CN101104585A - Device for producing methyl methacrylate by using waste and old organic glass and using method thereof - Google Patents
Device for producing methyl methacrylate by using waste and old organic glass and using method thereof Download PDFInfo
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- CN101104585A CN101104585A CNA2007100690384A CN200710069038A CN101104585A CN 101104585 A CN101104585 A CN 101104585A CN A2007100690384 A CNA2007100690384 A CN A2007100690384A CN 200710069038 A CN200710069038 A CN 200710069038A CN 101104585 A CN101104585 A CN 101104585A
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Abstract
The invention discloses a device to produce methyl methacrylate (MMA) with waste synthetic glass. The cracking unit comprises an airproof cracking reaction cauldron with an oil bath jacket; the airproof cracking reaction cauldron is connected to a crude product gathering tank through a pipeline which passes through a condenser which is connected above the crude product gathering tank; a stirrer is arranged in the airproof cracking reaction cauldron. The distillation unit comprises an airproof distillation reaction cauldron with an oil bath jacket; the airproof distillation reaction cauldron is connected to a finished product gathering tank through a pipeline which passes through a condenser which is connected above the finished product gathering tank. The condensers of the crude product gathering tank and the finished product gathering tank can be replaced with two relief cooling wells. The characteristic of the invention is that all the process of heating, transporting, cooling, gathering, complete cracking and distilling of the raw materials are done in an thoroughly airproof device, effectively controlling the generation and the emission of the gas MMA, meeting the requirements of green technology.
Description
Technical field
The invention belongs to chemical industry or environmental technology field, relate to a kind of equipment and application thereof that is applied to the tool environment-friendly function of chemical industry.Device and using method thereof especially for the airtight cracking reuse of waste and old organic glass.
Background technology
The waste and old organic glass pyrolysis recycle is that methyl methacrylate (MMA) is a kind of resource recovery process, the typical case who belongs to recycling economy, but in production process in the past, because the backwardness of production technique, caused serious secondary environmental pollution in the regenerative process again, mainly showed pollution, formed the distinctive stench of MMA ambient atmosphere.For this reason, be necessary to design a kind of green production process and corollary apparatus that does not cause secondary environmental pollution.The waste and old organic glass pyrolysis recycle is that the technology of methyl methacrylate (MMA) has following two processes usually: 1, Pintsch process process: under higher temperature (300 ℃～400 ℃), make waste and old organic glass (PMMA) be cracked into thick MMA monomer.2, thick MMA treating process: the thick MMA monomer of cracking gained after distillation, is obtained highly purified MMA monomer.The generation and the uncontrollable discharge of waste gas are all arranged in these two production processes, cause secondary environmental pollution.The reason that we have analyzed the stench generation is because the gas that waste and old organic glass produces among the MMA in cracking and still-process does not have total condensation to become liquid, the resistance to air loss of whole cracking simultaneously and water distilling apparatus is not tight, cause a part of MMA gas inorganization to be overflowed, formed the stench of feeling sick.
Summary of the invention
The objective of the invention is to solve the waste and old organic glass pyrolysis recycle and be the problem of environmental pollution in methyl methacrylate (MMA) technology, for this reason, a kind of waste and old organic glass of cracking in confined conditions is provided and it is regenerated as the device of methyl methacrylate (MMA), the using method of this device is provided simultaneously.
The device of producing methyl methacrylate with waste and old organic glass comprises: cracker and water distilling apparatus.
As shown in Figure 1: cracker comprises the airtight scission reaction still (1) of a band oil bath chuck (2), with pipeline condenser (4) and airtight scission reaction still (1) are connected to crude product holding tank (5), connect condenser (6) in the emptying place top of crude product holding tank (5); Airtight scission reaction still (1) is installed a whipping appts (3).Can solve cracking technology at atmospheric pressure state.
As shown in Figure 2: water distilling apparatus comprises the airtight distillation reactor (7) of a strap clamp cover (8), through distillation tower (9), to elaboration holding tank (11), connects condenser (12) in the emptying place top of elaboration holding tank (11) with pipe connection condenser (10).Can solve distil process at atmospheric pressure state.
As shown in Figure 3: on the basis of Fig. 1 scheme, the condenser (6) that cracker crude product holding tank (5) top connects is removed, change into and connect two cold wells (18), (20), between two cold wells (18), (20), connect a vacuum pump (19) with sealing-duct, emptying place top at Leng Jing (20) connects condenser (21), forms cracker as shown in Figure 3.Can solve cracking technology at decompression state.
As shown in Figure 4: on the basis of Fig. 2 scheme, the condenser (12) that water distilling apparatus elaboration holding tank (11) top connects is removed, change into and connect two cold wells (27), (29), between two cold wells (27), (29), connect a vacuum pump (28) with sealing-duct, emptying place top at Leng Jing (29) connects condenser (30), forms water distilling apparatus as shown in Figure 4.Can solve distil process at decompression state.
Use the method for apparatus of the present invention to be following technical process:
One, atmospheric cracking technology: with the airtight distillation reactor (1) of waste and old organic glass raw material input band oil bath chuck (2), through high temperature oil bath heating, airtight stirring, make it be cracked into thick MMA gas, the thick MMA gas of cracking gained is entered condenser (4) by pipeline, enter crude product holding tank (5) after the cooling, the MMA tail gas of minute quantity is condensed into the MMA liquids recovery through the condenser (6) that holding tank emptying place top connects.
Two, air distillation technology: the airtight distillation reactor (7) that the thick MMA of cracking gained is entered water distilling apparatus by closed conduit, through distillation tower (9) rectifying, after MMA gas enters condenser (10) cooling by pipeline, be refined into highly purified MMA, enter elaboration holding tank (11) and collect, the MMA tail gas of minute quantity is condensed into the MMA liquids recovery through the condenser (12) that holding tank (11) emptying place top connects.
Three, decompression cracking technology: with the airtight distillation reactor (13) of waste and old organic glass raw material input band oil bath chuck (14), through high temperature oil bath heating, airtight stirring, with vacuum pump (19) through front and back cold well (18), (20) vacuum suction, make its decompression be cracked into thick MMA gas, the thick MMA gas of cracking gained is entered condenser (16) by pipeline, enter crude product holding tank (17) after the cooling, the MMA tail gas of minute quantity is condensed into the MMA liquids recovery through the condenser (21) that holding tank emptying place top connects.
Four, reduced pressure distillation process: the airtight distillation reactor (22) that the thick MMA of cracking gained is entered water distilling apparatus by closed conduit, with vacuum pump (28) through front and back cold well (27), (29) vacuum suction, through distillation tower (24) underpressure distillation, after MMA gas enters condenser (25) cooling by pipeline, be refined into highly purified MMA, enter elaboration holding tank (26) and collect, the MMA tail gas of minute quantity is condensed into the MMA liquids recovery through the condenser (30) that cold well (29) emptying place top connects.
This waste and old organic glass of cracking in confined conditions provided by the invention also is regenerated as the device of methyl methacrylate (MMA) with it, the using method of this device is provided simultaneously, effective control has been carried out in generation and discharging to the waste gas of these two processes, thereby reaches green production.
The device that the present invention adopts and use the technology of this device effectively to control the generation and the effusion of MMA foul gas has reached the requirement of friendly process.
Description of drawings
Fig. 1 is the equipment and the connection diagram thereof of atmospheric cracking device.Among the figure: 1, scission reaction still, 2, the oil bath chuck, 3, agitator, 4, condenser, 5, the crude product holding tank, 6, the condenser on the blow-down pipe.
Fig. 2 is the equipment and the connection diagram thereof of atmospheric distillation plant.Among the figure: 7, distillation reactor, 8, chuck, 9, distillation tower, 10, condenser, 11, the elaboration holding tank, 12, the condenser on the blow-down pipe.
Fig. 3 is the equipment and the connection diagram thereof of decompression cracker.Among the figure: 13, scission reaction still, 14, the oil bath chuck, 15, agitator, 16, condenser, 17, the crude product holding tank, 18, Leng Jing, 19, vacuum pump, 20, Leng Jing, 21, condenser.
Fig. 4 is the equipment and the connection diagram synoptic diagram thereof of vacuum distillation apparatus.Among the figure: 22, distillation reactor, 23, chuck, 24, distillation tower, 25, condenser, 26, the elaboration holding tank, 27, Leng Jing, 28, vacuum pump, 29, Leng Jing, 30, condenser.
Fig. 5 is for using the normal pressure process flow sheet of apparatus of the present invention.
Fig. 6 is for using the decompression process flow sheet of apparatus of the present invention.
Embodiment
The detailed description of this technology cracker, referring to accompanying drawing 1, accompanying drawing 3:
1,,, guarantees not leak to the processing of having carried out being tightly connected of whole cracker for avoiding the generation of waste gas.Mounted cracker after vacuum pump is bled, is closed respective valves after 24 hours, guarantee that vacuum do not leak, illustrate that the device resistance to air loss is good.
2, adopting stainless steel cauldron is cracking still.
3, the cracking still cracking process adopts the cracking of naked light direct heating, or the reactor oil bath of selecting the strap clamp cover for use, is safety with the latter.
4, can adopt vacuum unit to extract splitting gas, accelerate thermo-cracking speed minimizing energy waste so that cracking temperature is reduced.
5, can select agitator to be installed on cracking still, so that stir waste and old organic glass when cracking, making is heated fully improves heating pyrolyze speed minimizing energy waste.
6, the MMA crude product of cracking gained is after the refrigerating unit cooling, and cooling fluid flows into the crude product holding tank and collects, and a condenser is installed on the blow-down pipe of holding tank, makes the holding tank that flows to that becomes liquid after condensation of emptying gas, thereby has stopped escaping of MMA waste gas.
7, as adopting the decompression cracking, for limiting exhaust gas emission to greatest extent, employing is handled with lower device: the interior refrigeration system of installing of surge tank that connects holding tank, make surge tank become " cold well ", through the condensation of the cold well of two-stage, most of MMA waste gas has been condensed into the MMA liquids recovery, and the minute quantity MMA tail gas of discharging behind the cold well in the second stage is caught through the condenser of emptying place again, reclaim MMA liquid, the effusion of so just having stopped foul smell.
The invention of friendly process water distilling apparatus, referring to accompanying drawing 2, accompanying drawing 4:
1, mounted water distilling apparatus carries out leakage check and handles, and closes related valve after vacuum pump is bled, and after 24 hours, guarantees that vacuum do not leak, and illustrates that the device resistance to air loss is intact.
2, cracking is collected gained MMA crude product after the distillation tower distillation, collect required distillate, after the cooling system condensation, make highly purified MMA flow into the elaboration holding tank, on the blow-down pipe of elaboration holding tank condenser is installed, the gas that makes emptying is stopped the malodorous effusion of MMA gas through being condensed into the inflow elaboration holding tank of liquid.
3, as adopting underpressure distillation, for limiting exhaust gas emission to greatest extent, condensation through the cold well of two-stage, most of MMA waste gas has been condensed into the MMA liquids recovery, the minute quantity MMA tail gas of discharging behind the cold well in the second stage is caught through the condenser of emptying place again, reclaim MMA liquid, so just stopped the foul smell in the still-process and overflowed.
Sum up: handle through above scheme, make basically in the process of waste and old organic glass reclaiming MMA not produce, make it to become the typical case of the recycling economy pattern of a green atmospheric pollution.
Claims (4)
1. produce the device of methyl methacrylate with waste and old organic glass, it is characterized in that: comprise cracker and water distilling apparatus; Cracker comprises the airtight scission reaction still (1) of a band oil bath chuck (2), by condenser (4) airtight scission reaction still (1) is connected crude product holding tank (5) with pipeline, emptying place top at crude product holding tank (5) connects condenser (6), and airtight scission reaction still (1) is installed an agitator (3); Water distilling apparatus comprises the airtight distillation reactor (7) of a strap clamp cover (8), and distillation tower (9) connects condenser (10) with closed conduit, is connected to elaboration holding tank (11) again, connects condenser (12) in the emptying place top of elaboration holding tank (11).
2. produce the device of methyl methacrylate according to claim 1 with waste and old organic glass, it is characterized in that: the condenser (6) that cracker crude product holding tank (5) top connects is removed, change into and connect cold well (18), connect cold well (20) by vacuum pump (19), cold well (20) emptying place top connects condenser (21).
3. produce the device of methyl methacrylate according to claim 1 with waste and old organic glass, it is characterized in that: the condenser (12) that water distilling apparatus elaboration holding tank (11) top connects is removed, change into and connect cold well (27), connect cold well (29) by vacuum pump (28), cold well (29) emptying place top connects condenser (30).
4. produce the using method of methyl methacrylate device according to claim 1 with waste and old organic glass, it is characterized in that: with the airtight distillation reactor of waste and old organic glass raw material input band oil bath chuck, make it be cracked into MMA gas through airtight stirring, high temperature oil bath heating, with the MMA gas of cracking gained through condenser, the cooling back flows into the crude product holding tank, and the MMA tail gas of minute quantity becomes the MMA liquids recovery through holding tank emptying place condenser condenses; Or under reduced pressure, the minute quantity tail gas reclaims through the cooling of cold well of vacuum pump front and back stages and emptying place efficient condenser; The MMA crude product of cracking gained is inputed to airtight distillation reactor by closed conduit, through distillation tower rectifying, flow into the elaboration holding tank again after the condenser cooling, the MMA tail gas of minute quantity becomes MMA liquid through holding tank emptying place condenser condenses; Or under reduced pressure, the minute quantity tail gas reclaims through the cooling of cold well of vacuum pump front and back stages and emptying place efficient condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100690384A CN101104585A (en) | 2007-06-01 | 2007-06-01 | Device for producing methyl methacrylate by using waste and old organic glass and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100690384A CN101104585A (en) | 2007-06-01 | 2007-06-01 | Device for producing methyl methacrylate by using waste and old organic glass and using method thereof |
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| CN101104585A true CN101104585A (en) | 2008-01-16 |
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| CNA2007100690384A Pending CN101104585A (en) | 2007-06-01 | 2007-06-01 | Device for producing methyl methacrylate by using waste and old organic glass and using method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140183A (en) * | 2010-12-16 | 2011-08-03 | 浙江省天正设计工程有限公司 | Process and technological equipment for continuously cracking and recycling waste organic glass |
| CN104211984A (en) * | 2014-09-26 | 2014-12-17 | 临安清云环保设备有限公司 | Rotary spiral waste organic glass propelling and continuous splitting decomposition method and device |
| CN105367420A (en) * | 2015-12-03 | 2016-03-02 | 南京绿帝环保能源科技有限公司 | Acrylic regenerating apparatus |
| CN105541622A (en) * | 2016-01-05 | 2016-05-04 | 湖州丰瑞塑化有限公司 | Organic glass recycling process equipment |
| CN105921079A (en) * | 2016-05-09 | 2016-09-07 | 怀化学院 | Cracking device and method for polysiloxane oligomer containing long-chain fluoroalkyl |
| CN106512879A (en) * | 2016-03-25 | 2017-03-22 | 中国石油集团东北炼化工程有限公司吉林设计院 | Method for preventing caking in esterification reactors in preparation of methyl methacrylate |
| CN111570941A (en) * | 2020-05-28 | 2020-08-25 | 浙江来福智能科技有限公司 | Energy-saving environment-friendly electric spark oil residue separating and recycling machine |
| CN111662175A (en) * | 2020-06-04 | 2020-09-15 | 麻城市中优顺建材科技有限公司 | Method and system for preparing MMA (methyl methacrylate) monomer by recycling waste acrylic |
| CN115245789A (en) * | 2021-12-17 | 2022-10-28 | 浙江理工大学 | Phenol extraction device capable of operating for long time |
-
2007
- 2007-06-01 CN CNA2007100690384A patent/CN101104585A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140183B (en) * | 2010-12-16 | 2012-11-28 | 浙江省天正设计工程有限公司 | Process and technological equipment for continuously cracking and recycling waste organic glass |
| CN102140183A (en) * | 2010-12-16 | 2011-08-03 | 浙江省天正设计工程有限公司 | Process and technological equipment for continuously cracking and recycling waste organic glass |
| CN104211984B (en) * | 2014-09-26 | 2017-01-25 | 临安清云环保设备有限公司 | Rotary spiral waste organic glass propelling and continuous splitting decomposition method and device |
| CN104211984A (en) * | 2014-09-26 | 2014-12-17 | 临安清云环保设备有限公司 | Rotary spiral waste organic glass propelling and continuous splitting decomposition method and device |
| CN105367420A (en) * | 2015-12-03 | 2016-03-02 | 南京绿帝环保能源科技有限公司 | Acrylic regenerating apparatus |
| CN105541622A (en) * | 2016-01-05 | 2016-05-04 | 湖州丰瑞塑化有限公司 | Organic glass recycling process equipment |
| CN106512879A (en) * | 2016-03-25 | 2017-03-22 | 中国石油集团东北炼化工程有限公司吉林设计院 | Method for preventing caking in esterification reactors in preparation of methyl methacrylate |
| CN105921079A (en) * | 2016-05-09 | 2016-09-07 | 怀化学院 | Cracking device and method for polysiloxane oligomer containing long-chain fluoroalkyl |
| CN111570941A (en) * | 2020-05-28 | 2020-08-25 | 浙江来福智能科技有限公司 | Energy-saving environment-friendly electric spark oil residue separating and recycling machine |
| CN111570941B (en) * | 2020-05-28 | 2021-02-12 | 浙江来福智能科技有限公司 | Energy-saving environment-friendly electric spark oil residue separating and recycling machine |
| CN111662175A (en) * | 2020-06-04 | 2020-09-15 | 麻城市中优顺建材科技有限公司 | Method and system for preparing MMA (methyl methacrylate) monomer by recycling waste acrylic |
| CN115245789A (en) * | 2021-12-17 | 2022-10-28 | 浙江理工大学 | Phenol extraction device capable of operating for long time |
| CN115245789B (en) * | 2021-12-17 | 2024-03-12 | 浙江理工大学 | Phenol extraction device capable of long-term operation |
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Open date: 20080116 |