CN219429911U - Dimethyl sulfoxide rectification vacuum tail gas treatment device - Google Patents
Dimethyl sulfoxide rectification vacuum tail gas treatment device Download PDFInfo
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- CN219429911U CN219429911U CN202222966626.0U CN202222966626U CN219429911U CN 219429911 U CN219429911 U CN 219429911U CN 202222966626 U CN202222966626 U CN 202222966626U CN 219429911 U CN219429911 U CN 219429911U
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- tail gas
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- dimethyl sulfoxide
- flue gas
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Abstract
The utility model discloses a dimethyl sulfoxide rectifying vacuum tail gas treatment device, wherein rectifying vacuum tail gas is connected with an exhaust fan liquid separating tank through an exhaust fan; the top of the exhaust fan liquid separating tank is connected with a rectification tail gas buffer tank which is connected with the continuous incinerator. The continuous incinerator is connected with a waste heat boiler, the waste heat boiler is connected with a sulfur-containing flue gas aftercooler, and the sulfur-containing flue gas aftercooler is connected to the water washing device through a flue gas induced draft fan. The tail gas enters an exhaust fan liquid separating tank through a fan by a vacuum pump, the liquid phase after liquid separation enters a vacuum pump waste liquid tank, the gas phase enters a rectification tail gas buffer tank for buffering, and then enters an incinerator (a matched waste heat boiler) for incineration, and all the tail gas is converted into SO 2 Then enters a liquid alkali desulfurization device to finally reach the emission standard. The heat generated by incineration can be utilized to generate steam of 0.8MPa and 0.4MPa respectively through heat exchange of a waste heat boiler and a sulfur-containing flue gas aftercooler, so that the energy utilization rate is improved.
Description
Technical Field
The utility model belongs to the field of chemical industry, and particularly relates to a dimethyl sulfoxide rectifying vacuum tail gas treatment device.
Background
In the dimethyl sulfoxide rectifying process, negative pressure of the system is required to be kept through a vacuum pump, so that substances such as dimethyl sulfoxide, dimethyl sulfone and the like can exist in the vacuum tail gas, meanwhile, the smell of the vacuum tail gas is bad, and if the material is not properly treated, the waste of the material can be caused, and the surrounding environment can be influenced. Therefore, the rectifying vacuum tail gas needs to be treated, firstly, the dimethyl sulfoxide and the dimethyl sulfoxide in the rectifying vacuum tail gas are fully utilized, and secondly, the taste of the tail gas is reduced and the emission standard can be reached. The treatment can achieve the aim of environmental protection and increase economic benefit.
The common tail gas treatment modes at present adopt solvent absorption or ozone catalytic oxidation and other modes for treatment, but the methods have difficulty in separation or equipment requirements and the like.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a dimethyl sulfoxide rectifying vacuum tail gas treatment device which is simple in structure, energy-saving and environment-friendly, can effectively treat rectifying vacuum tail gas and ensures that the discharged tail gas meets the environment-friendly requirement.
A dimethyl sulfoxide rectifying vacuum tail gas treatment device is characterized in that rectifying vacuum tail gas is connected with an exhaust fan liquid separating tank through an exhaust fan;
the top of the exhaust fan liquid separating tank is connected with a rectification tail gas buffer tank which is connected with the continuous incinerator.
The continuous incinerator is connected with a waste heat boiler, the waste heat boiler is connected with a sulfur-containing flue gas aftercooler, and the sulfur-containing flue gas aftercooler is connected to the water washing device through a flue gas induced draft fan.
The continuous incinerator is provided with a natural gas buffer tank and an air inlet tank.
The bottom of the liquid separating tank of the exhaust fan is connected with the waste liquid tank of the vacuum pump.
And separating and recovering part of dimethyl sulfoxide from the rectification vacuum tail gas, and burning the dimethyl sulfoxide which cannot be recovered to generate sulfur-containing flue gas and then sending the sulfur-containing flue gas to a liquid alkali absorption device for treatment. Meanwhile, the heat generated in the incineration process can be utilized to generate steam of 0.8MPa and 0.4MPa, so that the purpose of saving energy is achieved.
The process of the utility model is that firstly, the rectifying vacuum tail gas is separated to recycle a part of dimethyl sulfoxide, and then the dimethyl sulfoxide and dimethyl sulfone which can not be recycled are sent into a continuous incinerator to be incinerated, comprising the following processes:
the rectified vacuum tail gas enters an exhaust fan liquid separating tank through a fan, and a liquid phase after liquid separation enters a vacuum pump waste liquid tank and then is pumped to a neutral sulfoxide tank to enter a rectification system again; the gas phase enters a continuous incinerator through a rectifying tail gas buffer tank, and the feeding flow is 500Nm 3 And/h, simultaneously, natural gas is respectively fed into a continuous incinerator through a gas buffer tank and air, the temperature in the incinerator is 500-650 ℃, the control can be performed by controlling the flow of the fuel natural gas, and the air is ensuredExcessive amount leads to complete combustion; the temperature of the sulfur-containing flue gas generated by incineration is reduced to 150 ℃ after heat exchange is carried out between the waste heat boiler and desalted water, and meanwhile, 0.8MPa of steam is generated and sent to a 0.8MPa steam pipe network. The heat exchange temperature of the sulfur-containing flue gas entering the aftercooler and the desalted water is reduced to 25 ℃, and meanwhile, 0.4MPa of steam is generated and sent to a 0.4MPa steam pipe network; and sending the cooled sulfur-containing flue gas to a water scrubber through a flue gas induced draft fan.
The tail gas treatment device provided by the utility model can recycle part of dimethyl sulfoxide in tail gas, and convert the part which cannot be recycled into SO 2 Then can be sent to a liquid alkali desulfurization device for absorption treatment; the heat generated in the incineration process is utilized, and the energy utilization rate is improved.
Drawings
Fig. 1 is a simple structure diagram of a dimethyl sulfoxide rectifying vacuum tail gas treatment device.
Exhaust fan 1, exhaust fan liquid separation pot 2, air entering pot 3, rectification tail gas buffer pot 4, vacuum pump waste liquid tank 5, continuous incinerator 6, exhaust-heat boiler 7, natural gas buffer pot 8, draught fan 9, sulfur-containing flue gas aftercooler 10.
Form-to-form equipment model
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
example 1
A dimethyl sulfoxide rectifying vacuum tail gas treatment device is characterized in that rectifying vacuum tail gas is connected with an exhaust fan liquid separating tank 2 through an exhaust fan 1;
the top of the exhaust fan liquid separating tank 2 is connected with a rectification tail gas buffer tank 4, and the rectification tail gas buffer tank 4 is connected with a continuous incinerator 6.
The continuous incinerator 6 is connected with the waste heat boiler 7, the waste heat boiler 7 is connected with the sulfur-containing flue gas aftercooler 10, and the sulfur-containing flue gas aftercooler 10 is connected to the water washing device through the flue gas induced draft fan 9.
The continuous incinerator 6 is provided with a natural gas buffer tank 8 and an air inlet tank 3.
The bottom of the exhaust fan liquid separating tank 2 is connected with a vacuum pump waste liquid tank 5.
Example 2
A rectifying vacuum tail gas treatment process and device comprise the following steps:
the vacuum pump is connected with a pipeline through an exhaust fan 1 and an exhaust fan liquid separating tank 2, the lower part of the exhaust fan liquid separating tank 4 is connected to a feed inlet at the upper part of a waste liquid tank 5 of the vacuum pump through a pipeline to discharge separated liquid phase, and then the separated liquid phase is pumped to a neutral sulfoxide tank for recycling; the upper part of the exhaust fan liquid separating tank 2 is connected with a rectification tail gas buffer tank 4 through a pipeline, and gas phase enters the continuous incinerator through the rectification tail gas buffer tank, and the feeding flow is 500Nm 3 /h; the gas buffer tank 8 and the air inlet tank 3 are respectively connected with openings on the side surface of the incinerator, the pressure of the continuous incineration hearth is 2200Pa, the temperature is 500-650 ℃, and the temperature of the outer shell of the incinerator is not more than 200 ℃; the waste heat boiler 7 is directly connected with the incinerator 6, the temperature of the sulfur-containing flue gas generated by incineration is reduced to 150 ℃ after the heat exchange between the waste heat boiler and desalted water, and meanwhile, 0.8MPa of steam is generated and is sent to a 0.8MPa steam pipe network, the water tank and the steam drum of the waste heat boiler are automatically fed, and the liquid level of the water tank is controlled between 85% and 95%; the waste heat boiler 7 and the pipeline are connected with the sulfur-containing flue gas aftercooler 10, the heat exchange temperature of the sulfur-containing flue gas entering the aftercooler and the desalted water is reduced to 25 ℃, and meanwhile, 0.4MPa of steam is generated and sent to a 0.4MPa steam pipe network; the cooled sulfur-containing flue gas is sent to a water scrubber through a flue gas induced draft fan 9.
When the process and the device are adopted to treat the carbon disulfide tail gas, the oxygen content at the inlet of the sulfur-containing flue gas aftercooler f is ensured to be about 10 percent, SO that sulfide in the tail gas is ensured to be converted into SO 2 。
Claims (4)
1. The dimethyl sulfoxide rectifying vacuum tail gas treatment device is characterized in that rectifying vacuum tail gas is connected with an exhaust fan liquid separating tank (2) through an exhaust fan (1);
the top of the exhaust fan liquid separating tank (2) is connected with a rectification tail gas buffer tank (4), and the rectification tail gas buffer tank (4) is connected with a continuous incinerator (6).
2. The dimethyl sulfoxide rectifying vacuum tail gas treatment device according to claim 1, wherein the continuous incinerator (6) is connected with a waste heat boiler (7), the waste heat boiler (7) is connected with a sulfur-containing flue gas aftercooler (10), and the sulfur-containing flue gas aftercooler (10) is connected to the water washing device through a flue gas induced draft fan (9).
3. The dimethyl sulfoxide rectifying vacuum tail gas treatment device according to claim 1, wherein a natural gas buffer tank (8) and an air inlet tank (3) are arranged on the continuous incinerator (6).
4. The dimethyl sulfoxide rectifying vacuum tail gas treatment device according to claim 1, wherein the bottom of the exhaust fan liquid separating tank (2) is connected with the vacuum pump waste liquid tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222966626.0U CN219429911U (en) | 2022-11-08 | 2022-11-08 | Dimethyl sulfoxide rectification vacuum tail gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222966626.0U CN219429911U (en) | 2022-11-08 | 2022-11-08 | Dimethyl sulfoxide rectification vacuum tail gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219429911U true CN219429911U (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222966626.0U Active CN219429911U (en) | 2022-11-08 | 2022-11-08 | Dimethyl sulfoxide rectification vacuum tail gas treatment device |
Country Status (1)
| Country | Link |
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| CN (1) | CN219429911U (en) |
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2022
- 2022-11-08 CN CN202222966626.0U patent/CN219429911U/en active Active
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