CN107158733B - A kind of acetic acid rectifying column of good separating effect - Google Patents
A kind of acetic acid rectifying column of good separating effect Download PDFInfo
- Publication number
- CN107158733B CN107158733B CN201710418857.9A CN201710418857A CN107158733B CN 107158733 B CN107158733 B CN 107158733B CN 201710418857 A CN201710418857 A CN 201710418857A CN 107158733 B CN107158733 B CN 107158733B
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- China
- Prior art keywords
- plate
- tower reactor
- acetic acid
- cavity
- column
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 title claims abstract description 132
- 230000000694 effects Effects 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 238000010992 reflux Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000000926 separation method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of acetic acid rectifying columns of good separating effect.Rectifying column includes tower reactor, column plate and downspout are provided in the tower reactor, liquid outlet is provided with below the tower reactor, the liquid outlet is connected with reboiler, the reboiler is connected by refluxing opening with tower reactor, the bottom plate parallel with column plate and the demarcation plate vertical with column plate is provided in the tower reactor, column plate one end of bottom is connected with downspout in tower reactor, the bottom plate and demarcation plate are connected with downspout, are additionally provided with through-hole on the bottom plate.Rectifying tower structure of the invention is simple, good separating effect；Tower reactor is divided into completely isolated two parts by demarcation plate, it is not directly contacted with the acetic acid in the first cavity and the second cavity, acetic acid in second cavity fully enters reboiler, the component for being originally used for being kept completely separate separates again, make acetic acid carry out second to separate, separative efficiency is bigger, and the purity of the acetic acid of acquisition is higher.
Description
Technical field
The present invention relates to a kind of acetic acid rectifying columns of good separating effect, belong to chemical equipment technical field.
Background technique
Acetic acid rectifying column is the equipment that a kind of pair of acetic acid is purified.Tower reactor structure has important shadow to the purity of acetic acid
It rings.In order to keep the purity of acetic acid higher, wish to be all introduced into reboiler from the liquid that bottom column plate flows down in distillation process
In, the secondary separation of acetic acid is realized by reboiler, and the acetic acid of secondary separation is not being contacted into the acetic acid of first separation
On the basis of all produce.
Although existing rectifying column is improved the purity of part acetic acid by the centrifugation of reboiler, because
Acetic acid to get off from bottom column plate directly mixes in tower reactor with the acetic acid of the vapour-liquid reflux inlet from reboiler, so that former
The purity for the acetic acid that this purity is improved reduces again.
The tower reactor of 102166425 A of Chinese patent CN, bottom column plate liquid guiding tube upper end are connected to bottom downspout bottom
At the hole of plate, hole is closed, lower end is placed in above the liquid outlet of reboiler, and is kept at a distance with outlet, is invented
Rectifying column, it is ensured that the highest bottom column plate liquid of concentration containing volatile components fully enters reboiler, avoids in tower reactor
Interior delay.But the size of guiding tube itself is subject to certain restrictions, particularly with middle-size and small-size rectifying column, in addition can because
Grain and block.
Utility model content
For overcome the deficiencies in the prior art, the present invention provides a kind of acetic acid rectifying columns of good separating effect.
The present invention is achieved through the following technical solutions:
A kind of acetic acid rectifying column of good separating effect, including tower reactor are provided with column plate and downspout in the tower reactor, described
Liquid outlet is provided with below tower reactor, the liquid outlet is connected with reboiler, and the reboiler passes through refluxing opening and tower reactor phase
Even, characterized in that the bottom plate parallel with column plate and the demarcation plate vertical with column plate are provided in the tower reactor, bottom in tower reactor
Column plate one end is connected with downspout, and the bottom plate and demarcation plate are connected with downspout, is additionally provided with through-hole on the bottom plate.
A kind of acetic acid rectifying column of good separating effect offers multiple through-hole devices on the demarcation plate, described
Through-hole device includes the large cylindrical cylindrical second part of first part and roundlet, is provided with screw thread in the first part, institute
It states and steel ball is installed in second part, the steel ball is connected with spring, and the first part is screwed into a bolt, the spring spiral shell
Bolt is withstood.
A kind of acetic acid rectifying column of good separating effect equally offers multiple through-hole devices on the column plate.
A kind of acetic acid rectifying column of good separating effect, the demarcation plate, downspout, column plate and bottom plate divide tower reactor
At the first cavity and the second cavity, the liquid outlet is located at the lower section of the second cavity, is provided with below first cavity
Raffinate outlet.
A kind of acetic acid rectifying column of good separating effect, one holding vessel of the raffinate outlet connection.
A kind of acetic acid rectifying column of good separating effect, the raffinate exit are additionally provided with the first regulating valve.
A kind of acetic acid rectifying column of good separating effect, the liquid outlet are additionally provided with the second regulating valve.
Advantageous effects of the invention:
(1) by changing the quantity of through-hole, it can control the flow of whereabouts liquid, so as to adjust the liquid for removing reboiler
Flow；
(2) tower reactor is divided into completely isolated two parts by demarcation plate, is not directly contacted with two intracavitary acetic acid, because point
The effect of partition, the acetic acid in right chamber fully enter reboiler, and the component not being kept completely separate originally separates again, carry out acetic acid
Second of separation, separative efficiency is bigger, and the purity of the acetic acid of acquisition is higher；
(3) column plate uses through-hole device, which can guarantee gas only export but no import, avoid air-teturning mixed phenomenon, while liquid
Body is not fallen directly in the first cavity, and flowing stroke is long, separates more abundant；
(4) partition uses through-hole device, guarantees there is enough liquid always in the second cavity, so that reboiler be made to have enough
Motive force establishes stable tower bottom gas phase reflux, efficiently avoids dry kettle phenomenon；
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of bottom plate.
Fig. 3 be I in Fig. 1 at enlarged structure schematic diagram.
Fig. 4 be II in Fig. 1 at enlarged structure schematic diagram.
In figure: 1, tower reactor, the 11, first cavity, the 12, second cavity, 2, liquid outlet, the 21, second regulating valve, 3, boil again
Device, 4, refluxing opening, 5, bottom plate, 51, through-hole, 6, demarcation plate, 7, column plate, 8, downspout, 9, raffinate outlet, the 91, first regulating valve,
10, holding vessel, 13, first part, 14, second part, 15, steel ball, 16, spring, 17, bolt.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown, Fig. 1, in 2, upward arrow indicates the flow direction of gas, remaining indicates the flowing side of liquid
To；A kind of acetic acid rectifying column of good separating effect of the invention, including tower reactor 1 are provided with column plate and descending liquid in the tower reactor 1
It manages, is provided with liquid outlet 2 below the tower reactor 1, the liquid outlet 2 is connected with reboiler 3, and the reboiler 3 passes through back
Head piece 4 is connected with tower reactor 1, and the bottom plate 5 parallel with column plate and the demarcation plate 6 vertical with column plate, tower reactor are provided in the tower reactor 1
7 one end of column plate of bottom is connected with downspout 8 in 1, and the bottom plate 5 and demarcation plate 6 are connected with downspout 8, on the bottom plate 5
It is additionally provided with through-hole 51.The bottom plate 5 and downspout 8 are welded together；Demarcation plate 6 is welded together with downspout 8.
Tower reactor 1 is divided into the first cavity 11 and the second cavity 12, institute by the demarcation plate 6, downspout 8, column plate 7 and bottom plate 5
The lower section that liquid outlet 2 is located at the second cavity 12 is stated, the lower section of first cavity 11 is provided with raffinate outlet 9.The raffinate
9 one holding vessel 10 of connection of outlet.
As shown in figure 4, offering multiple through-hole devices on the demarcation plate 6, the through-hole device includes large cylindrical
First part 13 and roundlet cylindrical second part 14 are provided with screw thread, peace in the second part 14 in the first part 13
Equipped with steel ball 15, the steel ball 15 is connected with spring 16, and the first part 13 is screwed into a bolt 17, and the spring 16 uses bolt
17 withstand.Through-hole device on demarcation plate 6, first part 13 are arranged towards the second cavity 12.
Further, multiple through-hole devices are equally offered on the column plate 7, the through-hole device on column plate 7, first
Points 13, towards being arranged above tower reactor 1, are arranged, gas moves up, and steel ball 15 is jacked up, hence into tower reactor 1, but not by this
It can be returned to out of tower reactor 1 in first cavity 11, avoid air-teturning mixed phenomenon.
Further, the first regulating valve 91 is additionally provided at the raffinate outlet 9.It is also set up at the liquid outlet 2
There is the second regulating valve 21.
Acetic acid rectifying column of the invention when in use, by the liquid flooding on column plate 7 enter after bottom downspout 8 all into
Enter bottom bottom plate 5, is then all flowed into the second cavity 12 by the through-hole of bottom bottom plate 5 51, due to the siphon of reboiler 3
It acts on, the liquid in the second cavity 12 is by going the liquid outlet 2 of reboiler 3 to be inhaled into reboiler 3, the vapour-liquid from reboiler
The steam of reflux inlet 4 sends the stripping section of rectifying column back to, and liquid is fallen into the first cavity 11, the liquid in such first cavity 11
It all is from the vapour-liquid reflux inlet 4 of reboiler, leaves, is stored into holding vessel 10 from raffinate outlet 9 as finished product.By changing
The quantity for becoming the through-hole 51 of bottom bottom plate 5 can control the flow for flowing into the liquid of the second cavity 12, control the second regulating valve
21, the adjustable flow into liquid in reboiler 3 controls the first regulating valve 91, the storage and separation of liquid may be implemented.
The high-temperature gas of gas-liquid reflux inlet 4 from reboiler is entered in the stripping section of upper layer by the hole of column plate 7, when the pressure of gas
When sufficiently large, the steel ball 15 on demarcation plate is opened, and high-temperature gas is flowed out from the hole of bolt 17, realizes 7 or more acetic acid of column plate
Separation.When gas pressure becomes smaller, steel ball 15 is shot back in aperture, blocks aperture, prevents acetic acid from falling into the first cavity 11, from
And influence the purity of acetic acid.When the pressure in the first cavity 11 is greater than the pressure in the second cavity 12, steel ball 15 is opened, the
Acetic acid in one cavity 11 flows in the second cavity 12, makes have enough acetic acid always in the second cavity 12, to guarantee again
Boiling device 3 has enough motive forces, establishes stable tower bottom gas phase reflux, when the pressure in the second cavity 12 is greater than in the first cavity 11
Pressure when, steel ball 15 is shot back, and is avoided the acetic acid in the second cavity 12 and is flowed to the first cavity 11, influences the purity of acetic acid.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of acetic acid rectifying column of good separating effect, including tower reactor, column plate and downspout, the tower are provided in the tower reactor
Liquid outlet is provided with below kettle, the liquid outlet is connected with reboiler, and the reboiler is connected by refluxing opening with tower reactor,
It is characterized in that the bottom plate parallel with column plate and the demarcation plate vertical with column plate are provided in the tower reactor, the tower of bottom in tower reactor
Plate one end is connected with downspout, and the bottom plate and demarcation plate are connected with downspout, is additionally provided with through-hole on the bottom plate；It is described
Tower reactor is divided into the first cavity and the second cavity by demarcation plate, downspout, column plate and bottom plate, wherein demarcation plate and descending liquid in tower reactor
The side of pipe, the lower section of bottom column plate form first cavity, in tower reactor under the other side of demarcation plate and downspout, bottom plate
Rectangular at second cavity, the liquid outlet is located at the lower section of the second cavity, is provided with below first cavity residual
Liquid outlet, the refluxing opening setting offer multiple through-hole devices on the first cavity side, the demarcation plate and bottom column plate,
The through-hole device includes the large cylindrical cylindrical second part of first part and roundlet, is provided with spiral shell in the first part
Line is equipped with steel ball in the second part, and the steel ball is connected with spring, and the first part is screwed into a bolt, the bullet
Spring is withstood with bolt, and the first part of the through-hole device on demarcation plate is arranged towards the second cavity, the through-hole dress on bottom column plate
The first part set is arranged towards tower reactor top.
2. a kind of acetic acid rectifying column of good separating effect according to claim 1, characterized in that raffinate outlet connection
One holding vessel.
3. a kind of acetic acid rectifying column of good separating effect according to claim 1, characterized in that the raffinate exit is also
It is provided with the first regulating valve.
4. a kind of acetic acid rectifying column of good separating effect according to claim 1, characterized in that the liquid outlet is also
It is provided with the second regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418857.9A CN107158733B (en) | 2017-06-06 | 2017-06-06 | A kind of acetic acid rectifying column of good separating effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418857.9A CN107158733B (en) | 2017-06-06 | 2017-06-06 | A kind of acetic acid rectifying column of good separating effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107158733A CN107158733A (en) | 2017-09-15 |
| CN107158733B true CN107158733B (en) | 2019-11-08 |
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ID=59826115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710418857.9A Active CN107158733B (en) | 2017-06-06 | 2017-06-06 | A kind of acetic acid rectifying column of good separating effect |
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| Country | Link |
|---|---|
| CN (1) | CN107158733B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110980670A (en) * | 2019-10-28 | 2020-04-10 | 宿州伊维特新材料有限公司 | Rectification method of high-purity nitrous oxide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629534A (en) * | 1985-04-12 | 1986-12-16 | Phillips Petroleum Company | Fractional distillation apparatus and method |
| CN1395976A (en) * | 2002-08-19 | 2003-02-12 | 蓝仁水 | Tower plate with defrosting guide structure and no back mix |
| CN103432763A (en) * | 2013-08-29 | 2013-12-11 | 天津大学 | Rectification tower and thermosyphon reboiler configuration method |
-
2017
- 2017-06-06 CN CN201710418857.9A patent/CN107158733B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4629534A (en) * | 1985-04-12 | 1986-12-16 | Phillips Petroleum Company | Fractional distillation apparatus and method |
| CN1395976A (en) * | 2002-08-19 | 2003-02-12 | 蓝仁水 | Tower plate with defrosting guide structure and no back mix |
| CN103432763A (en) * | 2013-08-29 | 2013-12-11 | 天津大学 | Rectification tower and thermosyphon reboiler configuration method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107158733A (en) | 2017-09-15 |
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Effective date of registration: 20200703 Address after: 223022 No. 40 Chengxi Road, Huai'an City, Jiangsu Province Patentee after: JIANGSU KESHENG CHEMICAL MACHINERY Co.,Ltd. Address before: 223003 Huaian city of Jiangsu Province, while the road No. 1 Patentee before: HUAIYIN INSTITUTE OF TECHNOLOGY |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 223022 No.40, Chengxi Road, Huai'an City, Jiangsu Province Patentee after: Jiangsu Kesheng Intelligent Equipment Co.,Ltd. Country or region after: China Address before: 223022 No.40, Chengxi Road, Huai'an City, Jiangsu Province Patentee before: JIANGSU KESHENG CHEMICAL MACHINERY Co.,Ltd. Country or region before: China |