RU-2026101068-A - SYSTEM AND METHOD FOR PRODUCING A MIXTURE OF BUTANALS AND BUTANOLS

Inventors

• ЧЗАН, Чжибин
• СУНЬ, Хайнин
• ХУ, Синбан
• ЯО, Чэньфэй
• ЧЖОУ, Чжэн
• ЛИ, Лэй

Assignees

• НАНЬЦЗИН АНИКОХ КО. ЛТД

Dates

Publication Date

20260505

Application Date

20241105

Priority Date

20240410

Claims (16)

1. 1. A system for producing a mixture of butanal and butanol, characterized in that such a system contains
2. a high-pressure reactor in the middle of which a dividing plate is installed; the space above the dividing plate is the first reaction zone, and below the dividing plate is the second reaction zone, with catalyst inlets provided in the side walls of both zones;
3. inlets for propene and carbon monoxide are provided in the side wall of the first reaction zone, and the first set of devices for dispersing bubbles is installed inside the zone;
4. An inlet for the gas mixture is provided in the side wall of the second reaction zone, and a second set of devices for dispersing bubbles is installed inside the zone.
5. 2. The system according to claim 1, characterized in that the first set of devices for dispersing bubbles comprises: a first bubble disperser installed at the bottom of the first reaction zone; several distribution disks located above the first bubble disperser, wherein there is a gap between two adjacent distribution disks; preferably, the adjacent distribution disks are connected by several cross beams serving to support them, wherein the several cross beams divide the gap into several independent regions.
6. 3. The system according to claim 1, characterized in that the second set of devices for dispersing bubbles comprises: a second bubble disperser and a third bubble disperser, wherein the second bubble disperser is located above the third bubble disperser, and they are installed coaxially; a connecting pipeline located between the second and third bubble dispersers, in the middle part of which an outlet opening is provided for removing the internal material; preferably, several multi-layer throttle disks are installed inside the connecting pipeline, and the distances between two adjacent throttle disks are equal; preferably, a mixing unit is installed under the second set of devices for dispersing bubbles, which unit contains a shaft and blades installed on its end.
7. 4. The system according to claim 1, characterized in that an overflow pipeline is installed in the first reaction zone, which passes through the separator plate and connects the first and second reaction zones; the product formed in the first reaction zone enters the second reaction zone through this overflow pipeline.
8. 5. The system according to claim 1, characterized in that a gas chamber is installed in the upper part of the first reaction zone, which is located above the liquid level in the first reaction zone; the gas outlet of the gas chamber is connected to a first set of devices for dispersing bubbles for recirculating unreacted gas from the first reaction zone; preferably, a defoamer is installed under the gas chamber, which is located above the first set of devices for dispersing bubbles and below the liquid level in the first reaction zone.
9. 6. A system for producing a mixture of butanal and butanol according to claim 1, characterized in that it further comprises a propylene reservoir, a carbon monoxide reservoir, and a hydrogen reservoir; the polypropylene reservoir and the carbon monoxide reservoir are connected to corresponding inlets on the side wall of the first reaction zone; gases from the hydrogen reservoir and the carbon monoxide reservoir are pre-mixed in the gas mixture reservoir, after which the mixture is fed to the gas mixture inlet on the side wall of the second reaction zone; a gas-liquid separator connected to the outlet at the bottom of the high-pressure reactor; a condenser connected to the bottom of the gas-liquid separator.
10. 7. A method for producing a mixture of butanal and butanol using the system according to any one of paragraphs 1-6, characterized in that the method comprises the following stages:
11. replacement of the gas phase in the catalytic system with hydrogen; upon completion of the replacement, the sequential supply of propylene, carbon monoxide and hydrogen to carry out a catalytic reaction with the direct production of a mixture of butanal and butanol.
12. 8. The method according to claim 7, characterized in that the catalytic system is a catalytic system consisting of organophosphine rhodium and organophosphine ruthenium in a certain ratio; preferably, the organophosphine ligand is one or more of the following ligands: triphenylphosphine, 1,2-bis(diphenylphosphino)ethane, 1,8-bis(diphenylphosphino)naphthalene, 4,5-bisdiphenylphosphino-9,9-dimethylxanthene, monophosphine or bisphosphine ligands.
13. 9. The method according to claim 8, characterized in that the mass ratio of organophosphine rhodium and organophosphine ruthenium is (0-200):100.
14. 10. The method according to paragraph 7, characterized in that the total pressure of propylene, carbon monoxide and hydrogen is 0.5-3.0 MPa;
15. preferably, the partial pressure of propylene and hydrogen is 10:1-1:10;
16. Preferably, the catalytic reaction temperature is 80-160°C.