CN104274991A - Multi-point vacuum pumping system and multi-point vacuum pumping method - Google Patents
Multi-point vacuum pumping system and multi-point vacuum pumping method Download PDFInfo
- Publication number
- CN104274991A CN104274991A CN201310277405.5A CN201310277405A CN104274991A CN 104274991 A CN104274991 A CN 104274991A CN 201310277405 A CN201310277405 A CN 201310277405A CN 104274991 A CN104274991 A CN 104274991A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- equipment
- vacuum pumping
- concetrated pipe
- vaccum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a multi-point vacuum pumping system and a multi-point vacuum pumping method. The vacuum pumping system is used for the vacuum pumping of two or above two mutually-independent parallel vacuum operation devices, and is a group of two or above two-stage vacuum pumping apparatuses composed of vacuum pumping devices and condensation cooling devices, and a collecting tube is arranged in the multi-point vacuum pumping system; in front of the collecting tube, the mutually-independent parallel vacuum operation devices are respectively connected with the collecting tube through the corresponding vacuum pumping devices, that is, the non-condensable gas outlet pipelines of all the vacuum pumping devices gather to the collecting tube; and a common one, two or above two-stage serial vacuum pumping device is arranged behind the collecting tube, that is, the collected non-condensable gas enters the rear common vacuum pumping device. The system can effectively solve the problems of complex flow, large occupied area, high investment, low efficiency, high energy consumption and the like of a vacuum pumping system due to the vacuum pumping of a plurality of apparatuses, and has the advantages of stable operation and high operational flexibility.
Description
Technical field
The present invention relates to decompression vacuum pumping field, furtherly, relate to a kind of multiple spot pumped vacuum systems and multiple spot vacuum pumping method.
Background technology
In the industrial production of the industries such as oil refining, petrochemical industry, Coal Chemical Industry, metallurgy, food and pharmacy; vacuumizing condition usually can be adopted to realize technological requirement; thus extensively there is the equipment of vacuumizing, be often provided with one or more vacuum operated equipment in a set of process units.Such as: the vacuum distillation tower in oil plant crude(oil)unit is a vacuum operated equipment; The decompression distillation of relatively complicated either shallow decompression distillation and further depressurized distillation, one section of decompression and two sections of decompression distillation, Lube Type multi-product specification etc. are then containing multiple stage vacuum operated equipment.The vacuum state of vacuum operated equipment is achieved by arranging pumped vacuum systems, and the configuration of pumped vacuum systems, by the power consumption of polymer processing of direct relation auto levelizer, occupation of land and equipment investment.
At present, conventional pumped vacuum systems configuration is general adopts man-to-man mode, and namely a vacuum operated equipment configures a set of pumped vacuum systems, hereinafter referred to as single-point pumped vacuum systems.This system can comprise one-level, two-stage, three grades, even level Four vaccum-pumping equipment and condensing cooling equipment, namely usually said multistage vacuum pumping technology.For the decompression distillation tower top pumped vacuum systems of crude oil atmospheric vacuum distillation device, Top of Vacuum Tower vacuum require according to the difference of the operator scheme of decompression distillation, meteorological condition, public work condition and the extracting rate of decompression distillation and horsepower requirements different, and different.The Top of Vacuum Tower operating pressure of general dry vacuum distillation production operation is not usually higher than 15mmHg (a), at existing vaccum-pumping equipment, under condensing cooling equipment and technology and public work condition, most employing three grades of pumped vacuum systems, its basic procedure is as shown in Figure 1: vacuum operated equipment 1(and vacuum tower) gas stream A be introduced into first order evacuation system 41, comprising vaccum-pumping equipment 21 and condensing cooling equipment 31, flow B after vaccum-pumping equipment 21 boosts is cooled to 35 ~ 40 DEG C to discharge condensate liquid C through condensing cooling equipment 31 again, not solidifying gas D enters second level pumped vacuum systems 42 again, after vaccum-pumping equipment 22 boosts, logistics F is cooled to 40 ~ 45 DEG C to discharge condensate liquid G through condensing cooling equipment 32 again, discharge the not solidifying gas H after condensate liquid and enter third level pumped vacuum systems 43 again, after vaccum-pumping equipment 23 boosts, stream I is cooled to 45 ~ 50 DEG C to discharge condensate liquid J through condensing cooling equipment 33 more equally, last has been that the not solidifying gas K of pressure-fired leaves pumped vacuum systems and enters into subsequent processing and process.Three grades of pumped vacuum systems flow processs of the complete set that Here it is extensively adopts at present.
Chinese patent CN2441090Y provides a kind of Multifunctional vacuum refrigerator, it is primarily of vaporization chamber and steam jet pump and condenser composition, it is characterized in that this steam jet pump is multistage and row jet pump, described multistage pump is three ~ Pyatyi, every grade of pump two ~ tetra-arranges, first order pump is directly connected with vaporization chamber by control valve, one thermojet pump is set between the second level and third level pump, the efferent duct of fourth stage pump is connected with noise reduction condenser, and No. two condensers are connected with running water pipe respectively with noise reduction condenser inlet end.This technology and prior art (single-point pumped vacuum systems) similar, vaporization chamber is equivalent to a vacuum operated equipment.Multistage pump is equivalent to vaccum-pumping equipment, and condenser is the requisite part of this technical process, and it plays and reduces following process process load, reduces the effect of energy consumption.Also mention a thermojet pump in this technology, its effect is heating, provides hot water, instead of vaccum-pumping equipment, neither vacuum operated equipment.
Chinese patent CN1136463A provides a kind of vacuum-pumping system for pressure reduced distilling tower, it comprises condenser, vacuum jet and is attached thereto the pipeline connect, and it is characterized in that mechanical type vacuum pumping pump set up by the condensator outlet line after Top of Vacuum Tower afterbody vacuum jet.It is the typical apply of the prior art (single-point pumped vacuum systems) described in the present invention.Mainly achieve Steam Jetting Pump to find time with mixing of mechanical type vacuum pumping pump.
And for there is the process units of multiple vacuum operated equipment simultaneously, as: the either shallow decompression distillation in crude(oil)unit and further depressurized distillation, two sections of decompression distillation etc., then need to arrange single-point pumped vacuum systems as above respectively to each vacuum operated equipment by prior art, namely need multiple such flow process to realize the vacuum condition of different vacuum operated equipment respectively.The process units of three vacuum operated equipment is comprised for one, the operating pressure of every platform vacuum operated equipment is respectively 15mmHg (a), 30mmHg (a) and 90mmHg (a), its basic procedure is as shown in Figure 2: according to the condition such as technical merit and cold public work situation of existing vaccum-pumping equipment and condensing cooling equipment, the vacuum of vacuum operated equipment 1a and vacuum operated equipment 1b is higher (being respectively 15mmHg (a) and 30mmHg (a)), need to adopt three grades of single-point pumped vacuum systems respectively, flow process describes same Fig. 1, and the vacuum of last vacuum operated equipment 1c relatively low (90mmHg (a)), then can adopt two-stage single-point pumped vacuum systems, namely the gas stream Ac of vacuum operated equipment 1c first cools through preposition condensing cooling equipment 30 and discharges condensate liquid Cc, not solidifying gas Dc enters the vaccum-pumping equipment 21c of first order pumped vacuum systems 41c again, after boosting, logistics Fc cools through condensing cooling equipment 31c and discharges condensate liquid Gc, solidifying gas Hc and then the vaccum-pumping equipment 22c entering second level pumped vacuum systems 42c continue to boost to 780 ~ 840mmHg (a), stream I c enters into condensing cooling equipment 32c again and cools discharge condensate liquid Jc, last has been that the not solidifying gas Kc of pressure-fired leaves pumped vacuum systems and enters into subsequent processing and process.Obviously, when there is many cover pumped vacuum systems in a process units, the pumped vacuum systems that many covers are such need be set, there is flow process complexity, equipment investment is high, plant area is large, the shortcoming that the power consumption of polymer processing with timer is large.
Summary of the invention
For solving problems of the prior art, the invention provides a kind of multiple spot pumped vacuum systems and multiple spot vacuum pumping method.Can effectively solve because of multiple devices vacuumize the pumped vacuum systems flow process that causes complicated, take up an area large, invest the problems such as high, efficiency is low, energy consumption is high, system running is stable, operating flexibility is high.
An object of the present invention is to provide a kind of multiple spot pumped vacuum systems.
Described pumped vacuum systems be two or more vacuum operated equipment separate, in parallel are vacuumized, by comprising the integrated of two-stage that vaccum-pumping equipment and condensing cooling equipment forms or the above vacuum extractor of two-stage,
Concetrated pipe is provided with in described multiple spot pumped vacuum systems;
Before described concetrated pipe, each vacuum operated equipment separate, in parallel is connected with described concetrated pipe each via the vacuum extractor corresponding with it, and namely the fixed gas outlet line of each vacuum extractor is pooled to described concetrated pipe;
After described concetrated pipe, be provided with the vacuum extractor that more than shared one-level, two-stage or two-stage are connected, the fixed gas after namely collecting enters the unified vacuum extractor in rear portion.
Before described concetrated pipe, described separate vacuum operated equipment adopts one or more modes following to be connected with concetrated pipe respectively:
Or be directly connected with concetrated pipe;
Or be connected with concetrated pipe by one or more levels vacuum extractor;
Or be connected with concetrated pipe by preposition condensing cooling equipment.
Two of object of the present invention is to provide a kind of multiple spot vacuum pumping method.
Comprise:
(1) before concetrated pipe, the logistics of described vacuum operated equipment enters corresponding vacuum extractor and after isolating condensate liquid, and the fixed gas of discharging separately collects and enters concetrated pipe mixing;
(2) the mixing fixed gas obtained in step (1) enters the unified vacuum extractor in the rear portion after concetrated pipe, vacuumizes further to each vacuum operated equipment simultaneously.
Equal at the pressure of concetrated pipe mixing Qian Ge road on-condensible gas.
The vacuum of described each vacuum operated equipment is same or different.
The present invention is the multiple spot pumped vacuum systems that the multistage vacuum pumping technology of application vacuumizes the multiple stage vacuum operated equipment existed in same process units, and simultaneously this system realizes multiple stage vacuum operated equipment by a set of integrated multistage pumped vacuum systems to vacuumize.
The present invention can be achieved through the following technical solutions:
When there is two or more vacuum operated equipment in same process units, illustrate as shown in Figure 3 for three vacuum operated equipment 1a, 1b, 1c.According to the difference of each vacuum operated equipment to vacuum level requirements, the material flow A a of vacuum operated equipment 1a with 1b that vacuum level requirements is higher is first connected with respective vaccum-pumping equipment 21a with 21b respectively with Ab, flow B a after vaccum-pumping equipment 21a and 21b boosts and Bb enters condensing cooling equipment 31a and 31b respectively and cools, discharge condensed fluid Ca and Cb, not solidifying gas Da and Db enters next stage vaccum-pumping equipment 22; The material flow A c of the vacuum operated equipment 1c that vacuum level requirements is lower is then introduced into preposition condensing cooling equipment 30, discharges condensed fluid Cc after condensing cooling, and not solidifying gas Dc enters vaccum-pumping equipment 22 again.After above-mentioned two kinds of flow processs, multiply not solidifying gas Da, Db, Dc reach identical pressure and can be mixed into next stage vaccum-pumping equipment 22, again through boosting and condensation, separate condensed fluid G, not solidifying gas H continues to enter next stage vaccum-pumping equipment 23 and condensing cooling equipment 33, by that analogy, discharges condensed fluid J, final not solidifying gas K boosts to pressure-fired, leaves pumped vacuum systems.
Described multiple spot pumped vacuum systems, be often called one-level through one group of vaccum-pumping equipment and condensing cooling equipment from vacuum operated equipment logistics out, as in Fig. 3: 41a and 41b is the first order, 42 is the second level, and 43 is the third level.The configuration progression of conventional single point pumped vacuum systems is generally that technical merit, system share engineering specifications and local meteorological condition etc. according to the vacuum height of vacuum operated equipment, the vaccum-pumping equipment adopted and condensing cooling equipment are because usually determining.The configuration of in like manner corresponding to multiple stage vacuum operated equipment multiple spot pumped vacuum systems progression is also relevant with above-mentioned factor.Require according to the maximum vacuum of multiple stage vacuum operated equipment and total progression of concrete ability determination pumped vacuum systems of vaccum-pumping equipment, if progression total in Fig. 3 is three grades; Vacuum lower according to relative requirement again selects the manifold locations of multiple spot pumped vacuum systems.
In described multiple spot pumped vacuum systems, concetrated pipe 5 refers to from the material flow A a of different vacuum operated equipment 1a, 1b, 1c, Ab, Ac respectively through after pressure-raising and condensation, and multiply solidifying gas Da, Db, Dc converge the position entering next stage vaccum-pumping equipment.
In described multiple spot pumped vacuum systems, before concetrated pipe, an every platform vacuum operated equipment all respectively corresponding road vacuumizes flow process, every road flow process can be single-stage (41a and 41b as in Fig. 3), also can be multistage, first can also enter pumped vacuum systems (as 30 in Fig. 3) again after preposition condensing cooling equipment discharges condensate liquid; And Ze Ge road flow process gathers and vacuumizes flow process for a set of after concetrated pipe 5.Concetrated pipe 5 position then needs the inter-stage selecting each shunt discharge pressure equal.
Described multiple spot pumped vacuum systems, the selection of manifold locations is the result of the operating pressure of comprehensive vacuum operated equipment, the exhaust capacity of vaccum-pumping equipment and the total progression of system.And the pressure between vaccum-pumping equipments at different levels after concetrated pipe also also exists energy saving optimizing problem.Such as in two-stage pumped vacuum systems, when previous stage vaccum-pumping equipment discharge pressure is higher, the investment of this grade of vaccum-pumping equipment and energy consumption are just higher, and the rear stage vaccum-pumping equipment be attached thereto is then because suction pressure is higher, and investment is relative with energy consumption reduces for it.Vice versa.Consider investment and the energy consumption of two-stage vaccum-pumping equipment and condensing cooling equipment, an interstage pressure optimized can be drawn.Therefore, by optimizing the pressure between vaccum-pumping equipment at different levels, the object that pumped vacuum systems energy ezpenditure is minimum can be realized.
Described multiple spot pumped vacuum systems, the outlet temperature of its condensing cooling equipment at different levels is related to the consumption of cooling water, the live load of next stage vaccum-pumping equipment and the investment of condensing cooling equipment.Based on cold public work and meteorological condition, adopt lower cold rear temperature, more condensate liquid can be discharged, reduce not solidifying gas purging amount, thus reduce the load of follow-up pumped vacuum systems, equipment investment and the operation energy consumption of follow-up pumped vacuum systems can be reduced.And too low cold rear temperature, significantly can increase again investment and the energy consumption of this condensing cooling equipment.Therefore, by optimizing the outlet temperature of condensing cooling equipment, the object reducing pumped vacuum systems investment and reduce energy ezpenditure can be realized.
In described multiple spot pumped vacuum systems, the setting of preposition condensate cooler should depending on the vacuum of vacuum operated equipment, logistics composition and public work condition, preliminary condensation cooler is set and can discharges lime set, reduce gas phase load, reduce the investment of follow-up pumped vacuum systems and energy ezpenditure.
Described multiple spot pumped vacuum systems, can stop using arbitrarily as required in actual production operating process one or more vacuum operated equipment any and closely connected pumped vacuum systems, and the normal operation of other vacuum operated equipment and pumped vacuum systems can not be affected.
Described multiple spot pumped vacuum systems, every one-level vaccum-pumping equipment can be separate unit vaccum-pumping equipment, the multiple stage vaccum-pumping equipment parallel operation that exhaust capacity also can be adopted identical, also or several vaccum-pumping equipments parallel operation configuration adopting exhaust capacity to differ in size, to improve the adaptive capacity to load variations of bleeding, and save the energy ezpenditure of system.Such as: adopt 3 exhaust capacitys to be respectively the vaccum-pumping equipment parallel operation of 20%, 40%, 80%, the regulating power of load by 20% to 140% change of bleeding can be realized, the object reaching quiet run and save energy.
Described multiple spot pumped vacuum systems, the operating pressure of vacuum operated equipment can be identical, also can be different.By appropriately selecting the pressure ratio of the sum of series of pumped vacuum systems vaccum-pumping equipment at different levels, while realizing multiple spot pumped vacuum systems Equipments Setting, the requirement reducing investment outlay and reduce energy ezpenditure to greatest extent can be met.
Described multiple spot pumped vacuum systems, the pattern of its vaccum-pumping equipment is not limit, and can be Steam Jetting Pump, also can be liquid ring vacuum pumping system, can also be the Liquid inject pumping system etc. recycled.The selection of vaccum-pumping equipment needs to consider according to equipment and technology level, device efficiency, equipment investment and production maintenance maintenance cost etc.
Described multiple spot pumped vacuum systems, its condensing cooling Type of equipment is not limit, the humidification air cooling of various types can be adopted, also can adopt the water-cooled of various types, its selection gist according to the technical merit of public work condition, meteorological condition and condensing cooling equipment, need consider the problems such as energy ezpenditure, equipment investment and system overhaul maintenance cost as a whole.
Effect of the present invention is:
Equipments Setting, the process structure of multiple spot pumped vacuum systems of the present invention are reasonable, clear thinking, and according to public work condition, meteorological condition, equipment and technology level, abundant optimized device selection and arrangement, operating condition selection and pressure ratio relation, reach that flow process is simple, system run all right, operation flexible adjustment, save system investments and reduce energy ezpenditure.
Accompanying drawing explanation
Fig. 1 is atmospheric and vacuum distillation unit decompression distillation tower top pumped vacuum systems schematic diagram
Fig. 2 is the single-point pumped vacuum systems schematic diagram of multiple stage vacuum operated equipment in prior art
Fig. 3 is multiple spot pumped vacuum systems schematic diagram of the present invention
Fig. 4 is 2 vaccum supply system schematic diagrames of the specific embodiment of the invention
Description of reference numerals:
1 vacuum operated equipment; 21 one-level vaccum-pumping equipments; 22 secondary vaccum-pumping equipments; 23 3 grades of vaccum-pumping equipments; 31 one-level condensing cooling equipment; 32 B-grade condensation cooling devices; 33 3 grades of condensing cooling equipment; 41 one-level pumped vacuum systems; 42 secondary pumped vacuum systems; 43 3 grades of pumped vacuum systems;
In Fig. 2:
1a vacuum operated equipment; 21a is used for the one-level vaccum-pumping equipment of vacuum operated equipment 1a; 22a is used for the secondary vaccum-pumping equipment of vacuum operated equipment 1a; 23a is used for three grades of vaccum-pumping equipments of vacuum operated equipment 1a; 31a is used for the one-level condensing cooling equipment of vacuum operated equipment 1a; 32a is used for the B-grade condensation cooling device of vacuum operated equipment 1a; 33a is used for three grades of condensing cooling equipment of vacuum operated equipment 1a; 41a is used for the one-level pumped vacuum systems of vacuum operated equipment 1a; 42a is used for the secondary pumped vacuum systems of vacuum operated equipment 1a; 43a is used for three grades of pumped vacuum systems of vacuum operated equipment 1a;
1b vacuum operated equipment; 21b is used for the one-level vaccum-pumping equipment of vacuum operated equipment 1b; 22b is used for the secondary vaccum-pumping equipment of vacuum operated equipment 1b; 23b is used for three grades of vaccum-pumping equipments of vacuum operated equipment 1b; 31b is used for the one-level condensing cooling equipment of vacuum operated equipment 1b; 32b is used for the B-grade condensation cooling device of vacuum operated equipment 1b; 33b is used for three grades of condensing cooling equipment of vacuum operated equipment 1b; 41b is used for the one-level pumped vacuum systems of vacuum operated equipment 1b; 42b is used for the secondary pumped vacuum systems of vacuum operated equipment 1b; 43b is used for three grades of pumped vacuum systems of vacuum operated equipment 1b;
1c vacuum operated equipment; 30 for the preposition condensing cooling equipment of vacuum operated equipment 1c; 21c is used for the one-level vaccum-pumping equipment of vacuum operated equipment 1c; 22c is used for the secondary vaccum-pumping equipment of vacuum operated equipment 1c; 31c is used for the one-level condensing cooling equipment of vacuum operated equipment 1c; 32c is used for the B-grade condensation cooling device of vacuum operated equipment 1c; 41c is used for the one-level pumped vacuum systems of vacuum operated equipment 1c; 42c is used for the secondary pumped vacuum systems of vacuum operated equipment 1c;
In Fig. 3:
5 concetrated pipes.
In Fig. 4:
Aa first Top of Vacuum Tower gas; Ab second Top of Vacuum Tower gas; The gas that Ba vaccum-pumping equipment 21a discharges; The gas that Bb vaccum-pumping equipment 21b discharges; Ca condensing cooling equipment 31a discharges lime set; Cb condensing cooling equipment 31b discharges lime set; Da condensing cooling equipment 31a discharges not solidifying gas; Db condensing cooling equipment 31b discharges not solidifying gas; Gaseous mixture after not solidifying gas Da and Db of E merges; The gas that F vaccum-pumping equipment 22 is discharged; G condensing cooling equipment 32 discharges lime set; H condensing cooling equipment 32 discharges not solidifying gas; J condensing cooling equipment 33 discharges lime set; K condensing cooling equipment 33 discharges not solidifying gas; 6 mechanical vacuumizing systems; L mechanical vacuumizing system 6 discharges not solidifying gas; M mechanical vacuumizing system 6 discharges lime set
Detailed description of the invention
Below in conjunction with embodiment, further illustrate the present invention.
Embodiment:
As shown in Figure 4, a kind of multiple spot pumped vacuum systems.
At two sections of vacuum distillation apparatus, the needs of total work flow and production, in crude oil atmospheric vacuum distillation device, are provided with two vacuum distillation towers, and first vacuum distillation tower 1a processes atmospheric residue, operating pressure 12mmHg (a) of Top of Vacuum Tower.Second vacuum tower 1b processes one section of decompression residuum, operating pressure 15mmHg (a) of Top of Vacuum Tower.These two vacuum distillation towers are two vacuum operated equipment.The present embodiment is 2 vaccum supply systems.
According to the technical merit of current vaccum-pumping equipment and condensing cooling equipment, and the meteorological condition in project construction place, public work condition, determine that total progression of this cover multiple spot pumped vacuum systems is three grades.The selection of concetrated pipe 5 position is that the Pressure Drop deducting first order pumped vacuum systems 41a and 41b and front and back pipe-line system thereof according to the operating pressure of vacuum operated equipment 1a and 1b is determined.This pressure determines the discharge pressure of vaccum-pumping equipment 21a and 21b.These two vaccum-pumping equipments get identical discharge pressure.
Vaccum-pumping equipment 21a is placed in first decompression distillation vacuum tower 1a top, its suction inlet is directly connected with top of tower, vacuum tower top gas Aa is introduced into the vaccum-pumping equipment 21a of first order pumped vacuum systems 41a, the gas Ba discharged through vaccum-pumping equipment 21a enters condensing cooling equipment 31a again, discharge lime set Ca after cooling, not solidifying gas Da enters second level pumped vacuum systems 42;
Vaccum-pumping equipment 21b is placed in second decompression distillation vacuum tower 1b top, its suction inlet is directly connected with top of tower, vacuum tower top gas Ab is introduced into the vaccum-pumping equipment 21b of first order pumped vacuum systems 41b, the gas Bb discharged through vaccum-pumping equipment 21b enters condensing cooling equipment 31b again, discharge lime set Cb after cooling, not solidifying gas Db enters second level pumped vacuum systems 42;
Not solidifying gas Da and Db merging place are the concetrated pipe 5 of 2 pumped vacuum systems, not solidifying gas E after merging enters the vaccum-pumping equipment 22 of second level pumped vacuum systems 42, Exhaust Gas F enters condensing cooling equipment 32, lime set G is discharged after cooling, not solidifying gas H divides two-way: a road enters the vaccum-pumping equipment 23 of third level pumped vacuum systems 43, vacuumize further, Exhaust Gas I enters condensing cooling equipment 33, lime set J is discharged after cooling, the operating pressure of not solidifying gas K reaches pressure-fired and requires (840mmHg (a)), delivers to subsequent processing process; Another road enters mechanical pumped vacuum systems 6, vacuumizes further, discharges lime set M, and the operating pressure of not solidifying gas L reaches pressure-fired requirement, send subsequent treatment.
The requirement that 12mmHg (a) and second segment decompression distillation vacuum tower operating pressure reach 15mmHg (a) is reached for meeting first paragraph decompression distillation vacuum tower operating pressure, consider the technical merit of vaccum-pumping equipment and condensing cooling equipment, the I and II vaccum-pumping equipment (21a, 21b and 22) of this cover pumped vacuum systems adopts Steam Jetting Pump, three grades of pumped vacuum systems 43 adopt steam and mechanical mixture pumped vacuum systems, wherein vaccum-pumping equipment 23 adopts Steam Jetting Pump, and mechanical vacuumizing system 6 adopts liquid ring vacuum pumping system.Condensing cooling equipment (31a, 31b, 32 and 33) adopts surface condenser.
According to the public work condition on project construction ground, optimize the cold rear temperature of condensing cooling equipment and the pressure ratio of vaccum-pumping equipment at different levels, under less equipment investment and lower energy consumption, select the outlet temperature about 38 DEG C of one-level condensing cooling equipment 21a and 21b; The cold rear temperature 42 DEG C of B-grade condensation cooling device 22; The cold rear temperature 50 C of three grades of condensing cooling equipment 23.The discharge pressure of one-level vaccum-pumping equipment 21a and 21b is optimized for 90mmHg (a), and suction pressure is respectively 11mmHg (a), 14mmHg (a); The suction pressure 82.5mmHg (a) of secondary vaccum-pumping equipment 22, discharge pressure 206mmHg (a); The suction pressure 190mmHg (a) of three grades of vaccum-pumping equipments 23, Steam Jetting Pump discharge pressure 880mmHg (a), liquid ring vacuum pump discharge head 840mmHg (a), pressure release 840mmHg (a) of pumped vacuum systems.
The selection of vaccum-pumping equipment at different levels is considered when production operation and production decision change, pumped vacuum systems should be able to realize energy-conservation to greatest extent, thus the form of multiple stage parallel operation is adopted, namely every one-level vaccum-pumping equipment arranges the evacuation differed in size that 3 exhaust capacitys are respectively 20%, 40% and 80% of Design cooling load, and the exhaust capacity of liquid-ring vacuum pump is then 80% of Design cooling load.
The present embodiment have employed multiple spot pumped vacuum systems of the present invention, achieve and by a set of multiple spot pumped vacuum systems, different vacuum operated equipment is vacuumized simultaneously, optimize equipment choice and configuration, operating condition selection and pressure ratio relation simultaneously, Equipments Setting simplifies, technological process is more reasonable, achieves the target of system run all right, operation flexible adjustment, saving system investments and reduction energy ezpenditure.
Claims (6)
1. a multiple spot pumped vacuum systems, described pumped vacuum systems be two or more vacuum operated equipment separate, in parallel are vacuumized, by comprising the integrated of two-stage that vaccum-pumping equipment and condensing cooling equipment forms or the above vacuum extractor of two-stage, it is characterized in that:
Concetrated pipe is provided with in described multiple spot pumped vacuum systems;
Before described concetrated pipe, each vacuum operated equipment separate, in parallel is connected with described concetrated pipe each via the vacuum extractor corresponding with it, and namely the fixed gas outlet line of each vacuum extractor is pooled to described concetrated pipe;
After described concetrated pipe, be provided with the vacuum extractor that more than shared one-level, two-stage or two-stage are connected, the fixed gas after namely collecting enters the unified vacuum extractor in rear portion.
2. multiple spot pumped vacuum systems as claimed in claim 1, is characterized in that:
Before described concetrated pipe, described separate vacuum operated equipment adopts one or more modes following to be connected with concetrated pipe respectively:
Or be directly connected with concetrated pipe;
Or be connected with concetrated pipe by one or more levels vacuum extractor;
Or be connected with concetrated pipe by preposition condensing cooling equipment.
3. adopt a multiple spot vacuum pumping method for multiple spot pumped vacuum systems as claimed in claim 1 or 2, it is characterized in that described method comprises:
(1) before concetrated pipe, the logistics of described vacuum operated equipment enters corresponding vacuum extractor and after isolating condensate liquid, and the fixed gas of discharging separately collects and enters concetrated pipe mixing;
(2) the mixing fixed gas obtained in step (1) enters the unified vacuum extractor in the rear portion after concetrated pipe, vacuumizes further to each vacuum operated equipment simultaneously.
4. multiple spot vacuum pumping method as claimed in claim 3, is characterized in that:
Equal at the pressure of concetrated pipe mixing Qian Ge road on-condensible gas.
5. multiple spot vacuum pumping method as claimed in claim 3, is characterized in that:
Simultaneously described each vacuum operated equipment operates, or operate separately.
6. multiple spot vacuum pumping method as claimed in claim 3, is characterized in that:
The vacuum of described each vacuum operated equipment is same or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310277405.5A CN104274991B (en) | 2013-07-03 | 2013-07-03 | A kind of multiple spot pumped vacuum systems and multiple spot vacuum pumping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310277405.5A CN104274991B (en) | 2013-07-03 | 2013-07-03 | A kind of multiple spot pumped vacuum systems and multiple spot vacuum pumping method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104274991A true CN104274991A (en) | 2015-01-14 |
| CN104274991B CN104274991B (en) | 2016-12-28 |
Family
ID=52250632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310277405.5A Active CN104274991B (en) | 2013-07-03 | 2013-07-03 | A kind of multiple spot pumped vacuum systems and multiple spot vacuum pumping method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104274991B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106318436A (en) * | 2015-06-18 | 2017-01-11 | 中国石油化工股份有限公司 | Pressure reduction tower top vacuum pumping system and pressure reduction method thereof |
| CN113087055A (en) * | 2021-04-21 | 2021-07-09 | 天津国投津能发电有限公司 | Multi-point vacuum pumping system and multi-point vacuum pumping method for low-temperature multi-effect seawater desalination device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136463A (en) * | 1995-05-23 | 1996-11-27 | 新疆石油管理局独山子炼油厂 | Vacuum-pumping system for pressure reduced distilling tower |
| US20040188237A1 (en) * | 2003-03-26 | 2004-09-30 | Chevron U.S.A. Inc. | Plant and method for vacuum distillation of hydrocarbon liquids |
| CN202052336U (en) * | 2011-05-10 | 2011-11-30 | 克拉玛依市金利化工有限责任公司 | Vacuum-pumping system of precision fractionating device |
| CN202072680U (en) * | 2011-05-30 | 2011-12-14 | 湖南大三湘油茶科技有限公司 | High-efficient vacuum system for refining of oils and fats |
-
2013
- 2013-07-03 CN CN201310277405.5A patent/CN104274991B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136463A (en) * | 1995-05-23 | 1996-11-27 | 新疆石油管理局独山子炼油厂 | Vacuum-pumping system for pressure reduced distilling tower |
| US20040188237A1 (en) * | 2003-03-26 | 2004-09-30 | Chevron U.S.A. Inc. | Plant and method for vacuum distillation of hydrocarbon liquids |
| CN202052336U (en) * | 2011-05-10 | 2011-11-30 | 克拉玛依市金利化工有限责任公司 | Vacuum-pumping system of precision fractionating device |
| CN202072680U (en) * | 2011-05-30 | 2011-12-14 | 湖南大三湘油茶科技有限公司 | High-efficient vacuum system for refining of oils and fats |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106318436A (en) * | 2015-06-18 | 2017-01-11 | 中国石油化工股份有限公司 | Pressure reduction tower top vacuum pumping system and pressure reduction method thereof |
| CN106318436B (en) * | 2015-06-18 | 2017-12-22 | 中国石油化工股份有限公司 | One kind decompression column overhead pumped vacuum systems and its decompression method |
| CN113087055A (en) * | 2021-04-21 | 2021-07-09 | 天津国投津能发电有限公司 | Multi-point vacuum pumping system and multi-point vacuum pumping method for low-temperature multi-effect seawater desalination device |
| CN113087055B (en) * | 2021-04-21 | 2024-03-12 | 天津国投津能发电有限公司 | Multi-point vacuumizing system and multi-point vacuumizing method of low-temperature multi-effect sea water desalting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104274991B (en) | 2016-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104353258B (en) | Subtract top pumped vacuum systems and technique | |
| US20070278088A1 (en) | Plant and method for vacuum distillation of hydrocarbon liquids | |
| CN101503749B (en) | Vacuum degasification system steam jet and last stage pressure air injection vacuum technology | |
| CN104274991A (en) | Multi-point vacuum pumping system and multi-point vacuum pumping method | |
| EP2136039A2 (en) | Heat pump system, operation procedure therefor and evaporator system | |
| CN204319802U (en) | Subtract top pumped vacuum systems | |
| CN104190197A (en) | Device and technology for purifying waste gas escaping from top of wet coke quenching tower | |
| CN103820604B (en) | A kind of pumped vacuum systems for vacuum outgas smelting furnace | |
| CN110721557A (en) | Device and method for drying and purifying compressed gas | |
| CN203768397U (en) | Vacuumizing system for vacuum degassing and smelting furnace | |
| CN202229527U (en) | Pre-cooling system of air separation device | |
| CN213088238U (en) | Coal-fired power plant vacuum pump multistage cooling water system | |
| CN107062927B (en) | Multistage condenser reverse cooling noncondensable gas system for sea water desalination and process thereof | |
| CN108626968B (en) | Air separation precooling device and method using dew point indirect evaporative cooler | |
| US11465069B2 (en) | Diabatic distillation column | |
| CN206803793U (en) | One kind vacuumizes energy saving system | |
| CN104263868A (en) | Blasting dehumidification system for multiple blast furnaces and control method of blasting dehumidification system | |
| RU2381428C1 (en) | Method of condensate extraction from natural gas | |
| CN113959109B (en) | Consumption reduction method and system for propylene refrigeration compressor | |
| CN217435114U (en) | Novel no waste water discharge cooling system | |
| CN215136902U (en) | Multistage high-efficient vegetable and fruit juice evaporation concentration equipment | |
| CN214735567U (en) | Vacuum pumping device of pressure reducing tower | |
| CN216044255U (en) | Front-mounted coagulation double-tank two-stage vacuum pump set | |
| US20230096279A1 (en) | Vacuum system having condenser and root vacuum pump set | |
| US20230167822A1 (en) | Vacuum system having condenser and root vacuum pump set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |