CN204783661U - Tertiary roots's pendular ring vacuum unit - Google Patents
Tertiary roots's pendular ring vacuum unit Download PDFInfo
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- CN204783661U CN204783661U CN201520504650.XU CN201520504650U CN204783661U CN 204783661 U CN204783661 U CN 204783661U CN 201520504650 U CN201520504650 U CN 201520504650U CN 204783661 U CN204783661 U CN 204783661U
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- roots
- ring vacuum
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- condensation tube
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- 238000009833 condensation Methods 0.000 claims abstract description 58
- 230000005494 condensation Effects 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 238000010992 reflux Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000009931 harmful effect Effects 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 25
- 239000006227 byproduct Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000006068 polycondensation reaction Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 150000003384 small molecules Chemical class 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model discloses a tertiary roots's pendular ring vacuum unit, including the one -level condensing equipment, second grade condensing equipment, tertiary condensing equipment, liquid ring vacuum pump, tail gas processing apparatus, the one -level condensing equipment, the second grade condensing equipment, tertiary condensing equipment, liquid ring vacuum pump and tail gas processing apparatus manage the series connection by fluid coupling in proper order, install automatic regulating valve between one -level condensing equipment and the tail gas processing apparatus. It to the harmful effects of roots vacuum pump itself and system's evacuation, makes the unit can produce stable vacuum effectively to have reduced the low or middle molecule accessory substance of technology steam and low -molecular -weight polymer through the cubic condensation. Meanwhile, automatic regulating valve adjusts tail gas vacuum, has reduced low reaches tail gas processing apparatus's load and energy consumption.
Description
Technical field
The utility model relates to a kind of Roots's liquid ring vacuum unit, and more particularly, it relates to a kind of three grades of Roots's liquid ring vacuum units.
Background technique
Roots's liquid ring vacuum unit is a kind of common vacuum generating device, general compound mode is multi-stage roots vacuum pump and liquid-ring vacuum pump coupling, and liquid-ring vacuum pump produces fore vacuum also simultaneously as the absorption treating device of the tail gas of Roots pump generation as preevacuation pump; And multi-stage roots vacuum pump is directly connected by pipeline; The entrance of unit is directly connected to the gas phase pipe outlet of device usually.
This kind of unit stably can produce vacuum, and be easy to control, therefore also the polyplant needing vacuum as reaction region is applied in a large number, particularly there is the polyplant (as polycarbonate (PC) synthesizer) of polycondensation reaction, because polycondensation reaction can produce small molecule by-product in a large number in the process of carrying out, must be removed in time just to make reaction carry out to postive direction, otherwise the polycondensation product of expectation cannot be obtained, so must vacuumize to remove small molecule by-product to reaction system, and stable vacuum is also most important to stablizing of reaction.
Such unit has following shortcoming:
1: in the vacuum of the polycondensation reaction of polycarbonate (PC) synthesizer, while a large amount of small molecule by-product phenol of extraction, also entrainment portions low polymer enters into vacuum system, if a large amount of phenol directly enters into above-mentioned Roots's pendular ring unit, greatly will increase the load of Roots pump, reduce the ability that it vacuumizes, directly affect degree of vacuum, and harmful effect is caused to reaction.
2: a large amount of tail gas that existing Roots's liquid ring vacuum unit produces also can increase the load of downstream exhaust gas treatment device greatly.
Model utility content
For the deficiency that prior art exists, the utility model provides a kind of three grades of Roots's liquid ring vacuum units.Effectively reduce the harmful effect that in process steam, low molecule by product and low polymer vacuumize Roots pump itself and system, make unit can produce stable vacuum.
A kind of three grades of Roots's liquid ring vacuum units, is characterized in that:
Comprise one-level condensing plant, B-grade condensation equipment, three grades of condensing plants, liquid-ring vacuum pump and exhaust gas processing device;
Described one-level condensing plant, B-grade condensation equipment, three grades of condensing plants, liquid-ring vacuum pump and exhaust gas processing device are connected in series by fluid connecting line successively;
Described one-level condensing plant comprises the first Roots pump group and the first condensation tube group of equal number, and described first condensation tube group is positioned at the upper head piece of the first Roots pump group;
Described B-grade condensation equipment comprises the second Roots pump group and the second condensation tube group of equal number, and described second condensation tube group is positioned at the upper head piece of the second Roots pump group;
Described three grades of condensing plants comprise the 3rd Roots pump group and the 3rd condensation tube group of equal number, and described 3rd condensation tube group is positioned at the upper head piece of the 3rd Roots pump group.
By adopting technique scheme, the utility model is by the condensation device of increase by three grades, effectively reduce the harmful effect that in process steam, low molecule by product and low polymer vacuumize Roots pump itself and system, make unit can produce stable vacuum.
As preferably, described first Roots pump group comprises the Roots pump of three laid out in parallel, and described first condensation tube group comprises the craspedodrome condensation tube of three laid out in parallel, and each craspedodrome condensation tube is connected by fluid connecting line with between Roots pump.Described second Roots pump group comprises the Roots pump of three laid out in parallel, and each craspedodrome condensation tube of craspedodrome condensation tube that described second condensation tube group comprises three laid out in parallel is connected by fluid connecting line with between Roots pump.Described 3rd Roots pump group comprises the Roots pump of two laid out in parallel, and described 3rd condensation tube group comprises the tubular heat exchanger of two laid out in parallel, is connected between each tubular heat exchanger with Roots pump by fluid connecting line.
By adopt technique scheme, arranged in parallel condensation device and Roots pump shunting condensation is carried out to process steam, increase condensation effect.
As preferably, described three grades of fluid connecting line between condensing plant and liquid-ring vacuum pump are provided with gas-liquid separator.
By adopting technique scheme, condensed waste liquid is separated with process steam by gas-liquid separator, prevents exhaust gas processing device from blocking because of waste liquid.
As preferably, the fluid connecting line between described gas-liquid separator and liquid-ring vacuum pump is provided with filter.
By adopting technique scheme, preliminary purification being carried out to process steam, reducing exhaust emissions to the pollution of environment.
As preferably, reflux line is provided with between described liquid-ring vacuum pump and one-level condensing plant, be provided with automatic regulating valve between described reflux line, described automatic regulating valve and liquid-ring vacuum pump are provided with bypass line, and described exhaust gas processing device is installed on bypass line.
By adopting technique scheme, the pipeline of one-level condensing plant is back in the increase of liquid ring vacuum pump discharge, a tail gas part is made to be back to Roots's liquid ring vacuum unit, another part is transported to downstream exhaust gas treatment device, automatic regulating valve is installed on reflux line be used for controlling Roots's liquid ring vacuum unit inlet degree of vacuum simultaneously, the load of branch road exhaust gas processing device can be reduced.
The degree of vacuum of the adjustable tail gas of the automatic regulating valve on reflux line, can reduce the load of downstream exhaust gas treatment device.
As preferably, described first condensation tube group is using conduction oil as heating agent, and described second condensation tube group is using steam as heating agent.
By adopting technique scheme, the temperature that different heating agents is convenient to adjusting process steam ensures condensation effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of three grades of Roots's liquid ring vacuum train embodiments of the utility model.
As figure description of symbols: 1, the first condensation tube group; 2, the first Roots pump group; 3, the second condensation tube group; 4, the second Roots pump group; 5, the 3rd condenser tube group; 6, the 3rd Roots pump group; 7, gas-liquid separator; 8, filter; 9, liquid-ring vacuum pump; 10, exhaust gas processing device; 11, automatic regulating valve; 12, one-level condensing plant; 13, B-grade condensation equipment; 14, three grades of condensing plants; 15, fluid connecting line; 16, reflux line; 17, bypass line.
Embodiment
With reference to Fig. 1, a kind of three grades of Roots's liquid ring vacuum train embodiments of the utility model are described further.
One-level condensing plant 12, B-grade condensation equipment 13 and three grades of condensing plants 14 are connected in series by fluid connecting line 15 successively, suction is produced under three grades of Roots pump groups and liquid-ring vacuum pump 9 operate, process steam enters the first condensation tube group 1 by ingress, and described first condensation tube group 1 comprises the craspedodrome condensation tube of three laid out in parallel.Described first condensation tube group 1, using conduction oil as heating agent, carries out preliminary condensation to the process steam entered.The lower head piece of the first condensation tube group 1 is communicated with the first Roots pump group 2 by fluid connecting line 15, and described first Roots pump group 2 comprises the Roots pump of three laid out in parallel.Preliminary condensed process steam flows into the second condensation tube group 3 through the first Roots pump group 2 by fluid connecting line 15, described second condensation tube group 3 comprises the craspedodrome condensation tube of three laid out in parallel and using steam as heating agent, carries out second time condensation to the process steam entered.
The lower head piece of the second condensation tube group 3 is communicated with the second Roots pump group 4 by fluid connecting line 15, and described second Roots pump group 4 comprises the Roots pump of three laid out in parallel.Two Roots pump group 4 times head pieces are communicated with the 3rd condenser tube group 5 by fluid connecting line 15, described 3rd condenser tube group 5 comprises two laid out in parallel tubular heat exchangers, process steam flows into the 3rd condenser tube group the 5, three condenser tube group 5 through the second Roots pump group 4 and carries out third time condensation to the process steam entered.
3rd condenser tube group 5 times head piece is communicated with the 3rd Roots pump group 6 by fluid connecting line 15, and described 3rd Roots pump group 6 comprises the Roots pump of two laid out in parallel.3rd Roots pump group 6 times head piece is communicated with gas-liquid separator 7 by fluid connecting line 15, three grades of condensed process steams flow into gas-liquid separator 7 by through the 3rd Roots pump group 6 pump, and remaining process steam is separated with condensed waste liquid by gas-liquid separator 7.
The process steam flowed out from the lower head piece of gas-liquid separator 7 introduces filter 8 by fluid connecting line 15, and filter 8 pairs of process steams carry out preliminary purification.The lower head piece of filter 8 is communicated with liquid-ring vacuum pump 9 by fluid connecting line 15, reflux line 16 is provided with between described liquid-ring vacuum pump 9 and one-level condensing plant 12, the pipeline of described reflux line 16 increases and has an automatic regulating valve 11, described automatic regulating valve 11 is provided with bypass line 17 with liquid-ring vacuum pump 9, and described exhaust gas processing device 10 is installed on bypass line 17.Described reflux line 16 makes a tail gas part be back to Roots's liquid ring vacuum unit, another part is transported to the exhaust gas processing device 10 of bypass line 17, automatic regulating valve 11 is installed on reflux line 16 be used for controlling Roots's liquid ring vacuum unit inlet degree of vacuum simultaneously, the load of the exhaust gas processing device 11 of bypass line 17 can be reduced.Described exhaust gas processing device 10 carries out double purification to the process steam of discharging, and reduces the dustiness of tail gas.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. three grades of Roots's liquid ring vacuum units, is characterized in that:
Comprise one-level condensing plant, B-grade condensation equipment, three grades of condensing plants, liquid-ring vacuum pump and exhaust gas processing device;
Described one-level condensing plant, B-grade condensation equipment, three grades of condensing plants, liquid-ring vacuum pump and exhaust gas processing device are connected in series by fluid connecting line successively;
Described one-level condensing plant comprises the first Roots pump group and the first condensation tube group of equal number, and described first condensation tube group is positioned at the upper head piece of the first Roots pump group;
Described B-grade condensation equipment comprises the second Roots pump group and the second condensation tube group of equal number, and described second condensation tube group is positioned at the upper head piece of the second Roots pump group;
Described three grades of condensing plants comprise the 3rd Roots pump group and the 3rd condensation tube group of equal number, and described 3rd condensation tube group is positioned at the upper head piece of the 3rd Roots pump group.
2. a kind of three grades of Roots's liquid ring vacuum units according to claim 1, it is characterized in that, described first Roots pump group comprises the Roots pump of three laid out in parallel, described first condensation tube group comprises the craspedodrome condensation tube of three laid out in parallel, and each craspedodrome condensation tube is connected by fluid connecting line with between Roots pump.
3. a kind of three grades of Roots's liquid ring vacuum units according to claim 1, it is characterized in that, described second Roots pump group comprises the Roots pump of three laid out in parallel, and each craspedodrome condensation tube of craspedodrome condensation tube that described second condensation tube group comprises three laid out in parallel is connected by fluid connecting line with between Roots pump.
4. a kind of three grades of Roots's liquid ring vacuum units according to claim 1, it is characterized in that, described 3rd Roots pump group comprises the Roots pump of two laid out in parallel, described 3rd condensation tube group comprises the tubular heat exchanger of two laid out in parallel, is connected between each tubular heat exchanger with Roots pump by fluid connecting line.
5. a kind of three grades of Roots's liquid ring vacuum units according to claim 1, is characterized in that, described three grades of fluid connecting line between condensing plant and liquid-ring vacuum pump are provided with gas-liquid separator.
6. a kind of three grades of Roots's liquid ring vacuum units according to claim 5, its spy is, the fluid connecting line between described gas-liquid separator and liquid-ring vacuum pump is provided with filter.
7. a kind of three grades of Roots's liquid ring vacuum units according to claim 1, it is characterized in that, reflux line is provided with between described liquid-ring vacuum pump and one-level condensing plant, between described reflux line, automatic regulating valve is installed, described automatic regulating valve and liquid-ring vacuum pump are provided with bypass line, and described exhaust gas processing device is installed on bypass line.
8. a kind of three grades of Roots's liquid ring vacuum units according to claim 1 is characterized in that, described first condensation tube group is using conduction oil as heating agent, and described second condensation tube group is using steam as heating agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504650.XU CN204783661U (en) | 2015-07-13 | 2015-07-13 | Tertiary roots's pendular ring vacuum unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504650.XU CN204783661U (en) | 2015-07-13 | 2015-07-13 | Tertiary roots's pendular ring vacuum unit |
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| Publication Number | Publication Date |
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| CN204783661U true CN204783661U (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520504650.XU Active CN204783661U (en) | 2015-07-13 | 2015-07-13 | Tertiary roots's pendular ring vacuum unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014997A (en) * | 2016-07-12 | 2016-10-12 | 上海伊莱茨真空技术有限公司 | Three-level-roots-water ring intelligent frequency converting control vacuum system and control method thereof |
| CN110394017A (en) * | 2019-07-19 | 2019-11-01 | 江门谦信化工发展有限公司 | A kind of vacuum system produced applied to acrylic acid and esters of acrylic acid |
| CN110508092A (en) * | 2019-09-27 | 2019-11-29 | 唐山三友氯碱有限责任公司 | Tai gas of rectifying processing system and its automatic running pattern in production of vinyl chloride by calcium carbide method production technology |
-
2015
- 2015-07-13 CN CN201520504650.XU patent/CN204783661U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014997A (en) * | 2016-07-12 | 2016-10-12 | 上海伊莱茨真空技术有限公司 | Three-level-roots-water ring intelligent frequency converting control vacuum system and control method thereof |
| CN106014997B (en) * | 2016-07-12 | 2018-07-13 | 上海伊莱茨真空技术有限公司 | A kind of three-level Roots-water ring intelligent frequency-conversion control vacuum system and its control method |
| CN110394017A (en) * | 2019-07-19 | 2019-11-01 | 江门谦信化工发展有限公司 | A kind of vacuum system produced applied to acrylic acid and esters of acrylic acid |
| CN110508092A (en) * | 2019-09-27 | 2019-11-29 | 唐山三友氯碱有限责任公司 | Tai gas of rectifying processing system and its automatic running pattern in production of vinyl chloride by calcium carbide method production technology |
| CN110508092B (en) * | 2019-09-27 | 2021-05-28 | 唐山三友氯碱有限责任公司 | Rectification tail gas treatment system in calcium carbide method chloroethylene production process and automatic operation mode thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 655 Haitian Middle Road, Zhenhai Chemical Industry Zone, Ningbo City, Zhejiang Province 315204 Patentee after: Ningbo Dafeng Jiangning New Material Technology Co.,Ltd. Country or region after: China Address before: 315204 Haishan Road, Ningbo Petrochemical Economic and Technological Development Zone, Zhenhai District, Ningbo City, Zhejiang Province Patentee before: NINGBO ZHETIE DAPHOON CHEMICAL Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240822 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Country or region after: China Patentee after: Ningbo Dafeng Jiangning New Material Technology Co.,Ltd. Patentee after: Sinopec Ningbo Zhenhai Refining and Chemical Co.,Ltd. Address before: No. 655 Haitian Middle Road, Zhenhai Chemical Industry Zone, Ningbo City, Zhejiang Province 315204 Patentee before: Ningbo Dafeng Jiangning New Material Technology Co.,Ltd. Country or region before: China |