CN2512482Y - Gas carried evaporator concentrated from acrylic amide solution - Google Patents
Gas carried evaporator concentrated from acrylic amide solution Download PDFInfo
- Publication number
- CN2512482Y CN2512482Y CN 01271991 CN01271991U CN2512482Y CN 2512482 Y CN2512482 Y CN 2512482Y CN 01271991 CN01271991 CN 01271991 CN 01271991 U CN01271991 U CN 01271991U CN 2512482 Y CN2512482 Y CN 2512482Y
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- China
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- tower
- heating tube
- tower body
- air
- column plate
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- Expired - Fee Related
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Abstract
The utility model relates to a gas carried evaporator concentrated from acrylic amide solution, belonging to evaporator concentrated from acrylic amide solution. The utility model consists of a tower body, a tower board, a material inlet, a material outlet, an air inlet and an air outlet. A plurality of tower boards is arranged inside the tower body. The tower board is provided with an overflow weir and an overflow outlet. The tower board is also provided with a sieving hole. The top of the tower body is provided with the air outlet. The upper part of the tower body is provided with a material inlet, while the lower part of the tower body is provided with the air inlet, and the bottom of the tower body is provided with the material outlet. The tower board is provided with a heating tube. The heating tube is communicated with a heating evaporator cavity and a steam condensate exhausting cavity. When in use, the steam heating tube positioned on the tower board is heated by steam; the solution flowing from the heating tube is forced to evaporate by the energy provided by the heating tube; as the ascending gas phase comprises a large amount of air, so that the solution has a function of inhibition; and according to the theory of gas carried evaporating, the heat transmission of air phase to gas phase from the heating tube to the tower board is increased to concentrate the solution, thereby obviously increasing the evaporating efficiency of the device.
Description
(1) technical field:
The utility model relates to acrylamide aqueous solution concentration and evaporation equipment.
(2) background technology:
Acrylamide (Acrylamide is called for short AM) is a kind of important organic synthesis raw material, and its application and demand constantly enlarge.When acrylamide was produced, its aqueous solution needed evaporation and concentration, and a kind of still formula of application evaporimeter that domestic past attempts is more by the chuck heating, feeds a large amount of air at the bottom of still.Air has worked to stop acrylamide polymerization on the one hand, has also taken the water vapour that is evaporated in a large number simultaneously out of to reach concentrated purpose.But because the equipment operating efficiency is poor, and material time of staying in equipment is long, easily causes polymerization, influences the quality and the yield of product, seldom uses.Number of patent application 98126468.9, publication number CN1224002A proposes a kind of concentration method of acrylamide aqueous solution, be that the material fluid bath that will fill acrylamide aqueous solution is connected in series the formation closed circulation system with heater and plate column, feed liquid heater via heating is laggard goes in the plate column, concentrate under normal pressure, the plate column bottom feeds oxygen-containing gas and contacts to take the moisture of vaporization out of with feed liquid on column plate.Feed liquid circulates repeatedly until reaching predetermined concentration.Sensible heat after this method only is heated by feed liquid is vaporized concentrated, and its evaporation capacity is less, feed liquid just can be reached requirement through repeatedly circulating.The evaporability of this equipment is low, all carries out batch operation on producing.
(3) summary of the invention:
The utility model solves emphatically in the above-mentioned evaporating concentration process, the problem that operating efficiency difference and equipment capacity are low.
The technical solution of the utility model is: the gas-carrying evaporation device is made up of tower body, column plate, feed inlet and outlet, porting.The multilayer column plate is housed in the tower body, and every layer of column plate has downflow weir and overfall, has sieve aperture on the column plate, and the top of tower body is provided with exhaust outlet, and the top of tower body is provided with charging aperture, and the bottom of tower body is provided with air inlet, and the bottom of tower body is provided with discharging opening.Heating tube is housed on column plate, and heating tube is communicated with heating steam chamber and steam condensate discharge side, is respectively arranged with heating steam import and steam condensate outlet on heating steam chamber and the steam condensate discharge side.During operation, the acrylamide feed liquid is carried with centrifugal pump, be preheating to about 90 ℃ through one group of double pipe heater and enter on first block of column plate by charging aperture, contact with the gas phase that rises from next column plate and to evaporate, then gas phase is discharged by the exhaust outlet of cat head, and feed liquid is crossed downflow weir by flowing under the overfall on next piece column plate.At the bottom of tower, the air under the normal temperature be carrier gas in the air inlet access to plant, rise to contact by the sieve aperture step by step tray on the column plate and evaporate with feed liquid on the column plate.The input of air in the device can be squeezed into high pressure blower (as lobe pump), and also vacuum available pump (as water ring pump) self-chambering top set portion bleeds, with the air inlet suction of air from tower bottom.
The beneficial effects of the utility model are: owing to arranged heating tube on the tower of gas-carrying evaporation device, strengthened on each layer column plate the evaporation capacity of moisture content in the solution significantly, evaporation capacity has not improved 50%～100% when on the column plate heating tube being set.Because the acrylamide feed liquid forms foam with fully contacting of air one mixture of steam that rises from next column plate on each layer column plate, in gas phase, contain a large amount of air, press the gas-carrying evaporation principle, heating tube to the heat transfer between biphase gas and liquid flow has obtained remarkable enhancing, and air has good inhibition to acrylamide simultaneously.Owing to adopted the multilayer column plate, the evaporation and concentration ability of whole device is greatly improved, the situation less with heating tube and column plate are not set compared, and cocnentration factor can double.Adopting vavuum pump when cat head is bled, be negative-pressure operation in the device, can avoid acrylamide oneself to spill in installing, favourable to environment.
(4) description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the A-A profile.
(5) specific embodiment:
This gas-carrying evaporation device as shown in Figure 1, is made up of tower body, column plate, feed inlet and outlet, porting.6～16 layers of column plate are housed in the tower body, have downflow weir and overfall on every layer of column plate, have sieve aperture on the column plate, the top of tower body 1 is provided with exhaust outlet 2, and the top of tower body is provided with charging aperture 3, and the bottom of tower body is provided with air inlet 4, and the bottom of tower body is provided with discharging opening 5.Heating tube 7 is housed on the column plate 6, and as shown in Figure 2, heating tube is a comb, and heating tube is communicated with heating steam chamber 8 and steam condensate discharge side 9, is respectively arranged with heating steam import and steam condensate outlet on heating steam chamber and the condensate liquid discharge side.Screen-aperture d is 4.5～8mm, and sieve aperture spacing t is: (3～5) d.The tower body diameter is generally 500～2000mm, and tray spacing is 400～900mm.During work, the steam pressure in the heating tube is 1～1.5kg/cm
2If adopt vavuum pump to bleed from exhaust outlet, the vacuum at holding device top is 200～350mmHg when bleeding.The feed liquid preheat temperature is 85～92 ℃.The ratio that enters air and feed liquid flow is 50～200 standard cubic meter/tons.Can install logotype more than two, adopt the common machine process technology just can produce, splendid through experiment effect.
Claims (2)
1, the concentrated gas-carrying evaporation device of a kind of acrylamide aqueous solution, form by tower body, column plate, feed inlet and outlet and porting, the multilayer column plate is housed in tower body, downflow weir and overfall are set on the column plate, have sieve aperture on the column plate, it is characterized in that: heating tube [7] is housed on column plate [6].
2, the concentrated gas-carrying evaporation device of a kind of acrylamide aqueous solution according to claim 1 is characterized in that: 6～16 layers of column plate are arranged in the tower body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271991 CN2512482Y (en) | 2001-12-03 | 2001-12-03 | Gas carried evaporator concentrated from acrylic amide solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01271991 CN2512482Y (en) | 2001-12-03 | 2001-12-03 | Gas carried evaporator concentrated from acrylic amide solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512482Y true CN2512482Y (en) | 2002-09-25 |
Family
ID=33677266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01271991 Expired - Fee Related CN2512482Y (en) | 2001-12-03 | 2001-12-03 | Gas carried evaporator concentrated from acrylic amide solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512482Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157291A (en) * | 2013-04-01 | 2013-06-19 | 福建致尚生物质材料发展有限公司 | Low-boiling-point substance continuous desorption device of bio-ester plasticizer |
| CN108371826A (en) * | 2018-05-07 | 2018-08-07 | 金溪遥遥领先高科有限公司 | A kind of distillation column equipment |
-
2001
- 2001-12-03 CN CN 01271991 patent/CN2512482Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157291A (en) * | 2013-04-01 | 2013-06-19 | 福建致尚生物质材料发展有限公司 | Low-boiling-point substance continuous desorption device of bio-ester plasticizer |
| CN108371826A (en) * | 2018-05-07 | 2018-08-07 | 金溪遥遥领先高科有限公司 | A kind of distillation column equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |