CN217312663U

CN217312663U - Tail gas absorbing device of N-methylpyrrolidine

Info

Publication number: CN217312663U
Application number: CN202220309964.4U
Authority: CN
Inventors: 刘爱国
Original assignee: Shandong Guoyao Chemical Technology Co ltd
Current assignee: Shandong Guoyao Chemical Technology Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-08-30
Anticipated expiration: 2032-02-16

Abstract

The utility model is suitable for a chemical production technical field provides a tail gas absorbing device of N-methylpyrrolidine, including the clean mechanism of first clean mechanism, air exhauster and second, first clean mechanism is including clean frame, and the left end intercommunication of clean frame has first intake pipe, the first connecting ring of left end fixedly connected with of first intake pipe, and the top fixedly connected with of clean frame link up to its inside water diversion pipe. This tail gas absorbing device of N-methylpyrrolidine through setting up first clean mechanism and the clean mechanism of second, and first clean mechanism adsorbs the seizure through spraying clean water to the tail gas of N-methylpyrrolidine, as the device's first layer filtration mode, and the gas that first clean mechanism does not adsorb the seizure completely can get into the clean mechanism of second under the suction effect of air exhauster, and the clean mechanism of second carries out the secondary adsorption filtration to remaining gas, has guaranteed that the gas of N-methylpyrrolidine can not discharge to the atmosphere in, has played the effect of environmental protection.

Description

Tail gas absorbing device of N-methylpyrrolidine

Technical Field

The utility model belongs to the technical field of chemical production, especially, relate to a tail gas absorbing device of N-methylpyrrolidine.

Background

N-methyl pyrrolidine is also called 1-methyl pyrrolidine, is a chemical substance, is colorless transparent liquid, has volatility, flammability and corrosivity, is a substance which is harmful to the environment, and is generally used as a medical intermediate.

N-methyl pyrrolidine is generally used as a medical intermediate, has certain toxicity and volatility, can cause great pollution to the environment if gas volatilized and emitted is directly discharged into the atmosphere, is easy to dissolve in water, can cause harm to aquatic organisms in the water when being dissolved in the water, and can generate long-term adverse effects on the environment of a water body, so that the gas volatilized by the N-methyl pyrrolidine needs to be absorbed and treated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tail gas absorbing device of N-methylpyrrolidine aims at solving N-methylpyrrolidine and has certain toxicity to having volatility, its gas that volatilizees out if direct emission in the atmosphere can cause very big pollution to the environment, and it is easily soluble in aquatic simultaneously, right side in it dissolves in water, can bring harm to the aquatic organism of aquatic, and produce long-term harmful effects's problem to the environment of water.

The utility model is realized in such a way that the tail gas absorption device of N-methylpyrrolidine comprises a first cleaning mechanism, an exhaust fan and a second cleaning mechanism;

the first cleaning mechanism comprises a cleaning frame, the left end of the cleaning frame is communicated with a first air inlet pipe, the left end of the first air inlet pipe is fixedly connected with a first connecting ring, the top end of the cleaning frame is fixedly connected with a water distribution pipe which penetrates through the cleaning frame, the surface of the water distribution pipe, which is positioned inside the cleaning frame, is communicated with a plurality of spray heads, the lower end of the cleaning frame is fixedly connected with a liquid collection frame matched with the cleaning frame in length, the upper surface of the liquid collection frame is provided with a plurality of lower water tanks which penetrate through the cleaning frame along the length direction of the upper surface of the liquid collection frame, the upper surface of the liquid collection frame and the left and right ends of the plurality of lower water tanks are fixedly connected with anti-splash plates, the right end of the cleaning frame is communicated with a second air inlet pipe, the exhaust fan is communicated with the right end of the second air inlet pipe, and the second cleaning mechanism is arranged at the right end of the exhaust fan;

the second cleaning mechanism comprises a second connecting ring fixedly connected to the right end of the exhaust fan, a mounting ring is fixedly connected to the right end of the second connecting ring, external threads are arranged on the outer annular surface of the mounting ring, a cleaning cylinder is detachably arranged on the outer surface of the mounting ring, internal threads matched with the external threads are arranged at the left end of the inner annular surface of the cleaning cylinder, the cleaning cylinder is detachably mounted on the outer surface of the mounting ring through the internal threads, a water-containing sponge block is fixedly connected to the inside of the cleaning cylinder, and a plurality of ventilation holes penetrating through the cleaning cylinder are formed in the right end of the cleaning cylinder.

Preferably, the lower surface of the interior of the liquid collecting frame is obliquely arranged, and the side wall of the inner surface of the liquid collecting frame is provided with a liquid outlet hole penetrating through the outer surface of the liquid collecting frame.

Preferably, the outer end intercommunication in play liquid hole has circulating pipe, the top intercommunication of dividing the water pipe has the inlet tube, the inlet tube with be provided with first water pump between the circulating pipe, the water inlet and the delivery port of first water pump respectively with circulating pipe's outer end with the outer end intercommunication of inlet tube, the last first valve that is provided with of circulating pipe.

Preferably, the surface of the circulating water pipe between the first valve and the first water pump is communicated with a water inlet pipe, the water inlet pipe is provided with a second valve, and the outer end of the water inlet pipe is communicated with a water tank.

Preferably, circulating pipe is located first valve with the surface intercommunication between the liquid outlet hole has a water outlet pipe, be provided with the third valve on the water outlet pipe, one side of water outlet pipe is provided with the second water pump, the water inlet of second water pump with the outer end intercommunication of water outlet pipe, the delivery port intercommunication of second water pump has the drain pipe.

Preferably, the top end of the water tank is provided with a water inlet hole.

Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a tail gas absorbing device of N-methylpyrrolidine, this tail gas absorbing device of N-methylpyrrolidine, through setting up first clean mechanism and second clean mechanism, first clean mechanism sprays the clear water through a plurality of shower heads, because the gas of N-methylpyrrolidine is easily dissolved in the water, the clear water can catch the gas that N-methylpyrrolidine volatilizees, right solution of it can flow into the collection liquid frame through the basin down to realize the purification and filtration of N-methylpyrrolidine, simultaneously second clean mechanism can carry out the secondary catch with the N-methylpyrrolidine gas that first clean mechanism does not catch totally, when N-methylpyrrolidine moves to inside the second clean mechanism, can be caught by the sponge piece that contains wherein, and can change at any time at the second clean mechanism, guarantee its clean effect of filtration, the device carries out dual clean filtration to the volatile gas of N-methylpyrrolidine through two mechanisms, guarantees that it can not reveal in the atmosphere, has played the effect of environmental protection.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a top view of the liquid collecting frame of the present invention;

fig. 4 is a schematic structural view of the second cleaning mechanism of the present invention.

In the figure: 1-cleaning frame, 2-first air inlet pipe, 3-first connecting ring, 4-liquid collecting frame, 5-water discharging tank, 6-splash plate, 7-liquid outlet hole, 8-water distributing water pipe, 9-spray head, 10-second air inlet pipe, 11-exhaust fan, 12-second connecting ring, 13-mounting ring, 14-external thread, 15-cleaning cylinder, 16-internal thread, 17-vent hole, 18-water-containing sponge block, 19-circulating water pipe, 20-first valve, 21-first water pump, 22-water inlet pipe, 23-second valve, 24-water tank, 25-water inlet hole, 26-water outlet pipe, 27-third valve and 28-second water pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-4, the present invention provides a technical solution: a tail gas absorption device of N-methylpyrrolidine comprises a first cleaning mechanism, an exhaust fan 11 and a second cleaning mechanism.

First clean mechanism is including clean frame 1, the left end intercommunication of clean frame 1 has first intake pipe 2, the left end fixedly connected with first connecting ring 3 of first intake pipe 2, the top fixedly connected with of clean frame 1 link up to its inside water diversion pipe 8, water diversion pipe 8 is located the inside surface intercommunication of clean frame 1 and has a plurality of shower heads 9, the lower extreme fixedly connected with of clean frame 1 and the collection liquid frame 4 of its length adaptation, a plurality of inside lower basins 5 that link up are seted up along its length direction to the upper surface of collection liquid frame 4, the equal fixedly connected with splash guard 6 in both ends about the upper surface of collection liquid frame 4 and be located a plurality of lower basins 5, the right-hand member intercommunication of clean frame 1 has second intake pipe 10, air exhauster 11 communicates in the right-hand member of second intake pipe 10, the clean mechanism of second sets up in the right-hand member of air exhauster 11.

In this embodiment, when the apparatus is used, the first connection ring 3 is first connected to the inside of the tank containing N-methylpyrrolidine, the right side of the tank starts the exhaust fan 11, the exhaust fan 11 sucks the gas volatilized from N-methylpyrrolidine into the inside of the first cleaning mechanism, the shower head 9 in the first cleaning mechanism continuously sprays, the N-methylpyrrolidine gas located inside the cleaning frame 1 is captured and dissolved in itself, and the right side of the solution flows into the inside of the liquid collecting frame 4 through the water discharge tank 5, and the first cleaning mechanism purifies the N-methylpyrrolidine gas by continuous spraying of the shower heads 9.

Further, the second cleaning mechanism comprises a second connecting ring 12 fixedly connected to the right end of the exhaust fan 11, a mounting ring 13 is fixedly connected to the right end of the second connecting ring 12, an external thread 14 is arranged on the outer annular surface of the mounting ring 13, a cleaning barrel 15 is detachably arranged on the outer surface of the mounting ring 13, an internal thread 16 matched with the external thread 14 is arranged at the left end of the inner annular surface of the cleaning barrel 15, the cleaning barrel 15 is detachably arranged on the outer surface of the mounting ring 13 through the internal thread 16, a water-containing sponge block 18 is fixedly connected to the inside of the cleaning barrel 15, and a plurality of ventilation holes 17 penetrating through the cleaning barrel 15 are formed in the right end of the cleaning barrel 15.

In this embodiment, the N-methylpyrrolidine gas that is not completely captured by the first cleaning mechanism enters the second cleaning mechanism through the exhaust fan 11, and when the N-methylpyrrolidine gas enters the right side inside the second cleaning mechanism, the N-methylpyrrolidine gas continuously moves to the right end of the second cleaning mechanism, and is captured by the moisture in the water-containing sponge block 18 on the rightmost side, and meanwhile, the second cleaning mechanism is installed on the outer surface of the installation ring 13 through the internal thread 16, so that the second cleaning mechanism is convenient to disassemble and install, and when the service life of the second cleaning mechanism reaches the limit, the second cleaning mechanism can be disassembled and replaced by a new second cleaning mechanism to continue working.

Furthermore, the lower surface of the inner part of the liquid collecting frame 4 is obliquely arranged, and the side wall of the inner surface of the liquid collecting frame 4 is provided with a liquid outlet hole 7 penetrating to the outer surface of the inner surface.

The outer end intercommunication of liquid outlet 7 has circulating pipe 19, and the top intercommunication of dividing water pipe 8 has the inlet tube, is provided with first water pump 21 between inlet tube and the circulating pipe 19, and the water inlet and the delivery port of first water pump 21 communicate with the outer end of circulating pipe 19 and the outer end of inlet tube respectively, are provided with first valve 20 on the circulating pipe 19.

In the present embodiment, since the amount of precipitation sprayed is large and more N-methylpyrrolidine gas is dissolved therein, the first water pump 21 can be started and the batch of clean water can be reused through the circulating water pipe 19.

Furthermore, a water inlet pipe 22 is communicated with the surface of the circulating water pipe 19 between the first valve 20 and the first water pump 21, a second valve 23 is arranged on the water inlet pipe 22, and the outer end of the water inlet pipe 22 is communicated with a water tank 24.

In the present embodiment, when the circulating water is not activated, the first valve 20 is closed and the second valve 23 is opened, the first water pump 21 is started again, the first water pump 21 pumps the cleaning water into the water diversion pipe 8 from the inside of the water tank 24 and sprays the cleaning water through the plurality of spray headers 9, and when the pumped cleaning water reaches a certain amount, the second valve 23 can be closed and the first valve 20 can be opened to recycle the cleaning water by using the circulating water pipe 19.

Further, the top end of the water tank 24 is provided with a water inlet 25.

In the present embodiment, the cleaning water may be poured into the water tank 24 through the water inlet hole 25.

Furthermore, a water outlet pipe 26 is communicated with the surface of the circulating water pipe 19 between the first valve 20 and the liquid outlet hole 7, a third valve is arranged on the water outlet pipe 26, a second water pump 28 is arranged on one side of the water outlet pipe 26, the water inlet of the second water pump 28 is communicated with the outer end of the water outlet pipe 26, and the water outlet of the second water pump 28 is communicated with a water outlet pipe.

In this embodiment, when the circulating cleaning water is used for a period of time, it is necessary to discharge it and replace it with new cleaning water, and when discharging, the first valve 20 and the first water pump 21 are closed and the third valve 27 and the second water pump 28 are opened, and the waste water is discharged through the water outlet pipe 26 and collected for treatment.

The utility model discloses a theory of operation and use flow: the utility model discloses the installation is right, at first close first valve 20 and open second valve 23 and first water pump 21, reopen air exhauster 11, air exhauster 11 is with the inside of the first clean mechanism of gas suction of N-methylpyrrolidine, a plurality of shower heads 9 of first clean mechanism inside spray clean water and catch the gas of N-methylpyrrolidine and make it dissolve in clean water, purify filtration to gas, it can flow into the inside of album liquid frame 4 through basin 5 down to right side these clean water, two splash shields 6 at basin 5 both ends also prevent that clean water from spattering to air exhauster 11 or first intake pipe 2 down simultaneously, the gas that is not caught simultaneously can be by secondary filter and clean in getting into the clean mechanism of second under the suction of air exhauster 11, guarantee that the gas of N-methylpyrrolidine can directly not be discharged into the atmosphere.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The N-methylpyrrolidine tail gas absorption device is characterized in that: comprises a first cleaning mechanism, an exhaust fan (11) and a second cleaning mechanism;

the first cleaning mechanism comprises a cleaning frame (1), a first air inlet pipe (2) is communicated with the left end of the cleaning frame (1), a first connecting ring (3) is fixedly connected with the left end of the first air inlet pipe (2), a water distributing pipe (8) penetrating into the cleaning frame (1) is fixedly connected with the top end of the cleaning frame (1), a plurality of spray heads (9) are communicated with the surface of the water distributing pipe (8) positioned in the cleaning frame (1), a liquid collecting frame (4) matched with the cleaning frame in length is fixedly connected with the lower end of the cleaning frame (1), a plurality of lower water troughs (5) penetrating into the liquid collecting frame (4) are formed in the upper surface of the liquid collecting frame (4) along the length direction of the liquid collecting frame, splash plates (6) are fixedly connected with the left end and the right end of the plurality of the lower water troughs (5), and a second air inlet pipe (10) is communicated with the right end of the cleaning frame (1), the exhaust fan (11) is communicated with the right end of the second air inlet pipe (10), and the second cleaning mechanism is arranged at the right end of the exhaust fan (11);

the second cleaning mechanism comprises a second connecting ring (12) fixedly connected to the right end of the exhaust fan (11), a mounting ring (13) is fixedly connected to the right end of the second connecting ring (12), external threads (14) are arranged on the outer annular surface of the mounting ring (13), a cleaning barrel (15) is detachably arranged on the outer surface of the mounting ring (13), internal threads (16) matched with the external threads (14) are arranged at the left end of the inner annular surface of the cleaning barrel (15), the cleaning barrel (15) is detachably arranged on the outer surface of the mounting ring (13) through the internal threads (16), a water-containing sponge block (18) is fixedly connected to the inside of the cleaning barrel (15), and a plurality of ventilation holes (17) penetrating through the cleaning barrel (15) are formed in the right end of the cleaning barrel.

2. The tail gas absorption device of N-methylpyrrolidine as claimed in claim 1, wherein: the lower surface of the inner part of the liquid collecting frame (4) is obliquely arranged, and the side wall of the inner surface of the liquid collecting frame (4) is provided with a liquid outlet hole (7) penetrating to the outer surface of the inner surface.

3. The tail gas absorption device for N-methylpyrrolidine as claimed in claim 2, wherein: the outer end intercommunication of play liquid hole (7) has circulating pipe (19), the top intercommunication of dividing water pipe (8) has the inlet tube, the inlet tube with be provided with first water pump (21) between circulating pipe (19), the water inlet and the delivery port of first water pump (21) respectively with the outer end of circulating pipe (19) with the outer end intercommunication of inlet tube, be provided with first valve (20) on circulating pipe (19).

4. The tail gas absorption device of N-methylpyrrolidine as claimed in claim 3, wherein: the surface of the circulating water pipe (19) between the first valve (20) and the first water pump (21) is communicated with a water inlet pipe (22), a second valve (23) is arranged on the water inlet pipe (22), and the outer end of the water inlet pipe (22) is communicated with a water tank (24).

5. The tail gas absorption device for N-methylpyrrolidine as claimed in claim 3, wherein: circulating pipe (19) are located first valve (20) with surface intercommunication between liquid outlet hole (7) has outlet pipe (26), be provided with the third valve on outlet pipe (26), one side of outlet pipe (26) is provided with second water pump (28), the water inlet of second water pump (28) with the outer end intercommunication of outlet pipe (26), the delivery port intercommunication of second water pump (28) has the drain pipe.

6. The tail gas absorption device of N-methylpyrrolidine as claimed in claim 4, wherein: the top end of the water tank (24) is provided with a water inlet hole (25).