Transformation of halogenated refrigerant gases

• US 6,110,429 A
• Filed: 11/12/1997
• Issued: 08/29/2000
• Est. Priority Date: 07/18/1995
• Status: Expired due to Fees

• Current Assignee: Johansing P. G Jr
• Original Assignee: Johansing P. G Jr
• Inventors: Johansing, P. G. Jr.
• Primary Examiner(s): TRAN, HIEN THI
• Application Number:
  US08/967,560
• Time in Patent Office: 1,021 Days
• Field of Search: 422/173, 422/182, 422/187, 422/198, 422/207, 423/490, 423/240.5, 423/431, 423/497, 432/72, 588/209, 588/213
• US Class Current: 422/173
• CPC Class Codes: C01F 11/18 Carbonates
• CPC Class Codes: C01F 11/20 Halides
• CPC Class Codes: C01F 11/22 Fluorides
• CPC Class Codes: C01F 11/24 Chlorides
• CPC Class Codes: F23C 2900/9901 Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
• CPC Class Codes: F23G 2208/10 Preventing or abating fire or explosion, e.g. by purging
• CPC Class Codes: F23G 2209/142 Halogen gases, e.g. silane
• CPC Class Codes: F23G 7/065 using gaseous or liquid fuel
• CPC Class Codes: F23J 2219/70 Condensing contaminants with coolers
• CPC Class Codes: F23J 7/00 Arrangement of devices for supplying chemicals to fire
• CPC Class Codes: F23L 2900/07004 Injecting liquid or solid materials releasing oxygen, e.g. perchlorate, nitrate, peroxide, and chlorate compounds, or appropriate mixtures thereof
• CPC Class Codes: Y02E 20/34 Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The high temperature combustion of hydrogen and oxygen is used to transform halogenated refrigerant gases (HRGs) and halons to produce calcium fluoride salts. Calcium carbonate is also produced by a series of chemical processes. Calcium chloride is partially consumed by the process by reaction with fluoride released during the high temperature combustion of the HRGs. Calcium chloride is also produced in the process during scrubbing of chlorine and during the recovery of ammonia used to remove carbon dioxide. The calcium chloride produced during the process can be used in the combustion reaction to further produce calcium fluoride.

Claims

1. A reactor for decomposing halogenated organic compounds comprising in combination:

a generally horizontal reaction chamber having opposite inlet and outlet ends and opposite upper and lower sidewalls, the reaction chamber being inclined to facilitate the flow of liquids along the lower sidewall of the reaction chamber to the outlet end;

a burner at the inlet end for introducing a combustible mixture along with halogenated organic compounds into the reaction chamber so that the halogenated organic compounds are decomposed within the reaction chamber; and

a coolant spray manifold mounted to the reaction chamber, the spray manifold extending approximately the length of the reaction chamber, the spray manifold having a plurality of spray orifices for introducing liquid coolant into the reaction chamber, the spray orifices being oriented so that the coolant is directed against the sidewalls for cooling the interior of the reaction chamber.

2. The reactor of claim 1, wherein:

the upper sidewall has formed therein an elongate opening which extends generally along the length of the upper sidewall, the exterior of the upper sidewall being provided with a manifold seat;

the spray manifold is movable between extended and retracted positions, the spray manifold projecting through the opening so that the plurality of orifices locate within the interior of the reaction chamber when in the extended position, the spray manifold having a shoulder which abuts against the manifold seat to effectively seal the opening when in the extended position to thereby prevent the escape of fluids from within the reaction chamber; and

further comprising

biasing means for biasing the spray manifold in the extended position, the biasing means allowing the spray manifold to move to the retracted position when pressure within the reaction chamber reaches a preselected amount so that the shoulder is moved away from the manifold seat to thus allow the reaction chamber to be vented through the opening.

3. The reactor of claim 1, wherein:

the burner is comprised of a central conduit surrounded by at least one other outer conduit which is radially spaced from the central conduit to define an annular passage, components of the combustible mixture being introduced into the reaction chamber through the central conduit and annular passage.