Acid regeneration system, cleaning system, acid regeneration method and cleaning method thereof
A cleaning system and acid regeneration technology, which is applied in the field of acid regeneration systems, can solve problems such as poor cleaning effect and complicated operation and maintenance, and achieve the effect of saving maintenance costs and reducing damage
Active Publication Date: 2021-09-28
WISDRI ENG & RES INC LTD
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Problems solved by technology
[0004] However, in the process of production and operation, the concentrated acid filter will gradually be blocked by iron oxide powder and waste acid crystals over time. For this unavoidable situation, the backup filter is usually manually switched and the filter is blocked. Cleaning, or only using water to clean the filter, the cleaning effect is very poor and the operation and maintenance are complicated
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[0015] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
[0016] Various embodiments according to the present invention will be described in detail below with reference to the accompanying drawings.
[0017] figure 1 Shown is the cleaning system of the present invention for acid regeneration systems, such as figure 1 As shown, the cleaning system 100 includes:
[0018] The first pressure gauge 110 and the second pressure gauge 120 are installed on the waste acid supply pipeline 300 where the waste acid passes through the waste acid supply valve 310 and the filter 320 to the roaster 200, and are used to detect the...
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The invention provides a cleaning system, comprising: a first pressure gauge located on the waste acid supply pipeline before the waste acid enters the filter; a second pressure gauge located on the waste acid supply pipeline between the filter and the roaster ; The control unit determines whether the pressure difference between the waste acid supply pipelines before and after the filter is within the specified range, and if it is not within the specified range, closes the waste acid supply valve, and sends an opening signal to the first valve and the second valve; clean the pipe The first end is the inlet of the cleaning solution, the second end is the outlet of the cleaning solution, the filter is located between the two ends, the first valve is between the first end and the filter, and the second end and the filter are connected. There is a second valve between them. When the first valve and the second valve receive the opening signal, they enter the open state, and the filter is washed by the cleaning liquid. The acid regeneration system also includes at least two waste acid supply pipelines and a cleaning system, one of which is a backup pipeline. The cleaning system can automatically clean the spent acid feed line blocked by the acid regeneration system.
Description
technical field [0001] The invention relates to the technical field of waste acid regeneration, and more specifically, to an acid regeneration system, a cleaning system, an acid regeneration method and a cleaning method thereof. Background technique [0002] The waste acid produced by cold-rolled pickling strip is extremely corrosive. If it is not treated, it will cause serious pollution to the environment. At the same time, due to the large amount of waste acid discharge, it will also increase the cost of pickling. Nowadays, in the treatment of pickling waste liquid, the spray roasting process is the most advanced regeneration process. [0003] In the spray roasting process, the waste acid is first pumped to the Venturi pre-concentrator through the waste acid pump, and is fully mixed with the high-temperature roasting gas in the same flow direction at the throat, and a part of the water and hydrochloric acid in the waste acid liquid evaporates to form concentrated waste. ...
Claims
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IPC IPC(8): B01D29/01B01D29/60B01D29/66B01D35/143C02F1/00C02F1/12
CPCB01D29/01B01D29/60B01D29/66B01D35/143C02F1/001C02F1/12
Inventor 高俊峰赵金标林清鹏万焕堂丁煜赵海秦健常勤学王军郭金仓吴宗应
Owner WISDRI ENG & RES INC LTD