CN208944096U - A kind of reaction kettle cleaning system - Google Patents
A kind of reaction kettle cleaning system Download PDFInfo
- Publication number
- CN208944096U CN208944096U CN201821465582.0U CN201821465582U CN208944096U CN 208944096 U CN208944096 U CN 208944096U CN 201821465582 U CN201821465582 U CN 201821465582U CN 208944096 U CN208944096 U CN 208944096U
- Authority
- CN
- China
- Prior art keywords
- reaction kettle
- solvent
- warehouse
- inlet
- cleaning system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Polyurethanes Or Polyureas (AREA)
Abstract
The utility model relates to field of chemical equipment, specifically disclose a kind of reaction kettle cleaning system, including solvent warehouse, and the solvent warehouse is equipped with inlet, and the inlet is connected to by pipeline with the discharge port of the bottom of the reaction kettle；The lower part of the solvent warehouse is provided with CD outlet, the CD outlet is connected to by pipeline with the feed inlet at the top of the reaction kettle, the first delivery pump is equipped between the inlet and the discharge port, the second delivery pump is equipped between the CD outlet and feed inlet, the solvent warehouse and the reaction kettle are designed with N2Entrance.The reaction kettle cleaning system of the utility model avoids cleaning solvent and reacts and fail with the water in air during cleaning and storage, substantially increases the recycling rate of waterused of cleaning solvent, and is added in polyurethane products the performance that will not influence product.
Description
Technical field
The utility model relates to field of chemical equipment, clean more particularly to a kind of reaction kettle applied to polyurethane production
System.
Background technique
When producing polyurethane coating, in order to guarantee the stabilization of product quality, one kettle product of every completion will clean reaction
Kettle.
Currently, to polyurethane kettle cleaning system be usually be arranged one be loaded with solvent and inlet and CD outlet respectively and instead
Answer the discharge port of kettle and solvent warehouse that feed inlet is respectively communicated with, by the way that the solvent in solvent warehouse is pumped in reaction kettle,
Solvent warehouse is pumped back to after to be cleaned, such as application No. is 201621330744.0 Chinese utility model patents.However
Cleaning solvent containing active group-NCO contacts in solvent warehouse with air, due to containing moisture, cleaning solvent in air
It can slowly be reacted with the water in air, and because cleaning solvent and reacting for water are uncontrollable, react obtained product molecule
Amount and molecular weight distribution are all uncontrollable, therefore cause reaction product part very glutinous, it is difficult to be filtered, it is also difficult to it removes, thus
Cause the whole kettle cleaning solvent of usual two to three days that will fail to scrap, so results in the huge waste of cleaning solvent.
In addition, technique is to save solvent at present, it can select to be added to cleaning solvent in polyurethane products and utilize again, but
It is to react the reaction product generated with water due to cleaning solvent to will lead to solvent viscosity increase, being added in polyurethane products may
The viscosity index that will cause polyurethane products is not up to standard, therefore cleaning solvent is caused to be difficult to recycle.Meanwhile even if not failing
It is preceding that cleaning solvent is added in formula, but since the reaction during storage is uncontrollable, failure is fast sometimes, and failure is slow sometimes, complete
It is unable to control technic index entirely, product quality is be easy to cause not can guarantee.
Utility model content
To overcome existing technological deficiency, the utility model provides a kind of reaction kettle cleaning applied to polyurethane production
System can greatly improve the reuse rate of cleaning solvent.
For realization the purpose of this utility model, it is achieved using following technical scheme:
A kind of reaction kettle cleaning system, including solvent warehouse, the solvent warehouse are equipped with inlet, and the inlet passes through
Pipeline is connected to the discharge port of the bottom of the reaction kettle；The lower part of the solvent warehouse is provided with CD outlet, the CD outlet
It is connected to by pipeline with the feed inlet at the top of the reaction kettle, the first conveying is equipped between the inlet and the discharge port
Pump is equipped with the second delivery pump between the CD outlet and feed inlet, the solvent warehouse and the reaction kettle are designed with N2Entrance.
In the utility model, it further includes polyurethane that reaction kettle referred to, which is not only merely the reaction kettle that production prepares polyurethane,
All content materials such as finished product storage tank have the container of polyurethane and polyaminoester emulsion.
In the prior art, due to containing more moisture in air, cleaning solvent is returned in cleaning process and having cleaned
It is easy to that polymerization reaction occurs with the water in air after solvent warehouse, reacts obtained molecular weight of product and molecular weight distribution all
Be it is uncontrollable, polymer viscosity generated is difficult to remove greatly, it is easy to cause cleaning solvent failure scrap, therefore, we
Case on solvent warehouse and reaction kettle by being arranged logical N2Entrance cleans reaction in solvent from the reaction kettle of solvent warehouse pumping
Kettle is pumped back to during the entire process of solvent warehouse to after having cleaned and all keeps N2Be passed through, can so reduce cleaning solvent
It is contacted with air, the reaction of moisture in the active group and air in cleaning solvent is avoided to produce molecular weight polymers as far as possible.
As a preferred solution, the solvent warehouse (1) is additionally provided with feeding port.
This programme has cleaned reaction kettle in cleaning solvent and has returned to solvent warehouse by increasing by a feeding port on solvent warehouse
Afterwards, suitable reactant that can be reacted with-NCO group can be put by feeding port, the active group in cleaning solvent is rapid
It reacts away, avoid-NCO group reacts with water, and the waste residue generated is easy sedimentation discharge.Discharge for waste residue can use
Waste residue is allowed to be settled down to the bottom of solvent warehouse, the valve for periodically opening solvent warehouse bottom carries out deslagging.It is as one preferred
Scheme, the CD outlet of the solvent warehouse also pass through pipeline and are connected to inlet；It is additionally provided between the CD outlet and feed inlet
Second filter, second filter and second delivery pump are also located between the CD outlet and the inlet.?
It is exactly that cleaning solvent is recycled in solvent warehouse by the second delivery pump, is filtered out reaction product by the second filter
It removes.This programme by rapidly depleting and obtaining segregative residue for the-NCO active group in cleaning solvent so that
Cleaning solvent can repeat as cleaning solvent to use or put into production again reuse.
As a preferred solution, the capacity of the solvent warehouse (1) reaction kettle matched for solvent warehouse (1) holds
1.1 ~ 1.5 times of the sum of amount.
In currently existing scheme, a solvent warehouse often wants mating multiple reaction kettles, so cause in cleaning solvent-
NCO active group is dense, and active group excessive concentration easilys lead to react faster with the water in air.If occurring accidentally to grasp
Make or very severe abnormal conditions occur, water occur in system, because NCO concentration is high, even if NCO and water reaction be at a slow speed,
But molecular weight increases also relatively fast in a short time, and solvent is easy to cause to scrap.This programme is kept away by devising safe clearance
Exempt from above situation appearance.
As a preferred solution, the ratio between height L and diameter D of the solvent warehouse are L/D=0.3 ~ 3.
As a preferred solution, the solvent warehouse is equipped with agitating paddle, and the agitating paddle includes shaft, the shaft
Top be equipped with motor, middle part is set at least one layer of blade；The diameter of the blade is the 0.05 ~ 0.95 of solvent warehouse diameter
Times.
As a preferred solution, the number of plies of the blade is 2 ~ 4 layers.
Preferably, the blade is involute-type impeller.
It is further preferred that the agitating paddle is in its shaft to avoid the residue generated from being adhered to solvent warehouse bottom
Bottom, which is equipped with, scrapes bottom point.
As a preferred solution, first filter is additionally provided between the inlet and the discharge port.
Compared with the prior art, the utility model provides a kind of simple reaction kettle cleaning system of structure, by clear
Wash and add reactant in solvent, rapidly deplete the active group in cleaning solvent, avoid cleaning solvent during storage with
Water in air reacts and solvent is caused to fail, and substantially increases the recycling rate of waterused of cleaning solvent, and is added to polyurethane production
The performance of product will not be influenced in product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of reaction kettle cleaning system.
Fig. 2 is the structural schematic diagram of solvent warehouse.
Fig. 3 is the sectional view of solvent warehouse.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, with reference to the accompanying drawing to the utility model
Embodiment is described in more detail.
Embodiment
Firstly the need of, it is noted that in the present embodiment, reaction kettle refers to all being loaded with polyurethane finished product or poly-
The container of urethane intermediates was contained in the entire production process of urethane；And the reaction of polyurethane is not only prepared including production
Kettle further includes the container that all content materials such as polyurethane finished product storage tank have polyurethane and polyaminoester emulsion.
As shown in Figure 1, a kind of reaction kettle cleaning system, including solvent warehouse 1 are present embodiments provided, solvent warehouse top
Equipped with inlet, lower part is provided with CD outlet.Wherein, inlet is connected to by pipeline with the discharge port of the bottom of reaction kettle 3, and
First filter 2 and the first delivery pump 6 are equipped between inlet and discharge port；CD outlet is sequentially connected the second filtering by pipeline
Feed inlet/the inlet at the top of device 4, the second delivery pump 5 and reaction kettle 3, wherein the second filter 4 and the second delivery pump 5
Sequence can be interchanged, be respectively equipped with valve at the inlet of solvent warehouse 1 and the feed inlet of reaction kettle 3.When reaction kettle 3 into
The valve of material mouth is opened, and the inlet valve of solvent warehouse 1 is closed, and solvent is flowed out from CD outlet, by the second filter 4 and the
After two delivery pumps 5, then by feed inlet inflow reaction kettle 3；When the valve of the feed inlet of cleaning solvent reaction kettle 3 is closed, solvent is stored up
The inlet valve in storehouse 1 is opened, and solvent is flowed out from CD outlet, after the second filter 4 and the second delivery pump 5, then by putting in storage
Mouth flows back to solvent warehouse 1.
To consume the active group-NCO in solvent warehouse 1 in cleaning solvent as early as possible, solvent warehouse 1 be additionally provided with one into
Material mouth, for the reactant that can be reacted with active group-NCO is added.
Since in practical applications, the solvent warehouse 1 in reaction kettle cleaning system often wants mating multiple reaction kettles, in order to
Active group-NCO the excessive concentration in the cleaning solvent in solvent warehouse 1 is avoided, by the capacity of solvent warehouse 1 in the present embodiment
Be set as its 1.1 ~ 1.5 times of the sum of matched reaction kettle capacity.
In order to further increase reaction efficiency and reaction effect, as shown in Fig. 2, the present embodiment is also set in solvent warehouse 1
Agitating paddle has been set, motor is provided at the top of agitating paddle, bottom, which is additionally provided with, scrapes bottom point.Since reactant can be molten with cleaning rapidly
The polymer particles that active group reactive polymeric in agent obtains.Wherein, scrape what bottom point was mainly used for reaction to be avoided to obtain
Polymer particles are adhered to 1 bottom of solvent warehouse.Preferably, 1 bottom of solvent warehouse is set as inverted cone-shaped, to scrape bottom
Scrape bottom in portion.
As shown in Fig. 2, the diameter d of the blade of agitating paddle is 1 diameter D of solvent warehouse to further increase effect of settling
0.05 ~ 0.95 times.Draw ratio L/D=0.3 ~ 3 of solvent warehouse 1, preferably L/D=1.
Sedimentation with stirring is closed, sinking speed is directly proportional to 2 powers of particle diameter, density contrast, acceleration of motion,
It is inversely proportional with liquid phase viscosity.For specifying system, density contrast and viscosity are fixed values.Particle be not destroyed and Fast Growth is
Most critical parameters it requires cannot there is strong collision, including blade and particle；Liquid and particle, it is desirable that liquid flow direction cannot
There are great turbulence level and reversed flowing.It is micro- convenient for quickly forming major diameter in order to which the particle generated in reaction process is not destroyed
Grain, rapid subsidence, agitating paddle use sedimentation agitating paddle, and paddle, turbine, screw rod or ribbon can be selected in stirring blade form.?
It is optimal using involute-type impeller in this example.In addition, the number of plies of selection agitating paddle is at least 2 layers, and preferably adjacent two layers
The impeller direction of blade is different, as shown in Figure 3.
It is contacted to reduce cleaning solvent with air, is provided with N on solvent warehouse 1 and reaction kettle 32Be passed through mouth.
In the present embodiment, pipeline is also connected at the top of solvent warehouse 1 for vent gas treatment.Since treated, cleaning is molten
Agent can be applied to the production of polyurethane, and therefore, the pipeline connecting with CD outlet further includes a branch pipe, which is connected to polyurethane
Production line is delivered to polyurethane production line for polyurethane production for will test qualified cleaning solvent.
A kind of cleaning method of reaction kettle, specifically includes the following steps:
(1) valve for opening the feed inlet of reaction kettle 3, closes the valve of the inlet of solvent warehouse 1, with the second delivery pump
5 are pumped to cleaning solvent in reaction kettle 3 from solvent warehouse 1；After the completion of to be cleaned, then it is pumped back to the first delivery pump 6 molten
In agent warehouse 1.
(2) reactant that can be reacted with active group-NCO is put into from feeding port；Stirring is opened, after stirring 1.5 ~ 3 h,
The valve for closing feeding inlet opens the valve of inlet, opens the first delivery pump 6, follows cleaning solvent in solvent warehouse 1
Ring separates the waste residue in cleaning solvent by first filter 4.
(3) reactant excessive in cleaning solvent is removed, after examining solvent qualified, puts into production and follow again
Ring is used or is reused as cleaning solvent.
Wherein, during the entire process of step (1), N is all passed through in solvent warehouse and reaction kettle2。
Wherein, in step (2), reactant selects amine, epoxies, small molecule polyhydroxy substance.Positive fourth specifically can be selected
Amine, di-n-butylamine, diisopropylamine, epoxies, tartaric acid, DMPA etc. are a variety of.It is preferred that more preferable using Diamines effect.In this implementation
Molecular weight after selecting di-n-butylamine that reactant, NCO active group and di-n-butylamine is used as to react in example is small, and reaction speed is fast,
It can reach 97% conversion ratio in reaction 1 hour, reaction product is hard little particle, and adhesion is very easy to filtering and excludes.
In step (3), excessive reactant is removed, it, can be by passing through heating by boiling point difference by taking di-n-butylamine as an example
It is removed in vacuum, addition acid can also be distinguished according to reactive group and reacts away amino etc..
It is noted that needing regular deslagging in this programme, it is recycled after cleaning solvent detection.Such as find solvent warehouse
Quantity of solvent is reduced in 1, then is periodically added.
Above-described embodiment is merely examples for clearly illustrating the present invention, and is not to the utility model
Embodiment restriction.For those of ordinary skill in the art, it can also make on the basis of the above description
Other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all practical new at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model right and wants within the spirit and principle of type
Within the protection scope asked.
Claims (10)
1. a kind of reaction kettle cleaning system, including solvent warehouse (1), the solvent warehouse (1) is equipped with inlet, the inlet
It is connected to by pipeline with the discharge port of the bottom of the reaction kettle (3)；The lower part of the solvent warehouse (1) is provided with CD outlet,
The CD outlet is connected to by pipeline with the feed inlet at the top of the reaction kettle (3), the inlet and the discharge port it
Between be equipped with the first delivery pump (6), between the CD outlet and feed inlet be equipped with the second delivery pump (5), which is characterized in that it is described molten
Agent warehouse (1) and the reaction kettle (3) are designed with N2Entrance.
2. reaction kettle cleaning system according to claim 1, which is characterized in that the solvent warehouse (1), which is additionally provided with, to be fed intake
Mouthful.
3. reaction kettle cleaning system according to claim 2, which is characterized in that the CD outlet of the solvent warehouse (1) is also
It is connected to by pipeline with inlet；It is additionally provided between the CD outlet and feed inlet the second filter (4), second filter
(4) it is also located between the CD outlet and the inlet with second delivery pump (5).
4. reaction kettle cleaning system according to claim 1, which is characterized in that the capacity of the solvent warehouse (1) is molten
Agent warehouse (1) 1.1 ~ 1.5 times of the sum of matched reaction kettle capacity.
5. described in any item reaction kettle cleaning systems according to claim 1 ~ 4, which is characterized in that the solvent warehouse (1)
The ratio between height L and diameter D are L/D=0.3 ~ 3.
6. reaction kettle cleaning system according to claim 1, which is characterized in that the solvent warehouse (1) is equipped with agitating paddle,
The agitating paddle includes shaft, and the top of the shaft is equipped with motor, and middle part is set at least one layer of blade；The diameter of the blade
It is 0.05 ~ 0.95 times of solvent warehouse (1) diameter.
7. reaction kettle cleaning system according to claim 6, which is characterized in that the number of plies of the blade is 2 ~ 4 layers.
8. reaction kettle cleaning system according to claim 6, which is characterized in that the blade is involute-type impeller.
9. reaction kettle cleaning system according to claim 6, which is characterized in that the shaft bottom of the agitating paddle is equipped with and scrapes
Bottom point.
10. any one of according to claim 1 ~ 4 or 6 ~ 9 described in any item reaction kettle cleaning systems, which is characterized in that it is described enter
First filter (2) are additionally provided between Hatch Opening and the discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821465582.0U CN208944096U (en) | 2018-09-07 | 2018-09-07 | A kind of reaction kettle cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821465582.0U CN208944096U (en) | 2018-09-07 | 2018-09-07 | A kind of reaction kettle cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208944096U true CN208944096U (en) | 2019-06-07 |
Family
ID=66737358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821465582.0U Active CN208944096U (en) | 2018-09-07 | 2018-09-07 | A kind of reaction kettle cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208944096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109225097A (en) * | 2018-09-07 | 2019-01-18 | 佛山市科顺建筑材料有限公司 | A kind of reaction kettle cleaning system and cleaning method |
-
2018
- 2018-09-07 CN CN201821465582.0U patent/CN208944096U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109225097A (en) * | 2018-09-07 | 2019-01-18 | 佛山市科顺建筑材料有限公司 | A kind of reaction kettle cleaning system and cleaning method |
| CN109225097B (en) * | 2018-09-07 | 2024-02-20 | 佛山市科顺建筑材料有限公司 | Reaction kettle cleaning system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2875732C (en) | Method of manufacturing reaction agglomerated particles, method of manufacturing cathode active material for lithium ion battery, and method of manufacturing lithium ion battery containing cathode active material for lithium ion battery | |
| KR101762042B1 (en) | Continuous processor | |
| CN208944096U (en) | A kind of reaction kettle cleaning system | |
| US20120091060A1 (en) | Filtration method and device | |
| CN105111440B (en) | A kind of continuous environment-friendly preparation process of high-temperature resistant coating methyl phenyl silicone resin | |
| CN109225097A (en) | A kind of reaction kettle cleaning system and cleaning method | |
| CN108467341A (en) | The improved method and device detached to cyclo-hexane oxidation waste alkali | |
| MX2010012488A (en) | Method and apparatus for preparing a solution of a shear sensitive material. | |
| CN104558591A (en) | Continuous polymerization production process for chinlon 6 | |
| CN109400951A (en) | A kind of production method and device of DMC | |
| CN105483855A (en) | Method for producing spandex filaments by utilizing spandex prepolymer waste liquid | |
| EP1235635B1 (en) | Method for membrane filtration of liquids and device therefor | |
| CN108219135B (en) | Continuous washing device of polyphenylene sulfide resin | |
| CN105622813A (en) | Polyvinyl chloride seed-process paste resin production device and production technique | |
| CN110694341B (en) | Device and process for treating hydrolysate of hydrogen-containing silicone oil | |
| CN210993794U (en) | Device for chemically cleaning membrane module | |
| CN208980341U (en) | A kind of system that acidic etching waste liquid prepares micron cuprous oxide | |
| CN109081911A (en) | A kind of polyester production device that stablizing dyeing and its production technology | |
| CN214598994U (en) | Waste catalyst hydrolysis recovery system | |
| CN109867373A (en) | A method of processing low concentration polytetrafluoroethylene liquid | |
| CN217221134U (en) | Production storage device of liquid fertilizer | |
| CN114073868B (en) | Self-circulation filtering system and filtering process thereof | |
| CN211255950U (en) | Continuous production and enzyme recovery device of phenylglycine | |
| CN211595167U (en) | A outlet conduit belt cleaning device for anaerobic reactor | |
| CN209113892U (en) | A kind of tunning filtration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |