CN201351146Y - Absorption tower for formaldehyde - Google Patents
Absorption tower for formaldehyde Download PDFInfo
- Publication number
- CN201351146Y CN201351146Y CNU2009200190706U CN200920019070U CN201351146Y CN 201351146 Y CN201351146 Y CN 201351146Y CN U2009200190706 U CNU2009200190706 U CN U2009200190706U CN 200920019070 U CN200920019070 U CN 200920019070U CN 201351146 Y CN201351146 Y CN 201351146Y
- Authority
- CN
- China
- Prior art keywords
- water tank
- tower
- grid plate
- formaldehyde
- packing tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses an absorption tower for formaldehyde which simplifies the procedure of converting the hot formaldehyde gas to the formaldehyde finished product. The absorption tower comprises a water tank packing tower; wherein the lower part of the water tank packing tower is provided with a hot formaldehyde gas inlet; a layer of lower grid plate is arranged on the side wall in the cavity of the water tank packing tower above the hot formaldehyde gas inlet; packing is placed on the lower grid plate in the cavity of the water tank packing tower; a soft water tank is arranged in the packing above the lower grid plate, and arranged on the side wall in the cavity of the water tank packing tower; a cooling water tank is arranged on the side wall in the cavity of the water tank packing tower below the lower grid plate; a layer of upper grid plate is arranged on the side wall in the cavity of the water tank packing tower above the lower grid plate; packing is placed on the upper grid plate in the cavity of the water tank packing tower; a soft water tank is arranged in the packing above the upper grid plate and arranged on the side wall in the cavity of the water tank packing tower; and the soft water tank above the upper grid plate is communicated with the soft water tank above the lower grid plate. The cooling water tank and the soft water tanks are manufactured with aluminum materials.
Description
Technical field
The utility model relates to formaldehyde, relates in particular to a kind of formaldehyde absorbing tower.
Background technology
Formaldehyde Production is to be raw material with methyl alcohol, evaporates gasification by methyl alcohol in vaporizer, feeds water vapour again and air becomes ternary gas, enters the formaldehyde reaction device, does under the condition of catalyzer at silver (or iron molybdenum), is oxidized to formaldehyde.The purpose that feeds water vapour is that methyl alcohol is reacted with oxygen beyond its limits of explosion, with the security that guarantees to produce.
One, the proposition of problem:
Traditional Formaldehyde Production flow process is the hot formaldehyde gas that the silver catalyst layer, behind Quench cooling and recovery part heat, also have temperature to enter in the formaldehyde absorbing tower (also have minority with vertical sieve plate column etc.) at 80-100 ℃ the hot formaldehyde gas inlet of hot formaldehyde gas from the formaldehyde absorbing tower bottom, utilize a spot of water, spray circulation downwards from the top of formaldehyde absorbing tower and be absorbed as formalin, remaining hot formaldehyde gas is that tail gas goes out tower from cat head; Heat moved outside not when formaldehyde changed formalin into by hot formaldehyde gas in formaldehyde absorbing tower.60-70 ℃ formalin is discharged in the formaldehyde absorbing tower bottom, enters the board-like formaldehyde water cooler that stainless steel is made, and water cools, formalin after the cooling, part is returned the formaldehyde absorbing tower internal recycle and is absorbed, and reaches the finished product concentration requirement, and extraction is the formaldehyde finished product.
There is following drawback in this absorption cooling process in production practice:
(1) wholely change the absorption process of formalin into by hot formaldehyde gas, promptly in formaldehyde absorbing tower from cat head to tower at the bottom of, the absorption liquid temperature raises gradually, and does not have heat to move outward.So it is not high to absorb impellent, the tail gas control that goes out tower from cat head is bad, and the residual amount of formaldehyde is exceeded standard, the one, influence environment, and the 2nd, influence benefit.
(2) formalin of discharging from formaldehyde absorbing tower bottom, heat is not recycled, but with a large amount of water quench, the load of increase water coolant water cooling tower.Particularly at summer and plate cooler during because of the recirculated water fouling, formalin cooling difficulty in the plate cooler, and the high formalin of portion temperature in the plate cooler returns the absorption of formaldehyde absorbing tower internal recycle, just more cannot say for sure to demonstrate,prove assimilation effect, causes vicious cycle.
(3) formaldehyde absorbing tower and plate cooler are all made of stainless steel, cost an arm and a leg.
(4) plate-type heat exchanger uses recirculated cooling water very easily to deposit mud, fouling etc., deals with suitable trouble, has a strong impact on normally carrying out of production, and the cleaning one by one of must stopping consumes great amount of manpower and expense.
Summary of the invention
The purpose of this utility model provides a kind of formaldehyde absorbing tower that is changed into formaldehyde finished product flow process by hot formaldehyde gas of having simplified.
To achieve these goals, the technical scheme that the utility model is taked is: a kind of formaldehyde absorbing tower, comprising the water tank packing tower, water tank packing tower bottom has hot formaldehyde gas inlet, its characteristics are: on the water tank packing tower cavity inner side-wall of hot formaldehyde gas inlet top one deck lower grid plate is installed, be placed with filler on the lower grid plate in the water tank packing tower cavity, in the filler of lower grid plate top softened water tank is installed, softened water tank is installed on the water tank packing tower cavity inner side-wall, on the water tank packing tower cavity inner side-wall of lower grid plate below cooling water tank is installed.
On the water tank packing tower cavity inner side-wall of described lower grid plate top one deck top grating is installed, be placed with filler on the top grating in the water tank packing tower cavity, in the filler of top grating top softened water tank is installed, this softened water tank is installed on the water tank packing tower cavity inner side-wall, and the softened water tank of top grating top communicates with the softened water tank of described lower grid plate top.
Described cooling water tank and softened water tank material are aluminium.
The utility model has the advantages of and be: lower grid plate, top grating in the utility model are used for carrying the top filler weight.The utility model in use, below hot formaldehyde gas inlet is at the bottom of hot formalin accumulates in tower, in hot formalin, cooling water tank is installed, tower is equipped with liquidometer indication formalin liquid level outward, cooled formalin is discharged at the bottom of tower, enters next circulation and absorbs operation.
Go out the hot formaldehyde gas of formaldehyde reaction device, self-heating formaldehyde gas inlet enters in the utility model, rises by gas distribution, passes through packing layer and softened water tank successively, and the formaldehyde tail gas after being absorbed is discharged outside the tower after mist separates, and enters the tail gas boiler and does the fuel use.
Recovering condition according to tower temperature distribution and heat, go up most and feed cold soft water (can use refrigerated water summer) in one group of softened water tank, because temperature is low, as checking on of exhaust gas body temperature degree, again preheating soft water, this softened water tank soft water preheating of coming out enters the softened water tank of below certainly, the utility model in use, the sensible heat that absorbs heat, hot formaldehyde gas of the present utility model is absorbed cooling, and soft water is heated and sends into the oiler feed of boiler as heat simultaneously, with voluminous steam, energy-saving and cost-reducing.Next group is inserted at the bottom of the tower cooling water tank in the formalin and is fed recirculated cooling water and check on as the last cooling that goes out the tower formalin, and to guarantee favorable cooling effect, recirculated cooling water goes out tower and sends into the cold water system, recycles after the cooling.
The utility model thoroughly changes the drawback of former tower, and has reclaimed heat energy, and following advantage is arranged:
(1) the utility model is that the cooling of tower and energy recovery are combined, and has reached the purpose that good cooling results, heat energy were reclaimed, reduced the cold water expense.
(2) ortho-formaldehyde absorption tower and plate cooler are united two into one, simplified flow process, reduced facility investment, use the splendid aluminum pipe of heat-transfer effect as the heat exchange material, its heat-transfer effect is tens times of steel.Water tank has occupied the volume of Stainless Steel Helices in tower, also saved the investment of expensive stainless steel filler, and having broken formaldehyde plant can only be with the convention of stainless material.
(3) thermograde rationally in the utility model tower, the absorption impellent is big, assimilated efficiency is high, with the distribution of differing temps with different cooling measures, at any time shift out heat with the generation that absorbs heat, having broken formaldehyde absorbing tower all is the adiabatic history that absorbs, and is the breakthrough innovation that formaldehyde absorbs theory.
(4) thoroughly solving plate cooler uses recirculated water easily to stop up, use the difficult problem of an easy fouling of water, stopped because of the long-time situation of stopping and handling of cleaning plate cooler, guaranteed the long-term operation of producing, two groups of softened water tanks feed soft water on the design does not have blocking problem, next group cooling water tank is a circulating water cooling, if there is fouling not stop at any time, can under the ordinary production situation, open the water coolant case lid, separately cleaning.Tank lid in the utility model is that flange connects, and clears up separately for each joint and designs, and is easy to maintenance.
(5) aluminum radiator long service life can be used more than 10 years, and ten thousand yuan of the price 5-6 of a platen formula water cooler, and the aluminum radiator price has only about 20,000 yuan, and the aluminium cooling performance is than excellent many of stainless steel.The former full filling material resistance of whole tower resistance ratios is little, and turndown ratio is big, and mass transfer, heat-transfer effect are good.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further:
A kind of formaldehyde absorbing tower, as shown in Figure 1, comprising the water tank packing tower, water tank packing tower bottom has hot formaldehyde gas inlet, on the water tank packing tower cavity inner side-wall of hot formaldehyde gas inlet top one deck lower grid plate is installed, is placed with filler on the lower grid plate in the water tank packing tower cavity, in the filler of lower grid plate top softened water tank is installed, softened water tank is installed on the water tank packing tower cavity inner side-wall, on the water tank packing tower cavity inner side-wall of lower grid plate below cooling water tank is installed; In the present embodiment, on the water tank packing tower cavity inner side-wall of lower grid plate top one deck top grating is installed, be placed with filler on the top grating in the water tank packing tower cavity, in the filler of top grating top softened water tank is installed, this softened water tank is installed on the water tank packing tower cavity inner side-wall, and the softened water tank of top grating top communicates with the softened water tank of lower grid plate top; In the present embodiment, cooling water tank and softened water tank material are aluminium.
Claims (3)
1, a kind of formaldehyde absorbing tower, comprising water tank packing tower (1), water tank packing tower (1) bottom has hot formaldehyde gas inlet (5), it is characterized in that: on water tank packing tower (1) the cavity inner side-wall of hot formaldehyde gas inlet (5) top one deck lower grid plate (4) is installed, be placed with filler on the lower grid plate (4) in water tank packing tower (1) cavity, in the filler of lower grid plate (4) top softened water tank (2) is installed, softened water tank (2) is installed on water tank packing tower (1) the cavity inner side-wall, on water tank packing tower (1) the cavity inner side-wall of lower grid plate (4) below cooling water tank (6) is installed.
2, formaldehyde absorbing tower according to claim 1, it is characterized in that: on water tank packing tower (1) the cavity inner side-wall of described lower grid plate (4) top one deck top grating (3) is installed, be placed with filler on the top grating (3) in water tank packing tower (1) cavity, in the filler of top grating (3) top softened water tank (2) is installed, this softened water tank (2) is installed on water tank packing tower (1) the cavity inner side-wall, and the softened water tank (2) of top grating (3) top communicates with the softened water tank (2) of described lower grid plate (4) top.
3, formaldehyde absorbing tower according to claim 2 is characterized in that: described cooling water tank (6) is an aluminium with softened water tank (2) material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200190706U CN201351146Y (en) | 2009-02-11 | 2009-02-11 | Absorption tower for formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200190706U CN201351146Y (en) | 2009-02-11 | 2009-02-11 | Absorption tower for formaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201351146Y true CN201351146Y (en) | 2009-11-25 |
Family
ID=41374532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200190706U Expired - Lifetime CN201351146Y (en) | 2009-02-11 | 2009-02-11 | Absorption tower for formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201351146Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486633B (en) * | 2009-02-11 | 2012-04-18 | 王承信 | Formaldehyde absorbing tower |
-
2009
- 2009-02-11 CN CNU2009200190706U patent/CN201351146Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486633B (en) * | 2009-02-11 | 2012-04-18 | 王承信 | Formaldehyde absorbing tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201351146Y (en) | Absorption tower for formaldehyde | |
| CN101486633B (en) | Formaldehyde absorbing tower | |
| CN113091338B (en) | Reaction heat recycling system in formaldehyde production | |
| CN100400430C (en) | Energy saving, purifying and recovering process for urea process condensate | |
| CN108413783B (en) | A kind of and tower function heat exchanger | |
| CN201081559Y (en) | Integrated fume cleaning and waste heat recovery device | |
| CN203256303U (en) | Heat pipe heat-exchange equipment for cooling quenching oil and recycling residual heat of quenching oil | |
| CN202993142U (en) | Carbon plant waste heat power generation and heating system based on calcining furnace calcined coke waste heat recovery | |
| CN103243207B (en) | Heat pipe heat-exchange equipment for cooling quenching oil and recovering waste heat of quenching oil | |
| CN216538373U (en) | Final stage water transfer heat bed layer ammonia synthesis reactor | |
| CN202688235U (en) | Device for producing formaldehyde by methanol | |
| CN201207411Y (en) | Portable micro hydrogen source device for fuel cell | |
| CN101143807A (en) | Method for producing dimethyl ether by separating heat tube type reactor | |
| CN103331076A (en) | A mass and heat transfer device combining an absorbing tower and a heat exchanger and a preparation method of the mass and heat transfer device | |
| CN2280087Y (en) | Reactor for conversion sulfur oxides by use of heat pipe heat-exchange | |
| CN102952562B (en) | Petronaphthalene rectification reflux temperature control device and control method thereof | |
| CN202993141U (en) | Distributed waste heat boiler based on carbon plant calcining furnace calcined coke attached heat pipe heat exchange | |
| CN203030165U (en) | Absorption tower and heat exchanger combined mass and heat transfer device | |
| CN101560412B (en) | Conversion section front gas, heat, oil water separator | |
| CN201186210Y (en) | Vertical type water-cooling tube box type reactor | |
| CN114307869A (en) | Ammonia synthesis reactor | |
| CN216282856U (en) | Positive displacement exhaust steam heat recovery device | |
| CN201200885Y (en) | Membrane type wall-shell type reactor | |
| CN201421066Y (en) | Secondary steam generator of closed circulating phase change heat supply system of industrial boiler | |
| CN213060193U (en) | Gas-liquid heat exchanger for hydrogen production by methanol cracking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091125 Effective date of abandoning: 20090211 |