CN109126636A - A kind of ethylene oxide feeding method - Google Patents
A kind of ethylene oxide feeding method Download PDFInfo
- Publication number
- CN109126636A CN109126636A CN201811009659.8A CN201811009659A CN109126636A CN 109126636 A CN109126636 A CN 109126636A CN 201811009659 A CN201811009659 A CN 201811009659A CN 109126636 A CN109126636 A CN 109126636A
- Authority
- CN
- China
- Prior art keywords
- ethylene oxide
- feeding method
- reaction kettle
- coil pipe
- aperture
- 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.)
- Pending
Links
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 239000000243 solution Substances 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 5
- 239000010935 stainless steel Substances 0.000 claims abstract description 5
- 239000011261 inert gas Substances 0.000 claims abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 5
- 235000019253 formic acid Nutrition 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000013064 chemical raw material Substances 0.000 description 5
- FFYTTYVSDVWNMY-UHFFFAOYSA-N 2-Methyl-5-nitroimidazole Chemical compound CC1=NC=C([N+]([O-])=O)N1 FFYTTYVSDVWNMY-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000000640 hydroxylating effect Effects 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Epoxy Compounds (AREA)
Abstract
The invention discloses a kind of ethylene oxide feeding method, including step 1, coil pipes；Step 2, aperture；Step 3, installation；Step 4, displacement；Step 5, pressurization；Step 6, feeding；Stainless steel straight tube is changed to plate-like, it is located at the aperture that reaction kettle interior section uniformly opens up certain amount on coil pipe, steel cylinder equipped with ethylene oxide is connect with high-pressure plunger pump one end, the other end of high-pressure plunger pump is connect with coil pipe one end, it will be connected to inside the coil pipe other end and reaction kettle, will be replaced inside reaction kettle using inert gas；It pressurizes to the ethylene oxide in steel cylinder, finally it is passed through ethylene oxide, this method, accelerate rate of feeding using a kind of method of the porous injection of adding pressure type, it reacts in spurting and 2- 5-nitro imidazole solution, expand the contact area of ethylene oxide and 2- 5-nitro imidazole solution, to achieve the purpose that increase its chemical conversion rate.
Description
Technical field
It feeds intake technical field the present invention relates to ethylene oxide, specially a kind of ethylene oxide feeding method.
Background technique
Ethylene oxide is a kind of low pressure liquefied gas, is liquid under certain temperature and pressure, when with miscellaneous stipulations
Chemical raw material contact can occur chemical reaction moment and generate purpose product, and ethylene oxide directly enters from the nozzle that diameter is 15 ㎜
It reacts your bottom and hydroxylating occurs for 2- 5-nitro imidazole solution, due to ethylene oxide in kettle and 2- methyl -5-
Nitroimidazole solution contacts only one point, and contact area is too small, and nozzle diameter is too big, and pressure is inadequate, only small part epoxy
Ethane occurs hydroxylating and generates purpose product, and rest part becomes solution surface in gaseous volatilization to kettle at high temperature, and
The vapor of solution surface, which reacts, generates other substances, and ideal effect is not achieved in the conversion ratio of such ethylene oxide.
Summary of the invention
The purpose of the present invention is to provide a kind of ethylene oxide feeding methods, to solve mentioned above in the background art ask
Topic.
In order to solve the above technical problem, the present invention provides following technical solutions: a kind of ethylene oxide feeding method, including
Step 1, coil pipe；Step 2, aperture；Step 3, installation；Step 4, displacement；Step 5, pressurization；Step 6, feeding；
In said step 1, stainless steel straight tube is changed to plate-like；
In the step 2, the aperture that reaction kettle interior section uniformly opens up certain amount is located on coil pipe；
In the step 3, installation the following steps are included:
1) steel cylinder equipped with ethylene oxide is connect with high-pressure plunger pump one end；
2) other end of high-pressure plunger pump is connect with coil pipe one end；
3) it will be connected to inside the coil pipe other end and reaction kettle；
In the step 4, it will be replaced inside reaction kettle using inert gas；
In the step 5, pressurize to the ethylene oxide in steel cylinder；
In the step 6, it is passed through ethylene oxide.
According to the above technical scheme, the coil pipe in the step 1 at least haves three layers.
According to the above technical scheme, in the step 2 aperture be divided into downwards, outwardly and inwardly several different directions, and
The diameter and coil diameter ratio of aperture are 2:15.
According to the above technical scheme, reaction kettle capacity is 2000L in the step 3, and inside is substantially dissolved in sulfuric acid
With the 2- 5-nitro imidazole solution in the mixed solution of formic acid.
According to the above technical scheme, it is at least replaced 3 times in the step 4 using nitrogen.
According to the above technical scheme, pressure is not less than 0.3MPA when the step 5 ethylene oxide pressurizes.
According to the above technical scheme, temperature range is 90 DEG C -95 DEG C in the step 6.
According to the above technical scheme, it is previously provided with the mixed solution of sulfuric acid and formic acid in the reaction kettle, adds 2-
5-nitro imidazole starts agitating paddle, and temperature, which rises to 90 DEG C, dissolves it sufficiently.
Compared with prior art, the beneficial effects obtained by the present invention are as follows being: the invention is with a kind of low pressure liquefied gas ring
Oxidative ethane is raw material, accelerates the flow velocity of ethylene oxide with the mode of pressurization, by opening the pipeline of foraminate plate-like, with injection
Mode contacts the chemical raw material of miscellaneous stipulations, for increase ethylene oxide and miscellaneous stipulations chemical raw material contact area, in coil pipe
On be provided with the apertures of certain amount different directions, such ethylene oxide can in the range of larger area moment and miscellaneous stipulations
Chemical raw material chemically react, generate purpose product, reduce ethylene oxide gasification after be converted to other substances.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is ethylene oxide injection schematic diagram；
Fig. 2 is three-dimensional flow chart of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2: a kind of ethylene oxide feeding method, including step 1, disk
Pipe；Step 2, aperture；Step 3, installation；Step 4, displacement；Step 5, pressurization；Step 6, feeding；
In step 1, stainless steel straight tube is changed to plate-like；
In step 2, the aperture that reaction kettle interior section uniformly opens up certain amount is located on coil pipe；
In step 3, installation the following steps are included:
1) steel cylinder equipped with ethylene oxide is connect with high-pressure plunger pump one end；
2) other end of high-pressure plunger pump is connect with coil pipe one end；
3) it will be connected to inside the coil pipe other end and reaction kettle；
In step 4, it will be replaced inside reaction kettle using inert gas；
In step 5, pressurize to the ethylene oxide in steel cylinder；
In step 6, it is passed through ethylene oxide.
According to the above technical scheme, the coil pipe in step 1 at least haves three layers.
According to the above technical scheme, aperture is divided into downward, outwardly and inwardly several different directions, and aperture in step 2
Diameter and coil diameter ratio be 2:15.
According to the above technical scheme, reaction kettle capacity is 2000L in step 3, and inside is substantially dissolved in sulfuric acid and first
2- 5-nitro imidazole solution in the mixed solution of acid.
According to the above technical scheme, it is at least replaced 3 times in step 4 using nitrogen.
According to the above technical scheme, pressure is not less than 0.3MPA when step 5 ethylene oxide pressurizes.
According to the above technical scheme, temperature range is 90 DEG C -95 DEG C in step 6.
According to the above technical scheme, it is previously provided with the mixed solution of sulfuric acid and formic acid in reaction kettle, adds 2- methyl-
5- nitroimidazole starts agitating paddle, and temperature, which rises to 90 DEG C, dissolves it sufficiently.
Based on above-mentioned, it is an advantage of the current invention that it is of the invention, the stainless steel tube entered in reaction will be changed to plate-like, in disk
Pipe opens the aperture of certain amount above, aperture point downwards, outwardly and inwardly several different directions, can thus increase epoxy second
The contact area of alkane and 2- 5-nitro imidazole solution, diameter and the coil pipe that the aperture in kettle is entered due to ethylene oxide are straight
Diameter ratio is 2:15, this pressure for entering epoxy second fan in kettle increases, and is sent out in spurting and 2- 5-nitro imidazole solution
Chemistry can occur for raw reaction, such ethylene oxide instead by the chemical raw material of moment and miscellaneous stipulations in the range of larger area
It answers, generates purpose product, be converted to other substances after reducing ethylene oxide gasification.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
1. a kind of ethylene oxide feeding method, including step 1, coil pipe；Step 2, aperture；Step 3, installation；Step 4 is set
It changes；Step 5, pressurization；Step 6, feeding；It is characterized by:
In said step 1, stainless steel straight tube is changed to plate-like；
In the step 2, the aperture that reaction kettle interior section uniformly opens up certain amount is located on coil pipe；
In the step 3, installation the following steps are included:
1) steel cylinder equipped with ethylene oxide is connect with high-pressure plunger pump one end；
2) other end of high-pressure plunger pump is connect with coil pipe one end；
3) it will be connected to inside the coil pipe other end and reaction kettle；
In the step 4, it will be replaced inside reaction kettle using inert gas；
In the step 5, pressurize to the ethylene oxide in steel cylinder；
In the step 6, it is passed through ethylene oxide.
2. a kind of ethylene oxide feeding method according to claim 1, it is characterised in that: the coil pipe in the step 1 is extremely
It haves three layers less.
3. a kind of ethylene oxide feeding method according to claim 1, it is characterised in that: aperture is divided into the step 2
Downwards, outwardly and inwardly several different directions, and the diameter of aperture and coil diameter ratio are 2:15.
4. a kind of ethylene oxide feeding method according to claim 1, it is characterised in that: reaction kettle holds in the step 3
Amount is 2000L, and there is the 2- 5-nitro imidazole solution being substantially dissolved in the mixed solution of sulfuric acid and formic acid in inside.
5. a kind of ethylene oxide feeding method according to claim 1, it is characterised in that: utilize nitrogen in the step 4
At least replace 3 times.
6. a kind of ethylene oxide feeding method according to claim 1, it is characterised in that: the step 5 ethylene oxide
Pressure is not less than 0.3MPA when pressurization.
7. a kind of ethylene oxide feeding method according to claim 1, it is characterised in that: temperature range in the step 6
It is 90 DEG C -95 DEG C.
8. a kind of ethylene oxide feeding method according to claim 4, it is characterised in that: preset in the reaction kettle
There is the mixed solution of sulfuric acid and formic acid, add 2- 5-nitro imidazole, starts agitating paddle, temperature, which rises to 90 DEG C, fills it
Divide dissolution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009659.8A CN109126636A (en) | 2018-08-31 | 2018-08-31 | A kind of ethylene oxide feeding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009659.8A CN109126636A (en) | 2018-08-31 | 2018-08-31 | A kind of ethylene oxide feeding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109126636A true CN109126636A (en) | 2019-01-04 |
Family
ID=64825839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811009659.8A Pending CN109126636A (en) | 2018-08-31 | 2018-08-31 | A kind of ethylene oxide feeding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109126636A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201783324U (en) * | 2010-06-25 | 2011-04-06 | 黄冈银河阿迪药业有限公司 | Ethylene oxide filling device of metronidazole hydroxylation reactor |
| US20130023700A1 (en) * | 2011-07-19 | 2013-01-24 | Basf Se | Process for a continuous production of polyetherols |
| CN205886880U (en) * | 2016-07-29 | 2017-01-18 | 湖南雅城新材料股份有限公司 | Reaction kettle feeding device |
| CN207371510U (en) * | 2017-09-20 | 2018-05-18 | 南通利奥化工科技有限公司 | A kind of chlorinating container convenient for leading to chlorine and clearing up |
-
2018
- 2018-08-31 CN CN201811009659.8A patent/CN109126636A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201783324U (en) * | 2010-06-25 | 2011-04-06 | 黄冈银河阿迪药业有限公司 | Ethylene oxide filling device of metronidazole hydroxylation reactor |
| US20130023700A1 (en) * | 2011-07-19 | 2013-01-24 | Basf Se | Process for a continuous production of polyetherols |
| CN205886880U (en) * | 2016-07-29 | 2017-01-18 | 湖南雅城新材料股份有限公司 | Reaction kettle feeding device |
| CN207371510U (en) * | 2017-09-20 | 2018-05-18 | 南通利奥化工科技有限公司 | A kind of chlorinating container convenient for leading to chlorine and clearing up |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190104 |
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| WD01 | Invention patent application deemed withdrawn after publication |