CN219333762U

CN219333762U - Tail gas absorbing and treating device for post-treatment of vinyl silicone oil

Info

Publication number: CN219333762U
Application number: CN202320912587.8U
Authority: CN
Inventors: 冯旭初; 茹键; 章伟刚; 陶坚
Original assignee: Zhejiang Hengyecheng New Material Co ltd
Current assignee: Zhejiang Hengyecheng New Material Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-07-14
Anticipated expiration: 2033-04-21

Abstract

The utility model discloses a tail gas absorbing and treating device for post-treatment of vinyl silicone oil, which comprises a spray frame, wherein the upper part of the spray frame is communicated with a liquid inlet pipe, a plurality of spray heads for spraying liquid downwards are arranged in the spray frame, the spray heads are communicated with the liquid inlet pipe, the bottom end of the spray tower is communicated with a liquid outlet pipe, one side of the spray tower is communicated with a waste gas discharging pipe, the bottom in the spray frame is provided with an air guide frame, one end of the air guide frame is communicated with an exhaust pipe and is communicated with the outside of the spray frame, the bottom end of the air guide frame is provided with a through hole, the horizontal position of the air guide frame is lower than that of the waste gas discharging pipe, and the spray frame is internally provided with a real-time flow control structure. According to the utility model, the exhaust gas is introduced from the upper side and discharged from the lower side in a descending manner, so that the residence time of the exhaust gas in the spray frame is longer, meanwhile, the real-time flow control structure is arranged in the spray frame, the gas stock in the spray frame is used as a spray liquid flow real-time control end, the tail gas neutralization effect is better, and the response is more sensitive.

Description

Tail gas absorbing and treating device for post-treatment of vinyl silicone oil

Technical Field

The utility model relates to the technical field of industrial waste gas treatment, in particular to a tail gas absorbing and treating device for vinyl silicone oil aftertreatment.

Background

Vinyl silicone oils are predominantly vinyl-terminated polydimethylsiloxanes and vinyl-terminated polymethylvinylsiloxanes, which can provide products of different viscosities and vinyl contents as desired. The silicone oil is a common chemical reagent, which is prepared by hydrolyzing silicon dichloride with water to prepare an initial condensation ring body, cracking and rectifying the ring body to prepare a low ring body, then placing the ring body, a sealing head agent and a catalyst together for telogenic, thus obtaining various mixtures with different polymerization degrees, and removing low-boiling substances by reduced pressure distillation to prepare the silicone oil.

In the preparation process, a large amount of acid or alkaline tail gas can be generated, most of facilities for treating silicone oil synthesis tail gas are primary spray towers, the disadvantage of such treatment is that the acid or waste gas cannot be treated completely, the acid gas is easy to be removed incompletely only through sequential acid-base neutralization, and the problems of overlarge occupied area, cost consumption and the like can be further caused by adopting a multi-stage spray tower although the problems can be solved.

In order to solve the problems, the proposal is generated.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a tail gas absorbing and treating device for post-treatment of vinyl silicone oil, which solves the problems in the prior art.

(II) technical scheme

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a tail gas to vinyl silicone oil aftertreatment usefulness inhale processing apparatus, includes spray frame, spray frame's upper portion intercommunication has the feed liquor pipe, has arranged a plurality of sprinkler heads of spraying down in spray frame, and the sprinkler head communicates with each other with the feed liquor pipe, has the drain pipe in spray tower's bottom intercommunication, and its one side intercommunication has waste gas to be discharged into the pipe, spray frame in bottom set up an air guide frame, air guide frame's one end intercommunication has the blast pipe to lead to outside the spray frame, bottom array has the through-hole, and wherein air guide frame horizontal position is less than waste gas exhaust pipe, still be equipped with real-time flow control structure in the spray frame, its gas stock in according to spray frame controls spray liquid flow size.

Preferably, the spray tower comprises a spray frame, wherein the upper part of the spray frame is communicated with a liquid inlet pipe, a plurality of spray heads for spraying liquid downwards are arranged in the spray frame, the spray heads are communicated with the liquid inlet pipe, the bottom end of the spray tower is communicated with a liquid outlet pipe, and one side of the spray tower is communicated with an exhaust gas discharge pipe, and the spray tower is characterized in that: the bottom in the spray frame sets up an air guide frame, and the one end intercommunication of air guide frame has the blast pipe to lead to outside the spray frame, and bottom array has the through-hole, and wherein air guide frame horizontal position is less than waste gas exhaust pipe, still be equipped with real-time flow control structure in the spray frame, it is according to the gas stock in the spray frame and control the liquid flow size that sprays.

Preferably, the size of the floating block is smaller than that of the bottom end of the guide pipe, acid/alkali liquor can be normally discharged, and the floating block is driven to move upwards under the action of air buoyancy, so that the gap between the floating block and the guide pipe is increased.

Preferably, the exhaust pipe at one side of the spray frame is communicated with an air return pipe, valves for controlling opening and closing are respectively arranged at the air return pipe and the exhaust pipe, and meanwhile, a PH value meter is arranged at the joint.

(III) beneficial effects

After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages: according to the tail gas absorbing and treating device for vinyl silicone oil aftertreatment, the exhaust gas is introduced from the upper side and discharged from the lower side in a descending manner, so that the residence time of the exhaust gas in the spraying frame is longer, meanwhile, the real-time flow control structure is arranged in the spraying frame, the gas storage in the spraying frame is used as a real-time control end of the flow of spraying liquid, the tail gas neutralization effect is better, and the response is more sensitive.

Drawings

FIG. 1 is a schematic diagram of the present utility model;

fig. 2 is a cross-sectional elevation view of the spray booth of the present utility model.

In the figure: 1. a spray rack; 2. a liquid inlet pipe; 3. a spray head; 4. a liquid outlet pipe; 5. an exhaust gas discharge pipe; 6. an air guide frame; 7. an exhaust pipe; 8. a through hole; 9. a flow control structure; 91. a conduit; 92. a conduit; 93. a floating ball; 10. an air return pipe; 11. PH value meter; 12. a liquid storage tank; 13. a waste liquid tank.

Detailed Description

The utility model is further illustrated by the figures and examples.

As shown in fig. 1-2: the tail gas absorbing and treating device for post-treatment of vinyl silicone oil comprises a spray frame 1, wherein the upper part of the spray frame 1 is communicated with a liquid inlet pipe 2, a plurality of spray heads 3 for spraying liquid downwards are arranged in the spray frame 1, the spray heads 3 are communicated with the liquid inlet pipe 2, and the bottom end of a spray tower is communicated with a liquid outlet pipe 4.

The other end of the liquid inlet pipe 2 is communicated with an external liquid storage tank 12, and the liquid storage tank 12 is required to be arranged at the high position of the spray frame 1 so as to discharge liquid into the liquid storage tank through gravity. The other end of the liquid outlet pipe 4 is connected to a waste liquid tank 13.

Specifically, two spray frames 1 are adopted, one is used for spraying acid liquid and the other is used for spraying alkaline liquid, so that acid waste gas and alkaline waste gas generated by the reaction are respectively neutralized.

The technical point of the scheme is that firstly, the waste gas is considered to rise upwards, so that the waste gas is introduced from the upper side and discharged from the lower side in a descending way, and the residence time of the waste gas in the spray frame 1 is longer. Further, an air guide frame 6 is arranged at the bottom in the spray frame 1, one end of the air guide frame 6 is communicated with an exhaust pipe 7 and is communicated with the outside of the spray frame 1, and through holes 8 are arranged at the bottom end of the air guide frame, so that waste gas can be discharged from the through holes 8 of the air guide frame 6 at the bottom in the spray frame 1 only, and the upper part of the air guide frame 6 can be neutralized by spraying acid/alkali liquor.

One side of the spray frame 1 is communicated with an exhaust gas discharging pipe 5, and the position of the exhaust gas discharging pipe is higher than the height of the air guide frame 6.

The further design is that the flow of the spray liquid needs to be controlled according to the actual gas inlet amount and the residence time due to longer residence time of the waste gas in the spray frame 1, so that waste of spray acid/alkali liquid is avoided.

Thus, the present solution provides a real-time flow control structure 9 in the shower rack 1, which structure comprises a plurality of ducts 9291 communicating with the liquid inlet pipe 2, the outlet ends of the ducts 9291 being connected to the shower head 3. The guide tube 9291 is in a cone shape with a large upper part and a small lower part, a floating block is arranged at the outlet end of the guide tube 9291, the bottom of the floating block is connected with a floating ball 93 through a supporting rod, the size of the floating block is slightly smaller than that of the bottom end of the guide tube 9291, so that acid/alkali liquor can be normally discharged, when waste gas is gathered in the spray frame 1 more (cannot be discharged in time), the floating block is driven upwards by the action of the gas floating force to move upwards, so that acid/alkali liquor can be sprayed and discharged in a larger quantity, and further, the waste gas neutralization is realized more fully.

The flow control structure 9 mainly achieves the balance of the exhaust gas and the liquid passing amount (when the waste gas is more, the flow of the sprayed acid/alkali liquor is increased), and meanwhile, the gas stock in the spraying frame 1 is used as a spraying liquid flow real-time control end, so that the tail gas neutralization effect is better, the use is more convenient, and the response is more sensitive.

An air return pipe 10 is communicated with the exhaust pipe 7 at one side of the spray frame 1, and valves for controlling opening and closing are respectively arranged on the air return pipe 10 and the exhaust pipe 7. Meanwhile, a PH value meter 11 (conventional equipment) is arranged at the joint, when the measured value deviates from the set value, a valve at the exhaust pipe 7 is closed, and a valve at the muffler 10 is opened, so that reciprocating treatment is realized, and the neutralization treatment of the waste gas is more comprehensive.

The above-described embodiments are intended to suggest that, in view of the above description, various changes and modifications may be made by the worker without departing from the spirit of the utility model. The technical scope of the present utility model is not limited to the description, but the scope of protection must be determined according to the scope of claims.

Claims

1. The utility model provides a tail gas to vinyl silicone oil aftertreatment usefulness inhale processing apparatus, includes spray frame, and spray frame's upper portion intercommunication has the feed liquor pipe, has arranged a plurality of sprinkler heads of spraying downwards in spray frame, and the sprinkler head communicates with each other with the feed liquor pipe, and the bottom intercommunication at the spray tower has the drain pipe, and its one side intercommunication has waste gas to be discharged into the pipe, its characterized in that: the bottom in the spray frame sets up an air guide frame, and the one end intercommunication of air guide frame has the blast pipe to lead to outside the spray frame, and bottom array has the through-hole, and wherein air guide frame horizontal position is less than waste gas exhaust pipe, still be equipped with real-time flow control structure in the spray frame, it is according to the gas stock in the spray frame and control the liquid flow size that sprays.

2. The exhaust gas absorbing and treating device for post-treatment of vinyl silicone oil according to claim 1, wherein: the real-time flow control structure comprises a plurality of guide pipes communicated with the liquid inlet pipe, the outlet ends of the guide pipes are connected with the spray heads, the guide pipes are in the shape of cones with big upper parts and small lower parts, floating blocks are arranged at the outlet ends of the guide pipes, and floating balls are connected to the bottoms of the floating blocks through supporting rods.

3. The exhaust gas absorbing and treating device for post-treatment of vinyl silicone oil according to claim 2, wherein: the size of the floating block is smaller than that of the bottom end of the guide pipe, acid/alkali liquor can be normally discharged, and the floating block is driven to move upwards under the action of air buoyancy, so that the gap between the floating block and the guide pipe is increased.

4. The exhaust gas absorbing and treating device for post-treatment of vinyl silicone oil according to claim 1, wherein: the exhaust pipe at one side of the spray frame is communicated with an air return pipe, valves for controlling opening and closing are respectively arranged at the air return pipe and the exhaust pipe, and meanwhile, a PH value meter is arranged at the joint.