CN214734620U - Wastewater treatment device capable of recovering methylamine - Google Patents
Wastewater treatment device capable of recovering methylamine Download PDFInfo
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- CN214734620U CN214734620U CN202120770808.3U CN202120770808U CN214734620U CN 214734620 U CN214734620 U CN 214734620U CN 202120770808 U CN202120770808 U CN 202120770808U CN 214734620 U CN214734620 U CN 214734620U
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Abstract
The utility model provides a wastewater treatment device capable of recovering methylamine, which comprises a wastewater pretreatment system and a methylamine absorption system, wherein the wastewater pretreatment system is connected with the methylamine absorption system through an exhaust pipeline; wastewater pretreatment systems include gaseous reation kettle, condenser, gas-liquid separation device that takes place, methylamine absorption system include methylamine absorption reation kettle, centrifugal pump, methyl alcohol storage tank, methylamine absorption reation kettle upper end be provided with the gaseous auxiliary device of venturi, methyl alcohol storage tank upper end be connected with methylamine absorption reation kettle, methyl alcohol storage tank, methylamine absorption reation kettle lower extreme are connected with the centrifugal pump. The method can solve the problem that methylamine-containing wastewater and high chlorine nitrogen are difficult to treat, prevent the methylamine wastewater from polluting the environment, improve the economic benefit of enterprises, and has important significance for recycling wastewater and industrialization.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, especially, relate to a wastewater treatment device of recoverable methylamine.
Technical Field
A large amount of methylamine-containing wastewater is often generated in the chemical production process. Methylamine wastewater belongs to an organic matter which is difficult to treat, COD and ammonia nitrogen in the wastewater are too high, and if the wastewater is directly discharged to a sewage treatment system, great difficulty is caused to sewage treatment. The raw materials are not recycled, which causes great waste. In the prior art, the methylamine wastewater is generally recovered by heating with steam and completing the recovery by steam, a packed tower, an acid absorption tower and the like, but the equipment has larger operation power consumption, low recovery rate and higher recovery cost.
Disclosure of Invention
The utility model provides a to above-mentioned problem, provide a waste water treatment device of recoverable methylamine.
In order to achieve the purpose, the utility model adopts the following technical scheme that the wastewater treatment device capable of recovering methylamine comprises a wastewater pretreatment system and a methylamine absorption system, wherein the wastewater pretreatment system and the methylamine absorption system are connected through an exhaust pipeline;
the wastewater pretreatment system comprises a gas generation reaction kettle, a condenser and a gas-liquid separation device, wherein the condenser comprises a primary condenser and a secondary condenser, and the gas generation reaction kettle is connected with the primary condenser through a primary pipeline and is connected with the gas-liquid separation device through a return pipeline; the gas-liquid separation device is connected with the secondary condenser through a gas outlet pipeline, and a liquid level line is arranged on the outer wall of the gas-liquid separation device;
the methylamine absorption system comprises a methylamine absorption reaction kettle, a centrifugal pump and a methanol storage tank, wherein the upper end of the methylamine absorption reaction kettle is provided with a Venturi gas auxiliary device, the upper end of the methanol storage tank is connected with the methylamine absorption reaction kettle, and the lower ends of the methanol storage tank and the methylamine absorption reaction kettle are connected with the centrifugal pump;
further, a solid feeder is arranged at the upper part of the gas generation reaction kettle;
furthermore, the secondary condenser is provided with a circulating pipeline and is connected with the gas-liquid separation device through the circulating pipeline;
furthermore, the return pipeline is U-shaped;
furthermore, a one-way check valve is arranged on the return pipeline;
furthermore, the one-way check valve and the liquid level line are positioned on the same horizontal line;
furthermore, a one-way stop valve and a pressure regulating valve are arranged on the exhaust pipeline;
furthermore, an exhaust pipeline between the one-way stop valve and the pressure regulating valve is connected with the Venturi gas auxiliary device through a pressure regulating pipeline;
furthermore, a stop valve is arranged on a connecting pipeline of the Venturi gas auxiliary device and the centrifugal pump.
The utility model discloses beneficial effect:
the utility model can effectively treat methylamine in wastewater, thereby improving the sewage treatment capacity of the biochemical tank;
the utility model can realize the circular absorption by adjusting the valve on the pipeline, improve the recovery rate of the methylamine and reduce the recovery cost;
the utility model discloses can be better, faster, the processing chemical sewage of more environmental protection, reduce waste water to environment and human harm.
Drawings
FIG. 1 is a schematic view of the connection of the present invention
1-a gas generation reaction kettle, 11-a solid feeder, 12-stop valves a, 13-one-way check valves, 14-stop valves b, 15-a-stage pipelines, 16-a backflow pipeline, 2-a condenser, 21-a-stage condenser, 22-a second-stage condenser, 23-an exhaust pipeline, 3-a gas-liquid separation device, 31-a liquid level line, 32-an exhaust pipeline, 33-a circulation pipeline, a 4-methylamine absorption reaction kettle, 41-stop valves c, 42-stop valves d, 5-a Venturi gas auxiliary device, 51-a one-way stop valves, 52-a pressure regulating valve, 53-stop valves e, 54-a pressure regulating pipeline, a 6-centrifugal pump, 61-stop valves f, 7-a methanol storage tank and 71-stop valves g.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
A wastewater treatment apparatus capable of recovering methylamine as shown in fig. 1 comprises a wastewater pretreatment system and a methylamine absorption system, wherein the wastewater pretreatment system and the methylamine absorption system are connected through an exhaust pipe 23.
The wastewater pretreatment system comprises a gas generation reaction kettle 1, a condenser 2 and a gas-liquid separation device 3, wherein the condenser 2 comprises a first-stage condenser 21 and a second-stage condenser 22, and multi-stage condensation separation can be realized. The gas generation reaction kettle 1 is connected with a first-stage condenser 21 through a first-stage pipeline 15, cooled steam and liquid are separated, and methylamine water solutions with different concentrations are obtained through adjusting a stop valve b 14. Is connected with the gas-liquid separation device 3 through a return pipeline 16; the backflow pipeline 16 is U-shaped, the backflow pipeline 16 is provided with a one-way drain valve 13, the outer wall of the gas-liquid separation device 3 is provided with a liquid level line 31, the one-way check valve 13 and the liquid level line 31 are located on the same horizontal line, and the liquid level height in the gas-liquid separation device 3 is controlled by adjusting the one-way check valve 13. The gas-liquid separation device 3 is connected with the secondary condenser 22 through an air outlet pipeline 32, and the secondary condenser 22 is provided with a circulating pipeline 33 and is connected with the gas-liquid separation device 3 through the circulating pipeline 33. The upper part of the gas generation reaction kettle 1 is provided with a solid feeder 11, and the bottom of the gas generation reaction kettle is also provided with a stop valve a 12.
The exhaust pipeline 23 connecting the wastewater pretreatment system and the methylamine absorption system is provided with a one-way stop valve 51 and a pressure regulating valve 52, and the exhaust pipeline 23 between the one-way stop valve 51 and the pressure regulating valve 52 is connected with the Venturi gas auxiliary device 5 through a pressure regulating pipeline 54. The venturi gas auxiliary device 5 can improve gas absorption, and through the one-way stop valve 51, causes the generating device micro negative pressure, improves absorption efficiency and yield. Venturi gas auxiliary device 5 and centrifugal pump 6 between be equipped with stop valve e 53, through venturi gas auxiliary device 5, air-vent valve K6 and the combination of single file stop valve K5, adjust the inside atmospheric pressure of pipeline, conveniently obtain gas admission methylamine absorption reation kettle 4.
Methylamine absorption system includes methylamine absorption reation kettle 4, centrifugal pump 6, methyl alcohol storage tank 7, methylamine absorption reation kettle 4 upper end be provided with venturi gas auxiliary device 5, 7 upper ends of methyl alcohol storage tank be connected with methylamine absorption reation kettle 4, be provided with stop valve d 42 between 7 upper ends of methyl alcohol storage tank and the methylamine absorption reation kettle 4, methylamine absorption reation kettle 4 bottom is provided with stop valve c 41, 7 bottoms of methyl alcohol storage tank are provided with stop valve g 71, methylamine absorption reation kettle 4, centrifugal pump 6 is connected to 7 lower extremes of methyl alcohol storage tank.
A one-way check valve 13 is arranged between the gas-liquid separation device 3 and the gas generation kettle 1, and a stop valve b14 is arranged on the water discharge pipe. Through the combination of the gas-liquid separation device 3, the one-way check valve 13 and the stop valve b14, the condensed liquid in the gas-liquid separation device 3 circularly enters the gas generation reaction kettle 1, and the stop valve a 12 on the adjusting drain pipe discharges the treated wastewater. And (4) recycling the escaped methylamine gas through a stop valve e 58, ensuring the recovery rate of methylamine, and opening a stop valve f 61 to discharge the product with qualified content and purity.
The utility model discloses carry out system treatment to the methylamine in the methylamine waste water, set up the methylamine water circulation absorption methylamine of gas-liquid separation device separation, reduced the recovery cost circulation absorption methylamine and also improved the methylamine rate of recovery, set up gaseous auxiliary device 5 of venturi simultaneously, further improve the methylamine rate of recovery to methylamine repeated absorption.
The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be regarded as limitations of the present invention, and the protection scope of the present invention should be protected by the technical solutions described in the claims, and equivalent alternatives including technical features in the technical solutions described in the claims are also within the protection scope of the present invention.
Claims (9)
1. A wastewater treatment device capable of recovering methylamine is characterized by comprising a wastewater pretreatment system and a methylamine absorption system, wherein the wastewater pretreatment system is connected with the methylamine absorption system through an exhaust pipeline;
the wastewater pretreatment system comprises a gas generation reaction kettle, a condenser and a gas-liquid separation device, wherein the condenser comprises a primary condenser and a secondary condenser, and the gas generation reaction kettle is connected with the primary condenser through a primary pipeline and is connected with the gas-liquid separation device through a return pipeline; the gas-liquid separation device is connected with the secondary condenser through a gas outlet pipeline, and a liquid level line is arranged on the outer wall of the gas-liquid separation device;
methylamine absorption system include methylamine absorption reation kettle, centrifugal pump, methyl alcohol storage tank, methylamine absorption reation kettle upper end be provided with the gaseous auxiliary device of venturi, methyl alcohol storage tank upper end be connected with methylamine absorption reation kettle, methyl alcohol storage tank, methylamine absorption reation kettle lower extreme connect the centrifugal pump.
2. The apparatus for treating wastewater containing recoverable methylamine as claimed in claim 1, wherein a solid feeder is disposed at the upper part of the gas generation reaction kettle.
3. The apparatus for treating wastewater containing recoverable methylamine as claimed in claim 1, wherein the secondary condenser is provided with a circulation pipeline, and is connected to the gas-liquid separation device through the circulation pipeline.
4. The methylamine recoverable waste water treatment device of claim 1, wherein the return pipeline is "U" shaped.
5. The apparatus of claim 1, wherein the return line is provided with a one-way check valve.
6. The apparatus of claim 5, wherein the check valve is located at the same level as the liquid level line.
7. The methylamine recoverable waste water treatment device as claimed in claim 1, wherein the exhaust pipeline is provided with a one-way stop valve and a pressure regulating valve.
8. The apparatus of claim 7, wherein the exhaust pipe between the one-way stop valve and the pressure regulating valve is connected to the venturi gas assist device through a pressure regulating pipe.
9. The methylamine recoverable waste water treatment device as claimed in claim 1, wherein a stop valve is arranged on the connecting pipeline of the venturi gas auxiliary device and the centrifugal pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120770808.3U CN214734620U (en) | 2021-04-15 | 2021-04-15 | Wastewater treatment device capable of recovering methylamine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120770808.3U CN214734620U (en) | 2021-04-15 | 2021-04-15 | Wastewater treatment device capable of recovering methylamine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214734620U true CN214734620U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120770808.3U Active CN214734620U (en) | 2021-04-15 | 2021-04-15 | Wastewater treatment device capable of recovering methylamine |
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|---|---|
| CN (1) | CN214734620U (en) |
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2021
- 2021-04-15 CN CN202120770808.3U patent/CN214734620U/en active Active
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