CN110615730B - Rapid recovery process of ethanol water solvent for white oil production - Google Patents
Rapid recovery process of ethanol water solvent for white oil production Download PDFInfo
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- CN110615730B CN110615730B CN201810626872.7A CN201810626872A CN110615730B CN 110615730 B CN110615730 B CN 110615730B CN 201810626872 A CN201810626872 A CN 201810626872A CN 110615730 B CN110615730 B CN 110615730B
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- pipe
- heating
- ethanol
- tank body
- cylindrical shell
- Prior art date
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- 239000002904 solvent Substances 0.000 title claims abstract description 21
- 238000011084 recovery Methods 0.000 title claims abstract description 19
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 78
- 238000003860 storage Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000004821 distillation Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims description 63
- 239000007921 spray Substances 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a process for rapidly recovering ethanol and water solvent for white oil production, which comprises the following steps: distilling the ethanol water solvent by using a distillation device to quickly volatilize and discharge gaseous ethanol; condensing the gaseous ethanol discharged from the distillation device by utilizing a condensing device to liquefy the gaseous ethanol; and storing the liquefied ethanol 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 ethanol water solvent recovery process 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, is generally produced. The recovery process of alcohol water solvent is to utilize the principle that the boiling point of alcohol is lower than that of water and solution thereof, heat and evaporate the alcohol solution to be recovered at a temperature slightly higher than that of alcohol, evaporate high-concentration alcohol steam after rectifying the alcohol solution by a tower body, and then cool and recover the alcohol by a condenser to obtain the alcohol meeting the concentration requirement. However, because of the interaction of ethanol and water and the limitation of the device, the existing ethanol recovery process adopting a distillation kettle is easy to cause the excessive content of ethanol in the residual liquid at the bottom of the distillation kettle after separating and recovering the ethanol-water mixed solution, thereby bringing about the problems of great waste of solvents, difficult sewage post-treatment and the like.
Disclosure of Invention
The invention aims to: the ethanol water solvent rapid recovery process for white oil production can achieve high recovery rate, and avoid ethanol waste.
The technical scheme is as follows: the invention relates to a process for rapidly recovering ethanol and 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 the gaseous ethanol discharged from the distillation device by using a condensing device to liquefy the gaseous ethanol;
and 3, storing the liquefied ethanol by using a storage device.
Further, the distillation device used in the step 1 comprises a cylindrical tank body, a feed 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 cone tip of the cone-shaped top, and the return pipe is arranged at the lower cone tip of the cone-shaped bottom; a water storage cavity is arranged in the heating disc; each heating disc is obliquely arranged in the cylindrical tank body, and connecting pipes communicated with the internal water storage cavity are arranged at the highest point and the lowest point of each heating disc; 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; 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 pipes 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; branch pipes horizontally extending into the cylindrical tank body are fixedly arranged on the circumferential wall of the cylindrical tank body, a spray nozzle pipe parallel to the heating disc is communicated with the inner end part of each branch pipe, and spray nozzles are arranged on each spray nozzle pipe at intervals; each nozzle faces the upper side face of the corresponding heating disc; the outer end parts of the branch pipes are connected to the feeding pipe together; support legs are vertically arranged on the conical bottom; the air outlet pipe is used for being connected with the condensing device.
Further, the condensing device in the step 2 comprises a cylindrical shell, a cooling water inlet pipe, a cooling water outlet pipe, a buffer cylinder and a spiral coil; the buffer cylinder is vertically arranged at the inner center of the cylindrical shell, and the spiral coil is positioned in the cylindrical shell and surrounds 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 outlets 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 pipe 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 pipe extends out of the cylindrical shell to form a liquid outlet pipe; the drain pipe is used for being connected with the storage device.
Further, the storage device in the step 3 comprises a storage box body, an overflow pipe and a discharge pipe; the top of the storage box body is provided with a recovery pipe which is used for being connected with a condensing device; the top of the storage box body is provided with an upward-protruding air overflow cone 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 of the invention can recover ethanol at high rate, and avoid ethanol waste, wherein the distillation device, the condensing device and the storage device used have the following effects: spraying ethanol water solvent to the heating disc by using nozzles arranged on each nozzle pipe at intervals, so that ethanol volatilizes rapidly at the high temperature of the heating disc, and collecting gas from the conical top and discharging and recycling the gas from the gas outlet pipe; the heating disc is obliquely arranged, so that a larger heating area can be provided, water cannot stay on the upper side surface, and volatilization of the water is reduced; the heating coil is horizontally arranged in the conical bottom, so that residual ethanol in the bottom water can be further heated and volatilized, and higher recovery rate is ensured; the spray nozzle pipe and the heating disc are arranged in parallel, so that a plurality of spray nozzles can be conveniently arranged to work simultaneously; the spiral coil is arranged around the buffer cylinder, so that the cooling effect can be effectively ensured, and a relatively uniform cooling effect can be achieved under the injection effect of each water outlet hole; impurity gas can be discharged by utilizing the arrangement of the gas overflow cone top and the gas overflow pipe.
Drawings
FIG. 1 is a schematic diagram of the overall system architecture used in the process of the present invention.
Detailed Description
The technical scheme of the present invention will be described in detail 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 rapidly recovering ethanol and 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 the gaseous ethanol discharged from the distillation device by using a condensing device to liquefy the gaseous ethanol;
and 3, storing the liquefied ethanol by using a 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 cone tip of the cone-shaped top 2, and the return pipe 5 is arranged at the lower cone tip of the cone-shaped 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 the 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 commonly connected to the heating inlet pipe 10; the connecting pipes 12 positioned at the highest point of each heating disc 11 extend out of the cylindrical tank body 1 and are commonly connected to the heating outlet pipes 13; a heating coil 14 is horizontally arranged in the conical bottom 3; the water inlet of the heating coil 14 is connected to the heating inlet pipe 10, and the 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 spray nozzle pipe parallel to a heating disc 11 is communicated with the inner end part of each branch pipe 8, and spray nozzles 9 are arranged on each spray 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 commonly connected to the feed pipe 7; support legs 4 are 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 housing 15, and a spiral coil 18 is located inside the cylindrical housing 15 and disposed 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 outlets 21 are distributed on the circumferential wall of the buffer cylinder 19; a cooling water outlet pipe 16 provided at an upper side of the cylindrical housing 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 housing 15 to form a liquid outlet pipe.
As shown in fig. 1, the storage device in step 3 includes a storage box 22, an overflow pipe 25 and a discharge pipe 24; a recovery pipe 20 is arranged at the top of the storage box 22, and the recovery pipe 20 is connected with a liquid outlet pipe; an upward-protruding air overflow cone top 23 is arranged at the top of the storage box body 22; the air overflow pipe 25 is arranged at the cone top part of the air overflow cone top 23; the discharge pipe 24 is provided at a side lower portion of the storage tank 22.
The ethanol water solvent rapid recovery process for white oil production disclosed by the invention can recover ethanol at a high rate when in use, and avoid ethanol waste, wherein the distillation device, the condensing device and the storage device used have the following effects: spraying ethanol water solvent to the heating disc 11 by using the nozzles 9 arranged at intervals on each nozzle pipe, so that ethanol volatilizes rapidly at the high temperature of the heating disc 11, and gathering gas from the conical top 2 and discharging and recycling the gas from the gas outlet pipe 6; the heating disc 11 is obliquely arranged, so that a larger heating area can be provided, water cannot stay on the upper side surface, and volatilization of the water is reduced; the heating coil 14 is horizontally arranged in the conical bottom 3, so that residual ethanol in bottom water can be further heated and volatilized, and higher recovery rate is ensured; the spray nozzle pipe is arranged in parallel with the heating disc 11, so that a plurality of spray nozzles can be conveniently arranged to work simultaneously; the spiral coil 18 is arranged around the buffer cylinder 19, so that the cooling effect can be effectively ensured, and a relatively uniform cooling effect can be achieved under the injection effect of each water outlet hole 21; impurity gas can be discharged by the arrangement of the gas overflow cone top 23 and the gas overflow pipe 25.
As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. The quick recovery process of 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 the gaseous ethanol discharged from the distillation device by using a condensing device to liquefy the gaseous ethanol;
step 3, storing the liquefied ethanol by using a storage device;
the distillation device used in the step 1 comprises a cylindrical tank body (1), a feed pipe (7), a return pipe (5), an air 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 cone tip of the cone-shaped top (2), and the return pipe (5) is arranged at the lower cone tip of the cone-shaped 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 connecting pipes (12) communicated with the internal water storage cavity are arranged at the highest point and the lowest point of each heating disc (11); connecting pipes (12) positioned at the lowest points of the heating discs (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 the heating outlet pipes (13) together; a heating coil pipe (14) is horizontally arranged in the conical bottom (3); the water inlet of the heating coil (14) is connected to the heating inlet pipe (10), and the 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 spray nozzle pipe parallel to the heating disc (11) is communicated with the inner end part of each branch pipe (8), and spray nozzles (9) are arranged on each spray 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 commonly connected to the feed pipe (7); supporting legs (4) are vertically arranged on the conical bottom (3); the air outlet pipe (6) is used for being connected with the condensing device;
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 pipe (18); the buffer cylinder (19) is vertically arranged at the inner center of the cylindrical shell (15), and the 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 buffer cylinder (19); the 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 pipe (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 pipe (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;
the storage device in the step 3 comprises a storage box body (22), an 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-protruding air overflow cone top (23) is arranged at the top of the storage box body (22); the air overflow pipe (25) is arranged at the cone top part of the air overflow cone top (23); the discharging 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 |
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| Publication Number | Publication Date |
|---|---|
| CN110615730A CN110615730A (en) | 2019-12-27 |
| CN110615730B true CN110615730B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810626872.7A Active CN110615730B (en) | 2018-06-19 | 2018-06-19 | Rapid recovery process of ethanol water solvent for white oil production |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| 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 |
| CN205461085U (en) * | 2015-12-31 | 2016-08-17 | 盐城市恒星石油化学有限公司 | Ethanol water solvent recycling system |
| 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 |
| CN205461085U (en) * | 2015-12-31 | 2016-08-17 | 盐城市恒星石油化学有限公司 | Ethanol water solvent recycling system |
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| CN110615730A (en) | 2019-12-27 |
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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 |