CN1803775A - Method for preparing 5,5-dimethylhydantion - Google Patents
Method for preparing 5,5-dimethylhydantion Download PDFInfo
- Publication number
- CN1803775A CN1803775A CN 200610038040 CN200610038040A CN1803775A CN 1803775 A CN1803775 A CN 1803775A CN 200610038040 CN200610038040 CN 200610038040 CN 200610038040 A CN200610038040 A CN 200610038040A CN 1803775 A CN1803775 A CN 1803775A
- Authority
- CN
- China
- Prior art keywords
- acetone cyanohydrin
- production method
- reactor
- ammoniacal liquor
- gas
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title description 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- MWFMGBPGAXYFAR-UHFFFAOYSA-N 2-hydroxy-2-methylpropanenitrile Chemical compound CC(C)(O)C#N MWFMGBPGAXYFAR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 11
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims description 8
- JJEJDZONIFQNHG-UHFFFAOYSA-N [C+4].N Chemical compound [C+4].N JJEJDZONIFQNHG-UHFFFAOYSA-N 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000376 reactant Substances 0.000 claims description 2
- 235000012538 ammonium bicarbonate Nutrition 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- YIROYDNZEPTFOL-UHFFFAOYSA-N 5,5-Dimethylhydantoin Chemical compound CC1(C)NC(=O)NC1=O YIROYDNZEPTFOL-UHFFFAOYSA-N 0.000 abstract 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 238000007664 blowing Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005262 decarbonization Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000035924 thermogenesis Effects 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The disclosed preparation method for 5, 5-dimethylhydantoin comprises: adding ammonia water and acetone cyanohydrin into the kettle for reaction; while starting the gas input valve of kettle and the connected gas output valve of condenser to lead NH4HCO3 converted gas into the kettle till there is no CN- in reaction material. This invention reduces device cost and CO2 waste, has some protection to environment, and improves production and economic benefit.
Description
Technical field:
The present invention relates to a kind of production method of 5,5 dimethyl hydantion.
Background technology:
Traditional dimethyl hydantion production technique, in 15% ammoniacal liquor, ammonia in molar ratio: acetone cyanohydrin=1: 0.9, drip acetone cyanohydrin at 10 ℃, 1/3 of adding ammonia molar weight bicarbonate of ammonia heats up and kept 20 minutes at 60 ℃ after adding, and adds the same bicarbonate of ammonia of measuring again and keeps 20 minutes, add same amount bicarbonate of ammonia at last and kept 20 minutes, the cooling blowing filters.Such technology utilization bicarbonate of ammonia adds thermogenesis CO
2, to waste ammonia wherein, and needed to open the reaction kettle cover in the operation, a large amount of ammonias come out.Cause environment abominable.
Summary of the invention:
The object of the present invention is to provide the environmental pollution of a kind of energy little, the production method of 5,5 dimethyl hydantion that production cost is low.
Technical solution of the present invention is:
A kind of 5, the production method of 5 dimethyl hydantion, it is characterized in that: comprise the following steps: in reactor, to add ammoniacal liquor, acetone cyanohydrin reacts, during reaction, open the gas input valve of reactor, and the gas delivery valve on unlatching and the condenser that reactor is connected, in reactor, feed carbon ammonium conversion gas, no cyanogen root to the reactant.
The mol ratio of ammoniacal liquor and acetone cyanohydrin is an ammoniacal liquor in the reaction raw materials: acetone cyanohydrin=1: 0.8.Acetone cyanohydrin is added drop-wise in the ammoniacal liquor under 30～40 ℃.Temperature of reaction is 60～70 ℃.The feeding speed of conversion gas is 3M
3/ minute.
The present invention makes full use of the CO in the conversion gas
2, reduced the cost of decarbonization device, reduced CO
2Waste, environment is played the certain protection effect, increased liquefied ammonia output, increased economic benefit.
The invention will be further described below in conjunction with embodiment.
Embodiment:
A kind of 5, the production method of 5 dimethyl hydantion, in reactor, add ammoniacal liquor, acetone cyanohydrin reacts, the mol ratio of ammoniacal liquor and acetone cyanohydrin is an ammoniacal liquor in the reaction raw materials: acetone cyanohydrin=1: 0.8, and acetone cyanohydrin is added drop-wise in the ammoniacal liquor under 30～40 ℃, add acetone cyanohydrin after, open the gas input valve of reactor, and the gas delivery valve on unlatching and the condenser that reactor is connected, (main component of conversion gas is: CO to feed carbon ammonium conversion gas in reactor
227%, H
255%, N
216%, CO 2%), the feeding speed of conversion gas is 3M
3/ minute, control reaction temperature is 60～70 ℃, flow quantity recorder feeds the total amount of conversion gas, feeds CO in the conversion gas
2After amount reached the molar weight of ammonia, whether sample examination had the cyanogen root, if any, continuing to feed conversion gas to check does not have the cyanogen root, after reaction finishes, closes and feeds valve, delivery valve, and the cooling blowing filters.The content that reaction finishes back conversion gas is CO
22%, H
273%, N
222%, CO3% send the carbon ammonium behind the refining post, makes liquefied ammonia.
Claims (5)
1, a kind of 5, the production method of 5 dimethyl hydantion, it is characterized in that: comprise the following steps: in reactor, to add ammoniacal liquor, acetone cyanohydrin reacts, during reaction, open the gas input valve of reactor, and the gas delivery valve on unlatching and the condenser that reactor is connected, in reactor, feed carbon ammonium conversion gas, no cyanogen root to the reactant.
2, the production method of 5,5 dimethyl hydantion according to claim 1 is characterized in that: the mol ratio of ammoniacal liquor and acetone cyanohydrin is an ammoniacal liquor in the reaction raw materials: acetone cyanohydrin=1: 0.8.
3, the production method of 5,5 dimethyl hydantion according to claim 1 is characterized in that: acetone cyanohydrin is added drop-wise in the ammoniacal liquor under 30～40 ℃.
4, according to the production method of claim 1,2 or 3 described 5,5 dimethyl hydantion, it is characterized in that: temperature of reaction is 60～70 ℃.
5, according to the production method of claim 1,2 or 3 described 5,5 dimethyl hydantion, it is characterized in that: the feeding speed of conversion gas is 3M
3/ minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100380400A CN100369901C (en) | 2006-01-23 | 2006-01-23 | Method for preparing 5,5-dimethylhydantion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100380400A CN100369901C (en) | 2006-01-23 | 2006-01-23 | Method for preparing 5,5-dimethylhydantion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1803775A true CN1803775A (en) | 2006-07-19 |
| CN100369901C CN100369901C (en) | 2008-02-20 |
Family
ID=36865951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100380400A Active CN100369901C (en) | 2006-01-23 | 2006-01-23 | Method for preparing 5,5-dimethylhydantion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100369901C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002000A (en) * | 2010-11-18 | 2011-04-06 | 大庆井井源油田科技开发有限公司 | Method for producing 5,5-dimethyl hydantoin |
| CN102030712A (en) * | 2010-11-18 | 2011-04-27 | 大庆井井源油田科技开发有限公司 | Device for producing dimethyl hydantoin |
| CN108148000A (en) * | 2018-03-20 | 2018-06-12 | 河北鑫淘源环保科技有限公司 | A kind of preparation method of 5,5 Dimethyl Hydan |
| CN115703744A (en) * | 2021-11-16 | 2023-02-17 | 吉林市吉化江城油脂化工有限责任公司 | Preparation method of 5,5-dimethylhydantoin |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH522652A (en) * | 1967-08-18 | 1972-06-30 | Texaco Ag | Process and device for the continuous production of hydantoins, in particular 5,5-dimethylhydantoin |
| DE2744428B2 (en) * | 1977-10-03 | 1981-01-15 | Lentia Gmbh, Chem. U. Pharm. Erzeugnisse - Industriebedarf, 8000 Muenchen | Process for the continuous production of hydantoin derivatives and apparatus for carrying out the same |
| CN1108292C (en) * | 1999-04-20 | 2003-05-14 | 南京化工大学 | Preparation of 2,4-imidzolidinedione |
| CN100427471C (en) * | 2002-12-31 | 2008-10-22 | 中国人民解放军军事医学科学院放射与辐射医学研究所 | Process for preparing hydantoin |
| CN1259311C (en) * | 2004-09-15 | 2006-06-14 | 南京工业大学 | Process for preparing hydantoin by one-step method |
-
2006
- 2006-01-23 CN CNB2006100380400A patent/CN100369901C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002000A (en) * | 2010-11-18 | 2011-04-06 | 大庆井井源油田科技开发有限公司 | Method for producing 5,5-dimethyl hydantoin |
| CN102030712A (en) * | 2010-11-18 | 2011-04-27 | 大庆井井源油田科技开发有限公司 | Device for producing dimethyl hydantoin |
| CN102002000B (en) * | 2010-11-18 | 2012-07-25 | 祝莉宁 | Method for producing 5,5-dimethyl hydantoin |
| CN108148000A (en) * | 2018-03-20 | 2018-06-12 | 河北鑫淘源环保科技有限公司 | A kind of preparation method of 5,5 Dimethyl Hydan |
| CN115703744A (en) * | 2021-11-16 | 2023-02-17 | 吉林市吉化江城油脂化工有限责任公司 | Preparation method of 5,5-dimethylhydantoin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100369901C (en) | 2008-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102267921B (en) | A kind of synthesis oxamide continuous processing | |
| CN1803775A (en) | Method for preparing 5,5-dimethylhydantion | |
| US20110175032A1 (en) | Method and plant for the production of synthesis gas from biogas | |
| US20120135491A1 (en) | Method for producing biogas or sewage gas | |
| NZ604050A (en) | Nutrient recovery systems and methods | |
| CN102515877B (en) | Preparation method for urea ammonium nitrate solution | |
| Wang et al. | Tourmaline enhanced methane yield via regulating microbial metabolic balance during anaerobic co-digestion of corn stover and cow manure | |
| CN102050699B (en) | Process for co-producing methanol and ammonia by utilizing calcium carbide tail gas | |
| CN103980094A (en) | Process for preparing methanol from tail gas of calcium carbide furnace | |
| Wang et al. | Effects of biochar carried microbial agent on compost quality, greenhouse gas emission and bacterial community during sheep manure composting | |
| WO2006039335B1 (en) | A streamlined methane gas generation system | |
| CN101269998B (en) | Application of carbonatation revolving furnace steel scoria in accelerating carbonic anhydride absorption of ocean | |
| CN103159325A (en) | Method for enriching anaerobic ammonium oxidation bacteria from common activated sludge | |
| Huang | Emissions of greenhouse gases in China and its reduction strategy | |
| CN103184242A (en) | Biological utilization method of coal underground gasification product gas | |
| WO2008004853B1 (en) | Pre-treatment of biomass | |
| CN101538627B (en) | Method for preparing direct reduced iron by bio-oil | |
| CN209778305U (en) | SO3Standard gas preparation device | |
| CN112107967A (en) | Organic amine desulfurization solution and production method and application thereof | |
| CN102502706A (en) | Method for reclaiming ammonium hydrogen carbonate from non-condensable gas of stripping tower | |
| CN102344393A (en) | Equipment for producing fertilizers by wind energy | |
| US11629302B2 (en) | Fuel production plant | |
| Zhen et al. | Material and energy conversion efficiency of anaerobic fermentation process of Penisetum hybrid for biogas | |
| CN102503592A (en) | Method for producing carbon dioxide air fertilizer with ammonium bicarbonate hydrolyzing method | |
| CN208883804U (en) | A kind of biogas in-line purification device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU LONG 99 SCIENCE & TECHNOLOY CO., LTD. Free format text: FORMER OWNER: ZHOU XINJI Effective date: 20080425 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080425 Address after: Matang town of Jiangsu County of Rudong province Jianshe Road No. 40 Patentee after: Jiangsu Jiujiujiu Technology Co., Ltd. Address before: Matang town of Jiangsu County of Rudong province Jianshe Road No. 40 Patentee before: Zhou Xinji |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 226407 Rudong Economic Development Zone, Nantong, the Yellow Sea, No., No. three road, No. 12 Patentee after: Jiangsu BICON Pharmaceutical Co., Ltd. Address before: 226401 Jiangsu Matang Town County of Rudong province Jianshe Road No. 40 Patentee before: Jiangsu Jiujiujiu Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20171227 Address after: 226407 Rudong Economic Development Zone, Nantong, the Yellow Sea, No., No. three road, No. 12 Patentee after: Jiangsu nine Jiangsu jiujiujiu Technology Co. Ltd. Address before: 226407 Rudong Economic Development Zone, Nantong, the Yellow Sea, No., No. three road, No. 12 Patentee before: Jiangsu BICON Pharmaceutical Co., Ltd. |
|
| TR01 | Transfer of patent right |