CN104771955A - Methanol two-stage filtration backwashing device - Google Patents
Methanol two-stage filtration backwashing device Download PDFInfo
- Publication number
- CN104771955A CN104771955A CN201410020315.2A CN201410020315A CN104771955A CN 104771955 A CN104771955 A CN 104771955A CN 201410020315 A CN201410020315 A CN 201410020315A CN 104771955 A CN104771955 A CN 104771955A
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- methanol
- filter
- methyl alcohol
- outlet
- washing device
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Abstract
The invention belongs to the technical field of formaldehyde production and relates to a methanol two-stage filtration backwashing device. The device comprises a fiber filter with a methanol raw material inlet and a resin filter with a filtered methanol outlet. A methanol outlet of the fiber filter is connected to a methanol inlet of the resin filter. The fiber filter is provided with a methanol backwashing liquid inlet and a backwashing liquid outlet. Methanol is filtered by the fiber filter, then enters into the resin filter by a pipe and is filtered by the resin filter, and the filtrate is subjected to secondary filtration so that impurity content of methanol for formaldehyde production is greatly reduced and a catalyst life is prolonged. Through the backwashing liquid inlet and outlet arranged on the fiber filter, the fiber filter can be subjected to backwashing treatment so that purification efficiency is improved and a formaldehyde production cost is reduced.
Description
Technical field
The invention belongs to Formaldehyde Production technical field, be specifically related to a kind of methyl alcohol cascade filtration back washing device.
Background technology
Industrial formol is the aqueous solution containing formaldehyde 37 ~ 55% weight, be through methyl alcohol be the important basic chemical raw materials product that raw material is produced.In world's basic organic chemical raw material, a kind of very important large chemical products of this purport.As Organic Chemicals, formaldehyde is mainly for the production of Organic chemical products such as thermosetting resin and butanediol, MDI (toluene diisocyanate) and polyformaldehyde.Be widely used in chemical industry, medicine, weaving, timber processing and Furniture manufacturing.According to the prediction of brainstrust to future, the exploitation of formaldehyde downstream product can promote formaldehyde industrial expansion further.
Owing to containing the iron ion of impurity and trace in methanol feedstock, this impurity and iron ion produce the catalyst for electrolytic silver of formaldehyde activity to methanol oxidation dehydriding has a great impact.At present, national and foreign standards is not all made stipulations to iron ion content in methyl alcohol, manufacturing enterprise can only research and develop corresponding filtering and removing device voluntarily, trace iron ion in methyl alcohol is filtered, removed, with the life-span of extending catalyst, improve catalytic efficiency, reduce production cost, but still do not have a kind of effective filter to filter the impurity in raw material and iron ion at present.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above and a kind of methyl alcohol cascade filtration back washing device that can remove impurity and free iron in methyl alcohol is provided.
For achieving the above object, the present invention adopts following technical scheme:
A kind of methyl alcohol cascade filtration back washing device, comprise the resin filter of the fabric filter with methanol feedstock import and the methanol outlet after there is filtration, the methanol outlet of described fabric filter connects the methyl alcohol import of described resin filter by pipeline, described fabric filter is provided with the import of methyl alcohol backwash liquor and backwash liquor outlet.
Described fibrous filter layer comprises filtering tank and is located at the glass fibre filtering layer in described filtering tank.
Electromagnetism ring is provided with in the methanol feedstock import of described fabric filter.
The anion-exchange resin column that described resin filter comprises a body and is located in described body, is provided with the heating jacket being built in electric heater outside described body.
Top and/or the bottom of described anion-exchange resin column are provided with mini-sized blender.
The invention has the beneficial effects as follows: methyl alcohol is after fiber filter, and enter resin filter by pipeline and filter, through cascade filtration, the impurity content being used in the methyl alcohol of Formaldehyde Production reduces greatly, thus extends the life-span of catalyst; Meanwhile, by being arranged on backwash liquor import on fabric filter and backwash liquor outlet, backwash process being carried out to fabric filter, improves purification efficiency, reducing the production cost of formaldehyde.
Accompanying drawing explanation
Figure 1 shows that the structural representation of the methyl alcohol cascade filtration back washing device that the embodiment of the present invention provides.
Detailed description of the invention
Below, in conjunction with example, substantive distinguishing features of the present invention and advantage are further described, but the present invention is not limited to listed embodiment.
Shown in Figure 1, the figure shows the structure of a kind of methyl alcohol cascade filtration back washing device that the embodiment of the present invention provides.For convenience of explanation, illustrate only the part relevant with the embodiment of the present invention.
Refer to Fig. 1, a kind of methyl alcohol cascade filtration back washing device, comprise the methanol feedstock import 1 of fabric filter, methanol outlet 2 after fiber filter, the methanol outlet 2 of fabric filter passes through the methyl alcohol import 11 of pipeline 8 threaded tree grease filter, and described fabric filter is provided with methyl alcohol backwash liquor import 3 and backwash liquor outlet 4.
Described fabric filter comprises a tank body 7, is provided with fibrous filter layer 5 in described tank body 7.
Described fibrous filter layer 5 adopts filter-plate structure to be installed in described tank body 7, is convenient to dismounting.
Preferably, in the embodiment of the present invention, described fibrous filter layer 5 adopts glass fibre.
In the embodiment of the present invention, the top of described tank body 7 is provided with flanged cap head 6, is convenient for changing described fibrous filter layer like this and opens the cleaning that flanged cap head carries out in tank body.
In the embodiment of the present invention, further, electromagnetism ring (not shown) is provided with in described methyl alcohol import 1.By being provided with electromagnetism ring, the iron filings in methyl alcohol and other iron-based impurities effectively can be removed.
Upper cover 41, lower cover 51 that described resin filter comprises a body 61 and is tightly connected with the two ends up and down of described body 61, described upper cover 41 establishes described methyl alcohol import 11, described methanol outlet 21 is established in the side, tube wall bottom of described body 61, is provided with ion exchange resin column 31 in described body 61.
Described body 61 can adopt glass to make, and also can make by other material.
Described ion exchange resin column 31 can adopt the D390B anion exchange resin of Xi electricity group, the content of iron ion in methyl alcohol can be reduced to 0.3ppm after filtration.
Further, described upper cover 41, lower cover 51 pass through Flange joint with described body 61.
Further, be provided with outside described body 61 and carry out by electrical heating and/or conduction oil the heating jacket (not shown) that heats, can after described ion exchange resin column 31 uses a period of time, activate described ion exchange resin column 31 by heating mantle heats, recover filtering function and effect.
Further, top or the bottom of described ion exchange resin column 31 are provided with mini-sized blender (not shown), this mini-sized blender be arranged on described upper cover or under cover, by described mini-sized blender, bubble and impurity in methyl alcohol can be made to be easy to get rid of, thus to strengthen wash-out and regeneration treatment effect further.
Due to resin prevented from caking, bubble is easily discharged, and thus in methyl alcohol, the impurity such as free iron easily removes, and after metre filter of the present invention, enhances the effect of wash-out and reprocessing.
The invention has the beneficial effects as follows: methyl alcohol is after fiber filter, and enter resin filter by pipeline and filter, through cascade filtration, the impurity content being used in the methyl alcohol of Formaldehyde Production reduces greatly, thus extends the life-span of catalyst; Meanwhile, by being arranged on backwash liquor import on fabric filter and backwash liquor outlet, backwash process being carried out to fabric filter, improves purification efficiency, reducing the production cost of formaldehyde.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a methyl alcohol cascade filtration back washing device, it is characterized in that, comprise the resin filter of the fabric filter with methanol feedstock import and the methanol outlet after there is filtration, the methanol outlet of described fabric filter connects the methyl alcohol import of described resin filter by pipeline, described fabric filter is provided with methyl alcohol backwash import and backwash liquor outlet.
2. methyl alcohol cascade filtration back washing device according to claim 1, it is characterized in that, described fibrous filter layer comprises filtering tank and is located at the glass fibre filtering layer in described filtering tank.
3. methyl alcohol cascade filtration back washing device according to claim 2, is characterized in that, be provided with electromagnetism ring in the methanol feedstock import of described fabric filter.
4. methyl alcohol cascade filtration back washing device according to claim 3, is characterized in that, the anion-exchange resin column that described resin filter comprises a body and is located in described body, is provided with the heating jacket being built in electric heater outside described body.
5. methyl alcohol cascade filtration back washing device according to claim 4, it is characterized in that, top and/or the bottom of described anion-exchange resin column are provided with mini-sized blender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410020315.2A CN104771955A (en) | 2014-01-15 | 2014-01-15 | Methanol two-stage filtration backwashing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410020315.2A CN104771955A (en) | 2014-01-15 | 2014-01-15 | Methanol two-stage filtration backwashing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104771955A true CN104771955A (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410020315.2A Pending CN104771955A (en) | 2014-01-15 | 2014-01-15 | Methanol two-stage filtration backwashing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104771955A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112108267A (en) * | 2020-09-22 | 2020-12-22 | 吕永华 | Combined filtering equipment for methanol production |
-
2014
- 2014-01-15 CN CN201410020315.2A patent/CN104771955A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112108267A (en) * | 2020-09-22 | 2020-12-22 | 吕永华 | Combined filtering equipment for methanol production |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150715 |