CN209602416U - A kind of production equipment removing formic acid in DMMn product - Google Patents
A kind of production equipment removing formic acid in DMMn product Download PDFInfo
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- CN209602416U CN209602416U CN201920093361.3U CN201920093361U CN209602416U CN 209602416 U CN209602416 U CN 209602416U CN 201920093361 U CN201920093361 U CN 201920093361U CN 209602416 U CN209602416 U CN 209602416U
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Abstract
The utility model belongs to the technical field of fine that coal chemical industry is converted to petrochemical industry, is related to a kind of production equipment and process for removing formic acid in DMMn product.Apparatus body includes primary flash system and caustic washing system.The utility model belongs to the field of fine chemical that coal chemical industry is converted to petrochemical industry, traditional handicraft uses solid base in process of production, resistance drop in equipment is larger and cannot remove the formic acid, formaldehyde and water contained in material, utility model device and method use liquid base that solid base is replaced to carry out production operation, it is verified through actual production, liquid alkaline can completely remove the formic acid in material, a small amount of formaldehyde and water can be also removed simultaneously, while also ensuring the stability of material and the continuous and steady operation of device.
Description
Technical field
The utility model belongs to the technical field of fine that coal chemical industry is converted to petrochemical industry, is related to a kind of removing DMMn
The production equipment of formic acid in product.
Background technique
The alcohol-ether fuel experimental rig of present utility model application people, mainly for the production of alcohol-ether fuel (DMMn) product, together
When can also produce the byproducts such as dimethoxym ethane, metaformaldehyde, designed capacity is 50,000 tons/year, and operating flexibility is 70~110%.This dress
Set mainly includes formaldehyde preparation unit, dimethoxym ethane preparation unit, metaformaldehyde synthesis unit and alcohol-ether fuel synthesis unit.
Formaldehyde preparation unit, as raw material, produces formaldehyde with methanol.Methanol and oxygen are under silver catalyst and 650 DEG C of high temperature
Dehydrogenation occurs, oxidation reaction generates formaldehyde gaseous mixture and generates the formalin of high concentration using absorption.
Dimethoxym ethane unit, as raw material, under the action of solid acid catalyst, by addition, is dehydrated instead with methanol and formaldehyde
Synthesizing dimethoxym ethane is answered, is then refining to obtain the dimethoxym ethane product of high concentration by processes such as flash distillation, rectifying again.
Metaformaldehyde synthesis unit is using the formaldehyde of formaldehyde unit processed production as raw material, in the effect of ionic-liquid catalyst
Lower progress TOX synthetic reaction generates TOX reaction gas, and since synthetic reaction is balanced reaction, TOX is dense in the TOX reaction gas of generation
Spend it is low, reaction gas need to by concentration, extraction, alkali cleaning, washing, a series of subtractive processes such as separate with extractant, finally obtain height
The metaformaldehyde product of concentration.
Alcohol-ether fuel synthesis unit is using dimethoxym ethane and metaformaldehyde as raw material, using Chinese Academy of Sciences's Lanzhou Chemical Physics
The Novel solid-catalyst of research institute's recent development reacts under certain temperature and pressure, generate alcohol-ether fuel, then using
With reactants separate, the operation such as depickling, light component recycling obtains the alcohol-ether fuel product of high-purity.
Alcohol-ether fuel is the common name of a substance, and skeleton symbol can indicate are as follows: CH3O (CH2O) nCH3(n is more than or equal to 1
Integer), wherein with application value n value range are as follows: 1≤n≤8.There are two the alcohol ether products of alcohol ether Workshop Production, point
It is not DMM2 and DMMn, wherein 20132 tons of DMM2 annual output, 29940 tons of DMMn annual output.Original technology utilization solid base, In
Have the shortcomings that triviality and unreliability in operation.
Summary of the invention
The utility model proposes formic acid in the novel removing DMMn product of one kind for the problem of traditional handicraft
Production equipment and process.
In order to achieve the above object, the utility model is realized using following technical solutions:
A kind of production equipment removing formic acid in DMMn product, including apparatus body, the apparatus body include primary dodge
Steaming system and caustic washing system；
The primary flash system includes flash tank, flash distillation discharging cooler, and the caustic washing system includes entry mixers
With caustic treater；The flash tank is set between the DMMn reactor of system ontology and caustic treater, the flash tank and caustic treater
Between be provided with discharging cooler；Entry mixers, system sheet are provided between the flash tank discharging cooler and caustic treater
Body further includes alkali cleaning top by flow container, and the caustic treater is set to flash tank and alkali cleaning top by between flow container.
Preferably, the system ontology further includes that benefit alkali line and salkali waste flow container, the entry mixers are gone out by flash tank
Material cooler outlet is connected with entry mixers, and the entry mixers branch mouth and the discharging of caustic treater bottom connect, the charging
Mixer branch mouth is connect with alkali line is mended, and the caustic treater bottom discharging is divided into two-way, is gone entry mixers all the way, is removed spent lye all the way
Tank, the caustic treater ejection material are connect with alkali cleaning top by flow container.
Preferably, the flash tank gas phase is connected with flash distillation the first cooler of tower top, the discharging of flash tank bottom and discharging are cold
But device connects, and discharging cooler outlet removes caustic washing system.
The production technology that formic acid in DMMn product is removed using above equipment, is included the following steps,
(1) carry out the material of autoreactor after flash tank flashes, top gas phase enters light component recycling, and bottom is passed through through pump
Cooler is cooled to 40 DEG C, then send after mixer to caustic treater；
(2) it will uniformly be mixed according to a certain percentage with lye by mixer from the discharging of flash tank bottom, bottom spent lye
It is pumped to salkali waste flow container by machine, top discharge to alkali cleaning top is by flow container.
Preferably, the liquidometer pressure of the flash tank, is no more than 100KPa, discharging cooler outlet temperature is not higher than
50℃；Liquid level is not less than 50% before caustic treater is fed, and opens lye circulation, lye is kept not less than molar fraction 15% after charging
Low concentration alkali is discharged in operating process in time for concentration of lye, supplements concentrated base.
Compared with prior art, it the advantages of the utility model and has the active effect that
The utility model belongs to the field of fine chemical that coal chemical industry is converted to petrochemical industry, and traditional handicraft is in process of production
Using solid base, the resistance drop in equipment is larger and cannot remove the formic acid, formaldehyde and water contained in material, the utility model dress
It sets and replaces solid base to carry out production operation using liquid base with method, verified through actual production, liquid alkaline can completely remove material
Interior formic acid, while a small amount of formaldehyde and water can be also removed, while also ensuring the stability of material and the continuous-stable fortune of device
Row.
Detailed description of the invention
Fig. 1 is the flow path device schematic diagram of the utility model DMMn process units.
Each appended drawing reference are as follows: 100 flash tanks, 101 flash tank discharging pumps, 102 flash tanks discharging cooler, 103 match
Alkali entry mixers, 200 caustic treaters, 201 caustic treaters recycle discharging pump, 202 spent lye surge tanks, 203 salkali waste liquid pumps.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, below with reference to specific implementation
Example is described further the utility model.It should be noted that in the absence of conflict, embodiments herein and implementation
Feature in example can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other modes described herein are different from, therefore, the utility model is not limited to be described below
The limitation of the specific embodiment of specification.
Embodiment 1, as shown in Figure 1, the present embodiment provides DMMn process units specific structure and processing steps.Device includes
Primary flash system and caustic washing system.Primary flash system includes flash tank 100, flash distillation discharging cooler 102, flash tank 100
It is set between DMMn reactor and caustic treater 200, the flash tank discharging cooler 102 is set to flash tank 100 and alkali cleaning
Between tank 200, flash tank discharging pump 101 is set on flash tank discharging 102 entrance pipe of cooler；Caustic washing system include with alkali into
Expect mixer 103 and caustic treater 200, it is described to be set to flash tank discharging cooler 102 and caustic treater with alkali entry mixers 103
Between 200, the caustic treater 200 is set to flash tank 100 and alkali cleaning top by between flow container.Successively according to the structure in attached drawing 1
Primary flash system is connected with each device in caustic washing system.Entry mixers 103 are exported by flash tank discharging cooler 102
It is connected with entry mixers, entry mixers branch mouth and the discharging of 200 bottom of caustic treater connect, 103 mouths of entry mixers and benefit
The connection of alkali line, the discharging of 200 bottom of caustic treater are divided into two-way, go entry mixers 103 through caustic treater circulation discharging pump 201 all the way, and one
Spent lye (buffering) tank 202 is removed through salkali waste liquid pump 203 in road, and the ejection material of caustic treater 200 is connect with alkali cleaning top by flow container；Flash tank into
Material mouth and the discharging of DMMn reactor connect, and flash tank gas phase is connect with flash distillation the first cooler inlet of tower top.100 bottom of flash tank goes out
Material is connect with flash tank discharging cooler 102, and caustic washing system is removed in the outlet of flash tank discharging cooler 102.Flash tank feed inlet with
The discharging connection of DMMn reactor, flash tank gas phase are connect with flash distillation the first cooler inlet of tower top, the discharging of flash tank bottom and discharging
Cooler connection, cooler outlet remove caustic washing system.
The method for removing the production technology of formic acid in DMMn product using above-mentioned device, the specific steps are as follows:
(1) material (crude glycol ether: DMM2-10, formaldehyde, formic acid, water, DMM1) of autoreactor in future is flashed through flash tank
Afterwards, top gas phase enters light component (thick DMM1: formic acid, water, DMM1) recycling, and bottom (crude glycol ether) is cooling through cooler through pump
It send to 40 DEG C, then after mixer to caustic treater；
(2) it will uniformly be mixed according to a certain percentage with lye by mixer from flash tank bottom discharging (crude glycol ether), bottom
Portion's spent lye (low concentration) is pumped to salkali waste flow container by machine, and top discharge (crude glycol ether) to top is by flow container.
Above-mentioned steps need to meet following process conditions:
A. before driving, cooling equipment comes into operation cooling water；
B. when flash tank liquid level is up to 30%, starting pump feeds (crude glycol ether) to caustic treater；
C. add the lye of certain liquid level (50%) in caustic treater, and open self-loopa.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation is applied to other fields, but all without departing from the content of the technical scheme of the utility model, according to this reality
With novel technical spirit any simple modification, equivalent variations and remodeling to the above embodiments, it is practical new to still fall within this
The protection scope of type technical solution.
Claims (3)
1. a kind of production equipment for removing formic acid in DMMn product, including apparatus body, it is characterised in that: the apparatus body packet
Include primary flash system and caustic washing system；
The primary flash system includes flash tank, flash distillation discharging cooler, and the caustic washing system includes entry mixers and alkali
Cleaning of evaporator；The flash tank is set between the DMMn reactor of system ontology and caustic treater, between the flash tank and caustic treater
It is provided with discharging cooler；Entry mixers are provided between the flash tank discharging cooler and caustic treater, system ontology is also
Including alkali cleaning top by flow container, the caustic treater is set to flash tank and alkali cleaning top by between flow container.
2. removing the production equipment of formic acid in DMMn product according to claim 1, it is characterised in that: the system ontology
It further include mending alkali line and salkali waste flow container, the entry mixers are connected by flash tank discharging cooler outlet with entry mixers
It connects, the entry mixers branch mouth and the discharging of caustic treater bottom connect, and the entry mixers branch mouth is connect with alkali line is mended, the alkali
The discharging of cleaning of evaporator bottom is divided into two-way, goes entry mixers all the way, goes to salkali waste flow container, the caustic treater ejection material and alkali cleaning top all the way
It is connected by flow container.
3. removing the production equipment of formic acid in DMMn product according to claim 1, it is characterised in that: the flash tank gas
It is connected and is connected to the first cooler of flash column top, the discharging of flash tank bottom is connect with discharging cooler, and discharging cooler outlet goes alkali cleaning
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920093361.3U CN209602416U (en) | 2019-01-21 | 2019-01-21 | A kind of production equipment removing formic acid in DMMn product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920093361.3U CN209602416U (en) | 2019-01-21 | 2019-01-21 | A kind of production equipment removing formic acid in DMMn product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209602416U true CN209602416U (en) | 2019-11-08 |
Family
ID=68400212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920093361.3U Active CN209602416U (en) | 2019-01-21 | 2019-01-21 | A kind of production equipment removing formic acid in DMMn product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209602416U (en) |
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2019
- 2019-01-21 CN CN201920093361.3U patent/CN209602416U/en active Active
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