CN208871950U - A kind of double round robin cooling system - Google Patents
A kind of double round robin cooling system Download PDFInfo
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- CN208871950U CN208871950U CN201821301083.8U CN201821301083U CN208871950U CN 208871950 U CN208871950 U CN 208871950U CN 201821301083 U CN201821301083 U CN 201821301083U CN 208871950 U CN208871950 U CN 208871950U
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Abstract
The utility model belongs to chemical technology field, and in particular to a kind of double round robin cooling system.The specific technical proposal is: a kind of double round robin cooling system, including external circulating system and internal circulation system；External circulating system includes outer circulation pump, and outer circulation pump connection the first freezing unit, first freezes unit is connected with epoxy resin production equipment, and epoxy resin production equipment is connected through hot water suction pump and hot water transport pipeline with cooling ponding tower；Cooling ponding tower is connected with circulation suction pump, and circulation suction pump is connected with pond；Internal circulation system includes internal circulation pump, and internal circulation pump connection the second freezing unit, second, which freezes unit, is connected through cold water suction pump and cold water transport pipeline with pond；Temperature-difference power generation module is additionally provided between hot water transport pipeline and cold water transport pipeline, hot water transport pipeline is close in the hot end of temperature-difference power generation module.This system can determine cooling system opening degree according to practical, and waste heat is also collected to and is converted to electric energy, effectively saves the energy.
Description
Technical field
The utility model belongs to chemical technology field, and in particular to a kind of double round robin cooling system.
Background technique
Epoxy resin has excellent chemical performance: shrinking percentage is low, adhesion strength is big, high mechanical strength, electrical isolation
Property it is good etc., be widely used in the every field of production and living.But its production process has several drawbacks.
Drawback generates a large amount of discarded heat first is that in epoxy resin production process, and production process needs additionally cool down, and one
As use water-cooled cooling: use steel pipe transmission cooling water, make water natural cooling during transportation, then again to production system into
Row cooling.This method generally requires longer steel pipe, takes up an area larger；Water is natural cooling, and temperature is unable to control；And it is only applicable in
Lower or when production system is smaller in ambient temperature, when ambient temperature is higher, the cooling water of natural heat dissipation preparation is unable to satisfy life
It produces and requires.
Drawback all derives from petrochemical industry second is that its raw materials for production is most of, very high to petroleum degree of dependence, and applies
Bisphenol A type epoxy resin widest in area, bisphenol-A is toxic, pollutes environment and harmful human health.
Therefore, developing a kind of double round robin cooling system for producing epoxy resin is focus on research direction now.
Summary of the invention
The purpose of the utility model is to provide a kind of double round robin cooling systems.
For achieving the above object, the technical scheme adopted by the utility model is a kind of epoxy resin is produced with double
Cycle refrigeration system, including the external circulating system and internal circulation system connected by pond with pipeline；
The external circulating system includes pumping from the outer circulation of pool water-pumping, and the outer circulation pump is connected by outlet conduit to be used
Unit is freezed in the first of cooling water, the first freezing unit is connected by outlet conduit with epoxy resin production equipment, institute
It states epoxy resin production equipment and is connected through hot water suction pump and hot water transport pipeline with cooling ponding tower；The cooling ponding tower is logical
It crosses water inlet line to be connected with circulation suction pump, the circulation suction pump is connected by water inlet line with pond；
The internal circulation system includes the internal circulation pump from pool water-pumping, and the internal circulation pump is connected by outlet conduit and used
Unit is freezed in the second of cooling water, the second freezing unit is connected through cold water suction pump and cold water transport pipeline with pond；
The double round robin cooling system further includes temperature-difference power generation module, and hot water fortune is close in the hot end of the temperature-difference power generation module
Defeated pipeline.
Preferably, the cold end of the temperature-difference power generation module is close to cold water transport pipeline.
Preferably, the temperature-difference power generation module is also connected with controller and battery.
Preferably, the external circulating system further includes the spare outer circulation pump connecting side by side with outer circulation pump and takes out with circulation
The spare circulation suction pump that water pump connects side by side.
Preferably, the internal circulation system further includes the spare internal circulation pump connecting side by side with internal circulation pump.
The utility model has the following beneficial effects:
1, this system creatively provides a kind of double round robin cooling system, including internal circulation system and external circulating system,
It can be determined individually to open external circulating system according to actual production conditions or open internal-external double circulation system simultaneously, effectively saved
Resource is saved；And double round robin cooling system temperature-controllable, space occupied are small.
By increasing this double round robin cooling system when producing epoxy resin, effectively control in epoxy resin production process
Reaction temperature, compared with equivalent responses condition, conventional refrigerant mode, use the utility model refrigeration system carry out epoxy
Resin reaction temperature is more controllable, is more advantageous to and improves epoxy resin yield.
2, the utility model also creatively increases temperature-difference power generation module, and the previous discarded thermal energy not being available is effective
Electric energy is collected and be converted to, and the electric energy can be directly used in circulating cooling process, effectively saves energy.
Detailed description of the invention
Fig. 1 is the utility model refrigeration system flow diagram.
Specific embodiment
The double round robin cooling system of the utility model includes external circulating system and internal circulation system, and two systems pass through pond 1
It is connected with pipeline.
The external circulating system includes the outer circulation pump 41 to draw water from pond 1, and outer circulation pump 41 passes through pipeline and the
One freezing unit 21 connects, and outer circulation pump 41 cools down to water by the first freezing unit 21 for after the water extraction in pond 1
Cooling treatment.
The first freezing unit 21 is connected by pipeline with epoxy resin production equipment 6.It can select according to actual needs
Select connection type.If being equipped with coolant liquid storage and working region in epoxy resin production equipment 6, will directly be cooled down with pipeline
Water imports；If can also be existed with soft tube winding in epoxy resin production equipment 6 without individual coolant liquid working region
The outer region to be cooled down of epoxy resin production equipment 6.It is of course also possible to which cooling water is divided into two parts, a part imports asphalt mixtures modified by epoxy resin
Inside rouge production equipment 6, a part carries out external cooling by modes such as pipeline windings.
After 6 use of epoxy resin production equipment, temperature is sharply increased cooling water, is taken out by hot water suction pump 51
Out, and by hot water transport pipeline 11 with cooling ponding tower 10 it is connected, all flows into cooling ponding tower 10.
Circulation suction pump 71 extracts the water in the cooling ponding tower 10 out again, by pipeline reflux natural cooling, most
It returns in pond 1, is recycled eventually.
The internal circulation system includes the internal circulation pump 31 to draw water from pond 1, and the internal circulation pump 31 passes through pipeline and the
Two freezing units 22 connect, and after the internal circulation pump 31 extracts the water in pond 1 out, are carried out by the second freezing unit 22 to water
Cooling down processing.The cooling water is extracted out by cold water suction pump 52 and is flowed back into pond 1 by cold water transport pipeline 12.
Above-mentioned internal circulation pump 31, outer circulation pump 41, circulation suction pump 71 are provided with stand-by pump, stand-by pump respectively with it is interior
Circulating pump 31, outer circulation pump 41, circulation suction pump 71 are in parallel, have stand-by provision when to avoid pump contingency failure, it can also be used to
When cooling cycle water is bigger, while stand-by pump is enabled, increase water pumping amount, improves cooling effect.
Temperature-difference power generation module 81 is additionally provided between the hot water transport pipeline 11 and cold water transport pipeline 12.The temperature difference hair
Electric module 81 is made of muti-piece thermoelectric generation film, and hot water transport pipeline 11 is close in hot end, cold end according to actual installation situation,
It is placed against or near cold water transport pipeline 12, is generated electricity using the temperature difference.The temperature-difference power generation module 81 is also connected with controller 82
With battery 9, the electric energy of generation is stored in otherwise utilized in battery 9.It is of course also possible to which according to the actual situation, the temperature difference is sent out
Electric module 81 is directly connect with each freezing unit or each suction pump, by the thermal energy of generation be converted to electric energy be re-used for refrigeration follow
Ring.
In actual operation, when environment temperature is lower than 20 DEG C, environment self-adjustment energy conservation power is preferable, need to only open outer follow at this time
Loop system, water in pond 1 pump out it is cooling after cool down to epoxy resin production equipment 6, hot water return to pond 1
In recycled, hot water Temperature fall in reflux course；Temperature-difference power generation module 81 is transported using hot water and air/cool water
The temperature difference between pipeline 12 generates electricity, the first freezing unit 21 of driving or each suction pump, to save energy.
When environment temperature is at 20 DEG C or more, the hot water of generation is slower from cooling rate, it is difficult to meet work requirements, this
When open external circulating system and internal circulation system simultaneously, external circulating system while working normally, constantly take out by internal circulation system
It takes and the recirculated water in cooling pond 1, the operating pressure of mitigation the first freezing unit 21 improves cooling efficiency；Thermo-electric generation mould
Block 81 persistently carries out thermo-electric generation, drives each freezing unit or each suction pump, saves energy.
Based on above-mentioned double round robin cooling system, using the utility model prepare epoxy resin the specific process steps are as follows:
1, acid mentions alcohol deposition method, from extracting lignose from papermaking black liquor.
It is by volume that 1:1~1:1.5 is mixed by commercially available black liquid and dehydrated alcohol, 1~3h of water-bath at 45~75 DEG C,
Stratification takes supernatant.By supernatant evaporative removal ethyl alcohol (ethyl alcohol recycling), no alcoholic solution is obtained, into the solution
It is slowly added the concentrated sulfuric acid or concentrated nitric acid, the side Bian Tianjia stirring, until pH=2, the then water-bath again at 45~75 DEG C by the solution
6~7h is heated, is completed until lignin is basically separated precipitating.When being generated in the solution there is no more precipitatings, by solution and precipitating
It is centrifuged, 10000r/min, centrifugation obtained solid is dried to get lignin.
2, modified by cardanol lignin.
(1) in mass ratio it is that 1:1 is mixed by the formalin of the resulting lignin of step 1 and 35%, uses hydroxide
It is 12 that sodium, which adjusts pH, is stirred to react 3h at 95 DEG C, obtains hydroxymethylated lignin.
(2) in step (1) resulting solution containing hydroxymethylated lignin, then plus a certain amount of anacardol, additive amount
For the half of the lignin quality of step (1) addition, 3h is stirred to react at 95 DEG C, after fully reacting, adjusts solution with dilute hydrochloric acid
PH=2 precipitates to obtain modified by cardanol lignin.
3, modified by cardanol lignin synthesis epoxy resin is utilized.
When environment temperature is lower than 20 DEG C, environment capacity of self-regulation is preferable, only opens interior cycle refrigeration system at this time；Environment
Temperature opens internal-external double circulation refrigeration system at 20 DEG C or more.
It is in mass ratio that 1:6~20 add by modified by cardanol lignin and epoxychloropropane after opening cooling cycle system
Enter reaction kettle, stir and be warming up to 50~100 DEG C, adds the hydroxide four that quality is modified by cardanol lignin quality 7%
First ammonium.
Above-mentioned temperature is kept, is stirred on one side, lye (10% sodium hydroxide) is added on one side, additive amount are as follows: 1g anacardol
Modified lignin resin adds 1~5ml lye.When adding lye, adjusts vacuum degree and be reduced to the boiling point for controlling water and epoxychloropropane
Slightly below reaction temperature keeps the temperature 1~5h, acquired solution is adjusted to neutrality with dilute hydrochloric acid, vacuum distillation removes excessive epoxy chlorine
Distillation and concentration object is washed to neutrality, is dried in vacuo to get solid powdery epoxy resin by propane.
Below with reference to specific experiment, the effect of the utility model is shown.
(1) experiment of lignin is extracted
1) lignin is extracted according to above-mentioned epoxy resin preparation process, the other design parameter of each group is as shown in table 1.
Each group design parameter table of table 1
2) in above-mentioned each group, the average yield of lignin is 85.2%, wherein the yield highest of group 4, up to 96.8%.
Therefore, the parameter of group 4 is selected to carry out in subsequent operation.
(2) experiment of modified by cardanol lignin synthesis epoxy resin is utilized
1) lignin is extracted using the method for 1 group 4 of experiment, according still further to above-mentioned epoxy resin preparation process, to extraction
Lignin carries out modified by cardanol and synthesis of solid epoxy resin, and the other design parameter of each group is as shown in table 2.
Each group design parameter table of table 2
2) the other epoxy resin yield of each group and epoxy amount are as shown in table 3.
Each group result of table 3
In the case where organizing 1 parameter, yield and epoxide number effect are best.But applicant operates under the technical solution of the utility model
Shi Faxian, under the parameter of group 13, epoxychloropropane dosage is seldom, and soaking time is shorter, but still can achieve and 1 class of group
Like the even slightly excellent effect with group 1.This may be the property of modified by cardanol lignin, it is also possible to the component of specific quantity
Between unknown role has occurred.
Claims (5)
1. a kind of double round robin cooling system, it is characterised in that: including the external circulating system that is connected with pipeline by pond (1) and interior
The circulatory system；
The external circulating system includes the outer circulation pump (41) to draw water from pond (1), and the outer circulation pump (41) passes through outlet pipe
First freezing unit (21) of the road connection for cooling water, first freezing unit (21) pass through outlet conduit and epoxy resin
Production equipment (6) is connected, the epoxy resin production equipment (6) through hot water suction pump (51) and hot water transport pipeline (11) with it is cold
But ponding tower (10) is connected；The cooling ponding tower (10) is connected by water inlet line with circulation suction pump (71), the circulation
Suction pump (71) is connected by water inlet line with pond (1)；
The internal circulation system includes the internal circulation pump (31) to draw water from pond (1), and the internal circulation pump (31) passes through outlet pipe
Second freezing unit (22) of the road connection for cooling water, second freezing unit (22) is through cold water suction pump (52) and cold water
Transport pipeline (12) is connected with pond (1)；
The double round robin cooling system further includes temperature-difference power generation module (81), and heat is close in the hot end of the temperature-difference power generation module (81)
Water transport pipeline (11).
2. double round robin cooling system according to claim 1, it is characterised in that: the cold end of the temperature-difference power generation module (81)
It is close to cold water transport pipeline (12).
3. double round robin cooling system according to claim 1, it is characterised in that: the temperature-difference power generation module (81) is also connected with
There are controller (82) and battery (9).
4. double round robin cooling system according to claim 1, it is characterised in that: the external circulating system further includes and follows outside
The spare outer circulation pump (42) that ring pump (41) connects side by side and the spare circulation suction pump being connect side by side with circulation suction pump (71)
(72)。
5. double round robin cooling system according to claim 1, it is characterised in that: the internal circulation system further includes following with interior
The spare internal circulation pump (32) that ring pump (31) connects side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821301083.8U CN208871950U (en) | 2018-08-13 | 2018-08-13 | A kind of double round robin cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821301083.8U CN208871950U (en) | 2018-08-13 | 2018-08-13 | A kind of double round robin cooling system |
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| Publication Number | Publication Date |
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| CN208871950U true CN208871950U (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821301083.8U Active CN208871950U (en) | 2018-08-13 | 2018-08-13 | A kind of double round robin cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917267A (en) * | 2018-08-13 | 2018-11-30 | 黄山五环科技有限公司 | A kind of epoxy resin production double round robin cooling system |
-
2018
- 2018-08-13 CN CN201821301083.8U patent/CN208871950U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917267A (en) * | 2018-08-13 | 2018-11-30 | 黄山五环科技有限公司 | A kind of epoxy resin production double round robin cooling system |
| CN108917267B (en) * | 2018-08-13 | 2024-02-27 | 黄山五环科技有限公司 | Dual cycle refrigerating system for epoxy resin production |
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