CN211514001U - Improved chemical engineering tail gas absorption tower - Google Patents
Improved chemical engineering tail gas absorption tower Download PDFInfo
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- CN211514001U CN211514001U CN201922031882.9U CN201922031882U CN211514001U CN 211514001 U CN211514001 U CN 211514001U CN 201922031882 U CN201922031882 U CN 201922031882U CN 211514001 U CN211514001 U CN 211514001U
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- absorption tower
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- tail gas
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Abstract
The utility model provides an improved chemical engineering tail gas absorption tower, which mainly comprises a first-stage absorption tower (1), a second-stage absorption tower (2) and a third-stage absorption tower (3), wherein each stage of absorption tower consists of a liquid storage tank (11, 21, 31), absorption fillers (12, 22, 32), a spray header (13, 23, 33), a PH value detector (14, 24, 34) and a drain connection pump (15, 25, 35); one end of the drain connecting pump (15, 25, 35) is connected to a drain at the lower end of the absorption tower liquid storage tank (11, 21, 31), and the other end is connected with a pipeline (8) through a valve (7) and is connected with a corresponding liquid storage tank access port (9). The utility model discloses a modified chemical industry tail gas absorption tower has realized waste water utilization, has practiced thrift the water to through automatic monitoring pH value and automatic start pump, avoided the tail gas to absorb the environmental pollution who does not thoroughly cause.
Description
Technical Field
The utility model belongs to the chemical industry field specifically is a modified chemical industry tail gas absorption tower.
Background
In the field of chemical production, a large amount of generated tail gas needs to be absorbed by an absorption tower. For example, when the o-chlorophenylglycine is produced, tap water, methanol, ammonia water and the like are used as raw materials in the production process, the methanol and the ammonia water are distilled and recovered in the production process, and tail gas such as methanol gas, ammonia gas and the like generated in the recovery process is absorbed by an absorption tower. At present, enterprises generally adopt tap water to carry out three-stage absorption treatment, and in the actual tail gas treatment process, absorption liquid (especially the absorption liquid of the first stage) needs to be frequently changed, and the method for changing the absorption liquid is to measure the pH value of the absorption liquid manually, and the absorption liquid is discharged into a wastewater treatment station through a drain valve at the bottom of a water storage tank after reaching a certain pH value. If the control is not good, the absorption liquid fails, and waste gas can be emitted to cause pollution.
Disclosure of Invention
For solving the not enough of above-mentioned prior art existence, the utility model provides a technical problem who solves provides a modified chemical industry tail gas absorption tower, adopts the method of automatic monitoring absorption liquid pH value to squeeze into the receiving tank with the pump for the absorption liquid, in order to be used for next production of batch.
In order to achieve the technical purpose, the improved chemical engineering tail gas absorption tower mainly comprises a first-level absorption tower, a second-level absorption tower and a third-level absorption tower, wherein each level of absorption tower is composed of a liquid storage tank, absorption fillers and a spray header. The tail gas air inlet has been seted up to one-level absorption tower liquid storage pot upper end, and one-level absorption tower upper end and second grade absorption tower liquid storage pot upper end, second grade absorption tower upper end pass through air pipe with tertiary absorption tower liquid storage pot upper end and are connected to add in the middle of the air pipe of second grade absorption tower upper end and tertiary absorption tower liquid storage pot upper end and be equipped with the draught fan, the air exit has been seted up to tertiary absorption tower upper end. The lower end of each absorption tower liquid storage tank is provided with a sewage outlet. In order to automatically monitor the PH value of each liquid storage tank, an automatic PH value detector is arranged in each liquid storage tank.
Furthermore, a drain port connecting pump is additionally arranged at the drain port at the lower end of the liquid storage tank of each absorption tower, one end of the drain port connecting pump is connected to the drain port at the lower end of the liquid storage tank of the absorption tower, and the other end of the drain port connecting pump is connected with a pipeline through a valve. Wherein, the drain connection pump of tertiary absorption tower is connected to second grade absorption tower liquid storage pot through two way pipe connections respectively through two parallelly connected valves and inserts the mouth with the one-level absorption tower liquid storage pot, and the drain connection pump of second grade absorption tower is connected to one-level absorption tower liquid storage pot through pipe connection after a valve and is inserted the mouth, and the drain connection pump of one-level absorption tower is connected to the receiving tank through pipe connection after a valve.
Furthermore, the position of the sewage outlet connecting pump connected to the inlets of the secondary absorption tower liquid storage tank and the primary absorption tower liquid storage tank is higher than the absorption liquid by more than 20 cm.
In the technical scheme, the improved chemical tail gas absorption tower realizes waste water utilization, reduces the discharge of waste water, saves water, and avoids the environmental pollution caused by incomplete tail gas absorption through automatically monitoring the PH value and automatically starting the pump.
Drawings
Fig. 1 is a connection diagram of the improved chemical tail gas absorption tower of the utility model.
FIG. 1: 1. the primary absorption tower, 11, the primary absorption tower liquid storage tank, 12, the primary absorption tower absorbs the filler, 13, the primary absorption tower shower head, 14, the primary absorption tower PH value detector, 15, the primary absorption tower drain connects the pump, 2, the secondary absorption tower, 21, the secondary absorption tower liquid storage tank, 22, the secondary absorption tower absorbs the filler, 23, the secondary absorption tower shower head, 24, the secondary absorption tower PH value detector, 25, the secondary absorption tower drain connects the pump, 3, the tertiary absorption tower, 31, the tertiary absorption tower liquid storage tank, 32, the tertiary absorption tower absorbs the filler, 33, the tertiary absorption tower shower head, 34, the tertiary absorption tower PH value detector, 35, the tertiary absorption tower drain connects the pump, 4, tail gas air inlet, 5, the draught fan, 6, the air exit, 7, the valve, 8, the pipeline, 9, the liquid storage tank access opening.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1, and it is obvious that the described embodiment is only a specific embodiment of the present invention, and not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
The utility model relates to a modified chemical industry tail gas absorption tower, including one-level absorption tower 1, second grade absorption tower 2, tertiary absorption tower 3, each absorption tower includes liquid storage pot (11, 21, 31), absorption filler (12, 22, 32), shower head (13, 23, 33), PH value detector (14, 24, 34), drain connecting pump (15, 25, 35) respectively.
The device inserts tail gas by 4 positions of one-level absorption tower tail gas air inlets, under the effect of draught fan 5, draws the tail gas to third level absorption tower, and the tail gas of introducing is up to standard after tertiary absorption and is discharged through 6 high altitude in air outlets. The top of each stage of absorption tower is provided with a spray header (13, 23, 33), the absorption liquid of the liquid storage tank (11, 21, 31) is sprayed from the spray header (13, 23, 33) by a pump, and the sprayed absorption liquid is recycled to the liquid storage tank (11, 21, 31) through absorption packing (12, 22, 32). When the absorption tower runs for a period of time, the absorption liquid in the liquid storage tanks (11, 21, 31) needs to be replaced, and particularly the first-stage absorption tower is replaced more frequently. The device is at one, two, online PH value detector (14, 24, 34) of installation on the tertiary absorption tower, install drain connecting pump (15, 25, 35) additional on former drain position, after the absorption liquid of one-level absorption tower 1, second grade absorption tower 2 reached the predetermined index of PH value detector, corresponding valve 7 was opened to interlock, carry the absorption liquid to workshop receiving tank through newly-increased pipeline 8, squeeze into one-level absorption tower 1 with the absorption liquid of tertiary absorption tower 3 simultaneously, and supplement the absorption liquid of absorption tower at different levels to predetermined scale automatically. One end of the newly added pipeline 8 is connected with the pump (25, 35) through the original sewage draining port, the other end is connected with the liquid storage tank access port 9 of the absorption tower, and the position of the liquid storage tank access port 9 needs to be higher than the absorption liquid by more than 20 cm.
Claims (3)
1. An improved chemical tail gas absorption tower mainly comprises a first-stage absorption tower (1), a second-stage absorption tower (2) and a third-stage absorption tower (3), wherein each stage of absorption tower consists of liquid storage tanks (11, 21, 31), absorption fillers (12, 22, 32), spray headers (13, 23, 33), a tail gas inlet (4) is formed in the upper end of the first-stage absorption tower liquid storage tank (11), the upper end of the first-stage absorption tower (1) is connected with the upper end of the second-stage absorption tower liquid storage tank (21), the upper end of the second-stage absorption tower (2) is connected with the upper end of the third-stage absorption tower liquid storage tank (31) through a ventilation pipeline, a draught fan (5) is additionally arranged between the upper end of the second-stage absorption tower (2) and the upper end of the third-stage absorption tower liquid storage tank (31), an air outlet (6) is formed in the, the method is characterized in that: automatic PH value detectors (14, 24, 34) are arranged in the absorption tower liquid storage tanks (11, 21, 31).
2. The improved chemical tail gas absorption tower of claim 1, wherein: a sewage outlet connecting pump (15, 25, 35) is additionally arranged at a sewage outlet at the lower end of each absorption tower liquid storage tank (11, 21, 31), one end of the sewage outlet connecting pump (15, 25, 35) is connected to a sewage outlet at the lower end of each absorption tower liquid storage tank (11, 21, 31), and the other end is connected with a pipeline (8) through a valve (7); wherein, drain connecting pump (35) of tertiary absorption tower (3) is connected to second grade absorption tower liquid storage pot access port (9) and one-level absorption tower liquid storage pot access port (9) through two parallelly connected valves (7) respectively through two way pipeline (8), drain connecting pump (25) of second grade absorption tower is connected to one-level absorption tower liquid storage pot access port (9) through pipeline (8) after valve (7), drain connecting pump (15) of one-level absorption tower is connected to the receiving tank through pipeline (8) after valve (7).
3. The improved chemical off-gas absorber of claim 2, wherein: the position of the inlet (9) of the sewage draining outlet connecting pumps (25, 35) connected to the secondary absorption tower liquid storage tank (21) and the primary absorption tower liquid storage tank (11) is higher than the absorption liquid by more than 20 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922031882.9U CN211514001U (en) | 2019-11-22 | 2019-11-22 | Improved chemical engineering tail gas absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922031882.9U CN211514001U (en) | 2019-11-22 | 2019-11-22 | Improved chemical engineering tail gas absorption tower |
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| CN211514001U true CN211514001U (en) | 2020-09-18 |
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| CN201922031882.9U Active CN211514001U (en) | 2019-11-22 | 2019-11-22 | Improved chemical engineering tail gas absorption tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116603367A (en) * | 2023-05-30 | 2023-08-18 | 华澄(江门)环保装备科技有限公司 | Toughened glass silk screen waste gas recycling and purifying system and method |
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2019
- 2019-11-22 CN CN201922031882.9U patent/CN211514001U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116603367A (en) * | 2023-05-30 | 2023-08-18 | 华澄(江门)环保装备科技有限公司 | Toughened glass silk screen waste gas recycling and purifying system and method |
| CN116603367B (en) * | 2023-05-30 | 2024-04-02 | 广东华澄环保装备科技有限公司 | Toughened glass silk screen waste gas recycling and purifying system and method |
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