Online paraffin removal system of crude methanol filtration system

Abstract

The invention discloses an online paraffin removal system of a crude methanol filtration system. The online paraffin removal system comprises a filter. A crude methanol inlet pipeline is connected to a lower inlet of the filter, and an upper outlet of the filter is connected to a crude methanol discharge pipeline. The online paraffin removal system is characterized in that the top of the filter is connected with a low pressure steam pipeline, a first double stop valve is arranged at the top of the filter, one end of the first double stop valve is connected to a top exhaust port of the filter, the other end of the first double stop valve is connected with the low pressure steam pipeline, a second double switching valve is connected to a bottom drain port of the filter, a branching pipe is connected to an outlet of the second double switching valve, one branch pipe of the branching pipe is connected to a crude methanol recovery tank, and the other branch pipe of the branching pipe is connected to a paraffin collection net. The online paraffin removal system has the advantages that the online paraffin removal system has a simple structure and a low cost, the potential safety hazards in paraffin clogging, cutting and washing of crude methanol filters are effectively avoided, and the paraffin cleaning process is safe and efficient.

Description

technical field [0001] The invention relates to the field of methanol synthesis devices, in particular to an online wax removal system of a crude methanol filtration system. Background technique [0002] In the methanol synthesis device, the generation of paraffin as a synthetic by-product is inevitable. The current conventional design is to install a high-precision filter after the crude methanol separator to filter and intercept the paraffin in the crude methanol. , so as to avoid excessive paraffin affecting product quality. However, when the catalyst reaches the end stage, the by-product paraffin is more, and the frequency of filter blockage increases sharply. Frequent disassembly and cleaning of the filter of the high-pressure equipment will result in a heavy workload and a high safety risk. Another common transformation scheme is to add a set of dedicated online wax removal equipment before the crude methanol water cooler, but it requires a large investment and is dif...

AI Technical Summary

Problems solved by technology

However, when the end of the catalyst is reached, there will be more paraffin as a by-product, and the frequency of filter clogging will increase sharply. Frequent disassembly and cleaning of the filter of the high-pressure equipment will be very heavy and pose a high safety risk.

Another common modification solution is to add a set of special online wax removal equipment before the crude methanol water cooler, but it requires a large investment, and for chemical plants with a relatively compact structure layout, the construction is more difficult

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