CN218248584U - Ethylene carbonate device vacuum unit equipment - Google Patents
Ethylene carbonate device vacuum unit equipment Download PDFInfo
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- CN218248584U CN218248584U CN202222708898.0U CN202222708898U CN218248584U CN 218248584 U CN218248584 U CN 218248584U CN 202222708898 U CN202222708898 U CN 202222708898U CN 218248584 U CN218248584 U CN 218248584U
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- vacuum
- pipeline
- buffer tank
- pump
- screw
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- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000010992 reflux Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 claims description 17
- 239000000542 fatty acid esters of ascorbic acid Substances 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 239000010865 sewage Substances 0.000 abstract description 5
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 239000012535 impurity Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- -1 ethylene carbonate ester Chemical class 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002148 esters Chemical group 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
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Abstract
The utility model relates to a carbonic ethylene ester device vacuum unit equipment. The technical scheme is as follows: the top of the rectifying tower of the ethylene carbonate device is provided with a light component outlet, the light component outlet is connected to the inlet of a condenser through a pipeline, the outlet of the condenser is connected to a reflux tank through a pipeline, the upper end of the reflux tank is connected to a vacuum buffer tank through a pipeline, the upper end of the vacuum buffer tank is connected with a multi-stage vacuum Roots pump through a vacuumizing pipeline, a gas buffer tank is arranged on a vacuumizing pipeline between the vacuum buffer tank and the multi-stage vacuum Roots pump, and the outer end of the multi-stage vacuum Roots pump is connected with a dry-type screw pump. The beneficial effects are that: the utility model discloses an aspect has eliminated the unusual influence that causes of vacuum unit of device, and vacuum system stability obtains promoting, and the device product quality is undulant to be reduced, and on the other hand directly retrieves the rectifying column with the carbonic ethylene ester of light component through the gas vent of dry-type screw pump, avoids forming sewage, has also reduced the loss of carbonic ethylene ester.
Description
Technical Field
The utility model relates to a rectification vacuum system of carbonic ethylene ester device, in particular to carbonic ethylene ester device vacuum unit equipment.
Background
Ethylene carbonate is used as a chemical production intermediate with wide application, is a colorless and odorless flammable liquid, and has a boiling point (101.3 KPa) of 248 ℃. The method can be used for producing low-toxicity, environment-friendly and widely-used chemical raw material carbon vinyl ester by industrial ester exchange, and the method is prepared by adding carbon dioxide and ethylene oxide under certain pressure and then distilling the mixture under negative pressure in the existing chemical production. The vacuum device generally adopts a reciprocating vacuum pump, so that the energy consumption and the failure rate are high, the performance is continuously reduced along with the increase of the maintenance times, the operation failure rate is high even if a screw pump is used for improvement, the blocking phenomenon often occurs, and therefore, the research on improving the vacuum stability of the ethylene carbonate rectification system is needed.
The name of the company before the change of Shenghua new energy science and technology (Dongying) GmbH is Dongyngzhong Shi big industrial trade GmbH, and the Chinese patent number is applied in 2016: 2016213926154, entitled "vacuum system for producing ethylene carbonate", comprises a Roots pump set, which comprises multiple Roots pumps, wherein the pump end of the Roots pump set is communicated with a vacuum container to be vacuumized, and the water ring pump is connected with the output end of the Roots pump set; and a plurality of roots pumps of the roots pump set are vertically distributed from bottom to top in sequence. The device adopts three roots pumps, and the three roots pumps and the matched water ring pump are vertically arranged and distributed, so that the mechanical collision in the actual production is greatly reduced, and the service life of the device is prolonged. But it still has problems: the water ring pump mixes the extracted light component gas into water and discharges the light component gas into a sewage pool, further sewage treatment is needed, environmental pollution is avoided, and part of light component ethylene carbonate is wasted.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a carbonic ethylene ester device vacuum unit equipment to the above-mentioned defect that prior art exists, having eliminated the unusual influence that causes of vacuum unit of device on the one hand, on the other hand directly passes through the gas vent recovery rectifying column of dry-type screw pump with the carbonic ethylene ester of light component, avoids forming sewage, has also reduced the loss of carbonic ethylene ester.
The utility model provides a carbonic ethylene ester device vacuum unit equipment, its technical scheme is: the device comprises a ethylene carbonate device rectifying tower (T302), a condenser (E304), a reflux tank (V310), a vacuum buffer tank (V311), a gas buffer tank (V303), a dry screw pump (P305A 1), a reboiler (R1) and an ethylene carbonate storage tank (V305), wherein a crude ethylene carbonate product feeding port is arranged in the middle of the ethylene carbonate device rectifying tower (T302), a discharging port is arranged on a lateral line of the ethylene carbonate device rectifying tower (T302), the discharging port is connected to the ethylene carbonate storage tank (V305) through a pipeline, the reboiler (R1) is arranged at the bottom of the ethylene carbonate device rectifying tower (T302), a light component outlet is arranged at the top of the ethylene carbonate device rectifying tower (T302) and is connected to an inlet of the condenser (E304) through a pipeline, an outlet of the condenser (E304) is connected to the reflux tank (V310) through a pipeline, the upper end of the reflux tank (V310) is connected to the vacuum buffer tank (V311) through a pipeline, the upper end of the vacuum buffer tank (V311) is connected to a multi-stage vacuum pump through a vacuum pumping pipeline (a vacuum pipeline (A1) connected between the vacuum buffer tank (V311), and the vacuum buffer tank (P1) is connected to the vacuum pump (A1) of the Roots pump, and the vacuum buffer tank (A1).
Preferably, the vacuum line (a 1) is in an L-shaped structure, a chute (a 1.1) is arranged at the horizontal section, a filter screen (a 1.2) is arranged at the right end of the chute (a 1.1), and the lower end of the chute (a 1.1) is connected to the gas buffer tank (V303) through a branch line (a 2) and a second control valve (P2).
Preferably, the right end of the evacuation line (A1) is connected to a multistage vacuum roots pump through a first control valve (P1) and a pressure gauge (P101), and the lower end of the multistage vacuum roots pump is connected to a dry screw pump (P305 A1) through a thermometer (T1).
Preferably, the multistage vacuum roots pump includes a three-stage roots pump (P305 A4), a two-stage roots pump (P305 A3), and a one-stage roots pump (P305 A2) connected in sequence.
Preferably, the dry screw pump (P305 A1) includes an end cover (b 1), a driving wheel (b 2), a driven wheel (b 3), a water inlet (b 4), a main casing (b 5), a jacket (b 6), a small pitch rotor (b 7), cooling water (b 8), a large pitch rotor (b 9), a main connecting shaft (b 10), a driven connecting shaft (b 11) and a water outlet (b 12), wherein a main screw and a driven screw are installed in an inner cavity of the main casing (b 5), the main screw and the driven screw are respectively provided with a plurality of large pitch rotors (b 9) and a plurality of small pitch rotors (b 7), the right end of the main screw is provided with the main connecting shaft (b 10), the left end of the main screw is connected with the driving wheel (b 2), the right end of the driven screw is provided with the driven connecting shaft (b 11), and the left end of the driven wheel (b 3); the outer wall of the main shell (b 5) is provided with a jacket (b 6), the upper end of the jacket (b 6) is provided with a water inlet (b 4), and the lower end of the jacket is provided with a water outlet (b 12).
Preferably, the main casing (b 5) has an exhaust port (b 13) at a lower left portion and an intake port (b 14) at an upper right portion.
Preferably, the left end of the driving wheel (b 2) is connected with a motor.
The utility model has the advantages that: the utility model discloses a reform transform the ethylene carbonate device vacuum system, vacuum system stability obtains promoting, and device rectifying column vacuum system has obtained stable promotion after vacuum system is stable, and the fluctuation of device product quality reduces, in addition, the utility model discloses an aspect has eliminated the influence that the vacuum unit of device caused unusually, and on the other hand is direct to pass through the gas vent recovery rectifying column of dry-type screw pump with the ethylene carbonate ester of light component, avoids forming sewage, has also reduced the loss of ethylene carbonate ester.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged schematic view of the vacuum line at the junction with the branch line;
FIG. 3 is a schematic structural view of a main body portion of the dry screw pump;
in the upper diagram: the device comprises a rectification tower T302 of the ethylene carbonate device, a condenser E304, a reflux tank V310, a vacuum buffer tank V311, a gas buffer tank V303, a three-stage roots pump P305A4, a two-stage roots pump P305A3, a one-stage roots pump P305A2, a dry screw pump P305A1, a first control valve P1, a second control valve P2, a pressure gauge P101, a thermometer T101, a vacuum pumping pipeline A1, a branch pipeline A2, a chute a1.1, a filter screen a1.2, an end cover b1, a driving wheel b2, a driven wheel b3, a water inlet b4, a main shell b5, a jacket b6, a small-pitch rotor b7, cooling water b8, a large-pitch rotor b9, a main connecting shaft b10, a connecting shaft b11, a water outlet b12, an exhaust port b13 and an air inlet b14.
Detailed Description
The preferred embodiments of the present invention will be described hereinafter with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are merely for purposes of illustration and explanation, and are not intended to limit the present invention.
Referring to fig. 2, the utility model discloses an evacuation pipeline A1 is L shape structure, is equipped with chute a1.1 at the horizontal segment, has installed filter screen a1.2 at chute a 1.1's right-hand member, chute a 1.1's lower extreme is connected to gaseous buffer tank V303 through bleeder line a2 and second control valve P2, and like this, when evacuation pipeline A1 the inside contains partial steam, impurity, can be when through chute a1.1, liquid can be along flowing to gaseous buffer tank V303, and impurity can keep off in one side of filter screen a1.2, avoids entering into subsequent dry screw pump P305A1.
The right end of the evacuation line A1 is connected to a multistage vacuum roots pump via a first control valve P1 and a pressure gauge P101, and the lower end of the multistage vacuum roots pump is connected to a dry screw pump P305A1 via a thermometer T1, whereby pressure data and temperature data can be obtained.
Preferably, the multistage vacuum roots pump includes a three-stage roots pump P305A4, a two-stage roots pump P305A3, and a one-stage roots pump P305A2 connected in sequence.
Referring to fig. 3, the dry screw pump P305A1 of the present invention includes an end cap b1, a driving wheel b2, a driven wheel b3, a water inlet b4, a main casing b5, a jacket b6, a small pitch rotor b7, cooling water b8, a large pitch rotor b9, a main connecting shaft b10, a driven connecting shaft b11, and a water outlet b12, wherein a main screw and a driven screw are installed in an inner cavity of the main casing b5, and the main screw and the driven screw are respectively provided with a plurality of large pitch rotors b9 and a plurality of small pitch rotors b7, the right end of the main screw is provided with the main connecting shaft b10, the left end of the main screw is connected with the driving wheel b2, the right end of the driven screw is provided with the driven connecting shaft b11, and the left end of the driven screw is connected with the driven wheel b3; the outer wall of the main shell b5 is provided with a jacket b6, the upper end of the jacket b6 is provided with a water inlet b4, and the lower end of the jacket b6 is provided with a water outlet b12.
An exhaust port b13 is provided at the lower left side of the main casing b5, and an intake port b14 is provided at the upper right side thereof.
In addition, the motor is connected to the left end of the driving wheel b2, the driving wheel b2 is driven to rotate through the motor, the driven wheel b3 is driven to rotate, the driving screw rod and the driven screw rod are driven to rotate, and then the vacuumizing operation is achieved under the rotating fit of the large-pitch rotor b9 and the small-pitch rotor b 7.
The utility model discloses during the use, ethylene carbonate device rectifying column T302 carries out the evacuation operation through vacuum system, ethylene carbonate device rectifying column T302 tower interior gaseous phase is through tower cauldron to the top of the tower gas phase line, through condenser E304, the condensate gets into backward flow jar V310 after the condensation, ethylene carbonate gaseous phase is through communicating pipeline to vacuum buffer tank V311, later through the evacuation pipeline, and get into tertiary lobe pump P305A4 after gaseous buffer tank V303 in proper order, second grade lobe pump P305A3, one-level lobe pump P305A2, dry-type screw pump P305A1. An operator monitors the running condition of the vacuum unit equipment in time by monitoring the pressure at the inlet of the roots pump and the temperature change at the outlet and the inlet of the dry-type screw pump. In addition, the temperature of the dry-type screw pump is reduced by introducing cooling water into the dry-type screw pump, so that the long-period stable operation of the vacuum unit is achieved, and the stability of a vacuum system of the rectification system is stabilized, so that the stability and the improvement of the quality of the ethylene carbonate product of the device are guaranteed.
The difference from the embodiment 1 is that:
the gas buffer tank V303 is provided with an air inlet and an air outlet at the top, the vacuumizing pipeline a1 can be directly connected to the air inlet of the gas buffer tank V303, and a filler can be arranged in the gas buffer tank V303, so that the air outlet is connected to a subsequent multistage vacuum roots pump and a dry screw pump, and thus, liquid contained in the vacuumizing process can be better remained in the gas buffer tank V303, and the design purpose of the utility model is achieved; impurities can be completed by arranging the filter screen at the air outlet, so that the impurities are prevented from entering the subsequent flow.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent changes made according to the technical solution of the present invention belong to the scope of the present invention as far as possible.
Claims (7)
1. A kind of carbonic ethylene ester device vacuum unit apparatus, its characteristic is: the device comprises a vinylene carbonate device rectifying tower (T302), a condenser (E304), a reflux tank (V310), a vacuum buffer tank (V311), a gas buffer tank (V303), a dry screw pump (P305A 1), a reboiler (R1) and a vinylene carbonate storage tank (V305), wherein a crude vinylene carbonate feed inlet is arranged in the middle of the vinylene carbonate device rectifying tower (T302), a discharge outlet is arranged at the lateral line of the vinylene carbonate device rectifying tower (T302), the discharge outlet is connected to the vinylene carbonate storage tank (V305) through a pipeline, the reboiler (R1) is arranged at the bottom of the vinylene carbonate device rectifying tower (T302), a light component outlet is arranged at the top of the vinylene carbonate device rectifying tower (T302) and is connected to the inlet of the condenser (E304) through a pipeline, the outlet of the condenser (E304) is connected to the reflux tank (V310) through a pipeline, the upper end of the reflux tank (V310) is connected to the vacuum buffer tank (V311) through a pipeline, a multistage vacuum pump is connected to the upper end of the vacuum buffer tank (V311) through a vacuumizing pipeline (a vacuum pipeline (A1), and a Roots pump (P1) is arranged between the vacuum buffer tank (V311), and the vacuum buffer tank (V1) and the vacuum pump (A1) is connected to the vacuum buffer tank (V311).
2. The ethylene carbonate device vacuum unit equipment as claimed in claim 1, characterized in that: the vacuum pumping pipeline (a 1) is of an L-shaped structure, a chute (a 1.1) is arranged at the horizontal section, a filter screen (a 1.2) is arranged at the right end of the chute (a 1.1), and the lower end of the chute (a 1.1) is connected to a gas buffer tank (V303) through a branch pipeline (a 2) and a second control valve (P2).
3. The ethylene carbonate plant vacuum unit equipment according to claim 1 or 2, characterized in that: the right end of the vacuum pumping pipeline (A1) is connected to the multistage vacuum roots pump through a first control valve (P1) and a pressure gauge (P101), and the lower end of the multistage vacuum roots pump is connected to the dry-type screw pump (P305A 1) through a thermometer (T1).
4. The ethylene carbonate device vacuum unit equipment as claimed in claim 3, characterized in that: the multistage vacuum roots pump comprises a three-stage roots pump (P305A 4), a two-stage roots pump (P305A 3) and a one-stage roots pump (P305A 2) which are sequentially connected.
5. The ethylene carbonate plant vacuum unit equipment according to claim 2 or 3, characterized in that: the dry-type screw pump (P305A 1) comprises an end cover (b 1), a driving wheel (b 2), a driven wheel (b 3), a water inlet (b 4), a main shell (b 5), a jacket (b 6), a small-pitch rotor (b 7), cooling water (b 8), a large-pitch rotor (b 9), a main connecting shaft (b 10), a driven connecting shaft (b 11) and a water outlet (b 12), wherein a main screw and a driven screw are installed in an inner cavity of the main shell (b 5), the main screw and the driven screw are respectively provided with the large-pitch rotors (b 9) and the small-pitch rotors (b 7), the right end of the main screw is provided with the main connecting shaft (b 10), the left end of the main screw is connected with the driving wheel (b 2), the right end of the driven screw is provided with the driven connecting shaft (b 11), and the left end of the driven wheel (b 3) is connected with the driven screw; the outer wall of the main shell body (b 5) is provided with a jacket (b 6), the upper end of the jacket (b 6) is provided with a water inlet (b 4), and the lower end of the jacket (b 6) is provided with a water outlet (b 12).
6. The ethylene carbonate plant vacuum unit equipment as set forth in claim 5, characterized in that: the lower part of the left side of the main shell (b 5) is provided with an exhaust port (b 13), and the upper part of the right side is provided with an air inlet (b 14).
7. The ethylene carbonate plant vacuum unit equipment as set forth in claim 6, characterized in that: the left end of the driving wheel (b 2) is connected with a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222708898.0U CN218248584U (en) | 2022-10-14 | 2022-10-14 | Ethylene carbonate device vacuum unit equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222708898.0U CN218248584U (en) | 2022-10-14 | 2022-10-14 | Ethylene carbonate device vacuum unit equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218248584U true CN218248584U (en) | 2023-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222708898.0U Active CN218248584U (en) | 2022-10-14 | 2022-10-14 | Ethylene carbonate device vacuum unit equipment |
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|---|---|
| CN (1) | CN218248584U (en) |
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2022
- 2022-10-14 CN CN202222708898.0U patent/CN218248584U/en active Active
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Address after: 198 Tongxing Road, Kenli District, Dongying City, Shandong Province Patentee after: Shenghua new energy technology (Dongying) Co.,Ltd. Country or region after: China Patentee after: Shi Dashenghua New Materials Group Co.,Ltd. Address before: 198 Tongxing Road, Kenli District, Dongying City, Shandong Province Patentee before: Shenghua new energy technology (Dongying) Co.,Ltd. Country or region before: China Patentee before: Shenghua New Material Group Co.,Ltd. |