CN216537407U - Ethoxylation defroster - Google Patents
Ethoxylation defroster Download PDFInfo
- Publication number
- CN216537407U CN216537407U CN202120516024.8U CN202120516024U CN216537407U CN 216537407 U CN216537407 U CN 216537407U CN 202120516024 U CN202120516024 U CN 202120516024U CN 216537407 U CN216537407 U CN 216537407U
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- Prior art keywords
- ethoxylation
- shell
- demister
- reactor
- separator
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- 238000007046 ethoxylation reaction Methods 0.000 title claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 claims description 4
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 12
- 239000002351 wastewater Substances 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
- 238000007872 degassing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- -1 alcohol amine Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Separating Particles In Gases By Inertia (AREA)
Abstract
The utility model relates to an ethoxylation demister, which comprises a shell (1) and a wire mesh separator (2) arranged in the shell (1), wherein the shell (1) comprises a top cover (11) and a main body (12) which are detachably connected, the wire mesh separator (2) is arranged in the main body (12), and the demister is arranged on a vacuum and exhaust main pipeline of the ethoxylation reactor. Compared with the prior art, the utility model has the advantages of efficiently catching and recovering the degassed entrained liquid drops, reducing the product loss, reducing the discharge of waste liquid/waste water and the like.
Description
Technical Field
The utility model relates to the technical field of chemical equipment, in particular to an ethoxylation reaction demister.
Background
The ethoxylation reaction is a ring-opening addition reaction of ethylene oxide and a compound containing active hydrogen under the action of a catalyst, and is the most important reaction in the ethylene oxide fine and further processing industry. The ethoxylation product is widely used in the industries of daily washing, medicine, cosmetics, defoaming agent, concrete water reducing agent and the like. At present, the industrialized ethoxylation reaction device mainly comprises a spray reactor, a stirred tank reactor, a continuous ethoxylation reactor and the like.
In the ethoxylation reaction process, often meet the operation that carries out gaseous phase pressure release or the unreacted ethylene oxide of vacuum desorption part to the reactor of area material, evacuation or pressure release in-process, during partial product liquid drop can enter into vacuum system waste gas along with desorption gas, finally form waste gas washing waste water or vacuum system waste liquid discharge, this process has not only increased waste liquid/waste water volume, increases environmental protection processing pressure, also cause the product to smuggle the loss simultaneously, influence the productivity.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide an ethoxylation reaction demister which can efficiently capture and recover degassed entrained liquid drops, reduce product loss and reduce discharge of waste liquid/wastewater.
The purpose of the utility model can be realized by the following technical scheme: the utility model provides an ethoxylation defroster, includes the casing and sets up the silk screen separator in the casing, the casing including can dismantling top cap and the main part of connection, the silk screen separator set up in the main part, the defroster setting on the vacuum of ethoxylation ware and exhaust main pipeline. When the substitute pressure relief/dehydration/degassing operation of the ethoxylation reactor/container, the discharged gas phase firstly enters the demister, wherein liquid drops of entrained products are captured by the wire mesh separator and are gathered into liquid at the bottom of the demister, the gas phase (the main component is nitrogen) and the entrained products (such as nonionic surfactant) pass through the pores of the wire mesh separator, the gas phase smoothly passes through, the products are adhered to the wire mesh separator due to the viscosity of the products, the gas phase drops to the bottom of the demister after a certain amount of the products are accumulated, then, collected liquid flows back to the reactor through a pipeline at the bottom of the demister, and the product loss and the output of waste liquid and wastewater are reduced. The silk screen separator demountable installation is in the main part, and when the separator seriously blockked up, steam sweeps when unable effective mediation, can dismantle the top cap, takes out the separator and washs or change.
Further, the top cap be connected with the lifting hook, top cap and main part between be provided with the stainless steel winding pad.
Furthermore, the lifting hook is a rotatable lifting hook and is detachably connected with the top cover through a lifting lug. The defroster top cap is dismantled the operation and under the help of rotatable lifting hook, removal and installation that can be convenient reduce the intensity of labour of manual maintenance operation, and single can carry out maintenance operation to shorten maintenance time.
The side wall of the shell is provided with a tangent air inlet, the top of the shell is provided with an air outlet, and the bottom of the shell is provided with a liquid outlet. The tangent air inlet adopts tangent line to admit air, and the gas flow direction rises with the heliciform, has increased gaseous stay between, and great liquid drop is got rid of in spiral rising stage, gets rid of big liquid drop and can reduce separator separation load, and maximize separation effect postpones the separator maintenance cycle. The tangent air inlet is arranged below the silk screen separator.
Further, the tangent line air inlet communicate the vacuum and the exhaust main pipeline of ethoxylation reactor, the liquid outlet communicate the ethoxylation reactor, the gas outlet connect the exhaust gas treatment system. The demister is arranged on a vacuum and exhaust main pipeline of an ethoxylation reactor, when the pressure relief/dehydration/degassing operation of the substitute materials of the reactor/container is carried out, the discharged gas phase firstly enters the demister, entrained product liquid drops are captured by a separator and are gathered into liquid at the bottom of the demister, and then the collected liquid flows back to the reactor through a pipeline at the bottom of the demister, so that the product loss and the output of waste liquid and wastewater are reduced.
Furthermore, a stop valve is arranged between the liquid outlet and the ethoxylation reactor.
The shell is provided with a liquid level meter, and the height of the liquid level meter is lower than that of the tangent air inlet. The setting of level gauge can monitor the liquid level of gathering liquid in the casing, prevents that the liquid level is too high to cause danger.
The top of the shell is also provided with a steam inlet. When the separator is partially blocked due to long-term use and the separation effect is not good, steam can be introduced through the top steam inlet to purge and clean, and the effect of the separator is recovered.
The shell side wall is also provided with a hand hole, and the bottom of the shell is provided with a support leg. The hand hole is located silk screen separator below, is close to the silk screen separator, and the silk screen separator inside the casing can be convenient for install, dismantle, wash and overhaul in the setting in hand hole.
The shell is made of austenitic stainless steel, and the wire mesh separator is made of stainless steel wire coils. The porosity of the screen separator reaches 600 meshes. Considering the product quality, the demister is made of austenitic stainless steel.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, through the arrangement of the demisters on the vacuum and exhaust main pipelines of the ethoxylation reactor, liquid drops carried in degassing can be captured and recovered, the proportion of product liquid drops entering a vacuum system or waste gas is reduced, the discharge amount of waste liquid or waste water is reduced, and the environmental pollution is reduced;
2. the demister can efficiently capture and recover degassed entrained liquid drops through the matching design of the tangent gas inlet separation large liquid drops and the wire mesh separator, reduces product loss, reduces waste liquid/wastewater discharge, can reduce the separation load of the separator, maximizes the separation effect and delays the maintenance period of the separator;
3. according to the utility model, through the detachable connection arrangement of the top cover and the main body of the shell and the detachable arrangement of the screen separator, the screen separator has the characteristics of quick opening and cleaning without detaching the body, the maintenance time of the demister is shortened, and the production efficiency is improved;
4. according to the utility model, the connection arrangement of the demister top cover and the rotatable lifting hook enables the dismounting operation of the demister top cover to be carried out with the help of the rotatable lifting hook, the demister top cover can be conveniently removed and installed, the labor intensity of manual maintenance operation is reduced, the maintenance operation can be carried out by one person, and the maintenance time is shortened;
5. according to the utility model, through the arrangement of the steam inlet on the top of the shell, when the separator is partially blocked and the separation effect is poor due to long-time use, steam can be introduced through the steam inlet on the top to purge and clean, so that the effect of the separator is recovered, and the device is convenient and rapid;
6. the vacuum liquid-collecting device has no rotating part, is convenient to maintain in structure, can automatically and efficiently capture liquid drops of a product brought out in a vacuum manner, can effectively reduce the product loss and the maintenance cost, reduce the output of waste liquid and waste water, and improve the environmental protection benefit;
7. according to the utility model, the demister and the ethoxylation reactor are separated in the processes of demister maintenance and repair by arranging the stop valve between the liquid outlet and the ethoxylation reactor, and liquid can be accumulated in the demister shell by closing, and is opened after accumulated to a certain degree, so that the liquid flows back into the reactor under the action of gravity.
Drawings
FIG. 1 is a first schematic structural view of an ethoxylation demister of the present invention;
FIG. 2 is a schematic structural diagram II of an ethoxylation demister according to the present invention;
in the figure: 1-shell, 11-top cover, 12-main body, 2-wire mesh separator, 3-lifting hook, 31-lifting lug, 4-tangential air inlet, 5-air outlet, 6-liquid outlet, 7-steam inlet, 8-liquid level meter, 9-hand hole and 10-supporting leg.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments. The following examples are carried out on the premise of the technical scheme of the utility model, and detailed embodiments and specific operation procedures are given, but the scope of the utility model is not limited to the following examples.
Example 1
The utility model provides an ethoxylation defroster, including casing 1 and demountable installation at the silk screen separator 2 in casing 1, casing diameter 900mm, draw ratio is 1.5, as shown in fig. 1 ~ 2, be equipped with tangent line air inlet 4 on casing 1, gas outlet 5, liquid outlet 6 and steam inlet 7, casing 1 is including dismantling top cap 11 and main part 12 of connection, tangent line air inlet 4 sets up on the lateral wall of main part 12, gas outlet 5 and steam inlet 7 set up on top cap 11, liquid outlet 6 sets up the bottom at main part 12, wherein, tangent line air inlet 4 is connected at 50m air inlet 43And an air outlet 5 is connected to a vacuum pump inlet pipeline on a vacuum and exhaust main pipeline of the ethoxylation reactor system. Resulting in the wire separator 2 portion being used for a long timeWhen the separation effect is poor due to blockage, high-pressure steam can enter the shell 1 through the steam inlet 7 to blow and clean the screen separator 2, and the effect of the screen separator 2 is recovered.
The wire separator 2 is horizontally arranged at the upper part of the main body 12, and is higher than the tangential air inlet 4. Still be equipped with hand hole 9 and level gauge 8 on main part 12, hand hole 9 is close to silk screen separator 2, easy to assemble, dismantles, washs and overhauls silk screen separator 2, and level gauge 8 is located tangent line air inlet 4 below, prevents that the liquid level is too high in the defroster to cause danger, and many landing legs 10 symmetries set up in main part 12 bottom. Still be provided with lug 31 on top cap 11, top cap 11 can be dismantled through lug 31 and be connected with lifting hook 3, and lifting hook 3 is rotatable, and the dismantlement operation of top cap 11 can be convenient remove and install under rotatable lifting hook 3's help, reduces the intensity of labour of manual maintenance operation, and single can carry out the maintenance operation to shorten maintenance time.
The recovery rate of the ethoxylation reaction demister to the non-ionic surfactant with the viscosity of 5-200 cp reaches 99%, the discharge capacity of waste liquid/waste water can be reduced by 90%, and the service life can reach 20 years.
Example 2
The utility model provides an ethoxylation defroster, includes casing 1 and demountable installation at the silk screen separator 2 of casing 1 in, and casing diameter 900mm, draw ratio are 1.5, connect tangential air inlet 4 of this embodiment ethoxylation defroster at 30m3On the vacuum and the exhaust main pipeline of ethoxylation reactor system, gas outlet 5 is connected on vacuum pump inlet pipeline/blow-down pipeline, and all the other structures are the same with embodiment 1, and the rate of recovery of this embodiment ethoxylation defroster to the polyether product that viscosity is 50 ~ 500cp reaches 99%, and waste liquid/waste water discharge capacity reducible 92%, life can reach 20 years.
Example 3
The utility model provides an ethoxylation defroster, includes casing 1 and demountable installation at the silk screen separator 2 of casing 1 in, and casing diameter 550mm, draw ratio are 2.2, connect tangential air inlet 4 of this embodiment ethoxylation defroster at 3m3Vacuum and exhaust lines of an ethoxylation reactor system, and other structures and implementationsThe same as example 1, the recovery rate of the ethoxylation demister reaches 99% for alcohol amine products with the viscosity of 1-500 cp, the discharge capacity of waste liquid/waste water can be reduced by 95%, and the service life can reach 20 years.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The utility model provides an ethoxylation defroster, its characterized in that includes casing (1) and silk screen separator (2) of setting in casing (1), casing (1) including can dismantling top cap (11) and main part (12) of connection, silk screen separator (2) set up in main part (12), the defroster set up on ethoxylation reactor's vacuum and exhaust main pipeline.
2. The ethoxylation demister according to claim 1, wherein a lifting hook (3) is connected to the top cover (11), and a stainless steel winding pad is arranged between the top cover (11) and the main body (12).
3. The ethoxylation demister according to claim 2, wherein the lifting hook (3) is a rotatable lifting hook and is detachably connected with the top cover (11) through a lifting lug (31).
4. The ethoxylation demister according to claim 1, wherein the side wall of the shell (1) is provided with a tangential air inlet (4), an air outlet (5) at the top and a liquid outlet (6) at the bottom.
5. The ethoxylation demister as set forth in claim 4, wherein the tangential gas inlet (4) is connected to the vacuum and exhaust main lines of the ethoxylation reactor, the liquid outlet (6) is connected to the ethoxylation reactor, and the gas outlet (5) is connected to a waste gas treatment system.
6. The ethoxylation demister according to claim 5, wherein a shut-off valve is provided between the liquid outlet (6) and the ethoxylation reactor.
7. The ethoxylation demister according to claim 4, wherein a liquid level meter (8) is arranged on the shell (1), and the height of the liquid level meter (8) is lower than that of the tangential air inlet (4).
8. The ethoxylation demister according to claim 1, wherein the top of the shell (1) is further provided with a steam inlet (7).
9. The ethoxylation demister according to claim 1, wherein a hand hole (9) is further provided on the side wall of the shell (1), and a leg (10) is provided at the bottom of the shell (1).
10. The ethoxylation mist eliminator as set forth in claim 1 wherein the housing (1) is constructed of austenitic stainless steel and the wire mesh separator (2) is constructed of stainless steel wire coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120516024.8U CN216537407U (en) | 2021-03-11 | 2021-03-11 | Ethoxylation defroster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120516024.8U CN216537407U (en) | 2021-03-11 | 2021-03-11 | Ethoxylation defroster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216537407U true CN216537407U (en) | 2022-05-17 |
Family
ID=81536556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120516024.8U Active CN216537407U (en) | 2021-03-11 | 2021-03-11 | Ethoxylation defroster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216537407U (en) |
-
2021
- 2021-03-11 CN CN202120516024.8U patent/CN216537407U/en active Active
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