A solid-liquid hydraulic centrifugal separation device and pickling waste acid reuse system
A technology of centrifugal separation and pickling waste acid, which is applied in the direction of separation of sediments by centrifugal force, metallurgical wastewater treatment, water/sewage multi-stage treatment, etc., which can solve the problems of ineffective acid recovery, high maintenance costs, and large equipment investment and other problems, to achieve the effect of simple structure, high work efficiency and short processing time
Active Publication Date: 2018-05-29
SHEN KAN QINHUANGDAO GENERAL ENG DESIGN & RES INST CORP MCC
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Problems solved by technology
[0003] At present, the conventional acid-base neutralization treatment method is used for waste acid liquid, which not only cannot effectively recover acid liquid, but also produces a large amount of metal sludge (containing heavy metals and fluorine)
At the same time, the acid-base neutralization treatment method requires a large investment in equipment, a large area and high maintenance costs
Method used
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[0056] The solid-liquid hydraulic centrifugal separation device and the acid-washing waste acid recycling system of the present invention will be further explained and explained below in conjunction with the accompanying drawings and specific embodiments. However, the explanation and explanation do not apply to the technical solution of the present invention constitutes an improper restriction.
[0057] figure 1 The structure of the solid-liquid hydraulic centrifugal separation device in one embodiment of the present invention is shown.
[0058] like figure 1 As shown, the solid-liquid hydraulic centrifugal separation device 11 in the above embodiment includes a casing 111 , an outer cylinder 112 , an inner cylinder 113 , a water baffle 114 , a secondary clarification pipe 115 and a sludge storage bin 116 . The upper part of the casing 111 is provided with a feeding port 111a, the bottom of the casing 111 is provided with a sludge discharge port 111b, the outer cylinder 112 ...
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The invention discloses a solid-liquid hydraulic centrifugal separation device, which comprises: a shell, the upper part of which is provided with a feed port, and the bottom of which is provided with a sludge discharge port; There is a tangential inlet at the feed port, and the tangential inlet is set so that the direction in which the solid-liquid mixture enters the outer cylinder is perpendicular to the axial direction of the outer cylinder; the bottom end of the outer cylinder has an opening; the inner cylinder is located in the outer cylinder , and the upper end of the inner cylinder protrudes from the shell, the upper end of the inner cylinder is provided with a clear liquid outlet, the bottom end of the inner cylinder has an opening, and the bottom end of the inner cylinder is relatively higher than the bottom end of the outer cylinder; It is located at the bottom opening of the outer cylinder, and a water hole is provided on the water retaining plate; the lower end of the secondary clarification pipe communicates with the water hole, and the upper end of the secondary clarification pipe is connected to the cavity formed between the shell and the outer cylinder. body connected. The invention also discloses a pickling waste acid recycling system, which comprises: a waste acid storage tank, a variable speed stirring device, a solid-liquid hydraulic centrifugal separation device, an acid liquid tank, a resin bed acid absorption column, and a water tank.
Description
technical field [0001] The invention relates to a centrifugal device, in particular to a solid-liquid separation device. The invention also relates to a pickling waste acid recycling system comprising the solid-liquid separation device. Background technique [0002] Stainless steel is used in a wide range of industrial production fields for its comprehensive properties such as superior corrosion resistance, unique surface and excellent processing performance, which promotes the rapid development of stainless steel production. As a key process in the production process of stainless steel, pickling of stainless steel strip not only gives stainless steel a beautiful and beautiful appearance, but also directly affects the processing performance and surface quality of cold-rolled stainless steel. A large amount of acid is used in the pickling process. When the metal ions and other inorganic impurities in the acid solution reach a certain concentration, the acid solution needs to...
Claims
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IPC IPC(8): B01D21/26C02F9/04C02F103/16
Inventor 黄敏张彤刘洋
Owner SHEN KAN QINHUANGDAO GENERAL ENG DESIGN & RES INST CORP MCC