Partial oxidation process of hydrocarbons

Patent metadata

Field	Value
Publication number	US-11986803-B2
Application number	US-201916978901-A
Country	US
Kind code	B2
Filing date	Mar 13, 2019
Priority date	Mar 13, 2018
Publication date	May 21, 2024
Grant date	May 21, 2024

Abstract

A partial oxidation process of hydrocarbons is provided, including bringing an inlet gas into contact with a catalyst, the inlet gas including a hydrocarbon raw material gas and a hydrogen chloride gas, wherein the catalyst includes a catalyst material including palladium (Pd), which catalyst material is supported on a carrier including cerium oxide (CeO 2 ) and an amount of catalyst material supported on the carrier is 2 wt % to 10 wt % based on a total weight of the catalyst.

First claim

The invention claimed is:

1. A partial oxidation process of hydrocarbons, comprising:
contacting inlet gas with a catalyst, said inlet gas comprising a hydrocarbon raw material gas and a hydrogen chloride gas,
wherein the catalyst comprises a catalyst material consisting of palladium (Pd), which catalyst material is supported on a carrier consisting of cerium oxide (CeO 2 ),
an amount of the catalyst material supported on the carrier is 2 wt % to 8 wt % based on a total weight of the catalyst,
the partial oxidation process is performed at a process temperature of 490° C. to 580° C., and
wherein the hydrocarbon raw material gas is converted to carbon monoxide, with no CH 3 Cl, CH 2 Cl 2 or CHCl 3 byproducts.

2. The partial oxidation process of claim 1 , wherein a ratio of volume flow rates of the hydrocarbon raw material gas to the hydrogen chloride gas is 1:1 to 10:1.

3. The partial oxidation process of claim 1 , wherein the inlet gas further comprises an oxygen gas, and a ratio of volume flow rates of the hydrocarbon raw material gas to the oxygen gas is 1:1 to 10:1.

4. The partial oxidation process of claim 1 , wherein the partial oxidation process is performed at a pressure of 0.5 atm to 3 atm.

5. The partial oxidation process of claim 1 , wherein a space velocity of the inlet gas is 10,000 ml/(h·gcat) to 50,000 ml/(h·gcat).

6. The partial oxidation process of claim 1 , wherein the inlet gas further comprises at least one inert gas selected from the group consisting of nitrogen gas, helium gas, argon gas, and carbon dioxide gas.

7. The partial oxidation process of claim 6 , wherein a ratio of volume flow rates of the hydrocarbon raw material gas to the at least one inert gas is 1:1 to 1:5.

8. The partial oxidation process of claim 1 , wherein the catalyst is in a form of particles having an average particle diameter of 0.1 mm to 10 mm.

9. The partial oxidation process of claim 1 , wherein said contacting is carried out by injecting the inlet gas into a reactor containing the catalyst, and wherein the reactor is a packed bed reactor, a fluidized bed reactor, or a circulating fluidized bed reactor.

10. The partial oxidation process of claim 9 , wherein the hydrogen chloride gas is continuously injected into the reactor.

11. The partial oxidation process of claim 1 , wherein the partial oxidation process is performed at a process temperature of 500° C. to 550° C.

12. The partial oxidation process of claim 1 , wherein the partial oxidation process provides CO as a target product at a selectivity of 98% or more.

13. The partial oxidation process of claim 1 , wherein the partial oxidation process provides CO as a target product at a selectivity of 99% or more.

Assignees

• Lg Chemical Ltd
• Seoul Nat Univ R&Db Foundation

Inventors

• Bang Jungup
• Kim Do Heui
• Hwang Gyo Hyun
• Jung Jongwook
• Bang Yongju
• Ryou Youngseok
• Kim Jeongeun

Classifications

• B01J35/40

  characterised by dimensions, e.g. grain size (in a colloidal state B01J35/23; crystallite size B01J35/77) · CPC title

• B01J23/63 Primary

  with rare earths or actinides · CPC title

• B01J23/10

  of rare earths · CPC title

• B01J35/615

  100-500 m2/g · CPC title

• C01B3/40 Primary

  characterised by the catalyst · CPC title