CN106608969A - Polyamide resin production process - Google Patents
Polyamide resin production process Download PDFInfo
- Publication number
- CN106608969A CN106608969A CN201510766463.3A CN201510766463A CN106608969A CN 106608969 A CN106608969 A CN 106608969A CN 201510766463 A CN201510766463 A CN 201510766463A CN 106608969 A CN106608969 A CN 106608969A
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- polyamide resin
- reaction kettle
- temperature
- amine
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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Polyamide resin is an important chemical raw material. A polyamide resin production process mainly comprises the steps that firstly dimer acid is sent to a dosing tank through a pump, a feeding pump is started, after the quantitative dimer acid is pumped into a reaction kettle, a stirrer is started, and meanwhile, heat conducting oil is used for heating; a mixed solution of ethylenediamine and hexanediamine in a raw material barrel is sucked into an amine-added small pot on the reaction kettle; when the temperature of the materials in the reaction kettle is up to about 80 DEG C, a bottom valve of the small pot is opened to add amine dropwise (dropping speed is controlled); in the amine adding process, the temperature of the materials is kept 130 DEG C or below; and after all the materials are put in, the temperature of the materials is increased to 150 DEG C and kept for one hour.
Description
2. technical process summary
First dimeric dibasic acid is opened into feed pump with dosage bunker is pumped into, quantitative dimeric dibasic acid is pumped into after reactor, turn on agitator, while using heat-conducting oil heating；Simultaneously by the mixed liquor sucting reaction kettle of ethylenediamine in Raw material pail and hexamethylene diamine plus amine canister；When material temperature reaches 80 DEG C or so in reactor, open little bottom valve and amine is added dropwise in kettle（Control rate of addition）；During amine is added, material temperature is maintained at less than 130 DEG C.
After all materials are finished, material is continuously heating to up to 150 DEG C and is incubated 1 hour.Conduction oil inlet valve is opened, material is continuously heating to 225 DEG C and is incubated 1 hour.Jing is checked, and after product is qualified, cuts off agitator, slow to open condensation valve（It is evacuated to -0.1Mpa）, the water condensation removal that reaction is generated（The operation will produce fixed gas G2-1 and waste water W2-1）.Reactor bottom valve is opened, and opens nitrogen（Enterprise makes by oneself）Valve, is slowly forced into 0.18 Mpa, material in kettle is all put in relay reservoir and is cooled to 110 DEG C, and feed liquid is pressed into into comminutor using air compressor, and granulating and forming obtains final product product（Contained aliphatic acid each may participate in the polymerisation in raw material impurity）.The granulation process is liquid condensation prilling：Material enter comminutor after, by liquid distributor be scattered in it is some it is little drip on conveyer belt, while by the cooling water below conveyer belt（Temperature is 25 DEG C）Droplet material is cooled to into solid granular.Resin particle is obtained after getting off from conveyer belt.
This step year production batch be 1639 batches（One kettle is a collection of）, the production simultaneously of the kettle of this operation 3.Every batch of about 12 hours production time.In terms of dimeric dibasic acid, polymerisation product yield is about 92% or so, and conversion ratio is 97.1%.
5000t/a polyurethane adhesives projects are analyzed
(2) the technological process of production
1. 5000t/a polyurethane adhesives project construction technological process
Polymerization：Adipic acid, terephthalic acid (TPA) are put into pet reaction kettle by manhole, then ethylene glycol, BDO is put into again by alcohol head tank, stirring in about 4 hours is warmed up to 160 DEG C and starts reaction.After steaming water, then it was warming up to 220 DEG C with 8 hours water is steamed completely, the water condensation for generating will be reacted by condensation procedure and removed（The operation will produce fixed gas G5-1 and waste water W5-1）.After vacuumize 8 hours after cooling to proceed to polyalcohol head tank standby.Course of reaction early stage normal pressure, later stage negative pressure.
It is modified：Host reactor is proceeded to after polyalcohol metering in head tank, IPDI is added（Solvent）, nertralizer（99% triethanolamine）, 90 DEG C insulation 2.5 hours after be cooled to 45 DEG C, after half an hour add ethyl acetate stirring；Modifying agent is added after 2 hours（1,4- butanediols）Continue to stir, product is discharged into when reaching qualified.
This step year production batch be 202 batches（One kettle is a collection of）, every batch of about 25 hours production time.
In terms of adipic acid, polymerization conversion is about 99.8% or so.
Description of the drawings：
Fig. 1 is polyurethane adhesive project construction process chart.
Claims (2)
1. a kind of polyamide production technology.
2. material composition and proportioning in polyamide production process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766463.3A CN106608969A (en) | 2015-11-12 | 2015-11-12 | Polyamide resin production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510766463.3A CN106608969A (en) | 2015-11-12 | 2015-11-12 | Polyamide resin production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106608969A true CN106608969A (en) | 2017-05-03 |
Family
ID=58614610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510766463.3A Pending CN106608969A (en) | 2015-11-12 | 2015-11-12 | Polyamide resin production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106608969A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554486A (en) * | 2013-10-30 | 2014-02-05 | 安庆市虹泰新材料有限责任公司 | Preparation method of alcohol-soluble dimer acid type polyamide resin |
-
2015
- 2015-11-12 CN CN201510766463.3A patent/CN106608969A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103554486A (en) * | 2013-10-30 | 2014-02-05 | 安庆市虹泰新材料有限责任公司 | Preparation method of alcohol-soluble dimer acid type polyamide resin |
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Application publication date: 20170503 |
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| WD01 | Invention patent application deemed withdrawn after publication |