CN212293387U - PBS's apparatus for producing - Google Patents
PBS's apparatus for producing Download PDFInfo
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- CN212293387U CN212293387U CN202021005039.XU CN202021005039U CN212293387U CN 212293387 U CN212293387 U CN 212293387U CN 202021005039 U CN202021005039 U CN 202021005039U CN 212293387 U CN212293387 U CN 212293387U
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- butanediol
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- esterification
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Abstract
The utility model provides a PBS production device, which comprises a pulping system for mixing oxalic acid melt and butanediol; an esterification reaction system for carrying out esterification reaction on the mixed slurry; a THF recovery system for recovering THF produced in the esterification reaction; a polycondensation reaction system for performing polycondensation and polymerization on an esterified product generated by the esterification reaction; a packaging system for granulating and packaging the melt; a tail gas treatment system for treating tail gas generated in the production process. THF generated in the production process is recovered through a THF recovery system, so that raw materials are utilized to the maximum extent, and waste is avoided. And tail gas generated in each reaction kettle is treated by using a tail gas treatment system, and collected wastewater is uniformly delivered to a sewage treatment plant, so that the environment pollution is avoided.
Description
Technical Field
The utility model belongs to the technical field of biodegradable high polymer material, concretely relates to PBS's apparatus for producing.
Background
With the increasing white pollution, the development of a biodegradable plastic becomes one of effective ways to alleviate the problem.
Poly (butylene succinate) PBS for short is a biodegradable high polymer material. The high-strength PBS has good comprehensive performance, the mechanical property can meet daily requirements, the performance is stable in the normal storage and use processes, and meanwhile, the PBS has excellent processability and good heat resistance. PBS is an ideal material to replace traditional non-interpretable plastics.
As publication number CN202829900U discloses a production facility of olybuthylenesuccinate, include through pipe connection be used for holding reaction substrate's prepolymerization cauldron, condenser and separator, the prepolymerization cauldron with still be provided with a butanediol absorbing device on the pipeline between the condenser, butanediol absorbing device includes one establish ties the prepolymerization cauldron with absorption tower on the pipeline between the condenser, with absorption tower cauldron and circulating pump that the absorption tower bottom passes through pipe connection, the absorption tower cauldron still through the pipeline with the top of absorption tower is connected, the circulating pump sets up in connecting the absorption tower cauldron with on the pipeline at the top of absorption tower. The utility model discloses a production facility of olybuthylenesuccinate can retrieve excessive butanediol in the production process of olybuthylenesuccinate (PBS), avoid the difficult problem of collecting of condensation process condenser jam and tetrahydrofuran to appear in advance.
PBS production facility among the prior art lacks effective processing to waste material, the waste gas that produce in the production process for the production process causes the pollution to the environment, but the anti-effectual utilization of some additional product in the production process simultaneously, causes the waste of raw materials.
SUMMERY OF THE UTILITY MODEL
In view of the above insufficiency, the utility model aims at providing a PBS's apparatus for producing.
The utility model provides a following technical scheme:
the PBS production device comprises a pulping system for mixing oxalic acid melt and butanediol; an esterification reaction system for carrying out esterification reaction on the mixed slurry; a THF recovery system for recovering THF produced in the esterification reaction; a polycondensation reaction system for performing polycondensation and polymerization on an esterified product generated by the esterification reaction; a packaging system for granulating and packaging the melt; a tail gas treatment system for treating tail gas generated in the production process; the pulping system comprises a pulp preparation kettle; the gas phase condenser is arranged at the top of the slurry preparation kettle; the butanediol metering device is connected with the pipeline arranged at the top of the slurry preparation kettle and is used for metering the amount of butanediol entering the slurry preparation kettle; the oxalic acid melt metering device is connected with the pipeline arranged at the top of the slurry preparation kettle and is used for metering the quantity of the oxalic acid melt entering the slurry preparation kettle; a slurry pumping pump connected with a pipeline arranged at the bottom of the slurry preparation kettle; the butanediol tank is connected with the butanediol metering device through a pipeline and is used for providing butanediol; the oxalic acid melt tank is connected with the oxalic acid melt metering device through a pipeline and is used for providing oxalic acid melt;
the esterification reaction system comprises an esterification kettle connected with the slurry pumping pump through a pipeline; the catalyst injector is connected with a pipeline arranged at the top of the esterification kettle; an esterification pumping pump connected with the pipeline arranged at the bottom of the esterification kettle; the butanediol recovery tower is connected with the pipeline arranged at the top of the esterification kettle and is used for separating butanediol from the gas generated by the esterification kettle for recovery; a butanediol pumping pump connected with a pipeline arranged at the bottom of the butanediol recovery tower, wherein a pipeline at one side of the butanediol pumping pump is connected with the butanediol recovery tower, and a pipeline at the other side of the butanediol pumping pump is connected with a pipeline between the butanediol metering device and the butanediol tank;
the THF recovery system comprises a distillation tower connected and arranged on a pipeline at the top of the esterification kettle and used for distilling the THF aqueous solution; the distillation tower is provided with a reboiler; the bottom of the distillation tower is connected with a first wastewater collection tank through a pipeline and is used for collecting wastewater generated in the distillation process; a condenser connected to the top pipe of the distillation column for condensing the vaporized THF into a liquid state; the first water tank is connected with a pipeline arranged at the top of the condenser and used for providing condensed water for the condenser; a THF collecting tank connected to the bottom pipe of the condenser for collecting THF condensed into liquid state;
the polycondensation reaction system comprises a prepolymerization kettle connected with the esterified substance pumping pump through a pipeline; a prepolymer pumping pump connected with a pipeline arranged at the bottom of the prepolymerization kettle; a prepolymer filter connected to the prepolymer pump through a pipe; a polymerizer connected to the prepolymer filter through a pipe; a melt pumping pump connected with a pipeline arranged at the bottom of the polymerization kettle; and the melt filter is connected with the melt pumping pump through a pipeline.
The tail gas treatment system comprises a tail gas shower tower which is connected with pipelines arranged at the tops of the esterification kettle, the prepolymerization kettle and the polymerization kettle and is used for absorbing tail gas by water spraying; the water tank II is connected with the tail gas shower tower through a pipeline and is used for providing spraying water for the tail gas shower tower; and the waste water collecting tank II is connected with the tail gas shower tower through a pipeline and is used for collecting the waste water absorbing the tail gas.
The packaging system is connected with the melt filter through a pipeline.
The utility model has the advantages that:
THF generated in the production process is recovered through a THF recovery system, so that raw materials are utilized to the maximum extent, and waste is avoided. And tail gas generated in each reaction kettle is treated by using a tail gas treatment system, and collected wastewater is uniformly delivered to a sewage treatment plant, so that the environment pollution is avoided.
Drawings
Fig. 1 is a schematic view of the connection structure of the production equipment of the present invention.
Labeled as: 101 is a slurry preparation kettle, 102 is a gas phase condenser, 103 is a butanediol tank, 104 is an oxalic acid melt tank, 105 is a butanediol metering device, 106 is an oxalic acid melt metering device, 107 is a slurry pumping pump, 201 is an esterification kettle, 202 is a catalyst injector, 203 is an esterification pumping pump, 204 is a butanediol recovery tower, 205 is a butanediol pumping pump, 301 is a distillation tower, 302 is a water tank I, 303 is a condenser, 304 is a reboiler, 305 is a wastewater collection tank I, 306 is a THF collection tank, 402 is a prepolymer filter, 403 is a prepolymer pumping pump, 405 is a prepolymerization kettle, 406 is a melt filter, 407 is a melt pumping pump, 408 is a polymerization kettle, 501 is a cutting mechanism, 502 is a packing mechanism, 601 is a wastewater collection tank II, 602 is a tail gas shower tower, and 603 is a water tank II.
Detailed Description
As shown in the figure, the PBS production device comprises a pulping system, an esterification reaction system, a THF recovery system, a polycondensation reaction system, a packaging system and a tail gas treatment system. The pulping system consists of a pulp preparation kettle 101, a gas phase condenser 102, a butanediol tank 103, an oxalic acid melt tank 104, a butanediol metering device 105, an oxalic acid melt metering device 106 and a pulp pumping pump 107, wherein the gas phase condenser 102 is arranged at the top of the pulp preparation kettle 101. The butanediol tank 103 is connected with a butanediol metering device 105 through a pipeline, the butanediol metering device 105 is connected with the top of the slurry preparation kettle 101 through a pipeline, and the butanediol metering device 105 can meter the amount of butanediol injected into the slurry preparation kettle 101. The oxalic acid melt tank 104 is connected with an oxalic acid melt metering device 106 through a pipeline, the oxalic acid melt metering device 106 is connected with the top of the slurry preparation kettle 101 through a pipeline, and the oxalic acid melt metering device 106 can meter the amount of the oxalic acid melt injected into the slurry preparation kettle 101. Butanediol and oxalic acid melt are mixed and beaten in the slurry preparation kettle 101, and the beaten slurry is pumped into the esterification kettle 201 by the slurry pump 107.
The esterification reaction system consists of an esterification kettle 201, a catalyst injector 202, an esterification product pumping pump 203, a butanediol recovery tower 204 and a butanediol pumping pump 205. The catalyst injector 202 is arranged at the top of the esterification kettle 201, the catalyst injector 202 injects a catalyst into the esterification kettle 201, and slurry pumped into the esterification kettle 201 by the slurry pump 107 is subjected to esterification reaction at a reaction temperature of 160-220 ℃ and a reaction pressure of 30-90 KPa (A). The esterification product produced by the esterification reaction is pumped to the prepolymerization reactor 405 by an esterification product pump 203. Butanediol generated by the esterification reaction enters a butanediol recovery tower 204 through a pipeline connected to the top of the esterification kettle 201 for recovery, and the recovered butanediol is pumped to a pipeline between the butanediol metering device 105 and the butanediol tank 103 through a butanediol pumping pump 205 for reuse. The THF-containing aqueous solution produced by the esterification reaction is fed into the distillation column 301 through a line connected to the top of the esterification reactor 201 for treatment.
The THF recovery system is composed of a distillation tower 301, a water tank I302, a condenser 303, a reboiler 304, a wastewater collection tank I305 and a THF collection tank 306. The distillation tower 301 is connected with the top of the esterification kettle 301 through a pipeline, a reboiler 304 is installed on the distillation tower 301, THF-containing aqueous solution enters the distillation tower 301, the reboiler 304 of the distillation tower kettle is heated by steam, waste liquid enters a first wastewater collection tank 305 installed on the distillation tower 301 and then is uniformly sent to a sewage treatment plant for treatment, vaporized THF enters a condenser 303 through a pipeline arranged at the top of the distillation tower 301, the condenser 303 is supplied with water by a first pipeline water tank 302 installed at the top of the condenser 303 to condense the vaporized THF, and the THF condensed into liquid state is collected through a THF collection tank 306 installed on a pipeline at the bottom of the condenser 303.
The polycondensation reaction system consists of a prepolymer filter 402, a prepolymer pump 403, a prepolymerization reactor 405, a melt filter 406, a melt pump 407 and a polymerization reactor 408. The esterification product enters a prepolymerization kettle 405 and then reacts at a reaction temperature of 230-250 ℃ and 1 wave
The prepolycondensation reaction is carried out at a reaction pressure of 10KPa (A). The reacted prepolymer is pumped by a prepolymer pump 403, filtered by a prepolymer filter 402, and finally injected into a polymerizer 408. The prepolymer enters a polymerization kettle 408 and then undergoes polymerization reaction at a reaction temperature of 230-250 ℃ and a reaction pressure of 0.02-1 KPa (A).
The melt after the polymerization reaction is pumped by a melt pump 407, filtered by a melt filter 406, enters a material cutting mechanism 501 for cutting, and is packaged by a packaging mechanism 502.
The tail gas treatment system consists of a second waste water collecting tank 601, a tail gas shower tower 602 and a second water tank 603. The tail gas shower tower 602 is connected with pipelines arranged at the tops of the esterification kettle 201, the prepolymerization kettle 405 and the polymerization kettle 408. Tail gas generated in reaction of each reaction kettle enters a tail gas shower tower 602 through a pipeline, the top of the tail gas shower tower 602 is connected with a water tank II 603 through a pipeline, water in the water tank II 603 enters the tail gas shower tower 602 to spray the tail gas, waste water absorbing the tail gas enters a waste water collecting tank II 601 connected with the bottom of the tail gas shower tower 602 through a pipeline, and then waste water in the waste water collecting tank II 601 is sent to a sewage treatment plant for treatment in a unified mode.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The PBS production device comprises a pulping system for mixing oxalic acid melt and butanediol; an esterification reaction system for carrying out esterification reaction on the mixed slurry; a THF recovery system for recovering THF produced in the esterification reaction; a polycondensation reaction system for performing polycondensation and polymerization on an esterified product generated by the esterification reaction; a packaging system for granulating and packaging the melt; the tail gas processing system that produces carries out processing to tail gas in the production process, its characterized in that: the pulping system comprises a pulp preparation kettle (101); a gas phase condenser (102) arranged at the top of the slurry preparation kettle (101); the butanediol metering device (105) is connected with the pipeline arranged at the top of the slurry preparation kettle (101) and is used for metering the amount of butanediol entering the slurry preparation kettle (101); the oxalic acid melt metering device (106) is connected with a pipeline arranged at the top of the slurry preparation kettle (101) and is used for metering the amount of the oxalic acid melt entering the slurry preparation kettle (101); a slurry pumping pump (107) connected and arranged on a pipeline at the bottom of the slurry preparation kettle (101); a butanediol tank (103) connected by a conduit to a butanediol metering device (105) for providing butanediol; an oxalic acid melt tank (104) connected with an oxalic acid melt metering device (106) through a pipeline and used for providing oxalic acid melt;
the esterification reaction system comprises an esterification kettle (201) connected with the slurry pumping pump (107) through a pipeline; connecting a catalyst injector (202) arranged on a top pipeline of the esterification kettle (201); an esterification pumping pump (203) connected with the pipeline arranged at the bottom of the esterification kettle (201); the butanediol recovery tower (204) is connected with the pipeline arranged at the top of the esterification kettle (201) and is used for separating butanediol from the gas generated by the esterification kettle (201) for recovery; the butanediol pumping pump (205) is connected and arranged on a pipeline at the bottom of the butanediol recovery tower (204), a pipeline at one side of the butanediol pumping pump (205) is connected with the butanediol recovery tower (204), and a pipeline at the other side is connected with a pipeline between the butanediol metering device (105) and the butanediol tank (103);
the THF recovery system comprises a distillation column (301) connected to a top pipe disposed on the esterification tank (201) for distilling an aqueous solution of THF; the distillation column (301) is provided with a reboiler (304); the bottom of the distillation tower (301) is connected with a first wastewater collection tank (305) through a pipeline and used for collecting wastewater generated in the distillation process; connecting a condenser (303) arranged on the top pipe of the distillation column (301) for condensing the vaporized THF into a liquid state; a first water tank (302) arranged on the top pipeline of the condenser (303) is connected and used for providing condensed water for the condenser (303); a THF collection tank (306) disposed on the bottom pipe of the condenser (303) is connected for collecting THF condensed into a liquid state;
the polycondensation reaction system comprises a prepolymerization kettle (405) connected with the esterification pumping pump (203) through a pipeline; a prepolymer pumping pump (403) connected to the bottom pipe of the prepolymerization reactor (405); a prepolymer filter (402) connected to a prepolymer pump (403) through a pipe; a polymerizer (408) connected to the prepolymer filter (402) through a pipe; a melt pump (407) connected to the bottom pipe of the polymerizer (408); a melt filter (406) connected to a melt pump (407) via a conduit.
2. The apparatus for producing a PBS according to claim 1, wherein: the tail gas treatment system comprises a tail gas shower tower (602) connected with the top pipelines of the esterification kettle (201), the prepolymerization kettle (405) and the polymerization kettle (408) and used for absorbing tail gas by water spraying; a water tank II (603) connected with the tail gas shower tower (602) through a pipeline and used for providing spraying water for the tail gas shower tower (602); and a second wastewater collection tank (601) connected with the tail gas shower tower (602) through a pipeline and used for collecting the wastewater absorbed with the tail gas.
3. The apparatus for producing a PBS according to claim 1, wherein: the packaging system comprises a blanking mechanism (501) connected to the melt filter (406) by a pipe; and the packaging mechanism (502) is connected with the cutting mechanism (501).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021005039.XU CN212293387U (en) | 2020-06-04 | 2020-06-04 | PBS's apparatus for producing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021005039.XU CN212293387U (en) | 2020-06-04 | 2020-06-04 | PBS's apparatus for producing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212293387U true CN212293387U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021005039.XU Active CN212293387U (en) | 2020-06-04 | 2020-06-04 | PBS's apparatus for producing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212293387U (en) |
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2020
- 2020-06-04 CN CN202021005039.XU patent/CN212293387U/en active Active
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