CN201684430U - Concentration tank in nylon 66 continuous polymerization process - Google Patents
Concentration tank in nylon 66 continuous polymerization process Download PDFInfo
- Publication number
- CN201684430U CN201684430U CN201020175253XU CN201020175253U CN201684430U CN 201684430 U CN201684430 U CN 201684430U CN 201020175253X U CN201020175253X U CN 201020175253XU CN 201020175253 U CN201020175253 U CN 201020175253U CN 201684430 U CN201684430 U CN 201684430U
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- Prior art keywords
- casing
- heating coil
- coil pipe
- spiral heating
- flow guide
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Abstract
The utility model discloses a concentration tank in nylon 66 continuous polymerization process in the field of chemical equipment. The concentration tank comprises a vertically arranged casing with a closed upper end and a closed lower end; outer spiral heating coil pipe is arranged on the periphery of the casing; an inner spiral heating coil pipe is arranged inside the casing; a feeding pipe is arranged on the casing; a discharging port is arranged at the bottom of the casing; a gas-phase outlet is arranged on the top of the casing; a flow guide cylinder is arranged on the inner side of the inner spiral heating coil pipe; openings are arranged on both the upper portion and the lower portion of the flow guide cylinder; and an orifice of the feeding pipe is connected onto the lateral surface of the flow guide cylinder. When the concentration tank works, salt liquor inside the casing can be heated by the aid of the outer spiral heating coil pipe and the inner spiral heating coil pipe, the salt liquor enters the flow guide cylinder from the feeding pipe and forms orderly convection inside and outside the flow guide cylinder by the aid of the influence of the inner spiral heating coil pipe, the outer spiral heating coil pipe and evaporation action of the salt liquor, and the concentration efficiency and quality of the salt liquor can be improved. The concentration tank has the advantages of simple structure, natural convection stirring of the salt liquor, low equipment cost and capability of being used for concentration and evaporation for various chemical raw materials and products.
Description
Technical field
The utility model relates to a kind of chemical production equipment, thickener in particularly a kind of nylon 66 continuous polymerizations.
Background technology
Nylon 66 continuous polymerization units are raw material with hexamethylene diamine and adipic acid or nylon salt mainly, make nylon 66 salt solution, enter measuring tank through behind the filter, add various auxiliary agents again, enter thickener through filter, preheater then.Salting liquid after concentrating enters reactor again after the heating of salt preheater, carry out preliminary polymerization, enter flash vessel then, enter the pre-polymerization device after the flash distillation again and continue polymerization, this moment, the degree of polymerization reached about 2.0-2.1, after polymerizer comes out in the past, enter the back polymerizer again and further react, make melt viscosity reach the requirement of corresponding product.
In this process route, the main effect of thickener is that 50% saline solution is brought up to 70%, and temperature is brought up to 120 ℃ from 90 ℃, and then reduces the evaporation of moisture in reactor, alleviates the load of reactor, improves the output of the unit volume of reactor.The groove that contracts of a kind of farming of using at present, its structure mainly includes the vertical setting and the housing of closed at both ends up and down, the housing periphery is provided with the external spiral heat(ing) coil, be provided with the inside spin heat(ing) coil in the housing, housing is provided with feed pipe, and housing bottom is provided with discharging opening, and case top is provided with gaseous phase outlet, the case top center is provided with a shaft and extend in the housing, and shaft is provided with stirring vane.This device feeds steam for external spiral heat(ing) coil and inside spin heat(ing) coil during work, enters salting liquid in the housing from feed pipe, be heated evaporation, shaft rotates simultaneously, promotes its evaporation, the gas that evaporates is from the gaseous phase outlet separating device, and salting liquid itself concentrates.But because in the prior art, the lifting rate of stirring is little, the heat exchange efficiency of itself and inside spin heat(ing) coil and external spiral heat(ing) coil is not high, and efficiency of utilization is low; Stirring is equipment in addition, the fault rate height, and energy consumption is also high.
The utility model content
The purpose of this utility model provides the thickener in a kind of nylon 66 continuous polymerization techniques, makes salting liquid heat exchange efficiency height, flows in order, and energy consumption reduces.
The purpose of this utility model is achieved in that the thickener in nylon 66 continuous polymerization techniques, comprise the vertical setting and the housing of closed at both ends up and down, the housing periphery is provided with the external spiral heat(ing) coil, be provided with the inside spin heat(ing) coil in the housing, housing is provided with feed pipe, and housing bottom is provided with discharging opening, and case top is provided with gaseous phase outlet, described inside spin heat(ing) coil inboard is provided with up and down all guide shells of opening, and the feed pipe mouth of pipe is connected the guide shell side.
During the utility model work, but by the salting liquid in external spiral heat(ing) coil and the inside spin heat(ing) coil heated shell, salting liquid enters in the guide shell from feed pipe, be subjected to the influence of inside spin heat(ing) coil and external spiral heat(ing) coil, salting liquid forms orderly convection current inside and outside guide shell, make the equal chance that can obtain heating and evaporation of each several part of salting liquid, can improve salting liquid concentrating efficiency and quality; During use, use conduction oil to replace steam outside in spiral heating coil pipe and the inside spin heat(ing) coil, can reduce the cost of ancillary equipment.Compared with prior art, the utility model is simple in structure, and salting liquid free convection is stirred, and equipment cost is low, can be used in the production of multiple chemical products.
When guaranteeing that salting liquid enters in the housing, can not cause original disorder to stream mode, described feed pipe is tangentially and is connected on the guide shell.Salting liquid tangentially enters, and is eddy flow and rises, and can reduce disturbance.For further guaranteeing the orderly convection current of salting liquid, described feed pipe center line and horizontal plane angle are 5 °～20 °.5 °～20 ° angle is set, can provides certain rising power, promote circulation to salting liquid.
Description of drawings
Fig. 1 is the utility model structural representation.
Wherein, 1 gaseous phase outlet, the outlet of 2 inner coil pipes, 3 outer coil pipe outlets, 4 housings, 5 guide shells, 6 inside spin heat(ing) coils, 7 external spiral heat(ing) coils, 8 outer coil pipe imports, 9 inner coil pipe imports, 10 discharging openings, 11 feed pipes.
The specific embodiment
As shown in the figure, be the thickener in nylon 66 continuous polymerization techniques, closed at both ends about its housing 4 vertical settings also, housing 4 peripheries are provided with external spiral heat(ing) coil 7, external spiral heat(ing) coil 7 lower ends are provided with outer coil pipe import 8, the upper end is provided with outer coil pipe outlet 3, be provided with inside spin heat(ing) coil 6 in the housing 4, the inner coil pipe import 9 of inside spin heat(ing) coil 6 lower ends and the inner coil pipe of upper end outlet 2 is stretched out from housing, also be provided with feed pipe 11 on the housing, housing bottom is provided with discharging opening 10, housing 4 tops are provided with gaseous phase outlet 1, and inside spin heat(ing) coil 6 inboards are provided with up and down all guide shells 5 of opening, and the feed pipe mouth of pipe is and tangentially is connected guide shell 5 sides, feed pipe center line and horizontal plane angle are 5 °, can be between 5 °～20 ° choosing value arbitrarily.
This device is by feeding conduction oil in inside spiral heating coil pipe and the external spiral heat(ing) coil, to enter the salting liquid heating in the housing from feed pipe, impel the salting liquid evaporation, gaseous phase outlet connects the condensing unit device, during work, the gas that evaporates is from the gaseous phase outlet separating device, and salting liquid self concentrates, and meeting the requirements of salting liquid can be drawn out of from discharging opening.Salting liquid tangentially enters in the guide shell along guide shell from feed pipe, and is the eddy flow state and rises, under the dynamic action of self transpiration, can be to rising, and the outer liquid of guide shell moves downward, and is heated simultaneously, enters in the guide shell from the guide shell bottom again, forms convection current.Below the conduction oil temperature control to 180 ℃, can not cause harmful effect in this device to the quality of product, its thermal efficiency height, ancillary equipment is few, and the production run cost is low.
Claims (3)
1. the thickener in nylon 66 continuous polymerization techniques, comprise the vertical setting and the housing of closed at both ends up and down, the housing periphery is provided with the external spiral heat(ing) coil, be provided with the inside spin heat(ing) coil in the housing, housing is provided with feed pipe, and housing bottom is provided with discharging opening, and case top is provided with gaseous phase outlet, it is characterized in that: described inside spin heat(ing) coil inboard is provided with up and down all guide shells of opening, and the feed pipe mouth of pipe is connected the guide shell side.
2. the thickener in nylon 66 continuous polymerization techniques according to claim 1 is characterized in that: described feed pipe is tangentially and is connected on the guide shell.
3. the thickener in nylon 66 continuous polymerization techniques according to claim 2 is characterized in that: described feed pipe center line and horizontal plane angle are 5 °～20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020175253XU CN201684430U (en) | 2010-04-29 | 2010-04-29 | Concentration tank in nylon 66 continuous polymerization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020175253XU CN201684430U (en) | 2010-04-29 | 2010-04-29 | Concentration tank in nylon 66 continuous polymerization process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201684430U true CN201684430U (en) | 2010-12-29 |
Family
ID=43372723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020175253XU Expired - Lifetime CN201684430U (en) | 2010-04-29 | 2010-04-29 | Concentration tank in nylon 66 continuous polymerization process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201684430U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479092A (en) * | 2018-06-13 | 2018-09-04 | 山东赫达股份有限公司 | Recycle sulfuric acid concentration evaporator in graphite system |
| CN112044102A (en) * | 2020-08-31 | 2020-12-08 | 江苏康祥实业集团有限公司 | A multistage evaporation plant for evaporation of sodium hypophosphite aqueous solution |
-
2010
- 2010-04-29 CN CN201020175253XU patent/CN201684430U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108479092A (en) * | 2018-06-13 | 2018-09-04 | 山东赫达股份有限公司 | Recycle sulfuric acid concentration evaporator in graphite system |
| CN108479092B (en) * | 2018-06-13 | 2024-03-29 | 山东赫达集团股份有限公司 | Graphite internal circulation sulfuric acid concentration evaporator |
| CN112044102A (en) * | 2020-08-31 | 2020-12-08 | 江苏康祥实业集团有限公司 | A multistage evaporation plant for evaporation of sodium hypophosphite aqueous solution |
| CN112044102B (en) * | 2020-08-31 | 2022-02-08 | 江苏康祥实业集团有限公司 | A multistage evaporation plant for evaporation of sodium hypophosphite aqueous solution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 225008 No. 18 Hung Road, Yangzhou Development Zone, Jiangsu, China Patentee after: Yangzhou Huitong chemical Polytron Technologies Inc Address before: 225008 No. 18 Hung Road, Yangzhou Development Zone, Jiangsu, China Patentee before: Open chemical industry technological Co., Ltd. of the favor of Yangzhou |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101229 |