CN203610102U - Polyamide resin reaction unit - Google Patents
Polyamide resin reaction unit Download PDFInfo
- Publication number
- CN203610102U CN203610102U CN201420055259.1U CN201420055259U CN203610102U CN 203610102 U CN203610102 U CN 203610102U CN 201420055259 U CN201420055259 U CN 201420055259U CN 203610102 U CN203610102 U CN 203610102U
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- China
- Prior art keywords
- reaction unit
- metering cylinder
- metering
- polyamide resin
- pipe
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- Expired - Fee Related
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Abstract
The utility model discloses a polyamide resin reaction unit, which comprises a reaction kettle and also comprises a catalyst dripping device, wherein the catalyst dripping device comprises a metering cylinder; a material drawing pipe is mounted at the upper end of the metering cylinder; a metering pipe is mounted below the material drawing pipe; a discharging pipe is connected to the bottom of the metering cylinder; the discharging pipe is connected with the reaction kettle. By using the polyamide resin reaction unit, the problem that the adding amount of catalyst is not accurate in the prior art is solved, and polyamide resin reaction unit has the advantages that the metering is accurate, the degree of automation is high and the dripping is uniform.
Description
Technical field
The utility model relates to fine chemical technology field, especially relates to a kind of polyamide reaction unit.
Background technology
Dimeric dibasic acid is widely used in Chemical Manufacture, various informative, be the base stock of multiple fine chemical product.Dimeric dibasic acid and diamine or polyamine carry out the product obtaining after polycondensation reaction, are exactly polyamide.Producing in polyamide synthesis technique, generally adopt two kinds to add amine method: to mix and add amine method and drip amine method.Add in amine method in mixing, when reaction, dimeric dibasic acid, unit acid, binary acid are added in the lump, and then slowly temperature reaction, the method is simple to operate, but its shortcoming is: 1) water generation reaction in polycondensation reaction is not easy to discharge; 2) reaction heating rate is too fast; 3) can produce punching material phenomenon, cause the obstruction of condensing plant; 4) the polyamide molecular weight ratio in production is not easy to control.Dripping amine method is after dimeric dibasic acid is warmed up to uniform temperature, slowly splashes into diamine, and the generation water of polycondensation reaction is successively discharged consersion unit.This technological requirement operating personnel add amine speed according to the situation adjustment in reactor at any time, guarantee that reacting balance carries out; In course of reaction, the strict reaction speed of controlling keeps adding amine speed and goes out water speed and equate.
In conventional art, drip reaction unit that amine method produces binary acid only by the size of by-pass valve control control catalyst drops dosage, drip inhomogeneous, measure inaccurate.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming existing in prior art, a kind of reaction unit is provided, this device can accurately be controlled catalyst loading, the technical scheme adopting is: a kind of polyamide reaction unit, comprise reactor, it is characterized in that: described reaction unit also comprises catalyst drops feeder apparatus, described catalyst drops feeder apparatus comprises metering cylinder, in metering cylinder upper end, material-pumping tube is installed, gauge line is housed below material-pumping tube, bottom at metering cylinder is connected with vomit pipe, and vomit pipe is connected with described reactor.
Technical characterictic of the present utility model also has: described gauge line comprises hopper section, metering pipeline section and optoelectronic switch, in hopper section, besel is housed.
Technical characterictic of the present utility model also has: on described vomit pipe, be also provided with control valve.
Technical characterictic of the present utility model also has: on described metering cylinder, be also connected with blow-down pipe.
The beneficial effects of the utility model are: the use of gauge line has guaranteed the accuracy that catalyst adds, and can observe at any time by besel; The catalyst coming from material-pumping tube conveying flows to reactor after measure control again through Dropping feeder.This device has solved the inaccurate problem of catalyst dosage existing in conventional art, have metering accurately, automaticity is high, drip even advantage.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model structural representation, and accompanying drawing 2 is structural representations of catalyst drops feeder apparatus in accompanying drawing 1, and wherein 1 is reactor, the 2nd, and metering cylinder, the 3rd, material-pumping tube, the 4th, gauge line, the 5th, vomit pipe, the 6th, control valve, the 7th, blow-down pipe, the 8th, catalyst drops feeder apparatus.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described.The utility model discloses a kind of polyamide reaction unit, comprise reactor 1 and catalyst drops feeder apparatus, catalyst drops feeder apparatus comprises metering cylinder 2, in metering cylinder 2 upper ends, material-pumping tube 3 is installed, gauge line 4 is housed below material-pumping tube 3, be connected with vomit pipe 5 in the bottom of metering cylinder 2, vomit pipe 5 is connected with reactor 1.On metering cylinder 2, be also connected with blow-down pipe 7.
Gauge line 4 comprises hopper section, metering pipeline section and optoelectronic switch, in hopper section, besel is housed, and the catalyst of exporting from material-pumping tube 3 arrives metering pipeline section after hopper section, in order to observe needs, in hopper section, besel is housed.
Control valve 6 has also been housed on vomit pipe 5.
Certainly; above-mentioned explanation is not limitation of the utility model; the utility model is also not limited only to above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present utility model, also belong to protection domain of the present utility model.
Claims (4)
1. a polyamide reaction unit, comprise reactor, it is characterized in that: described reaction unit also comprises catalyst drops feeder apparatus, described catalyst drops feeder apparatus comprises metering cylinder, in metering cylinder upper end, material-pumping tube is installed, gauge line is housed below material-pumping tube, is connected with vomit pipe in the bottom of metering cylinder, vomit pipe is connected with described reactor.
2. according to polyamide reaction unit claimed in claim 1, it is characterized in that: described gauge line comprises hopper section, metering pipeline section and optoelectronic switch, in hopper section, besel is housed.
3. according to polyamide reaction unit claimed in claim 1, it is characterized in that: on described vomit pipe, be also provided with control valve.
4. according to polyamide reaction unit claimed in claim 1, it is characterized in that: on described metering cylinder, be also connected with blow-down pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420055259.1U CN203610102U (en) | 2014-01-28 | 2014-01-28 | Polyamide resin reaction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420055259.1U CN203610102U (en) | 2014-01-28 | 2014-01-28 | Polyamide resin reaction unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203610102U true CN203610102U (en) | 2014-05-28 |
Family
ID=50762783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420055259.1U Expired - Fee Related CN203610102U (en) | 2014-01-28 | 2014-01-28 | Polyamide resin reaction unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203610102U (en) |
-
2014
- 2014-01-28 CN CN201420055259.1U patent/CN203610102U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20170128 |