CN201520732U - Methanol recovery device for producing furfural - Google Patents
Methanol recovery device for producing furfural Download PDFInfo
- Publication number
- CN201520732U CN201520732U CN2009202404305U CN200920240430U CN201520732U CN 201520732 U CN201520732 U CN 201520732U CN 2009202404305 U CN2009202404305 U CN 2009202404305U CN 200920240430 U CN200920240430 U CN 200920240430U CN 201520732 U CN201520732 U CN 201520732U
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Abstract
The utility model discloses a methanol recovery device for producing furfural, comprising a dehydrogenating tower, a condenser, a flow-dividing tank and a methyl alcohol storage tank, wherein the dehydrogenating tower comprises a tower kettle, a lower cone section, a stripping section tower body, an upper cone section, a rectifying section tower body, a coil heater, tower sections, tower plates, a downcomer, an overflowing weir, a feeding inlet, a methanol outlet, a backflow port, a kettle liquid outlet, a steam inlet and a steam outlet; the tower plates are sieve plates which are densely distributed with sieve holes; the tower plate is provided with a hole; the hole position is upwards provided with the overflowing weir, and is downwards connected with the downcomer; the feeding inlet is positioned at the upper part of the stripping section tower body, and the kettle liquid outlet is positioned at the lower part of the tower kettle; and the methanol outlet and the backflow port are positioned at the top part of a rectifying section. The device can recover methanol generated by furfural production and avoid environmental pollution.
Description
Technical field
The utility model relates to a kind of gas concentration unit, and specifically a kind of furfural is produced used recovery methanol device.
Background technology
Furfural claims 2 furan carboxyaldehyde again, is a kind of important industrial raw material.The production method of furfural mainly is to be that raw material intensification pressurized hydrolysis under an acidic catalyst effect obtains pentose with agricultural byproducts such as corn cob, cotton stalk, bagasse, and the dehydrated again cyclization of pentose simultaneously forms furfural.In the furfural hydrolysis liquid of hydrolysis reaction gained, except that containing furfural, still contain components such as acetic acid, methyl alcohol, must remove methanol gas by certain mode.Adopt complete condenser in the existing furfural production technology, the low methyl alcohol of not discharging of condensing temperature, methyl alcohol can be poly-more many more in system, influence the normal running of primary tower, influence the separating effect of separator again.Even methyl alcohol is got rid of, also be that methyl alcohol directly is discharged in the environment, cause environmental pollution, and the waste methanol feedstock.
The utility model content
The purpose of this utility model is to provide a kind of furfural production Methanol Recovery device, and this device can reclaim the methyl alcohol that produces in the furfural production, avoids environmental pollution.
The technical scheme in the invention for solving the technical problem is: a kind of furfural production Methanol Recovery device, comprise lightness-removing column, condenser, diversion cans and methyl alcohol basin, described lightness-removing column top links to each other with condenser by pipeline, condenser links to each other with a minute flow container by pipeline, divide flow container to link to each other with the rectifying tower top by reflux line, and link to each other with the methyl alcohol basin by pipeline, it is characterized in that, described lightness-removing column comprises the tower still, following awl joint, the stripping section tower body, the epicone joint, the rectifying section tower body, coil heater, the tower joint, column plate, downtake, overflow weir, opening for feed, the methyl alcohol outlet, refluxing opening, the outlet of still liquid, steam inlet and vapour outlet, described tower still is by awl joint and stripping section tower body link together by flange down, described stripping section tower body links together by flange with the rectifying section tower body by the epicone joint, described stripping section and rectifying section tower body all are to be linked together by flange by the tower joint, the middle part and the upper end of tower joint are provided with column plate, described column plate is a sieve plate, be densely covered with sieve aperture on it, described column plate one side has arcuate apertures, its lower floor's column plate opposite side has arcuate apertures, tapping upwards has vertical overflow weir, tapping links to each other with downtake downwards, described downtake is a chord downcomer, described opening for feed is positioned at stripping section tower body top, the outlet of still liquid is positioned at the bottom of tower still, described methyl alcohol outlet and refluxing opening all are positioned at the top of rectifying section, has coil heater in the described tower still, have steam inlet and vapour outlet on the coil heater, described rectifying section tower body top and tower still have thermometer on the awl joint down.
The further technical scheme of the utility model is: the described reflux line that divides flow container to advance lightness-removing column certainly is provided with spinner-type flowmeter.
The further technical scheme of the utility model is: described stripping section tower body top, rectifying section tower body top and following awl joint are provided with visor.
The further technical scheme of the utility model is: reflux ratio 1: 20 o'clock, further technical scheme can for: described tray spacing is 300mm, and the overflow height of weir is 1/15 of a tray spacing, and the chord downcomer height is 14/15 of a tray spacing, screen-aperture is 6mm, and percentage of open area is 4%; Described lightness-removing column stripping section stage number is 14, and the stripping section tower diameter is Φ 600mm, and the rectifying section stage number is 13, and the rectifying section tower diameter is Φ 400mm.
The aldehyde water mixed liquid that contains a small amount of furfural enters lightness-removing column from the opening for feed of lightness-removing column, after the coil heater heating, methanol gas in the aldehyde water mixed liquid rises along lightness-removing column, when the column plate by stripping section, fully contact with the water that enters lightness-removing column, after carrying out mass transfer and heat transfer, on the column plate of refining section, fully contact again with the methyl alcohol that refluxes, after carrying out mass transfer and heat transfer, draw from the methyl alcohol outlet, after the overhead condenser cooling was converted into liquid, through a minute flow container separatory, small part methyl alcohol refluxed from refluxing opening, most of methyl alcohol enters the methyl alcohol basin and stores, and the aldehyde water mixed liquid behind separating methanol flows out from the outlet of still liquid.
The beneficial effects of the utility model are: adopt the utility model to reclaim methanol device, taken off the methyl alcohol in the aldehyde water mixed liquid, not only eliminated the harm of methanol gas, reached influence works better to equipment, and can reclaim methyl alcohol and sell as product, reduce environmental pollution.The utility model lightness-removing column, because through stripping section and rectifying section rectifying, fully mass transfer and heat transfer on column plate improved the yield and the purity of methyl alcohol.
Description of drawings
Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the structural representation (containing part stripping section sectional view) of lightness-removing column, and Fig. 3 is the column plate vertical view.
Among the figure: 1, lightness-removing column, 2, condenser, 3, diversion cans, 4, the methyl alcohol basin, 5, spinner-type flowmeter, 6, tower still, 7, following awl joint, 8, the stripping section tower body, 9, the epicone joint, 10, rectifying section tower body, 11, coil heater, 12, the tower joint, 13, column plate, 14, downtake, 15, overflow weir, 16, opening for feed, 17, the methyl alcohol outlet, 18, refluxing opening, 19, still liquid outlet, 20, steam inlet, 21, vapour outlet, 22, thermometer mouth, 23, visor, 24, flange, 25, sieve aperture.
Embodiment
As shown in Figure 1.A kind of furfural production Methanol Recovery device, comprise lightness-removing column 1, condenser 2, diversion cans 3 and methyl alcohol basin 4, lightness-removing column 1 top links to each other with condenser 2 by pipeline, condenser 2 links to each other with minute flow container 3 by pipeline, divide flow container to link to each other with rectifying tower 1 top by reflux line, and link to each other with methyl alcohol basin 4 by pipeline, reflux line is provided with spinner-type flowmeter 5.
As shown in Figure 2, lightness-removing column comprises tower still 6, following awl joint 7, stripping section tower body 8, epicone joint 9, rectifying section tower body 10, coil heater 11, tower joint 12, column plate 13, downtake 14, overflow weir 15, opening for feed 16, methyl alcohol outlet 17, refluxing opening 18, still liquid outlet 19, steam inlet 20 and vapour outlet 21, described tower still is by awl joint and stripping section tower body link together by flange 25 down, described stripping section tower body 8 links together by flange 25 with rectifying section tower body 10 by epicone joint 9, described stripping section tower body 8 and rectifying section tower body 10 are linked together by flange 25 by tower joint 12, the middle part and the upper end of tower joint 12 are provided with column plate 13, perforate on the column plate 13, tapping upwards has vertical overflow weir 15, tapping links to each other with downtake 14 downwards, described opening for feed 16 is positioned at stripping section tower body upper end, still liquid outlet 19 is positioned at the lower end of tower still, described methyl alcohol outlet 17 and refluxing opening 18 are positioned at the top of rectifying section, has coil heater 11 in the described tower still, have steam inlet 20 and vapour outlet 21 on the coil heater, rectifying section tower body 10 tops and tower still have thermometer mouth 22 on the awl joint 7 down.Stripping section tower body 8 tops, rectifying section tower body 10 tops and following awl joint 7 are provided with visor 23, and tray spacing is 300mm, and the overflow height of weir is 1/15 of a tray spacing, and the chord downcomer height is 14/15 of a tray spacing, and screen-aperture is 6mm, and percentage of open area is 4%; Described lightness-removing column stripping section stage number is 14, and the stripping section tower diameter is Φ 600mm, and the rectifying section stage number is 13, and the rectifying section tower diameter is Φ 400mm.
As shown in Figure 3, described column plate 13 is a sieve plate, is densely covered with sieve aperture 25 on it, and described column plate one side has arcuate apertures, and tapping upwards links to each other with overflow weir 15, and tapping links to each other with downtake 14 downwards, and described downtake is a chord downcomer.
The aldehyde water mixed liquid that contains a small amount of furfural enters lightness-removing column from the opening for feed 16 of lightness-removing column 1, after coil heater 11 heating, the methanol gas of aqueous phase rises along lightness-removing column, when the column plate by stripping section, fully contact with the water that enters lightness-removing column, after carrying out mass transfer and heat transfer, on the column plate of refining section, fully contact again with the methyl alcohol that refluxes, after carrying out mass transfer and heat transfer, draw from methyl alcohol outlet 17, after overhead condenser 2 coolings were converted into liquid, through minute flow container 3 separatory, small part methyl alcohol refluxed from refluxing opening 18, most of methyl alcohol enters the methyl alcohol basin and stores 4, and the aldehyde water mixed liquid behind separating methanol flows out from still liquid outlet 19.Reflux ratio is 1: 20, and described column bottom temperature is 99 ℃, and tower top temperature is 65 ℃.
Claims (4)
1. furfural production Methanol Recovery device, comprise lightness-removing column, condenser, diversion cans and methyl alcohol basin, described lightness-removing column top links to each other with condenser by pipeline, condenser links to each other with a minute flow container by pipeline, divide flow container to link to each other with the rectifying tower top by reflux line, and link to each other with the methyl alcohol basin by pipeline, it is characterized in that, described lightness-removing column comprises the tower still, following awl joint, the stripping section tower body, the epicone joint, the rectifying section tower body, coil heater, the tower joint, column plate, downtake, overflow weir, opening for feed, the methyl alcohol outlet, refluxing opening, the outlet of still liquid, steam inlet and vapour outlet, described tower still is by awl joint and stripping section tower body link together by flange down, described stripping section tower body links together by flange with the rectifying section tower body by the epicone joint, described stripping section and rectifying section tower body all are to be linked together by flange by the tower joint, the middle part and the upper end of tower joint are provided with column plate, described column plate is a sieve plate, be densely covered with sieve aperture on it, described column plate one side has arcuate apertures, its lower floor's column plate opposite side has arcuate apertures, tapping upwards has vertical overflow weir, tapping links to each other with downtake downwards, described downtake is a chord downcomer, described opening for feed is positioned at stripping section tower body top, the outlet of still liquid is positioned at the bottom of tower still, described methyl alcohol outlet and refluxing opening all are positioned at the top of rectifying section, has coil heater in the described tower still, have steam inlet and vapour outlet on the coil heater, described rectifying section tower body top and tower still have thermometer on the awl joint down.
2. a kind of furfural production Methanol Recovery device as claimed in claim 1 is characterized in that, the described reflux line that divides flow container to advance lightness-removing column certainly is provided with spinner-type flowmeter.
3. a kind of furfural production Methanol Recovery device as claimed in claim 1 is characterized in that, described stripping section tower body top, rectifying section tower body top and following awl joint are provided with visor.
4. as any described a kind of furfural production Methanol Recovery device among the claim 1-3, it is characterized in that described tray spacing is 300mm, the overflow height of weir is 1/15 of a tray spacing, the chord downcomer height is 14/15 of a tray spacing, and screen-aperture is 6mm, and percentage of open area is 4%; Described lightness-removing column stripping section stage number is 14, and the stripping section tower diameter is Φ 600mm, and the rectifying section stage number is 13, and the rectifying section tower diameter is Φ 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202404305U CN201520732U (en) | 2009-10-27 | 2009-10-27 | Methanol recovery device for producing furfural |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202404305U CN201520732U (en) | 2009-10-27 | 2009-10-27 | Methanol recovery device for producing furfural |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201520732U true CN201520732U (en) | 2010-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202404305U Expired - Fee Related CN201520732U (en) | 2009-10-27 | 2009-10-27 | Methanol recovery device for producing furfural |
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| Country | Link |
|---|---|
| CN (1) | CN201520732U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417496A (en) * | 2011-09-30 | 2012-04-18 | 山东金缘生物科技有限公司 | Novel process for removing light components in stock solution of furfural and special production apparatus |
| CN102453008A (en) * | 2010-10-25 | 2012-05-16 | 山东省阳信金缘纺化有限公司 | Novel process for preparing furfural by two towers and dedicated comprehensive tower |
| CN104128014A (en) * | 2014-08-19 | 2014-11-05 | 衡水中科信能源有限公司 | Device and process for extracting methanol from low-boiling-point substance produced in furfurol production process |
| CN111701281A (en) * | 2020-07-14 | 2020-09-25 | 衷俊 | Acrylic acid purification lightness-removing tower |
-
2009
- 2009-10-27 CN CN2009202404305U patent/CN201520732U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102453008A (en) * | 2010-10-25 | 2012-05-16 | 山东省阳信金缘纺化有限公司 | Novel process for preparing furfural by two towers and dedicated comprehensive tower |
| CN102453008B (en) * | 2010-10-25 | 2013-09-25 | 山东省阳信金缘纺化有限公司 | Novel process for preparing furfural by two towers and dedicated comprehensive tower |
| CN102417496A (en) * | 2011-09-30 | 2012-04-18 | 山东金缘生物科技有限公司 | Novel process for removing light components in stock solution of furfural and special production apparatus |
| CN102417496B (en) * | 2011-09-30 | 2014-05-28 | 山东金缘生物科技有限公司 | Novel process for removing light components in stock solution of furfural and special production apparatus |
| CN104128014A (en) * | 2014-08-19 | 2014-11-05 | 衡水中科信能源有限公司 | Device and process for extracting methanol from low-boiling-point substance produced in furfurol production process |
| CN111701281A (en) * | 2020-07-14 | 2020-09-25 | 衷俊 | Acrylic acid purification lightness-removing tower |
| CN111701281B (en) * | 2020-07-14 | 2023-03-24 | 艾生科(江苏)化工科技有限公司 | Acrylic acid purification lightness-removing tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20141027 |
|
| EXPY | Termination of patent right or utility model |