CN-224215957-U - Cleaning system for MTO water-washing water cooler

Abstract

The utility model discloses a cleaning system for an MTO water-washing cooler, relates to the technical field of online cleaning of coolers, and is mainly used for solving the problem that oil sludge blocks a water-washing water channel of the water-washing cooler. The reagent conveying pipe is sequentially provided with a reagent recovery valve, a recovery sedimentation tank, a recovery pump, a reagent tank, a reagent pump and a reagent output valve along the reagent conveying direction, wherein a flushing reagent is filled in the reagent tank. The utility model provides a cleaning system for an MTO water washing cooler, which can automatically clean oil sludge in a water washing channel, ensures the heat exchange efficiency of the water washing cooler, simultaneously does not need too much labor, and reduces the labor intensity and the maintenance cost.

Inventors

• MA XIAOZHONG
• WANG GANG
• ZHUO RUNSHENG

Assignees

• 上海润和科华工程设计有限公司

Dates

Publication Date

20260508

Application Date

20250613

Claims (9)

1. 1. The cleaning system for the MTO water washing cooler comprises a water washing cooler (1) and is characterized by further comprising a reagent conveying pipe (2) with an input end and an output end communicated with a water washing channel of the water washing cooler (1), wherein a reagent recovery valve (22), a recovery sedimentation tank (3), a recovery pump (4), a reagent tank (5), a reagent pump (6) and a reagent output valve (21) are sequentially arranged on the reagent conveying pipe (2) along the reagent conveying direction, and flushing reagent is arranged in the reagent tank (5).
2. 2. The cleaning system for MTO water-washing cooler according to claim 1, wherein the water-washing cooler (1) is connected with a cooling water input pipe (11), a cooling water output pipe (12), a water-washing water input pipe (13) and a water-washing water output pipe (14), the water-washing water input pipe (13) is provided with a water-washing water input valve (131), and the water-washing water output pipe (14) is provided with a water-washing water output valve (141).
3. 3. The cleaning system for the MTO water-washing cooler according to claim 2, wherein an inlet pressure gauge (15) is arranged on a water-washing water input pipe (13) between the water-washing water input valve (131) and the water-washing cooler (1), an outlet pressure gauge (16) is arranged on a water-washing water output pipe (14) between the water-washing water output valve (141) and the water-washing cooler (1), and the water-washing water input valve (131), the inlet pressure gauge (15), the water-washing water output valve (141) and the outlet pressure gauge (16) are all in signal connection with a differential pressure transmitter (7).
4. 4. A cleaning system for MTO water-wash water coolers according to claim 3, characterized in that a water-wash water input pipe (13) between the water-wash water input valve (131) and the inlet pressure gauge (15) is connected to the output end of the reagent delivery pipe (2), and a water-wash water output pipe (14) between the water-wash water output valve (141) and the outlet pressure gauge (16) is connected to the input end of the reagent delivery pipe (2).
5. 5. The cleaning system for MTO water wash water coolers according to claim 3 or 4, characterized in that the reagent pump (6) is connected to an electric motor (61), which electric motor (61) is signally connected to a differential pressure transmitter (7).
6. 6. The cleaning system for an MTO water-washing machine according to claim 5, wherein the motor (61) is further signal-connected to a reagent recovery valve (22) and a reagent output valve (21).
7. 7. The cleaning system for an MTO water-washing cooler according to claim 1, wherein a dosing tube (51) is connected to the reagent tank (5).
8. 8. The cleaning system for the MTO water-washing cooler according to claim 1, wherein reagent inlets and oil skimming grooves (33) are respectively arranged on the side walls of the two sides of the recovery sedimentation tank (3), the oil skimming grooves (33) are communicated with the oil tank (34), and reagent outlets are further arranged on the side walls of the recovery sedimentation tank (3) below the oil skimming grooves (33).
9. 9. The cleaning system for the MTO water-washing cooler according to claim 8, wherein the top of the recovery sedimentation tank (3) is connected with a deoxidized water input pipe (31), and the bottom is provided with a drain pipe (32).

Description

Cleaning system for MTO water-washing water cooler Technical Field The utility model relates to the technical field of online cleaning of coolers, in particular to a cleaning system for an MTO water-washing water cooler. Background In an MTO (methanol to olefin) device, the product of the reactor is high-temperature reaction gas at a temperature of approximately 500 ℃, the high-temperature reaction gas is recovered to have high temperature in the high-temperature reaction gas in a mode of overheating saturated methanol gas, the temperature is generally reduced to 250-280 ℃, the cooled reaction gas enters a quenching tower to remove solid catalyst and reduce the temperature, the reaction gas washed by the quenching tower enters a water eluting tower to remove residual solid catalyst and further reduce the temperature, and finally the reaction gas is cooled to within 45 ℃ and is sent to an olefin separation device. Among them, the water washing system of the MTO apparatus is a key technology that directly affects the stable operation of the apparatus. The reaction gas discharged from the quenching tower at about 110 ℃ needs further water washing, and the main purpose of the reaction gas is to condensate water generated in the product gas and send the water to a sewage stripping tower, solidify and separate out oil substances generated by MTO side reaction and wash a small amount of catalyst in the product gas. The oil substances in the water washing system are analyzed, wherein the aromatic hydrocarbon content is up to 95 percent, and the trimethyl benzene, the tetramethyl benzene and the pentamethyl benzene are the main substances. However, since the freezing point of the oil substances themselves in the water wash of the MTO apparatus is relatively low, condensation is also extremely easy to occur in the water wash. Thus, the oily substances and solid catalyst in the aqueous wash water of the MTO unit will mix to form sludge. The continuous accumulation of sludge can block the water washing channels of the water washing cooler, resulting in insignificant heat exchange efficiency. At present, in order to solve the problem, manual flushing water is required to wash the water cooler once every week on average, and disassembly of the cooler is required to be overhauled and flushed once every half year, which results in high labor intensity and high overhauling cost. Disclosure of utility model The utility model aims to provide a cleaning system for an MTO water-washing cooler, which can automatically clean oil sludge in a water-washing channel, ensures the heat exchange efficiency of the water-washing cooler, simultaneously does not need excessive manual participation, and reduces the labor intensity and the maintenance cost. The cleaning system for the MTO water washing cooler comprises a water washing cooler, and further comprises a reagent conveying pipe, wherein an input end and an output end of the reagent conveying pipe are communicated with a water washing channel of the water washing cooler, a reagent recovery valve, a recovery sedimentation tank, a recovery pump, a reagent tank, a reagent pump and a reagent output valve are sequentially arranged on the reagent conveying pipe along the reagent conveying direction, and a flushing reagent is filled in the reagent tank. As a further improvement of the utility model, the water washing cooler is connected with a cooling water input pipe, a cooling water output pipe, a water washing water input pipe and a water washing water output pipe, the water washing water input pipe is provided with a water washing water input valve, and the water washing water output pipe is provided with a water washing water output valve. As a further improvement of the utility model, an inlet pressure gauge is arranged on a water washing input pipe between the water washing input valve and the water washing cooler, an outlet pressure gauge is arranged on a water washing output pipe between the water washing output valve and the water washing cooler, and the water washing input valve, the inlet pressure gauge, the water washing output valve and the outlet pressure gauge are all connected with a differential pressure transmitter through signals. As a further improvement of the utility model, a water washing input pipe between the water washing input valve and the inlet pressure gauge is connected with the output end of the reagent conveying pipe, and a water washing output pipe between the water washing output valve and the outlet pressure gauge is connected with the input end of the reagent conveying pipe. As a further development of the utility model, the reagent pump is connected to an electric motor, which is connected to the differential pressure transmitter in a signal manner. As a further improvement of the utility model, the motor is also connected with a reagent recovery valve and a reagent output valve in a signal way. As a further improvement of the utility model, the reage