CN217367200U - Three-effect recovery device for solving reboiler scaling in alcohol recovery - Google Patents
Three-effect recovery device for solving reboiler scaling in alcohol recovery Download PDFInfo
- Publication number
- CN217367200U CN217367200U CN202221137800.4U CN202221137800U CN217367200U CN 217367200 U CN217367200 U CN 217367200U CN 202221137800 U CN202221137800 U CN 202221137800U CN 217367200 U CN217367200 U CN 217367200U
- Authority
- CN
- China
- Prior art keywords
- tower
- pressure recovery
- recovery tower
- negative pressure
- pressure
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a triple-effect recovery device for solving the scale formation of a reboiler in alcohol recovery, which comprises a raw material tank, a high-pressure recovery tower, a normal-pressure recovery tower and a negative-pressure recovery tower which are connected in sequence; the high-pressure recovery tower, the normal-pressure recovery tower and the negative-pressure recovery tower are respectively connected with a finished product cooler; the bottom of the high-pressure recovery tower is connected with the middle part of the normal-pressure recovery tower; the bottom of the normal pressure recovery tower is connected with the middle part of the negative pressure recovery tower; the bottom of the negative pressure recovery tower is communicated with the outside. The utility model discloses a device loops through high pressure recovery tower, ordinary pressure recovery tower, negative pressure recovery tower and realizes that the heat utilizes step by step, and high pressure recovery tower's temperature is the highest. Finally, the produced wastewater is discharged from the negative pressure recovery tower with lower temperature, so that the reboiler of the negative pressure tower is not easy to coke and scale.
Description
Technical Field
The utility model relates to an alcohol recovery technical field, concretely relates to a triple effect recovery unit for solving reboiler scale deposit in alcohol recovery.
Background
The alcohol recovery is suitable for recovering light alcohol from waste water or waste liquid produced in pharmaceutical, food, light industry, chemical industry and other industries. The operating principle of the alcohol recovery tower utilizes the principle that the boiling point of alcohol is lower than the boiling point of other solutions, and the temperature slightly higher than the boiling point of alcohol is used for heating and volatilizing the dilute alcohol solution to be recovered, and after the rectification of the tower body, pure alcohol gas is separated out, so that the concentration of the alcohol solution is improved, the purpose of recovering alcohol is achieved, and the cost of alcohol production can be reduced.
The alcohol triple-effect recovery generally refers to the recovery of light alcohol (raw material alcohol) in waste water or waste liquid by a combination of a high-pressure recovery tower, a normal-pressure recovery tower and a negative-pressure recovery tower. Preheating raw material alcohol by a preheater, then sending the raw material alcohol to a negative pressure recovery tower, sending light alcohol in a tower kettle of the negative pressure tower to an atmospheric tower by a feeding pump, sending light alcohol in the tower kettle of the atmospheric recovery tower to a high pressure recovery tower by the feeding pump, then taking finished products in the three towers at the same time, and discharging waste liquid in the tower kettle of the high pressure recovery tower. The process is suitable for clean waste alcohol raw materials, but is not suitable for raw materials containing impurities, easy to crystallize and more colloid. The tower bottom operating temperature of a high-pressure recovery tower is usually above 130 ℃, and at the high temperature, a heat exchange pipe of a reboiler of the high-pressure recovery tower is easy to coke and scale, so that the heat exchange effect is influenced, the production capacity is reduced, and the heat exchange pipe needs to be cleaned, so that the production line is stopped, and the production continuity is influenced. Therefore, a three-effect alcohol recovery device for solving the scaling of the reboiler is needed to solve the scaling problem of the heat exchange tube of the reboiler and improve the production capacity of the three-effect alcohol recovery device.
SUMMERY OF THE UTILITY MODEL
To the above prior art, the utility model aims at providing a triple effect recovery unit for solving reboiler scale deposit among the alcohol recovery. The device passes through high-pressure recovery tower, ordinary pressure recovery tower, negative pressure recovery tower in proper order and realizes that the heat utilizes step by step, and high-pressure recovery tower's temperature is the highest. Finally, the produced wastewater is discharged from the negative pressure recovery tower with lower temperature, so that the reboiler of the negative pressure tower is not easy to coke and scale.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a triple-effect recovery device for solving the scale formation of a reboiler in alcohol recovery, which comprises a raw material tank, a high-pressure recovery tower, a normal-pressure recovery tower and a negative-pressure recovery tower which are connected in sequence;
the high-pressure recovery tower, the normal-pressure recovery tower and the negative-pressure recovery tower are respectively connected with a finished product cooler;
the bottom of the high-pressure recovery tower is connected with the middle part of the normal-pressure recovery tower; the bottom of the normal pressure recovery tower is connected with the middle part of the negative pressure recovery tower; the bottom of the negative pressure recovery tower is communicated with the outside.
Preferably, the raw material tank is connected with the middle part of the high-pressure recovery tower sequentially through a raw material I-stage preheater and a raw material II-stage preheater.
Preferably, the bottom of the high-pressure recovery tower is respectively connected with the middle parts of a high-pressure tower reboiler and an atmospheric recovery tower; and the high-pressure tower reboiler is connected with the feed II-stage preheater.
Preferably, the top of the high-pressure recovery tower is sequentially connected with an atmospheric tower reboiler, a high-pressure tower reflux tank and a high-pressure tower reflux pump; and the high-pressure tower reflux pump is respectively connected with the top of the high-pressure recovery tower and the finished product cooler.
Preferably, the bottom of the atmospheric recovery column is connected to the middle of the atmospheric reboiler and the negative pressure recovery column, respectively.
Preferably, the top of the atmospheric recovery tower is sequentially connected with a negative pressure tower reboiler, an atmospheric tower reflux tank and an atmospheric tower reflux pump; and the return pump of the atmospheric tower is respectively connected with the top of the atmospheric recovery tower and the finished product cooler.
Preferably, the bottom of the negative pressure recovery tower is also connected with a negative pressure tower reboiler.
Preferably, the top of the negative pressure recovery tower is sequentially connected with a raw material I-stage preheater, a negative pressure tower reflux tank and a negative pressure tower reflux pump; and the negative pressure tower reflux pump is respectively connected with the top of the negative pressure recovery tower and the finished product cooler.
Preferably, the raw material I-stage preheater is also sequentially connected with a negative pressure tower condenser group and a vacuum pump.
Preferably, the negative pressure tower condenser group is also connected with a negative pressure tower reflux tank.
The utility model has the advantages that:
alcohol triple-effect recovery is generally performed by sequentially passing alcohol through a negative pressure recovery tower, a normal pressure recovery tower and a high pressure recovery tower, and finally wastewater is discharged from the bottom of the high pressure recovery tower, but the temperature of the bottom of the high pressure recovery tower is higher, and at the high temperature, a heat exchange tube of a reboiler of the high pressure recovery tower is easy to coke and scale. The utility model discloses an adjustment raw materials feeding order is that the raw materials loops through high-pressure recovery tower, ordinary pressure recovery tower, negative pressure recovery tower, and the waste water that produces simultaneously all discharges at the bottom of the lower negative pressure recovery tower of temperature, and waste water temperature is about 80 ℃, can not make the scale deposit of negative pressure tower reboiler. Thereby solving the problem of scale formation of the triple-effect alcohol recovery reboiler.
Drawings
FIG. 1: the structure of the device of the utility model is shown schematically;
shown in the figure: 1-raw material tank, 2-high pressure recovery tower, 3-atmospheric pressure recovery tower, 4-negative pressure recovery tower, 5-finished product cooler, 6-raw material I-stage preheater, 7-raw material II-stage preheater, 8-high pressure tower reboiler, 9-high pressure tower reflux tank, 10-high pressure tower reflux pump, 11-atmospheric pressure tower reboiler, 12-atmospheric pressure tower reflux tank, 13-atmospheric pressure tower reflux pump, 14-negative pressure tower reboiler, 15-negative pressure tower reflux tank, 16-negative pressure tower reflux pump, 17-negative pressure tower condenser group and 18-vacuum pump.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
As shown in fig. 1, the utility model provides a triple-effect recovery device for solving reboiler scaling in alcohol recovery, which comprises a raw material tank 1, a high pressure recovery tower 2, an atmospheric pressure recovery tower 3 and a negative pressure recovery tower 4 which are connected in sequence;
the high-pressure recovery tower 2, the normal-pressure recovery tower 3 and the negative-pressure recovery tower 4 are respectively connected with a finished product cooler 5;
the bottom of the high-pressure recovery tower 2 is connected with the middle part of the normal-pressure recovery tower 3; the bottom of the normal pressure recovery tower 3 is connected with the middle part of the negative pressure recovery tower 4; the bottom of the negative pressure recovery tower 4 is communicated with the outside.
The raw material tank 1 is connected with the middle part of the high-pressure recovery tower 2 sequentially through a raw material I-stage preheater 6 and a raw material II-stage preheater 7. The bottom of the high-pressure recovery tower 2 is respectively connected with a high-pressure tower reboiler 8 and the middle part of the normal-pressure recovery tower 3; the high pressure column reboiler 8 is connected to the feed ii stage preheater 7. The top of the high-pressure recovery tower 2 is sequentially connected with an atmospheric tower reboiler 11, a high-pressure tower reflux tank 9 and a high-pressure tower reflux pump 10; and the high-pressure tower reflux pump 10 is respectively connected with the top of the high-pressure recovery tower 2 and the finished product cooler 5. The bottom of the atmospheric recovery tower 3 is respectively connected with the middle parts of an atmospheric tower reboiler 11 and a negative pressure recovery tower 4. The top of the atmospheric recovery tower 3 is sequentially connected with a negative pressure tower reboiler 14, an atmospheric tower reflux tank 12 and an atmospheric tower reflux pump 13; and the atmospheric tower reflux pump 13 is respectively connected with the top of the atmospheric recovery tower 3 and the finished product cooler 5. The bottom of the negative pressure recovery tower 4 is also connected with a negative pressure tower reboiler 14. The top of the negative pressure recovery tower 4 is sequentially connected with a raw material I-stage preheater 6, a negative pressure tower reflux tank 15 and a negative pressure tower reflux pump 16; the negative pressure tower reflux pump 16 is respectively connected with the top of the negative pressure recovery tower 4 and the finished product cooler 5. The raw material I-stage preheater 6 is also sequentially connected with a negative pressure tower condenser group 17 and a vacuum pump 18. The negative pressure tower condenser group 17 is also connected with the negative pressure tower reflux tank 15.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments.
The test materials used in the embodiment of the utility model are the conventional test materials in the field, and can be purchased through commercial channels.
Examples
Raw materials get into I level preheater of raw materials (preheat for I level preheater of raw materials by negative pressure tower top of the tower gas), II level preheater of raw materials (heat for II level preheater of raw materials by high-pressure tower reboiler condensate water), get into the middle part of high pressure recovery tower, from above the feed plate, alcohol is constantly concentrated, high concentration alcohol steam gets into the atmospheric tower reboiler by the top of high pressure recovery tower, give the heat source for the atmospheric recovery tower when high concentration alcohol steam condenses, the alcohol after the condensation converges the high-pressure tower reflux tank, send into a part of alcohol by the high-pressure tower backwash pump high-pressure tower top as the backward flow, another part takes out as the finished product, send to the finished product cooler.
From below the high-pressure column feed plate, alcohol concentration constantly reduces, the light alcohol at the bottom of the high-pressure column directly gets into the atmospheric tower middle part under the effect of pressure differential, from above the atmospheric tower feed plate, alcohol is constantly concentrated, high concentration alcohol steam gets into the negative pressure column reboiler by the top of the tower, give the heat source for the negative pressure recovery tower in the time of the condensation, alcohol after the condensation collects the atmospheric recovery tower reflux tank, send into partly alcohol by the atmospheric tower reflux pump atmospheric tower top as the backward flow, another part takes out as the finished product, send to the finished product cooler.
Alcohol concentration continuously reduces from below the atmospheric tower feed plate, the light alcohol at the bottom of the atmospheric tower directly gets into the negative pressure tower middle part under the effect of pressure differential, alcohol is constantly concentrated from above the negative pressure tower feed plate, high concentration alcohol steam gets into I level preheater of raw materials by the top of the tower, negative pressure tower condenser group condenses, alcohol after the condensation flows to negative pressure tower reflux drum certainly, through negative pressure tower reflux pump with partly alcohol deliver to the top of the negative pressure tower backward flow, partly alcohol takes out as the finished product, deliver to the condensation of finished product cooler.
The alcohol concentration is continuously reduced from the lower part of the feeding plate of the negative pressure recovery tower until the alcohol content in the wastewater at the bottom of the tower is not more than five ten-thousandth, and the wastewater is discharged from the bottom of the negative pressure recovery tower.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The three-effect recovery device for solving the problem of scale formation of the reboiler in alcohol recovery is characterized by comprising a raw material tank, a high-pressure recovery tower, a normal-pressure recovery tower and a negative-pressure recovery tower which are sequentially connected;
the high-pressure recovery tower, the normal-pressure recovery tower and the negative-pressure recovery tower are respectively connected with a finished product cooler;
the bottom of the high-pressure recovery tower is connected with the middle part of the normal-pressure recovery tower; the bottom of the normal pressure recovery tower is connected with the middle part of the negative pressure recovery tower; the bottom of the negative pressure recovery tower is communicated with the outside.
2. The apparatus of claim 1, wherein the feed tank is connected to the middle of the high pressure recovery column sequentially through a feed I stage preheater and a feed ii stage preheater.
3. The apparatus of claim 2, wherein the bottom of the high pressure recovery column is connected to the high pressure column reboiler and the middle of the atmospheric recovery column, respectively; and the high-pressure tower reboiler is connected with the feed II-stage preheater.
4. The device of claim 1, wherein the top of the high pressure recovery column is connected with an atmospheric column reboiler, a high pressure column reflux tank and a high pressure column reflux pump in sequence; and the high-pressure tower reflux pump is respectively connected with the top of the high-pressure recovery tower and the finished product cooler.
5. The apparatus of claim 1, wherein the bottom of the atmospheric recovery column is connected to the atmospheric column reboiler and the mid-section of the negative pressure recovery column, respectively.
6. The device of claim 5, wherein the top of the atmospheric recovery tower is connected with a negative pressure tower reboiler, an atmospheric tower reflux tank and an atmospheric tower reflux pump in sequence; and the return pump of the atmospheric tower is respectively connected with the top of the atmospheric recovery tower and the finished product cooler.
7. The apparatus of claim 1, wherein the bottom of the negative pressure recovery column is further connected to a negative pressure column reboiler.
8. The device of claim 1, wherein the top of the negative pressure recovery tower is connected with a raw material I-stage preheater, a negative pressure tower reflux tank and a negative pressure tower reflux pump in sequence; and the negative pressure tower reflux pump is respectively connected with the top of the negative pressure recovery tower and the finished product cooler.
9. The apparatus of claim 8, wherein the feed I stage preheater is further connected to a bank of negative pressure column condensers and a vacuum pump in sequence.
10. The apparatus of claim 9, wherein the bank of negative pressure column condensers is further connected to a negative pressure column reflux drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221137800.4U CN217367200U (en) | 2022-05-13 | 2022-05-13 | Three-effect recovery device for solving reboiler scaling in alcohol recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221137800.4U CN217367200U (en) | 2022-05-13 | 2022-05-13 | Three-effect recovery device for solving reboiler scaling in alcohol recovery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217367200U true CN217367200U (en) | 2022-09-06 |
Family
ID=83085501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221137800.4U Active CN217367200U (en) | 2022-05-13 | 2022-05-13 | Three-effect recovery device for solving reboiler scaling in alcohol recovery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217367200U (en) |
-
2022
- 2022-05-13 CN CN202221137800.4U patent/CN217367200U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100453137C (en) | Alcohol quinque-towel differential pressure distilling arrangement and technique thereof | |
| CN109319998B (en) | Near-zero emission treatment system and process for ternary precursor material production wastewater | |
| WO2021213552A1 (en) | Multi-column differential pressure energy-saving anhydrous alcohol distillation system and anhydrous alcohol energy-saving production method | |
| CN105693467B (en) | A kind of pentaerythrite energy-saving production method | |
| CN110404285A (en) | Four column distillations and UF membrane integrated system and its method for distilling ethyl alcohol | |
| CN107413194A (en) | Preparation method and equipment of concentrated ammonia water for desulfurization and denitrification | |
| CN217367200U (en) | Three-effect recovery device for solving reboiler scaling in alcohol recovery | |
| CN1214272A (en) | Continuous stirring vacuum sodium sulfate crystallization technology | |
| CN217163255U (en) | A rectification equipment that is arranged in N-methylaniline production methyl alcohol to retrieve | |
| CN104844420A (en) | Continuous treatment process and device of neopentyl glycol condensed washing mother liquor | |
| CN110510579A (en) | A kind of device and technique parsing separating hydrogen chloride and water from hydrochloric acid | |
| CN116282282A (en) | MVR evaporation system for wheat starch process wastewater | |
| CN112852597B (en) | Recovery equipment and method for nutrient salt generated by fermentation of ferroalloy industrial tail gas | |
| CN211896157U (en) | Nitric acid wastewater treatment system containing aluminum nitrate | |
| CN211963173U (en) | Carbon dioxide removing device for mash | |
| CN113426151A (en) | Device and method for solvent DMSO rectification recovery process in carbon fiber production process | |
| CN210314061U (en) | Rectification and purification device for synthesizing dimethyl oxalate by carbonylation of coal-made ethylene glycol | |
| CN108371827B (en) | Dimethylacetamide recovery rectifying device and process thereof | |
| CN113800700A (en) | High-efficient waste liquid ammonia still | |
| CN211004598U (en) | Continuous quality-separating crystallization and purification device for sodium chloride and ammonium chloride in industrial mixed salt wastewater | |
| CN106277115A (en) | A kind of saline sewage crystallizing evaporator, cleaning system and purification technique | |
| CN219922094U (en) | Useless ethanol dewatering purification device | |
| CN104891726B (en) | Treatment system for high-concentration ammonia-nitrogen wastewater | |
| CN102617381B (en) | Method for evaporating hydroxybenzene glycine | |
| CN217246820U (en) | Separation and purification equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |