CN104841151A - Rectifier - Google Patents
Rectifier Download PDFInfo
- Publication number
- CN104841151A CN104841151A CN201410052251.4A CN201410052251A CN104841151A CN 104841151 A CN104841151 A CN 104841151A CN 201410052251 A CN201410052251 A CN 201410052251A CN 104841151 A CN104841151 A CN 104841151A
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- China
- Prior art keywords
- tube
- pipe
- acetic acid
- projections
- rectification
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention discloses a rectifier with characteristics of strong corrosion resistance and high acetic acid extraction rate. The rectifier comprises a rectification pipe and a cooling pipe, wherein the cooling pipe is arranged on the upper portion inside the rectification pipe, the lower portion of the rectification pipe is provided with a steam inlet, the rectification pipe wall made from quartz glass and positioned on the lower portion of the cooling pipe made from quartz glass is provided with projections recessing toward the middle of the rectification pipe, gaps are arranged among the projections, the projections comprise three projections arranged in the radial direction of each circle and five rows of the axially arranged projections, the gap between the projection top ends is opposite to the bottom portion of the cooling pipe, and the top portion of the rectification pipe is provided with a thermometer. According to the present invention, the rectification pipe and the cooling pipe are made from the quartz glass so as to provide advantages of high corrosion resistance, high transparency, and easy maintenance, and the rectification pipe wall is provided with the hollow projections so as to increase the contact area of the rectification pipe and the external air and effectively improve the acetic acid extraction rate.
Description
Technical field
The present invention relates to a kind of by the utensil of gas cooling liquid, particularly a kind of rectifier.
Background technology
The molecular formula of acetic acid is C
2h
4o
2, boiling point is 118.1 degree, and Chinese is acetic acid, and another name glacial acetic acid, belongs to the 8.1st class corrosives.The content produced with low pressure carbonylation method just can meet the requirement of GB1903-2008 " food additives glacial acetic acid " at the thick acetic acid of 97-98% after purifying.Thick acetic acid refers to the acetic acid containing impurity such as formic acid, acetic anhydride, nonvolatile matter, chloride, iron and heavy metals.Because the corrosivity of thick acetic acid is too strong, existing acetic acid purification device is mainly made with stainless steel material, main employing distillation, rectifying, condensation production technology, by impurity removals such as formic acid, acetic anhydride, nonvolatile matter, chloride, iron and heavy metals, utilize the boiling point of acetic acid and impurity, freezing point are different purifies.Rectifier in existing acetic acid purification device selects stainless steel material to make, and in Long-Time Service process, there will be corrosion in various degree, bring some inconvenience to plant maintenance.Rectifier includes bead tube, cooling tube, and cooling tube is located at inside bead tube, and water inlet pipe, the outlet pipe of cooling tube pass rectifying tube wall and be tightly connected in rectifying tube wall, are provided with gap between rectifying tube wall and cooling tube wall; During rectifying, enter from the air intake of side bottom bead tube containing thick acetic acid gas, contact with the cooling tube in rectifier or be reduced to below acetic acid set point from the acetic acid gas temperature close to cooling tube, this part acetic acid gas can condense into liquid and drop to bottom distillation cascade, discharge from the leakage fluid dram bottom distillation cascade, some acetic acid gas is discharged along with the venthole of other impurity gas from distillation cascade top, directly has influence on the recovery rate of acetic acid.
Summary of the invention
The technical problem that the present invention solves is to provide the rectifier that a kind of corrosion resistance is strong, can improve acetic acid recovery rate.
Technical scheme of the present invention completes like this, a kind of rectifier, include bead tube, cooling tube, cooling tube is located at top inside bead tube, bead tube bottom is provided with air intake, the rectifying tube wall be made up of quartz glass of the cooling tube bottom of being made up of quartz glass is provided with the projection of entering to bead tube middle concave, is provided with gap between projection.
Described protruding radial direction is equipped with three.
Described projection is axially arranged with five rows.
Gap between described protruding apex is relative with bottom cooling tube.
Bead tube top is provided with thermal detector.
Because this practical bead tube, cooling tube adopt quartz glass to make, there is very high corrosion resistance and transparency, be convenient to plant maintenance.Rectifying tube wall is provided with the projection of hollow shape, increase bead tube and bound air contact area, be conducive to cooling, acetic acid gas is subject to convex barrier and reduces its rate of climb in uphill process, also part acetic acid gas can be made to be condensed into solid, again through cooling tube cooling, thus can effectively improve acetic acid recovery rate.Bead tube top gas temperature can be detected in time by the thermal detector at bead tube top, make distillation cascade top gas temperature control below 102-115 degree by the water velocity in adjustment cooling tube, improve acetic acid recovery rate further.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A generalized section of Fig. 1.
Detailed description of the invention
The present invention is described in more detail by reference to the accompanying drawings, rectifier includes the bead tube 6 be made up of quartz glass, the cooling tube 3 be made up of quartz glass, cooling tube 3 is located at top inside bead tube 6, water inlet pipe 9, the outlet pipe 2 of cooling tube 3 pass rectifying tube wall and are tightly connected in rectifying tube wall, are provided with gap between rectifying tube wall and cooling tube wall; Air intake 10 when side is provided with bottom bead tube 6, venthole 1 is located at bead tube top, and leakage fluid dram 7 is established bottom bead tube; The rectifying tube wall of cooling tube bottom is provided with the projection 4 of entering to bead tube middle concave, is provided with gap between protruding 4.
For improving cooling and stopping the gas rate of climb, protruding 4 radial directions are equipped with three.
For improving cooling and stopping the gas rate of climb, described protruding 4 are axially arranged with and have five rows.
For improving cooling effect, the gap between protruding 4 tops is relative with bottom cooling tube.
Improve cooling effect for increasing gas and outside air mediate contact area, protruding 4 inside and air contact portion 5 are set to hollow shape.
For bead tube top gas temperature can better be controlled, thermal detector 8 is set at bead tube top.
Add man-hour, acetic acid gas enters in bead tube 6 by air intake 10, and in uphill process, acetic acid gas is subject to protruding 4 and stops its rate of climb of reduction, and acetic acid gas is condensed into liquid and drops to bottom bead tube 6 under the cooling effect of protruding 4; The acetic acid gas continuing to rise, again after cooling tube 3 cools, is condensed into liquid and drops to bottom bead tube 6, and the acetic acid dropped to bottom bead tube 6 discharges the acetic acid after being purification by leakage fluid dram 7; The waste vapour rising to bead tube top is discharged through venthole, recycles further.
The present invention is also applicable to other gas cooling liquid.
Claims (6)
1. a rectifier, include bead tube, cooling tube, cooling tube is located at top inside bead tube, bead tube bottom is provided with air intake, it is characterized in that: the rectifying tube wall be made up of quartz glass of the cooling tube bottom of being made up of quartz glass is provided with the projection of entering to bead tube middle concave, is provided with gap between projection.
2. a kind of rectifier according to claim 1, is characterized in that: described protruding radial direction is equipped with three.
3. a kind of rectifier according to claim 2, is characterized in that: described projection is axially arranged with five rows.
4. a kind of rectifier according to claim 3, is characterized in that: the gap between described protruding apex is relative with bottom cooling tube.
5. a kind of rectifier according to claim 1 or 2 or 3 or 4, is characterized in that: described lobed interior and air contact portion are set to hollow shape.
6. a kind of rectifier according to claim 5, is characterized in that: bead tube top is provided with thermal detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052251.4A CN104841151A (en) | 2014-02-17 | 2014-02-17 | Rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052251.4A CN104841151A (en) | 2014-02-17 | 2014-02-17 | Rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104841151A true CN104841151A (en) | 2015-08-19 |
Family
ID=53841369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410052251.4A Pending CN104841151A (en) | 2014-02-17 | 2014-02-17 | Rectifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104841151A (en) |
-
2014
- 2014-02-17 CN CN201410052251.4A patent/CN104841151A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150819 |