Circulating water system of adsorption device

Abstract

The utility model relates to the technical field of chemical engineering, in particular to an adsorption device circulating water system which comprises a circulating water pool, a circulating water pipeline, a circulating water pool outlet line, a water suction pool, a first branch line, a second branch line and a water suction pool outlet line, the circulating water pipeline is from a xylene rectification separation system and is connected to an inlet of the circulating water tank; a first filter and a first circulating water pump are sequentially arranged on the circulating water tank outlet line; one end of the first branch line is connected to the pool outlet line, and the other end of the first branch line is connected to an inlet I of the water suction pool through a water collecting pool. The problems of insufficient return water pressure, reduced tail end pressure, unsmooth circulating water and the like of a xylene rectification separation system are solved, the tail end pressure of the circulating water is improved, the quality of the circulating water is improved, and the temperature of a circulating water system in summer is reduced.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, specifically to a circulating water system for an adsorption device. Background Technology

[0002] The production process of the two adsorption units in the aromatics plant suffers from insufficient return water pressure and poor water quality at the end of the process due to the following reasons: Pipeline resistance issues: After more than ten years of operation, the inner walls of the pipes have accumulated scale and corrosion, reducing the pipe diameter and increasing water flow resistance, leading to a drop in end-point pressure; System leakage issues: Leaks in the underground pipeline system may cause water loss, further reducing end-point pressure; Microbial growth issues: The suitable temperature and rich nutrients in the circulating water make it easy for bacteria, algae, and other microorganisms to grow, forming slime that affects water quality; External contaminant ingress issues: Rainwater runoff can bring dust, silt, and other impurities into the circulating water system, impacting water quality. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides an adsorption device circulating water system, which solves the problems of insufficient return water pressure, reduced terminal pressure, and poor circulation of xylene distillation separation system. It improves the terminal pressure of circulating water, improves the quality of circulating water, reduces the temperature of circulating water system in summer, and improves the cooling effect of pumps.

[0004] To achieve the above objectives, the present invention provides a circulating water system for an adsorption device, comprising a circulating water tank, a circulating water pipeline, a circulating water tank outlet line, a suction tank, a first branch line, a second branch line, and a suction tank outlet line; the circulating water pipeline originates from a xylene distillation separation system and is connected to the inlet of the circulating water tank; the circulating water tank outlet line is sequentially equipped with a first filter and a first circulating water pump; one end of the first branch line is connected to the water tank outlet line, and the other end is connected to the inlet one of the suction tanks via a collection tank; one end of the second branch line is connected to the water tank outlet line, and the other end is connected to the inlet two of the suction tanks via a side filter tank; one end of the suction tank outlet line is connected to the outlet one of multiple suction tanks, and the other end is supplied with circulating water via a third circulating water pump.

[0005] Furthermore, a first bypass pipeline is provided on the outlet line of the circulating water tank, and a second filter and a second circulating water pump are sequentially installed on the first bypass pipeline. The first filter and the second filter are connected in parallel, and the first circulating water pump and the second circulating water pump are connected in parallel.

[0006] Furthermore, it also includes a second bypass pipeline and a fourth circulating water pump. One end of the second bypass pipeline is connected to the outlet of the water intake pool, and the other end is connected to the outlet line of the water intake pool through the fourth circulating water pump. The third circulating water pump and the fourth circulating water pump are connected in parallel.

[0007] Furthermore, it also includes a third bypass pipeline and a fifth circulating water pump. One end of the third bypass pipeline is connected to the outlet three of the water intake pool, and the other end is connected to the outlet line of the water intake pool through the fifth circulating water pump. The fourth circulating water pump and the fifth circulating water pump are arranged in parallel.

[0008] Furthermore, the third, fourth, and fifth circulating water pumps are connected in parallel.

[0009] Furthermore, an outlet branch line is provided on the outlet line of the water suction tank, and the outlet branch line is introduced into the PX device. The outlet branch line is located downstream of the joint between the outlet line of the water suction tank and the second bypass pipeline.

[0010] Furthermore, it also includes an inlet pipe that brings in fresh water into the water intake tank.

[0011] The beneficial effects of this utility model are: it solves the problems of insufficient return water pressure, reduced terminal pressure, and poor circulation of xylene distillation and separation system. It improves the terminal pressure of circulating water by using the first and second circulating water pumps. The addition of chemicals to the circulating water before it enters the suction tank enhances the water quality improvement effect before entering the next system. It also improves the cooling effect of the pump circulating water in summer. Attached Figure Description

[0012] Figure 1 This is a process flow diagram of the present invention;

[0013] In the diagram: 100, circulating water tank.

[0014] 200. Circulating water pipeline,

[0015] 300. Circulating water tank outlet line; 310. First filter; 320. First circulating water pump; 330. First bypass line; 331. Second filter; 332. Second circulating water pump.

[0016] 400, First branch line; 410, Water collection tank;

[0017] 500, Second branch line; 510, Side filter tank;

[0018] 600. Water suction pool

[0019] 700. Suction tank outlet line; 710. Third circulating water pump; 720. Second bypass line; 721. Fourth circulating water pump; 730. Third bypass line; 731. Fifth circulating water pump; 740. Outlet branch line.

[0020] 800. Water inlet pipeline

[0021] 900. Water pump for xylene distillation and separation system. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] like Figure 1 As shown, an embodiment of the adsorption device circulating water system of this utility model includes a circulating water tank 100, a circulating water pipeline 200, a circulating water tank outlet line 300, a suction tank 600, a first branch line 400, a second branch line 500, and a suction tank outlet line 700. The circulating water pipeline 200 comes from the xylene distillation separation system and is connected to the inlet of the circulating water tank 100. The circulating water tank outlet line 300 is equipped with a first filter 310 and a first circulating water pump 320 in sequence. One end of the first branch line 400 is connected to the water tank outlet line, and the other end is connected to the inlet of the suction tank 600 through the collection tank 410. One end of the second branch line 500 is connected to the water tank outlet line, and the other end is connected to the inlet of the suction tank 600 through the side filter tank 510. One end of the suction tank outlet line 700 is connected to the outlet of the suction tank 600, and the other end is supplied with circulating water through the third circulating water pump 710.

[0024] It should be noted that the circulating water pipeline 200 connects all the bottom pumps and top pumps in the xylene distillation separation system, and they share a single circulating water pipeline 200.

[0025] In one embodiment, a first bypass pipeline 330 is provided on the outlet line 300 of the circulating water tank, and a second filter 331 and a second circulating water pump 332 are sequentially provided on the first bypass pipeline 330. The first filter 310 and the second filter 331 are connected in parallel, and the first circulating water pump 320 and the second circulating water pump 332 are connected in parallel.

[0026] In one embodiment, the system also includes a second bypass line 720 and a fourth circulating water pump 721. One end of the second bypass line 720 is connected to the second outlet of the water intake tank 600, and the other end is connected to the outlet line 700 of the water intake tank through the fourth circulating water pump 721. The third circulating water pump 710 and the fourth circulating water pump 721 are connected in parallel.

[0027] In one embodiment, the system also includes a third bypass line 730 and a fifth circulating water pump 731. One end of the third bypass line 730 is connected to the outlet three of the water intake tank 600, and the other end is connected to the outlet line 700 of the water intake tank through the fifth circulating water pump 731. The fourth circulating water pump 721 and the fifth circulating water pump 731 are connected in parallel.

[0028] In one embodiment, the third circulating water pump 710, the fourth circulating water pump 721 and the fifth circulating water pump 731 are arranged in parallel.

[0029] In one embodiment, an outlet branch line 740 is provided on the water intake outlet line 700, the outlet branch line 740 is introduced into the PX device, and the outlet branch line 740 is located downstream of the joint between the water intake outlet line 700 and the second bypass line 720.

[0030] It should be noted that the PX unit is used to produce para-xylene (PX), an important aromatic hydrocarbon product widely used in the chemical industry. It uses naphtha and other raw materials as raw materials, undergoing complex chemical reactions and physical separation processes to ultimately produce high-purity para-xylene. Para-xylene is a major raw material for the production of materials such as polyester fibers, which are used to manufacture clothing, plastic bottles, and many other everyday consumer goods.

[0031] In one embodiment, an inlet water line 800 is also included, which introduces fresh water into the suction tank 600.

[0032] In the existing technology, the return water pressure of the xylene distillation separation system is insufficient and the terminal pressure is reduced, making it difficult to return to the circulating water pool. Therefore, the circulating water from the two sets of circulating water adsorption on the mountain is pumped into the circulating water pool through a circulating water storage tank, and the circulating water quality is improved by adding chemicals. Then, the circulating water is pumped back to the common circulating water pool through the first circulating water pump 320 and the second circulating water pump 332 connected to the first branch line 400 and the second branch line 500.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

Claims

1. A circulating water system for an adsorption device, characterized in that: include Circulating water tank; The circulating water pipeline originates from the xylene distillation and separation system and is connected to the inlet of the circulating water tank. A circulating water tank outlet line, wherein a first filter and a first circulating water pump are sequentially installed on the water tank outlet line; Water intake pool; The first branch line is connected at one end to the outlet line of the water tank and at the other end to the inlet of the water suction tank through the water collection tank; The second branch line is connected at one end to the outlet line of the water tank and at the other end to the inlet of the water intake tank through a side filter tank. The water intake pool outlet line is connected at one end to the outlet of most water intake pools, and at the other end, circulating water is introduced through the third circulating water pump.

2. The circulating water system for an adsorption device according to claim 1, characterized in that: A first bypass pipeline is installed on the outlet line of the circulating water tank. A second filter and a second circulating water pump are installed sequentially on the first bypass pipeline. The first filter and the second filter are connected in parallel, and the first circulating water pump and the second circulating water pump are connected in parallel.

3. The circulating water system of the adsorption device according to claim 1, characterized in that: It also includes a second bypass pipeline and a fourth circulating water pump. One end of the second bypass pipeline is connected to the outlet of the water intake pool, and the other end is connected to the outlet line of the water intake pool through the fourth circulating water pump. The third circulating water pump and the fourth circulating water pump are connected in parallel.

4. The circulating water system of the adsorption device according to claim 3, characterized in that: It also includes a third bypass pipeline and a fifth circulating water pump. One end of the third bypass pipeline is connected to the outlet three of the water intake pool, and the other end is connected to the outlet line of the water intake pool through the fifth circulating water pump. The fourth circulating water pump and the fifth circulating water pump are connected in parallel.

5. The circulating water system of the adsorption device according to claim 4, characterized in that: The third, fourth, and fifth circulating water pumps are connected in parallel.

6. The circulating water system of the adsorption device according to claim 3, characterized in that: An outlet branch line is provided on the outlet line of the water suction tank, and the outlet branch line is introduced into the PX device. The outlet branch line is located downstream of the joint between the outlet line of the water suction tank and the second bypass pipeline.

7. The circulating water system of the adsorption device according to claim 1, characterized in that: It also includes a water inlet pipeline that brings in fresh water into the water absorption tank.

Images