CN216755434U - Adsorption tower steam stripping system - Google Patents
Adsorption tower steam stripping system Download PDFInfo
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- CN216755434U CN216755434U CN202123306254.0U CN202123306254U CN216755434U CN 216755434 U CN216755434 U CN 216755434U CN 202123306254 U CN202123306254 U CN 202123306254U CN 216755434 U CN216755434 U CN 216755434U
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Abstract
The utility model belongs to the technical field of petrochemical industry, and particularly relates to an adsorption tower stripping system which comprises an adsorption tower stripping pipeline, wherein an inlet and an outlet of the adsorption tower stripping pipeline are respectively connected with a nitrogen circulating pipeline, the adsorption tower stripping pipeline and the nitrogen circulating pipeline form a loop, and the nitrogen circulating pipeline is connected with a nitrogen inlet pipeline; the outlet of the stripping pipeline of the adsorption tower is sequentially connected with an air cooler, a high molecular tank, a compressor and a heating furnace through a nitrogen circulating pipeline, the outlet pipe section of the heating furnace is connected to the inlet of the stripping pipeline of the adsorption tower, and the outlet pipe section of the heating furnace is connected with a water-cooling heat exchanger through a branch. The utility model uses the hot nitrogen system to strip the waste agent in the adsorption tower, removes the waste oil in the adsorbent and ensures that the hydrocarbon content of the adsorbent in the adsorption tower is qualified. The water-cooling heat exchanger is additionally arranged at the front end of the adsorption tower, so that the cooling speed of the adsorption tower is increased and the overhaul period is shortened when the furnace is required to be shut down for cooling.
Description
Technical Field
The utility model belongs to the technical field of petrochemical industry, and particularly relates to an adsorption tower stripping 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 is stopped, the waste adsorbent in the adsorption tower needs to be discharged and treated, and the hydrocarbon content of the waste adsorbent treated is qualified when the hydrocarbon content is less than 200 ppm. However, direct treatment is wasteful due to the presence of oil in the adsorbent pores, and waste treatment also adds expense.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a stripping system for an adsorption tower, which can treat the waste adsorbent in the adsorption tower to ensure that the hydrocarbon content of the adsorbent in the adsorption tower is qualified.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: an adsorption tower stripping system comprises an adsorption tower stripping pipeline, wherein an inlet and an outlet of the adsorption tower stripping pipeline are respectively connected with a nitrogen circulating pipeline, the adsorption tower stripping pipeline and the nitrogen circulating pipeline form a loop, and the nitrogen circulating pipeline is connected with a nitrogen inlet pipeline; the outlet of the stripping pipeline of the adsorption tower is sequentially connected with an air cooler, a high molecular tank, a compressor and a heating furnace through a nitrogen circulating pipeline, the outlet pipe section of the heating furnace is connected to the inlet of the stripping pipeline of the adsorption tower, and the outlet pipe section of the heating furnace is connected with a water-cooling heat exchanger through a branch.
Furthermore, a heat exchange valve is arranged on the outlet pipe section of the heating furnace, two ends of the heat exchange valve are connected with the water-cooled heat exchanger through a heat exchanger inlet pipeline and a heat exchanger outlet pipeline, the heat exchanger inlet pipeline is provided with a heat exchanger inlet valve, and the heat exchanger outlet pipeline is provided with a heat exchanger outlet valve.
Further, the water-cooling heat exchanger is connected with circulating water inlet pipeline and circulating water outlet pipeline, and circulating water inlet pipeline is connected to fire hose, and circulating water outlet pipeline is connected to the row of rain.
Further, the nitrogen inlet line is disposed on the compressor inlet pipe section.
Further, the nitrogen inlet pipeline is connected with a nitrogen pipe network.
Further, a pressure valve is arranged on the outlet pipe section of the compressor.
Furthermore, the stripping pipeline of the adsorption tower is communicated with the inlet of the adsorption tower and each bed layer branch pipeline, a turbine filter is arranged at the outlet of the stripping pipeline of the adsorption tower, the outlet of the turbine filter is connected to the nitrogen circulation pipeline, and an outlet valve of the adsorption tower is arranged at the outlet of the turbine filter.
Furthermore, two adsorption towers are arranged in parallel, and each adsorption tower is provided with one adsorption tower stripping pipeline.
Furthermore, the stripping pipeline of the adsorption tower is provided with a bypass pipeline in parallel, and the bypass pipeline is communicated with the inlet and the outlet of the stripping pipeline of the adsorption tower.
The utility model has the beneficial effects that: the utility model uses the hot nitrogen system to strip the waste agent in the adsorption tower, removes the waste oil in the adsorbent and ensures that the hydrocarbon content of the adsorbent in the adsorption tower is qualified. The water-cooling heat exchanger is additionally arranged at the front end of the adsorption tower, so that the cooling speed of the adsorption tower is increased and the overhaul period is shortened when the furnace is required to be shut down for cooling.
Drawings
FIG. 1 is a process flow diagram of a stripping system of an adsorption tower;
FIG. 2 is an enlarged view of the stripping line of the adsorption column;
in the figure: 1. the system comprises an adsorption tower, 2, an air cooler, 3, a high-pressure separator, 4, a compressor, 5, a heating furnace, 6, a nitrogen inlet pipeline, 7, a nitrogen circulating pipeline, 8, a water-cooled heat exchanger, 9, a heat exchange valve, 10, a heat exchanger inlet pipeline, 11, a heat exchanger outlet pipeline, 12, a heat exchanger inlet valve, 13, a heat exchanger outlet valve, 14, a circulating water inlet pipeline, 15, a circulating water outlet pipeline, 16, a pressure valve, 17, a stripping pipeline, 18, a bypass pipeline, 19, a turbine filter, 20, a stripping inlet valve, 21, a bypass inlet valve, 22, an adsorption tower outlet valve, A, B and self-extinguishing water.
Detailed Description
In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention.
Referring to the attached drawings 1-2, an adsorption tower stripping system comprises an adsorption tower stripping pipeline, wherein an inlet and an outlet of the adsorption tower stripping pipeline are respectively connected with a nitrogen circulating pipeline 7, the adsorption tower stripping pipeline and the nitrogen circulating pipeline form a loop, the nitrogen circulating pipeline 7 is connected with a nitrogen inlet pipeline 6, and the nitrogen inlet pipeline 6 is connected with a nitrogen pipe network; the export of adsorption tower strip pipeline has connected gradually air cooler 2, high branch jar 3, compressor 4 and heating furnace 5 through nitrogen gas circulation pipeline 7, nitrogen gas inlet pipeline 6 sets up on compressor entry pipeline section, and heating furnace export pipeline section is connected to the entry of adsorption tower strip pipeline, and heating furnace export pipeline section passes through the branch road and connects water-cooling heat exchanger 8.
Based on the technical scheme, the isomerization compressor is utilized to improve the power gas source, the high-pressure 2.0Mpa nitrogen of the nitrogen pipe network is supplemented into the inlet of the compressor to be used as the stripping gas source, 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 7000M3H is used as the reference value. The outlet of the compressor is connected to a heating furnace and heated to 190 ℃. And introducing steam stripping to the top of the adsorption tower from the outlet of the heating furnace, and steam stripping each layer of the adsorption tower. Because the oil is in the adsorbent, the oil in the pores of the adsorbent can be brought out in the stripping process, the temperature of the adsorbent can not rise to 190 ℃ all the time in the process, but when the oil in the pores of the adsorbent is brought empty, the outlet temperature of the adsorption tower is changed to 190 ℃. And tail gas is introduced into an air cooler to be cooled to about 50 ℃ in the stripping process, and then the receipt condensate of the high-resolution tank is introduced. The high pressure separating tank has pressure of 0.5MPa and top gas is introduced into the inlet of the compressor. Finally, a large circulation is formed. The hydrocarbon content of each layer of the adsorption tower sampling is less than 200 ppm.
It should be noted that the outlet pipe section of the heating furnace and the inlet pipe section of the compressor are all part of the nitrogen circulating pipeline, which shows the position relationship of the connecting pipelines.
Further, a heat exchange valve 9 is arranged on the outlet pipe section of the heating furnace, two ends of the heat exchange valve 9 are connected with a water-cooling heat exchanger 8 through a heat exchanger inlet pipeline 10 and a heat exchanger outlet pipeline 11, a heat exchanger inlet valve 12 is arranged on the heat exchanger inlet pipeline 10, and a heat exchanger outlet valve 13 is arranged on the heat exchanger outlet pipeline 11. The water-cooling heat exchanger 8 is connected with a circulating water inlet pipeline 14 and a circulating water outlet pipeline 15, the circulating water inlet pipeline 14 is connected to a fire hose B, and the circulating water outlet pipeline 15 is connected to a rain drain A.
Based on above-mentioned technical scheme, adsorption tower 1 falls to 100 ℃ after, need stop heating furnace 5 cooling, at 100 ℃ cooling to 30 ℃ in-process, cooling speed is too slow, through reforming transform increased water-cooled heat exchanger 8, walks water-cooled heat exchanger flow for cooling speed, falls the adsorption tower temperature to 30 ℃.
Further, a pressure valve 16 is arranged on the compressor outlet pipe section. The pressure valve jumps when the pressure at the outlet of the compressor is overhigh, and pipelines and equipment are protected.
Furthermore, two adsorption towers 1 are arranged in parallel, the pipeline configuration of the two adsorption towers is the same, each adsorption tower is provided with an adsorption tower stripping pipeline 17, the adsorption tower stripping pipeline 17 is communicated with an inlet of the adsorption tower and each bed layer branch pipeline, a stripping inlet valve 20 is arranged at an inlet of the adsorption tower stripping pipeline 178, and an outlet of the adsorption tower stripping pipeline is connected with a turbine filter 19. The adsorption tower stripping pipeline 17 is provided with a bypass pipeline 18 in parallel, a bypass inlet valve 21 is arranged at the inlet of the bypass pipeline 18, the bypass pipeline 18 is communicated with the inlet and the outlet of the adsorption tower stripping pipeline, the outlet of the bypass pipeline 18 is arranged at the inlet of a turbine filter 19, the outlet of the turbine filter 19 is connected to the nitrogen circulation pipeline 7, and an adsorption tower outlet valve 22 is arranged at the outlet of the turbine filter.
The utility model provides a new pipeline for the extract liquid and the raffinate at the top of an adsorption tower, and a new pipeline for the extract liquid and the raffinate at the bottom of the adsorption tower, which is connected with a hot nitrogen system, and uses hot nitrogen to strip steam for the adsorption tower. When the adsorption tower is subjected to steam stripping operation at the beginning, in order to avoid influencing the adsorption tower, a bypass pipeline 18 is arranged on a steam stripping pipeline 17 of the adsorption tower in parallel, two bypass inlet valves 21 are added, the adsorption tower steam stripping firstly walks through the bypass pipeline 18 of the adsorption tower, nitrogen circulation is carried out through the bypass pipeline 18, the temperature is increased to 190 ℃, then a steam stripping inlet valve 20 entering the adsorption tower is slowly opened while the bypass pipeline 18 is kept fully opened, so that the condition that a compressor is not blocked is ensured, an outlet valve 22 of the adsorption tower is opened, the temperature of the adsorption tower is slowly increased, and the temperature rising speed is 10 ℃/h. The stripping line 17 of the adsorption tower is fully opened, and after the adsorption tower can be normally put into operation, the two bypass inlet valves 21 are closed.
The above list is only the preferred embodiment of the present invention. It is obvious that the utility model is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.
Claims (9)
1. An adsorption tower stripping system is characterized in that: the device comprises an adsorption tower stripping pipeline, wherein an inlet and an outlet of the adsorption tower stripping pipeline are respectively connected with a nitrogen circulating pipeline, the adsorption tower stripping pipeline and the nitrogen circulating pipeline form a loop, and the nitrogen circulating pipeline is connected with a nitrogen inlet pipeline; the outlet of the stripping pipeline of the adsorption tower is sequentially connected with an air cooler, a high molecular tank, a compressor and a heating furnace through a nitrogen circulating pipeline, the outlet pipe section of the heating furnace is connected to the inlet of the stripping pipeline of the adsorption tower, and the outlet pipe section of the heating furnace is connected with a water-cooling heat exchanger through a branch.
2. The adsorption column stripping system of claim 1, wherein: the heating furnace is characterized in that a heat exchange valve is arranged on the outlet pipe section of the heating furnace, two ends of the heat exchange valve are connected with the water-cooled heat exchanger through a heat exchanger inlet pipeline and a heat exchanger outlet pipeline, a heat exchanger inlet valve is arranged on the heat exchanger inlet pipeline, and a heat exchanger outlet valve is arranged on the heat exchanger outlet pipeline.
3. The adsorption column stripping system of claim 2, wherein: the water-cooling heat exchanger is connected with a circulating water inlet pipeline and a circulating water outlet pipeline, the circulating water inlet pipeline is connected to a fire-fighting water pipe, and the circulating water outlet pipeline is connected to a rain drain.
4. The adsorption column stripping system of claim 1, wherein: the nitrogen inlet line is disposed on the compressor inlet pipe section.
5. The adsorption column stripping system of claim 1, wherein: the nitrogen inlet pipeline is connected with a nitrogen pipe network.
6. The adsorption column stripping system of claim 1, wherein: and a pressure valve is arranged on the outlet pipe section of the compressor.
7. The adsorption column stripping system of claim 1, wherein: the adsorption tower stripping pipeline is communicated with the inlet of the adsorption tower and each bed layer branch pipeline, a turbine filter is arranged at the outlet of the adsorption tower stripping pipeline, the outlet of the turbine filter is connected to the nitrogen circulation pipeline, and the outlet of the turbine filter is provided with an adsorption tower outlet valve.
8. The adsorption column stripping system of claim 1, wherein: the adsorption towers are connected in parallel, and each adsorption tower is provided with an adsorption tower stripping pipeline.
9. The adsorption column stripping system according to claim 1 or 8, wherein: the adsorption tower stripping pipeline is provided with a bypass pipeline in parallel, and the bypass pipeline is communicated with an inlet and an outlet of the adsorption tower stripping pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123306254.0U CN216755434U (en) | 2021-12-27 | 2021-12-27 | Adsorption tower steam stripping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123306254.0U CN216755434U (en) | 2021-12-27 | 2021-12-27 | Adsorption tower steam stripping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216755434U true CN216755434U (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123306254.0U Active CN216755434U (en) | 2021-12-27 | 2021-12-27 | Adsorption tower steam stripping system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216755434U (en) |
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2021
- 2021-12-27 CN CN202123306254.0U patent/CN216755434U/en active Active
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