CN117582773A - Auxiliary device is used in dimethyl carbonate production - Google Patents
Auxiliary device is used in dimethyl carbonate production Download PDFInfo
- Publication number
- CN117582773A CN117582773A CN202311690667.4A CN202311690667A CN117582773A CN 117582773 A CN117582773 A CN 117582773A CN 202311690667 A CN202311690667 A CN 202311690667A CN 117582773 A CN117582773 A CN 117582773A
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- Prior art keywords
- dimethyl carbonate
- auxiliary device
- liquid storage
- pipe
- sealing
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- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 91
- 238000011084 recovery Methods 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 239000002912 waste gas Substances 0.000 claims abstract description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000001569 carbon dioxide Substances 0.000 claims description 22
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 22
- 238000005192 partition Methods 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 238000000926 separation method Methods 0.000 abstract description 20
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 30
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 28
- 239000007789 gas Substances 0.000 description 18
- 208000028659 discharge Diseases 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000011550 stock solution Substances 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 238000005809 transesterification reaction Methods 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- CXHHBNMLPJOKQD-UHFFFAOYSA-M methyl carbonate Chemical compound COC([O-])=O CXHHBNMLPJOKQD-UHFFFAOYSA-M 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/12—Auxiliary equipment particularly adapted for use with liquid-separating apparatus, e.g. control circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses an auxiliary device for producing dimethyl carbonate, which relates to the field of dimethyl carbonate production equipment and comprises a storage tank, a recovery tank and a separation device, wherein the storage tank is used for storing waste gas, the storage tank is connected to the recovery tank through a pipeline, a cooling bin and a recovery pipe are arranged in the recovery tank, a condensation pipe is arranged in the cooling bin, the bottom of the condensation pipe is connected to a separation plate, the separation device is arranged below the separation plate, a liquid storage disc, a ball head collecting structure and a sealing separation plate are arranged in the separation device, the outer ring of the liquid storage disc slides and is in sealing contact with the side wall of the recovery tank, the ball head collecting structure is arranged at the center of the liquid storage disc and the bottom of the ball head collecting structure is fixedly connected to the sealing separation plate, and the separation plate, the liquid storage disc and the sealing separation plate divide the whole recovery tank into a cooling area, a storage area, a layered liquid area and a supporting area.
Description
Technical Field
The invention relates to the field of dimethyl carbonate production equipment, in particular to an auxiliary device for producing dimethyl carbonate.
Background
Dimethyl carbonate (DMC) is an important organic synthesis intermediate, and various synthesis methods are available, wherein the transesterification method using carbon dioxide, methanol and ethylene oxide as raw materials is a synthesis method with higher investment value because of good economic benefit and small investment of the raw materials.
In the process of producing dimethyl carbonate by transesterification, substances such as ethylene glycol and dimethyl carbonate exist in the product, so that the produced waste gas contains substances such as carbon dioxide, water vapor, gaseous methanol and ethylene glycol, and the waste gas is discharged after additional gas-liquid separation and other treatments, and the substances such as methanol, dimethyl carbonate and ethylene glycol in the waste gas are recovered, especially the carbon dioxide serving as raw materials, the ethylene glycol and the dimethyl carbonate serving as the products need to be recovered, so that the cost is effectively reduced, but the recovered methanol, ethylene glycol and dimethyl carbonate are separated from water due to the fact that the dimethyl carbonate is insoluble in water and the methanol and ethylene glycol are soluble in water, and the situation that the water-dimethyl carbonate-water-dimethyl carbonate is separated into multiple layers in the same tank body due to the rough waste treatment process often occurs, but not all the water is in the upper layer, so that the recovery of all the dimethyl carbonate is very inconvenient.
Disclosure of Invention
The invention aims to provide an auxiliary device for producing dimethyl carbonate, which solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an auxiliary device is used in dimethyl carbonate production, includes holding vessel, recovery jar and separator, the holding vessel is used for storing waste gas, the holding vessel passes through the pipe connection on the recovery jar, be equipped with cooling bin and recovery pipe in the recovery jar, be equipped with the condenser pipe in the cooling bin, the bottom of condenser pipe is connected on the division board, separator's installation is in the below of division board, be equipped with stock solution dish, bulb collection structure and sealing baffle in the separator, the outer lane of stock solution dish slides and sealing contact with the lateral wall of recovery jar, bulb collection structure installs the centre of a circle position of stock solution dish and bottom fixed connection on sealing baffle, division board, stock solution dish and sealing baffle separate whole recovery jar into cooling zone, storage area, layering liquid zone and holding zone, waste gas accomplishes gas-liquid separation and carbon dioxide among them and temporarily stores in the storage zone after the cooling of cooling zone, waits to retrieve.
Preferably, a low-temperature environment can be formed in the cooling bin, and the condensing pipe is of a spiral structure.
Preferably, the recovery pipe is provided with a pressure valve.
Preferably, a sealing ring is arranged on the outer ring of the liquid storage disc, and the bottom surface structure of the liquid storage disc is an inclined surface structure gradually inclining downwards from the outer ring to the inner ring.
Preferably, a plurality of nitrogen springs are symmetrically arranged between the liquid storage disc and the sealing partition plate, the sealing partition plate is fixedly arranged on the recovery tank, a plurality of pull rods are arranged on the sealing partition plate, the pull rods penetrate through the liquid storage disc and the bottom of the pull rods is fixed on the sealing partition plate, and a check ring arranged at the head of each pull rod is located above the liquid storage disc.
Preferably, a liquid discharge pipeline is arranged in the pull rod, the highest position of the liquid discharge pipeline is positioned on the lower surface of the head part of the pull rod, and the lowest position of the liquid discharge pipeline is positioned on the upper surface of the sealing partition plate.
Preferably, the magnetic ball head collecting structure comprises a water absorbing cover, a ball head, a communicating pipe, a piston and a bracket, wherein the water absorbing cover is wrapped on the ball head, the bottom of the ball head is connected on the communicating pipe, the bottom of the communicating pipe is fixedly connected on the sealing partition plate, the piston is movably connected in the communicating pipe and can freely slide in the communicating pipe, one end of the bracket is connected on a piston rod of the piston, and the other end of the bracket is connected at the bottom of the liquid storage disc.
Preferably, the ball head is of a hollow structure, and a plurality of through holes are formed in the ball head.
Preferably, a groove is arranged on the inner wall of the communicating pipe, and the lowest part of the groove is positioned below the piston sheet when the piston moves to the highest part.
Preferably, the storage area is communicated with the supporting area through a pipeline.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention aims at the waste gas generated in the production process of the dimethyl carbonate, and the gas-liquid separation is completed through the arranged condensing tube, so that the methanol, the glycol and the dimethyl carbonate steam or atomized particles mixed in the carbon dioxide gas can be removed, and the independent recovery of the carbon dioxide is realized;
2. the separating device provided by the invention can separate the water, glycol, methanol and water-insoluble dimethyl carbonate which are mixed together, so that the subsequent separation and recovery are facilitated;
3. the liquid storage disc is matched with the ball head collecting structure, so that the integral layering between water and dimethyl carbonate can be realized, and the phenomenon of multilayer layering in the prior art is eliminated.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of the structure at B in FIG. 3;
fig. 5 is an assembly view of the structure of the separating apparatus.
In the figure: 1-a storage tank;
2-a recovery tank; 21-cooling bin; 22-a recovery tube; 221-a pressure valve; 23-condensing tubes;
3-separation means; 31-a liquid storage disc; 32-a ball head collection structure; 321-a water absorbing cover; 322-ball head; 323-communicating tube; 324-a piston; 325-rack; 326-groove; 33-sealing separator; 34-nitrogen spring; 35-a pull rod; 351-a drainage pipeline;
4-sealing a separator; a 5-cooling zone; a 6-storage area; 7-layering a liquid zone; 8-support region.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides an auxiliary device is used in dimethyl carbonate production, includes holding vessel 1, recovery jar 2 and separator 3, holding vessel 1 is used for storing waste gas, holding vessel 1 passes through the pipe connection on recovery jar 2, be equipped with cooling storehouse 21 and recovery pipe 22 in the recovery jar 2, be equipped with condenser pipe 23 in the cooling storehouse 21, the bottom of condenser pipe 23 is connected on division board 4, the below at division board 4 is installed to separator 3, be equipped with reservoir dish 31, bulb collection structure 32 and sealing baffle 33 in separator 3, the outer lane of reservoir dish 31 and the lateral wall sliding and sealing contact of recovery jar 2, bulb collection structure 32 is installed in the centre of a circle position of reservoir dish 31 and bottom fixed connection is on sealing baffle 33, division board 4, reservoir dish 31 and sealing baffle 4 separate whole recovery jar 2 into cooling zone 5, storage zone 6, layering liquid zone 7 and supporting zone 8, abandon and accomplish gas-liquid separation and carbon dioxide temporary storage zone 6 wherein after the cooling through cooling zone 5, wait for setting up, can retrieve methyl carbonate, methyl glycol, the mixed gas or the mist of carbon dioxide, the mist can be retrieved in the steam through setting up condensation pipe 23.
In this embodiment, a low-temperature environment can be formed in the cooling bin 21, and the condensation pipe 23 has a spiral structure, so that the residence time of the exhaust gas in the cooling bin 21 and the condensation pipe 23 can be prolonged by the spiral structure, and the exhaust gas is fully cooled.
In this embodiment, the recovery pipe 22 is provided with a pressure valve 221, the top of the recovery pipe 22 extends out of the recovery tank 2 and is externally connected to an external storage device, and when the pressure of the carbon dioxide gas in the storage area 6 reaches a set value, the pressure valve 221 is opened to uniformly discharge the gas, and the gas is recovered and stored by the external storage device.
In this embodiment, the sealing ring 311 is disposed on the outer ring of the liquid storage disc 31, and the bottom surface of the liquid storage disc 31 is a slope structure that gradually slopes downward from the outer ring to the inner ring, and the slope structure can collect the condensed liquid substances at the central position of the liquid storage disc 31 as much as possible.
In this embodiment, a plurality of nitrogen springs 34 are symmetrically arranged between the liquid storage disc 31 and the sealing partition 33, the sealing partition 33 is fixedly installed on the recovery tank 2, a plurality of pull rods 35 are arranged on the sealing partition 33, the pull rods 35 penetrate through the liquid storage disc 31 and the bottoms of the pull rods 35 are fixed on the sealing partition 33, a retainer ring arranged at the head of each pull rod 35 is located above the liquid storage disc 31, the nitrogen springs 34 are filled with nitrogen of a required pressure value x, when the pressure generated by carbon dioxide gas in the storage area 6 exceeds x, the liquid storage disc 31 is pressed downwards, the carbon dioxide gas is discharged outwards through the recovery pipe 22 until the pressure reaches the set value of the pressure valve 221, and the liquid storage disc 31 is sprung up again under the action of the nitrogen springs 34 and returns to the original position under the limiting action of the pull rods 35.
In this embodiment, a drain pipe 351 is disposed in the pull rod 35, the highest position of the drain pipe 351 is located on the lower surface of the head of the pull rod, the lowest position of the drain pipe 351 is located on the upper surface of the sealing partition 33, when layered water and dimethyl carbonate liquid exist on the liquid storage disc 31 in the drain pipe 351, the dimethyl carbonate located on the lower layer can flow into the layered liquid area 7 through the drain pipe 351, meanwhile, because the position of the drain pipe 351 is higher than the lowest position of the liquid storage disc 31, all the dimethyl carbonate can not be completely drained, part of the dimethyl carbonate can be reserved on the liquid storage disc 31, and all the drain can be avoided, so that the water condensed next time occupies the lower layer of the inner space of the liquid storage disc 31, and the water and the dimethyl carbonate can not be properly layered.
In this embodiment, the magnetic ball head collecting structure 32 includes a water absorbing cap 321, a ball head 322, a communicating tube 323, a piston 324 and a support 325, the water absorbing cap 321 is wrapped on the ball head 322, the bottom of the ball head 322 is connected to the communicating tube 323, the bottom of the communicating tube 323 is fixedly connected to the sealing partition 33, the piston 324 is movably connected to the communicating tube 323 and can slide freely in the communicating tube 323, one end of the support 325 is connected to a piston rod of the piston 324, the ball head 322 is of a hollow structure, the ball head 322 is provided with a plurality of through holes, the other end is connected to the bottom of the liquid storage disc 31, since the bottom of the communicating tube 323 is fixed to the sealing partition 33, the position of the ball head 322 is fixed, when the liquid storage disc 31 moves downwards, the piston 324 is pulled by the support 325, so that the ball head 322 generates suction force, water in the water absorbing cap 321 is sucked into the communicating tube 323, when the liquid storage disc 31 is reset, the position of the head 322 and the position of the ball head 322 need only be set, the position of the head 35 is required, the position of the liquid storage disc 322 is required, the position of the head 322 is required to be set, the position of the liquid storage disc 31 is required to be lower than the lowest in the two-level of the liquid absorption layer of the liquid absorption medium, and the two-phase absorption medium can be calculated, and the two-level of the two-level carbonate can absorb the two-level substances at the lowest in the top surface of the liquid medium can be calculated at the same time, and the two-level at the lowest level of the two-level of the surface of the bottom surface of the liquid absorption layer 31 is required to absorb two.
In this embodiment, the inner wall of the communicating pipe 323 is provided with a groove 326, the lowest position of the groove 326 is located below the piston plate when the piston 324 moves to the highest position, when the piston plate of the piston 324 moves to the highest position higher than the groove 326, the water in the communicating pipe 323 will be discharged into the layered liquid zone 6 through the groove 326, and the bottom outlet of the communicating pipe 323 is higher than the lowest position of the liquid discharge pipe 351, so the discharged water will still be above the dimethyl carbonate, and the layered state in the layered liquid zone 7 will not be damaged.
In this embodiment, the storage area 6 is communicated with the supporting area 8 through a pipeline, and the cooled low-temperature carbon dioxide in the storage area 6 can enter the supporting area 8 through the pipeline, so that the temperature of the liquid in the layered liquid area 7 above the supporting area 8 is prevented from rising and vaporizing due to the influence of equipment operation, leakage during waste gas treatment or external temperature through the cooling effect of the low-temperature carbon dioxide.
Working principle: the auxiliary device can complete preliminary treatment of waste gas, complete gas-liquid separation and general separation of different substances in liquid substances, and the process is divided into two parts: firstly, in the liquefaction and layering stage, waste gas enters a condensing pipe 23 from a storage tank 1 through a pipeline, methanol, glycol and dimethyl carbonate vapor or atomized particles mixed in carbon dioxide gas are liquefied in a low-temperature environment of a cooling bin 21 and enter a storage area 6 through the condensing pipe 23, liquid substances in the liquefied and layered liquid can fall on a liquid storage disc 31, meanwhile, layering can be completed quickly after the liquefied and atomized particles fall on the liquid storage disc 31 due to small quantity, then the generated pressure is gradually larger than the pressure value x of a nitrogen spring 34 along with the increase of the carbon dioxide gas in the storage area 6, the liquid storage disc 31 is gradually lowered, the liquid in the liquid storage disc 31 can be prevented from touching a water absorbing cover 321, the top opening of a liquid discharging pipeline 351 can be also enabled to leave the liquid storage disc 31, the liquid is prevented from being discharged out of the liquid storage disc 31 in advance, and then, when the set pressure value of a pressure valve 221 is reached along with the gradual increase of the pressure, the valve is opened, the carbon dioxide gas in the storage area 6 is discharged through the recovery pipe 22, the top of the recovery pipe 22 extends out of the recovery tank 2 and is externally connected to an external storage device, when the pressure of the carbon dioxide gas in the storage area 6 reaches a set value, the pressure valve 221 is opened to uniformly discharge the gas, the gas is recovered and stored by the external storage device and then enters a liquid discharge stage, the liquid storage disc 31 gradually rises along with the pressure reduction until reaching the limit position of the pull rod 35, at the moment, the dimethyl carbonate at the lower layer can flow into the layered liquid area 7 through the liquid discharge pipeline 351, the water at the upper layer can be absorbed and stored by the water absorbing cover 321, then the liquefaction and the layered stage are repeated after the gas discharge is finished, the liquid storage disc 31 falls, the piston 324 is pulled by the bracket 325 to form negative pressure in the communicating pipe 322, thus the ball head 322 can generate negative pressure, the water in the water suction cover 321 is sucked into the connecting pipe 323, and along with the reset of the liquid storage disc 31, when the piston piece of the piston 324 moves to the highest position higher than the groove 326, the water in the connecting pipe 323 is discharged into the layering liquid area 7 through the groove 326, as the dimethyl carbonate enters the layering liquid area 7 in the ascending stage of the liquid storage disc 31, the water enters the layering liquid area 7 in the descending stage of the liquid storage disc 31, and the dimethyl carbonate directly flows to the bottom of the layering liquid area 7 through the liquid discharge pipeline 351, the dimethyl carbonate is kept in a state always below the water in the continuous liquid discharge process, the multi-layer layering phenomenon caused by the fact that the dimethyl carbonate is not mutually dissolved is avoided, the separation and the recovery of the dimethyl carbonate are facilitated, and the two stages are repeated, so that the waste gas can be assisted to finish the primary recovery of gas and liquid.
Based on the above, the invention aims at the waste gas generated in the production process of the dimethyl carbonate, and the gas-liquid separation is completed through the arranged condensing tube, so that the methanol, the glycol and the dimethyl carbonate steam or the atomized particles mixed in the carbon dioxide gas can be removed, and the independent recovery of the carbon dioxide is realized; the separating device provided by the invention can separate the water, glycol, methanol and water-insoluble dimethyl carbonate which are mixed together, so that the subsequent separation and recovery are facilitated; the liquid storage disc is matched with the ball head collecting structure, so that the integral layering between water and dimethyl carbonate can be realized, and the phenomenon of multilayer layering in the prior art is eliminated.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Claims (10)
1. An auxiliary device is used in dimethyl carbonate production, its characterized in that: including holding vessel (1), recovery tank (2) and separator (3), holding vessel (1) is used for storing waste gas, holding vessel (1) is through pipe connection on holding vessel (2), be equipped with cooling storehouse (21) and recovery pipe (22) in holding vessel (2), be equipped with condenser pipe (23) in cooling storehouse (21), the bottom of condenser pipe (23) is connected on division board (4), the below at division board (4) is installed to separator (3), be equipped with reservoir dish (31), bulb collection structure (32) and sealing baffle (33) in separator (3), the outer lane of reservoir dish (31) slides and sealing contact with the lateral wall of holding vessel (2), the centre of a circle position and bottom fixed connection of reservoir dish (31) are on sealing baffle (33), division board (4), reservoir dish (31) and sealing baffle (4) separate whole reservoir dish (2) into cooling zone (5), storage zone (6), storage layer (7) and carbon dioxide (8) through the temporary recovery of carbon dioxide in the storage zone (5) after the temporary storage zone is accomplished to the carbon dioxide.
2. An auxiliary device for producing dimethyl carbonate according to claim 1, wherein: the cooling bin (21) can form a low-temperature environment, and the condensing pipe (23) is of a spiral structure.
3. An auxiliary device for producing dimethyl carbonate according to claim 1, wherein: the recovery pipe (22) is provided with a pressure valve (221).
4. An auxiliary device for producing dimethyl carbonate according to claim 1, wherein: the outer ring of the liquid storage disc (31) is provided with a sealing ring (311), and the bottom surface structure of the liquid storage disc (31) is an inclined surface structure which gradually inclines downwards from the outer ring to the inner ring.
5. An auxiliary device for producing dimethyl carbonate according to claim 1, wherein: a plurality of nitrogen springs (34) which are symmetrically arranged are arranged between the liquid storage disc (31) and the sealing partition plate (33), the sealing partition plate (33) is fixedly arranged on the recovery tank (2), a plurality of pull rods (35) are arranged on the sealing partition plate (33), the pull rods (35) penetrate through the liquid storage disc (31) and the bottom of the pull rods is fixed on the sealing partition plate (33), and check rings arranged at the heads of the pull rods (35) are located above the liquid storage disc (31).
6. An auxiliary device for producing dimethyl carbonate according to claim 1, wherein: a liquid discharge pipeline (351) is arranged in the pull rod (35), the highest position of the liquid discharge pipeline (351) is positioned on the lower surface of the head of the pull rod, and the lowest position of the liquid discharge pipeline (351) is positioned on the upper surface of the sealing partition plate (33).
7. An auxiliary device for producing dimethyl carbonate according to claim 1, wherein: the magnetic ball head collecting structure (32) comprises a water absorbing cover (321), a ball head (322), a communicating pipe (323), a piston (324) and a bracket (325), wherein the water absorbing cover (321) is wrapped on the ball head (322), the bottom of the ball head (322) is connected to the communicating pipe (323), the bottom of the communicating pipe (323) is fixedly connected to a sealing partition plate (33), the piston (324) is movably connected to the communicating pipe (323) and can freely slide in the communicating pipe (323), one end of the bracket (325) is connected to a piston rod of the piston (324), and the other end of the bracket is connected to the bottom of a liquid storage disc (31).
8. An auxiliary device for producing dimethyl carbonate according to claim 7, wherein: the ball head (322) is of a hollow structure, and a plurality of through holes are formed in the ball head (322).
9. An auxiliary device for producing dimethyl carbonate according to claim 7, wherein: the inner wall of the communicating pipe (323) is provided with a groove (326), and the lowest part of the groove (326) is positioned below the piston sheet when the piston (324) moves to the highest part.
10. An auxiliary device for producing dimethyl carbonate according to claim 1, wherein: the storage area (6) is communicated with the supporting area (8) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311690667.4A CN117582773B (en) | 2023-12-11 | 2023-12-11 | Auxiliary device is used in dimethyl carbonate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311690667.4A CN117582773B (en) | 2023-12-11 | 2023-12-11 | Auxiliary device is used in dimethyl carbonate production |
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| CN117582773A true CN117582773A (en) | 2024-02-23 |
| CN117582773B CN117582773B (en) | 2024-07-02 |
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| CN202311690667.4A Active CN117582773B (en) | 2023-12-11 | 2023-12-11 | Auxiliary device is used in dimethyl carbonate production |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120024802A (en) * | 2009-07-28 | 2012-03-14 | 에이신 테크노 가부시키가이샤 | Floating oil recovery apparatus comprising liquid surface following-type suction apparatus |
| CN205386349U (en) * | 2016-02-01 | 2016-07-20 | 绍兴县江华化工有限公司 | Jar is retrieved to bromoethane |
| CN107626117A (en) * | 2017-11-10 | 2018-01-26 | 大丰鑫源达化工有限公司 | A kind of organic solvent recovery device |
| CN207085890U (en) * | 2017-06-23 | 2018-03-13 | 泉州市思康新材料发展有限公司 | It is a kind of that there is the reaction kettle of the esterification for dividing water function |
| CN210278345U (en) * | 2019-06-04 | 2020-04-10 | 常州常京化学有限公司 | Oil-water separation device is used in phenolic resin production |
| CN210570108U (en) * | 2019-09-17 | 2020-05-19 | 烟台市万船口海洋生物科技有限公司 | Heat converter for recycling waste heat |
| CN217996826U (en) * | 2022-06-01 | 2022-12-09 | 宁夏朗利新材料股份有限公司 | Secondary treatment equipment for separation of washing mother liquor of black sulfide wastewater |
| CN218025630U (en) * | 2022-07-01 | 2022-12-13 | 武汉船舶职业技术学院 | Oil-water separator capable of selecting separating surface |
| CN219185902U (en) * | 2022-12-05 | 2023-06-16 | 威海职业学院(威海市技术学院) | Improve oil-water separator of aromatic plant essential oil yield |
| US20230338873A1 (en) * | 2022-04-23 | 2023-10-26 | Hamari Chemicals, Ltd. | Continuous liquid separating apparatus and continuous liquid separating method |
-
2023
- 2023-12-11 CN CN202311690667.4A patent/CN117582773B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120024802A (en) * | 2009-07-28 | 2012-03-14 | 에이신 테크노 가부시키가이샤 | Floating oil recovery apparatus comprising liquid surface following-type suction apparatus |
| CN205386349U (en) * | 2016-02-01 | 2016-07-20 | 绍兴县江华化工有限公司 | Jar is retrieved to bromoethane |
| CN207085890U (en) * | 2017-06-23 | 2018-03-13 | 泉州市思康新材料发展有限公司 | It is a kind of that there is the reaction kettle of the esterification for dividing water function |
| CN107626117A (en) * | 2017-11-10 | 2018-01-26 | 大丰鑫源达化工有限公司 | A kind of organic solvent recovery device |
| CN210278345U (en) * | 2019-06-04 | 2020-04-10 | 常州常京化学有限公司 | Oil-water separation device is used in phenolic resin production |
| CN210570108U (en) * | 2019-09-17 | 2020-05-19 | 烟台市万船口海洋生物科技有限公司 | Heat converter for recycling waste heat |
| US20230338873A1 (en) * | 2022-04-23 | 2023-10-26 | Hamari Chemicals, Ltd. | Continuous liquid separating apparatus and continuous liquid separating method |
| CN217996826U (en) * | 2022-06-01 | 2022-12-09 | 宁夏朗利新材料股份有限公司 | Secondary treatment equipment for separation of washing mother liquor of black sulfide wastewater |
| CN218025630U (en) * | 2022-07-01 | 2022-12-13 | 武汉船舶职业技术学院 | Oil-water separator capable of selecting separating surface |
| CN219185902U (en) * | 2022-12-05 | 2023-06-16 | 威海职业学院(威海市技术学院) | Improve oil-water separator of aromatic plant essential oil yield |
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