JPS5791944A - Recovery of methacrolein and/or methacrylic acid, and quenching tower - Google Patents
Recovery of methacrolein and/or methacrylic acid, and quenching towerInfo
- Publication number
- JPS5791944A JPS5791944A JP16803680A JP16803680A JPS5791944A JP S5791944 A JPS5791944 A JP S5791944A JP 16803680 A JP16803680 A JP 16803680A JP 16803680 A JP16803680 A JP 16803680A JP S5791944 A JPS5791944 A JP S5791944A
- Authority
- JP
- Japan
- Prior art keywords
- inlet
- reaction gas
- maintained
- flow rate
- quenching tower
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the titled substance without troubles of e.g. blockage with high-boiling by-products, by introducing the reaction gas obtained by the vapor- phase oxidation of isobutylene, etc. into a quenching tower through an inlet maintained at high temp. at a flow rate higher than a specific level, and making parallel flow contact with the condensed liquid of the reaction gas.
CONSTITUTION: The reaction gas obtained by the vapor-phase oxidation of isobutylene, etc. is introduced through the pipes 1', 2' into the quenching tower 8', and quenched by the parallel flow contact with the condensed liquid cooled with the heat-exchanger 4' to obtain condensed liquid containing the titled substance and noncondensing gas. In the above procedure, the temp. of the inlet is maintained at ≥200°C by the circular hot gas atmosphere sent through the hot gas introduction tube 3' and blasted from the hot gas nozzle 9', and the flow rate of the reaction gas at the inlet is maintained at ≥10m/sec.
EFFECT: By maintaining the inlet at high temp. and keeping the flow rate of the reaction gas at high level, the deposition of high-boiling by-product near the inlet can be prevented, and the operation can be continued for a long period. The generation of scum during the extraction can also be reduced.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16803680A JPS5791944A (en) | 1980-12-01 | 1980-12-01 | Recovery of methacrolein and/or methacrylic acid, and quenching tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16803680A JPS5791944A (en) | 1980-12-01 | 1980-12-01 | Recovery of methacrolein and/or methacrylic acid, and quenching tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5791944A true JPS5791944A (en) | 1982-06-08 |
| JPS6366301B2 JPS6366301B2 (en) | 1988-12-20 |
Family
ID=15860623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16803680A Granted JPS5791944A (en) | 1980-12-01 | 1980-12-01 | Recovery of methacrolein and/or methacrylic acid, and quenching tower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5791944A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0297788A2 (en) * | 1987-06-27 | 1989-01-04 | MITSUI TOATSU CHEMICALS, Inc. | Process of quenching reaction product gas containing methacrylic acid and method of treating quenched liquid |
| JPS646225A (en) * | 1987-06-27 | 1989-01-10 | Mitsui Toatsu Chemicals | Rapid cooling of reaction gas |
| US4925981A (en) * | 1982-01-22 | 1990-05-15 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Method of isolating methacrylic acid |
| JP2000290226A (en) * | 1999-04-05 | 2000-10-17 | Nippon Shokubai Co Ltd | Purification of easily polymerizable substance-containing material and equipment therefor |
| JP2005298384A (en) * | 2004-04-09 | 2005-10-27 | Asahi Kasei Chemicals Corp | Method of cooling reaction gas containing (meth)acrylic acid and/or (meth)acrolein |
-
1980
- 1980-12-01 JP JP16803680A patent/JPS5791944A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4925981A (en) * | 1982-01-22 | 1990-05-15 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Method of isolating methacrylic acid |
| EP0297788A2 (en) * | 1987-06-27 | 1989-01-04 | MITSUI TOATSU CHEMICALS, Inc. | Process of quenching reaction product gas containing methacrylic acid and method of treating quenched liquid |
| JPS646225A (en) * | 1987-06-27 | 1989-01-10 | Mitsui Toatsu Chemicals | Rapid cooling of reaction gas |
| US4987252A (en) * | 1987-06-27 | 1991-01-22 | Mitsui Toatsu Chemicals, Incorporated | Quenching process of reaction product gas containing methacrylic acid and treatment method of quenched liquid |
| JP2000290226A (en) * | 1999-04-05 | 2000-10-17 | Nippon Shokubai Co Ltd | Purification of easily polymerizable substance-containing material and equipment therefor |
| JP2005298384A (en) * | 2004-04-09 | 2005-10-27 | Asahi Kasei Chemicals Corp | Method of cooling reaction gas containing (meth)acrylic acid and/or (meth)acrolein |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6366301B2 (en) | 1988-12-20 |
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