JP2010248062A5 - - Google Patents

Claims (9)

A method for producing chlorine from hydrogen chloride by oxidizing hydrogen chloride in a fluidized bed reactor,
In the fluidized bed reactor, there are catalyst particles (A) that satisfy the following requirements (A1) and (A2), and reaction-inactive particles (B) that satisfy the following requirements (B1):
Hydrogen chloride to chlorine, wherein the content of copper element is 0.3 to 4.5% by weight per 100% by weight in total of the catalyst particles (A) and the reaction-inactive particles (B) How to manufacture.
(A1) The terminal velocity in air at 20 ° C. calculated from the Stokes equation of the catalyst particles (A) is 1.1 to 100 times the gas superficial velocity in the fluidized bed reactor.
(A2) The catalyst particles (A) contain 0.5 to 12% by weight of copper element per 100% by weight of the catalyst particles (A).
(B1) The terminal velocity in air at 20 ° C. calculated from the Stokes equation of the reaction-inactive particles (B) is 1.1 to 100 times the gas superficial velocity in the fluidized bed reactor. is there. The method for producing chlorine from hydrogen chloride according to claim 1 , wherein the catalyst particles (A) and reaction-inert particles (B) are present in a fluidized state in the fluidized bed reactor.   The average particle diameter of the catalyst particles (A) is 70 to 300 μm, and at least part of the reaction-inactive particles (B) includes particles having an average particle diameter of more than 50 μm and 300 μm or less. A method for producing chlorine from hydrogen chloride according to 1 or 2.   The weight ratio ((A) / (B)) of the catalyst particles (A) and reaction-inert particles (B) contained in the fluidized bed reactor is in the range of 5/95 to 99/1. The method to manufacture chlorine from the hydrogen chloride as described in any one of Claims 1-3. The catalyst particles (A) contain 0.5 to 4.5% by weight of copper element per 100% by weight of the catalyst particles (A),
The weight ratio ((A) / (B)) of catalyst particles (A) and reaction-inactive particles (B) contained in the fluidized bed reactor is in the range of 50/50 to 99/1. The method to manufacture chlorine from the hydrogen chloride as described in any one of Claims 1-3.   The method for producing chlorine from hydrogen chloride according to any one of claims 1 to 5, wherein the catalyst particles (A) contain a copper element, a rare earth element, and an alkali metal element. The catalyst particles (A) contain a copper element, a rare earth element and an alkali metal element,
The weight ratio of copper element to rare earth element is in the range of 1: 0.2 to 1: 6.0;
The method for producing chlorine from hydrogen chloride according to any one of claims 1 to 5, wherein the weight ratio of the copper element and the alkali metal element is in the range of 1: 0.1 to 1: 4.0. The catalyst particles (A) contain a copper element, a rare earth element and an alkali metal element,
The weight ratio of copper element to rare earth element is in the range of 1: 0.2 to 1: 3.0;
The method for producing chlorine from hydrogen chloride according to any one of claims 1 to 5, wherein the weight ratio of the copper element and the alkali metal element is in the range of 1: 0.1 to 1: 2.5.   The method for producing chlorine from hydrogen chloride according to any one of claims 1 to 8, wherein the reaction-inactive particles (B) are at least one kind of particles selected from silica and alumina.