Process for Purifying HBr in Hydrocarbons
OwnerXiaoping Zhou, Zhen Liu +2inventors
InventorsXiaoping Zhou, Zhen Liu, Wenshen Li, Yanqun Ren
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Abstract
The present invention provides a method for separating HBr from HBr-containing hydrocarbons (alkenes, aromatics and/or alkanes) to purify the hydrocarbons. Reacting a silica supported metal oxide solid material (MOx/SiO2, MOx=MgO, CoO, Co2O3, CuO and mixture thereof) with HBr in HBr-containing hydrocarbons, so as to ensure that the concentration of HBr is reduced to below 1.87×10−16, and then oxidizing the solid material which reacted with HBr in oxygen or air to regenerate MOx/SiO2, meanwhile Br2 is recycled. Therefore, the purpose of continuous purification of hydrocarbons can be achieved.
Claims14
A method for separating HBr from HBr-containing hydrocarbons, comprising:
- a) providing a container and a solid material composed of at least one metal oxide and a support therein;
- contacting HBr-containing hydrocarbons with the solid material at a certain temperature;
- reacting the metal oxide with HBr to produce metal bromide and water;
- directing the hydrocarbons into a storage tank;
- b) switching HBr-containing hydrocarbons to another similar container when metal oxide exhausts, to perform the process a);
- purging first container by steam;
- directing oxygen or air into first container, regenerating metal oxide at a certain temperature and recycling Br2;
- c) connecting two or more such containers by switch valve and thereby forming a purification system, cycling the process a) and process b) and HBr is separated from HBr-containing hydrocarbons.
Dependencies are inferred from the claim text.