CN202620765U - Tail gas recovering complete equipment for rectifying tower - Google Patents
Tail gas recovering complete equipment for rectifying tower Download PDFInfo
- Publication number
- CN202620765U CN202620765U CN 201220333840 CN201220333840U CN202620765U CN 202620765 U CN202620765 U CN 202620765U CN 201220333840 CN201220333840 CN 201220333840 CN 201220333840 U CN201220333840 U CN 201220333840U CN 202620765 U CN202620765 U CN 202620765U
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- vacuum
- tail gas
- rectifying column
- buffer tank
- utility
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Abstract
The utility model discloses tail gas recovering complete equipment for a rectifying tower. The tail gas recovering complete equipment comprises a vacuum condenser, a vacuum buffer tank, a vacuum unit and a condensate receiving tank, wherein one end of the vacuum condenser is connected with the rectifying tower, and the other end of the vacuum condenser is connected with the vacuum buffer tank; the vacuum buffer tank is connected in series with the vacuum unit through a gas phase outlet on the top of the vacuum buffer tank; the vacuum unit is provided with an exhaust pipeline; and the exhaust pipeline is connected in series with the condensate receiving tank. The utility model provides tail gas recovering complete equipment for a rectifying tower. The tail gas recovering complete equipment can be vacuumized and be used for recovering a low-boiling organic oil phase brought out of a vacuum pipeline, so that material loss and unit consumption can be lowered to the maximum extent, the treatment load and difficulty of a tail gas absorbing system are lowered at a certain degree, and water body pollution is avoided.
Description
Technical field
The utility model relates to a kind of tail gas recycle equipment, relates in particular to a kind of rectifying column tail gas recycle complete set of equipments.
Background technology
Up to the present; Rectifying column tail gas recycle equipment all be basically adopt water towards pump vacuum unit as vacuum equipment; Therefore the oil phase that low boil organic facies and the condensation that has caused being taken out of in the vacuum pipe got off can't all reclaim, and will increase the processing load and the difficulty of device for absorbing tail gas like this, the consequence that also can cause loss of material, unit consumption increase, cost also to increase severely simultaneously; Even more serious is that the low organic equal meeting of boiling that can't all reclaim causes water pollution.
Summary of the invention
The technical problem that the utility model will solve is; Can't reclaim whole tail gas to rectifying column tail gas recycle equipment in the prior art; And cause that loss of material, unit consumption increase, cost increases severely and consequences such as water pollution, provide a kind of and can vacuumize and reclaim the boil rectifying column tail gas recycle complete set of equipments of the oil phase that organic facies and condensation get off of taken out of in the vacuum pipe low.
The utility model solves the technical scheme that its technical problem adopted: a kind of rectifying column tail gas recycle complete set of equipments comprises vacuum condenser, vacuum buffer tank, vacuum unit and condensate liquid receiving tank; Vacuum condenser one end links to each other with rectifying column, and the other end is connected with vacuum buffer tank; Vacuum buffer tank is connected in series through the gaseous phase outlet and the vacuum unit at its top; The vacuum unit is provided with discharge duct, and discharge duct and condensate liquid receiving tank are connected in series.
In the said rectifying column tail gas recycle of the utility model complete set of equipments; The vacuum unit is the oil-free vacuum unit; The oil-free vacuum unit comprises one-level oilless vacuum pump, secondary Roots vaccum pump and final stage Roots vaccum pump; Secondary Roots vaccum pump one end is connected with the one-level oilless vacuum pump, and the other end is connected with the final stage Roots vaccum pump.
In the said rectifying column tail gas recycle of the utility model complete set of equipments, gaseous phase outlet is connected in series through first pipeline and vacuum unit.
In the said rectifying column tail gas recycle of the utility model complete set of equipments, valve and bellows are installed on first pipeline.
In the said rectifying column tail gas recycle of the utility model complete set of equipments, discharge duct is connected in series through valve and second pipeline and condensate liquid receiving tank.
The operation principle and the course of work of the said rectifying column tail gas recycle of the utility model complete set of equipments are: start vacuum condenser; The circulating water intake and the circulating water outlet of vacuum condenser are opened; Restart vacuum unit one-level vavuum pump, restart secondary Roots vaccum pump and final stage Roots vaccum pump as required.Treat that the tail gas in the rectifying column enters into the tube side of vacuum condenser; Recirculated water in the vacuum condenser shell side will carry out condensation to the tail gas in the tube side; Through after the condensation of vacuum condenser; The lower boiling tail gas of a part becomes liquid state by gaseous state, and the tail gas that from rectifying column, reclaims has so just become the mixture of liquid and gaseous state; This mixture gets into together and once cushions separation in the vacuum buffer tank; The liquid of separating is stayed in the vacuum buffer tank; Mouthful discharge that drains from the vacuum buffer pot bottom; The gaseous material of separating enters into first pipeline from the gaseous phase outlet on vacuum buffer tank top, and the discharge duct through the vacuum unit enters into the condensate liquid receiving tank to carry out secondary gas-liquid buffering and separate, and the gaseous material of separating through secondary gas-liquid buffering enters into the tail gas absorption system through pipeline; Liquid is still stayed in the condensate liquid receiving tank, discharges from the valve that drains of condensate liquid receiving tank bottom.Because having passed through secondary gas-liquid buffering separates; So the said rectifying column tail gas recycle of the utility model complete set of equipments can vacuumize and reclaim low organic oil phase that boils of being taken out of in the vacuum pipe; The processing load and the difficulty of tail gas absorption system also decrease to a certain extent; And reduced loss of material and unit consumption to greatest extent, also can not cause consequences such as water pollution, cost recovery also descends.
In the said rectifying column tail gas recycle of the utility model complete set of equipments, the vacuum condenser shell side is provided with circulating water intake and circulating water outlet, so just can utilize recirculated water to the condensation of lowering the temperature of the tail gas in the vacuum condenser tube side.In addition, vacuum condenser is the known technology in this area in the said technical scheme of the utility model, adopts conventional vacuum condenser can realize the said technical scheme of the utility model.
In the said rectifying column tail gas recycle of the utility model complete set of equipments; Vacuum condenser one end links to each other with rectifying column; The other end is connected as a single entity through flange and vacuum buffer tank; To what carry out gas-liquid separation through the condensed gas-liquid mixture of vacuum condenser is vacuum buffer tank, and vacuum buffer tank can also play stable vacuum, prevent that liquid from getting into the effect of vacuum unit except carrying out the gas-liquid separation; Vacuum buffer tank is the known technology in this area in the said technical scheme of the utility model, adopts conventional vacuum buffer tank can implement the present technique scheme.
In the said rectifying column tail gas recycle of the utility model complete set of equipments, the vacuum unit comprises multistage vacuum pump, in different processes, can start vavuum pump not at the same level as required.In the said technical scheme of the utility model; The vacuum unit is the oil-free vacuum unit; Comprise one-level oilless vacuum pump, secondary Roots vaccum pump and final stage Roots vaccum pump, the secondary Roots vaccum pump is connected with the final stage Roots vaccum pump with the one-level oilless vacuum pump respectively through flange; Oilless vacuum pump is a kind of oil-sealed rotary pump that any oil is done the lubricated work of can turning round that need not; It has simple in structure, processing ease, easy to maintenance, advantage such as do not pollute the environment; The oilless vacuum pump durability is good, is the dual-purpose vacuum pump that collection vacuumized and be compressed in one; Roots vaccum pump starts fast, and wasted work is few, and the during-operation service expense is low, and pumping speed is big, and efficient is high, and is insensitive to small amount of water vapor contained in the pumped gas and dust, and the big speed of exhaust is arranged in 100-1 handkerchief pressure limit, can get rid of the gas of emitting suddenly rapidly; In addition, preferred vacuum machine set technology parameter is in the utility model: one-level oil-free vacuum pump power is 11KW, and the speed of exhaust is 150L/s; Secondary Roots vaccum pump power is 3KW; The speed of exhaust is 150L/s, and final stage Roots vaccum pump power is 4KW, and the speed of exhaust is 300L/s.Therefore, utilize to comprise that the vacuum unit starting of one-level oilless vacuum pump, secondary Roots vaccum pump and final stage Roots vaccum pump is fast, wasted work is few, and is easy to maintenance, and pumping speed is big, and efficient is high, also can not pollute environment.
In the said rectifying column tail gas recycle of the utility model complete set of equipments, the condensate liquid receiving tank is used for that gas-liquid mixture is carried out secondary buffer to be separated; In the said technical scheme of the utility model, adopt the condensate liquid receiving tank of known routine just can implement the present technique scheme.
As a kind of improvement to the said technical scheme of the utility model; First pipe material that is used for connecting vacuum buffer tank gaseous phase outlet and vacuum unit is preferably the 20# steel; Cost is low durable again; And valve and bellows are installed, and bellows is to be installed between two first pipelines through flange on first pipeline; Valve that is adopted and bellows all are known technologies, can reduce pipeline causes weld cracking because of machine vibration risk effectively.
In the said rectifying column tail gas recycle of the utility model complete set of equipments, the material that second pipeline is taked is preferably PP (polypropylene), durable and cost easy to control.
Therefore the beneficial effect of the utility model has provided a kind of rectifying column tail gas recycle complete set of equipments; This tail gas recycle complete set of equipments can vacuumize and reclaim low organic oil phase that boils of being taken out of in the vacuum pipe; And can reduce loss of material and unit consumption to greatest extent; Alleviate the processing load and the difficulty of tail gas absorption system to a certain extent, also can not cause water pollution.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is the utility model rectifying column tail gas recycle The Application of Complete Equipment structural representation;
Existing that label declaration in the accompanying drawing is following: 1 is vacuum condenser, and 2 is vacuum buffer tank, and 3 is the vacuum unit, and 4 is the condensate liquid receiving tank, and 5 is rectifying column, and 6 is the tail gas absorption system, and 7 is the recirculated water feed source, and 8 is the recirculated water recover.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In the preferred embodiment of the utility model; As shown in Figure 1, said rectifying column tail gas recycle complete set of equipments comprises vacuum condenser 1, vacuum buffer tank 2, vacuum unit 3 and condensate liquid receiving tank 4, and vacuum condenser 1 shell side is provided with circulating water intake and circulating water outlet; Vacuum buffer tank 2 tops are provided with gaseous phase outlet; Its bottom also is provided with and drains mouth, and vacuum unit 3 is provided with discharge duct, and condensate liquid receiving tank 4 bottoms are provided with and drain valve; Vacuum condenser 1 one ends are connected with rectifying column 5; The other end is connected with vacuum buffer tank 2 through flange; The gaseous phase outlet at vacuum buffer tank 2 tops is connected in series through first pipeline and vacuum unit 3; Valve and bellows are installed on first pipeline, and bellows is to be installed between two first pipelines through flange, and discharge duct is connected in series through valve and second pipeline and condensate liquid receiving tank 4; Vacuum unit 3 comprises one-level oilless vacuum pump, secondary Roots vaccum pump and final stage Roots vaccum pump, and secondary Roots vaccum pump one end is connected with the one-level oilless vacuum pump through flange, and the other end is connected with the final stage Roots vaccum pump through flange.
The utility model operation principle is: start vacuum condenser 1; The circulating water intake valve and the circulating water outlet valve of vacuum condenser 1 are opened; Restart vacuum unit 3 one-level vavuum pumps, restart secondary Roots vaccum pump and final stage Roots vaccum pump as required.Treat that the tail gas in the rectifying column 5 enters into the tube side of vacuum condenser 1; Recirculated water in vacuum condenser 1 shell side will carry out condensation to the tail gas in the tube side; The lower boiling tail gas of a part becomes liquid state by gaseous state, and gaseous state separates with once cushioning in liquefied mixture gets into vacuum buffer tank 2 together, and the liquid of separating is stayed in the vacuum buffer tank 2; Mouthful discharge that drains from its bottom; The gaseous material of separating enters into first pipeline from the gaseous phase outlet at vacuum buffer tank 2 tops, and the discharge duct through vacuum unit 3 enters into condensate liquid receiving tank 4 to carry out secondary gas-liquid buffering and separate, and the gaseous material of separating through secondary gas-liquid buffering enters into tail gas absorption system 6 through pipeline; Liquid is still stayed in the condensate liquid receiving tank 4, discharges from the valve that drains of its bottom.
Claims (5)
1. a rectifying column tail gas recycle complete set of equipments is characterized in that, comprises vacuum condenser (1), vacuum buffer tank (2), vacuum unit (3) and condensate liquid receiving tank (4); Said vacuum condenser (1) one end links to each other with rectifying column (5), and the other end is connected with vacuum buffer tank (2); Said vacuum buffer tank (2) is connected in series through the gaseous phase outlet and the vacuum unit (3) at its top; Said vacuum unit (3) is provided with discharge duct, and said discharge duct and condensate liquid receiving tank (4) are connected in series.
2. rectifying column tail gas recycle complete set of equipments according to claim 1 is characterized in that said vacuum unit (3) is the oil-free vacuum unit, and said oil-free vacuum unit comprises one-level oilless vacuum pump, secondary Roots vaccum pump and final stage Roots vaccum pump; Said secondary Roots vaccum pump one end is connected with the one-level oilless vacuum pump, and the other end is connected with the final stage Roots vaccum pump.
3. rectifying column tail gas recycle complete set of equipments according to claim 1 is characterized in that, said gaseous phase outlet is connected in series through first pipeline and vacuum unit (3).
4. rectifying column tail gas recycle complete set of equipments according to claim 3 is characterized in that, on said first pipeline valve and bellows is installed.
5. rectifying column tail gas recycle complete set of equipments according to claim 1 is characterized in that, said discharge duct is connected in series through valve and second pipeline and condensate liquid receiving tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333840 CN202620765U (en) | 2012-07-10 | 2012-07-10 | Tail gas recovering complete equipment for rectifying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333840 CN202620765U (en) | 2012-07-10 | 2012-07-10 | Tail gas recovering complete equipment for rectifying tower |
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| Publication Number | Publication Date |
|---|---|
| CN202620765U true CN202620765U (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220333840 Expired - Lifetime CN202620765U (en) | 2012-07-10 | 2012-07-10 | Tail gas recovering complete equipment for rectifying tower |
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| CN (1) | CN202620765U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446842A (en) * | 2013-08-30 | 2013-12-18 | 张家港市三联化工科技有限公司 | Tail gas treatment device for MAQ-ME (R-(+)-2-(4-Hydroxyphenoxy) drying |
| CN103877829A (en) * | 2013-12-18 | 2014-06-25 | 西安近代化学研究所 | Method and device for absorbing tail gas from ethanediamine rectifying column |
| CN104096371A (en) * | 2013-04-03 | 2014-10-15 | 江苏创新石化有限公司 | Rectification vacuum-pumping system of desulfurizer device |
-
2012
- 2012-07-10 CN CN 201220333840 patent/CN202620765U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104096371A (en) * | 2013-04-03 | 2014-10-15 | 江苏创新石化有限公司 | Rectification vacuum-pumping system of desulfurizer device |
| CN103446842A (en) * | 2013-08-30 | 2013-12-18 | 张家港市三联化工科技有限公司 | Tail gas treatment device for MAQ-ME (R-(+)-2-(4-Hydroxyphenoxy) drying |
| CN103446842B (en) * | 2013-08-30 | 2016-01-20 | 张家港市三联化工科技有限公司 | For the exhaust gas processing device of MAQ-ME drying |
| CN103877829A (en) * | 2013-12-18 | 2014-06-25 | 西安近代化学研究所 | Method and device for absorbing tail gas from ethanediamine rectifying column |
| CN103877829B (en) * | 2013-12-18 | 2016-07-06 | 西安近代化学研究所 | The absorption process of ethylenediamine rectifying column tail gas and device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20121226 |