CN201372255Y - Formaldehyde preparation device - Google Patents
Formaldehyde preparation device Download PDFInfo
- Publication number
- CN201372255Y CN201372255Y CN200920042124U CN200920042124U CN201372255Y CN 201372255 Y CN201372255 Y CN 201372255Y CN 200920042124 U CN200920042124 U CN 200920042124U CN 200920042124 U CN200920042124 U CN 200920042124U CN 201372255 Y CN201372255 Y CN 201372255Y
- Authority
- CN
- China
- Prior art keywords
- formaldehyde
- tower
- absorption tower
- section
- preparation device
- 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 - Fee Related
Links
Images
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to the field of formaldehyde preparation device technology, particularly a formaldehyde preparation device which can reduce negative reaction but cannot reduce yield. The formaldehyde preparation device comprises an evaporator, a superheater, a fire retardant filter, a reactor, a combined absorption tower and a circulating pump. The combined absorption tower comprises a distillation absorption tower and a secondary absorption tower. The distillation absorption tower comprises a tower bottom section, a distillation section for separating formaldehyde, a transformation section, an absorption section and a tower top section from bottom to top. The fire retardant filter comprises a heating component, a flame arrester and a combined filter. A distributor is arranged in the transformation section. The utility model has the advantages of low transformation, long driving period, small system resistance, low current drain and energy consumption, long accelerant service life, low formaldehyde production and oxygen temperature control, small negative reaction, low requirements for system interference factors, and operation difficulty reduction. Moreover, after formaldehyde products are processed through distillation process, alcohol content in the products can achieve alcohol-free requirement and the formaldehyde products has high quality; the formaldehyde preparation device of the utility model has less parking times, consumes less formaldehyde, and can guarantee low material consumption.
Description
Technical field
The utility model relates to Formaldehyde Production device technique field, especially a kind ofly reduces the prepared formaldehyde device that negative reaction does not reduce productive rate.
Background technology
At present, the China silver method Formaldehyde Production was through more than 50 years courses of trials and hardship, all obtained great achievement in every respect, energy consumption is the air feed type outside consumption gas type changes into, material consumption is from 500kg methyl alcohol/T 37% formaldehyde 445kg methyl alcohol/T 37% formaldehyde till now, production capacity develops into more than 2,000 ten thousand tons of today from the hundreds of thousands of ton, and silver-colored method production production capacity and technology have been in rank first.Formaldehyde Production develops into the production that becomes more meticulous by extensive style, and to the road of career development, research is exactly to improve turnover ratio in technology and operation by simply.Present many factories manage in Formaldehyde Production, and formaldehyde process optimization, catalyst are selected for use and installed all and do well, but the material consumption level can only remain on about 445kg.In the product of producing methyl alcohol is controlled at 0.5 or do not have methyl alcohol, unit consumption is reduced part period turnover ratio improve, negative reaction is few, promptly as improving, then considers tail gas CO+CO
2, but negative reaction also increases synchronously in the process that improves the oxygen-methanol ratio turnover ratio, and the exhaust gas circulation process method is more obvious, along with the production cycle of driving prolongs, contains CO+CO in the increase tail gas of oxygen temperature
2Amount raises obvious more
The utility model content
The technical problems to be solved in the utility model is: shortcoming and deficiency in order to solve above-mentioned existence provide a kind of prepared formaldehyde device.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of prepared formaldehyde device, has vaporizer, superheater, fire-retardant filter, reactor, combined absorbing tower and recycle pump, combined absorbing tower is distillation absorption tower and two-level absorption tower, the distillation absorption tower comprises section at the bottom of the tower from bottom to top, be used for the isolating distilling period of methyl alcohol, transformation segment, absorber portion and tower top section, section is load-bearing at the bottom of the tower, absorbing gas is distributing, product liquid level operation control, distilling period is that methyl alcohol separates in the product, transformation segment is a transfer column, the gas-liquid conversion, liquid is distributing, liquid level control, and absorber portion is that product absorbs operation, tower top section is gas-liquid separation, liquid distribution, by the effect successively of single unit system, output formaldehyde finished product.
Further, in order to prolong the filter material life cycle, good filtration effect, fire-retardant filter comprises heating component, spark arrester and combined strainer, makes easy for installation.
In order to make circulation big, resistance is little, is evenly distributed, and transformation segment is provided with sparger.
The beneficial effects of the utility model are that prepared formaldehyde device of the present utility model is changed low; The driving cycle is long, and systemic resistance is little, and power consumption, energy consumption are low, and the catalyst life cycle is long; Formaldehyde Production, oxygen temperature control are low, and negative reaction is few, the system interference factor are required low, have reduced operation easier; Formaldehyde products contains pure amount and can reach no pure requirement, the quality height of formaldehyde products through distillation process in the product; Stop frequency is few, and the methyl alcohol of consumption is few, guarantees that material consumption is low; Do not increase tail gas and can produce high concentrated formaldehyde yet, make CO content 0.3% in the tail gas, CO
2Content 2.0%, pure content does not have in the formaldehyde, formic acid content≤0.01, unit consumption 430kg/T.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
1. vaporizers among the figure, 2. recycle pump, 3. distillation absorption tower, 4. two-level absorption tower, 5. section at the bottom of the tower, 6. distilling period, 7. transformation segment, 8. absorber portion, 9. tower top section.
Embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
The prepared formaldehyde device of preferred forms as shown in Figure 1, has vaporizer 1, superheater, fire-retardant filter, reactor, combined absorbing tower and recycle pump 2, combined absorbing tower is distillation absorption tower 3 and two-level absorption tower 4, distillation absorption tower 3 comprises section 5 at the bottom of the tower from bottom to top, be used for the isolating distilling period 6 of methyl alcohol, transformation segment 7, absorber portion 8 and tower top section 9, section 5 is load-bearing at the bottom of the tower, absorbing gas is distributing, product liquid level operation control, distilling period 6 is that methyl alcohol separates in the product, transformation segment 7 is a transfer column, the gas-liquid conversion, liquid is distributing, liquid level control, and absorber portion 8 absorbs operation for product, tower top section 9 is gas-liquid separation, liquid distribution, by the effect successively of single unit system, output formaldehyde finished product.
Fire-retardant filter comprises heating component, spark arrester and combined strainer, has prolonged the filter material life cycle, and good filtration effect makes easy for installationly, and transformation segment 7 is provided with sparger, makes circulation big, and resistance is little, is evenly distributed.
Methyl alcohol of the present invention is squeezed into by methanol pump from the methyl alcohol scale tank and is entered methanol evaporator 1 bottom, it is preceding by the variable valve dominant discharge to enter methanol evaporator 1, enter a certain amount of air that brings by gas blower from vaporizer 1 bottom simultaneously, with the methyl alcohol in formaldehyde circulation fluid and the steam indirect heating vaporizer 1 and the binary mixture of air, then binary mixture adds a certain amount of saturated vapor after scum dredger is removed droplet from the top, be made into methyl alcohol with finite concentration proportioning, the three-element mixed gas body of air and water vapor, the three-element mixed gas body enters superheater, heat by steam, to 110 ℃ after fire-retardant filter enter in the oxidizer that is incorporated with catalyzer after filtering, under 610 ℃ of high temperature, carry out methanol oxidation by catalyst layer from top to bottom and close deoxygenation, generation has the gas of formaldehyde, the gas that generates gathers cold by extremely cold section of oxidizer rapidly, then it being sent into first grade absorption tower absorbs, the finished product that will contain formaldehyde enters the dealcoholysis device and carries out aldehyde, alcohol separates, alcohol is stayed and is entered vaporizer 1 use in the system after treatment, aldehyde is that finished product enters the formaldehyde test tank, remainder enters two-level absorption tower 4 and absorbs, the rare aldehyde liquid that absorbs is got with pump, part self-circulation in tower absorbs, a part enters the one-level tower and is used for replenishing absorption liquid, the unabsorbed tail gas in two-level absorption tower 4 tops is sent in the treater and is burnt, liberated heat produces steam indirectly, but the steam plenum system uses outward.
With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification sheets, must determine its technical scope according to the claim scope.
Claims (3)
1. prepared formaldehyde device, have vaporizer (1), superheater, fire-retardant filter, reactor, combined absorbing tower and recycle pump (2), it is characterized in that: combined absorbing tower is distillation absorption tower (3) and two-level absorption tower (4), distills absorption tower (3) and comprises section (5) at the bottom of the tower from bottom to top, is used for the isolating distilling period of methyl alcohol (6), transformation segment (7), absorber portion (8) and tower top section (9).
2. prepared formaldehyde device according to claim 1 is characterized in that: described fire-retardant filter comprises heating component, spark arrester and combined strainer.
3. methyl alcohol preparation facilities according to claim 1 is characterized in that: described transformation segment (7) is provided with sparger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920042124U CN201372255Y (en) | 2009-03-24 | 2009-03-24 | Formaldehyde preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920042124U CN201372255Y (en) | 2009-03-24 | 2009-03-24 | Formaldehyde preparation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372255Y true CN201372255Y (en) | 2009-12-30 |
Family
ID=41498342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920042124U Expired - Fee Related CN201372255Y (en) | 2009-03-24 | 2009-03-24 | Formaldehyde preparation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201372255Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351670A (en) * | 2011-07-28 | 2012-02-15 | 福建省永安林业(集团)股份有限公司 | Method for producing formaldehyde by using urea-formaldehyde distillate in participation and absorption mode |
| CN107778272A (en) * | 2017-11-02 | 2018-03-09 | 王建玲 | A kind of method and apparatus that hemiacetal is produced using alcohol dehydrogenase |
-
2009
- 2009-03-24 CN CN200920042124U patent/CN201372255Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102351670A (en) * | 2011-07-28 | 2012-02-15 | 福建省永安林业(集团)股份有限公司 | Method for producing formaldehyde by using urea-formaldehyde distillate in participation and absorption mode |
| CN102351670B (en) * | 2011-07-28 | 2013-11-06 | 福建省永安林业(集团)股份有限公司 | Method for producing formaldehyde by using urea-formaldehyde distillate in participation and absorption mode |
| CN107778272A (en) * | 2017-11-02 | 2018-03-09 | 王建玲 | A kind of method and apparatus that hemiacetal is produced using alcohol dehydrogenase |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102320942B (en) | Production process and device of formaldehyde | |
| CA1160974A (en) | Continuous fermenter and reactor | |
| CN102399130B (en) | Method for simplifying rectification process for preparing ethanol through hydrogenation of acetic acid | |
| CN101260032B (en) | Modified technique for preparing acrylic acid by propylene two-step oxygenation method | |
| CN101735181A (en) | Pollution-free energy-saving new process for producing furfural, acetic acid and active carbon | |
| CN102321059B (en) | Production process and production device of phthalic anhydride | |
| CN110171804B (en) | Hydrogen production and purification integrated device and use method | |
| CN103113187A (en) | Method for producing ethanol and coproducing ethyl acetate with acetic acid | |
| CN108658225B (en) | Rural sewage reinforced composite anaerobic treatment device and treatment method | |
| CN101508633A (en) | Process and apparatus for preparing methanal with low transformational cycle method | |
| CN201372255Y (en) | Formaldehyde preparation device | |
| CN101759534A (en) | Formaldehyde prepration process and device | |
| CN201713454U (en) | Formaldehyde preparation device | |
| CN105907481A (en) | Alternating serial reaction device for producing biodiesel from high-pressure gas-phase methanol | |
| CN202246481U (en) | Formaldehyde production device with low conversion rate and high yield | |
| CN201770629U (en) | Device for preparing alcohol-free formaldehyde with high concentration | |
| CN102603486A (en) | Method for preparing cyclopentanol from cyclopentene | |
| CN206188686U (en) | Device of butyraldehyde oxidation preparation butyric acid | |
| CN101550073B (en) | Equipment for producing high concentration dealcoholization formaldehyde and production technology thereof | |
| CN102381949B (en) | Low-conversion-rate high-yield formaldehyde production technology and device thereof | |
| CN102617309A (en) | Process for preparing acetaldehyde | |
| CN201751409U (en) | Stack gas circulating device | |
| CN101544550B (en) | Formaldehyde absorbing tower dealcoholizing technology | |
| CN202849287U (en) | Formaldehyde reaction system | |
| CN111167378B (en) | Method for producing n-propyl acetate by continuous two-stage esterification reaction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU KAIMAO CHEMICAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: JIANGSU HENGMAO MACHINERY MANUFACTURE CO., LTD. Effective date: 20140429 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 213169 CHANGZHOU, JIANGSU PROVINCE TO: 214000 WUXI, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140429 Address after: Xuelang Street Ge Dai Binhu District of Jiangsu Province in 214000 communities in Wuxi City Patentee after: Jiangsu Kaimao Chemical Technology Co., Ltd. Address before: 213169, Jiangsu province Changzhou city Wujin District snow town industrial concentration area Patentee before: Jiangsu Hengmao Machine Manufacture Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20180324 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |