CN1304344C - Method for recovering solvent from tail gas while extracting solanesol from tobacco - Google Patents
Method for recovering solvent from tail gas while extracting solanesol from tobacco Download PDFInfo
- Publication number
- CN1304344C CN1304344C CNB2005101042801A CN200510104280A CN1304344C CN 1304344 C CN1304344 C CN 1304344C CN B2005101042801 A CNB2005101042801 A CN B2005101042801A CN 200510104280 A CN200510104280 A CN 200510104280A CN 1304344 C CN1304344 C CN 1304344C
- Authority
- CN
- China
- Prior art keywords
- absorption
- solvent
- tail gas
- liquid
- absorption liquid
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Fats And Perfumes (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention discloses a recovering method of a solvent in tail gas when solanesol is extracted from tobacco. Paraffin is used as absorption liquid, is conveyed to an absorption tower 8 after passing through a heat exchanger 4, a cooler 5, an evacuating pump 6 and a storage tank 7, is pumped out after absorbing the solvent in the tail gas, is conveyed to a resolving tower 12 after passing through the heat exchanger 4 and a heater 11, and is circularly used after being resolved. The present invention overcomes the defects that absorption effect is poor, absorption and resolution are frequently changed, vegetable oil deteriorates at high temperature for a long term, etc. when the vegetable oil is used as the absorption liquid, the recovering effect of the solvent in the tail gas is good under the condition of not adding any facilities, and the production cost of the solanesol is greatly reduced.
Description
One, technical field
The present invention relates to organic chemical industry's product eggplant Buddhist nun alcohol production technology, the recovery technology of solvent in the tail gas when particularly extracting eggplant Buddhist nun alcohol with tobacco leaf.
Two, background technology
, adopt with the normal hexane when being the production of organic solvent extraction eggplant Buddhist nun alcohol of main component as raw material with tobacco leaf, a large amount of tail gas will be arranged---air and the discharge of solvent gas mixture, the solvent in the tail gas is not recycled mostly at present, cause waste.
Publication number CN 1118775A Chinese patent adopts the 6# solvent for extraction,, counter-current extraction tobacco leaf continuous by flat-turn leacher extracts eggplant Buddhist nun alcohol, this invention is resolved in Analytic Tower after the tail gas that produces in the entire production process is absorbed as absorption liquid with vegetables oil in the absorption tower again, thereby realizes the recycling to solvent in the tail gas.But this recovery method has the following disadvantages: (1) makes absorption liquid lose sorption owing to contain saturated steam very easily with vegetables oil emulsification in the tail gas; (2) vegetables oil and solvent are not homologues, and the solubleness of solvent vapo(u)r in vegetables oil is low, make absorption, resolve frequently replacement; For making solvent evaporation, vegetables oil is heated to about 110 ℃ when (3) resolving, long-term heating makes unsaturated composition polymerization in the vegetables oil easily, and vegetables oil viscosity is strengthened, and becomes waste oil.The existence of above defective, cause the recovering effect of solvent in the tail gas not good, the cost recovery height.
Three, summary of the invention
The recovery method of tail gas solvent when the purpose of this invention is to provide the eggplant Buddhist nun alcohol production that a kind of recovering effect is good, cost recovery is low.
For realizing above purpose, when the present invention extracts eggplant Buddhist nun alcohol with tobacco leaf in the tail gas recovery method of solvent on the prior art basis, adopts the alternative vegetables oil of whiteruss as absorption liquid, need not increase any facility, concrete tool flow is: pump extracts paraffin liquid through interchanger out, water cooler, vacuum pump, enter top, absorption tower behind the storage tank and be membranaceous paraffin whereabouts, the tail gas that the bottom, absorption tower enters rises under the effect of negative pressure of vacuum and fully contacts with membranaceous paraffin, solvent in the tail gas is absorbed by paraffin, air is evacuated pump and extracts out, the solvent paraffin that has absorbed solvent flows out through pump from the bottom, absorption tower, interchanger, enter Analytic Tower behind the well heater, the solvent vapo(u)r that is evaporated because of heating is carried a small amount of paraffin liquid pearl secretly and is entered cyclonic separator, vapour, liquid separates the back solvent vapo(u)r and enters condenser cooling recovery, the paraffin liquid that paraffin liquid returns after Analytic Tower bottom and the desorb converges, and paraffin liquid is pumped out after the interchanger heat exchange and recycles after converging; Analytic Tower feeds steam makes resolution temperature remain on 105-120 ℃.
Even more ideal resolution temperature is 110 ± 1 ℃.
Adopt above technical scheme, because paraffin and solvent belong to homologue, absorption liquid is significantly improved the receptivity of solvent, greatly reduce and absorb and the replacement frequency of resolving, the situation that has caused absorption liquid to lose efficacy because of absorption liquid emulsification or long-term heating when having avoided making absorption liquid with vegetables oil simultaneously takes place, because paraffin liquid is suitable with the vegetables oil price, so the present invention is not only good to the tail gas solvent recovery effect, cost recovery also significantly reduces, both eliminated the defective when vegetables oil is made absorption liquid, eggplant Buddhist nun alcohol production cost is obviously reduced.In addition, implementing the present invention need not increase any facility, basic identical when making absorption liquid with vegetables oil in the technological operation yet, helps promoting.
Four, description of drawings
Fig. 1 process flow diagram of the recovery method of solvent in tail gas when to be the present invention with tobacco leaf extract eggplant Buddhist nun alcohol.
Five, embodiment
Below by accompanying drawing and specific embodiment the present invention is described in further detail.
Paraffin in the paraffin storage tank 1 shown in Figure 1 is extracted out by pump 2, through under meter 3, spiral-plate heat exchanger 4, water cooler 5, vacuum pumping pump 6, enter 8 tops, absorption tower behind the storage tank 7 and be membranaceous whereabouts, tail gas enters from 8 bottoms, absorption tower and rises under the effect of negative pressure of vacuum and fully contacts with membranaceous paraffin, air in the tail gas is constantly extracted out by vacuum pump, falling to 8 bottoms, absorption tower after solvent gas is then fully absorbed by paraffin liquid is constantly extracted out by pump 9, through under meter 10, interchanger 4, well heater 11 and enter Analytic Tower 12, steam is continued to feed in Analytic Tower 12 bottoms remains on about 110 ℃ resolution temperature, carry a small amount of paraffin liquid pearl after the resolved vaporization of solvent in the paraffin secretly and enter cyclonic separator 13, isolated solvent vapo(u)r is recovered after delivering to condenser condenses, paraffin after paraffin liquid then is back to Analytic Tower 12 bottoms and resolves converges, and the paraffin liquid after converging is extracted out by pump 2 and recycled after under meter 3 enters spiral-plate heat exchanger 4 heat exchange.
Claims (2)
1, a kind of recovery method of solvent in the tail gas when extracting eggplant Buddhist nun alcohol with tobacco leaf, its technology is: absorption liquid is extracted out by pump (2), through interchanger (4), water cooler (5), vacuum pumping pump (6), enter top, absorption tower (8) behind the storage tank (7), and in the absorption tower, be membranaceous whereabouts, tail gas enters from bottom, absorption tower (8) and rises under the effect of negative pressure of vacuum environment and fully contacts with absorption liquid, solvent is absorbed by liquid absorption in the tail gas, air is evacuated pump (6) and extracts out, constantly extracted out bottom (8) from the absorption tower behind the absorption liquid lyosorption by pump (9), through interchanger (4), enter Analytic Tower (12) behind the well heater (11), Analytic Tower (12) bottom feeds steam to keep enough resolution temperatures, the solvent of resolved vaporization is carried a small amount of absorption liquid liquid pearl secretly and is entered cyclonic separator (13), vapour, be recovered after solvent vapo(u)r entered condenser condenses after liquid separated, absorption liquid returns Analytic Tower (12) bottom and converges with parsing post-absorption liquid, absorption liquid after converging is entered interchanger (4) by pump (2) extraction and recycles, it is characterized in that: this absorption liquid is a paraffin, and resolution temperature is 105-120 ℃.
2, according to claim 1 is described when extracting eggplant Buddhist nun alcohol with tobacco leaf in the tail gas recovery method of solvent, it is characterized in that: described resolution temperature is 110 ± 1 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101042801A CN1304344C (en) | 2005-10-09 | 2005-10-09 | Method for recovering solvent from tail gas while extracting solanesol from tobacco |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101042801A CN1304344C (en) | 2005-10-09 | 2005-10-09 | Method for recovering solvent from tail gas while extracting solanesol from tobacco |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749228A CN1749228A (en) | 2006-03-22 |
| CN1304344C true CN1304344C (en) | 2007-03-14 |
Family
ID=36604907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101042801A Expired - Fee Related CN1304344C (en) | 2005-10-09 | 2005-10-09 | Method for recovering solvent from tail gas while extracting solanesol from tobacco |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1304344C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489118A (en) * | 2011-11-25 | 2012-06-13 | 曲靖众一精细化工股份有限公司 | Method for recovering solvent in non-condensable gas containing solvent vapor and device thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108641A (en) * | 1994-03-14 | 1995-09-20 | 山东省潍坊烟叶复烤厂 | Method for extracting solanellic alcohol from tobacco and apparatus thereof |
| CN1118775A (en) * | 1994-09-15 | 1996-03-20 | 衡水市东风化工厂 | Method for producing solanesol |
-
2005
- 2005-10-09 CN CNB2005101042801A patent/CN1304344C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108641A (en) * | 1994-03-14 | 1995-09-20 | 山东省潍坊烟叶复烤厂 | Method for extracting solanellic alcohol from tobacco and apparatus thereof |
| CN1118775A (en) * | 1994-09-15 | 1996-03-20 | 衡水市东风化工厂 | Method for producing solanesol |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1749228A (en) | 2006-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103277982B (en) | Technology and device for circulating recycling of volatile organic compound in coating printing industry | |
| CN101896612A (en) | Method for controlling butanol concentration in fermentation broth | |
| CN104027997A (en) | Solution processing device | |
| CN105296163A (en) | Extraction equipment for fragrant plant essential oil and headspace volatile | |
| CN103215135B (en) | Method for synchronously extracting sage clary essential oil and sclareol from sage clary | |
| CN103215073B (en) | Production method for extracting lignite wax from brown coal | |
| CN103394205B (en) | Molasses alcohol fermented mature mash multi-effect evaporation concentration integrated equipment and process | |
| CN105707968A (en) | Recycling method of tobacco aroma substance | |
| CN102115436B (en) | Method for recovering acetone from dilute acetone water solution by reduced-pressure steam stripping type rectification | |
| CN205730432U (en) | A kind of mechanical steam recompression Distallation systm | |
| CN1304344C (en) | Method for recovering solvent from tail gas while extracting solanesol from tobacco | |
| CN106831526A (en) | Reclaim, purify the device and method of N methyl pyrrolidones | |
| CN111870983B (en) | Automatic defoaming multifunctional rectifying tower device and rectifying process thereof | |
| CN206467171U (en) | Reclaim, purify the device of N methyl pyrrolidones | |
| CN103086854B (en) | Method and device for reducing methanol content in formaldehyde process by silver method | |
| CN205115421U (en) | High -efficient extraction device that retrieves of plant extract fragrance | |
| CN205323494U (en) | Organic waste gas solvent absorbs retrieves clean system | |
| CN202430171U (en) | Bamboo vinegar recycling equipment | |
| CN102342304B (en) | Production method for extracting pyrethrin from pyrethrum | |
| CN103537112B (en) | A kind of method from the hot carrier gas recycle-water of brown coal drying | |
| CN203425541U (en) | Multiple-effect evaporation and concentration integrated equipment for molasses alcohol fermented mature undecanted wine | |
| CN105670782A (en) | Oil extraction process | |
| CN206566525U (en) | Suitable for the efficient atmospheric low-temperature concentration systems of Chinese medicine liquid | |
| CN101029277A (en) | Method for recovering mixed oil by cottonseed protein extracting process | |
| CN202297496U (en) | Heating flash separation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070314 Termination date: 20091109 |