CN214634198U - Adsorption tower steam stripping system - Google Patents
Adsorption tower steam stripping system Download PDFInfo
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- CN214634198U CN214634198U CN202023212200.3U CN202023212200U CN214634198U CN 214634198 U CN214634198 U CN 214634198U CN 202023212200 U CN202023212200 U CN 202023212200U CN 214634198 U CN214634198 U CN 214634198U
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Abstract
The utility model belongs to the technical field of the chemical industry, concretely relates to adsorption tower strip system, including adsorption tower and the nitrogen gas circulating line who connects the adsorption tower entry and export, be connected with the heating furnace on the nitrogen gas circulating line, heating furnace entry linkage nitrogen gas entry pipeline. The utility model discloses utilize the hot nitrogen system to strip waste agent in to the adsorption tower, carry out the desorption to waste oil in the adsorbent, ensure that the adsorbent hydrocarbon content in the adsorption tower is qualified.
Description
Technical Field
The utility model belongs to the chemical industry field, concretely relates to adsorption tower strip system.
Background
Steam stripping means that volatile toxic and harmful substances in the wastewater are diffused into a gas phase according to a certain proportion by directly contacting the wastewater with steam, so that the purpose of separating pollutants from the wastewater is achieved. When the adsorption tower of the adsorption unit of the aromatic hydrocarbon factory stops, the waste agent in the adsorption tower needs to be discharged and delivered to a waste agent treatment factory for safe treatment. However, because the oil is stored in the pores of the adsorbent, the oil is directly delivered to a waste treatment factory for treatment, which causes waste, and the waste treatment also increases the cost.
Disclosure of Invention
According to the defect that above-mentioned prior art exists, the utility model aims at providing an adsorption tower strip system, to adsorption tower reconfiguration pipeline, link to each other with hot nitrogen system, utilize hot nitrogen to strip for the adsorption tower.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an adsorption tower strip system, includes adsorption tower and the nitrogen gas circulation pipeline of connecting the adsorption tower entry and export, be connected with the heating furnace on the nitrogen gas circulation pipeline, the heating furnace entry connection nitrogen gas entry pipeline.
Further, the outlet of the adsorption tower is sequentially connected with an air cooler, a high-pressure separator, a compressor and a heating furnace through a nitrogen circulating pipeline, and the outlet of the heating furnace is connected to the inlet of the adsorption tower through the nitrogen circulating pipeline.
Further, the inlet of the heating furnace is connected with a nitrogen pipe network through a nitrogen inlet pipeline.
Further, the nitrogen inlet line is disposed between the compressor outlet and the furnace inlet.
Further, the bottom of the high branch tank is connected with a liquid drainage underground tank.
Further, the compressor flow is 7000M3/h。
Furthermore, the adsorption tower comprises a plurality of beds, each bed is provided with a set of stripping system, and a nitrogen circulating pipeline is connected to an inlet pipeline and an outlet pipeline of each bed.
The adsorption tower stripping method is that nitrogen of over 0.5MPa and 190 deg.c is introduced into each bed layer of the adsorption tower, and each bed layer is stripped separately to eliminate oil and gas from the adsorbent and the eliminated oil and gas is fed to the high molecular tank.
Furthermore, after the steam stripping is finished, the hydrocarbon content of the last layer of sampling of the adsorption tower is less than 100ppm and is qualified.
Further, the nitrogen gas is circulated by the compressor, and the working flow of the compressor is 7000M3/h。
The utility model has the advantages that: the utility model discloses utilize the hot nitrogen system to strip waste agent in to the adsorption tower, carry out the desorption to waste oil in the adsorbent, ensure that the adsorbent hydrocarbon content in the adsorption tower is qualified.
Drawings
FIG. 1 is a process flow diagram of a stripping system of an adsorption tower;
in the figure: 1. the system comprises an adsorption tower, 2, an air cooler, 3, a high-pressure separation tank, 4, a compressor, 5, a heating furnace, 6, a nitrogen inlet pipeline, 7, a nitrogen circulating pipeline, A and a liquid discharge underground tank.
Detailed Description
In order to make the structure and function of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solution in the embodiments of the present invention.
Referring to the attached drawing 1, the adsorption tower stripping system comprises an adsorption tower 1 and a nitrogen circulating pipeline 7 connected with an inlet and an outlet of the adsorption tower, wherein the outlet of the adsorption tower is sequentially connected with an air cooler 2, a high-pressure separator 3, a compressor 4 and a heating furnace 5 through the nitrogen circulating pipeline 7, nitrogen is heated to more than 190 ℃ through the heating furnace 5, the outlet of the heating furnace 5 is connected to the inlet of the adsorption tower through the nitrogen circulating pipeline 7, the inlet of the heating furnace is connected with a nitrogen pipe network through a nitrogen inlet pipeline 6, and the nitrogen inlet pipeline 6 is arranged between the outlet of the compressor 4 and the inlet of the heating furnace 5.
Based on the technical scheme, high-pressure 2.0Mpa nitrogen of a nitrogen pipe network is supplemented from the outlet of the compressor, the nitrogen circulating pipeline is kept above 0.5Mpa, and the nitrogen can realize the stripping function. Then the compressor is started to establish a nitrogen circulation system. The working flow of the compressor is controlled at 7000M3/h。
Further, the bottom of the high-pressure separation tank 3 is connected with a drainage underground tank.
Further, the adsorption tower 1 comprises a plurality of beds, each bed is provided with a set of stripping system, and a nitrogen circulating pipeline is connected to an inlet pipeline and an outlet pipeline of each bed.
The stripping method of adsorption tower is characterized by that in every bed layer of adsorption tower the nitrogen gas whose pressure is above 0.5MPa and temp. is fed into every bed layer to make every bed layer implement stripping alone so as to remove oil gas from adsorbent, and the removed oil gas is fed into high-molecular tank.
Based on the technical scheme, 24 bed layers are respectively stripped by opening the extract liquid and raffinate switch valve of each layer of adsorption tower, C8A in the adsorbent is removed by stripping each layer, the removed oil gas is sent to a high-molecular tank, and after the stripping is finished, the content of the sampled hydrocarbon in the last layer of the adsorption tower is qualified when the content is less than 100 ppm.
The utility model discloses join in marriage new pipeline at adsorption tower top extract, raffinate, join in marriage new pipeline at the bottom extract of adsorption tower, raffinate, join in marriage the pipeline newly, link to each other with the hot nitrogen system, utilize hot nitrogen to strip for the adsorption tower.
The above list is only the preferred embodiment of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.
Claims (5)
1. An adsorption tower stripping system is characterized in that: including adsorption tower and the nitrogen gas circulation pipeline of connecting the adsorption tower entry and export, be connected with the heating furnace on the nitrogen gas circulation pipeline, heating furnace entry linkage nitrogen gas entry pipeline, the export of adsorption tower has connected gradually air cooler, high minute jar, compressor and heating furnace through nitrogen gas circulation pipeline, the export of heating furnace is passed through nitrogen gas circulation pipeline and is connected to the adsorption tower entry.
2. The adsorption column stripping system of claim 1, wherein: the nitrogen inlet pipeline is arranged between the outlet of the compressor and the inlet of the heating furnace.
3. The adsorption column stripping system of claim 1, wherein: the bottom of the high-branch tank is connected with a liquid drainage underground tank.
4. The adsorption column stripping system of claim 1, wherein: the flow rate of the compressor is 7000M3/h。
5. The adsorption column stripping system according to any one of claims 1 to 4, wherein: the adsorption tower comprises a plurality of beds, each bed is provided with a set of stripping system, and a nitrogen circulating pipeline is connected to an inlet pipeline and an outlet pipeline of each bed.
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CN202023212200.3U CN214634198U (en) | 2020-12-28 | 2020-12-28 | Adsorption tower steam stripping system |
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CN202023212200.3U CN214634198U (en) | 2020-12-28 | 2020-12-28 | Adsorption tower steam stripping system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112494993A (en) * | 2020-12-28 | 2021-03-16 | 大连福佳·大化石油化工有限公司 | Adsorption tower stripping system and stripping method thereof |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112494993A (en) * | 2020-12-28 | 2021-03-16 | 大连福佳·大化石油化工有限公司 | Adsorption tower stripping system and stripping method thereof |
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