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What operating conditions of the system are reflected by the decrease in the liquid temperature at the bottom of the high-level washer?

2009-12-04View Original

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In the carbon dioxide stripping process, the decrease in the liquid temperature in the high-pressure scrubber indicates what conditions within the system are changing Does it have an impact on system pressure?
Reply #22009-12-04
During the operation of the high-voltage coil, the following changes may have occurred. First, the system load has decreased, and the load entering the high-pressure washer has also decreased ; Second, the temperature of the water entering the high-pressure washer has decreased ; Third, as the low-pressure steam decreases, the thermal load on the urine tower is reduced, and the load on the high-pressure scrubber also decreases. Please have experts add more for the rest.
Reply #32009-12-04
This post was last edited by Xieshui on 2009-12-4 21:26. 1. The N/C value is low; 2. The pressure in the low-pressure drum is low; 3. The concentration of the low-methane liquid is low, as is its temperature; 4. The opening degree of the outlet valve is too small; 5. The inert gas content is high; 6. The temperature of the high-pressure water is low. When situations 1, 4, and 5 occur, the pressure in the high-pressure system is generally high, while the pressure for the other cases is low. Is this correct? Please advise.
Reply #42009-12-05
The last edit to this post was made by 1025199692 on 2009-12-5 at 07:46. Point 3, “Low concentration of the methanol solution,” is likely the cause of the increase in the temperature of the liquid coming out of the high-pressure washer; “I hadn’t paid attention to the impact of a low temperature of the methanol solution on its temperature
Reply #52009-12-06
““The concentration of the low-temperature liquid is too low,” which means that an excessive amount of water is fed into the high-temperature washer. Water cannot release heat when it enters, and its temperature is around 70 degrees, resulting in a large amount of heat being absorbed. This can cause the temperature of the liquid coming out of the high-temperature washer to drop. My friend, please pay close attention and give it a try.
Reply #62009-12-06
5# Water conservation: Increasing the amount of water added leads to more thorough absorption within the high-pressure washer; it is an exothermic process
Reply #72009-12-07
Friends upstairs, when assessing changes in the operational process parameters, it is first necessary to establish the underlying conditions. If numerous parameters are changing, it becomes difficult to make an accurate judgment. To determine changes in the temperature of the liquid coming out of the high-pressure scrubber, it is essential that the CO2 load remains constant, the oxygen content stays the same, the opening degree of the outlet valve of the high-pressure scrubber remains unchanged, the pressure in the low-pressure drum remains constant, and the N/C ratio remains unchanged. Under these conditions, the amount of CO2 and ammonia that condenses inside the high-pressure scrubber remains fixed (even under normal conditions for ammonium methoxide production, almost all of the CO2 and ammonia will condense). The amount of heat released from this condensation is also fixed. When dilute ammonium methoxide solution with a high water content is added, the water at 70 degrees Celsius absorbs heat and rises to over 150 degrees Celsius. Since the total amount of heat available is limited, it is not possible to meet the requirements, which means that the temperature of the liquid coming out will increase only to a limited extent; in other words, the temperature of the liquid will actually decrease. I hope this has made things clear; it’s just for your reference.
Reply #82009-12-08
This post was last edited by lxq700918 on 2009-12-8 08:16. My skills are limited; I’m just mixing things together randomly. . 1. Low temperature of the hot water. 2. Low temperature in the gas phase of the synthesis tower. 3. Low purity of CO2. 4. High concentration of low-methanol liquid, resulting in poor absorption efficiency. 5. Poor insulation performance. 6. The ejector does not draw in fluid properly or its suction efficiency is low. According to what was said above, does a high concentration of low-methanol liquid not affect the absorption efficiency of the high-efficiency scrubber? Can ammonia and CO2 still be completely absorbed at even higher concentrations?

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