CN215352797U

CN215352797U - VOC tail gas recovery device of dioxolane production

Info

Publication number: CN215352797U
Application number: CN202121903295.5U
Authority: CN
Inventors: 张祥; 孙开峰; 高桂林; 刘涛; 李德芝
Original assignee: Shandong Luhua Senxuan New Material Co ltd
Current assignee: Shandong Luhua Senxuan New Material Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-12-31
Anticipated expiration: 2031-08-13

Abstract

A VOC tail gas recovery device for dioxolane production relates to the field of tail gas recovery machinery and comprises a raw material production box and a storage tank, wherein the storage tank is communicated with a first air outlet pipe, the raw material production box is communicated with a second air outlet pipe, the first air outlet pipe is communicated with the second air outlet pipe, the second air outlet pipe is connected with a condensation recycling assembly, the condensation recycling assembly is connected with the input end of an air pump, the output end of the air pump is connected with a tail gas absorption assembly, a spray cleaning assembly is arranged inside the tail gas absorption assembly, and the tail gas absorption assembly is respectively connected with an incineration assembly and a sewage treatment assembly; the device can absorb and burn various tail gases generated in the production process of dioxolane to the maximum extent, has good effect of thorough absorption, avoids a large amount of tail gases from being directly discharged to the environment, has high degree of automation, and improves the efficiency of tail gas treatment.

Description

VOC tail gas recovery device of dioxolane production

Technical Field

The utility model relates to the field of tail gas recovery machinery, in particular to a VOC tail gas recovery device for dioxolane production.

Background

Dioxolane is also called 1, 3-dioxolane as an excellent organic solvent, has wide application, is mainly used as a solvent of oil and fat, an extracting agent, an electrolytic solvent of a lithium battery, a chlorine-based solvent stabilizer, a drug intermediate and a raw material of co-polyformaldehyde, and can also be used as a silk finishing agent and a sealing glue raw material.

The tail gas source in the dioxolane production process mainly comprises three parts which are respectively non-condensable gas of a raw material production box, and the main components of the tail gas source are about 95% of nitrogen, about 4% of water vapor, a small amount of dioxolane and other materials; tail gas is discharged from a breather valve of a tank area storage tank, and the main components of the tail gas are 99% of nitrogen, trace dioxolane and other materials; the filling box sucks tail gas, the main components of the tail gas are 99% of air and trace dioxolane steam, the three tail gas sources are not completely absorbed originally, a large amount of tail gas is discharged into the atmosphere, and the environment is greatly polluted while the life health and safety of people are injured.

SUMMERY OF THE UTILITY MODEL

Aiming at the problem that tail gas recovery treatment in the dioxolane production process is not complete in the prior art, the utility model provides the device for recovering the VOC tail gas generated in dioxolane production, which can avoid the problem.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a VOC tail gas recovery device for dioxolane production comprises a raw material production box and a storage tank, wherein the storage tank is communicated with a first gas outlet pipe, the raw material production box is communicated with a second gas outlet pipe, the first gas outlet pipe is communicated with the second gas outlet pipe, the second gas outlet pipe is connected with a condensation recycling assembly, the condensation recycling assembly is connected with the input end of a gas pump, the output end of the gas pump is connected with a tail gas absorption assembly, a spraying and cleaning assembly is arranged inside the tail gas absorption assembly, and the tail gas absorption assembly is respectively connected with an incineration assembly and a sewage treatment assembly; the device can improve the tail gas recovery efficiency to the maximum extent, the recovery treatment is thorough, and the environment can not be polluted.

In some embodiments, the tail gas absorption assembly comprises an absorption tower, an air inlet is arranged on one side of the lower part of the absorption tower, the air inlet is connected with the output end of the air pump, a liquid outlet is arranged on the other side, far away from the air inlet, of the lower part of the absorption tower, the liquid outlet is connected with the sewage treatment assembly, a filler is arranged inside the absorption tower, filler pressing plates are respectively arranged at two ends of the filler, an air outlet is arranged at the top end inside the absorption tower, and the air outlet is connected with the incineration assembly; and (4) adsorbing the tail gas in a centralized way by utilizing an absorption tower.

In some embodiments, the spray cleaning assembly comprises a mounting table, a water tank and a first water pump are slidably matched on the mounting table, the water tank is connected with an input end of the first water pump, an output end of the first water pump is connected with a water pipe, the water pipe extends into the absorption tower, two sprayers are arranged on the water pipe, the two sprayers are vertically arranged relative to the water pipe, and a water inlet pipe is arranged on the water tank; the dioxolane was washed with pure water.

In some embodiments, the condensation recycling assembly comprises a fixed table, a condenser is arranged on the fixed table, a liquid outlet pipe is arranged on the condenser, a liquid outlet valve is arranged on the liquid outlet pipe, one end of the liquid outlet pipe, which is far away from the condenser, is connected with the raw material production tank, one end of the condenser is connected with the input end of the air pump, and one end of the condenser, which is far away from the input end of the air pump, is connected with the raw material production tank; most of tail gas is condensed, and then dioxolane is recycled to the raw material production box for secondary rectification.

In some embodiments, the incineration assembly comprises a mounting frame, an incinerator is arranged on the mounting frame, an air guide pipe is arranged on the incinerator, an air guide valve is arranged on the air guide pipe, and one end of the air guide pipe, which is far away from the incinerator, is connected with the air outlet; and incinerating the tail gas which cannot be finally absorbed and treated.

In some embodiments, the sewage treatment assembly comprises a drain pipe, the drain pipe is connected with the drain port, a drain valve is arranged on the drain pipe, one end of the drain pipe, which is far away from the drain port, is connected with an input end of a second water pump, an output end of the second water pump is connected with a sewage treatment tank, and a drain pipe is arranged on the sewage treatment tank; and the absorption liquid is discharged to the outside after being purified.

In some embodiments, an activated carbon layer is further arranged above the filler; and adsorbing the tail gas twice.

In some embodiments, a slide rail is arranged on the mounting table, a slide block is slidably matched on the slide rail, and the water tank and the first water pump are arranged on the slide block; the sprayer is driven to move horizontally.

In some embodiments, the spray cleaning assembly further comprises a drive motor.

In some embodiments, the first outlet pipe and the second outlet pipe are respectively provided with a first outlet valve and a second outlet valve.

The VOC tail gas recovery device based on dioxolane production comprises a raw material production box and a storage tank, wherein the storage tank is communicated with a first gas outlet pipe, the raw material production box is communicated with a second gas outlet pipe, the first gas outlet pipe is communicated with the second gas outlet pipe, the second gas outlet pipe is connected with a condensation recycling component, the condensation recycling component is connected with the input end of a gas pump, the output end of the gas pump is connected with a tail gas absorption component, a spray cleaning component is arranged inside the tail gas absorption component, and the tail gas absorption component is respectively connected with an incineration component and a sewage treatment component; the device can absorb and burn various tail gases generated in the production process of dioxolane to the maximum extent, has good effect of thorough absorption, avoids a large amount of tail gases from being directly discharged to the environment, has high degree of automation, and improves the efficiency of tail gas treatment.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 labeled A;

fig. 3 is a partially enlarged view of reference character B in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 3, a device for recovering VOC tail gas from dioxolane production comprises a raw material production tank 2 and a storage tank 1, wherein the storage tank is communicated with a first gas outlet pipe 11, the raw material production tank is communicated with a second gas outlet pipe 21, the first gas outlet pipe is communicated with the second gas outlet pipe, the second gas outlet pipe is connected with a condensation recycling component 3, the condensation recycling component is connected with an input end of a gas pump 36, an output end of the gas pump is connected with a tail gas absorption component 4, a spray cleaning component is arranged in the tail gas absorption component, and the tail gas absorption component is respectively connected with an incineration component 5 and a sewage treatment component 6; the condensation reuse assembly in the device ensures that a plurality of tail gases are condensed by low-temperature water at 7 ℃ and then liquid dioxolane materials are recovered, the low-temperature condensation ensures that most dioxolane and other impurity gases are changed into liquid, a small amount of non-liquefied dioxolane and other impurity gases are introduced into the tail gas absorption assembly, the liquid which is liquefied and absorbed is sent back to the raw material production box again for rectification, the spraying and cleaning assembly is directly washed by pure water and can wash the dioxolane gases to the maximum extent, a part of dioxolane is mixed in the pure water and is left at the bottom of the tail gas absorption assembly, and when the concentration of an absorption liquid at the bottom of the tail gas absorption assembly reaches a certain degree, the sewage treatment assembly performs concentrated recovery and purification treatment on the absorption liquid, so that the absorption liquid after purification meets the national emission standard; the air pump can control the force of filling case suction, still can have a small part of tail gas not absorbed completely after absorption treatment, lets this part of gas in burning the subassembly again and carries out concentrated incineration disposal this moment. Ensure that tail gas is all accomplished by recovery processing, can not directly discharge to the air in, device degree of automation is high, and tail gas recovery processing efficiency is high.

In specific implementation of the embodiment of the present invention, as shown in fig. 1 and fig. 2, the tail gas absorption assembly includes an absorption tower 42, one side of the lower portion of the absorption tower is provided with an air inlet 41, the air inlet is connected to an output end of the air pump, the other side of the lower portion of the absorption tower, which is far away from the air inlet, is provided with a liquid discharge port 411, the liquid discharge port is connected to the sewage treatment assembly, a filler 43 is arranged inside the absorption tower, two ends of the filler are respectively provided with a filler pressing plate, the top end of the inside of the absorption tower is provided with an air outlet 491, and the air outlet is connected to the incineration assembly; and a small amount of non-liquefied dioxolane and other impurity gases are introduced into the absorption tower through the air pump along the air inlet, the dioxolane gases are further adsorbed after the filler is absorbed, and finally the tail gases which are not completely absorbed flow into the incineration assembly from the air outlet.

In specific implementation of the embodiment of the present invention, as shown in fig. 1 and 2, the spray cleaning assembly includes a mounting table 44, a water tank 46 and a first water pump 47 are slidably fitted on the mounting table, the water tank is connected to an input end of the first water pump, an output end of the first water pump is connected to a water pipe 48, the water pipe extends into the absorption tower, two sprayers 49 are disposed on the water pipe, the two sprayers are vertically disposed with respect to the water pipe, and a water inlet pipe is disposed on the water tank.

According to further refinement of the scheme of the embodiment of the utility model, a slide rail 45 is arranged on the mounting table, a slide block 451 is in sliding fit with the slide rail, and the water tank and the first water pump are arranged on the slide block; and the sprayer moves back and forth in the absorption tower along the slide rail.

According to the further refinement of the scheme of the embodiment of the utility model, the spraying cleaning assembly further comprises a driving motor, and the driving motor drives the sliding block to horizontally move along the sliding rail; the two sprayers can move back and forth along a horizontal plane, contact with the tail gas introduced from the gas inlet to the maximum extent, enable the tail gas to settle to the bottom of the absorption tower, and enable the water sprayed from the upper part and the gas introduced from the lower part to contact in the filler to achieve the effect of tail gas adsorption; the water tank provides a pure water source, the first water pump provides power for spraying, and the spraying size is adjustable.

When the embodiment of the utility model is implemented specifically, as shown in fig. 1 and 3, the condensation recycling assembly comprises a fixed table 31, a condenser 38 is arranged on the fixed table, a liquid outlet pipe 32 is arranged on the condenser, a liquid outlet valve 33 is arranged on the liquid outlet pipe, one end of the liquid outlet pipe, which is far away from the condenser, is connected with the raw material production tank, one end of the condenser is connected with the input end of the air pump, and one end of the condenser, which is far away from the input end of the air pump, is connected with the raw material production tank; the first recovery step is carried out by using a condenser to change the off-gas from a gaseous state to a liquid state.

In the specific implementation of the embodiment of the present invention, as shown in fig. 1, the incineration assembly includes a mounting bracket 51, an incinerator 55 is disposed on the mounting bracket, an air duct 52 is disposed on the incinerator, an air guide valve 53 is disposed on the air duct, and one end of the air duct far away from the incinerator is connected to the air outlet; the unabsorbed tail gas is introduced into the incinerator for incineration, so that the tail gas is completely treated and the harmful tail gas is not discharged into the air.

When the embodiment of the utility model is implemented specifically, as shown in fig. 1, the sewage treatment assembly comprises a drain pipe 63 connected with the drain port, a drain valve 64 is arranged on the drain pipe, one end of the drain pipe, which is far away from the drain port, is connected with an input end of a second water pump 62, an output end of the second water pump is connected with a sewage treatment tank 66, and a drain pipe 65 is arranged on the sewage treatment tank; and purifying the absorption liquid by using the sewage treatment tank, and discharging the absorption liquid to the external environment after the absorption liquid is nontoxic.

In a further refinement of the embodiment of the utility model, the storage tank is arranged on a storage tank mounting frame 13.

According to the further refinement of the scheme of the embodiment of the utility model, the air pump, the first water pump and the second water pump are respectively provided with a driving motor.

When the embodiment of the present invention is implemented specifically, as shown in fig. 1, the first outlet pipe and the second outlet pipe are respectively provided with a first outlet valve 12 and a second outlet valve 22; the first air outlet valve, the second air outlet valve and the air pump are matched to control air outlet and air outlet rate.

In the specific implementation of the embodiment of the present invention, as shown in fig. 1 and fig. 2, an activated carbon layer 54 is further disposed above the filler; carry out the second to the tail gas in the VOC and adsorb, improve the adsorption efficiency of absorption tower.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims

1. The utility model provides a VOC tail gas recovery unit of dioxolane production, a serial communication port, including raw materials production case and storage tank, the intercommunication has first outlet duct on the storage tank, the intercommunication has the second outlet duct on the raw materials production case, first outlet duct and second outlet duct are linked together, the second outlet duct is connected with the condensation and recycles the subassembly, the input of condensation and recycle the subassembly and connect the air pump, the output of air pump is connected with the tail gas and absorbs the subassembly, the inside of tail gas absorption subassembly is provided with sprays the washing subassembly, the tail gas absorbs the subassembly and connects respectively and burn subassembly and sewage treatment subassembly.

2. The device for recycling the VOC tail gas produced by dioxolane according to claim 1, wherein the tail gas absorption assembly comprises an absorption tower, one side of the lower part of the absorption tower is provided with an air inlet, the air inlet is connected with the output end of the air pump, the other side of the lower part of the absorption tower, which is far away from the air inlet, is provided with a liquid discharge port, the liquid discharge port is connected with the sewage treatment assembly, the inside of the absorption tower is provided with a filler, two ends of the filler are respectively provided with a filler pressing plate, the top end of the inside of the absorption tower is provided with an air outlet, and the air outlet is connected with the incineration assembly.

3. The recycling device for the VOC tail gas produced by dioxolane according to claim 2, wherein the spraying cleaning component comprises a mounting platform, a water tank and a first water pump are slidably matched on the mounting platform, the water tank is connected with the input end of the first water pump, the output end of the first water pump is connected with a water pipe, the water pipe extends into the absorption tower, two sprayers are arranged on the water pipe, the two sprayers are vertically arranged relative to the water pipe, and a water inlet pipe is arranged on the water tank.

4. The device for recycling the VOC tail gas produced by dioxolane according to claim 1, wherein said condensation recycling assembly comprises a fixed table, said fixed table is provided with a condenser, said condenser is provided with a liquid outlet pipe, said liquid outlet pipe is provided with a liquid outlet valve, one end of said liquid outlet pipe far away from said condenser is connected with said raw material production tank, one end of said condenser is connected with an input end of said air pump, and one end of said condenser far away from said input end of said air pump is connected with said raw material production tank.

5. The dioxolane production VOC tail gas recovery device according to claim 2, wherein the incineration assembly comprises a mounting rack, the mounting rack is provided with an incinerator, the incinerator is provided with a gas guide tube, the gas guide tube is provided with a gas guide valve, and one end of the gas guide tube, which is far away from the incinerator, is connected with the gas outlet.

6. The recycling device for VOC exhaust gas produced by dioxolane according to claim 2, wherein said sewage treatment component comprises a drain pipe, said drain pipe is connected with said drain port, said drain pipe is provided with a drain valve, one end of said drain pipe far away from said drain port is connected with an input end of a second water pump, an output end of said second water pump is connected with a sewage treatment tank, and said sewage treatment tank is provided with a drain pipe.

7. The recycling device for VOC exhaust gas produced by dioxolane according to claim 2, wherein an activated carbon layer is further disposed above the filler.

8. The device for recycling the VOC exhaust gas generated in the production of dioxolane according to claim 3, wherein a slide rail is arranged on the mounting table, a slide block is slidably matched on the slide rail, and the water tank and the first water pump are arranged on the slide block.

9. The recycling device for VOC exhaust gas produced by dioxolane according to claim 1, wherein said first outlet duct and said second outlet duct are respectively provided with a first outlet valve and a second outlet valve.