Circulating water device for reducing low-temperature water load of coking primary cooler

Abstract

The utility model belongs to the technical field of coking primary coolers, and particularly relates to a circulating water device for reducing low-temperature water load of coking primary coolers, which comprises a plurality of primary coolers, each primary cooler is provided with a waste heat water outlet, a circulating water outlet, a first water inlet and a second water inlet, and each waste heat water outlet is connected with a waste heat water supply pipe. Each circulating water outlet is connected with a cooling tower water inlet main pipe; a waste heat water supply pipe is connected with the cooling tower water inlet main pipe through a communicating pipe I; a cooling tower water outlet main pipe is connected with a circulating water well and a circulating water pump, a waste heat water supply pipe is connected with at least one cooling tower single body in the cooling tower through a first waste heat branch pipe, the cooling tower single body is connected with a water return tank through a second waste heat branch pipe, the water return tank is connected with a water return pump, and the water return pump is connected with a water return pipe. A first water inlet of the primary cooler is connected with the water return pipe, and a second water inlet of the primary cooler is connected with a circulating water pump water outlet pipe which is connected with the water return pipe through a second communicating pipe. The device ensures that the temperature of the circulating well is lower than 32 DEG C.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of coking primary cooler, and particularly relates to a circulating water device for reducing the low-temperature water load of a coking primary cooler. BACKGROUND

[0002] The outlet temperature of the existing coking primary cooling system of a coking plant is as high as 36 DEG C in summer, and the heat of the high-temperature gas passing through the primary cooler cannot be taken away by the circulating water, so that the excess heat enters the low-temperature water section of the primary cooler, causing the temperature of the low-temperature water to rapidly increase, resulting in a great increase in the load of the refrigerating machine, which needs to consume more steam to complete the work, and the steam consumption of the refrigerating machine sharply increases. SUMMARY

[0003] The utility model wants to solve the technical problem of providing a circulating water device for reducing the low-temperature water load of a coking primary cooler, which is suitable for different environmental temperatures and ensures the temperature of the circulating water well.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A circulating water device for reducing the low-temperature water load of a coking primary cooler, comprising a plurality of primary coolers, a cooling tower, a circulating water well, a circulating water pump, a backwater tank, a backwater pump, a waste heat water supply pipe and a backwater pipe.

[0006] The cooling tower comprises a plurality of parallel cooling tower units, the cooling tower inlet water main is connected with the cooling tower units through inlet water branch pipes, the cooling tower units are connected with the cooling tower outlet water main through outlet water branch pipes, the cooling tower outlet water main is connected with the circulating water well, the circulating water well is connected with the circulating water pump, and the circulating water pump is provided with a circulating water pump outlet water pipe.

[0007] The upper section of the primary cooler is provided with a waste heat water outlet, the lower section of the primary cooler is provided with a circulating water outlet, the upper section and the lower section of the primary cooler are respectively provided with water inlet one and water inlet two, each waste heat water outlet is connected with the waste heat water supply pipe, each circulating water outlet is connected with the cooling tower inlet water main, and the waste heat water supply pipe is connected with the cooling tower inlet water main through a communication pipe one.

[0008] The waste heat water supply pipe is connected with at least one of the cooling tower units in the cooling tower through a waste heat branch pipe one, the cooling tower unit is connected with the backwater tank through a waste heat branch pipe two, the backwater tank is connected with the backwater pump, and the backwater pump is connected with the backwater pipe.

[0009] The water inlet one of the primary cooler is connected with the backwater pipe, the water inlet two of the primary cooler is connected with the circulating water pump outlet water pipe, and the circulating water pump outlet water pipe is connected with the backwater pipe through a communication pipe two.

[0010] Valves are provided on the waste heat branch pipe 1, the inlet branch pipe connected to waste heat branch pipe 1, the waste heat branch pipe 2, the outlet branch pipe connected to waste heat branch pipe 2, the outlet pipe of the circulating water pump, the connecting pipe 1, the connecting pipe 2 and the return water pipe.

[0011] Compared with existing technologies, the beneficial effects of this utility model are:

[0012] This invention offers multiple operating modes to adapt to different working environments, ensuring the circulating water well temperature remains below 32℃. It reduces the low-temperature water load on the primary cooler, decreases steam consumption, and reduces circulating water makeup. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0014] Fig. 2 This is a schematic diagram of the primary cooler.

[0015] In the diagram: 1. Primary cooler; 2. Cooling tower; 3. Circulating water well; 4. Circulating water pump; 5. Return water tank; 6. Return water pump; 7. Waste water supply pipe; 8. Return water pipe; 9. Cooling tower inlet main pipe; 10. Inlet branch pipe; 11. Outlet branch pipe; 12. Cooling tower outlet main pipe; 13. Circulating water pump outlet pipe; 14. Connecting pipe one; 15. Waste heat branch pipe one; 16. Waste heat branch pipe two; 17. Connecting pipe two. Detailed Implementation

[0016] In the description of this utility model, it should be understood that the terms "first," "second," etc., 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. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] like Figs. 1-2 A circulating water device for reducing the low-temperature water load of a coking primary cooler includes multiple primary coolers 1, a cooling tower 2, a circulating water well 3, a circulating water pump 4, a return water tank 5, a return water pump 6, a waste hot water supply pipe 7, and a return water pipe 8.

[0019] Cooling tower 2 includes multiple parallel cooling tower units. The cooling tower inlet main pipe 9 is connected to the cooling tower unit through inlet branch pipes 10. The cooling tower unit is connected to the cooling tower outlet main pipe 12 through outlet branch pipes 11. The cooling tower outlet main pipe 12 is connected to the circulating water well 3. The circulating water well 3 is connected to the circulating water pump 4. The circulating water pump 4 is equipped with a circulating water pump outlet pipe 13.

[0020] The upper section of the primary cooler 1 is provided with a waste hot water outlet c, the lower section of the primary cooler 1 is provided with a circulating water outlet d, the upper and lower sections of the primary cooler 1 are respectively provided with a water inlet a and a water inlet b, each waste hot water outlet c is connected to a waste hot water supply pipe 7, each circulating water outlet d is connected to a cooling tower inlet main pipe 9, and the waste hot water supply pipe 7 is connected to the cooling tower inlet main pipe 9 through a connecting pipe 14.

[0021] The waste hot water supply pipe 7 is connected to at least one cooling tower unit in the cooling tower 2 through the waste heat branch pipe 15. The cooling tower unit is connected to the return water tank 5 through the waste heat branch pipe 2 16. The return water tank 5 is connected to the return water pump 6. The return water pump 6 is connected to the return water pipe 8.

[0022] The inlet a of the primary cooler 1 is connected to the return water pipe 8, and the inlet b of the primary cooler 1 is connected to the outlet pipe 13 of the circulating water pump. The outlet pipe 13 of the circulating water pump is connected to the return water pipe 8 through the connecting pipe 17.

[0023] Valves are provided on the waste heat branch pipe 15, the inlet branch pipe 10 connected to the waste heat branch pipe 15, the waste heat branch pipe 16, the outlet branch pipe 11 connected to the waste heat branch pipe 16, the circulating water pump outlet pipe 13, the connecting pipe 14, the connecting pipe 2 17 and the return water pipe 8.

[0024] Work process:

[0025] 1) 25℃ < ambient temperature ≤ 32℃, adopt the mixing and cooling operation mode. The waste hot water of the primary cooler 1 is mixed with the circulating water and then enters the cooling tower 2 for cooling. After cooling, they enter the circulating water well 3 together. The water outlet of the circulating water well 3 returns to the primary cooler 1 through inlet a and inlet b. The valves on the operating pipeline are open, and the valves on the non-operating pipeline are closed.

[0026] 2) When the ambient temperature is ≤25℃, the cooling-then-mixing operation mode is adopted. The waste hot water and circulating water of the primary cooler 1 enter the cooling tower 2 separately for cooling and then enter the circulating water well 3 together. The water outlet of the circulating water well 3 returns to the primary cooler 1 through inlet a and inlet b. The valves on the operating pipeline are open, and the valves on the non-operating pipeline are closed.

[0027] 3) When the ambient temperature is >32℃, the system operates in an independent circulation mode: the waste hot water and circulating water from the primary cooler 1 enter the cooling tower 2 for cooling separately. The cooled waste hot water returns to the return water tank 5, and the outlet water from the return water tank 5 returns to the primary cooler 1 through inlet a. The cooled circulating water enters the circulating water well 3, and the outlet water from the circulating water well 3 returns to the primary cooler 1 through inlet b. Valves on the operating pipelines are open, and valves on the non-operating pipelines are closed.

[0028] To make the objectives, technical solutions, and technical effects of this utility model clearer, the technical solutions in the embodiments of this utility model are now described clearly and completely. However, the embodiments described below are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Example

[0030] A circulating water device for reducing the low-temperature water load of a coking primary cooler includes five primary coolers 1, a cooling tower 2, a circulating water well 3, a circulating water pump 4, a return water tank 5, a return water pump 6, a waste hot water supply pipe 7, and a return water pipe 8.

[0031] Cooling tower 2 includes 5 parallel cooling tower units. The cooling tower inlet main pipe 9 is connected to the cooling tower unit through inlet branch pipes 10. The cooling tower unit is connected to the cooling tower outlet main pipe 12 through outlet branch pipes 11. The cooling tower outlet main pipe 12 is connected to the circulating water well 3. The circulating water well 3 is connected to the circulating water pump 4. The circulating water pump 4 is equipped with a circulating water pump outlet pipe 13.

[0032] The upper section of the primary cooler 1 is provided with a waste hot water outlet c, the lower section of the primary cooler 1 is provided with a circulating water outlet d, the upper and lower sections of the primary cooler 1 are respectively provided with a water inlet a and a water inlet b, each waste hot water outlet c is connected to a waste hot water supply pipe 7, each circulating water outlet d is connected to a cooling tower inlet main pipe 9, and the waste hot water supply pipe 7 is connected to the cooling tower inlet main pipe 9 through a connecting pipe 14.

[0033] The waste hot water supply pipe 7 is connected to at least one cooling tower unit in the cooling tower 2 through the waste heat branch pipe 15. The cooling tower unit is connected to the return water tank 5 through the waste heat branch pipe 2 16. The return water tank 5 is connected to the return water pump 6. The return water pump 6 is connected to the return water pipe 8.

[0034] The inlet a of the primary cooler 1 is connected to the return water pipe 8, and the inlet b of the primary cooler 1 is connected to the outlet pipe 13 of the circulating water pump. The outlet pipe 13 of the circulating water pump is connected to the return water pipe 8 through the connecting pipe 17.

[0035] Valves are provided on waste heat branch pipe 15, inlet branch pipe 10 connected to waste heat branch pipe 15, waste heat branch pipe 2 16 connected to waste heat branch pipe 2 16, outlet branch pipe 11 connected to waste heat branch pipe 2 16, circulating water pump outlet pipe 13, connecting pipe 1 14, connecting pipe 2 17 and return water pipe 8.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and basic spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating water device for reducing the low-temperature water load of a coking primary cooler, characterized in that, It includes multiple primary coolers, cooling towers, circulating water wells, circulating water pumps, return water tanks, return water pumps, waste hot water supply pipes, and return water pipes; The cooling tower consists of multiple parallel cooling tower units. The main inlet pipe of the cooling tower is connected to the individual cooling tower units through inlet branch pipes. The individual cooling tower units are connected to the main outlet pipe of the cooling tower through outlet branch pipes. The main outlet pipe of the cooling tower is connected to the circulating water well. The circulating water well is connected to the circulating water pump. The circulating water pump is equipped with a circulating water pump outlet pipe. The upper section of the primary cooler is equipped with a waste hot water outlet, the lower section of the primary cooler is equipped with a circulating water outlet, the upper and lower sections of the primary cooler are respectively equipped with inlet one and inlet two, each waste hot water outlet is connected to the waste hot water supply pipe, each circulating water outlet is connected to the cooling tower inlet main pipe, and the waste hot water supply pipe is connected to the cooling tower inlet main pipe through connecting pipe one. The waste hot water supply pipe is connected to at least one cooling tower unit in the cooling tower through waste heat branch pipe one. The cooling tower unit is connected to the return water tank through waste heat branch pipe two. The return water tank is connected to the return water pump. The return water pump is connected to the return water pipe. The primary cooler's inlet 1 is connected to the return water pipe, the primary cooler's inlet 2 is connected to the circulating water pump's outlet pipe, and the circulating water pump's outlet pipe is connected to the return water pipe through connecting pipe 2.

2. The circulating water device for reducing the low-temperature water load of the coking primary cooler according to claim 1, characterized in that, Valves are provided on the waste heat branch pipe 1, the inlet branch pipe connected to waste heat branch pipe 1, the waste heat branch pipe 2, the outlet branch pipe connected to waste heat branch pipe 2, the outlet pipe of the circulating water pump, the connecting pipe 1, the connecting pipe 2 and the return water pipe.

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