CN110615730A - Ethanol water solvent rapid recovery process for white oil production - Google Patents
Ethanol water solvent rapid recovery process for white oil production Download PDFInfo
- Publication number
- CN110615730A CN110615730A CN201810626872.7A CN201810626872A CN110615730A CN 110615730 A CN110615730 A CN 110615730A CN 201810626872 A CN201810626872 A CN 201810626872A CN 110615730 A CN110615730 A CN 110615730A
- Authority
- CN
- China
- Prior art keywords
- pipe
- ethanol
- heating
- tank body
- outlet pipe
- 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
- 239000002904 solvent Substances 0.000 title claims abstract description 24
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000011084 recovery Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 73
- 238000003860 storage Methods 0.000 claims abstract description 29
- 238000004821 distillation Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000000498 cooling water Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 7
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000010865 sewage 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
Abstract
The invention discloses a process for quickly recovering an ethanol water solvent for white oil production, which comprises the following steps: distilling the ethanol water solvent by using a distilling device to quickly volatilize and discharge gaseous ethanol; condensing gaseous ethanol discharged from the distillation device by using a condensing device to liquefy the gaseous ethanol; and storing the ethanol liquefied by using a storage device. The ethanol water solvent rapid recovery process can recover ethanol at a high rate, and avoid ethanol waste.
Description
Technical Field
The invention relates to an ethanol water solvent recovery process, in particular to a rapid recovery process of an ethanol water solvent for white oil production.
Background
In the existing industrial production, ethanol is commonly used as a solvent, and a mixed solution of ethanol and other solvents, such as an ethanol-water mixed solution and the like, is generally generated. The alcohol-water solvent recovering process is that the alcohol solution to be recovered is heated and evaporated at the temperature slightly higher than the boiling point of alcohol based on the principle that the boiling point of alcohol is lower than that of water and its solution, and high concentration alcohol vapor is evaporated after rectification in tower and then cooled and recovered in condenser to obtain alcohol meeting the concentration requirement. However, due to the interaction between ethanol and water and the limitation of the device, the ethanol recovery process using the distillation still is easy to cause the ethanol content in the residual liquid at the bottom of the distillation still to be too high after the ethanol-water mixed solution is separated and recovered, thereby bringing about the problems of large waste of solvent, difficult post-treatment of sewage, and the like.
Disclosure of Invention
The purpose of the invention is as follows: the ethanol water solvent rapid recovery process for white oil production, which has a high recovery rate, is provided, and ethanol waste is avoided.
The technical scheme is as follows: the invention relates to a process for quickly recovering an ethanol water solvent for white oil production, which comprises the following steps:
step 1, distilling an ethanol water solvent by using a distillation device to quickly volatilize and discharge gaseous ethanol;
step 2, condensing gaseous ethanol discharged from the distillation device by using a condensing device to liquefy the gaseous ethanol;
and 3, storing the ethanol liquefied by using the storage device.
Further, the distillation device used in the step 1 comprises a cylindrical tank body, a feeding pipe, a return pipe, an air outlet pipe, a heating inlet pipe, a heating outlet pipe and at least one heating disc; the top of the cylindrical tank body is provided with a conical top, and the bottom of the cylindrical tank body is provided with a conical bottom; the air outlet pipe is arranged at the upper conical tip of the conical top, and the return pipe is arranged at the lower conical tip of the conical bottom; a water storage cavity is arranged in the heating disc; each heating disc is obliquely arranged in the cylindrical tank body, and a connecting pipe communicated with the water storage cavity inside is arranged at the highest point and the lowest point of each heating disc; the connecting pipes positioned at the lowest point of each heating disc extend out of the cylindrical tank body and are connected to the heating inlet pipe together; the connecting pipes positioned at the highest point of each heating disc extend out of the cylindrical tank body and are connected to the heating outlet pipe together; a heating coil is horizontally arranged in the conical bottom; the water inlet of the heating coil is connected to the heating inlet pipe, and the water outlet of the heating coil is connected to the heating outlet pipe; the circumferential wall of the cylindrical tank body is fixedly provided with branch pipes which horizontally extend into the cylindrical tank body, the inner end parts of all the branch pipes are communicated with spray nozzle pipes which are parallel to the heating disc, and the spray nozzles are arranged on all the spray nozzle pipes at intervals; each nozzle faces the upper side face of the corresponding heating disc; the outer end parts of all the branch pipes are connected to the feeding pipe together; the conical bottom is vertically provided with supporting legs; the air outlet pipe is used for being connected with the condensing device.
Further, the condensing device in step 2 comprises a cylindrical shell, a cooling water inlet pipe, a cooling water outlet pipe, a buffer cylinder and a spiral coil; the spiral coil is positioned in the cylindrical shell and arranged around the buffer cylinder; the cooling water inlet pipe is fixedly arranged at the lower part of the side surface of the cylindrical shell and extends into the cylindrical shell to be communicated with the buffer cylinder; water outlet holes are distributed on the circumferential wall of the buffer cylinder; the cooling water outlet pipe is arranged at the upper part of the side surface of the cylindrical shell; the upper end of the spiral coil extends out of the cylindrical shell to form an air inlet pipe; the air inlet pipe is used for being connected with the distillation device; the lower end of the spiral coil extends out of the cylindrical shell to form a liquid outlet pipe; the liquid outlet pipe is used for being connected with the storage device.
Further, the storage device in the step 3 comprises a storage box body, an air overflow pipe and a discharge pipe; a recovery pipe is arranged at the top of the storage box body and is used for being connected with a condensing device; the top of the storage box body is provided with an upward convex air overflow conical top; the air overflow pipe is arranged at the top of the air overflow cone; the discharging pipe is arranged at the lower part of the side surface of the storage box body.
Compared with the prior art, the invention has the beneficial effects that: the recovery process can recover ethanol at a high rate, and avoid ethanol waste, wherein the used distillation device, condensation device and storage device have the effects that: spraying an ethanol water solvent to the heating disc by using nozzles arranged on each nozzle pipe at intervals, so that ethanol is quickly volatilized at the high temperature of the heating disc, gas is collected from the conical top, and the ethanol is discharged and recovered from the gas outlet pipe; the heating disc is obliquely arranged, so that a larger heating area can be obtained, water cannot stay on the upper side surface, and the volatilization of the water is reduced; the heating coil is horizontally arranged in the conical bottom, so that residual ethanol in the water at the bottom can be further heated and volatilized, and a high recovery rate is ensured; the nozzle pipes are arranged in parallel with the heating disc, so that a plurality of nozzles can be arranged conveniently to work simultaneously; the spiral coil is arranged around the buffer cylinder, so that the cooling effect can be effectively ensured, and a more uniform cooling effect can be achieved under the spraying action of each water outlet; the arrangement of the gas overflow conical top and the gas overflow pipe can discharge impurity gas.
Drawings
FIG. 1 is a schematic view of the overall structure of the system used in the process of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
the invention discloses a process for quickly recovering an ethanol water solvent for white oil production, which comprises the following steps:
step 1, distilling an ethanol water solvent by using a distillation device to quickly volatilize and discharge gaseous ethanol;
step 2, condensing gaseous ethanol discharged from the distillation device by using a condensing device to liquefy the gaseous ethanol;
and 3, storing the ethanol liquefied by using the storage device.
As shown in fig. 1, the distillation apparatus in step 1 comprises a cylindrical tank 1, a feed pipe 7, a return pipe 5, an outlet pipe 6, a heating inlet pipe 10, a heating outlet pipe 13 and at least one heating disc 11; the top of the cylindrical tank body 1 is provided with a conical top 2, and the bottom of the cylindrical tank body 1 is provided with a conical bottom 3; the air outlet pipe 6 is arranged at the upper conical tip of the conical top 2, and the return pipe 5 is arranged at the lower conical tip of the conical bottom 3; a water storage cavity is arranged in the heating disc 11; each heating disc 11 is obliquely arranged in the cylindrical tank body 1, and a connecting pipe 12 communicated with an internal water storage cavity is arranged at the highest point and the lowest point of each heating disc 11; the connecting pipes 12 positioned at the lowest point of each heating disc 11 extend out of the cylindrical tank body 1 and are connected to the heating inlet pipe 10 together; the connecting pipes 12 positioned at the highest point of each heating disc 11 extend out of the cylindrical tank body 1 and are connected to a heating outlet pipe 13 together; a heating coil 14 is horizontally arranged in the conical bottom 3; a water inlet of the heating coil 14 is connected to the heating inlet pipe 10, and a water outlet of the heating coil 14 is connected to the heating outlet pipe 13; branch pipes 8 horizontally extending into the cylindrical tank body 1 are fixedly arranged on the circumferential wall of the cylindrical tank body 1, a nozzle pipe parallel to the heating disc 11 is communicated and arranged at the inner end part of each branch pipe 8, and nozzles 9 are arranged on each nozzle pipe at intervals; each nozzle 9 faces the upper side of the corresponding heating disc 11; the outer end parts of the branch pipes 8 are connected to the feeding pipe 7 together; and a supporting leg 4 is vertically arranged on the conical bottom 3.
As shown in fig. 1, the condensing device in step 2 comprises a cylindrical shell 15, a cooling water inlet pipe 17, a cooling water outlet pipe 16, a buffer cylinder 19 and a spiral coil 18; a buffer cylinder 19 is vertically installed at the inner center of the cylindrical shell 15, and a spiral coil 18 is positioned in the cylindrical shell 15 and is arranged around the buffer cylinder 19; the cooling water inlet pipe 17 is fixedly arranged at the lower part of the side surface of the cylindrical shell 15, and extends into the cylindrical shell 15 to be communicated with the buffer cylinder 19; water outlet holes 21 are distributed on the circumferential wall of the buffering cylinder 19; a cooling water outlet pipe 16 is provided at the upper side of the cylindrical casing 15; the upper end of the spiral coil 18 extends out of the cylindrical shell 15 to form an air inlet pipe, and the air inlet pipe is connected with the air outlet pipe 6 through a pipeline; the lower end of the spiral coil 18 extends out of the cylindrical shell 15 to form a liquid outlet pipe.
As shown in FIG. 1, the storage device in step 3 comprises a storage tank body 22, an air overflow pipe 25 and a discharge pipe 24; a recovery pipe 20 is arranged at the top of the storage box body 22, and the recovery pipe 20 is connected with the liquid outlet pipe; an upward convex air overflow conical top 23 is arranged at the top of the storage box body 22; the air overflow pipe 25 is arranged at the top of the air overflow conical top 23; the discharge pipe 24 is provided at a lower side of the storage tank 22.
The rapid ethanol water solvent recovery process for white oil production disclosed by the invention can recover ethanol at a high rate and avoid ethanol waste when in use, wherein the used distillation device, condensation device and storage device have the effects that: spraying an ethanol water solvent to the heating disc 11 by using nozzles 9 arranged on each nozzle pipe at intervals, so that ethanol is quickly volatilized at the high temperature of the heating disc 11, gas is collected from the conical top 2, and the ethanol is discharged and recovered from the gas outlet pipe 6; the heating disc 11 is obliquely arranged, so that a larger heating area can be achieved, water cannot stay on the upper side surface, and the volatilization of the water is reduced; the heating coil 14 is horizontally arranged in the conical bottom 3, so that residual ethanol in the bottom water can be further heated and volatilized, and a high recovery rate is ensured; the nozzle pipes are arranged in parallel with the heating disc 11, so that a plurality of nozzles can be arranged conveniently to work simultaneously; the spiral coil 18 is arranged around the buffering cylinder 19, so that the cooling effect can be effectively ensured, and a relatively uniform cooling effect can be achieved under the spraying action of each water outlet 21; the impurity gas can be discharged by the arrangement of the gas overflow cone 23 and the gas overflow pipe 25.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The process for quickly recovering the ethanol water solvent for producing the white oil is characterized by comprising the following steps of:
step 1, distilling an ethanol water solvent by using a distillation device to quickly volatilize and discharge gaseous ethanol;
step 2, condensing gaseous ethanol discharged from the distillation device by using a condensing device to liquefy the gaseous ethanol;
and 3, storing the ethanol liquefied by using the storage device.
2. The ethanol water solvent rapid recovery process for white oil production according to claim 1, characterized in that the distillation device used in the step 1 comprises a cylindrical tank body (1), a feeding pipe (7), a return pipe (5), an outlet pipe (6), a heating inlet pipe (10), a heating outlet pipe (13) and at least one heating disc (11); the top of the cylindrical tank body (1) is provided with a conical top (2), and the bottom of the cylindrical tank body (1) is provided with a conical bottom (3); the air outlet pipe (6) is arranged at the upper conical tip of the conical top (2), and the return pipe (5) is arranged at the lower conical tip of the conical bottom (3); a water storage cavity is arranged in the heating disc (11); each heating disc (11) is obliquely arranged in the cylindrical tank body (1), and a connecting pipe (12) communicated with an internal water storage cavity is arranged at the highest point and the lowest point of each heating disc (11); the connecting pipes (12) positioned at the lowest point of each heating disc (11) extend out of the cylindrical tank body (1) and are connected to the heating inlet pipe (10) together; the connecting pipes (12) positioned at the highest point of each heating disc (11) extend out of the cylindrical tank body (1) and are connected to a heating outlet pipe (13) together; a heating coil (14) is horizontally arranged in the conical bottom (3); a water inlet of the heating coil (14) is connected to the heating inlet pipe (10), and a water outlet of the heating coil (14) is connected to the heating outlet pipe (13); branch pipes (8) horizontally extending into the cylindrical tank body (1) are fixedly arranged on the circumferential wall of the cylindrical tank body (1), the inner end parts of the branch pipes (8) are respectively communicated with a nozzle pipe parallel to the heating disc (11), and nozzles (9) are respectively arranged on the nozzle pipes at intervals; each nozzle (9) faces the upper side face of the corresponding heating disc (11); the outer end parts of the branch pipes (8) are connected to the feeding pipe (7) together; the conical bottom (3) is vertically provided with a supporting leg (4); the air outlet pipe (6) is used for being connected with the condensing device.
3. The ethanol water solvent rapid recovery process for white oil production according to claim 1, wherein the condensing device in the step 2 comprises a cylindrical shell (15), a cooling water inlet pipe (17), a cooling water outlet pipe (16), a buffer cylinder (19) and a spiral coil (18); the buffer cylinder (19) is vertically arranged at the center of the interior of the cylindrical shell (15), and the spiral coil (18) is positioned in the cylindrical shell (15) and arranged around the buffer cylinder (19); the cooling water inlet pipe (17) is fixedly arranged at the lower part of the side surface of the cylindrical shell (15) and extends into the cylindrical shell (15) to be communicated with the buffer cylinder (19); water outlet holes (21) are distributed on the circumferential wall of the buffer cylinder (19); a cooling water outlet pipe (16) is arranged at the upper part of the side surface of the cylindrical shell (15); the upper end of the spiral coil (18) extends out of the cylindrical shell (15) to form an air inlet pipe; the air inlet pipe is used for being connected with the distillation device; the lower end of the spiral coil (18) extends out of the cylindrical shell (15) to form a liquid outlet pipe; the liquid outlet pipe is used for being connected with the storage device.
4. The ethanol water solvent rapid recovery process for white oil production according to claim 1, wherein the storage device in the step 3 comprises a storage tank body (22), an air overflow pipe (25) and a discharge pipe (24); a recovery pipe (20) is arranged at the top of the storage box body (22), and the recovery pipe (20) is used for being connected with a condensing device; an upward convex air overflow conical top (23) is arranged at the top of the storage box body (22); the gas overflow pipe (25) is arranged at the top of the gas overflow cone top (23); the discharge pipe (24) is arranged at the lower part of the side surface of the storage box body (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810626872.7A CN110615730B (en) | 2018-06-19 | 2018-06-19 | Rapid recovery process of ethanol water solvent for white oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810626872.7A CN110615730B (en) | 2018-06-19 | 2018-06-19 | Rapid recovery process of ethanol water solvent for white oil production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110615730A true CN110615730A (en) | 2019-12-27 |
| CN110615730B CN110615730B (en) | 2023-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810626872.7A Active CN110615730B (en) | 2018-06-19 | 2018-06-19 | Rapid recovery process of ethanol water solvent for white oil production |
Country Status (1)
| Country | Link |
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| CN (1) | CN110615730B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111870997A (en) * | 2020-08-05 | 2020-11-03 | 张亚飞 | Aromatic oil extraction device capable of recycling water on top of distillation tower |
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| US5846299A (en) * | 1996-07-08 | 1998-12-08 | Conserve Resources, Inc. | Recovering water soluble, volatile, organic compounds from bakery and other plant emissions |
| CN204672094U (en) * | 2015-05-04 | 2015-09-30 | 精华制药集团南通有限公司 | A kind of alcohol recovering device for phenylbutazone synthesis |
| CN204918419U (en) * | 2015-07-27 | 2015-12-30 | 安徽省郎溪县联科实业有限公司 | Ethanol solvent purification recovery unit |
| CN205340191U (en) * | 2016-01-26 | 2016-06-29 | 上海华源制药安徽广生药业有限公司 | Rectification condensing equipment of ethanol recovery purification |
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| CN206081701U (en) * | 2016-08-13 | 2017-04-12 | 安徽东至广信农化有限公司 | A rectifying column that is used for chloromethane washing water recovery methyl alcohol and methylal |
| CN206295615U (en) * | 2016-11-30 | 2017-07-04 | 杭州鑫富科技有限公司 | A kind of ethanol reclaims equipment for purifying |
| CN207384902U (en) * | 2017-10-26 | 2018-05-22 | 云南汉素生物科技有限公司 | A kind of industrial hemp extracts CBD alcohol solvent retracting devices |
-
2018
- 2018-06-19 CN CN201810626872.7A patent/CN110615730B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5846299A (en) * | 1996-07-08 | 1998-12-08 | Conserve Resources, Inc. | Recovering water soluble, volatile, organic compounds from bakery and other plant emissions |
| CN204672094U (en) * | 2015-05-04 | 2015-09-30 | 精华制药集团南通有限公司 | A kind of alcohol recovering device for phenylbutazone synthesis |
| CN204918419U (en) * | 2015-07-27 | 2015-12-30 | 安徽省郎溪县联科实业有限公司 | Ethanol solvent purification recovery unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111870997A (en) * | 2020-08-05 | 2020-11-03 | 张亚飞 | Aromatic oil extraction device capable of recycling water on top of distillation tower |
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| Publication number | Publication date |
|---|---|
| CN110615730B (en) | 2023-08-04 |
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Denomination of invention: A Fast Recovery Process of Ethanol Water Solvent for White Oil Production Granted publication date: 20230804 Pledgee: Bank of Jiangsu Co.,Ltd. Yancheng branch Pledgor: YANCHENG HENGXING PETROLEUM CHEMICAL Co.,Ltd. Registration number: Y2024980011276 |