Titanium dioxide production microfiltration washing device and process

A washing device and titanium dioxide technology, applied in the field of titanium dioxide, can solve the problems of large manpower, material resources, waste of water resources, large water consumption, etc., and achieve the effects of improving recovery rate, uniform pore size, and high precision

Pending Publication Date: 2021-09-21
ZHEJIANG DONGOU FILTERING MASCH MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using these traditional equipment, the operation process requires a lot of manpower and material resources, and it is generally intermittent operation, the production process takes a l

Method used

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  • Titanium dioxide production microfiltration washing device and process
  • Titanium dioxide production microfiltration washing device and process
  • Titanium dioxide production microfiltration washing device and process

Examples

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Example Embodiment

[0032] Example: one kind of titanium dioxide production microfiltration washing device, such as a figure 1 , The washing machine comprising a filter 22, filter 22 washing machine equipped with a discharge pipe 23, discharge pipe 23 is connected to a plurality of filter tubes 24 root; embodiment according to the present embodiment, the filter tubes provided with porous filter medium 24, such as figure 2 Shown, the filter medium is a microporous ultrahigh molecular weight polyethylene or other metallic and non-sintered powder sintering, preferably sintering ultrahigh molecular weight polyethylene is employed; said microporous filter medium is a length of 0.2 ~ 2m; micropores the filter medium is disposed in a rectangular arrangement; the ratio of length to outer diameter of the filter medium is less than 52.5 pores; the minimum gap between the porous filter medium and the porous filter medium disposed at 20 ~ 100mm, the gap 24 of the filter tube provided 100 ~ 400mm, the above param...

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Abstract

The invention discloses a titanium dioxide production microfiltration washing device and process, wherein the titanium dioxide production microfiltration washing device comprises a filtration washing machine; a discharge pipe is arranged in the filtration washing machine, and the discharge pipe is connected with a plurality of filtration pipes; a stirring device is arranged at the lower part in the filtration washing machine, and a spraying device is arranged at the upper part in the filtration washing machine; one side of the lower end of the filtration washing machine is connected with a feeding pipeline, the feeding pipeline is further connected with a first water inlet pipeline, and the lower end of the filtration washing machine is connected with a material returning pipeline and a thick slurry pipeline; the spraying device is externally connected with a second water inlet pipeline; the upper end of the filtration washing machine is connected with a low-pressure pipeline and an emptying pipeline; and a calandria is connected with a back-flushing pipeline, a back-blowing pipeline, a liquid outlet pipeline and a vacuum pipeline. According to the process, the titanium dioxide filter cake can be intercepted on the surfaces of the filter pipes, washing water penetrates through the filter cake thoroughly during washing, the washing effect is good, the process has the advantages of saving water and energy, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of titanium dioxide, in particular to a microfiltration washing device for producing titanium dioxide and a process thereof. Background technique [0002] Titanium dioxide is an important inorganic chemical pigment. There is a key process in its production, namely washing and bleaching. The quality of washing directly determines the pigment performance and optical performance of titanium dioxide. Industrial water washing generally uses centrifuges, vacuum drum leaf filters, vacuum leaf filters, diaphragm filter presses, etc. Using these traditional equipment, the operation process requires a lot of manpower and material resources, and is generally intermittent operation, the production process takes a long time, and the equipment needs to be maintained regularly. Its most important shortcoming is that water consumption is bigger in washing, has caused the waste of water resources. Contents of the inventio...

Claims

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Application Information

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IPC IPC(8): B01D29/33B01D29/52B01D29/78
CPCB01D29/33B01D29/52B01D29/78
Inventor 刘一灵胡良分陈金富饶显瑞
Owner ZHEJIANG DONGOU FILTERING MASCH MFG CO LTD
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