CN211315805U - Petrochemical tank district condensate water collecting system - Google Patents

Abstract

A petrochemical tank region condensed water collecting system comprises a condensed water collecting tank, wherein a steam condenser is arranged at the top of one end of the collecting tank; the collecting tank is provided with a local pressure gauge and a remote pressure gauge for detecting the pressure in the tank, a local thermometer for testing the temperature in the tank, and a liquid level alarm for detecting the height of the liquid level in the tank and giving an alarm when the liquid level reaches the preset highest liquid level and the preset lowest liquid level; the top of the other end of the collecting tank is communicated with a collecting main pipe provided with a valve, and the water inlet end of the valve is communicated with a plurality of collecting branch pipes for collecting the condensed water in the storage and transportation tank area; the bottom of the collecting tank is communicated with a transfer pump of a condensed water pipe network which transfers the condensed water in the tank to a factory area when the liquid level in the collecting tank reaches the preset highest liquid level through a pipeline. The system has wide applicability, simple design and good economical efficiency, can effectively prevent the condensate pipeline from generating water attack in the tank area, and realizes the collection of the condensate water in the petrochemical storage and transportation tank area.

Description

A petrochemical tank farm condensate collection system

technical field

The utility model belongs to the field of petrochemical oil storage and transportation, in particular to a condensed water collection system in a petrochemical tank farm.

Background technique

The condensed water in the petrochemical storage and transportation tank area is mainly the drainage of the steam pipeline in the storage and transportation tank area. The places where the steam pipeline is set to drain are mainly the low point of the steam pipeline, the end of the steam pipeline, the drain after the steam heats the storage tank, and the centralized drain after the steam trace of the oil pipeline. After the above condensate is drained by the trap, during the flow process, secondary steam is generated due to the pressure drop, and it is easy to form a vapor-liquid mixed phase flow. In order to prevent the condensate pipeline from producing water hammer in the tank area, a condensate collection system is set up in the tank area to change the vapor-liquid mixed-phase flow in the pipeline into a liquid-phase single-phase flow. At present, there is no effective condensate collection system for petrochemical storage and transportation tank farms in China, so it is urgent to design a new type of condensed water collection system for petrochemical storage and transportation tank farms.

SUMMARY OF THE INVENTION

In order to overcome the existing deficiencies, the purpose of the present utility model is to propose a system that can prevent the condensed water pipeline from generating water hammer in the tank area and effectively realize the collection of condensed water in the petrochemical tank area.

The purpose of this utility model is to adopt the following technical solutions to achieve. A condensed water collection system in a petrochemical tank area proposed according to the present invention includes a collection tank 5 for condensed water, and the top of one end of the collection tank 5 is provided with a device for liquefying the steam entering from the collection tank 5 and then falls back into the collection tank 5. The steam condenser 10 inside; the collection tank 5 is provided with an on-site pressure gauge 7 and a remote pressure gauge 6 for detecting the pressure in the tank, an on-site thermometer 9 for testing the temperature in the tank, and the liquid level in the tank is detected. The liquid level alarm 8 that gives an alarm when the level reaches the preset maximum and minimum liquid levels; the top of the other end of the collection tank 5 is communicated with the collection header 4 provided with the valve 3 above, and the water inlet end of the valve 3 is connected to the storage and transportation tank. The multiple collection branch pipes 1 for collecting the condensed water in the area are connected to each other; the bottom of the collecting tank 5 is connected to the condensed water pipe network in the factory area when the liquid level in the collecting tank 5 reaches the preset maximum liquid level through the pipeline. The transfer pump 11 is connected.

Further, the end of the steam condenser 10 close to the collection tank 5 is provided with a circulating water supply pipe 12 for conveying circulating water to the inside thereof, and the end of the steam condenser 10 away from the condensed water collection tank 5 is provided with water circulation in the steam condenser 10. The circulating water return pipe 13.

Further, an inlet and outlet bypass 14 is provided between the circulating water supply pipe 12 and the circulating water return pipe 13 .

Further, each collection branch pipe 1 is provided with a check valve 2 for preventing the condensed water in the high-pressure collection branch pipe 1 from flowing into the low-pressure collection branch pipe 1 .

With the above technical solutions, the utility model has the advantages that the system has wide applicability, simple design and good economy, can effectively prevent water hammer in the condensed water pipeline in the tank area, and realize the collection of condensed water in the petrochemical storage and transportation tank area.

The above description is only an overview of the technical solutions of the present utility model, in order to understand the technical means of the present utility model more clearly, it can be implemented according to the contents of the specification, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better. It is obvious and easy to understand, and the preferred embodiments are exemplified below, and the detailed description is as follows in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic structural diagram of a condensed water collection system in a petrochemical tank farm in this embodiment.

[reference number]

1-collection branch pipe, 2-check valve, 3-valve, 4-collection header, 5-collection tank, 6-remote pressure gauge, 7-local pressure gauge, 8-liquid level alarm, 9-local Thermometer, 10-steam condenser, 11-transfer pump, 12-circulating water supply pipe, 13-circulating water return pipe, 14-inlet and outlet bypass.

Detailed ways

In order to further illustrate the technical means and effects adopted by the present utility model to achieve the intended purpose of the utility model, the following describes the specific implementation of a petrochemical tank farm condensed water collection system proposed according to the present utility model in conjunction with the accompanying drawings and preferred embodiments. The method, structure, characteristics and efficacy thereof are described in detail as follows.

In the description of the present invention, it should be understood that the terms, "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" ", "bottom", "inside", "outside" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying The device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Please refer to FIG. 1 , a condensed water collection system in a petrochemical tank farm includes a collection tank 5 for condensed water, and a steam condenser 10 is arranged on the top of one end of the collection tank 5 to liquefy the steam entering from the collection tank 5, liquefaction Then it falls back into the collection tank 5; the tank body of the collection tank 5 is provided with a remote pressure gauge 6, a local pressure gauge 7, a local thermometer 9, a liquid level alarm 8, a remote pressure gauge 6 and a local pressure gauge 7. Realize the constant detection of the pressure in the collection tank 5 to prevent accidents from being too high or too low in the tank. The on-site thermometer 9 measures the temperature of the tank, and the liquid level alarm 8 collects the condensed water in the tank 5. An alarm will sound when the liquid level reaches a preset maximum or minimum level.

The top of the other end of the collecting tank 5 is provided with a collecting main pipe 4, and a valve 3 is arranged on the collecting main pipe 4, which can control the opening and closing state of the collecting main pipe 4. The water inlet end of the valve 3 is provided with a plurality of collecting branch pipes 1 for condensed water and each Each collection branch pipe 1 is provided with a check valve 2, because the pressure in each collection branch pipe 1 is different, the check valve 2 can prevent the condensed water in the high-pressure collection branch pipe 1 from flowing into the low-pressure collection branch pipe 1, storage and transportation The condensed water in the tank farm enters the collecting main pipe 4 through each collecting branch pipe 1 , and then flows into the collecting tank 5 .

The bottom of the collection tank 5 is connected to the transfer pump 11 through a pipeline, and the transfer pump 11 can transport the condensed water in the collection tank 5 to the condensate water pipe network in the factory area. There is a remote pressure gauge 6 to detect the pressure at the outlet of the transfer pump 11. The pressure at the outlet of the transfer pump 11 is higher than the pressure of the condensate water pipe network in the plant area, which ensures that the recovered condensate water enters the condensate water pipe network in the plant area and will not Backflow occurs.

One end of the steam condenser 10 close to the collection tank 5 is provided with a circulating water supply pipe 12, and the circulating water cooled from the outside is transported into the steam condenser 10 to reduce the temperature in the steam condenser 10, so as to realize the steam in the steam condenser 10. liquefaction; the circulating water in the steam condenser 10 is discharged through the circulating water return pipe 13 provided at one end of the steam condenser 10 away from the collection tank 5 to realize the water circulation inside the steam condenser 10, thereby ensuring that the inside of the steam condenser 10 is always in A low temperature state capable of liquefying steam. Both the circulating water supply pipe 12 and the circulating water return pipe 13 are provided with an on-site thermometer 9 and an on-site pressure gauge 7 to realize the constant detection of the temperature and pressure in the pipe; between the circulating water supply pipe 12 and the circulating water return pipe 13 are also provided There is an inlet and outlet bypass 14, the circulating water supply pipe 12, the circulating water return pipe 13 and the inlet and outlet bypass 14 are all provided with valves 3, which can control the opening and closing states of the respective pipes. When the temperature is too low in winter, open the valve 3 on the inlet and outlet bypass 14 so that the circulating water supply pipe 12 and the circulating water return pipe 13 can communicate through the inlet and outlet bypass 14, which can effectively prevent the circulating water pipeline from freezing.

The working principle of this embodiment is as follows:

Open the valve 3 on the collection main pipe 4, the condensed water in the petrochemical storage tank area enters the collection branch pipe 1 and enters the collection main pipe 4 through the check valve 2, and then enters the collection tank 5. The condensed water is generated during the flow. The steam enters the steam condenser 10; open the two valves 3 above the circulating water supply pipe 12 and the circulating water return pipe 13, the water circulation is realized in the steam condenser 10, the steam entering the steam condenser 10 is liquefied, and the condensation formed by the liquefaction The water falls into the collection tank 5 again; the condensed water in the collection tank 5 is more and more, when the liquid level of the condensed water reaches the preset maximum liquid level in the collection tank 5, the liquid level alarm 8 sends out an alarm, and at this time, it is manually turned on Transfer pump 11, the condensed water in the collection tank 5 is pumped out through the transfer pump 11 and transported to the condensed water pipe network in the factory area, the condensed water level in the collection tank 5 gradually decreases, reaching the preset minimum liquid level of the collection tank 5 When the liquid level alarm 8 gives an alarm, the transfer pump 11 is manually turned off to stop the conveying of the condensed water in the collection tank 5 . When the liquid level in the collecting tank 5 reaches the preset maximum liquid level again, the above actions are repeated.

The above are only the preferred embodiments of the present invention, and any technical personnel familiar with the present profession, without departing from the scope of the technical solutions of the present invention, can make any modifications to the above embodiments according to the technical essence of the present invention. Simple modifications, equivalent changes and modifications still fall within the scope of the technical solutions of the present invention.

Claims (4)

1. The utility model provides a petrochemical industry tank field condensate water collecting system which characterized in that: the device comprises a collecting tank (5) for condensed water, wherein a steam condenser (10) which is used for leading steam entering from the collecting tank (5) to be liquefied and then to fall into the collecting tank (5) again is arranged at the top of one end of the collecting tank (5); the collecting tank (5) is provided with a local pressure gauge (7) and a remote transmission pressure gauge (6) for detecting the pressure in the tank, a local thermometer (9) for testing the temperature in the tank, and a liquid level alarm (8) for detecting the liquid level in the tank and giving an alarm when the liquid level reaches the preset highest liquid level and the preset lowest liquid level; the top of the other end of the collecting tank (5) is communicated with a collecting main pipe (4) on which a valve (3) is arranged, and the water inlet end of the valve (3) is communicated with a plurality of collecting branch pipes (1) for collecting condensed water in the storage and transportation tank area; the bottom of the collecting tank (5) is communicated with a transfer pump (11) of a condensed water pipe network which transfers the condensed water in the tank to a factory when the liquid level in the collecting tank (5) reaches the preset highest liquid level through a pipeline.

2. The condensate collecting system for the petrochemical tank field according to claim 1, wherein a circulating water feed pipe (12) for feeding circulating water to the interior of the collecting tank (5) is provided at one end of the steam condenser (10) close to the collecting tank, and a circulating water return pipe (13) for realizing water circulation in the steam condenser (10) is provided at one end of the steam condenser (10) far from the condensate collecting tank (5).

3. The condensate collecting system for the petrochemical tank field according to claim 2, wherein an inlet and outlet bypass (14) is provided between the circulating water supply pipe (12) and the circulating water return pipe (13).

4. The condensate collection system for a petrochemical tank site according to claim 1, wherein each of the collection branch pipes (1) is provided with a check valve (2) for preventing the condensate in the high pressure collection branch pipe (1) from flowing into the low pressure collection branch pipe (1).

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