Process for producing (meth)acrolein or (meth)acrylic acid
A technology of acrolein and acrylic acid, which is applied in the direction of oxidative preparation of carboxylic acid, carboxylate preparation, organic chemical methods, etc., can solve uneconomical problems, and achieve the effect of ensuring continuous stable operation and superior economy
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0056] Acrylic acid is produced using a workshop for the production of acrylic acid, which sequentially includes an oxidation reaction step, a reaction gas cooling step, a low-boiling fraction separation step, a purification step, and a high-boiling fraction decomposition step, and has a production capacity of 100,000 tons per year, of which the oxidation reaction Steps - The reaction gas cooling step is provided in three series A, B and C, the low boiling fraction separation step and subsequent steps are provided in a single series. The production capacity of series A including the oxidation reaction step-reaction gas cooling step is 25000 tons per year (based on 25% of the total capacity); the production capacity of series B is 25000 tons per year (based on 25% of the total capacity); and series C The production capacity is 50000 tons / year (based on 50% of the total capacity). After 10 months from the start of operation of the plant, the pressure differential of the oxidatio...
Embodiment 2
[0062] Acrylic acid is produced using a workshop for the production of acrylic acid, which sequentially includes an oxidation reaction step, a reaction gas cooling step, a low-boiling fraction separation step, a purification step, and a high-boiling fraction decomposition step, and has a production capacity of 75,000 tons per year, of which the oxidation reaction Steps - The reaction gas cooling step is provided in two series A and B, the low boiling fraction separation step and subsequent steps are provided in a single series. The production capacity of series A including the oxidation reaction step-reaction gas cooling step is 25000 tons per year (based on about 33% of the total capacity); and the production capacity of series B is 50000 tons per year (based on about 67% of the total capacity). After 10 months from the start of operation of the plant, the pressure differential of the oxidation reactor used in series A increased and it became impossible to feed feed thereto. ...
Embodiment 3
[0064]The production of acrylic acid was carried out using the same equipment as in Example 2. After 10 months from the start of operation of the plant, the pressure differential of the oxidation reactor used in series B increased and it became impossible to feed feed thereto. Therefore, the operation of Series B was stopped. At this time, the operation of the oxidation reaction step-reaction gas cooling step in series A is continued. Because the operating capacity of the oxidation reaction step-reaction gas cooling step in series A is about 33%, while the operating capacity of the low-boiling point fraction separation step and subsequent steps is 50 to 100%, the part of the acrylic acid product obtained in the purification step introduces a low The boiling point fraction separation step to control the operating load of the low boiling point fraction separation step and subsequent steps to 50%. Continue to operate the plant under the above conditions. After complete repair ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com