CN107459593B - Chlorosulfonated polyethylene wet coagulation aftertreatment system with undersize wet glue particle recovery device - Google Patents
Chlorosulfonated polyethylene wet coagulation aftertreatment system with undersize wet glue particle recovery device Download PDFInfo
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- CN107459593B CN107459593B CN201710713880.0A CN201710713880A CN107459593B CN 107459593 B CN107459593 B CN 107459593B CN 201710713880 A CN201710713880 A CN 201710713880A CN 107459593 B CN107459593 B CN 107459593B
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/34—Introducing sulfur atoms or sulfur-containing groups
- C08F8/38—Sulfohalogenation
Abstract
The invention relates to a chlorosulfonated polyethylene wet coagulation post-treatment system with a recovery device for undersize wet glue particles, which comprises a wet coagulation post-treatment device and is characterized in that: the wet glue particle recycling device comprises a wet glue particle recycling device and a side stirring component C, wherein the inlet of the wet glue particle recycling device is connected with an extruder 14 of the wet condensation aftertreatment device, the outlet of the wet condensation aftertreatment device is connected with a glue washing groove 10 of the wet condensation aftertreatment device, and the side stirring component C is respectively arranged in a condensation hot water tank 2 and an extrusion hot water tank 12 and is fixedly connected with the same. The working process is that hot water is injected into the stirring tank A, the condensation hot water tank 2 and the extrusion hot water tank 12 respectively, hot water which is discharged from the extruder 14 and is carried with undersize wet glue particles enters the stirring tank A, the slurry pump B is started, the hot water in the stirring tank A is conveyed to the glue washing tank 10, and the side stirring component C can stir the hot water separated by the vibration dewatering screen and is always in a suspension state, so that the precipitation and agglomeration can be avoided.
Description
Technical Field
The invention relates to chemical equipment, in particular to chlorosulfonated polyethylene wet coagulation extrusion post-treatment equipment, which is a chlorosulfonated polyethylene wet coagulation post-treatment system with a recovery device for undersize wet glue particles.
Background
Chlorosulfonated polyethylene rubber has excellent oil resistance and weather resistance, and is widely applied to the fields of industrial rubber tubes, automobiles and the like. At present, the post-treatment method for producing chlorosulfonated polyethylene by a solvent method mainly comprises a wet method and a dry method, wherein the wet method has the advantages of simple process flow, stable production, easy operation and the like. The wet post-treatment process comprises the following steps: the glue solution (chlorosulfonated polyethylene solution) is conveyed by a glue solution pump 1, is conveyed by a condensation hot water pump 3 together with hot water in a condensation hot water tank 2, and is conveyed into a condensation kettle 14 for condensation reaction, and gas generated by the reaction is condensed by a condenser 6 and is layered and recovered by a delayer 8. Wet glue with solvent removed primarily in the condensation kettle No. 14 enters the condensation kettle No. 2 5 through a communicating pipe to carry out secondary condensation reaction, and gas generated by the reaction is condensed by a condenser 7 and then is recovered in a layering way by a layering device 8. And (4) recovering the solvent obtained by condensation and water. Wet glue particles which are subjected to solvent removal again in the 2# condensation kettle 5 enter the 1# vibration dewatering screen 9 in a closed mode along with hot water through the U-shaped liquid level pipe for glue separation, the hot water returns to the condensation hot water tank 2 for recycling, and the wet glue enters the glue washing tank 10 in a closed mode. Hot water from the hot extrusion water tank 12 is continuously added into the glue washing tank through the hot extrusion water pump 13, wet glue is carried into the No. 2 vibrating dewatering screen 11 by the hot water in an overflow mode for secondary glue separation, and the hot water returns to the hot extrusion water tank 12 for recycling. Wet glue in the No. 2 vibrating dewatering screen 11 enters an extruder 14 for extrusion after secondary water-glue separation. Removing water and trace solvent from the glue by the combined action of mechanical extrusion, high temperature expansion and flash evaporation of an extruder, cooling the discharged material, weighing and packaging, and discharging the extruded water into a trench as shown in figure 1.
During the production process, the undersize wet glue particles can be discharged from natural water outlets of the No. 1 vibration dewatering screen 9, the No. 2 vibration screen 11 and the extruder 14, and as hot water enters the condensation hot water tank 2, the extrusion hot water tank 12 and the trench, the wet glue can be deposited and piled up to block equipment and pipelines. The production fluctuation is caused, the stable operation of the post-treatment system is seriously influenced, the cleaning is frequently carried out, the labor intensity of workers is high, wet glue after cleaning is agglomerated into large blocks or polluted, the wet glue cannot be recycled, only the landfill treatment can be carried out, and the economic loss and the environmental influence are caused.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defect of the prior art is overcome, and the chlorosulfonated polyethylene wet coagulation aftertreatment system with the undersize wet glue particle recovery device is provided, so that the chlorosulfonated polyethylene wet coagulation aftertreatment system can be prevented from depositing and agglomerating in equipment to cause equipment blockage.
The technical scheme for solving the technical problem is as follows: a chlorosulfonated polyethylene wet coagulation post-treatment system with an excessively small wet glue particle recovery device comprises a wet coagulation post-treatment device, and is characterized in that: the wet glue coagulation system is characterized by further comprising an undersize wet glue particle recovery device and a side stirring component C, wherein the inlet of the undersize wet glue particle recovery device is connected with the extruder 14 of the wet coagulation post-treatment device, the outlet of the undersize wet glue particle recovery device is connected with the glue washing tank 10 of the wet coagulation post-treatment device, and the side stirring component C is respectively arranged in the coagulation hot water tank 2 and the extrusion hot water tank 12 and is fixedly connected with the same.
The structure of the wet-process coagulation post-treatment device is as follows: the system comprises a 1# condensation kettle 4, a condensation hot water tank 2, a delayer 8, a 2# condensation kettle 5, a 1# vibration dewatering screen 9, a glue washing tank 10, a 2# vibration dewatering screen 11, an extrusion hot water tank 12 and an extruder 14, wherein an inlet at the lower end of the 1# condensation kettle 4 is connected with a glue pump 1, and a gas outlet at the top end of the 2,1# condensation kettle 4, which is connected with the delayer 8 through a first condenser 6, is connected with the condensation hot water tank 3; the lower end of the No. 2 condensation kettle 5 is connected with a No. 1 vibration dewatering screen 9, a gas outlet at the top end is connected with a delayer 8 through a second condenser 7, and the No. 1 condensation kettle 4 is communicated with the No. 2 condensation kettle 5 through a communicating pipe; 9 bottom surface exports of 1# vibration dewatering screen and gathers hot water tank 2 and be connected, the side export is connected with the first entry of washing gluey groove 10, washes gluey groove 10 overflow export and 2# vibration dewatering screen 11 be connected, the water inlet passes through extrusion hot-water pump 13 and is connected with extrusion hot-water tank 12, 5 bottom surface exports of 2# vibration dewatering screen and is connected with extrusion hot-water tank 12, the side export is connected with extruder 14.
The structure of the undersize wet glue particle recovery device is as follows: it includes agitator tank A and slurry pump B, agitator tank A top sets up the entry, the bottom sets up the export, and the entry at agitator tank A top passes through the pipeline and agglomerates after-treatment device's the nature outlet connection of extruder 14 with the wet process, and the export of agitator tank A bottom passes through the pipeline with slurry pump B's entry and is connected, and slurry pump B exports and passes through the pipeline with the second entry at wet process agglomerates after-treatment device's rubber washing groove 10 top.
And a valve F1 is arranged on a pipeline between the outlet of the slurry pump and the inlet of the top of the glue washing tank.
The side stirring part C is a commercial product of the prior art.
The working process of the invention is as follows: respectively injecting hot water into the stirring tank A, the condensation hot water tank 2 and the extrusion hot water tank 12, and opening a side stirring component C arranged in the side stirring tank A, the condensation hot water tank 1 and the extrusion hot water tank 12 when the liquid levels of the stirring tank A, the condensation hot water tank 1 and the extrusion hot water tank 12 reach 2/3; meanwhile, glue solution (chlorosulfonated polyethylene solution) is conveyed by a glue solution pump 1, is conveyed by a condensation hot water pump 3 together with hot water in a condensation hot water tank 2, and is conveyed into a condensation kettle 14 for condensation reaction, and gas generated by the reaction is condensed by a first condenser 6 and then is layered and recovered by a delayer 8. Wet glue with solvent preliminarily removed in the condensation kettle No. 14 enters the condensation kettle No. 2 5 through a communicating pipe to carry out secondary condensation reaction, and gas generated by the reaction is condensed by a second condenser 7 and then is recovered in a layering way by a layering device 8. And (4) recovering the solvent obtained by condensation and water. Wet glue particles which are subjected to solvent removal again in the No. 2 condensation kettle 5 enter the No. 1 vibration dewatering screen 9 in a closed form along with hot water through the U-shaped liquid level pipe for glue separation, the hot water with the excessively small wet glue particles returns to the condensation hot water tank 2, the hot water is stirred by the side stirring part C of the condensation hot water tank 2 and then is recycled, and the wet glue enters the glue washing tank 10 in a closed form. Hot water from the extrusion hot water tank 12 is continuously added into the glue washing tank 10 through the extrusion hot water pump 13, wet glue is brought into the No. 2 vibration dewatering screen 11 in an overflow mode by the hot water for secondary glue separation, the hot water with the undersize wet glue particles returns to the extrusion hot water tank 12, and the hot water is recycled after being stirred by the side stirring component C of the extrusion hot water tank 12. Wet glue in the No. 2 vibrating dewatering screen 11 enters an extruder 14 for extrusion after secondary glue separation. Removing moisture and trace solvent in the glue by the comprehensive action of mechanical extrusion, high-temperature expansion and flash evaporation of an extruder 14, cooling discharged materials, weighing and packaging, pumping extruded water into a stirring tank A from a natural water outlet of the extruder 14 through a pipeline, stirring, starting a slurry pump B and a valve F1 when the liquid level of the stirring tank A reaches 3/4, pumping the extruded water into a glue washing tank 10 by the slurry pump B, and carrying out secondary glue separation by carrying out overflow on undersized wet glue particles carried by the extruded water and wet glue together by hot water into a No. 2 vibration dewatering screen 11 so as to recycle the undersized wet glue particles carried by the extruded water.
According to the post-treatment system, the undersize wet glue particle recovery device can stir the extruded water which is discharged from a natural water outlet of an extruder and is carried with the undersize wet glue particles to form a stable state and recover the stable state to the glue washing tank 10, the side stirring components C respectively arranged in the condensation hot water tank 2 and the extrusion hot water tank 12 can enable the hot water which is separated by the No. 1 vibration dewatering screen 9 and the No. 2 vibration dewatering screen 11 and carried with the undersize wet glue particles to be always in a suspension state after being stirred, cannot precipitate and agglomerate and continuously return to the post-treatment system along with the hot water for recycling, the purpose of recovering the carried undersize wet glue particles is achieved, and the problems that the undersize wet glue particles cannot be recovered and the equipment is blocked due to accumulation and agglomeration in the production of a chlorosulfonated polyethylene wet coagulation post-treatment system are solved; the valve F1 can adjust the flow and keep the liquid level balance in the stirring tank A. The device has the advantages of small equipment change, simple structure, easy operation and the like, prolongs the stable production time of the post-treatment system after implementation, reduces the piling and burying of the caking wet glue, and reduces the production cost and the labor intensity.
Drawings
FIG. 1 is a schematic structural diagram of a wet coagulation post-treatment system for chlorosulfonated polyethylene of the prior art;
FIG. 2 is a schematic structural view of a chlorosulfonated polyethylene wet coagulation aftertreatment system of the present invention having an excessively small wet gum particle recovery unit;
FIG. 3 is a schematic view showing the structure of a side stirring member of the present invention in a coagulation hot water tank.
In the figure: 1. the system comprises a glue solution pump, a 2-condensation hot water tank, a 3-condensation hot water pump, a 4 # condensation kettle, a 5 # condensation kettle, a 2# condensation kettle, a 6-first condenser, a 7-second condenser, an 8-layer separator, a 9 # vibration dewatering screen, a 10-glue washing tank, a 11 # vibration dewatering screen, a 12-extrusion hot water tank, a 13-extrusion hot water pump, a 14-extrusion machine, an A stirring tank, a B sludge pump and an F1 valve.
Detailed Description
The present invention is further described with reference to the drawings and examples, which are examples of practical operations in mass production and are therefore easily understood by those skilled in the art. The invention is not to be considered as being limited to the details shown, since certain modifications may be made without departing from the scope of the invention.
Referring to fig. 2-3, the chlorosulfonated polyethylene wet coagulation post-treatment system with the undersize wet glue particle recovery device comprises a wet coagulation post-treatment device, and further comprises an undersize wet glue particle recovery device and a side stirring component C, wherein an inlet of the undersize wet glue particle recovery device is connected with an extruder 14 of the wet coagulation post-treatment device, an outlet of the undersize wet glue particle recovery device is connected with a glue washing tank 10 of the wet coagulation post-treatment device, and the side stirring component C is respectively arranged in and fixedly connected with a coagulation hot water tank 2 and an extrusion hot water tank 12.
The structure of the wet-process coagulation post-treatment device is as follows: the system comprises a 1# condensation kettle 4, a condensation hot water tank 2, a delayer 8, a 2# condensation kettle 5, a 1# vibration dewatering screen 9, a glue washing tank 10, a 2# vibration dewatering screen 11, an extrusion hot water tank 12 and an extruder 14, wherein an inlet at the lower end of the 1# condensation kettle 4 is connected with a glue pump 1 and is simultaneously connected with the condensation hot water tank 2 through a condensation hot water pump 3, and a gas outlet at the top end of the 1# condensation kettle 4 is connected with the delayer 8 through a first condenser 6; the lower end of the No. 2 condensation kettle 5 is connected with a No. 1 vibration dewatering screen 9, a gas outlet at the top end is connected with a delayer 8 through a second condenser 7, and the No. 1 condensation kettle 4 is communicated with the No. 2 condensation kettle 5 through a communicating pipe; 9 bottom surface exports of 1# vibration dewatering screen and is connected with condensation hot water jar 2, the first entry linkage of side export and glue washing groove 10, and the overflow outlet of glue washing groove 10 is connected with 2# vibration dewatering screen 11, and the water inlet passes through extrusion heat-water pump 13 and is connected with extrusion hot-water tank 12, and 11 bottom surface exports of 2# vibration dewatering screen and is connected with extrusion hot-water tank 12, and the side export is connected with extruder 14, sets up valve F1 on the pipeline between the export of slurry pump B and the glue washing groove 10 top entry.
The structure of the undersize wet glue particle recovery device is as follows: it includes agitator tank A and slurry pump B, agitator tank A top sets up the entry, the bottom sets up the export, and the entry at agitator tank A top passes through the pipeline and agglomerates after-treatment device's the nature outlet connection of extruder 14 with the wet process, and the export of agitator tank A bottom passes through the pipeline with slurry pump B's entry and is connected, and slurry pump B exports and passes through the pipeline with the second entry at wet process agglomerates after-treatment device's rubber washing groove 10 top.
This example was made using the prior art, the side agitation member C, the slurry pump B, and the valve F1 being commercially available products of the prior art.
The working process of the embodiment is as follows: respectively injecting hot water into the stirring tank A, the condensation hot water tank 2 and the extrusion hot water tank 12, and starting the stirring tank A, the condensation hot water tank 2 and a side stirring part C arranged in the extrusion hot water tank 12 when the liquid levels in the stirring tank A, the condensation hot water tank 2 and the extrusion hot water tank 12 reach 2/3; meanwhile, glue solution (chlorosulfonated polyethylene solution) is conveyed by a glue solution pump 1, is conveyed by a condensation hot water pump 3 together with hot water in a condensation hot water tank 2, and is conveyed into a condensation kettle 14 for condensation reaction, and gas generated by the reaction is condensed by a first condenser 6 and then is layered and recovered by a delayer 8. Wet glue with solvent preliminarily removed in the condensation kettle No. 14 enters the condensation kettle No. 2 5 through a communicating pipe to carry out secondary condensation reaction, and gas generated by the reaction is condensed by a second condenser 7 and then is recovered in a layering way by a layering device 8. And (4) recovering the solvent obtained by condensation and water. Wet glue particles which are subjected to solvent removal again in the 2# condensation kettle 5 enter the 1# vibration dewatering screen 9 in a closed mode along with hot water through the U-shaped liquid level pipe for glue separation, the hot water with undersize wet glue particles returns to the condensation hot water tank 2, the hot water is recycled after being stirred by the side stirring part C of the condensation hot water tank 2, and the wet glue enters the glue washing tank 10 in a closed mode. Hot water from the extrusion hot water tank 12 is continuously added into the glue washing tank 10 through the extrusion hot water pump 13, wet glue is carried into the No. 2 vibration dewatering screen 11 in an overflow mode by the hot water for secondary glue separation, the hot water carrying with undersize wet glue particles returns to the extrusion hot water tank 12, and the hot water is recycled after being stirred by the side stirring component C of the extrusion hot water tank 12. Wet glue in the No. 2 vibrating dewatering screen 11 enters an extruder 14 for extrusion after secondary glue separation. Removing water and trace solvent in the glue through the comprehensive action of mechanical extrusion, high-temperature expansion and flash evaporation of an extruder 14, weighing and packaging the discharged material after cooling, pumping the extruded water into a stirring tank A through a pipeline from a natural water outlet of the extruder 14, stirring, starting a slurry pump B and a valve F1 when the liquid level of the stirring tank A reaches 3/4, pumping the extruded water into a glue washing tank 10 through the slurry pump B, and carrying out secondary glue separation by carrying out overflow on the undersized wet glue particles carried by the extruded water and the wet glue together by hot water into a No. 2 vibration dewatering screen 11 so as to recover the undersized wet glue particles carried by the extruded water.
The operation cycle of the coagulation hot-water tank 2 and the extrusion hot-water tank 12 of the present embodiment is extended from half a month to 2 months or more, which has a remarkable effect.
Claims (1)
1. A chlorosulfonated polyethylene wet coagulation post-treatment system with an excessively small wet glue particle recovery device comprises a wet coagulation post-treatment device, and is characterized in that: the system also comprises an excessively small wet glue particle recovery device and a side stirring component (C), wherein the inlet of the excessively small wet glue particle recovery device is connected with an extruder (14) of the wet coagulation after-treatment device, the outlet of the excessively small wet glue particle recovery device is connected with a glue washing tank (10) of the wet coagulation after-treatment device, and the side stirring component (C) is respectively arranged in and fixedly connected with a coagulation hot water tank (2) and an extrusion hot water tank (12);
the structure of the wet-process coagulation post-treatment device is as follows: the device comprises a 1# condensation kettle (4), a condensation hot water tank (2), a delayer (8), a 2# condensation kettle (5), a 1# vibration dewatering screen (9), a glue washing tank (10), a 2# vibration dewatering screen (11), an extrusion hot water tank (12) and an extruder (14), wherein an inlet at the lower end of the 1# condensation kettle (4) is connected with a glue solution pump (1) and is simultaneously connected with the condensation hot water tank (2) through a condensation hot water pump (3), and a gas outlet at the top end of the 1# condensation kettle (4) is connected with the delayer (8) through a first condenser (6); the lower end of the No. 2 condensation kettle (5) is connected with the No. 1 vibration dewatering screen (9), a gas outlet at the top end is connected with the delayer (8) through a second condenser (7), and the No. 1 condensation kettle (4) is communicated with the No. 2 condensation kettle (5) through a communicating pipe; the bottom outlet of the No. 1 vibrating dewatering screen (9) is connected with the condensation hot water tank (2), the side outlet is connected with the first inlet of the glue washing tank (10), the overflow outlet of the glue washing tank (10) is connected with the No. 2 vibrating dewatering screen (11), the water inlet is connected with the extrusion hot water tank (12) through the extrusion hot water pump (13), the bottom outlet of the No. 2 vibrating dewatering screen (11) is connected with the extrusion hot water tank (12), the side outlet is connected with the extruder (14), and a valve (F1) is arranged on a pipeline between the outlet of the slurry pump (B) and the inlet at the top of the glue washing tank (10);
the structure of the undersize wet glue particle recovery device is as follows: it includes agitator tank (A) and slurry pump (B), agitator tank (A) top sets up the entry, the bottom sets up the export, and the entry at agitator tank (A) top passes through the pipeline and the natural drainage outlet connection of wet process coagulation aftertreatment device's extruder (14), and the export of agitator tank (A) bottom passes through the pipeline connection with the entry of slurry pump (B), and the export of slurry pump (B) passes through the pipeline connection with the second entry at wet process coagulation aftertreatment device's washing jiao chi (10) top.
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