CN101745268B - Liquid filter method - Google Patents
Liquid filter method Download PDFInfo
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- CN101745268B CN101745268B CN2009103121740A CN200910312174A CN101745268B CN 101745268 B CN101745268 B CN 101745268B CN 2009103121740 A CN2009103121740 A CN 2009103121740A CN 200910312174 A CN200910312174 A CN 200910312174A CN 101745268 B CN101745268 B CN 101745268B
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Abstract
The invention relates to a liquid filter method, which belongs to the field of liquid filter. The technical problem solved by the invention is to provide a liquid filter method which can improve the filter effect of liquid with poor thermal stability. The liquid filter method comprises: controlling that the filter element (membrane) temperature is higher than or equal to the original liquid temperature T0 and is lower than or equal to the filtrate temperature T1, wherein the original liquid is liquid with the solubility very sensitive to temperature. By controlling the temperatures of the original liquid, a slurry, a filter element (membrane), a filtrate and a backwash liquid, the liquid filter method can reduce the pollution of the filter element (membrane) because of the change of temperature in the filter process, improves filter effect and filter quality, solves the technical difficulties unsolved for a long time in the field, provides a new choice for the field, and has broad application prospects.
Description
Technical field
The present invention relates to liquid filter method, belong to the liquid filtering field.
Background technology
The liquid that solubility is very responsive to temperature, like titanium tetrachloride, when filtering, if temperature reduces gradually, the impurity that is dissolved in the stoste (liquid before not filtering) can partly be separated out, and stops up filter core (film), or in filtrating, separates out impurity, influence filtrating quality.This class I liquid I mainly adopts the cloth bag filtration at present, and is lower to its filter effect requirement because cloth bag is with low cost, the aperture is big, even this class I liquid I is separated out partial impurities on cloth bag, also less to its influence.Along with the development of novel filter material, and people adopt inorganic membrane filtration to the raising of such liquid filtering quality requirement, and particularly intermetallic compound porous filter material (film) has the trend that replaces the cloth bag filtration gradually.But the aperture of inorganic filter membrane is less, and filtering accuracy is high, in case in the filter process, temperature takes place by slight the variation, this class I liquid I is separated out impurity easily, and inorganic filter membrane is stopped up, and produces and loses efficacy.
Summary of the invention
Technical problem to be solved by this invention provides a kind of liquid filter method, and this method can improve the filter efficiency of the liquid of poor heat stability.
Liquid filter method of the present invention is: control stoste temperature T
0The temperature T of≤filter core (film)
B≤filtrating temperature T
1Wherein, described liquid is the solubility liquid very responsive to temperature, promptly can separate out solid in the reduction liquid along with temperature, as: titanium tetrachloride liquid etc.
Further, liquid filter method of the present invention also comprises backwash filter core (film) step.The temperature of slip is T, and the temperature of backwash liquor is T
2Wherein, T
0≤T≤T
B≤T
1≤T
2
Liquid filter method of the present invention; The temperature of control stoste, slip, filter core (film), filtrating, backwash liquor; Can reduce and answer the filter core that variations in temperature causes or the pollution of filter membrane in the filter process, improve liquid filtering effect and filtrating quality, solve the long-term unsolved technical barrier in this area; For this area provides a kind of new selection, have broad application prospects.
Description of drawings
Fig. 1 is a process chart of the present invention.
The specific embodiment
Do further description below in conjunction with the embodiment specific embodiments of the invention, therefore do not limit the present invention among the described scope of embodiments.
Embodiment adopts the inventive method to filter titanium tetrachloride
Adopt the inventive method to filter titanium tetrachloride, process chart is as shown in Figure 1, and stoste (titanium tetrachloride before not filtering) is filtered through filter core filter core (film), obtains filtrating and slag liquid.When filter core or filter membrane obstruction, adopt backwash liquor backwash filter core (film), obtain slip.During filtration, the former liquid temp of titanium tetrachloride is 45 ℃, and filter core (film) temperature is 46 ℃, and the filtrating temperature is 48 ℃, and the backwash liquor temperature is 60 ℃, and the gained slurry temperature is 46 ℃.
Filter 100 tons of titanium tetrachloride stostes, the backwash number of times of the inventive method is 12 times, and the backwash number of times of method of not controlling the existing filtration titanium tetrachloride of temperature is 28 times.No solid is separated out in the filtrating of the inventive method, and existing method has micro-solid to separate out.
Claims (3)
1. liquid filter method is characterized in that: control stoste temperature T
0The temperature T of＜filter core or filter membrane
B＜filtrating temperature T
1Wherein, described liquid is its solubility liquid very responsive to temperature.
2. liquid filter method according to claim 1 is characterized in that: also comprise backwash filter core or filter membrane step, the temperature of backwash liquor is T
2, the temperature of slip is T; Wherein, T
0＜T＜T
B＜T
1＜T
2
3. according to each described liquid filter method of claim 1～2, it is characterized in that: described liquid is titanium tetrachloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103121740A CN101745268B (en) | 2009-12-24 | 2009-12-24 | Liquid filter method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103121740A CN101745268B (en) | 2009-12-24 | 2009-12-24 | Liquid filter method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101745268A CN101745268A (en) | 2010-06-23 |
| CN101745268B true CN101745268B (en) | 2012-06-27 |
Family
ID=42473263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103121740A Active CN101745268B (en) | 2009-12-24 | 2009-12-24 | Liquid filter method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101745268B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5540907A (en) * | 1992-07-22 | 1996-07-30 | Kronos, Inc. | Process for preparing high solids content titanium dioxide suspension with a dechlorinating agent |
| CN1935667A (en) * | 2006-10-16 | 2007-03-28 | 遵义钛业股份有限公司 | Coarse TiCl4 filtering method |
-
2009
- 2009-12-24 CN CN2009103121740A patent/CN101745268B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5540907A (en) * | 1992-07-22 | 1996-07-30 | Kronos, Inc. | Process for preparing high solids content titanium dioxide suspension with a dechlorinating agent |
| CN1935667A (en) * | 2006-10-16 | 2007-03-28 | 遵义钛业股份有限公司 | Coarse TiCl4 filtering method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101745268A (en) | 2010-06-23 |
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