CN209005253U - A kind of production polyether polyol device for recovering tail gas - Google Patents
A kind of production polyether polyol device for recovering tail gas Download PDFInfo
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- CN209005253U CN209005253U CN201821350679.7U CN201821350679U CN209005253U CN 209005253 U CN209005253 U CN 209005253U CN 201821350679 U CN201821350679 U CN 201821350679U CN 209005253 U CN209005253 U CN 209005253U
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Abstract
The utility model discloses a kind of production polyether polyol device for recovering tail gas, including the first condensation kettle, air inlet pipe is provided on first condensation kettle, first condensation kettle is connected with the first collecting tank, first condensation kettle is connected with the first water cooler, first condensation kettle is connected with hydrolytic reaction pot, hydrolytic reaction pot is connected with spray kettle, spray kettle top portion is provided with spray column, exhaust outlet is provided at the top of spray column, spray column is connected with water storage box, spray bottom portion is connected with hydrolytic reaction pot and water storage box, water inlet pipe is provided on water storage box, distillation still is connected with buffer tank, drainpipe is provided on buffer tank, buffer tank is connected with hydrolytic reaction pot, distillation still is connected with the second condensation kettle, second condensation kettle is connected with the second collecting tank, the second recovery tube is provided on second collecting tank, second condensation kettle connects the second water cooler.The utility model makes full use of EO and PO in tail gas, greatly reduces the discharge amount of EO and PO in tail gas, energy conservation and environmental protection.
Description
Technical field
The utility model relates to tail gas recycle technical field, in particular to a kind of production polyether polyol is filled with tail gas recycle
It sets.
Background technique
Polyether polyol is a kind of environmental protective chemical industry raw material, is chiefly used in manufacturing soft, hard and semi-hard polyurethane foam plastic
Material, is widely used in the fields such as refrigerator, refrigerator-freezer, refrigerator car, thermal insulation board, pipe insulation, industrially prepared polyether polyol is not only former
Material is easy to get, low in cost, and polyether polyol finished product toxicity very little, non-explosive, with polyether polyol application range
Constantly expand, production yields increases accordingly.Main former material of the ethylene oxide EO and propylene oxide PO as synthesizing polyether glycol
One of material, due to reacting insufficient and volatile characteristic, tail gas includes toxic EO during industrial production polyether polyol
Or PO.
Application No. is 201721023510.6, patent name is a kind of exhaust treatment system of polyethers device, including with it is poly-
The engine manifold of ether device connection, respectively high-temperature tail gas general pipeline, room temperature engine manifold, high-temperature tail gas general pipeline are sequentially connected heat exchange
Device, surge tank, room temperature engine manifold connect surge tank, and the top gas phase of surge tank connects absorption tower, the bottom of the bottom of surge tank
Portion's liquid phase connects external waste water disposal facility.Liquid phase in the tower reactor of absorption tower is filled by the spray in circulating pump and absorption tower tower top
Connection is set, absorption tower tower top is equipped with the tail gas discharging pipe of inside and outside connection.The utility model can effective alignment processing high temperature and often
Tail gas under temperature state.
But the device during handling tail gas only by condensation and shower water absorb tail gas in EO or PO after directly
It is discharged into atmosphere, when for EO or PO in tail gas containing high concentration, since EO and PO are volatile, and PO is only partially soluble in
Water causes exhaust emissions exceeded, pollutes environment, and EO and PO form waste water after being dissolved in water, not only waste EO and PO raw material, but also
The waste water of formation is toxic, it is difficult to handle.
Utility model content
The main purpose of the utility model is to provide a kind of production polyether polyol device for recovering tail gas, can be sufficiently sharp
With the EO and PO in tail gas, greatly reduce the discharge amount of EO and PO in tail gas, reduces the wasting of resources, it is energy saving.
To achieve the above object, the technical solution that the utility model is taken are as follows:
A kind of production polyether polyol device for recovering tail gas, including the first condensation kettle, the first collecting tank, the first water cooling
Device, hydrolytic reaction pot, spray kettle, spray column, water storage box, distillation still, buffer tank, the second condensation kettle, the second collecting tank and the
Two water coolers, first condensation kettle left side wall bottom are provided with air inlet pipe, and first condensation bottom portion drain side passes through pipe
Road is connected with the liquid feeding end of the first collecting tank, and the first valve is provided on the pipeline, and described first collects pot bottom setting
There is the first recovery tube, the second valve be provided on first recovery tube, connects the first water cooler on the left of the first condensation kettle,
The first condensation kettle top portion exhaust end is connected to hydrolytic reaction pot inlet end by pipeline, and the pipeline protrudes into hydrolytic reaction pot
Intracavity bottom, hydrolytic reaction pot top vent end are connected to by pipeline with the inlet end for spraying kettle, the spray kettle top portion
It is provided with spray column, exhaust outlet is provided at the top of the spray column, the spray column liquid feeding end passes through pipeline and water storage box drain
End connection, and the first water pump is provided on the pipeline, the spray bottom portion drain side passes through pipeline and hydrolytic reaction pot respectively
It is connected with the liquid feeding end of water storage box, is provided with third valve on the pipeline between the spray kettle and hydrolytic reaction pot, it is described
The 4th valve is provided on pipeline between spray kettle and water storage box, the water storage box top right side is provided with water inlet pipe, and into
The 5th valve is provided on water pipe, hydrolytic reaction pot bottom drain side is connected by pipeline with the liquid feeding end of distillation still,
And the 11st valve and third water pump have been set gradually from left to right on the pipeline, distillation still bottom drain side passes through pipeline
It is connected with the liquid feeding end of buffer tank, and is provided with the 6th valve on the pipeline, the setting of buffer tank right side wall bottom end
There is drainpipe, be provided with the 7th valve on the drainpipe, the buffer tank drain side passes through pipeline and hydrolytic reaction pot
Liquid feeding end is connected, and is disposed with the second water pump and the 8th valve on the pipeline from right to left, row at the top of the distillation still
Gas end is connected by pipeline with the inlet end of the second condensation kettle, and second condensation bottom portion drain side passes through pipeline and second
The liquid feeding end of collecting tank is connected, and nine valves are provided on the pipeline, and the second collection pot bottom is provided with the second recycling
Pipe, and the tenth valve is provided on the second recovery tube, the second water cooler is connected on the right side of the second condensation kettle.
Preferably, the spray column bosom is provided with equally distributed spray head, is provided with work right above the spray head
Property charcoal filter layer, and activated carbon filter layer is located at below exhaust outlet, and activated carbon filter layer can be adsorbed to be generated by spray head water spray
Exhaust gas mixes small water droplet, improves exhaust-gas treatment effect.
Preferably, first water cooler and the second water cooler are provided in the spiral helicine condenser pipe that gathers, and are increased useless
The contact area of gas and condenser pipe improves condensation effect, cooling liquid of the completion as much as possible to organic gas.
Preferably, the condenser pipe is uniformly distributed from bottom to top in the first water cooler and the second water cooler inner cavity, and is condensed
Pipe is in inverted conical shape, and the liquid after making cooling liquid is assembled to centre, is easy to drop onto the first condensation kettle and the second condensation bottom
Portion.
Preferably, hydrolytic reaction pot inner cavity left side wall is provided with water level sensor, and water level sensor height is lower than
Hydrolytic reaction pot right side wall pipe outlet, water level sensor can guarantee hydrolytic reaction pot inner cavity liquid level lower than right side wall pipe
The height of road outlet, prevents reaction solution from flowing into hydrolytic reaction pot right side wall pipeline.
Compared with prior art, the utility model has the following beneficial effects:
1, the utility model is good to EO or PO recovering effect in polyether polyol tail gas, EO the or PO amount being discharged into atmosphere
Very little, tail gas by the first condensation kettle can condensing recovery major part liquid EO or PO, part EO or PO enter hydrolytic reaction pot,
By being added, acid catalysis EO or PO generate ethylene glycol or propylene glycol recycling, remaining minority EO or PO are handled by spray column ejection
It is filtered with activated carbon filter layer, the amount containing EO or PO is few in the tail gas of discharge；
2, the utility model is high to EO or PO recovery utilization rate in polyether polyol tail gas, EO or PO wastage is few, exhaust gas
Nuisance is few in waste water, most of EO or PO by being collected in the first collecting tank after the first condensation kettle condensation, as purity compared with
High liquid phase EO or PO can be re-used for production polyether polyol, and the ethylene glycol generated in hydrolytic reaction pot or propylene glycol are through steaming
After evaporating, condensing, the ethylene glycol or propylene glycol of liquid phase are collected in the second collecting tank, can be used as raw material of industry use；
3, water resource and acid catalyst is recycled in the utility model, reduces water resource waste, saves production cost, first
Pipeline connection spray kettle, spray column and water storage box are first passed through, water circulation is formed, reduces water usage amount, then connected by pipeline
Hydrolytic reaction pot, spray kettle, distillation still and buffer tank, form the circulatory system, can reuse water and acid catalyst.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the first water cooler cross-sectional view of the utility model；
Fig. 3 is the first water cooler top view of the utility model.
In figure: 1, the first condensation kettle；2, the first collecting tank；3, the first water cooler；4, hydrolytic reaction pot；5, kettle is sprayed；6,
Spray column；601, spray head；602, activated carbon filter layer；7, water storage box；8, distillation still；9, buffer tank；10, the second condensation kettle；
11, the second collecting tank；12, the second water cooler；13, air inlet pipe；14, the first valve；15, the first recovery tube；16, the second valve；
17, the first water pump；18, third valve；19, the 4th valve；20, water inlet pipe；21, the 5th valve；22, drainpipe；23, the 6th valve
Door；24, the 7th valve；25, the second water pump；26, the 8th valve；27, the second recovery tube；28, the 9th valve；29, the tenth valve；
30, condenser pipe；31, water level sensor；32, exhaust outlet；33, the 11st valve；34, third water pump.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-3, a kind of production polyether polyol device for recovering tail gas, including the first condensation kettle 1, first are collected
Tank 2, the first water cooler 3, hydrolytic reaction pot 4, spray kettle 5, spray column 6, water storage box 7, distillation still 8, buffer tank 9, second are cold
Solidifying kettle 10, the second collecting tank 11 and the second water cooler 12, the first condensation 1 left side wall bottom of kettle are provided with air inlet pipe 13, and first is cold
Solidifying 1 bottom drain side of kettle is connected by pipeline with the liquid feeding end of the first collecting tank 2, and the first valve is provided on the pipeline
14,2 bottom of the first collecting tank is provided with the first recovery tube 15, and the second valve 16, the first condensation are provided on the first recovery tube 15
The first water cooler 3 is connected on the left of kettle 1, the first condensation 1 top vent end of kettle is connected to 4 inlet end of hydrolytic reaction pot by pipeline,
And the pipeline protrudes into 4 intracavity bottom of hydrolytic reaction pot, 4 inner cavity left side wall of hydrolytic reaction pot is provided with water level sensor 31, and water
Position 31 height of inductor is lower than 4 right side wall pipe outlet of hydrolytic reaction pot, and water level sensor 31 can guarantee in hydrolytic reaction pot 4
Chamber liquid level is lower than the height of right side wall pipe outlet, prevents reaction solution from flowing into 4 right side wall pipeline of hydrolytic reaction pot, and hydrolysis is anti-
It answers 4 top vent end of kettle to be connected to by pipeline with the inlet end for spraying kettle 5, sprays and be provided with spray column 6 at the top of kettle 5, and spray
6 bosom of tower is provided with equally distributed spray head 601, and activated carbon filter layer 602, and activity are provided with right above spray head 601
Charcoal filter layer 602 is located at 32 lower section of exhaust outlet, and activated carbon filter layer 602 can be adsorbed to be mixed by the exhaust gas that the water spray of spray head 601 generates
Small water droplet is closed, exhaust-gas treatment effect is improved, exhaust outlet 32 is provided at the top of spray column 6,6 liquid feeding end of spray column is by pipeline and stores
The connection of 7 drain side of water tank, and the first water pump 17 is provided on the pipeline, spray 5 bottom drain side of kettle passes through pipeline and water respectively
Solution reaction kettle 4 is connected with the liquid feeding end of water storage box 7, sprays and is provided with third valve on the pipeline between kettle 5 and hydrolytic reaction pot 4
Door 18 sprays and is provided with the 4th valve 19 on the pipeline between kettle 5 and water storage box 7, and 7 top right side of water storage box is provided with water inlet pipe
20, and the 5th valve 21 is provided on water inlet pipe 20,4 bottom drain side of hydrolytic reaction pot passes through the feed liquor of pipeline and distillation still 8
End is connected, and the 11st valve 33 and third water pump 34 have been set gradually from left to right on the pipeline, 8 bottom drain of distillation still
End is connected by pipeline with the liquid feeding end of buffer tank 9, and the 6th valve 23 is provided on the pipeline, 9 right side of buffer tank
Wall bottom end is provided with drainpipe 22, and the 7th valve 24 is provided on drainpipe 22, and 9 drain side of buffer tank passes through pipeline and hydrolysis
The liquid feeding end of reaction kettle 4 is connected, and is disposed with the second water pump 25 and the 8th valve 26 on the pipeline from right to left, distillation
8 top vent end of kettle is connected by pipeline with the inlet end of the second condensation kettle 10, and the second condensation 10 bottom drain side of kettle passes through
Pipeline is connected with the liquid feeding end of the second collecting tank 11, and nine valves 28 are provided on the pipeline, and 11 bottom of the second collecting tank is set
It is equipped with the second recovery tube 27, and is provided with the tenth valve 29 on the second recovery tube 27, connects the second water on the right side of the second condensation kettle 10
Cooler 12.Wherein, the first water cooler 3 and the second water cooler 12 are provided in the spiral helicine condenser pipe 30 that gathers, and increase exhaust gas
With the contact area of condenser pipe 30, condensation effect, cooling liquid of the completion as much as possible to organic gas are improved, and is condensed
Pipe 30 is uniformly distributed from bottom to top in the first water cooler 3 and 12 inner cavity of the second water cooler, and condenser pipe 30 is in inverted conical shape, is made cold
But the liquid after liquefying is assembled to centre, is easy to drop onto the first condensation kettle 1 and the second condensation 10 bottom of kettle
One of the present embodiment has particular application as, the utility model is designed reasonably, and tail gas enters first by air inlet pipe 13
Kettle 1 is condensed, 1 bottom of the first condensation kettle is collected into after the condensation of condenser pipe 30 containing EO or PO gas, after opening the first valve 14, receives
Collect in the first collecting tank 2, when need to be re-used for production polyether polyol as raw material, the second valve 16 is opened, by first time
Closed tube 15 is discharged, and most of EO or PO can be made to liquefy in the first condensation kettle 1 and recycled.In tail gas uncooled gas phase EO or PO by
First condensation 1 top vent end of kettle is extend into 4 liquid level of hydrolytic reaction pot pipeline below and is entered in the water containing acid catalyst, is urged
Change EO or PO and hydrolysis occurs, form the ethylene glycol or propylene glycol for being dissolved in water, the 11st valve 33 is opened, by third water pump 34
Enter the mixed liquor containing ethylene glycol or propylene glycol in distillation still 7 to distill, the ethylene glycol or propylene glycol of volatilization are through 7 top of distillation still
Pipeline enter in the second condensation kettle 10 and condense, be collected into behind 10 bottom of the second condensation kettle and open the storage of the 9th valve 28 to second
In collecting tank 11, then opens the tenth valve 29 and recycled through the second recovery tube 27.Remaining mixed liquor is by beating in distillation still 7
The 6th valve 23 and the 8th valve 26 are opened, is acted on by the second water pump 25, is back in hydrolytic reaction pot 4 and re-uses.It is hydrolyzing
Unreacted tail gas enters in spray kettle 5 and spray column 6 through the pipeline at 4 top of hydrolytic reaction pot and is sprayed by spray head 601 in reaction kettle 4
Water mist out, further the gas phase EO or PO in water-soluble tail gas, open the 4th valve 19, are acted on by the first water pump 17, make to spray kettle 5
It is used with liquid circulation in water storage box 7, after EO or PO content reaches a certain level in circulation fluid, opens third valve 18, make
Circulation fluid enters hydrolytic reaction pot 4 and hydrolysis occurs, and is opening 21 amount of makeup water of the 5th valve on water inlet pipe 20.Work as hydrolysis
When liquid level reaches the height of water level sensor 31 in reaction kettle 4, the 7th valve 24 is opened, the liquid warp in buffer tank 9
Drainpipe 22 is collected after being discharged, and the liquid level of hydrolytic reaction pot 4 is made to maintain water level sensor 31 hereinafter, avoiding hydrolysis
Mixed liquor in kettle 4 is through in the liquid feeding end flowing into pipeline of right side wall.Tail gas after spraying is again by 602 mistake of activated carbon filter layer
Tail gas is discharged from exhaust outlet 32 in filter, and amount of the tail gas containing EO or PO at this time is few.
The Model of pump WZB-35 that the present embodiment uses, water level sensor model SJ-K3, other the present embodiment that meet make
With desired electric elements, and the first condenser, the second condenser, valve, water pump and water level sensor be provided with
Its control switch to match, and the installation site of control switch can be selected according to actual needs.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
Claims (1)
1. a kind of production polyether polyol device for recovering tail gas, including the first condensation kettle (1), the first collecting tank (2), the first water
Cooler (3), hydrolytic reaction pot (4), spray kettle (5), spray column (6), water storage box (7), distillation still (8), buffer tank (9), the
Two condensations kettle (10), the second collecting tank (11) and the second water cooler (12), it is characterised in that: on the left of first condensation kettle (1)
Wall bottom is provided with air inlet pipe (13), first condensation kettle (1) the bottom drain side by pipeline and the first collecting tank (2) into
Liquid end is connected, and the first valve (14) are provided on the pipeline, and the first collecting tank (2) bottom is provided with the first recovery tube
(15), it is provided with the second valve (16) on first recovery tube (15), connects the first water cooling on the left of first condensation kettle (1)
Device (3), first condensation kettle (1) top vent end is connected to hydrolytic reaction pot (4) inlet end by pipeline, and the pipeline is stretched
Enter hydrolytic reaction pot (4) intracavity bottom, the air inlet that hydrolytic reaction pot (4) the top vent end passes through pipeline and spray kettle (5)
End connection, spray kettle (5) top are provided with spray column (6), are provided with exhaust outlet (32), institute at the top of the spray column (6)
It states spray column (6) liquid feeding end to be connected to by pipeline with water storage box (7) drain side, and is provided with the first water pump (17) on the pipeline,
Described spray kettle (5) bottom drain side passes through pipeline respectively and is connected with the liquid feeding end of hydrolytic reaction pot (4) and water storage box (7),
It is provided with third valve (18) on pipeline between spray kettle (5) and hydrolytic reaction pot (4), the spray kettle (5) and storage
The 4th valve (19) is provided on pipeline between water tank (7), water storage box (7) top right side is provided with water inlet pipe (20),
And the 5th valve (21) is provided on water inlet pipe (20), hydrolytic reaction pot (4) the bottom drain side passes through pipeline and distillation still
(8) liquid feeding end is connected, and the 11st valve (33) and third water pump (34), institute have been set gradually from left to right on the pipeline
It states distillation still (8) bottom drain side and is connected by pipeline with the liquid feeding end of buffer tank (9), and be provided with the 6th on the pipeline
Valve (23), buffer tank (9) the right side wall bottom end are provided with drainpipe (22), are provided with the 7th on the drainpipe (22)
Valve (24), buffer tank (9) drain side is connected by pipeline with the liquid feeding end of hydrolytic reaction pot (4), and the pipeline
On be disposed with the second water pump (25) and the 8th valve (26) from right to left, distillation still (8) the top vent end passes through pipe
Road is connected with the inlet end of the second condensation kettle (10), and second condensation kettle (10) the bottom drain side is received by pipeline and second
The liquid feeding end of collection tank (11) is connected, and nine valves (28) are provided on the pipeline, the second collecting tank (11) bottom setting
Have the second recovery tube (27), and be provided with the tenth valve (29) on the second recovery tube (27), on the right side of second condensation kettle (10)
It connects the second water cooler (12), hydrolytic reaction pot (4) inner cavity left side wall is provided with water level sensor (31), and water level incudes
Device (31) is highly lower than hydrolytic reaction pot (4) right side wall pipe outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821350679.7U CN209005253U (en) | 2018-08-21 | 2018-08-21 | A kind of production polyether polyol device for recovering tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821350679.7U CN209005253U (en) | 2018-08-21 | 2018-08-21 | A kind of production polyether polyol device for recovering tail gas |
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| Publication Number | Publication Date |
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| CN209005253U true CN209005253U (en) | 2019-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821350679.7U Active CN209005253U (en) | 2018-08-21 | 2018-08-21 | A kind of production polyether polyol device for recovering tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113058382A (en) * | 2021-02-23 | 2021-07-02 | 中国科学院过程工程研究所 | Recovery device system and recovery method for effective components in tail gas |
-
2018
- 2018-08-21 CN CN201821350679.7U patent/CN209005253U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113058382A (en) * | 2021-02-23 | 2021-07-02 | 中国科学院过程工程研究所 | Recovery device system and recovery method for effective components in tail gas |
| CN113058382B (en) * | 2021-02-23 | 2022-06-21 | 中国科学院过程工程研究所 | Recovery device system and recovery method for effective components in tail gas |
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