CN-224215655-U - Device for improving heat exchange effect of circulating water of crude styrene tower top cooler

Abstract

The utility model provides a device for improving the heat exchange effect of circulating water of a crude styrene tower top cooler, wherein a booster pump is additionally arranged at the inlet of a circulating water main pipe of the crude styrene tower top cooler, so that the scaling and deposition of a pipe layer of the crude styrene tower top cooler caused by lower pressure and lower flow flowing through the crude styrene tower top cooler can be avoided, and the heat exchange effect of the circulating water of the crude styrene tower top cooler is improved. By additionally arranging the booster pump, the circulating water pressure of the crude styrene tower top cooler flowing through the heat exchanger can be improved by 0.04MPa, the circulating water flow flowing through the crude styrene tower top cooler is increased by 1900kg/h, and the outlet temperature of the crude styrene tower top cooler meets the requirement.

Inventors

• ZHANG SHUAI
• LV GUANG
• JIN SHEN
• LIU FENG
• SONG HAN
• ZHANG FUSHENG
• Qi Xuanzhen
• LUO BIN
• TANG HONGWEI
• XU ZIHANG
• YU HANG
• CHEN HONGWANG

Assignees

• 北方华锦化学工业股份有限公司

Dates

Publication Date

20260508

Application Date

20250527

Claims (7)

1. 1. The device for improving the circulating water heat exchange effect of the crude styrene tower top cooler is characterized by comprising a pressurizing main pump, wherein an inlet of the pressurizing main pump is provided with a main pump inlet pipeline communicated with circulating water main pipe water, an outlet of the pressurizing main pump is provided with a main pump outlet pipeline, an outlet valve of the pressurizing main pump is arranged on the main pump outlet pipeline, the main pump outlet pipeline is communicated with an inlet of the refined styrene tower top cooler, an outlet of the refined styrene tower top cooler is communicated with an inlet of the crude styrene tower top cooler through a refined tower heat exchanger outlet pipeline, and an outlet of the crude styrene tower top cooler is communicated with circulating water main pipe backwater through a crude tower heat exchanger outlet pipeline.
2. 2. The device for improving the heat exchange effect of circulating water of a crude styrene tower top cooler according to claim 1, wherein an exhaust valve is arranged on an inlet pipeline of the main pump, and the valve is closed to be emptied when the pump is overhauled.
3. 3. The device for improving the heat exchange effect of circulating water of the crude styrene tower top cooler according to claim 1, wherein a reverse shower valve is arranged on an outlet pipeline of the main pump and is used for emptying and reverse shower, and the device is used for overhauling and emptying the pump.
4. 4. The apparatus for improving the heat exchange effect of circulating water in a crude styrene tower top cooler according to claim 1, wherein the outlet pipeline of the main pump is provided with an outlet flow meter at the inlet close to the refined styrene tower top cooler.
5. 5. The device for improving the circulating water heat exchange effect of the crude styrene tower top cooler according to claim 1, wherein the device comprises a booster backup pump which is arranged in parallel with a booster main pump, an inlet of the booster backup pump is provided with a backup pump inlet pipeline which is communicated with the circulating water main pipe, an outlet of the booster backup pump is provided with a backup pump outlet pipeline, an outlet valve of the booster backup pump is arranged on the backup pump outlet pipeline, and the backup pump outlet pipeline and the main pump outlet pipeline are communicated with the inlet of the refined styrene tower top cooler together.
6. 6. The device for improving the heat exchange effect of the circulating water of the crude styrene tower top cooler according to claim 5, wherein an exhaust valve is arranged on the inlet pipeline of the standby pump, and the valve is closed to be emptied when the pump is overhauled.
7. 7. The device for improving the heat exchange effect of the circulating water of the crude styrene tower top cooler according to claim 5, wherein the pump-preparing outlet pipeline is provided with a reverse shower valve for emptying and shower, and the device is used when the pump is overhauled and emptied.

Description

Device for improving heat exchange effect of circulating water of crude styrene tower top cooler Technical Field The utility model belongs to the technical field of styrene production, and particularly relates to a device for improving the heat exchange effect of circulating water of a crude styrene tower top cooler. Background The crude styrene column is cooled by an overhead cooler (E-402) to partially or fully condense the overhead material into a liquid. On one hand, the material is converted into liquid through cooling to carry out internal reflux of the tower, necessary liquid phase reflux is provided for processes such as fractionation and the like, and stable operation of mass transfer and heat transfer processes in the tower is ensured, so that the separation effect and quality of products are improved, and on the other hand, the tower top product can be conveniently collected and subsequently treated in a liquid form. The installation height of the crude styrene tower top cooler (E-402) is 30.6m, circulating water flows through the crude styrene tower top cooler (E-402) after passing through the refined styrene tower top cooler (E-410), the inlet flow rate and the pressure of the circulating water flowing through the pipe layer of the crude styrene tower top cooler (E-402) are low, the pipe layer of the crude styrene tower top cooler (E-402) is easy to block the pipe bundle of the crude styrene tower top cooler (E-402), and the shell side outlet temperature TI-4005 of the crude styrene tower top cooler (E-402) is higher than 45 ℃. Disclosure of utility model First, the technical problem to be solved The utility model provides a device for improving the heat exchange effect of circulating water of a crude styrene tower top cooler, which aims to solve the technical problems that the circulating water flows through the inlet flow and the pressure of a pipe layer of the crude styrene tower top cooler to cause scaling and deposition of the pipe layer of the crude styrene tower top cooler, so that a heat exchanger pipe bundle is blocked, and the heat exchange effect is affected. (II) technical scheme In order to solve the technical problems, the utility model provides a device for improving the circulating water heat exchange effect of a crude styrene tower top cooler, which comprises a pressurizing main pump, wherein an inlet of the pressurizing main pump is provided with a main pump inlet pipeline communicated with circulating water main pipe, an outlet of the pressurizing main pump is provided with a main pump outlet pipeline, an outlet valve of the pressurizing main pump is arranged on the main pump outlet pipeline, the main pump outlet pipeline is communicated with an inlet of a refined styrene tower top cooler, an outlet of the refined styrene tower top cooler is communicated with an inlet of the crude styrene tower top cooler through a refined tower heat exchanger outlet pipeline, and an outlet of the crude styrene tower top cooler is communicated with circulating water main pipe backwater through a crude tower heat exchanger outlet pipeline. Further, an exhaust valve is arranged on an inlet pipeline of the main pump, and when the pump is overhauled, the valve is closed to be emptied. Further, a reverse shower valve is arranged on an outlet pipeline of the main pump and used for emptying and reverse shower when the pump is overhauled and emptied. Further, an outlet flow meter is arranged at the inlet of the main pump outlet pipeline close to the top cooler of the refined styrene tower. The device comprises a main pressurizing pump, wherein the main pressurizing pump is arranged in parallel with a main pressurizing pump, an inlet of the main pressurizing pump is provided with a main pressurizing pump inlet pipeline communicated with the circulating water main pipe in water, an outlet of the main pressurizing pump is provided with a main pressurizing pump outlet pipeline, an outlet valve of the main pressurizing pump is arranged on the main pressurizing pump outlet pipeline, and the main pressurizing pump outlet pipeline are communicated with an inlet of a top cooler of the refined styrene tower together. Further, an exhaust valve is arranged on the inlet pipeline of the standby pump, and when the pump is overhauled, the valve is closed to be emptied. Further, a reverse shower valve is arranged on the pump preparation outlet pipeline and used for emptying and reverse shower when the pump is overhauled and emptied. (III) beneficial effects The utility model provides a device for improving the heat exchange effect of circulating water of a crude styrene tower top cooler, wherein a booster pump is additionally arranged at the inlet of a circulating water main pipe of the crude styrene tower top cooler, so that the scaling and deposition of a pipe layer of the crude styrene tower top cooler caused by lower pressure and lower flow flowing through the crude styrene tower top cooler can be avoided, and th