CN208694943U - Methylene chloride and chloroform plus alkali deacidification device - Google Patents
Methylene chloride and chloroform plus alkali deacidification device Download PDFInfo
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- CN208694943U CN208694943U CN201821287144.XU CN201821287144U CN208694943U CN 208694943 U CN208694943 U CN 208694943U CN 201821287144 U CN201821287144 U CN 201821287144U CN 208694943 U CN208694943 U CN 208694943U
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- alkali
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- methylene chloride
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Abstract
A kind of methylene chloride and chloroform plus alkali deacidification device, including head tank, methylene chloride alkali cleaning pump, chloroform alkali cleaning pump, methylene chloride azeotropic separation device and chloroform azeotropic separation device, dichloro, chloroform alkali cleaning pump is located in same level, head tank is located at dichloro, the chloroform alkali cleaning pump top at least position 30m, the bottom of head tank is equipped with first, second adds alkali pipeline, the input end of methylene chloride alkali cleaning pump is equipped with methylene chloride feed pipe, outlet end is connected to methylene chloride azeotropic separation device, first adds the upstream end of alkali pipeline to be equipped with the first valve, downstream is in parallel with methylene chloride feed pipe, first adds alkali pipeline to be equipped with first flowmeter, the input end of chloroform alkali cleaning pump is equipped with chloroform feed pipe, outlet end is connected to chloroform azeotropic separation device, second adds the upstream end of alkali pipeline Equipped with the second valve, downstream is in parallel with chloroform feed pipe, and second adds alkali pipeline to be equipped with second flowmeter.
Description
Technical field
The utility model relates to methane chloride production field, in particular to a kind of methylene chloride and chloroform plus alkali
Deacidification device.
Background technique
In the production process of methane chloride, the methylene chloride for meeting standard and chloroform are obtained, needs to pass through chlorine
Change reaction and obtain the thick chloride of two trichlorines, then by the way that rectifying column purification plus alkali remove free acid, azeotropic drying is removed water and closed
The product of lattice.During adding alkali except free acid, 7%~8% lye is conveyed respectively to methylene chloride with piston type metering pump
Import with chloroform alkali cleaning pump passes through dichloromethane after mixing refined methylene chloride and chloroform with this lye
The alkali cleaning pump of alkane and chloroform is thoroughly mixed, and so that methylene chloride and chloroform is refined the free acid contained later thorough
It removes, the separation of material and lye is carried out into azeotropic separation device.After controlling the certain liquid level of material, the lye on upper layer passes through overflow
Mouth outflow, the material of lower layer are delivered to after vaporizing partial material and water formation azeotropic mixture with the azeotrope column of hot water heating by pump
It escapes from tower top, is returned in azeotropic separation device after the condenser condensation by azeotrope column.Azeotropic tower bottom is aqueous after azeotropic
It measures lower material and drains into detection slot, after the sampled qualification of intermediate products, be delivered to finished product tank field and stored as product.?
In current production process, there is the back pressure of about 0.1MPa on alkali pipeline due to adding, and flux of alkaline liquor is unstable causes stress wave
It is dynamic, cause unstable into alkali number, causes to deacidify ineffective.When lye delivery pump is found not in time since failure is not run
When, it may appear that since methylene chloride is different with the back pressure of chloroform alkali cleaning pipeline, methylene chloride and chloroform flushing are caused,
Reduce product quality.
Summary of the invention
The purpose of this utility model be in view of the deficiencies of the prior art, provide a kind of methylene chloride and chloroform plus alkali
Deacidification device, structure is simple, easy to use, and alkali cleaning is stable into alkali number, continues, and guarantees methylene chloride, chloroform deacidification effect
Fruit guarantees product quality in addition, also can effectively avoid methylene chloride, chloroform flushing.
The technical solution of the utility model is: a kind of methylene chloride and chloroform plus alkali deacidification device, including a high position
Slot, methylene chloride alkali cleaning pump, chloroform alkali cleaning pump, methylene chloride azeotropic separation device and chloroform azeotropic separation device, it is described
Methylene chloride alkali cleaning pump, chloroform alkali cleaning pump are located in same level, and head tank is located at methylene chloride alkali cleaning pump, three chloromethanes
The alkane alkali cleaning pump top at least position 30m, the side wall of the head tank are equipped with alkali inlet tube road, and the bottom of head tank is equipped with to downward
First stretched adds alkali pipeline, second plus alkali pipeline, and the input end of the methylene chloride alkali cleaning pump is equipped with for cold with methylene chloride
But the outlet end of the methylene chloride feed pipe of device connection, methylene chloride alkali cleaning pump is total by first material pipeline and methylene chloride
The input end connection of separator is boiled, described first adds the upstream end of alkali pipeline to be equipped with the first valve, and first adds the downstream of alkali pipeline
End is in parallel with methylene chloride feed pipe, and first adds alkali pipeline to be equipped with first flowmeter, and the downstream of first flowmeter is equipped with
First regulating valve, the input end of chloroform alkali cleaning pump be equipped with the chloroform for being connect with chloroform cooler into
The outlet end of pipe material, chloroform alkali cleaning pump is connected by the input end of second material pipeline and chloroform azeotropic separation device
Logical, described second adds the upstream end of alkali pipeline to be equipped with the second valve, and second adds the downstream of alkali pipeline and chloroform feed pipe
Road is in parallel, and second adds alkali pipeline to be equipped with second flowmeter, and the downstream of second flowmeter is equipped with the second regulating valve.
The upstream end of the first flowmeter is equipped with the first maintenance valve, and the first maintenance valve uses ball valve.
The upstream end of the second flowmeter is equipped with the second maintenance valve, and the second maintenance valve uses ball valve.
It is horizontal-extending by one after described first adds the upstream end of alkali pipeline, second to add the upstream end of alkali pipeline in parallel
Alkali outlet pipe road is connected to high-order trench bottom, and the alkali outlet pipe road is equipped with third valve.
First valve, the second valve, the first regulating valve, the second regulating valve are all made of ball valve.
The upstream end in the alkali inlet tube road is horizontally extending, and the downstream in alkali inlet tube road extends downwards, with height
The upper portion side wall connection of position slot.
The methylene chloride feed pipe, chloroform feed pipe difference are horizontally extending.
It has the advantages that by adopting the above technical scheme
1, methylene chloride and chloroform plus alkali deacidification device include head tank, methylene chloride alkali cleaning pump, chloroform
Alkali cleaning pump, methylene chloride azeotropic separation device and chloroform azeotropic separation device, wherein head tank is for containing lye, and difference
To methylene chloride alkali cleaning pump, chloroform alkali cleaning pump conveying lye, make refined methylene chloride and chloroform respectively two
It is sufficiently mixed in chloromethanes alkali cleaning pump, chloroform alkali cleaning pump with lye, thoroughly removes the free acid contained, enter back into azeotropic point
From the separation that device carries out material and lye.The methylene chloride alkali cleaning pump, chloroform alkali cleaning pump are located in same level, high
Position slot position in methylene chloride alkali cleaning pump, the chloroform alkali cleaning pump top at least position 30m, the side wall of the head tank be equipped with into
Alkali pipeline, the bottom of head tank is equipped with first extended downwardly plus alkali pipeline, second plus alkali pipeline, lye are stored up by alkali inlet tube road
There are the lye in head tank, being stored in head tank to respectively enter lower section by first plus alkali pipeline, second plus alkali pipeline
In methylene chloride alkali cleaning pump, chloroform alkali cleaning pump.The input end of methylene chloride alkali cleaning pump, which is equipped with, to be used for and methylene chloride
The outlet end of the methylene chloride feed pipe of cooler connection, methylene chloride alkali cleaning pump passes through first material pipeline and methylene chloride
The input end of azeotropic separation device is connected to, and described first adds the upstream end of alkali pipeline to be equipped with the first valve, and first adds under alkali pipeline
You Duanyu methylene chloride feed pipe is in parallel, and the methylene chloride after purification enters methylene chloride alkali cleaning by dichloro feed pipe
Pump, lye are entered in methylene chloride alkali cleaning pump under self gravity by first plus alkali pipeline, are deacidified to the methylene chloride of purification,
Methylene chloride and lye after deacidification are entered in methylene chloride azeotropic separation device by first material pipeline, realization methylene chloride,
Lye separation, complete methylene chloride add alkali remove free acid technique, due to head tank height be higher than methylene chloride alkali cleaning pump to
Few 30m, enables lye effectively to overcome the back pressure at first plus alkali pipe downstream end, stablizes, continues to flow into methylene chloride alkali cleaning pump
It is interior, guarantee deacidification effect.First adds alkali pipeline to be equipped with first flowmeter, and the downstream of first flowmeter is equipped with first and adjusts
Valve can adjust the lye amount that valve regulation flows into methylene chloride alkali cleaning pump by first according to production needs.The chloroform alkali
The input end of pump is washed equipped with the chloroform feed pipe for connecting with chloroform cooler, chloroform alkali cleaning pump goes out
Mouth end is connected to by second material pipeline with the input end of chloroform azeotropic separation device, and described second adds the upstream end of alkali pipeline
Equipped with the second valve, second adds the downstream of alkali pipeline in parallel with chloroform feed pipe, and the chloroform after purification passes through
Chloroform feed pipe enters chloroform alkali cleaning pump, and lye enters three chloromethanes by second plus alkali pipeline under self gravity
In alkane alkali cleaning pump, deacidify to the chloroform of purification, the chloroform and lye after deacidification enter three by second material pipeline
In chloromethanes azeotropic separation device, chloroform, lye separation are realized, complete the technique that chloroform adds alkali to remove free acid, due to
The height of head tank is higher than chloroform alkali cleaning and pumps at least 30m, and lye is enable effectively to overcome second to add alkali pipe downstream end
Back pressure is stablized, is continued to flow into chloroform alkali cleaning pump, guarantees deacidification effect.Second adds alkali pipeline to be equipped with second flowmeter,
The downstream of second flowmeter is equipped with the second regulating valve, can adjust valve regulation according to production needs by second and flow into three chloromethanes
The lye amount of alkane alkali cleaning pump.The utility model adds alkali deacidification device using liquid level difference respectively to methylene chloride alkali cleaning pump, three chloromethanes
Alkane alkali cleaning pump conveying lye, stablizes and guarantees deacidification effect for alkali, moreover it is possible to effectively prevent conventionally employed metering pump conveying lye and exist
Methylene chloride, chloroform flushing defect, in addition, deactivate metering pump, also reduce enterprise operation cost.
2, the upstream end of first flowmeter is equipped with the first maintenance valve, and the upstream end of second flowmeter is equipped with the second service valve
Door closes the first maintenance valve, the second maintenance valve, can carry out upkeep operation, drop to first flowmeter, second flowmeter respectively
Low-dimensional repair first flowmeter, in the pipeline of second flow timing upstream end lye leakage rate.
It is further described with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of the utility model.
In attached drawing, 1 is head tank, and 1a is alkali inlet tube road, and 1b is alkali outlet pipe road, and 2 pump for methylene chloride alkali cleaning, and 3 be trichlorine
Methane alkali cleaning pump, 4 be methylene chloride azeotropic separation device, and 5 be chloroform azeotropic separation device, and 6 be first plus alkali pipeline, and 7 be the
Two plus alkali pipeline, 8 be methylene chloride feed pipe, and 9 be first material pipeline, and 10 be first flowmeter, 11 for chloroform into
Pipe material, 12 be second material pipeline, and 13 be second flowmeter, and 21 be the first valve, and 22 be the first regulating valve, and 23 be the second valve
Door, 24 be the second regulating valve, and 25 be the first maintenance valve, and 26 be the second maintenance valve, and 27 be third valve.
Specific embodiment
It is the specific embodiment for adding alkali deacidification device of a kind of methylene chloride and chloroform referring to Fig. 1.Methylene chloride and
Chloroform plus alkali deacidification device include head tank 1, methylene chloride alkali cleaning pump 2, chloroform alkali cleaning pump 3, methylene chloride it is total
Boil separator 4 and chloroform azeotropic separation device 5, in the present embodiment, head tank is made of carbon steel, is arranged on frame workshop top
Building, the height apart from ground are 30m, methylene chloride alkali cleaning pump, chloroform alkali cleaning pump, methylene chloride azeotropic separation device, trichlorine
Methane azeotropic separation device is all made of conventional equipment.The methylene chloride alkali cleaning pump 2, chloroform alkali cleaning pump 3 are fixedly installed
On the ground, it is located at sustained height.The side wall of the head tank 1 is equipped with alkali inlet tube road 1a, specifically, the alkali inlet tube road is upper
Trip end level extends to the left, and the downstream of alkali inlet tube road 1a extends downwards, is connected to the upper portion side wall of head tank 1.It is high-order
The bottom of slot 1 is equipped with extend downwardly first plus alkali pipeline 6, second plus alkali pipeline 7, in the present embodiment, the lower side of head tank
Wall is equipped with the alkali outlet pipe road 1b extended horizontally to the right, and alkali outlet pipe road 1b is equipped with third valve 27, and first adds alkali pipeline, second
Add the upstream end of alkali pipeline in parallel with alkali outlet pipe road.The input end of methylene chloride alkali cleaning pump 2, which is equipped with, to be used for and methylene chloride
The outlet end of the methylene chloride feed pipe 8 of cooler connection, methylene chloride alkali cleaning pump 2 passes through first material pipeline 9 and dichloro
The input end of methane azeotropic separation device 4 is connected to, and methylene chloride feed pipe level extends to the left, and the methylene chloride after purification passes through
Methylene chloride feed pipe enters methylene chloride alkali cleaning pump.Described first adds the upstream end of alkali pipeline 6 to be equipped with the first valve 21, the
One adds alkali pipeline 6 to extend straight down, and after 90 ° of bending to the right, downstream is in parallel with methylene chloride feed pipe 8, and first adds alkali
Pipeline 6 is equipped with first flowmeter 10, and the downstream of first flowmeter 10 is equipped with the first regulating valve 22, and the first valve, first are adjusted
Section valve is all made of ball valve.The input end of the chloroform alkali cleaning pump 3 is equipped with the trichlorine for connecting with chloroform cooler
The outlet end of methane feed pipeline 11, chloroform alkali cleaning pump 3 passes through second material pipeline 12 and chloroform azeotropic separation device 5
Input end connection, chloroform feed pipe extends horizontally to the right, and the chloroform after purification passes through chloroform feed pipe
Road enters chloroform alkali cleaning pump.Described second adds the upstream end of alkali pipeline 7 to be equipped with the second valve 23, and second adds alkali pipeline vertical
It extends downwardly, after 90 ° of bending to the left, downstream is in parallel with chloroform feed pipe 11, and second adds alkali pipeline 7 to be equipped with second
The downstream of flowmeter 13, second flowmeter 13 is equipped with the second regulating valve 24, and the second valve, the second regulating valve are all made of ball valve.
Further, in order to facilitate maintenance first flowmeter, second flowmeter, maintenance first flowmeter, second are reduced
The leakage rate of lye when meter is equipped with the first maintenance valve 25 in the upstream end of first flowmeter 10, in second flowmeter 13
Upstream end is equipped with the second maintenance valve 26, and the first maintenance valve, the second maintenance valve are all made of ball valve.
The application method of the utility model is, referring to Fig. 1, the first maintenance valve, the second maintenance valve are normally open, needs
Overhaul first flowmeter, second flow timing is closed.Lye is stored in head tank by alkali inlet tube road.Start methylene chloride
Alkali cleaning pump, chloroform alkali cleaning pump, open third valve, the first valve, the second valve, and adjust the first regulating valve, the second tune
The opening degree of valve is saved to methylene chloride, chloroform flow (being 7%~8% into alkali number) is matched, methylene chloride, lye enter two
Mixing in chloromethanes alkali cleaning pump after deacidification, conventional material and lye separation is carried out into methylene chloride azeotropic separation device, is obtained
Methylene chloride product.Chloroform, lye enter mixing in chloroform alkali cleaning pump, after deacidification, into chloroform azeotropic point
Conventional material and lye separation are carried out from device, obtain chloroform product.
Claims (7)
1. a kind of methylene chloride and chloroform plus alkali deacidification device, it is characterised in that: including head tank (1), methylene chloride
Alkali cleaning pumps (2), chloroform alkali cleaning pump (3), methylene chloride azeotropic separation device (4) and chloroform azeotropic separation device (5),
The methylene chloride alkali cleaning pump (2), chloroform alkali cleaning pump (3) are located in same level, and head tank (1) is located at dichloro
Methane alkali cleaning pumps (2), chloroform alkali cleaning pump (3) the top at least position 30m,
The side wall of the head tank (1) is equipped with alkali inlet tube road (1a), and the bottom of head tank (1) is equipped with first extended downwardly and adds
Alkali pipeline (6), second add alkali pipeline (7),
The input end of the methylene chloride alkali cleaning pump (2) is equipped with the methylene chloride feed pipe for connecting with methylene chloride cooler
Road (8), methylene chloride alkali cleaning pump the outlet end of (2) by first material pipeline (9) and methylene chloride azeotropic separation device (4) into
The connection of mouth end, described first adds the upstream end of alkali pipeline (6) to be equipped with the first valve (21), and first adds the downstream of alkali pipeline (6)
In parallel with methylene chloride feed pipe (8), first adds alkali pipeline (6) to be equipped with first flowmeter (10), first flowmeter (10)
Downstream be equipped with the first regulating valve (22),
The input end of the chloroform alkali cleaning pump (3) is equipped with the chloroform feed pipe for connecting with chloroform cooler
Road (11), the outlet end that chloroform alkali cleaning pumps (3) pass through second material pipeline (12) and chloroform azeotropic separation device (5)
Input end connection, described second adds the upstream end of alkali pipeline (7) to be equipped with the second valve (23), and second adds the downstream of alkali pipeline (7)
End is in parallel with chloroform feed pipe (11), and second adds alkali pipeline (7) to be equipped with second flowmeter (13), second flowmeter
(13) downstream is equipped with the second regulating valve (24).
2. methylene chloride according to claim 1 and chloroform plus alkali deacidification device, it is characterised in that: described first
The upstream end of flowmeter (10) is equipped with the first maintenance valve (25), and the first maintenance valve (25) uses ball valve.
3. methylene chloride according to claim 1 and chloroform plus alkali deacidification device, it is characterised in that: described second
The upstream end of flowmeter (13) is equipped with the second maintenance valve (26), and the second maintenance valve (26) uses ball valve.
4. methylene chloride according to claim 1 and chloroform plus alkali deacidification device, it is characterised in that: described first
After adding the upstream end of alkali pipeline (6), second to add the upstream end of alkali pipeline (7) in parallel, pass through a horizontal-extending alkali outlet pipe road
(1b) is connected to head tank (1) bottom, and the alkali outlet pipe road (1b) is equipped with third valve (27).
5. methylene chloride according to claim 1 and chloroform plus alkali deacidification device, it is characterised in that: described first
Valve (21), the second valve (23), the first regulating valve (22), the second regulating valve (24) are all made of ball valve.
6. methylene chloride according to claim 1 and chloroform plus alkali deacidification device, it is characterised in that: it is described into alkali
The upstream end of pipeline (1a) is horizontally extending, and the downstream of alkali inlet tube road (1a) extends downwards, with head tank (1)
Upper portion side wall connection.
7. methylene chloride according to claim 1 and chloroform plus alkali deacidification device, it is characterised in that: the dichloro
Methane feed pipeline (8), chloroform feed pipe (11) are horizontally extending respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821287144.XU CN208694943U (en) | 2018-08-10 | 2018-08-10 | Methylene chloride and chloroform plus alkali deacidification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821287144.XU CN208694943U (en) | 2018-08-10 | 2018-08-10 | Methylene chloride and chloroform plus alkali deacidification device |
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| Publication Number | Publication Date |
|---|---|
| CN208694943U true CN208694943U (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821287144.XU Active CN208694943U (en) | 2018-08-10 | 2018-08-10 | Methylene chloride and chloroform plus alkali deacidification device |
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| CN (1) | CN208694943U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307148A (en) * | 2019-06-27 | 2019-10-08 | 唐钢美锦（唐山）煤化工有限公司 | A kind of coking desulfurization systems pumps cooling water emergency treatment device and technique |
-
2018
- 2018-08-10 CN CN201821287144.XU patent/CN208694943U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110307148A (en) * | 2019-06-27 | 2019-10-08 | 唐钢美锦（唐山）煤化工有限公司 | A kind of coking desulfurization systems pumps cooling water emergency treatment device and technique |
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