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Acid liquid filter device of stainless steel acid washing line

A filter device and pickling line technology, applied in the direction of filter circuit, filter separation, chemical instruments and methods, etc., can solve the problems of low efficiency of multi-stage sedimentation, large system footprint, short life of wearing parts, etc., and achieve cost Low, reduce work difficulty, improve production efficiency

Pending Publication Date: 2019-04-19
YONGXING SPECIAL STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the efficiency of multi-stage sedimentation is low, the system occupies a large area, and the sedimentation tank must be emptied regularly for cleaning
However, the equipment for cyclone precipitation basically relies on imports, the cost is high, the life of wearing parts is short, and the operating cost is quite high

Method used

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  • Acid liquid filter device of stainless steel acid washing line
  • Acid liquid filter device of stainless steel acid washing line
  • Acid liquid filter device of stainless steel acid washing line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A stainless steel pickling line acid filter device, comprising a high-position desilter box 1 and a low-position filtrate box 2 connected through pipelines; The mud part includes a support member arranged in the mud removal box, a partition plate 12 with densely distributed filter holes arranged on the support member, and a filter plate 12 laid on the partition board and pulled up with its edge beyond the partition board. Cloth 13; the middle part of the filtrate tank is provided with an overflow baffle 21 for separating the inside of the filtrate tank into two cavities of liquid inlet and liquid outlet, and the top of the overflow baffle is lower than the height of the mouth of the filtrate tank, The acid inlet of the filtrate box is located at the liquid inlet, and the acid outlet is located at the outlet chamber; the bottom of the desilter box is provided with an acid outlet 14, and the top is provided with an acid inlet 15, and the inlet of the filtrate box The acid...

Embodiment 2

[0040] The difference from the above embodiment is that the support includes a lattice shelf 11 formed by intersecting a plurality of vertical shelves and forming a lattice, and a hole for acid liquid to circulate in the entire box body opened at the bottom of the lattice shelf. Circulation notch 111, the bottom end of the grid frame is connected to the bottom of the box body, the side edge of the grid frame is connected to the inner wall of the box body, and the partition is arranged on the grid frame.

[0041] The iron scale is relatively heavy, and generally 1.5 to 2 tons of iron scale are removed at one time. The length, width and height of the box body have reached one to two meters. In this embodiment, the length, width and height of the desilting box are 2 meters and 1.44 meters respectively. , 1.75 meters, and the length, width and height of the filtrate tank are 3 meters, 1.2 meters, and 1.1 meters. It is impossible to support the weight of a large amount of oxidized ...

Embodiment 3

[0045] The difference from the above embodiment is that the acid inlet of the desilter box is set on the desilter part, and the acid outlet of the desilter box is set on the side of the box body opposite to the acid inlet. At the bottom of one side, on the same side as the acid inlet, the tank body is provided with a purge pipe 4 for passing high-pressure gas into the acid liquid, and the purge pipe goes deep into the tank from the top of the tank body. In the main body, the acid liquid flow part is provided with an overflow port 18 which communicates with the acid inlet port of the filtrate tank through a pipeline. In this application, through the setting of the purge pipe, high-pressure air is continuously blown to the acid liquid in the desilting part, so that the acid liquid flows, and at the same time, the iron oxide scale in the filter bag is stirred to improve the filtration efficiency, speed up the filtration, and prevent sedimentation and clogging.

[0046] The acid i...

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Abstract

The invention belongs to the field of stainless steel acid washing, and in particular, relates to an acid liquid filter device of a stainless steel acid washing line. The device comprises a mud removing box in a higher place and a filtrate box in a lower place, which communicate through a pipeline; a filter mud removing part is arranged in the mud removing box; the filter mud removing part comprises a support piece arranged in the mud removing box, a separation plate arranged on the support piece and with dense filter holes, and filter cloth paved on the separation plate and with an edge upwards lifted beyond the separation plate; and an overflow separation plate for dividing the internal of the filtrate box into a liquid inlet cavity and a liquid outlet cavity is arranged at the middle part in the filtrate box. Through cooperation between the mud removing box and the filtrate box, a lot of scale precipitates in acid liquid are simply and quickly removed; and meanwhile, the acid liquidis always recycled, the efficient long-time lasting operation of an acid washing pool is guaranteed, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of stainless steel pickling, and in particular relates to an acid liquid filtering device for a stainless steel pickling line. Background technique [0002] Stainless steel wire rods need to be treated by pickling process. During the pickling process, a large amount of iron oxide scale will fall off and form oxide scale precipitation in the acid solution. The accumulation of these scale deposits has two major disadvantages: 1. After excessive deposition, it will block pipes, pumps and other equipment, and reduce the effective volume of the acid tank, which will eventually affect normal use; 2. The scale contains various metal elements in stainless steel , continue to react with the acid solution, causing the concentration of metal ions in the acid solution to increase continuously, and the reaction efficiency to decrease continuously. [0003] Usually, iron oxide scale filtration adopts multi-stage sedimentation tank...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G3/02B01D36/04
CPCB01D36/04C23G3/025
Inventor 卢健儿梅晓方姚凌飞孟俊张键杜雯雯
Owner YONGXING SPECIAL STAINLESS STEEL
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