CN201406390Y - Dealcoholized high-concentration formaldehyde production equipment - Google Patents
Dealcoholized high-concentration formaldehyde production equipment Download PDFInfo
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- CN201406390Y CN201406390Y CN2009200248694U CN200920024869U CN201406390Y CN 201406390 Y CN201406390 Y CN 201406390Y CN 2009200248694 U CN2009200248694 U CN 2009200248694U CN 200920024869 U CN200920024869 U CN 200920024869U CN 201406390 Y CN201406390 Y CN 201406390Y
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- formaldehyde
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Abstract
The utility model relates to dealcoholized high-concentration formaldehyde production equipment. The existing production equipment is used and a formaldehyde absorption tower is designed as four layers. A formaldehyde gas pipe is arranged between the bottom of an oxidation reactor and the bottom of a dealcoholization tower. Two control valves are respectively arranged on the formaldehyde gas pipearranged between the bottom of an oxidation reactor and the bottom of a dealcoholization tower and a formaldehyde gas pipe arranged between the oxidation reactor and the formaldehyde absorption tower.The methanol is added into a methanol evaporator from a methanol inlet. The methanol passes through a methanol absorption tower, is heated in the methanol evaporator and becomes methanol gas. The methanol gas passes through a superheater and a filter and enters the oxidation reactor for reaction. The methanol gas becomes formaldehyde gas containing the methanol. The formaldehyde gas containing the methanol respectively enters the dealcoholization tower and the formaldehyde absorption tower through the formaldehyde gas pipes. The concentration of the obtained formaldehyde is 60 to 65 percent.The utility model has the advantages that the oxidization reaction is full, the content of the methanol in the product can be controlled, the concentration of the formaldehyde is high, the methanol consumption per ton formaldehyde is low and the production cost of the product is low.
Description
Technical field
The utility model relates to a kind of Formaldehyde Production equipment, especially a kind of dealcoholysis high-concentration formaldehyde production unit.
Background technology
The comparatively general problem that existing Formaldehyde Production equipment exists is, the oxidation reactor diameter is less, do not have special dealcoholization device, superheater is horizontally-arranged, the strainer useful area is less, the device for recovering tail gas poor performance, above-mentioned reason causes oxidizing reaction insufficient, the bad control of methanol content in the product, concentration of formaldehyde can only remain on below 40%, the methyl alcohol unit consumption amount of ton formaldehyde is minimum to be 435 kilograms, makes that the products production cost is too high.
Use the patented product " a kind of Formaldehyde Production equipment " of the patent No. as ZL200620088193.1, the concentration of formaldehyde of producing can reach 45%, methanol content is adjustable between 0.5-10% in the product, and the methyl alcohol unit consumption amount of ton formaldehyde can reach below 430 kilograms, and the tail gas recycle utilization ratio improves greatly.But concentration of formaldehyde is still undesirable.
Summary of the invention
At the deficiencies in the prior art, the utility model provide a kind of reasonable in design, simple in structure, oxidizing reaction fully, the dealcoholysis high-concentration formaldehyde production unit that methyl alcohol unit consumption amount is low, the products production cost is low of methanol content may command, concentration of formaldehyde height, ton formaldehyde in the product.
A kind of dealcoholysis high-concentration formaldehyde production unit, comprise oxidation reactor, methanol evaporator, superheater, strainer, dealcoholize column and formaldehyde absorbing tower, said apparatus is connected with pressure pump is interrelated by pipeline, valve, be characterised in that, formaldehyde absorbing tower is set to four layers, between oxidation reactor bottom and dealcoholize column bottom a formaldehyde windpipe road is set.
On the formaldehyde windpipe road between oxidation reactor bottom and the dealcoholize column bottom and on the formaldehyde windpipe road between oxidation reactor and the formaldehyde absorbing tower by-pass valve control is being set respectively.
Utilize the technology of the utility model production dealcoholysis high-concentration formaldehyde to be:
Methyl alcohol adds methanol evaporator from the methyl alcohol import, and methyl alcohol becomes gas in methanol evaporator after the hot formaldehyde heating of formaldehyde absorbing tower; After becoming the further heating of methyl alcohol process superheater of gas, enter oxidation reactor by strainer; By the oxidation reactor reaction, the methyl alcohol pneumatolytic is the formaldehyde gas that contains methyl alcohol; The formaldehyde gas that contains methyl alcohol enters dealcoholize column and formaldehyde absorbing tower by the formaldehyde windpipe road that has by-pass valve control respectively; Enter the formaldehyde gas of dealcoholize column, after the dealcoholysis, methyl alcohol gas is by the extraction of methyl alcohol extraction mouth; The formaldehyde pneumatolytic is a liquid formaldehyde, and by the extraction of formaldehyde extraction mouth; By interchanger, the temperature of control dealcoholize column bottom is at 78-80 degree centigrade, and the temperature at dealcoholize column top fully removes methyl alcohol at 63-69 degree centigrade, obtains the formaldehyde that concentration is 60-65%; Enter the formaldehyde gas of formaldehyde absorbing tower, control the undermost temperature of formaldehyde absorbing tower at 80-85 degree centigrade by interchanger, methyl alcohol in the formaldehyde gas is not absorbed, formaldehyde gas absorbs through formaldehyde absorbing tower, become formaldehyde liquid, formaldehyde liquid flows into the formaldehyde absorbing tower bottom, by the extraction of formaldehyde extraction mouth; The formaldehyde liquid that part contains methyl alcohol enters dealcoholize column from the formaldehyde absorbing tower second layer, dealcoholysis once more, and formaldehyde is by the extraction of formaldehyde extraction mouth.
Because equipment and production technique advanced person make the concentration of formaldehyde of product reach 60-65%, methanol content is adjustable between 0.5-10% in the product, and the methyl alcohol unit consumption amount of ton formaldehyde can reach below 430 kilograms.
The utlity model has reasonable in design, simple in structure, oxidizing reaction fully, the characteristics that methyl alcohol unit consumption amount is low, the products production cost is low of methanol content may command, concentration of formaldehyde height, ton formaldehyde in the product.
Four, description of drawings
Accompanying drawing is structure of the present utility model and process flow diagram.
Wherein, 1, oxidation reactor, 2, methanol evaporator, 3, strainer, 4, superheater, 5, dealcoholize column, 6, formaldehyde absorbing tower, 7, methyl alcohol extraction mouth, 8, formaldehyde extraction mouth, 9, interchanger, 10, air filter, 11, by-pass valve control, 12, formaldehyde windpipe road.
Five, embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Embodiment 1: a kind of dealcoholysis high-concentration formaldehyde production unit, comprise oxidation reactor 1, methanol evaporator 2, superheater 4, strainer 3, dealcoholize column 5 and formaldehyde absorbing tower 6, said apparatus is connected with pressure pump is interrelated by pipeline, valve, be characterised in that, formaldehyde absorbing tower 6 is set to four layers, between oxidation reactor 1 bottom and dealcoholize column 5 bottoms a formaldehyde windpipe road 12 is set.
On the formaldehyde windpipe road 12 between oxidation reactor 1 bottom and dealcoholize column 5 bottoms and on the formaldehyde windpipe road 12 between oxidation reactor 1 and the formaldehyde absorbing tower by-pass valve control 11 is being set respectively.
Utilize the technology of aforesaid device production dealcoholysis high-concentration formaldehyde as follows:
Methyl alcohol adds methanol evaporator 2 from the methyl alcohol import, and methyl alcohol heats through formaldehyde absorbing tower 6 hot formaldehyde in methanol evaporator 2 and becomes gases; After becoming the methyl alcohol process superheater 4 further heating of gas, enter oxidation reactor 1 by strainer 3; By oxidation reactor 1 reaction, the methyl alcohol pneumatolytic is the formaldehyde gas that contains methyl alcohol; The formaldehyde gas that contains methyl alcohol enters dealcoholize column and formaldehyde absorbing tower by the formaldehyde windpipe road 12 that has by-pass valve control 11 respectively; Enter the formaldehyde gas of dealcoholize column 5, after the dealcoholysis, methyl alcohol gas is by 7 extraction of methyl alcohol extraction mouth; The formaldehyde pneumatolytic is a liquid formaldehyde, and by 8 extraction of formaldehyde extraction mouth; By interchanger 9, the temperature of control dealcoholize column 5 bottoms is at 78-80 degree centigrade, and the temperature at dealcoholize column 5 tops fully removes methyl alcohol at 63-69 degree centigrade, obtains the formaldehyde that concentration is 60-65%; Enter the formaldehyde gas of formaldehyde absorbing tower 6, control formaldehyde absorbing towers 6 undermost temperature at 80-85 degree centigrade by interchanger 9, methyl alcohol in the formaldehyde gas is not absorbed, formaldehyde gas absorbs through formaldehyde absorbing tower 6, become formaldehyde liquid, formaldehyde liquid flows into formaldehyde absorbing tower 6 bottoms, by the extraction of formaldehyde extraction mouth; The formaldehyde liquid that part contains methyl alcohol enters dealcoholize column 5 from formaldehyde absorbing tower 6 second layers, dealcoholysis once more, and formaldehyde is by 8 extraction of formaldehyde extraction mouth.
Claims (2)
1 one kinds of dealcoholysis high-concentration formaldehyde production units, comprise oxidation reactor, methanol evaporator, superheater, strainer, dealcoholize column and formaldehyde absorbing tower, said apparatus is connected with pressure pump is interrelated by pipeline, valve, it is characterized in that, formaldehyde absorbing tower is set to four layers, between oxidation reactor bottom and dealcoholize column bottom a formaldehyde windpipe road is set.
2, a kind of dealcoholysis high-concentration formaldehyde production unit as claimed in claim 1, it is characterized in that, on the formaldehyde windpipe road between oxidation reactor bottom and the dealcoholize column bottom and on the formaldehyde windpipe road between oxidation reactor and the formaldehyde absorbing tower by-pass valve control is being set respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200248694U CN201406390Y (en) | 2009-05-12 | 2009-05-12 | Dealcoholized high-concentration formaldehyde production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200248694U CN201406390Y (en) | 2009-05-12 | 2009-05-12 | Dealcoholized high-concentration formaldehyde production equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201406390Y true CN201406390Y (en) | 2010-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200248694U Expired - Lifetime CN201406390Y (en) | 2009-05-12 | 2009-05-12 | Dealcoholized high-concentration formaldehyde production equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN201406390Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295542A (en) * | 2011-07-01 | 2011-12-28 | 福建省永安林业(集团)股份有限公司 | Integrated utilization method of heat in formaldehyde production process |
| CN103086854A (en) * | 2013-02-26 | 2013-05-08 | 河北凯跃化工集团有限公司 | Method and device for reducing methanol content in formaldehyde process by silver method |
| CN107056593A (en) * | 2017-02-17 | 2017-08-18 | 唐山中浩化工有限公司 | A kind of production method and system of ultra-large formaldehyde |
| CN107501060A (en) * | 2017-08-24 | 2017-12-22 | 开封龙宇化工有限公司 | A kind of concentrated formaldehyde production technology |
-
2009
- 2009-05-12 CN CN2009200248694U patent/CN201406390Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295542A (en) * | 2011-07-01 | 2011-12-28 | 福建省永安林业(集团)股份有限公司 | Integrated utilization method of heat in formaldehyde production process |
| CN103086854A (en) * | 2013-02-26 | 2013-05-08 | 河北凯跃化工集团有限公司 | Method and device for reducing methanol content in formaldehyde process by silver method |
| CN103086854B (en) * | 2013-02-26 | 2015-05-13 | 河北凯跃化工集团有限公司 | Method and device for reducing methanol content in formaldehyde process by silver method |
| CN107056593A (en) * | 2017-02-17 | 2017-08-18 | 唐山中浩化工有限公司 | A kind of production method and system of ultra-large formaldehyde |
| CN107501060A (en) * | 2017-08-24 | 2017-12-22 | 开封龙宇化工有限公司 | A kind of concentrated formaldehyde production technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100217 Effective date of abandoning: 20090512 |
|
| RGAV | Abandon patent right to avoid regrant |