CN-121994070-A - Device and method for cleaning shell pass of overhead condenser

CN121994070ACN 121994070 ACN121994070 ACN 121994070ACN-121994070-A

Abstract

A cleaning device and a cleaning method for a shell pass of a top-passing condenser belong to the technical field of heat exchange equipment maintenance and mainly aim to clean the shell pass of the top-passing condenser more efficiently, conveniently and thoroughly. The cleaning device comprises a circulating pipeline and a cleaning pipeline, wherein the circulating pipeline comprises a circulating water inlet pipe and a circulating water return pipe, a loop which is communicated end to end is formed by the circulating water inlet pipe and the circulating water return pipe through a shell pass of a top condenser, a switching valve is arranged on the circulating water return pipe, the cleaning pipeline comprises a bypass pipe and a dispensing pipe, two ends of the bypass pipe are respectively communicated with an inlet pipe and an outlet pipe of the switching valve, a cleaning pump is arranged on the bypass pipe, two ends of the dispensing pipe are respectively communicated with the inlet pipe and the outlet pipe of the cleaning pump, a dispensing tank is arranged on the dispensing pipe, a first control valve is arranged on the inlet pipe of the cleaning pump, a second control valve is arranged on the outlet pipe of the cleaning pump, a third control valve is arranged on the inlet pipe of the dispensing tank, and a fourth control valve is arranged on the outlet pipe of the dispensing tank.

Inventors

XIE YUJUN
LIU HAIFENG
SUN AIGUANG
ZHAO WENLIANG
HOU XIANGJUN
LIU YONG
MAO WEI
Man Hongli
LI JIABAO

Assignees

国能榆林化工有限公司

Dates

Publication Date: 20260508
Application Date: 20260105

Claims (10)

1. A top-passing condenser shell side cleaning apparatus, comprising: a circulation line and a purge line; The circulating pipeline comprises a circulating water inlet pipe and a circulating water return pipe, the circulating water inlet pipe and the circulating water return pipe form a loop which is communicated end to end through a shell pass of the overhead condenser, and a switching valve is arranged on the circulating water return pipe; the cleaning pipeline comprises a bypass pipe and a dispensing pipe, wherein two ends of the bypass pipe are respectively communicated with an inlet pipe and an outlet pipe of the switching valve, and a cleaning pump is arranged on the bypass pipe; The cleaning device comprises a cleaning pump, a dispensing tank, a first control valve, a second control valve, a third control valve, a fourth control valve and a fourth control valve, wherein the first control valve is arranged on an inlet pipe of the cleaning pump, the second control valve is arranged on an outlet pipe of the cleaning pump, the third control valve is arranged on an inlet pipe of the dispensing tank, and the fourth control valve is arranged on an outlet pipe of the dispensing tank.
2. The overhead condenser shell side cleaning apparatus according to claim 1, wherein the circulation line further comprises: the water injection pipe is communicated with the circulating water inlet pipe, and a water injection valve is arranged on the water injection pipe.
3. The overhead condenser shell side cleaning apparatus according to claim 1, wherein the circulation line further comprises: and the drain pipe is communicated with the circulating water return pipe, and a drain valve is arranged on the drain pipe.
4. The overhead condenser shell side washer of claim 1, wherein the circulation inlet tube is provided with a one-way valve on a line in communication with the circulation return tube, the one-way valve configured to allow fluid within the circulation return tube and the bypass tube to enter the circulation inlet tube in one direction.
5. The overhead condenser shell side cleaning apparatus according to claim 1, wherein a drain valve is further provided on an inlet pipe of the cleaning pump, the drain valve being provided on an upstream side of the first control valve in a flow path direction of fluid in the inlet pipe of the cleaning pump.
6. The overhead condenser shell side cleaning apparatus according to claim 1, wherein the circulation inlet tube is provided with a flow meter for monitoring the flow of fluid in the circulation inlet tube.
7. The overhead condenser shell side cleaning apparatus according to claim 1, wherein the circulating water pipe is further provided with an exhaust valve, and wherein the exhaust valve is located at an apex of a fluid flow path in the circulating water pipe.
8. The over-the-top condenser shell side cleaning device according to claim 1, wherein a dosing hopper is communicated with the top of the dispensing tank, and a dosing valve is arranged on a pipeline through which the dosing hopper is communicated with the dispensing tank.
9. The over-the-top condenser shell side cleaning device according to claim 1, wherein an evacuation valve is provided at the bottom of the dispensing canister for evacuating the dispensing canister.
10. A method of cleaning a top condenser shell side, applied to a top condenser shell side cleaning apparatus according to any one of claims 1-9, the method comprising: Closing the switching valve, opening the first control valve, the second control valve and the third control valve, and adding a stripping agent into the dispensing tank to prepare stripping liquid; closing the third control valve and opening the fourth control valve under the condition that the stripping liquid reaches a first preset concentration, and discharging stripping medium and sediment after the first time of circulation; After the sewage discharge is finished, water is supplemented into the shell pass of the overhead condenser; Opening the third control valve when the liquid level of the shell side of the overhead condenser reaches a preset liquid level, and adding a corrosion and scale inhibitor into the dispensing tank to prepare a corrosion and scale inhibitor liquid; And under the condition that the corrosion and scale inhibitor reaches a second preset concentration, closing the third control valve, opening the fourth control valve, and discharging the corrosion and scale inhibitor after the second time of circulation.

Description

Device and method for cleaning shell pass of overhead condenser Technical Field The application belongs to the technical field of heat exchange equipment maintenance, and particularly relates to a device and a method for cleaning a shell pass of a top-passing condenser. Background The overhead condenser is used as key heat exchange equipment in the industrial fields of chemical industry, petroleum, energy sources and the like, and impurities such as silt, scale, greasy dirt, microbial sediment and the like are easy to accumulate in a shell side structure due to long-term operation. The sediment can obviously reduce the heat exchange efficiency of equipment, so that the energy consumption is increased, the production efficiency is reduced, the problems of pipeline blockage, equipment corrosion and the like can be caused, and even the safe and stable operation of the whole production system is influenced when serious. Therefore, maintenance cleaning of the overhead condenser shell side is required periodically or aperiodically. At present, the traditional cleaning mode relies on a high-pressure water source, equipment pipelines are required to be disassembled, sealing elements are easy to damage in the cleaning process, the cleaning effect on stubborn sludge is limited, and particularly sediments at complex structures such as shell side corners, baffle plate gaps and the like are difficult to thoroughly clean. Disclosure of Invention In view of the above, the application provides a device and a method for cleaning the shell side of a top-passing condenser, which mainly aims to realize more efficient, convenient and thorough cleaning of the shell side of the top-passing condenser. In order to achieve the above purpose, the present application mainly provides the following technical solutions: In one aspect of the present application, there is provided a shell side cleaning apparatus for an overhead condenser, comprising: a circulation line and a purge line; The circulating pipeline comprises a circulating water inlet pipe and a circulating water return pipe, the circulating water inlet pipe and the circulating water return pipe form a loop which is communicated end to end through a shell pass of the overhead condenser, and a switching valve is arranged on the circulating water return pipe; the cleaning pipeline comprises a bypass pipe and a dispensing pipe, wherein two ends of the bypass pipe are respectively communicated with an inlet pipe and an outlet pipe of the switching valve, and a cleaning pump is arranged on the bypass pipe; The cleaning device comprises a cleaning pump, a dispensing tank, a first control valve, a second control valve, a third control valve, a fourth control valve and a fourth control valve, wherein the first control valve is arranged on an inlet pipe of the cleaning pump, the second control valve is arranged on an outlet pipe of the cleaning pump, the third control valve is arranged on an inlet pipe of the dispensing tank, and the fourth control valve is arranged on an outlet pipe of the dispensing tank. Optionally, the circulation pipeline further includes: the water injection pipe is communicated with the circulating water inlet pipe, and a water injection valve is arranged on the water injection pipe. Optionally, the circulation pipeline further includes: and the drain pipe is communicated with the circulating water return pipe, and a drain valve is arranged on the drain pipe. Optionally, a one-way valve is arranged on a pipeline which is communicated with the circulating water inlet pipe and the circulating water return pipe, and the one-way valve is configured to allow fluid in the circulating water return pipe and the bypass pipe to enter the circulating water inlet pipe in a one-way mode. Optionally, a drain valve is further disposed on the inlet pipe of the cleaning pump, and the drain valve is disposed on an upstream side of the first control valve along a flow path direction of the fluid in the inlet pipe of the cleaning pump. Optionally, the circulating water inlet pipe is provided with a flowmeter for monitoring the fluid flow in the circulating water inlet pipe. Optionally, an exhaust valve is further arranged on the circulating water return pipe, and the exhaust valve is located at the top point of the fluid flow path in the circulating water return pipe. Optionally, the top of the dispensing tank is communicated with a dosing hopper, and a dosing valve is arranged on a pipeline of the dosing hopper communicated with the dispensing tank. Optionally, an evacuation valve is arranged at the bottom of the dispensing tank and is used for evacuating the dispensing tank. In another aspect of the present application, there is provided a method for cleaning a top condenser shell side, applied to any one of the above-mentioned top condenser shell side cleaning devices, the method comprising: Closing the switching valve, opening the first control valve, the second control valve an