Method and device for slowing down corrosion of reflux system at top of condensate stripping tower

A technology of condensate and stripping tower, which is applied in the fields of coal chemical industry and petroleum processing, can solve the problems that restrict the long-term stable operation of the device, the corrosion and leakage of the tower top condenser, and the threat to the safe production of the device, so as to reduce unplanned shutdown and reduce The effect of inspection and maintenance costs and reduction of maintenance costs

Active Publication Date: 2020-10-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is a common problem of corrosion leakage in the overhead condenser designed with a reflux system
Most of the factories with corrosion occur between half a year and one year after driving. The corroded materials

Method used

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  • Method and device for slowing down corrosion of reflux system at top of condensate stripping tower

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Experimental program
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Effect test

Embodiment 1

[0063] Please refer to figure 1 , the present embodiment provides a device for slowing down the corrosion of the condensate stripper overhead reflux system, which includes a condensate stripper 1 (single tower), a feed heat exchanger 2, a spray tower 3, a reflux pump 4 and Reflux heat exchanger 5, the inlet of feed heat exchanger 2 communicates with the tower top outlet of condensate stripping tower 1, the inlet of the tower bottom of spray tower 3 communicates with the outlet of feed heat exchanger 2, and reflux pump 4 The inlet of the pump is connected with the outlet at the bottom of the spray tower 3, the outlet of the reflux pump 4 is connected with the inlet of the reflux heat exchanger 5, and the outlet of the reflux heat exchanger 5 is respectively connected with the inlet of the top of the spray tower 3 and the condensed liquid vapor The entrance on the top of the tower 1 is connected. The recuperator 5 is also provided with a circulating cooling water inlet 9 and a ...

Embodiment 2

[0068] This embodiment provides a device for slowing down the corrosion of the condensate stripping tower overhead reflux system, which includes a condensate stripping tower (double tower), a feed heat exchanger, a spray tower, a reflux pump and a reflux heat exchanger, The inlet of the feed heat exchanger is connected with the top outlet of the condensate stripping tower, the inlet of the bottom of the spray tower is connected with the outlet of the feed heat exchanger, and the inlet of the reflux pump is connected with the outlet of the bottom of the spray tower The outlet of the reflux pump communicates with the inlet of the reflux heat exchanger, and the outlet of the reflux heat exchanger communicates with the inlet at the top of the spray tower and the inlet at the top of the condensate stripping tower respectively. The return heat exchanger is also provided with a circulating cooling water inlet and a circulating cooling water outlet.

[0069] Using the above-mentioned ...

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Abstract

The invention provides a method and device for slowing down corrosion of a reflux system at the top of a condensate stripping tower, belonging to the technical field of the coal chemical industry andpetroleum processing. The device comprises a condensate stripping tower and a spray tower, wherein tower-top non-condensable gas output from the tower top of the condensate stripping tower is cooled by the spray tower. The device is simple in structure and convenient operation; the spray tower is used as a cooling system of the non-condensable gas to replace a traditional overhead condenser, so the problem of local severe corrosion of ammonia substances in an overhead reflux system in an existing condensate stripping process can be effectively solved or relieved, inspection and maintenance cost is reduced, non-planned shutdown caused by leakage is avoided or reduced, maintenance cost is reduced, and safe, stable and long-period operation of the whole stripping system is guaranteed.

Description

technical field [0001] The invention relates to the technical fields of coal chemical industry and petroleum processing, in particular to a method and a device for slowing down the corrosion of the top reflux system of a condensate stripping tower. Background technique [0002] The CO conversion process is a key link in the coal chemical production process and an important purification process in the synthesis of ammonia, methanol and hydrogen production. In order to meet the requirements of water saving and energy saving, the process condensate of coal gasification coal water slurry process and dry powder process will be recycled. [0003] The function of the condensate stripping tower in the conversion section is to strip the ammonia in the low-temperature condensate returned to the gasification to maintain the ammonia balance in the system. The stripping effect will directly affect the ammonia index in the gasification ash water, thereby affecting to the discharge of gas...

Claims

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Application Information

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IPC IPC(8): B01D5/00B01D3/38
CPCB01D5/0093B01D5/003B01D3/38
Inventor 刘希武曹振兴崔新安陈章淼刘旭霞李辉邹洋高阳赵小燕
Owner CHINA PETROLEUM & CHEM CORP
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