layer burning beam, burning zone lower part is equipped with lower layer's burning beam, cooling zone top is equipped with lower suction beam, the gas outlet of upper suction beam and the air inlet of air preheater connect, the gas outlet of air preheater and the cyclone separator air inlet inside cooling cyclone connect, the gas outlet of cyclone separator and the air inlet of bag filter connect;The gas outlet of lower suction beam is connect with the air inlet of lower suction beam deduster, the gas outlet of lower suction beam deduster is connect with the air inlet of main combustion fan, the gas outlet of main combustion fan and the cold medium import of air preheater connect, the utility model can better additional heat, the lime quality for improving the periphery Yao Bi, reduces environmental pollution.

Description

A kind of limekiln in PVC Production Process
Technical field:
The utility model relates to lime stone production fields, and in particular to the limekiln in a kind of PVC Production Process.
Background technique:
The production method of polyvinyl chloride is mainly carbide, and calcium carbide used in carbide is by lime and carbon raw material It is produced by furnace of calcium carbide, the beam-type limekiln of lime burning is the key equipment in PVC Production Process, beam type stone Feed inlet, preheating zone, burning zone, cooling zone and discharge port are set as in ash furnace kiln body from top to bottom.Existing beam-type limekiln, In Upper and lower two layers of burning beam is housed on burning zone, there is the burning pipeline connecting with fuel filler tube, and burning pipeline in burning beam Combustion air channel between beam body is passed through in fuel filler tube and to be mixed by fine coal, natural gas and calcium carbide stove exhaust Burning gases, burning gases burning provide heat for limekiln calcining, and burning gases enter kiln by the nozzle of burning beam bottom end It is interior.Periphery burner is installed on the outside of kiln wall, burning gases, to additional heat on the inside of kiln wall, are made close to kiln wall by periphery burner Lime stone can be heated calcining.There are following problems in limekiln after long-time service:
1, the heat that periphery burner provides only increases in burner exit, is not radiated to whole kiln wall, more heat Amount is lost outside kiln wall, and heat can not completely arrive at kiln wall, and then causes calcining belt temperature insufficient, is generated fluctuation, is influenced stone Lime stone is in the normal reaction of burning zone, the case where there is also raw burn close to the lime stone of kiln wall.
2, refractory brick is relatively thin in kiln at the burner of periphery, and temperature aggregation keeps the refractory brick of periphery burner easy to fall off, service life It reduces.
3, contain a large amount of lime stone dust in the exhaust gas of limekiln discharge, the lime stone of larger particles can rush in dust Brushing bag dust collector, causes bag filter to damage, so that dust removing effects substantially reduce, the exhaust gas discharge containing lime stone dust Into air, to air born pollution, for a long time, so that limekiln periphery accumulates dust, operating environment is polluted, to operation people The physical and mental health of member has an impact.
Utility model content:
The purpose of this utility model is to provide a kind of limekilns of the reduction heat losses in PVC Production Process.
The utility model is implemented by following technical solution:
A kind of limekiln in PVC Production Process, including kiln body, the kiln body top are equipped with feed inlet, and bottom end is set There is discharge port, be equipped with preheating zone, burning zone and cooling zone inside the kiln body from top to bottom, the preheating zone top is equipped with upper suction Gas beam, the burning zone top are equipped with upper layer burning beam, and the burning zone lower part is equipped with lower layer's burning beam, the cooling zone top Equipped with lower suction beam, the gas outlet of the upper suction beam and the air inlet of air preheater are connected, and the air preheater goes out Port is connect with the cyclone separator air inlet inside cooling cyclone, the gas outlet of the cyclone separator and bag filter Air inlet connection;The gas outlet of the lower suction beam is connect with the air inlet of lower suction beam deduster, and the lower suction beam removes The gas outlet of dirt device is connect with the air inlet of main combustion fan, gas outlet and the air preheater of the main combustion fan The cold medium outlet of cold medium import connection, the air preheater passes through the kiln body where snorkel and the burning zone Inside connection.
Preferably, the upper layer burning beam quantity is 1~4, and lower layer's burning beam quantity is 1~3, the upper layer The both ends of burning beam and lower layer's burning beam are plugged with burning pipeline, and the burning pipeline bottom end is equipped with several groups nozzle, The upper layer burning beam of nozzle lower end described in every group, the bottom end of lower layer's burning beam are correspondingly arranged 1 through nozzle hole.
Preferably, nozzle quantity described in every group is 1~3.
Preferably, the cooling cyclone includes the cyclone separator, and the cyclone separator outer cup is equipped with collet, Medium entrance is equipped on the collet of the air inlet side of the cyclone separator, in the gas outlet of the cyclone separator The collet of side is equipped with media outlet, and the medium entrance is connect with the air inlet of secondary combustion fan, and the medium goes out Mouth is connect with the snorkel.
Preferably, the cooling tube of head and the tail closure connection, the cooling are fixed with along the discharge port top of the kiln body Pipe is in rectangle, and the air inlet of the cooling tube and the gas outlet of air blower connect, set along its length on the inside of the cooling tube It is equipped with 1 lateral cooling tube, its width direction of lateral edge is provided with 2 longitudinal cooling tubes, the cooling tube, cross in the cooling tube It is interconnected to cooling tube and longitudinal cooling tube, it is opposite between the cooling tube, lateral cooling tube and longitudinal cooling tube Side is equipped with several cooling gas outlets.
The advantages of the utility model:
1, it is dried, can be exchanged heat with exhaust gas between collet and cyclone separator using secondary combustion fan, and by heat supplement Burning is participated in into kiln, reduces the thermal losses of limekiln burning zone;And heat exchange jacket and cyclone separator are combined together, Reduce space hold.
2, periphery burner is removed, kiln wall inner lining refractory material is built completely, prevents inner lining refractory material from falling off, has increased considerably stone Ash furnace service life reduces thermal loss.
3, cyclone separator can remove the lime stone dust of larger particles in removing exhaust gas, avoid the damage of bag filter, Reduction exhaust gas is mingled with lime stone dust and is discharged in air, to air born pollution, avoids producing the physical and mental health of operating personnel It is raw to influence.
Detailed description of the invention:
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of existing structure;
Fig. 2 is the schematic diagram of structure described in the utility model;
Fig. 3 is the schematic diagram of burning beam described in the utility model;
Fig. 4 is the schematic diagram of cooling cyclone described in the utility model;
Fig. 5 is the schematic diagram of discharge port cooling heat transferring structure described in the utility model.
In figure: kiln body 1, preheating zone 2, burning zone 3, cooling zone 4, upper suction beam 5, upper layer burning beam 6, lower layer's burning beam 7, Lower suction beam 8, feed inlet 9, discharge port 10, air preheater 11, cooling cyclone 12, bag filter 13, lower suction beam remove Dirt device 14, main combustion air device 15, secondary combustion fan 16, snorkel 17, burning pipeline 18, nozzle 19, through nozzle hole 20, collet 21, cyclone separator 22, media outlet 23, medium entrance 24, cooling tube 25, lateral cooling tube 26, longitudinal cooling tube 27, cooling Gas outlet 28, air blower 29.
Specific embodiment:
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of limekiln in PVC Production Process, including kiln body 1, kiln body 1 Top is equipped with feed inlet 9, and bottom end is equipped with discharge port 10, is equipped with preheating zone 2, burning zone 3 and cooling zone from top to bottom inside kiln body 1 4,2 top of preheating zone is equipped with upper suction beam 5, and 3 top of burning zone is equipped with upper layer burning beam 6, and 3 lower part of burning zone is burnt equipped with lower layer Beam 7,6 quantity of upper layer burning beam are 1~4, and 7 quantity of lower layer's burning beam is 1~3, upper layer burning beam 6 and lower layer's burning beam 7 Both ends be plugged with burning pipeline 18, burning 18 bottom end of pipeline be equipped with several groups nozzle 19, the upper layer of every group of 19 lower end of nozzle Burning beam 6, lower layer's burning beam 7 bottom end be correspondingly arranged 1 through nozzle hole 20, every group of 19 quantity of nozzle is 1~3, combustion tube Road 18 is connect with fuel filler tube, and the burning gases mixed by fine coal, natural gas and calcium carbide stove exhaust are passed through in fuel filler tube, There is combustion-supporting air duct between upper layer burning beam 6 and the inner wall and burning pipeline 18 of lower layer's burning beam 7, upper layer burning beam 6 is under It is connected with combustion fan on layer burning beam 7, multiple nozzles 19 are set, burning gases spray volume is made to become larger, reduces burning gases pressure Power, while the amount that combustion fan frequency increases combustion air is adjusted, the heat for supplying nozzle 19 is by increasing combustion air from nozzle Through-hole 20 is blowed into kiln, increases heat diffusion area, and the lime stone close to kiln wall is heated;4 top of cooling zone is set There is lower suction beam 8, the gas outlet of upper suction beam 5 is connect with the air inlet of air preheater 11, the gas outlet of air preheater 11 It is connect with 22 air inlet of cyclone separator inside cooling cyclone 12, the gas outlet of cyclone separator 22 and bag filter 13 Air inlet connection, cooling cyclone 12 include cyclone separator 22,22 outer cup of cyclone separator be equipped with collet 21, in whirlwind The collet 21 of the air inlet side of separator 22 is equipped with medium entrance 24, the collet in the gas outlet side of cyclone separator 22 21 are equipped with media outlet 23, and medium entrance 24 is connect with the air inlet of secondary combustion fan 16, media outlet 23 and snorkel 17 Connection, cyclone separator 22 can remove the bulky grain lime stone in removing exhaust gas, avoid the damage of bag filter 13, helped using pair Combustion blower 16 is dried between collet 21 and cyclone separator 22, can be exchanged heat with exhaust gas, and hot wind is supplemented in and participates in firing in kiln It burns, reduces 3 thermal losses of limekiln burning zone;And collet 21 and cyclone separator 22 are combined together, space is reduced and accounts for With;The gas outlet of bag filter 13 connects air-introduced machine, and the gas outlet of air-introduced machine connects chimney;The gas outlet of lower suction beam 8 with The air inlet of lower suction beam deduster 14 connects, and the gas outlet of lower suction beam deduster 14 and the air inlet of main combustion fan 15 connect It connects, the gas outlet of main combustion fan 15 is connect with the cold medium import of air preheater 11, and the cold medium of air preheater 11 goes out Mouth inside the kiln body 1 where snorkel 17 and burning zone 3 by being connected to;Head and the tail are fixed with along 10 top of discharge port of kiln body 1 to close The cooling tube 25 of connection is closed, cooling tube 25 is in rectangle, and the air inlet of cooling tube 25 is connect with the gas outlet of air blower 29, cooling tube 25 insides are provided with 1 lateral cooling tube 26 along its length, its width direction of lateral edge is provided with 2 longitudinal directions in cooling tube 25 Cooling tube 27, cooling tube 25, lateral cooling tube 26 and longitudinal cooling tube 27 are interconnected, cooling tube 25,26 and of lateral cooling tube Opposite side is equipped with several cooling gas outlets 28 between longitudinal cooling tube 27, and air blower 29 passes through cooling tube 25, cross To cooling tube 26 and longitudinal cooling tube 27 to the lime cooling heat transferring of discharge port 10, the wind after heat exchange directly participates in burning zone 3 Burning reduces the thermal losses of burning zone 3 again.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (6)

1. the limekiln in a kind of PVC Production Process, it is characterised in that: including kiln body, the kiln body top is equipped with charging Mouthful, bottom end is equipped with discharge port, preheating zone, burning zone and cooling zone is equipped with inside the kiln body from top to bottom, on the preheating zone Portion is equipped with upper suction beam, and the burning zone top is equipped with upper layer burning beam, and the burning zone lower part is equipped with lower layer's burning beam, described Cooling zone top is equipped with lower suction beam, and the gas outlet of the upper suction beam and the air inlet of air preheater connect, the air The gas outlet of preheater and cyclone separator air inlet inside cooling cyclone connect, the gas outlet of the cyclone separator with The air inlet of bag filter connects;The gas outlet of the lower suction beam is connect with the air inlet of lower suction beam deduster, described The gas outlet of lower suction beam deduster is connect with the air inlet of main combustion fan, the gas outlet of the main combustion fan and the sky The cold medium import of air preheater connects, and the cold medium outlet of the air preheater passes through where snorkel and the burning zone The kiln body inside connection.
2. the limekiln in a kind of PVC Production Process according to claim 1, it is characterised in that: the upper layer combustion Burning beam quantity is 1~4, and lower layer's burning beam quantity is 1~3, the upper layer burning beam and lower layer's burning beam Both ends are plugged with burning pipeline, and the burning pipeline bottom end is equipped with several groups nozzle, nozzle lower end described in every group it is described on Layer burning beam, lower layer's burning beam bottom end be correspondingly arranged 1 through nozzle hole.
3. the limekiln in a kind of PVC Production Process according to claim 2, it is characterised in that: sprayed described in every group Unrounded number is 1~3.
4. the according to claim 1, limekiln in a kind of 2 or 3 any PVC Production Process, it is characterised in that: The cooling cyclone includes the cyclone separator, and the cyclone separator outer cup is equipped with collet, in the cyclonic separation The collet of the air inlet side of device is equipped with medium entrance, the collet in the gas outlet side of the cyclone separator It is equipped with media outlet, the medium entrance is connect with the air inlet of secondary combustion fan, the media outlet and the snorkel Connection.
5. the according to claim 1, limekiln in a kind of 2 or 3 any PVC Production Process, it is characterised in that: The cooling tube of head and the tail closure connection is fixed with along the discharge port top of the kiln body, the cooling tube is in rectangle, described cold But the gas outlet of the air inlet of pipe and air blower connects, and is provided with 1 laterally cooling on the inside of the cooling tube along its length It manages, its width direction of lateral edge is provided with 2 longitudinal cooling tubes, the cooling tube, lateral cooling tube and longitudinal direction in the cooling tube Cooling tube is interconnected, and opposite side is equipped with several between the cooling tube, lateral cooling tube and longitudinal cooling tube Cooling gas outlet.
6. the limekiln in a kind of PVC Production Process according to claim 4, it is characterised in that: along the kiln body The discharge port top be fixed with head and the tail closure connection cooling tube, the cooling tube be in rectangle, the air inlet of the cooling tube Mouth is connect with the gas outlet of air blower, is provided with 1 lateral cooling tube, the cooling on the inside of the cooling tube along its length Its width direction of lateral edge is provided with 2 longitudinal cooling tubes in managing, and the cooling tube, lateral cooling tube are mutually interconnected with longitudinal cooling tube Logical, opposite side is equipped with several cooling gas outlets between the cooling tube, lateral cooling tube and longitudinal cooling tube.
CN201920078639.XU 2019-01-17 2019-01-17 A kind of limekiln in PVC Production Process Active CN209584012U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920078639.XU CN209584012U (en) 2019-01-17 2019-01-17 A kind of limekiln in PVC Production Process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920078639.XU CN209584012U (en) 2019-01-17 2019-01-17 A kind of limekiln in PVC Production Process

Publications (1)

Publication Number Publication Date
CN209584012U true CN209584012U (en) 2019-11-05

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ID=68353812

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920078639.XU Active CN209584012U (en) 2019-01-17 2019-01-17 A kind of limekiln in PVC Production Process

Country Status (1)

Country Link
CN (1) CN209584012U (en)

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