真空抽滤机常见问题分析及处置措施
1. 中国石油化工股份有限公司九江分公司, 江西九江 332004
2. 南京科技职业学院, 化学与材料工程学院, 江苏南京 210044
| 摘 要： | 真空抽滤机是GE水煤浆气化工艺闪蒸系统，后序至关重要的设备！利用真空负压抽滤过程，实现对絮凝沉降后的、较高浓度滤液的固液分离。生产运行过程包括：过滤、洗涤、卸渣、滤布清洗。重点介绍真空抽滤机投入正常生产运行后，先后出现过的、较为常见的问题。逐一进行原因分析，针对性提出处置及优化改造措施，实现抽滤机的连续运行、连续过滤。本文主要针对以往运行过程中，发生的常见问题：滤饼带水、滤布跑偏、真空度不足、滤布不洁漏斗外落渣、胶带跑偏打滑等，进行重点分析，提出相应的解决方案和创新改造措施。真空抽滤机运行的好坏直接关系到水煤浆气化单元的系统水质变化和长周期连续运行影响。在运行生产过程中，较为常见的问题不能及时识别和处理，可能带来运行工况的大幅波动。 |
| 关 键 词： | 跑偏; 刮刀; 真空度; 副斗; 密闭性; 胶带; 滤饼; 纠偏 |
| DOI： | 10.57237/j.cse.2024.03.002 |
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收稿日期: 2024-06-25
接受日期: 2024-08-08
在线出版日期: 2024-10-26
Analysis of Common Problems and Disposal Measures of Vacuum Filtration Machines
1. China Petroleum and Chemical Corporation Jiujiang Branch, Jiujiang 332004, China
2. School of Chemical and Materials Engineering, Nanjing Vocational College of Science and Technology, Nanjing 210044, China
| Abstract: | The vacuum filter is a crucial equipment for the flash evaporation system of GE coal water slurry gasification process, and the subsequent sequence is crucial! By utilizing vacuum negative pressure filtration process, solid-liquid separation of high concentration filtrate after flocculation and sedimentation is achieved. The production operation process includes filtration, washing, slag unloading, and filter cloth cleaning. Focus on the common problems that have occurred after the vacuum filter machine was put into normal production and operation. Analyze the reasons one by one, propose targeted disposal and optimization measures, and achieve continuous operation and filtration of the suction filter. This article mainly focuses on the common problems that have occurred in the past operation process, such as water carrying in the filter cake, deviation of the filter cloth, insufficient vacuum degree, unclean filter cloth falling out of the funnel, and slipping of the tape. Corresponding solutions and innovative transformation measures are proposed. The operation of the vacuum filter is directly related to the changes in water quality of the coal water slurry gasification unit and the impact of long-term continuous operation. During the production process, common problems that cannot be identified and dealt with in a timely manner may cause significant fluctuations in operating conditions. |
| Keywords: | Deviation; Scraper; Vacuum Degree; Auxiliary Bucket; Tightness; Adhesive Tape; Filter Cake; Rectify a Deviation |
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