CN110953885A - Multi-effect reaction furnace for producing PVC (polyvinyl chloride) and working method thereof - Google Patents
Multi-effect reaction furnace for producing PVC (polyvinyl chloride) and working method thereof Download PDFInfo
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- CN110953885A CN110953885A CN201911241682.4A CN201911241682A CN110953885A CN 110953885 A CN110953885 A CN 110953885A CN 201911241682 A CN201911241682 A CN 201911241682A CN 110953885 A CN110953885 A CN 110953885A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
- F27B19/04—Combinations of furnaces of kinds not covered by a single preceding main group arranged for associated working
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/007—Systems for reclaiming waste heat including regenerators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
- F27D2019/0003—Monitoring the temperature or a characteristic of the charge and using it as a controlling value
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention discloses a multi-effect reaction furnace for producing PVC, which comprises: the waste heat recovery device comprises a preheating furnace, a heating furnace, a cooling furnace and a waste heat recovery mechanism, wherein one side of the preheating furnace is connected with the heating furnace, one side of the heating furnace, which is far away from the preheating furnace, is connected with the cooling furnace, the cooling furnace is provided with the waste heat recovery mechanism, and the waste heat recovery mechanism is connected with the preheating furnace; the waste heat recovery mechanism comprises a heat delivery pipeline and a heat storage bag body; the device also comprises a protective layer and a detection mechanism; also discloses a working method of the multi-effect reaction furnace for producing PVC; on one hand, the method of splitting heating time and heating for multiple times is adopted, so that the problem that a reaction furnace needs to be heated for a long time is solved, the product always belongs to a flowing state, the production continuity is realized, and the production efficiency is high; on the other hand provides modular protection panel, both can follow the furnace body and disassemble fast, reduced the cost of scrapping, can in time provide sufficient protection again, automatic leak protection, the practicality is high.
Description
Technical Field
The invention belongs to chemical combination reaction equipment and the technical field, and particularly relates to a multi-effect reaction furnace for producing PVC and a working method thereof.
Background
The PVC material is one kind of plastic decoration material, is short for PVC material, is thermoplastic high polymer polymerized from vinyl chloride monomer, and has the features of light weight, heat insulation, heat preservation, moisture protection, fire retarding, simple construction, etc. Because the PVC material has various specifications, colors and patterns and is rich in decoration, the PVC material is widely applied to production and life. As an indispensable reaction furnace in the production of PVC materials, the reaction furnace not only has huge demand, but also is the object of continuous manpower and physical research of enterprises.
With the industrial development and scientific and technological progress, the existing reaction furnace is steadily developing towards the direction of scale and automation. But with the global economic convergence and the outbreak of economic crisis, the energy expansion pace of the PVC industry in China is obviously slowed down. As the PVC industry in China is expanded too fast, the original production structure and production layout of domestic enterprises must be adjusted, and the original reaction furnace is not suitable for modern production any more. For example, current PVC reacting furnace has the problem of unable continuous production, and production efficiency is poor, influences enterprise competitiveness, and current reacting furnace has the problem that protective capacities is poor simultaneously, takes place to leak easily, and the security is poor. Therefore, the present application has made innovations and improvements to the reaction furnace with respect to the above problems.
The existing reaction furnace mainly has the following problems:
1. most of the existing reaction furnaces have the problems of incapability of continuous production, poor production efficiency and influence on enterprise competitiveness
2. Most of the existing reaction furnaces have the problems of poor protection capability, easy leakage and poor safety.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide a multi-effect reaction furnace for producing PVC and a working method thereof, and on one hand, the method of splitting heating time and heating for multiple times is adopted, so that the problem that the reaction furnace needs to be heated for a long time is solved, the product always belongs to a flowing state, the production continuity is realized, and the production efficiency is high; on the other hand provides modular protection panel, both can follow the furnace body and disassemble fast, reduced the cost of scrapping, can in time provide sufficient protection again, automatic leak protection, the practicality is high.
The technical scheme is as follows: in order to achieve the above objects, the present invention provides a multiple effect reaction furnace for producing PVC, comprising: the waste heat recovery device comprises a preheating furnace, a heating furnace, a cooling furnace and a waste heat recovery mechanism, wherein one side of the preheating furnace is connected with the heating furnace, one side of the heating furnace, which is far away from the preheating furnace, is connected with the cooling furnace, the cooling furnace is provided with the waste heat recovery mechanism, and the waste heat recovery mechanism is connected with the preheating furnace;
the waste heat recovery mechanism comprises a heat delivery pipeline and a heat storage sac body, one end of the heat delivery pipeline is arranged inside the cooling furnace in a surrounding mode, the other end of the heat delivery pipeline is arranged inside the preheating furnace in a surrounding mode, the heat delivery pipeline is annular, the heat storage sac body is arranged in the heat delivery pipeline, and the heat storage sac body moves through a fluid medium.
The reaction furnace is arranged, and a method of splitting heating time and heating for multiple times is adopted, so that the problem that the reaction furnace needs to be heated for a long time is solved, the product always belongs to a flowing state, the production continuity is realized, and the production efficiency is high.
The heat storage bag body is provided with through holes, one side of each through hole is provided with a valve, the valve is glued to the inner surface of the heat storage bag body, the valve is made of flexible materials, and iodine is arranged in the heat storage bag body.
The waste heat recovery mechanism is arranged, on one hand, the heat which is not needed in the cooling furnace is supplied to the preheating furnace, so that the utilization rate of energy is improved, on the other hand, the heat is absorbed by adding general fluid assisted by sublimation, so that the heat absorption capacity is strong, and the practicability is high.
The protective layer is arranged on the outer side of the heating furnace and comprises a plurality of protective plates, clamping grooves, welding strips, combustion improver and igniters, the protective plates are arranged on the outer surface of the heating furnace in a matrix mode, the clamping grooves are formed in the inner side of the protective plates, the outer surface of the heating furnace is provided with buckles, the clamping grooves are matched with the buckles, the welding strips are arranged on the edges of the protective plates in a surrounding mode, the welding strips are arranged on one sides, close to the heating furnace, of the protective plates, the combustion improver is arranged in the welding strips, the combustion improver penetrates through the welding strips, the combustion improver penetrates out of the welding strips, the igniters are arranged in a connecting mode, and.
The protective layer is arranged, so that the modular protective panel is provided, the protective panel can be quickly disassembled from the furnace body, the scrapping cost is reduced, sufficient protection can be timely provided, the leakage is automatically prevented, and the practicability is high.
The welding strip is essentially a mixture of aluminum and ferric oxide, and the combustion improver is essentially a magnesium strip.
The igniter comprises a thermal fuse, a heating resistor and an oxygen-carrying air box, wherein the thermal fuse is arranged on one side, close to a heating furnace, of a protection plate, the thermal fuse is connected with the heating resistor, the heating resistor is arranged on one side of a welding strip and is in contact with a combustion improver, the oxygen-carrying air box is wrapped on the outer side of the heating resistor, and the oxygen-carrying air box is fixedly arranged on the protection plate.
The heating furnace comprises a supporting shell, a reaction bin body, a heater bin body, heating rods, a plurality of sleeves, a gas circuit valve, a gas supply pump and an air pump, wherein the reaction bin body is arranged in the supporting shell, the heater bin body is arranged at the top of the reaction bin body, the sleeves are arranged in the heater bin body and penetrate through the reaction bin body, the sleeves are welded with the reaction bin body, the heating rods are arranged in the sleeves and are in sliding contact with the sleeves, the gas circuit valve is arranged on one side of the heater bin body and is connected with the gas supply pump and the air pump, and the gas supply pump and the air pump are fixedly arranged at the bottom of the supporting shell.
The heating furnace provided by the invention adjusts heat supply to different positions of the reaction bin body by utilizing the position and the volume of the heating rod extending into the reaction bin body, so that the aim of balancing the temperature in the reaction bin body is fulfilled, the production environment of equipment is stabilized, and the production quality is improved.
The heating bin also comprises a detection mechanism, wherein the detection mechanism comprises a heat sensor, a PLC (programmable logic controller) and a protective shell, the heat sensor is fixedly arranged on the inner side of the reaction bin body or the outer side of the sleeve, the heat sensor is connected with the PLC, the PLC is arranged in the support shell, and the PLC is connected with a gas circuit valve; and a protective shell is wrapped outside the thermal sensor.
The detection mechanism provided by the invention replaces manual operation by a logic control element, so that the waste of human resources is reduced, the production cost is reduced, the risk of misoperation is reduced, and the efficiency of equipment is improved.
The multi-effect reaction furnace for producing PVC comprises automatic leakage prevention, and specifically comprises the following steps:
the method comprises the following steps: the thermal fuse is fused by the heat of the leakage, the heating resistor obtains current to heat and ignites the combustion improver, and the welding strip is subjected to fusion welding to fix the protection plate and the heating furnace.
The multi-effect reaction furnace for producing PVC comprises detection and automatic temperature control, and specifically comprises the following steps:
the method comprises the following steps: detecting, wherein the heat sensor detects the temperature of different areas in the reaction bin body and correspondingly sends the temperature to the PLC;
step two: the gas circuit valve is controlled to be switched by the PLC according to the temperature change, and the air volume in the heater bin is changed, so that the heating position of the heating rod is changed, and the temperature of each area in the reaction bin is balanced.
The technical scheme shows that the invention has the following beneficial effects:
1. according to the multi-effect reaction furnace for producing PVC and the working method thereof, the heating time is divided, and the heating is carried out for multiple times, so that the problem that the reaction furnace needs to be heated for a long time is solved, the product always belongs to a flowing state, the production continuity is realized, and the production efficiency is high.
2. According to the multi-effect reaction furnace for producing PVC and the working method thereof, on one hand, heat which is not needed in the cooling furnace is supplied to the preheating furnace, so that the utilization rate of energy is improved, on the other hand, sublimation is added to assist general fluid to absorb heat, so that the multi-effect reaction furnace is strong in heat absorption capacity and high in practicability.
3. According to the multi-effect reaction furnace for producing PVC and the working method thereof, the modular protective panel is provided, so that the multi-effect reaction furnace can be quickly disassembled from the furnace body, the scrapping cost is reduced, sufficient protection can be timely provided, automatic leakage prevention is realized, and the practicability is high.
4. According to the multi-effect reaction furnace for producing PVC and the working method thereof, the heating rod is extended into the position and the volume of the reaction bin body, so that the heat supply to different positions of the reaction bin body is adjusted, the aim of balancing the temperature in the reaction bin body is fulfilled, the production environment of equipment is stabilized, and the production quality is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of a waste heat recovery mechanism according to the present invention;
FIG. 3 is a schematic structural diagram of a passivation layer according to the present invention;
FIG. 4 is a schematic view of the structure of a heating furnace according to the present invention;
FIG. 5 is a schematic view of the heater of the present invention;
in the figure: the device comprises a preheating furnace-1, a heating furnace-2, a supporting shell-21, a reaction cabin-22, a heater cabin-23, a heating rod-24, a sleeve-25, an air passage valve-26, an air feeding pump-27, an air sucking pump-28, a cooling furnace-3, a waste heat recovery mechanism-4, a heat conveying pipeline-41, a heat storage bag-42, a valve-43, a protective layer-5, a protective plate-51, a clamping groove-52, a welding strip-53, a combustion improver-54, an igniter-55, a thermal fuse-551, a heating resistor-552, an oxygen-containing air box-553, a detection mechanism-6, a heat sensor-61, a PLC-62 and a protective shell-63.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Example 1
A multi-effect reaction furnace for producing PVC as shown in fig. 1 to 5, comprising: the device comprises a preheating furnace 1, a heating furnace 2, a cooling furnace 3 and a waste heat recovery mechanism 4, wherein one side of the preheating furnace 1 is connected with the heating furnace 2, one side of the heating furnace 2, which is far away from the preheating furnace 1, is connected with the cooling furnace 3, the cooling furnace 3 is provided with the waste heat recovery mechanism 4, and the waste heat recovery mechanism 4 is connected with the preheating furnace 2;
the waste heat recovery mechanism 4 comprises a heat delivery pipeline 41 and a heat storage capsule 42, one end of the heat delivery pipeline 41 is arranged inside the cooling furnace 3 in a surrounding mode, the other end of the heat delivery pipeline 41 is arranged inside the preheating furnace 1 in a surrounding mode, the heat delivery pipeline 41 is annular, the heat storage capsule 42 is arranged in the heat delivery pipeline 41, and the heat storage capsule 42 moves through a fluid medium.
In this embodiment, the heat storage capsule 42 is provided with a perforation, one side of the perforation is provided with a valve 43, the valve 43 is glued and connected with the inner surface of the heat storage capsule 42, the valve 43 is made of a flexible material, and iodine is arranged in the heat storage capsule 42.
In this embodiment the 2 outsides of heating furnace be provided with protective layer 5, protective layer 5 includes protection shield 51, joint groove 52, welding strip 53, combustion improver 54 and firearm 55, protection shield 51 is provided with a plurality ofly, protection shield 51 is the matrix and arranges in the 2 surfaces of heating furnace, protection shield 51 inboard is provided with joint groove 52, the 2 surfaces of heating furnace are provided with the buckle, joint groove 52 with the buckle cooperation, protection shield 51 edge is encircleed and is provided with welding strip 53, welding strip 53 sets up in one side that protection shield 51 is close to heating furnace 2, be provided with combustion improver 54 in the welding strip 53, combustion improver 54 runs through welding strip 53, welding strip 53 is worn out to combustion improver 54, combustion improver 54 connects and is provided with some firearms 55, some firearms 55 are fixed to be set up on protection shield 51.
The welding rod 53 in this embodiment is essentially a mixture of aluminum and iron oxide, and the oxidizer 54 is essentially a magnesium rod.
The igniter 55 in this embodiment includes a thermal fuse 551, a heating resistor 552, and an oxygen-containing air box 553, the thermal fuse 551 is disposed on one side of the protection plate 51 near the heating furnace 2, the thermal fuse 551 is connected with the heating resistor 552, the heating resistor 552 is disposed on one side of the welding strip 53, the heating resistor 522 contacts the oxidant 54, the oxygen-containing air box 553 is wrapped outside the heating resistor 522, and the oxygen-containing air box 553 is fixedly disposed on the protection plate 51.
The heating furnace 2 in this embodiment includes a supporting casing 21, a reaction cabin 22, a heater cabin 23, a heating rod 24, a sleeve 25, a gas circuit valve 26, a gas supply pump 27 and an air pump 28, the reaction cabin 22 is provided inside the supporting casing 21, the heater cabin 23 is provided on the top of the reaction cabin 22, the heater cabin 23 is provided with a plurality of pipes, the sleeve 25 is provided in the heater cabin 23, the sleeve 25 penetrates the reaction cabin 22, the sleeve 25 is welded to the reaction cabin 22, the heating rod 24 is provided in the sleeve 25, the heating rod 24 is in sliding contact with the sleeve 25, the gas circuit valve 26 is provided on one side of the heater cabin 23, the gas circuit valve 26 is connected to the gas supply pump 27 and the air pump 28, and the gas supply pump 26 and the air pump 27 are fixedly arranged at the bottom of the supporting casing.
The heating chamber 2 in this embodiment further comprises a detection mechanism 6, the detection mechanism 6 comprises a thermal sensor 61, a PLC controller 62 and a protective casing 63, the thermal sensor 61 is fixedly disposed on the inner side of the reaction chamber body 22 or the outer side of the casing 25, the thermal sensor 61 is connected with the PLC controller 62, the PLC controller 62 is disposed in the support casing 21, and the PLC controller 62 is connected with the gas circuit valve 26; the outer side of the thermal sensor 61 is wrapped with a protective shell 63.
The multi-effect reaction furnace for producing PVC in the embodiment comprises automatic leakage prevention, and specifically comprises the following steps:
the method comprises the following steps: the thermal fuse 551 is fused by the heat of the leakage, the heating resistor 552 obtains current to generate heat, the combustion improver 54 is ignited, the welding strip 53 is heated to perform fusion welding, and the protection plate 51 and the heating furnace 2 are fixed.
The multi-effect reaction furnace for producing PVC in the embodiment comprises detection and automatic temperature control, and specifically comprises the following steps:
the method comprises the following steps: detecting, wherein the heat sensor 61 detects the temperature of different areas in the reaction bin body 22 and correspondingly sends the temperature to the PLC 62;
step two: the PLC 62 controls the gas circuit valve 26 to switch according to the temperature change, and the air volume in the heater bin body 23 is changed, so that the heating position of the heating rod 24 is changed, and the temperature of each area in the reaction bin body 22 is balanced.
Example 2
A multi-effect reaction furnace for producing PVC as shown in fig. 1 and 2, comprising: the device comprises a preheating furnace 1, a heating furnace 2, a cooling furnace 3 and a waste heat recovery mechanism 4, wherein one side of the preheating furnace 1 is connected with the heating furnace 2, one side of the heating furnace 2, which is far away from the preheating furnace 1, is connected with the cooling furnace 3, the cooling furnace 3 is provided with the waste heat recovery mechanism 4, and the waste heat recovery mechanism 4 is connected with the preheating furnace 2;
the waste heat recovery mechanism 4 comprises a heat delivery pipeline 41 and a heat storage capsule 42, one end of the heat delivery pipeline 41 is arranged inside the cooling furnace 3 in a surrounding mode, the other end of the heat delivery pipeline 41 is arranged inside the preheating furnace 1 in a surrounding mode, the heat delivery pipeline 41 is annular, the heat storage capsule 42 is arranged in the heat delivery pipeline 41, and the heat storage capsule 42 moves through a fluid medium.
In this embodiment, the heat storage capsule 42 is provided with a perforation, one side of the perforation is provided with a valve 43, the valve 43 is glued and connected with the inner surface of the heat storage capsule 42, the valve 43 is made of a flexible material, and iodine is arranged in the heat storage capsule 42.
Example 3
A multi-effect reaction furnace for producing PVC as shown in fig. 1 and 3, comprising: the device comprises a preheating furnace 1, a heating furnace 2, a cooling furnace 3 and a waste heat recovery mechanism 4, wherein one side of the preheating furnace 1 is connected with the heating furnace 2, one side of the heating furnace 2, which is far away from the preheating furnace 1, is connected with the cooling furnace 3, the cooling furnace 3 is provided with the waste heat recovery mechanism 4, and the waste heat recovery mechanism 4 is connected with the preheating furnace 2;
the waste heat recovery mechanism 4 comprises a heat delivery pipeline 41 and a heat storage capsule 42, one end of the heat delivery pipeline 41 is arranged inside the cooling furnace 3 in a surrounding mode, the other end of the heat delivery pipeline 41 is arranged inside the preheating furnace 1 in a surrounding mode, the heat delivery pipeline 41 is annular, the heat storage capsule 42 is arranged in the heat delivery pipeline 41, and the heat storage capsule 42 moves through a fluid medium.
In this embodiment the 2 outsides of heating furnace be provided with protective layer 5, protective layer 5 includes protection shield 51, joint groove 52, welding strip 53, combustion improver 54 and firearm 55, protection shield 51 is provided with a plurality ofly, protection shield 51 is the matrix and arranges in the 2 surfaces of heating furnace, protection shield 51 inboard is provided with joint groove 52, the 2 surfaces of heating furnace are provided with the buckle, joint groove 52 with the buckle cooperation, protection shield 51 edge is encircleed and is provided with welding strip 53, welding strip 53 sets up in one side that protection shield 51 is close to heating furnace 2, be provided with combustion improver 54 in the welding strip 53, combustion improver 54 runs through welding strip 53, welding strip 53 is worn out to combustion improver 54, combustion improver 54 connects and is provided with some firearms 55, some firearms 55 are fixed to be set up on protection shield 51.
The welding rod 53 in this embodiment is essentially a mixture of aluminum and iron oxide, and the oxidizer 54 is essentially a magnesium rod.
The igniter 55 in this embodiment includes a thermal fuse 551, a heating resistor 552, and an oxygen-containing air box 553, the thermal fuse 551 is disposed on one side of the protection plate 51 near the heating furnace 2, the thermal fuse 551 is connected with the heating resistor 552, the heating resistor 552 is disposed on one side of the welding strip 53, the heating resistor 522 contacts the oxidant 54, the oxygen-containing air box 553 is wrapped outside the heating resistor 522, and the oxygen-containing air box 553 is fixedly disposed on the protection plate 51.
Example 4
A multi-effect reaction furnace for producing PVC as shown in fig. 1, 4 and 5, comprising: the device comprises a preheating furnace 1, a heating furnace 2, a cooling furnace 3 and a waste heat recovery mechanism 4, wherein one side of the preheating furnace 1 is connected with the heating furnace 2, one side of the heating furnace 2, which is far away from the preheating furnace 1, is connected with the cooling furnace 3, the cooling furnace 3 is provided with the waste heat recovery mechanism 4, and the waste heat recovery mechanism 4 is connected with the preheating furnace 2;
the waste heat recovery mechanism 4 comprises a heat delivery pipeline 41 and a heat storage capsule 42, one end of the heat delivery pipeline 41 is arranged inside the cooling furnace 3 in a surrounding mode, the other end of the heat delivery pipeline 41 is arranged inside the preheating furnace 1 in a surrounding mode, the heat delivery pipeline 41 is annular, the heat storage capsule 42 is arranged in the heat delivery pipeline 41, and the heat storage capsule 42 moves through a fluid medium.
The heating furnace 2 in this embodiment includes a supporting casing 21, a reaction cabin 22, a heater cabin 23, a heating rod 24, a sleeve 25, a gas circuit valve 26, a gas supply pump 27 and an air pump 28, the reaction cabin 22 is provided inside the supporting casing 21, the heater cabin 23 is provided on the top of the reaction cabin 22, the heater cabin 23 is provided with a plurality of pipes, the sleeve 25 is provided in the heater cabin 23, the sleeve 25 penetrates the reaction cabin 22, the sleeve 25 is welded to the reaction cabin 22, the heating rod 24 is provided in the sleeve 25, the heating rod 24 is in sliding contact with the sleeve 25, the gas circuit valve 26 is provided on one side of the heater cabin 23, the gas circuit valve 26 is connected to the gas supply pump 27 and the air pump 28, and the gas supply pump 26 and the air pump 27 are fixedly arranged at the bottom of the supporting casing.
The heating chamber 2 in this embodiment further comprises a detection mechanism 6, the detection mechanism 6 comprises a thermal sensor 61, a PLC controller 62 and a protective casing 63, the thermal sensor 61 is fixedly disposed on the inner side of the reaction chamber body 22 or the outer side of the casing 25, the thermal sensor 61 is connected with the PLC controller 62, the PLC controller 62 is disposed in the support casing 21, and the PLC controller 62 is connected with the gas circuit valve 26; the outer side of the thermal sensor 61 is wrapped with a protective shell 63.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (9)
1. A multi-effect reacting furnace for producing PVC is characterized in that: the method comprises the following steps: the device comprises a preheating furnace (1), a heating furnace (2), a cooling furnace (3) and a waste heat recovery mechanism (4), wherein the heating furnace (2) is connected to one side of the preheating furnace (1), the cooling furnace (3) is connected to one side, far away from the preheating furnace (1), of the heating furnace (2), the waste heat recovery mechanism (4) is arranged on the cooling furnace (3), and the waste heat recovery mechanism (4) is connected with the preheating furnace (2);
the waste heat recovery mechanism (4) comprises a heat delivery pipeline (41) and a heat storage capsule body (42), one end of the heat delivery pipeline (41) is arranged inside the cooling furnace (3) in a surrounding mode, the other end of the heat delivery pipeline (41) is arranged inside the preheating furnace (1) in a surrounding mode, the heat delivery pipeline (41) is annular, the heat storage capsule body (42) is arranged in the heat delivery pipeline (41), and the heat storage capsule body (42) moves through a fluid medium.
2. The multi-effect reaction furnace for producing PVC according to claim 1, characterized in that: the heat storage bag body (42) on be provided with the perforation, perforation one side is provided with valve (43), valve (43) splice and heat storage bag body (42) internal surface, valve (43) adopt flexible material, be provided with iodine in the heat storage bag body (42).
3. The multi-effect reaction furnace for producing PVC according to claim 1, characterized in that: heating furnace (2) outside be provided with protective layer (5), protective layer (5) include protection shield (51), joint groove (52), welding strip (53), combustion improver (54) and igniter (55), protection shield (51) are provided with a plurality ofly, protection shield (51) are the matrix and arrange in heating furnace (2) surface, protection shield (51) inboard is provided with joint groove (52), heating furnace (2) surface is provided with the buckle, joint groove (52) with the buckle cooperation, protection shield (51) edge is encircleed and is provided with welding strip (53), welding strip (53) set up in one side that protection shield (51) are close to heating furnace (2), be provided with combustion improver (54) in welding strip (53), welding strip (53) is run through in combustion improver (54), welding strip (53) is worn out in combustion improver (54), the combustion improver (54) is connected with an igniter (55), and the igniter (55) is fixedly arranged on the protection plate (51).
4. The multi-effect reaction furnace for producing PVC according to claim 3, characterized in that: the welding strip (53) is essentially a mixture of aluminum and iron oxide, and the combustion improver (54) is essentially a magnesium strip.
5. The multi-effect reaction furnace for producing PVC according to claim 3, characterized in that: the igniter (55) comprises a thermal fuse (551), a heating resistor (552) and an oxygen-carrying air box (553), the thermal fuse (551) is arranged on one side, close to the heating furnace (2), of the protection plate (51), the heating resistor (552) is connected and arranged with the thermal fuse (551), the heating resistor (552) is arranged on one side of the welding strip (53), the heating resistor (522) contacts with a combustion improver (54), the oxygen-carrying air box (553) is arranged on the outer side of the heating resistor (522) in a wrapping mode, and the oxygen-carrying air box (553) is fixedly arranged on the protection plate (51).
6. The multi-effect reaction furnace for producing PVC according to claim 1, characterized in that: the heating furnace (2) comprises a supporting shell (21), a reaction cabin body (22), a heater cabin body (23), a heating rod (24), a sleeve (25), an air passage valve (26), an air feeding pump (27) and an air suction pump (28), wherein the reaction cabin body (22) is arranged in the supporting shell (21), the heater cabin body (23) is arranged at the top of the reaction cabin body (22), the heater cabin body (23) is provided with a plurality of sleeves (25), the sleeve (25) is arranged in the heater cabin body (23), the sleeve (25) penetrates into the reaction cabin body (22), the sleeve (25) is welded with the reaction cabin body (22), the heating rod (24) is arranged in the sleeve (25), the heating rod (24) is in sliding contact with the sleeve (25), the air passage valve (26) is arranged on one side of the heater cabin body (23), and the air feeding pump (27) and the air suction pump (28) are connected, the air supply pump (26) and the air suction pump (27) are fixedly arranged at the bottom of the support shell (21).
7. The multi-effect reaction furnace for producing PVC according to claim 6, is characterized in that: the heating bin (2) is internally provided with a detection mechanism (6), the detection mechanism (6) comprises a heat sensor (61), a PLC (programmable logic controller) and a protective shell (63), the heat sensor (61) is fixedly arranged on the inner side of the reaction bin body (22) or the outer side of the sleeve (25), the heat sensor (61) is connected with the PLC (62), the PLC (62) is arranged in the supporting shell (21), and the PLC (62) is connected with the gas circuit valve (26); and a protective shell (63) is wrapped outside the thermal sensor (61).
8. The multi-effect reaction furnace for producing PVC according to claim 5, comprising automatic leakage prevention, characterized in that: the method specifically comprises the following steps:
the method comprises the following steps: the thermal fuse (551) is fused by the heat of the leakage, the heating resistor (552) obtains current to heat, the combustion improver (54) is ignited, the welding strip (53) is fused by heating, and the protection plate (51) and the heating furnace (2) are fixed.
9. The multi-effect reaction furnace for producing PVC according to claim 7, which comprises detection and automatic temperature control, and is characterized in that: the method specifically comprises the following steps:
the method comprises the following steps: detecting, wherein the heat sensor (61) detects the temperature of different areas in the reaction cabin body (22) and correspondingly sends the temperature to the PLC (62);
step two: the gas circuit valve (26) is controlled by the PLC (62) to switch according to the temperature change, and the air volume in the heater bin body (23) is changed, so that the heating position of the heating rod (24) is changed, and the temperature of each area in the reaction bin body (22) is balanced.
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| CN201911241682.4A CN110953885B (en) | 2019-12-06 | 2019-12-06 | Multi-effect reaction furnace for producing PVC (polyvinyl chloride) and working method thereof |
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| CN1161364A (en) * | 1995-12-22 | 1997-10-08 | 大阪瓦斯株式会社 | Micro-capsule dispersion liquid used for heat-storage material |
| CN206735803U (en) * | 2017-04-07 | 2017-12-12 | 浙江海洋大学 | A kind of boron nitride nano-tube annealing reaction stove |
| CN108177286A (en) * | 2017-12-28 | 2018-06-19 | 佛山市方普防护技术有限公司 | A kind of energy saving and environment friendly plastic dipping production line |
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