Waste heat recycling device and method in reaction process of ethene hydroformylation

A technology of ethylene hydroformylation and waste heat recovery device, which is applied in the direction of carbon monoxide reaction preparation, climate change adaptation, chemical industry, etc., can solve the problems of heat waste, heat transfer medium heat cannot be recovered, increase the operating cost of the device, etc., to achieve Improved economy, simple structure, and stable operation

Pending Publication Date: 2018-09-28
NINGBO JUHUA CHEM TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The disadvantage is that the heat in the heat transfer medium cannot be recove

Method used

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  • Waste heat recycling device and method in reaction process of ethene hydroformylation

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Example Embodiment

[0031] Example 1

[0032] A waste heat recovery device in the process of ethylene hydroformylation reaction, comprising a reactor 1 (axial reactor with a heat transfer medium outlet), a steam drum 2 (with a heat transfer medium gas phase inlet) and Refrigeration unit 3 (lithium bromide absorption refrigeration unit), the heat transfer medium outlet of reactor 1 is connected to the heat transfer medium gas phase inlet of steam drum 2, and the heat transfer medium gas phase outlet of steam drum 2 is connected to the heat transfer medium inlet of refrigeration unit 3 , The heat transfer medium liquid phase outlet of the steam drum 2 is connected with the heat transfer medium inlet of the reactor 1, and the heat transfer medium outlet of the refrigeration unit 3 is connected with the heat transfer medium liquid phase inlet of the steam drum 2.

[0033] Use this device to recover the waste heat in the process of preparing propionaldehyde from the hydroformylation of ethylene. The parame...

Example Embodiment

[0036] Example 2

[0037] A waste heat recovery device in the process of ethylene hydroformylation reaction, comprising a reactor 1 (a radial reactor with two heat transfer medium outlets) and a steam drum 2 (with two heat transfer medium gas phase inlets) ) And refrigeration unit 3 (lithium bromide absorption refrigeration unit), the heat transfer medium outlet of reactor 1 is connected to the heat transfer medium gas phase inlet of steam drum 2, and the heat transfer medium gas phase outlet of steam drum 2 is connected to the heat transfer medium of refrigeration unit 3. The inlet is connected, the heat transfer medium liquid phase outlet of the steam drum 2 is connected with the heat transfer medium inlet of the reactor 1, and the heat transfer medium outlet of the refrigeration unit 3 is connected with the heat transfer medium liquid phase inlet of the steam drum 2.

[0038] Use this device to recover the waste heat in the process of preparing propionaldehyde from the hydroform...

Example Embodiment

[0041] Example 3

[0042] A waste heat recovery device in the process of ethylene hydroformylation reaction, comprising a reactor 1 (a radial reactor with three heat transfer medium outlets), a steam drum 2 (with three heat transfer medium gas phase inlets) and Refrigeration unit 3 (lithium bromide absorption refrigeration unit), the heat transfer medium outlet of reactor 1 is connected to the heat transfer medium gas phase inlet of steam drum 2, and the heat transfer medium gas phase outlet of steam drum 2 is connected to the heat transfer medium inlet of refrigeration unit 3 , The heat transfer medium liquid phase outlet of the steam drum 2 is connected with the heat transfer medium inlet of the reactor 1, and the heat transfer medium outlet of the refrigeration unit 3 is connected with the heat transfer medium liquid phase inlet of the steam drum 2.

[0043] Use this device to recover the waste heat in the process of preparing propionaldehyde from the hydroformylation of ethylen...

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Abstract

The invention discloses a waste heat recycling device in the reaction process of ethene hydroformylation. The waste heat recycling device comprises a reactor, and further comprises a steam pocket anda refrigerating unit, and heat-transfer medium outlets of the reactor are connected with heat-transfer medium gas-phase inlets of the steam pocket; a heat-transfer medium gas-phase outlet of the steampocket is connected with a heat-transfer medium inlet of the refrigerating unit, a heat-transfer medium liquid-phase outlet of the steam pocket is connected with a heat-transfer medium inlet of the reactor, and a heat-transfer medium outlet of the refrigerating unit is connected with a heat-transfer medium liquid-phase inlet of the steam pocket. The invention further provides a method for using the device to recycle waste heat in the reaction process of ethene hydroformylation. The waste heat recycling device and method have the advantages of being simple in structure, stable to operate, lowin running cost, efficient and economical.

Description

technical field [0001] The invention relates to a waste heat recovery device and a method thereof, in particular to a waste heat recovery device and a method thereof in the ethylene hydroformylation reaction process. Background technique [0002] Ethylene hydroformylation is the main method to prepare many important organic solvents and chemical raw materials. For example, n-propanal and n-propanol are mainly synthesized by ethylene hydroformylation. Ethylene hydroformylation is also known as carbonyl The synthesis method is a method of producing propionaldehyde under the action of a catalyst using ethylene, carbon monoxide, and hydrogen as raw materials. The main features of this method are high product purity, no isomers, and easy separation. It is the main method for producing propionaldehyde and development direction, and the production of n-propanol mainly includes two parts: the reaction of n-propanal and hydrogen to produce crude propanol and the refining process of c...

Claims

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Application Information

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IPC IPC(8): C07C45/49C07C47/02F25B15/06
CPCC07C45/49F25B15/06C07C47/02Y02A30/27Y02B30/62Y02P20/10
Inventor 周强钟骏良杜继立吴刚李刚穆成均
Owner NINGBO JUHUA CHEM TECH CO LTD
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