CN111454134A - Device and method for adjusting yield of target product of polymethoxy dimethyl ether - Google Patents
Device and method for adjusting yield of target product of polymethoxy dimethyl ether Download PDFInfo
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- CN111454134A CN111454134A CN201910053979.1A CN201910053979A CN111454134A CN 111454134 A CN111454134 A CN 111454134A CN 201910053979 A CN201910053979 A CN 201910053979A CN 111454134 A CN111454134 A CN 111454134A
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- methylal
- trioxymethylene
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- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 118
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 claims abstract description 84
- BGJSXRVXTHVRSN-UHFFFAOYSA-N 1,3,5-trioxane Chemical group C1OCOCO1 BGJSXRVXTHVRSN-UHFFFAOYSA-N 0.000 claims abstract description 79
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 239000000047 product Substances 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 24
- 239000012043 crude product Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 3
- -1 polyoxymethylene dimethyl ethers Polymers 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003889 chemical engineering Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract description 2
- 239000012847 fine chemical Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000007670 refining Methods 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000010408 film Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/48—Preparation of compounds having groups
- C07C41/50—Preparation of compounds having groups by reactions producing groups
- C07C41/56—Preparation of compounds having groups by reactions producing groups by condensation of aldehydes, paraformaldehyde, or ketones
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention belongs to the field of fine chemical engineering from coal chemical industry to petrochemical industry, and particularly relates to a device and a method for adjusting the yield of a polymethoxy dimethyl ether target product. The device mainly comprises a methylal raw material system, a trioxymethylene raw material system and a reaction system. The beneficial effects are that: the invention is combined with the prior production process technology by DMMnAnd DMM2By adjusting the DMM of the subsequent systemnAnd DMM2Adjusting DMM by refining amountnAnd DMM2The yield of (2) can be maximized, the benefit of the alcohol ether device can be maximized, the market demand can be met, and the flexible adjustment of the operation of the device can be realized by adjusting.
Description
Technical Field
The invention belongs to the field of fine chemical engineering from coal chemical industry to petrochemical industry, and particularly relates to a device and a method for adjusting the yield of a polymethoxy dimethyl ether target product.
Background
The industrial device for preparing the polymethoxy dimethyl ether from the methanol of China's safety chemical industry Co., Ltd is mainly used for producing alcohol ether fuel products, and can also produce byproducts such as methylal, trioxymethylene and the like, the design capacity is 5 ten thousand tons/year, and the operation flexibility is 70-110%.
Alcohol ether fuels are a generic term for a class of substances, the simple formula of which can be expressed as: CH (CH)3O(CH2O)nCH3(n is an integer greater than or equal to 1), wherein the value range of n with application significance is as follows: n is more than or equal to 1 and less than or equal to 8.
The polymethoxy dimethyl ether synthesis unit takes methylal and trioxymethylene as raw materials, adopts a novel solid catalyst newly developed by Lanzhou chemical and physical research institute of Chinese academy of sciences to react at a certain temperature and pressure to generate polymethoxy dimethyl ether, and then obtains a high-purity polymethoxy dimethyl ether product through operations such as separation from a reactant, deacidification, light component recovery and the like.
Disclosure of Invention
The invention provides a device and a method for adjusting the yield of a target product of polymethoxy dimethyl ether in order to make up for the defects of the prior art.
The invention is realized by the following technical scheme: a device for adjusting the yield of poly methoxy dimethyl ether target products mainly comprises a methylal raw material system, a trioxymethylene raw material system and a reaction system, wherein the methylal raw material system comprises a methylal feeding mixer, a methylal raw material tank and a methylal discharging pump; the trioxymethylene raw material system comprises a trioxymethylene feeding mixer, a trioxymethylene raw material tank and a trioxymethylene discharging pump; the reaction system comprises a raw material feeding mixer, a raw material mixing tank circulating pump and a reactor; the methylal feeding mixer is arranged behind the liquid receiving tank on the top of the product tower, the methylal feeding mixer is arranged in front of the methylal raw material tank, the methylal discharging pump is arranged behind the methylal raw material tank, and the methylal raw material tank is arranged between the methylal feeding mixer and the methylal discharging pump; the trioxymethylene mixer is arranged behind the film evaporator, the trioxymethylene feeding mixer is arranged in front of the trioxymethylene raw material tank, the trioxymethylene discharging pump is arranged behind the trioxymethylene raw material tank, and the trioxymethylene raw material tank is arranged between the trioxymethylene feeding mixer and the trioxymethylene discharging pump; the raw material feeding mixer is arranged behind a methylal discharging pump and a trioxymethylene discharging pump, the raw material feeding mixer is arranged in front of a raw material mixing pump, a raw material mixing tank is arranged between the raw material feeding mixer and a circulating pump of the raw material mixing tank, and the reactor is arranged behind a circulating pump of a raw material mixing pipe.
Furthermore, a discharge port of the methylal feeding mixer is connected with a feed port of the methylal raw material tank, a discharge port of the methylal raw material tank is connected with a methylal discharge pump, the discharge of the methylal discharge pump is divided into two branches, one branch is connected with the feed port of the methylal feeding mixer, and the other branch is connected with the feed port of the methylal raw material tank; trioxymethylene feed mixer discharge gate is connected with trioxymethylene head tank feed inlet, trioxymethylene head tank discharge gate links to each other with trioxymethylene discharge pump, the trioxymethylene discharge pump ejection of compact divide into two branches, connects raw materials feed mixer feed inlet all the way, connects trioxymethylene head tank feed inlet all the way.
Further, raw materials feed mixer discharge gate links to each other with the raw materials mixing pump feed inlet, raw materials mixing tank discharge gate links to each other with raw materials mixing tank circulating pump feed inlet, raw materials mixing tank circulating pump ejection of compact divide into two branches, connects the reactor feed inlet all the way, connects raw materials mixing tank feed inlet all the way.
The method for utilizing the device technology improvement technology for regulating the target product of the polymethoxy dimethyl ether comprises the following steps:
（1）、DMM2after the crude product enters a methylal feed mixer from a liquid receiving tank at the top of the product tower through a pump, regulating the concentration of the DMM crude product fed into the methylal raw material tank through the methylal feed mixer according to the concentration of needed DMM2 and DMMn;
(2) DMM in methylal feed tank2The crude product is sent into the reaction system again from the methylal discharging pump and the raw material feeding mixer to participate in the reaction, and DMM is continuously generated2The above products;
(3) the DMM9 and the DMM10 discharged from the bottom of the thin film evaporator are pumped into a trioxymethylene feeding mixer, are uniformly mixed according to a certain proportion by the trioxymethylene feeding mixer, enter a trioxymethylene raw material tank, enter a reaction system again by a trioxymethylene discharging pump and a raw material feeding mixer to participate in reaction, and the DMM9And DMM10Cracking into lighter product components (DMM) during the re-reaction2-8）。
The invention has the beneficial effects that the invention is combined with the prior production process technology, and DMMn and DMM are adopted2By adjusting DMMn and DMM of subsequent systems2Adjusting DMMn and DMM by recycling amount2The yield of (2) can be maximized, the benefit of the alcohol ether device can be maximized, the market demand can be met, and the flexible adjustment of the operation of the device can be realized by adjusting.
Drawings
FIG. 1 is a schematic diagram of the structure and flow of the apparatus of the present invention.
In the figure: 10 methylal feed system: 100 methylal feed mixer, 101 methylal raw material tank and 102 methylal discharge pump.
20 trioxymethylene raw material system: 200 trioxymethylene feed mixer; 201 trioxymethylene raw material tank; 202 trioxymethylene discharging pump.
30 reaction system: 300 raw material feed mixer; 301 raw material mixing tank; 302 raw material mixing tank circulation pump; 303, a reactor.
Detailed Description
The technical solutions of the present invention are described below by specific examples, which are only for illustrative purposes and do not limit the scope of the present invention in any way. In addition, unless otherwise specified, the equipment and materials used in the following examples are commercially available, unless otherwise specified, and if the processing conditions are not specifically specified, please refer to the purchased product specifications or follow conventional methods in the art.
A device for adjusting the target product yield of polymethoxy dimethyl ether mainly comprises a methylal raw material system 10, a trioxymethylene raw material system 20 and a reaction system 30, wherein the methylal raw material system comprises a methylal feeding mixer 100, a methylal raw material tank 101 and a methylal discharging pump 102; a trioxymethylene raw material system 20, a trioxymethylene feed mixer 200, a trioxymethylene raw material tank 201, and a trioxymethylene discharge pump 202; the reaction system comprises a raw material feeding mixer 300, a raw material mixing tank 301, a raw material mixing tank circulating pump 302 and a reactor 303.
The methylal feed mixer 100 is arranged behind the liquid receiving tank on the top of the product tower, the methylal feed mixer 100 is arranged in front of the methylal raw material tank 101, the methylal discharge pump 102 is arranged behind the methylal raw material tank 101, and the methylal raw material tank 101 is arranged between the methylal feed mixer 100 and the methylal discharge pump 102; the trioxymethylene mixer 200 is arranged behind the film evaporator, the trioxymethylene feeding mixer 200 is arranged in front of the trioxymethylene raw material tank 201, the trioxymethylene discharging pump 202 is arranged behind the trioxymethylene raw material tank 201, and the trioxymethylene raw material tank is arranged between the trioxymethylene feeding mixer 200 and the trioxymethylene discharging pump 202; the raw material feed mixer 300 is arranged behind the methylal discharge pump 102 and the trioxymethylene discharge pump 202, the raw material feed mixer 300 is arranged in front of the raw material mixing pump 301, the raw material mixing tank 301 is arranged between the raw material feed mixer 300 and the raw material mixing tank circulating pump 302, and the reactor is arranged behind the raw material mixing pipe circulating pump 302.
A discharge port 100 of the methylal feeding mixer is connected with a feed port of a methylal raw material tank 101, a discharge port of the methylal raw material tank 101 is connected with a methylal discharge pump 102, the discharge of the methylal discharge pump is divided into two branches, one branch is connected with the feed port of the raw material feeding mixer 300, and the other branch is connected with the feed port of the methylal raw material tank 102; the discharge port of the trioxymethylene feed mixer 200 is connected with the feed port of the trioxymethylene raw material tank 201, the discharge port of the trioxymethylene raw material tank 201 is connected with the trioxymethylene discharge pump 202, the discharge of the trioxymethylene discharge pump 202 is divided into two branches, one branch is connected with the feed port of the raw material feed mixer 300, and the other branch is connected with the feed port of the trioxymethylene raw material tank 201.
The discharge hole of the raw material feeding mixer 300 is connected with the feed inlet of the raw material mixing pump, the discharge hole of the raw material mixing tank 301 is connected with the feed inlet of the raw material mixing tank circulating pump 302, the discharge of the raw material mixing tank circulating pump 302 is divided into two branches, one branch is connected with the feed inlet of the reactor 303, and the other branch is connected with the feed inlet of the raw material mixing tank.
The specific process steps are as follows:
(1) after the crude DMM2 product enters a methylal feed mixer 100 from a liquid receiving tank at the top of the product tower through a pump, DMM is added according to the requirement2And DMMn concentration is adjusted by means of a methylal feed mixer 100 to feed DMM into a methylal feed tank 1012The concentration of the crude product;
(2) DMM in methylal feed tank 1012The crude product is sent into the reaction system 30 again from the methylal discharging pump and the raw material feeding mixer 300 to participate in the reaction, and DMM is continuously generated2The above products;
(3) DMM9 and DMM10 discharged from the bottom of the thin film evaporator are pumped into a trioxymethylene feeding mixer 200, are uniformly mixed in a certain proportion by the trioxymethylene feeding mixer 200, enter a trioxymethylene raw material tank 201, enter a reaction system again by a trioxymethylene discharging pump 202 and a raw material feeding mixer 300 to participate in reaction, and are DMM9And DMM10Cracking into lighter product component DMM in the course of re-reaction2-8。
Claims (4)
1. A device for adjusting the target product yield of polymethoxy dimethyl ether mainly comprises a methylal raw material system (10), a trioxymethylene raw material system (20) and a reaction system (30), wherein the methylal raw material system comprises a methylal feeding mixer (100), a methylal raw material tank (101) and a methylal discharging pump (102); the trioxymethylene raw material system (20) comprises a trioxymethylene feeding mixer (200), a trioxymethylene raw material tank (201) and a trioxymethylene discharging pump (202); the reaction system (30) comprises a raw material feeding mixer (300), a raw material mixing tank (301), a raw material mixing tank circulating pump (302) and a reactor (303); the methylal feed mixer (100) is arranged behind a product overhead liquid receiving tank, the methylal feed mixer (100) is arranged in front of a methylal raw material tank (101), the methylal discharge pump (102) is arranged behind the methylal raw material tank (101), and the methylal raw material tank (101) is arranged between the methylal feed mixer (100) and the methylal discharge pump (102); the trioxymethylene mixer (200) is arranged behind the thin film evaporator, the trioxymethylene feeding mixer (200) is arranged in front of a trioxymethylene raw material tank (201), the trioxymethylene discharging pump (202) is arranged behind the trioxymethylene raw material tank (201), and the trioxymethylene raw material tank is arranged between the trioxymethylene feeding mixer (200) and the trioxymethylene discharging pump (202); the raw material feeding mixer (300) is arranged behind a methylal discharging pump (102) and a trioxymethylene discharging pump (202), the raw material feeding mixer (300) is arranged in front of a raw material mixing pump (301), the raw material mixing tank (301) is arranged between the raw material feeding mixer (300) and a raw material mixing tank circulating pump (302), and the reactor is arranged behind the raw material mixing pipe circulating pump (302).
2. The device for adjusting the target product yield of polyoxymethylene dimethyl ethers according to claim 1, wherein the discharge port (100) of the methylal feed mixer is connected with the feed port of the methylal raw material tank (101), the discharge port of the methylal raw material tank (101) is connected with a methylal discharge pump (102), the discharge of the methylal discharge pump is divided into two branches, one branch is connected with the feed port of the methylal feed mixer (300), and the other branch is connected with the feed port of the methylal raw material tank (102); trioxymethylene feed mixer (200) discharge gate is connected with trioxymethylene head tank (201) feed inlet, trioxymethylene head tank (201) discharge gate links to each other with trioxymethylene ejection of compact pump (202), trioxymethylene ejection of compact pump (202) ejection of compact divide into two branches, connects raw materials feed mixer (300) feed inlet all the way, connects trioxymethylene head tank (201) feed inlet all the way.
3. The device for adjusting the target product yield of polyoxymethylene dimethyl ethers according to claim 1, wherein the discharge port of the raw material mixer (300) is connected with the feed port of the raw material mixing pump, the discharge port of the raw material mixing tank (301) is connected with the feed port of the raw material mixing tank circulating pump (302), the discharge of the raw material mixing tank circulating pump (302) is divided into two branches, one branch is connected with the feed port of the reactor (303), and the other branch is connected with the feed port of the raw material mixing tank.
4. The method for adjusting the yield of the target polymethoxy dimethyl ether product as claimed in claim 1, which comprises the steps of:
DMM2the crude product enters a methylal feeding mixer (100) from a liquid receiving tank at the top of the product tower through a pump, and DMM is added according to the requirement2And DMMnIs adjusted by means of a methylal feed mixer (100) to feed DMM into a methylal feed tank (101)2The concentration of the crude product;
DMM in methylal feed tank (101)2The crude product is sent into the reaction system (30) again from the methylal discharging pump and the raw material feeding mixer (300) to participate in the reaction, and DMM is continuously generated2The above products;
DMM9 and DMM10 discharged from the bottom of the thin film evaporator are pumped into a trioxymethylene feeding mixer (200), are uniformly mixed according to a certain proportion by the trioxymethylene feeding mixer (200), enter a trioxymethylene raw material tank (201), and enter a reaction system again to participate in reaction by a trioxymethylene discharging pump (202) and a raw material feeding mixer (300), and DMM9And DMM10Cracking into lighter product components (DMM) during the re-reaction2-8）。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053979.1A CN111454134A (en) | 2019-01-21 | 2019-01-21 | Device and method for adjusting yield of target product of polymethoxy dimethyl ether |
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| CN201910053979.1A CN111454134A (en) | 2019-01-21 | 2019-01-21 | Device and method for adjusting yield of target product of polymethoxy dimethyl ether |
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| CN201910053979.1A Pending CN111454134A (en) | 2019-01-21 | 2019-01-21 | Device and method for adjusting yield of target product of polymethoxy dimethyl ether |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048357A (en) * | 2004-10-25 | 2007-10-03 | 巴斯福股份公司 | Method for producing polyoxymethylene dimethyl ethers |
| US20150094497A1 (en) * | 2013-09-29 | 2015-04-02 | Lanzhou Institute Of Chemical Physics, Chinese Academy Of Sciences | Reaction system and process for preparing polymethoxy dimethyl ether |
| CN104926627A (en) * | 2014-12-26 | 2015-09-23 | 北京东方红升新能源应用技术研究院有限公司 | Continuous reaction device for synthetizing polymethoxy dimethyl ether |
| CN106220481A (en) * | 2016-07-27 | 2016-12-14 | 中国科学院山西煤炭化学研究所 | A kind of technique of continuous production polyoxymethylene dimethyl ether |
| CN107739301A (en) * | 2017-11-08 | 2018-02-27 | 江苏道尔顿石化科技有限公司 | A kind of polymethoxy dimethyl ether synthesis system and technique |
| CN108359065A (en) * | 2018-04-03 | 2018-08-03 | 苏州双湖化工技术有限公司 | The method that load-type ion liquid catalysis prepares high molecular weight polymethoxy dimethyl ether |
-
2019
- 2019-01-21 CN CN201910053979.1A patent/CN111454134A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048357A (en) * | 2004-10-25 | 2007-10-03 | 巴斯福股份公司 | Method for producing polyoxymethylene dimethyl ethers |
| US20150094497A1 (en) * | 2013-09-29 | 2015-04-02 | Lanzhou Institute Of Chemical Physics, Chinese Academy Of Sciences | Reaction system and process for preparing polymethoxy dimethyl ether |
| CN104926627A (en) * | 2014-12-26 | 2015-09-23 | 北京东方红升新能源应用技术研究院有限公司 | Continuous reaction device for synthetizing polymethoxy dimethyl ether |
| CN106220481A (en) * | 2016-07-27 | 2016-12-14 | 中国科学院山西煤炭化学研究所 | A kind of technique of continuous production polyoxymethylene dimethyl ether |
| CN107739301A (en) * | 2017-11-08 | 2018-02-27 | 江苏道尔顿石化科技有限公司 | A kind of polymethoxy dimethyl ether synthesis system and technique |
| CN108359065A (en) * | 2018-04-03 | 2018-08-03 | 苏州双湖化工技术有限公司 | The method that load-type ion liquid catalysis prepares high molecular weight polymethoxy dimethyl ether |
Non-Patent Citations (1)
| Title |
|---|
| 时米东等: "聚甲氧基二甲醚合成工艺介绍", 《天然气化工（C1化学与化工》 * |
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